1154 files changed, 41760 insertions, 27342 deletions

diff --git a/.gitignore b/.gitignore
index a79bcf97c4..011463cbc9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,6 +29,7 @@ autom4te.cache
 # Do not use too creative wildcards.
 # Those might ignore files that should not be ignored.
 
+armv7l-unknown-linux-gnueabihf
 i686-pc-linux-gnu
 x86_64-unknown-linux-gnu
 i386-apple-darwin[0-9]*.[0-9]*.[0-9]*
@@ -261,7 +262,6 @@ JAVADOC-GENERATED
 
 # edoc
 
-/lib/edoc/priv/edoc_generate
 /lib/edoc/src/edoc_parser.erl
 
 # erts
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index ca9674d103..c89301d0eb 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,5 +1,38 @@
 # Contributing to Erlang/OTP
 
+## License
+
+By making a contribution to this project, I certify that:
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the 
+    best of my knowledge, is covered under an appropriate open 
+    source license and I have the right under that license to   
+    submit that work with modifications, whether created in whole
+    or in part by me, under the same open source license (unless
+    I am permitted to submit under a different license), as 
+    Indicated in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including 
+    all personal information I submit with it, including my
+    sign-off) is maintained indefinitely and may be redistributed
+    consistent with this project or the open source license(s)
+    involved.
+
+Erlang/otp is licensed under the
+Apache License 2.0
+
+As stated in: LICENSE.txt 
+
+http://developercertificate.org/
+
 ## Reporting a bug
 
 Report bugs at https://bugs.erlang.org. See [Bug reports](https://github.com/erlang/otp/wiki/Bug-reports)
diff --git a/HOWTO/DTRACE.md b/HOWTO/DTRACE.md
index 90f4addefd..0c08b6cc3d 100644
--- a/HOWTO/DTRACE.md
+++ b/HOWTO/DTRACE.md
@@ -46,346 +46,11 @@ although it's considered experimental. The main development of the dtrace code
 still happens outside of Ericsson, but there is no need to fetch a patched 
 version of the OTP source to get the basic funtionality.
 
-Implementation summary
-----------------------
+DTrace probe specifications
+---------------------------
 
-So far, most effort has been focused on the `efile_drv.c` code,
-which implements most file I/O on behalf of the Erlang virtual
-machine.  This driver also presents a big challenge: its use of an I/O
-worker pool (enabled by using the `erl +A 8` flag, for example) makes
-it much more difficult to trace I/O activity because each of the
-following may be executed in a different Pthread:
-
-* I/O initiation (Erlang code)
-* I/O proxy process handling, e.g. read/write when file is not opened
-  in `raw` mode, operations executed by the code & file server processes.
-  (Erlang code)
-* `efile_drv` command setup (C code)
-* `efile_drv` command execution (C code)
-* `efile_drv` status return (C code)
-
-Example output from `lib/runtime_tools/examples/efile_drv.d` while executing
-`file:rename("old-name", "new-name")`:
-
-    efile_drv enter tag={3,84} user tag some-user-tag | RENAME (12) | args: old-name new-name ,\
-          0 0 (port #Port<0.59>)
-    async I/O worker tag={3,83} | RENAME (12) | efile_drv-int_entry
-    async I/O worker tag={3,83} | RENAME (12) | efile_drv-int_return
-    efile_drv return tag={3,83} user tag  | RENAME (12) | errno 2
-
-... where the following key can help decipher the output:
-
-* `{3,83}` is the Erlang scheduler thread number (3) and operation
-  counter number (83) assigned to this I/O operation.  Together,
-  these two numbers form a unique ID for the I/O operation.
-* `12` is the command number for the rename operation.  See the
-  definition for `FILE_RENAME` in the source code file `efile_drv.c`
-  or the `BEGIN` section of the D script `lib/runtime_tools/examples/efile_drv.d`.
-* `old-name` and `new-name` are the two string arguments for the
-  source and destination of the `rename(2)` system call.
-  The two integer arguments are unused; the simple formatting code
-  prints the arguments anyway, 0 and 0.
-* The worker pool code was called on behalf of Erlang port `#Port<0.59>`.
-* The system call failed with a POSIX errno value of 2: `ENOENT`,
-  because the path `old-name` does not exist.
-* The `efile_drv-int_entry` and `efile_drv_int_return` probes are
-  provided in case the user is
-  interested in measuring only the latency of code executed by
-  `efile_drv` asynchronous functions by I/O worker pool threads
-  and the OS system call that they encapsulate.
-
-So, where does the `some-user-tag` string come from?
-
-At the moment, the user tag comes from code like the following:
-
-    dyntrace:put_tag("some-user-tag"),
-    file:rename("old-name", "new-name"),
-
-This method of tagging I/O at the Erlang level is subject to change.
-
-Example DTrace probe specification
-----------------------------------
-
-    /**
-     * Fired when a message is sent from one local process to another.
-     *
-     * NOTE: The 'size' parameter is in machine-dependent words and
-     *       that the actual size of any binary terms in the message
-     *       are not included.
-     *
-     * @param sender the PID (string form) of the sender
-     * @param receiver the PID (string form) of the receiver
-     * @param size the size of the message being delivered (words)
-     * @param token_label for the sender's sequential trace token
-     * @param token_previous count for the sender's sequential trace token
-     * @param token_current count for the sender's sequential trace token
-     */
-    probe message__send(char *sender, char *receiver, uint32_t size,
-                        int token_label, int token_previous, int token_current);
-
-    /**
-     * Fired when a message is sent from a local process to a remote process.
-     *
-     * NOTE: The 'size' parameter is in machine-dependent words and
-     *       that the actual size of any binary terms in the message
-     *       are not included.
-     *
-     * @param sender the PID (string form) of the sender
-     * @param node_name the Erlang node name (string form) of the receiver
-     * @param receiver the PID/name (string form) of the receiver
-     * @param size the size of the message being delivered (words)
-     * @param token_label for the sender's sequential trace token
-     * @param token_previous count for the sender's sequential trace token
-     * @param token_current count for the sender's sequential trace token
-     */
-    probe message__send__remote(char *sender, char *node_name, char *receiver,
-                                uint32_t size,
-                        int token_label, int token_previous, int token_current);
-
-    /**
-     * Fired when a message is queued to a local process.  This probe
-     * will not fire if the sender's pid == receiver's pid.
-     *
-     * NOTE: The 'size' parameter is in machine-dependent words and
-     *       that the actual size of any binary terms in the message
-     *       are not included.
-     *
-     * @param receiver the PID (string form) of the receiver
-     * @param size the size of the message being delivered (words)
-     * @param queue_len length of the queue of the receiving process
-     * @param token_label for the sender's sequential trace token
-     * @param token_previous count for the sender's sequential trace token
-     * @param token_current count for the sender's sequential trace token
-     */
-    probe message__queued(char *receiver, uint32_t size, uint32_t queue_len,
-                        int token_label, int token_previous, int token_current);
-
-    /**
-     * Fired when a message is 'receive'd by a local process and removed
-     * from its mailbox.
-     *
-     * NOTE: The 'size' parameter is in machine-dependent words and
-     *       that the actual size of any binary terms in the message
-     *       are not included.
-     *
-     * @param receiver the PID (string form) of the receiver
-     * @param size the size of the message being delivered (words)
-     * @param queue_len length of the queue of the receiving process
-     * @param token_label for the sender's sequential trace token
-     * @param token_previous count for the sender's sequential trace token
-     * @param token_current count for the sender's sequential trace token
-     */
-    probe message__receive(char *receiver, uint32_t size, uint32_t queue_len,
-                        int token_label, int token_previous, int token_current);
-
-    /* ... */
-
-    /* Async driver pool */
-
-    /**
-     * Show the post-add length of the async driver thread pool member's queue.
-     *
-     * NOTE: The port name is not available: additional lock(s) must
-     *       be acquired in order to get the port name safely in an SMP
-     *       environment.  The same is true for the aio__pool_get probe.
-     *
-     * @param port the Port (string form)
-     * @param new queue length
-     */
-    probe aio_pool__add(char *, int);
-
-    /**
-     * Show the post-get length of the async driver thread pool member's queue.
-     *
-     * @param port the Port (string form)
-     * @param new queue length
-     */
-    probe aio_pool__get(char *, int);
-
-    /* Probes for efile_drv.c */
-
-    /**
-     * Entry into the efile_drv.c file I/O driver
-     *
-     * For a list of command numbers used by this driver, see the section
-     * "Guide to probe arguments" in ../../../README.md.  That section
-     * also contains explanation of the various integer and string
-     * arguments that may be present when any particular probe fires.
-     *
-     * TODO: Adding the port string, args[10], is a pain.  Making that
-     *       port string available to all the other efile_drv.c probes
-     *       will be more pain.  Is the pain worth it?  If yes, then
-     *       add them everywhere else and grit our teeth.  If no, then
-     *       rip it out.
-     *
-     * @param thread-id number of the scheduler Pthread                   arg0
-     * @param tag number: {thread-id, tag} uniquely names a driver operation
-     * @param user-tag string                                             arg2
-     * @param command number                                              arg3
-     * @param string argument 1                                           arg4
-     * @param string argument 2                                           arg5
-     * @param integer argument 1                                          arg6
-     * @param integer argument 2                                          arg7
-     * @param integer argument 3                                          arg8
-     * @param integer argument 4                                          arg9
-     * @param port the port ID of the busy port                       args[10]
-     */
-    probe efile_drv__entry(int, int, char *, int, char *, char *,
-                           int64_t, int64_t, int64_t, int64_t, char *);
-
-    /**
-     * Entry into the driver's internal work function.  Computation here
-     * is performed by a async worker pool Pthread.
-     *
-     * @param thread-id number
-     * @param tag number
-     * @param command number
-     */
-    probe efile_drv__int_entry(int, int, int);
-
-    /**
-     * Return from the driver's internal work function.
-     *
-     * @param thread-id number
-     * @param tag number
-     * @param command number
-     */
-    probe efile_drv__int_return(int, int, int);
-
-    /**
-     * Return from the efile_drv.c file I/O driver
-     *
-     * @param thread-id number                                            arg0
-     * @param tag number                                                  arg1
-     * @param user-tag string                                             arg2
-     * @param command number                                              arg3
-     * @param Success? 1 is success, 0 is failure                         arg4
-     * @param If failure, the errno of the error.                         arg5
-     */
-    probe efile_drv__return(int, int, char *, int, int, int);
-
-Guide to efile_drv.c probe arguments
-------------------------------------
-
-    /* Driver op code: used by efile_drv-entry      arg3 */
-    /*                 used by efile_drv-int_entry  arg3 */
-    /*                 used by efile_drv-int_return arg3 */
-    /*                 used by efile_drv-return     arg3 */
-
-    #define FILE_OPEN            1                 (probe arg3)
-            probe arg6 = C driver dt_i1 = flags;
-            probe arg4 = C driver dt_s1 = path;
-
-    #define FILE_READ            2                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-            probe arg7 = C driver dt_i2 = flags;
-            probe arg8 = C driver dt_i3 = size;
-
-    #define FILE_LSEEK           3                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-            probe arg7 = C driver dt_i2 = offset;
-            probe arg8 = C driver dt_i3 = origin;
-
-    #define FILE_WRITE           4                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-            probe arg7 = C driver dt_i2 = flags;
-            probe arg8 = C driver dt_i3 = size;
-
-    #define FILE_FSTAT           5                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-
-    #define FILE_PWD             6                 (probe arg3)
-            none
-
-    #define FILE_READDIR         7                 (probe arg3)
-            probe arg4 = C driver dt_s1 = path;
-
-    #define FILE_CHDIR           8                 (probe arg3)
-            probe arg4 = C driver dt_s1 = path;
-
-    #define FILE_FSYNC           9                 (probe arg3)
-                probe arg6 = C driver dt_i1 = fd;
-
-    #define FILE_MKDIR          10                 (probe arg3)
-            probe arg4 = C driver dt_s1 = path;
-
-    #define FILE_DELETE         11                 (probe arg3)
-            probe arg4 = C driver dt_s1 = path;
-
-    #define FILE_RENAME         12                 (probe arg3)
-            probe arg4 = C driver dt_s1 = old_name;
-            probe arg5 = C driver dt_s2 = new_name;
-
-    #define FILE_RMDIR          13                 (probe arg3)
-            probe arg4 = C driver dt_s1 = path;
-
-    #define FILE_TRUNCATE       14                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-            probe arg7 = C driver dt_i2 = flags;
-
-    #define FILE_READ_FILE      15                 (probe arg3)
-            probe arg4 = C driver dt_s1 = path;
-
-    #define FILE_WRITE_INFO     16                 (probe arg3)
-            probe arg6 = C driver dt_i1 = mode;
-            probe arg7 = C driver dt_i2 = uid;
-            probe arg8 = C driver dt_i3 = gid;
-
-    #define FILE_LSTAT          19                 (probe arg3)
-            probe arg4 = C driver dt_s1 = path;
-
-    #define FILE_READLINK       20                 (probe arg3)
-            probe arg4 = C driver dt_s1 = path;
-
-    #define FILE_LINK           21                 (probe arg3)
-            probe arg4 = C driver dt_s1 = existing_path;
-            probe arg5 = C driver dt_s2 = new_path;
-
-    #define FILE_SYMLINK        22                 (probe arg3)
-            probe arg4 = C driver dt_s1 = existing_path;
-            probe arg5 = C driver dt_s2 = new_path;
-
-    #define FILE_CLOSE          23                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-            probe arg7 = C driver dt_i2 = flags;
-
-    #define FILE_PWRITEV        24                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-            probe arg7 = C driver dt_i2 = flags;
-            probe arg8 = C driver dt_i3 = size;
-
-    #define FILE_PREADV         25                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-            probe arg7 = C driver dt_i2 = flags;
-            probe arg8 = C driver dt_i3 = size;
-
-    #define FILE_SETOPT         26                 (probe arg3)
-            probe arg6 = C driver dt_i1 = opt_name;
-            probe arg7 = C driver dt_i2 = opt_specific_value;
-
-    #define FILE_IPREAD         27                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-            probe arg7 = C driver dt_i2 = flags;
-            probe arg8 = C driver dt_i3 = offsets[0];
-            probe arg9 = C driver dt_i4 = size;
-
-    #define FILE_ALTNAME        28                 (probe arg3)
-            probe arg4 = C driver dt_s1 = path;
-
-    #define FILE_READ_LINE      29                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-            probe arg7 = C driver dt_i2 = flags;
-            probe arg8 = C driver dt_i3 = read_offset;
-            probe arg9 = C driver dt_i4 = read_ahead;
-
-    #define FILE_FDATASYNC      30                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-
-    #define FILE_FADVISE        31                 (probe arg3)
-            probe arg6 = C driver dt_i1 = fd;
-            probe arg7 = C driver dt_i2 = offset;
-            probe arg8 = C driver dt_i3 = length;
-            probe arg9 = C driver dt_i4 = advise_type;
+Probe specifications can be found in `erts/emulator/beam/erlang_dtrace.d`, and
+a few example scripts can be found under `lib/runtime_tools/examples/`.
 
    [1]: http://www.erlang.org/euc/08/
    [$ERL_TOP/HOWTO/SYSTEMTAP.md]: SYSTEMTAP.md
diff --git a/HOWTO/INSTALL.md b/HOWTO/INSTALL.md
index f62429a3ff..f7de69166a 100644
--- a/HOWTO/INSTALL.md
+++ b/HOWTO/INSTALL.md
@@ -506,12 +506,26 @@ If you have Xcode 4.3, or later, you will also need to download
 #### Building with wxErlang ####
 
 If you want to build the `wx` application, you will need to get wxWidgets-3.0
-(`wxWidgets-3.0.0.tar.bz2` from <http://sourceforge.net/projects/wxwindows/files/3.0.0/>) or get it from github with bug fixes:
+(`wxWidgets-3.0.3.tar.bz2` from <https://github.com/wxWidgets/wxWidgets/releases/download/v3.0.3/wxWidgets-3.0.3.tar.bz2>) or get it from github with bug fixes:
 
     $ git clone --branch WX_3_0_BRANCH [email protected]:wxWidgets/wxWidgets.git
 
-Be aware that the wxWidgets-3.0 is a new release of wxWidgets, it is not as
-mature as the old releases and the OS X port still lags behind the other ports.
+The wxWidgets-3.1 version should also work if 2.8 compatibility is enabled,
+add `--enable-compat28` to configure commands below.
+
+Configure and build wxWidgets (shared library on linux):
+
+    $ ./configure --prefix=/usr/local
+    $ make && sudo make install
+    $ export PATH=/usr/local/bin:$PATH
+
+Configure and build wxWidgets (static library on linux):
+
+    $ export CFLAGS=-fPIC
+    $ export CXXFLAGS=-fPIC
+    $ ./configure --prefix=/usr/local --disable-shared
+    $ make && sudo make install
+    $ export PATH=/usr/local/bin:$PATH
 
 Configure and build wxWidgets (on Mavericks - 10.9):
 
diff --git a/Makefile.in b/Makefile.in
index b3ab11d29a..3289f1d86b 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -428,6 +428,18 @@ ifneq  ($(OTP_SMALL_BUILD),true)
 	echo "OTP doc built" > $(ERL_TOP)/make/otp_doc_built
 endif
 
+xmllint: docs
+	PATH=$(BOOT_PREFIX)"$${PATH}" ERL_TOP=$(ERL_TOP) \
+	$(MAKE) -C erts/ $@
+ifeq ($(OTP_SMALL_BUILD),true)
+	PATH=$(BOOT_PREFIX)"$${PATH}" ERL_TOP=$(ERL_TOP) \
+	$(MAKE) -C lib/ $@
+else
+	PATH=$(BOOT_PREFIX)"$${PATH}" ERL_TOP=$(ERL_TOP) \
+	$(MAKE) BUILD_ALL=1 -C lib/ $@
+	PATH=$(BOOT_PREFIX)"$${PATH}" ERL_TOP=$(ERL_TOP) \
+	$(MAKE) -C system/doc $@
+endif
 
 mod2app: 
 	PATH=$(BOOT_PREFIX)"$${PATH}" escript $(BOOTSTRAP_ROOT)/bootstrap/lib/erl_docgen/priv/bin/xref_mod_app.escript -topdir $(ERL_TOP) -outfile $(ERL_TOP)/make/$(TARGET)/mod2app.xml
diff --git a/bootstrap/bin/no_dot_erlang.boot b/bootstrap/bin/no_dot_erlang.boot
new file mode 100644
index 0000000000..2b909efb58
--- /dev/null
+++ b/bootstrap/bin/no_dot_erlang.boot
diff --git a/bootstrap/bin/start.boot b/bootstrap/bin/start.boot
index fc355b9c10..2b909efb58 100644
--- a/bootstrap/bin/start.boot
+++ b/bootstrap/bin/start.boot
diff --git a/bootstrap/bin/start_clean.boot b/bootstrap/bin/start_clean.boot
index fc355b9c10..2b909efb58 100644
--- a/bootstrap/bin/start_clean.boot
+++ b/bootstrap/bin/start_clean.boot
diff --git a/bootstrap/lib/compiler/ebin/beam_a.beam b/bootstrap/lib/compiler/ebin/beam_a.beam
index 1c8753b2d1..47376e1964 100644
--- a/bootstrap/lib/compiler/ebin/beam_a.beam
+++ b/bootstrap/lib/compiler/ebin/beam_a.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_asm.beam b/bootstrap/lib/compiler/ebin/beam_asm.beam
index e6300162e6..7ce46af61c 100644
--- a/bootstrap/lib/compiler/ebin/beam_asm.beam
+++ b/bootstrap/lib/compiler/ebin/beam_asm.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_block.beam b/bootstrap/lib/compiler/ebin/beam_block.beam
index f2d8c1c51d..98d5ec2e59 100644
--- a/bootstrap/lib/compiler/ebin/beam_block.beam
+++ b/bootstrap/lib/compiler/ebin/beam_block.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_bs.beam b/bootstrap/lib/compiler/ebin/beam_bs.beam
index 9c398ae80c..edbc6fd015 100644
--- a/bootstrap/lib/compiler/ebin/beam_bs.beam
+++ b/bootstrap/lib/compiler/ebin/beam_bs.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_bsm.beam b/bootstrap/lib/compiler/ebin/beam_bsm.beam
index 24992e9b90..087e0dcf84 100644
--- a/bootstrap/lib/compiler/ebin/beam_bsm.beam
+++ b/bootstrap/lib/compiler/ebin/beam_bsm.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_clean.beam b/bootstrap/lib/compiler/ebin/beam_clean.beam
index 0985c13769..c856c87a45 100644
--- a/bootstrap/lib/compiler/ebin/beam_clean.beam
+++ b/bootstrap/lib/compiler/ebin/beam_clean.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_dead.beam b/bootstrap/lib/compiler/ebin/beam_dead.beam
index 46e7e4c530..bb72855294 100644
--- a/bootstrap/lib/compiler/ebin/beam_dead.beam
+++ b/bootstrap/lib/compiler/ebin/beam_dead.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_dict.beam b/bootstrap/lib/compiler/ebin/beam_dict.beam
index a9ea05ab77..913c0ec1fe 100644
--- a/bootstrap/lib/compiler/ebin/beam_dict.beam
+++ b/bootstrap/lib/compiler/ebin/beam_dict.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_disasm.beam b/bootstrap/lib/compiler/ebin/beam_disasm.beam
index 132b756895..1e6d90af35 100644
--- a/bootstrap/lib/compiler/ebin/beam_disasm.beam
+++ b/bootstrap/lib/compiler/ebin/beam_disasm.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_except.beam b/bootstrap/lib/compiler/ebin/beam_except.beam
index 8c94b74d8c..b5f059596f 100644
--- a/bootstrap/lib/compiler/ebin/beam_except.beam
+++ b/bootstrap/lib/compiler/ebin/beam_except.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_flatten.beam b/bootstrap/lib/compiler/ebin/beam_flatten.beam
index 50e2ce7ab4..ebd383c76c 100644
--- a/bootstrap/lib/compiler/ebin/beam_flatten.beam
+++ b/bootstrap/lib/compiler/ebin/beam_flatten.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_jump.beam b/bootstrap/lib/compiler/ebin/beam_jump.beam
index 6840f1e750..278f03351c 100644
--- a/bootstrap/lib/compiler/ebin/beam_jump.beam
+++ b/bootstrap/lib/compiler/ebin/beam_jump.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_listing.beam b/bootstrap/lib/compiler/ebin/beam_listing.beam
index 74695349ba..87a8791bc4 100644
--- a/bootstrap/lib/compiler/ebin/beam_listing.beam
+++ b/bootstrap/lib/compiler/ebin/beam_listing.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_opcodes.beam b/bootstrap/lib/compiler/ebin/beam_opcodes.beam
index b8b04bbe8b..04305d7896 100644
--- a/bootstrap/lib/compiler/ebin/beam_opcodes.beam
+++ b/bootstrap/lib/compiler/ebin/beam_opcodes.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_peep.beam b/bootstrap/lib/compiler/ebin/beam_peep.beam
index 2bb2df33a3..5e1235dca5 100644
--- a/bootstrap/lib/compiler/ebin/beam_peep.beam
+++ b/bootstrap/lib/compiler/ebin/beam_peep.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_receive.beam b/bootstrap/lib/compiler/ebin/beam_receive.beam
index 1152825b01..e19d878513 100644
--- a/bootstrap/lib/compiler/ebin/beam_receive.beam
+++ b/bootstrap/lib/compiler/ebin/beam_receive.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_record.beam b/bootstrap/lib/compiler/ebin/beam_record.beam
index 6ca907ac26..542bd13d20 100644
--- a/bootstrap/lib/compiler/ebin/beam_record.beam
+++ b/bootstrap/lib/compiler/ebin/beam_record.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_reorder.beam b/bootstrap/lib/compiler/ebin/beam_reorder.beam
index 1d5f5e3dcd..9f1668c97f 100644
--- a/bootstrap/lib/compiler/ebin/beam_reorder.beam
+++ b/bootstrap/lib/compiler/ebin/beam_reorder.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_split.beam b/bootstrap/lib/compiler/ebin/beam_split.beam
index 12c532b465..d53a8a8b97 100644
--- a/bootstrap/lib/compiler/ebin/beam_split.beam
+++ b/bootstrap/lib/compiler/ebin/beam_split.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_trim.beam b/bootstrap/lib/compiler/ebin/beam_trim.beam
index 5338e9079f..9025e3ca1a 100644
--- a/bootstrap/lib/compiler/ebin/beam_trim.beam
+++ b/bootstrap/lib/compiler/ebin/beam_trim.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_type.beam b/bootstrap/lib/compiler/ebin/beam_type.beam
index d0e6da02a8..ecebbdef66 100644
--- a/bootstrap/lib/compiler/ebin/beam_type.beam
+++ b/bootstrap/lib/compiler/ebin/beam_type.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_utils.beam b/bootstrap/lib/compiler/ebin/beam_utils.beam
index 4d475cd899..adb835d20a 100644
--- a/bootstrap/lib/compiler/ebin/beam_utils.beam
+++ b/bootstrap/lib/compiler/ebin/beam_utils.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_validator.beam b/bootstrap/lib/compiler/ebin/beam_validator.beam
index 9c2e1a2c4c..6597bc7ad6 100644
--- a/bootstrap/lib/compiler/ebin/beam_validator.beam
+++ b/bootstrap/lib/compiler/ebin/beam_validator.beam
diff --git a/bootstrap/lib/compiler/ebin/beam_z.beam b/bootstrap/lib/compiler/ebin/beam_z.beam
index fafd2065e5..a95d070cff 100644
--- a/bootstrap/lib/compiler/ebin/beam_z.beam
+++ b/bootstrap/lib/compiler/ebin/beam_z.beam
diff --git a/bootstrap/lib/compiler/ebin/cerl.beam b/bootstrap/lib/compiler/ebin/cerl.beam
index 0ce3fbe876..7315ab8100 100644
--- a/bootstrap/lib/compiler/ebin/cerl.beam
+++ b/bootstrap/lib/compiler/ebin/cerl.beam
diff --git a/bootstrap/lib/compiler/ebin/cerl_clauses.beam b/bootstrap/lib/compiler/ebin/cerl_clauses.beam
index 3e7a816876..fe1a83018e 100644
--- a/bootstrap/lib/compiler/ebin/cerl_clauses.beam
+++ b/bootstrap/lib/compiler/ebin/cerl_clauses.beam
diff --git a/bootstrap/lib/compiler/ebin/cerl_inline.beam b/bootstrap/lib/compiler/ebin/cerl_inline.beam
index 0fa0d82191..4036eaf5a6 100644
--- a/bootstrap/lib/compiler/ebin/cerl_inline.beam
+++ b/bootstrap/lib/compiler/ebin/cerl_inline.beam
diff --git a/bootstrap/lib/compiler/ebin/cerl_trees.beam b/bootstrap/lib/compiler/ebin/cerl_trees.beam
index 6d64dd7da0..fc525300df 100644
--- a/bootstrap/lib/compiler/ebin/cerl_trees.beam
+++ b/bootstrap/lib/compiler/ebin/cerl_trees.beam
diff --git a/bootstrap/lib/compiler/ebin/compile.beam b/bootstrap/lib/compiler/ebin/compile.beam
index d2f4ed83bb..1cfe725032 100644
--- a/bootstrap/lib/compiler/ebin/compile.beam
+++ b/bootstrap/lib/compiler/ebin/compile.beam
diff --git a/bootstrap/lib/compiler/ebin/compiler.app b/bootstrap/lib/compiler/ebin/compiler.app
index ad107fcd40..01e2c478d4 100644
--- a/bootstrap/lib/compiler/ebin/compiler.app
+++ b/bootstrap/lib/compiler/ebin/compiler.app
@@ -19,7 +19,7 @@
 
 {application, compiler,
  [{description, "ERTS  CXC 138 10"},
-  {vsn, "7.1.2"},
+  {vsn, "7.1.3"},
   {modules, [
 	     beam_a,
 	     beam_asm,
@@ -68,8 +68,7 @@
 	     v3_codegen,
 	     v3_core,
 	     v3_kernel,
-	     v3_kernel_pp,
-	     v3_life
+	     v3_kernel_pp
 	    ]},
   {registered, []},
   {applications, [kernel, stdlib]},
diff --git a/bootstrap/lib/compiler/ebin/compiler.appup b/bootstrap/lib/compiler/ebin/compiler.appup
index 277b35faa8..2973178217 100644
--- a/bootstrap/lib/compiler/ebin/compiler.appup
+++ b/bootstrap/lib/compiler/ebin/compiler.appup
@@ -16,7 +16,7 @@
 %% limitations under the License.
 %%
 %% %CopyrightEnd%
-{"7.1.1",
+{"7.1.3",
  [{<<".*">>,[{restart_application, compiler}]}],
  [{<<".*">>,[{restart_application, compiler}]}]
 }.
diff --git a/bootstrap/lib/compiler/ebin/core_lib.beam b/bootstrap/lib/compiler/ebin/core_lib.beam
index b8b5f2d2b0..f3737ecc26 100644
--- a/bootstrap/lib/compiler/ebin/core_lib.beam
+++ b/bootstrap/lib/compiler/ebin/core_lib.beam
diff --git a/bootstrap/lib/compiler/ebin/core_lint.beam b/bootstrap/lib/compiler/ebin/core_lint.beam
index 9c5dee5418..023a804f36 100644
--- a/bootstrap/lib/compiler/ebin/core_lint.beam
+++ b/bootstrap/lib/compiler/ebin/core_lint.beam
diff --git a/bootstrap/lib/compiler/ebin/core_parse.beam b/bootstrap/lib/compiler/ebin/core_parse.beam
index f00039809a..b04a7b4496 100644
--- a/bootstrap/lib/compiler/ebin/core_parse.beam
+++ b/bootstrap/lib/compiler/ebin/core_parse.beam
diff --git a/bootstrap/lib/compiler/ebin/core_pp.beam b/bootstrap/lib/compiler/ebin/core_pp.beam
index f0573bd200..45cacc510c 100644
--- a/bootstrap/lib/compiler/ebin/core_pp.beam
+++ b/bootstrap/lib/compiler/ebin/core_pp.beam
diff --git a/bootstrap/lib/compiler/ebin/core_scan.beam b/bootstrap/lib/compiler/ebin/core_scan.beam
index 398c538178..cd266e0f99 100644
--- a/bootstrap/lib/compiler/ebin/core_scan.beam
+++ b/bootstrap/lib/compiler/ebin/core_scan.beam
diff --git a/bootstrap/lib/compiler/ebin/rec_env.beam b/bootstrap/lib/compiler/ebin/rec_env.beam
index 17cc7fec75..60e1f0401c 100644
--- a/bootstrap/lib/compiler/ebin/rec_env.beam
+++ b/bootstrap/lib/compiler/ebin/rec_env.beam
diff --git a/bootstrap/lib/compiler/ebin/sys_core_alias.beam b/bootstrap/lib/compiler/ebin/sys_core_alias.beam
index d1fe157419..5794eeda81 100644
--- a/bootstrap/lib/compiler/ebin/sys_core_alias.beam
+++ b/bootstrap/lib/compiler/ebin/sys_core_alias.beam
diff --git a/bootstrap/lib/compiler/ebin/sys_core_bsm.beam b/bootstrap/lib/compiler/ebin/sys_core_bsm.beam
index d5e06493c5..2d2373a0ff 100644
--- a/bootstrap/lib/compiler/ebin/sys_core_bsm.beam
+++ b/bootstrap/lib/compiler/ebin/sys_core_bsm.beam
diff --git a/bootstrap/lib/compiler/ebin/sys_core_dsetel.beam b/bootstrap/lib/compiler/ebin/sys_core_dsetel.beam
index afe4cd4517..4a0c518337 100644
--- a/bootstrap/lib/compiler/ebin/sys_core_dsetel.beam
+++ b/bootstrap/lib/compiler/ebin/sys_core_dsetel.beam
diff --git a/bootstrap/lib/compiler/ebin/sys_core_fold.beam b/bootstrap/lib/compiler/ebin/sys_core_fold.beam
index f1ed480d29..e4a69a7dc8 100644
--- a/bootstrap/lib/compiler/ebin/sys_core_fold.beam
+++ b/bootstrap/lib/compiler/ebin/sys_core_fold.beam
diff --git a/bootstrap/lib/compiler/ebin/sys_core_fold_lists.beam b/bootstrap/lib/compiler/ebin/sys_core_fold_lists.beam
index 092ac1242d..50bd3e5096 100644
--- a/bootstrap/lib/compiler/ebin/sys_core_fold_lists.beam
+++ b/bootstrap/lib/compiler/ebin/sys_core_fold_lists.beam
diff --git a/bootstrap/lib/compiler/ebin/sys_core_inline.beam b/bootstrap/lib/compiler/ebin/sys_core_inline.beam
index f9abd6c887..a52196c764 100644
--- a/bootstrap/lib/compiler/ebin/sys_core_inline.beam
+++ b/bootstrap/lib/compiler/ebin/sys_core_inline.beam
diff --git a/bootstrap/lib/compiler/ebin/sys_pre_attributes.beam b/bootstrap/lib/compiler/ebin/sys_pre_attributes.beam
index b854db12c4..0752765115 100644
--- a/bootstrap/lib/compiler/ebin/sys_pre_attributes.beam
+++ b/bootstrap/lib/compiler/ebin/sys_pre_attributes.beam
diff --git a/bootstrap/lib/compiler/ebin/v3_codegen.beam b/bootstrap/lib/compiler/ebin/v3_codegen.beam
index e7cbc758f1..17cedb8eb1 100644
--- a/bootstrap/lib/compiler/ebin/v3_codegen.beam
+++ b/bootstrap/lib/compiler/ebin/v3_codegen.beam
diff --git a/bootstrap/lib/compiler/ebin/v3_core.beam b/bootstrap/lib/compiler/ebin/v3_core.beam
index 59717eae84..0bd3b5b8f1 100644
--- a/bootstrap/lib/compiler/ebin/v3_core.beam
+++ b/bootstrap/lib/compiler/ebin/v3_core.beam
diff --git a/bootstrap/lib/compiler/ebin/v3_kernel.beam b/bootstrap/lib/compiler/ebin/v3_kernel.beam
index 4a13fcfc99..654dd30b41 100644
--- a/bootstrap/lib/compiler/ebin/v3_kernel.beam
+++ b/bootstrap/lib/compiler/ebin/v3_kernel.beam
diff --git a/bootstrap/lib/compiler/ebin/v3_kernel_pp.beam b/bootstrap/lib/compiler/ebin/v3_kernel_pp.beam
index e1b8c58c8f..f90f26392c 100644
--- a/bootstrap/lib/compiler/ebin/v3_kernel_pp.beam
+++ b/bootstrap/lib/compiler/ebin/v3_kernel_pp.beam
diff --git a/bootstrap/lib/compiler/ebin/v3_life.beam b/bootstrap/lib/compiler/ebin/v3_life.beam
deleted file mode 100644
index c20070cf34..0000000000
--- a/bootstrap/lib/compiler/ebin/v3_life.beam
+++ /dev/null
diff --git a/bootstrap/lib/kernel/ebin/application.beam b/bootstrap/lib/kernel/ebin/application.beam
index 05ecd20859..58f1681fba 100644
--- a/bootstrap/lib/kernel/ebin/application.beam
+++ b/bootstrap/lib/kernel/ebin/application.beam
diff --git a/bootstrap/lib/kernel/ebin/application_controller.beam b/bootstrap/lib/kernel/ebin/application_controller.beam
index 2f480b5e37..46be5c8f54 100644
--- a/bootstrap/lib/kernel/ebin/application_controller.beam
+++ b/bootstrap/lib/kernel/ebin/application_controller.beam
diff --git a/bootstrap/lib/kernel/ebin/application_master.beam b/bootstrap/lib/kernel/ebin/application_master.beam
index 59606bc90d..892d58a8b1 100644
--- a/bootstrap/lib/kernel/ebin/application_master.beam
+++ b/bootstrap/lib/kernel/ebin/application_master.beam
diff --git a/bootstrap/lib/kernel/ebin/application_starter.beam b/bootstrap/lib/kernel/ebin/application_starter.beam
index 32a6ad752d..354b96eae5 100644
--- a/bootstrap/lib/kernel/ebin/application_starter.beam
+++ b/bootstrap/lib/kernel/ebin/application_starter.beam
diff --git a/bootstrap/lib/kernel/ebin/auth.beam b/bootstrap/lib/kernel/ebin/auth.beam
index f1126ac7c8..cb1b5fe5b2 100644
--- a/bootstrap/lib/kernel/ebin/auth.beam
+++ b/bootstrap/lib/kernel/ebin/auth.beam
diff --git a/bootstrap/lib/kernel/ebin/code.beam b/bootstrap/lib/kernel/ebin/code.beam
index 418816a351..c823be3cc9 100644
--- a/bootstrap/lib/kernel/ebin/code.beam
+++ b/bootstrap/lib/kernel/ebin/code.beam
diff --git a/bootstrap/lib/kernel/ebin/code_server.beam b/bootstrap/lib/kernel/ebin/code_server.beam
index 536da5c692..08a234da78 100644
--- a/bootstrap/lib/kernel/ebin/code_server.beam
+++ b/bootstrap/lib/kernel/ebin/code_server.beam
diff --git a/bootstrap/lib/kernel/ebin/disk_log.beam b/bootstrap/lib/kernel/ebin/disk_log.beam
index e8a6acd235..966a3c342f 100644
--- a/bootstrap/lib/kernel/ebin/disk_log.beam
+++ b/bootstrap/lib/kernel/ebin/disk_log.beam
diff --git a/bootstrap/lib/kernel/ebin/disk_log_1.beam b/bootstrap/lib/kernel/ebin/disk_log_1.beam
index 7c9cbd200b..984df219a4 100644
--- a/bootstrap/lib/kernel/ebin/disk_log_1.beam
+++ b/bootstrap/lib/kernel/ebin/disk_log_1.beam
diff --git a/bootstrap/lib/kernel/ebin/disk_log_server.beam b/bootstrap/lib/kernel/ebin/disk_log_server.beam
index 96bad0104e..cc9057b149 100644
--- a/bootstrap/lib/kernel/ebin/disk_log_server.beam
+++ b/bootstrap/lib/kernel/ebin/disk_log_server.beam
diff --git a/bootstrap/lib/kernel/ebin/dist_ac.beam b/bootstrap/lib/kernel/ebin/dist_ac.beam
index bcc27081b2..6fa25d71e9 100644
--- a/bootstrap/lib/kernel/ebin/dist_ac.beam
+++ b/bootstrap/lib/kernel/ebin/dist_ac.beam
diff --git a/bootstrap/lib/kernel/ebin/dist_util.beam b/bootstrap/lib/kernel/ebin/dist_util.beam
index fd4e4fb5de..518b43c3df 100644
--- a/bootstrap/lib/kernel/ebin/dist_util.beam
+++ b/bootstrap/lib/kernel/ebin/dist_util.beam
diff --git a/bootstrap/lib/kernel/ebin/erl_boot_server.beam b/bootstrap/lib/kernel/ebin/erl_boot_server.beam
index d9de814e60..f63e1a94f2 100644
--- a/bootstrap/lib/kernel/ebin/erl_boot_server.beam
+++ b/bootstrap/lib/kernel/ebin/erl_boot_server.beam
diff --git a/bootstrap/lib/kernel/ebin/erl_ddll.beam b/bootstrap/lib/kernel/ebin/erl_ddll.beam
index 940a74c1c3..b672c39f5d 100644
--- a/bootstrap/lib/kernel/ebin/erl_ddll.beam
+++ b/bootstrap/lib/kernel/ebin/erl_ddll.beam
diff --git a/bootstrap/lib/kernel/ebin/erl_distribution.beam b/bootstrap/lib/kernel/ebin/erl_distribution.beam
index fcf8d7fef0..79fbb0bd49 100644
--- a/bootstrap/lib/kernel/ebin/erl_distribution.beam
+++ b/bootstrap/lib/kernel/ebin/erl_distribution.beam
diff --git a/bootstrap/lib/kernel/ebin/erl_epmd.beam b/bootstrap/lib/kernel/ebin/erl_epmd.beam
index 717d7937da..97c2d27abc 100644
--- a/bootstrap/lib/kernel/ebin/erl_epmd.beam
+++ b/bootstrap/lib/kernel/ebin/erl_epmd.beam
diff --git a/bootstrap/lib/kernel/ebin/erl_reply.beam b/bootstrap/lib/kernel/ebin/erl_reply.beam
index d9dee00b6a..25b4b6c55e 100644
--- a/bootstrap/lib/kernel/ebin/erl_reply.beam
+++ b/bootstrap/lib/kernel/ebin/erl_reply.beam
diff --git a/bootstrap/lib/kernel/ebin/erl_signal_handler.beam b/bootstrap/lib/kernel/ebin/erl_signal_handler.beam
index b2498def7f..bbb5e7fcb4 100644
--- a/bootstrap/lib/kernel/ebin/erl_signal_handler.beam
+++ b/bootstrap/lib/kernel/ebin/erl_signal_handler.beam
diff --git a/bootstrap/lib/kernel/ebin/error_logger.beam b/bootstrap/lib/kernel/ebin/error_logger.beam
index 2415215395..8293d3c354 100644
--- a/bootstrap/lib/kernel/ebin/error_logger.beam
+++ b/bootstrap/lib/kernel/ebin/error_logger.beam
diff --git a/bootstrap/lib/kernel/ebin/erts_debug.beam b/bootstrap/lib/kernel/ebin/erts_debug.beam
index 75064d3452..ccc39d20a5 100644
--- a/bootstrap/lib/kernel/ebin/erts_debug.beam
+++ b/bootstrap/lib/kernel/ebin/erts_debug.beam
diff --git a/bootstrap/lib/kernel/ebin/file.beam b/bootstrap/lib/kernel/ebin/file.beam
index 6d45887800..65be0c61ae 100644
--- a/bootstrap/lib/kernel/ebin/file.beam
+++ b/bootstrap/lib/kernel/ebin/file.beam
diff --git a/bootstrap/lib/kernel/ebin/file_io_server.beam b/bootstrap/lib/kernel/ebin/file_io_server.beam
index d0279971b0..6dc1cd3e64 100644
--- a/bootstrap/lib/kernel/ebin/file_io_server.beam
+++ b/bootstrap/lib/kernel/ebin/file_io_server.beam
diff --git a/bootstrap/lib/kernel/ebin/file_server.beam b/bootstrap/lib/kernel/ebin/file_server.beam
index d609725fa8..f17b888898 100644
--- a/bootstrap/lib/kernel/ebin/file_server.beam
+++ b/bootstrap/lib/kernel/ebin/file_server.beam
diff --git a/bootstrap/lib/kernel/ebin/gen_sctp.beam b/bootstrap/lib/kernel/ebin/gen_sctp.beam
index e56d7fd978..dcd81b1c6f 100644
--- a/bootstrap/lib/kernel/ebin/gen_sctp.beam
+++ b/bootstrap/lib/kernel/ebin/gen_sctp.beam
diff --git a/bootstrap/lib/kernel/ebin/gen_tcp.beam b/bootstrap/lib/kernel/ebin/gen_tcp.beam
index 9d9828c266..0e492978d5 100644
--- a/bootstrap/lib/kernel/ebin/gen_tcp.beam
+++ b/bootstrap/lib/kernel/ebin/gen_tcp.beam
diff --git a/bootstrap/lib/kernel/ebin/gen_udp.beam b/bootstrap/lib/kernel/ebin/gen_udp.beam
index b181c70e6a..323b6cd4bb 100644
--- a/bootstrap/lib/kernel/ebin/gen_udp.beam
+++ b/bootstrap/lib/kernel/ebin/gen_udp.beam
diff --git a/bootstrap/lib/kernel/ebin/global.beam b/bootstrap/lib/kernel/ebin/global.beam
index ff9a409bf8..7b5218d5c0 100644
--- a/bootstrap/lib/kernel/ebin/global.beam
+++ b/bootstrap/lib/kernel/ebin/global.beam
diff --git a/bootstrap/lib/kernel/ebin/global_group.beam b/bootstrap/lib/kernel/ebin/global_group.beam
index ef0913f98d..f6e1cde0aa 100644
--- a/bootstrap/lib/kernel/ebin/global_group.beam
+++ b/bootstrap/lib/kernel/ebin/global_group.beam
diff --git a/bootstrap/lib/kernel/ebin/global_search.beam b/bootstrap/lib/kernel/ebin/global_search.beam
index 255886f9fe..653d2a8699 100644
--- a/bootstrap/lib/kernel/ebin/global_search.beam
+++ b/bootstrap/lib/kernel/ebin/global_search.beam
diff --git a/bootstrap/lib/kernel/ebin/group.beam b/bootstrap/lib/kernel/ebin/group.beam
index 5c5f3bfa73..dd44980372 100644
--- a/bootstrap/lib/kernel/ebin/group.beam
+++ b/bootstrap/lib/kernel/ebin/group.beam
diff --git a/bootstrap/lib/kernel/ebin/group_history.beam b/bootstrap/lib/kernel/ebin/group_history.beam
index 9328355025..9d2b59b416 100644
--- a/bootstrap/lib/kernel/ebin/group_history.beam
+++ b/bootstrap/lib/kernel/ebin/group_history.beam
diff --git a/bootstrap/lib/kernel/ebin/heart.beam b/bootstrap/lib/kernel/ebin/heart.beam
index be58924715..e015f73351 100644
--- a/bootstrap/lib/kernel/ebin/heart.beam
+++ b/bootstrap/lib/kernel/ebin/heart.beam
diff --git a/bootstrap/lib/kernel/ebin/hipe_unified_loader.beam b/bootstrap/lib/kernel/ebin/hipe_unified_loader.beam
index 286f4aa309..5382210217 100644
--- a/bootstrap/lib/kernel/ebin/hipe_unified_loader.beam
+++ b/bootstrap/lib/kernel/ebin/hipe_unified_loader.beam
diff --git a/bootstrap/lib/kernel/ebin/inet.beam b/bootstrap/lib/kernel/ebin/inet.beam
index 667c67acb8..2d92d7c17f 100644
--- a/bootstrap/lib/kernel/ebin/inet.beam
+++ b/bootstrap/lib/kernel/ebin/inet.beam
diff --git a/bootstrap/lib/kernel/ebin/inet6_tcp.beam b/bootstrap/lib/kernel/ebin/inet6_tcp.beam
index 7a2649e560..300d4f3ad6 100644
--- a/bootstrap/lib/kernel/ebin/inet6_tcp.beam
+++ b/bootstrap/lib/kernel/ebin/inet6_tcp.beam
diff --git a/bootstrap/lib/kernel/ebin/inet_config.beam b/bootstrap/lib/kernel/ebin/inet_config.beam
index 6e02c48609..1da234c245 100644
--- a/bootstrap/lib/kernel/ebin/inet_config.beam
+++ b/bootstrap/lib/kernel/ebin/inet_config.beam
diff --git a/bootstrap/lib/kernel/ebin/inet_db.beam b/bootstrap/lib/kernel/ebin/inet_db.beam
index e2b5639720..b6c52bff8c 100644
--- a/bootstrap/lib/kernel/ebin/inet_db.beam
+++ b/bootstrap/lib/kernel/ebin/inet_db.beam
diff --git a/bootstrap/lib/kernel/ebin/inet_dns.beam b/bootstrap/lib/kernel/ebin/inet_dns.beam
index ba611799a2..f90d24dbdf 100644
--- a/bootstrap/lib/kernel/ebin/inet_dns.beam
+++ b/bootstrap/lib/kernel/ebin/inet_dns.beam
diff --git a/bootstrap/lib/kernel/ebin/inet_gethost_native.beam b/bootstrap/lib/kernel/ebin/inet_gethost_native.beam
index e350aeea89..d20c0ccc8d 100644
--- a/bootstrap/lib/kernel/ebin/inet_gethost_native.beam
+++ b/bootstrap/lib/kernel/ebin/inet_gethost_native.beam
diff --git a/bootstrap/lib/kernel/ebin/inet_hosts.beam b/bootstrap/lib/kernel/ebin/inet_hosts.beam
index 6a66d00d1e..209d86690d 100644
--- a/bootstrap/lib/kernel/ebin/inet_hosts.beam
+++ b/bootstrap/lib/kernel/ebin/inet_hosts.beam
diff --git a/bootstrap/lib/kernel/ebin/inet_parse.beam b/bootstrap/lib/kernel/ebin/inet_parse.beam
index cd27ee7265..218a51d862 100644
--- a/bootstrap/lib/kernel/ebin/inet_parse.beam
+++ b/bootstrap/lib/kernel/ebin/inet_parse.beam
diff --git a/bootstrap/lib/kernel/ebin/inet_res.beam b/bootstrap/lib/kernel/ebin/inet_res.beam
index f203f7c08a..a2cacc3e07 100644
--- a/bootstrap/lib/kernel/ebin/inet_res.beam
+++ b/bootstrap/lib/kernel/ebin/inet_res.beam
diff --git a/bootstrap/lib/kernel/ebin/inet_sctp.beam b/bootstrap/lib/kernel/ebin/inet_sctp.beam
index a12c138257..c844e2ee34 100644
--- a/bootstrap/lib/kernel/ebin/inet_sctp.beam
+++ b/bootstrap/lib/kernel/ebin/inet_sctp.beam
diff --git a/bootstrap/lib/kernel/ebin/inet_tcp.beam b/bootstrap/lib/kernel/ebin/inet_tcp.beam
index 8453fe15e8..55b65ada4e 100644
--- a/bootstrap/lib/kernel/ebin/inet_tcp.beam
+++ b/bootstrap/lib/kernel/ebin/inet_tcp.beam
diff --git a/bootstrap/lib/kernel/ebin/inet_tcp_dist.beam b/bootstrap/lib/kernel/ebin/inet_tcp_dist.beam
index f25d7689f5..603f26de67 100644
--- a/bootstrap/lib/kernel/ebin/inet_tcp_dist.beam
+++ b/bootstrap/lib/kernel/ebin/inet_tcp_dist.beam
diff --git a/bootstrap/lib/kernel/ebin/inet_udp.beam b/bootstrap/lib/kernel/ebin/inet_udp.beam
index 17fef57714..46ce14c110 100644
--- a/bootstrap/lib/kernel/ebin/inet_udp.beam
+++ b/bootstrap/lib/kernel/ebin/inet_udp.beam
diff --git a/bootstrap/lib/kernel/ebin/kernel.app b/bootstrap/lib/kernel/ebin/kernel.app
index e6ca001e08..55445f83c6 100644
--- a/bootstrap/lib/kernel/ebin/kernel.app
+++ b/bootstrap/lib/kernel/ebin/kernel.app
@@ -88,6 +88,13 @@
              inet_udp,
 	     inet_sctp,
              pg2,
+             raw_file_io,
+             raw_file_io_compressed,
+             raw_file_io_deflate,
+             raw_file_io_delayed,
+             raw_file_io_inflate,
+             raw_file_io_list,
+             raw_file_io_raw,
 	     seq_trace,
 	     standard_error,
 	     wrap_log_reader]},
@@ -120,6 +127,6 @@
   {applications, []},
   {env, [{error_logger, tty}]},
   {mod, {kernel, []}},
-  {runtime_dependencies, ["erts-9.1.1", "stdlib-3.4.3", "sasl-3.0"]}
+  {runtime_dependencies, ["erts-10.0", "stdlib-3.5", "sasl-3.0"]}
  ]
 }.
diff --git a/bootstrap/lib/kernel/ebin/kernel.appup b/bootstrap/lib/kernel/ebin/kernel.appup
index 519e83f7e4..7ddb592671 100644
--- a/bootstrap/lib/kernel/ebin/kernel.appup
+++ b/bootstrap/lib/kernel/ebin/kernel.appup
@@ -16,7 +16,7 @@
 %% limitations under the License.
 %%
 %% %CopyrightEnd%
-{"5.3.1",
+{"5.4",
  %% Up from - max one major revision back
  [{<<"5\\.3(\\.[0-9]+)*">>,[restart_new_emulator]}], % OTP-20.*
  %% Down to - max one major revision back
diff --git a/bootstrap/lib/kernel/ebin/kernel.beam b/bootstrap/lib/kernel/ebin/kernel.beam
index 4000653c44..0a997bddd4 100644
--- a/bootstrap/lib/kernel/ebin/kernel.beam
+++ b/bootstrap/lib/kernel/ebin/kernel.beam
diff --git a/bootstrap/lib/kernel/ebin/kernel_config.beam b/bootstrap/lib/kernel/ebin/kernel_config.beam
index c557c45967..ffb06f2aef 100644
--- a/bootstrap/lib/kernel/ebin/kernel_config.beam
+++ b/bootstrap/lib/kernel/ebin/kernel_config.beam
diff --git a/bootstrap/lib/kernel/ebin/local_tcp.beam b/bootstrap/lib/kernel/ebin/local_tcp.beam
index a21fed9c88..02c5848f11 100644
--- a/bootstrap/lib/kernel/ebin/local_tcp.beam
+++ b/bootstrap/lib/kernel/ebin/local_tcp.beam
diff --git a/bootstrap/lib/kernel/ebin/net_adm.beam b/bootstrap/lib/kernel/ebin/net_adm.beam
index f50856393d..f2eac80afe 100644
--- a/bootstrap/lib/kernel/ebin/net_adm.beam
+++ b/bootstrap/lib/kernel/ebin/net_adm.beam
diff --git a/bootstrap/lib/kernel/ebin/net_kernel.beam b/bootstrap/lib/kernel/ebin/net_kernel.beam
index 3d59085f05..f352e2c064 100644
--- a/bootstrap/lib/kernel/ebin/net_kernel.beam
+++ b/bootstrap/lib/kernel/ebin/net_kernel.beam
diff --git a/bootstrap/lib/kernel/ebin/os.beam b/bootstrap/lib/kernel/ebin/os.beam
index cedf7bf49e..98c44e8fba 100644
--- a/bootstrap/lib/kernel/ebin/os.beam
+++ b/bootstrap/lib/kernel/ebin/os.beam
diff --git a/bootstrap/lib/kernel/ebin/pg2.beam b/bootstrap/lib/kernel/ebin/pg2.beam
index b99d8ba810..4d1a79a94c 100644
--- a/bootstrap/lib/kernel/ebin/pg2.beam
+++ b/bootstrap/lib/kernel/ebin/pg2.beam
diff --git a/bootstrap/lib/kernel/ebin/ram_file.beam b/bootstrap/lib/kernel/ebin/ram_file.beam
index af9159a318..ca476c5f7d 100644
--- a/bootstrap/lib/kernel/ebin/ram_file.beam
+++ b/bootstrap/lib/kernel/ebin/ram_file.beam
diff --git a/bootstrap/lib/kernel/ebin/raw_file_io.beam b/bootstrap/lib/kernel/ebin/raw_file_io.beam
new file mode 100644
index 0000000000..734a051882
--- /dev/null
+++ b/bootstrap/lib/kernel/ebin/raw_file_io.beam
diff --git a/bootstrap/lib/kernel/ebin/raw_file_io_compressed.beam b/bootstrap/lib/kernel/ebin/raw_file_io_compressed.beam
new file mode 100644
index 0000000000..caa3d9ac6b
--- /dev/null
+++ b/bootstrap/lib/kernel/ebin/raw_file_io_compressed.beam
diff --git a/bootstrap/lib/kernel/ebin/raw_file_io_deflate.beam b/bootstrap/lib/kernel/ebin/raw_file_io_deflate.beam
new file mode 100644
index 0000000000..62c28195a3
--- /dev/null
+++ b/bootstrap/lib/kernel/ebin/raw_file_io_deflate.beam
diff --git a/bootstrap/lib/kernel/ebin/raw_file_io_delayed.beam b/bootstrap/lib/kernel/ebin/raw_file_io_delayed.beam
new file mode 100644
index 0000000000..3090c454bf
--- /dev/null
+++ b/bootstrap/lib/kernel/ebin/raw_file_io_delayed.beam
diff --git a/bootstrap/lib/kernel/ebin/raw_file_io_inflate.beam b/bootstrap/lib/kernel/ebin/raw_file_io_inflate.beam
new file mode 100644
index 0000000000..1ed3abc73d
--- /dev/null
+++ b/bootstrap/lib/kernel/ebin/raw_file_io_inflate.beam
diff --git a/bootstrap/lib/kernel/ebin/raw_file_io_list.beam b/bootstrap/lib/kernel/ebin/raw_file_io_list.beam
new file mode 100644
index 0000000000..283f3b892d
--- /dev/null
+++ b/bootstrap/lib/kernel/ebin/raw_file_io_list.beam
diff --git a/bootstrap/lib/kernel/ebin/raw_file_io_raw.beam b/bootstrap/lib/kernel/ebin/raw_file_io_raw.beam
new file mode 100644
index 0000000000..b47a67055d
--- /dev/null
+++ b/bootstrap/lib/kernel/ebin/raw_file_io_raw.beam
diff --git a/bootstrap/lib/kernel/ebin/rpc.beam b/bootstrap/lib/kernel/ebin/rpc.beam
index 909cf49410..abaec4bbd8 100644
--- a/bootstrap/lib/kernel/ebin/rpc.beam
+++ b/bootstrap/lib/kernel/ebin/rpc.beam
diff --git a/bootstrap/lib/kernel/ebin/seq_trace.beam b/bootstrap/lib/kernel/ebin/seq_trace.beam
index 3de0a5d940..1d1e277bf3 100644
--- a/bootstrap/lib/kernel/ebin/seq_trace.beam
+++ b/bootstrap/lib/kernel/ebin/seq_trace.beam
diff --git a/bootstrap/lib/kernel/ebin/standard_error.beam b/bootstrap/lib/kernel/ebin/standard_error.beam
index 015f2c19cb..b35659983e 100644
--- a/bootstrap/lib/kernel/ebin/standard_error.beam
+++ b/bootstrap/lib/kernel/ebin/standard_error.beam
diff --git a/bootstrap/lib/kernel/ebin/user.beam b/bootstrap/lib/kernel/ebin/user.beam
index 947bc0f642..006fd607c0 100644
--- a/bootstrap/lib/kernel/ebin/user.beam
+++ b/bootstrap/lib/kernel/ebin/user.beam
diff --git a/bootstrap/lib/kernel/ebin/user_drv.beam b/bootstrap/lib/kernel/ebin/user_drv.beam
index b6ac29d5c4..d6bb443081 100644
--- a/bootstrap/lib/kernel/ebin/user_drv.beam
+++ b/bootstrap/lib/kernel/ebin/user_drv.beam
diff --git a/bootstrap/lib/kernel/ebin/user_sup.beam b/bootstrap/lib/kernel/ebin/user_sup.beam
index f5e0d1112a..df6a0be44b 100644
--- a/bootstrap/lib/kernel/ebin/user_sup.beam
+++ b/bootstrap/lib/kernel/ebin/user_sup.beam
diff --git a/bootstrap/lib/kernel/ebin/wrap_log_reader.beam b/bootstrap/lib/kernel/ebin/wrap_log_reader.beam
index 57038df042..40f3ecdfc7 100644
--- a/bootstrap/lib/kernel/ebin/wrap_log_reader.beam
+++ b/bootstrap/lib/kernel/ebin/wrap_log_reader.beam
diff --git a/bootstrap/lib/stdlib/ebin/array.beam b/bootstrap/lib/stdlib/ebin/array.beam
index ce8145374e..904513df6b 100644
--- a/bootstrap/lib/stdlib/ebin/array.beam
+++ b/bootstrap/lib/stdlib/ebin/array.beam
diff --git a/bootstrap/lib/stdlib/ebin/base64.beam b/bootstrap/lib/stdlib/ebin/base64.beam
index 00c908062a..8670e9cf7f 100644
--- a/bootstrap/lib/stdlib/ebin/base64.beam
+++ b/bootstrap/lib/stdlib/ebin/base64.beam
diff --git a/bootstrap/lib/stdlib/ebin/beam_lib.beam b/bootstrap/lib/stdlib/ebin/beam_lib.beam
index f763827539..9282e46c90 100644
--- a/bootstrap/lib/stdlib/ebin/beam_lib.beam
+++ b/bootstrap/lib/stdlib/ebin/beam_lib.beam
diff --git a/bootstrap/lib/stdlib/ebin/binary.beam b/bootstrap/lib/stdlib/ebin/binary.beam
index 70c0873a8e..85fc484c32 100644
--- a/bootstrap/lib/stdlib/ebin/binary.beam
+++ b/bootstrap/lib/stdlib/ebin/binary.beam
diff --git a/bootstrap/lib/stdlib/ebin/c.beam b/bootstrap/lib/stdlib/ebin/c.beam
index 9e30687b57..b9be0ec3c8 100644
--- a/bootstrap/lib/stdlib/ebin/c.beam
+++ b/bootstrap/lib/stdlib/ebin/c.beam
diff --git a/bootstrap/lib/stdlib/ebin/calendar.beam b/bootstrap/lib/stdlib/ebin/calendar.beam
index fb7b882218..ec7237faeb 100644
--- a/bootstrap/lib/stdlib/ebin/calendar.beam
+++ b/bootstrap/lib/stdlib/ebin/calendar.beam
diff --git a/bootstrap/lib/stdlib/ebin/dets.beam b/bootstrap/lib/stdlib/ebin/dets.beam
index 603110cbf8..e104c135f3 100644
--- a/bootstrap/lib/stdlib/ebin/dets.beam
+++ b/bootstrap/lib/stdlib/ebin/dets.beam
diff --git a/bootstrap/lib/stdlib/ebin/dets_server.beam b/bootstrap/lib/stdlib/ebin/dets_server.beam
index d67eda05c6..389140d14f 100644
--- a/bootstrap/lib/stdlib/ebin/dets_server.beam
+++ b/bootstrap/lib/stdlib/ebin/dets_server.beam
diff --git a/bootstrap/lib/stdlib/ebin/dets_utils.beam b/bootstrap/lib/stdlib/ebin/dets_utils.beam
index 3a3801fd5d..458a7a964f 100644
--- a/bootstrap/lib/stdlib/ebin/dets_utils.beam
+++ b/bootstrap/lib/stdlib/ebin/dets_utils.beam
diff --git a/bootstrap/lib/stdlib/ebin/dets_v9.beam b/bootstrap/lib/stdlib/ebin/dets_v9.beam
index 475aeefcd8..59ff4675bb 100644
--- a/bootstrap/lib/stdlib/ebin/dets_v9.beam
+++ b/bootstrap/lib/stdlib/ebin/dets_v9.beam
diff --git a/bootstrap/lib/stdlib/ebin/dict.beam b/bootstrap/lib/stdlib/ebin/dict.beam
index 08fd0f07a7..72fd947f5e 100644
--- a/bootstrap/lib/stdlib/ebin/dict.beam
+++ b/bootstrap/lib/stdlib/ebin/dict.beam
diff --git a/bootstrap/lib/stdlib/ebin/digraph.beam b/bootstrap/lib/stdlib/ebin/digraph.beam
index 7434821dda..62b7c6d2e6 100644
--- a/bootstrap/lib/stdlib/ebin/digraph.beam
+++ b/bootstrap/lib/stdlib/ebin/digraph.beam
diff --git a/bootstrap/lib/stdlib/ebin/digraph_utils.beam b/bootstrap/lib/stdlib/ebin/digraph_utils.beam
index 11ec1d3b7c..6b0158ce48 100644
--- a/bootstrap/lib/stdlib/ebin/digraph_utils.beam
+++ b/bootstrap/lib/stdlib/ebin/digraph_utils.beam
diff --git a/bootstrap/lib/stdlib/ebin/edlin.beam b/bootstrap/lib/stdlib/ebin/edlin.beam
index 1cabe095b3..6dd4f50887 100644
--- a/bootstrap/lib/stdlib/ebin/edlin.beam
+++ b/bootstrap/lib/stdlib/ebin/edlin.beam
diff --git a/bootstrap/lib/stdlib/ebin/edlin_expand.beam b/bootstrap/lib/stdlib/ebin/edlin_expand.beam
index 8579266b8f..db7a6780ca 100644
--- a/bootstrap/lib/stdlib/ebin/edlin_expand.beam
+++ b/bootstrap/lib/stdlib/ebin/edlin_expand.beam
diff --git a/bootstrap/lib/stdlib/ebin/epp.beam b/bootstrap/lib/stdlib/ebin/epp.beam
index 22c0978854..117acec27f 100644
--- a/bootstrap/lib/stdlib/ebin/epp.beam
+++ b/bootstrap/lib/stdlib/ebin/epp.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_abstract_code.beam b/bootstrap/lib/stdlib/ebin/erl_abstract_code.beam
index 7db89cb79e..8999166466 100644
--- a/bootstrap/lib/stdlib/ebin/erl_abstract_code.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_abstract_code.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_anno.beam b/bootstrap/lib/stdlib/ebin/erl_anno.beam
index 11bd496e2e..122f562563 100644
--- a/bootstrap/lib/stdlib/ebin/erl_anno.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_anno.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_bits.beam b/bootstrap/lib/stdlib/ebin/erl_bits.beam
index 944b7e3d0f..11ab24851e 100644
--- a/bootstrap/lib/stdlib/ebin/erl_bits.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_bits.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_compile.beam b/bootstrap/lib/stdlib/ebin/erl_compile.beam
index d39b5a29b0..ed41f0347f 100644
--- a/bootstrap/lib/stdlib/ebin/erl_compile.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_compile.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_eval.beam b/bootstrap/lib/stdlib/ebin/erl_eval.beam
index fc33e5d727..72c9d51cf9 100644
--- a/bootstrap/lib/stdlib/ebin/erl_eval.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_eval.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_expand_records.beam b/bootstrap/lib/stdlib/ebin/erl_expand_records.beam
index 146f0cc6bd..a22c1eac2f 100644
--- a/bootstrap/lib/stdlib/ebin/erl_expand_records.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_expand_records.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_internal.beam b/bootstrap/lib/stdlib/ebin/erl_internal.beam
index beaab5658b..fd21c22f81 100644
--- a/bootstrap/lib/stdlib/ebin/erl_internal.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_internal.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_lint.beam b/bootstrap/lib/stdlib/ebin/erl_lint.beam
index d018b33132..c194bda041 100644
--- a/bootstrap/lib/stdlib/ebin/erl_lint.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_lint.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_parse.beam b/bootstrap/lib/stdlib/ebin/erl_parse.beam
index ce2c86c6e9..7f0e173b3d 100644
--- a/bootstrap/lib/stdlib/ebin/erl_parse.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_parse.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_pp.beam b/bootstrap/lib/stdlib/ebin/erl_pp.beam
index 5c5a46d8bb..b2104c97df 100644
--- a/bootstrap/lib/stdlib/ebin/erl_pp.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_pp.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_scan.beam b/bootstrap/lib/stdlib/ebin/erl_scan.beam
index d36202515a..982f377630 100644
--- a/bootstrap/lib/stdlib/ebin/erl_scan.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_scan.beam
diff --git a/bootstrap/lib/stdlib/ebin/erl_tar.beam b/bootstrap/lib/stdlib/ebin/erl_tar.beam
index 6887230609..5ccd9e3bc5 100644
--- a/bootstrap/lib/stdlib/ebin/erl_tar.beam
+++ b/bootstrap/lib/stdlib/ebin/erl_tar.beam
diff --git a/bootstrap/lib/stdlib/ebin/error_logger_file_h.beam b/bootstrap/lib/stdlib/ebin/error_logger_file_h.beam
index cac19681cc..04d3fe7952 100644
--- a/bootstrap/lib/stdlib/ebin/error_logger_file_h.beam
+++ b/bootstrap/lib/stdlib/ebin/error_logger_file_h.beam
diff --git a/bootstrap/lib/stdlib/ebin/error_logger_tty_h.beam b/bootstrap/lib/stdlib/ebin/error_logger_tty_h.beam
index 788a7c2fcf..94368ffd53 100644
--- a/bootstrap/lib/stdlib/ebin/error_logger_tty_h.beam
+++ b/bootstrap/lib/stdlib/ebin/error_logger_tty_h.beam
diff --git a/bootstrap/lib/stdlib/ebin/escript.beam b/bootstrap/lib/stdlib/ebin/escript.beam
index 10982c84ce..213393794d 100644
--- a/bootstrap/lib/stdlib/ebin/escript.beam
+++ b/bootstrap/lib/stdlib/ebin/escript.beam
diff --git a/bootstrap/lib/stdlib/ebin/ets.beam b/bootstrap/lib/stdlib/ebin/ets.beam
index c2b113b79e..d82ec7d3c0 100644
--- a/bootstrap/lib/stdlib/ebin/ets.beam
+++ b/bootstrap/lib/stdlib/ebin/ets.beam
diff --git a/bootstrap/lib/stdlib/ebin/eval_bits.beam b/bootstrap/lib/stdlib/ebin/eval_bits.beam
index 72a88827f5..fb695d86fe 100644
--- a/bootstrap/lib/stdlib/ebin/eval_bits.beam
+++ b/bootstrap/lib/stdlib/ebin/eval_bits.beam
diff --git a/bootstrap/lib/stdlib/ebin/file_sorter.beam b/bootstrap/lib/stdlib/ebin/file_sorter.beam
index bb2af6922b..e16f904d3c 100644
--- a/bootstrap/lib/stdlib/ebin/file_sorter.beam
+++ b/bootstrap/lib/stdlib/ebin/file_sorter.beam
diff --git a/bootstrap/lib/stdlib/ebin/filelib.beam b/bootstrap/lib/stdlib/ebin/filelib.beam
index 1378390c61..87810111b6 100644
--- a/bootstrap/lib/stdlib/ebin/filelib.beam
+++ b/bootstrap/lib/stdlib/ebin/filelib.beam
diff --git a/bootstrap/lib/stdlib/ebin/filename.beam b/bootstrap/lib/stdlib/ebin/filename.beam
index a2fcb7bbd7..03de7c6152 100644
--- a/bootstrap/lib/stdlib/ebin/filename.beam
+++ b/bootstrap/lib/stdlib/ebin/filename.beam
diff --git a/bootstrap/lib/stdlib/ebin/gb_sets.beam b/bootstrap/lib/stdlib/ebin/gb_sets.beam
index 4dec91bb83..97405caca0 100644
--- a/bootstrap/lib/stdlib/ebin/gb_sets.beam
+++ b/bootstrap/lib/stdlib/ebin/gb_sets.beam
diff --git a/bootstrap/lib/stdlib/ebin/gb_trees.beam b/bootstrap/lib/stdlib/ebin/gb_trees.beam
index dd3a7076bc..e62ee69cec 100644
--- a/bootstrap/lib/stdlib/ebin/gb_trees.beam
+++ b/bootstrap/lib/stdlib/ebin/gb_trees.beam
diff --git a/bootstrap/lib/stdlib/ebin/gen.beam b/bootstrap/lib/stdlib/ebin/gen.beam
index 7da423e0c6..de761e2ccb 100644
--- a/bootstrap/lib/stdlib/ebin/gen.beam
+++ b/bootstrap/lib/stdlib/ebin/gen.beam
diff --git a/bootstrap/lib/stdlib/ebin/gen_event.beam b/bootstrap/lib/stdlib/ebin/gen_event.beam
index afeb6775ef..dd24351d71 100644
--- a/bootstrap/lib/stdlib/ebin/gen_event.beam
+++ b/bootstrap/lib/stdlib/ebin/gen_event.beam
diff --git a/bootstrap/lib/stdlib/ebin/gen_fsm.beam b/bootstrap/lib/stdlib/ebin/gen_fsm.beam
index 9bb60f185c..132b948434 100644
--- a/bootstrap/lib/stdlib/ebin/gen_fsm.beam
+++ b/bootstrap/lib/stdlib/ebin/gen_fsm.beam
diff --git a/bootstrap/lib/stdlib/ebin/gen_server.beam b/bootstrap/lib/stdlib/ebin/gen_server.beam
index 27981c75b2..68f678ff03 100644
--- a/bootstrap/lib/stdlib/ebin/gen_server.beam
+++ b/bootstrap/lib/stdlib/ebin/gen_server.beam
diff --git a/bootstrap/lib/stdlib/ebin/gen_statem.beam b/bootstrap/lib/stdlib/ebin/gen_statem.beam
index 8123f65a42..05932db2f2 100644
--- a/bootstrap/lib/stdlib/ebin/gen_statem.beam
+++ b/bootstrap/lib/stdlib/ebin/gen_statem.beam
diff --git a/bootstrap/lib/stdlib/ebin/io.beam b/bootstrap/lib/stdlib/ebin/io.beam
index 18f66f5443..40109e2a13 100644
--- a/bootstrap/lib/stdlib/ebin/io.beam
+++ b/bootstrap/lib/stdlib/ebin/io.beam
diff --git a/bootstrap/lib/stdlib/ebin/io_lib.beam b/bootstrap/lib/stdlib/ebin/io_lib.beam
index a68d77b7f6..bb018a3dbb 100644
--- a/bootstrap/lib/stdlib/ebin/io_lib.beam
+++ b/bootstrap/lib/stdlib/ebin/io_lib.beam
diff --git a/bootstrap/lib/stdlib/ebin/io_lib_format.beam b/bootstrap/lib/stdlib/ebin/io_lib_format.beam
index c02da85965..a24adeab6d 100644
--- a/bootstrap/lib/stdlib/ebin/io_lib_format.beam
+++ b/bootstrap/lib/stdlib/ebin/io_lib_format.beam
diff --git a/bootstrap/lib/stdlib/ebin/io_lib_fread.beam b/bootstrap/lib/stdlib/ebin/io_lib_fread.beam
index a1c1e35ff6..2eebe1c85d 100644
--- a/bootstrap/lib/stdlib/ebin/io_lib_fread.beam
+++ b/bootstrap/lib/stdlib/ebin/io_lib_fread.beam
diff --git a/bootstrap/lib/stdlib/ebin/io_lib_pretty.beam b/bootstrap/lib/stdlib/ebin/io_lib_pretty.beam
index 6ed1e3b7cc..a51f7c896e 100644
--- a/bootstrap/lib/stdlib/ebin/io_lib_pretty.beam
+++ b/bootstrap/lib/stdlib/ebin/io_lib_pretty.beam
diff --git a/bootstrap/lib/stdlib/ebin/lib.beam b/bootstrap/lib/stdlib/ebin/lib.beam
index 98a7f91ab8..dc99df9c5f 100644
--- a/bootstrap/lib/stdlib/ebin/lib.beam
+++ b/bootstrap/lib/stdlib/ebin/lib.beam
diff --git a/bootstrap/lib/stdlib/ebin/lists.beam b/bootstrap/lib/stdlib/ebin/lists.beam
index f1c5f21315..c95243debf 100644
--- a/bootstrap/lib/stdlib/ebin/lists.beam
+++ b/bootstrap/lib/stdlib/ebin/lists.beam
diff --git a/bootstrap/lib/stdlib/ebin/log_mf_h.beam b/bootstrap/lib/stdlib/ebin/log_mf_h.beam
index 920286c40e..985a9502f5 100644
--- a/bootstrap/lib/stdlib/ebin/log_mf_h.beam
+++ b/bootstrap/lib/stdlib/ebin/log_mf_h.beam
diff --git a/bootstrap/lib/stdlib/ebin/maps.beam b/bootstrap/lib/stdlib/ebin/maps.beam
index f07f4f922d..85e997bb1c 100644
--- a/bootstrap/lib/stdlib/ebin/maps.beam
+++ b/bootstrap/lib/stdlib/ebin/maps.beam
diff --git a/bootstrap/lib/stdlib/ebin/ms_transform.beam b/bootstrap/lib/stdlib/ebin/ms_transform.beam
index b4c8527161..d924a50d82 100644
--- a/bootstrap/lib/stdlib/ebin/ms_transform.beam
+++ b/bootstrap/lib/stdlib/ebin/ms_transform.beam
diff --git a/bootstrap/lib/stdlib/ebin/orddict.beam b/bootstrap/lib/stdlib/ebin/orddict.beam
index 9d65872e90..57a23fbe98 100644
--- a/bootstrap/lib/stdlib/ebin/orddict.beam
+++ b/bootstrap/lib/stdlib/ebin/orddict.beam
diff --git a/bootstrap/lib/stdlib/ebin/ordsets.beam b/bootstrap/lib/stdlib/ebin/ordsets.beam
index 487a232b15..b966590d8d 100644
--- a/bootstrap/lib/stdlib/ebin/ordsets.beam
+++ b/bootstrap/lib/stdlib/ebin/ordsets.beam
diff --git a/bootstrap/lib/stdlib/ebin/pool.beam b/bootstrap/lib/stdlib/ebin/pool.beam
index 160474fc2a..c6b6e8314d 100644
--- a/bootstrap/lib/stdlib/ebin/pool.beam
+++ b/bootstrap/lib/stdlib/ebin/pool.beam
diff --git a/bootstrap/lib/stdlib/ebin/proc_lib.beam b/bootstrap/lib/stdlib/ebin/proc_lib.beam
index 7c9cfad78e..90659c9df9 100644
--- a/bootstrap/lib/stdlib/ebin/proc_lib.beam
+++ b/bootstrap/lib/stdlib/ebin/proc_lib.beam
diff --git a/bootstrap/lib/stdlib/ebin/proplists.beam b/bootstrap/lib/stdlib/ebin/proplists.beam
index 176a0e0db5..b00ac13e9d 100644
--- a/bootstrap/lib/stdlib/ebin/proplists.beam
+++ b/bootstrap/lib/stdlib/ebin/proplists.beam
diff --git a/bootstrap/lib/stdlib/ebin/qlc.beam b/bootstrap/lib/stdlib/ebin/qlc.beam
index 592f7b4740..9f3daf5dc7 100644
--- a/bootstrap/lib/stdlib/ebin/qlc.beam
+++ b/bootstrap/lib/stdlib/ebin/qlc.beam
diff --git a/bootstrap/lib/stdlib/ebin/qlc_pt.beam b/bootstrap/lib/stdlib/ebin/qlc_pt.beam
index 1a7d678227..e287e2002f 100644
--- a/bootstrap/lib/stdlib/ebin/qlc_pt.beam
+++ b/bootstrap/lib/stdlib/ebin/qlc_pt.beam
diff --git a/bootstrap/lib/stdlib/ebin/queue.beam b/bootstrap/lib/stdlib/ebin/queue.beam
index fb24f979e1..ca0c6794ca 100644
--- a/bootstrap/lib/stdlib/ebin/queue.beam
+++ b/bootstrap/lib/stdlib/ebin/queue.beam
diff --git a/bootstrap/lib/stdlib/ebin/rand.beam b/bootstrap/lib/stdlib/ebin/rand.beam
index 887a09385c..7921ac2497 100644
--- a/bootstrap/lib/stdlib/ebin/rand.beam
+++ b/bootstrap/lib/stdlib/ebin/rand.beam
diff --git a/bootstrap/lib/stdlib/ebin/re.beam b/bootstrap/lib/stdlib/ebin/re.beam
index e59c6b0bc6..415ff7bb43 100644
--- a/bootstrap/lib/stdlib/ebin/re.beam
+++ b/bootstrap/lib/stdlib/ebin/re.beam
diff --git a/bootstrap/lib/stdlib/ebin/sets.beam b/bootstrap/lib/stdlib/ebin/sets.beam
index 48165b7598..b4a15dc9db 100644
--- a/bootstrap/lib/stdlib/ebin/sets.beam
+++ b/bootstrap/lib/stdlib/ebin/sets.beam
diff --git a/bootstrap/lib/stdlib/ebin/shell.beam b/bootstrap/lib/stdlib/ebin/shell.beam
index fab94d5509..4df0c4f888 100644
--- a/bootstrap/lib/stdlib/ebin/shell.beam
+++ b/bootstrap/lib/stdlib/ebin/shell.beam
diff --git a/bootstrap/lib/stdlib/ebin/slave.beam b/bootstrap/lib/stdlib/ebin/slave.beam
index abab0acf33..0cbd0067c0 100644
--- a/bootstrap/lib/stdlib/ebin/slave.beam
+++ b/bootstrap/lib/stdlib/ebin/slave.beam
diff --git a/bootstrap/lib/stdlib/ebin/sofs.beam b/bootstrap/lib/stdlib/ebin/sofs.beam
index aa8ed3d99c..9f909e608b 100644
--- a/bootstrap/lib/stdlib/ebin/sofs.beam
+++ b/bootstrap/lib/stdlib/ebin/sofs.beam
diff --git a/bootstrap/lib/stdlib/ebin/stdlib.app b/bootstrap/lib/stdlib/ebin/stdlib.app
index 8b51b51d26..a8abad00ea 100644
--- a/bootstrap/lib/stdlib/ebin/stdlib.app
+++ b/bootstrap/lib/stdlib/ebin/stdlib.app
@@ -101,13 +101,14 @@
 	     timer,
 	     unicode,
              unicode_util,
+	     uri_string,
 	     win32reg,
 	     zip]},
   {registered,[timer_server,rsh_starter,take_over_monitor,pool_master,
                dets]},
   {applications, [kernel]},
   {env, []},
-  {runtime_dependencies, ["sasl-3.0","kernel-5.4.1","erts-9.1.1","crypto-3.3",
+  {runtime_dependencies, ["sasl-3.0","kernel-6.0","erts-10.0","crypto-3.3",
 			  "compiler-5.0"]}
 ]}.
 
diff --git a/bootstrap/lib/stdlib/ebin/stdlib.appup b/bootstrap/lib/stdlib/ebin/stdlib.appup
index 40ae15f055..9996bfae81 100644
--- a/bootstrap/lib/stdlib/ebin/stdlib.appup
+++ b/bootstrap/lib/stdlib/ebin/stdlib.appup
@@ -16,7 +16,7 @@
 %% limitations under the License.
 %%
 %% %CopyrightEnd%
-{"3.4.1",
+{"3.4.2",
  %% Up from - max one major revision back
  [{<<"3\\.4(\\.[0-9]+)*">>,[restart_new_emulator]}], % OTP-20.*
  %% Down to - max one major revision back
diff --git a/bootstrap/lib/stdlib/ebin/string.beam b/bootstrap/lib/stdlib/ebin/string.beam
index 0ec9ecbc28..ff5fab297d 100644
--- a/bootstrap/lib/stdlib/ebin/string.beam
+++ b/bootstrap/lib/stdlib/ebin/string.beam
diff --git a/bootstrap/lib/stdlib/ebin/supervisor.beam b/bootstrap/lib/stdlib/ebin/supervisor.beam
index f7f11b9b26..66d9248765 100644
--- a/bootstrap/lib/stdlib/ebin/supervisor.beam
+++ b/bootstrap/lib/stdlib/ebin/supervisor.beam
diff --git a/bootstrap/lib/stdlib/ebin/supervisor_bridge.beam b/bootstrap/lib/stdlib/ebin/supervisor_bridge.beam
index 4d913ca680..599e490e4c 100644
--- a/bootstrap/lib/stdlib/ebin/supervisor_bridge.beam
+++ b/bootstrap/lib/stdlib/ebin/supervisor_bridge.beam
diff --git a/bootstrap/lib/stdlib/ebin/sys.beam b/bootstrap/lib/stdlib/ebin/sys.beam
index 291c750da3..9781a563a7 100644
--- a/bootstrap/lib/stdlib/ebin/sys.beam
+++ b/bootstrap/lib/stdlib/ebin/sys.beam
diff --git a/bootstrap/lib/stdlib/ebin/timer.beam b/bootstrap/lib/stdlib/ebin/timer.beam
index 4c570cbee6..7397379a29 100644
--- a/bootstrap/lib/stdlib/ebin/timer.beam
+++ b/bootstrap/lib/stdlib/ebin/timer.beam
diff --git a/bootstrap/lib/stdlib/ebin/unicode.beam b/bootstrap/lib/stdlib/ebin/unicode.beam
index 8d5ad0ce98..a59453c666 100644
--- a/bootstrap/lib/stdlib/ebin/unicode.beam
+++ b/bootstrap/lib/stdlib/ebin/unicode.beam
diff --git a/bootstrap/lib/stdlib/ebin/unicode_util.beam b/bootstrap/lib/stdlib/ebin/unicode_util.beam
index 4fcf959fe6..511b8aae79 100644
--- a/bootstrap/lib/stdlib/ebin/unicode_util.beam
+++ b/bootstrap/lib/stdlib/ebin/unicode_util.beam
diff --git a/bootstrap/lib/stdlib/ebin/uri_string.beam b/bootstrap/lib/stdlib/ebin/uri_string.beam
new file mode 100644
index 0000000000..fe4033a513
--- /dev/null
+++ b/bootstrap/lib/stdlib/ebin/uri_string.beam
diff --git a/bootstrap/lib/stdlib/ebin/win32reg.beam b/bootstrap/lib/stdlib/ebin/win32reg.beam
index 49d62a74e1..416ed15bfd 100644
--- a/bootstrap/lib/stdlib/ebin/win32reg.beam
+++ b/bootstrap/lib/stdlib/ebin/win32reg.beam
diff --git a/bootstrap/lib/stdlib/ebin/zip.beam b/bootstrap/lib/stdlib/ebin/zip.beam
index 4d8925d2e9..ea54e17a17 100644
--- a/bootstrap/lib/stdlib/ebin/zip.beam
+++ b/bootstrap/lib/stdlib/ebin/zip.beam
diff --git a/erts/Makefile b/erts/Makefile
index 0393ccc759..60c70b6a2c 100644
--- a/erts/Makefile
+++ b/erts/Makefile
@@ -145,3 +145,7 @@ release:
 .PHONY: release_docs
 release_docs:
 	$(V_at)( cd doc/src && $(MAKE) $@ )
+
+.PHONY: xmllint
+xmllint:
+	$(MAKE) -C doc/src $@
diff --git a/erts/configure.in b/erts/configure.in
index 9dec562f33..2f6043ee85 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -595,6 +595,8 @@ AS_HELP_STRING([--enable-pgo],
   esac
 ],enable_pgo=default)
 
+LM_CHECK_ENABLE_CFLAG([-fprofile-use -fprofile-correction -Werror],[PROFILE_CORRECTION])
+
 USE_PGO=false
 AC_MSG_CHECKING([whether to do PGO of erts])
 if test $enable_pgo = no; then
@@ -607,22 +609,16 @@ elif test $CROSS_COMPILING = yes; then
   fi
 elif test "X$host" = "Xwin32"; then
   AC_MSG_RESULT([no, not supported in windows])
-elif test "X$PROFILE_GENERATE" = "Xtrue" -a "X$PROFILE_USE" = "Xtrue"; then
+elif test "X$PROFILE_GENERATE" = "Xtrue" -a "X$PROFILE_USE" = "Xtrue" -a "X$PROFILE_CORRECTION" = "Xtrue"; then
+  ## We need -fprofile-generate and -fprofile-correction support to use PGO with
+  ## gcc as multiple threads run within the executed object files
   USE_PGO=true
-  AC_MSG_RESULT([yes, using -fprofile-generate])
   PROFILE_COMPILER=gcc
-# check if $CC accepts -fprofile-correction, if so we can use PGO on multi-threaded files.
-  LM_CHECK_ENABLE_CFLAG([-fprofile-use -fprofile-correction -Werror],[PROFILE_CORRECTION])
-  if test "X$PROFILE_CORRECTION" = "Xtrue"; then
-    PROFILE_CORRECTION="-fprofile-correction"
-  else
-    PROFILE_CORRECTION=""
-  fi
-  AC_SUBST(PROFILE_CORRECTION)
+  AC_MSG_RESULT([yes, using -fprofile-generate -fprofile-correction])
 elif test "X$PROFILE_INSTR_GENERATE" = "Xtrue" -a "X$PROFILE_INSTR_USE" = "Xtrue"; then
   USE_PGO=true
-  AC_MSG_RESULT([yes, using -fprofile-instr-generate])
   PROFILE_COMPILER=clang
+  AC_MSG_RESULT([yes, using -fprofile-instr-generate])
 else
   if $enable_pgo = yes; then
     AC_MSG_ERROR(cannot use PGO with this compiler)
@@ -2766,6 +2762,20 @@ if test X${enable_hipe} = Xyes && test X$ARCH = Xamd64; then
 			     LDFLAGS=$saved_LDFLAGS])])])
 fi
 
+if test X${enable_hipe} = Xyes; then
+   case $OPSYS in
+	linux)
+		ppcBEAMLDFLAGS="-Wl,-m,elf32ppc"
+		ppc64BEAMLDFLAGS="-Wl,-m,elf64ppc,-T,hipe/elf64ppc.x"
+		;;
+	darwin)
+		amd64BEAMLDFLAGS="-pagezero_size 0x10000000"
+		;;
+   esac
+   archVarName="${ARCH}BEAMLDFLAGS"
+   eval HIPEBEAMLDFLAGS=\$$archVarName
+fi
+AC_SUBST(HIPEBEAMLDFLAGS)
 
 if test X${enable_fp_exceptions} = Xauto ; then
    case $host_os in
@@ -3760,6 +3770,39 @@ dnl
 LM_FIND_EMU_CC
 
 dnl
+dnl Test whether code pointers are always short (32 bits).
+dnl
+
+AC_MSG_CHECKING([whether the code model is small])
+saved_LDFLAGS="$LDFLAGS"
+LDFLAGS="$LDFLAGS $HIPEBEAMLDFLAGS"
+AC_TRY_RUN([
+   #include <stdlib.h>
+   int main() {
+    if ((unsigned long long)&main < (1ull << 32)) {
+       exit(0);
+    }
+    exit(1);
+   }
+],
+erl_code_model_small=yes,
+erl_code_model_small=no,
+erl_code_model_small=no)
+AC_MSG_RESULT([$erl_code_model_small])
+LDFLAGS="$saved_LDFLAGS"
+case $erl_code_model_small in
+     yes)
+        AC_DEFINE(CODE_MODEL_SMALL,[1],
+	[Define if the code model is small (code fits below 2Gb)])
+	CODE_MODEL=small
+	;;
+     no)
+	CODE_MODEL=unknown
+        ;;
+esac
+AC_SUBST(CODE_MODEL)
+
+dnl
 dnl DTrace & LTTNG
 dnl
 case $DYNAMIC_TRACE_FRAMEWORK in
diff --git a/erts/doc/src/Makefile b/erts/doc/src/Makefile
index 444adf4a6e..c4f1baf89e 100644
--- a/erts/doc/src/Makefile
+++ b/erts/doc/src/Makefile
@@ -1,7 +1,7 @@
-# 
+#
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
+# Copyright Ericsson AB 1997-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@
 # limitations under the License.
 #
 # %CopyrightEnd%
-# 
+#
 
 SPECS_ESRC = ../../preloaded/src/
 
@@ -66,11 +66,10 @@ XML_REF3_FILES = \
 	zlib.xml
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml \
-	part_notes_history.xml
+	part.xml
 
 XML_CHAPTER_FILES = \
+	introduction.xml \
 	tty.xml \
 	match_spec.xml \
 	crash_dump.xml \
@@ -82,8 +81,7 @@ XML_CHAPTER_FILES = \
 	erl_dist_protocol.xml \
 	communication.xml \
 	time_correction.xml \
-	notes.xml \
-	notes_history.xml
+	notes.xml
 
 TOPDOCDIR=../../../doc
 
@@ -116,9 +114,9 @@ SPECS_FILES = $(XML_REF3_EFILES:%.xml=$(SPECDIR)/specs_%.xml)
 TOP_SPECS_FILE = specs.xml
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 KERNEL_SRC=$(ERL_TOP)/lib/kernel/src
 KERNEL_INCLUDE=$(ERL_TOP)/lib/kernel/include
@@ -146,7 +144,7 @@ $(INFO_FILE): $(INFO_FILE_SRC) $(ERL_TOP)/make/$(TARGET)/otp.mk
 	sed -e 's;%RELEASE%;$(SYSTEM_VSN);' $(INFO_FILE_SRC) > $(INFO_FILE)
 
 
-debug opt: 
+debug opt:
 
 clean:
 	rm -rf $(HTMLDIR)/*
@@ -154,7 +152,7 @@ clean:
 	rm -f $(MAN3DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
 	rm -f $(SPECDIR)/*
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 $(SPECDIR)/specs_%.xml:
 	escript $(SPECS_EXTRACTOR) $(SPECS_FLAGS) \
@@ -162,7 +160,7 @@ $(SPECDIR)/specs_%.xml:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index 6f6eca2a0b..bd824b3405 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -1641,9 +1641,7 @@
       <tag>The <c>.erlang</c> startup file</tag>
       <item>
         <p>When Erlang/OTP is started, the system searches for a file named
-          <c>.erlang</c> in the directory where Erlang/OTP is started. If not
-          found, the user's home directory is searched for an <c>.erlang</c>
-          file.</p>
+        <c>.erlang</c> in the user's home directory.</p>
         <p>If an <c>.erlang</c> file is found, it is assumed to contain valid
           Erlang expressions. These expressions are evaluated as if they were
           input to the shell.</p>
diff --git a/erts/doc/src/erl_nif.xml b/erts/doc/src/erl_nif.xml
index 419e41693e..23f0c66429 100644
--- a/erts/doc/src/erl_nif.xml
+++ b/erts/doc/src/erl_nif.xml
@@ -367,6 +367,8 @@ return term;</code>
             <c>enif_ioq_deq()</c></seealso></item>
             <item><seealso marker="#enif_ioq_peek">
             <c>enif_ioq_peek()</c></seealso></item>
+            <item><seealso marker="#enif_ioq_peek_head">
+            <c>enif_ioq_peek_head()</c></seealso></item>
             <item><seealso marker="#enif_inspect_iovec">
             <c>enif_inspect_iovec()</c></seealso></item>
             <item><seealso marker="#enif_free_iovec">
@@ -952,6 +954,8 @@ typedef struct {
       <desc>
         <p>Allocates memory of <c>size</c> bytes.</p>
         <p>Returns <c>NULL</c> if the allocation fails.</p>
+        <p>The returned pointer is suitably aligned for any built-in type that
+          fit in the allocated memory.</p>
       </desc>
     </func>
 
@@ -1681,8 +1685,7 @@ enif_inspect_iovec(env, max_elements, term, &amp;tail, &amp;iovec);
       <fsummary>Peek inside the IO Queue</fsummary>
       <desc>
         <p>Get the I/O queue as a pointer to an array of <c>SysIOVec</c>s.
-          It also returns the number of elements in <c>iovlen</c>.
-          This is the only way to get data out of the queue.</p>
+           It also returns the number of elements in <c>iovlen</c>.</p>
         <p>Nothing is removed from the queue by this function, that must be done
           with <seealso marker="#enif_ioq_deq"><c>enif_ioq_deq</c></seealso>.</p>
          <p>The returned array is suitable to use with the Unix system
@@ -1691,6 +1694,21 @@ enif_inspect_iovec(env, max_elements, term, &amp;tail, &amp;iovec);
     </func>
 
     <func>
+      <name><ret>int</ret>
+      <nametext>enif_ioq_peek_head(ErlNifEnv *env, ErlNifIOQueue *q, size_t *size, ERL_NIF_TERM *bin_term)</nametext></name>
+      <fsummary>Peek the head of the IO Queue.</fsummary>
+      <desc>
+        <p>Get the head of the IO Queue as a binary term.</p>
+        <p>If <c>size</c> is not <c>NULL</c>, the size of the head is placed
+           there.</p>
+        <p>Nothing is removed from the queue by this function, that must be done
+           with <seealso marker="#enif_ioq_deq"><c>enif_ioq_deq</c></seealso>.</p>
+        <p>Returns <c>true</c> on success, or <c>false</c> if the queue is
+           empty.</p>
+      </desc>
+    </func>
+
+    <func>
       <name><ret>size_t</ret>
       <nametext>enif_ioq_size(ErlNifIOQueue *q)</nametext></name>
       <fsummary>Get the current size of the IO Queue</fsummary>
@@ -2760,6 +2778,20 @@ enif_map_iterator_destroy(env, &amp;iter);</code>
     </func>
 
     <func>
+      <name><ret>void *</ret>
+        <nametext>enif_realloc(void* ptr, size_t size)</nametext></name>
+      <fsummary>Reallocate dynamic memory.</fsummary>
+      <desc>
+        <p>Reallocates memory allocated by
+          <seealso marker="#enif_alloc"><c>enif_alloc</c></seealso> to
+          <c>size</c> bytes.</p>
+        <p>Returns <c>NULL</c> if the reallocation fails.</p>
+        <p>The returned pointer is suitably aligned for any built-in type that
+          fit in the allocated memory.</p>
+      </desc>
+    </func>
+
+    <func>
       <name><ret>int</ret>
         <nametext>enif_realloc_binary(ErlNifBinary* bin, size_t size)</nametext>
       </name>
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index 8dbebe880d..d7404fa3ce 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -557,9 +557,7 @@ hello
       <name name="binary_to_term" arity="2"/>
       <fsummary>Decode an Erlang external term format binary.</fsummary>
       <desc>
-        <p>As <c>binary_to_term/1</c>, but takes options that affect decoding
-          of the binary.</p>
-        <p>Option:</p>
+        <p>As <c>binary_to_term/1</c>, but takes these options:</p>
         <taglist>
           <tag><c>safe</c></tag>
           <item>
@@ -575,18 +573,31 @@ hello
               creation of new external function references.
               None of those resources are garbage collected, so unchecked
               creation of them can exhaust available memory.</p>
-          </item>
-        </taglist>
-        <p>Failure: <c>badarg</c> if <c>safe</c> is specified and unsafe
-          data is decoded.</p>
         <pre>
-> <input>binary_to_term(&lt;&lt;131,100,0,5,104,101,108,108,111>>, [safe]).</input>
+> <input>binary_to_term(&lt;&lt;131,100,0,5,"hello">>, [safe]).</input>
 ** exception error: bad argument
 > <input>hello.</input>
 hello
-> <input>binary_to_term(&lt;&lt;131,100,0,5,104,101,108,108,111>>, [safe]).</input>
+> <input>binary_to_term(&lt;&lt;131,100,0,5,"hello">>, [safe]).</input>
 hello
 </pre>
+          </item>
+          <tag><c>used</c></tag>
+          <item>
+	    <p>Changes the return value to <c>{Term, Used}</c> where <c>Used</c>
+	    is the number of bytes actually read from <c>Binary</c>.</p>
+        <pre>
+> <input>Input = &lt;&lt;131,100,0,5,"hello","world">>.</input>
+&lt;&lt;131,100,0,5,104,101,108,108,111,119,111,114,108,100>>
+> <input>{Term, Used} = binary_to_term(Input, [used]).</input>
+{hello, 9}
+> <input>split_binary(Input, Used).</input>
+{&lt;&lt;131,100,0,5,104,101,108,108,111>>, &lt;&lt;"world">>}
+</pre>
+          </item>
+        </taglist>
+        <p>Failure: <c>badarg</c> if <c>safe</c> is specified and unsafe
+          data is decoded.</p>
         <p>See also
           <seealso marker="#term_to_binary/1"><c>term_to_binary/1</c></seealso>,
           <seealso marker="#binary_to_term/1">
@@ -1974,39 +1985,26 @@ true</pre>
       <fsummary>Get the call stack back-trace of the last exception.</fsummary>
       <type name="stack_item"/>
       <desc>
-        <p>Gets the call stack back-trace (<em>stacktrace</em>) for an
-          exception that has just been caught
-	  in the calling process as a list of
-          <c>{<anno>Module</anno>,<anno>Function</anno>,<anno>Arity</anno>,<anno>Location</anno>}</c>
-          tuples. Field <c><anno>Arity</anno></c> in the first tuple can be the
-          argument list of that function call instead of an arity integer,
-          depending on the exception.</p>
-        <p>If there has not been any exceptions in a process, the
-          stacktrace is <c>[]</c>. After a code change for the process,
-          the stacktrace can also be reset to <c>[]</c>.</p>
-	<p><c>erlang:get_stacktrace/0</c> is only guaranteed to return
-	a stacktrace if called (directly or indirectly) from within the
-	scope of a <c>try</c> expression. That is, the following call works:</p>
+	<warning><p><c>erlang:get_stacktrace/0</c> is deprecated and will stop working
+	in a future release.</p></warning>
+      <p>Instead of using <c>erlang:get_stacktrace/0</c> to retrieve
+      the call stack back-trace, use the following syntax:</p>
 <pre>
 try Expr
 catch
-  C:R ->
-   {C,R,erlang:get_stacktrace()}
+  Class:Reason:Stacktrace ->
+   {Class,Reason,Stacktrace}
 end</pre>
-	<p>As does this call:</p>
-<pre>
-try Expr
-catch
-  C:R ->
-   {C,R,helper()}
-end
-
-helper() ->
-  erlang:get_stacktrace().</pre>
-
-        <warning><p>In a future release,
-        <c>erlang:get_stacktrace/0</c> will return <c>[]</c> if called
-        from outside a <c>try</c> expression.</p></warning>
+        <p><c>erlang:get_stacktrace/0</c> retrieves the call stack back-trace
+        (<em>stacktrace</em>) for an exception that has just been
+        caught in the calling process as a list of
+        <c>{<anno>Module</anno>,<anno>Function</anno>,<anno>Arity</anno>,<anno>Location</anno>}</c>
+        tuples. Field <c><anno>Arity</anno></c> in the first tuple can
+        be the argument list of that function call instead of an arity
+        integer, depending on the exception.</p>
+        <p>If there has not been any exceptions in a process, the
+          stacktrace is <c>[]</c>. After a code change for the process,
+          the stacktrace can also be reset to <c>[]</c>.</p>
         <p>The stacktrace is the same data as operator <c>catch</c>
           returns, for example:</p>
         <pre>
@@ -2029,6 +2027,18 @@ helper() ->
             where the exception occurred or the function was called.
           </item>
         </taglist>
+        <warning><p>Developers should rely on stacktrace entries only for
+          debugging purposes.</p>
+          <p>The VM performs tail call optimization, which
+          does not add new entries to the stacktrace, and also limits stacktraces
+          to a certain depth. Furthermore, compiler options, optimizations and
+          future changes may add or remove stacktrace entries, causing any code
+          that expects the stacktrace to be in a certain order or contain specific
+          items to fail.</p>
+          <p>The only exception to this rule is <c>error:undef</c> which
+          guarantees to include the <anno>Module</anno>, <anno>Function</anno> and <anno>Arity</anno>
+          of the attempted function as the first stacktrace entry.</p>
+        </warning>	
         <p>See also
           <seealso marker="#error/1"><c>error/1</c></seealso> and
           <seealso marker="#error/2"><c>error/2</c></seealso>.</p>
@@ -3098,7 +3108,10 @@ os_prompt%</pre>
             <p>The total amount of memory currently allocated for
               the emulator that is not directly related to any Erlang
               process. Memory presented as <c>processes</c> is not
-              included in this memory.</p>
+              included in this memory. <seealso marker="tools:instrument">
+              <c>instrument(3)</c></seealso> can be used to
+              get a more detailed breakdown of what memory is part
+              of this type.</p>
           </item>
           <tag><c>atom</c></tag>
           <item>
@@ -3335,25 +3348,6 @@ RealSystem = system + MissedSystem</code>
               monitored process resides). </p></item>
         </taglist>
 
-        <p>If an attempt is made to monitor a process on an older node
-          (where remote process monitoring is not implemented or
-          where remote process monitoring by registered name is not
-          implemented), the call fails with <c>badarg</c>.</p>
-        <note>
-          <p>The format of the <c>'DOWN'</c> message changed in ERTS
-            5.2 (Erlang/OTP R9B) for monitoring
-            <em>by registered name</em>. Element <c>Object</c> of
-            the <c>'DOWN'</c> message could in earlier versions
-            sometimes be the process identifier of the monitored process and sometimes
-            be the registered name. Now element <c>Object</c> is
-            always a tuple consisting of the registered name and
-            the node name. Processes on new nodes (ERTS 5.2
-            or higher versions) always get <c>'DOWN'</c> messages on
-            the new format even if they are monitoring processes on old
-            nodes. Processes on old nodes always get <c>'DOWN'</c>
-            messages on the old format.</p>
-        </note>
-
         <taglist>
         <tag>Monitoring a <marker id="monitor_process"/><c>process</c></tag>
         <item>
@@ -3361,7 +3355,19 @@ RealSystem = system + MissedSystem</code>
             process identified by <c><anno>Item</anno></c>, which can be a
             <c>pid()</c> (local or remote), an atom <c>RegisteredName</c> or
             a tuple <c>{RegisteredName, Node}</c> for a registered process,
-            located elsewhere.</p>
+          located elsewhere.</p>
+
+        <note><p>Before ERTS 10.0 (OTP 21.0), monitoring a process could fail with
+	  <c>badarg</c> if the monitored process resided on a primitive node
+	  (such as erl_interface or jinterface), where remote process monitoring
+	  is not implemented.</p>
+	  <p>Now, such a call to <c>monitor</c> will instead succeed and a
+	  monitor is created. But the monitor will only supervise the
+	  connection. That is, a <c>{'DOWN', _, process, _, noconnection}</c> is
+	  the only message that may be received, as the primitive node have no
+	  way of reporting the status of the monitored process.</p>
+	</note>
+
         </item>
 
         <tag>Monitoring a <marker id="monitor_port"/><c>port</c></tag>
@@ -3826,6 +3832,12 @@ RealSystem = system + MissedSystem</code>
           </item>
           <tag><c>{env, <anno>Env</anno>}</c></tag>
           <item>
+	    <p>
+	      Types:<br/>
+	      &nbsp;&nbsp;<c><anno>Name</anno> = </c><seealso marker="kernel:os#type-env_var_name"><c>os:env_var_name()</c></seealso><br/>
+	      &nbsp;&nbsp;<c><anno>Val</anno> = </c><seealso marker="kernel:os#type-env_var_value"><c>os:env_var_value()</c></seealso><c> | false</c><br/>
+	      &nbsp;&nbsp;<c>Env = [{<anno>Name</anno>, <anno>Val</anno>}]</c>
+	    </p>
             <p>Only valid for <c>{spawn, <anno>Command</anno>}</c>, and
               <c>{spawn_executable, <anno>FileName</anno>}</c>.
               The environment of the started process is extended using
@@ -3840,7 +3852,13 @@ RealSystem = system + MissedSystem</code>
               exception is <c><anno>Val</anno></c> being the atom
               <c>false</c> (in analogy with
               <seealso marker="kernel:os#getenv/1"><c>os:getenv/1</c></seealso>,
-              which removes the environment variable.</p>
+              which removes the environment variable.
+	    </p>
+	    <p>
+	      For information about encoding requirements, see documentation
+	      of the types for <c><anno>Name</anno></c> and
+	      <c><anno>Val</anno></c>.
+	    </p>
           </item>
           <tag><c>{args, [ string() | binary() ]}</c></tag>
           <item>
@@ -4706,11 +4724,11 @@ RealSystem = system + MissedSystem</code>
     </func>
 
     <func>
-      <name name="process_flag" arity="2" clause_i="3"/>
+      <name name="process_flag" arity="2" clause_i="3"
+	    anchor="process_flag_min_heap_size"/>
       <fsummary>Set process flag min_heap_size for the calling process.
       </fsummary>
       <desc>
-        <marker id="process_flag_min_heap_size"/>
         <p>Changes the minimum heap size for the calling process.</p>
         <p>Returns the old value of the flag.</p>
       </desc>
@@ -4728,12 +4746,12 @@ RealSystem = system + MissedSystem</code>
     </func>
 
     <func>
-      <name name="process_flag" arity="2" clause_i="5"/>
+      <name name="process_flag" arity="2" clause_i="5"
+	    anchor="process_flag_max_heap_size"/>
       <fsummary>Set process flag max_heap_size for the calling process.
       </fsummary>
       <type name="max_heap_size"/>
       <desc>
-        <marker id="process_flag_max_heap_size"/>
         <p>This flag sets the maximum heap size for the calling process.
           If <c><anno>MaxHeapSize</anno></c> is an integer, the system default
           values for <c>kill</c> and <c>error_logger</c> are used.
@@ -4802,12 +4820,12 @@ RealSystem = system + MissedSystem</code>
     </func>
 
     <func>
-      <name name="process_flag" arity="2" clause_i="6"/>
+      <name name="process_flag" arity="2" clause_i="6"
+	    anchor="process_flag_message_queue_data"/>
       <fsummary>Set process flag message_queue_data for the calling process.
       </fsummary>
       <type name="message_queue_data"/>
       <desc>
-        <marker id="process_flag_message_queue_data"/>
         <p>This flag determines how messages in the message queue
           are stored, as follows:</p>
         <taglist>
@@ -4829,7 +4847,7 @@ RealSystem = system + MissedSystem</code>
         <p>The default <c>message_queue_data</c> process flag is determined
           by command-line argument <seealso marker="erl#+hmqd">
           <c>+hmqd</c></seealso> in <c>erl(1)</c>.</p>
-        <p>If the process potentially can get many messages,
+        <p>If the process potentially can get many messages in its queue,
           you are advised to set the flag to <c>off_heap</c>. This
           because a garbage collection with many messages placed on
           the heap can become extremely expensive and the process can
@@ -4844,11 +4862,12 @@ RealSystem = system + MissedSystem</code>
     </func>
 
     <func>
-      <name name="process_flag" arity="2" clause_i="7"/>
+      <name name="process_flag" arity="2" clause_i="7"
+	    anchor="process_flag_priority"/>
       <fsummary>Set process flag priority for the calling process.</fsummary>
       <type name="priority_level"/>
       <desc>
-        <p><marker id="process_flag_priority"></marker>
+        <p>
           Sets the process priority. <c><anno>Level</anno></c> is an atom.
           Four priority levels exist: <c>low</c>,
           <c>normal</c>, <c>high</c>, and <c>max</c>. Default
@@ -5100,11 +5119,15 @@ RealSystem = system + MissedSystem</code>
           <tag><c>{binary, <anno>BinInfo</anno>}</c></tag>
           <item>
             <p><c><anno>BinInfo</anno></c> is a list containing miscellaneous
-              information about binaries currently referred to by this
-              process. This <c><anno>InfoTuple</anno></c> can be changed or
+              information about binaries on the heap of this
+              process.
+              This <c><anno>InfoTuple</anno></c> can be changed or
               removed without prior notice. In the current implementation
               <c><anno>BinInfo</anno></c> is a list of tuples. The tuples
               contain; <c>BinaryId</c>, <c>BinarySize</c>, <c>BinaryRefcCount</c>.</p>
+            <p>The message queue is on the heap depending on the
+              process flag <seealso marker="#process_flag_message_queue_data">
+            <c>message_queue_data</c></seealso>.</p>
           </item>
           <tag><c>{catchlevel, <anno>CatchLevel</anno>}</c></tag>
           <item>
@@ -6323,10 +6346,10 @@ true</pre>
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="1"/>
+      <name name="statistics" arity="1" clause_i="1"
+	    anchor="statistics_active_tasks"/>
       <fsummary>Information about active processes and ports.</fsummary>
       <desc>
-        <marker id="statistics_active_tasks"></marker>
         <p>Returns the same as
 	<seealso marker="#statistics_active_tasks_all">
         <c>statistics(active_tasks_all)</c></seealso>
@@ -6338,10 +6361,10 @@ true</pre>
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="2"/>
+      <name name="statistics" arity="1" clause_i="2"
+	    anchor="statistics_active_tasks_all"/>
       <fsummary>Information about active processes and ports.</fsummary>
       <desc>
-        <marker id="statistics_active_tasks_all"></marker>
         <p>Returns a list where each element represents the amount
           of active processes and ports on each run queue and its
           associated schedulers. That is, the number of processes and
@@ -6389,10 +6412,10 @@ true</pre>
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="4"/>
+      <name name="statistics" arity="1" clause_i="4"
+	    anchor="statistics_exact_reductions"/>
       <fsummary>Information about exact reductions.</fsummary>
       <desc>
-        <marker id="statistics_exact_reductions"></marker>
         <p>Returns the number of exact reductions.</p>
         <note>
           <p><c>statistics(exact_reductions)</c> is
@@ -6427,10 +6450,10 @@ true</pre>
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="7"/>
+      <name name="statistics" arity="1" clause_i="7"
+	    anchor="statistics_microstate_accounting"/>
       <fsummary>Information about microstate accounting.</fsummary>
       <desc>
-        <marker id="statistics_microstate_accounting"></marker>
         <p>Microstate accounting can be used to measure how much time the Erlang
           runtime system spends doing various tasks. It is designed to be as
           lightweight as possible, but some overhead exists when this
@@ -6570,10 +6593,10 @@ lists:map(
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="8"/>
+      <name name="statistics" arity="1" clause_i="8"
+	    anchor="statistics_reductions"/>
       <fsummary>Information about reductions.</fsummary>
       <desc>
-        <marker id="statistics_reductions"></marker>
         <p>Returns information about reductions, for example:</p>
         <pre>
 > <input>statistics(reductions).</input>
@@ -6589,9 +6612,10 @@ lists:map(
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="9"/>
+      <name name="statistics" arity="1" clause_i="9"
+	    anchor="statistics_run_queue"/>
       <fsummary>Information about the run-queues.</fsummary>
-      <desc><marker id="statistics_run_queue"></marker>
+      <desc>
         <p>Returns the total length of all normal run-queues. That is, the number
           of processes and ports that are ready to run on all available
           normal run-queues. Dirty run queues are not part of the
@@ -6605,9 +6629,10 @@ lists:map(
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="10"/>
+      <name name="statistics" arity="1" clause_i="10"
+	    anchor="statistics_run_queue_lengths"/>
       <fsummary>Information about the run-queue lengths.</fsummary>
-      <desc><marker id="statistics_run_queue_lengths"></marker>
+      <desc>
         <p>Returns the same as
 	<seealso marker="#statistics_run_queue_lengths_all">
         <c>statistics(run_queue_lengths_all)</c></seealso>
@@ -6619,9 +6644,10 @@ lists:map(
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="11"/>
+      <name name="statistics" arity="1" clause_i="11"
+	    anchor="statistics_run_queue_lengths_all"/>
       <fsummary>Information about the run-queue lengths.</fsummary>
-      <desc><marker id="statistics_run_queue_lengths_all"></marker>
+      <desc>
         <p>Returns a list where each element represents the amount
           of processes and ports ready to run for each run queue.
 	  Values for normal run queues are located first in the
@@ -6679,10 +6705,10 @@ lists:map(
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="13"/>
+      <name name="statistics" arity="1" clause_i="13"
+	    anchor="statistics_scheduler_wall_time"/>
       <fsummary>Information about each schedulers work time.</fsummary>
       <desc>
-        <marker id="statistics_scheduler_wall_time"></marker>
         <p>Returns a list of tuples with
           <c>{<anno>SchedulerId</anno>, <anno>ActiveTime</anno>,
           <anno>TotalTime</anno>}</c>, where
@@ -6800,10 +6826,10 @@ ok
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="14"/>
+      <name name="statistics" arity="1" clause_i="14"
+	    anchor="statistics_scheduler_wall_time_all"/>
       <fsummary>Information about each schedulers work time.</fsummary>
       <desc>
-        <marker id="statistics_scheduler_wall_time_all"></marker>
 	<p>The same as
 	<seealso marker="#statistics_scheduler_wall_time"><c>statistics(scheduler_wall_time)</c></seealso>,
 	except that it also include information about all dirty I/O
@@ -6825,9 +6851,10 @@ ok
       </desc>
     </func>
     <func>
-      <name name="statistics" arity="1" clause_i="15"/>
+      <name name="statistics" arity="1" clause_i="15"
+	    anchor="statistics_total_active_tasks"/>
       <fsummary>Information about active processes and ports.</fsummary>
-      <desc><marker id="statistics_total_active_tasks"></marker>
+      <desc>
         <p>The same as calling
 	<c>lists:sum(</c><seealso marker="#statistics_active_tasks"><c>statistics(active_tasks)</c></seealso><c>)</c>,
 	but more efficient.</p>
@@ -6835,9 +6862,10 @@ ok
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="16"/>
+      <name name="statistics" arity="1" clause_i="16"
+	    anchor="statistics_total_active_tasks_all"/>
       <fsummary>Information about active processes and ports.</fsummary>
-      <desc><marker id="statistics_total_active_tasks_all"></marker>
+      <desc>
         <p>The same as calling
 	<c>lists:sum(</c><seealso marker="#statistics_active_tasks_all"><c>statistics(active_tasks_all)</c></seealso><c>)</c>,
 	but more efficient.</p>
@@ -6845,9 +6873,10 @@ ok
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="17"/>
+      <name name="statistics" arity="1" clause_i="17"
+	    anchor="statistics_total_run_queue_lengths"/>
       <fsummary>Information about the run-queue lengths.</fsummary>
-      <desc><marker id="statistics_total_run_queue_lengths"></marker>
+      <desc>
         <p>The same as calling
 	<c>lists:sum(</c><seealso marker="#statistics_run_queue_lengths"><c>statistics(run_queue_lengths)</c></seealso><c>)</c>,
 	but more efficient.</p>
@@ -6855,9 +6884,10 @@ ok
     </func>
 
     <func>
-      <name name="statistics" arity="1" clause_i="18"/>
+      <name name="statistics" arity="1" clause_i="18"
+	    anchor="statistics_total_run_queue_lengths_all"/>
       <fsummary>Information about the run-queue lengths.</fsummary>
-      <desc><marker id="statistics_total_run_queue_lengths_all"></marker>
+      <desc>
         <p>The same as calling
 	<c>lists:sum(</c><seealso marker="#statistics_run_queue_lengths_all"><c>statistics(run_queue_lengths_all)</c></seealso><c>)</c>,
 	but more efficient.</p>
@@ -7005,7 +7035,8 @@ ok
     </func>
 
     <func>
-      <name name="system_flag" arity="2" clause_i="2"/>
+      <name name="system_flag" arity="2" clause_i="2"
+	    anchor="system_flag_cpu_topology"/>
       <fsummary>Set system flag <c>cpu_topology</c>.</fsummary>
       <type name="cpu_topology"/>
       <type name="level_entry"/>
@@ -7014,7 +7045,7 @@ ok
       <type name="info_list"/>
       <desc>
         <warning>
-          <p><marker id="system_flag_cpu_topology"></marker>
+          <p>
             <em>This argument is deprecated.</em>
             Instead of using this argument, use command-line argument
             <seealso marker="erts:erl#+sct"><c>+sct</c></seealso> in
@@ -7052,10 +7083,11 @@ ok
     </func>
 
     <func>
-      <name name="system_flag" arity="2" clause_i="3"/>
+      <name name="system_flag" arity="2" clause_i="3"
+	    anchor="system_flag_dirty_cpu_schedulers_online"/>
       <fsummary>Set system_flag_dirty_cpu_schedulers_online.</fsummary>
       <desc>
-        <p><marker id="system_flag_dirty_cpu_schedulers_online"></marker>
+        <p>
           Sets the number of dirty CPU schedulers online. Range is
           <c><![CDATA[1 <= DirtyCPUSchedulersOnline <= N]]></c>, where <c>N</c>
           is the smallest of the return values of
@@ -7099,10 +7131,11 @@ ok
     </func>
 
     <func>
-      <name name="system_flag" arity="2" clause_i="5"/>
+      <name name="system_flag" arity="2" clause_i="5"
+	    anchor="system_flag_microstate_accounting"/>
       <fsummary>Set system flag microstate_accounting.</fsummary>
       <desc>
-        <p><marker id="system_flag_microstate_accounting"></marker>
+        <p>
           Turns on/off microstate accounting measurements. When passing reset,
           all counters are reset to 0.</p>
         <p>For more information see
@@ -7144,28 +7177,29 @@ ok
     </func>
 
     <func>
-      <name name="system_flag" arity="2" clause_i="8"/>
+      <name name="system_flag" arity="2" clause_i="8"
+	    anchor="system_flag_max_heap_size"/>
       <fsummary>Set system flag max_heap_size.</fsummary>
       <type name="max_heap_size"/>
       <desc>
-        <marker id="system_flag_max_heap_size"></marker>
         <p>
           Sets the default maximum heap size settings for processes.
           The size is specified in words. The new <c>max_heap_size</c>
           effects only processes spawned efter the change has been made.
           <c>max_heap_size</c> can be set for individual processes using
           <seealso marker="#spawn_opt/4"><c>spawn_opt/2,3,4</c></seealso> or
-          <seealso marker="#process_flag_message_queue_data">
+          <seealso marker="#process_flag_max_heap_size">
           <c>process_flag/2</c></seealso>.</p>
         <p>Returns the old value of the flag.</p>
       </desc>
     </func>
 
     <func>
-      <name name="system_flag" arity="2" clause_i="9"/>
+      <name name="system_flag" arity="2" clause_i="9"
+	    anchor="system_flag_multi_scheduling"/>
       <fsummary>Set system flag multi_scheduling.</fsummary>
       <desc>
-        <p><marker id="system_flag_multi_scheduling"></marker>
+        <p>
           If multi-scheduling is enabled, more than one scheduler
           thread is used by the emulator. Multi-scheduling can be
           blocked in two different ways. Either all schedulers but
@@ -7217,12 +7251,13 @@ ok
     </func>
 
     <func>
-      <name name="system_flag" arity="2" clause_i="10"/>
+      <name name="system_flag" arity="2" clause_i="10"
+	    anchor="system_flag_scheduler_bind_type"/>
       <fsummary>Set system flag scheduler_bind_type.</fsummary>
       <type name="scheduler_bind_type"/>
       <desc>
         <warning>
-          <p><marker id="system_flag_scheduler_bind_type"></marker>
+          <p>
             <em>This argument is deprecated.</em>
             Instead of using this argument, use command-line argument
             <seealso marker="erts:erl#+sbt"><c>+sbt</c></seealso> in
@@ -7343,10 +7378,11 @@ ok
     </func>
 
     <func>
-      <name name="system_flag" arity="2" clause_i="11"/>
+      <name name="system_flag" arity="2" clause_i="11"
+	    anchor="system_flag_scheduler_wall_time"/>
       <fsummary>Set system flag scheduler_wall_time.</fsummary>
       <desc>
-        <p><marker id="system_flag_scheduler_wall_time"></marker>
+        <p>
           Turns on or off scheduler wall time measurements.</p>
         <p>For more information, see
           <seealso marker="#statistics_scheduler_wall_time">
@@ -7355,10 +7391,11 @@ ok
     </func>
 
     <func>
-      <name name="system_flag" arity="2" clause_i="12"/>
+      <name name="system_flag" arity="2" clause_i="12"
+	    anchor="system_flag_schedulers_online"/>
       <fsummary>Set system flag schedulers_online.</fsummary>
       <desc>
-        <p><marker id="system_flag_schedulers_online"></marker>
+        <p>
           Sets the number of schedulers online. Range is
           <c><![CDATA[1 <= SchedulersOnline <=
           erlang:system_info(schedulers)]]></c>.</p>
@@ -7397,10 +7434,11 @@ ok
     </func>
 
     <func>
-      <name name="system_flag" arity="2" clause_i="14"/>
+      <name name="system_flag" arity="2" clause_i="14"
+	    anchor="system_flag_time_offset"/>
       <fsummary>Finalize the time offset.</fsummary>
       <desc>
-        <p><marker id="system_flag_time_offset"></marker>
+        <p>
           Finalizes the <seealso marker="#time_offset/0">time offset</seealso>
           when <seealso marker="time_correction#Single_Time_Warp_Mode">single
           time warp mode</seealso> is used. If another time warp mode
@@ -7573,7 +7611,8 @@ ok
     </func>
 
     <func>
-      <name name="system_info" arity="1" clause_i="12"/>
+      <name name="system_info" arity="1" clause_i="12"
+	    anchor="system_info_cpu_topology"/>
       <name name="system_info" arity="1" clause_i="13"/>
       <fsummary>Information about the CPU topology of the system.</fsummary>
       <type name="cpu_topology"/>
@@ -7601,7 +7640,6 @@ ok
       </type_desc>
       <desc>
         <marker id="system_info_cpu_topology_tags"></marker>
-        <marker id="system_info_cpu_topology"></marker>
         <p>Returns various information about the CPU topology of
           the current system (emulator) as specified by
           <c><anno>Item</anno></c>:</p>
@@ -9002,6 +9040,10 @@ hello
 </pre>
         <p>See also <seealso marker="#binary_to_term/1">
           <c>binary_to_term/1</c></seealso>.</p>
+        <note>
+          <p>There is no guarantee that this function will return
+            the same encoded representation for the same term.</p>
+        </note>
       </desc>
     </func>
 
diff --git a/erts/doc/src/erlc.xml b/erts/doc/src/erlc.xml
index 7355be488b..2214b76a51 100644
--- a/erts/doc/src/erlc.xml
+++ b/erts/doc/src/erlc.xml
@@ -143,6 +143,14 @@
         <p>Produces a Makefile rule to track header dependencies. The
           rule is sent to <c>stdout</c>. No object file is produced.</p>
       </item>
+
+      <tag><c>-MMD</c></tag>
+      <item>
+        <p>Generate dependencies as a side-effect. The object file
+	will be produced as normal. This option overrides the
+	option <c><![CDATA[-M]]></c>.</p>
+      </item>
+
       <tag><c>-MF &lt;Makefile&gt;</c></tag>
       <item>
         <p>As option <c><![CDATA[-M]]></c>, except that the
diff --git a/erts/doc/src/fascicules.xml b/erts/doc/src/fascicules.xml
deleted file mode 100644
index 1c371bd9c8..0000000000
--- a/erts/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    ERTS User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    ERTS Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml
index ecbc36e26f..e91e56e581 100644
--- a/erts/doc/src/notes.xml
+++ b/erts/doc/src/notes.xml
@@ -31,6 +31,252 @@
   </header>
   <p>This document describes the changes made to the ERTS application.</p>
 
+<section><title>Erts 9.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fix a bug in tracing where the {caller} match spec
+	    function would be set to undefined incorrectly when used
+	    in conjunction with return_to or return_trace on some
+	    functions.</p>
+          <p>
+	    The functions effected are: erlang:put/2, erlang:erase/1,
+	    erlang:process_info/1,2, erlang:nif_load/2,
+	    erts_internal:garbage_collection/1 and
+	    erts_internal:check_process_code/1.</p>
+          <p>
+	    Because of this bug, the analysis done by fprof could
+	    become incorrect when the functions above are the
+	    tail-call in a function.</p>
+          <p>
+	    Own Id: OTP-14677</p>
+        </item>
+        <item>
+          <p>
+	    Fix emulator deadlock that would happen if
+	    <c>trap_exit</c> was set to true and a process sends an
+	    exit signal to itself using <c>exit(self(), Reason)</c>
+	    while receive tracing was enabled for that process.</p>
+          <p>
+	    Own Id: OTP-14678 Aux Id: ERL-495 </p>
+        </item>
+        <item>
+	    <p>Writing of crash dumps is significantly faster.</p>
+	    <p>Maps are now included in crash dumps.</p>
+	    <p>Constants terms would only be shown in one process,
+	    while other processes referencing the same constant term
+	    would show a marker for incomplete heap. </p>
+          <p>
+	    Own Id: OTP-14685 Aux Id: OTP-14611, OTP-14603, OTP-14595 </p>
+        </item>
+        <item>
+          <p>
+	    The fallback home directory for windows has been changed
+	    to be the PROFILE directory instead of the WINDOWS
+	    directory. The fallback is used when the environment
+	    variables HOMEDRIVE and HOMEPATH have not been set.</p>
+          <p>
+	    Own Id: OTP-14691</p>
+        </item>
+        <item>
+          <p>
+	    Fix bug for hipe compiled code using
+	    <c>&lt;&lt;X/utf32&gt;&gt;</c> binary construction that
+	    could cause faulty result or even VM crash.</p>
+          <p>
+	    On architectures other than x86_64, code need to be
+	    recompiled to benefit from this fix.</p>
+          <p>
+	    Own Id: OTP-14740</p>
+        </item>
+        <item>
+          <p>
+	    Fixed bug in <c>erlang:garbage_collect/2</c> and
+	    <c>erlang:check_process_code/3</c>, when called with
+	    option <c>{async,ReqestId}</c>. Could cause VM crash or
+	    heap corruption if <c>RequestId</c> was an immediate term
+	    (like a pid, atom or small integer). Bug exists since
+	    OTP-17.0.</p>
+          <p>
+	    Own Id: OTP-14752</p>
+        </item>
+        <item>
+	    <p>ERL_NIF_MINOR_VERSION wasn't bumped with the addition
+	    of <c>enif_ioq_*</c>.</p>
+          <p>
+	    Own Id: OTP-14779</p>
+        </item>
+        <item>
+	    <p>Purging of loaded code that contained "fake literals"
+	    (for example the magic reference obtained from
+	    '<c>ets:new/2</c>') would crash the runtime system.
+	    Corrected.</p>
+          <p>
+	    Own Id: OTP-14791</p>
+        </item>
+        <item>
+	    <p>Setting the size of the atom table to a number near
+	    2147483647 (using the '<c>+t</c>' option) would cause the
+	    emulator to exit with a failure to allocate a huge amount
+	    of memory. This has been corrected. Also the usage
+	    message for the '<c>+t</c>' option has been corrected to
+	    show the correct upper limit 2147483647 instead of 0.</p>
+          <p>
+	    Own Id: OTP-14796</p>
+        </item>
+        <item>
+	    <p>Fixed a bug that prevented registered process names
+	    from being resolved in lcnt results.</p>
+          <p>
+	    Own Id: OTP-14803</p>
+        </item>
+        <item>
+	    <p>Formatting bugs were fixed in several HiPE debug
+	    BIFs.</p>
+          <p>
+	    Own Id: OTP-14804</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+	    <p>Binaries and some other data in crash dumps are now
+	    encoded in base64 (instead of in hex), which will reduce
+	    the size of crash dumps.</p>
+	    <p>A few bugs in the handling of sub binaries in
+	    <c>crashdump_viewer</c> have been fixed.</p>
+          <p>
+	    Own Id: OTP-14686</p>
+        </item>
+        <item>
+          <p>
+	    Micro optimization for send operations of messages to
+	    other nodes. The local ack-message, which is otherwise
+	    sent back from TPC/IP port driver to sending client
+	    process, is now ignored earlier for distributed send
+	    operations.</p>
+          <p>
+	    Own Id: OTP-14689</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Erts 9.1.5</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>Fixed a bug in file closure on Unix; close(2) was
+	    retried on EINTR which could cause a different (recently
+	    opened) file to be closed as well.</p>
+          <p>
+	    Own Id: OTP-14775</p>
+        </item>
+        <item>
+          <p>
+	    A race-condition when tearing down a connection with
+	    active node monitors could cause the runtime system to
+	    crash.</p>
+          <p>
+	    This bug was introduced in ERTS version 8.0 (OTP 19.0).</p>
+          <p>
+	    Own Id: OTP-14781 Aux Id: OTP-13047 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Erts 9.1.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>Microstate accounting sometimes produced incorrect
+	    results for dirty schedulers.</p>
+          <p>
+	    Own Id: OTP-14707</p>
+        </item>
+        <item>
+	    <p>Fixed a regression in <c>zlib:gunzip/1</c> that
+	    prevented it from working when the decompressed size was
+	    a perfect multiple of 16384. This regression was
+	    introduced in 20.1.1</p>
+          <p>
+	    Own Id: OTP-14730 Aux Id: ERL-507 </p>
+        </item>
+        <item>
+	    <p>Fixed a memory corruption bug in
+	    <c>enif_inspect_iovec</c>; writable binaries stayed
+	    writable after entering the iovec.</p>
+          <p>
+	    Own Id: OTP-14745</p>
+        </item>
+        <item>
+	    <p>Fixed a crash in <c>enif_inspect_iovec</c> on
+	    encountering empty binaries.</p>
+          <p>
+	    Own Id: OTP-14750</p>
+        </item>
+        <item>
+	    <p><c>zlib:deflateParams/3</c> will no longer return
+	    <c>buf_error</c> when called after <c>zlib:deflate/2</c>
+	    with zlib <c>1.2.11</c>.</p>
+          <p>
+	    Own Id: OTP-14751</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Erts 9.1.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>Added zlib:set_controlling_process/2 to move a
+	    zstream() between processes.</p>
+          <p>
+	    Own Id: OTP-14672 Aux Id: ERL-494 </p>
+        </item>
+        <item>
+          <p>
+	    Fix so that schedulers are bound correctly when the first
+	    available cpu is not the first detected cpu. e.g. when
+	    using "taskset -c X..Y" when X is not equal to 0.</p>
+          <p>
+	    Own Id: OTP-14694</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Erts 9.1.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fixed bug that could cause a VM crash when a corrupt
+	    message is received on distribution channel from other
+	    node.</p>
+          <p>
+	    Own Id: OTP-14661 Aux Id: ERIERL-80 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Erts 9.1.1</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -2810,6 +3056,58 @@
 
 </section>
 
+<section><title>Erts 7.3.1.4</title>
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fix performance bug in pre-allocators that could cause
+	    them to permanently fall back on normal more expensive
+	    memory allocation. Pre-allocators are used for quick
+	    allocation of short lived meta data used by messages and
+	    other scheduled tasks. Bug exists since OTP_R15B02.</p>
+          <p>
+	    Own Id: OTP-14491</p>
+        </item>
+        <item>
+          <p>
+	    Fixed bug in operator <c>bxor</c> causing erroneuos
+	    result when one operand is a big <em>negative</em>
+	    integer with the lowest <c>N*W</c> bits as zero and the
+	    other operand not larger than <c>N*W</c> bits. <c>N</c>
+	    is an integer of 1 or larger and <c>W</c> is 32 or 64
+	    depending on word size.</p>
+          <p>
+	    Own Id: OTP-14514</p>
+        </item>
+        <item>
+          <p>
+	    A timer internal bit-field used for storing scheduler id
+	    was too small. As a result, VM internal timer data
+	    structures could become inconsistent when using 1024
+	    schedulers on the system. Note that systems with less
+	    than 1024 schedulers are not effected by this bug.</p>
+          <p>
+	    This bug was introduced in ERTS version 7.0 (OTP 18.0).</p>
+          <p>
+	    Own Id: OTP-14548 Aux Id: OTP-11997, ERL-468 </p>
+        </item>
+        <item>
+          <p>
+	    Fixed bug in <c>binary_to_term</c> and
+	    <c>binary_to_atom</c> that could cause VM crash.
+	    Typically happens when the last character of an UTF8
+	    string is in the range 128 to 255, but truncated to only
+	    one byte. Bug exists in <c>binary_to_term</c> since ERTS
+	    version 5.10.2 (OTP_R16B01) and <c>binary_to_atom</c>
+	    since ERTS version 9.0 (OTP-20.0).</p>
+          <p>
+	    Own Id: OTP-14590 Aux Id: ERL-474 </p>
+        </item>
+      </list>
+    </section>
+</section>
+
 <section><title>Erts 7.3.1.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/erts/doc/src/part_notes.xml b/erts/doc/src/part_notes.xml
deleted file mode 100644
index e579b7635d..0000000000
--- a/erts/doc/src/part_notes.xml
+++ /dev/null
@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>ERTS Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date>2004-09-07</date>
-    <rev>1.0</rev>
-  </header>
-  <description>
-    <p>The Erlang Runtime System application <em>ERTS</em>.</p>
-    <p>For information about older versions, see
-      <url href="part_notes_history_frame.html">Release Notes History</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/erts/doc/src/part_notes_history.xml b/erts/doc/src/part_notes_history.xml
deleted file mode 100644
index 277683a2b5..0000000000
--- a/erts/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2006</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>ERTS Release Notes History</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The Erlang Runtime System application <em>ERTS</em>.</p>
-  </description>
-  <xi:include href="notes_history.xml"/>
-</part>
-
diff --git a/erts/doc/src/run_erl.xml b/erts/doc/src/run_erl.xml
index a9b6a7e2c6..e4c1b943c4 100644
--- a/erts/doc/src/run_erl.xml
+++ b/erts/doc/src/run_erl.xml
@@ -181,6 +181,12 @@
       <item>
         <p>Controls the number of log files written before older
           files are reused. Defaults to 5, minimum is 2, maximum is 1000.</p>
+	<p>Note that, as a way to indicate the newest file, <c>run_erl</c> will
+	delete the oldest log file to maintain a "hole" in the file
+	sequences. For example, if log files #1, #2, #4 and #5 exists, that
+	means #2 is the latest and #4 is the oldest. You will therefore at most
+	get one less log file than the value set by
+	<c>RUN_ERL_LOG_GENERATIONS</c>.</p>
       </item>
       <tag><c>RUN_ERL_LOG_MAXSIZE</c></tag>
       <item>
diff --git a/erts/doc/src/zlib.xml b/erts/doc/src/zlib.xml
index f5cc1b1e64..6f4c42da27 100644
--- a/erts/doc/src/zlib.xml
+++ b/erts/doc/src/zlib.xml
@@ -71,6 +71,11 @@ list_to_binary([Compressed|Last])</pre>
       called prior to a call to
       <seealso marker="#inflate/2"><c>inflate/2</c></seealso>.
       </item>
+      <tag><c>not_on_controlling_process</c></tag>
+      <item>The stream was used by a process that doesn't control it. Use
+      <seealso marker="#set_controlling_process/2">
+      <c>set_controlling_process/2</c></seealso> if you need to transfer
+      a stream to a different process.</item>
       <tag><c>data_error</c></tag>
       <item>The data contains errors.
       </item>
@@ -740,6 +745,15 @@ loop(Z, Handler, {finished, Output}) ->
     </func>
 
     <func>
+      <name name="set_controlling_process" arity="2"/>
+      <fsummary>Transfers ownership of a zlib stream.</fsummary>
+      <desc>
+        <p>Changes the controlling process of <c><anno>Z</anno></c> to
+           <c><anno>Pid</anno></c>, which must be a local process.</p>
+      </desc>
+    </func>
+
+    <func>
       <name name="uncompress" arity="1"/>
       <fsummary>Uncompress data with standard zlib functionality.</fsummary>
       <desc>
diff --git a/erts/emulator/Makefile.in b/erts/emulator/Makefile.in
index eb39c5e4ec..15b65f1c71 100644
--- a/erts/emulator/Makefile.in
+++ b/erts/emulator/Makefile.in
@@ -74,9 +74,8 @@ endif
 endif
 
 ifeq ($(PROFILE_COMPILER), gcc)
-PROFILE_CORRECTION=@PROFILE_CORRECTION@
 PROFILE_GENERATE=-fprofile-generate
-PROFILE_USE=-fprofile-use $(PROFILE_CORRECTION)
+PROFILE_USE=-fprofile-use -fprofile-correction
 PROFILE_USE_DEPS=$(OBJDIR)/%_pu.gcda
 endif
 ifeq ($(PROFILE_COMPILER), clang)
@@ -240,16 +239,7 @@ ARCH=@ARCH@
 ultrasparcCFLAGS=-Wa,-xarch=v8plusa
 ARCHCFLAGS=$($(ARCH)CFLAGS)
 
-ifdef HIPE_ENABLED
-ifeq ($(OPSYS),linux)
-ppcBEAMLDFLAGS=-Wl,-m,elf32ppc
-ppc64BEAMLDFLAGS=-Wl,-m,elf64ppc,-T,hipe/elf64ppc.x
-endif
-ifeq ($(OPSYS),darwin)
-amd64BEAMLDFLAGS=-pagezero_size 0x10000000
-endif
-HIPEBEAMLDFLAGS=$($(ARCH)BEAMLDFLAGS)
-endif
+HIPEBEAMLDFLAGS=@HIPEBEAMLDFLAGS@
 
 ERTS_BUILD_FALLBACK_POLL=@ERTS_BUILD_FALLBACK_POLL@
 
@@ -577,6 +567,7 @@ $(TTF_DIR)/beam_tr_funcs.h \
 $(TTF_DIR)/OPCODES-GENERATED: $(OPCODE_TABLES) utils/beam_makeops
 	$(gen_verbose)LANG=C $(PERL) utils/beam_makeops \
 		-wordsize @EXTERNAL_WORD_SIZE@ \
+		-code-model @CODE_MODEL@ \
 		-outdir $(TTF_DIR) \
 		-DUSE_VM_PROBES=$(if $(USE_VM_PROBES),1,0) \
 		-DNO_FPE_SIGNALS=$(if $filter(unreliable,$(FPE)),1,0) \
@@ -643,6 +634,7 @@ GENERATE += $(TTF_DIR)/driver_tab.c
 PRELOAD_BEAM =		$(ERL_TOP)/erts/preloaded/ebin/otp_ring0.beam \
 			$(ERL_TOP)/erts/preloaded/ebin/erts_code_purger.beam \
 			$(ERL_TOP)/erts/preloaded/ebin/init.beam \
+			$(ERL_TOP)/erts/preloaded/ebin/prim_buffer.beam \
 			$(ERL_TOP)/erts/preloaded/ebin/prim_eval.beam \
 			$(ERL_TOP)/erts/preloaded/ebin/prim_inet.beam \
 			$(ERL_TOP)/erts/preloaded/ebin/prim_file.beam \
@@ -751,6 +743,25 @@ $(OBJDIR)/%_pu.gcda: $(OBJDIR)/PROFILE
 $(OBJDIR)/default.profdata: $(OBJDIR)/PROFILE
 	$(V_LLVM_PROFDATA) merge -output $@ $(OBJDIR)/*.profraw
 
+ifeq ($(ERTS_BUILD_FALLBACK_POLL),yes)
+# Have to treat erl_poll differently as the same .c file is used
+# twice for kernel poll builds.
+$(OBJDIR)/erl_poll.o: sys/common/erl_poll.c
+	$(V_CC) -DERTS_KERNEL_POLL_VERSION $(subst -O2, $(GEN_OPT_FLGS), $(CFLAGS)) $(INCLUDES) -c $< -o $@
+
+# Do a copy in order to make debuggers less confused
+$(TTF_DIR)/erl_poll.flbk.c: sys/common/erl_poll.c
+	$(V_at) cp $< $@
+	@touch $@
+
+$(OBJDIR)/erl_poll.flbk.o: $(TTF_DIR)/erl_poll.flbk.c
+	$(V_CC) -DERTS_NO_KERNEL_POLL_VERSION $(subst -O2, $(GEN_OPT_FLGS), $(CFLAGS)) $(INCLUDES) -c $< -o $@
+endif
+
+
+# ----------------------------------------------------------------------
+# General targets
+#
 $(OBJDIR)/%.o: beam/%.c
 	$(V_CC) $(subst -O2, $(GEN_OPT_FLGS), $(CFLAGS)) $(INCLUDES) -c $< -o $@
 
@@ -775,6 +786,9 @@ $(OBJDIR)/%.o: drivers/$(ERLANG_OSTYPE)/%.c
 $(OBJDIR)/%.o: nifs/common/%.c
 	$(V_CC) $(CFLAGS) -DLIBSCTP=$(LIBSCTP) $(INCLUDES) -Inifs/common -Inifs/$(ERLANG_OSTYPE) -c $< -o $@
 
+$(OBJDIR)/%.o: nifs/$(ERLANG_OSTYPE)/%.c
+	$(V_CC) $(CFLAGS) $(INCLUDES) -Inifs/common -Inifs/$(ERLANG_OSTYPE) -I../etc/$(ERLANG_OSTYPE) -c $< -o $@
+
 # ----------------------------------------------------------------------
 # Specials
 #
@@ -784,12 +798,6 @@ $(BINDIR)/$(CS_EXECUTABLE): $(TTF_DIR)/GENERATED $(PRELOAD_SRC) $(CS_OBJ) $(ERTS
 	$(ld_verbose)$(CS_PURIFY) $(LD) $(CS_LDFLAGS) -o $(BINDIR)/$(CS_EXECUTABLE) \
                $(CS_CFLAGS) $(COMMON_INCLUDES) $(CS_OBJ) $(CS_LIBS)
 
-$(OBJDIR)/%.kp.o: sys/common/%.c
-	$(V_CC) -DERTS_KERNEL_POLL_VERSION $(subst -O2, $(GEN_OPT_FLGS), $(CFLAGS)) $(INCLUDES) -c $< -o $@
-
-$(OBJDIR)/%.nkp.o: sys/common/%.c
-	$(V_CC) -DERTS_NO_KERNEL_POLL_VERSION $(subst -O2, $(GEN_OPT_FLGS), $(CFLAGS)) $(INCLUDES) -c $< -o $@
-
 ifeq ($(GCC),yes)
 
 $(OBJDIR)/erl_goodfit_alloc.o: beam/erl_goodfit_alloc.c
@@ -811,14 +819,7 @@ $(ERL_TOP)/lib/%.beam:
 
 INIT_OBJS = $(OBJDIR)/erl_main.o	$(PRELOAD_OBJ)
 
-# -fprofile-correction is needed in order to use PGO on erl_process
-# as multiple threads execute in that file.
-ifeq ($(PROFILE_CORRECTION),)
-PROFILE_OBJS = $(OBJDIR)/beam_emu.o
-RUN_OBJS = $(OBJDIR)/erl_process.o
-else
 PROFILE_OBJS = $(OBJDIR)/beam_emu.o	$(OBJDIR)/erl_process.o
-endif
 
 EMU_OBJS = \
 	$(OBJDIR)/beam_opcodes.o \
@@ -876,17 +877,17 @@ RUN_OBJS += \
 LTTNG_OBJS = $(OBJDIR)/erlang_lttng.o
 NIF_OBJS = \
 	   $(OBJDIR)/erl_tracer_nif.o \
+	   $(OBJDIR)/prim_buffer_nif.o \
+	   $(OBJDIR)/prim_file_nif.o \
 	   $(OBJDIR)/zlib_nif.o
 
 ifeq ($(TARGET),win32)
 DRV_OBJS = \
 	$(OBJDIR)/registry_drv.o \
-	$(OBJDIR)/efile_drv.o \
 	$(OBJDIR)/inet_drv.o \
 	$(OBJDIR)/ram_file_drv.o \
 	$(OBJDIR)/ttsl_drv.o
 OS_OBJS = \
-	$(OBJDIR)/win_efile.o \
 	$(OBJDIR)/win_con.o \
 	$(OBJDIR)/dll_sys.o \
 	$(OBJDIR)/driver_tab.o \
@@ -895,7 +896,8 @@ OS_OBJS = \
 	$(OBJDIR)/sys_time.o \
 	$(OBJDIR)/sys_interrupt.o \
 	$(OBJDIR)/sys_env.o \
-	$(OBJDIR)/dosmap.o
+	$(OBJDIR)/dosmap.o \
+	$(OBJDIR)/win_prim_file.o
 
 else
 OS_OBJS = \
@@ -903,14 +905,13 @@ OS_OBJS = \
 	$(OBJDIR)/sys_drivers.o \
 	$(OBJDIR)/sys_uds.o \
 	$(OBJDIR)/driver_tab.o \
-	$(OBJDIR)/unix_efile.o \
+	$(OBJDIR)/elib_memmove.o \
 	$(OBJDIR)/gzio.o \
-	$(OBJDIR)/elib_memmove.o
+	$(OBJDIR)/unix_prim_file.o
 
 	OS_OBJS += $(OBJDIR)/sys_float.o \
                    $(OBJDIR)/sys_time.o
 DRV_OBJS = \
-	$(OBJDIR)/efile_drv.o \
 	$(OBJDIR)/inet_drv.o \
 	$(OBJDIR)/ram_file_drv.o \
 	$(OBJDIR)/ttsl_drv.o
@@ -940,14 +941,8 @@ $(STATIC_NIF_LIBS) $(STATIC_DRIVER_LIBS):
 	echo "=== Leaving lib after making static libs"
 endif
 
-ifeq ($(ERTS_BUILD_FALLBACK_POLL),yes)
-OS_OBJS += 	$(OBJDIR)/erl_poll.kp.o \
-		$(OBJDIR)/erl_poll.nkp.o
-else
-OS_OBJS +=	$(OBJDIR)/erl_poll.o
-endif
-
-OS_OBJS +=	$(OBJDIR)/erl_check_io.o \
+OS_OBJS +=	$(OBJDIR)/erl_poll.o \
+		$(OBJDIR)/erl_check_io.o \
 		$(OBJDIR)/erl_mseg.o \
 		$(OBJDIR)/erl_mmap.o \
 		$(OBJDIR)/erl_$(ERLANG_OSTYPE)_sys_ddll.o \
@@ -955,6 +950,10 @@ OS_OBJS +=	$(OBJDIR)/erl_check_io.o \
 		$(OBJDIR)/erl_sys_common_misc.o \
 		$(OBJDIR)/erl_os_monotonic_time_extender.o
 
+ifeq ($(ERTS_BUILD_FALLBACK_POLL),yes)
+OS_OBJS += 	$(OBJDIR)/erl_poll.flbk.o
+endif
+
 HIPE_ARCH64_OBJS=$(OBJDIR)/hipe_bif64.o
 
 HIPE_x86_OS_OBJS=$(HIPE_x86_$(OPSYS)_OBJS)
@@ -1111,8 +1110,7 @@ SED_REPL_O=s|^\([^:]*:\)|$$(OBJDIR)/\1|g
 SED_REPL_O_ZLIB=s|^\([^:]*:\)|$$(ZLIB_OBJDIR)/\1|g
 SED_REPL_TTF_DIR=s|$(TTF_DIR)/|$$(TTF_DIR)/|g
 SED_REPL_ERL_TOP=s|\([ 	]\)$(ERL_TOP)/|\1$$(ERL_TOP)/|g;s|^$(ERL_TOP)/|$$(ERL_TOP)/|g
-SED_REPL_POLL=s|$$(OBJDIR)/erl_poll.o|$$(OBJDIR)/erl_poll.kp.o $$(OBJDIR)/erl_poll.nkp.o|g
-SED_REPL_CHK_IO=s|$$(OBJDIR)/erl_check_io.o|$$(OBJDIR)/erl_check_io.kp.o $$(OBJDIR)/erl_check_io.nkp.o|g
+SED_REPL_POLL=s|$$(OBJDIR)/erl_poll.o|$$(OBJDIR)/erl_poll.o $$(OBJDIR)/erl_poll.flbk.o|g
 SED_REPL_TTF_COMP_FLAGS=s|\([^/]\)erl_compile_flags\.h|\1$$(TTF_DIR)/erl_compile_flags\.h|g
 
 ifeq ($(TARGET),win32)
@@ -1123,7 +1121,7 @@ SED_PREFIX=
 endif
 
 ifeq ($(ERTS_BUILD_FALLBACK_POLL),yes)
-SED_SUFFIX=;$(SED_REPL_POLL);$(SED_REPL_CHK_IO)
+SED_SUFFIX=;$(SED_REPL_POLL)
 else
 SED_SUFFIX=
 endif
@@ -1141,6 +1139,7 @@ BEAM_SRC=$(wildcard beam/*.c)
 DRV_COMMON_SRC=$(wildcard drivers/common/*.c)
 DRV_OSTYPE_SRC=$(wildcard drivers/$(ERLANG_OSTYPE)/*.c)
 NIF_COMMON_SRC=$(wildcard nifs/common/*.c)
+NIF_OSTYPE_SRC=$(wildcard nifs/$(ERLANG_OSTYPE)/*.c)
 ALL_SYS_SRC=$(wildcard sys/$(ERLANG_OSTYPE)/*.c) $(wildcard sys/common/*.c)
 # We use $(shell ls) here instead of wildcard as $(wildcard ) resolved at
 # loadtime of the makefile and at that time these files are not generated yet.
@@ -1153,7 +1152,10 @@ ifeq ($(TARGET),win32)
 
 #DEP_CC=$(EMU_CC)
 DEP_CC=$(CC)
-DEP_FLAGS=-MM  $(subst -O2,,$(CFLAGS)) $(INCLUDES) -I../etc/win32 -Idrivers/common -Idrivers/$(ERLANG_OSTYPE)
+DEP_FLAGS=-MM  $(subst -O2,,$(CFLAGS)) $(INCLUDES) -I../etc/win32 \
+	-Idrivers/common -Idrivers/$(ERLANG_OSTYPE) \
+	-Inifs/common -Inifs/$(ERLANG_OSTYPE)
+
 # ifeq (@MIXED_CYGWIN_VC@,yes)
 # VC++ used for compiling. If __GNUC__ is defined we will include
 # other headers then when compiling which will result in faulty
@@ -1173,7 +1175,9 @@ MG_FLAG=-MG
 endif
 
 DEP_CC=$(CC)
-DEP_FLAGS=-MM $(MG_FLAG) $(CFLAGS) $(INCLUDES) -Inifs/common -Idrivers/common -Idrivers/$(ERLANG_OSTYPE)
+DEP_FLAGS=-MM $(MG_FLAG) $(CFLAGS) $(INCLUDES) \
+	-Idrivers/common -Idrivers/$(ERLANG_OSTYPE) \
+	-Inifs/common -Inifs/$(ERLANG_OSTYPE)
 SYS_SRC=$(ALL_SYS_SRC)
 endif
 
@@ -1204,6 +1208,8 @@ $(TTF_DIR)/depend.mk: $(TTF_DIR)/GENERATED $(PRELOAD_SRC)
 		| $(SED_DEPEND) >> $(TTF_DIR)/depend.mk
 	$(V_at)$(DEP_CC) $(DEP_FLAGS) $(NIF_COMMON_SRC) \
 		| $(SED_DEPEND) >> $(TTF_DIR)/depend.mk
+	$(V_at)$(DEP_CC) $(DEP_FLAGS) -I../etc/$(ERLANG_OSTYPE) $(NIF_OSTYPE_SRC) \
+		| $(SED_DEPEND) >> $(TTF_DIR)/depend.mk
 	$(V_at)$(DEP_CC) $(DEP_FLAGS) $(SYS_SRC) \
 		| $(SED_DEPEND) >> $(TTF_DIR)/depend.mk
 	$(V_at)$(DEP_CC) $(DEP_FLAGS) $(TARGET_SRC) \
diff --git a/erts/emulator/beam/atom.h b/erts/emulator/beam/atom.h
index be998a46bd..385120a8d9 100644
--- a/erts/emulator/beam/atom.h
+++ b/erts/emulator/beam/atom.h
@@ -36,7 +36,7 @@
 /* Internal atom cache needs MAX_ATOM_TABLE_SIZE to be less than an
    unsigned 32 bit integer. See external.c(erts_encode_ext_dist_header_setup)
    for more details. */
-#define MAX_ATOM_TABLE_SIZE ((MAX_ATOM_INDEX + 1 < (UWORD_CONSTANT(1) << 32)) ? MAX_ATOM_INDEX + 1 : (UWORD_CONSTANT(1) << 32))
+#define MAX_ATOM_TABLE_SIZE ((MAX_ATOM_INDEX + 1 < (UWORD_CONSTANT(1) << 32)) ? MAX_ATOM_INDEX + 1 : ((UWORD_CONSTANT(1) << 31) - 1)) /* Here we use maximum signed interger value to avoid integer overflow */
 #else
 #define MAX_ATOM_TABLE_SIZE (MAX_ATOM_INDEX + 1)
 #endif
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names
index fc55b687d4..cef633bd93 100644
--- a/erts/emulator/beam/atom.names
+++ b/erts/emulator/beam/atom.names
@@ -108,6 +108,7 @@ atom asynchronous
 atom atom
 atom atom_used
 atom attributes
+atom auto_connect
 atom await_microstate_accounting_modifications
 atom await_port_send_result
 atom await_proc_exit
@@ -198,9 +199,7 @@ atom debug_flags
 atom decimals
 atom default
 atom delay_trap
-atom dexit
 atom depth
-atom dgroup_leader
 atom dictionary
 atom dirty_bif_exception
 atom dirty_bif_result
@@ -221,7 +220,6 @@ atom dist_ctrl_put_data
 atom dist_data
 atom Div='/'
 atom div
-atom dlink
 atom dmonitor_node
 atom dmonitor_p
 atom DollarDollar='$$'
@@ -230,9 +228,7 @@ atom dollar_endonly
 atom dotall
 atom driver
 atom driver_options
-atom dsend
 atom dsend_continue_trap
-atom dunlink
 atom duplicate_bag
 atom duplicated
 atom dupnames
@@ -352,6 +348,7 @@ atom instruction_counts
 atom invalid
 atom is_constant
 atom is_seq_trace
+atom iterator
 atom io
 atom keypos
 atom kill
diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index 00822d1415..87367b44ab 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -768,36 +768,45 @@ BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
     ErtsCodeIndex code_ix;
     Module* modp;
 
+    if (BIF_ARG_2 != am_false && BIF_ARG_2 != am_true) {
+	BIF_ERROR(BIF_P, BADARG);
+    }
+
     if (!erts_try_seize_code_write_permission(BIF_P)) {
 	ERTS_BIF_YIELD2(bif_export[BIF_finish_after_on_load_2],
 			BIF_P, BIF_ARG_1, BIF_ARG_2);
     }
 
-    /* ToDo: Use code_ix staging instead of thread blocking */
-
-    erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
-    erts_thr_progress_block();
-
     code_ix = erts_active_code_ix();
     modp = erts_get_module(BIF_ARG_1, code_ix);
 
-    if (!modp || !modp->on_load || !modp->on_load->code_hdr) {
-    error:
-	erts_thr_progress_unblock();
-        erts_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
+    if (!modp || !modp->on_load || !modp->on_load->code_hdr
+	|| !modp->on_load->code_hdr->on_load_function_ptr) {
+
 	erts_release_code_write_permission();
 	BIF_ERROR(BIF_P, BADARG);
     }
-    if (modp->on_load->code_hdr->on_load_function_ptr == NULL) {
-	goto error;
-    }
-    if (BIF_ARG_2 != am_false && BIF_ARG_2 != am_true) {
-	goto error;
-    }
 
     if (BIF_ARG_2 == am_true) {
+	struct m mods[1];
+	int is_blocking = 0;
 	int i, num_exps;
 
+	erts_start_staging_code_ix(0);
+	code_ix = erts_staging_code_ix();
+	modp = erts_get_module(BIF_ARG_1, code_ix);
+
+	ASSERT(modp && modp->on_load && modp->on_load->code_hdr
+	       && modp->on_load->code_hdr->on_load_function_ptr);
+
+        if (erts_is_default_trace_enabled()
+	    || IF_HIPE(hipe_need_blocking(modp))) {
+
+            erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
+            erts_thr_progress_block();
+            is_blocking = 1;
+	}
+
 	/*
 	 * Make the code with the on_load function current.
 	 */
@@ -831,11 +840,13 @@ BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
 	    }
 	}
 	modp->curr.code_hdr->on_load_function_ptr = NULL;
-	set_default_trace_pattern(BIF_ARG_1);
-      #ifdef HIPE
-        hipe_redirect_to_module(modp);
-      #endif
-    } else if (BIF_ARG_2 == am_false) {
+
+	mods[0].modp = modp;
+	mods[0].module = BIF_ARG_1;
+        mods[0].exception = THE_NON_VALUE;
+	return staging_epilogue(BIF_P, 1, am_true, is_blocking, mods, 1, 0);
+    }
+    else if (BIF_ARG_2 == am_false) {
 	int i, num_exps;
 
 	/*
@@ -855,8 +866,6 @@ BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
 	    ep->beam[1] = 0;
 	}
     }
-    erts_thr_progress_unblock();
-    erts_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
     erts_release_code_write_permission();
     BIF_RET(am_true);
 }
diff --git a/erts/emulator/beam/beam_bp.c b/erts/emulator/beam/beam_bp.c
index c81380c14d..0832b3f374 100644
--- a/erts/emulator/beam/beam_bp.c
+++ b/erts/emulator/beam/beam_bp.c
@@ -419,9 +419,11 @@ erts_install_breakpoints(BpFunctions* f)
 
     for (i = 0; i < n; i++) {
 	ErtsCodeInfo* ci = f->matching[i].ci;
-        BeamInstr *pc = erts_codeinfo_to_code(ci);
 	GenericBp* g = ci->u.gen_bp;
-	if (*pc != br && g) {
+        BeamInstr volatile *pc = erts_codeinfo_to_code(ci);
+        BeamInstr instr = *pc;
+
+	if (!BeamIsOpCode(instr, op_i_generic_breakpoint) && g) {
 	    Module* modp = f->matching[i].mod;
 
 	    /*
@@ -435,11 +437,16 @@ erts_install_breakpoints(BpFunctions* f)
 	    /*
 	     * The following write is not protected by any lock. We
 	     * assume that the hardware guarantees that a write of an
-	     * aligned word-size (or half-word) writes is atomic
-	     * (i.e. that other processes executing this code will not
-	     * see a half pointer).
+	     * aligned word-size writes is atomic (i.e. that other
+	     * processes executing this code will not see a half
+	     * pointer).
+             *
+             * The contents of *pc is marked 'volatile' to ensure that
+             * the compiler will do a single full-word write, and not
+             * try any fancy optimizations to write a half word.
 	     */
-	    *pc = br;
+            instr = BeamSetCodeAddr(instr, br);
+            *pc = instr;
 	    modp->curr.num_breakpoints++;
 	}
     }
@@ -634,6 +641,49 @@ erts_clear_export_break(Module* modp, ErtsCodeInfo *ci)
     ASSERT(ci->u.gen_bp == NULL);
 }
 
+/*
+ * If c_p->cp is a trace return instruction, we set cp
+ * to be the place where we again start to execute code.
+ *
+ * cp is used by match spec {caller} to get the calling
+ * function, and if we don't do this fixup it will be
+ * 'undefined'. This has the odd side effect of {caller}
+ * not really being which function is the caller, but
+ * rather which function we are about to return to.
+ */
+static void fixup_cp_before_trace(Process *c_p, int *return_to_trace)
+{
+    Eterm *cpp, *E = c_p->stop;
+    BeamInstr w = *c_p->cp;
+    if (BeamIsOpCode(w, op_return_trace)) {
+        cpp = &E[2];
+    } else if (BeamIsOpCode(w, op_i_return_to_trace)) {
+        *return_to_trace = 1;
+        cpp = &E[0];
+    } else if (BeamIsOpCode(w, op_i_return_time_trace)) {
+        cpp = &E[0];
+    } else {
+        cpp = NULL;
+    }
+    if (cpp) {
+        for (;;) {
+            BeamInstr w = *cp_val(*cpp);
+            if (BeamIsOpCode(w, op_return_trace)) {
+                cpp += 3;
+            } else if (BeamIsOpCode(w, op_i_return_to_trace)) {
+                *return_to_trace = 1;
+                cpp += 1;
+            } else if (BeamIsOpCode(w, op_i_return_time_trace)) {
+                cpp += 2;
+            } else {
+                break;
+            }
+        }
+        c_p->cp = (BeamInstr *) cp_val(*cpp);
+        ASSERT(is_CP(*cpp));
+    }
+}
+
 BeamInstr
 erts_generic_breakpoint(Process* c_p, ErtsCodeInfo *info, Eterm* reg)
 {
@@ -744,6 +794,7 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
     GenericBp* g;
     GenericBpData* bp = NULL;
     Uint bp_flags = 0;
+    int return_to_trace = 0;
 
     ERTS_CHK_HAVE_ONLY_MAIN_PROC_LOCK(p);
 
@@ -759,6 +810,8 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
      */
     if (!applying) {
 	p->cp = I;
+    } else {
+        fixup_cp_before_trace(p, &return_to_trace);
     }
     if (bp_flags & (ERTS_BPF_LOCAL_TRACE|ERTS_BPF_GLOBAL_TRACE) &&
 	IS_TRACED_FL(p, F_TRACE_CALLS)) {
@@ -937,49 +990,20 @@ static ErtsTracer
 do_call_trace(Process* c_p, ErtsCodeInfo* info, Eterm* reg,
 	      int local, Binary* ms, ErtsTracer tracer)
 {
-    Eterm* cpp;
     int return_to_trace = 0;
-    BeamInstr w;
     BeamInstr *cp_save = c_p->cp;
     Uint32 flags;
     Uint need = 0;
     Eterm* E = c_p->stop;
 
-    w = *c_p->cp;
-    if (BeamIsOpCode(w, op_return_trace)) {
-	cpp = &E[2];
-    } else if (BeamIsOpCode(w, op_i_return_to_trace)) {
-	return_to_trace = 1;
-	cpp = &E[0];
-    } else if (BeamIsOpCode(w, op_i_return_time_trace)) {
-	cpp = &E[0];
-    } else {
-	cpp = NULL;
-    }
-    if (cpp) {
-	for (;;) {
-	    BeamInstr w = *cp_val(*cpp);
-	    if (BeamIsOpCode(w, op_return_trace)) {
-		cpp += 3;
-	    } else if (BeamIsOpCode(w, op_i_return_to_trace)) {
-		return_to_trace = 1;
-		cpp += 1;
-            } else if (BeamIsOpCode(w, op_i_return_time_trace)) {
-		cpp += 2;
-	    } else {
-		break;
-	    }
-	}
-	cp_save = c_p->cp;
-	c_p->cp = (BeamInstr *) cp_val(*cpp);
-	ASSERT(is_CP(*cpp));
-    }
+    fixup_cp_before_trace(c_p, &return_to_trace);
+
     ERTS_UNREQ_PROC_MAIN_LOCK(c_p);
     flags = erts_call_trace(c_p, info, ms, reg, local, &tracer);
     ERTS_REQ_PROC_MAIN_LOCK(c_p);
-    if (cpp) {
-	c_p->cp = cp_save;
-    }
+
+    /* restore cp after potential fixup */
+    c_p->cp = cp_save;
 
     ASSERT(!ERTS_PROC_IS_EXITING(c_p));
     if ((flags & MATCH_SET_RETURN_TO_TRACE) && !return_to_trace) {
diff --git a/erts/emulator/beam/beam_debug.c b/erts/emulator/beam/beam_debug.c
index 0f332da63f..509aa2a84f 100644
--- a/erts/emulator/beam/beam_debug.c
+++ b/erts/emulator/beam/beam_debug.c
@@ -201,7 +201,7 @@ void debug_dump_code(BeamInstr *I, int num)
 	for (i = 0; i < NUM_SPECIFIC_OPS; i++) {
 	    if (BeamIsOpCode(instr, i) && opc[i].name[0] != '\0') {
 		code_ptr += print_op(ERTS_PRINT_DSBUF, (void *) dsbufp,
-				     i, opc[i].sz-1, code_ptr+1) + 1;
+				     i, opc[i].sz-1, code_ptr) + 1;
 		break;
 	    }
 	}
@@ -321,7 +321,7 @@ erts_debug_disassemble_1(BIF_ALIST_1)
     for (i = 0; i < NUM_SPECIFIC_OPS; i++) {
 	if (BeamIsOpCode(instr, i) && opc[i].name[0] != '\0') {
 	    code_ptr += print_op(ERTS_PRINT_DSBUF, (void *) dsbufp,
-				 i, opc[i].sz-1, code_ptr+1) + 1;
+				 i, opc[i].sz-1, code_ptr) + 1;
 	    break;
 	}
     }
@@ -405,8 +405,14 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
 	 * Avoid copying because instructions containing bignum operands
 	 * are bigger than actually declared.
 	 */
-	ap = (BeamInstr *) addr;
+        addr++;
+        ap = addr;
     } else {
+#if defined(ARCH_64) && defined(CODE_MODEL_SMALL)
+        BeamInstr instr_word = addr[0];
+#endif
+        addr++;
+
 	/*
 	 * Copy all arguments to a local buffer for the unpacking.
 	 */
@@ -431,23 +437,22 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
 	    case 'q':
 		*ap++ = *--sp;
 		break;
-	    case 'i':		/* Initialize packing accumulator. */
-		*ap++ = packed;
-		break;
-	    case 's':
-		*ap++ = packed & 0x3ff;
-		packed >>= 10;
+#ifdef ARCH_64
+	    case '1':		/* Tightest shift */
+		*ap++ = (packed & BEAM_TIGHTEST_MASK) << 3;
+		packed >>= BEAM_TIGHTEST_SHIFT;
 		break;
-	    case '0':		/* Tight shift */
+#endif
+	    case '2':		/* Tight shift */
 		*ap++ = packed & BEAM_TIGHT_MASK;
 		packed >>= BEAM_TIGHT_SHIFT;
 		break;
-	    case '6':		/* Shift 16 steps */
+	    case '3':		/* Loose shift */
 		*ap++ = packed & BEAM_LOOSE_MASK;
 		packed >>= BEAM_LOOSE_SHIFT;
 		break;
 #ifdef ARCH_64
-	    case 'w':		/* Shift 32 steps */
+	    case '4':		/* Shift 32 steps */
 		*ap++ = packed & BEAM_WIDE_MASK;
 		packed >>= BEAM_WIDE_SHIFT;
 		break;
@@ -458,8 +463,18 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
 	    case 'P':
 		packed = *--sp;
 		break;
+#if defined(ARCH_64) && defined(CODE_MODEL_SMALL)
+            case '#':       /* -1 */
+            case '$':       /* -2 */
+            case '%':       /* -3 */
+            case '&':       /* -4 */
+            case '\'':      /* -5 */
+            case '(':       /* -6 */
+                packed = (packed << BEAM_WIDE_SHIFT) | BeamExtraData(instr_word);
+		break;
+#endif
 	    default:
-		ASSERT(0);
+                erts_exit(ERTS_ERROR_EXIT, "beam_debug: invalid packing op: %c\n", *prog);
 	    }
 	}
 	ap = args;
@@ -744,7 +759,7 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
 		    erts_print(to, to_arg, " x(%d)", loader_x_reg_index(ap[0]));
 		    break;
 		case LOADER_Y_REG:
-		    erts_print(to, to_arg, " x(%d)", loader_y_reg_index(ap[0]));
+		    erts_print(to, to_arg, " y(%d)", loader_y_reg_index(ap[0]) - CP_SIZE);
 		    break;
 		default:
 		    erts_print(to, to_arg, " %T", (Eterm) ap[0]);
@@ -765,7 +780,7 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
                     erts_print(to, to_arg, " x(%d)", loader_x_reg_index(ap[0]));
                     break;
                 case LOADER_Y_REG:
-		    erts_print(to, to_arg, " x(%d)", loader_y_reg_index(ap[0]));
+		    erts_print(to, to_arg, " y(%d)", loader_y_reg_index(ap[0]) - CP_SIZE);
 		    break;
                 default:
 		    erts_print(to, to_arg, " %T", (Eterm) ap[0]);
@@ -788,7 +803,7 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
 			erts_print(to, to_arg, " x(%d)", loader_x_reg_index(ap[0]));
 			break;
 		    case LOADER_Y_REG:
-			erts_print(to, to_arg, " y(%d)", loader_y_reg_index(ap[0]));
+			erts_print(to, to_arg, " y(%d)", loader_y_reg_index(ap[0]) - CP_SIZE);
 			break;
 		    default:
 			erts_print(to, to_arg, " %T", (Eterm) ap[0]);
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index 9a77c63390..ef9abcde08 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -50,14 +50,16 @@
 #if defined(NO_JUMP_TABLE)
 #  define OpCase(OpCode)    case op_##OpCode
 #  define CountCase(OpCode) case op_count_##OpCode
-#  define IsOpCode(InstrWord, OpCode)  ((InstrWord) == (BeamInstr)op_##OpCode)
-#  define Goto(Rel) {Go = (Rel); goto emulator_loop;}
+#  define IsOpCode(InstrWord, OpCode)  (BeamCodeAddr(InstrWord) == (BeamInstr)op_##OpCode)
+#  define Goto(Rel)         {Go = BeamCodeAddr(Rel); goto emulator_loop;}
+#  define GotoPF(Rel)       Goto(Rel)
 #else
 #  define OpCase(OpCode)    lb_##OpCode
 #  define CountCase(OpCode) lb_count_##OpCode
-#  define IsOpCode(InstrWord, OpCode)  ((InstrWord) == (BeamInstr)&&lb_##OpCode)
-#  define Goto(Rel) goto *((void *)Rel)
-#  define LabelAddr(Label) &&Label
+#  define IsOpCode(InstrWord, OpCode)  (BeamCodeAddr(InstrWord) == (BeamInstr)&&lb_##OpCode)
+#  define Goto(Rel)         goto *((void *)BeamCodeAddr(Rel))
+#  define GotoPF(Rel)       goto *((void *)Rel)
+#  define LabelAddr(Label)  &&Label
 #endif
 
 #ifdef ERTS_ENABLE_LOCK_CHECK
@@ -131,11 +133,11 @@ do {                                     \
 
 /* We don't check the range if an ordinary switch is used */
 #ifdef NO_JUMP_TABLE
-#define VALID_INSTR(IP) ((UWord)(IP) < (NUMBER_OF_OPCODES*2+10))
+#  define VALID_INSTR(IP) (BeamCodeAddr(IP) < (NUMBER_OF_OPCODES*2+10))
 #else
-#define VALID_INSTR(IP) \
-   ((SWord)LabelAddr(emulator_loop) <= (SWord)(IP) && \
-    (SWord)(IP) < (SWord)LabelAddr(end_emulator_loop))
+#  define VALID_INSTR(IP) \
+    ((BeamInstr)LabelAddr(emulator_loop) <= BeamCodeAddr(IP) && \
+     BeamCodeAddr(IP) < (BeamInstr)LabelAddr(end_emulator_loop))
 #endif /* NO_JUMP_TABLE */
 
 #define SET_CP(p, ip)           \
@@ -234,15 +236,18 @@ void** beam_ops;
 #define fb(N) ((Sint)(Sint32)(N))
 #define jb(N) ((Sint)(Sint32)(N))
 #define tb(N) (N)
-#define xb(N) (*(Eterm *) (((unsigned char *)reg) + (N)))
-#define yb(N) (*(Eterm *) (((unsigned char *)E) + (N)))
+#define xb(N) (*ADD_BYTE_OFFSET(reg, N))
+#define yb(N) (*ADD_BYTE_OFFSET(E, N))
 #define Sb(N) (*REG_TARGET_PTR(N))
 #define lb(N) (*(double *) (((unsigned char *)&(freg[0].fd)) + (N)))
 #define Qb(N) (N)
 #define Ib(N) (N)
+
 #define x(N) reg[N]
 #define y(N) E[N]
 #define r(N) x(N)
+#define Q(N) (N*sizeof(Eterm *))
+#define l(N) (freg[N].fd)
 
 /*
  * Check that we haven't used the reductions and jump to function pointed to by
@@ -395,12 +400,13 @@ static BeamInstr* apply_fun(Process* p, Eterm fun,
 			    Eterm args, Eterm* reg) NOINLINE;
 static Eterm new_fun(Process* p, Eterm* reg,
 		     ErlFunEntry* fe, int num_free) NOINLINE;
-static Eterm new_map(Process* p, Eterm* reg, Uint live, Uint n, BeamInstr* ptr) NOINLINE;
-static Eterm new_small_map_lit(Process* p, Eterm* reg, Eterm keys_literal,
+static Eterm erts_gc_new_map(Process* p, Eterm* reg, Uint live,
+                             Uint n, BeamInstr* ptr) NOINLINE;
+static Eterm erts_gc_new_small_map_lit(Process* p, Eterm* reg, Eterm keys_literal,
                                Uint live, BeamInstr* ptr) NOINLINE;
-static Eterm update_map_assoc(Process* p, Eterm* reg, Uint live,
+static Eterm erts_gc_update_map_assoc(Process* p, Eterm* reg, Uint live,
                               Uint n, BeamInstr* new_p) NOINLINE;
-static Eterm update_map_exact(Process* p, Eterm* reg, Uint live,
+static Eterm erts_gc_update_map_exact(Process* p, Eterm* reg, Uint live,
                               Uint n, Eterm* new_p) NOINLINE;
 static Eterm get_map_element(Eterm map, Eterm key);
 static Eterm get_map_element_hash(Eterm map, Eterm key, Uint32 hx);
@@ -1006,6 +1012,18 @@ init_emulator_finish(void)
      int i;
      Export* ep;
 
+#if defined(ARCH_64) && defined(CODE_MODEL_SMALL)
+     for (i = 0; i < NUMBER_OF_OPCODES; i++) {
+         BeamInstr instr = BeamOpCodeAddr(i);
+         if (instr >= (1ull << 32)) {
+             erts_exit(ERTS_ERROR_EXIT,
+                       "This run-time was supposed be compiled with all code below 2Gb,\n"
+                       "but the instruction '%s' is located at %016lx.\n",
+                       opc[i].name, instr);
+         }
+     }
+#endif
+
      beam_apply[0]             = BeamOpCodeAddr(op_i_apply);
      beam_apply[1]             = BeamOpCodeAddr(op_normal_exit);
      beam_exit[0]              = BeamOpCodeAddr(op_error_action_code);
@@ -1436,6 +1454,7 @@ handle_error(Process* c_p, BeamInstr* pc, Eterm* reg, ErtsCodeMFA *bif_mfa)
 	reg[3] = c_p->ftrace;
         if ((new_pc = next_catch(c_p, reg))) {
 	    c_p->cp = 0;	/* To avoid keeping stale references. */
+            c_p->msg.saved_last = 0;  /* No longer safe to use this position */
 	    return new_pc;
 	}
 	if (c_p->catches > 0) erts_exit(ERTS_ERROR_EXIT, "Catch not found");
@@ -2738,7 +2757,7 @@ do {						\
 
 
 static Eterm
-new_map(Process* p, Eterm* reg, Uint live, Uint n, BeamInstr* ptr)
+erts_gc_new_map(Process* p, Eterm* reg, Uint live, Uint n, BeamInstr* ptr)
 {
     Uint i;
     Uint need = n + 1 /* hdr */ + 1 /*size*/ + 1 /* ptr */ + 1 /* arity */;
@@ -2795,7 +2814,8 @@ new_map(Process* p, Eterm* reg, Uint live, Uint n, BeamInstr* ptr)
 }
 
 static Eterm
-new_small_map_lit(Process* p, Eterm* reg, Eterm keys_literal, Uint live, BeamInstr* ptr)
+erts_gc_new_small_map_lit(Process* p, Eterm* reg, Eterm keys_literal,
+                          Uint live, BeamInstr* ptr)
 {
     Eterm* keys = tuple_val(keys_literal);
     Uint n = arityval(*keys);
@@ -2829,7 +2849,8 @@ new_small_map_lit(Process* p, Eterm* reg, Eterm keys_literal, Uint live, BeamIns
 }
 
 static Eterm
-update_map_assoc(Process* p, Eterm* reg, Uint live, Uint n, BeamInstr* new_p)
+erts_gc_update_map_assoc(Process* p, Eterm* reg, Uint live,
+                         Uint n, BeamInstr* new_p)
 {
     Uint num_old;
     Uint num_updates;
@@ -2875,7 +2896,7 @@ update_map_assoc(Process* p, Eterm* reg, Uint live, Uint n, BeamInstr* new_p)
      */
 
     if (num_old == 0) {
-	return new_map(p, reg, live, n, new_p);
+	return erts_gc_new_map(p, reg, live, n, new_p);
     }
 
     /*
@@ -3031,7 +3052,7 @@ update_map_assoc(Process* p, Eterm* reg, Uint live, Uint n, BeamInstr* new_p)
  */
 
 static Eterm
-update_map_exact(Process* p, Eterm* reg, Uint live, Uint n, Eterm* new_p)
+erts_gc_update_map_exact(Process* p, Eterm* reg, Uint live, Uint n, Eterm* new_p)
 {
     Uint i;
     Uint num_old;
@@ -3182,13 +3203,16 @@ erts_is_builtin(Eterm Mod, Eterm Name, int arity)
     Export e;
     Export* ep;
 
-    if (Mod == am_erlang && Name == am_apply && arity == 3) {
-	/*
-	 * Special case. apply/3 is built-in (implemented in C),
-	 * but implemented in a different way than all other
-	 * BIFs.
-	 */
-	return 1;
+    if (Mod == am_erlang) {
+        /*
+         * Special case for built-in functions that are implemented
+         * as instructions as opposed to SNIFs.
+         */
+        if (Name == am_apply && (arity == 2 || arity == 3)) {
+            return 1;
+        } else if (Name == am_yield && arity == 0) {
+            return 1;
+        }
     }
 
     e.info.mfa.module = Mod;
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 9835b1c096..e43f7fda2c 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -806,11 +806,6 @@ erts_finish_loading(Binary* magic, Process* c_p,
     struct erl_module_instance* inst_p;
     Uint size;
 
-    /*
-     * No other process may run since we will update the export
-     * table which is not protected by any locks.
-     */
-
     ERTS_LC_ASSERT(erts_initialized == 0 || erts_has_code_write_permission() ||
 		       erts_thr_progress_is_blocking());
     /*
@@ -2389,8 +2384,18 @@ load_code(LoaderState* stp)
 		    code[ci++] = NIL;
 		    break;
 		case TAG_q:
-		    new_literal_patch(stp, ci);
-		    code[ci++] = tmp_op->a[arg].val;
+                    {
+                        BeamInstr val = tmp_op->a[arg].val;
+                        Eterm term = stp->literals[val].term;
+                        new_literal_patch(stp, ci);
+                        code[ci++] = val;
+                        switch (loader_tag(term)) {
+                        case LOADER_X_REG:
+                        case LOADER_Y_REG:
+                            LoadError1(stp, "the term '%T' would be confused "
+                                       "with a register", term);
+                        }
+                    }
 		    break;
 		default:
 		    LoadError1(stp, "bad tag %d for general source",
@@ -2578,23 +2583,31 @@ load_code(LoaderState* stp)
                         sp++;
                     }
                     break;
-		case 'i':	/* Initialize packing accumulator. */
-		    packed = code[--ci];
+#ifdef ARCH_64
+		case '1':	/* Tightest shift (always 10 bits) */
+                    ci--;
+                    ASSERT((code[ci] & ~0x1FF8ull) == 0); /* Fits in 10 bits */
+                    packed = (packed << BEAM_TIGHTEST_SHIFT);
+                    packed |= code[ci] >> 3;
+                    if (packed_label) {
+                        packed_label->packed++;
+                    }
 		    break;
-		case '0':	/* Tight shift */
+#endif
+		case '2':	/* Tight shift (10 or 16 bits) */
 		    packed = (packed << BEAM_TIGHT_SHIFT) | code[--ci];
                     if (packed_label) {
                         packed_label->packed++;
                     }
 		    break;
-		case '6':	/* Shift 16 steps */
+		case '3':	/* Loose shift (16 bits) */
 		    packed = (packed << BEAM_LOOSE_SHIFT) | code[--ci];
                     if (packed_label) {
                         packed_label->packed++;
                     }
 		    break;
 #ifdef ARCH_64
-		case 'w':	/* Shift 32 steps */
+		case '4':	/* Wide shift (32 bits) */
                     {
                         Uint w = code[--ci];
 
@@ -2646,8 +2659,31 @@ load_code(LoaderState* stp)
                     sp++;
 		    packed = 0;
 		    break;
+#if defined(ARCH_64) && defined(CODE_MODEL_SMALL)
+                case '#':       /* -1 */
+                case '$':       /* -2 */
+                case '%':       /* -3 */
+                case '&':       /* -4 */
+                case '\'':      /* -5 */
+                case '(':       /* -6 */
+                    /* Pack accumulator contents into instruction word. */
+                    {
+                        Sint pos = ci - (*prog - '#' + 1);
+                        /* Are the high 32 bits of the instruction word zero? */
+                        ASSERT((code[pos] & ~((1ull << BEAM_WIDE_SHIFT)-1)) == 0);
+                        code[pos] |= packed << BEAM_WIDE_SHIFT;
+                        if (packed_label) {
+                            ASSERT(packed_label->packed == 1);
+                            packed_label->pos = pos;
+                            packed_label->packed = 2;
+                            packed_label = 0;
+                        }
+                        packed >>= BEAM_WIDE_SHIFT;
+                    }
+		    break;
+#endif
 		default:
-		    ASSERT(0);
+                    erts_exit(ERTS_ERROR_EXIT, "beam_load: invalid packing op: %c\n", *prog);
 		}
 	    }
 	    ASSERT(sp == stack); /* Incorrect program? */
@@ -4996,7 +5032,7 @@ freeze_code(LoaderState* stp)
                  */
                 codev[pos] = (BeamInstr) (codev + value);
             } else {
-#ifdef DEBUG
+#if defined(DEBUG) && defined(BEAM_WIDE_MASK)
                 Uint w;
 #endif
                 Sint32 rel = lp->offset + value;
@@ -5992,13 +6028,36 @@ erts_release_literal_area(ErtsLiteralArea* literal_area)
 	return;
 
     oh = literal_area->off_heap;
-	
+
     while (oh) {
-	Binary* bptr;
-	ASSERT(thing_subtag(oh->thing_word) == REFC_BINARY_SUBTAG);
-	bptr = ((ProcBin*)oh)->val;
-        erts_bin_release(bptr);
-	oh = oh->next;
+        switch (thing_subtag(oh->thing_word)) {
+        case REFC_BINARY_SUBTAG:
+            {
+                Binary* bptr = ((ProcBin*)oh)->val;
+                erts_bin_release(bptr);
+                break;
+            }
+        case FUN_SUBTAG:
+            {
+                ErlFunEntry* fe = ((ErlFunThing*)oh)->fe;
+                if (erts_refc_dectest(&fe->refc, 0) == 0) {
+                    erts_erase_fun_entry(fe);
+                }
+                break;
+            }
+        case REF_SUBTAG:
+            {
+                ErtsMagicBinary *bptr;
+                ASSERT(is_magic_ref_thing(oh));
+                bptr = ((ErtsMRefThing *) oh)->mb;
+                erts_bin_release((Binary *) bptr);
+                break;
+            }
+        default:
+            ASSERT(is_external_header(oh->thing_word));
+            erts_deref_node_entry(((ExternalThing*)oh)->node);
+        }
+        oh = oh->next;
     }
     erts_free(ERTS_ALC_T_LITERAL, literal_area);
 }
diff --git a/erts/emulator/beam/beam_ranges.c b/erts/emulator/beam/beam_ranges.c
index 6e373a3480..01bda7f3c1 100644
--- a/erts/emulator/beam/beam_ranges.c
+++ b/erts/emulator/beam/beam_ranges.c
@@ -32,6 +32,15 @@ typedef struct {
     erts_atomic_t end; /* (BeamInstr*) Points one word beyond last function in module. */
 } Range;
 
+/*
+ * Used for crash dumping of literals. The size of erts_dump_lit_areas is
+ * always twice the number of active ranges (to allow for literals in both
+ * current and old code).
+ */
+
+ErtsLiteralArea** erts_dump_lit_areas;
+Uint erts_dump_num_lit_areas;
+
 /* Range 'end' needs to be atomic as we purge module
     by setting end=start in active code_ix */
 #define RANGE_END(R) ((BeamInstr*)erts_atomic_read_nob(&(R)->end))
@@ -97,6 +106,11 @@ erts_init_ranges(void)
 	r[i].allocated = 0;
 	erts_atomic_init_nob(&r[i].mid, 0);
     }
+
+    erts_dump_num_lit_areas = 8;
+    erts_dump_lit_areas = (ErtsLiteralArea **)
+        erts_alloc(ERTS_ALC_T_CRASH_DUMP,
+                   erts_dump_num_lit_areas * sizeof(ErtsLiteralArea*));
 }
 
 void
@@ -164,6 +178,14 @@ erts_end_staging_ranges(int commit)
 	erts_atomic_set_nob(&r[dst].mid,
 				(erts_aint_t) (r[dst].modules +
 					       r[dst].n / 2));
+
+        if (r[dst].allocated * 2 > erts_dump_num_lit_areas) {
+            erts_dump_num_lit_areas *= 2;
+            erts_dump_lit_areas = (ErtsLiteralArea **)
+                erts_realloc(ERTS_ALC_T_CRASH_DUMP,
+                             (void *) erts_dump_lit_areas,
+                             erts_dump_num_lit_areas * sizeof(ErtsLiteralArea*));
+        }
     }
 }
 
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c
index ad555bb195..50699eac31 100644
--- a/erts/emulator/beam/bif.c
+++ b/erts/emulator/beam/bif.c
@@ -227,17 +227,40 @@ BIF_RETTYPE link_1(BIF_ALIST_1)
 		goto res_no_proc;
 	    }
 
-	    code = erts_dsig_prepare(&dsd, dep, BIF_P, ERTS_DSP_RLOCK, 0);
+	    code = erts_dsig_prepare(&dsd, dep, BIF_P,
+				     (ERTS_PROC_LOCK_MAIN | ERTS_PROC_LOCK_LINK),
+				     ERTS_DSP_RLOCK, 0, 1);
 	    switch (code) {
 	    case ERTS_DSIG_PREP_NOT_ALIVE:
-		/* Let the dlink trap handle it */
-	    case ERTS_DSIG_PREP_NOT_CONNECTED:
-		erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK);
-		BIF_TRAP1(dlink_trap, BIF_P, BIF_ARG_1);
-
+	    case ERTS_DSIG_PREP_NOT_CONNECTED: {
+		ErtsProcLocks locks = ERTS_PROC_LOCK_MAIN | ERTS_PROC_LOCK_LINK;
+		erts_aint32_t state;
+		erts_proc_lock(BIF_P, (ERTS_PROC_LOCKS_ALL & ~locks));
+		locks = ERTS_PROC_LOCKS_ALL;
+		erts_send_exit_signal(BIF_P, BIF_ARG_1, BIF_P, &locks,
+				      am_noconnection, NIL, NULL, 0);
+		erts_proc_unlock(BIF_P, locks & ERTS_PROC_LOCKS_ALL_MINOR);
+
+		/*
+		 * Copy-paste from old dist_exit_3, not sure if we really
+		 * need erts_handle_pending_exit when exit_2 does not.
+		 */
+		state = erts_atomic32_read_acqb(&BIF_P->state);
+		if (state & (ERTS_PSFLG_EXITING|ERTS_PSFLG_PENDING_EXIT)) {
+#ifdef ERTS_SMP
+		    if (state & ERTS_PSFLG_PENDING_EXIT)
+			erts_handle_pending_exit(BIF_P, ERTS_PROC_LOCK_MAIN);
+#endif
+		    ERTS_BIF_EXITED(BIF_P);
+		}
+		BIF_RET(am_true);
+	    }
+            case ERTS_DSIG_PREP_PENDING:
 	    case ERTS_DSIG_PREP_CONNECTED:
-		/* We are connected. Setup link and send link signal */
-
+                /*
+                 * We have (pending) connection.
+                 * Setup link and enqueue link signal.
+                 */
 		erts_de_links_lock(dep);
 
 		erts_add_link(&ERTS_P_LINKS(BIF_P), LINK_PID, BIF_ARG_1);
@@ -256,8 +279,7 @@ BIF_RETTYPE link_1(BIF_ALIST_1)
 		    ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
 		BIF_RET(am_true);
 	    default:
-		ASSERT(! "Invalid dsig prepare result");
-		BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR);
+		ERTS_ASSERT(! "Invalid dsig prepare result");
 	    }
 	}
     }
@@ -292,7 +314,8 @@ remote_demonitor(Process *c_p, DistEntry *dep, Eterm ref, Eterm to)
     ERTS_LC_ASSERT((ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_LINK)
 		       == erts_proc_lc_my_proc_locks(c_p));
 
-    code = erts_dsig_prepare(&dsd, dep, c_p, ERTS_DSP_RLOCK, 0);
+    code = erts_dsig_prepare(&dsd, dep, c_p, ERTS_PROC_LOCK_MAIN,
+			     ERTS_DSP_RLOCK, 0, 0);
     switch (code) {
     case ERTS_DSIG_PREP_NOT_ALIVE:
     case ERTS_DSIG_PREP_NOT_CONNECTED:
@@ -313,6 +336,7 @@ remote_demonitor(Process *c_p, DistEntry *dep, Eterm ref, Eterm to)
         res = am_true;
 	break;
 
+    case ERTS_DSIG_PREP_PENDING:
     case ERTS_DSIG_PREP_CONNECTED:
 
 	erts_de_links_lock(dep);
@@ -347,8 +371,7 @@ remote_demonitor(Process *c_p, DistEntry *dep, Eterm ref, Eterm to)
 	}
 	break;
     default:
-	ASSERT(! "Invalid dsig prepare result");
-        return am_internal_error;
+	ERTS_ASSERT(! "Invalid dsig prepare result");
     }
 
 
@@ -767,23 +790,20 @@ remote_monitor(Process *p, Eterm bifarg1, Eterm bifarg2,
     BIF_RETTYPE ret;
     int code;
 
+    ASSERT(dep);
     erts_proc_lock(p, ERTS_PROC_LOCK_LINK);
-    code = erts_dsig_prepare(&dsd, dep, p, ERTS_DSP_RLOCK, 0);
+    code = erts_dsig_prepare(&dsd, dep,
+			     p, (ERTS_PROC_LOCK_MAIN | ERTS_PROC_LOCK_LINK),
+			     ERTS_DSP_RLOCK, 0, 1);
     switch (code) {
     case ERTS_DSIG_PREP_NOT_ALIVE:
-	/* Let the dmonitor_p trap handle it */
     case ERTS_DSIG_PREP_NOT_CONNECTED:
 	erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
 	ERTS_BIF_PREP_TRAP2(ret, dmonitor_p_trap, p, bifarg1, bifarg2);
 	break;
+    case ERTS_DSIG_PREP_PENDING:
     case ERTS_DSIG_PREP_CONNECTED:
-	if (!(dep->flags & DFLAG_DIST_MONITOR)
-	    || (byname && !(dep->flags & DFLAG_DIST_MONITOR_NAME))) {
-	    erts_de_runlock(dep);
-	    erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
-	    ERTS_BIF_PREP_ERROR(ret, p, BADARG);
-	}
-	else {
+	{
 	    Eterm p_trgt, p_name, d_name, mon_ref;
 
 	    mon_ref = erts_make_ref(p);
@@ -818,9 +838,7 @@ remote_monitor(Process *p, Eterm bifarg1, Eterm bifarg2,
 	}
 	break;
     default:
-	ASSERT(! "Invalid dsig prepare result");
-	ERTS_BIF_PREP_ERROR(ret, p, EXC_INTERNAL_ERROR);
-	break;
+	ERTS_ASSERT(! "Invalid dsig prepare result");
     }
 
     BIF_RET(ret);
@@ -888,17 +906,17 @@ local_port:
 	if (!erts_is_alive && remote_node != am_Noname) {
             goto badarg; /* Remote monitor from (this) undistributed node */
 	}
-	dep = erts_sysname_to_connected_dist_entry(remote_node);
+	dep = erts_find_or_insert_dist_entry(remote_node);
 	if (dep == erts_this_dist_entry) {
             ret = local_name_monitor(BIF_P, BIF_ARG_1, name);
 	} else {
 	    ret = remote_monitor(BIF_P, BIF_ARG_1, BIF_ARG_2, dep, name, 1);
 	}
+	erts_deref_dist_entry(dep);
     } else {
 badarg:
 	ERTS_BIF_PREP_ERROR(ret, BIF_P, BADARG);
     }
-
     return ret;
 }
 
@@ -1158,21 +1176,14 @@ BIF_RETTYPE unlink_1(BIF_ALIST_1)
 	    BIF_RET(am_true);
 	}
 
-	code = erts_dsig_prepare(&dsd, dep, BIF_P, ERTS_DSP_NO_LOCK, 0);
+	code = erts_dsig_prepare(&dsd, dep, BIF_P, ERTS_PROC_LOCK_MAIN,
+				 ERTS_DSP_NO_LOCK, 0, 0);
 	switch (code) {
 	case ERTS_DSIG_PREP_NOT_ALIVE:
 	case ERTS_DSIG_PREP_NOT_CONNECTED:
-#if 1
 	    BIF_RET(am_true);
-#else
-	    /*
-	     * This is how we used to do it, but the link is obviously not
-	     * active, so I see no point in setting up a connection.
-	     * /Rickard
-	     */
-	    BIF_TRAP1(dunlink_trap, BIF_P, BIF_ARG_1);
-#endif
 
+	case ERTS_DSIG_PREP_PENDING:
 	case ERTS_DSIG_PREP_CONNECTED:
 	    erts_remove_dist_link(&dld, BIF_P->common.id, BIF_ARG_1, dep);
 	    code = erts_dsig_send_unlink(&dsd, BIF_P->common.id, BIF_ARG_1);
@@ -1545,22 +1556,24 @@ BIF_RETTYPE exit_2(BIF_ALIST_2)
 	 DistEntry *dep;
 
 	 dep = external_pid_dist_entry(BIF_ARG_1);
+	 ERTS_ASSERT(dep);
 	 if(dep == erts_this_dist_entry)
 	     BIF_RET(am_true);
 
-	 code = erts_dsig_prepare(&dsd, dep, BIF_P, ERTS_DSP_NO_LOCK, 0);
+	 code = erts_dsig_prepare(&dsd, dep, BIF_P, ERTS_PROC_LOCK_MAIN,
+				  ERTS_DSP_NO_LOCK, 0, 1);
 	 switch (code) {
 	 case ERTS_DSIG_PREP_NOT_ALIVE:
 	 case ERTS_DSIG_PREP_NOT_CONNECTED:
-	     BIF_TRAP2(dexit_trap, BIF_P, BIF_ARG_1, BIF_ARG_2);
+	     BIF_RET(am_true);
+	 case ERTS_DSIG_PREP_PENDING:
 	 case ERTS_DSIG_PREP_CONNECTED:
 	     code = erts_dsig_send_exit2(&dsd, BIF_P->common.id, BIF_ARG_1, BIF_ARG_2);
 	     if (code == ERTS_DSIG_SEND_YIELD)
 		 ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
 	     BIF_RET(am_true);
 	 default:
-	     ASSERT(! "Invalid dsig prepare result");
-	     BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR);
+	     ERTS_ASSERT(! "Invalid dsig prepare result");
 	 }
      }
      else if (is_not_internal_pid(BIF_ARG_1)) {
@@ -1964,7 +1977,7 @@ ebif_bang_2(BIF_ALIST_2)
  * Send a message to Process, Port or Registered Process.
  * Returns non-negative reduction bump or negative result code.
  */
-#define SEND_TRAP		(-1)
+#define SEND_NOCONNECT		(-1)
 #define SEND_YIELD		(-2)
 #define SEND_YIELD_RETURN	(-3)
 #define SEND_BADARG		(-4)
@@ -1980,20 +1993,22 @@ static Sint remote_send(Process *p, DistEntry *dep,
 {
     Sint res;
     int code;
-
     ASSERT(is_atom(to) || is_external_pid(to));
 
     ctx->dep = dep;
-    code = erts_dsig_prepare(&ctx->dsd, dep, p, ERTS_DSP_NO_LOCK, !ctx->suspend);
+    code = erts_dsig_prepare(&ctx->dsd, dep, p, ERTS_PROC_LOCK_MAIN,
+			     ERTS_DSP_NO_LOCK,
+			     !ctx->suspend, ctx->connect);
     switch (code) {
     case ERTS_DSIG_PREP_NOT_ALIVE:
     case ERTS_DSIG_PREP_NOT_CONNECTED:
-	res = SEND_TRAP;
+	res = SEND_NOCONNECT;
 	break;
     case ERTS_DSIG_PREP_WOULD_SUSPEND:
 	ASSERT(!ctx->suspend);
 	res = SEND_YIELD;
 	break;
+    case ERTS_DSIG_PREP_PENDING:
     case ERTS_DSIG_PREP_CONNECTED: {
 
 	if (is_atom(to))
@@ -2170,6 +2185,7 @@ do_send(Process *p, Eterm to, Eterm msg, Eterm *refp, ErtsSendContext *ctx)
 	}
 	return ret_val;
     } else if (is_tuple(to)) { /* Remote send */
+        int deref_dep = 0;
 	int ret;
 	tp = tuple_val(to);
 	if (*tp != make_arityval(2))
@@ -2177,11 +2193,10 @@ do_send(Process *p, Eterm to, Eterm msg, Eterm *refp, ErtsSendContext *ctx)
 	if (is_not_atom(tp[1]) || is_not_atom(tp[2]))
 	    return SEND_BADARG;
 	
-	/* sysname_to_connected_dist_entry will return NULL if there
-	   is no dist_entry or the dist_entry has no port,
+	/* erts_find_dist_entry will return NULL if there is no dist_entry
 	   but remote_send() will handle that. */
 
-	dep = erts_sysname_to_connected_dist_entry(tp[2]);
+	dep = erts_find_dist_entry(tp[2]);
 
 	if (dep == erts_this_dist_entry) {
 	    Eterm id;
@@ -2205,13 +2220,20 @@ do_send(Process *p, Eterm to, Eterm msg, Eterm *refp, ErtsSendContext *ctx)
 	    }
 	    return 0;
 	}
+        if (dep == NULL) {
+            dep = erts_find_or_insert_dist_entry(tp[2]);
+            ASSERT(dep != erts_this_dist_entry);
+            deref_dep = 1;
+        }
+	ctx->dsd.node = tp[2];
 
 	ret = remote_send(p, dep, tp[1], to, msg, ctx);
 	if (ret == SEND_YIELD_CONTINUE) {
-            if (dep)
-                erts_ref_dist_entry(dep);
-	    ctx->dep_to_deref = dep;
+            erts_ref_dist_entry(ctx->dep);
+            ctx->deref_dep = 1;
 	}
+        if (deref_dep)
+            erts_deref_dist_entry(dep);
 	return ret;
     } else {
 	if (IS_TRACED_FL(p, F_TRACE_SEND))
@@ -2251,7 +2273,6 @@ BIF_RETTYPE send_3(BIF_ALIST_3)
     Eterm msg = BIF_ARG_2;
     Eterm opts = BIF_ARG_3;
 
-    int connect = !0;
     Eterm l = opts;
     Sint result;
 
@@ -2262,14 +2283,15 @@ BIF_RETTYPE send_3(BIF_ALIST_3)
     UseTmpHeap(sizeof(ErtsSendContext)/sizeof(Eterm), BIF_P);
 
     ctx->suspend = !0;
-    ctx->dep_to_deref = NULL;
+    ctx->connect = !0;
+    ctx->deref_dep = 0;
     ctx->return_term = am_ok;
     ctx->dss.reds = (Sint) (ERTS_BIF_REDS_LEFT(p) * TERM_TO_BINARY_LOOP_FACTOR);
     ctx->dss.phase = ERTS_DSIG_SEND_PHASE_INIT;
 
     while (is_list(l)) {
 	if (CAR(list_val(l)) == am_noconnect) {
-	    connect = 0;
+	    ctx->connect = 0;
 	} else if (CAR(list_val(l)) == am_nosuspend) {
 	    ctx->suspend = 0;
 	} else {
@@ -2306,9 +2328,9 @@ BIF_RETTYPE send_3(BIF_ALIST_3)
 	    goto yield_return;
 	ERTS_BIF_PREP_RET(retval, am_ok);
 	break;
-    case SEND_TRAP:
-	if (connect) {
-	    ERTS_BIF_PREP_TRAP3(retval, dsend3_trap, p, to, msg, opts);
+    case SEND_NOCONNECT:
+	if (ctx->connect) {
+	    ERTS_BIF_PREP_RET(retval, am_ok);
 	} else {
 	    ERTS_BIF_PREP_RET(retval, am_noconnect);
 	}
@@ -2412,7 +2434,8 @@ Eterm erl_send(Process *p, Eterm to, Eterm msg)
     ref = NIL;
 #endif
     ctx->suspend = !0;
-    ctx->dep_to_deref = NULL;
+    ctx->connect = !0;
+    ctx->deref_dep = 0;
     ctx->return_term = msg;
     ctx->dss.reds = (Sint) (ERTS_BIF_REDS_LEFT(p) * TERM_TO_BINARY_LOOP_FACTOR);
     ctx->dss.phase = ERTS_DSIG_SEND_PHASE_INIT;
@@ -2436,8 +2459,8 @@ Eterm erl_send(Process *p, Eterm to, Eterm msg)
 	    goto yield_return;
 	ERTS_BIF_PREP_RET(retval, msg);
 	break;
-    case SEND_TRAP:
-	ERTS_BIF_PREP_TRAP2(retval, dsend2_trap, p, to, msg);
+    case SEND_NOCONNECT:
+	ERTS_BIF_PREP_RET(retval, msg);
 	break;
     case SEND_YIELD:
 	ERTS_BIF_PREP_YIELD2(retval, bif_export[BIF_send_2], p, to, msg);
@@ -4200,7 +4223,7 @@ BIF_RETTYPE list_to_port_1(BIF_ALIST_1)
 
     cp += 6; /* strlen("#Port<") */
 
-    if (sscanf(cp, "%u.%u>", &n, &p) < 2)
+    if (sscanf(cp, "%u.%u>", (unsigned int*)&n, (unsigned int*)&p) < 2)
         goto bad;
 
     if (p > ERTS_MAX_PORT_NUMBER)
@@ -4384,23 +4407,24 @@ BIF_RETTYPE group_leader_2(BIF_ALIST_2)
 	int code;
 	ErtsDSigData dsd;
 	dep = external_pid_dist_entry(BIF_ARG_2);
+	ERTS_ASSERT(dep);
 	if(dep == erts_this_dist_entry)
 	    BIF_ERROR(BIF_P, BADARG);
 
-	code = erts_dsig_prepare(&dsd, dep, BIF_P, ERTS_DSP_NO_LOCK, 0);
+	code = erts_dsig_prepare(&dsd, dep, BIF_P, ERTS_PROC_LOCK_MAIN,
+				 ERTS_DSP_NO_LOCK, 0, 1);
 	switch (code) {
 	case ERTS_DSIG_PREP_NOT_ALIVE:
-	    BIF_RET(am_true);
 	case ERTS_DSIG_PREP_NOT_CONNECTED:
-	    BIF_TRAP2(dgroup_leader_trap, BIF_P, BIF_ARG_1, BIF_ARG_2);
+	    BIF_RET(am_true);
+	case ERTS_DSIG_PREP_PENDING:
 	case ERTS_DSIG_PREP_CONNECTED:
 	    code = erts_dsig_send_group_leader(&dsd, BIF_ARG_1, BIF_ARG_2);
 	    if (code == ERTS_DSIG_SEND_YIELD)
 		ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
 	    BIF_RET(am_true);
 	default:
-	    ASSERT(! "Invalid dsig prepare result");
-	    BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR);
+	    ERTS_ASSERT(! "Invalid dsig prepare result");
 	}
     }
     else if (is_internal_pid(BIF_ARG_2)) {
diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab
index f7b4451890..1bd4acbf95 100644
--- a/erts/emulator/beam/bif.tab
+++ b/erts/emulator/beam/bif.tab
@@ -153,14 +153,12 @@ bif erlang:whereis/1
 bif erlang:spawn_opt/1
 bif erlang:setnode/2
 bif erlang:setnode/3
-bif erlang:dist_exit/3
 bif erlang:dist_get_stat/1
 bif erlang:dist_ctrl_input_handler/2
 bif erlang:dist_ctrl_put_data/2
 bif erlang:dist_ctrl_get_data/1
 bif erlang:dist_ctrl_get_data_notification/1
 
-
 # Static native functions in erts_internal
 bif erts_internal:port_info/1
 bif erts_internal:port_info/2
@@ -629,7 +627,6 @@ bif re:inspect/2
 
 ubif erlang:is_map/1
 gcbif erlang:map_size/1
-bif maps:to_list/1
 bif maps:find/2
 bif maps:get/2
 bif maps:from_list/1
@@ -684,10 +681,16 @@ bif math:floor/1
 bif math:ceil/1
 bif math:fmod/2
 bif os:set_signal/2
-bif erts_internal:maps_to_list/2
 
 #
 # New in 20.1
 #
-
 bif erlang:iolist_to_iovec/1
+
+#
+# New in 21.0
+#
+
+bif erts_internal:new_connection/1
+bif erts_internal:abort_connection/2
+bif erts_internal:map_next/3
diff --git a/erts/emulator/beam/break.c b/erts/emulator/beam/break.c
index 35b2365655..2bfb481771 100644
--- a/erts/emulator/beam/break.c
+++ b/erts/emulator/beam/break.c
@@ -58,6 +58,8 @@ static void dump_attributes(fmtfn_t to, void *to_arg, byte* ptr, int size);
 
 extern char* erts_system_version[];
 
+#define WRITE_BUFFER_SIZE (64*1024)
+
 static void
 port_info(fmtfn_t to, void *to_arg)
 {
@@ -486,9 +488,7 @@ loaded(fmtfn_t to, void *to_arg)
 static void
 dump_attributes(fmtfn_t to, void *to_arg, byte* ptr, int size)
 {
-    while (size-- > 0) {
-	erts_print(to, to_arg, "%02X", *ptr++);
-    }
+    erts_print_base64(to, to_arg, ptr, size);
     erts_print(to, to_arg, "\n");
 }
 
@@ -673,18 +673,28 @@ bin_check(void)
 static Sint64 crash_dump_limit = ERTS_SINT64_MAX;
 static Sint64 crash_dump_written = 0;
 
-static int crash_dump_limited_writer(void* vfdp, char* buf, size_t len)
+typedef struct LimitedWriterInfo_ {
+    fmtfn_t to;
+    void* to_arg;
+} LimitedWriterInfo;
+
+static int
+crash_dump_limited_writer(void* vfdp, char* buf, size_t len)
 {
     const char stop_msg[] = "\n=abort:CRASH DUMP SIZE LIMIT REACHED\n";
+    LimitedWriterInfo* lwi = (LimitedWriterInfo *) vfdp;
 
     crash_dump_written += len;
     if (crash_dump_written <= crash_dump_limit) {
-        return erts_write_fd(vfdp, buf, len);
+        return lwi->to(lwi->to_arg, buf, len);
     }
 
     len -= (crash_dump_written - crash_dump_limit);
-    erts_write_fd(vfdp, buf, len);
-    erts_write_fd(vfdp, (char*)stop_msg, sizeof(stop_msg)-1);
+    lwi->to(lwi->to_arg, buf, len);
+    lwi->to(lwi->to_arg, (char*)stop_msg, sizeof(stop_msg)-1);
+    if (lwi->to == &erts_write_fp) {
+        fclose((FILE *) lwi->to_arg);
+    }
 
     /* We assume that crash dump was called from erts_exit_vv() */
     erts_exit_epilogue();
@@ -707,6 +717,9 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
     int i;
     fmtfn_t to = &erts_write_fd;
     void*   to_arg;
+    FILE* fp = 0;
+    LimitedWriterInfo lwi;
+    static char* write_buffer;  /* 'static' to avoid a leak warning in valgrind */
 
     if (ERTS_SOMEONE_IS_CRASH_DUMPING)
 	return;
@@ -810,9 +823,30 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
     fd = open(dumpname,O_WRONLY | O_CREAT | O_TRUNC,0640);
     if (fd < 0)
 	return; /* Can't create the crash dump, skip it */
-    to_arg = (void*)&fd;
+
+    /*
+     * Wrap into a FILE* so that we can use buffered output. Set an
+     * explicit buffer to make sure the first write does not fail because
+     * of a failure to allocate a buffer.
+     */
+    write_buffer = (char *) erts_alloc_fnf(ERTS_ALC_T_TMP, WRITE_BUFFER_SIZE);
+    if (write_buffer && (fp = fdopen(fd, "w")) != NULL) {
+        setvbuf(fp, write_buffer, _IOFBF, WRITE_BUFFER_SIZE);
+        lwi.to = &erts_write_fp;
+        lwi.to_arg = (void*)fp;
+    } else {
+        lwi.to = &erts_write_fd;
+        lwi.to_arg = (void*)&fd;
+    }
+    if (to == &crash_dump_limited_writer) {
+        to_arg = (void *) &lwi;
+    } else {
+        to = lwi.to;
+        to_arg = lwi.to_arg;
+    }
+
     time(&now);
-    erts_cbprintf(to, to_arg, "=erl_crash_dump:0.3\n%s", ctime(&now));
+    erts_cbprintf(to, to_arg, "=erl_crash_dump:0.5\n%s", ctime(&now));
 
     if (file != NULL)
        erts_cbprintf(to, to_arg, "The error occurred in file %s, line %d\n", file, line);
@@ -916,7 +950,35 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
     }
 
     erts_cbprintf(to, to_arg, "=end\n");
+    if (fp) {
+        fclose(fp);
+    }
     close(fd);
     erts_fprintf(stderr,"done\n");
 }
 
+void
+erts_print_base64(fmtfn_t to, void *to_arg, byte* src, Uint size)
+{
+    static const byte base64_chars[] =
+        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+    while (size >= 3) {
+        erts_putc(to, to_arg, base64_chars[src[0] >> 2]);
+        erts_putc(to, to_arg, base64_chars[((src[0] & 0x03) << 4) | (src[1] >> 4)]);
+        erts_putc(to, to_arg, base64_chars[((src[1] & 0x0f) << 2) | (src[2] >> 6)]);
+        erts_putc(to, to_arg, base64_chars[src[2] & 0x3f]);
+        size -= 3;
+        src += 3;
+    }
+    if (size == 1) {
+        erts_putc(to, to_arg, base64_chars[src[0] >> 2]);
+        erts_putc(to, to_arg, base64_chars[(src[0] & 0x03) << 4]);
+        erts_print(to, to_arg, "==");
+    } else if (size == 2) {
+        erts_putc(to, to_arg, base64_chars[src[0] >> 2]);
+        erts_putc(to, to_arg, base64_chars[((src[0] & 0x03) << 4) | (src[1] >> 4)]);
+        erts_putc(to, to_arg, base64_chars[(src[1] & 0x0f) << 2]);
+        erts_putc(to, to_arg, '=');
+    }
+}
diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c
index bc168fc58d..7ff7462bf6 100644
--- a/erts/emulator/beam/dist.c
+++ b/erts/emulator/beam/dist.c
@@ -103,21 +103,12 @@ dist_msg_dbg(ErtsDistExternal *edep, char *what, byte *buf, int sz)
 
 
 
-#define PASS_THROUGH 'p'        /* This code should go */
-
 int erts_is_alive; /* System must be blocked on change */
 int erts_dist_buf_busy_limit;
 
 
 /* distribution trap functions */
-Export* dsend2_trap = NULL;
-Export* dsend3_trap = NULL;
-/*Export* dsend_nosuspend_trap = NULL;*/
-Export* dlink_trap = NULL;
-Export* dunlink_trap = NULL;
 Export* dmonitor_node_trap = NULL;
-Export* dgroup_leader_trap = NULL;
-Export* dexit_trap = NULL;
 Export* dmonitor_p_trap = NULL;
 
 /* local variables */
@@ -129,6 +120,7 @@ static void clear_dist_entry(DistEntry*);
 static int dsig_send_ctl(ErtsDSigData* dsdp, Eterm ctl, int force_busy);
 static void send_nodes_mon_msgs(Process *, Eterm, Eterm, Eterm, Eterm);
 static void init_nodes_monitors(void);
+static Sint abort_connection(DistEntry* dep, Uint32 conn_id);
 
 static erts_atomic_t no_caches;
 static erts_atomic_t no_nodes;
@@ -383,22 +375,24 @@ static void doit_node_link_net_exits(ErtsLink *lnk, void *vnecp)
 	if (!rp)
 	    goto done;
 	erts_proc_lock(rp, rp_locks);
-	rlnk = erts_remove_link(&ERTS_P_LINKS(rp), name);
-	if (rlnk != NULL) {
-	    ASSERT(is_atom(rlnk->pid) && (rlnk->type == LINK_NODE));
-	    erts_destroy_link(rlnk);
-	}
-	n = ERTS_LINK_REFC(lnk);
-	for (i = 0; i < n; ++i) {
-	    Eterm tup;
-	    Eterm *hp;
-	    ErtsMessage *msgp;
-
-	    msgp = erts_alloc_message_heap(rp, &rp_locks,
-					   3, &hp, &ohp);
-	    tup = TUPLE2(hp, am_nodedown, name);
-	    erts_queue_message(rp, rp_locks, msgp, tup, am_system);
-	}
+        if (!ERTS_PROC_IS_EXITING(rp)) {
+            rlnk = erts_remove_link(&ERTS_P_LINKS(rp), name);
+            if (rlnk != NULL) {
+                ASSERT(is_atom(rlnk->pid) && (rlnk->type == LINK_NODE));
+                erts_destroy_link(rlnk);
+            }
+            n = ERTS_LINK_REFC(lnk);
+            for (i = 0; i < n; ++i) {
+                Eterm tup;
+                Eterm *hp;
+                ErtsMessage *msgp;
+
+                msgp = erts_alloc_message_heap(rp, &rp_locks,
+                                               3, &hp, &ohp);
+                tup = TUPLE2(hp, am_nodedown, name);
+                erts_queue_message(rp, rp_locks, msgp, tup, am_system);
+            }
+        }
 	erts_proc_unlock(rp, rp_locks);
     }
  done:
@@ -484,41 +478,55 @@ int erts_do_net_exits(DistEntry *dep, Eterm reason)
 
     if (dep == erts_this_dist_entry) {  /* Net kernel has died (clean up!!) */
 	DistEntry *tdep;
-	int no_dist_ctrl = 0;
+	int no_dist_ctrl;
+        int no_pending;
 	Eterm nd_reason = (reason == am_no_network
 			   ? am_no_network
 			   : am_net_kernel_terminated);
+        int i = 0;
+        Eterm *dist_ctrl;
+        DistEntry** pending;
+
+        ERTS_UNDEF(dist_ctrl, NULL);
+        ERTS_UNDEF(pending, NULL);
+
 	erts_rwmtx_rlock(&erts_dist_table_rwmtx);
 
-	for (tdep = erts_hidden_dist_entries; tdep; tdep = tdep->next)
-	    no_dist_ctrl++;
-	for (tdep = erts_visible_dist_entries; tdep; tdep = tdep->next)
-	    no_dist_ctrl++;
+        no_dist_ctrl = (erts_no_of_hidden_dist_entries +
+                        erts_no_of_visible_dist_entries);
+        no_pending = erts_no_of_pending_dist_entries;
 
 	/* KILL all port controllers */
-	if (no_dist_ctrl == 0)
-	    erts_rwmtx_runlock(&erts_dist_table_rwmtx);
-	else {
-	    Eterm def_buf[128];
-	    int i = 0;
-	    Eterm *dist_ctrl;
-
-	    if (no_dist_ctrl <= sizeof(def_buf)/sizeof(def_buf[0]))
-		dist_ctrl = &def_buf[0];
-	    else
-		dist_ctrl = erts_alloc(ERTS_ALC_T_TMP,
-				       sizeof(Eterm)*no_dist_ctrl);
+	if (no_dist_ctrl) {
+            dist_ctrl = erts_alloc(ERTS_ALC_T_TMP,
+                                   sizeof(Eterm)*no_dist_ctrl);
 	    for (tdep = erts_hidden_dist_entries; tdep; tdep = tdep->next) {
 		ASSERT(is_internal_port(tdep->cid) || is_internal_pid(tdep->cid));
+                ASSERT(i < no_dist_ctrl);
 		dist_ctrl[i++] = tdep->cid;
 	    }
 	    for (tdep = erts_visible_dist_entries; tdep; tdep = tdep->next) {
 		ASSERT(is_internal_port(tdep->cid) || is_internal_pid(tdep->cid));
+                ASSERT(i < no_dist_ctrl);
 		dist_ctrl[i++] = tdep->cid;
 	    }
-	    erts_rwmtx_runlock(&erts_dist_table_rwmtx);
+            ASSERT(i == no_dist_ctrl);
+        }
+        if (no_pending) {
+            pending = erts_alloc(ERTS_ALC_T_TMP, sizeof(DistEntry*)*no_pending);
+            i = 0;
+            for (tdep = erts_pending_dist_entries; tdep; tdep = tdep->next) {
+                ASSERT(is_nil(tdep->cid));
+                ASSERT(i < no_pending);
+                pending[i++] = tdep;
+                erts_ref_dist_entry(tdep);
+            }
+            ASSERT(i == no_pending);
+        }
+        erts_rwmtx_runlock(&erts_dist_table_rwmtx);
 
-	    for (i = 0; i < no_dist_ctrl; i++) {
+        if (no_dist_ctrl) {
+            for (i = 0; i < no_dist_ctrl; i++) {
                 if (is_internal_pid(dist_ctrl[i]))
                     schedule_kill_dist_ctrl_proc(dist_ctrl[i]);
                 else {
@@ -532,11 +540,18 @@ int erts_do_net_exits(DistEntry *dep, Eterm reason)
                                        prt, dist_ctrl[i], nd_reason, NULL);
                     }
                 }
-	    }
+            }
+            erts_free(ERTS_ALC_T_TMP, dist_ctrl);
+        }
+
+        if (no_pending) {
+            for (i = 0; i < no_pending; i++) {
+                abort_connection(pending[i], pending[i]->connection_id);
+                erts_deref_dist_entry(pending[i]);
+            }
+            erts_free(ERTS_ALC_T_TMP, pending);
+        }
 
-	    if (dist_ctrl != &def_buf[0])
-		erts_free(ERTS_ALC_T_TMP, dist_ctrl);
-	}
 
 	/*
 	 * When last dist ctrl exits, node will be taken
@@ -613,7 +628,6 @@ int erts_do_net_exits(DistEntry *dep, Eterm reason)
 			    reason == am_normal ? am_connection_closed : reason);
 
 	clear_dist_entry(dep);
-
     }
 
     dec_no_nodes();
@@ -638,14 +652,7 @@ void init_dist(void)
     erts_atomic_init_nob(&no_caches, 0);
 
     /* Lookup/Install all references to trap functions */
-    dsend2_trap = trap_function(am_dsend,2);
-    dsend3_trap = trap_function(am_dsend,3);
-    /*    dsend_nosuspend_trap = trap_function(am_dsend_nosuspend,2);*/
-    dlink_trap = trap_function(am_dlink,1);
-    dunlink_trap = trap_function(am_dunlink,1);
     dmonitor_node_trap = trap_function(am_dmonitor_node,3);
-    dgroup_leader_trap = trap_function(am_dgroup_leader,2);
-    dexit_trap = trap_function(am_dexit, 2);
     dmonitor_p_trap = trap_function(am_dmonitor_p, 2);
     dist_ctrl_put_data_trap = erts_export_put(am_erts_internal,
                                               am_dist_ctrl_put_data,
@@ -664,6 +671,7 @@ alloc_dist_obuf(Uint size)
     obuf = (ErtsDistOutputBuf *) &bin->orig_bytes[0];
 #ifdef DEBUG
     obuf->dbg_pattern = ERTS_DIST_OUTPUT_BUF_DBG_PATTERN;
+    obuf->alloc_endp = obuf->data + size;
     ASSERT(bin == ErtsDistOutputBuf2Binary(obuf));
 #endif
     return obuf;
@@ -684,31 +692,11 @@ size_obuf(ErtsDistOutputBuf *obuf)
     return bin->orig_size;
 }
 
-static void clear_dist_entry(DistEntry *dep)
+static ErtsDistOutputBuf* clear_de_out_queues(DistEntry* dep)
 {
-    Sint obufsize = 0;
-    ErtsAtomCache *cache;
-    ErtsProcList *suspendees;
     ErtsDistOutputBuf *obuf;
 
-    erts_de_rwlock(dep);
-    erts_atomic_set_nob(&dep->input_handler,
-                        (erts_aint_t) NIL);
-    cache = dep->cache;
-    dep->cache = NULL;
-
-#ifdef DEBUG
-    erts_de_links_lock(dep);
-    ASSERT(!dep->nlinks);
-    ASSERT(!dep->node_links);
-    ASSERT(!dep->monitors);
-    erts_de_links_unlock(dep);
-#endif
-
-    erts_mtx_lock(&dep->qlock);
-
-    erts_atomic64_set_nob(&dep->in, 0);
-    erts_atomic64_set_nob(&dep->out, 0);
+    ERTS_LC_ASSERT(erts_lc_mtx_is_locked(&dep->qlock));
 
     if (!dep->out_queue.last)
 	obuf = dep->finalized_out_queue.first;
@@ -728,17 +716,13 @@ static void clear_dist_entry(DistEntry *dep)
     dep->tmp_out_queue.last = NULL;
     dep->finalized_out_queue.first = NULL;
     dep->finalized_out_queue.last = NULL;
-    dep->status = 0;
-    suspendees = get_suspended_on_de(dep, ERTS_DE_QFLGS_ALL);
 
-    erts_mtx_unlock(&dep->qlock);
-    erts_atomic_set_nob(&dep->dist_cmd_scheduled, 0);
-    dep->send = NULL;
-    erts_de_rwunlock(dep);
-
-    erts_resume_processes(suspendees);
+    return obuf;
+}
 
-    delete_cache(cache);
+static void free_de_out_queues(DistEntry* dep, ErtsDistOutputBuf *obuf)
+{
+    Sint obufsize = 0;
 
     while (obuf) {
 	ErtsDistOutputBuf *fobuf;
@@ -750,13 +734,56 @@ static void clear_dist_entry(DistEntry *dep)
 
     if (obufsize) {
 	erts_mtx_lock(&dep->qlock);
-	ASSERT(erts_atomic_read_nob(&dep->qsize) >= obufsize);
+        ASSERT(erts_atomic_read_nob(&dep->qsize) >= obufsize);
         erts_atomic_add_nob(&dep->qsize,
                             (erts_aint_t) -obufsize);
 	erts_mtx_unlock(&dep->qlock);
     }
 }
 
+static void clear_dist_entry(DistEntry *dep)
+{
+    ErtsAtomCache *cache;
+    ErtsProcList *suspendees;
+    ErtsDistOutputBuf *obuf;
+
+    erts_de_rwlock(dep);
+    erts_atomic_set_nob(&dep->input_handler,
+                        (erts_aint_t) NIL);
+    cache = dep->cache;
+    dep->cache = NULL;
+
+#ifdef DEBUG
+    erts_de_links_lock(dep);
+    ASSERT(!dep->nlinks);
+    ASSERT(!dep->node_links);
+    ASSERT(!dep->monitors);
+    erts_de_links_unlock(dep);
+#endif
+
+    erts_mtx_lock(&dep->qlock);
+
+    erts_atomic64_set_nob(&dep->in, 0);
+    erts_atomic64_set_nob(&dep->out, 0);
+
+    obuf = clear_de_out_queues(dep);
+    dep->status = 0;
+    suspendees = get_suspended_on_de(dep, ERTS_DE_QFLGS_ALL);
+
+    erts_mtx_unlock(&dep->qlock);
+    erts_atomic_set_nob(&dep->dist_cmd_scheduled, 0);
+    dep->send = NULL;
+    erts_de_rwunlock(dep);
+
+    erts_resume_processes(suspendees);
+
+    delete_cache(cache);
+
+    free_de_out_queues(dep, obuf);
+    if (dep->transcode_ctx)
+        transcode_free_ctx(dep);
+}
+
 int erts_dsend_context_dtor(Binary* ctx_bin)
 {
     ErtsSendContext* ctx = ERTS_MAGIC_BIN_DATA(ctx_bin);
@@ -772,8 +799,8 @@ int erts_dsend_context_dtor(Binary* ctx_bin)
     if (ctx->dss.phase >= ERTS_DSIG_SEND_PHASE_ALLOC && ctx->dss.obuf) {
 	free_dist_obuf(ctx->dss.obuf);
     }
-    if (ctx->dep_to_deref)
-	erts_deref_dist_entry(ctx->dep_to_deref);
+    if (ctx->deref_dep)
+	erts_deref_dist_entry(ctx->dep);
 
     return 1;
 }
@@ -852,6 +879,13 @@ erts_dsig_send_m_exit(ErtsDSigData *dsdp, Eterm watcher, Eterm watched,
     DeclareTmpHeapNoproc(ctl_heap,6);
     int res;
 
+    if (~dsdp->dep->flags & (DFLAG_DIST_MONITOR | DFLAG_DIST_MONITOR_NAME)) {
+        /*
+         * Receiver does not support DOP_MONITOR_P_EXIT (see dsig_send_monitor)
+         */
+        return ERTS_DSIG_SEND_OK;
+    }
+
     UseTmpHeapNoproc(6);
 
     ctl = TUPLE5(&ctl_heap[0], make_small(DOP_MONITOR_P_EXIT),
@@ -879,6 +913,16 @@ erts_dsig_send_monitor(ErtsDSigData *dsdp, Eterm watcher, Eterm watched,
     DeclareTmpHeapNoproc(ctl_heap,5);
     int res;
 
+    if (~dsdp->dep->flags & (DFLAG_DIST_MONITOR | DFLAG_DIST_MONITOR_NAME)) {
+        /*
+         * Receiver does not support DOP_MONITOR_P.
+         * Just avoid sending it and by doing that reduce this monitor
+         * to only supervise the connection. This will work for simple c-nodes
+         * with a 1-to-1 relation between "Erlang process" and OS-process.
+         */
+        return ERTS_DSIG_SEND_OK;
+    }
+
     UseTmpHeapNoproc(5);
     ctl = TUPLE4(&ctl_heap[0],
 		 make_small(DOP_MONITOR_P),
@@ -901,6 +945,13 @@ erts_dsig_send_demonitor(ErtsDSigData *dsdp, Eterm watcher,
     DeclareTmpHeapNoproc(ctl_heap,5);
     int res;
 
+    if (~dsdp->dep->flags & (DFLAG_DIST_MONITOR | DFLAG_DIST_MONITOR_NAME)) {
+        /*
+         * Receiver does not support DOP_DEMONITOR_P (see dsig_send_monitor)
+         */
+        return ERTS_DSIG_SEND_OK;
+    }
+
     UseTmpHeapNoproc(5);
     ctl = TUPLE4(&ctl_heap[0],
 		 make_small(DOP_DEMONITOR_P),
@@ -1324,7 +1375,7 @@ int erts_net_message(Port *prt,
 	    /* This is tricky (we MUST force a distributed send) */
 	    ErtsDSigData dsd;
 	    int code;
-	    code = erts_dsig_prepare(&dsd, dep, NULL, ERTS_DSP_NO_LOCK, 0);
+	    code = erts_dsig_prepare(&dsd, dep, NULL, 0, ERTS_DSP_NO_LOCK, 0, 0);
 	    if (code == ERTS_DSIG_PREP_CONNECTED) {
 		code = erts_dsig_send_exit(&dsd, to, from, am_noproc);
 		ASSERT(code == ERTS_DSIG_SEND_OK);
@@ -1416,7 +1467,7 @@ int erts_net_message(Port *prt,
 	if (!rp) {
 	    ErtsDSigData dsd;
 	    int code;
-	    code = erts_dsig_prepare(&dsd, dep, NULL, ERTS_DSP_NO_LOCK, 0);
+	    code = erts_dsig_prepare(&dsd, dep, NULL, 0, ERTS_DSP_NO_LOCK, 0, 0);
 	    if (code == ERTS_DSIG_PREP_CONNECTED) {
 		code = erts_dsig_send_m_exit(&dsd, watcher, watched, ref,
 					     am_noproc);
@@ -1879,33 +1930,32 @@ erts_dsig_send(ErtsDSigData *dsdp, struct erts_dsig_send_context* ctx)
 
 	    if (ctx->flags & DFLAG_DIST_HDR_ATOM_CACHE) {
 		ctx->acmp = erts_get_atom_cache_map(ctx->c_p);
-		ctx->pass_through_size = 0;
+		ctx->max_finalize_prepend = 0;
 	    }
 	    else {
 		ctx->acmp = NULL;
-		ctx->pass_through_size = 1;
+		ctx->max_finalize_prepend = 3;
 	    }
 
     #ifdef ERTS_DIST_MSG_DBG
-	    erts_fprintf(stderr, ">>%s CTL: %T\n", ctx->pass_through_size ? "P" : " ", ctx->ctl);
-        if (is_value(ctx->msg))
-            erts_fprintf(stderr, "    MSG: %T\n", ctx->msg);
+            erts_fprintf(stderr, ">> CTL: %T\n", ctx->ctl);
+            if (is_value(ctx->msg))
+                erts_fprintf(stderr, "    MSG: %T\n", ctx->msg);
     #endif
 
-	    ctx->data_size = ctx->pass_through_size;
+	    ctx->data_size = ctx->max_finalize_prepend;
 	    erts_reset_atom_cache_map(ctx->acmp);
 	    erts_encode_dist_ext_size(ctx->ctl, ctx->flags, ctx->acmp, &ctx->data_size);
 
-	    if (is_value(ctx->msg)) {
-		ctx->u.sc.wstack.wstart = NULL;
-		ctx->u.sc.flags = ctx->flags;
-		ctx->u.sc.level = 0;
-		ctx->phase = ERTS_DSIG_SEND_PHASE_MSG_SIZE;
-	    } else {
-		ctx->phase = ERTS_DSIG_SEND_PHASE_ALLOC;
-	    }
-	    break;
+	    if (is_non_value(ctx->msg)) {
+                ctx->phase = ERTS_DSIG_SEND_PHASE_ALLOC;
+                break;
+            }
+            ctx->u.sc.wstack.wstart = NULL;
+            ctx->u.sc.flags = ctx->flags;
+            ctx->u.sc.level = 0;
 
+            ctx->phase = ERTS_DSIG_SEND_PHASE_MSG_SIZE;
 	case ERTS_DSIG_SEND_PHASE_MSG_SIZE:
 	    if (erts_encode_dist_ext_size_int(ctx->msg, ctx, &ctx->data_size)) {
 		retval = ERTS_DSIG_SEND_CONTINUE;
@@ -1920,23 +1970,24 @@ erts_dsig_send(ErtsDSigData *dsdp, struct erts_dsig_send_context* ctx)
 	    ctx->data_size += ctx->dhdr_ext_size;
 
 	    ctx->obuf = alloc_dist_obuf(ctx->data_size);
-	    ctx->obuf->ext_endp = &ctx->obuf->data[0] + ctx->pass_through_size + ctx->dhdr_ext_size;
+	    ctx->obuf->ext_endp = &ctx->obuf->data[0] + ctx->max_finalize_prepend + ctx->dhdr_ext_size;
 
 	    /* Encode internal version of dist header */
 	    ctx->obuf->extp = erts_encode_ext_dist_header_setup(ctx->obuf->ext_endp, ctx->acmp);
 	    /* Encode control message */
 	    erts_encode_dist_ext(ctx->ctl, &ctx->obuf->ext_endp, ctx->flags, ctx->acmp, NULL, NULL);
-	    if (is_value(ctx->msg)) {
-		ctx->u.ec.flags = ctx->flags;
-		ctx->u.ec.level = 0;
-		ctx->u.ec.wstack.wstart = NULL;
-		ctx->phase = ERTS_DSIG_SEND_PHASE_MSG_ENCODE;
-	    } else {
-		ctx->phase = ERTS_DSIG_SEND_PHASE_FIN;
-	    }
-	    break;
+	    if (is_non_value(ctx->msg)) {
+                ctx->obuf->msg_start = NULL;
+                ctx->phase = ERTS_DSIG_SEND_PHASE_FIN;
+                break;
+            }
+            ctx->u.ec.flags = ctx->flags;
+            ctx->u.ec.level = 0;
+            ctx->u.ec.wstack.wstart = NULL;
+            ctx->obuf->msg_start = ctx->obuf->ext_endp;
 
-	case ERTS_DSIG_SEND_PHASE_MSG_ENCODE:
+            ctx->phase = ERTS_DSIG_SEND_PHASE_MSG_ENCODE;
+        case ERTS_DSIG_SEND_PHASE_MSG_ENCODE:
 	    if (erts_encode_dist_ext(ctx->msg, &ctx->obuf->ext_endp, ctx->flags, ctx->acmp, &ctx->u.ec, &ctx->reds)) {
 		retval = ERTS_DSIG_SEND_CONTINUE;
 		goto done;
@@ -1949,7 +2000,7 @@ erts_dsig_send(ErtsDSigData *dsdp, struct erts_dsig_send_context* ctx)
 	    int resume = 0;
 
 	    ASSERT(ctx->obuf->extp < ctx->obuf->ext_endp);
-	    ASSERT(&ctx->obuf->data[0] <= ctx->obuf->extp - ctx->pass_through_size);
+	    ASSERT(&ctx->obuf->data[0] <= ctx->obuf->extp - ctx->max_finalize_prepend);
 	    ASSERT(ctx->obuf->ext_endp <= &ctx->obuf->data[0] + ctx->data_size);
 
 	    ctx->data_size = ctx->obuf->ext_endp - ctx->obuf->extp;
@@ -1961,9 +2012,9 @@ erts_dsig_send(ErtsDSigData *dsdp, struct erts_dsig_send_context* ctx)
 	    ctx->obuf->next = NULL;
 	    erts_de_rlock(dep);
 	    cid = dep->cid;
-	    if (cid != dsdp->cid
-		|| dep->connection_id != dsdp->connection_id
-		|| dep->status & ERTS_DE_SFLG_EXITING) {
+	    if (!(dep->status & (ERTS_DE_SFLG_PENDING | ERTS_DE_SFLG_CONNECTED))
+                || dep->status & ERTS_DE_SFLG_EXITING
+                || dep->connection_id != dsdp->connection_id) {
 		/* Not the same connection as when we started; drop message... */
 		erts_de_runlock(dep);
 		free_dist_obuf(ctx->obuf);
@@ -2037,8 +2088,13 @@ erts_dsig_send(ErtsDSigData *dsdp, struct erts_dsig_send_context* ctx)
 		}
 
 		erts_mtx_unlock(&dep->qlock);
-                if (is_internal_port(dep->cid))
-                    erts_schedule_dist_command(NULL, dep);
+		if (!(dep->status & ERTS_DE_SFLG_PENDING)) {
+                    if (is_internal_port(dep->cid))
+                        erts_schedule_dist_command(NULL, dep);
+                }
+                else {
+                    notify_proc = NIL;
+                }
 		erts_de_runlock(dep);
                 if (is_internal_pid(notify_proc))
                     notify_dist_data(ctx->c_p, notify_proc);
@@ -2203,7 +2259,6 @@ dist_port_commandv(Port *prt, ErtsDistOutputBuf *obuf)
 #endif
 
 #define ERTS_PORT_REDS_DIST_CMD_START 5
-#define ERTS_PORT_REDS_DIST_CMD_FINALIZE 3
 #define ERTS_PORT_REDS_DIST_CMD_EXIT 200
 #define ERTS_PORT_REDS_DIST_CMD_RESUMED 5
 #define ERTS_PORT_REDS_DIST_CMD_DATA(SZ) \
@@ -2212,9 +2267,9 @@ dist_port_commandv(Port *prt, ErtsDistOutputBuf *obuf)
    : ((((Sint) (SZ)) >> 10) & ((Sint) ERTS_PORT_REDS_MASK__)))
 
 int
-erts_dist_command(Port *prt, int reds_limit)
+erts_dist_command(Port *prt, int initial_reds)
 {
-    Sint reds = ERTS_PORT_REDS_DIST_CMD_START;
+    Sint reds = initial_reds - ERTS_PORT_REDS_DIST_CMD_START;
     Uint32 status;
     Uint32 flags;
     Sint qsize, obufsize = 0;
@@ -2236,9 +2291,12 @@ erts_dist_command(Port *prt, int reds_limit)
 
     if (status & ERTS_DE_SFLG_EXITING) {
 	erts_deliver_port_exit(prt, prt->common.id, am_killed, 0, 1);
-	return reds + ERTS_PORT_REDS_DIST_CMD_EXIT;
+        reds -= ERTS_PORT_REDS_DIST_CMD_EXIT;
+	return initial_reds - reds;
     }
 
+    ASSERT(!(status & ERTS_DE_SFLG_PENDING));
+
     ASSERT(send);
 
     /*
@@ -2263,7 +2321,7 @@ erts_dist_command(Port *prt, int reds_limit)
 
     sched_flags = erts_atomic32_read_nob(&prt->sched.flags);
 
-    if (reds > reds_limit)
+    if (reds < 0)
 	goto preempted;
 
     if (!(sched_flags & ERTS_PTS_FLG_BUSY_PORT) && foq.first) {
@@ -2278,13 +2336,13 @@ erts_dist_command(Port *prt, int reds_limit)
             erts_fprintf(stderr, ">> ");
             bw(foq.first->extp, size);
 #endif
-            reds += ERTS_PORT_REDS_DIST_CMD_DATA(size);
-            fob = foq.first;
-            obufsize += size_obuf(fob);
-            foq.first = foq.first->next;
-            free_dist_obuf(fob);
+	    reds -= ERTS_PORT_REDS_DIST_CMD_DATA(size);
+	    fob = foq.first;
+	    obufsize += size_obuf(fob);
+	    foq.first = foq.first->next;
+	    free_dist_obuf(fob);
 	    sched_flags = erts_atomic32_read_nob(&prt->sched.flags);
-	    preempt = reds > reds_limit || (sched_flags & ERTS_PTS_FLG_EXIT);
+	    preempt = reds < 0 || (sched_flags & ERTS_PTS_FLG_EXIT);
 	    if (sched_flags & ERTS_PTS_FLG_BUSY_PORT)
 		break;
 	} while (foq.first && !preempt);
@@ -2297,81 +2355,71 @@ erts_dist_command(Port *prt, int reds_limit)
     if (sched_flags & ERTS_PTS_FLG_BUSY_PORT) {
 	if (oq.first) {
 	    ErtsDistOutputBuf *ob;
-	    int preempt;
+            ErtsDistOutputBuf *last_finalized = NULL;
 	finalize_only:
-	    preempt = 0;
 	    ob = oq.first;
 	    ASSERT(ob);
 	    do {
-		ob->extp = erts_encode_ext_dist_header_finalize(ob->extp,
-								dep->cache,
-								flags);
-		if (!(flags & DFLAG_DIST_HDR_ATOM_CACHE))
-		    *--ob->extp = PASS_THROUGH; /* Old node; 'pass through'
-						   needed */
-		ASSERT(&ob->data[0] <= ob->extp && ob->extp < ob->ext_endp);
-		reds += ERTS_PORT_REDS_DIST_CMD_FINALIZE;
-		preempt = reds > reds_limit;
-		if (preempt)
-		    break;
-		ob = ob->next;
+		reds = erts_encode_ext_dist_header_finalize(ob, dep, flags, reds);
+                if (reds < 0)
+                    break;
+                last_finalized  = ob;
+                ob = ob->next;
 	    } while (ob);
-	    /*
-	     * At least one buffer was finalized; if we got preempted,
-	     * ob points to the last buffer that we finalized.
-	     */
-	    if (foq.last)
-		foq.last->next = oq.first;
-	    else
-		foq.first = oq.first;
-	    if (!preempt) {
-		/* All buffers finalized */
-		foq.last = oq.last;
-		oq.first = oq.last = NULL;
-	    }
-	    else {
-		/* Not all buffers finalized; split oq. */
-		foq.last = ob;
-		oq.first = ob->next;
-		if (oq.first)
-		    ob->next = NULL;
-		else
-		    oq.last = NULL;
-	    }
-	    if (preempt)
-		goto preempted;
+            if (last_finalized) {
+                /*
+                 * At least one buffer was finalized; if we got preempted,
+                 * ob points to the next buffer to continue finalize.
+                 */
+                if (foq.last)
+                    foq.last->next = oq.first;
+                else
+                    foq.first = oq.first;
+                foq.last = last_finalized;
+                if (!ob) {
+                    /* All buffers finalized */
+                    ASSERT(foq.last == oq.last);
+                    ASSERT(foq.last->next == NULL);
+                    oq.first = oq.last = NULL;
+                }
+                else {
+                    /* Not all buffers finalized; split oq. */
+                    ASSERT(foq.last->next == ob);
+                    foq.last->next = NULL;
+                    oq.first = ob;
+                }
+            }
+            if (reds <= 0)
+                goto preempted;
 	}
     }
     else {
         int de_busy;
 	int preempt = 0;
 	while (oq.first && !preempt) {
-            ErtsDistOutputBuf *fob;
-            Uint size;
-            oq.first->extp
-                = erts_encode_ext_dist_header_finalize(oq.first->extp,
-                                                       dep->cache,
-                                                       flags);
-            reds += ERTS_PORT_REDS_DIST_CMD_FINALIZE;
-            if (!(flags & DFLAG_DIST_HDR_ATOM_CACHE))
-                *--oq.first->extp = PASS_THROUGH; /* Old node; 'pass through'
-                                                     needed */
-            ASSERT(&oq.first->data[0] <= oq.first->extp
-                   && oq.first->extp < oq.first->ext_endp);
-            size = (*send)(prt, oq.first);
+	    ErtsDistOutputBuf *fob;
+	    Uint size;
+            reds = erts_encode_ext_dist_header_finalize(oq.first, dep, flags, reds);
+            if (reds < 0) {
+                preempt = 1;
+                break;
+            }
+	    ASSERT(&oq.first->data[0] <= oq.first->extp
+		   && oq.first->extp <= oq.first->ext_endp);
+	    size = (*send)(prt, oq.first);
             erts_atomic64_inc_nob(&dep->out);
-            esdp->io.out += (Uint64) size;
+	    esdp->io.out += (Uint64) size;
 #ifdef ERTS_RAW_DIST_MSG_DBG
             erts_fprintf(stderr, ">> ");
             bw(oq.first->extp, size);
 #endif
-            reds += ERTS_PORT_REDS_DIST_CMD_DATA(size);
-            fob = oq.first;
-            obufsize += size_obuf(fob);
-            oq.first = oq.first->next;
-            free_dist_obuf(fob);
+	    reds -= ERTS_PORT_REDS_DIST_CMD_DATA(size);
+	    fob = oq.first;
+	    obufsize += size_obuf(fob);
+	    oq.first = oq.first->next;
+	    free_dist_obuf(fob);
 	    sched_flags = erts_atomic32_read_nob(&prt->sched.flags);
-	    preempt = reds > reds_limit || (sched_flags & ERTS_PTS_FLG_EXIT);
+	    preempt = reds <= 0 || (sched_flags & ERTS_PTS_FLG_EXIT);
 	    if ((sched_flags & ERTS_PTS_FLG_BUSY_PORT) && oq.first && !preempt)
 		goto finalize_only;
 	}
@@ -2411,7 +2459,7 @@ erts_dist_command(Port *prt, int reds_limit)
 	    erts_mtx_unlock(&dep->qlock);
 
 	    resumed = erts_resume_processes(suspendees);
-	    reds += resumed*ERTS_PORT_REDS_DIST_CMD_RESUMED;
+	    reds -= resumed*ERTS_PORT_REDS_DIST_CMD_RESUMED;
 	}
 	else
 	    erts_mtx_unlock(&dep->qlock);
@@ -2434,8 +2482,7 @@ erts_dist_command(Port *prt, int reds_limit)
 	erts_mtx_unlock(&dep->qlock);
     }
 
-    ASSERT(foq.first || !foq.last);
-    ASSERT(!foq.first || foq.last);
+    ASSERT(!!foq.first == !!foq.last);
     ASSERT(!dep->finalized_out_queue.first);
     ASSERT(!dep->finalized_out_queue.last);
 
@@ -2445,10 +2492,10 @@ erts_dist_command(Port *prt, int reds_limit)
     }
 
      /* Avoid wrapping reduction counter... */
-    if (reds > INT_MAX/2)
-	reds = INT_MAX/2;
+    if (reds < INT_MIN/2)
+	reds = INT_MIN/2;
 
-    return reds;
+    return initial_reds - reds;
 
  preempted:
     /*
@@ -2456,8 +2503,7 @@ erts_dist_command(Port *prt, int reds_limit)
      * since last call to driver.
      */
 
-    ASSERT(oq.first || !oq.last);
-    ASSERT(!oq.first || oq.last);
+    ASSERT(!!oq.first == !!oq.last);
 
     if (sched_flags & ERTS_PTS_FLG_EXIT) {
 	/*
@@ -2481,12 +2527,6 @@ erts_dist_command(Port *prt, int reds_limit)
 
 	foq.first = NULL;
 	foq.last = NULL;
-
-#ifdef DEBUG
-	erts_mtx_lock(&dep->qlock);
-	ASSERT(erts_atomic_read_nob(&dep->qsize) == obufsize);
-	erts_mtx_unlock(&dep->qlock);
-#endif
     }
     else {
 	if (oq.first) {
@@ -2776,7 +2816,8 @@ BIF_RETTYPE
 dist_ctrl_get_data_1(BIF_ALIST_1)
 {
     DistEntry *dep = ERTS_PROC_GET_DIST_ENTRY(BIF_P);
-    int reds = 1;
+    const Sint initial_reds = ERTS_BIF_REDS_LEFT(BIF_P);
+    Sint reds = initial_reds;
     ErtsDistOutputBuf *obuf;
     Eterm *hp;
     ProcBin *pb;
@@ -2807,6 +2848,7 @@ dist_ctrl_get_data_1(BIF_ALIST_1)
     {
         if (!dep->tmp_out_queue.first) {
             ASSERT(!dep->tmp_out_queue.last);
+            ASSERT(!dep->transcode_ctx);
             qsize = erts_atomic_read_acqb(&dep->qsize);
             if (qsize > 0) {
                 erts_mtx_lock(&dep->qlock);
@@ -2824,21 +2866,18 @@ dist_ctrl_get_data_1(BIF_ALIST_1)
             erts_de_runlock(dep);
             BIF_RET(am_none);
         }
-        else {
-            obuf = dep->tmp_out_queue.first;
-            dep->tmp_out_queue.first = obuf->next;
-            if (!obuf->next)
-                dep->tmp_out_queue.last = NULL;
+
+        obuf = dep->tmp_out_queue.first;
+        reds = erts_encode_ext_dist_header_finalize(obuf, dep, dep->flags, reds);
+        if (reds < 0) {
+            erts_de_runlock(dep);
+            ERTS_BIF_YIELD1(bif_export[BIF_dist_ctrl_get_data_1],
+                            BIF_P, BIF_ARG_1);
         }
 
-        obuf->extp = erts_encode_ext_dist_header_finalize(obuf->extp,
-                                                          dep->cache,
-                                                          dep->flags);
-        reds += ERTS_PORT_REDS_DIST_CMD_FINALIZE;
-        if (!(dep->flags & DFLAG_DIST_HDR_ATOM_CACHE))
-            *--obuf->extp = PASS_THROUGH; /* 'pass through' needed */
-        ASSERT(&obuf->data[0] <= obuf->extp
-               && obuf->extp < obuf->ext_endp);
+        dep->tmp_out_queue.first = obuf->next;
+        if (!obuf->next)
+            dep->tmp_out_queue.last = NULL;
     }
 
     erts_atomic64_inc_nob(&dep->out);
@@ -2866,11 +2905,11 @@ dist_ctrl_get_data_1(BIF_ALIST_1)
         erts_mtx_unlock(&dep->qlock);
         if (resume_procs) {
             int resumed = erts_resume_processes(resume_procs);
-            reds += resumed*ERTS_PORT_REDS_DIST_CMD_RESUMED;
+            reds -= resumed*ERTS_PORT_REDS_DIST_CMD_RESUMED;
         }
     }
 
-    BIF_RET2(make_binary(pb), reds);
+    BIF_RET2(make_binary(pb), (initial_reds - reds));
 }
 
 void
@@ -2892,24 +2931,31 @@ erts_dist_port_not_busy(Port *prt)
     erts_schedule_dist_command(prt, NULL);
 }
 
+static void kill_connection(DistEntry *dep)
+{
+    ERTS_LC_ASSERT(erts_lc_is_de_rwlocked(dep));
+    ASSERT(dep->status == ERTS_DE_SFLG_CONNECTED);
+
+    dep->status |= ERTS_DE_SFLG_EXITING;
+    erts_mtx_lock(&dep->qlock);
+    ASSERT(!(erts_atomic32_read_nob(&dep->qflgs) & ERTS_DE_QFLG_EXIT));
+    erts_atomic32_read_bor_nob(&dep->qflgs, ERTS_DE_QFLG_EXIT);
+    erts_mtx_unlock(&dep->qlock);
+
+    if (is_internal_port(dep->cid))
+        erts_schedule_dist_command(NULL, dep);
+    else if (is_internal_pid(dep->cid))
+        schedule_kill_dist_ctrl_proc(dep->cid);
+}
+
 void
 erts_kill_dist_connection(DistEntry *dep, Uint32 connection_id)
 {
     erts_de_rwlock(dep);
     if (connection_id == dep->connection_id
-	&& !(dep->status & ERTS_DE_SFLG_EXITING)) {
-
-	dep->status |= ERTS_DE_SFLG_EXITING;
-
-	erts_mtx_lock(&dep->qlock);
-	ASSERT(!(erts_atomic32_read_nob(&dep->qflgs) & ERTS_DE_QFLG_EXIT));
-	erts_atomic32_read_bor_nob(&dep->qflgs, ERTS_DE_QFLG_EXIT);
-	erts_mtx_unlock(&dep->qlock);
+        && dep->status == ERTS_DE_SFLG_CONNECTED) {
 
-        if (is_internal_port(dep->cid))
-            erts_schedule_dist_command(NULL, dep);
-        else if (is_internal_pid(dep->cid))
-            schedule_kill_dist_ctrl_proc(dep->cid);
+        kill_connection(dep);
     }
     erts_de_rwunlock(dep);
 }
@@ -3069,6 +3115,10 @@ int distribution_info(fmtfn_t to, void *arg)	/* Called by break handler */
       info_dist_entry(to, arg, dep, 0, 1);
     }
 
+    for (dep = erts_pending_dist_entries; dep; dep = dep->next) {
+        info_dist_entry(to, arg, dep, 0, 0);
+    }
+
     for (dep = erts_not_connected_dist_entries; dep; dep = dep->next) {
         if (dep != erts_this_dist_entry) {
             info_dist_entry(to, arg, dep, 0, 0);
@@ -3091,7 +3141,6 @@ int distribution_info(fmtfn_t to, void *arg)	/* Called by break handler */
 	    monitor_node  -- turn on/off node monitoring
 
             node controller only:
-            dist_exit/3       -- send exit signals from remote to local process
             dist_link/2       -- link a remote process to a local
             dist_unlink/2     -- unlink a remote from a local
 ****************************************************************************/
@@ -3101,15 +3150,6 @@ int distribution_info(fmtfn_t to, void *arg)	/* Called by break handler */
 /**********************************************************************
  ** Set the node name of current node fail if node already is set.
  ** setnode(name@host, Creation)
- ** loads functions pointer to trap_functions from module erlang.
- **    erlang:dsend/2
- **    erlang:dlink/1
- **    erlang:dunlink/1
- **    erlang:dmonitor_node/3
- **    erlang:dgroup_leader/2
- **    erlang:dexit/2
- **  -- are these needed ?
- **    dexit/1
  ***********************************************************************/
 
 BIF_RETTYPE setnode_2(BIF_ALIST_2)
@@ -3133,15 +3173,8 @@ BIF_RETTYPE setnode_2(BIF_ALIST_2)
 	goto error;
 
     /* Check that all trap functions are defined !! */
-    if (dsend2_trap->addressv[0] == NULL ||
-	dsend3_trap->addressv[0] == NULL ||
-	/*	dsend_nosuspend_trap->address == NULL ||*/
-	dlink_trap->addressv[0] == NULL ||
-	dunlink_trap->addressv[0] == NULL ||
-	dmonitor_node_trap->addressv[0] == NULL ||
-	dgroup_leader_trap->addressv[0] == NULL ||
-	dmonitor_p_trap->addressv[0] == NULL ||
-	dexit_trap->addressv[0] == NULL) {
+    if (dmonitor_node_trap->addressv[0] == NULL ||
+	dmonitor_p_trap->addressv[0] == NULL) {
 	goto error;
     }
 
@@ -3218,6 +3251,8 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
     ErtsProcLocks proc_unlock = 0;
     Process *proc;
     Port *pp = NULL;
+    Eterm notify_proc;
+    erts_aint32_t qflgs;
 
     /*
      * Check and pick out arguments
@@ -3245,21 +3280,25 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
     if (!is_atom(ic) || !is_atom(oc))
 	goto badarg;
 
-    /* DFLAG_EXTENDED_REFERENCES is compulsory from R9 and forward */
-    if (!(DFLAG_EXTENDED_REFERENCES & flags)) {
+    if (~flags & DFLAG_DIST_MANDATORY) {
 	erts_dsprintf_buf_t *dsbufp = erts_create_logger_dsbuf();
 	erts_dsprintf(dsbufp, "%T", BIF_P->common.id);
 	if (BIF_P->common.u.alive.reg)
 	    erts_dsprintf(dsbufp, " (%T)", BIF_P->common.u.alive.reg->name);
 	erts_dsprintf(dsbufp,
 		      " attempted to enable connection to node %T "
-		      "which is not able to handle extended references.\n",
+		      "which does not support all mandatory capabilities.\n",
 		      BIF_ARG_1);
 	erts_send_error_to_logger(BIF_P->group_leader, dsbufp);
 	goto badarg;
     }
 
     /*
+     * ToDo: Should we not pass connection_id as well
+     *       to make sure it's the right connection we commit.
+     */
+
+    /*
      * Arguments seem to be in order.
      */
 
@@ -3302,6 +3341,23 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
             goto badarg;
         }
 
+        if (dep->status & ERTS_DE_SFLG_EXITING) {
+            /* Suspend on dist entry waiting for the exit to finish */
+            ErtsProcList *plp = erts_proclist_create(BIF_P);
+            plp->next = NULL;
+            erts_suspend(BIF_P, ERTS_PROC_LOCK_MAIN, NULL);
+            erts_mtx_lock(&dep->qlock);
+            erts_proclist_store_last(&dep->suspended, plp);
+            erts_mtx_unlock(&dep->qlock);
+            goto yield;
+        }
+        if (dep->status != ERTS_DE_SFLG_PENDING) {
+            if (dep->status == 0)
+                erts_set_dist_entry_pending(dep);
+            else
+                goto badarg;
+        }
+
         if (is_not_nil(dep->cid))
             goto badarg;
 
@@ -3344,8 +3400,12 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
             erts_mtx_unlock(&dep->qlock);
             goto yield;
         }
-
-        ASSERT(!(dep->status & ERTS_DE_SFLG_EXITING));
+        if (dep->status != ERTS_DE_SFLG_PENDING) {
+            if (dep->status == 0)
+                erts_set_dist_entry_pending(dep);
+            else
+                goto badarg;
+        }
 
         if (pp->dist_entry || is_not_nil(dep->cid))
             goto badarg;
@@ -3376,7 +3436,8 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
     dep->creation = 0;
 
 #ifdef DEBUG
-    ASSERT(erts_atomic_read_nob(&dep->qsize) == 0);
+    ASSERT(erts_atomic_read_nob(&dep->qsize) == 0 
+           || (dep->status & ERTS_DE_SFLG_PENDING));
 #endif
 
     if (flags & DFLAG_DIST_HDR_ATOM_CACHE)
@@ -3384,7 +3445,26 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
 
     erts_set_dist_entry_connected(dep, BIF_ARG_2, flags);
 
+    notify_proc = NIL;
+    if (erts_atomic_read_nob(&dep->qsize)) {
+        if (is_internal_port(dep->cid)) {
+            erts_schedule_dist_command(NULL, dep);
+        }
+        else {
+            qflgs = erts_atomic32_read_nob(&dep->qflgs);
+            if (qflgs & ERTS_DE_QFLG_REQ_INFO) {
+                qflgs = erts_atomic32_read_band_mb(&dep->qflgs,
+                                                   ~ERTS_DE_QFLG_REQ_INFO);
+                if (qflgs & ERTS_DE_QFLG_REQ_INFO) {
+                    notify_proc = dep->cid;
+                    ASSERT(is_internal_pid(notify_proc));
+                }
+            }
+        }
+    }
     erts_de_rwunlock(dep);
+    if (is_internal_pid(notify_proc))
+        notify_dist_data(BIF_P, notify_proc);
 
     ERTS_BIF_PREP_RET(ret, erts_make_dhandle(BIF_P, dep));
 
@@ -3426,79 +3506,168 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
     goto done;
 }
 
+BIF_RETTYPE erts_internal_new_connection_1(BIF_ALIST_1)
+{
+    DistEntry* dep;
+    Uint32 conn_id;
+    Eterm* hp;
+    Eterm dhandle;
+
+    if (is_not_atom(BIF_ARG_1)) {
+	BIF_ERROR(BIF_P, BADARG);
+    }
+    dep = erts_find_or_insert_dist_entry(BIF_ARG_1);
 
-/**********************************************************************/
-/* dist_exit(Local, Term, Remote) -> Bool */
+    if (dep == erts_this_dist_entry) {
+        erts_deref_dist_entry(dep);
+        BIF_ERROR(BIF_P, BADARG);
+    }
+
+    erts_de_rwlock(dep);
+
+    if (ERTS_DE_IS_CONNECTED(dep) || dep->status & ERTS_DE_SFLG_PENDING)
+	conn_id = dep->connection_id;
+    else if (dep->status == 0) {
+        erts_set_dist_entry_pending(dep);
+	conn_id = dep->connection_id;
+    }
+    else {
+        ASSERT(dep->status & ERTS_DE_SFLG_EXITING);
+        conn_id = (dep->connection_id + 1) & ERTS_DIST_CON_ID_MASK;
+    }
+    erts_de_rwunlock(dep);
+    hp = HAlloc(BIF_P, 3 + ERTS_MAGIC_REF_THING_SIZE);
+    dhandle = erts_build_dhandle(&hp, &BIF_P->off_heap, dep);
+    erts_deref_dist_entry(dep);
+    BIF_RET(TUPLE2(hp, make_small(conn_id), dhandle));
+}
 
-BIF_RETTYPE dist_exit_3(BIF_ALIST_3)
+static Sint abort_connection(DistEntry* dep, Uint32 conn_id)
 {
-    Eterm local;
-    Eterm remote;
-    DistEntry *rdep;
+    erts_de_rwlock(dep);
 
-    local = BIF_ARG_1;
-    remote = BIF_ARG_3;
+    if (dep->connection_id != conn_id)
+        ;
+    else if (dep->status == ERTS_DE_SFLG_CONNECTED) {
+        kill_connection(dep);
+    }
+    else if (dep->status == ERTS_DE_SFLG_PENDING) {
+        NetExitsContext nec = {dep};
+        ErtsLink *nlinks;
+        ErtsLink *node_links;
+        ErtsMonitor *monitors;
+        ErtsAtomCache *cache;
+        ErtsDistOutputBuf *obuf;
+        ErtsProcList *resume_procs;
+        Sint reds = 0;
+
+	ASSERT(is_nil(dep->cid));
 
-    /* Check that remote is a remote process */
-    if (is_not_external_pid(remote))
-	goto error;
+	erts_de_links_lock(dep);
+	monitors	= dep->monitors;
+	nlinks		= dep->nlinks;
+	node_links	= dep->node_links;
+	dep->monitors	= NULL;
+	dep->nlinks	= NULL;
+	dep->node_links	= NULL;
+	erts_de_links_unlock(dep);
 
-    rdep = external_dist_entry(remote);
-    
-    if(rdep == erts_this_dist_entry)
-	goto error;
+	cache = dep->cache;
+	dep->cache = NULL;
+	erts_mtx_lock(&dep->qlock);
+        obuf = dep->out_queue.first;
+        dep->out_queue.first = NULL;
+        dep->out_queue.last = NULL;
+        ASSERT(!dep->tmp_out_queue.first);
+        ASSERT(!dep->finalized_out_queue.first);
+        resume_procs = get_suspended_on_de(dep, ERTS_DE_QFLGS_ALL);
+	erts_mtx_unlock(&dep->qlock);
+	erts_atomic_set_nob(&dep->dist_cmd_scheduled, 0);
+	dep->send = NULL;
 
-    /* Check that local is local */
-    if (is_internal_pid(local)) {
-	Process *lp;
-	ErtsProcLocks lp_locks;
-	if (BIF_P->common.id == local) {
-	    lp_locks = ERTS_PROC_LOCKS_ALL;
-	    lp = BIF_P;
-	    erts_proc_lock(BIF_P, ERTS_PROC_LOCKS_ALL_MINOR);
-	}
-	else {
-	    lp_locks = ERTS_PROC_LOCKS_XSIG_SEND;
-	    lp = erts_pid2proc(BIF_P, ERTS_PROC_LOCK_MAIN,
-			       local, lp_locks);
-	    if (!lp) {
-		BIF_RET(am_true); /* ignore */
-	    }
-	}
-	
-	(void) erts_send_exit_signal(BIF_P,
-				     remote,
-				     lp,
-				     &lp_locks,
-				     BIF_ARG_2,
-				     NIL,
-				     NULL,
-				     0);
-	if (lp == BIF_P)
-	    lp_locks &= ~ERTS_PROC_LOCK_MAIN;
-	erts_proc_unlock(lp, lp_locks);
-	if (lp == BIF_P) {
-	    erts_aint32_t state = erts_atomic32_read_acqb(&BIF_P->state);
-	    /*
-	     * We may have exited current process and may have to take action.
-	     */
-	    if (state & (ERTS_PSFLG_EXITING|ERTS_PSFLG_PENDING_EXIT)) {
-		if (state & ERTS_PSFLG_PENDING_EXIT)
-		    erts_handle_pending_exit(BIF_P, ERTS_PROC_LOCK_MAIN);
-		ERTS_BIF_EXITED(BIF_P);
-	    }
-	}
+        erts_set_dist_entry_not_connected(dep);
+
+	erts_de_rwunlock(dep);
+
+	erts_sweep_monitors(monitors, &doit_monitor_net_exits, &nec);
+	erts_sweep_links(nlinks, &doit_link_net_exits, &nec);
+	erts_sweep_links(node_links, &doit_node_link_net_exits, &nec);
+
+        if (resume_procs) {
+            int resumed = erts_resume_processes(resume_procs);
+            reds += resumed*ERTS_PORT_REDS_DIST_CMD_RESUMED;
+        }
+
+	delete_cache(cache);
+	free_de_out_queues(dep, obuf);
+        return reds;
     }
-    else if (is_external_pid(local)
-	     && external_dist_entry(local) == erts_this_dist_entry) {
-	BIF_RET(am_true); /* ignore */
+    erts_de_rwunlock(dep);
+    return 0;
+}
+
+BIF_RETTYPE erts_internal_abort_connection_2(BIF_ALIST_2)
+{
+    DistEntry* dep;
+    Eterm* tp;
+
+    if (is_not_atom(BIF_ARG_1) || is_not_tuple_arity(BIF_ARG_2, 2)) {
+	BIF_ERROR(BIF_P, BADARG);
+    }
+    tp = tuple_val(BIF_ARG_2);
+    dep = erts_dhandle_to_dist_entry(tp[2]);
+    if (is_not_small(tp[1]) || dep != erts_find_dist_entry(BIF_ARG_1)
+        || dep == erts_this_dist_entry) {
+        BIF_ERROR(BIF_P, BADARG);
+    }
+
+    if (dep) {
+        Sint reds = abort_connection(dep, unsigned_val(tp[1]));
+        BUMP_REDS(BIF_P, reds);
     }
-    else
-	goto error;
     BIF_RET(am_true);
+}
 
- error:
-    BIF_ERROR(BIF_P, BADARG);
+int erts_auto_connect(DistEntry* dep, Process *proc, ErtsProcLocks proc_locks)
+{
+    erts_de_rwlock(dep);
+    if (dep->status != 0) {
+        erts_de_rwunlock(dep);
+    }
+    else {
+        Process* net_kernel;
+        ErtsProcLocks nk_locks = ERTS_PROC_LOCK_MSGQ;
+        Eterm *hp;
+        ErlOffHeap *ohp;
+        ErtsMessage *mp;
+        Eterm msg, dhandle;
+        Uint32 conn_id;
+
+        erts_set_dist_entry_pending(dep);
+        conn_id = dep->connection_id;
+        erts_de_rwunlock(dep);
+
+        net_kernel = erts_whereis_process(proc, proc_locks,
+                                          am_net_kernel, nk_locks, 0);
+        if (!net_kernel) {
+            abort_connection(dep, conn_id);
+            return 0;
+        }
+
+        /*
+         * Send {auto_connect, Node, ConnId, DHandle} to net_kernel
+         */
+        mp = erts_alloc_message_heap(net_kernel, &nk_locks,
+                                     5 + ERTS_MAGIC_REF_THING_SIZE,
+                                     &hp, &ohp);
+        dhandle = erts_build_dhandle(&hp, ohp, dep);
+        msg = TUPLE4(hp, am_auto_connect, dep->sysname, make_small(conn_id),
+                     dhandle);
+        erts_queue_message(net_kernel, nk_locks, mp, msg, proc->common.id);
+        erts_proc_unlock(net_kernel, nk_locks);
+    }
+
+    return 1;
 }
 
 /**********************************************************************/
@@ -3574,9 +3743,11 @@ BIF_RETTYPE nodes_1(BIF_ALIST_1)
 
     ASSERT(erts_no_of_not_connected_dist_entries > 0);
     ASSERT(erts_no_of_hidden_dist_entries >= 0);
+    ASSERT(erts_no_of_pending_dist_entries >= 0);
     ASSERT(erts_no_of_visible_dist_entries >= 0);
     if(not_connected)
-      length += (erts_no_of_not_connected_dist_entries - 1);
+      length += ((erts_no_of_not_connected_dist_entries - 1)
+                 + erts_no_of_pending_dist_entries);
     if(hidden)
       length += erts_no_of_hidden_dist_entries;
     if(visible)
@@ -3596,13 +3767,18 @@ BIF_RETTYPE nodes_1(BIF_ALIST_1)
 #ifdef DEBUG
     endp = hp + length*2;
 #endif
-    if(not_connected)
+    if(not_connected) {
       for(dep = erts_not_connected_dist_entries; dep; dep = dep->next) {
           if (dep != erts_this_dist_entry) {
             result = CONS(hp, dep->sysname, result);
             hp += 2;
           }
+        }
+      for(dep = erts_pending_dist_entries; dep; dep = dep->next) {
+          result = CONS(hp, dep->sysname, result);
+          hp += 2;
       }
+    }
     if(hidden)
       for(dep = erts_hidden_dist_entries; dep; dep = dep->next) {
 	result = CONS(hp, dep->sysname, result);
@@ -3647,11 +3823,17 @@ monitor_node(Process* p, Eterm Node, Eterm Bool, Eterm Options)
     DistEntry *dep;
     ErtsLink *lnk;
     Eterm l;
+    int async_connect = 1;
 
     for (l = Options; l != NIL && is_list(l); l = CDR(list_val(l))) {
 	Eterm t = CAR(list_val(l));
-	/* allow_passive_connect the only available option right now */
-	if (t != am_allow_passive_connect) {
+	if (t == am_allow_passive_connect) {
+	    /*
+	     * Handle this horrible feature by falling back on old synchronous
+	     * auto-connect (if needed)
+	     */
+	    async_connect = 0;
+	} else {
 	    BIF_ERROR(p, BADARG);
 	}
     }
@@ -3665,50 +3847,90 @@ monitor_node(Process* p, Eterm Node, Eterm Bool, Eterm Options)
 	 && (Node != erts_this_node->sysname))) {
 	BIF_ERROR(p, BADARG);
     }
-    dep = erts_sysname_to_connected_dist_entry(Node);
-    if (!dep) {
-    do_trap:
-	BIF_TRAP3(dmonitor_node_trap, p, Node, Bool, Options);
-    }
-    if (dep == erts_this_dist_entry)
-	goto done;
-
-    erts_proc_lock(p, ERTS_PROC_LOCK_LINK);
-    erts_de_rlock(dep);
-    if (ERTS_DE_IS_NOT_CONNECTED(dep)) {
-	erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
-	erts_de_runlock(dep);
-	goto do_trap;
-    }
-    erts_de_links_lock(dep);
-    erts_de_runlock(dep);
 
     if (Bool == am_true) {
-	ASSERT(dep->cid != NIL);
-	lnk = erts_add_or_lookup_link(&(dep->node_links), LINK_NODE, 
-				      p->common.id);
-	++ERTS_LINK_REFC(lnk);
-	lnk = erts_add_or_lookup_link(&ERTS_P_LINKS(p), LINK_NODE, Node);
-	++ERTS_LINK_REFC(lnk);
-    }
-    else  {
-	lnk = erts_lookup_link(dep->node_links, p->common.id);
-	if (lnk != NULL) {
-	    if ((--ERTS_LINK_REFC(lnk)) == 0) {
-		erts_destroy_link(erts_remove_link(&(dep->node_links), 
-						   p->common.id));
-	    }
-	}
-	lnk = erts_lookup_link(ERTS_P_LINKS(p), Node);
-	if (lnk != NULL) {
-	    if ((--ERTS_LINK_REFC(lnk)) == 0) {
-		erts_destroy_link(erts_remove_link(&ERTS_P_LINKS(p),
-						   Node));
+        ErtsDSigData dsd;
+        dsd.node = Node;
+        dep = erts_find_or_insert_dist_entry(Node);
+        if (dep == erts_this_dist_entry)
+            goto done;
+
+        erts_proc_lock(p, ERTS_PROC_LOCK_LINK);
+
+        switch (erts_dsig_prepare(&dsd, dep, p,
+                                  (ERTS_PROC_LOCK_MAIN | ERTS_PROC_LOCK_LINK),
+                                  ERTS_DSP_RLOCK, 0, async_connect)) {
+        case ERTS_DSIG_PREP_NOT_ALIVE:
+	case ERTS_DSIG_PREP_NOT_CONNECTED:
+	    /* Trap to either send 'nodedown' or do passive connection attempt */
+	trap:
+            erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
+	    erts_deref_dist_entry(dep);
+            BIF_TRAP3(dmonitor_node_trap, p, Node, Bool, Options);
+	case ERTS_DSIG_PREP_PENDING:
+	    if (!async_connect) {
+		/*
+		 * Pending connection may fail, so we must trap
+		 * to ensure passive connection attempt
+		 */
+		erts_de_runlock(dep);
+		goto trap;
 	    }
-	}
+	    /*fall through*/
+        case ERTS_DSIG_PREP_CONNECTED:
+            erts_de_links_lock(dep);
+            erts_de_runlock(dep);
+            lnk = erts_add_or_lookup_link(&(dep->node_links), LINK_NODE,
+                                          p->common.id);
+            ++ERTS_LINK_REFC(lnk);
+            lnk = erts_add_or_lookup_link(&ERTS_P_LINKS(p), LINK_NODE, Node);
+            ++ERTS_LINK_REFC(lnk);
+            erts_de_links_unlock(dep);
+            break;
+        default:
+            ERTS_ASSERT(! "Invalid dsig prepare result");
+        }
+        erts_deref_dist_entry(dep);
+    }
+    else { /* Bool == false */
+        dep = erts_sysname_to_connected_dist_entry(Node);
+        if (!dep) {
+	    /*
+	     * Before OTP-21 this case triggered auto-connect
+	     * and a 'nodedown' message if that failed.
+	     * Now it's a simple no-op which feels more reasonable.
+	     */
+            BIF_RET(am_true);
+        }
+        if (dep == erts_this_dist_entry)
+            goto done;
+
+        erts_proc_lock(p, ERTS_PROC_LOCK_LINK);
+        erts_de_rlock(dep);
+        if (!(dep->status & (ERTS_DE_SFLG_PENDING | ERTS_DE_SFLG_CONNECTED))) {
+            erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
+            erts_de_runlock(dep);
+            goto done;
+        }
+        erts_de_links_lock(dep);
+        erts_de_runlock(dep);
+        lnk = erts_lookup_link(dep->node_links, p->common.id);
+        if (lnk != NULL) {
+            if ((--ERTS_LINK_REFC(lnk)) == 0) {
+                erts_destroy_link(erts_remove_link(&(dep->node_links),
+                                                   p->common.id));
+            }
+        }
+        lnk = erts_lookup_link(ERTS_P_LINKS(p), Node);
+        if (lnk != NULL) {
+            if ((--ERTS_LINK_REFC(lnk)) == 0) {
+                erts_destroy_link(erts_remove_link(&ERTS_P_LINKS(p),
+                                                   Node));
+            }
+        }
+        erts_de_links_unlock(dep);
     }
 
-    erts_de_links_unlock(dep);
     erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
 
  done:
diff --git a/erts/emulator/beam/dist.h b/erts/emulator/beam/dist.h
index d4765c50b8..ea4697815f 100644
--- a/erts/emulator/beam/dist.h
+++ b/erts/emulator/beam/dist.h
@@ -45,6 +45,20 @@
 #define DFLAG_MAP_TAG             0x20000
 #define DFLAG_BIG_CREATION        0x40000
 #define DFLAG_SEND_SENDER         0x80000
+#define DFLAG_NO_MAGIC            0x100000
+
+/* Mandatory flags for distribution (sync with dist_util.erl) */
+#define DFLAG_DIST_MANDATORY (DFLAG_EXTENDED_REFERENCES         \
+                              | DFLAG_EXTENDED_PIDS_PORTS       \
+			      | DFLAG_UTF8_ATOMS                \
+			      | DFLAG_NEW_FUN_TAGS)
+
+/* Additional optimistic flags when encoding toward pending connection */
+#define DFLAG_DIST_HOPEFULLY (DFLAG_NO_MAGIC                    \
+                              | DFLAG_EXPORT_PTR_TAG            \
+                              | DFLAG_BIT_BINARIES              \
+                              | DFLAG_DIST_MONITOR              \
+                              | DFLAG_DIST_MONITOR_NAME)
 
 /* All flags that should be enabled when term_to_binary/1 is used. */
 #define TERM_TO_BINARY_DFLAGS (DFLAG_EXTENDED_REFERENCES	\
@@ -79,25 +93,19 @@
 #define DOP_SEND_SENDER_TT      23
 
 /* distribution trap functions */
-extern Export* dsend2_trap;
-extern Export* dsend3_trap;
-extern Export* dlink_trap;
-extern Export* dunlink_trap;
 extern Export* dmonitor_node_trap;
-extern Export* dgroup_leader_trap;
-extern Export* dexit_trap;
 extern Export* dmonitor_p_trap;
 
 typedef enum {
     ERTS_DSP_NO_LOCK,
-    ERTS_DSP_RLOCK,
-    ERTS_DSP_RWLOCK
+    ERTS_DSP_RLOCK
 } ErtsDSigPrepLock;
 
 
 typedef struct {
     Process *proc;
     DistEntry *dep;
+    Eterm node;   /* used if dep == NULL */
     Eterm cid;
     Eterm connection_id;
     int no_suspend;
@@ -117,14 +125,10 @@ extern int erts_is_alive;
 
 /*
  * erts_dsig_prepare() prepares a send of a distributed signal.
- * One of the values defined below are returned. If the returned
- * value is another than ERTS_DSIG_PREP_CONNECTED, the
- * distributed signal cannot be sent before appropriate actions
- * have been taken. Appropriate actions would typically be setting
- * up the connection.
+ * One of the values defined below are returned.
  */
 
-/* Connected; signal can be sent. */
+/* Connected; signals can be enqueued and sent. */
 #define ERTS_DSIG_PREP_CONNECTED	0
 /* Not connected; connection needs to be set up. */
 #define ERTS_DSIG_PREP_NOT_CONNECTED	1
@@ -132,43 +136,80 @@ extern int erts_is_alive;
 #define ERTS_DSIG_PREP_WOULD_SUSPEND	2
 /* System not alive (distributed) */
 #define ERTS_DSIG_PREP_NOT_ALIVE	3
+/* Pending connection; signals can be enqueued */
+#define ERTS_DSIG_PREP_PENDING	        4
 
 ERTS_GLB_INLINE int erts_dsig_prepare(ErtsDSigData *,
-				      DistEntry *,
+				      DistEntry*,
 				      Process *,
+                                      ErtsProcLocks,
 				      ErtsDSigPrepLock,
+				      int,
 				      int);
 
 ERTS_GLB_INLINE
 void erts_schedule_dist_command(Port *, DistEntry *);
 
+int erts_auto_connect(DistEntry* dep, Process *proc, ErtsProcLocks proc_locks);
+
 #if ERTS_GLB_INLINE_INCL_FUNC_DEF
 
 ERTS_GLB_INLINE int 
 erts_dsig_prepare(ErtsDSigData *dsdp,
 		  DistEntry *dep,
 		  Process *proc,
+                  ErtsProcLocks proc_locks,
 		  ErtsDSigPrepLock dspl,
-		  int no_suspend)
+		  int no_suspend,
+		  int connect)
 {
-    int failure;
+    int res;
+
     if (!erts_is_alive)
 	return ERTS_DSIG_PREP_NOT_ALIVE;
-    if (!dep)
-	return ERTS_DSIG_PREP_NOT_CONNECTED;
-    if (dspl == ERTS_DSP_RWLOCK)
-	erts_de_rwlock(dep);
-    else
-	erts_de_rlock(dep);
-    if (ERTS_DE_IS_NOT_CONNECTED(dep)) {
-	failure = ERTS_DSIG_PREP_NOT_CONNECTED;
+    if (!dep) {
+        ASSERT(!connect);
+        return ERTS_DSIG_PREP_NOT_CONNECTED;
+    }
+
+#ifdef ERTS_ENABLE_LOCK_CHECK
+    if (connect) {
+        erts_proc_lc_might_unlock(proc, proc_locks);
+    }
+#endif
+
+retry:
+    erts_de_rlock(dep);
+
+    if (ERTS_DE_IS_CONNECTED(dep)) {
+	res = ERTS_DSIG_PREP_CONNECTED;
+    }
+    else if (dep->status & ERTS_DE_SFLG_PENDING) {
+	res = ERTS_DSIG_PREP_PENDING;
+    }
+    else if (dep->status & ERTS_DE_SFLG_EXITING) {
+	res = ERTS_DSIG_PREP_NOT_CONNECTED;
+	goto fail;
+    }
+    else if (connect) {
+        ASSERT(dep->status == 0);
+        erts_de_runlock(dep);
+        if (!erts_auto_connect(dep, proc, proc_locks)) {
+            return ERTS_DSIG_PREP_NOT_ALIVE;
+        }
+	goto retry;
+    }
+    else {
+        ASSERT(dep->status == 0);
+	res = ERTS_DSIG_PREP_NOT_CONNECTED;
 	goto fail;
     }
+
     if (no_suspend) {
-        if (erts_atomic32_read_acqb(&dep->qflgs) & ERTS_DE_QFLG_BUSY) {
-	    failure = ERTS_DSIG_PREP_WOULD_SUSPEND;
+	if (erts_atomic32_read_acqb(&dep->qflgs) & ERTS_DE_QFLG_BUSY) {
+	    res = ERTS_DSIG_PREP_WOULD_SUSPEND;
 	    goto fail;
-        }
+	}
     }
     dsdp->proc = proc;
     dsdp->dep = dep;
@@ -177,15 +218,11 @@ erts_dsig_prepare(ErtsDSigData *dsdp,
     dsdp->no_suspend = no_suspend;
     if (dspl == ERTS_DSP_NO_LOCK)
 	erts_de_runlock(dep);
-    return ERTS_DSIG_PREP_CONNECTED;
+    return res;
 
  fail:
-    if (dspl == ERTS_DSP_RWLOCK)
-	erts_de_rwunlock(dep);
-    else
-	erts_de_runlock(dep);
-    return failure;
-
+    erts_de_runlock(dep);
+    return res;
 }
 
 ERTS_GLB_INLINE
@@ -332,7 +369,7 @@ struct erts_dsig_send_context {
     Eterm ctl;
     Eterm msg;
     int force_busy;
-    Uint32 pass_through_size;
+    Uint32 max_finalize_prepend;
     Uint data_size, dhdr_ext_size;
     ErtsAtomCacheMap *acmp;
     ErtsDistOutputBuf *obuf;
@@ -346,11 +383,12 @@ struct erts_dsig_send_context {
 
 typedef struct {
     int suspend;
+    int connect;
 
     Eterm ctl_heap[6];
     ErtsDSigData dsd;
-    DistEntry* dep_to_deref;
     DistEntry *dep;
+    int deref_dep;
     struct erts_dsig_send_context dss;
 
     Eterm return_term;
diff --git a/erts/emulator/beam/erl_alloc.types b/erts/emulator/beam/erl_alloc.types
index bf5487d31e..c6cc5c78b3 100644
--- a/erts/emulator/beam/erl_alloc.types
+++ b/erts/emulator/beam/erl_alloc.types
@@ -259,6 +259,9 @@ type	MREF_TAB_BKTS	STANDARD	SYSTEM		magic_ref_table_buckets
 type	MREF_TAB	LONG_LIVED	SYSTEM		magic_ref_table
 type	MINDIRECTION	FIXED_SIZE	SYSTEM		magic_indirection
 type	BINARY_FIND	SHORT_LIVED	PROCESSES	binary_find
+type  	OPEN_PORT_ENV 	TEMPORARY	SYSTEM		open_port_env
+type	CRASH_DUMP	STANDARD	SYSTEM		crash_dump
+type	DIST_TRANSCODE  SHORT_LIVED	SYSTEM		dist_transcode_context
 
 type	THR_Q_EL	STANDARD   	SYSTEM		thr_q_element
 type	THR_Q_EL_SL	FIXED_SIZE	SYSTEM		sl_thr_q_element
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 17c936f041..64639e157b 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -3674,6 +3674,12 @@ BIF_RETTYPE erts_debug_get_internal_state_1(BIF_ALIST_1)
 		Eterm *hp = HAlloc(BIF_P, hsz);
 		BIF_RET(uword_to_big(size, hp));
 	    }
+        } else if (ERTS_IS_ATOM_STR("scheduler_dump", BIF_ARG_1)) {
+#if defined(ERTS_HAVE_TRY_CATCH) && defined(ERTS_SYS_SUSPEND_SIGNAL)
+            BIF_RET(am_true);
+#else
+            BIF_RET(am_false);
+#endif
         }
     }
     else if (is_tuple(BIF_ARG_1)) {
@@ -3824,10 +3830,10 @@ BIF_RETTYPE erts_debug_get_internal_state_1(BIF_ALIST_1)
 		    BIF_RET(res);
 		}
 	    }
-	    else if (ERTS_IS_ATOM_STR("term_to_binary_no_funs", tp[1])) {
-		Uint dflags = (DFLAG_EXTENDED_REFERENCES |
-			       DFLAG_EXTENDED_PIDS_PORTS |
-			       DFLAG_BIT_BINARIES);
+	    else if (ERTS_IS_ATOM_STR("term_to_binary_tuple_fallbacks", tp[1])) {
+		Uint dflags = (TERM_TO_BINARY_DFLAGS
+                               & ~DFLAG_EXPORT_PTR_TAG
+                               & ~DFLAG_BIT_BINARIES);
 		BIF_RET(erts_term_to_binary(BIF_P, tp[2], 0, dflags));
 	    }
 	    else if (ERTS_IS_ATOM_STR("dist_ctrl", tp[1])) {
@@ -4459,7 +4465,7 @@ static Eterm lcnt_build_lock_stats_term(Eterm **hpp, Uint *szp, erts_lcnt_lock_s
 static Eterm lcnt_pretty_print_lock_id(erts_lcnt_lock_info_t *info) {
     Eterm id = info->id;
 
-    if((info->flags & ERTS_LOCK_FLAGS_MASK_TYPE) == ERTS_LOCK_TYPE_PROCLOCK) {
+    if((info->flags & ERTS_LOCK_FLAGS_MASK_TYPE) == ERTS_LOCK_FLAGS_TYPE_PROCLOCK) {
         /* Use registered names as id's for process locks if available. Thread
          * progress is delayed since we may be running on a dirty scheduler. */
         ErtsThrPrgrDelayHandle delay_handle;
diff --git a/erts/emulator/beam/erl_bif_os.c b/erts/emulator/beam/erl_bif_os.c
index 5cd172c26f..910325a2f4 100644
--- a/erts/emulator/beam/erl_bif_os.c
+++ b/erts/emulator/beam/erl_bif_os.c
@@ -37,6 +37,8 @@
 #include "dist.h"
 #include "erl_version.h"
 
+static int check_env_name(char *name);
+
 /*
  * Return the pid for the Erlang process in the host OS.
  */
@@ -101,8 +103,10 @@ BIF_RETTYPE os_getenv_1(BIF_ALIST_1)
     key_str = erts_convert_filename_to_native(BIF_ARG_1,buf,STATIC_BUF_SIZE,
 					      ERTS_ALC_T_TMP,1,0,&len);
 
-    if (!key_str) {
-	BIF_ERROR(p, BADARG);
+    if (!check_env_name(key_str)) {
+        if (key_str && key_str != &buf[0])
+            erts_free(ERTS_ALC_T_TMP, key_str);
+        BIF_ERROR(p, BADARG);
     }
 
     if (key_str != &buf[0])
@@ -143,25 +147,20 @@ BIF_RETTYPE os_putenv_2(BIF_ALIST_2)
 {
     char def_buf_key[STATIC_BUF_SIZE];
     char def_buf_value[STATIC_BUF_SIZE];
-    char *key_buf, *value_buf;
+    char *key_buf = NULL, *value_buf = NULL;
 
     key_buf = erts_convert_filename_to_native(BIF_ARG_1,def_buf_key,
 					      STATIC_BUF_SIZE,
 					      ERTS_ALC_T_TMP,0,0,NULL);
-    if (!key_buf) {
-	BIF_ERROR(BIF_P, BADARG);
-    }
+    if (!check_env_name(key_buf))
+        goto badarg;
+
     value_buf = erts_convert_filename_to_native(BIF_ARG_2,def_buf_value,
 						STATIC_BUF_SIZE,
 						ERTS_ALC_T_TMP,1,0,
 						NULL);
-    if (!value_buf) {
-	if (key_buf != def_buf_key) {
-	    erts_free(ERTS_ALC_T_TMP, key_buf);
-	}
-	BIF_ERROR(BIF_P, BADARG);
-    }
-	    
+    if (!value_buf)
+        goto badarg;
 
     if (erts_sys_putenv(key_buf, value_buf)) {
 	if (key_buf != def_buf_key) {
@@ -179,6 +178,13 @@ BIF_RETTYPE os_putenv_2(BIF_ALIST_2)
 	erts_free(ERTS_ALC_T_TMP, value_buf);
     }
     BIF_RET(am_true);
+
+badarg:
+    if (key_buf && key_buf != def_buf_key)
+	erts_free(ERTS_ALC_T_TMP, key_buf);
+    if (value_buf && value_buf != def_buf_value)
+	erts_free(ERTS_ALC_T_TMP, value_buf);
+    BIF_ERROR(BIF_P, BADARG);
 }
 
 BIF_RETTYPE os_unsetenv_1(BIF_ALIST_1)
@@ -188,20 +194,21 @@ BIF_RETTYPE os_unsetenv_1(BIF_ALIST_1)
 
     key_buf = erts_convert_filename_to_native(BIF_ARG_1,buf,STATIC_BUF_SIZE,
 					      ERTS_ALC_T_TMP,0,0,NULL);
-    if (!key_buf) {
-	BIF_ERROR(BIF_P, BADARG);
-    }
+    if (!check_env_name(key_buf))
+        goto badarg;
+
+    if (erts_sys_unsetenv(key_buf))
+        goto badarg;
 
-    if (erts_sys_unsetenv(key_buf)) {
-	if (key_buf != buf) {
-	    erts_free(ERTS_ALC_T_TMP, key_buf);
-	}
-	BIF_ERROR(BIF_P, BADARG);
-    }
     if (key_buf != buf) {
 	erts_free(ERTS_ALC_T_TMP, key_buf);
     }
     BIF_RET(am_true);
+
+badarg:
+    if (key_buf && key_buf != buf)
+        erts_free(ERTS_ALC_T_TMP, key_buf);
+    BIF_ERROR(BIF_P, BADARG);    
 }
 
 BIF_RETTYPE os_set_signal_2(BIF_ALIST_2) {
@@ -217,3 +224,27 @@ BIF_RETTYPE os_set_signal_2(BIF_ALIST_2) {
 error:
     BIF_ERROR(BIF_P, BADARG);
 }
+
+static int
+check_env_name(char *raw_name)
+{
+    byte *c = (byte *) raw_name;
+    int encoding;
+
+    if (!c)
+        return 0;
+    
+    encoding = erts_get_native_filename_encoding();
+
+    if (erts_raw_env_char_is_7bit_ascii_char('\0', c, encoding))
+        return 0; /* Do not allow empty name... */
+
+    /* Verify no '=' characters in variable name... */
+    do {
+        if (erts_raw_env_char_is_7bit_ascii_char('=', c, encoding))
+            return 0;
+        c = erts_raw_env_next_char(c, encoding);
+    } while (!erts_raw_env_char_is_7bit_ascii_char('\0', c, encoding));
+
+    return 1; /* Seems ok... */
+}
diff --git a/erts/emulator/beam/erl_bif_port.c b/erts/emulator/beam/erl_bif_port.c
index 3b8e70d44a..c4a4dd5863 100644
--- a/erts/emulator/beam/erl_bif_port.c
+++ b/erts/emulator/beam/erl_bif_port.c
@@ -45,7 +45,7 @@
 #include "dtrace-wrapper.h"
 
 static Port *open_port(Process* p, Eterm name, Eterm settings, int *err_typep, int *err_nump);
-static byte* convert_environment(Process* p, Eterm env);
+static char* convert_environment(Eterm env);
 static char **convert_args(Eterm);
 static void free_args(char **);
 
@@ -718,11 +718,11 @@ open_port(Process* p, Eterm name, Eterm settings, int *err_typep, int *err_nump)
 			goto badarg;
 		    }
 		} else if (option == am_env) {
-		    byte* bytes;
-		    if ((bytes = convert_environment(p, *tp)) == NULL) {
+                    if (opts.envir) /* ignore previous env option... */
+                        erts_free(ERTS_ALC_T_OPEN_PORT_ENV, opts.envir);
+                    opts.envir = convert_environment(*tp);
+                    if (!opts.envir)
 			goto badarg;
-		    }
-		    opts.envir = (char *) bytes;
 		} else if (option == am_args) {
 		    char **av;
 		    char **oav = opts.argv;
@@ -956,6 +956,8 @@ open_port(Process* p, Eterm name, Eterm settings, int *err_typep, int *err_nump)
 	erts_atomic32_read_bor_relb(&port->state, sflgs);
  
  do_return:
+    if (opts.envir)
+        erts_free(ERTS_ALC_T_OPEN_PORT_ENV, opts.envir);
     if (name_buf)
 	erts_free(ERTS_ALC_T_TMP, (void *) name_buf);
     if (opts.argv) {
@@ -1021,74 +1023,129 @@ static void free_args(char **av)
     }
     erts_free(ERTS_ALC_T_TMP, av);
 }
-    
 
-static byte* convert_environment(Process* p, Eterm env)
+#ifdef DEBUG
+#define ERTS_CONV_ENV_BUF_EXTRA 2
+#else
+#define ERTS_CONV_ENV_BUF_EXTRA 1024
+#endif
+
+static char* convert_environment(Eterm env)
 {
-    Eterm all;
-    Eterm* temp_heap;
-    Eterm* hp;
-    Uint heap_size;
-    Sint n;
-    Sint size;
+    /*
+     * Returns environment buffer in memory allocated
+     * as ERTS_ALC_T_OPEN_PORT_ENV. Caller *needs*
+     * to deallocate...
+     */
+
+    Sint size, alloc_size;
     byte* bytes;
     int encoding = erts_get_native_filename_encoding();
 
-    if ((n = erts_list_length(env)) < 0) {
-	return NULL;
-    }
-    heap_size = 2*(5*n+1);
-    temp_heap = hp = (Eterm *) erts_alloc(ERTS_ALC_T_TMP, heap_size*sizeof(Eterm));
-    bytes = NULL;		/* Indicating error */
+    alloc_size = ERTS_CONV_ENV_BUF_EXTRA;
+    bytes = erts_alloc(ERTS_ALC_T_OPEN_PORT_ENV,
+                       alloc_size);
+    size = 0;
 
-    /*
-     * All errors below are handled by jumping to 'done', to ensure that the memory
-     * gets deallocated. Do NOT return directly from this function.
-     */
+    /* ERTS_CONV_ENV_BUF_EXTRA >= for end delimiter... */
+    ERTS_CT_ASSERT(ERTS_CONV_ENV_BUF_EXTRA >= 2);
 
-    all = CONS(hp, make_small(0), NIL);
-    hp += 2;
+    while (is_list(env)) {
+        Sint var_sz, val_sz, need;
+        byte *str, *limit;
+	Eterm tmp, *tp, *consp;
 
-    while(is_list(env)) {
-	Eterm tmp;
-	Eterm* tp;
+        consp = list_val(env);
+	tmp = CAR(consp);
+	if (is_not_tuple_arity(tmp, 2))
+	    goto error;
 
-	tmp = CAR(list_val(env));
-	if (is_not_tuple_arity(tmp, 2)) {
-	    goto done;
-	}
 	tp = tuple_val(tmp);
-	tmp = CONS(hp, make_small(0), NIL);
-	hp += 2;
-	if (tp[2] != am_false) {
-	    tmp = CONS(hp, tp[2], tmp);
-	    hp += 2;
-	}
-	tmp = CONS(hp, make_small('='), tmp);
-	hp += 2;
-	tmp = CONS(hp, tp[1], tmp);
-	hp += 2;
-	all = CONS(hp, tmp, all);
-	hp += 2;
-	env = CDR(list_val(env));
-    }
-    if (is_not_nil(env)) {
-	goto done;
-    }
 
-    if ((size = erts_native_filename_need(all, encoding, 1)) < 0) {
-	goto done;
+        /* Check encoding of env variable... */
+        if (is_not_list(tp[1]))
+            goto error;
+        var_sz = erts_native_filename_need(tp[1], encoding);
+        if (var_sz <= 0)
+            goto error;
+        /* Check encoding of value... */
+        if (tp[2] == am_false || is_nil(tp[2]))
+            val_sz = 0;
+        else if (is_not_list(tp[2]))
+            goto error;
+        else {
+            val_sz = erts_native_filename_need(tp[2], encoding);
+            if (val_sz < 0)
+                goto error;
+        }
+
+        /* Ensure enough memory... */
+        need = size;
+        need += var_sz + val_sz;
+        /* '=' and '\0' */
+        need += 2 * erts_raw_env_7bit_ascii_char_need(encoding);
+        if (need > alloc_size) {
+            alloc_size = (need - alloc_size) + alloc_size;
+            alloc_size += ERTS_CONV_ENV_BUF_EXTRA;
+            bytes = erts_realloc(ERTS_ALC_T_OPEN_PORT_ENV,
+                                 bytes, alloc_size);
+        }
+
+        /* Write environment variable name... */
+        str = bytes + size;
+        erts_native_filename_put(tp[1], encoding, str);
+        /* empty variable name is not allowed... */
+        if (erts_raw_env_char_is_7bit_ascii_char('\0', str, encoding))
+            goto error;
+
+        /*
+         * Drop null characters at the end and verify that we do
+         * not have any '=' characters in the name...
+         */
+        limit = str + var_sz;
+        while (str < limit) {
+            if (erts_raw_env_char_is_7bit_ascii_char('\0', str, encoding))
+                break;
+            if (erts_raw_env_char_is_7bit_ascii_char('=', str, encoding))
+                goto error;
+            str = erts_raw_env_next_char(str, encoding);
+        }
+
+        /* Write the equals sign... */
+        str = erts_raw_env_7bit_ascii_char_put('=', str, encoding);
+
+        /* Write the value... */
+        if (val_sz > 0) {
+            limit = str + val_sz;
+            erts_native_filename_put(tp[2], encoding, str);
+            while (str < limit) {
+                if (erts_raw_env_char_is_7bit_ascii_char('\0', str, encoding))
+                    break;
+                str = erts_raw_env_next_char(str, encoding);
+            }
+        }
+
+        /* Delimit... */
+        str = erts_raw_env_7bit_ascii_char_put('\0', str, encoding);
+
+        size = str - bytes;
+        ASSERT(size <= alloc_size);
+
+        env = CDR(consp);
     }
 
-    /*
-     * Put the result in a binary (no risk for a memory leak that way).
-     */
-    (void) erts_new_heap_binary(p, NULL, size, &bytes);
-    erts_native_filename_put(all,encoding,bytes);
+    /* End delimit... */
+    (void) erts_raw_env_7bit_ascii_char_put('\0', &bytes[size], encoding);
+
+    if (is_nil(env))
+        return (char *) bytes;
+
+error:
+
+    if (bytes)
+        erts_free(ERTS_ALC_T_OPEN_PORT_ENV, bytes);
 
- done:
-    erts_free(ERTS_ALC_T_TMP, temp_heap);
-    return bytes;
+    return (char *) NULL; /* error... */
 }
 
 /* ------------ decode_packet() and friends: */
diff --git a/erts/emulator/beam/erl_binary.h b/erts/emulator/beam/erl_binary.h
index 05007e864e..46653a8580 100644
--- a/erts/emulator/beam/erl_binary.h
+++ b/erts/emulator/beam/erl_binary.h
@@ -363,8 +363,6 @@ erts_free_aligned_binary_bytes(byte* buf)
 #  define CHICKEN_PAD (sizeof(void*) - 1)
 #endif
 
-/* Caller must initialize 'refc'
-*/
 ERTS_GLB_INLINE Binary *
 erts_bin_drv_alloc_fnf(Uint size)
 {
@@ -383,8 +381,6 @@ erts_bin_drv_alloc_fnf(Uint size)
     return res;
 }
 
-/* Caller must initialize 'refc'
-*/
 ERTS_GLB_INLINE Binary *
 erts_bin_drv_alloc(Uint size)
 {
@@ -401,9 +397,6 @@ erts_bin_drv_alloc(Uint size)
     return res;
 }
 
-
-/* Caller must initialize 'refc'
-*/
 ERTS_GLB_INLINE Binary *
 erts_bin_nrml_alloc(Uint size)
 {
diff --git a/erts/emulator/beam/erl_cpu_topology.c b/erts/emulator/beam/erl_cpu_topology.c
index 49f9beb19f..6f8d2f8c35 100644
--- a/erts/emulator/beam/erl_cpu_topology.c
+++ b/erts/emulator/beam/erl_cpu_topology.c
@@ -602,7 +602,7 @@ write_schedulers_bind_change(erts_cpu_topology_t *cpudata, int size)
 
 	cpu_bind_order_sort(cpudata, size, cpu_bind_order, 1);
 
-	for (cpu_ix = 0; cpu_ix < size && cpu_ix < erts_no_schedulers; cpu_ix++)
+	for (cpu_ix = 0; cpu_ix < size && s_ix <= erts_no_schedulers; cpu_ix++)
 	    if (erts_is_cpu_available(cpuinfo, cpudata[cpu_ix].logical))
 		scheduler2cpu_map[s_ix++].bind_id = cpudata[cpu_ix].logical;
     }
diff --git a/erts/emulator/beam/erl_gc.c b/erts/emulator/beam/erl_gc.c
index 97a1ca915f..0da4468f9c 100644
--- a/erts/emulator/beam/erl_gc.c
+++ b/erts/emulator/beam/erl_gc.c
@@ -1210,8 +1210,8 @@ erts_garbage_collect_literals(Process* p, Eterm* literals,
     p->old_htop = old_htop;
 
     /*
-     * Prepare to sweep binaries. Since all MSOs on the new heap
-     * must be come before MSOs on the old heap, find the end of
+     * Prepare to sweep off-heap objects. Since all MSOs on the new
+     * heap must be come before MSOs on the old heap, find the end of
      * current MSO list and use that as a starting point.
      */
 
@@ -1223,25 +1223,50 @@ erts_garbage_collect_literals(Process* p, Eterm* literals,
     }
 
     /*
-     * Sweep through all binaries in the temporary literal area.
+     * Sweep through all off-heap objects in the temporary literal area.
      */
 
     while (oh) {
 	if (IS_MOVED_BOXED(oh->thing_word)) {
-	    Binary* bptr;
 	    struct erl_off_heap_header* ptr;
 
-	    ptr = (struct erl_off_heap_header*) boxed_val(oh->thing_word);
-	    ASSERT(thing_subtag(ptr->thing_word) == REFC_BINARY_SUBTAG);
-	    bptr = ((ProcBin*)ptr)->val;
-
-	    /*
-	     * This binary has been copied to the heap.
+            /*
+	     * This off-heap object has been copied to the heap.
 	     * We must increment its reference count and
 	     * link it into the MSO list for the process.
 	     */
 
-	    erts_refc_inc(&bptr->intern.refc, 1);
+	    ptr = (struct erl_off_heap_header*) boxed_val(oh->thing_word);
+            switch (thing_subtag(ptr->thing_word)) {
+            case REFC_BINARY_SUBTAG:
+                {
+                    Binary* bptr = ((ProcBin*)ptr)->val;
+                    erts_refc_inc(&bptr->intern.refc, 1);
+                    break;
+                }
+            case FUN_SUBTAG:
+                {
+                    ErlFunEntry* fe = ((ErlFunThing*)ptr)->fe;
+                    erts_refc_inc(&fe->refc, 1);
+                    break;
+                }
+            case REF_SUBTAG:
+                {
+                    ErtsMagicBinary *bptr;
+                    ASSERT(is_magic_ref_thing(ptr));
+                    bptr = ((ErtsMRefThing *) ptr)->mb;
+                    erts_refc_inc(&bptr->intern.refc, 1);
+                    break;
+                }
+            default:
+                {
+                    ExternalThing *etp;
+                    ASSERT(is_external_header(ptr->thing_word));
+                    etp = (ExternalThing *) ptr;
+                    erts_refc_inc(&etp->node->refc, 1);
+                    break;
+                }
+            }
 	    *prev = ptr;
 	    prev = &ptr->next;
 	}
diff --git a/erts/emulator/beam/erl_io_queue.c b/erts/emulator/beam/erl_io_queue.c
index 190ba6bbb9..40d69ea6b0 100644
--- a/erts/emulator/beam/erl_io_queue.c
+++ b/erts/emulator/beam/erl_io_queue.c
@@ -658,7 +658,7 @@ io_list_vec_count(Eterm obj, Uint *v_size,
 int
 erts_ioq_iolist_vec_len(Eterm obj, int* vsize, Uint* csize,
                         Uint* pvsize, Uint* pcsize,
-                        Uint* total_size, Uint blimit)
+                        size_t* total_size, Uint blimit)
 {
     DECLARE_ESTACK(s);
     Eterm* objp;
@@ -669,7 +669,7 @@ erts_ioq_iolist_vec_len(Eterm obj, int* vsize, Uint* csize,
     Uint p_v_size = 0;
     Uint p_c_size = 0;
     Uint p_in_clist = 0;
-    Uint total;
+    size_t total;
 
     goto L_jump_start;  /* avoid a push */
 
diff --git a/erts/emulator/beam/erl_io_queue.h b/erts/emulator/beam/erl_io_queue.h
index 51abe99510..7d0fe6751c 100644
--- a/erts/emulator/beam/erl_io_queue.h
+++ b/erts/emulator/beam/erl_io_queue.h
@@ -103,7 +103,7 @@ Uint erts_ioq_sizeq(ErtsIOQueue *q);
 
 int erts_ioq_iolist_vec_len(Eterm obj, int* vsize, Uint* csize,
                             Uint* pvsize, Uint* pcsize,
-                            Uint* total_size, Uint blimit);
+                            size_t* total_size, Uint blimit);
 int erts_ioq_iolist_to_vec(Eterm obj, SysIOVec* iov,
                            ErtsIOQBinary** binv, ErtsIOQBinary* cbin,
                            Uint bin_limit, int driver_binary);
@@ -111,7 +111,7 @@ int erts_ioq_iolist_to_vec(Eterm obj, SysIOVec* iov,
 ERTS_GLB_INLINE
 int erts_ioq_iodata_vec_len(Eterm obj, int* vsize, Uint* csize,
                             Uint* pvsize, Uint* pcsize,
-                            Uint* total_size, Uint blimit);
+                            size_t* total_size, Uint blimit);
 ERTS_GLB_INLINE
 int erts_ioq_iodata_to_vec(Eterm obj, SysIOVec* iov,
                            ErtsIOQBinary** binv, ErtsIOQBinary* cbin,
@@ -123,7 +123,7 @@ int erts_ioq_iodata_to_vec(Eterm obj, SysIOVec* iov,
 ERTS_GLB_INLINE
 int erts_ioq_iodata_vec_len(Eterm obj, int* vsize, Uint* csize,
                             Uint* pvsize, Uint* pcsize,
-                            Uint* total_size, Uint blimit) {
+                            size_t* total_size, Uint blimit) {
   if (is_binary(obj)) {
     /* We optimize for when we get a procbin without a bit-offset
      * that fits in one iov slot
diff --git a/erts/emulator/beam/erl_lock_check.c b/erts/emulator/beam/erl_lock_check.c
index 4cdef0200f..64950fc252 100644
--- a/erts/emulator/beam/erl_lock_check.c
+++ b/erts/emulator/beam/erl_lock_check.c
@@ -86,6 +86,10 @@ static erts_lc_lock_order_t erts_lock_order[] = {
     {	"hipe_mfait_lock",			NULL			},
 #endif
     {	"nodes_monitors",			NULL			},
+    {	"meta_name_tab",	         	"address"		},
+    {	"db_tab",				"address"		},
+    {	"db_tab_fix",				"address"		},
+    {	"db_hash_slot",				"address"		},
     {	"resource_monitors",			"address"	        },
     {   "driver_list",                          NULL                    },
     {	"proc_link",				"pid"			},
@@ -95,12 +99,8 @@ static erts_lc_lock_order_t erts_lock_order[] = {
     {	"dist_entry_links",			"address"		},
     {   "code_write_permission",                NULL                    },
     {	"purge_state",		      		NULL			},
-    {	"meta_name_tab",	         	"address"		},
-    {	"db_tab",				"address"		},
     {	"proc_status",				"pid"			},
     {	"proc_trace",				"pid"			},
-    {	"db_tab_fix",				"address"		},
-    {	"db_hash_slot",				"address"		},
     {	"node_table",				NULL			},
     {	"dist_table",				NULL			},
     {	"sys_tracers",				NULL			},
@@ -109,7 +109,6 @@ static erts_lc_lock_order_t erts_lock_order[] = {
     {	"fun_tab",				NULL			},
     {	"environ",				NULL			},
     {	"release_literal_areas",		NULL			},
-    {	"efile_drv",				"address"		},
     {	"drv_ev_state_grow",			NULL,   		},
     {	"drv_ev_state",				"address"		},
     {	"safe_hash",				"address"		},
@@ -170,9 +169,6 @@ static erts_lc_lock_order_t erts_lock_order[] = {
     {   "save_ops_lock",                        NULL                    },
 #endif
 #endif
-#ifdef	USE_VM_PROBES
-    {   "efile_drv dtrace mutex",               NULL                    },
-#endif
     {	"mtrace_buf",				NULL			},
     {	"os_monotonic_time",			NULL			},
     {	"erts_alloc_hard_debug",		NULL			},
diff --git a/erts/emulator/beam/erl_map.c b/erts/emulator/beam/erl_map.c
index f0c54e05f7..8047a9567f 100644
--- a/erts/emulator/beam/erl_map.c
+++ b/erts/emulator/beam/erl_map.c
@@ -91,7 +91,6 @@ static BIF_RETTYPE hashmap_merge(Process *p, Eterm nodeA, Eterm nodeB, int swap_
 static Export hashmap_merge_trap_export;
 static BIF_RETTYPE maps_merge_trap_1(BIF_ALIST_1);
 static Uint hashmap_subtree_size(Eterm node);
-static Eterm hashmap_to_list(Process *p, Eterm map, Sint n);
 static Eterm hashmap_keys(Process *p, Eterm map);
 static Eterm hashmap_values(Process *p, Eterm map);
 static Eterm hashmap_delete(Process *p, Uint32 hx, Eterm key, Eterm node, Eterm *value);
@@ -139,80 +138,6 @@ BIF_RETTYPE map_size_1(BIF_ALIST_1) {
     BIF_ERROR(BIF_P, BADMAP);
 }
 
-/* maps:to_list/1 */
-
-BIF_RETTYPE maps_to_list_1(BIF_ALIST_1) {
-    if (is_flatmap(BIF_ARG_1)) {
-	Uint n;
-	Eterm* hp;
-	Eterm *ks,*vs, res, tup;
-	flatmap_t *mp = (flatmap_t*)flatmap_val(BIF_ARG_1);
-
-	ks  = flatmap_get_keys(mp);
-	vs  = flatmap_get_values(mp);
-	n   = flatmap_get_size(mp);
-	hp  = HAlloc(BIF_P, (2 + 3) * n);
-	res = NIL;
-
-	while(n--) {
-	    tup = TUPLE2(hp, ks[n], vs[n]); hp += 3;
-	    res = CONS(hp, tup, res); hp += 2;
-	}
-
-	BIF_RET(res);
-    } else if (is_hashmap(BIF_ARG_1)) {
-	return hashmap_to_list(BIF_P, BIF_ARG_1, -1);
-    }
-
-    BIF_P->fvalue = BIF_ARG_1;
-    BIF_ERROR(BIF_P, BADMAP);
-}
-
-/* erts_internal:maps_to_list/2
- *
- * This function should be removed once iterators are in place.
- * Never document it.
- * Never encourage its usage.
- *
- * A negative value in ARG 2 means the entire map.
- */
-
-BIF_RETTYPE erts_internal_maps_to_list_2(BIF_ALIST_2) {
-    Sint m;
-    if (term_to_Sint(BIF_ARG_2, &m)) {
-        if (is_flatmap(BIF_ARG_1)) {
-            Uint n;
-            Eterm* hp;
-            Eterm *ks,*vs, res, tup;
-            flatmap_t *mp = (flatmap_t*)flatmap_val(BIF_ARG_1);
-
-            ks  = flatmap_get_keys(mp);
-            vs  = flatmap_get_values(mp);
-            n   = flatmap_get_size(mp);
-
-            if (m >= 0) {
-                n = m < n ? m : n;
-            }
-
-            hp  = HAlloc(BIF_P, (2 + 3) * n);
-            res = NIL;
-
-            while(n--) {
-                tup = TUPLE2(hp, ks[n], vs[n]); hp += 3;
-                res = CONS(hp, tup, res); hp += 2;
-            }
-
-            BIF_RET(res);
-        } else if (is_hashmap(BIF_ARG_1)) {
-            return hashmap_to_list(BIF_P, BIF_ARG_1, m);
-        }
-        BIF_P->fvalue = BIF_ARG_1;
-        BIF_ERROR(BIF_P, BADMAP);
-    }
-    BIF_ERROR(BIF_P, BADARG);
-}
-
-
 /* maps:find/2
  * return value if key *matches* a key in the map
  */
@@ -1962,45 +1887,31 @@ BIF_RETTYPE maps_values_1(BIF_ALIST_1) {
     BIF_ERROR(BIF_P, BADMAP);
 }
 
-static Eterm hashmap_to_list(Process *p, Eterm node, Sint m) {
-    DECLARE_WSTACK(stack);
-    Eterm *hp, *kv;
-    Eterm tup, res = NIL;
-    Uint n = hashmap_size(node);
-
-    if (m >= 0) {
-        n = m < n ? m : n;
-    }
-
-    hp  = HAlloc(p, n * (2 + 3));
-    hashmap_iterator_init(&stack, node, 0);
-    while (n--) {
-        kv  = hashmap_iterator_next(&stack);
-        ASSERT(kv != NULL);
-	tup = TUPLE2(hp, CAR(kv), CDR(kv));
-	hp += 3;
-	res = CONS(hp, tup, res);
-	hp += 2;
-    }
-    DESTROY_WSTACK(stack);
-    return res;
-}
-
-void hashmap_iterator_init(ErtsWStack* s, Eterm node, int reverse) {
-    Eterm hdr = *hashmap_val(node);
+static ERTS_INLINE
+Uint hashmap_node_size(Eterm hdr, Eterm **nodep)
+{
     Uint sz;
 
     switch(hdr & _HEADER_MAP_SUBTAG_MASK) {
     case HAMT_SUBTAG_HEAD_ARRAY:
 	sz = 16;
+        if (nodep) ++*nodep;
 	break;
     case HAMT_SUBTAG_HEAD_BITMAP:
+        if (nodep) ++*nodep;
     case HAMT_SUBTAG_NODE_BITMAP:
         sz = hashmap_bitcount(MAP_HEADER_VAL(hdr));
+        ASSERT(sz < 17);
 	break;
     default:
 	erts_exit(ERTS_ABORT_EXIT, "bad header");
     }
+    return sz;
+}
+
+void hashmap_iterator_init(ErtsWStack* s, Eterm node, int reverse) {
+    Eterm hdr = *hashmap_val(node);
+    Uint sz = hashmap_node_size(hdr, NULL);
 
     WSTACK_PUSH3((*s), (UWord)THE_NON_VALUE,  /* end marker */
 		 (UWord)(!reverse ? 0 : sz+1),
@@ -2024,20 +1935,7 @@ Eterm* hashmap_iterator_next(ErtsWStack* s) {
 	    ptr = boxed_val(node);
 	    hdr = *ptr;
 	    ASSERT(is_header(hdr));
-	    switch(hdr & _HEADER_MAP_SUBTAG_MASK) {
-	    case HAMT_SUBTAG_HEAD_ARRAY:
-		ptr++;
-		sz = 16;
-		break;
-	    case HAMT_SUBTAG_HEAD_BITMAP:
-		ptr++;
-	    case HAMT_SUBTAG_NODE_BITMAP:
-		sz = hashmap_bitcount(MAP_HEADER_VAL(hdr));
-		ASSERT(sz < 17);
-		break;
-	    default:
-		erts_exit(ERTS_ABORT_EXIT, "bad header");
-	    }
+            sz = hashmap_node_size(hdr, &ptr);
 
 	    idx++;
 
@@ -2074,20 +1972,7 @@ Eterm* hashmap_iterator_prev(ErtsWStack* s) {
 	    ptr = boxed_val(node);
 	    hdr = *ptr;
 	    ASSERT(is_header(hdr));
-	    switch(hdr & _HEADER_MAP_SUBTAG_MASK) {
-	    case HAMT_SUBTAG_HEAD_ARRAY:
-		ptr++;
-		sz = 16;
-		break;
-	    case HAMT_SUBTAG_HEAD_BITMAP:
-		ptr++;
-	    case HAMT_SUBTAG_NODE_BITMAP:
-		sz = hashmap_bitcount(MAP_HEADER_VAL(hdr));
-		ASSERT(sz < 17);
-		break;
-	    default:
-		erts_exit(ERTS_ERROR_EXIT, "bad header");
-	    }
+            sz = hashmap_node_size(hdr, &ptr);
 
             if (idx > sz)
 		idx = sz;
@@ -3061,6 +2946,363 @@ static Eterm hashmap_bld_tuple_uint(Uint **hpp, Uint *szp, Uint n, Uint nums[])
 }
 
 
+/**
+ * In hashmap the Path is a bit pattern that describes
+ * which slot we should traverse in each hashmap node.
+ * Since each hashmap node can only be up to 16 elements
+ * large we use 4 bits per level in the path.
+ *
+ * So a Path with value 0x110 will first get the 0:th
+ * slot in the head node, and then the 1:st slot in the
+ * resulting node and then finally the 1:st slot in the
+ * node beneath. If that slot is not a leaf, then the path
+ * continues down the 0:th slot until it finds a leaf.
+ *
+ * Once the leaf has been found, the return value is created
+ * by traversing the tree using the the stack that was built
+ * when searching for the first leaf to return.
+ *
+ * The index can become a bignum, which complicates the code
+ * a bit. However it should be very rare that this happens
+ * even on a 32bit system as you would need a tree of depth
+ * 7 or more.
+ *
+ * If the number of elements remaining in the map is greater
+ * than how many we want to return, we build a new Path, using
+ * the stack, that points to the next leaf.
+ *
+ * The third argument to this function controls how the data
+ * is returned.
+ *
+ * iterator: The key-value associations are to be used by
+ *           maps:iterator. The return has this format:
+ *             {K1,V1,{K2,V2,none | [Path | Map]}}
+ *           this makes the maps:next function very simple
+ *           and performant.
+ *
+ * list(): The key-value associations are to be used by
+ *         maps:to_list. The return has this format:
+ *             [Path, Map | [{K1,V1},{K2,V2} | BIF_ARG_3]]
+ *                 or if no more associations remain
+ *             [{K1,V1},{K2,V2} | BIF_ARG_3]
+ */
+
+#define PATH_ELEM_SIZE 4
+#define PATH_ELEM_MASK 0xf
+#define PATH_ELEM(PATH) ((PATH) & PATH_ELEM_MASK)
+#define PATH_ELEMS_PER_DIGIT (sizeof(ErtsDigit) * 8 / PATH_ELEM_SIZE)
+
+BIF_RETTYPE erts_internal_map_next_3(BIF_ALIST_3) {
+
+    Eterm path, map;
+    enum { iterator, list } type;
+
+    path = BIF_ARG_1;
+    map  = BIF_ARG_2;
+
+    if (!is_map(map))
+        BIF_ERROR(BIF_P, BADARG);
+
+    if (BIF_ARG_3 == am_iterator) {
+        type = iterator;
+    } else if (is_nil(BIF_ARG_3) || is_list(BIF_ARG_3)) {
+        type = list;
+    } else {
+        BIF_ERROR(BIF_P, BADARG);
+    }
+
+    if (is_flatmap(map)) {
+        Uint n;
+	Eterm *ks,*vs, res, *hp;
+	flatmap_t *mp = (flatmap_t*)flatmap_val(map);
+
+	ks  = flatmap_get_keys(mp);
+	vs  = flatmap_get_values(mp);
+	n   = flatmap_get_size(mp);
+
+        if (!is_small(BIF_ARG_1) || n < unsigned_val(BIF_ARG_1))
+            BIF_ERROR(BIF_P, BADARG);
+
+        if (type == iterator) {
+            hp  = HAlloc(BIF_P, 4 * n);
+            res = am_none;
+
+            while(n--) {
+                res = TUPLE3(hp, ks[n], vs[n], res); hp += 4;
+            }
+        } else {
+            hp  = HAlloc(BIF_P, (2 + 3) * n);
+            res = BIF_ARG_3;
+
+            while(n--) {
+                Eterm tup = TUPLE2(hp, ks[n], vs[n]); hp += 3;
+                res = CONS(hp, tup, res); hp += 2;
+            }
+        }
+
+	BIF_RET(res);
+    } else {
+        Uint curr_path;
+        Uint path_length = 0;
+        Uint *path_rest = NULL;
+        int i, elems, orig_elems;
+        Eterm node = map, res, *path_ptr = NULL, *hp;
+
+        /* A stack WSTACK is used when traversing the hashmap.
+         * It contains: node, idx, sz, ptr
+         *
+         * `node` is not really needed, but it is very nice to
+         * have when debugging.
+         *
+         * `idx` always points to the next un-explored entry in
+         * a node. If there are no more un-explored entries,
+         * `idx` is equal to `sz`.
+         *
+         * `sz` is the number of elements in the node.
+         *
+         * `ptr` is a pointer to where the elements of the node begins.
+         */
+        DECLARE_WSTACK(stack);
+
+        ASSERT(is_hashmap(node));
+
+/* How many elements we return in one call depends on the number of reductions
+ * that the process has left to run. In debug we return fewer elements to test
+ * the Path implementation better.
+ *
+ * Also, when the path is 0 (i.e. for the first call) we limit the number of
+ * elements to MAP_SMALL_MAP_LIMIT in order to not use a huge amount of heap
+ * when only the first X associations in the hashmap was needed.
+ */
+#if defined(DEBUG)
+#define FCALLS_ELEMS(BIF_P) ((BIF_P->fcalls / 4) & 0xF)
+#else
+#define FCALLS_ELEMS(BIF_P) (BIF_P->fcalls / 4)
+#endif
+
+        if (MAX(FCALLS_ELEMS(BIF_P), 1) < hashmap_size(map))
+            elems = MAX(FCALLS_ELEMS(BIF_P), 1);
+        else
+            elems = hashmap_size(map);
+
+#undef FCALLS_ELEMS
+
+        if (is_small(path)) {
+            curr_path = unsigned_val(path);
+
+            if (curr_path == 0 && elems > MAP_SMALL_MAP_LIMIT) {
+                elems = MAP_SMALL_MAP_LIMIT;
+            }
+        } else if (is_big(path)) {
+            Eterm *big = big_val(path);
+            if (bignum_header_is_neg(*big))
+                BIF_ERROR(BIF_P, BADARG);
+            path_length = BIG_ARITY(big) - 1;
+            curr_path = BIG_DIGIT(big,  0);
+            path_rest = BIG_V(big) + 1;
+        } else {
+            BIF_ERROR(BIF_P, BADARG);
+        }
+
+        if (type == iterator) {
+            /* iterator uses the format {K, V, {K, V, {K, V, [Path | Map]}}},
+             * so each element is 4 words large */
+            hp = HAlloc(BIF_P, 4 * elems);
+            res = am_none;
+        } else {
+            /* list used the format [Path, Map, {K,V}, {K,V} | BIF_ARG_3],
+             * so each element is 2+3 words large */
+            hp = HAlloc(BIF_P, (2 + 3) * elems);
+            res = BIF_ARG_3;
+        }
+
+        orig_elems = elems;
+
+        /* First we look for the leaf to start at using the
+           path given. While doing so, we push each map node
+           and the index onto the stack to use later. */
+        for (i = 1; ; i++) {
+            Eterm *ptr = hashmap_val(node),
+                hdr = *ptr++;
+            Uint sz;
+
+            sz = hashmap_node_size(hdr, &ptr);
+
+            if (PATH_ELEM(curr_path) >= sz)
+                goto badarg;
+
+            WSTACK_PUSH4(stack, node, PATH_ELEM(curr_path)+1, sz, (UWord)ptr);
+
+            /* We have found a leaf, return it and the next X elements */
+            if (is_list(ptr[PATH_ELEM(curr_path)])) {
+                Eterm *lst = list_val(ptr[PATH_ELEM(curr_path)]);
+                if (type == iterator) {
+                    res = TUPLE3(hp, CAR(lst), CDR(lst), res); hp += 4;
+                    /* Note where we should patch the Iterator is needed */
+                    path_ptr = hp-1;
+                } else {
+                    Eterm tup = TUPLE2(hp, CAR(lst), CDR(lst)); hp += 3;
+                    res = CONS(hp, tup, res); hp += 2;
+                }
+                elems--;
+                break;
+            }
+
+            node = ptr[PATH_ELEM(curr_path)];
+
+            curr_path >>= PATH_ELEM_SIZE;
+
+            if (i == PATH_ELEMS_PER_DIGIT) {
+                /* Switch to next bignum word if available,
+                   otherwise just follow 0 path */
+                i = 0;
+                if (path_length) {
+                    curr_path = *path_rest;
+                    path_length--;
+                    path_rest++;
+                } else {
+                    curr_path = 0;
+                }
+            }
+        }
+
+        /* We traverse the hashmap and return at most `elems` elements */
+        while(1) {
+            Eterm *ptr = (Eterm*)WSTACK_POP(stack);
+            Uint sz = (Uint)WSTACK_POP(stack);
+            Uint idx = (Uint)WSTACK_POP(stack);
+            Eterm node = (Eterm)WSTACK_POP(stack);
+
+            while (idx < sz && elems != 0 && is_list(ptr[idx])) {
+                Eterm *lst = list_val(ptr[idx]);
+                if (type == iterator) {
+                    res = TUPLE3(hp, CAR(lst), CDR(lst), res); hp += 4;
+                } else {
+                    Eterm tup = TUPLE2(hp, CAR(lst), CDR(lst)); hp += 3;
+                    res = CONS(hp, tup, res); hp += 2;
+                }
+                elems--;
+                idx++;
+            }
+
+            if (elems == 0) {
+                if (idx < sz) {
+                    /* There are more elements in this node to explore */
+                    WSTACK_PUSH4(stack, node, idx+1, sz, (UWord)ptr);
+                } else {
+                    /* pop stack to find the next value */
+                    while (!WSTACK_ISEMPTY(stack)) {
+                        Eterm *ptr = (Eterm*)WSTACK_POP(stack);
+                        Uint sz = (Uint)WSTACK_POP(stack);
+                        Uint idx = (Uint)WSTACK_POP(stack);
+                        Eterm node = (Eterm)WSTACK_POP(stack);
+                        if (idx < sz) {
+                            WSTACK_PUSH4(stack, node, idx+1, sz, (UWord)ptr);
+                            break;
+                        }
+                    }
+                }
+                break;
+            } else {
+                if (idx < sz) {
+                    Eterm hdr;
+                    /* Push next idx in current node */
+                    WSTACK_PUSH4(stack, node, idx+1, sz, (UWord)ptr);
+
+                    /* Push first idx in child node */
+                    node = ptr[idx];
+                    ptr = hashmap_val(ptr[idx]);
+                    hdr = *ptr++;
+                    sz = hashmap_node_size(hdr, &ptr);
+                    WSTACK_PUSH4(stack, node, 0, sz, (UWord)ptr);
+                }
+            }
+
+            /* There are no more element in the hashmap */
+            if (WSTACK_ISEMPTY(stack)) {
+                break;
+            }
+
+        }
+
+        if (!WSTACK_ISEMPTY(stack)) {
+            Uint depth = WSTACK_COUNT(stack) / 4 + 1;
+            /* +1 because we already have the first element in curr_path */
+            Eterm *path_digits = NULL;
+            Uint curr_path = 0;
+
+            /* If the path cannot fit in a small, we allocate a bignum */
+            if (depth >= PATH_ELEMS_PER_DIGIT) {
+                /* We need multiple ErtsDigit's to represent the path */
+                int big_size = BIG_NEED_FOR_BITS(depth * PATH_ELEM_SIZE);
+                hp = HAlloc(BIF_P, big_size);
+                hp[0] = make_pos_bignum_header(big_size - BIG_NEED_SIZE(0));
+                path_digits = hp + big_size - 1;
+            }
+
+
+            /* Pop the stack to create the complete path to the next leaf */
+            while(!WSTACK_ISEMPTY(stack)) {
+                Uint idx;
+
+                (void)WSTACK_POP(stack);
+                (void)WSTACK_POP(stack);
+                idx = (Uint)WSTACK_POP(stack)-1;
+                /* idx - 1 because idx in the stack is pointing to
+                   the next element to fetch. */
+                (void)WSTACK_POP(stack);
+
+                depth--;
+                if (depth % PATH_ELEMS_PER_DIGIT == 0) {
+                    /* Switch to next bignum element */
+                    path_digits[0] = curr_path;
+                    path_digits--;
+                    curr_path = 0;
+                }
+
+                curr_path <<= PATH_ELEM_SIZE;
+                curr_path |= idx;
+            }
+
+            if (path_digits) {
+                path_digits[0] = curr_path;
+                path = make_big(hp);
+            } else {
+                /* The Uint could be too large for a small */
+                path = erts_make_integer(curr_path, BIF_P);
+            }
+
+            if (type == iterator) {
+                hp = HAlloc(BIF_P, 2);
+                *path_ptr = CONS(hp, path, map); hp += 2;
+            } else {
+                hp = HAlloc(BIF_P, 4);
+                res = CONS(hp, map, res); hp += 2;
+                res = CONS(hp, path, res); hp += 2;
+            }
+        } else {
+            if (type == iterator) {
+                HRelease(BIF_P, hp + 4 * elems, hp);
+            } else {
+                HRelease(BIF_P, hp + (2+3) * elems, hp);
+            }
+        }
+        BIF_P->fcalls -= 4 * (orig_elems - elems);
+        DESTROY_WSTACK(stack);
+        BIF_RET(res);
+
+    badarg:
+        if (type == iterator) {
+            HRelease(BIF_P, hp + 4 * elems, hp);
+        } else {
+            HRelease(BIF_P, hp + (2+3) * elems, hp);
+        }
+        BIF_P->fcalls -= 4 * (orig_elems - elems);
+        DESTROY_WSTACK(stack);
+        BIF_ERROR(BIF_P, BADARG);
+    }
+}
+
 /* implementation of builtin emulations */
 
 #if !ERTS_AT_LEAST_GCC_VSN__(3, 4, 0)
diff --git a/erts/emulator/beam/erl_map.h b/erts/emulator/beam/erl_map.h
index c3ccf80b85..718d400e22 100644
--- a/erts/emulator/beam/erl_map.h
+++ b/erts/emulator/beam/erl_map.h
@@ -64,7 +64,6 @@ typedef struct flatmap_s {
 #define hashmap_shift_hash(Heap,Hx,Lvl,Key) \
     (((++(Lvl)) & 7) ? (Hx) >> 4 : hashmap_make_hash(CONS(Heap, make_small((Lvl)>>3), Key)))
 
-
 /* erl_term.h stuff */
 #define flatmap_get_values(x)        (((Eterm *)(x)) + sizeof(flatmap_t)/sizeof(Eterm))
 #define flatmap_get_keys(x)          (((Eterm *)tuple_val(((flatmap_t *)(x))->keys)) + 1)
diff --git a/erts/emulator/beam/erl_message.h b/erts/emulator/beam/erl_message.h
index 9c8cf84e43..a14f4f51d8 100644
--- a/erts/emulator/beam/erl_message.h
+++ b/erts/emulator/beam/erl_message.h
@@ -167,10 +167,9 @@ typedef struct {
     Sint len;            /* queue length */
 
     /*
-     * The following two fields are used by the recv_mark/1 and
+     * The following field is used by the recv_mark/1 and
      * recv_set/1 instructions.
      */
-    BeamInstr* mark;		/* address to rec_loop/2 instruction */
     ErtsMessage** saved_last;	/* saved last pointer */
 } ErlMessageQueue;
 
@@ -236,12 +235,17 @@ typedef struct erl_trace_message_queue__ {
      (p)->msg.len--; \
      if (__mp == NULL) \
          (p)->msg.last = (p)->msg.save; \
-     (p)->msg.mark = 0; \
 } while(0)
 
-/* Reset message save point (after receive match) */
-#define JOIN_MESSAGE(p) \
-     (p)->msg.save = &(p)->msg.first
+/*
+ * Reset message save point (after receive match).
+ * Also invalidate the saved position since it may no
+ * longer be safe to use.
+ */
+#define JOIN_MESSAGE(p) do {                    \
+    (p)->msg.save = &(p)->msg.first;            \
+    (p)->msg.saved_last = 0;                    \
+} while(0)
 
 /* Save current message */
 #define SAVE_MESSAGE(p) \
diff --git a/erts/emulator/beam/erl_msacc.h b/erts/emulator/beam/erl_msacc.h
index 2d4637f800..2588dec903 100644
--- a/erts/emulator/beam/erl_msacc.h
+++ b/erts/emulator/beam/erl_msacc.h
@@ -270,18 +270,32 @@ void erts_msacc_init_thread(char *type, int id, int liberty);
 #define ERTS_MSACC_PUSH_STATE_M()                         \
     ERTS_MSACC_DECLARE_CACHE();                           \
     ERTS_MSACC_PUSH_STATE_CACHED_M()
-#define ERTS_MSACC_PUSH_STATE_CACHED_M()                                \
-    __erts_msacc_state = ERTS_MSACC_IS_ENABLED_CACHED() ?    \
-        erts_msacc_get_state_m__(__erts_msacc_cache) : ERTS_MSACC_STATE_OTHER
+#define ERTS_MSACC_PUSH_STATE_CACHED_M() \
+    do { \
+        if (ERTS_MSACC_IS_ENABLED_CACHED()) { \
+            ASSERT(!__erts_msacc_cache->unmanaged); \
+            __erts_msacc_state = erts_msacc_get_state_m__(__erts_msacc_cache); \
+        } else { \
+            __erts_msacc_state = ERTS_MSACC_STATE_OTHER; \
+        } \
+    } while(0)
 #define ERTS_MSACC_SET_STATE_M(state)                   \
     ERTS_MSACC_DECLARE_CACHE();                         \
     ERTS_MSACC_SET_STATE_CACHED_M(state)
-#define ERTS_MSACC_SET_STATE_CACHED_M(state)            \
-    if (ERTS_MSACC_IS_ENABLED_CACHED())      \
-        erts_msacc_set_state_m__(__erts_msacc_cache, state, 1)
-#define ERTS_MSACC_POP_STATE_M()                                  \
-    if (ERTS_MSACC_IS_ENABLED_CACHED())                      \
-        erts_msacc_set_state_m__(__erts_msacc_cache, __erts_msacc_state, 0)
+#define ERTS_MSACC_SET_STATE_CACHED_M(state) \
+    do { \
+        if (ERTS_MSACC_IS_ENABLED_CACHED()) { \
+            ASSERT(!__erts_msacc_cache->unmanaged); \
+            erts_msacc_set_state_m__(__erts_msacc_cache, state, 1); \
+        } \
+    } while(0)
+#define ERTS_MSACC_POP_STATE_M() \
+    do { \
+        if (ERTS_MSACC_IS_ENABLED_CACHED()) { \
+            ASSERT(!__erts_msacc_cache->unmanaged); \
+            erts_msacc_set_state_m__(__erts_msacc_cache, __erts_msacc_state, 0); \
+        } \
+    } while(0)
 #define ERTS_MSACC_PUSH_AND_SET_STATE_M(state)                    \
     ERTS_MSACC_PUSH_STATE_M(); ERTS_MSACC_SET_STATE_CACHED_M(state)
 
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index f7f12efe28..0a5fe026db 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -544,6 +544,9 @@ void enif_clear_env(ErlNifEnv* env)
     ASSERT(p == menv->env.proc);
     ASSERT(p->common.id == ERTS_INVALID_PID);
     ASSERT(MBUF(p) == menv->env.heap_frag);
+
+    free_tmp_objs(env);
+
     if (MBUF(p) != NULL) {
 	erts_cleanup_offheap(&MSO(p));
 	clear_offheap(&MSO(p));
@@ -555,12 +558,11 @@ void enif_clear_env(ErlNifEnv* env)
     menv->env.hp = menv->env.hp_end = HEAP_TOP(p);
     
     ASSERT(!is_offheap(&MSO(p)));
-    free_tmp_objs(env);
 }
 
 #ifdef DEBUG
 static int enif_send_delay = 0;
-#define ERTS_FORCE_ENIF_SEND_DELAY() (enif_send_delay++ % 2 == 0)
+#define ERTS_FORCE_ENIF_SEND_DELAY() (enif_send_delay++ % 32 == 0)
 #else
 #ifdef ERTS_PROC_LOCK_OWN_IMPL
 #define ERTS_FORCE_ENIF_SEND_DELAY() 0
@@ -1201,11 +1203,12 @@ size_t enif_binary_to_term(ErlNifEnv *dst_env,
     Sint size;
     ErtsHeapFactory factory;
     byte *bp = (byte*) data;
+    Uint32 flags = 0;
 
-    ERTS_CT_ASSERT(ERL_NIF_BIN2TERM_SAFE == ERTS_DIST_EXT_BTT_SAFE);
-
-    if (opts & ~ERL_NIF_BIN2TERM_SAFE) {
-        return 0;
+    switch ((Uint32)opts) {
+    case 0: break;
+    case ERL_NIF_BIN2TERM_SAFE: flags = ERTS_DIST_EXT_BTT_SAFE; break;
+    default: return 0;
     }
     if ((size = erts_decode_ext_size(bp, data_sz)) < 0)
         return 0;
@@ -1217,7 +1220,7 @@ size_t enif_binary_to_term(ErlNifEnv *dst_env,
         erts_factory_dummy_init(&factory);
     }
 
-    *term = erts_decode_ext(&factory, &bp, (Uint32)opts);
+    *term = erts_decode_ext(&factory, &bp, flags);
 
     if (is_non_value(*term)) {
         return 0;
@@ -3323,36 +3326,38 @@ static int examine_iovec_term(Eterm list, UWord max_length, iovec_slice_t *resul
         size = binary_size(binary);
         binary_header = binary_val(binary);
 
-        /* If we're a sub-binary we'll need to check our underlying binary to
-         * determine whether we're on-heap or not. */
-        if(thing_subtag(*binary_header) == SUB_BINARY_SUBTAG) {
-            ErlSubBin *sb = (ErlSubBin*)binary_header;
+        if (size > 0) {
+            /* If we're a sub-binary we'll need to check our underlying binary
+             * to determine whether we're on-heap or not. */
+            if (thing_subtag(*binary_header) == SUB_BINARY_SUBTAG) {
+                ErlSubBin *sb = (ErlSubBin*)binary_header;
 
-            /* Reject bitstrings */
-            if((sb->bitoffs + sb->bitsize) > 0) {
-                return 0;
-            }
+                /* Reject bitstrings */
+                if((sb->bitoffs + sb->bitsize) > 0) {
+                    return 0;
+                }
 
-            ASSERT(size <= binary_size(sb->orig));
-            binary_header = binary_val(sb->orig);
-        }
+                ASSERT(size <= binary_size(sb->orig));
+                binary_header = binary_val(sb->orig);
+            }
 
-        if(thing_subtag(*binary_header) == HEAP_BINARY_SUBTAG) {
-            ASSERT(size <= ERL_ONHEAP_BIN_LIMIT);
+            if (thing_subtag(*binary_header) == HEAP_BINARY_SUBTAG) {
+                ASSERT(size <= ERL_ONHEAP_BIN_LIMIT);
 
-            result->iovec_len += 1;
-            result->onheap_size += size;
-        } else {
-            ASSERT(thing_subtag(*binary_header) == REFC_BINARY_SUBTAG);
+                result->iovec_len += 1;
+                result->onheap_size += size;
+            } else {
+                ASSERT(thing_subtag(*binary_header) == REFC_BINARY_SUBTAG);
 
-            result->iovec_len += 1 + size / MAX_SYSIOVEC_IOVLEN;
-            result->offheap_size += size;
+                result->iovec_len += 1 + size / MAX_SYSIOVEC_IOVLEN;
+                result->offheap_size += size;
+            }
         }
 
         result->sublist_length += 1;
         lookahead = CDR(cell);
 
-        if(result->sublist_length >= max_length) {
+        if (result->sublist_length >= max_length) {
             break;
         }
     }
@@ -3385,6 +3390,10 @@ static void inspect_raw_binary_data(Eterm binary, ErlNifBinary *result) {
     if (thing_subtag(*parent_header) == REFC_BINARY_SUBTAG) {
         ProcBin *pb = (ProcBin*)parent_header;
 
+        if (pb->flags & (PB_IS_WRITABLE | PB_ACTIVE_WRITER)) {
+            erts_emasculate_writable_binary(pb);
+        }
+
         ASSERT(pb->val != NULL);
         ASSERT(byte_offset < pb->size);
         ASSERT(&pb->bytes[byte_offset] >= (byte*)(pb->val)->orig_bytes);
@@ -3428,7 +3437,7 @@ static int fill_iovec_with_slice(ErlNifEnv *env,
 
         /* If this isn't a refc binary, copy its contents to the onheap buffer
          * and reference that instead. */
-        if (raw_data.ref_bin == NULL) {
+        if (raw_data.size > 0 && raw_data.ref_bin == NULL) {
             ASSERT(onheap_offset < onheap_data.size);
             ASSERT(slice->onheap_size > 0);
 
@@ -3439,12 +3448,11 @@ static int fill_iovec_with_slice(ErlNifEnv *env,
             raw_data.ref_bin = onheap_data.ref_bin;
         }
 
-        ASSERT(raw_data.ref_bin != NULL);
-
         while (raw_data.size > 0) {
             UWord chunk_len = MIN(raw_data.size, MAX_SYSIOVEC_IOVLEN);
 
             ASSERT(iovec_idx < iovec->iovcnt);
+            ASSERT(raw_data.ref_bin != NULL);
 
             iovec->iov[iovec_idx].iov_base = raw_data.data;
             iovec->iov[iovec_idx].iov_len = chunk_len;
@@ -3597,6 +3605,55 @@ int enif_ioq_deq(ErlNifIOQueue *q, size_t elems, size_t *size)
     return 1;
 }
 
+int enif_ioq_peek_head(ErlNifEnv *env, ErlNifIOQueue *q, size_t *size, ERL_NIF_TERM *bin_term) {
+    SysIOVec *iov_entry;
+    Binary *ref_bin;
+
+    if (q->size == 0) {
+        return 0;
+    }
+
+    ASSERT(q->b_head != q->b_tail && q->v_head != q->v_tail);
+
+    ref_bin = &q->b_head[0]->nif;
+    iov_entry = &q->v_head[0];
+
+    if (size != NULL) {
+        *size = iov_entry->iov_len;
+    }
+
+    if (iov_entry->iov_len > ERL_ONHEAP_BIN_LIMIT) {
+        ProcBin *pb = (ProcBin*)alloc_heap(env, PROC_BIN_SIZE);
+
+        pb->thing_word = HEADER_PROC_BIN;
+        pb->next = MSO(env->proc).first;
+        pb->val = ref_bin;
+        pb->flags = 0;
+
+        ASSERT((byte*)iov_entry->iov_base >= (byte*)ref_bin->orig_bytes);
+        ASSERT(iov_entry->iov_len <= ref_bin->orig_size);
+
+        pb->bytes = (byte*)iov_entry->iov_base;
+        pb->size = iov_entry->iov_len;
+
+        MSO(env->proc).first = (struct erl_off_heap_header*) pb;
+        OH_OVERHEAD(&(MSO(env->proc)), pb->size / sizeof(Eterm));
+
+        erts_refc_inc(&ref_bin->intern.refc, 2);
+        *bin_term = make_binary(pb);
+    } else {
+        ErlHeapBin* hb = (ErlHeapBin*)alloc_heap(env, heap_bin_size(iov_entry->iov_len));
+
+        hb->thing_word = header_heap_bin(iov_entry->iov_len);
+        hb->size = iov_entry->iov_len;
+
+        sys_memcpy(hb->data, iov_entry->iov_base, iov_entry->iov_len);
+        *bin_term = make_binary(hb);
+    }
+
+    return 1;
+}
+
 SysIOVec *enif_ioq_peek(ErlNifIOQueue *q, int *iovlen)
 {
     return erts_ioq_peekq(q, iovlen);
diff --git a/erts/emulator/beam/erl_nif.h b/erts/emulator/beam/erl_nif.h
index d195721054..053f7673c4 100644
--- a/erts/emulator/beam/erl_nif.h
+++ b/erts/emulator/beam/erl_nif.h
@@ -50,10 +50,12 @@
 ** 2.9: 18.2 enif_getenv
 ** 2.10: Time API
 ** 2.11: 19.0 enif_snprintf 
-** 2.12: 20.0 add enif_queue
+** 2.12: 20.0 add enif_select, enif_open_resource_type_x
+** 2.13: 20.1 add enif_ioq
+** 2.14: 21.0 add enif_ioq_peek_head
 */
 #define ERL_NIF_MAJOR_VERSION 2
-#define ERL_NIF_MINOR_VERSION 12
+#define ERL_NIF_MINOR_VERSION 14
 
 /*
  * The emulator will refuse to load a nif-lib with a major version
diff --git a/erts/emulator/beam/erl_nif_api_funcs.h b/erts/emulator/beam/erl_nif_api_funcs.h
index 9e573307d8..3750fd9b68 100644
--- a/erts/emulator/beam/erl_nif_api_funcs.h
+++ b/erts/emulator/beam/erl_nif_api_funcs.h
@@ -198,6 +198,7 @@ ERL_NIF_API_FUNC_DECL(SysIOVec*,enif_ioq_peek,(ErlNifIOQueue *q, int *iovlen));
 ERL_NIF_API_FUNC_DECL(int,enif_inspect_iovec,(ErlNifEnv *env, size_t max_length, ERL_NIF_TERM iovec_term, ERL_NIF_TERM *tail, ErlNifIOVec **iovec));
 ERL_NIF_API_FUNC_DECL(void,enif_free_iovec,(ErlNifIOVec *iov));
 
+ERL_NIF_API_FUNC_DECL(int,enif_ioq_peek_head,(ErlNifEnv *env, ErlNifIOQueue *q, size_t *size, ERL_NIF_TERM *head));
 
 /*
 ** ADD NEW ENTRIES HERE (before this comment) !!!
@@ -373,6 +374,7 @@ ERL_NIF_API_FUNC_DECL(void,enif_free_iovec,(ErlNifIOVec *iov));
 #  define enif_ioq_peek ERL_NIF_API_FUNC_MACRO(enif_ioq_peek)
 #  define enif_inspect_iovec ERL_NIF_API_FUNC_MACRO(enif_inspect_iovec)
 #  define enif_free_iovec ERL_NIF_API_FUNC_MACRO(enif_free_iovec)
+#  define enif_ioq_peek_head ERL_NIF_API_FUNC_MACRO(enif_ioq_peek_head)
 
 /*
 ** ADD NEW ENTRIES HERE (before this comment)
diff --git a/erts/emulator/beam/erl_node_tables.c b/erts/emulator/beam/erl_node_tables.c
index 0f3dfa797c..eaf133f5c0 100644
--- a/erts/emulator/beam/erl_node_tables.c
+++ b/erts/emulator/beam/erl_node_tables.c
@@ -39,9 +39,11 @@ erts_rwmtx_t erts_node_table_rwmtx;
 
 DistEntry *erts_hidden_dist_entries;
 DistEntry *erts_visible_dist_entries;
+DistEntry *erts_pending_dist_entries;
 DistEntry *erts_not_connected_dist_entries; /* including erts_this_dist_entry */
 Sint erts_no_of_hidden_dist_entries;
 Sint erts_no_of_visible_dist_entries;
+Sint erts_no_of_pending_dist_entries;
 Sint erts_no_of_not_connected_dist_entries; /* including erts_this_dist_entry */
 
 DistEntry *erts_this_dist_entry;
@@ -101,7 +103,9 @@ void
 erts_ref_dist_entry(DistEntry *dep)
 {
     ASSERT(dep);
-    de_refc_inc(dep, 1);
+    if (de_refc_inc_read(dep, 1) == 1) {
+        de_refc_inc(dep, 2);  /* Pending delete */
+    }
 }
 
 void
@@ -139,9 +143,7 @@ dist_table_cmp(void *dep1, void *dep2)
 static void*
 dist_table_alloc(void *dep_tmpl)
 {
-#ifdef DEBUG
     erts_aint_t refc;
-#endif
     Eterm sysname;
     Binary *bin;
     DistEntry *dep;
@@ -158,13 +160,8 @@ dist_table_alloc(void *dep_tmpl)
 
     dist_entries++;
 
-#ifdef DEBUG
-    refc =
-#else
-    (void)
-#endif
-        de_refc_dec_read(dep, -1);
-    ASSERT(refc == -1);
+    refc = de_refc_dec_read(dep, -1);
+    ASSERT(refc == -1); (void)refc;
 
     dep->prev				= NULL;
     erts_rwmtx_init_opt(&dep->rwmtx, &rwmtx_opt, "dist_entry", sysname,
@@ -202,6 +199,7 @@ dist_table_alloc(void *dep_tmpl)
     erts_port_task_handle_init(&dep->dist_cmd);
     dep->send				= NULL;
     dep->cache				= NULL;
+    dep->transcode_ctx                  = NULL;
 
     /* Link in */
 
@@ -224,6 +222,8 @@ dist_table_free(void *vdep)
 {
     DistEntry *dep = (DistEntry *) vdep;
 
+    ASSERT(de_refc_read(dep, -1) == -1);
+    ASSERT(dep->status == 0);
     ASSERT(is_nil(dep->cid));
     ASSERT(dep->nlinks == NULL);
     ASSERT(dep->node_links == NULL);
@@ -384,56 +384,92 @@ erts_dhandle_to_dist_entry(Eterm dhandle)
 }
 
 Eterm
-erts_make_dhandle(Process *c_p, DistEntry *dep)
+erts_build_dhandle(Eterm **hpp, ErlOffHeap* ohp, DistEntry *dep)
 {
-    Binary *bin;
-    Eterm *hp;
-
-    bin = ErtsDistEntry2Bin(dep);
+    Binary *bin = ErtsDistEntry2Bin(dep);
     ASSERT(bin);
     ASSERT(ERTS_MAGIC_BIN_DESTRUCTOR(bin) == erts_dist_entry_destructor);
-    hp = HAlloc(c_p, ERTS_MAGIC_REF_THING_SIZE);
-    return erts_mk_magic_ref(&hp, &c_p->off_heap, bin);
+    return erts_mk_magic_ref(hpp, ohp, bin);
+}
+
+Eterm
+erts_make_dhandle(Process *c_p, DistEntry *dep)
+{
+    Eterm *hp = HAlloc(c_p, ERTS_MAGIC_REF_THING_SIZE);
+    return erts_build_dhandle(&hp, &c_p->off_heap, dep);
 }
 
-static void try_delete_dist_entry(void *vbin);
+static void start_timer_delete_dist_entry(void *vdep);
+static void prepare_try_delete_dist_entry(void *vdep);
+static void try_delete_dist_entry(DistEntry*);
+
+static void schedule_delete_dist_entry(DistEntry* dep)
+{
+    /*
+     * Here we need thread progress to wait for other threads, that may have
+     * done lookup without refc++, to do either refc++ or drop their refs.
+     *
+     * Note that timeouts do not guarantee thread progress.
+     */
+    erts_schedule_thr_prgr_later_op(start_timer_delete_dist_entry,
+                                    dep, &dep->later_op);
+}
 
 static void
-prepare_try_delete_dist_entry(void *vbin)
+start_timer_delete_dist_entry(void *vdep)
 {
-    Binary *bin = (Binary *) vbin;
-    DistEntry *dep = ErtsBin2DistEntry(bin);
-    Uint size;
+    if (node_tab_delete_delay == 0) {
+        prepare_try_delete_dist_entry(vdep);
+    }
+    else {
+        ASSERT(node_tab_delete_delay > 0);
+        erts_start_timer_callback(node_tab_delete_delay,
+                                  prepare_try_delete_dist_entry,
+                                  vdep);
+    }
+}
+
+static void
+prepare_try_delete_dist_entry(void *vdep)
+{
+    DistEntry *dep = vdep;
     erts_aint_t refc;
 
+    /*
+     * Time has passed since we decremented refc to zero and DistEntry may
+     * have been revived. Do a fast check without table lock first.
+     */
     refc = de_refc_read(dep, 0);
-    if (refc > 0)
-        return;
-
-    size = ERTS_MAGIC_BIN_SIZE(sizeof(DistEntry));
-    erts_schedule_thr_prgr_later_cleanup_op(try_delete_dist_entry,
-                                            vbin, &dep->later_op, size);
+    if (refc == 0) {
+        try_delete_dist_entry(dep);
+    }
+    else {
+        /*
+         * Someone has done lookup and done refc++ for us.
+         */
+        refc = de_refc_dec_read(dep, 0);
+        if (refc == 0)
+            schedule_delete_dist_entry(dep);
+    }
 }
 
-static void try_delete_dist_entry(void *vbin)
+static void try_delete_dist_entry(DistEntry* dep)
 {
-    Binary *bin = (Binary *) vbin;
-    DistEntry *dep = ErtsBin2DistEntry(bin);
     erts_aint_t refc;
 
     erts_rwmtx_rwlock(&erts_dist_table_rwmtx);
     /*
      * Another thread might have looked up this dist entry after
      * we decided to delete it (refc became zero). If so, the other
-     * thread incremented refc twice. Once for the new reference
-     * and once for this thread.
+     * thread incremented refc one extra step for this thread.
      *
-     * If refc reach -1, no one has used the entry since we
-     * set up the timer. Delete the entry.
+     * If refc reach -1, no one has done lookup and no one can do lookup
+     * as we have table lock. Delete the entry.
      *
-     * If refc reach 0, the entry is currently not in use
-     * but has been used since we set up the timer. Set up a
-     * new timer.
+     * If refc reach 0, someone raced us and either
+     *  (1) did lookup with own refc++ and already released it again
+     *  (2) did lookup without own refc++
+     * Schedule new delete operation.
      *
      * If refc > 0, the entry is in use. Keep the entry.
      */
@@ -443,12 +479,7 @@ static void try_delete_dist_entry(void *vbin)
     erts_rwmtx_rwunlock(&erts_dist_table_rwmtx);
 
     if (refc == 0) {
-        if (node_tab_delete_delay == 0)
-            prepare_try_delete_dist_entry(vbin);
-        else if (node_tab_delete_delay > 0)
-            erts_start_timer_callback(node_tab_delete_delay,
-                                      prepare_try_delete_dist_entry,
-                                      vbin);
+        schedule_delete_dist_entry(dep);
     }
 }
 
@@ -462,12 +493,7 @@ int erts_dist_entry_destructor(Binary *bin)
     if (refc == -1)
         return 1; /* Allow deallocation of structure... */
 
-    if (node_tab_delete_delay == 0)
-        prepare_try_delete_dist_entry((void *) bin);
-    else if (node_tab_delete_delay > 0)
-        erts_start_timer_callback(node_tab_delete_delay,
-                                  prepare_try_delete_dist_entry,
-                                  (void *) bin);
+    schedule_delete_dist_entry(dep);
 
     return 0;
 }
@@ -498,12 +524,17 @@ erts_dist_table_size(void)
 	i++;
     ASSERT(i == erts_no_of_hidden_dist_entries);
     i = 0;
+    for(dep = erts_pending_dist_entries; dep; dep = dep->next)
+        i++;
+    ASSERT(i == erts_no_of_pending_dist_entries);
+    i = 0;
     for(dep = erts_not_connected_dist_entries; dep; dep = dep->next)
 	i++;
     ASSERT(i == erts_no_of_not_connected_dist_entries);
 
     ASSERT(dist_entries == (erts_no_of_visible_dist_entries
 			    + erts_no_of_hidden_dist_entries
+                            + erts_no_of_pending_dist_entries
 			    + erts_no_of_not_connected_dist_entries));
 #endif
 
@@ -518,43 +549,46 @@ erts_dist_table_size(void)
 void
 erts_set_dist_entry_not_connected(DistEntry *dep)
 {
+    DistEntry** head;
+
     ERTS_LC_ASSERT(erts_lc_is_de_rwlocked(dep));
     erts_rwmtx_rwlock(&erts_dist_table_rwmtx);
 
     ASSERT(dep != erts_this_dist_entry);
-    ASSERT(is_internal_port(dep->cid) || is_internal_pid(dep->cid));
-
-    if(dep->flags & DFLAG_PUBLISHED) {
-	if(dep->prev) {
-	    ASSERT(is_in_de_list(dep, erts_visible_dist_entries));
-	    dep->prev->next = dep->next;
-	}
-	else {
-	    ASSERT(erts_visible_dist_entries == dep);
-	    erts_visible_dist_entries = dep->next;
-	}
 
-	ASSERT(erts_no_of_visible_dist_entries > 0);
-	erts_no_of_visible_dist_entries--;
+    if (dep->status & ERTS_DE_SFLG_PENDING) {
+        ASSERT(is_nil(dep->cid));
+        ASSERT(erts_no_of_pending_dist_entries > 0);
+        erts_no_of_pending_dist_entries--;
+        head = &erts_pending_dist_entries;
     }
     else {
-	if(dep->prev) {
-	    ASSERT(is_in_de_list(dep, erts_hidden_dist_entries));
-	    dep->prev->next = dep->next;
-	}
-	else {
-	    ASSERT(erts_hidden_dist_entries == dep);
-	    erts_hidden_dist_entries = dep->next;
-	}
-
-	ASSERT(erts_no_of_hidden_dist_entries > 0);
-	erts_no_of_hidden_dist_entries--;
+        ASSERT(dep->status != 0);
+        ASSERT(is_internal_port(dep->cid) || is_internal_pid(dep->cid));
+        if (dep->flags & DFLAG_PUBLISHED) {
+            ASSERT(erts_no_of_visible_dist_entries > 0);
+            erts_no_of_visible_dist_entries--;
+            head = &erts_visible_dist_entries;
+        }
+        else {
+            ASSERT(erts_no_of_hidden_dist_entries > 0);
+            erts_no_of_hidden_dist_entries--;
+            head = &erts_hidden_dist_entries;
+        }
     }
 
+    if(dep->prev) {
+        ASSERT(is_in_de_list(dep, *head));
+        dep->prev->next = dep->next;
+    }
+    else {
+        ASSERT(*head == dep);
+        *head = dep->next;
+    }
     if(dep->next)
 	dep->next->prev = dep->prev;
 
-    dep->status &= ~ERTS_DE_SFLG_CONNECTED;
+    dep->status &= ~(ERTS_DE_SFLG_PENDING | ERTS_DE_SFLG_CONNECTED);
     dep->flags = 0;
     dep->prev = NULL;
     dep->cid = NIL;
@@ -570,46 +604,87 @@ erts_set_dist_entry_not_connected(DistEntry *dep)
 }
 
 void
+erts_set_dist_entry_pending(DistEntry *dep)
+{
+    ERTS_LC_ASSERT(erts_lc_is_de_rwlocked(dep));
+    erts_rwmtx_rwlock(&erts_dist_table_rwmtx);
+
+    ASSERT(dep != erts_this_dist_entry);
+    ASSERT(dep->status == 0);
+    ASSERT(is_nil(dep->cid));
+
+    if(dep->prev) {
+        ASSERT(is_in_de_list(dep, erts_not_connected_dist_entries));
+        dep->prev->next = dep->next;
+    }
+    else {
+        ASSERT(dep == erts_not_connected_dist_entries);
+        erts_not_connected_dist_entries = dep->next;
+    }
+
+    if(dep->next)
+	dep->next->prev = dep->prev;
+
+    erts_no_of_not_connected_dist_entries--;
+
+    dep->status = ERTS_DE_SFLG_PENDING;
+    dep->flags = (DFLAG_DIST_MANDATORY | DFLAG_DIST_HOPEFULLY);
+    dep->connection_id = (dep->connection_id + 1) & ERTS_DIST_CON_ID_MASK;
+
+    dep->prev = NULL;
+    dep->next = erts_pending_dist_entries;
+    if(erts_pending_dist_entries) {
+	ASSERT(erts_pending_dist_entries->prev == NULL);
+	erts_pending_dist_entries->prev = dep;
+    }
+    erts_pending_dist_entries = dep;
+    erts_no_of_pending_dist_entries++;
+    erts_rwmtx_rwunlock(&erts_dist_table_rwmtx);
+}
+
+void
 erts_set_dist_entry_connected(DistEntry *dep, Eterm cid, Uint flags)
 {
+    erts_aint32_t set_qflgs;
+
     ERTS_LC_ASSERT(erts_lc_is_de_rwlocked(dep));
     erts_rwmtx_rwlock(&erts_dist_table_rwmtx);
 
     ASSERT(dep != erts_this_dist_entry);
     ASSERT(is_nil(dep->cid));
+    ASSERT(dep->status & ERTS_DE_SFLG_PENDING);
     ASSERT(is_internal_port(cid) || is_internal_pid(cid));
 
     if(dep->prev) {
-	ASSERT(is_in_de_list(dep, erts_not_connected_dist_entries));
+	ASSERT(is_in_de_list(dep, erts_pending_dist_entries));
 	dep->prev->next = dep->next;
     }
     else {
-	ASSERT(erts_not_connected_dist_entries == dep);
-	erts_not_connected_dist_entries = dep->next;
+	ASSERT(erts_pending_dist_entries == dep);
+	erts_pending_dist_entries = dep->next;
     }
 
     if(dep->next)
 	dep->next->prev = dep->prev;
 
-    ASSERT(erts_no_of_not_connected_dist_entries > 0);
-    erts_no_of_not_connected_dist_entries--;
+    ASSERT(erts_no_of_pending_dist_entries > 0);
+    erts_no_of_pending_dist_entries--;
 
+    dep->status &= ~ERTS_DE_SFLG_PENDING;
     dep->status |= ERTS_DE_SFLG_CONNECTED;
-    dep->flags = flags;
+    dep->flags = flags & ~DFLAG_NO_MAGIC;
     dep->cid = cid;
     erts_atomic_set_nob(&dep->input_handler,
                             (erts_aint_t) cid);
 
-    dep->connection_id++;
-    dep->connection_id &= ERTS_DIST_EXT_CON_ID_MASK;
     dep->prev = NULL;
 
     erts_atomic64_set_nob(&dep->in, 0);
     erts_atomic64_set_nob(&dep->out, 0);
-    erts_atomic32_set_nob(&dep->qflgs,
-                          (is_internal_port(cid)
-                           ? ERTS_DE_QFLG_PORT_CTRL
-                           : ERTS_DE_QFLG_PROC_CTRL));
+    set_qflgs = (is_internal_port(cid) ?
+                 ERTS_DE_QFLG_PORT_CTRL : ERTS_DE_QFLG_PROC_CTRL);
+    erts_atomic32_read_bor_nob(&dep->qflgs, set_qflgs);
+
     if(flags & DFLAG_PUBLISHED) {
 	dep->next = erts_visible_dist_entries;
 	if(erts_visible_dist_entries) {
@@ -929,9 +1004,11 @@ void erts_init_node_tables(int dd_sec)
 
     erts_hidden_dist_entries				= NULL;
     erts_visible_dist_entries				= NULL;
+    erts_pending_dist_entries			        = NULL;
     erts_not_connected_dist_entries			= NULL;
     erts_no_of_hidden_dist_entries			= 0;
     erts_no_of_visible_dist_entries			= 0;
+    erts_no_of_pending_dist_entries			= 0;
     erts_no_of_not_connected_dist_entries		= 0;
 
     node_tmpl.sysname = am_Noname;
@@ -1057,6 +1134,7 @@ typedef struct {
 typedef struct dist_referrer_ {
     struct dist_referrer_ *next;
     int heap_ref;
+    int ets_ref;
     int node_ref;
     int ctrl_ref;
     int system_ref;
@@ -1175,10 +1253,11 @@ insert_dist_referrer(ReferredDist *referred_dist,
 	else {
 	    Uint *hp = &drp->id_heap[0];
 	    ASSERT(is_tuple(id));
-	    drp->id = copy_struct(id, size_object(id), &hp, NULL);
+            drp->id = copy_struct(id, size_object(id), &hp, NULL);
 	}
 	drp->creation = creation;
 	drp->heap_ref = 0;
+        drp->ets_ref = 0;
 	drp->node_ref = 0;
 	drp->ctrl_ref = 0;
 	drp->system_ref = 0;
@@ -1188,6 +1267,7 @@ insert_dist_referrer(ReferredDist *referred_dist,
     case NODE_REF:	drp->node_ref++;	break;
     case CTRL_REF:	drp->ctrl_ref++;	break;
     case HEAP_REF:	drp->heap_ref++;	break;
+    case ETS_REF:	drp->ets_ref++;	        break;
     case SYSTEM_REF:	drp->system_ref++;	break;
     default:		ASSERT(0);
     }
@@ -1300,6 +1380,11 @@ insert_offheap2(ErlOffHeap *oh, void *arg)
     (((Bin)->intern.flags & BIN_FLAG_MAGIC)                             \
      && ERTS_MAGIC_BIN_DESTRUCTOR((Bin)) == erts_dist_entry_destructor)
 
+#define IsSendCtxBinary(Bin)                                            \
+    (((Bin)->intern.flags & BIN_FLAG_MAGIC)                             \
+     && ERTS_MAGIC_BIN_DESTRUCTOR((Bin)) == erts_dsend_context_dtor)
+
+
 static void
 insert_offheap(ErlOffHeap *oh, int type, Eterm id)
 {
@@ -1336,7 +1421,12 @@ insert_offheap(ErlOffHeap *oh, int type, Eterm id)
 		    inserted_bins = nib;
 		    UnUseTmpHeapNoproc(BIG_UINT_HEAP_SIZE);
 		}
-	    }		
+	    }
+            else if (IsSendCtxBinary(u.mref->mb)) {
+                ErtsSendContext* ctx = ERTS_MAGIC_BIN_DATA(u.mref->mb);
+                if (ctx->deref_dep)
+                    insert_dist_entry(ctx->dep, type, id, 0);
+            }
 	    break;
 	case REFC_BINARY_SUBTAG:
 	case FUN_SUBTAG:
@@ -1463,9 +1553,9 @@ insert_delayed_delete_node(void *state,
 }
 
 static void
-insert_thr_prgr_delete_dist_entry(void *arg, ErtsThrPrgrVal thr_prgr, void *vbin)
+insert_thr_prgr_delete_dist_entry(void *arg, ErtsThrPrgrVal thr_prgr, void *vdep)
 {
-    DistEntry *dep = ErtsBin2DistEntry(vbin);
+    DistEntry *dep = vdep;
     Eterm heap[3];
     insert_dist_entry(dep,
 		      SYSTEM_REF,
@@ -1476,9 +1566,9 @@ insert_thr_prgr_delete_dist_entry(void *arg, ErtsThrPrgrVal thr_prgr, void *vbin
 static void
 insert_delayed_delete_dist_entry(void *state,
 				 ErtsMonotonicTime timeout_pos,
-				 void *vbin)
+				 void *vdep)
 {
-    DistEntry *dep = ErtsBin2DistEntry(vbin);
+    DistEntry *dep = vdep;
     Eterm heap[3];
     insert_dist_entry(dep,
 		      SYSTEM_REF,
@@ -1520,7 +1610,7 @@ setup_reference_table(void)
     erts_debug_callback_timer_foreach(prepare_try_delete_dist_entry,
 				      insert_delayed_delete_dist_entry,
 				      NULL);
-    erts_debug_later_op_foreach(try_delete_dist_entry,
+    erts_debug_later_op_foreach(start_timer_delete_dist_entry,
                                 insert_thr_prgr_delete_dist_entry,
                                 NULL);
 
@@ -1686,6 +1776,15 @@ setup_reference_table(void)
 	    insert_monitors(dep->monitors, dep->sysname);
     }
 
+    for(dep = erts_pending_dist_entries; dep; dep = dep->next) {
+        if(dep->nlinks)
+            insert_links2(dep->nlinks, dep->sysname);
+        if(dep->node_links)
+            insert_links(dep->node_links, dep->sysname);
+        if(dep->monitors)
+            insert_monitors(dep->monitors, dep->sysname);
+    }
+
     /* Not connected dist entries should not have any links,
        but inspect them anyway */
     for(dep = erts_not_connected_dist_entries; dep; dep = dep->next) {
@@ -1855,6 +1954,10 @@ reference_table_term(Uint **hpp, ErlOffHeap *ohp, Uint *szp)
 		tup = MK_2TUP(AM_heap, MK_UINT(drp->heap_ref));
 		drl = MK_CONS(tup, drl);
 	    }
+            if(drp->ets_ref) {
+                tup = MK_2TUP(AM_ets, MK_UINT(drp->ets_ref));
+                drl = MK_CONS(tup, drl);
+            }
 	    if(drp->system_ref) {
 		tup = MK_2TUP(AM_system, MK_UINT(drp->system_ref));
 		drl = MK_CONS(tup, drl);
@@ -1871,12 +1974,17 @@ reference_table_term(Uint **hpp, ErlOffHeap *ohp, Uint *szp)
 	    else if (is_tuple(drp->id)) {
 		Eterm *t;
 		ASSERT(drp->system_ref && !drp->node_ref
-		       && !drp->ctrl_ref && !drp->heap_ref);
+		       && !drp->ctrl_ref && !drp->heap_ref && !drp->ets_ref);
 		t = tuple_val(drp->id);
 		ASSERT(2 == arityval(t[0]));
 		tup = MK_2TUP(t[1], t[2]);
 	    }
-	    else {
+	    else if (drp->ets_ref) {
+                ASSERT(!drp->heap_ref && !drp->node_ref &&
+                       !drp->ctrl_ref && !drp->system_ref);
+                tup = MK_2TUP(AM_ets, drp->id);
+            }
+            else {
 		ASSERT(!drp->ctrl_ref && drp->node_ref);
 		ASSERT(is_atom(drp->id));
 		tup = MK_2TUP(drp->id, MK_UINT(drp->creation));
diff --git a/erts/emulator/beam/erl_node_tables.h b/erts/emulator/beam/erl_node_tables.h
index 3bba673435..8d29c83e15 100644
--- a/erts/emulator/beam/erl_node_tables.h
+++ b/erts/emulator/beam/erl_node_tables.h
@@ -57,11 +57,9 @@
  
 #define ERST_INTERNAL_CHANNEL_NO 0
 
-#define ERTS_DE_SFLG_CONNECTED			(((Uint32) 1) <<  0)
-#define ERTS_DE_SFLG_EXITING			(((Uint32) 1) <<  1)
-
-#define ERTS_DE_SFLGS_ALL			(ERTS_DE_SFLG_CONNECTED \
-						 | ERTS_DE_SFLG_EXITING)
+#define ERTS_DE_SFLG_PENDING			(((Uint32) 1) <<  0)
+#define ERTS_DE_SFLG_CONNECTED			(((Uint32) 1) <<  1)
+#define ERTS_DE_SFLG_EXITING			(((Uint32) 1) <<  2)
 
 #define ERTS_DE_QFLG_BUSY			(((erts_aint32_t) 1) <<  0)
 #define ERTS_DE_QFLG_EXIT			(((erts_aint32_t) 1) <<  1)
@@ -85,10 +83,12 @@ typedef struct ErtsDistOutputBuf_ ErtsDistOutputBuf;
 struct ErtsDistOutputBuf_ {
 #ifdef DEBUG
     Uint dbg_pattern;
+    byte *alloc_endp;
 #endif
     ErtsDistOutputBuf *next;
     byte *extp;
     byte *ext_endp;
+    byte *msg_start;
     byte data[1];
 };
 
@@ -109,8 +109,6 @@ struct ErtsProcList_;
  *   unlock mutexes with higher numbers before mutexes with higher numbers.
  */
 
-struct erl_link;
-
 typedef struct dist_entry_ {
     HashBucket hash_bucket;     /* Hash bucket */
     struct dist_entry_ *next;	/* Next entry in dist_table (not sorted) */
@@ -159,6 +157,8 @@ typedef struct dist_entry_ {
     struct cache* cache;	/* The atom cache */
 
     ErtsThrPrgrLaterOp later_op;
+
+    struct transcode_context* transcode_ctx;
 } DistEntry;
 
 typedef struct erl_node_ {
@@ -177,9 +177,11 @@ extern erts_rwmtx_t erts_node_table_rwmtx;
 
 extern DistEntry *erts_hidden_dist_entries;
 extern DistEntry *erts_visible_dist_entries;
+extern DistEntry *erts_pending_dist_entries;
 extern DistEntry *erts_not_connected_dist_entries;
 extern Sint erts_no_of_hidden_dist_entries;
 extern Sint erts_no_of_visible_dist_entries;
+extern Sint erts_no_of_pending_dist_entries;
 extern Sint erts_no_of_not_connected_dist_entries;
 
 extern DistEntry *erts_this_dist_entry;
@@ -195,6 +197,7 @@ void erts_schedule_delete_dist_entry(DistEntry *);
 Uint erts_dist_table_size(void);
 void erts_dist_table_info(fmtfn_t, void *);
 void erts_set_dist_entry_not_connected(DistEntry *);
+void erts_set_dist_entry_pending(DistEntry *);
 void erts_set_dist_entry_connected(DistEntry *, Eterm, Uint);
 ErlNode *erts_find_or_insert_node(Eterm, Uint32);
 void erts_schedule_delete_node(ErlNode *);
@@ -210,6 +213,7 @@ int erts_lc_is_de_rlocked(DistEntry *);
 #endif
 int erts_dist_entry_destructor(Binary *bin);
 DistEntry *erts_dhandle_to_dist_entry(Eterm dhandle);
+Eterm erts_build_dhandle(Eterm **hpp, ErlOffHeap*, DistEntry*);
 Eterm erts_make_dhandle(Process *c_p, DistEntry *dep);
 void erts_ref_dist_entry(DistEntry *dep);
 void erts_deref_dist_entry(DistEntry *dep);
@@ -271,5 +275,6 @@ erts_de_links_unlock(DistEntry *dep)
 #endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */
 
 void erts_debug_test_node_tab_delayed_delete(Sint64 millisecs);
+void erts_lcnt_update_distribution_locks(int enable);
 
 #endif
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index 61fdf86a56..a807d60ec7 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -3276,7 +3276,7 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq)
     erts_aint32_t aux_work = 0;
     int thr_prgr_active = 1;
     erts_aint32_t flgs;
-    ERTS_MSACC_PUSH_STATE_M();
+    ERTS_MSACC_PUSH_STATE();
 
     ERTS_LC_ASSERT(erts_lc_runq_is_locked(rq));
 
@@ -3385,9 +3385,9 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq)
                                                                  - 1) + 1;
                             } else
                                 timeout = -1;
-                            ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_SLEEP);
+                            ERTS_MSACC_SET_STATE_CACHED(ERTS_MSACC_STATE_SLEEP);
                             res = erts_tse_twait(ssi->event, timeout);
-                            ERTS_MSACC_POP_STATE_M();
+                            ERTS_MSACC_POP_STATE();
                             current_time = ERTS_SCHEDULER_IS_DIRTY(esdp) ? 0 :
                                 erts_get_monotonic_time(esdp);
                         } while (res == EINTR);
@@ -9701,7 +9701,7 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
                                      | ERTS_PROC_LOCK_STATUS
                                      | ERTS_PROC_LOCK_TRACE));
 
-            ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_OTHER);
+            ERTS_MSACC_SET_STATE_CACHED(ERTS_MSACC_STATE_OTHER);
 
             if (state & ERTS_PSFLG_FREE) {
                 if (!is_normal_sched) {
@@ -9916,7 +9916,7 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
 	    case 0:			/* No process at all */
 	    default:
 		ASSERT(qmask == 0);
-                ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_OTHER);
+                ERTS_MSACC_SET_STATE_CACHED(ERTS_MSACC_STATE_OTHER);
 		goto check_activities_to_run;
 	    }
 
@@ -10034,7 +10034,7 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
 
 	}
 
-        ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_EMULATOR);
+        ERTS_MSACC_SET_STATE_CACHED(ERTS_MSACC_STATE_EMULATOR);
 
 
 	if (flags & ERTS_RUNQ_FLG_PROTECTED)
@@ -10824,7 +10824,7 @@ request_system_task(Process *c_p, Eterm requester, Eterm target,
 	    goto badarg;
 	req_type = tp[1];
 	req_id = tp[2];
-	req_id_sz = is_immed(req_id) ? req_id : size_object(req_id);
+	req_id_sz = is_immed(req_id) ? 0 : size_object(req_id);
 	tot_sz = req_id_sz;
 	for (i = 0; i < ERTS_MAX_PROC_SYS_TASK_ARGS; i++) {
 	    int tix = 3 + i;
@@ -12476,9 +12476,9 @@ send_exit_signal(Process *c_p,		/* current process if and only
 
     if ((state & ERTS_PSFLG_TRAP_EXIT)
 	&& (reason != am_kill || (flags & ERTS_XSIG_FLG_IGN_KILL))) {
-        /* have to release the status lock in order to send the exit message */
-        erts_proc_unlock(rp, *rp_locks & ERTS_PROC_LOCKS_XSIG_SEND);
-        *rp_locks &= ~ERTS_PROC_LOCKS_XSIG_SEND;
+        /* have to release the status and trace lock in order to send the exit message */
+        erts_proc_unlock(rp, *rp_locks & (ERTS_PROC_LOCKS_XSIG_SEND|ERTS_PROC_LOCK_TRACE));
+        *rp_locks &= ~(ERTS_PROC_LOCKS_XSIG_SEND|ERTS_PROC_LOCK_TRACE);
         if (have_seqtrace(token) && token_update)
 	    seq_trace_update_send(token_update);
 	if (is_value(exit_tuple))
@@ -12659,9 +12659,11 @@ static void doit_exit_monitor(ErtsMonitor *mon, void *vpcontext)
 		erts_de_links_unlock(dep);
 		if (rmon) {
 		    ErtsDSigData dsd;
-		    int code = erts_dsig_prepare(&dsd, dep, NULL,
-						 ERTS_DSP_NO_LOCK, 0);
-		    if (code == ERTS_DSIG_PREP_CONNECTED) {
+		    int code = erts_dsig_prepare(&dsd, dep, NULL, 0,
+						 ERTS_DSP_NO_LOCK, 0, 0);
+		    if (code == ERTS_DSIG_PREP_CONNECTED ||
+                        code == ERTS_DSIG_PREP_PENDING) {
+
 			code = erts_dsig_send_demonitor(&dsd,
 							rmon->u.pid,
 							mon->name,
@@ -12705,9 +12707,11 @@ static void doit_exit_monitor(ErtsMonitor *mon, void *vpcontext)
 		    erts_de_links_unlock(dep);
 		    if (rmon) {
 			ErtsDSigData dsd;
-			int code = erts_dsig_prepare(&dsd, dep, NULL,
-						     ERTS_DSP_NO_LOCK, 0);
-			if (code == ERTS_DSIG_PREP_CONNECTED) {
+			int code = erts_dsig_prepare(&dsd, dep, NULL, 0,
+						     ERTS_DSP_NO_LOCK, 0, 0);
+			if (code == ERTS_DSIG_PREP_CONNECTED ||
+                            code == ERTS_DSIG_PREP_PENDING) {
+
 			    code = erts_dsig_send_demonitor(&dsd,
 							    rmon->u.pid,
 							    mon->u.pid,
@@ -12764,8 +12768,8 @@ static void doit_exit_monitor(ErtsMonitor *mon, void *vpcontext)
 		erts_de_links_unlock(dep);
 		if (rmon) {
 		    ErtsDSigData dsd;
-		    int code = erts_dsig_prepare(&dsd, dep, NULL,
-						 ERTS_DSP_NO_LOCK, 0);
+		    int code = erts_dsig_prepare(&dsd, dep, NULL, 0,
+						 ERTS_DSP_NO_LOCK, 0, 0);
 		    if (code == ERTS_DSIG_PREP_CONNECTED) {
 			code = erts_dsig_send_m_exit(&dsd,
 						     mon->u.pid,
@@ -12887,14 +12891,18 @@ static void doit_exit_link(ErtsLink *lnk, void *vpcontext)
 		int code;
 		ErtsDistLinkData dld;
 		erts_remove_dist_link(&dld, p->common.id, item, dep);
-		erts_proc_lock(p, ERTS_PROC_LOCK_MAIN);
-		code = erts_dsig_prepare(&dsd, dep, p, ERTS_DSP_NO_LOCK, 0);
-		if (code == ERTS_DSIG_PREP_CONNECTED) {
-		    code = erts_dsig_send_exit_tt(&dsd, p->common.id, item,
-						  reason, SEQ_TRACE_TOKEN(p));
-		    ASSERT(code == ERTS_DSIG_SEND_OK);
-		}
-		erts_proc_unlock(p, ERTS_PROC_LOCK_MAIN);
+                if (dld.d_lnk) {
+                    erts_proc_lock(p, ERTS_PROC_LOCK_MAIN);
+                    code = erts_dsig_prepare(&dsd, dep, p, 0, ERTS_DSP_NO_LOCK, 0, 0);
+                    if (code == ERTS_DSIG_PREP_CONNECTED ||
+                        code == ERTS_DSIG_PREP_PENDING) {
+
+                        code = erts_dsig_send_exit_tt(&dsd, p->common.id, item,
+                                                      reason, SEQ_TRACE_TOKEN(p));
+                        ASSERT(code == ERTS_DSIG_SEND_OK);
+                    }
+                    erts_proc_unlock(p, ERTS_PROC_LOCK_MAIN);
+                }
 		erts_destroy_dist_link(&dld);
 	    }
 	}
diff --git a/erts/emulator/beam/erl_process_dump.c b/erts/emulator/beam/erl_process_dump.c
index 5a2c262ff1..f562fc961b 100644
--- a/erts/emulator/beam/erl_process_dump.c
+++ b/erts/emulator/beam/erl_process_dump.c
@@ -32,6 +32,7 @@
 #include "dist.h"
 #include "beam_catches.h"
 #include "erl_binary.h"
+#include "erl_map.h"
 #define ERTS_WANT_EXTERNAL_TAGS
 #include "external.h"
 
@@ -50,7 +51,14 @@ static void stack_trace_dump(fmtfn_t to, void *to_arg, Eterm* sp);
 static void print_function_from_pc(fmtfn_t to, void *to_arg, BeamInstr* x);
 static void heap_dump(fmtfn_t to, void *to_arg, Eterm x);
 static void dump_binaries(fmtfn_t to, void *to_arg, Binary* root);
+void erts_print_base64(fmtfn_t to, void *to_arg,
+                       byte* src, Uint size);
 static void dump_externally(fmtfn_t to, void *to_arg, Eterm term);
+static void mark_literal(Eterm* ptr);
+static void init_literal_areas(void);
+static void dump_literals(fmtfn_t to, void *to_arg);
+static void dump_module_literals(fmtfn_t to, void *to_arg,
+                                 ErtsLiteralArea* lit_area);
 
 static Binary* all_binaries;
 
@@ -58,14 +66,14 @@ extern BeamInstr beam_apply[];
 extern BeamInstr beam_exit[];
 extern BeamInstr beam_continue_exit[];
 
-
 void
 erts_deep_process_dump(fmtfn_t to, void *to_arg)
 {
     int i, max = erts_ptab_max(&erts_proc);
 
     all_binaries = NULL;
-    
+    init_literal_areas();
+
     for (i = 0; i < max; i++) {
 	Process *p = erts_pix2proc(i);
 	if (p && p->i != ENULL) {
@@ -75,6 +83,7 @@ erts_deep_process_dump(fmtfn_t to, void *to_arg)
        }
     }
 
+    dump_literals(to, to_arg);
     dump_binaries(to, to_arg, all_binaries);
 }
 
@@ -186,6 +195,7 @@ dump_dist_ext(fmtfn_t to, void *to_arg, ErtsDistExternal *edep)
     else {
 	byte *e;
 	size_t sz;
+
 	if (!(edep->flags & ERTS_DIST_EXT_ATOM_TRANS_TAB))
 	    erts_print(to, to_arg, "D0:");
 	else {
@@ -203,12 +213,18 @@ dump_dist_ext(fmtfn_t to, void *to_arg, ErtsDistExternal *edep)
 	else {
 	    ASSERT(*e == VERSION_MAGIC);
 	}
-
 	erts_print(to, to_arg, "E%X:", sz);
-	if (edep->flags & ERTS_DIST_EXT_DFLAG_HDR)
-	    erts_print(to, to_arg, "%02X", VERSION_MAGIC);
-	while (e < edep->ext_endp)
-	    erts_print(to, to_arg, "%02X", *e++);
+        if (edep->flags & ERTS_DIST_EXT_DFLAG_HDR) {
+            byte sbuf[3];
+            int i = 0;
+
+            sbuf[i++] = VERSION_MAGIC;
+            while (i < sizeof(sbuf) && e < edep->ext_endp) {
+                sbuf[i++] = *e++;
+            }
+            erts_print_base64(to, to_arg, sbuf, i);
+        }
+        erts_print_base64(to, to_arg, e, edep->ext_endp - e);
     }
 }
 
@@ -373,7 +389,9 @@ heap_dump(fmtfn_t to, void *to_arg, Eterm x)
 	    next = (Eterm *) x;
 	} else if (is_list(x)) {
 	    ptr = list_val(x);
-	    if (ptr[0] != OUR_NIL) {
+            if (erts_is_literal(x, ptr)) {
+                mark_literal(ptr);
+            } else if (ptr[0] != OUR_NIL) {
 		erts_print(to, to_arg, PTR_FMT ":l", ptr);
 		dump_element(to, to_arg, ptr[0]);
 		erts_putc(to, to_arg, '|');
@@ -392,7 +410,9 @@ heap_dump(fmtfn_t to, void *to_arg, Eterm x)
 
 	    ptr = boxed_val(x);
 	    hdr = *ptr;
-	    if (hdr != OUR_NIL) {	/* If not visited */
+            if (erts_is_literal(x, ptr)) {
+                mark_literal(ptr);
+            } else if (hdr != OUR_NIL) {
 		erts_print(to, to_arg, PTR_FMT ":", ptr);
 	        if (is_arity_value(hdr)) {
 		    Uint i;
@@ -433,16 +453,13 @@ heap_dump(fmtfn_t to, void *to_arg, Eterm x)
 		} else if (is_binary_header(hdr)) {
 		    Uint tag = thing_subtag(hdr);
 		    Uint size = binary_size(x);
-		    Uint i;
 
 		    if (tag == HEAP_BINARY_SUBTAG) {
 			byte* p;
 
 			erts_print(to, to_arg, "Yh%X:", size);
 			p = binary_bytes(x);
-			for (i = 0; i < size; i++) {
-			    erts_print(to, to_arg, "%02X", p[i]);
-			}
+                        erts_print_base64(to, to_arg, p, size);
 		    } else if (tag == REFC_BINARY_SUBTAG) {
 			ProcBin* pb = (ProcBin *) binary_val(x);
 			Binary* val = pb->val;
@@ -498,11 +515,77 @@ heap_dump(fmtfn_t to, void *to_arg, Eterm x)
 		    erts_print(to, to_arg, "p<%beu.%beu>\n",
 			       port_channel_no(x), port_number(x));
 		    *ptr = OUR_NIL;
+		} else if (is_map_header(hdr)) {
+                    if (is_flatmap_header(hdr)) {
+                        flatmap_t* fmp = (flatmap_t *) flatmap_val(x);
+                        Eterm* values = ptr + sizeof(flatmap_t) / sizeof(Eterm);
+                        Uint map_size = fmp->size;
+                        int i;
+
+                        erts_print(to, to_arg, "Mf" ETERM_FMT ":", map_size);
+                        dump_element(to, to_arg, fmp->keys);
+                        erts_putc(to, to_arg, ':');
+                        for (i = 0; i < map_size; i++) {
+                            dump_element(to, to_arg, values[i]);
+                            if (is_immed(values[i])) {
+                                values[i] = make_small(0);
+                            }
+                            if (i < map_size-1) {
+                                erts_putc(to, to_arg, ',');
+                            }
+                        }
+                        erts_putc(to, to_arg, '\n');
+                        *ptr = OUR_NIL;
+                        x = fmp->keys;
+                        if (map_size) {
+                            fmp->keys = (Eterm) next;
+                            next = &values[map_size-1];
+                        }
+                        continue;
+                    } else {
+                        Uint i;
+                        Uint sz = 0;
+                        Eterm* nodes = ptr + 1;
+
+                        switch (MAP_HEADER_TYPE(hdr)) {
+                        case MAP_HEADER_TAG_HAMT_HEAD_ARRAY:
+                            nodes++;
+                            sz = 16;
+                            erts_print(to, to_arg, "Mh" ETERM_FMT ":" ETERM_FMT ":",
+                                       hashmap_size(x), sz);
+                            break;
+                        case MAP_HEADER_TAG_HAMT_HEAD_BITMAP:
+                            nodes++;
+                            sz = hashmap_bitcount(MAP_HEADER_VAL(hdr));
+                            erts_print(to, to_arg, "Mh" ETERM_FMT ":" ETERM_FMT ":",
+                                       hashmap_size(x), sz);
+                            break;
+                        case MAP_HEADER_TAG_HAMT_NODE_BITMAP:
+                            sz = hashmap_bitcount(MAP_HEADER_VAL(hdr));
+                            erts_print(to, to_arg, "Mn" ETERM_FMT ":", sz);
+                            break;
+                        }
+                        *ptr = OUR_NIL;
+                        for (i = 0; i < sz; i++) {
+                            dump_element(to, to_arg, nodes[i]);
+                            if (is_immed(nodes[i])) {
+                                nodes[i] = make_small(0);
+                            }
+                            if (i < sz-1) {
+                                erts_putc(to, to_arg, ',');
+                            }
+                        }
+                        erts_putc(to, to_arg, '\n');
+                        x = nodes[0];
+                        nodes[0] = (Eterm) next;
+                        next = &nodes[sz-1];
+                        continue;
+                    }
 		} else {
 		    /*
 		     * All other we dump in the external term format.
 		     */
-			dump_externally(to, to_arg, x);
+                    dump_externally(to, to_arg, x);
 		    erts_putc(to, to_arg, '\n');
 		    *ptr = OUR_NIL;
 		}
@@ -519,16 +602,13 @@ static void
 dump_binaries(fmtfn_t to, void *to_arg, Binary* current)
 {
     while (current) {
-	long i;
-	long size = current->orig_size;
+	SWord size = current->orig_size;
 	byte* bytes = (byte*) current->orig_bytes;
 
 	erts_print(to, to_arg, "=binary:" PTR_FMT "\n", current);
 	erts_print(to, to_arg, "%X:", size);
-	for (i = 0; i < size; i++) {
-	    erts_print(to, to_arg, "%02X", bytes[i]);
-	}
-	erts_putc(to, to_arg, '\n');
+        erts_print_base64(to, to_arg, bytes, size);
+        erts_putc(to, to_arg, '\n');
 	current = (Binary *) current->intern.flags;
     }
 }
@@ -564,16 +644,284 @@ dump_externally(fmtfn_t to, void *to_arg, Eterm term)
 	}
     }
 
-    /* Do not handle maps */
-    if (is_map(term)) {
-        term = am_undefined;
-    }
-
     s = p = sbuf;
     erts_encode_ext(term, &p);
     erts_print(to, to_arg, "E%X:", p-s);
-    while (s < p) {
-	erts_print(to, to_arg, "%02X", *s++);
+    erts_print_base64(to, to_arg, sbuf, p-s);
+}
+
+/*
+ * Handle dumping of literal areas.
+ */
+
+static ErtsLiteralArea** lit_areas;
+static Uint num_lit_areas;
+
+static int compare_areas(const void * a, const void * b)
+{
+    ErtsLiteralArea** a_p = (ErtsLiteralArea **) a;
+    ErtsLiteralArea** b_p = (ErtsLiteralArea **) b;
+
+    if (*a_p < *b_p) {
+        return -1;
+    } else if (*b_p < *a_p) {
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+
+static void
+init_literal_areas(void)
+{
+    int i;
+    Module* modp;
+    ErtsCodeIndex code_ix;
+    ErtsLiteralArea** area_p;
+
+    code_ix = erts_active_code_ix();
+    erts_rlock_old_code(code_ix);
+
+    lit_areas = area_p = erts_dump_lit_areas;
+    num_lit_areas = 0;
+    for (i = 0; i < module_code_size(code_ix); i++) {
+	modp = module_code(i, code_ix);
+        if (modp == NULL) {
+            continue;
+        }
+        if (modp->curr.code_length > 0 &&
+            modp->curr.code_hdr->literal_area) {
+            *area_p++ = modp->curr.code_hdr->literal_area;
+        }
+        if (modp->old.code_length > 0 && modp->old.code_hdr->literal_area) {
+            *area_p++ = modp->old.code_hdr->literal_area;
+        }
+    }
+
+    num_lit_areas = area_p - lit_areas;
+    ASSERT(num_lit_areas <= erts_dump_num_lit_areas);
+    for (i = 0; i < num_lit_areas; i++) {
+        lit_areas[i]->off_heap = 0;
+    }
+
+    qsort(lit_areas, num_lit_areas, sizeof(ErtsLiteralArea *),
+          compare_areas);
+
+    erts_runlock_old_code(code_ix);
+}
+
+static int search_areas(const void * a, const void * b) {
+    Eterm* key = (Eterm *) a;
+    ErtsLiteralArea** b_p = (ErtsLiteralArea **) b;
+    if (key < b_p[0]->start) {
+        return -1;
+    } else if (b_p[0]->end <= key) {
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+static void mark_literal(Eterm* ptr)
+{
+    ErtsLiteralArea** ap;
+
+    ap = bsearch(ptr, lit_areas, num_lit_areas, sizeof(ErtsLiteralArea*),
+                 search_areas);
+
+    /*
+     * If the literal was created by native code, this search will not
+     * find it and ap will be NULL.
+     */
+
+    if (ap) {
+        ap[0]->off_heap = (struct erl_off_heap_header *) 1;
+    }
+}
+
+
+static void
+dump_literals(fmtfn_t to, void *to_arg)
+{
+    ErtsCodeIndex code_ix;
+    int i;
+
+    code_ix = erts_active_code_ix();
+    erts_rlock_old_code(code_ix);
+
+    erts_print(to, to_arg, "=literals\n");
+    for (i = 0; i < num_lit_areas; i++) {
+        if (lit_areas[i]->off_heap) {
+            dump_module_literals(to, to_arg, lit_areas[i]);
+        }
+    }
+
+    erts_runlock_old_code(code_ix);
+}
+
+static void
+dump_module_literals(fmtfn_t to, void *to_arg, ErtsLiteralArea* lit_area)
+{
+    Eterm* htop;
+    Eterm* hend;
+
+    htop = lit_area->start;
+    hend = lit_area->end;
+    while (htop < hend) {
+        Eterm w = *htop;
+        Eterm term;
+        Uint size;
+
+        switch (primary_tag(w)) {
+        case TAG_PRIMARY_HEADER:
+            term = make_boxed(htop);
+            erts_print(to, to_arg, PTR_FMT ":", htop);
+            if (is_arity_value(w)) {
+                Uint i;
+                Uint arity = arityval(w);
+
+                erts_print(to, to_arg, "t" ETERM_FMT ":", arity);
+                for (i = 1; i <= arity; i++) {
+                    dump_element(to, to_arg, htop[i]);
+                    if (i < arity) {
+                        erts_putc(to, to_arg, ',');
+                    }
+                }
+                erts_putc(to, to_arg, '\n');
+            } else if (w == HEADER_FLONUM) {
+                FloatDef f;
+                char sbuf[31];
+                int i;
+
+                GET_DOUBLE_DATA((htop+1), f);
+                i = sys_double_to_chars(f.fd, sbuf, sizeof(sbuf));
+                sys_memset(sbuf+i, 0, 31-i);
+                erts_print(to, to_arg, "F%X:%s\n", i, sbuf);
+            } else if (_is_bignum_header(w)) {
+                erts_print(to, to_arg, "B%T\n", term);
+            } else if (is_binary_header(w)) {
+                Uint tag = thing_subtag(w);
+                Uint size = binary_size(term);
+
+                if (tag == HEAP_BINARY_SUBTAG) {
+                    byte* p;
+
+                    erts_print(to, to_arg, "Yh%X:", size);
+                    p = binary_bytes(term);
+                    erts_print_base64(to, to_arg, p, size);
+                } else if (tag == REFC_BINARY_SUBTAG) {
+                    ProcBin* pb = (ProcBin *) binary_val(term);
+                    Binary* val = pb->val;
+
+                    if (erts_atomic_xchg_nob(&val->intern.refc, 0) != 0) {
+                        val->intern.flags = (UWord) all_binaries;
+                        all_binaries = val;
+                    }
+                    erts_print(to, to_arg,
+                               "Yc" PTR_FMT ":" PTR_FMT ":" PTR_FMT,
+                               val,
+                               pb->bytes - (byte *)val->orig_bytes,
+                               size);
+                } else if (tag == SUB_BINARY_SUBTAG) {
+                    ErlSubBin* Sb = (ErlSubBin *) binary_val(term);
+                    Eterm* real_bin;
+                    void* val;
+
+                    real_bin = boxed_val(Sb->orig);
+                    if (thing_subtag(*real_bin) == REFC_BINARY_SUBTAG) {
+                        /*
+                         * Unvisited REFC_BINARY: Point directly to
+                         * the binary.
+                         */
+                        ProcBin* pb = (ProcBin *) real_bin;
+                        val = pb->val;
+                    } else {
+                        /*
+                         * Heap binary or visited REFC binary: Point
+                         * to heap binary or ProcBin on the heap.
+                         */
+                        val = real_bin;
+                    }
+                    erts_print(to, to_arg,
+                               "Ys" PTR_FMT ":" PTR_FMT ":" PTR_FMT,
+                               val, Sb->offs, size);
+                }
+                erts_putc(to, to_arg, '\n');
+            } else if (is_map_header(w)) {
+                if (is_flatmap_header(w)) {
+                    flatmap_t* fmp = (flatmap_t *) flatmap_val(term);
+                    Eterm* values = htop + sizeof(flatmap_t) / sizeof(Eterm);
+                    Uint map_size = fmp->size;
+                    int i;
+
+                    erts_print(to, to_arg, "Mf" ETERM_FMT ":", map_size);
+                    dump_element(to, to_arg, fmp->keys);
+                    erts_putc(to, to_arg, ':');
+                    for (i = 0; i < map_size; i++) {
+                        dump_element(to, to_arg, values[i]);
+                        if (i < map_size-1) {
+                            erts_putc(to, to_arg, ',');
+                        }
+                    }
+                    erts_putc(to, to_arg, '\n');
+                } else {
+                    Uint i;
+                    Uint sz = 0;
+                    Eterm* nodes = htop + 1;
+
+                    switch (MAP_HEADER_TYPE(w)) {
+                    case MAP_HEADER_TAG_HAMT_HEAD_ARRAY:
+                        nodes++;
+                        sz = 16;
+                        erts_print(to, to_arg, "Mh" ETERM_FMT ":" ETERM_FMT ":",
+                                   hashmap_size(term), sz);
+                        break;
+                    case MAP_HEADER_TAG_HAMT_HEAD_BITMAP:
+                        nodes++;
+                        sz = hashmap_bitcount(MAP_HEADER_VAL(w));
+                        erts_print(to, to_arg, "Mh" ETERM_FMT ":" ETERM_FMT ":",
+                                   hashmap_size(term), sz);
+                        break;
+                    case MAP_HEADER_TAG_HAMT_NODE_BITMAP:
+                        sz = hashmap_bitcount(MAP_HEADER_VAL(w));
+                        erts_print(to, to_arg, "Mn" ETERM_FMT ":", sz);
+                        break;
+                    }
+                    for (i = 0; i < sz; i++) {
+                        dump_element(to, to_arg, nodes[i]);
+                        if (i < sz-1) {
+                            erts_putc(to, to_arg, ',');
+                        }
+                    }
+                    erts_putc(to, to_arg, '\n');
+                }
+            }
+            size = 1 + header_arity(w);
+            switch (w & _HEADER_SUBTAG_MASK) {
+            case MAP_SUBTAG:
+                if (is_flatmap_header(w)) {
+                    size += 1 + flatmap_get_size(htop);
+                } else {
+                    size += hashmap_bitcount(MAP_HEADER_VAL(w));
+                }
+                break;
+            case SUB_BINARY_SUBTAG:
+                size += 1;
+                break;
+            }
+            break;
+        default:
+            ASSERT(!is_header(htop[1]));
+            erts_print(to, to_arg, PTR_FMT ":l", htop);
+            dump_element(to, to_arg, htop[0]);
+            erts_putc(to, to_arg, '|');
+            dump_element(to, to_arg, htop[1]);
+            erts_putc(to, to_arg, '\n');
+            size = 2;
+            break;
+        }
+        htop += size;
     }
 }
 
diff --git a/erts/emulator/beam/erl_term.h b/erts/emulator/beam/erl_term.h
index 6daf043117..7d42d1b396 100644
--- a/erts/emulator/beam/erl_term.h
+++ b/erts/emulator/beam/erl_term.h
@@ -55,9 +55,6 @@ struct erl_node_; /* Declared in erl_node_tables.h */
 #if defined(ARCH_64)
 #  define TAG_PTR_MASK__	0x7
 #  if !defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
-#    ifdef HIPE
-#      error Hipe on 64-bit needs a real mmap as it does not support the literal tag
-#    endif
 #    define TAG_LITERAL_PTR	0x4
 #  else
 #    undef TAG_LITERAL_PTR
@@ -862,7 +859,7 @@ do {									\
   ((ErtsMRefThing *) (Hp))->mb = (Binp);				\
   ((ErtsMRefThing *) (Hp))->next = (Ohp)->first;			\
   (Ohp)->first = (struct erl_off_heap_header*) (Hp);			\
-  ASSERT(erts_is_ref_numbers_magic(&(Binp)->refn));			\
+  ASSERT(erts_is_ref_numbers_magic((Binp)->refn));			\
 } while (0)
 
 #endif /* ARCH_32 */
diff --git a/erts/emulator/beam/erl_thr_progress.h b/erts/emulator/beam/erl_thr_progress.h
index fa936b5707..8c029bcf99 100644
--- a/erts/emulator/beam/erl_thr_progress.h
+++ b/erts/emulator/beam/erl_thr_progress.h
@@ -28,7 +28,7 @@
  * Author: 	Rickard Green
  */
 
-#if !defined(ERL_THR_PROGRESS_H__TSD_TYPE__)
+#ifndef ERL_THR_PROGRESS_H__TSD_TYPE__
 #define ERL_THR_PROGRESS_H__TSD_TYPE__
 
 #include "sys.h"
diff --git a/erts/emulator/beam/erl_unicode.c b/erts/emulator/beam/erl_unicode.c
index efd2ca3db2..b7a5c45fea 100644
--- a/erts/emulator/beam/erl_unicode.c
+++ b/erts/emulator/beam/erl_unicode.c
@@ -1988,7 +1988,7 @@ char *erts_convert_filename_to_encoding(Eterm name, char *statbuf, size_t statbu
 	is_list(name) || 
 	(allow_empty && is_nil(name))) {
 	Sint need;
-	if ((need = erts_native_filename_need(name, encoding, 0)) < 0) {
+	if ((need = erts_native_filename_need(name, encoding)) < 0) {
 	    return NULL;
 	}
 	if (encoding == ERL_FILENAME_WIN_WCHAR) {
@@ -2152,7 +2152,7 @@ Eterm erts_convert_native_to_filename(Process *p, byte *bytes)
 }
 
 
-Sint erts_native_filename_need(Eterm ioterm, int encoding, int allow_null) 
+Sint erts_native_filename_need(Eterm ioterm, int encoding)
 {
     Eterm *objp;
     Eterm obj;
@@ -2195,21 +2195,19 @@ Sint erts_native_filename_need(Eterm ioterm, int encoding, int allow_null)
 	default:
 	    need = -1;
 	}
-        if (!allow_null) {
-            /*
-             * Do not allow null in
-             * the middle of filenames
-             */
-            if (need > 0) {
-                byte *name = ap->name;
-                int len = ap->len;
-                for (i = 0; i < len; i++) {
-                    if (name[i] == 0)
-                        seen_null = 1;
-                    else if (seen_null) {
-                        need = -1;
-                        break;
-                    }
+        /*
+         * Do not allow null in
+         * the middle of filenames
+         */
+        if (need > 0) {
+            byte *name = ap->name;
+            int len = ap->len;
+            for (i = 0; i < len; i++) {
+                if (name[i] == 0)
+                    seen_null = 1;
+                else if (seen_null) {
+                    need = -1;
+                    break;
                 }
             }
         }
@@ -2243,17 +2241,15 @@ L_Again:   /* Restart with sublist, old listend was pushed on stack */
 		if (is_small(obj)) { /* Always small */
 		    for(;;) {
 			Uint x = unsigned_val(obj);
-                        if (!allow_null) {
-                            /*
-                             * Do not allow null in
-                             * the middle of filenames
-                             */
-                            if (x == 0)
-                                seen_null = 1;
-                            else if (seen_null) {
-                                DESTROY_ESTACK(stack);
-                                return ((Sint) -1);
-                            }
+                        /*
+                         * Do not allow null in
+                         * the middle of filenames
+                         */
+                        if (x == 0)
+                            seen_null = 1;
+                        else if (seen_null) {
+                            DESTROY_ESTACK(stack);
+                            return ((Sint) -1);
                         }
 			switch (encoding) {
 			case ERL_FILENAME_LATIN1:
@@ -2528,6 +2524,38 @@ void erts_copy_utf8_to_utf16_little(byte *target, byte *bytes, int num_chars)
 }
 
 /*
+ * *** Requirements on Raw Filename Format ***
+ *
+ * These requirements are due to the 'filename' module
+ * in stdlib. This since it is documented that it
+ * should be able to operate on raw filenames as well
+ * as ordinary filenames.
+ *
+ * A raw filename *must* be a byte sequence where:
+ * 1. Codepoints 0-127 (7-bit ascii) *must* be encoded
+ *    as a byte with the corresponding value. That is,
+ *    the most significant bit in the byte encoding the
+ *    codepoint is never set.
+ * 2. Codepoints greater than 127 *must* be encoded
+ *    with the most significant bit set in *every* byte
+ *    encoding it.
+ *
+ * Latin1 and UTF-8 meet these requirements while
+ * UTF-16 and UTF-32 don't.
+ *
+ * On Windows filenames are natively stored as malformed
+ * UTF-16LE (lonely surrogates may appear). A more correct
+ * description than UTF-16 would be an array of 16-bit
+ * words... In order to meet the requirements of the
+ * raw file format we convert the malformed UTF-16LE to
+ * malformed UTF-8 which meet the requirements.
+ *
+ * Note that these requirements are today only OTP
+ * internal (erts-stdlib internal) requirements that
+ * could be changed.
+ */
+
+/*
  * This internal bif converts a filename to whatever format is suitable for the file driver
  * It also adds zero termination so that prim_file needn't bother with the character encoding
  * of the file driver 
@@ -2538,6 +2566,12 @@ BIF_RETTYPE prim_file_internal_name2native_1(BIF_ALIST_1)
     Sint need;
     Eterm bin_term;
     byte* bin_p;
+
+    /*
+     * See comment on "Requirements on Raw Filename Format"
+     * above.
+     */
+
     /* Prim file explicitly does not allow atoms, although we could 
        very well cope with it. Instead of letting 'file' handle them,
        it would probably be more efficient to handle them here. Subject to 
@@ -2609,7 +2643,7 @@ BIF_RETTYPE prim_file_internal_name2native_1(BIF_ALIST_1)
     } /* binary */   
 	    
 
-    if ((need = erts_native_filename_need(BIF_ARG_1, encoding, 0)) < 0) {
+    if ((need = erts_native_filename_need(BIF_ARG_1, encoding)) < 0) {
         BIF_ERROR(BIF_P,BADARG);
     }
     if (encoding == ERL_FILENAME_WIN_WCHAR) {
@@ -2644,6 +2678,11 @@ BIF_RETTYPE prim_file_internal_native2name_1(BIF_ALIST_1)
     Eterm ret;
     int mac = 0;
 
+    /*
+     * See comment on "Requirements on Raw Filename Format"
+     * above.
+     */
+
     if (is_not_binary(BIF_ARG_1)) {
 	BIF_ERROR(BIF_P,BADARG);
     }
diff --git a/erts/emulator/beam/erl_vm.h b/erts/emulator/beam/erl_vm.h
index 661538eadd..76980b5871 100644
--- a/erts/emulator/beam/erl_vm.h
+++ b/erts/emulator/beam/erl_vm.h
@@ -209,6 +209,15 @@ extern void** beam_ops;
 #  define BeamOpCodeAddr(OpCode) ((BeamInstr)beam_ops[(OpCode)])
 #endif
 
-#define BeamIsOpCode(InstrWord, OpCode) ((InstrWord) == BeamOpCodeAddr(OpCode))
+#if defined(ARCH_64) && defined(CODE_MODEL_SMALL)
+#  define BeamCodeAddr(InstrWord) ((BeamInstr)(Uint32)(InstrWord))
+#  define BeamSetCodeAddr(InstrWord, Addr) (((InstrWord) & ~((1ull << 32)-1)) | (Addr))
+#  define BeamExtraData(InstrWord) ((InstrWord) >> 32)
+#else
+#  define BeamCodeAddr(InstrWord) ((BeamInstr)(InstrWord))
+#  define BeamSetCodeAddr(InstrWord, Addr) (Addr)
+#endif
+
+#define BeamIsOpCode(InstrWord, OpCode) (BeamCodeAddr(InstrWord) == BeamOpCodeAddr(OpCode))
 
 #endif	/* __ERL_VM_H__ */
diff --git a/erts/emulator/beam/erlang_dtrace.d b/erts/emulator/beam/erlang_dtrace.d
index 237889e0f5..d0b10e0306 100644
--- a/erts/emulator/beam/erlang_dtrace.d
+++ b/erts/emulator/beam/erlang_dtrace.d
@@ -634,72 +634,6 @@ provider erlang {
      */
     probe aio_pool__get(char *, int);
 
-    /* Probes for efile_drv.c */
-
-    /**
-     * Entry into the efile_drv.c file I/O driver
-     *
-     * For a list of command numbers used by this driver, see the section
-     * "Guide to efile_drv.c probe arguments" in ../../../HOWTO/DTRACE.md.
-     * That section also contains explanation of the various integer and
-     * string arguments that may be present when any particular probe fires.
-     *
-     * NOTE: Not all Linux platforms (using SystemTap) can support
-     *       arguments beyond arg9.
-     *
-     *
-     * TODO: Adding the port string, args[10], is a pain.  Making that
-     *       port string available to all the other efile_drv.c probes
-     *       will be more pain.  Is the pain worth it?  If yes, then
-     *       add them everywhere else and grit our teeth.  If no, then
-     *       rip it out.
-     *
-     * @param thread-id number of the scheduler Pthread                   arg0
-     * @param tag number: {thread-id, tag} uniquely names a driver operation
-     * @param user-tag string                                             arg2
-     * @param command number                                              arg3
-     * @param string argument 1                                           arg4
-     * @param string argument 2                                           arg5
-     * @param integer argument 1                                          arg6
-     * @param integer argument 2                                          arg7
-     * @param integer argument 3                                          arg8
-     * @param integer argument 4                                          arg9
-     * @param port the port ID of the busy port                       args[10]
-     */
-    probe efile_drv__entry(int, int, char *, int, char *, char *,
-                           int64_t, int64_t, int64_t, int64_t, char *);
-
-    /**
-     * Entry into the driver's internal work function.  Computation here
-     * is performed by a async worker pool Pthread.
-     *
-     * @param thread-id number
-     * @param tag number
-     * @param command number
-     */
-    probe efile_drv__int_entry(int, int, int);
-
-    /**
-     * Return from the driver's internal work function.
-     *
-     * @param thread-id number
-     * @param tag number
-     * @param command number
-     */
-    probe efile_drv__int_return(int, int, int);
-
-    /**
-     * Return from the efile_drv.c file I/O driver
-     *
-     * @param thread-id number                                            arg0
-     * @param tag number                                                  arg1
-     * @param user-tag string                                             arg2
-     * @param command number                                              arg3
-     * @param Success? 1 is success, 0 is failure                         arg4
-     * @param If failure, the errno of the error.                         arg5
-     */
-    probe efile_drv__return(int, int, char *, int, int, int);
-
 
 /*
  * The set of probes called by the erlang tracer nif backend. In order
diff --git a/erts/emulator/beam/external.c b/erts/emulator/beam/external.c
index 970158933f..9cc5e71afa 100644
--- a/erts/emulator/beam/external.c
+++ b/erts/emulator/beam/external.c
@@ -122,8 +122,9 @@ static int encode_size_struct_int(struct TTBSizeContext_*, ErtsAtomCacheMap *acm
 
 static Export binary_to_term_trap_export;
 static BIF_RETTYPE binary_to_term_trap_1(BIF_ALIST_1);
-static BIF_RETTYPE binary_to_term_int(Process* p, Uint32 flags, Eterm bin, Binary* context_b,
-				      Export *bif, Eterm arg0, Eterm arg1);
+static Sint transcode_dist_obuf(ErtsDistOutputBuf*, DistEntry*, Uint32 dflags, Sint reds);
+
+
 
 void erts_init_external(void) {
     erts_init_trap_export(&term_to_binary_trap_export,
@@ -222,23 +223,10 @@ erts_destroy_atom_cache_map(ErtsAtomCacheMap *acmp)
 static ERTS_INLINE void
 insert_acache_map(ErtsAtomCacheMap *acmp, Eterm atom, Uint32 dflags)
 {
-    /*
-     * If the receiver do not understand utf8 atoms
-     * and this atom cannot be represented in latin1,
-     * we are not allowed to cache it.
-     *
-     * In this case all atoms are assumed to have
-     * latin1 encoding in the cache. By refusing it
-     * in the cache we will instead encode it using
-     * ATOM_UTF8_EXT/SMALL_ATOM_UTF8_EXT which the
-     * receiver do not recognize and tear down the
-     * connection.
-     */
-    if (acmp && acmp->sz < ERTS_MAX_INTERNAL_ATOM_CACHE_ENTRIES
-	&& ((dflags & DFLAG_UTF8_ATOMS)
-	    || atom_tab(atom_val(atom))->latin1_chars >= 0)) {
+    if (acmp && acmp->sz < ERTS_MAX_INTERNAL_ATOM_CACHE_ENTRIES) {
 	int ix;
 	ASSERT(acmp->hdr_sz < 0);
+        ASSERT(dflags & DFLAG_UTF8_ATOMS);
 	ix = atom2cix(atom);
 	if (acmp->cache[ix].iix < 0) {
 	    acmp->cache[ix].iix = acmp->sz;
@@ -258,9 +246,7 @@ get_iix_acache_map(ErtsAtomCacheMap *acmp, Eterm atom, Uint32 dflags)
 	ASSERT(is_atom(atom));
 	ix = atom2cix(atom);
 	if (acmp->cache[ix].iix < 0) {
-	    ASSERT(acmp->sz == ERTS_MAX_INTERNAL_ATOM_CACHE_ENTRIES
-		   || (!(dflags & DFLAG_UTF8_ATOMS)
-		       && atom_tab(atom_val(atom))->latin1_chars < 0));
+	    ASSERT(acmp->sz == ERTS_MAX_INTERNAL_ATOM_CACHE_ENTRIES);
 	    return -1;
 	}
 	else {
@@ -274,7 +260,6 @@ void
 erts_finalize_atom_cache_map(ErtsAtomCacheMap *acmp, Uint32 dflags)
 {
     if (acmp) {
-	int utf8_atoms = (int) (dflags & DFLAG_UTF8_ATOMS);
 	int long_atoms = 0; /* !0 if one or more atoms are longer than 255. */
 	int i;
 	int sz;
@@ -285,6 +270,7 @@ erts_finalize_atom_cache_map(ErtsAtomCacheMap *acmp, Uint32 dflags)
 	    + 1 /* number of internal cache entries */
 	    ;
 	int min_sz;
+        ASSERT(dflags & DFLAG_UTF8_ATOMS);
 	ASSERT(acmp->hdr_sz < 0);
 	/* Make sure cache update instructions fit */
 	min_sz = fix_sz+(2+4)*acmp->sz;
@@ -296,7 +282,7 @@ erts_finalize_atom_cache_map(ErtsAtomCacheMap *acmp, Uint32 dflags)
 	    atom = acmp->cache[acmp->cix[i]].atom;
 	    ASSERT(is_atom(atom));
 	    a = atom_tab(atom_val(atom));
-	    len = (int) (utf8_atoms ? a->len : a->latin1_chars);
+	    len = (int) a->len;
 	    ASSERT(len >= 0);
 	    if (!long_atoms && len > 255)
 		long_atoms = 1;
@@ -366,18 +352,77 @@ byte *erts_encode_ext_dist_header_setup(byte *ctl_ext, ErtsAtomCacheMap *acmp)
     }
 }
 
-byte *erts_encode_ext_dist_header_finalize(byte *ext, ErtsAtomCache *cache, Uint32 dflags)
+
+#define PASS_THROUGH 'p'
+
+Sint erts_encode_ext_dist_header_finalize(ErtsDistOutputBuf* ob,
+                                          DistEntry* dep,
+                                          Uint32 dflags,
+                                          Sint reds)
 {
     byte *ip;
     byte instr_buf[(2+4)*ERTS_ATOM_CACHE_SIZE];
     int ci, sz;
     byte dist_hdr_flags;
     int long_atoms;
-    int utf8_atoms = (int) (dflags & DFLAG_UTF8_ATOMS);
-    register byte *ep = ext;
-    ASSERT(ep[0] == VERSION_MAGIC);
-    if (ep[1] != DIST_HEADER)
-	return ext;
+    register byte *ep = ob->extp;
+    ASSERT(dflags & DFLAG_UTF8_ATOMS);
+
+    /*
+     * The buffer can have different layouts at this point depending on
+     * what was known when encoded:
+     *
+     * Pending connection: CtrlTerm [, MsgTerm]
+     * With atom cache   : VERSION_MAGIC, DIST_HEADER, ..., CtrlTerm [, MsgTerm]
+     * No atom cache     : VERSION_MAGIC, CtrlTerm [, VERSION_MAGIC, MsgTerm]
+     */
+
+    if (ep[0] != VERSION_MAGIC || dep->transcode_ctx) {
+        /*
+         * Was encoded without atom cache toward pending connection.
+         */
+        ASSERT(ep[0] == SMALL_TUPLE_EXT || ep[0] == LARGE_TUPLE_EXT);
+
+        if (~dflags & (DFLAG_DIST_MONITOR | DFLAG_DIST_MONITOR_NAME)
+            && ep[0] == SMALL_TUPLE_EXT
+            && ep[1] == 4
+            && ep[2] == SMALL_INTEGER_EXT
+            && (ep[3] == DOP_MONITOR_P ||
+                ep[3] == DOP_MONITOR_P_EXIT ||
+                ep[3] == DOP_DEMONITOR_P)) {
+            /*
+             * Receiver does not support process monitoring.
+             * Suppress monitor control msg (see erts_dsig_send_monitor)
+             * by converting it to an empty (tick) packet.
+             */
+            ob->ext_endp = ob->extp;
+            return reds;
+        }
+        if (~dflags & (DFLAG_BIT_BINARIES | DFLAG_EXPORT_PTR_TAG
+                       | DFLAG_DIST_HDR_ATOM_CACHE)) {
+            reds = transcode_dist_obuf(ob, dep, dflags, reds);
+            if (reds < 0)
+                return reds;
+            ep = ob->extp;
+        }
+        if (dflags & DFLAG_DIST_HDR_ATOM_CACHE) {
+            /*
+             * Encoding was done without atom caching but receiver expects
+             * a dist header, so we prepend an empty one.
+             */
+            *--ep = 0; /* NumberOfAtomCacheRefs */
+            *--ep = DIST_HEADER;
+            *--ep = VERSION_MAGIC;
+        }
+        goto done;
+    }
+    else if (ep[1] != DIST_HEADER) {
+        ASSERT(ep[1] == SMALL_TUPLE_EXT || ep[1] == LARGE_TUPLE_EXT);
+        ASSERT(!(dflags & DFLAG_DIST_HDR_ATOM_CACHE));
+        /* Node without atom cache, 'pass through' needed */
+        *--ep = PASS_THROUGH;
+        goto done;
+    }
 
     dist_hdr_flags = ep[2];
     long_atoms = ERTS_DIST_HDR_LONG_ATOMS_FLG & ((int) dist_hdr_flags);
@@ -405,6 +450,7 @@ byte *erts_encode_ext_dist_header_finalize(byte *ext, ErtsAtomCache *cache, Uint
 			 / sizeof(Uint32))+1];
 	register Uint32 flgs;
 	int iix, flgs_bytes, flgs_buf_ix, used_half_bytes;
+        ErtsAtomCache* cache = dep->cache;
 #ifdef DEBUG
 	int tot_used_half_bytes;
 #endif
@@ -447,17 +493,9 @@ byte *erts_encode_ext_dist_header_finalize(byte *ext, ErtsAtomCache *cache, Uint
 		Atom *a;
 		cache->out_arr[cix] = atom;
 		a = atom_tab(atom_val(atom));
-		if (utf8_atoms) {
-		    sz = a->len;
-		    ep -= sz;
-		    sys_memcpy((void *) ep, (void *) a->name, sz);
-		}
-		else {
-		    ASSERT(0 <= a->latin1_chars && a->latin1_chars <= MAX_ATOM_CHARACTERS);
-		    ep -= a->latin1_chars;
-		    sz = erts_utf8_to_latin1(ep, a->name, a->len);
-		    ASSERT(a->latin1_chars == sz);
-		}
+                sz = a->len;
+                ep -= sz;
+                sys_memcpy((void *) ep, (void *) a->name, sz);
 		if (long_atoms) {
 		    ep -= 2;
 		    put_int16(sz, ep);
@@ -504,12 +542,16 @@ byte *erts_encode_ext_dist_header_finalize(byte *ext, ErtsAtomCache *cache, Uint
 		break;
 	    }
 	}
+        reds -= 3; /*was ERTS_PORT_REDS_DIST_CMD_FINALIZE*/
     }
     --ep;
     put_int8(ci, ep);
     *--ep = DIST_HEADER;
     *--ep = VERSION_MAGIC;
-    return ep;
+done:
+    ob->extp = ep;
+    ASSERT(&ob->data[0] <= ob->extp && ob->extp < ob->ext_endp);
+    return reds < 0 ? 0 : reds;
 }
 
 int erts_encode_dist_ext_size(Eterm term, Uint32 flags, ErtsAtomCacheMap *acmp,
@@ -520,7 +562,7 @@ int erts_encode_dist_ext_size(Eterm term, Uint32 flags, ErtsAtomCacheMap *acmp,
 	return -1;
     } else {
 #ifndef ERTS_DEBUG_USE_DIST_SEP
-	if (!(flags & DFLAG_DIST_HDR_ATOM_CACHE))
+	if (!(flags & (DFLAG_DIST_HDR_ATOM_CACHE | DFLAG_NO_MAGIC)))
 #endif
 	    sz++ /* VERSION_MAGIC */;
 
@@ -536,7 +578,7 @@ int erts_encode_dist_ext_size_int(Eterm term, struct erts_dsig_send_context* ctx
 	return -1;
     } else {
 #ifndef ERTS_DEBUG_USE_DIST_SEP
-	if (!(ctx->flags & DFLAG_DIST_HDR_ATOM_CACHE))
+	if (!(ctx->flags & (DFLAG_DIST_HDR_ATOM_CACHE | DFLAG_NO_MAGIC)))
 #endif
 	    sz++ /* VERSION_MAGIC */;
 
@@ -568,7 +610,7 @@ int erts_encode_dist_ext(Eterm term, byte **ext, Uint32 flags, ErtsAtomCacheMap
 {
     if (!ctx || !ctx->wstack.wstart) {
     #ifndef ERTS_DEBUG_USE_DIST_SEP
-	if (!(flags & DFLAG_DIST_HDR_ATOM_CACHE))
+	if (!(flags & (DFLAG_DIST_HDR_ATOM_CACHE | DFLAG_NO_MAGIC)))
     #endif
 	    *(*ext)++ = VERSION_MAGIC;
     }
@@ -643,7 +685,7 @@ erts_prepare_dist_ext(ErtsDistExternal *edep,
 #endif
 
     register byte *ep = ext;
-    int utf8_atoms = (int) (dep->flags & DFLAG_UTF8_ATOMS);
+    ASSERT(dep->flags & DFLAG_UTF8_ATOMS);
 
     edep->heap_size = -1;
     edep->ext_endp = ext+size;
@@ -669,17 +711,16 @@ erts_prepare_dist_ext(ErtsDistExternal *edep,
 
     erts_de_rlock(dep);
 
-    if ((dep->status & (ERTS_DE_SFLG_EXITING|ERTS_DE_SFLG_CONNECTED))
-        != ERTS_DE_SFLG_CONNECTED) {
+    if (dep->status != ERTS_DE_SFLG_CONNECTED &&
+	dep->status != ERTS_DE_SFLG_PENDING) {
         erts_de_runlock(dep);
         return ERTS_PREP_DIST_EXT_CLOSED;
     }
-
     if (dep->flags & DFLAG_DIST_HDR_ATOM_CACHE)
         edep->flags |= ERTS_DIST_EXT_DFLAG_HDR;
 
     *connection_id = dep->connection_id;
-    edep->flags |= (dep->connection_id & ERTS_DIST_EXT_CON_ID_MASK);
+    edep->connection_id = dep->connection_id;
 
     if (ep[1] != DIST_HEADER) {
 	if (edep->flags & ERTS_DIST_EXT_DFLAG_HDR)
@@ -806,9 +847,7 @@ erts_prepare_dist_ext(ErtsDistExternal *edep,
 		    CHKSIZE(len);
 		    atom = erts_atom_put((byte *) ep,
 					 len,
-					 (utf8_atoms
-					  ? ERTS_ATOM_ENC_UTF8
-					  : ERTS_ATOM_ENC_LATIN1),
+                                         ERTS_ATOM_ENC_UTF8,
 					 0);
 		    if (is_non_value(atom))
 			ERTS_EXT_HDR_FAIL;
@@ -895,7 +934,7 @@ bad_dist_ext(ErtsDistExternal *edep)
 		erts_dsprintf(dsbufp, ", %d=%T", i, edep->attab.atom[i]);
 	}
 	erts_send_warning_to_logger_nogl(dsbufp);
-	erts_kill_dist_connection(dep, ERTS_DIST_EXT_CON_ID(edep));
+	erts_kill_dist_connection(dep, edep->connection_id);
     }
 }
 
@@ -1220,7 +1259,8 @@ typedef struct B2TContext_t {
     ErtsBinary2TermState b2ts;
     Uint32 flags;
     SWord reds;
-    Eterm trap_bin;
+    Uint used_bytes; /* In: boolean, Out: bytes */
+    Eterm trap_bin;  /* THE_NON_VALUE if not exported */
     Export *bif;
     Eterm arg[2];
     enum B2TState state;
@@ -1314,6 +1354,11 @@ binary2term_prepare(ErtsBinary2TermState *state, byte *data, Sint data_size,
 
 	    ctx->u.uc.dbytes = state->extp;
 	    ctx->u.uc.dleft = dest_len;
+            if (ctx->used_bytes) {
+                ASSERT(ctx->used_bytes == 1);
+                 /* to be subtracted by stream.avail_in when done */
+                ctx->used_bytes = data_size;
+            }
 	    ctx->state = B2TUncompressChunk;
             *ctxp = ctx;
         }
@@ -1416,13 +1461,15 @@ static int b2t_context_destructor(Binary *context_bin)
     return 1;
 }
 
+static BIF_RETTYPE binary_to_term_int(Process*, Eterm bin, B2TContext*);
+
+
 static BIF_RETTYPE binary_to_term_trap_1(BIF_ALIST_1)
 {
     Binary *context_bin = erts_magic_ref2bin(BIF_ARG_1);
     ASSERT(ERTS_MAGIC_BIN_DESTRUCTOR(context_bin) == b2t_context_destructor);
 
-    return binary_to_term_int(BIF_P, 0, THE_NON_VALUE, context_bin, NULL,
-			      THE_NON_VALUE, THE_NON_VALUE);
+    return binary_to_term_int(BIF_P, THE_NON_VALUE, ERTS_MAGIC_BIN_DATA(context_bin));
 }
 
 
@@ -1448,6 +1495,8 @@ static B2TContext* b2t_export_context(Process* p, B2TContext* src)
                                                  b2t_context_destructor);
     B2TContext* ctx = ERTS_MAGIC_BIN_DATA(context_b);
     Eterm* hp;
+
+    ASSERT(is_non_value(src->trap_bin));
     sys_memcpy(ctx, src, sizeof(B2TContext));
     if (ctx->state >= B2TDecode && ctx->u.dc.next == &src->u.dc.res) {
         ctx->u.dc.next = &ctx->u.dc.res;
@@ -1457,8 +1506,7 @@ static B2TContext* b2t_export_context(Process* p, B2TContext* src)
     return ctx;
 }
 
-static BIF_RETTYPE binary_to_term_int(Process* p, Uint32 flags, Eterm bin, Binary* context_b,
-				      Export *bif_init, Eterm arg0, Eterm arg1)
+static BIF_RETTYPE binary_to_term_int(Process* p, Eterm bin, B2TContext *ctx)
 {
     BIF_RETTYPE ret_val;
 #ifdef EXTREME_B2T_TRAPPING
@@ -1466,25 +1514,17 @@ static BIF_RETTYPE binary_to_term_int(Process* p, Uint32 flags, Eterm bin, Binar
 #else
     SWord initial_reds = (Uint)(ERTS_BIF_REDS_LEFT(p) * B2T_BYTES_PER_REDUCTION);
 #endif
-    B2TContext c_buff;
-    B2TContext *ctx;
     int is_first_call;
 
-    if (context_b == NULL) {
+    if (is_value(bin)) {
 	/* Setup enough to get started */
         is_first_call = 1;
-        ctx = &c_buff;
 	ctx->state = B2TPrepare;
         ctx->aligned_alloc = NULL;
-        ctx->flags = flags;
-	ctx->bif = bif_init;
-	ctx->arg[0] = arg0;
-	ctx->arg[1] = arg1;
-        IF_DEBUG(ctx->trap_bin = THE_NON_VALUE;)
     } else {
-        is_first_call = 0;
-	ctx = ERTS_MAGIC_BIN_DATA(context_b);
+        ASSERT(is_value(ctx->trap_bin));
         ASSERT(ctx->state != B2TPrepare);
+        is_first_call = 0;
     }
     ctx->reds = initial_reds;
 
@@ -1528,6 +1568,10 @@ static BIF_RETTYPE binary_to_term_int(Process* p, Uint32 flags, Eterm bin, Binar
                      && zret == Z_STREAM_END
                      && ctx->u.uc.dleft == 0) {
                 ctx->reds -= chunk;
+                if (ctx->used_bytes) {
+                    ASSERT(ctx->used_bytes > 5 + ctx->u.uc.stream.avail_in);
+                    ctx->used_bytes -= ctx->u.uc.stream.avail_in;
+                }
                 ctx->state = B2TSizeInit;
             }
             else {
@@ -1546,11 +1590,11 @@ static BIF_RETTYPE binary_to_term_int(Process* p, Uint32 flags, Eterm bin, Binar
             break;
 
         case B2TDecodeInit:
-            if (ctx == &c_buff && ctx->b2ts.extsize > ctx->reds) {
+            if (is_non_value(ctx->trap_bin) && ctx->b2ts.extsize > ctx->reds) {
                 /* dec_term will maybe trap, allocate space for magic bin
                    before result term to make it easy to trim with HRelease.
                  */
-                ctx = b2t_export_context(p, &c_buff);
+                ctx = b2t_export_context(p, ctx);
             }
             ctx->u.dc.ep = ctx->b2ts.extp;
             ctx->u.dc.res = (Eterm) (UWord) NULL;
@@ -1593,6 +1637,25 @@ static BIF_RETTYPE binary_to_term_int(Process* p, Uint32 flags, Eterm bin, Binar
 	    return ret_val;
 
         case B2TDone:
+            if (ctx->used_bytes) {
+                Eterm *hp;
+                Eterm used;
+                if (!ctx->b2ts.exttmp) {
+                    ASSERT(ctx->used_bytes == 1);
+                    ctx->used_bytes = (ctx->u.dc.ep - ctx->b2ts.extp
+                                       +1); /* VERSION_MAGIC */
+                }
+                if (IS_USMALL(0, ctx->used_bytes)) {
+                    hp = erts_produce_heap(&ctx->u.dc.factory, 3, 0);
+                    used = make_small(ctx->used_bytes);
+                }
+                else {
+                    hp = erts_produce_heap(&ctx->u.dc.factory, 3+BIG_UINT_HEAP_SIZE, 0);
+                    used = uint_to_big(ctx->used_bytes, hp);
+                    hp += BIG_UINT_HEAP_SIZE;
+                }
+                ctx->u.dc.res = TUPLE2(hp, ctx->u.dc.res, used);
+            }
             b2t_destroy_context(ctx);
 
             if (ctx->u.dc.factory.hp > ctx->u.dc.factory.hp_end) {
@@ -1613,11 +1676,10 @@ static BIF_RETTYPE binary_to_term_int(Process* p, Uint32 flags, Eterm bin, Binar
         }
     }while (ctx->reds > 0 || ctx->state >= B2TDone);
 
-    if (ctx == &c_buff) {
-        ASSERT(ctx->trap_bin == THE_NON_VALUE);
-        ctx = b2t_export_context(p, &c_buff);
+    if (is_non_value(ctx->trap_bin)) {
+        ctx = b2t_export_context(p, ctx);
+        ASSERT(is_value(ctx->trap_bin));
     }
-    ASSERT(ctx->trap_bin != THE_NON_VALUE);
 
     if (is_first_call) {
         erts_set_gc_state(p, 0);
@@ -1634,23 +1696,35 @@ HIPE_WRAPPER_BIF_DISABLE_GC(binary_to_term, 1)
 
 BIF_RETTYPE binary_to_term_1(BIF_ALIST_1)
 {
-    return binary_to_term_int(BIF_P, 0, BIF_ARG_1, NULL, bif_export[BIF_binary_to_term_1],
-			      BIF_ARG_1, THE_NON_VALUE);
+    B2TContext ctx;
+
+    ctx.flags = 0;
+    ctx.used_bytes = 0;
+    ctx.trap_bin = THE_NON_VALUE;
+    ctx.bif = bif_export[BIF_binary_to_term_1];
+    ctx.arg[0] = BIF_ARG_1;
+    ctx.arg[1] = THE_NON_VALUE;
+    return binary_to_term_int(BIF_P, BIF_ARG_1, &ctx);
 }
 
 HIPE_WRAPPER_BIF_DISABLE_GC(binary_to_term, 2)
 
 BIF_RETTYPE binary_to_term_2(BIF_ALIST_2)
 {
+    B2TContext ctx;
     Eterm opts;
     Eterm opt;
-    Uint32 flags = 0;
 
+    ctx.flags = 0;
+    ctx.used_bytes = 0;
     opts = BIF_ARG_2;
     while (is_list(opts)) {
         opt = CAR(list_val(opts));
         if (opt == am_safe) {
-            flags |= ERTS_DIST_EXT_BTT_SAFE;
+            ctx.flags |= ERTS_DIST_EXT_BTT_SAFE;
+        }
+        else if (opt == am_used) {
+            ctx.used_bytes = 1;
         }
 	else {
             goto error;
@@ -1661,8 +1735,11 @@ BIF_RETTYPE binary_to_term_2(BIF_ALIST_2)
     if (is_not_nil(opts))
         goto error;
 
-    return binary_to_term_int(BIF_P, flags, BIF_ARG_1, NULL, bif_export[BIF_binary_to_term_2],
-			      BIF_ARG_1, BIF_ARG_2);
+    ctx.trap_bin = THE_NON_VALUE;
+    ctx.bif = bif_export[BIF_binary_to_term_2];
+    ctx.arg[0] = BIF_ARG_1;
+    ctx.arg[1] = BIF_ARG_2;
+    return binary_to_term_int(BIF_P, BIF_ARG_1, &ctx);
 
 error:
     BIF_ERROR(BIF_P, BADARG);
@@ -2099,7 +2176,7 @@ enc_atom(ErtsAtomCacheMap *acmp, Eterm atom, byte *ep, Uint32 dflags)
 {
     int iix;
     int len;
-    int utf8_atoms = (int) (dflags & DFLAG_UTF8_ATOMS);
+    const int utf8_atoms = (int) (dflags & DFLAG_UTF8_ATOMS);
 
     ASSERT(is_atom(atom));
 
@@ -2494,8 +2571,6 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
 	    break;
 	}
 
-    L_jump_start:
-
 	if (ctx && --r <= 0) {
 	    *reds = 0;
 	    ctx->obj = obj;
@@ -2503,6 +2578,8 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
 	    WSTACK_SAVE(s, &ctx->wstack);
 	    return -1;
 	}
+
+    L_jump_start:
 	switch(tag_val_def(obj)) {
 	case NIL_DEF:
 	    *ep++ = NIL_EXT;
@@ -2867,62 +2944,27 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
 		ErlFunThing* funp = (ErlFunThing *) fun_val(obj);
 		int ei;
 
-		if ((dflags & DFLAG_NEW_FUN_TAGS) != 0) {
-		    *ep++ = NEW_FUN_EXT;
-		    WSTACK_PUSH2(s, ENC_PATCH_FUN_SIZE,
-				 (UWord) ep); /* Position for patching in size */
-		    ep += 4;
-		    *ep = funp->arity;
-		    ep += 1;
-		    sys_memcpy(ep, funp->fe->uniq, 16);
-		    ep += 16;
-		    put_int32(funp->fe->index, ep);
-		    ep += 4;
-		    put_int32(funp->num_free, ep);
-		    ep += 4;
-		    ep = enc_atom(acmp, funp->fe->module, ep, dflags);
-		    ep = enc_term(acmp, make_small(funp->fe->old_index), ep, dflags, off_heap);
-		    ep = enc_term(acmp, make_small(funp->fe->old_uniq), ep, dflags, off_heap);
-		    ep = enc_pid(acmp, funp->creator, ep, dflags);
-		} else {
-		    /*
-		     * Communicating with an obsolete erl_interface or
-		     * jinterface node. Convert the fun to a tuple to
-		     * avoid crasching.
-		     */
-		
-		    /* Tag, arity */
-		    *ep++ = SMALL_TUPLE_EXT;
-		    put_int8(5, ep);
-		    ep += 1;
-		
-		    /* 'fun' */
-		    ep = enc_atom(acmp, am_fun, ep, dflags);
-		
-		    /* Module name */
-		    ep = enc_atom(acmp, funp->fe->module, ep, dflags);
-		
-		    /* Index, Uniq */
-		    *ep++ = INTEGER_EXT;
-		    put_int32(funp->fe->old_index, ep);
-		    ep += 4;
-		    *ep++ = INTEGER_EXT;
-		    put_int32(funp->fe->old_uniq, ep);
-		    ep += 4;
-		
-		    /* Environment sub-tuple arity */
-		    ASSERT(funp->num_free < MAX_ARG);
-		    *ep++ = SMALL_TUPLE_EXT;
-		    put_int8(funp->num_free, ep);
-		    ep += 1;
-		}
-		for (ei = funp->num_free-1; ei > 0; ei--) {
+		ASSERT(dflags & DFLAG_NEW_FUN_TAGS);
+                *ep++ = NEW_FUN_EXT;
+                WSTACK_PUSH2(s, ENC_PATCH_FUN_SIZE,
+                             (UWord) ep); /* Position for patching in size */
+                ep += 4;
+                *ep = funp->arity;
+                ep += 1;
+                sys_memcpy(ep, funp->fe->uniq, 16);
+                ep += 16;
+                put_int32(funp->fe->index, ep);
+                ep += 4;
+                put_int32(funp->num_free, ep);
+                ep += 4;
+                ep = enc_atom(acmp, funp->fe->module, ep, dflags);
+                ep = enc_term(acmp, make_small(funp->fe->old_index), ep, dflags, off_heap);
+                ep = enc_term(acmp, make_small(funp->fe->old_uniq), ep, dflags, off_heap);
+                ep = enc_pid(acmp, funp->creator, ep, dflags);
+
+		for (ei = funp->num_free-1; ei >= 0; ei--) {
 		    WSTACK_PUSH2(s, ENC_TERM, (UWord) funp->env[ei]);
 		}
-		if (funp->num_free != 0) {
-		    obj = funp->env[0];
-		    goto L_jump_start;
-		}
 	    }
 	    break;
 	}
@@ -3260,6 +3302,7 @@ dec_term_atom_common:
             n--;
 	    if (ctx) {
                 if (reds < n) {
+                    ASSERT(reds > 0);
 		    ctx->state = B2TDecodeList;
 		    ctx->u.dc.remaining_n = n - reds;
 		    n = reds;
@@ -4000,6 +4043,7 @@ dec_term_atom_common:
     if (ctx) {
         ctx->state = B2TDone;
 	ctx->reds = reds;
+        ctx->u.dc.ep = ep;
     }
 
     return ep;
@@ -4269,24 +4313,12 @@ encode_size_struct_int(TTBSizeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj,
 	    {
 		ErlFunThing* funp = (ErlFunThing *) fun_val(obj);
 		
-		if ((dflags & DFLAG_NEW_FUN_TAGS) != 0) {
-		    result += 20+1+1+4;	/* New ID + Tag */
-		    result += 4; /* Length field (number of free variables */
-		    result += encode_size_struct2(acmp, funp->creator, dflags);
-		    result += encode_size_struct2(acmp, funp->fe->module, dflags);
-		    result += 2 * (1+4);	/* Index, Uniq */
-		} else {
-		    /*
-		     * Size when fun is mapped to a tuple.
-		     */
-		    result += 1 + 1; /* Tuple tag, arity */
-		    result += 1 + 1 + 2 +
-			atom_tab(atom_val(am_fun))->len; /* 'fun' */
-		    result += 1 + 1 + 2 +
-			atom_tab(atom_val(funp->fe->module))->len; /* Module name */
-		    result += 2 * (1 + 4); /* Index + Uniq */
-		    result += 1 + (funp->num_free < 0x100 ? 1 : 4);
-		}
+                ASSERT(dflags & DFLAG_NEW_FUN_TAGS);
+                result += 20+1+1+4;	/* New ID + Tag */
+                result += 4; /* Length field (number of free variables */
+                result += encode_size_struct2(acmp, funp->creator, dflags);
+                result += encode_size_struct2(acmp, funp->fe->module, dflags);
+                result += 2 * (1+4);	/* Index, Uniq */
 		if (funp->num_free > 1) {
 		    WSTACK_PUSH2(s, (UWord) (funp->env + 1),
 				    (UWord) TERM_ARRAY_OP(funp->num_free-1));
@@ -4374,7 +4406,7 @@ decoded_size(byte *ep, byte* endp, int internal_tags, B2TContext* ctx)
         }
     }
     else
-        reds = 0; /* not used but compiler warns anyway */
+        ERTS_UNDEF(reds, 0);
 
     heap_size = 0;
     terms = 1;
@@ -4684,3 +4716,177 @@ error:
 #undef SKIP2
 #undef CHKSIZE
 }
+
+
+struct transcode_context {
+    enum {
+        TRANSCODE_DEC_MSG_SIZE,
+        TRANSCODE_DEC_MSG,
+        TRANSCODE_ENC_CTL,
+        TRANSCODE_ENC_MSG
+    }state;
+    Eterm ctl_term;
+    Eterm* ctl_heap;
+    ErtsHeapFactory ctl_factory;
+    Eterm* msg_heap;
+    B2TContext b2t;
+    TTBEncodeContext ttb;
+#ifdef DEBUG
+    ErtsDistOutputBuf* dbg_ob;
+#endif
+};
+
+void transcode_free_ctx(DistEntry* dep)
+{
+    struct transcode_context* ctx = dep->transcode_ctx;
+
+    erts_factory_close(&ctx->ctl_factory);
+    erts_free(ERTS_ALC_T_DIST_TRANSCODE, ctx->ctl_heap);
+
+    if (ctx->msg_heap) {
+        erts_factory_close(&ctx->b2t.u.dc.factory);
+        erts_free(ERTS_ALC_T_DIST_TRANSCODE, ctx->msg_heap);
+    }
+    erts_free(ERTS_ALC_T_DIST_TRANSCODE, ctx);
+    dep->transcode_ctx = NULL;
+}
+
+Sint transcode_dist_obuf(ErtsDistOutputBuf* ob,
+                         DistEntry* dep,
+                         Uint32 dflags,
+                         Sint reds)
+{
+    Sint hsz;
+    byte* decp;
+    const int have_msg = !!ob->msg_start;
+    int i;
+    struct transcode_context* ctx = dep->transcode_ctx;
+
+    if (!ctx) { /* first call for 'ob' */
+
+        if (~dflags & (DFLAG_BIT_BINARIES | DFLAG_EXPORT_PTR_TAG)) {
+            /*
+             * Receiver does not support bitstrings and/or export funs.
+             * We need to transcode control and message terms to use tuple fallbacks.
+             */
+            ctx = erts_alloc(ERTS_ALC_T_DIST_TRANSCODE, sizeof(struct transcode_context));
+            dep->transcode_ctx = ctx;
+        #ifdef DEBUG
+            ctx->dbg_ob = ob;
+        #endif
+
+            hsz = decoded_size(ob->extp, ob->ext_endp, 0, NULL);
+            ctx->ctl_heap = erts_alloc(ERTS_ALC_T_DIST_TRANSCODE, hsz*sizeof(Eterm));
+            erts_factory_tmp_init(&ctx->ctl_factory, ctx->ctl_heap, hsz, ERTS_ALC_T_DIST_TRANSCODE);
+            ctx->msg_heap = NULL;
+
+            decp = dec_term(NULL, &ctx->ctl_factory, ob->extp, &ctx->ctl_term, NULL);
+            if (have_msg) {
+                ASSERT(decp == ob->msg_start); (void)decp;
+                ctx->b2t.u.sc.ep = NULL;
+                ctx->b2t.state = B2TSize;
+                ctx->b2t.aligned_alloc = NULL;
+                ctx->b2t.b2ts.exttmp = 0;
+                ctx->state = TRANSCODE_DEC_MSG_SIZE;
+            }
+            else {
+                ASSERT(decp == ob->ext_endp);
+                ctx->state = TRANSCODE_ENC_CTL;
+            }
+        }
+        else {
+            /*
+             * No need for full transcoding, but primitive receiver (erl_/jinterface)
+             * expects VERSION_MAGIC before both control and message terms.
+             */
+            if (ob->msg_start) {
+                Sint ctl_bytes = ob->msg_start - ob->extp;
+                ASSERT(ob->extp < ob->msg_start && ob->msg_start < ob->ext_endp);
+                /* Move control term back 1 byte to make room */
+                sys_memmove(ob->extp-1, ob->extp, ctl_bytes);
+                *--(ob->msg_start) = VERSION_MAGIC;
+                --(ob->extp);
+                reds -= ctl_bytes / (B2T_BYTES_PER_REDUCTION * B2T_MEMCPY_FACTOR);
+            }
+            *--(ob->extp) = VERSION_MAGIC;
+            goto done;
+        }
+    }
+    else {
+        ASSERT(ctx->dbg_ob == ob);
+    }
+    ctx->b2t.reds = reds * B2T_BYTES_PER_REDUCTION;
+
+    switch (ctx->state) {
+    case TRANSCODE_DEC_MSG_SIZE:
+        hsz = decoded_size(ob->msg_start, ob->ext_endp, 0, &ctx->b2t);
+        if (ctx->b2t.state == B2TSize) {
+            return -1;
+        }
+        ASSERT(ctx->b2t.state == B2TDecodeInit);
+        ctx->msg_heap = erts_alloc(ERTS_ALC_T_DIST_TRANSCODE, hsz*sizeof(Eterm));
+        ctx->b2t.u.dc.ep = ob->msg_start;
+        ctx->b2t.u.dc.res = (Eterm) NULL;
+        ctx->b2t.u.dc.next = &ctx->b2t.u.dc.res;
+        erts_factory_tmp_init(&ctx->b2t.u.dc.factory,
+                              ctx->msg_heap, hsz, ERTS_ALC_T_DIST_TRANSCODE);
+        ctx->b2t.u.dc.flat_maps.wstart = NULL;
+        ctx->b2t.u.dc.hamt_array.pstart = NULL;
+        ctx->b2t.state = B2TDecode;
+
+        ctx->state = TRANSCODE_DEC_MSG;
+    case TRANSCODE_DEC_MSG:
+        if (ctx->b2t.reds <= 0)
+            ctx->b2t.reds = 1;
+        decp = dec_term(NULL, NULL, NULL, NULL, &ctx->b2t);
+        if (ctx->b2t.state < B2TDone) {
+            return -1;
+        }
+        ASSERT(ctx->b2t.state == B2TDone);
+        ASSERT(decp && decp <= ob->ext_endp);
+        reds = ctx->b2t.reds / B2T_BYTES_PER_REDUCTION;
+        b2t_destroy_context(&ctx->b2t);
+
+        ctx->state = TRANSCODE_ENC_CTL;
+    case TRANSCODE_ENC_CTL:
+        if (!(dflags & DFLAG_DIST_HDR_ATOM_CACHE)) {
+            ASSERT(!(dflags & DFLAG_NO_MAGIC));
+            ob->extp -= 2; /* VERSION_MAGIC x 2 */
+        }
+        ob->ext_endp = ob->extp;
+        i = erts_encode_dist_ext(ctx->ctl_term, &ob->ext_endp, dflags,
+                                 NULL, NULL, NULL);
+        ASSERT(i == 0); (void)i;
+        ASSERT(ob->ext_endp <= ob->alloc_endp);
+
+        if (!have_msg) {
+            break;
+        }
+        ob->msg_start = ob->ext_endp;
+        ctx->ttb.wstack.wstart = NULL;
+        ctx->ttb.flags = dflags;
+        ctx->ttb.level = 0;
+
+        ctx->state = TRANSCODE_ENC_MSG;
+    case TRANSCODE_ENC_MSG:
+        reds *= TERM_TO_BINARY_LOOP_FACTOR;
+        if (erts_encode_dist_ext(ctx->b2t.u.dc.res, &ob->ext_endp, dflags, NULL,
+                                 &ctx->ttb, &reds)) {
+            return -1;
+        }
+        reds /= TERM_TO_BINARY_LOOP_FACTOR;
+
+        ASSERT(ob->ext_endp <= ob->alloc_endp);
+
+    }
+    transcode_free_ctx(dep);
+
+done:
+    if (!(dflags & DFLAG_DIST_HDR_ATOM_CACHE))
+        *--(ob->extp) = PASS_THROUGH;
+
+    if (reds < 0)
+        reds = 0;
+
+    return reds;
+}
diff --git a/erts/emulator/beam/external.h b/erts/emulator/beam/external.h
index 3c61d013da..f9f8abcc27 100644
--- a/erts/emulator/beam/external.h
+++ b/erts/emulator/beam/external.h
@@ -109,35 +109,26 @@ typedef struct {
 } ErtsAtomTranslationTable;
 
 /*
- * These flags are tagged onto the high bits of a connection ID and stored in
- * the ErtsDistExternal structure's flags field.  They are used to indicate
- * various bits of state necessary to decode binaries in a variety of
- * scenarios. The mask ERTS_DIST_EXT_CON_ID_MASK is used later to separate the
- * connection ID from the flags. Be careful to ensure that the mask does not
- * overlap any of the bits used for flags, or ERTS will leak flags bits into
- * connection IDs and leak connection ID bits into the flags.
+ * These flags are stored in the ErtsDistExternal structure's flags field.
+ * They are used to indicate various bits of state necessary to decode binaries
+ * in a variety of scenarios.
  */
-#define ERTS_DIST_EXT_DFLAG_HDR      ((Uint32) 0x80000000)
-#define ERTS_DIST_EXT_ATOM_TRANS_TAB ((Uint32) 0x40000000)
-#define ERTS_DIST_EXT_BTT_SAFE       ((Uint32) 0x20000000)
-#define ERTS_DIST_EXT_CON_ID_MASK    ((Uint32) 0x1fffffff)
+#define ERTS_DIST_EXT_DFLAG_HDR      ((Uint32) 0x1)
+#define ERTS_DIST_EXT_ATOM_TRANS_TAB ((Uint32) 0x2)
+#define ERTS_DIST_EXT_BTT_SAFE       ((Uint32) 0x4)
+
+#define ERTS_DIST_CON_ID_MASK ((Uint32) 0x00ffffff) /* also in net_kernel.erl */
 
-#define ERTS_DIST_EXT_CON_ID(DIST_EXTP) \
-  ((DIST_EXTP)->flags & ERTS_DIST_EXT_CON_ID_MASK)
 typedef struct {
     DistEntry *dep;
     byte *extp;
     byte *ext_endp;
     Sint heap_size;
+    Uint32 connection_id;
     Uint32 flags;
     ErtsAtomTranslationTable attab;
 } ErtsDistExternal;
 
-typedef struct {
-    int have_header;
-    int cache_entries;
-} ErtsDistHeaderPeek;
-
 #define ERTS_DIST_EXT_SIZE(EDEP) \
   (sizeof(ErtsDistExternal) \
    - (((EDEP)->flags & ERTS_DIST_EXT_ATOM_TRANS_TAB) \
@@ -163,7 +154,7 @@ void erts_finalize_atom_cache_map(ErtsAtomCacheMap *, Uint32);
 
 Uint erts_encode_ext_dist_header_size(ErtsAtomCacheMap *);
 byte *erts_encode_ext_dist_header_setup(byte *, ErtsAtomCacheMap *);
-byte *erts_encode_ext_dist_header_finalize(byte *, ErtsAtomCache *, Uint32);
+Sint erts_encode_ext_dist_header_finalize(ErtsDistOutputBuf*, DistEntry *, Uint32 dflags, Sint reds);
 struct erts_dsig_send_context;
 int erts_encode_dist_ext_size(Eterm, Uint32, ErtsAtomCacheMap*, Uint* szp);
 int erts_encode_dist_ext_size_int(Eterm term, struct erts_dsig_send_context* ctx, Uint* szp);
@@ -177,9 +168,6 @@ Uint erts_encode_ext_size_ets(Eterm);
 void erts_encode_ext(Eterm, byte **);
 byte* erts_encode_ext_ets(Eterm, byte *, struct erl_off_heap_header** ext_off_heap);
 
-#ifdef ERTS_WANT_EXTERNAL_TAGS
-ERTS_GLB_INLINE void erts_peek_dist_header(ErtsDistHeaderPeek *, byte *, Uint);
-#endif
 ERTS_GLB_INLINE void erts_free_dist_ext_copy(ErtsDistExternal *);
 ERTS_GLB_INLINE void *erts_dist_ext_trailer(ErtsDistExternal *);
 ErtsDistExternal *erts_make_dist_ext_copy(ErtsDistExternal *, Uint);
@@ -207,23 +195,9 @@ void erts_binary2term_abort(ErtsBinary2TermState *);
 Eterm erts_binary2term_create(ErtsBinary2TermState *, ErtsHeapFactory*);
 int erts_debug_max_atom_out_cache_index(void);
 int erts_debug_atom_to_out_cache_index(Eterm);
-
+void transcode_free_ctx(DistEntry* dep);
 
 #if ERTS_GLB_INLINE_INCL_FUNC_DEF
-#ifdef ERTS_WANT_EXTERNAL_TAGS
-ERTS_GLB_INLINE void
-erts_peek_dist_header(ErtsDistHeaderPeek *dhpp, byte *ext, Uint sz)
-{
-    if (ext[0] == VERSION_MAGIC
-	|| ext[1] != DIST_HEADER
-	|| sz < (1+1+1))
-	dhpp->have_header = 0;
-    else {
-	dhpp->have_header = 1;
-	dhpp->cache_entries = (int) get_int8(&ext[2]);
-    }
-}
-#endif
 
 ERTS_GLB_INLINE void
 erts_free_dist_ext_copy(ErtsDistExternal *edep)
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index 604172857a..09207364eb 100644
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -947,6 +947,8 @@ void erts_update_ranges(BeamInstr* code, Uint size);
 void erts_remove_from_ranges(BeamInstr* code);
 UWord erts_ranges_sz(void);
 void erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info);
+ErtsLiteralArea** erts_dump_lit_areas;
+Uint erts_dump_num_lit_areas;
 
 /* break.c */
 void init_break_handler(void);
@@ -956,6 +958,7 @@ void process_info(fmtfn_t, void *);
 void print_process_info(fmtfn_t, void *, Process*);
 void info(fmtfn_t, void *);
 void loaded(fmtfn_t, void *);
+void erts_print_base64(fmtfn_t to, void *to_arg, byte* src, Uint size);
 
 /* sighandler sys.c */
 int erts_set_signal(Eterm signal, Eterm type);
@@ -1238,7 +1241,7 @@ void erts_init_unicode(void);
 Sint erts_unicode_set_loop_limit(Sint limit);
 
 void erts_native_filename_put(Eterm ioterm, int encoding, byte *p) ;
-Sint erts_native_filename_need(Eterm ioterm, int encoding, int allow_null);
+Sint erts_native_filename_need(Eterm ioterm, int encoding);
 void erts_copy_utf8_to_utf16_little(byte *target, byte *bytes, int num_chars);
 int erts_analyze_utf8(byte *source, Uint size, 
 			byte **err_pos, Uint *num_chars, int *left);
diff --git a/erts/emulator/beam/index.c b/erts/emulator/beam/index.c
index 93d1111904..be1771b037 100644
--- a/erts/emulator/beam/index.c
+++ b/erts/emulator/beam/index.c
@@ -58,7 +58,7 @@ IndexTable*
 erts_index_init(ErtsAlcType_t type, IndexTable* t, char* name,
 		int size, int limit, HashFunctions fun)
 {
-    Uint base_size = ((limit+INDEX_PAGE_SIZE-1)/INDEX_PAGE_SIZE)*sizeof(IndexSlot*);
+    Uint base_size = (((Uint)limit+INDEX_PAGE_SIZE-1)/INDEX_PAGE_SIZE)*sizeof(IndexSlot*);
     hash_init(type, &t->htable, name, 3*size/4, fun);
 
     t->size = 0;
diff --git a/erts/emulator/beam/instrs.tab b/erts/emulator/beam/instrs.tab
index 07cc4bd527..b92152238e 100644
--- a/erts/emulator/beam/instrs.tab
+++ b/erts/emulator/beam/instrs.tab
@@ -542,6 +542,13 @@ put_list(Hd, Tl, Dst) {
     HTOP += 2;
 }
 
+update_list(Hd, Dst) {
+    HTOP[0] = $Hd;
+    HTOP[1] = $Dst;
+    $Dst = make_list(HTOP);
+    HTOP += 2;
+}
+
 i_put_tuple := i_put_tuple.make.fill;
 
 i_put_tuple.make(Dst) {
@@ -788,7 +795,8 @@ is_eq_exact(Fail, X, Y) {
 }
 
 i_is_eq_exact_literal(Fail, Src, Literal) {
-    if (!eq($Src, $Literal)) {
+    Eterm src = $Src;
+    if (is_immed(src) || !eq(src, $Literal)) {
         $FAIL($Fail);
     }
 }
@@ -800,7 +808,8 @@ is_ne_exact(Fail, X, Y) {
 }
 
 i_is_ne_exact_literal(Fail, Src, Literal) {
-    if (eq($Src, $Literal)) {
+    Eterm src = $Src;
+    if (!is_immed(src) && eq(src, $Literal)) {
         $FAIL($Fail);
     }
 }
@@ -857,8 +866,7 @@ catch(Y, Fail) {
 }
 
 catch_end(Y) {
-    c_p->catches--;
-    make_blank($Y);
+    $try_end($Y);
     if (is_non_value(r(0))) {
         c_p->fvalue = NIL;
         if (x(1) == am_throw) {
@@ -888,12 +896,15 @@ catch_end(Y) {
 try_end(Y) {
     c_p->catches--;
     make_blank($Y);
-    if (is_non_value(r(0))) {
-        c_p->fvalue = NIL;
-        r(0) = x(1);
-        x(1) = x(2);
-        x(2) = x(3);
-    }
+}
+
+try_case(Y) {
+    $try_end($Y);
+    ASSERT(is_non_value(r(0)));
+    c_p->fvalue = NIL;
+    r(0) = x(1);
+    x(1) = x(2);
+    x(2) = x(3);
 }
 
 try_case_end(Src) {
@@ -920,3 +931,8 @@ i_raise() {
     //| -no_next
 }
 
+build_stacktrace() {
+    SWAPOUT;
+    x(0) = build_stacktrace(c_p, x(0));
+    SWAPIN;
+}
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 85013af3ad..9933c8dda4 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -3829,11 +3829,12 @@ static void sweep_one_link(ErtsLink *lnk, void *vpsc)
 	    ErtsDistLinkData dld;
 	    ErtsDSigData dsd;
 	    int code;
-	    code = erts_dsig_prepare(&dsd, dep, NULL, ERTS_DSP_NO_LOCK, 0);
+	    code = erts_dsig_prepare(&dsd, dep, NULL, 0, ERTS_DSP_NO_LOCK, 0, 0);
 	    switch (code) {
 	    case ERTS_DSIG_PREP_NOT_ALIVE:
 	    case ERTS_DSIG_PREP_NOT_CONNECTED:
 		break;
+	    case ERTS_DSIG_PREP_PENDING:
 	    case ERTS_DSIG_PREP_CONNECTED:
 		erts_remove_dist_link(&dld, port_id, lnk->pid, dep);
 		erts_destroy_dist_link(&dld);
diff --git a/erts/emulator/beam/macros.tab b/erts/emulator/beam/macros.tab
index 0d175a7ec6..494fe8961e 100644
--- a/erts/emulator/beam/macros.tab
+++ b/erts/emulator/beam/macros.tab
@@ -20,13 +20,12 @@
 //
 
 //
-// Use if there is a garbage collection before storing to a
-// general destination (either X or Y register).
+// Define a regular expression that will match instructions that
+// perform GC.  That will allow beam_makeops to check for instructions
+// that don't use $REFRESH_GEN_DEST() when they should.
 //
 
-REFRESH_GEN_DEST() {
-    dst_ptr = REG_TARGET_PTR(dst);
-}
+GC_REGEXP=erts_garbage_collect|erts_gc|GcBifFunction;
 
 // $Offset is relative to the start of the instruction (not to the
 // location of the failure label reference). Since combined
@@ -38,7 +37,7 @@ REFRESH_GEN_DEST() {
 // zero, except in a few bit syntax instructions.)
 
 SET_I_REL(Offset) {
-    ASSERT(VALID_INSTR(*(I + ($Offset))));
+    ASSERT(VALID_INSTR(*(I + ($Offset) + $IP_ADJUSTMENT)));
     I += $Offset + $IP_ADJUSTMENT;
 }
 
diff --git a/erts/emulator/beam/map_instrs.tab b/erts/emulator/beam/map_instrs.tab
index bbb2f49b66..c594a87298 100644
--- a/erts/emulator/beam/map_instrs.tab
+++ b/erts/emulator/beam/map_instrs.tab
@@ -31,7 +31,7 @@ new_map(Dst, Live, N) {
     Eterm res;
 
     HEAVY_SWAPOUT;
-    res = new_map(c_p, reg, $Live, $N, $NEXT_INSTRUCTION);
+    res = erts_gc_new_map(c_p, reg, $Live, $N, $NEXT_INSTRUCTION);
     HEAVY_SWAPIN;
     $REFRESH_GEN_DEST();
     $Dst = res;
@@ -44,7 +44,7 @@ i_new_small_map_lit(Dst, Live, Keys) {
     Eterm keys = $Keys;
 
     HEAVY_SWAPOUT;
-    res = new_small_map_lit(c_p, reg, keys, $Live, $NEXT_INSTRUCTION);
+    res = erts_gc_new_small_map_lit(c_p, reg, keys, $Live, $NEXT_INSTRUCTION);
     HEAVY_SWAPIN;
     $REFRESH_GEN_DEST();
     $Dst = res;
@@ -133,7 +133,7 @@ update_map_assoc(Src, Dst, Live, N) {
 
     reg[live] = $Src;
     HEAVY_SWAPOUT;
-    res = update_map_assoc(c_p, reg, live, $N, $NEXT_INSTRUCTION);
+    res = erts_gc_update_map_assoc(c_p, reg, live, $N, $NEXT_INSTRUCTION);
     HEAVY_SWAPIN;
     ASSERT(is_value(res));
     $REFRESH_GEN_DEST();
@@ -147,7 +147,7 @@ update_map_exact(Fail, Src, Dst, Live, N) {
 
     reg[live] = $Src;
     HEAVY_SWAPOUT;
-    res = update_map_exact(c_p, reg, live, $N, $NEXT_INSTRUCTION);
+    res = erts_gc_update_map_exact(c_p, reg, live, $N, $NEXT_INSTRUCTION);
     HEAVY_SWAPIN;
     if (is_value(res)) {
         $REFRESH_GEN_DEST();
diff --git a/erts/emulator/beam/module.c b/erts/emulator/beam/module.c
index baeec115ea..1712dc803c 100644
--- a/erts/emulator/beam/module.c
+++ b/erts/emulator/beam/module.c
@@ -254,4 +254,3 @@ void module_end_staging(int commit)
 
     IF_DEBUG(dbg_load_code_ix = -1);
 }
-
diff --git a/erts/emulator/beam/module.h b/erts/emulator/beam/module.h
index 9a81e6035b..a3f1ce1705 100644
--- a/erts/emulator/beam/module.h
+++ b/erts/emulator/beam/module.h
@@ -45,7 +45,7 @@ typedef struct erl_module {
     int seen;			/* Used by finish_loading() */
 
     struct erl_module_instance curr;
-    struct erl_module_instance old; /* protected by "old_code" rwlock */
+    struct erl_module_instance old; /* active protected by "old_code" rwlock */
     struct erl_module_instance* on_load;
 } Module; 
 
diff --git a/erts/emulator/beam/msg_instrs.tab b/erts/emulator/beam/msg_instrs.tab
index 8055a8616f..d6d4d2fb49 100644
--- a/erts/emulator/beam/msg_instrs.tab
+++ b/erts/emulator/beam/msg_instrs.tab
@@ -43,27 +43,23 @@
 //  *
 //  */
 
-recv_mark(Dest) {
+i_recv_mark() {
     /*
-     * Save the current position in message buffer and the
-     * the label for the loop_rec/2 instruction for the
-     * the receive statement.
+     * Save the current position in message buffer.
      */
-    $SET_REL_I(c_p->msg.mark, $Dest);
     c_p->msg.saved_last = c_p->msg.last;
 }
 
 i_recv_set() {
     /*
-     * If the mark is valid (points to the loop_rec/2
-     * instruction that follows), we know that the saved
-     * position points to the first message that could
-     * possibly be matched out.
+     * If c_p->msg.saved_last is non-zero, it points to the first
+     * message that could possibly be matched out.
      *
-     * If the mark is invalid, we do nothing, meaning that
-     * we will look through all messages in the message queue.
+     * If c_p->msg.saved_last is zero, it means that it was invalidated
+     * because another receive was executed before this i_recv_set()
+     * instruction was reached.
      */
-    if (c_p->msg.mark == (BeamInstr *) ($NEXT_INSTRUCTION)) {
+    if (c_p->msg.saved_last) {
         c_p->msg.save = c_p->msg.saved_last;
     }
     SET_I($NEXT_INSTRUCTION);
@@ -131,6 +127,7 @@ i_loop_rec(Dest) {
             ASSERT(HTOP == c_p->htop && E == c_p->stop);
             /* TODO: Add DTrace probe for this bad message situation? */
             UNLINK_MESSAGE(c_p, msgp);
+            c_p->msg.saved_last = 0; /* Better safe than sorry. */
             msgp->next = NULL;
             erts_cleanup_messages(msgp);
             goto loop_rec__;
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab
index 75ff40606b..fd1b3b9c74 100644
--- a/erts/emulator/beam/ops.tab
+++ b/erts/emulator/beam/ops.tab
@@ -99,21 +99,21 @@ line Loc | func_info M F A => func_info M F A | line Loc
 
 line I
 
-allocate t t
-allocate_heap t I t
+allocate t t?
+allocate_heap t I t?
 
 %cold
 deallocate Q
 %hot
 
 init y
-allocate_zero t t
-allocate_heap_zero t I t
+allocate_zero t t?
+allocate_heap_zero t I t?
 
 trim N Remaining => i_trim N
 i_trim t
 
-test_heap I t
+test_heap I t?
 
 allocate_heap S u==0 R => allocate S R
 allocate_heap_zero S u==0 R => allocate_zero S R
@@ -158,19 +158,19 @@ is_tuple Fail=f S | select_tuple_arity S=d Fail=f Size=u Rest=* => \
 select_tuple_arity S=d Fail=f Size=u Rest=* => \
   gen_select_tuple_arity(S, Fail, Size, Rest)
 
-i_select_val_bins xy f I
+i_select_val_bins xy f? I
 
-i_select_val_lins xy f I
+i_select_val_lins xy f? I
 
-i_select_val2 xy f c c
+i_select_val2 xy f? c c
 
-i_select_tuple_arity xy f I
+i_select_tuple_arity xy f? I
 
-i_select_tuple_arity2 xy f A A
+i_select_tuple_arity2 xy f? A A
 
-i_jump_on_val_zero xy f I
+i_jump_on_val_zero xy f? I
 
-i_jump_on_val xy f I W
+i_jump_on_val xy f? I W
 
 get_list xy xy xy
 
@@ -188,7 +188,8 @@ catch_end y
 
 # Try/catch.
 try Y F => catch Y F
-try_case Y => try_end Y
+
+try_case y
 try_end y
 
 %cold
@@ -213,9 +214,9 @@ i_get_tuple_element2y x P y y
 i_get_tuple_element3 x P x
 
 %cold
-is_number f x
-is_number f y
+is_number f? xy
 %hot
+
 is_number Fail=f i =>
 is_number Fail=f na => jump Fail
 is_number Fail Literal=q => move Literal x | is_number Fail x
@@ -446,37 +447,37 @@ is_ne_exact Lbl C=c R=xy => is_ne_exact Lbl R C
 is_ne_exact Lbl R=xy C=ian => i_is_ne_exact_immed Lbl R C
 is_ne_exact Lbl R=xy C=q => i_is_ne_exact_literal Lbl R C
 
-i_is_eq_exact_immed f rxy c
+i_is_eq_exact_immed f? rxy c
 
-i_is_eq_exact_literal f xy c
+i_is_eq_exact_literal f? xy c
 
-i_is_ne_exact_immed f xy c
+i_is_ne_exact_immed f? xy c
 
-i_is_ne_exact_literal f xy c
+i_is_ne_exact_literal f? xy c
 
 is_eq_exact Lbl Y=y X=x => is_eq_exact Lbl X Y
-is_eq_exact f x xy
-is_eq_exact f y y
+is_eq_exact f? x xy
+is_eq_exact f? y y
 
-is_ne_exact f S S
+is_ne_exact f? S S
 
-is_lt f x x
-is_lt f x c
-is_lt f c x
+is_lt f? x x
+is_lt f? x c
+is_lt f? c x
 %cold
-is_lt f s s
+is_lt f? s s
 %hot
 
-is_ge f x x
-is_ge f x c
-is_ge f c x
+is_ge f? x x
+is_ge f? x c
+is_ge f? c x
 %cold
-is_ge f s s
+is_ge f? s s
 %hot
 
-is_eq f s s
+is_eq f? s s
 
-is_ne f s s
+is_ne f? s s
 
 #
 # Putting things.
@@ -502,6 +503,10 @@ i_put_tuple xy I
 #
 put_list Const=c n Dst => move Const x | put_list x n Dst
 
+put_list Src Dst=x Dst => update_list Src Dst
+
+update_list xyc x
+
 put_list x n x
 put_list y n x
 put_list x x x
@@ -510,8 +515,6 @@ put_list y x x
 put_list y y x
 put_list x y x
 
-put_list y x x
-
 # put_list SrcReg Constant Dst
 
 put_list x c x
@@ -526,8 +529,6 @@ put_list c y x
 
 # The following put_list instructions using x(0) are frequently used.
 
-put_list y r r
-put_list x r r
 put_list r n r
 put_list r n x
 put_list r x x
@@ -538,6 +539,7 @@ put_list x x r
 put_list s s d
 %hot
 
+
 #
 # Some more only used by the emulator
 #
@@ -583,7 +585,7 @@ is_tagged_tuple Fail Literal=q Arity Atom => \
     move Literal x | is_tagged_tuple Fail x Arity Atom
 is_tagged_tuple Fail=f c Arity Atom  => jump Fail
 
-is_tagged_tuple f rxy A a
+is_tagged_tuple f? rxy A a
 
 # Test tuple & arity (head)
 
@@ -591,14 +593,14 @@ is_tuple Fail Literal=q => move Literal x | is_tuple Fail x
 is_tuple Fail=f c => jump Fail
 is_tuple Fail=f S=xy | test_arity Fail=f S=xy Arity => is_tuple_of_arity Fail S Arity
 
-is_tuple_of_arity f rxy A
+is_tuple_of_arity f? rxy A
 
-is_tuple f rxy
+is_tuple f? rxy
 
 test_arity Fail Literal=q Arity => move Literal x | test_arity Fail x Arity
 test_arity Fail=f c Arity => jump Fail
 
-test_arity f xy A
+test_arity f? xy A
 
 get_tuple_element Reg=x P1 D1=x | get_tuple_element Reg=x P2 D2=x | \
    get_tuple_element Reg=x P3 D3=x | \
@@ -619,16 +621,16 @@ is_integer Fail Literal=q => move Literal x | is_integer Fail x
 
 is_integer Fail=f S=x | allocate Need Regs => is_integer_allocate Fail S Need Regs
 
-is_integer_allocate f x t t
+is_integer_allocate f? x t t
 
-is_integer f xy
+is_integer f? xy
 
 is_list Fail=f n =>
 is_list Fail Literal=q => move Literal x | is_list Fail x
 is_list Fail=f c => jump Fail
-is_list f x
+is_list f? x
 %cold
-is_list f y
+is_list f? y
 %hot
 
 is_nonempty_list Fail=f S=x | allocate Need Rs => is_nonempty_list_allocate Fail S Need Rs
@@ -638,21 +640,21 @@ is_nonempty_list F=f x==0 | test_heap I1 I2 => is_nonempty_list_test_heap F I1 I
 is_nonempty_list Fail=f S=x | get_list S D1=x D2=x => \
   is_nonempty_list_get_list Fail S D1 D2
 
-is_nonempty_list_allocate f rx t t
-is_nonempty_list_test_heap f I t
-is_nonempty_list_get_list f rx x x
-is_nonempty_list f xy
+is_nonempty_list_allocate f? rx t t
+is_nonempty_list_test_heap f? I t
+is_nonempty_list_get_list f? rx x x
+is_nonempty_list f? xy
 
-is_atom f x
+is_atom f? x
 %cold
-is_atom f y
+is_atom f? y
 %hot
 is_atom Fail=f a =>
 is_atom Fail=f niq => jump Fail
 
-is_float f x
+is_float f? x
 %cold
-is_float f y
+is_float f? y
 %hot
 is_float Fail=f nai => jump Fail
 is_float Fail Literal=q => move Literal x | is_float Fail x
@@ -660,13 +662,13 @@ is_float Fail Literal=q => move Literal x | is_float Fail x
 is_nil Fail=f n =>
 is_nil Fail=f qia => jump Fail
 
-is_nil f xy
+is_nil f? xy
 
 is_binary Fail Literal=q => move Literal x | is_binary Fail x
 is_binary Fail=f c => jump Fail
-is_binary f x
+is_binary f? x
 %cold
-is_binary f y
+is_binary f? y
 %hot
 
 # XXX Deprecated.
@@ -674,27 +676,27 @@ is_bitstr Fail Term => is_bitstring Fail Term
 
 is_bitstring Fail Literal=q => move Literal x | is_bitstring Fail x
 is_bitstring Fail=f c => jump Fail
-is_bitstring f x
+is_bitstring f? x
 %cold
-is_bitstring f y
+is_bitstring f? y
 %hot
 
 is_reference Fail=f cq => jump Fail
-is_reference f x
+is_reference f? x
 %cold
-is_reference f y
+is_reference f? y
 %hot
 
 is_pid Fail=f cq => jump Fail
-is_pid f x
+is_pid f? x
 %cold
-is_pid f y
+is_pid f? y
 %hot
 
 is_port Fail=f cq => jump Fail
-is_port f x
+is_port f? x
 %cold
-is_port f y
+is_port f? y
 %hot
 
 is_boolean Fail=f a==am_true =>
@@ -702,19 +704,19 @@ is_boolean Fail=f a==am_false =>
 is_boolean Fail=f ac => jump Fail
 
 %cold
-is_boolean f xy
+is_boolean f? xy
 %hot
 
 is_function2 Fail=f acq Arity => jump Fail
 is_function2 Fail=f Fun a => jump Fail
 
-is_function2 f S s
+is_function2 f? S s
 
 # Allocating & initializing.
 allocate Need Regs | init Y => allocate_init Need Regs Y
 init Y1 | init Y2 => init2 Y1 Y2
 
-allocate_init t t y
+allocate_init t t? y
 
 #################################################################
 # External function and bif calls.
@@ -1004,13 +1006,13 @@ node y
 
 # Note: 'I' is sufficient because this instruction will only be used
 # if the arity fits in 24 bits.
-i_fast_element xy j I d
+i_fast_element xy j? I d
 
-i_element xy j s d
+i_element xy j? s d
 
-bif1 f b s d
+bif1 f? b s d
 bif1_body b s d
-i_bif2 f b s s d
+i_bif2 f? b s s d
 i_bif2_body b s s d
 
 #
@@ -1062,7 +1064,7 @@ make_fun2 OldIndex=u => gen_make_fun2(OldIndex)
 i_make_fun W t
 %hot
 
-is_function f xy
+is_function f? xy
 is_function Fail=f c => jump Fail
 
 func_info M F A => i_func_info u M F A
@@ -1091,24 +1093,24 @@ i_bs_match_string x f W W
 bs_get_integer2 Fail=f Ms=x Live=u Sz=sq Unit=u Flags=u Dst=d => \
 			gen_get_integer2(Fail, Ms, Live, Sz, Unit, Flags, Dst)
 
-i_bs_get_integer_small_imm x W f t x
-i_bs_get_integer_imm x W t f t x
-i_bs_get_integer f t t x s x
-i_bs_get_integer_8 x f x
-i_bs_get_integer_16 x f x
+i_bs_get_integer_small_imm x W f? t x
+i_bs_get_integer_imm x W t f? t x
+i_bs_get_integer f? t t x s x
+i_bs_get_integer_8 x f? x
+i_bs_get_integer_16 x f? x
 
 %if ARCH_64
-i_bs_get_integer_32 x f x
+i_bs_get_integer_32 x f? x
 %endif
 
 # Fetching binaries from binaries.
 bs_get_binary2 Fail=f Ms=x Live=u Sz=sq Unit=u Flags=u Dst=d => \
 			gen_get_binary2(Fail, Ms, Live, Sz, Unit, Flags, Dst)
 
-i_bs_get_binary_imm2 f x t W t x
-i_bs_get_binary2 f x t s t x
-i_bs_get_binary_all2 f x t t x
-i_bs_get_binary_all_reuse x f t
+i_bs_get_binary_imm2 f? x t W t x
+i_bs_get_binary2 f x t? s t x
+i_bs_get_binary_all2 f? x t t x
+i_bs_get_binary_all_reuse x f? t
 
 # Fetching float from binaries.
 bs_get_float2 Fail=f Ms=x Live=u Sz=s Unit=u Flags=u Dst=d => \
@@ -1116,29 +1118,32 @@ bs_get_float2 Fail=f Ms=x Live=u Sz=s Unit=u Flags=u Dst=d => \
 
 bs_get_float2 Fail=f Ms=x Live=u Sz=q Unit=u Flags=u Dst=d => jump Fail
 
-i_bs_get_float2 f x t s t x
+i_bs_get_float2 f? x t s t x
 
 # Miscellanous
 
 bs_skip_bits2 Fail=f Ms=x Sz=sq Unit=u Flags=u => \
 			gen_skip_bits2(Fail, Ms, Sz, Unit, Flags)
 
-i_bs_skip_bits_imm2 f x W
-i_bs_skip_bits2 f x xy t
-i_bs_skip_bits_all2 f x t
+i_bs_skip_bits_imm2 f? x W
+i_bs_skip_bits2 f? x xy t
+i_bs_skip_bits_all2 f? x t
 
 bs_test_tail2 Fail=f Ms=x Bits=u==0 => bs_test_zero_tail2 Fail Ms
 bs_test_tail2 Fail=f Ms=x Bits=u => bs_test_tail_imm2 Fail Ms Bits
-bs_test_zero_tail2 f x
-bs_test_tail_imm2 f x W
+bs_test_zero_tail2 f? x
+bs_test_tail_imm2 f? x W
 
 bs_test_unit F Ms Unit=u==8 => bs_test_unit8 F Ms
-bs_test_unit f x t
-bs_test_unit8 f x
+bs_test_unit f? x t
+bs_test_unit8 f? x
 
 # An y register operand for bs_context_to_binary is rare,
 # but can happen because of inlining.
 
+bs_context_to_binary Y=y | line L | badmatch Y => \
+    move Y x | bs_context_to_binary x | line L | badmatch x
+
 bs_context_to_binary Y=y => move Y x | bs_context_to_binary x
 
 bs_context_to_binary x
@@ -1147,14 +1152,14 @@ bs_context_to_binary x
 # Utf8/utf16/utf32 support. (R12B-5)
 #
 bs_get_utf8 Fail=f Ms=x u u Dst=d => i_bs_get_utf8 Ms Fail Dst
-i_bs_get_utf8 x f x
+i_bs_get_utf8 x f? x
 
 bs_skip_utf8 Fail=f Ms=x u u => i_bs_get_utf8 Ms Fail x
 
 bs_get_utf16 Fail=f Ms=x u Flags=u Dst=d => i_bs_get_utf16 Ms Fail Flags Dst
 bs_skip_utf16 Fail=f Ms=x u Flags=u => i_bs_get_utf16 Ms Fail Flags x
 
-i_bs_get_utf16 x f t x
+i_bs_get_utf16 x f? t x
 
 bs_get_utf32 Fail=f Ms=x Live=u Flags=u Dst=d => \
 	bs_get_integer2 Fail Ms Live i=32 u=1 Flags Dst | \
@@ -1183,13 +1188,13 @@ bs_init2 Fail Sz Words=u==0 Regs Flags Dst => \
 bs_init2 Fail Sz Words Regs Flags Dst => \
   i_bs_init_fail_heap Sz Words Fail Regs Dst
 
-i_bs_init_fail xy j t x
+i_bs_init_fail xy j? t? x
 
-i_bs_init_fail_heap s I j t x
+i_bs_init_fail_heap s I j? t? x
 
-i_bs_init W t x
+i_bs_init W t? x
 
-i_bs_init_heap W I t x
+i_bs_init_heap W I t? x
 
 
 bs_init_bits Fail Sz=o Words Regs Flags Dst => system_limit Fail
@@ -1202,16 +1207,16 @@ bs_init_bits Fail Sz Words=u==0 Regs Flags Dst => \
 bs_init_bits Fail Sz Words Regs Flags Dst => \
   i_bs_init_bits_fail_heap Sz Words Fail Regs Dst
 
-i_bs_init_bits_fail xy j t x
+i_bs_init_bits_fail xy j? t? x
 
-i_bs_init_bits_fail_heap s I j t x
+i_bs_init_bits_fail_heap s I j? t? x
 
-i_bs_init_bits W t x
-i_bs_init_bits_heap W I t x
+i_bs_init_bits W t? x
+i_bs_init_bits_heap W I t? x
 
 bs_add Fail S1=i==0 S2 Unit=u==1 D => move S2 D
 
-bs_add j s s t x
+bs_add j? s s t? x
 
 bs_append Fail Size Extra Live Unit Bin Flags Dst => \
   move Bin x | i_bs_append Fail Extra Live Unit Size Dst
@@ -1221,8 +1226,8 @@ bs_private_append Fail Size Unit Bin Flags Dst => \
 
 bs_init_writable
 
-i_bs_append j I t t s x
-i_bs_private_append j t s S x
+i_bs_append j? I t? t s x
+i_bs_private_append j? t s S x
 
 #
 # Storing integers into binaries.
@@ -1231,8 +1236,8 @@ i_bs_private_append j t s S x
 bs_put_integer Fail=j Sz=sq Unit=u Flags=u Src=s => \
 			gen_put_integer(Fail, Sz, Unit, Flags, Src)
 
-i_new_bs_put_integer j s t s
-i_new_bs_put_integer_imm j W t s
+i_new_bs_put_integer j? s t s
+i_new_bs_put_integer_imm j? W t s
 
 #
 # Utf8/utf16/utf32 support. (R12B-5)
@@ -1248,14 +1253,14 @@ i_bs_utf16_size s x
 
 bs_put_utf8 Fail u Src=s => i_bs_put_utf8 Fail Src
 
-i_bs_put_utf8 j s
+i_bs_put_utf8 j? s
 
-bs_put_utf16 j t s
+bs_put_utf16 j? t s
 
 bs_put_utf32 Fail=j Flags=u Src=s => \
    i_bs_validate_unicode Fail Src | bs_put_integer Fail i=32 u=1 Flags Src
 
-i_bs_validate_unicode j s
+i_bs_validate_unicode j? s
 
 #
 # Storing floats into binaries.
@@ -1265,8 +1270,8 @@ bs_put_float Fail Sz=q Unit Flags Val => badarg Fail
 bs_put_float Fail=j Sz=s Unit=u Flags=u Src=s => \
 			gen_put_float(Fail, Sz, Unit, Flags, Src)
 
-i_new_bs_put_float j s t s
-i_new_bs_put_float_imm j W t s
+i_new_bs_put_float j? s t s
+i_new_bs_put_float_imm j? W t s
 
 #
 # Storing binaries into binaries.
@@ -1275,9 +1280,9 @@ i_new_bs_put_float_imm j W t s
 bs_put_binary Fail=j Sz=s Unit=u Flags=u Src=s => \
 			gen_put_binary(Fail, Sz, Unit, Flags, Src)
 
-i_new_bs_put_binary j s t s
-i_new_bs_put_binary_imm j W s
-i_new_bs_put_binary_all j s t
+i_new_bs_put_binary j? s t s
+i_new_bs_put_binary_imm j? W s
+i_new_bs_put_binary_all j? s t
 
 #
 # Warning: The i_bs_put_string and i_new_bs_put_string instructions
@@ -1391,12 +1396,12 @@ new_map Dst Live Size Rest=* | is_small_map_literal_keys(Size, Rest) => \
 new_map d t I
 i_new_small_map_lit d t q
 update_map_assoc s d t I
-update_map_exact j s d t I
+update_map_exact j? s d t I
 
 is_map Fail Lit=q | literal_is_map(Lit) =>
 is_map Fail cq => jump Fail
 
-is_map f xy
+is_map f? xy
 
 ## Transform has_map_fields #{ K1 := _, K2 := _ } to has_map_elements
 
@@ -1410,14 +1415,14 @@ get_map_elements Fail Src=xy Size=u==2 Rest=* => \
 get_map_elements Fail Src Size Rest=* | map_key_sort(Size, Rest) => \
    gen_get_map_elements(Fail, Src, Size, Rest)
 
-i_get_map_elements f s I
+i_get_map_elements f? s I
 
 i_get_map_element Fail Src=xy Key=y Dst => \
     move Key x | i_get_map_element Fail Src x Dst
 
-i_get_map_element_hash f xy c I xy
+i_get_map_element_hash f? xy c I xy
 
-i_get_map_element f xy x xy
+i_get_map_element f? xy x xy
 
 #
 # Convert the plus operations to a generic plus instruction.
@@ -1485,32 +1490,32 @@ gc_bif1 Fail I u$bif:erlang:bnot/1 Src Dst=d => i_int_bnot Fail Src I Dst
 
 i_increment rxy W t d
 
-i_plus x xy j t d
-i_plus s s  j t d
+i_plus x xy j? t d
+i_plus s s  j? t d
 
-i_minus x x j t d
-i_minus s s j t d
+i_minus x x j? t d
+i_minus s s j? t d
 
-i_times j t s s d
+i_times j? t s s d
 
-i_m_div j t s s d
-i_int_div j t s s d
+i_m_div j? t s s d
+i_int_div j? t s s d
 
-i_rem x x j t d
-i_rem s s j t d
+i_rem x x j? t d
+i_rem s s j? t d
 
-i_bsl s s j t d
-i_bsr s s j t d
+i_bsl s s j? t d
+i_bsr s s j? t d
 
-i_band x c j t d
-i_band s s j t d
+i_band x c j? t d
+i_band s s j? t d
 
-i_bor j I s s d
-i_bxor j I s s d
+i_bor j? I s s d
+i_bxor j? I s s d
 
 i_int_bnot Fail Src=c Live Dst => move Src x | i_int_bnot Fail x Live Dst
 
-i_int_bnot j S t d
+i_int_bnot j? S t d
 
 #
 # Old guard BIFs that creates heap fragments are no longer allowed.
@@ -1534,9 +1539,9 @@ gc_bif2 Fail I Bif S1 S2 Dst => \
 gc_bif3 Fail I Bif S1 S2 S3 Dst => \
 	gen_guard_bif3(Fail, I, Bif, S1, S2, S3, Dst)
 
-i_gc_bif1 j W s t d
+i_gc_bif1 j? W s t? d
 
-i_gc_bif2 j W t s s d
+i_gc_bif2 j? W t? s s d
 
 ii_gc_bif3/7
 
@@ -1545,7 +1550,7 @@ ii_gc_bif3/7
 ii_gc_bif3 Fail Bif Live S1 S2 S3 Dst => \
   move S1 x | i_gc_bif3 Fail Bif Live S2 S3 Dst
 
-i_gc_bif3 j W t s s d
+i_gc_bif3 j? W t? s s d
 
 #
 # The following instruction is specially handled in beam_load.c
@@ -1563,8 +1568,19 @@ on_load
 #
 # R14A.
 #
-recv_mark f
+# Modified in OTP 21 because it turns out that we don't need the
+# label after all.
+#
+
+recv_mark f => i_recv_mark
+i_recv_mark
 
 recv_set Fail | label Lbl | loop_rec Lf Reg => \
    i_recv_set | label Lbl | loop_rec Lf Reg
 i_recv_set
+
+#
+# OTP 21.
+#
+
+build_stacktrace
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h
index 9106091ca6..bf7d310568 100644
--- a/erts/emulator/beam/sys.h
+++ b/erts/emulator/beam/sys.h
@@ -824,11 +824,16 @@ int erts_sys_unsetenv(char *key);
 char *erts_read_env(char *key);
 void erts_free_read_env(void *value);
 
-#if defined(ERTS_THR_HAVE_SIG_FUNCS) && !defined(ETHR_UNUSABLE_SIGUSRX)
+#if defined(ERTS_THR_HAVE_SIG_FUNCS) &&                         \
+    (!defined(ETHR_UNUSABLE_SIGUSRX) || defined(SIGRTMIN))
 extern void sys_thr_resume(erts_tid_t tid);
 extern void sys_thr_suspend(erts_tid_t tid);
-#define ERTS_SYS_SUSPEND_SIGNAL SIGUSR2
-#endif
+#ifdef SIGRTMIN
+#define ERTS_SYS_SUSPEND_SIGNAL (SIGRTMIN+1)
+#else
+#define ERTS_SYS_SUSPEND_SIGNAL (SIGUSR2)
+#endif /* SIGRTMIN */
+#endif /* HAVE_SIG_FUNCS */
 
 /* utils.c */
 
@@ -1170,4 +1175,52 @@ int erts_get_printable_characters(void);
 
 void erts_init_sys_common_misc(void);
 
+ERTS_GLB_INLINE Sint erts_raw_env_7bit_ascii_char_need(int encoding);
+ERTS_GLB_INLINE byte *erts_raw_env_7bit_ascii_char_put(byte c, byte *p,
+                                                       int encoding);
+ERTS_GLB_INLINE int  erts_raw_env_char_is_7bit_ascii_char(byte c, byte *p,
+                                                          int encoding);
+ERTS_GLB_INLINE byte *erts_raw_env_next_char(byte *p, int encoding);
+
+#if ERTS_GLB_INLINE_INCL_FUNC_DEF
+
+ERTS_GLB_INLINE Sint
+erts_raw_env_7bit_ascii_char_need(int encoding)
+{
+    return (encoding == ERL_FILENAME_WIN_WCHAR) ? 2 : 1;
+}
+
+ERTS_GLB_INLINE byte *
+erts_raw_env_7bit_ascii_char_put(byte c,
+                                 byte *p,
+                                 int encoding)
+{
+    *(p++) = c;
+    if (encoding == ERL_FILENAME_WIN_WCHAR)
+        *(p++) = 0;
+    return p;
+}
+
+ERTS_GLB_INLINE int
+erts_raw_env_char_is_7bit_ascii_char(byte c,
+                                     byte *p,
+                                     int encoding)
+{
+    if (encoding == ERL_FILENAME_WIN_WCHAR)
+        return (p[0] == c) & (p[1] == 0);
+    else
+        return p[0] == c;
+}
+
+ERTS_GLB_INLINE byte *
+erts_raw_env_next_char(byte *p, int encoding)
+{
+    if (encoding == ERL_FILENAME_WIN_WCHAR)
+        return p + 2;
+    else
+        return p + 1;
+}
+
+#endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */
+
 #endif
diff --git a/erts/emulator/drivers/common/efile_drv.c b/erts/emulator/drivers/common/efile_drv.c
deleted file mode 100644
index 4e1d2f0d7f..0000000000
--- a/erts/emulator/drivers/common/efile_drv.c
+++ /dev/null
@@ -1,4295 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 1996-2017. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-/*
- * Purpose: Provides file and directory operations.
- *
- * This file is generic, and does the work of decoding the commands
- * and encoding the responses.  System-specific functions are found in
- * the unix_efile.c and win_efile.c files.
- */
-
-/* Operations */
-
-#define FILE_OPEN		 1 /* Essential for startup */
-#define FILE_READ		 2
-#define FILE_LSEEK		 3
-#define FILE_WRITE		 4
-#define FILE_FSTAT		 5 /* Essential for startup */
-#define FILE_PWD                 6 /* Essential for startup */
-#define FILE_READDIR             7 /* Essential for startup */
-#define FILE_CHDIR               8
-#define FILE_FSYNC               9
-#define FILE_MKDIR              10
-#define FILE_DELETE             11
-#define FILE_RENAME             12
-#define FILE_RMDIR              13
-#define FILE_TRUNCATE           14
-#define FILE_READ_FILE          15 /* Essential for startup */
-#define FILE_WRITE_INFO		16
-#define FILE_LSTAT            	19
-#define FILE_READLINK        	20
-#define FILE_LINK             	21
-#define FILE_SYMLINK          	22
-#define FILE_CLOSE		23
-#define FILE_PWRITEV		24
-#define FILE_PREADV		25
-#define FILE_SETOPT		26
-#define FILE_IPREAD             27
-#define FILE_ALTNAME            28
-#define FILE_READ_LINE          29
-#define FILE_FDATASYNC          30
-#define FILE_FADVISE            31
-#define FILE_SENDFILE           32
-#define FILE_FALLOCATE          33
-#define FILE_CLOSE_ON_PORT_EXIT 34
-/* Return codes */
-
-#define FILE_RESP_OK         0
-#define FILE_RESP_ERROR      1
-#define FILE_RESP_DATA       2
-#define FILE_RESP_NUMBER     3
-#define FILE_RESP_INFO       4
-#define FILE_RESP_NUMERR     5
-#define FILE_RESP_LDATA      6
-#define FILE_RESP_N2DATA     7
-#define FILE_RESP_EOF        8
-#define FILE_RESP_FNAME      9
-#define FILE_RESP_ALL_DATA  10
-#define FILE_RESP_LFNAME    11
-
-/* Options */
-
-#define FILE_OPT_DELAYED_WRITE 0
-#define FILE_OPT_READ_AHEAD    1
-
-/* IPREAD variants */
-
-#define IPREAD_S32BU_P32BU 0
-
-/* Limits */
-
-#define FILE_SEGMENT_READ  (256*1024)
-#define FILE_SEGMENT_WRITE (256*1024)
-
-/* Internal */
-
-/* Set to 1 to test having read_ahead implicitly for read_line */ 
-#define ALWAYS_READ_LINE_AHEAD 0
-
-
-/* Must not be possible to get from malloc()! */
-#define FILE_FD_INVALID ((Sint)(-1))
-
-#ifdef HAVE_CONFIG_H
-#  include "config.h"
-#endif
-
-#include <ctype.h>
-#include <sys/types.h>
-#include <stdlib.h>
-
-/* Need (NON)BLOCKING macros for sendfile */
-#ifndef WANT_NONBLOCKING
-#define WANT_NONBLOCKING
-#endif
-
-#include "sys.h"
-
-#include "erl_driver.h"
-#include "erl_efile.h"
-#include "erl_threads.h"
-#include "gzio.h"
-#include "dtrace-wrapper.h" 
-
-
-static ErlDrvSysInfo sys_info;
-
-/* For explanation of this var, see comment for same var in erl_async.c */
-static unsigned gcc_optimizer_hack = 0;
-
-#ifdef  USE_VM_PROBES
-
-#define DTRACE_EFILE_BUFSIZ 128
-
-#define DTRACE_INVOKE_SETUP(op) \
-    do { DTRACE3(efile_drv_int_entry, d->sched_i1, d->sched_i2, op); } while (0)
-#define DTRACE_INVOKE_SETUP_BY_NAME(op) \
-    struct t_data *d = (struct t_data *) data ; \
-    DTRACE_INVOKE_SETUP(op)
-#define DTRACE_INVOKE_RETURN(op) \
-    do { DTRACE3(efile_drv_int_return, d->sched_i1, d->sched_i2, \
-                 op); } while (0) ; gcc_optimizer_hack++ ;
-
-/* Assign human-friendlier id numbers to scheduler & I/O worker threads */
-int             dt_driver_idnum = 0;
-int             dt_driver_io_worker_base = 5000;
-erts_mtx_t      dt_driver_mutex;
-pthread_key_t   dt_driver_key;
-
-typedef struct {
-    int         thread_num;
-    Uint64      tag;
-} dt_private;
-
-dt_private *get_dt_private(int);
-#else  /* USE_VM_PROBES */
-#define DTRACE_INVOKE_SETUP(op)            do {} while (0)
-#define DTRACE_INVOKE_SETUP_BY_NAME(op)    do {} while (0)
-#define DTRACE_INVOKE_RETURN(op)           do {} while (0)
-#endif  /* USE_VM_PROBES */
-
-/* #define TRACE 1 */
-#ifdef TRACE
-#    define TRACE_C(c) do { putchar(c); fflush(stdout); } while (0)
-#    define TRACE_S(s) do { fputs((s), stdout); fflush(stdout); } while (0)
-#    define TRACE_F(args) do { printf args ;fflush(stdout); } while (0)
-#else
-#    define TRACE_C(c) ((void)(0))
-#    define TRACE_S(s) ((void)(0))
-#    define TRACE_F(args) ((void)(0))
-#endif
-
-
-#define THRDS_AVAILABLE (sys_info.async_threads > 0)
-#ifdef HARDDEBUG /* HARDDEBUG in io.c is expected too */
-#define TRACE_DRIVER fprintf(stderr, "Efile: ")
-#else
-#define TRACE_DRIVER
-#endif
-#define MUTEX_INIT(m, p) do { IF_THRDS { TRACE_DRIVER; (m = driver_pdl_create(p)); } } while (0)
-#define MUTEX_LOCK(m)    do { IF_THRDS { TRACE_DRIVER; driver_pdl_lock(m);   } } while (0)
-#define MUTEX_UNLOCK(m)  do { IF_THRDS { TRACE_DRIVER; driver_pdl_unlock(m); } } while (0)
-#define IF_THRDS if (THRDS_AVAILABLE)
-
-
-#define SENDFILE_FLGS_USE_THREADS (1 << 0)
-/**
- * On DARWIN sendfile can deadlock with close if called in
- * different threads. So until Apple fixes so that sendfile
- * is not buggy we disable usage of the async pool for
- * DARWIN. The testcase t_sendfile_crashduring reproduces
- * this error when using +A 10 and enabling SENDFILE_FLGS_USE_THREADS.
- */
-#if defined(__APPLE__) && defined(__MACH__)
-#define USE_THRDS_FOR_SENDFILE(DATA) 0
-#else
-#define USE_THRDS_FOR_SENDFILE(DATA) (DATA->flags & SENDFILE_FLGS_USE_THREADS)
-#endif /* defined(__APPLE__) && defined(__MACH__) */
-
-
-
-#if 0
-/* Experimental, for forcing all file operations to use the same thread. */
-   static unsigned file_fixed_key = 1;
-#  define KEY(desc) (&file_fixed_key)
-#else
-#  define KEY(desc) (&(desc)->key)
-#endif
-
-#ifndef MAX
-#  define MAX(x, y) (((x) > (y)) ? (x) : (y))
-#endif
-
-#ifdef FILENAMES_16BIT
-#ifdef USE_VM_PROBES
-#error 16bit characters in filenames and dtrace in combination is not supported.
-#endif
-#  define FILENAME_BYTELEN(Str) filename_len_16bit(Str)
-#  define FILENAME_COPY(To,From) filename_cpy_16bit((To),(From)) 
-#  define FILENAME_CHARSIZE 2
-
-   static int filename_len_16bit(char *str) 
-   {
-       char *p = str;
-       while(*p != '\0' || p[1] != '\0') {
-	   p += 2;
-       }
-       return (p - str);
-   }
-
-   static void filename_cpy_16bit(char *to, char *from) 
-   {
-       while(*from != '\0' || from[1] != '\0') {
-	   *to++ = *from++;
-	   *to++ = *from++;
-       }
-       *to++ = *from++;
-       *to++ = *from++;
-   }
-
-#else
-#  define FILENAME_BYTELEN(Str) strlen(Str)
-#  define FILENAME_COPY(To,From) strcpy(To,From) 
-#  define FILENAME_CHARSIZE 1
-#endif
-
-#if     (MAXPATHLEN+1)*FILENAME_CHARSIZE+1 > BUFSIZ
-#  define    RESBUFSIZE  ((MAXPATHLEN+1)*FILENAME_CHARSIZE+1)
-#else
-#  define    RESBUFSIZE  BUFSIZ
-#endif
-
-#define READDIR_CHUNKS (5)
-
-
-
-#if ALWAYS_READ_LINE_AHEAD
-#define DEFAULT_LINEBUF_SIZE 2048
-#else
-#define DEFAULT_LINEBUF_SIZE 512 /* Small, it's usually discarded anyway */ 
-#endif
-
-typedef unsigned char uchar;
-
-static ErlDrvData file_start(ErlDrvPort port, char* command);
-static int file_init(void);
-static void file_stop(ErlDrvData);
-static void file_output(ErlDrvData, char* buf, ErlDrvSizeT len);
-static ErlDrvSSizeT file_control(ErlDrvData, unsigned int command,
-				 char* buf, ErlDrvSizeT len,
-				 char **rbuf, ErlDrvSizeT rlen);
-static void file_timeout(ErlDrvData);
-static void file_outputv(ErlDrvData, ErlIOVec*);
-static void file_async_ready(ErlDrvData, ErlDrvThreadData);
-static void file_flush(ErlDrvData);
-
-#ifdef HAVE_SENDFILE
-static void file_ready_output(ErlDrvData data, ErlDrvEvent event);
-static void file_stop_select(ErlDrvEvent event, void* _);
-#endif /* HAVE_SENDFILE */
-
-
-enum e_timer {timer_idle, timer_again, timer_write};
-#ifdef HAVE_SENDFILE
-enum e_sendfile {sending, not_sending};
-#define SENDFILE_USE_THREADS (1 << 0)
-#endif /* HAVE_SENDFILE */
-
-struct t_data;
-
-typedef struct {
-    SWord           fd;
-    ErlDrvPort      port;
-    unsigned int    key;      /* Async queue key */
-    unsigned        flags;    /* Original flags from FILE_OPEN. */
-    void          (*invoke)(void *);
-    struct t_data  *d;
-    void          (*free)(void *);
-    struct t_data  *cq_head;  /* Queue of incoming commands */
-    struct t_data  *cq_tail;  /* -""- */
-    enum e_timer    timer_state;
-#ifdef HAVE_SENDFILE
-    enum e_sendfile sendfile_state;
-#endif /* HAVE_SENDFILE */
-    size_t          read_bufsize;
-    ErlDrvBinary   *read_binp;
-    size_t          read_offset;
-    size_t          read_size;
-    size_t          write_bufsize;
-    unsigned long   write_delay;
-    int             write_error;
-    Efile_error     write_errInfo;
-    ErlDrvPDL       q_mtx;    /* Mutex for the driver queue, known by the emulator. Also used for
-				 mutual exclusion when accessing field(s) below. */
-    size_t          write_buffered;
-#ifdef USE_VM_PROBES
-    int             idnum;      /* Unique ID # for this driver thread/desc */
-    char            port_str[DTRACE_TERM_BUF_SIZE];
-#endif
-} file_descriptor;
-
-
-static int reply_error(file_descriptor*, Efile_error* errInfo);
-
-struct erl_drv_entry efile_driver_entry = {
-    file_init,
-    file_start,
-    file_stop,
-    file_output,
-    NULL,
-#ifdef HAVE_SENDFILE
-    file_ready_output,
-#else
-    NULL,
-#endif /* HAVE_SENDFILE */
-    "efile",
-    NULL,
-    NULL,
-    file_control,
-    file_timeout,
-    file_outputv,
-    file_async_ready,
-    file_flush,
-    NULL,
-    NULL,
-    ERL_DRV_EXTENDED_MARKER,
-    ERL_DRV_EXTENDED_MAJOR_VERSION,
-    ERL_DRV_EXTENDED_MINOR_VERSION,
-    ERL_DRV_FLAG_USE_PORT_LOCKING,
-    NULL,
-    NULL,
-#ifdef HAVE_SENDFILE
-    file_stop_select
-#else
-    NULL
-#endif /* HAVE_SENDFILE */
-};
-
-
-
-static int thread_short_circuit;
-
-#define DRIVER_ASYNC(level, desc, f_invoke, data, f_free) \
-if (thread_short_circuit >= (level)) { \
-    (*(f_invoke))(data); \
-    file_async_ready((ErlDrvData)(desc), (data)); \
-} else { \
-    driver_async((desc)->port, KEY(desc), (f_invoke), (data), (f_free)); \
-}
-
-
-
-struct t_pbuf_spec {
-    Sint64 offset;
-    size_t size;
-};
-
-struct t_pwritev {
-    ErlDrvPort         port;
-    ErlDrvPDL          q_mtx;
-    size_t             size;
-    unsigned           cnt;
-    unsigned           n;
-    struct t_pbuf_spec specs[1];
-};
-
-struct t_preadv {
-    ErlIOVec eiov;
-    unsigned n;
-    unsigned cnt;
-    size_t   size;
-    Sint64   offsets[1];
-};
-
-#define READDIR_BUFSIZE (8*1024)*READDIR_CHUNKS
-#if READDIR_BUFSIZE < (1 + (2 + MAXPATHLEN)*FILENAME_CHARSIZE*READDIR_CHUNKS)
-#  undef READDIR_BUFSIZE
-#  define READDIR_BUFSIZE (1 + (2 + MAXPATHLEN)*FILENAME_CHARSIZE*READDIR_CHUNKS)
-#endif
-
-struct t_readdir_buf {
-     struct t_readdir_buf *next;
-     size_t n;
-     char buf[READDIR_BUFSIZE];
-};
-
-struct t_data
-{
-    struct t_data *next;
-    int            command;
-    int            level;
-    void         (*invoke)(void *);
-    void         (*free)(void *);
-    void           *data_to_free; /* used by FILE_CLOSE_ON_PORT_EXIT only */
-    int            again;
-    int            reply;
-#ifdef  USE_VM_PROBES
-    int               sched_i1;
-    Uint64            sched_i2;
-    char              sched_utag[DTRACE_EFILE_BUFSIZ+1];
-#endif
-    int            result_ok;
-    Efile_error    errInfo;
-    int            flags;
-    SWord          fd;
-    int            is_fd_unused;
-    /**/
-    Efile_info        info;
-    EFILE_DIR_HANDLE  dir_handle; /* Handle to open directory. */
-    ErlDrvBinary     *bin;
-    int               drive;
-    size_t            n;
-    /*off_t             offset;*/
-    /*size_t            bytesRead; Bytes read from the file. */
-    /**/
-    union {
-	struct {
-	    Sint64 offset;
-	    int    origin;
-	    Sint64 location;
-	} lseek;
-	struct {
-	    ErlDrvPort    port;
-	    ErlDrvPDL     q_mtx;
-	    size_t        size;
-	    size_t        reply_size;
-	} writev;
-	struct t_pwritev pwritev;
-	struct t_preadv  preadv;
-	struct {
-	    ErlDrvBinary *binp;
-	    size_t        bin_offset;
-	    size_t        bin_size;
-	    size_t        size;
-	} read;
-	struct {
-	    ErlDrvBinary *binp; /* in - out */
-	    size_t        read_offset; /* in - out */
-	    size_t        read_size; /* in - out */
-	    size_t        nl_pos; /* out */
-	    short         nl_skip; /* out, 0 or 1 */
-#if !ALWAYS_READ_LINE_AHEAD
-	    short         read_ahead; /* in, bool */
-#endif
-	} read_line;
-	struct {
-	    ErlDrvBinary *binp;
-	    int           size;
-	    int           offset;
-	} read_file;
-	struct {
-	    struct t_readdir_buf *first_buf;
-	    struct t_readdir_buf *last_buf;
-	} read_dir;
-	struct {
-	    Sint64 offset;
-	    Sint64 length;
-	    int advise;
-	} fadvise;
-#ifdef HAVE_SENDFILE
-	struct {
-	    ErlDrvPort port;
-	    ErlDrvPDL q_mtx;
-	    int out_fd;
-	    off_t offset;
-	    Uint64 nbytes;
-	    Uint64 written;
-	} sendfile;
-#endif /* HAVE_SENDFILE */
-	struct {
-	    Sint64 offset;
-	    Sint64 length;
-	} fallocate;
-    } c;
-    char b[1];
-};
-
-#define EF_ALLOC(S)		driver_alloc((S))
-#define EF_REALLOC(P, S)	driver_realloc((P), (S))
-#define EF_SAFE_ALLOC(S)	ef_safe_alloc((S))
-#define EF_SAFE_REALLOC(P, S)	ef_safe_realloc((P), (S))
-#define EF_FREE(P)		do { if((P)) driver_free((P)); } while(0)
-
-static void *ef_safe_alloc(Uint s)
-{
-    void *p = EF_ALLOC(s);
-    if (!p) erts_exit(ERTS_ERROR_EXIT, "efile drv: Can't allocate %lu bytes of memory\n", (unsigned long)s);
-    return p;
-}
-
-/*********************************************************************
- * ErlIOVec manipulation functions.
- */
-
-/* char EV_CHAR_P(ErlIOVec *ev, int p, int q) */
-#define EV_CHAR_P(ev, p, q)			\
-    (((char *)(ev)->iov[q].iov_base) + (p))
-
-/* int EV_GET_CHAR(ErlIOVec *ev, char *p, int *pp, int *qp) */
-#define EV_GET_CHAR(ev, p, pp, qp) efile_ev_get_char(ev, p ,pp, qp)
-static int
-efile_ev_get_char(ErlIOVec *ev, char *p, size_t *pp, size_t *qp) {
-    if (*pp + 1 <= ev->iov[*qp].iov_len) {
-	*p = *EV_CHAR_P(ev, *pp, *qp);
-	if (*pp + 1 < ev->iov[*qp].iov_len)
-	    *pp += 1;
-	else {
-	    *qp += 1;
-	    *pp = 0;
-	}
-	return !0;
-    }
-    return 0;
-}
-
-/* Uint32 EV_UINT32(ErlIOVec *ev, int p, int q)*/
-#define EV_UINT32(ev, p, q)						\
-    ((Uint32) ((unsigned char *)(ev)->iov[q].iov_base)[p])
-
-/* int EV_GET_UINT32(ErlIOVec *ev, Uint32 *p, int *pp, int *qp) */
-#define EV_GET_UINT32(ev, p, pp, qp) efile_ev_get_uint32(ev, p, pp, qp)
-static int
-efile_ev_get_uint32(ErlIOVec *ev, Uint32 *p, size_t *pp, size_t *qp) {
-    if (*pp + 4 <= ev->iov[*qp].iov_len) {
-	*p = (EV_UINT32(ev, *pp,   *qp) << 24)
-	    | (EV_UINT32(ev, *pp + 1, *qp) << 16)
-	    | (EV_UINT32(ev, *pp + 2, *qp) << 8)
-	    | (EV_UINT32(ev, *pp + 3, *qp));
-	if (*pp + 4 < ev->iov[*qp].iov_len)
-	    *pp += 4;
-	else {
-	    *qp += 1;
-	    *pp = 0;
-	}
-	return !0;
-    }
-    return 0;
-}
-
-/* Uint64 EV_UINT64(ErlIOVec *ev, int p, int q)*/
-#define EV_UINT64(ev, p, q)						\
-    ((Uint64) ((unsigned char *)(ev)->iov[q].iov_base)[p])
-
-/* int EV_GET_UINT64(ErlIOVec *ev, Uint64 *p, int *pp, int *qp) */
-#define EV_GET_UINT64(ev, p, pp, qp) efile_ev_get_uint64(ev, p, pp, qp)
-static int
-efile_ev_get_uint64(ErlIOVec *ev, Uint64 *p, size_t *pp, size_t *qp) {
-    if (*pp + 8 <= ev->iov[*qp].iov_len) {
-	*p = (EV_UINT64(ev, *pp, *qp) << 56)
-	    | (EV_UINT64(ev, *pp + 1, *qp) << 48)
-	    | (EV_UINT64(ev, *pp + 2, *qp) << 40)
-	    | (EV_UINT64(ev, *pp + 3, *qp) << 32)
-	    | (EV_UINT64(ev, *pp + 4, *qp) << 24)
-	    | (EV_UINT64(ev, *pp + 5, *qp) << 16)
-	    | (EV_UINT64(ev, *pp + 6, *qp) << 8)
-	    | (EV_UINT64(ev, *pp + 7, *qp));
-	if (*pp + 8 < ev->iov[*qp].iov_len)
-	    *pp += 8;
-	else {
-	    *qp += 1;
-	    *pp = 0;
-	}
-	return !0;
-    }
-    return 0;
-}
-
-/* int EV_GET_SINT64(ErlIOVec *ev, Uint64 *p, int *pp, int *qp) */
-#define EV_GET_SINT64(ev, p, pp, qp) efile_ev_get_sint64(ev, p, pp, qp)
-static int
-efile_ev_get_sint64(ErlIOVec *ev, Sint64 *p, size_t *pp, size_t *qp) {
-    Uint64 *tmp = (Uint64*)p;
-    return EV_GET_UINT64(ev, tmp, pp, qp);
-}
-
-#if 0
-
-static void ev_clear(ErlIOVec *ev) {
-    ASSERT(ev);
-    ev->size = 0;
-    ev->vsize = 0;
-    ev->iov = NULL;
-    ev->binv = NULL;
-}
-
-/* Assumes that ->iov and ->binv were allocated with sys_alloc().
- */
-static void ev_free(ErlIOVec *ev) {
-    if (! ev) {
-	return;
-    }
-    if (ev->vsize > 0) {
-	int i;
-	ASSERT(ev->iov);
-	ASSERT(ev->binv);
-	for (i = 0; i < ev->vsize; i++) {
-	    if (ev->binv[i]) {
-		driver_free_binary(ev->binv[i]);
-	    }
-	}
-	EF_FREE(ev->iov);
-	EF_FREE(ev->binv);
-    }
-}
-
-/* Copy the contents from source to dest.
- * Data in binaries is not copied, just the pointers; 
- * and refc is incremented.
- */
-static ErlIOVec *ev_copy(ErlIOVec *dest, ErlIOVec *source) {
-    int *ip;
-    ASSERT(dest);
-    ASSERT(source);
-    if (source->vsize == 0) {
-	/* Empty source */
-	ev_clear(dest);
-	return dest;
-    }
-    /* Allocate ->iov and ->binv */
-    dest->iov = EF_ALLOC(sizeof(*dest->iov) * source->vsize);
-    if (! dest->iov) {
-	return NULL;
-    }
-    dest->binv = EF_ALLOC(sizeof(*dest->binv) * source->vsize);
-    if (! dest->binv) {
-	EF_FREE(dest->iov);
-	return NULL;
-    }
-    dest->size = source->size;
-    /* Copy one vector element at the time. 
-     * Use *ip as an alias for dest->vsize to improve readabiliy.
-     * Keep dest consistent in every iteration by using 
-     * dest->vsize==*ip as loop variable.
-     */
-    for (ip = &dest->vsize, *ip = 0;  *ip < source->vsize;  (*ip)++) {
-	if (source->iov[*ip].iov_len == 0) {
-	    /* Empty vector element */
-	    dest->iov[*ip].iov_len = 0;
-	    dest->iov[*ip].iov_base = NULL;
-	    dest->binv[*ip] = NULL;
-	} else {
-	    /* Non empty vector element */
-	    if (source->binv[*ip]) {
-		/* Contents in binary - copy pointers and increment refc */
-		dest->iov[*ip] = source->iov[*ip];
-		dest->binv[*ip] = source->binv[*ip];
-		driver_binary_inc_refc(source->binv[*ip]);
-	    } else {
-		/* Contents not in binary - allocate new binary and copy data */
-		if (! (dest->binv[*ip] = 
-		       driver_alloc_binary(source->iov[*ip].iov_len))) {
-		    goto failed;
-		}
-		sys_memcpy(dest->binv[*ip]->orig_bytes,
-			   source->iov[*ip].iov_base,
-			   source->iov[*ip].iov_len);
-		dest->iov[*ip].iov_base = dest->binv[*ip]->orig_bytes;
-		dest->iov[*ip].iov_len = source->iov[*ip].iov_len;
-	    }
-	}
-    }
-    return dest;
- failed:
-    ev_free(dest);
-    return NULL;
-}
-
-#endif
-
-
-
-/*********************************************************************
- * Command queue functions
- */
-
-static void cq_enq(file_descriptor *desc, struct t_data *d) {
-    ASSERT(d);
-    if (desc->cq_head) {
-	ASSERT(desc->cq_tail);
-	ASSERT(!desc->cq_tail->next);
-	desc->cq_tail = desc->cq_tail->next = d;
-    } else {
-	ASSERT(desc->cq_tail == NULL);
-	desc->cq_head = desc->cq_tail = d;
-    }
-    d->next = NULL;
-}
-
-static struct t_data *cq_deq(file_descriptor *desc) {
-    struct t_data *d = desc->cq_head;
-    ASSERT(d || (!d && !desc->cq_tail));
-    if (d) {
-	ASSERT(!d->next || (d->next && desc->cq_tail != d));
-	if ((desc->cq_head = d->next) == NULL) {
-	    ASSERT(desc->cq_tail == d);
-	    desc->cq_tail = NULL;
-	}
-    }	
-    return d;
-}
-
-
-/*********************************************************************
- * Driver entry point -> init
- */
-static int 
-file_init(void)
-{
-    char buf[21]; /* enough to hold any 64-bit integer */
-    size_t bufsz = sizeof(buf);
-    thread_short_circuit = (erl_drv_getenv("ERL_EFILE_THREAD_SHORT_CIRCUIT",
-					   buf,
-					   &bufsz) == 0
-			    ? atoi(buf)
-			    : 0);
-    driver_system_info(&sys_info, sizeof(ErlDrvSysInfo));
-
-    /* run initiation of efile_driver if needed */
-    efile_init();
-
-#ifdef  USE_VM_PROBES
-    erts_mtx_init(&dt_driver_mutex, "efile_drv dtrace mutex", NIL,
-        ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_IO);
-    pthread_key_create(&dt_driver_key, NULL);
-#endif  /* USE_VM_PROBES */
-
-    return 0;
-}
-
-
-/*********************************************************************
- * Driver entry point -> start
- */
-static ErlDrvData 
-file_start(ErlDrvPort port, char* command) 
-
-{
-    file_descriptor* desc;
-
-    if ((desc = (file_descriptor*) EF_ALLOC(sizeof(file_descriptor)))
-	== NULL) {
-	errno = ENOMEM;
-	return ERL_DRV_ERROR_ERRNO;
-    }
-    desc->fd = FILE_FD_INVALID;
-    desc->port = port;
-    desc->key = driver_async_port_key(port);
-    desc->flags = 0;
-    desc->invoke = NULL;
-    desc->d = NULL;
-    desc->free = NULL;
-    desc->cq_head = NULL;
-    desc->cq_tail = NULL;
-    desc->timer_state = timer_idle;
-#ifdef HAVE_SENDFILE
-    desc->sendfile_state = not_sending;
-#endif
-    desc->read_bufsize = 0;
-    desc->read_binp = NULL;
-    desc->read_offset = 0;
-    desc->read_size = 0;
-    desc->write_delay = 0L;
-    desc->write_bufsize = 0;
-    desc->write_error = 0;
-    MUTEX_INIT(desc->q_mtx, port); /* Refc is one, referenced by emulator now */
-    desc->write_buffered = 0;
-#ifdef  USE_VM_PROBES
-    dtrace_drvport_str(port, desc->port_str);
-    get_dt_private(0);           /* throw away return value */
-#endif  /* USE_VM_PROBES */
-    return (ErlDrvData) desc;
-}
-
-static void do_close(int flags, SWord fd) {
-    if (flags & EFILE_COMPRESSED) {
-	erts_gzclose((ErtsGzFile)(fd));
-    } else {
-	efile_closefile((int) fd);
-    }
-}
-
-static void invoke_close(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    DTRACE_INVOKE_SETUP(FILE_CLOSE);
-    d->again = 0;
-    do_close(d->flags, d->fd);
-    DTRACE_INVOKE_RETURN(FILE_CLOSE);
-}
-
-static void free_data(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-
-    switch (d->command) {
-    case FILE_OPEN:
-        if (d->is_fd_unused && d->fd != FILE_FD_INVALID) {
-            /* This is OK to do in scheduler thread because there can be no async op
-               ongoing for this fd here, as we exited during async open.
-               Ideally, this close should happen in an async thread too, but that would
-               require a substantial rewrite, as we are here because of a dead port and
-               cannot schedule async jobs for that port any more... */
-            do_close(d->flags, d->fd);
-        }
-        break;
-    case FILE_CLOSE_ON_PORT_EXIT:
-        EF_FREE(d->data_to_free);
-        break;
-    }
-
-    EF_FREE(data);
-}
-
-
-/*
- * Sends back an error reply to Erlang.
- */
-
-static void reply_posix_error(file_descriptor *desc, int posix_errno) {
-    char response[256];		/* Response buffer. */
-    char* s;
-    char* t;
-    
-    /*
-     * Contents of buffer sent back:
-     *
-     * +-----------------------------------------+
-     * | FILE_RESP_ERROR | Posix error id string |
-     * +-----------------------------------------+
-     */
-
-    TRACE_C('E');
-
-    response[0] = FILE_RESP_ERROR;
-    for (s = erl_errno_id(posix_errno), t = response+1; *s; s++, t++)
-	*t = tolower(*s);
-    driver_output2(desc->port, response, t-response, NULL, 0);
-}
-
-static void reply_Uint_posix_error(file_descriptor *desc, Uint num, 
-				   int posix_errno) {
-    char response[256];		/* Response buffer. */
-    char* s;
-    char* t;
-    
-    /*
-     * Contents of buffer sent back:
-     *
-     * +----------------------------------------------------------------------+
-     * | FILE_RESP_NUMERR | 64-bit number (big-endian) | Posix error id string |
-     * +----------------------------------------------------------------------+
-     */
-
-    TRACE_C('N');
-
-    response[0] = FILE_RESP_NUMERR;
-#if SIZEOF_VOID_P == 4
-    put_int32(0, response+1);
-#else
-    put_int32(num>>32, response+1);
-#endif
-    put_int32((Uint32)num, response+1+4);
-    for (s = erl_errno_id(posix_errno), t = response+1+4+4; *s; s++, t++)
-	*t = tolower(*s);
-    driver_output2(desc->port, response, t-response, NULL, 0);
-}
-
-#ifdef HAVE_SENDFILE
-static void reply_string_error(file_descriptor *desc, char* str) {
-    char response[256];		/* Response buffer. */
-    char* s;
-    char* t;
-
-    response[0] = FILE_RESP_ERROR;
-    for (s = str, t = response+1; *s; s++, t++)
-	*t = tolower(*s);
-    driver_output2(desc->port, response, t-response, NULL, 0);
-}
-#endif
-
-static int reply_error(file_descriptor *desc, 
-		       Efile_error *errInfo) /* The error codes. */
-{
-    reply_posix_error(desc, errInfo->posix_errno);
-    return 0;
-}
-
-static int reply_Uint_error(file_descriptor *desc, Uint num, 
-			    Efile_error *errInfo) /* The error codes. */
-{
-    reply_Uint_posix_error(desc, num, errInfo->posix_errno);
-    return 0;
-}
-
-static int reply_ok(file_descriptor *desc) {
-    char c = FILE_RESP_OK;
-
-    driver_output2(desc->port, &c, 1, NULL, 0);
-    return 0;
-}
-
-static int reply(file_descriptor *desc, int ok, Efile_error *errInfo) {
-    if (!ok) {
-	reply_error(desc, errInfo);
-    } else {
-	TRACE_C('K');
-	reply_ok(desc);
-    }
-    return 0;
-}
-
-static int reply_Uint(file_descriptor *desc, Uint result) {
-    char tmp[1+4+4];
-
-    /*
-     * Contents of buffer sent back:
-     *
-     * +-----------------------------------------------+
-     * | FILE_RESP_NUMBER | 64-bit number (big-endian) |
-     * +-----------------------------------------------+
-     */
-
-    TRACE_C('R');
-
-    tmp[0] = FILE_RESP_NUMBER;
-#if SIZEOF_VOID_P == 4
-    put_int32(0, tmp+1);
-#else
-    put_int32(result>>32, tmp+1);
-#endif
-    put_int32((Uint32)result, tmp+1+4);
-    driver_output2(desc->port, tmp, sizeof(tmp), NULL, 0);
-    return 0;
-}
-
-static int reply_Sint64(file_descriptor *desc, Sint64 result) {
-    char tmp[1+4+4];
-
-    /*
-     * Contents of buffer sent back:
-     *
-     * +-----------------------------------------------+
-     * | FILE_RESP_NUMBER | 64-bit number (big-endian) |
-     * +-----------------------------------------------+
-     */
-
-    TRACE_C('R');
-
-    tmp[0] = FILE_RESP_NUMBER;
-    put_int64(result, tmp+1);
-    driver_output2(desc->port, tmp, sizeof(tmp), NULL, 0);
-    return 0;
-}
-
-#if 0
-static void reply_again(file_descriptor *desc) {
-    char tmp[1];
-    tmp[0] = FILE_RESP_AGAIN;
-    driver_output2(desc->port, tmp, sizeof(tmp), NULL, 0);
-}
-#endif
-
-static void reply_ev(file_descriptor *desc, char response, ErlIOVec *ev) {
-    char tmp[1];
-    /* Data arriving at the Erlang process:
-     * [Response, Binary0, Binary1, .... | BinaryN-1]
-     */
-    tmp[0] = response;
-    driver_outputv(desc->port, tmp, sizeof(tmp), ev, 0);
-}
-
-static void reply_data(file_descriptor *desc, 
-		       ErlDrvBinary *binp, size_t offset, size_t len) {
-    char header[1+4+4];
-    /* Data arriving at the Erlang process:
-     * [?FILE_RESP_DATA, 64-bit length (big-endian) | Data]
-     */
-    header[0] = FILE_RESP_DATA;
-#if SIZEOF_SIZE_T == 4
-    put_int32(0, header+1);
-#else
-    put_int32(len>>32, header+1);
-#endif
-    put_int32((Uint32)len, header+1+4);
-    driver_output_binary(desc->port, header, sizeof(header),
-			 binp, offset, len);
-}
-
-static void reply_buf(file_descriptor *desc, char *buf, size_t len) {
-    char header[1+4+4];
-    /* Data arriving at the Erlang process:
-     * [?FILE_RESP_DATA, 64-bit length (big-endian) | Data]
-     */
-    header[0] = FILE_RESP_DATA;
-#if SIZEOF_SIZE_T == 4
-    put_int32(0, header+1);
-#else
-    put_int32(len>>32, header+1);
-#endif
-    put_int32((Uint32)len, header+1+4);
-    driver_output2(desc->port, header, sizeof(header), buf, len);
-}
-
-static int reply_eof(file_descriptor *desc) {
-    char c = FILE_RESP_EOF;
-
-    driver_output2(desc->port, &c, 1, NULL, 0);
-    return 0;
-}
- 
-static void invoke_name(void *data, int (*f)(Efile_error *, char *))
-{
-    struct t_data *d = (struct t_data *) data;
-    char *name = (char *) d->b;
-
-    d->again = 0;
-    d->result_ok = (*f)(&d->errInfo, name);
-}
-
-static void invoke_mkdir(void *data)
-{
-    DTRACE_INVOKE_SETUP_BY_NAME(FILE_MKDIR);
-    invoke_name(data, efile_mkdir);
-    DTRACE_INVOKE_RETURN(FILE_MKDIR);
-}
-
-static void invoke_rmdir(void *data)
-{
-    DTRACE_INVOKE_SETUP_BY_NAME(FILE_RMDIR);
-    invoke_name(data, efile_rmdir);
-    DTRACE_INVOKE_RETURN(FILE_RMDIR);
-}
-
-static void invoke_delete_file(void *data)
-{
-    DTRACE_INVOKE_SETUP_BY_NAME(FILE_DELETE);
-    invoke_name(data, efile_delete_file);
-    DTRACE_INVOKE_RETURN(FILE_DELETE);
-}
-
-static void invoke_chdir(void *data)
-{
-    DTRACE_INVOKE_SETUP_BY_NAME(FILE_CHDIR);
-    invoke_name(data, efile_chdir);
-    DTRACE_INVOKE_RETURN(FILE_CHDIR);
-}
-
-static void invoke_fdatasync(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    int fd = (int) d->fd;
-    DTRACE_INVOKE_SETUP(FILE_FDATASYNC);
-
-    d->again = 0;
-    d->result_ok = efile_fdatasync(&d->errInfo, fd);
-    DTRACE_INVOKE_RETURN(FILE_FDATASYNC);
-}
-
-static void invoke_fsync(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    int fd = (int) d->fd;
-    DTRACE_INVOKE_SETUP(FILE_FSYNC);
-
-    d->again = 0;
-    d->result_ok = efile_fsync(&d->errInfo, fd);
-    DTRACE_INVOKE_RETURN(FILE_FSYNC);
-}
-
-static void invoke_truncate(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    int fd = (int) d->fd;
-    DTRACE_INVOKE_SETUP(FILE_TRUNCATE);
-
-    d->again = 0;
-    d->result_ok = efile_truncate_file(&d->errInfo, &fd, d->flags);
-    DTRACE_INVOKE_RETURN(FILE_TRUNCATE);
-}
-
-static void invoke_read(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    int status, segment;
-    size_t size, read_size;
-    DTRACE_INVOKE_SETUP(FILE_READ);
-
-    segment = d->again && d->c.read.bin_size >= 2*FILE_SEGMENT_READ;
-    if (segment) {
-	size = FILE_SEGMENT_READ;
-    } else {
-	size = d->c.read.bin_size;
-    }
-    read_size = size;
-    if (d->flags & EFILE_COMPRESSED) {
-	read_size = erts_gzread((ErtsGzFile)d->fd,
-				d->c.read.binp->orig_bytes + d->c.read.bin_offset,
-				size);
-	status = (read_size != (size_t) -1);
-	if (!status) {
-	    d->errInfo.posix_errno = EIO;
-	}
-    } else {
-	status = efile_read(&d->errInfo, d->flags, (int) d->fd,
-			    d->c.read.binp->orig_bytes + d->c.read.bin_offset,
-			    size,
-			    &read_size);
-    }
-    if ( (d->result_ok = status)) {
-	ASSERT(read_size <= size);
-	d->c.read.bin_offset += read_size;
-	if (read_size < size || !segment) {
-	    d->c.read.bin_size = 0;
-	    d->again = 0;
-	} else {
-	    d->c.read.bin_size -= read_size;
-	}
-    } else {
-	d->again = 0;
-    }
-    DTRACE_INVOKE_RETURN(FILE_READ);
-}
-
-static void free_read(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-
-    driver_free_binary(d->c.read.binp);
-    EF_FREE(d);
-}
-
-static void invoke_read_line(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    int status;
-    size_t read_size = 0;
-    int local_loop = (d->again == 0);
-    DTRACE_INVOKE_SETUP(FILE_READ_LINE);
-
-    do {
-	size_t size = (d->c.read_line.binp)->orig_size - 
-	    d->c.read_line.read_offset - d->c.read_line.read_size;
-	if (size == 0) {
-	    /* Need more place */
-	    ErlDrvSizeT need = (d->c.read_line.read_size >= DEFAULT_LINEBUF_SIZE) ?
-		d->c.read_line.read_size + DEFAULT_LINEBUF_SIZE : DEFAULT_LINEBUF_SIZE;
-	    ErlDrvBinary   *newbin;
-#if !ALWAYS_READ_LINE_AHEAD
-	    /* Use read_ahead size if need does not exceed it */
-	    if (need < (d->c.read_line.binp)->orig_size && 
-		d->c.read_line.read_ahead)
-	      need = (d->c.read_line.binp)->orig_size;
-#endif
-	    newbin = driver_alloc_binary(need);
-	    if (newbin == NULL) {
-		d->result_ok = 0;
-		d->errInfo.posix_errno = ENOMEM;
-		d->again = 0;
-		break;
-	    }
-	    memcpy(newbin->orig_bytes, (d->c.read_line.binp)->orig_bytes + d->c.read_line.read_offset,  
-		   d->c.read_line.read_size);
-	    driver_free_binary(d->c.read_line.binp);
-	    d->c.read_line.binp = newbin;
-	    d->c.read_line.read_offset = 0;
-	    size = need - d->c.read_line.read_size;
-	}
-	if (d->flags & EFILE_COMPRESSED) {
-	    read_size = erts_gzread((ErtsGzFile)d->fd,
-				    d->c.read_line.binp->orig_bytes + 
-				    d->c.read_line.read_offset + d->c.read_line.read_size,
-				    size);
-	    status = (read_size != (size_t) -1);
-	    if (!status) {
-		d->errInfo.posix_errno = EIO;
-	    }
-	} else {
-	    status = efile_read(&d->errInfo, d->flags, (int) d->fd,
-				d->c.read_line.binp->orig_bytes + 
-				d->c.read_line.read_offset + d->c.read_line.read_size,
-				size,
-				&read_size);
-	}
-	if ( (d->result_ok = status)) {
-	    void *nl_ptr = memchr((d->c.read_line.binp)->orig_bytes + 
-				  d->c.read_line.read_offset + d->c.read_line.read_size,'\n',read_size);
-	    ASSERT(read_size <= size);
-	    d->c.read_line.read_size += read_size;
-	    if (nl_ptr != NULL) {
-		/* If found, we're done */
-		d->c.read_line.nl_pos = ((char *) nl_ptr) - 
-		    ((char *) ((d->c.read_line.binp)->orig_bytes)) + 1;
-		if (d->c.read_line.nl_pos > 1 &&
-		    *(((char *) nl_ptr) - 1) == '\r') {
-		    --d->c.read_line.nl_pos;
-		    *(((char *) nl_ptr) - 1) = '\n';
-		    d->c.read_line.nl_skip = 1;
-		} else {
-		    d->c.read_line.nl_skip = 0;
-		}
-		d->again = 0;
-#if !ALWAYS_READ_LINE_AHEAD
-		if (!(d->c.read_line.read_ahead)) {
-		    /* Ouch! Undo buffering... */
-		    size_t too_much = d->c.read_line.read_size - d->c.read_line.nl_skip - 
-			(d->c.read_line.nl_pos - d->c.read_line.read_offset);
-		    d->c.read_line.read_size -= too_much;
-		    ASSERT(d->c.read_line.read_size >= 0);
-		    if (d->flags & EFILE_COMPRESSED) {
-			Sint64 location = erts_gzseek((ErtsGzFile)d->fd,
-						      -((Sint64) too_much), EFILE_SEEK_CUR);
-			if (location == -1) {
-			    d->result_ok = 0;
-			    d->errInfo.posix_errno = errno;
-			}
-		    } else {
-			Sint64 location;
-			d->result_ok = efile_seek(&d->errInfo, (int) d->fd, 
-						-((Sint64) too_much), EFILE_SEEK_CUR,
-						&location);
-		    }
-		}
-#endif
-		break;
-	    } else if (read_size == 0) {
-		d->c.read_line.nl_pos = 
-		    d->c.read_line.read_offset + d->c.read_line.read_size;
-		d->c.read_line.nl_skip = 0;
-		d->again = 0;
-		break;
-	    }
-	} else {
-	    d->again = 0;
-	    break;
-	}
-    } while (local_loop);
-    DTRACE_INVOKE_RETURN(FILE_READ_LINE);
-}
-
-static void free_read_line(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-
-    driver_free_binary(d->c.read_line.binp);
-    EF_FREE(d);
-}
-
-void read_file_zero_size(struct t_data* d);
-#define ZERO_FILE_CHUNK (64 * 1024)
-
-/* [ERL-327] Some special files like /proc/... have reported size 0 */
-void read_file_zero_size(struct t_data* d) {
-    size_t total_read_size = 0;
-    size_t allocated_size = ZERO_FILE_CHUNK; /* allocd in invoke_read_file */
-    for (;;) {
-        size_t read_result;
-
-        /* Read until we hit EOF (read less than FILE_SEGMENT_READ) */
-        d->result_ok = efile_read(&d->errInfo,
-                                  EFILE_MODE_READ,
-                                  (int) d->fd,
-                                  (d->c.read_file.binp->orig_bytes +
-                                   total_read_size),
-                                  ZERO_FILE_CHUNK,
-                                  &read_result);
-        if (!d->result_ok) {
-            break;
-        }
-
-        total_read_size += read_result;
-        d->c.read_file.offset += read_result;
-        if (read_result < ZERO_FILE_CHUNK) {
-            break;
-        }
-
-        /* Grow before the next read call */
-        allocated_size = total_read_size + ZERO_FILE_CHUNK;
-        d->c.read_file.binp = driver_realloc_binary(d->c.read_file.binp,
-                                                    allocated_size);
-    }
-
-    /* Finalize the memory usage. Hopefully it was read fully on the first
-     * go, so the binary allocation overhead becomes:
-     * alloc ZERO_FILE_CHUNK (64kb) -> realloc real_size */
-    if (allocated_size != total_read_size) {
-        d->c.read_file.binp = driver_realloc_binary(d->c.read_file.binp,
-                                                    total_read_size);
-    }
-    d->again = 0;
-}
-
-static void invoke_read_file(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    size_t read_size;
-    int chop;
-    DTRACE_INVOKE_SETUP(FILE_READ_FILE);
-    
-    if (! d->c.read_file.binp) { /* First invocation only */
-	int fd;
-	Sint64 size;
-	
-	if (! (d->result_ok = 
-	       efile_openfile(&d->errInfo, d->b, 
-			      EFILE_MODE_READ, &fd, &size))) {
-	    goto done;
-	}
-	d->fd = fd;
-	d->c.read_file.size = (int) size;
-
-        /* For zero sized files allocate a reasonable chunk to attempt reading
-         * anyway. Note: This will eat ZERO_FILE_CHUNK bytes for any 0 file
-         * and free them immediately after (if the file was empty). */
-        ERTS_ASSERT(size >= 0);
-        d->c.read_file.binp = driver_alloc_binary(size != 0 ? (size_t)size
-                                                            : ZERO_FILE_CHUNK);
-
-	if (size < 0 || size != d->c.read_file.size || !d->c.read_file.binp) {
-	    d->result_ok = 0;
-	    d->errInfo.posix_errno = ENOMEM;
-	    goto close;
-	}
-	d->c.read_file.offset = 0;
-    }
-    /* Invariant: d->c.read_file.size >= d->c.read_file.offset */
-    
-    if (d->c.read_file.size == 0) {
-        read_file_zero_size(d);
-        goto close;
-    }
-
-    read_size = (size_t) (d->c.read_file.size - d->c.read_file.offset);
-    if (! read_size) goto close;
-    chop = d->again && read_size >= FILE_SEGMENT_READ*2;
-    if (chop) read_size = FILE_SEGMENT_READ;
-    d->result_ok = 
-	efile_read(&d->errInfo, 
-		   EFILE_MODE_READ, 
-		   (int) d->fd, 
-		   d->c.read_file.binp->orig_bytes + d->c.read_file.offset,
-		   read_size, 
-		   &read_size);
-    if (d->result_ok) {
-	d->c.read_file.offset += read_size;
-	if (chop) goto chop_done; /* again */
-    }
- close:
-    efile_closefile((int) d->fd);
- done:
-    d->again = 0;
- chop_done:
-    DTRACE_INVOKE_RETURN(FILE_READ_FILE);
-}
-
-static void free_read_file(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-
-    if (d->c.read_file.binp) driver_free_binary(d->c.read_file.binp);
-    EF_FREE(d);
-}
-
-
-
-static void invoke_preadv(void *data)
-{
-    struct t_data   *d = (struct t_data *) data;
-    struct t_preadv *c = &d->c.preadv;
-    ErlIOVec        *ev = &c->eiov;
-    size_t           bytes_read_so_far = 0;
-    unsigned char   *p = (unsigned char *)ev->iov[0].iov_base + 4+4+8*c->cnt;
-    DTRACE_INVOKE_SETUP(FILE_PREADV);
-
-    while (c->cnt < c->n) {
-	size_t read_size = ev->iov[1 + c->cnt].iov_len - c->size;
-	size_t bytes_read = 0;
-	int chop = d->again 
-	    && bytes_read_so_far + read_size >= 2*FILE_SEGMENT_READ;
-	if (chop) {
-	    ASSERT(bytes_read_so_far < FILE_SEGMENT_READ);
-	    read_size = FILE_SEGMENT_READ + FILE_SEGMENT_READ/2
-		- bytes_read_so_far;
-	}
-	if ( (d->result_ok 
-	      = efile_pread(&d->errInfo, 
-			    (int) d->fd,
-			    c->offsets[c->cnt] + c->size,
-			    ((char *)ev->iov[1 + c->cnt].iov_base) + c->size,
-			    read_size,
-			    &bytes_read))) {
-	    bytes_read_so_far += bytes_read;
-	    if (chop && bytes_read == read_size) {
-		c->size += bytes_read;
-		goto done;
-	    }
-	    ASSERT(bytes_read <= read_size);
-	    ev->iov[1 + c->cnt].iov_len = bytes_read + c->size;
-	    ev->size += bytes_read + c->size;
-	    put_int64(bytes_read + c->size, p); p += 8;
-	    c->size = 0;
-	    c->cnt++;
-	    if (d->again 
-		&& bytes_read_so_far >= FILE_SEGMENT_READ
-		&& c->cnt < c->n) {
-		goto done;
-	    }
-	} else {
-	    /* In case of a read error, ev->size will not be correct,
-	     * which does not matter since no read data is returned
-	     * to Erlang.
-	     */
-	    break;
-	}
-    }					
-    d->again = 0;
- done:
-    DTRACE_INVOKE_RETURN(FILE_PREADV);
-}
-
-static void free_preadv(void *data) {
-    struct t_data *d = data;
-    int            i;
-    ErlIOVec      *ev = &d->c.preadv.eiov;
-    
-    for(i = 0; i < ev->vsize; i++) {
-	driver_free_binary(ev->binv[i]);
-    }
-    EF_FREE(d);
-}
-
-static void invoke_ipread(void *data)
-{
-    struct t_data   *d = data;
-    struct t_preadv *c = &d->c.preadv;
-    ErlIOVec        *ev = &c->eiov;
-    size_t bytes_read = 0;
-    char buf[2*sizeof(Uint32)];
-    Uint32 offset, size;
-    DTRACE_INVOKE_SETUP(FILE_IPREAD);
-    
-    /* Read indirection header */
-    if (! efile_pread(&d->errInfo, (int) d->fd, c->offsets[0], 
-		      buf, sizeof(buf), &bytes_read)) {
-	goto error;
-    }
-    if (bytes_read != sizeof(buf)) goto done; /* eof */
-    size = get_int32(buf);
-    offset = get_int32(buf+4);
-    if (size > c->size) goto done; /* eof */
-    c->n = 1;
-    c->cnt = 0;
-    c->size = 0;
-    c->offsets[0] = offset;
-    if (! (ev->binv[0] = driver_alloc_binary(3*8))) {
-	d->errInfo.posix_errno = ENOMEM;
-	goto error;
-    }
-    ev->vsize = 1;
-    ev->iov[0].iov_len = 3*8;
-    ev->iov[0].iov_base = ev->binv[0]->orig_bytes;
-    ev->size = ev->iov[0].iov_len;
-    put_int64(offset, ev->iov[0].iov_base);
-    put_int64(size, ((char *)ev->iov[0].iov_base) + 2*8);
-    if (size == 0) {
-	put_int64(size, ((char *)ev->iov[0].iov_base) + 8);
-	goto done;
-    }
-    if (! (ev->binv[1] = driver_alloc_binary(size))) {
-	d->errInfo.posix_errno = ENOMEM;
-	goto error;
-    }
-    ev->vsize = 2;
-    ev->iov[1].iov_len = size;
-    ev->iov[1].iov_base = ev->binv[1]->orig_bytes;
-    /* Read data block */
-    d->invoke = invoke_preadv;
-    invoke_preadv(data);
-    DTRACE_INVOKE_RETURN(FILE_IPREAD);
-    return;
- error:
-    d->result_ok = 0;
-    d->again = 0;
-    DTRACE_INVOKE_RETURN(FILE_IPREAD);
-    return;
- done:
-    d->result_ok = !0;
-    d->again = 0;
-    DTRACE_INVOKE_RETURN(FILE_IPREAD);
-}
-
-/* invoke_writev and invoke_pwritev are the only thread functions that
- * access non-thread data i.e the port queue and a mutex in the port
- * structure that is used to lock the port queue.
- *
- * The port will normally not be terminated until the port queue is
- * empty, but if the port is killed, i.e., exit(Port, kill) is called,
- * it will terminate regardless of the port queue state. When the
- * port is invalid driver_peekq() returns NULL and set the size to -1,
- * and driver_sizeq() returns -1.
- */
-
-static void invoke_writev(void *data) {
-    struct t_data *d = (struct t_data *) data;
-    SysIOVec      *iov0;
-    SysIOVec      *iov;
-    int            iovlen;
-    int            iovcnt;
-    size_t         size;
-    size_t         p;
-    int            segment;
-    DTRACE_INVOKE_SETUP(FILE_WRITE);
-
-    segment = d->again && d->c.writev.size >= 2*FILE_SEGMENT_WRITE;
-    if (segment) {
-	size = FILE_SEGMENT_WRITE;
-    } else {
-	size = d->c.writev.size;
-    }
-
-    /* Copy the io vector to avoid locking the port que while writing,
-     * also, both we and efile_writev might/will change the SysIOVec
-     * when segmenting or due to partial write and we do not want to
-     * tamper with the actual queue that we get from driver_peekq
-     */
-    MUTEX_LOCK(d->c.writev.q_mtx); /* Lock before accessing the port queue */
-    iov0 = driver_peekq(d->c.writev.port, &iovlen);
-
-    /* Calculate iovcnt */
-    for (p = 0, iovcnt = 0;
-	 p < size && iovcnt < iovlen;
-	 p += iov0[iovcnt++].iov_len)
-	;
-    iov = EF_SAFE_ALLOC(sizeof(SysIOVec)*iovcnt);
-    memcpy(iov,iov0,iovcnt*sizeof(SysIOVec));
-    MUTEX_UNLOCK(d->c.writev.q_mtx);
-    /* Let go of lock until we deque from original vector */
-
-    if (iovlen > 0) {
-	ASSERT(iov[iovcnt-1].iov_len > p - size);
-	iov[iovcnt-1].iov_len -= p - size;
-	if (d->flags & EFILE_COMPRESSED) {
-	    int i, status = 1;
-	    for (i = 0; i < iovcnt; i++) {
-		if (iov[i].iov_base && iov[i].iov_len > 0) {
-		    /* Just in case, I do not know what gzwrite does
-		     * with errno.
-		     */
-		    errno = EINVAL; 
-		    status = erts_gzwrite((ErtsGzFile)d->fd,
-					  iov[i].iov_base,
-					  iov[i].iov_len) == iov[i].iov_len;
-		    if (! status) {
-			d->errInfo.posix_errno =
-			    d->errInfo.os_errno = errno; /* XXX Correct? */
-			break;
-		    }
-		}
-	    }
-	    d->result_ok = status;
-	} else {
-	    d->result_ok = efile_writev(&d->errInfo, 
-					d->flags, (int) d->fd,
-					iov, iovcnt);
-	}
-    } else if (iovlen == 0) {
-	d->result_ok = 1;
-    }
-    else { /* Port has terminated */
-	d->result_ok = 0;
-	d->errInfo.posix_errno = d->errInfo.os_errno = EINVAL;
-    }
-    EF_FREE(iov);
-
-    if (! d->result_ok) {
-	d->again = 0;
-	MUTEX_LOCK(d->c.writev.q_mtx);
-	driver_deq(d->c.writev.port, d->c.writev.size);
-	MUTEX_UNLOCK(d->c.writev.q_mtx);
-    } else {
-	if (! segment) {
-	    d->again = 0;
-	}
-	d->c.writev.size -= size;
-	TRACE_F(("w%lu", (unsigned long)size));
-	MUTEX_LOCK(d->c.writev.q_mtx);
-	driver_deq(d->c.writev.port, size);
-	MUTEX_UNLOCK(d->c.writev.q_mtx);
-    }
-
-
-    DTRACE_INVOKE_RETURN(FILE_WRITE);
-}
-
-static void invoke_pwd(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    DTRACE_INVOKE_SETUP(FILE_PWD);
-
-    d->again = 0;
-    d->result_ok = efile_getdcwd(&d->errInfo,d->drive, d->b+1,
-				 RESBUFSIZE-1);
-    DTRACE_INVOKE_RETURN(FILE_PWD);
-}
-
-static void invoke_readlink(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    char resbuf[RESBUFSIZE];	/* Result buffer. */
-    DTRACE_INVOKE_SETUP(FILE_READLINK);
-
-    d->again = 0;
-    d->result_ok = efile_readlink(&d->errInfo, d->b, resbuf+1,
-				  RESBUFSIZE-1);
-    if (d->result_ok != 0)
-	FILENAME_COPY((char *) d->b + 1, resbuf+1);
-    DTRACE_INVOKE_RETURN(FILE_READLINK);
-}
-
-static void invoke_altname(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    char resbuf[RESBUFSIZE];	/* Result buffer. */
-    DTRACE_INVOKE_SETUP(FILE_ALTNAME);
-
-    d->again = 0;
-    d->result_ok = efile_altname(&d->errInfo, d->b, resbuf+1,
-				  RESBUFSIZE-1);
-    if (d->result_ok != 0)
-	FILENAME_COPY((char *) d->b + 1, resbuf+1);
-    DTRACE_INVOKE_RETURN(FILE_ALTNAME);
-}
-
-static void invoke_pwritev(void *data) {
-    struct t_data* const d = (struct t_data *) data;
-    struct t_pwritev * const c = &d->c.pwritev;
-    SysIOVec         *iov0;
-    SysIOVec         *iov;
-    int               iovlen;
-    int               iovcnt;
-    size_t            p;
-    int               segment;
-    size_t            size, write_size, written;
-    DTRACE_INVOKE_SETUP(FILE_PWRITEV);
-
-    segment = d->again && c->size >= 2*FILE_SEGMENT_WRITE;
-    if (segment) {
-	size = FILE_SEGMENT_WRITE;
-    } else {
-	size = c->size;
-    }
-    d->result_ok = !0;
-    p = 0;
-    /* Lock the queue just for a while, we don't want it locked during write */
-    MUTEX_LOCK(c->q_mtx);
-    iov0 = driver_peekq(c->port, &iovlen);
-    iov = EF_SAFE_ALLOC(sizeof(SysIOVec)*iovlen);
-    memcpy(iov,iov0,sizeof(SysIOVec)*iovlen);
-    MUTEX_UNLOCK(c->q_mtx);
-
-    if (iovlen < 0)
-	goto error; /* Port terminated */
-    for (iovcnt = 0, written = 0;
-	 c->cnt < c->n && iovcnt < iovlen && written < size;
-	 c->cnt++) {
-	int chop;
-	write_size = c->specs[c->cnt].size;
-	if (iov[iovcnt].iov_len - p < write_size) {
-	    goto error;
-	}
-	chop = segment && written + write_size >= 2*FILE_SEGMENT_WRITE;
-	if (chop) {
-	    ASSERT(written < FILE_SEGMENT_WRITE);
-	    write_size = FILE_SEGMENT_WRITE + FILE_SEGMENT_WRITE/2 
-		- written;
-	}
-	d->result_ok = efile_pwrite(&d->errInfo, (int) d->fd,
-				    (char *)(iov[iovcnt].iov_base) + p,
-				    write_size,
-				    c->specs[c->cnt].offset);
-	if (! d->result_ok) {
-	    d->again = 0;
-	    goto deq_error;
-	}
-	written += write_size; 
-	c->size -= write_size;
-	if (chop) { 
-	    c->specs[c->cnt].offset += write_size;
-	    c->specs[c->cnt].size -= write_size;
-	    /* Schedule out (d->again != 0) */
-	    break;
-	}
-	/* Move forward in buffer */
-	p += write_size;
-	ASSERT(iov[iovcnt].iov_len >= p);
-	if (iov[iovcnt].iov_len == p) {
-	    /* Move to next iov[], we trust that it is not a 
-	     * zero length vector, and thereby depend on that
-	     * such are not queued.
-	     */
-	    iovcnt++; p = 0;
-	}
-    }
-    if (! segment) {
-	if (c->cnt != c->n) {
-	    /* Mismatch between number of 
-	     * pos/size specs vs number of queued buffers .
-	     */
-	error:
-	    d->errInfo.posix_errno = EINVAL;
-	    d->result_ok = 0;
-	    d->again = 0;
-	deq_error:
-	    MUTEX_LOCK(c->q_mtx);
-	    driver_deq(c->port, c->size);
-	    MUTEX_UNLOCK(c->q_mtx);
-
-	    goto done;
-	} else {
-	    ASSERT(written == size);
-	    d->again = 0;
-	}
-    } else {
-      ASSERT(written >= FILE_SEGMENT_WRITE);
-    }
-      
-    MUTEX_LOCK(c->q_mtx);
-    driver_deq(c->port, written);
-    MUTEX_UNLOCK(c->q_mtx);
- done:
-    EF_FREE(iov); /* Free our copy of the vector, nothing to restore */
-    
-    DTRACE_INVOKE_RETURN(FILE_PWRITEV);
-}
-
-static void invoke_flstat(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-
-    DTRACE3(efile_drv_int_entry, d->sched_i1, d->sched_i2,
-            d->command == FILE_LSTAT ? FILE_LSTAT : FILE_FSTAT);
-    d->again = 0;
-    d->result_ok = efile_fileinfo(&d->errInfo, &d->info,
-				  d->b, d->command == FILE_LSTAT);
-    DTRACE3(efile_drv_int_entry, d->sched_i1, d->sched_i2,
-            d->command == FILE_LSTAT ? FILE_LSTAT : FILE_FSTAT);
-    gcc_optimizer_hack++;
-}
-
-static void invoke_link(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    char *name = d->b;
-    char *new_name;
-    DTRACE_INVOKE_SETUP(FILE_LINK);
-
-    d->again = 0;
-    new_name = name+FILENAME_BYTELEN(name)+FILENAME_CHARSIZE;
-    d->result_ok = efile_link(&d->errInfo, name, new_name);
-    DTRACE_INVOKE_RETURN(FILE_LINK);
-}
-
-static void invoke_symlink(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    char *name = d->b;
-    char *new_name;
-    DTRACE_INVOKE_SETUP(FILE_SYMLINK);
-
-    d->again = 0;
-    new_name = name+FILENAME_BYTELEN(name)+FILENAME_CHARSIZE;
-    d->result_ok = efile_symlink(&d->errInfo, name, new_name);
-    DTRACE_INVOKE_RETURN(FILE_SYMLINK);
-}
-
-static void invoke_rename(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    char *name = d->b;
-    char *new_name;
-    DTRACE_INVOKE_SETUP(FILE_RENAME);
-
-    d->again = 0;
-    new_name = name+FILENAME_BYTELEN(name)+FILENAME_CHARSIZE;
-    d->result_ok = efile_rename(&d->errInfo, name, new_name);
-    DTRACE_INVOKE_RETURN(FILE_RENAME);
-}
-
-static void invoke_write_info(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    DTRACE_INVOKE_SETUP(FILE_WRITE_INFO);
-
-    d->again = 0;
-    d->result_ok = efile_write_info(&d->errInfo, &d->info, d->b);
-    DTRACE_INVOKE_RETURN(FILE_WRITE_INFO);
-}
-
-static void invoke_lseek(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    int status;
-    DTRACE_INVOKE_SETUP(FILE_LSEEK);
-
-    d->again = 0;
-    if (d->flags & EFILE_COMPRESSED) {
-	int offset = (int) d->c.lseek.offset;
-	
-	if (offset != d->c.lseek.offset) {
-	    d->errInfo.posix_errno = EINVAL;
-	    status = 0;
-	} else {
-	    d->c.lseek.location = erts_gzseek((ErtsGzFile)d->fd,
-					      offset, d->c.lseek.origin);
-	    if (d->c.lseek.location == -1) {
-		d->errInfo.posix_errno = errno;
-		status = 0;
-	    } else {
-		status = 1;
-	    }
-	}
-    } else {
-	status = efile_seek(&d->errInfo, (int) d->fd, 
-			    d->c.lseek.offset, d->c.lseek.origin,
-			    &d->c.lseek.location);
-    }
-    d->result_ok = status;
-    DTRACE_INVOKE_RETURN(FILE_LSEEK);
-}
-
-static void invoke_readdir(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    char *p = NULL;
-    size_t file_bs;
-    size_t n = 0, total = 0;
-    struct t_readdir_buf *b = NULL;
-    int res = 0;
-    DTRACE_INVOKE_SETUP(FILE_READDIR);
-
-    d->again = 0;
-    d->errInfo.posix_errno = 0;
-
-    do {
-	total   = READDIR_BUFSIZE;
-	n       = 1;
-	b       = EF_SAFE_ALLOC(sizeof(struct t_readdir_buf));
-	b->next = NULL;
-	
-	if (d->c.read_dir.last_buf) {
-	    d->c.read_dir.last_buf->next = b;
-	} else {
-	    d->c.read_dir.first_buf = b;
-	}
-	d->c.read_dir.last_buf = b;
-
-	p       = &b->buf[0];
-	p[0]    = FILE_RESP_LFNAME;
-	file_bs = READDIR_BUFSIZE - n;
-
-	do {
-	    res = efile_readdir(&d->errInfo, d->b, &d->dir_handle, p + n + 2, &file_bs);
-
-	    if (res) {
-		put_int16((Uint16)file_bs, p + n);
-		n += 2 + file_bs;
-		file_bs = READDIR_BUFSIZE - n;
-	    }
-	} while( res && ((total - n - 2) >= MAXPATHLEN*FILENAME_CHARSIZE));
-
-	b->n = n;
-    } while(res);
-
-    d->result_ok = (d->errInfo.posix_errno == 0);
-    DTRACE_INVOKE_RETURN(FILE_READDIR);
-}
-
-static void invoke_open(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    int status = 1;		/* Status of open call. */
-    DTRACE_INVOKE_SETUP(FILE_OPEN);
-
-    d->again = 0;
-    if ((d->flags & EFILE_COMPRESSED) == 0) {
-	int fd;
-	status = efile_openfile(&d->errInfo, d->b, d->flags, &fd, NULL);
-	d->fd = fd;
-    } else {
-	char* mode = NULL;
-
-	if (((d->flags & (EFILE_MODE_READ_WRITE)) == EFILE_MODE_READ_WRITE) ||
-	    (d->flags & EFILE_MODE_APPEND)) {
-	    status = 0;
-	    d->errInfo.posix_errno = EINVAL;
-	} else {
-	    status = efile_may_openfile(&d->errInfo, d->b);
-	    if (status || (d->errInfo.posix_errno != EISDIR)) {
-		mode = (d->flags & EFILE_MODE_READ) ? "rb" : "wb";
-		d->fd = (SWord) erts_gzopen(d->b, mode);
-		if ((ErtsGzFile)d->fd) {
-		    status = 1;
-		} else {
-		    if (errno == 0) {
-			errno = ENOMEM;
-		    }
-		    d->errInfo.posix_errno = errno;
-		    status = 0;
-		}
-	    }
-	}
-    }
-
-    d->result_ok = status;
-    if (!status) {
-        d->fd = FILE_FD_INVALID;
-    }
-    DTRACE_INVOKE_RETURN(FILE_OPEN);
-}
-
-static void invoke_fadvise(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    int fd = (int) d->fd;
-    off_t offset = (off_t) d->c.fadvise.offset;
-    off_t length = (off_t) d->c.fadvise.length;
-    int advise = (int) d->c.fadvise.advise;
-    DTRACE_INVOKE_SETUP(FILE_FADVISE);
-
-    d->again = 0;
-    d->result_ok = efile_fadvise(&d->errInfo, fd, offset, length, advise);
-    DTRACE_INVOKE_RETURN(FILE_FADVISE);
-}
-
-#ifdef HAVE_SENDFILE
-static void invoke_sendfile(void *data)
-{
-    struct t_data *d = (struct t_data *)data;
-    int fd = d->fd;
-    int out_fd = (int)d->c.sendfile.out_fd;
-    Uint64 nbytes = d->c.sendfile.nbytes;
-    int result = 0;
-    d->again = 0;
-
-    result = efile_sendfile(&d->errInfo, fd, out_fd, &d->c.sendfile.offset, &nbytes, NULL);
-
-    d->c.sendfile.written += nbytes;
-
-    if (result == 1 || (result == 0 && USE_THRDS_FOR_SENDFILE(d))) {
-      d->result_ok = 0;
-    } else if (result == 0 && (d->errInfo.posix_errno == EAGAIN
-				 || d->errInfo.posix_errno == EINTR)) {
-      if ((d->c.sendfile.nbytes - nbytes) != 0) {
-	d->result_ok = 1;
-	if (d->c.sendfile.nbytes != 0)
-	  d->c.sendfile.nbytes -= nbytes;
-      } else if (nbytes == 0 && d->c.sendfile.nbytes == 0) {
-	d->result_ok = 1;
-      } else
-	d->result_ok = 0;
-    } else {
-	d->result_ok = -1;
-    }
-}
-
-static void free_sendfile(void *data) {
-    struct t_data *d = (struct t_data *)data;
-    if (USE_THRDS_FOR_SENDFILE(d)) {
-	SET_NONBLOCKING(d->c.sendfile.out_fd);
-    } else {
-	MUTEX_LOCK(d->c.sendfile.q_mtx);
-	driver_deq(d->c.sendfile.port,1);
-	MUTEX_UNLOCK(d->c.sendfile.q_mtx);
-	driver_select(d->c.sendfile.port, (ErlDrvEvent)(long)d->c.sendfile.out_fd,
-                      ERL_DRV_USE_NO_CALLBACK|ERL_DRV_WRITE, 0);
-    }
-    EF_FREE(data);
-}
-
-static void file_ready_output(ErlDrvData data, ErlDrvEvent event)
-{
-    file_descriptor* fd = (file_descriptor*) data;
-
-    switch (fd->d->command) {
-    case FILE_SENDFILE:
-	driver_select(fd->d->c.sendfile.port, event,
-		      (int)ERL_DRV_WRITE,(int) 0);
-	invoke_sendfile((void *)fd->d);
-	file_async_ready(data, (ErlDrvThreadData)fd->d);
-	break;
-    default:
-	break;
-    }
-}
-
-static void file_stop_select(ErlDrvEvent event, void* _)
-{
-
-}
-
-static int flush_sendfile(file_descriptor *desc,void *_) {
-    if (desc->sendfile_state == sending) {
-	desc->d->result_ok = -1;
-	desc->d->errInfo.posix_errno = ECONNABORTED;
-	file_async_ready((ErlDrvData)desc,(ErlDrvThreadData)desc->d);
-    }
-    return 1;
-}
-#endif /* HAVE_SENDFILE */
-
-
-static void invoke_fallocate(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    int fd = (int) d->fd;
-    Sint64 offset = d->c.fallocate.offset;
-    Sint64 length = d->c.fallocate.length;
-
-    d->again = 0;
-    d->result_ok = efile_fallocate(&d->errInfo, fd, offset, length);
-}
-
-static void free_readdir(void *data)
-{
-    struct t_data *d = (struct t_data *) data;
-    struct t_readdir_buf *b1 = d->c.read_dir.first_buf;
-
-    while (b1) {
-	struct t_readdir_buf *b2 = b1;
-	b1 = b1->next;
-	EF_FREE(b2);
-    }
-    EF_FREE(d);
-}
-
-
-
-static void try_free_read_bin(file_descriptor *desc) {
-    if ((desc->read_size == 0)
-	&& (desc->read_offset >= desc->read_binp->orig_size)) {
-	ASSERT(desc->read_offset == desc->read_binp->orig_size);
-	driver_free_binary(desc->read_binp);
-	desc->read_binp = NULL;
-	desc->read_offset = 0;
-	desc->read_size = 0;
-    }
-}
-
-
-
-static int try_again(file_descriptor *desc, struct t_data *d) {
-    if (! d->again)
-	return 0;
-    if (desc->timer_state != timer_idle) {
-	driver_cancel_timer(desc->port);
-    }
-    desc->timer_state = timer_again;
-    desc->invoke = d->invoke;
-    desc->d = d;
-    desc->free = d->free;
-    driver_set_timer(desc->port, 0L);
-    return !0;
-}
-
-
-
-static void cq_execute(file_descriptor *desc) {
-    struct t_data *d;
-    register void *void_ptr; /* Soft cast variable */
-    if (desc->timer_state == timer_again)
-	return;
-#ifdef HAVE_SENDFILE
-    if (desc->sendfile_state == sending)
-	return;
-#endif
-    if (! (d = cq_deq(desc)))
-	return;
-    TRACE_F(("x%i", (int) d->command));
-    d->again = sys_info.async_threads == 0;
-    DRIVER_ASYNC(d->level, desc, d->invoke, void_ptr=d, d->free);
-}
-
-static struct t_data *async_write(file_descriptor *desc, int *errp,
-		       int reply, Uint32 reply_size
-#ifdef USE_VM_PROBES
-		       ,Sint64 *dt_i1, Sint64 *dt_i2, Sint64 *dt_i3
-#endif
-) {
-    struct t_data *d;
-    if (! (d = EF_ALLOC(sizeof(struct t_data) - 1))) {
-	if (errp) *errp = ENOMEM;
-	return NULL;
-    }
-    TRACE_F(("w%lu", (unsigned long)desc->write_buffered));
-    d->command = FILE_WRITE;
-    d->fd = desc->fd;
-    d->flags = desc->flags;
-    d->c.writev.port = desc->port;
-    d->c.writev.q_mtx = desc->q_mtx;
-    d->c.writev.size = desc->write_buffered;
-#ifdef USE_VM_PROBES
-    if (dt_i1 != NULL) {
-        *dt_i1 = d->fd;
-        *dt_i2 = d->flags;
-        *dt_i3 = d->c.writev.size;
-    }
-#endif
-    d->reply = reply;
-    d->c.writev.reply_size = reply_size;
-    d->invoke = invoke_writev;
-    d->free = free_data;
-    d->level = 1;
-    cq_enq(desc, d);
-    desc->write_buffered = 0;
-    return d;
-}
-
-static int flush_write(file_descriptor *desc, int *errp
-#ifdef USE_VM_PROBES
-                       , dt_private *dt_priv, char *dt_utag
-#endif
-) {
-    int    result = 0;
-#ifdef USE_VM_PROBES
-    Sint64 dt_i1 = 0, dt_i2 = 0, dt_i3 = 0;
-#endif
-    struct t_data *d = NULL;
-
-    MUTEX_LOCK(desc->q_mtx);
-    if (desc->write_buffered > 0) {
-	if ((d = async_write(desc, errp, 0, 0
-#ifdef USE_VM_PROBES
-			     ,&dt_i1, &dt_i2, &dt_i3
-#endif
-			     )) == NULL) {
-            result = -1;
-        }
-    }
-    MUTEX_UNLOCK(desc->q_mtx);
-#ifdef USE_VM_PROBES
-    if (d != NULL) {
-        d->sched_i1 = dt_priv->thread_num;
-        d->sched_i2 = dt_priv->tag;
-        d->sched_utag[0] = '\0';
-        if (dt_utag != NULL) {
-            if (dt_utag[0] == '\0') {
-                dt_utag = NULL;
-            } else {
-                strncpy(d->sched_utag, dt_utag, sizeof(d->sched_utag) - 1);
-                d->sched_utag[sizeof(d->sched_utag) - 1] = '\0';
-            }
-        }
-        DTRACE11(efile_drv_entry, dt_priv->thread_num, dt_priv->tag++,
-                 dt_utag, FILE_WRITE,
-                 NULL, NULL, dt_i1, dt_i2, dt_i3, 0, desc->port_str);
-    }
-#endif /* USE_VM_PROBES */
-    return result;
-}
-
-static int check_write_error(file_descriptor *desc, int *errp) {
-    if (desc->write_error) {
-	if (errp) *errp = desc->write_errInfo.posix_errno;
-	desc->write_error = 0;
-	return -1;
-    }
-    return 0;
-}
-
-static int flush_write_check_error(file_descriptor *desc, int *errp
-#ifdef USE_VM_PROBES
-                                   , dt_private *dt_priv, char *dt_utag
-#endif
-				   ) {
-    int r;
-    if ( (r = flush_write(desc, errp
-#ifdef USE_VM_PROBES
-			  , dt_priv, dt_utag
-#endif
-			  )) != 0) {
-	check_write_error(desc, NULL);
-	return r;
-    } else {
-	return check_write_error(desc, errp);
-    }
-}
-
-static struct t_data *async_lseek(file_descriptor *desc, int *errp, int reply,
-				  Sint64 offset, int origin
-#ifdef USE_VM_PROBES
-				  , Sint64 *dt_i1, Sint64 *dt_i2, Sint64 *dt_i3
-#endif
-				  ) {
-    struct t_data *d;
-    if (! (d = EF_ALLOC(sizeof(struct t_data)))) {
-	*errp = ENOMEM;
-	return NULL;
-    }
-    d->flags = desc->flags;
-    d->fd = desc->fd;
-    d->command = FILE_LSEEK;
-    d->reply = reply;
-    d->c.lseek.offset = offset;
-    d->c.lseek.origin = origin;
-#ifdef USE_VM_PROBES
-    if (dt_i1 != NULL) {
-        *dt_i1 = d->fd;
-        *dt_i2 = d->c.lseek.offset;
-        *dt_i3 = d->c.lseek.origin;
-    }
-#endif
-    d->invoke = invoke_lseek;
-    d->free = free_data;
-    d->level = 1;
-    cq_enq(desc, d);
-    return d;
-}
-
-static void flush_read(file_descriptor *desc) {
-    desc->read_offset = 0;
-    desc->read_size = 0;
-    if (desc->read_binp) {
-	driver_free_binary(desc->read_binp);
-	desc->read_binp = NULL;
-    }
-}
-
-static int lseek_flush_read(file_descriptor *desc, int *errp
-#ifdef USE_VM_PROBES
-			    ,dt_private *dt_priv, char *dt_utag
-#endif
-			    ) {
-    int r = 0;
-    size_t read_size = desc->read_size;
-#ifdef USE_VM_PROBES
-    Sint64 dt_i1 = 0, dt_i2 = 0, dt_i3 = 0;
-#endif
-    struct t_data *d;
-
-    flush_read(desc);
-    if (read_size != 0) {
-	if ((d = async_lseek(desc, errp, 0,
-                             -((ssize_t)read_size), EFILE_SEEK_CUR
-#ifdef USE_VM_PROBES
-			     , &dt_i1, &dt_i2, &dt_i3
-#endif
-			     )) == NULL) {
-            r = -1;
-        } else {
-#ifdef USE_VM_PROBES
-            d->sched_i1 = dt_priv->thread_num;
-            d->sched_i2 = dt_priv->tag;
-            d->sched_utag[0] = '\0';
-            if (dt_utag != NULL) {
-                if (dt_utag[0] == '\0') {
-                    dt_utag = NULL;
-                } else {
-                    strncpy(d->sched_utag, dt_utag, sizeof(d->sched_utag) - 1);
-                    d->sched_utag[sizeof(d->sched_utag) - 1] = '\0';
-                }
-            }
-            DTRACE11(efile_drv_entry, dt_priv->thread_num, dt_priv->tag++,
-                     dt_utag, FILE_LSEEK,
-                     NULL, NULL, dt_i1, dt_i2, dt_i3, 0, desc->port_str);
-#endif /* USE_VM_PROBES */
-        }
-    }
-    return r;
-}
-
-
-/*********************************************************************
- * Driver entry point -> stop
- * The close has to be scheduled on async thread, so that currently active
- * async operation does not suddenly have the ground disappearing under their feet...
- */
-static void 
-file_stop(ErlDrvData e)
-{
-    file_descriptor* desc = (file_descriptor*)e;
-
-    TRACE_C('p');
-
-    IF_THRDS {
-	flush_read(desc);
-	if (desc->fd != FILE_FD_INVALID) {
-	    struct t_data *d = EF_SAFE_ALLOC(sizeof(struct t_data));
-	    d->command = FILE_CLOSE_ON_PORT_EXIT;
-	    d->reply = !0;
-	    d->fd = desc->fd;
-	    d->flags = desc->flags;
-	    d->invoke = invoke_close;
-	    d->free = free_data;
-	    d->level = 2;
-	    d->data_to_free = (void *) desc;
-	    cq_enq(desc, d);
-	    desc->fd = FILE_FD_INVALID;
-	    desc->flags = 0;
-	    cq_execute(desc);
-	} else {
-	    EF_FREE(desc);
-	}
-    } else {
-	if (desc->fd != FILE_FD_INVALID) {
-	    do_close(desc->flags, desc->fd);
-	    desc->fd = FILE_FD_INVALID;
-	    desc->flags = 0;
-	}
-	if (desc->read_binp) {
-	    driver_free_binary(desc->read_binp);
-	}
-	EF_FREE(desc);
-    }
-}
-
-/*********************************************************************
- * Driver entry point -> ready_async
- */
-static void 
-file_async_ready(ErlDrvData e, ErlDrvThreadData data)
-{
-    file_descriptor *desc = (file_descriptor*)e;
-    struct t_data *d = (struct t_data *) data;
-    char header[5];		/* result code + count */
-    char resbuf[RESBUFSIZE];	/* Result buffer. */
-#ifdef  USE_VM_PROBES
-    int sched_i1 = d->sched_i1, sched_i2 = d->sched_i2, command = d->command,
-        result_ok = d->result_ok,
-        posix_errno = d->result_ok ? 0 : d->errInfo.posix_errno;
-    DTRACE_CHARBUF(sched_utag, DTRACE_EFILE_BUFSIZ+1);
-
-    sched_utag[0] = '\0';
-    if (DTRACE_ENABLED(efile_drv_return)) {
-        strncpy(sched_utag, d->sched_utag, DTRACE_EFILE_BUFSIZ);
-        sched_utag[DTRACE_EFILE_BUFSIZ] = '\0';
-    }
-#endif  /* USE_VM_PROBES */
-
-    TRACE_C('r');
-
-    if (try_again(desc, d)) {
-        /* DTRACE TODO: what kind of probe makes sense here? */
-	return;
-    }
-
-    switch (d->command)
-    {
-    case FILE_READ:
-	if (!d->result_ok) {
-	    reply_error(desc, &d->errInfo);
-	} else {
-	    size_t available_bytes = 
-		d->c.read.bin_offset + d->c.read.bin_size - desc->read_offset;
-	    if (available_bytes < d->c.read.size) {
-		d->c.read.size = available_bytes;
-	    }
-	    TRACE_C('D');
-	    reply_data(desc, d->c.read.binp, 
-		       desc->read_offset, d->c.read.size);
-	    desc->read_offset += d->c.read.size;
-	    desc->read_size = 
-		d->c.read.bin_offset + d->c.read.bin_size - desc->read_offset;
-	    try_free_read_bin(desc);
-	}
-	free_read(data);
-	break;
-      case FILE_READ_LINE:
-	  /* The read_line structure differs from the read structure.
-	     The data->read_offset and d->c.read_line.read_offset are copies, as are
-	     data->read_size and d->c.read_line.read_size
-             The read_line function does not kniow in advance how large the binary has to be,
-	     why new allocation (but not reallocation of the old binary, for obvious reasons) 
-	     may happen in the worker thread. */
-	if (!d->result_ok) {
-	    reply_error(desc, &d->errInfo);
-	} else {
-	    size_t len = d->c.read_line.nl_pos - d->c.read_line.read_offset;
-	    TRACE_C('L');
-	    reply_data(desc, d->c.read_line.binp, 
-		       d->c.read_line.read_offset, len);
-	    desc->read_offset = d->c.read_line.read_offset + d->c.read_line.nl_skip + len;
-	    desc->read_size = 
-		d->c.read_line.read_size - d->c.read_line.nl_skip - len;
-	    if (desc->read_binp != d->c.read_line.binp) { /* New binary allocated */
-		driver_free_binary(desc->read_binp);
-		desc->read_binp =  d->c.read_line.binp;
-		driver_binary_inc_refc(desc->read_binp);
-	    }
-#if !ALWAYS_READ_LINE_AHEAD
-	    ASSERT(desc->read_bufsize > 0 || desc->read_size == 0);
-	    if (desc->read_bufsize == 0) {
-		desc->read_offset = desc->read_binp->orig_size; /* triggers cleanup */
-	    }
-#endif
-	    try_free_read_bin(desc);
-	}
-	free_read_line(data);
-	break;
-      case FILE_READ_FILE:
-	if (!d->result_ok)
-	    reply_error(desc, &d->errInfo);
-	else {
-	    header[0] = FILE_RESP_ALL_DATA;
-	    TRACE_C('R');
-	    driver_output_binary(desc->port, header, 1,
-				 d->c.read_file.binp,
-				 0, d->c.read_file.offset);
-	}
-	free_read_file(data);
-	break;
-      case FILE_WRITE:
-	  if (d->reply) {
-	      if (! d->result_ok) {
-		  reply_error(desc, &d->errInfo);
-	      } else {
-		  reply_Uint(desc, d->c.writev.reply_size);
-	      }
-	  } else {
-	      if (! d->result_ok) {
-		  desc->write_error = !0;
-		  desc->write_errInfo = d->errInfo;
-	      }
-	  }
-	  free_data(data);
-	  break;
-      case FILE_LSEEK:
-	  if (d->reply) {
-	      if (d->result_ok)
-		  reply_Sint64(desc, d->c.lseek.location);
-	      else
-		  reply_error(desc, &d->errInfo);
-	  }
-	  free_data(data);
-	  break;
-      case FILE_MKDIR:
-      case FILE_RMDIR:
-      case FILE_CHDIR:
-      case FILE_DELETE:
-      case FILE_FDATASYNC:
-      case FILE_FSYNC:
-      case FILE_TRUNCATE:
-      case FILE_LINK:
-      case FILE_SYMLINK:
-      case FILE_RENAME:
-      case FILE_WRITE_INFO:
-      case FILE_FADVISE:
-      case FILE_FALLOCATE:
-	reply(desc, d->result_ok, &d->errInfo);
-	free_data(data);
-	break;
-      case FILE_ALTNAME:
-      case FILE_PWD:
-      case FILE_READLINK:
-        {
-	    int length;
-	    char *resbuf = d->b;
-
-	    if (!d->result_ok)
-		reply_error(desc, &d->errInfo);
-	    else {
-		resbuf[0] = FILE_RESP_FNAME;
-		length = 1+FILENAME_BYTELEN((char*) resbuf+1);
-		TRACE_C('R');
-		driver_output2(desc->port, resbuf, 1, resbuf+1, length-1);
-	    }
-	    free_data(data);
-	    break;
-	}
-      case FILE_OPEN:
-	if (!d->result_ok) {
-	    reply_error(desc, &d->errInfo);
-	} else {
-	    ASSERT(d->is_fd_unused);
-	    desc->fd = d->fd;
-	    desc->flags = d->flags;
-	    d->is_fd_unused = 0;
-	    reply_Uint(desc, d->fd);
-	}
-	free_data(data);
-	break;
-      case FILE_FSTAT:
-      case FILE_LSTAT:
-        {
-	    if (d->result_ok) {
-		resbuf[0] = FILE_RESP_INFO;
-
-		put_int32(d->info.size_high,         &resbuf[1 + ( 0 * 4)]);
-		put_int32(d->info.size_low,          &resbuf[1 + ( 1 * 4)]);
-		put_int32(d->info.type,              &resbuf[1 + ( 2 * 4)]);
-
-		/* Note 64 bit indexing in resbuf here */
-		put_int64(d->info.accessTime,        &resbuf[1 + ( 3 * 4)]);
-		put_int64(d->info.modifyTime,        &resbuf[1 + ( 5 * 4)]);
-		put_int64(d->info.cTime,             &resbuf[1 + ( 7 * 4)]);
-
-		put_int32(d->info.mode,              &resbuf[1 + ( 9 * 4)]);
-		put_int32(d->info.links,             &resbuf[1 + (10 * 4)]);
-		put_int32(d->info.major_device,      &resbuf[1 + (11 * 4)]);
-		put_int32(d->info.minor_device,      &resbuf[1 + (12 * 4)]);
-		put_int32(d->info.inode,             &resbuf[1 + (13 * 4)]);
-		put_int32(d->info.uid,               &resbuf[1 + (14 * 4)]);
-		put_int32(d->info.gid,               &resbuf[1 + (15 * 4)]);
-		put_int32(d->info.access,            &resbuf[1 + (16 * 4)]);
-
-#define RESULT_SIZE (1 + (17 * 4))
-		TRACE_C('R');
-		driver_output2(desc->port, resbuf, RESULT_SIZE, NULL, 0);
-#undef RESULT_SIZE
-	    } else
-		reply_error(desc, &d->errInfo);
-	}
-	free_data(data);
-	break;
-      case FILE_READDIR:
-	if (!d->result_ok) {
-	    reply_error(desc, &d->errInfo);
-	} else {
-	    struct t_readdir_buf *b1 = d->c.read_dir.first_buf;
-	    char   op = FILE_RESP_LFNAME;
-
-	    TRACE_C('R');
-	    ASSERT(b1);
-
-	    while (b1) {
-		struct t_readdir_buf *b2 = b1;
-		char *p = &b1->buf[0];
-		driver_output2(desc->port, p, 1, p + 1, b1->n - 1);
-		b1 = b1->next;
-		EF_FREE(b2);
-	    }
-	    driver_output2(desc->port, &op, 1, NULL, 0);
-    
-	    d->c.read_dir.first_buf = NULL;
-	    d->c.read_dir.last_buf = NULL;
-	}
-	free_readdir(data);
-	break;
-      case FILE_CLOSE:
-	  if (d->reply) {
-	      TRACE_C('K');
-	      reply_ok(desc);
-#ifdef USE_VM_PROBES
-              result_ok = 1;
-#endif
-	  }
-	  free_data(data);
-	  break;
-      case FILE_PWRITEV:
-	  if (!d->result_ok) {
-	      reply_Uint_error(desc, d->c.pwritev.cnt, &d->errInfo);
-	  } else {
-	      reply_Uint(desc, d->c.pwritev.n);
-	  }
-	  free_data(data);
-	  break;
-      case FILE_PREADV:
-	  if (!d->result_ok) {
-	      reply_error(desc, &d->errInfo);
-	  } else {
-	      reply_ev(desc, FILE_RESP_LDATA, &d->c.preadv.eiov);
-	  }
-	  free_preadv(data);
-	  break;
-      case FILE_IPREAD:
-	  if (!d->result_ok) {
-	      reply_error(desc, &d->errInfo);
-	  } else if (!d->c.preadv.eiov.vsize) {
-	      reply_eof(desc);
-	  } else {
-	      reply_ev(desc, FILE_RESP_N2DATA, &d->c.preadv.eiov);
-	  }
-	  free_preadv(data);
-	  break;
-#ifdef HAVE_SENDFILE
-      case FILE_SENDFILE:
-	  if (d->result_ok == -1) {
-	      if (d->errInfo.posix_errno == ECONNRESET ||
-		  d->errInfo.posix_errno == ENOTCONN ||
-		  d->errInfo.posix_errno == EPIPE)
-		  reply_string_error(desc,"closed");
-	      else
-		  reply_error(desc, &d->errInfo);
-	      desc->sendfile_state = not_sending;
-	      free_sendfile(data);
-	  } else if (d->result_ok == 0) {
-	      reply_Sint64(desc, d->c.sendfile.written);
-	      desc->sendfile_state = not_sending;
-	      free_sendfile(data);
-	  } else if (d->result_ok == 1) { /* If we are using select to send the rest of the data */
-	      desc->sendfile_state = sending;
-	      desc->d = d;
-	      driver_select(desc->port, (ErlDrvEvent)(long)d->c.sendfile.out_fd,
-			    ERL_DRV_USE|ERL_DRV_WRITE, 1);
-	  }
-	  break;
-#endif
-      case FILE_CLOSE_ON_PORT_EXIT:
-	  /* See file_stop. However this is never invoked after the port is killed. */
-	  free_data(data);
-	  desc = NULL;
-	  /* This is it for this port, so just send dtrace and return, avoid doing anything to the freed data */
-	  DTRACE6(efile_drv_return, sched_i1, sched_i2, sched_utag,
-		  command, result_ok, posix_errno);
-	  return;
-      default:
-	abort();
-    }
-    DTRACE6(efile_drv_return, sched_i1, sched_i2, sched_utag,
-            command, result_ok, posix_errno);
-    if (desc->write_buffered != 0 && desc->timer_state == timer_idle ) {
-	desc->timer_state = timer_write;
-	driver_set_timer(desc->port, desc->write_delay);
-    }
-    cq_execute(desc);
-
-}
-
-
-/*********************************************************************
- * Driver entry point -> output
- */
-static void 
-file_output(ErlDrvData e, char* buf, ErlDrvSizeT count)
-{
-    file_descriptor* desc = (file_descriptor*)e;
-    Efile_error errInfo;	/* The error codes for the last operation. */
-    Sint fd;			/* The file descriptor for this port, if any,
-				 * -1 if none.
-				 */
-    char* name;			/* Points to the filename in buf. */
-    int command;
-    struct t_data *d = NULL;
-#ifdef  USE_VM_PROBES
-    char *dt_utag = NULL;
-    char *dt_s1 = NULL, *dt_s2 = NULL;
-    Sint64 dt_i1 = 0;
-    Sint64 dt_i2 = 0;
-    Sint64 dt_i3 = 0;
-    Sint64 dt_i4 = 0;
-    dt_private *dt_priv = get_dt_private(0);
-#endif  /* USE_VM_PROBES */
-
-    TRACE_C('o');
-
-    fd  = desc->fd;
-    name = buf+1;
-    command = *(uchar*)buf++;
-
-    switch(command) {
-
-    case FILE_MKDIR:
-    {
-	d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1 + FILENAME_BYTELEN(name) + FILENAME_CHARSIZE);
-	
-	FILENAME_COPY(d->b, name);
-#ifdef USE_VM_PROBES
-	dt_s1 = d->b;
-	dt_utag = name + FILENAME_BYTELEN(name) + FILENAME_CHARSIZE;
-#endif
-	d->command = command;
-	d->invoke = invoke_mkdir;
-	d->free = free_data;
-	d->level = 2;
-	goto done;
-    }
-    case FILE_RMDIR:
-    {
-	d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1 + FILENAME_BYTELEN(name) + FILENAME_CHARSIZE);
-	
-	FILENAME_COPY(d->b, name);
-#ifdef USE_VM_PROBES
-	dt_s1 = d->b;
-	dt_utag = name + FILENAME_BYTELEN(name) + FILENAME_CHARSIZE;
-#endif
-	d->command = command;
-	d->invoke = invoke_rmdir;
-	d->free = free_data;
-	d->level = 2;
-	goto done;
-    }
-    case FILE_DELETE:
-    {
-	d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1 + FILENAME_BYTELEN(name) + FILENAME_CHARSIZE);
-	
-	FILENAME_COPY(d->b, name);
-#ifdef USE_VM_PROBES
-	dt_s1 = d->b;
-	dt_utag = name + FILENAME_BYTELEN(name) + FILENAME_CHARSIZE;
-#endif
-	d->command = command;
-	d->invoke = invoke_delete_file;
-	d->free = free_data;
-	d->level = 2;
-	goto done;
-    }
-    case FILE_RENAME:
-	{
-	    char* new_name;
-	    int namelen = FILENAME_BYTELEN(name)+FILENAME_CHARSIZE;
-	    new_name = name+namelen;
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1
-			      + namelen
-			      + FILENAME_BYTELEN(new_name) + FILENAME_CHARSIZE);
-	
-	    FILENAME_COPY(d->b, name);
-	    FILENAME_COPY(d->b + namelen, new_name);
-#ifdef USE_VM_PROBES
-	    dt_s1 = d->b;
-	    dt_s2 = d->b + namelen;
-	    dt_utag = buf + namelen + FILENAME_BYTELEN(new_name) + FILENAME_CHARSIZE;
-#endif
-	    d->flags = desc->flags;
-	    d->fd = fd;
-	    d->command = command;
-	    d->invoke = invoke_rename;
-	    d->free = free_data;
-	    d->level = 2;
-	    goto done;
-	}
-    case FILE_CHDIR:
-    {
-	d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1 + FILENAME_BYTELEN(name) + FILENAME_CHARSIZE);
-	
-	FILENAME_COPY(d->b, name);
-#ifdef USE_VM_PROBES
-	dt_s1 = d->b;
-	dt_utag = name + FILENAME_BYTELEN(name) + FILENAME_CHARSIZE;
-#endif
-	d->command = command;
-	d->invoke = invoke_chdir;
-	d->free = free_data;
-	d->level = 2;
-	goto done;
-    }
-    case FILE_PWD:
-        {
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1 + RESBUFSIZE + 1);
-	
-	    d->drive = *(uchar*)buf;
-#ifdef USE_VM_PROBES
-	    dt_utag = buf + 1;
-#endif
-	    d->command = command;
-	    d->invoke = invoke_pwd;
-	    d->free = free_data;
-	    d->level = 2;
-	    goto done;
-	}
-
-    case FILE_READDIR: 
-	if (sys_info.async_threads > 0)
-	{
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1 + FILENAME_BYTELEN(name) + 
-			      FILENAME_CHARSIZE);
-	
-	    FILENAME_COPY(d->b, name);
-#ifdef USE_VM_PROBES
-	    dt_s1 = d->b;
-	    dt_utag = name + FILENAME_BYTELEN(name) + FILENAME_CHARSIZE;
-#endif
-	    d->dir_handle = NULL;
-	    d->command = command;
-	    d->invoke = invoke_readdir;
-	    d->free = free_readdir;
-	    d->level = 2;
-	    d->c.read_dir.first_buf = NULL;
-	    d->c.read_dir.last_buf = NULL;
-	    goto done;
-	}
-	else   
-	{
-	    size_t resbufsize;
-	    size_t n = 0, total = 0;
-	    int res = 0;
-	    char resbuf[READDIR_BUFSIZE];
-
-	    EFILE_DIR_HANDLE dir_handle; /* Handle to open directory. */
-
-	    total               = READDIR_BUFSIZE;
-	    errInfo.posix_errno = 0;
-	    dir_handle          = NULL;
-	    resbuf[0]           = FILE_RESP_LFNAME;
-
-#ifdef USE_VM_PROBES
-	    dt_s1 = name;
-	    dt_utag = name + FILENAME_BYTELEN(name) + FILENAME_CHARSIZE;
-#endif
-	    /* Fill the buffer with multiple directory listings before sending it to the
-	     * receiving process. READDIR_CHUNKS is minimum number of files sent to the
-	     * receiver.
-	     * Format for each driver_output2:
-	     * ------------------------------------
-	     * | Type   | Len     | Filename  | ...
-	     * | 1 byte | 2 bytes | Len bytes | ...
-	     * ------------------------------------
-	     */
-
-	    do {
-		n = 1;
-		resbufsize = READDIR_BUFSIZE - n;
-
-		do {
-		    res = efile_readdir(&errInfo, name, &dir_handle, resbuf + n + 2, &resbufsize);
-
-		    if (res) {
-			put_int16((Uint16)resbufsize, resbuf + n);
-			n += 2 + resbufsize;
-			resbufsize = READDIR_BUFSIZE - n;
-		    }
-		} while( res && ((total - n - 2) >= MAXPATHLEN*FILENAME_CHARSIZE));
-
-		if (n > 1) {
-		    driver_output2(desc->port, resbuf, 1, resbuf + 1, n - 1);
-		}
-	    } while(res);
-
-	    if (errInfo.posix_errno != 0) {
-		reply_error(desc, &errInfo);
-		return;
-	    }
-#ifdef USE_VM_PROBES
-	    if (dt_utag != NULL && dt_utag[0] == '\0') {
-                dt_utag = NULL;
-            } 
-
-	    DTRACE11(efile_drv_entry, dt_priv->thread_num, dt_priv->tag,
-		     dt_utag, command, name, dt_s2,
-		     dt_i1, dt_i2, dt_i3, dt_i4, desc->port_str);
-	    DTRACE6(efile_drv_return, dt_priv->thread_num, dt_priv->tag++, 
-		    dt_utag, command, 1, 0);
-#endif
-	    TRACE_C('R');
-	    driver_output2(desc->port, resbuf, 1, NULL, 0);
-	    return;
-	}
-    case FILE_OPEN:
-	{
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1 + FILENAME_BYTELEN(buf+4) + 
-			      FILENAME_CHARSIZE);
-	
-	    d->flags = get_int32((uchar*)buf);
-	    name = buf+4;
-	    FILENAME_COPY(d->b, name);
-#ifdef USE_VM_PROBES
-	    dt_i1 = d->flags;
-	    dt_s1 = d->b;
-	    dt_utag = name + FILENAME_BYTELEN(d->b) + FILENAME_CHARSIZE;
-#endif
-	    d->command = command;
-	    d->invoke = invoke_open;
-	    d->free = free_data;
-	    d->level = 2;
-	    d->is_fd_unused = 1;
-	    goto done;
-	}
-
-    case FILE_FDATASYNC:
-	{
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data));
-	    
-	    d->fd = fd;
-#ifdef USE_VM_PROBES
-	    dt_utag = name;
-	    dt_i1 = fd;
-#endif
-	    d->command = command;
-	    d->invoke = invoke_fdatasync;
-	    d->free = free_data;
-	    d->level = 2;
-	    goto done;
-	}
-
-    case FILE_FSYNC:
-	{
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data));
-	    
-	    d->fd = fd;
-#ifdef USE_VM_PROBES
-	    dt_utag = name;
-	    dt_i1 = fd;
-#endif
-	    d->command = command;
-	    d->invoke = invoke_fsync;
-	    d->free = free_data;
-	    d->level = 2;
-	    goto done;
-	}
-
-
-    case FILE_FSTAT: 
-    case FILE_LSTAT:
-	{
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1 + FILENAME_BYTELEN(name) + 
-			      FILENAME_CHARSIZE);
-	    
-	    FILENAME_COPY(d->b, name);
-	    d->fd = fd;
-#ifdef USE_VM_PROBES
-	    dt_utag = name + FILENAME_BYTELEN(d->b) + FILENAME_CHARSIZE;
-	    if (command == FILE_LSTAT) {
-		dt_s1 = d->b;
-	    } else {
-		dt_i1 = fd;
-	    }
-#endif
-	    d->command = command;
-	    d->invoke = invoke_flstat;
-	    d->free = free_data;
-	    d->level = 2;
-	    goto done;
-	}
-	
-    case FILE_TRUNCATE:
-        {
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data));
-	    
-	    d->flags = desc->flags;
-	    d->fd = fd;
-#ifdef USE_VM_PROBES
-	    dt_utag = name;
-	    dt_i1 = fd;
-	    dt_i2 = d->flags;
-#endif
-	    d->command = command;
-	    d->invoke = invoke_truncate;
-	    d->free = free_data;
-	    d->level = 2;
-	    goto done;
-	}
-
-    case FILE_WRITE_INFO:
-	{
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1
-			      + FILENAME_BYTELEN(buf + 9*4) + FILENAME_CHARSIZE);
-	    
-	    d->info.mode       = get_int32(buf + 0 * 4);
-	    d->info.uid        = get_int32(buf + 1 * 4);
-	    d->info.gid        = get_int32(buf + 2 * 4);
-	    d->info.accessTime = get_int64(buf + 3 * 4);
-	    d->info.modifyTime = get_int64(buf + 5 * 4);
-	    d->info.cTime      = get_int64(buf + 7 * 4);
-
-	    FILENAME_COPY(d->b, buf + 9*4);
-#ifdef USE_VM_PROBES
-	    dt_i1              = d->info.mode;
-	    dt_i2              = d->info.uid;
-	    dt_i3              = d->info.gid;
-	    dt_s1 = d->b;
-	    dt_utag = buf + 9 * 4 + FILENAME_BYTELEN(d->b) + FILENAME_CHARSIZE;
-#endif
-	    d->command = command;
-	    d->invoke = invoke_write_info;
-	    d->free = free_data;
-	    d->level = 2;
-	    goto done;
-	}
-
-    case FILE_READLINK:
-	{
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1 + 
-			      MAX(RESBUFSIZE, (FILENAME_BYTELEN(name) +  
-					       FILENAME_CHARSIZE))  + 1);
-	    FILENAME_COPY(d->b, name);
-#ifdef USE_VM_PROBES
-	    dt_s1 = d->b;
-	    dt_utag = name + FILENAME_BYTELEN(d->b) + FILENAME_CHARSIZE;
-#endif
-	    d->command = command;
-	    d->invoke = invoke_readlink;
-	    d->free = free_data;
-	    d->level = 2;
-	    goto done;
-	}
-
-    case FILE_ALTNAME:
-	{
-	     d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1 + 
-			       MAX(RESBUFSIZE, (FILENAME_BYTELEN(name) +  
-						FILENAME_CHARSIZE))  + 1);
-	    FILENAME_COPY(d->b, name);
-#ifdef USE_VM_PROBES
-	    dt_s1 = d->b;
-	    dt_utag = name + FILENAME_BYTELEN(d->b) + FILENAME_CHARSIZE;
-#endif
-	    d->command = command;
-	    d->invoke = invoke_altname;
-	    d->free = free_data;
-	    d->level = 2;
-	    goto done;
-	}
-
-
-    case FILE_LINK:
-	{
-	    char* new_name;
-	    int namelen = FILENAME_BYTELEN(name) + FILENAME_CHARSIZE;
-
-	    new_name = name+namelen;
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1
-			      + namelen
-			      + FILENAME_BYTELEN(new_name) + FILENAME_CHARSIZE);
-	
-	    FILENAME_COPY(d->b, name);
-	    FILENAME_COPY(d->b + namelen, new_name);
-#ifdef USE_VM_PROBES
-	    dt_s1 = d->b;
-	    dt_s2 = d->b + namelen;
-	    dt_utag = buf + namelen + FILENAME_BYTELEN(dt_s2) + FILENAME_CHARSIZE;
-#endif
-	    d->flags = desc->flags;
-	    d->fd = fd;
-	    d->command = command;
-	    d->invoke = invoke_link;
-	    d->free = free_data;
-	    d->level = 2;
-	    goto done;
-	}
-
-    case FILE_SYMLINK:
-	{
-	    char* new_name;
-	    int namelen = FILENAME_BYTELEN(name) + FILENAME_CHARSIZE;
-
-	    new_name = name+namelen;
-	    d = EF_SAFE_ALLOC(sizeof(struct t_data) - 1
-			      + namelen
-			      + FILENAME_BYTELEN(new_name) + FILENAME_CHARSIZE);
-	
-	    FILENAME_COPY(d->b, name);
-	    FILENAME_COPY(d->b + namelen, new_name);
-#ifdef USE_VM_PROBES
-	    dt_s1 = d->b;
-	    dt_s2 = d->b + namelen;
-	    dt_utag = buf + namelen + FILENAME_BYTELEN(dt_s2) + FILENAME_CHARSIZE;
-#endif
-	    d->flags = desc->flags;
-	    d->fd = fd;
-	    d->command = command;
-	    d->invoke = invoke_symlink;
-	    d->free = free_data;
-	    d->level = 2;
-	    goto done;
-	}
-
-    case FILE_FADVISE:
-    {
-        d = EF_SAFE_ALLOC(sizeof(struct t_data));
-
-        d->fd = fd;
-        d->command = command;
-        d->invoke = invoke_fadvise;
-        d->free = free_data;
-        d->level = 2;
-        d->c.fadvise.offset = get_int64((uchar*) buf);
-        d->c.fadvise.length = get_int64(((uchar*) buf) + sizeof(Sint64));
-        d->c.fadvise.advise = get_int32(((uchar*) buf) + 2 * sizeof(Sint64));
-#ifdef USE_VM_PROBES
-        dt_i1 = d->fd;
-        dt_i2 = d->c.fadvise.offset;
-        dt_i3 = d->c.fadvise.length;
-        dt_i4 = d->c.fadvise.advise;
-        dt_utag = buf + 3 * sizeof(Sint64);
-#endif
-        goto done;
-    }
-
-    case FILE_FALLOCATE:
-    {
-        d = EF_SAFE_ALLOC(sizeof(struct t_data));
-
-        d->fd = fd;
-        d->command = command;
-        d->invoke = invoke_fallocate;
-        d->free = free_data;
-        d->level = 2;
-        d->c.fallocate.offset = get_int64((uchar*) buf);
-        d->c.fallocate.length = get_int64(((uchar*) buf) + sizeof(Sint64));
-        goto done;
-    }
-
-    }
-
-    /*
-     * Ignore anything else -- let the caller hang.
-     */
-     
-    return;
-
- done:
-    if (d) {
-#ifdef USE_VM_PROBES
-	d->sched_i1 = dt_priv->thread_num;
-	d->sched_i2 = dt_priv->tag;
-	d->sched_utag[0] = '\0';
-	if (dt_utag != NULL) {
-	    if (dt_utag[0] == '\0') {
-		dt_utag = NULL;
-	    } else {
-		strncpy(d->sched_utag, dt_utag, sizeof(d->sched_utag) - 1);
-		d->sched_utag[sizeof(d->sched_utag) - 1] = '\0';
-	    }
-	}
-	DTRACE11(efile_drv_entry, dt_priv->thread_num, dt_priv->tag++,
-		 dt_utag, command, dt_s1, dt_s2,
-		 dt_i1, dt_i2, dt_i3, dt_i4, desc->port_str);
-#endif
-	cq_enq(desc, d);
-    }
-}
-
-/*********************************************************************
- * Driver entry point -> flush
- */
-static void 
-file_flush(ErlDrvData e) {
-    file_descriptor *desc = (file_descriptor *)e;
-#ifdef DEBUG
-    int r;
-#endif
-#ifdef  USE_VM_PROBES
-    dt_private *dt_priv = get_dt_private(dt_driver_io_worker_base);
-#endif
-
-    TRACE_C('f');
-
-#ifdef HAVE_SENDFILE
-    flush_sendfile(desc, NULL);
-#endif
-
-#ifdef DEBUG
-    r = 
-#endif
-         flush_write(desc, NULL
-#ifdef USE_VM_PROBES
-		     , dt_priv, (desc->d == NULL) ? NULL : desc->d->sched_utag
-#endif
-		     );
-    /* Only possible reason for bad return value is ENOMEM, and 
-     * there is nobody to tell...
-     */
-#ifdef DEBUG
-    ASSERT(r == 0); 
-#endif
-    cq_execute(desc);
-}
-
-
-
-/*********************************************************************
- * Driver entry point -> control
- * Only debug functionality...
- */
-static ErlDrvSSizeT
-file_control(ErlDrvData e, unsigned int command, 
-	     char* buf, ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen) {
-    file_descriptor *desc = (file_descriptor *)e;
-    switch (command) {
-    case 'K' :
-	if (rlen < 4) {
-	    *rbuf = EF_ALLOC(4);
-	}
-	(*rbuf)[0] = ((desc->key) >> 24) & 0xFF;
-	(*rbuf)[1] = ((desc->key) >> 16) & 0xFF;
-	(*rbuf)[2] = ((desc->key) >> 8) & 0xFF;
-	(*rbuf)[3] = (desc->key) & 0xFF;
-	return 4;
-    default:
-	return 0;
-    }
-}
-
-/*********************************************************************
- * Driver entry point -> timeout
- */
-static void 
-file_timeout(ErlDrvData e) {
-    file_descriptor *desc = (file_descriptor *)e;
-    enum e_timer timer_state = desc->timer_state;
-#ifdef  USE_VM_PROBES
-    dt_private *dt_priv = get_dt_private(dt_driver_io_worker_base);
-#endif
-
-    TRACE_C('t');
-
-    desc->timer_state = timer_idle;
-    switch (timer_state) {
-    case timer_idle:
-	ASSERT(0);
-	break;
-    case timer_again:
-	ASSERT(desc->invoke);
-	ASSERT(desc->free);
-	driver_async(desc->port, KEY(desc), desc->invoke, desc->d, desc->free);
-	break;
-    case timer_write: {
-#ifdef DEBUG
-	int r = 
-#endif
-	         flush_write(desc, NULL
-#ifdef USE_VM_PROBES
-			     , dt_priv, (desc->d == NULL) ? NULL : desc->d->sched_utag
-#endif
-			     );
-	/* Only possible reason for bad return value is ENOMEM, and 
-	 * there is nobody to tell...
-	 */
-	ASSERT(r == 0); 
-	cq_execute(desc);
-    } break;
-    } /* case */
-}
-
-
-
-/*********************************************************************
- * Driver entry point -> outputv
- */
-static void 
-file_outputv(ErlDrvData e, ErlIOVec *ev) {
-    file_descriptor* desc = (file_descriptor*)e;
-    char command;
-    size_t p, q;
-    int err;
-    struct t_data *d = NULL;
-#ifdef USE_VM_PROBES
-    Sint64 dt_i1 = 0, dt_i2 = 0, dt_i3 = 0;
-    Sint64 dt_i4 = 0;
-    char *dt_utag = NULL;
-    char *dt_s1 = NULL;
-    dt_private *dt_priv = get_dt_private(dt_driver_io_worker_base);
-#endif
-
-    TRACE_C('v');
-
-    p = 0; q = 1;
-    if (! EV_GET_CHAR(ev, &command, &p, &q)) {
-	/* Empty command */
-	reply_posix_error(desc, EINVAL);
-	goto done;
-    }
-    /* 'command' contains the decoded command number,
-     * 'p' and 'q' point out the next byte in the command:
-     * ((char *)ev->iov[q].iov_base) + p;
-     */
-    
-    TRACE_F(("%i", (int) command));
-
-    switch (command) {
-
-    case FILE_CLOSE: {
-#ifdef USE_VM_PROBES
-	dt_utag = EV_CHAR_P(ev, p, q);
-#endif
-	flush_read(desc);
-	if (flush_write_check_error(desc, &err
-#ifdef USE_VM_PROBES
-				    , dt_priv, dt_utag
-#endif
-				    ) < 0) {
-	    reply_posix_error(desc, err);
-	    goto done;
-	}
-	if (desc->fd != FILE_FD_INVALID) {
-	    if (! (d = EF_ALLOC(sizeof(struct t_data)))) {
-		reply_posix_error(desc, ENOMEM);
-	    } else {
-		d->command = command;
-		d->reply = !0;
-		d->fd = desc->fd;
-		d->flags = desc->flags;
-#ifdef USE_VM_PROBES
-		dt_i1 = d->fd;
-		dt_i2 = d->flags;
-#endif
-		d->invoke = invoke_close;
-		d->free = free_data;
-		d->level = 2;
-		cq_enq(desc, d);
-		desc->fd = FILE_FD_INVALID;
-		desc->flags = 0;
-	    }
-	} else {
-	    reply_posix_error(desc, EBADF);
-	}
-    } goto done;
-
-    case FILE_READ: {
-	Uint32 sizeH, sizeL;
-	size_t size, alloc_size;
-
-	if (!EV_GET_UINT32(ev, &sizeH, &p, &q)
-	    || !EV_GET_UINT32(ev, &sizeL, &p, &q)) {
-	    /* Wrong buffer length to contain the read count */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-#ifdef USE_VM_PROBES
-	dt_utag = EV_CHAR_P(ev, p, q);
-#endif
-	if (flush_write_check_error(desc, &err
-#ifdef USE_VM_PROBES
-				    , dt_priv, dt_utag
-#endif
-				    ) < 0) {
-	    reply_posix_error(desc, err);
-	    goto done;
-	}
-#if ALWAYS_READ_LINE_AHEAD
-	if (desc->read_bufsize == 0 && desc->read_binp != NULL && desc->read_size > 0) {
-	    /* We have allocated a buffer for line mode but should not really have a 
-	       read-ahead buffer... */
-	    if (lseek_flush_read(desc, &err
-#ifdef USE_VM_PROBES
-				 , dt_priv, dt_utag
-#endif
-				 ) < 0) {
-		reply_posix_error(desc, err);
-		goto done;
-	    }
-	}
-#endif
-#if SIZEOF_SIZE_T == 4
-	if (sizeH != 0) {
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-	size = sizeL;
-#else
-	size = ((size_t)sizeH << 32) | sizeL;
-#endif
-	if ((desc->fd == FILE_FD_INVALID)
-	    || (! (desc->flags & EFILE_MODE_READ)) ) {
-	    reply_posix_error(desc, EBADF);
-	    goto done;
-	}
-	if (size == 0) {
-	    reply_buf(desc, &command, 0);
-	    goto done;
-	}
-	if (desc->read_size >= size) {
-	    /* We already have all data */
-	    TRACE_C('D');
-	    reply_data(desc, desc->read_binp, desc->read_offset, size);
-	    desc->read_offset += size;
-	    desc->read_size -= size;
-	    try_free_read_bin(desc);
-	    goto done;
-	}
-	/* We may have some of the data 
-	 */
-	/* Justification for the following strange formula:
-	 * If the read request is for such a large block as more than 
-	 * half the buffer size it may lead to a lot of unnecessary copying, 
-	 * since the tail of the old buffer is copied to the head of the
-	 * new, and if the tail is almost half the buffer it is a lot
-	 * to copy. Therefore allocate the exact amount needed in 
-	 * this case, giving no lingering tail. */
-	alloc_size = 
-	    size > (desc->read_bufsize>>1) ? 
-	    size : desc->read_bufsize;
-	if (! desc->read_binp) {
-	    /* Need to allocate a new binary for the result */
-	    if (! (desc->read_binp = driver_alloc_binary(alloc_size))) {
-		reply_posix_error(desc, ENOMEM);
-		goto done;
-	    }
-	} else {
-	    /* We already have a buffer */
-	    if (desc->read_binp->orig_size - desc->read_offset < size) {
-		/* Need to allocate a new binary for the result */
-		ErlDrvBinary *binp;
-		if (! (binp = driver_alloc_binary(alloc_size))) {
-		    reply_posix_error(desc, ENOMEM);
-		    goto done;
-		}
-		/* Move data we already have to the new binary */
-		sys_memcpy(binp->orig_bytes, 
-			   desc->read_binp->orig_bytes + desc->read_offset,
-			   desc->read_size);
-		driver_free_binary(desc->read_binp);
-		desc->read_offset = 0;
-		desc->read_binp = binp;
-	    }
-	} 
-	if (! (d = EF_ALLOC(sizeof(struct t_data)))) {
-	    reply_posix_error(desc, ENOMEM);
-	    goto done;
-	}
-	d->command = command;
-	d->reply = !0;
-	d->fd = desc->fd;
-	d->flags = desc->flags;
-	d->c.read.binp = desc->read_binp;
-	d->c.read.bin_offset = desc->read_offset + desc->read_size;
-	d->c.read.bin_size = desc->read_binp->orig_size - d->c.read.bin_offset;
-	d->c.read.size = size;
-#ifdef USE_VM_PROBES
-	dt_i1 = d->fd;
-	dt_i2 = d->flags;
-	dt_i3 = d->c.read.size;
-#endif
-	driver_binary_inc_refc(d->c.read.binp);
-	d->invoke = invoke_read;
-	d->free = free_read;
-	d->level = 1;
-	cq_enq(desc, d);
-    } goto done; /* case FILE_READ: */
-
-    case FILE_READ_LINE: {
-	/*
-	 * Icky little creature... We do mostly as ordinary file read, but with a few differences.
-	 * 1) We have to scan for proper newline sequence if there is a buffer already, we cannot know 
-	 *    in advance if the buffer contains a whole line without scanning.
-	 * 2) We do not know how large the buffer needs to be in advance. We give a default buffer,
-	 *    but the worker may need to allocate a new one. Freeing the old and rereferencing a newly 
-	 *    allocated binary + dealing with offsets and lengts are done in file_async ready
-	 *    for this OP.
-	 */
-#ifdef USE_VM_PROBES
-	dt_utag = EV_CHAR_P(ev, p, q);
-#endif
-	if (flush_write_check_error(desc, &err
-#ifdef USE_VM_PROBES
-				    , dt_priv, dt_utag
-#endif
-				    ) < 0) {
-	    reply_posix_error(desc, err);
-	    goto done;
-	}
-	if (ev->size != 1
-#ifdef USE_VM_PROBES
-	    + FILENAME_BYTELEN(dt_utag) + FILENAME_CHARSIZE
-#endif
-	    ) {
-	    /* Wrong command length */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-	if ((desc->fd == FILE_FD_INVALID)
-	    || (! (desc->flags & EFILE_MODE_READ)) ) {
-	    reply_posix_error(desc, EBADF);
-	    goto done;
-	}
-	if (desc->read_size > 0) {
-	    /* look for '\n' in what we'we already got */
-	    void *nl_ptr = memchr(desc->read_binp->orig_bytes + desc->read_offset,'\n',desc->read_size);
-	    if (nl_ptr != NULL) {
-		/* If found, we're done */
-		int skip = 0;
-		size_t size = ((char *) nl_ptr) - 
-		    ((char *) (desc->read_binp->orig_bytes + desc->read_offset)) + 1;
-		if (size > 1 &&
-		    *(((char *) nl_ptr) - 1) == '\r') {
-		    *(((char *) nl_ptr) - 1) = '\n';		    
-		    skip = 1;
-		    --size;
-		} 
-		reply_data(desc, desc->read_binp, desc->read_offset, size);
-		desc->read_offset += (size + skip);
-		desc->read_size -= (size + skip);
-		try_free_read_bin(desc);
-		goto done;
-	    }
-	}
-	/* Now, it's up to the thread to work out the need for more buffers and such, it's
-	   no use doing it in this thread as we do not have the information required anyway. 
-	   Even a NULL buffer could be handled by the thread, but code is simplified by us 
-	   allocating it */
-	if (! desc->read_binp) {
-	    int alloc_size = (desc->read_bufsize > DEFAULT_LINEBUF_SIZE) ? desc->read_bufsize : 
-		DEFAULT_LINEBUF_SIZE;
-	    /* Allocate a new binary for the result */
-	    if (! (desc->read_binp = driver_alloc_binary(alloc_size))) {
-		reply_posix_error(desc, ENOMEM);
-		goto done;
-	    }
-	}	
-	if (! (d = EF_ALLOC(sizeof(struct t_data)))) {
-	    reply_posix_error(desc, ENOMEM);
-	    goto done;
-	}
-
-	d->command = command;
-	d->reply = !0;
-	d->fd = desc->fd;
-	d->flags = desc->flags;
-	d->c.read_line.binp = desc->read_binp;
-	d->c.read_line.read_offset = desc->read_offset;
-	d->c.read_line.read_size = desc->read_size;
-#ifdef USE_VM_PROBES
-	dt_i1 = d->fd;
-	dt_i2 = d->flags;
-	dt_i3 = d->c.read_line.read_offset;
-#endif
-#if !ALWAYS_READ_LINE_AHEAD
-	d->c.read_line.read_ahead = (desc->read_bufsize > 0);
-#ifdef USE_VM_PROBES
-	dt_i4 = d->c.read_line.read_ahead;
-#endif
-#endif 
-	driver_binary_inc_refc(d->c.read.binp);
-	d->invoke = invoke_read_line;
-	d->free = free_read_line;
-	d->level = 1;
-	cq_enq(desc, d);
-    } goto done;
-    case FILE_WRITE: { /* Dtrace: The dtrace user tag is not last in message, 
-			  but follows the message tag directly. 
-			  This is handled specially in prim_file.erl */
-	ErlDrvSizeT skip = 1;
-	ErlDrvSizeT size = ev->size - skip;
-
-#ifdef USE_VM_PROBES
-	dt_utag = EV_CHAR_P(ev, p, q);
-	skip += FILENAME_BYTELEN(dt_utag) + FILENAME_CHARSIZE;
-	size = ev->size - skip;
-#endif
-	if (lseek_flush_read(desc, &err
-#ifdef USE_VM_PROBES
-			     , dt_priv, dt_utag
-#endif
-			     ) < 0) {
-	    reply_posix_error(desc, err);
-	    goto done;
-	}
-	if (! (desc->flags & EFILE_MODE_WRITE)) {
-	    reply_posix_error(desc, EBADF);
-	    goto done;
-	}
-	if (size == 0) {
-	    reply_Uint(desc, size);
-	    goto done;
-	}
-	MUTEX_LOCK(desc->q_mtx);
-	if (driver_enqv(desc->port, ev, skip)) {
-	    MUTEX_UNLOCK(desc->q_mtx);
-	    reply_posix_error(desc, ENOMEM);
-	    goto done;
-	}
-	desc->write_buffered += size;
-	if (desc->write_buffered < desc->write_bufsize) {
-	    MUTEX_UNLOCK(desc->q_mtx);
-	    reply_Uint(desc, size);
-	    if (desc->timer_state == timer_idle) {
-		desc->timer_state = timer_write;
-		driver_set_timer(desc->port, desc->write_delay);
-	    }
-	} else {
-	    if ((d = async_write(desc, &err, !0, size
-#ifdef USE_VM_PROBES
-				 , &dt_i1, &dt_i2, &dt_i3
-#endif
-				 )) == NULL) {
-		MUTEX_UNLOCK(desc->q_mtx);
-		reply_posix_error(desc, err);
-		goto done;
-	    } else {
-		MUTEX_UNLOCK(desc->q_mtx);
-	    }
-	}
-    } goto done; /* case FILE_WRITE */
-
-    case FILE_PWRITEV: { /* Dtrace: The dtrace user tag is not last in message, 
-			   but follows the message tag directly. 
-			   This is handled specially in prim_file.erl */
-	Uint32 i, j, n; 
-	size_t total;
-#ifdef USE_VM_PROBES
-	char dt_tmp;
-	int dt_utag_bytes = 1;
-
-	dt_utag = EV_CHAR_P(ev, p, q);
-	/* This will work for UTF-8, but not for UTF-16 - extra reminder here */
-#ifdef FILENAMES_16BIT 
-#error 16bit characters in filenames and dtrace in combination is not supported.
-#endif
-	while (EV_GET_CHAR(ev, &dt_tmp, &p, &q) && dt_tmp != '\0') {
-	    dt_utag_bytes++;
-	}
-#endif
-	if (ev->size < 1+4
-#ifdef USE_VM_PROBES
-	    + dt_utag_bytes
-#endif
-	    || !EV_GET_UINT32(ev, &n, &p, &q)) {
-	    /* Buffer too short to contain even the number of pos/size specs */
-	    reply_Uint_posix_error(desc, 0, EINVAL);
-	    goto done;
-	}
-	if (lseek_flush_read(desc, &err
-#ifdef USE_VM_PROBES
-			     , dt_priv, dt_utag
-#endif
-			     ) < 0) {
-	    reply_Uint_posix_error(desc, 0, err);
-	    goto done;
-	}
-	if (flush_write_check_error(desc, &err
-#ifdef USE_VM_PROBES
-				    , dt_priv, dt_utag
-#endif
-				    ) < 0) {
-	    reply_Uint_posix_error(desc, 0, err);
-	    goto done;
-	}
-	if (n == 0) {
-	    /* Trivial case - nothing to write */
-	    if (ev->size != 1+4) {
-		reply_posix_error(desc, err);
-	    } else {
-		reply_Uint(desc, 0);
-	    }
-	    goto done;
-	}
-	if (ev->size < 1+4+8*(2*n)
-#ifdef USE_VM_PROBES
-	    + dt_utag_bytes
-#endif
-	    ) {
-	    /* Buffer too short to contain even the pos/size specs */
-	    reply_Uint_posix_error(desc, 0, EINVAL);
-	    goto done;
-	}
-	d = EF_ALLOC(sizeof(struct t_data) 
-		     + (n * sizeof(struct t_pbuf_spec)));
-	if (! d) {
-	    reply_Uint_posix_error(desc, 0, ENOMEM);
-	    goto done;
-	}
-	d->command = command;
-	d->reply = !0;
-	d->fd = desc->fd;
-	d->flags = desc->flags;
-#ifdef USE_VM_PROBES
-	dt_i1 = d->fd;
-	dt_i2 = d->flags;
-#endif
-	d->c.pwritev.port = desc->port;
-	d->c.pwritev.q_mtx = desc->q_mtx;
-	d->c.pwritev.n = n;
-	d->c.pwritev.cnt = 0;
-	total = 0;
-	j = 0;
-	/* Create pos/size specs in the thread data structure
-	 * for all non-zero size binaries. Calculate total size.
-	 */
-	for(i = 0; i < n; i++) {
-	    Uint32 sizeH, sizeL;
-	    size_t size;
-	    if (   !EV_GET_SINT64(ev, &d->c.pwritev.specs[i].offset, &p, &q)
-		|| !EV_GET_UINT32(ev, &sizeH, &p, &q)
-		|| !EV_GET_UINT32(ev, &sizeL, &p, &q)) {
-		/* Misalignment in buffer */
-		reply_Uint_posix_error(desc, 0, EINVAL);
-		EF_FREE(d);
-		goto done;
-	    }
-#if SIZEOF_SIZE_T == 4
-	    if (sizeH != 0) {
-		reply_Uint_posix_error(desc, 0, EINVAL);
-		EF_FREE(d);
-		goto done;
-	    }
-	    size = sizeL;
-#else
-	    size = ((size_t)sizeH<<32) | sizeL;
-#endif
-	    if (size > 0) {
-		total += size;
-		d->c.pwritev.specs[j].size = size;
-		j++;
-	    }
-	}
-	d->c.pwritev.size = total;
-#ifdef USE_VM_PROBES
-	dt_i3 = d->c.pwritev.size;
-#endif
-	if (j == 0) {
-	    /* Trivial case - nothing to write */
-	    EF_FREE(d);
-	    reply_Uint(desc, 0);
-	} else {
-	    ErlDrvSizeT skip = 1 + 4 + 8 * (2*n) 
-#ifdef USE_VM_PROBES
-		+ dt_utag_bytes
-#endif
-		;
-	    if (skip + total != ev->size) {
-		/* Actual amount of data does not match 
-		 * total of all pos/size specs
-		 */
-		EF_FREE(d);
-		reply_Uint_posix_error(desc, 0, EINVAL);
-	    } else {
-		/* Enqueue the data */
-		MUTEX_LOCK(desc->q_mtx);
-		driver_enqv(desc->port, ev, skip);
-		MUTEX_UNLOCK(desc->q_mtx);
-		/* Execute the command */
-		d->invoke = invoke_pwritev;
-		d->free = free_data;
-		d->level = 1;
-		cq_enq(desc, d);
-	    }
-	}
-    } goto done; /* case FILE_PWRITEV: */
-
-    case FILE_PREADV: { /* Dtrace: The dtrace user tag is not last in message, 
-			   but follows the message tag directly. 
-			   This is handled specially in prim_file.erl */
-	register void * void_ptr;
-	Uint32 i, n;
-	ErlIOVec *res_ev;
-#ifdef USE_VM_PROBES
-	char dt_tmp;
-	int dt_utag_bytes = 1;
-	/* This will work for UTF-8, but not for UTF-16 - extra reminder here */
-#ifdef FILENAMES_16BIT 
-#error 16bit characters in filenames and dtrace in combination is not supported.
-#endif
-	dt_utag = EV_CHAR_P(ev, p, q);
-	while (EV_GET_CHAR(ev, &dt_tmp, &p, &q) && dt_tmp != '\0') {
-	    dt_utag_bytes++;
-	}
-#endif
-	if (lseek_flush_read(desc, &err
-#ifdef USE_VM_PROBES
-			     , dt_priv, dt_utag
-#endif
-			     ) < 0) {
-	    reply_posix_error(desc, err);
-	    goto done;
-	}
-	if (flush_write_check_error(desc, &err
-#ifdef USE_VM_PROBES
-				    , dt_priv, dt_utag
-#endif
-				    ) < 0) {
-	    reply_posix_error(desc, err);
-	    goto done;
-	}
-	if (ev->size < 1+8
-#ifdef USE_VM_PROBES
-	    + dt_utag_bytes
-#endif
-	    || !EV_GET_UINT32(ev, &n, &p, &q)
-	    || !EV_GET_UINT32(ev, &n, &p, &q)) {
-	    /* Buffer too short to contain even the number of pos/size specs */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-	if (ev->size < 1+8+8*(2*n)
-#ifdef USE_VM_PROBES
-	    + dt_utag_bytes
-#endif
-	    ) {
-	    /* Buffer wrong length to contain the pos/size specs */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-	/* Create the thread data structure with the contained ErlIOVec 
-	 * and corresponding binaries for the response 
-	 */
-	d = EF_ALLOC(sizeof(*d)
-		     + (n * sizeof(*d->c.preadv.offsets))
-		     + ((1+n) * (sizeof(*res_ev->iov)
-				 + sizeof(*res_ev->binv))));
-	if (! d) {
-	    reply_posix_error(desc, ENOMEM);
-	    goto done;
-	}
-	d->command = command;
-	d->reply = !0;
-	d->fd = desc->fd;
-	d->flags = desc->flags;
-#ifdef USE_VM_PROBES
-	dt_i1 = d->fd;
-	dt_i2 = d->flags;
-#endif
-	d->c.preadv.n = n;
-	d->c.preadv.cnt = 0;
-	d->c.preadv.size = 0;
-	res_ev = &d->c.preadv.eiov;
-	/* XXX possible alignment problems here for weird machines */
-	res_ev->vsize = 1+d->c.preadv.n;
-	res_ev->iov = void_ptr = &d->c.preadv.offsets[d->c.preadv.n];
-	res_ev->binv = void_ptr = &res_ev->iov[res_ev->vsize];
-	/* Read in the pos/size specs and allocate binaries for the results */
-	for (i = 1; i < 1+n; i++) {
-	    Uint32 sizeH, sizeL;
-	    size_t size;
-	    if (   !EV_GET_SINT64(ev, &d->c.preadv.offsets[i-1], &p, &q)
-		|| !EV_GET_UINT32(ev, &sizeH, &p, &q)
-		|| !EV_GET_UINT32(ev, &sizeL, &p, &q)) {
-		reply_posix_error(desc, EINVAL);
-		break;
-	    }
-#if SIZEOF_SIZE_T == 4
-	    if (sizeH != 0) {
-		reply_posix_error(desc, EINVAL);
-		break;
-	    }
-	    size = sizeL;
-#else
-	    size = ((size_t)sizeH<<32) | sizeL;
-#endif
-#ifdef USE_VM_PROBES
-	    dt_i3 += size;
-#endif
-	    if (! (res_ev->binv[i] = driver_alloc_binary(size))) {
-		reply_posix_error(desc, ENOMEM);
-		break;
-	    } else {
-		res_ev->iov[i].iov_len  = size;
-		res_ev->iov[i].iov_base = res_ev->binv[i]->orig_bytes;
-	    }
-	}
-	if (i < 1+n) {
-	    for (i--; i > 0; i--) {
-		driver_free_binary(res_ev->binv[i]);
-	    }
-	    EF_FREE(d);
-	    goto done;
-	}
-	/* Allocate the header binary (index 0) */
-	res_ev->binv[0] = driver_alloc_binary(4+4+8*n);
-	if (! res_ev->binv[0]) {
-	    reply_posix_error(desc, ENOMEM);
-	    for (i = 1; i < 1+n; i++) {
-		driver_free_binary(res_ev->binv[i]);
-	    }
-	    EF_FREE(d);
-	    goto done;
-	}
-	res_ev->iov[0].iov_len = 4+4+8*n;
-	res_ev->iov[0].iov_base = res_ev->binv[0]->orig_bytes;
-	/* Fill in the number of buffers in the header */
-	put_int32(0, res_ev->iov[0].iov_base);
-	put_int32(n, (char *)(res_ev->iov[0].iov_base) + 4);
-	/**/
-	res_ev->size = res_ev->iov[0].iov_len;
-	if (n == 0) {
-	    /* Trivial case - nothing to read */
-	    reply_ev(desc, FILE_RESP_LDATA, res_ev);
-	    free_preadv(d);
-	    goto done;
-	} else {
-	    d->invoke = invoke_preadv;
-	    d->free = free_preadv;
-	    d->level = 1;
-	    cq_enq(desc, d);
-	}
-    } goto done; /* case FILE_PREADV: */
-
-    case FILE_LSEEK: {
-	Sint64 offset;		/* Offset for seek */
-	Uint32 origin;		/* Origin of seek. */
-
-	if (ev->size < 1+8+4
-	    || !EV_GET_SINT64(ev, &offset, &p, &q)
-	    || !EV_GET_UINT32(ev, &origin, &p, &q)) {
-	    /* Wrong length of buffer to contain offset and origin */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-#ifdef USE_VM_PROBES
-	dt_utag = EV_CHAR_P(ev, p, q);
-#endif
-	if (lseek_flush_read(desc, &err
-#ifdef USE_VM_PROBES
-			     , dt_priv, dt_utag
-#endif
-			     ) < 0) {
-	    reply_posix_error(desc, err);
-	    goto done;
-	}
-	if (flush_write_check_error(desc, &err
-#ifdef USE_VM_PROBES
-				    , dt_priv, dt_utag
-#endif
-				    ) < 0) {
-	    reply_posix_error(desc, err);
-	    goto done;
-	}
-	if ((d = async_lseek(desc, &err, !0, offset, origin
-#ifdef USE_VM_PROBES
-			     , &dt_i1, &dt_i2, &dt_i3
-#endif
-			     )) == NULL) {
-	    reply_posix_error(desc, err);
-	    goto done;
-	}
-    } goto done;
-
-    case FILE_READ_FILE: {
-	char *filename;
-	if (ev->size < 1+1) {
-	    /* Buffer contains empty name */
-	    reply_posix_error(desc, ENOENT);
-	    goto done;
-	}
-#ifndef USE_VM_PROBES
-	/* In the dtrace case, the iov has an extra element, the dtrace utag - we will need 
-	   another test to see that
-	   the filename is in a single buffer: */
-	if (ev->size-1 != ev->iov[q].iov_len-p) {
-	    /* Name not in one single buffer */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-#else
-	if (((byte *)ev->iov[q].iov_base)[ev->iov[q].iov_len-1] != '\0') {
-	    /* Name not in one single buffer */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}	
-#endif
-	filename = EV_CHAR_P(ev, p, q);
-	d = EF_ALLOC(sizeof(struct t_data) -1 + FILENAME_BYTELEN(filename) + FILENAME_CHARSIZE);
-	if (! d) {
-	    reply_posix_error(desc, ENOMEM);
-	    goto done;
-	}
-	d->command = command;
-	d->reply = !0;
-	/* Copy name */
-	FILENAME_COPY(d->b, filename);
-#ifdef USE_VM_PROBES
-	{
-	    char dt_tmp;
-
-	    /* This will work for UTF-8, but not for UTF-16 - extra reminder here */
-#ifdef FILENAMES_16BIT 
-#error 16bit characters in filenames and dtrace in combination is not supported.
-#endif
-	    while (EV_GET_CHAR(ev, &dt_tmp, &p, &q) && dt_tmp != '\0') 
-		;
-	    dt_s1 = d->b;
-	    dt_utag = EV_CHAR_P(ev, p, q);
-	}
-#endif
-	d->c.read_file.binp = NULL;
-	d->invoke = invoke_read_file;
-	d->free = free_read_file;
-	d->level = 2;
-	cq_enq(desc, d);
-    } goto done;
-
-    case FILE_IPREAD: {
-	/* This operation cheets by using invoke_preadv() and free_preadv()
-	 * plus its own invoke_ipread. Therefore the result format is 
-	 * a bit awkward - the header binary contains one extra 64 bit
-	 * field that invoke_preadv() fortunately ignores,
-	 * and the first 64 bit field does not contain the number of 
-	 * data binaries which invoke_preadv() also ignores.
-	 */
-	register void * void_ptr;
-	char mode;
-	Sint64 hdr_offset;
-	Uint32 max_size;
-	ErlIOVec *res_ev;
-	int vsize;
-	if (! EV_GET_CHAR(ev, &mode, &p, &q)) {
-	    /* Empty command */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-	if (mode != IPREAD_S32BU_P32BU) {
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-	if (ev->size < 1+1+8+4
-	    || !EV_GET_SINT64(ev, &hdr_offset, &p, &q)
-	    || !EV_GET_UINT32(ev, &max_size, &p, &q)) {
-	    /* Buffer too short to contain 
-	     * the header offset and max size spec */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-#ifdef USE_VM_PROBES
-	dt_utag = EV_CHAR_P(ev, p, q);
-#endif
-	if (lseek_flush_read(desc, &err
-#ifdef USE_VM_PROBES
-			     , dt_priv, dt_utag
-#endif
-			     ) < 0) {
-	    reply_posix_error(desc, err);
-	    goto done;
-	}
-	if (flush_write_check_error(desc, &err
-#ifdef USE_VM_PROBES
-				    , dt_priv, dt_utag
-#endif
-				    ) < 0) {
-	    reply_posix_error(desc, err);
-	    goto done;
-	}
-	/* Create the thread data structure with the contained ErlIOVec 
-	 * and corresponding binaries for the response 
-	 */
-	vsize = 2;
-	d = EF_ALLOC(sizeof(*d) + 
-		     vsize*(sizeof(*res_ev->iov) + sizeof(*res_ev->binv)));
-	if (! d) {
-	    reply_posix_error(desc, ENOMEM);
-	    goto done;
-	}
-	d->command = command;
-	d->reply = !0;
-	d->fd = desc->fd;
-	d->flags = desc->flags;
-	d->c.preadv.offsets[0] = hdr_offset;
-	d->c.preadv.size = max_size;
-#ifdef USE_VM_PROBES
-	dt_i1 = d->fd;
-	dt_i2 = d->flags;
-	dt_i3 = d->c.preadv.offsets[0];
-	dt_i4 = d->c.preadv.size;
-#endif
-	res_ev = &d->c.preadv.eiov;
-	/* XXX possible alignment problems here for weird machines */
-	res_ev->iov = void_ptr = d + 1;
-	res_ev->binv = void_ptr = res_ev->iov + vsize;
-	res_ev->size = 0;
-	res_ev->vsize = 0;
-	d->invoke = invoke_ipread;
-	d->free = free_preadv;
-	d->level = 1;
-	cq_enq(desc, d);
-    } goto done; /* case FILE_IPREAD: */
-
-    case FILE_SETOPT: {
-	char opt;
-
-	if (ev->size < 1+1
-	    || !EV_GET_CHAR(ev, &opt, &p, &q)) {
-	    /* Buffer too short to contain even the option type */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-#ifdef USE_VM_PROBES
-	dt_i1 = opt;
-	dt_utag = EV_CHAR_P(ev, p, q);
-#endif
-	switch (opt) {
-	case FILE_OPT_DELAYED_WRITE: {
-	    Uint32 sizeH, sizeL, delayH, delayL;
-	    if (ev->size != 1+1+4*sizeof(Uint32)
-#ifdef USE_VM_PROBES
-		+ FILENAME_BYTELEN(dt_utag) + FILENAME_CHARSIZE
-#endif
-		|| !EV_GET_UINT32(ev, &sizeH, &p, &q)
-		|| !EV_GET_UINT32(ev, &sizeL, &p, &q)
-		|| !EV_GET_UINT32(ev, &delayH, &p, &q)
-		|| !EV_GET_UINT32(ev, &delayL, &p, &q)) {
-		/* Buffer has wrong length to contain the option values */
-		reply_posix_error(desc, EINVAL);
-		goto done;
-	    }
-#if SIZEOF_SIZE_T == 4
-	    if (sizeH != 0) {
-		reply_posix_error(desc, EINVAL);
-		goto done;
-	    }
-	    desc->write_bufsize = sizeL;
-#else
-	    desc->write_bufsize = ((size_t)sizeH << 32) | sizeL;
-#endif
-#if SIZEOF_LONG == 4
-	    if (delayH != 0) {
-		reply_posix_error(desc, EINVAL);
-		goto done;
-	    }
-	    desc->write_delay = delayL;
-#else
-	    desc->write_delay = ((unsigned long)delayH << 32) | delayL;
-#endif
-#ifdef USE_VM_PROBES
-	    dt_i2 = desc->write_delay;
-#endif
-	    TRACE_C('K');
-	    reply_ok(desc);
-	} goto done;
-	case FILE_OPT_READ_AHEAD: {
-	    Uint32 sizeH, sizeL;
-	    if (ev->size != 1+1+2*sizeof(Uint32)
-#ifdef USE_VM_PROBES
-		+ FILENAME_BYTELEN(dt_utag)+FILENAME_CHARSIZE
-#endif
-		|| !EV_GET_UINT32(ev, &sizeH, &p, &q)
-		|| !EV_GET_UINT32(ev, &sizeL, &p, &q)) {
-		/* Buffer has wrong length to contain the option values */
-		reply_posix_error(desc, EINVAL);
-		goto done;
-	    }
-#if SIZEOF_SIZE_T == 4
-	    if (sizeH != 0) {
-		reply_posix_error(desc, EINVAL);
-		goto done;
-	    }
-	    desc->read_bufsize = sizeL;
-#else
-	    desc->read_bufsize = ((size_t)sizeH << 32) | sizeL;
-#endif
-#ifdef USE_VM_PROBES
-	    dt_i2 = desc->read_bufsize;
-#endif
-	    TRACE_C('K');
-	    reply_ok(desc);
-	} goto done;
-	default:
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	} /* case FILE_OPT_DELAYED_WRITE: */
-    } ASSERT(0); goto done; /* case FILE_SETOPT: */
-
-    case FILE_SENDFILE: {
-
-#ifdef HAVE_SENDFILE
-        struct t_data *d;
-	Uint32 out_fd, offsetH, offsetL, hd_len, tl_len;
-	Uint64 nbytes;
-	char flags;
-
-	if (ev->size < 1 + 7 * sizeof(Uint32) + sizeof(char)
-		|| !EV_GET_UINT32(ev, &out_fd, &p, &q)
-		|| !EV_GET_CHAR(ev, &flags, &p, &q)
-		|| !EV_GET_UINT32(ev, &offsetH, &p, &q)
-		|| !EV_GET_UINT32(ev, &offsetL, &p, &q)
-		|| !EV_GET_UINT64(ev, &nbytes, &p, &q)
-		|| !EV_GET_UINT32(ev, &hd_len, &p, &q)
-		|| !EV_GET_UINT32(ev, &tl_len, &p, &q)) {
-	    /* Buffer has wrong length to contain all the needed values */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-
-	if (hd_len != 0 || tl_len != 0) {
-	    /* We do not allow header, trailers */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-
-	
-	if (flags & SENDFILE_FLGS_USE_THREADS && !THRDS_AVAILABLE) {
-	    /* We do not allow use_threads flag on a system where
-	       no threads are available. */
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-
-	d = EF_SAFE_ALLOC(sizeof(struct t_data));
-	d->fd = desc->fd;
-	d->command = command;
-	d->invoke = invoke_sendfile;
-	d->free = free_sendfile;
-	d->flags = flags;
-	d->level = 2;
-
-	d->c.sendfile.out_fd = (int) out_fd;
-	d->c.sendfile.written = 0;
-	d->c.sendfile.port = desc->port;
-	d->c.sendfile.q_mtx = desc->q_mtx;
-
-    #if SIZEOF_OFF_T == 4
-	if (offsetH != 0) {
-	    reply_posix_error(desc, EINVAL);
-	    goto done;
-	}
-	d->c.sendfile.offset = (off_t) offsetL;
-    #else
-	d->c.sendfile.offset = ((off_t) offsetH << 32) | offsetL;
-    #endif
-
-	d->c.sendfile.nbytes = nbytes;
-
-	if (USE_THRDS_FOR_SENDFILE(d)) {
-	    SET_BLOCKING(d->c.sendfile.out_fd);
-	} else {
-	    /**
-	     * Write a place holder to queue in order to force file_flush
-	     * to be called before the driver is closed.
-	     */
-	    char tmp[1] = "";
-	    MUTEX_LOCK(d->c.sendfile.q_mtx);
-	    if (driver_enq(d->c.sendfile.port, tmp, 1)) {
-	        MUTEX_UNLOCK(d->c.sendfile.q_mtx);
-		reply_posix_error(desc, ENOMEM);
-		goto done;
-	    }
-	    MUTEX_UNLOCK(d->c.sendfile.q_mtx);
-	}
-
-	cq_enq(desc, d);
-#else
-	reply_posix_error(desc, ENOTSUP);
-#endif
-	goto done;
-        } /* case FILE_SENDFILE: */
-
-    } /* switch(command) */
-
-    if (lseek_flush_read(desc, &err
-#ifdef USE_VM_PROBES
-			 , dt_priv, dt_utag
-#endif
-			 ) < 0) {
-	reply_posix_error(desc, err);
-	goto done;
-    }
-    if (flush_write_check_error(desc, &err
-#ifdef USE_VM_PROBES
-				, dt_priv, dt_utag
-#endif
-				) < 0) {
-	reply_posix_error(desc, err);
-	goto done;
-    } else {
-	/* Flatten buffer and send it to file_output(desc, buf, len) */
-	int len = ev->size;
-	char *buf = EF_ALLOC(len);
-	if (! buf) {
-	    reply_posix_error(desc, ENOMEM);
-	    goto done;
-	}
-	driver_vec_to_buf(ev, buf, len);
-	file_output((ErlDrvData) desc, buf, len);
-	EF_FREE(buf);
-	goto done;
-    }
-
- done:
-    if (d != NULL) {
-#ifdef USE_VM_PROBES
-	/*
-	 * If d == NULL, then either:
-	 *    1). There was an error of some sort, or
-	 *    2). The command given to us is actually implemented
-	 *	  by file_output() instead.
-	 *
-	 * Case #1 is probably a TODO item, perhaps?
-	 * Case #2 we definitely don't want to activate a probe.
-	 */
-	d->sched_i1 = dt_priv->thread_num;
-	d->sched_i2 = dt_priv->tag;
-	d->sched_utag[0] = '\0';
-	if (dt_utag != NULL) {
-	    if (dt_utag[0] == '\0') {
-                dt_utag = NULL;
-            } else {
-		strncpy(d->sched_utag, dt_utag, sizeof(d->sched_utag) - 1);
-		d->sched_utag[sizeof(d->sched_utag) - 1] = '\0';
-	    }
-	}
-	DTRACE11(efile_drv_entry, dt_priv->thread_num, dt_priv->tag++,
-		 dt_utag, command, dt_s1, NULL, dt_i1, dt_i2, dt_i3, dt_i4,
-		 desc->port_str);
-#endif
-    }
-    cq_execute(desc);
-}
-
-#ifdef  USE_VM_PROBES
-dt_private *
-get_dt_private(int base)
-{
-    dt_private *dt_priv = (dt_private *) pthread_getspecific(dt_driver_key);
-
-    if (dt_priv == NULL) {
-	dt_priv = EF_SAFE_ALLOC(sizeof(dt_private));
-	erts_mtx_lock(&dt_driver_mutex);
-	dt_priv->thread_num = (base + dt_driver_idnum++);
-	erts_mtx_unlock(&dt_driver_mutex);
-	dt_priv->tag = 0;
-	pthread_setspecific(dt_driver_key, dt_priv);
-    }
-    return dt_priv;
-}
-#endif  /* USE_VM_PROBES */
diff --git a/erts/emulator/drivers/common/erl_efile.h b/erts/emulator/drivers/common/erl_efile.h
deleted file mode 100644
index b7f063b4f2..0000000000
--- a/erts/emulator/drivers/common/erl_efile.h
+++ /dev/null
@@ -1,176 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 1997-2016. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-/*
- * Defines the interfaces between the generic efile driver and its
- * operating-system dependent helpers.
- */
-
-#include "sys.h"
-#include "erl_driver.h"
-
-/*
- * Open modes for efile_openfile().
- */
-#define EFILE_MODE_READ 1
-#define EFILE_MODE_WRITE 2	/* Implies truncating file when used alone. */
-#define EFILE_MODE_READ_WRITE 	3
-#define EFILE_MODE_APPEND	4
-#define EFILE_COMPRESSED 	8
-#define EFILE_MODE_EXCL        16
-#define EFILE_NO_TRUNCATE      32 /* Special for reopening on VxWorks */
-#define EFILE_MODE_SYNC        64
-
-/*
- * Seek modes for efile_seek().
- */
-#define	EFILE_SEEK_SET	0
-#define	EFILE_SEEK_CUR	1
-#define	EFILE_SEEK_END	2
-
-/*
- * File types returned by efile_fileinfo().
- */
-#define FT_DEVICE 	1
-#define FT_DIRECTORY 	2
-#define FT_REGULAR	3
-#define FT_SYMLINK	4
-#define FT_OTHER	5
-
-/*
- * Access attributes returned by efile_fileinfo() (the bits can be ORed
- * together).
- */
-#define FA_NONE    	0
-#define FA_WRITE 	1
-#define FA_READ		2
-
-/* Some OS'es (i.e. Windows) has filenames in wide charaqcters. That requires special handling */
-/* Note that we do *not* honor alignment in the communication to the OS specific driver, */
-/* which is not a problem on x86, but might be on other platforms. The OS specific efile */
-/* implementation is expected to align if needed */
-#ifdef __WIN32__
-#define FILENAMES_16BIT 1
-#endif
-
-/* We use sendfilev if it exist on solaris */
-#if !defined(HAVE_SENDFILE) && defined(HAVE_SENDFILEV)
-#define HAVE_SENDFILE
-#endif
-
-/*
- * An handle to an open directory.  To be cast to the correct type
- * in the system-dependent directory functions.
- */
-
-typedef struct _Efile_Dir_Handle* EFILE_DIR_HANDLE;
-
-/*
- * Error information from the last call.
- */  
-typedef struct _Efile_error {
-    int posix_errno;		/* Posix error number, as in <errno.h>. */
-    int os_errno;		/* Os-dependent error number (not used). */
-} Efile_error;
-
-/*
- * Describes what is returned by file:file_info/1.
- */
-
-typedef struct _Efile_info {
-    Uint32 size_low;		/* Size of file, lower 32 bits.. */
-    Uint32 size_high;		/* Size of file, higher 32 bits. */
-    Uint32 type;		/* Type of file -- one of FT_*. */
-    Uint32 access;		/* Access to file -- one of FA_*. */
-    Uint32 mode;		/* Access permissions -- bit field. */
-    Uint32 links;		/* Number of links to file. */
-    Uint32 major_device;	/* Major device or file system. */
-    Uint32 minor_device;	/* Minor device (for devices). */
-    Uint32 inode;		/* Inode number. */
-    Uint32 uid;			/* User id of owner. */
-    Uint32 gid;			/* Group id of owner. */
-    Sint64 accessTime;		/* Last time the file was accessed. */
-    Sint64 modifyTime;		/* Last time the file was modified. */
-    Sint64 cTime;		/* Creation time (Windows) or last
-				 * inode change (Unix).
-				 */
-} Efile_info;
-
-
-#ifdef HAVE_SENDFILE
-/*
- * Describes the structure of headers/trailers for sendfile
- */
-struct t_sendfile_hdtl {
-    SysIOVec *headers;
-    int hdr_cnt;
-    SysIOVec *trailers;
-    int trl_cnt;
-};
-#endif /* HAVE_SENDFILE */
-
-/*
- * Functions.
- */
-int efile_init(void);
-int efile_mkdir(Efile_error* errInfo, char* name);
-int efile_rmdir(Efile_error* errInfo, char* name);
-int efile_delete_file(Efile_error* errInfo, char* name);
-int efile_rename(Efile_error* errInfo, char* src, char* dst);
-int efile_chdir(Efile_error* errInfo, char* name);
-int efile_getdcwd(Efile_error* errInfo, int drive,
-		  char* buffer, size_t size);
-int efile_readdir(Efile_error* errInfo, char* name, 
-		  EFILE_DIR_HANDLE* dir_handle,
-		  char* buffer, size_t *size);
-int efile_openfile(Efile_error* errInfo, char* name, int flags,
-		   int* pfd, Sint64* pSize);
-void efile_closefile(int fd);
-int efile_fdatasync(Efile_error* errInfo, int fd);
-int efile_fsync(Efile_error* errInfo, int fd);
-int efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo,
-		   char *name, int info_for_link);
-int efile_write_info(Efile_error* errInfo, Efile_info* pInfo, char *name);
-int efile_write(Efile_error* errInfo, int flags, int fd, 
-		char* buf, size_t count);
-int efile_writev(Efile_error* errInfo, int flags, int fd, 
-		 SysIOVec* iov, int iovcnt);
-int efile_read(Efile_error* errInfo, int flags, int fd, 
-	       char* buf, size_t count, size_t* pBytesRead);
-int efile_seek(Efile_error* errInfo, int fd, 
-	       Sint64 offset, int origin, Sint64* new_location);
-int efile_truncate_file(Efile_error* errInfo, int *fd, int flags);
-int efile_pwrite(Efile_error* errInfo, int fd, 
-		 char* buf, size_t count, Sint64 offset);
-int efile_pread(Efile_error* errInfo, int fd, 
-		Sint64 offset, char* buf, size_t count, size_t* pBytesRead);
-int efile_readlink(Efile_error* errInfo, char *name, 
-		   char* buffer, size_t size);
-int efile_altname(Efile_error* errInfo, char *name, 
-		  char* buffer, size_t size);
-int efile_link(Efile_error* errInfo, char* old, char* new);
-int efile_symlink(Efile_error* errInfo, char* old, char* new);
-int efile_may_openfile(Efile_error* errInfo, char *name);
-int efile_fadvise(Efile_error* errInfo, int fd, Sint64 offset, Sint64 length,
-		  int advise);
-#ifdef HAVE_SENDFILE
-int efile_sendfile(Efile_error* errInfo, int in_fd, int out_fd,
-		      off_t *offset, Uint64 *nbytes, struct t_sendfile_hdtl *hdtl);
-#endif /* HAVE_SENDFILE */
-int efile_fallocate(Efile_error* errInfo, int fd, Sint64 offset, Sint64 length);
diff --git a/erts/emulator/drivers/common/gzio.c b/erts/emulator/drivers/common/gzio.c
index f60c781894..86c3b07cea 100644
--- a/erts/emulator/drivers/common/gzio.c
+++ b/erts/emulator/drivers/common/gzio.c
@@ -19,726 +19,16 @@
 #include <unistd.h>
 #endif
 #include <ctype.h>
+
 #include "erl_driver.h"
-#include "erl_efile.h"
 #include "sys.h"
 
-#ifdef __WIN32__
-#ifndef HAVE_CONFLICTING_FREAD_DECLARATION
-#define HAVE_CONFLICTING_FREAD_DECLARATION
-#endif
-#define FILENAMES_16BIT 1
-#endif
-
-#ifdef STDC
-#  define zstrerror(errnum) strerror(errnum)
-#else
-#  define zstrerror(errnum) ""
-#endif
-
 #include "gzio_zutil.h"
 #include "erl_zlib.h"
 #include "gzio.h"
 
-/********struct internal_state {int dummy;}; / * for buggy compilers */
-
-#define Z_BUFSIZE 4096
-
-#define ALLOC(size) driver_alloc(size)
-#define TRYFREE(p) {if (p) driver_free(p);}
-
 static int gz_magic[2] = {0x1f, 0x8b}; /* gzip magic header */
 
-/* gzip flag byte */
-#define ASCII_FLAG   0x01 /* bit 0 set: file probably ascii text */
-#define HEAD_CRC     0x02 /* bit 1 set: header CRC present */
-#define EXTRA_FIELD  0x04 /* bit 2 set: extra field present */
-#define ORIG_NAME    0x08 /* bit 3 set: original file name present */
-#define COMMENT      0x10 /* bit 4 set: file comment present */
-#define RESERVED     0xE0 /* bits 5..7: reserved */
-
-typedef struct gz_stream {
-    z_stream stream;
-    int      z_err;   /* error code for last stream operation */
-    int      z_eof;   /* set if end of input file */
-#ifdef UNIX
-    int      file;    /* .gz file descriptor */
-#else
-    FILE     *file;   /* .gz file */
-#endif
-    Byte     *inbuf;  /* input buffer */
-    Byte     *outbuf; /* output buffer */
-    uLong    crc;     /* crc32 of uncompressed data */
-    char     *msg;    /* error message */
-    char     *path;   /* path name for debugging only */
-    int      transparent; /* 1 if input file is not a .gz file */
-    char     mode;    /* 'w' or 'r' */
-    int      position; /* Position (for seek) */
-    int (*destroy)(struct gz_stream*); /* Function to destroy
-					    *  this structure. */
-} gz_stream;
-
-local ErtsGzFile gz_open      (const char *path, const char *mode);
-local int    get_byte     (gz_stream *s);
-local void   check_header (gz_stream *s);
-local int    destroy      (gz_stream *s);
-local uLong  getLong      (gz_stream *s);
-
-#ifdef UNIX
-/*
- * In Solaris 8 and earlier, fopen() and its friends cannot handle 
- * file descriptors larger than 255. Therefore, we use read()/write()
- * on all Unix systems.
- */
-# define ERTS_GZWRITE(File, Buf, Count) write((File), (Buf), (Count))
-# define ERTS_GZREAD(File, Buf, Count) read((File), (Buf), (Count))
-#else
-/*
- * On all other operating systems, using fopen(), fread()/fwrite(), since
- * there is not guaranteed to exist any read()/write() (not part of
- * ANSI/ISO-C).
- */
-# define ERTS_GZWRITE(File, Buf, Count) fwrite((Buf), 1, (Count), (File))
-# define ERTS_GZREAD(File, Buf, Count) fread((Buf), 1, (Count), (File))
-#endif
-
-/*
- * Ripped from efile_drv.c
- */
-
-#ifdef FILENAMES_16BIT
-#  define FILENAME_BYTELEN(Str) filename_len_16bit(Str)
-#  define FILENAME_COPY(To,From) filename_cpy_16bit((To),(From)) 
-#  define FILENAME_CHARSIZE 2
-
-   static int filename_len_16bit(const char *str) 
-   {
-       const char *p = str;
-       while(*p != '\0' || p[1] != '\0') {
-	   p += 2;
-       }
-       return (p - str);
-   }
-
-   static void filename_cpy_16bit(char *to, const char *from) 
-   {
-       while(*from != '\0' || from[1] != '\0') {
-	   *to++ = *from++;
-	   *to++ = *from++;
-       }
-       *to++ = *from++;
-       *to++ = *from++;
-   }
-
-#else
-#  define FILENAME_BYTELEN(Str) strlen(Str)
-#  define FILENAME_COPY(To,From) strcpy(To,From) 
-#  define FILENAME_CHARSIZE 1
-#endif
-
-/* ===========================================================================
-     Opens a gzip (.gz) file for reading or writing. The mode parameter
-   is as in fopen ("rb" or "wb"). The file is given either by file descriptor
-   or path name (if fd == -1).
-     gz_open return NULL if the file could not be opened or if there was
-   insufficient memory to allocate the (de)compression state; errno
-   can be checked to distinguish the two cases (if errno is zero, the
-   zlib error is Z_MEM_ERROR).
-*/
-local ErtsGzFile gz_open (path, mode)
-    const char *path;
-    const char *mode;
-{
-    int err;
-    int level = Z_DEFAULT_COMPRESSION; /* compression level */
-    char *p = (char*)mode;
-    gz_stream *s;
-    char fmode[80]; /* copy of mode, without the compression level */
-    char *m = fmode;
-
-    if (!path || !mode) return Z_NULL;
-
-    s = (gz_stream *)ALLOC(sizeof(gz_stream));
-    if (!s) return Z_NULL;
-
-    erl_zlib_alloc_init(&s->stream);
-    s->stream.next_in = s->inbuf = Z_NULL;
-    s->stream.next_out = s->outbuf = Z_NULL;
-    s->stream.avail_in = s->stream.avail_out = 0;
-#ifdef UNIX
-    s->file = -1;
-#else
-    s->file = NULL;
-#endif
-    s->z_err = Z_OK;
-    s->z_eof = 0;
-    s->crc = crc32(0L, Z_NULL, 0);
-    s->msg = NULL;
-    s->transparent = 0;
-    s->position = 0;
-    s->destroy = destroy;
-
-    s->path = (char*)ALLOC(FILENAME_BYTELEN(path)+FILENAME_CHARSIZE);
-    if (s->path == NULL) {
-        return s->destroy(s), (ErtsGzFile)Z_NULL;
-    }
-    FILENAME_COPY(s->path, path); /* do this early for debugging */
-
-    s->mode = '\0';
-    do {
-        if (*p == 'r')
-	    s->mode = 'r';
-	if (*p == 'w' || *p == 'a')
-	    s->mode = 'w';
-	if (isdigit((int)*p)) {
-	    level = *p - '0';
-	} else {
-	    *m++ = *p;		/* Copy the mode */
-	}
-    } while (*p++ && m < fmode + sizeof(fmode) - 1);
-    *m = '\0';
-    if (s->mode == '\0')
-	return s->destroy(s), (ErtsGzFile)Z_NULL;
-    
-    if (s->mode == 'w') {
-        err = deflateInit2(&(s->stream), level,
-                           Z_DEFLATED, MAX_WBITS+16, DEF_MEM_LEVEL, 0);
-        /* windowBits is passed < 0 to suppress zlib header */
-
-        s->stream.next_out = s->outbuf = (Byte*)ALLOC(Z_BUFSIZE);
-
-        if (err != Z_OK || s->outbuf == Z_NULL) {
-            return s->destroy(s), (ErtsGzFile)Z_NULL;
-        }
-    } else {
-	/*
-	 * It is tempting to use the built-in support in zlib
-	 * for handling GZIP headers, but unfortunately it
-	 * cannot handle multiple GZIP headers (which occur when
-	 * several GZIP files have been concatenated).
-	 */
-
-	err = inflateInit2(&(s->stream), -MAX_WBITS);
-        s->stream.next_in  = s->inbuf = (Byte*)ALLOC(Z_BUFSIZE);
-
-        if (err != Z_OK || s->inbuf == Z_NULL) {
-            return s->destroy(s), (ErtsGzFile)Z_NULL;
-        }
-    }
-    s->stream.avail_out = Z_BUFSIZE;
-
-    errno = 0;
-#if defined(FILENAMES_16BIT)
-    {
-	FILE* efile_wfopen(const WCHAR* name, const WCHAR* mode);
-	WCHAR wfmode[80];
-	int i = 0;
-	int j;
-	for(j = 0; fmode[j] != '\0'; ++j) {
-	    wfmode[i++] = (WCHAR) fmode[j];
-	}
-	wfmode[i++] = L'\0';
-	s->file = efile_wfopen((WCHAR *)path, wfmode);
-	if (s->file == NULL) {
-	    return s->destroy(s), (ErtsGzFile)Z_NULL;
-	}
-    }
-#elif defined(UNIX)
-    if (s->mode == 'r') {
-	s->file = open(path, O_RDONLY);
-    } else {
-	s->file = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0666);
-    }
-    if (s->file == -1) {
-        return s->destroy(s), (ErtsGzFile)Z_NULL;
-    }
-#else
-    s->file = fopen(path, fmode);
-    if (s->file == NULL) {
-        return s->destroy(s), (ErtsGzFile)Z_NULL;
-    }
-#endif
-    if (s->mode == 'r') {
-	check_header(s); /* skip the .gz header */
-    }
-    return (ErtsGzFile)s;
-}
-
-/* ===========================================================================
-   Rewind a gzfile back to the beginning.
-*/
-
-local int gz_rewind (gz_stream *s)
-{
-    TRYFREE(s->msg);
-
-#ifdef UNIX
-    lseek(s->file, 0L, SEEK_SET);
-#else
-    fseek(s->file, 0L, SEEK_SET);
-#endif
-    inflateReset(&(s->stream));
-    s->stream.next_in = Z_NULL;
-    s->stream.next_out = Z_NULL;
-    s->stream.avail_in = s->stream.avail_out = 0;
-    s->z_err = Z_OK;
-    s->z_eof = 0;
-    s->crc = crc32(0L, Z_NULL, 0);
-    s->msg = NULL;
-    s->position = 0;
-    s->stream.next_in = s->inbuf;
-
-    s->stream.avail_out = Z_BUFSIZE;
-
-    check_header(s);		/* skip the .gz header */
-    return 1;
-}
-
-/* ===========================================================================
-     Opens a gzip (.gz) file for reading or writing.
-*/
-ErtsGzFile erts_gzopen (path, mode)
-    const char *path;
-    const char *mode;
-{
-    return gz_open (path, mode);
-}
-
-
-/* ===========================================================================
-     Read a byte from a gz_stream; update next_in and avail_in. Return EOF
-   for end of file.
-   IN assertion: the stream s has been successfully opened for reading.
-*/
-local int get_byte(s)
-    gz_stream *s;
-{
-    if (s->z_eof) return EOF;
-    if (s->stream.avail_in == 0) {
-#ifdef UNIX
-	ssize_t res;
-	errno = 0;
-	res = ERTS_GZREAD(s->file, s->inbuf, Z_BUFSIZE);
-	if (res == 0) {
-	    s->stream.avail_in = 0;
-	    s->z_eof = 1;
-	    return EOF;
-	} else if (res < 0) {
-	    s->stream.avail_in = 0;
-	    s->z_eof = 1;
-	    s->z_err = Z_ERRNO;
-	    return EOF;
-	} else {
-	    s->stream.avail_in = (uInt) res;
-	}
-#else
-	errno = 0;
-	s->stream.avail_in = ERTS_GZREAD(s->file, s->inbuf, Z_BUFSIZE);
-	if (s->stream.avail_in == 0) {
-	    s->z_eof = 1;
-	    if (s->file && ferror(s->file))
-		s->z_err = Z_ERRNO;
-	    return EOF;
-	}
-#endif
-	s->stream.next_in = s->inbuf;
-    }
-    s->stream.avail_in--;
-    return *(s->stream.next_in)++;
-}
-
-/* ===========================================================================
-      Check the gzip header of a gz_stream opened for reading. Set the stream
-    mode to transparent if the gzip magic header is not present; set s->err
-    to Z_DATA_ERROR if the magic header is present but the rest of the header
-    is incorrect.
-    IN assertion: the stream s has already been created sucessfully;
-       s->stream.avail_in is zero for the first time, but may be non-zero
-       for concatenated .gz files.
-*/
-local void check_header(s)
-    gz_stream *s;
-{
-    int method; /* method byte */
-    int flags;  /* flags byte */
-    uInt len;
-    int c;
-
-    /* Check the gzip magic header */
-    for (len = 0; len < 2; len++) {
-	c = get_byte(s);
-	if (c != gz_magic[len]) {
-	    if (len != 0) s->stream.avail_in++, s->stream.next_in--;
-	    if (c != EOF) {
-		s->stream.avail_in++, s->stream.next_in--;
-		s->transparent = 1;
-	    }
-	    s->z_err = s->stream.avail_in != 0 ? Z_OK : Z_STREAM_END;
-	    return;
-	}
-    }
-    method = get_byte(s);
-    flags = get_byte(s);
-    if (method != Z_DEFLATED || (flags & RESERVED) != 0) {
-	s->z_err = Z_DATA_ERROR;
-	return;
-    }
-
-    /* Discard time, xflags and OS code: */
-    for (len = 0; len < 6; len++) (void)get_byte(s);
-
-    if ((flags & EXTRA_FIELD) != 0) { /* skip the extra field */
-	len  =  (uInt)get_byte(s);
-	len += ((uInt)get_byte(s))<<8;
-	/* len is garbage if EOF but the loop below will quit anyway */
-	while (len-- != 0 && get_byte(s) != EOF) ;
-    }
-    if ((flags & ORIG_NAME) != 0) { /* skip the original file name */
-	while ((c = get_byte(s)) != 0 && c != EOF) ;
-    }
-    if ((flags & COMMENT) != 0) {   /* skip the .gz file comment */
-	while ((c = get_byte(s)) != 0 && c != EOF) ;
-    }
-    if ((flags & HEAD_CRC) != 0) {  /* skip the header crc */
-	for (len = 0; len < 2; len++) (void)get_byte(s);
-    }
-    s->z_err = s->z_eof ? Z_DATA_ERROR : Z_OK;
-}
-
- /* ===========================================================================
- * Cleanup then free the given gz_stream. Return a zlib error code.
-   Try freeing in the reverse order of allocations.
- */
-local int destroy (s)
-    gz_stream *s;
-{
-    int err = Z_OK;
-
-    if (!s) return Z_STREAM_ERROR;
-
-    TRYFREE(s->msg);
-
-    if (s->stream.state != NULL) {
-       if (s->mode == 'w') {
-           err = deflateEnd(&(s->stream));
-       } else if (s->mode == 'r') {
-           err = inflateEnd(&(s->stream));
-       }
-    }
-#ifdef UNIX
-    if (s->file != -1 && close(s->file)) {
-        err = Z_ERRNO;
-    }
-#else
-    if (s->file != NULL && fclose(s->file)) {
-        err = Z_ERRNO;
-    }
-#endif
-    if (s->z_err < 0) err = s->z_err;
-
-    TRYFREE(s->inbuf);
-    TRYFREE(s->outbuf);
-    TRYFREE(s->path);
-    TRYFREE(s);
-    return err;
-}
-
-/* ===========================================================================
-     Reads the given number of uncompressed bytes from the compressed file.
-   gzread returns the number of bytes actually read (0 for end of file).
-*/
-int
-erts_gzread(ErtsGzFile file, voidp buf, unsigned len)
-{
-    gz_stream *s = (gz_stream*)file;
-    Bytef *start = buf; /* starting point for crc computation */
-    Byte  *next_out; /* == stream.next_out but not forced far (for MSDOS) */
-
-    if (s == NULL || s->mode != 'r') return Z_STREAM_ERROR;
-
-    if (s->z_err == Z_DATA_ERROR || s->z_err == Z_ERRNO) return -1;
-    if (s->z_err == Z_STREAM_END) return 0;  /* EOF */
-
-    s->stream.next_out = next_out = buf;
-    s->stream.avail_out = len;
-
-    while (s->stream.avail_out != 0) {
-
-	if (s->transparent) {
-	    /* Copy first the lookahead bytes: */
-	    uInt n = s->stream.avail_in;
-	    if (n > s->stream.avail_out) n = s->stream.avail_out;
-	    if (n > 0) {
-		zmemcpy(s->stream.next_out, s->stream.next_in, n);
-		next_out += n;
-		s->stream.next_out = next_out;
-		s->stream.next_in   += n;
-		s->stream.avail_out -= n;
-		s->stream.avail_in  -= n;
-	    }
-	    if (s->stream.avail_out > 0) {
-		s->stream.avail_out -= ERTS_GZREAD(s->file, next_out,
-						   s->stream.avail_out);
-	    }
-	    len -= s->stream.avail_out;
-	    s->stream.total_in  += (uLong)len;
-	    s->stream.total_out += (uLong)len;
-            if (len == 0) s->z_eof = 1;
-	    s->position += (int)len;
-	    return (int)len;
-	}
-        if (s->stream.avail_in == 0 && !s->z_eof) {
-#ifdef UNIX
-	    ssize_t res;
-	    errno = 0;
-	    res = ERTS_GZREAD(s->file, s->inbuf, Z_BUFSIZE);
-	    if (res == 0) {
-		s->stream.avail_in = 0;
-		s->z_eof = 1;
-		return EOF;
-	    } else if (res < 0) {
-		s->stream.avail_in = 0;
-		s->z_eof = 1;
-		s->z_err = Z_ERRNO;
-		return EOF;
-	    } else {
-		s->stream.avail_in = (uInt) res;
-	    }
-#else
-	    errno = 0;
-            s->stream.avail_in = ERTS_GZREAD(s->file, s->inbuf, Z_BUFSIZE);
-            if (s->stream.avail_in == 0) {
-                s->z_eof = 1;
-		if (s->file && ferror(s->file)) {
-		    s->z_err = Z_ERRNO;
-		    break;
-		}
-            }
-#endif
-            s->stream.next_in = s->inbuf;
-        }
-        s->z_err = inflate(&(s->stream), Z_NO_FLUSH);
-
-	if (s->z_err == Z_STREAM_END) {
-	    /* Check CRC and original size */
-	    s->crc = crc32(s->crc, start, (uInt)(s->stream.next_out - start));
-	    start = s->stream.next_out;
-
-	    if (getLong(s) != s->crc) {
-		s->z_err = Z_DATA_ERROR;
-	    } else {
-	        (void)getLong(s);
-                /* The uncompressed length returned by above getlong() may
-                 * be different from s->stream.total_out) in case of
-		 * concatenated .gz files. Check for such files:
-		 */
-		check_header(s);
-		if (s->z_err == Z_OK) {
-		    uLong total_in = s->stream.total_in;
-		    uLong total_out = s->stream.total_out;
-
-		    inflateReset(&(s->stream));
-		    s->stream.total_in = total_in;
-		    s->stream.total_out = total_out;
-		    s->crc = crc32(0L, Z_NULL, 0);
-		}
-	    }
-	}
-	if (s->z_err != Z_OK || s->z_eof) break;
-    }
-    s->crc = crc32(s->crc, start, (uInt)(s->stream.next_out - start));
-
-    s->position += (int)(len - s->stream.avail_out);
-
-    return (int)(len - s->stream.avail_out);
-}
-
-/* ===========================================================================
-     Writes the given number of uncompressed bytes into the compressed file.
-   gzwrite returns the number of bytes actually written (0 in case of error).
-*/
-int
-erts_gzwrite(ErtsGzFile file, voidp buf, unsigned len)
-{
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;
-
-    s->stream.next_in = buf;
-    s->stream.avail_in = len;
-
-    while (s->stream.avail_in != 0) {
-
-        if (s->stream.avail_out == 0) {
-
-            s->stream.next_out = s->outbuf;
-            if (ERTS_GZWRITE(s->file, s->outbuf, Z_BUFSIZE) != Z_BUFSIZE) {
-                s->z_err = Z_ERRNO;
-                break;
-            }
-            s->stream.avail_out = Z_BUFSIZE;
-        }
-        s->z_err = deflate(&(s->stream), Z_NO_FLUSH);
-        if (s->z_err != Z_OK) break;
-    }
-    s->position += (int)(len - s->stream.avail_in);
-    return (int)(len - s->stream.avail_in);
-}
-
-/*
- * For use by Erlang file driver.
- *
- * XXX Limitations:
- *  - SEEK_END is not allowed (length of file is not known).
- *  - When writing, only forward seek is supported.
- */
-
-int
-erts_gzseek(ErtsGzFile file, int offset, int whence)
-{
-    int pos;
-    gz_stream* s = (gz_stream *) file;
-
-    switch (whence) {
-    case EFILE_SEEK_SET: whence = SEEK_SET; break;
-    case EFILE_SEEK_CUR: whence = SEEK_CUR; break;
-    case EFILE_SEEK_END: whence = SEEK_END; break;
-    default:
-	errno = EINVAL;
-	return -1;
-    }
-
-    if (s == NULL) {
-	errno = EINVAL;
-	return -1;
-    }
-    if (s->z_err == Z_DATA_ERROR || s->z_err == Z_ERRNO) {
-	errno = EIO;
-	return -1;
-    }
-
-    switch (whence) {
-    case SEEK_SET: pos = offset; break;
-    case SEEK_CUR: pos = s->position+offset; break;
-    case SEEK_END: 
-    default:
-      errno = EINVAL; return -1;
-    }
-
-    if (pos == s->position) {
-	return pos;
-    }
-
-    if (pos < s->position) {
-	if (s->mode == 'w') {
-	    errno = EINVAL;
-	    return -1;
-	}
-	gz_rewind(s);
-    }
-
-    while (s->position < pos) {
-	char buf[512];
-	int n;
-	int save_pos = s->position;
-
-	n = pos - s->position;
-	if (n > sizeof(buf))
-	    n = sizeof(buf);
-
-	if (s->mode == 'r') {
-	    erts_gzread(file, buf, n);
-	} else {
-	    memset(buf, '\0', n);
-	    erts_gzwrite(file, buf, n);
-	}
-	if (save_pos == s->position) break;
-    }
-
-    return s->position;
-}
-
-/* ===========================================================================
-     Flushes all pending output into the compressed file. The parameter
-   flush is as in the deflate() function.
-     gzflush should be called only when strictly necessary because it can
-   degrade compression.
-*/
-int
-erts_gzflush(ErtsGzFile file, int flush)
-{
-    uInt len;
-    int done = 0;
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;
-
-    s->stream.avail_in = 0; /* should be zero already anyway */
-
-    for (;;) {
-        len = Z_BUFSIZE - s->stream.avail_out;
-
-        if (len != 0) {
-            if ((uInt)ERTS_GZWRITE(s->file, s->outbuf, len) != len) {
-                s->z_err = Z_ERRNO;
-                return Z_ERRNO;
-            }
-            s->stream.next_out = s->outbuf;
-            s->stream.avail_out = Z_BUFSIZE;
-        }
-        if (done) break;
-        s->z_err = deflate(&(s->stream), flush);
-
-        /* deflate has finished flushing only when it hasn't used up
-         * all the available space in the output buffer: 
-         */
-        done = (s->stream.avail_out != 0 || s->z_err == Z_STREAM_END);
- 
-        if (s->z_err != Z_OK && s->z_err != Z_STREAM_END) break;
-    }
-#ifndef UNIX
-    fflush(s->file);
-#endif
-    return  s->z_err == Z_STREAM_END ? Z_OK : s->z_err;
-}
-
-/* ===========================================================================
-   Reads a long in LSB order from the given gz_stream. Sets 
-*/
-local uLong getLong (s)
-    gz_stream *s;
-{
-    uLong x = (uLong)get_byte(s);
-    int c;
-
-    x += ((uLong)get_byte(s))<<8;
-    x += ((uLong)get_byte(s))<<16;
-    c = get_byte(s);
-    if (c == EOF) s->z_err = Z_DATA_ERROR;
-    x += ((uLong)c)<<24;
-    return x;
-}
-
-/* ===========================================================================
-     Flushes all pending output if necessary, closes the compressed file
-   and deallocates all the (de)compression state.
-*/
-int
-erts_gzclose(ErtsGzFile file)
-{
-    int err;
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL) return Z_STREAM_ERROR;
-
-    if (s->mode == 'w') {
-        err = erts_gzflush (file, Z_FINISH);
-        if (err != Z_OK) return s->destroy(s);
-    }
-    return s->destroy(s);
-}
-
-
 /* ===========================================================================
    Uncompresses the buffer given and returns a pointer to a binary.
    If the buffer was not compressed with gzip, the buffer contents
diff --git a/erts/emulator/drivers/common/gzio.h b/erts/emulator/drivers/common/gzio.h
index ee0ebe7bd8..e331b5208b 100644
--- a/erts/emulator/drivers/common/gzio.h
+++ b/erts/emulator/drivers/common/gzio.h
@@ -20,13 +20,5 @@
 
 #include "zlib.h"
 
-typedef struct erts_gzFile* ErtsGzFile;
-
-ErtsGzFile erts_gzopen (const char *path, const char *mode);
-int erts_gzread(ErtsGzFile file, voidp buf, unsigned len);
-int erts_gzwrite(ErtsGzFile file, voidp buf, unsigned len);
-int erts_gzseek(ErtsGzFile, int, int);
-int erts_gzflush(ErtsGzFile file, int flush);
-int erts_gzclose(ErtsGzFile file);
 ErlDrvBinary* erts_gzinflate_buffer(char*, uLong);
 ErlDrvBinary* erts_gzdeflate_buffer(char*, uLong);
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index 7b1f4a0e9c..4294fb4f46 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -63,6 +63,20 @@
 #include <sys/un.h>
 #endif
 
+#ifdef HAVE_SENDFILE
+#if defined(__linux__) || (defined(__sun) && defined(__SVR4))
+    #include <sys/sendfile.h>
+#elif defined(__FreeBSD__) || defined(__DragonFly__)
+    /* Need to define __BSD_VISIBLE in order to expose prototype of sendfile */
+    #define __BSD_VISIBLE 1
+    #include <sys/socket.h>
+#endif
+#endif
+
+#if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__)
+    #define __DARWIN__ 1
+#endif
+
 /* All platforms fail on malloc errors. */
 #define FATAL_MALLOC
 
@@ -701,6 +715,7 @@ static size_t my_strnlen(const char *s, size_t maxlen)
 #define TCP_REQ_RECV           42
 #define TCP_REQ_UNRECV         43
 #define TCP_REQ_SHUTDOWN       44
+#define TCP_REQ_SENDFILE       45
 /* UDP and SCTP requests */
 #define PACKET_REQ_RECV        60 /* Common for UDP and SCTP         */
 /* #define SCTP_REQ_LISTEN       61 MERGED Different from TCP; not for UDP */
@@ -723,6 +738,7 @@ static size_t my_strnlen(const char *s, size_t maxlen)
 #define TCP_ADDF_DELAYED_ECONNRESET 128 /* An ECONNRESET error occurred on send or shutdown */
 #define TCP_ADDF_SHUTDOWN_WR_DONE 256 /* A shutdown(sock, SHUT_WR) or SHUT_RDWR was made */
 #define TCP_ADDF_LINGER_ZERO 	  512 /* Discard driver queue on port close */
+#define TCP_ADDF_SENDFILE         1024 /* Send from an fd instead of the driver queue */
 
 /* *_REQ_* replies */
 #define INET_REP_ERROR       0
@@ -1136,7 +1152,6 @@ static int        packet_inet_init(void);
 static void       packet_inet_stop(ErlDrvData);
 static void       packet_inet_command(ErlDrvData, char*, ErlDrvSizeT);
 static void       packet_inet_drv_input(ErlDrvData data, ErlDrvEvent event);
-static void	  packet_inet_drv_output(ErlDrvData data, ErlDrvEvent event);
 static ErlDrvData udp_inet_start(ErlDrvPort, char* command);
 #ifdef HAVE_SCTP
 static ErlDrvData sctp_inet_start(ErlDrvPort, char* command);
@@ -1161,7 +1176,7 @@ static struct erl_drv_entry udp_inet_driver_entry =
     NULL, 
 #else
     packet_inet_drv_input,
-    packet_inet_drv_output,
+    NULL,
 #endif
     "udp_inet",
     NULL,
@@ -1196,7 +1211,7 @@ static struct erl_drv_entry sctp_inet_driver_entry =
     NULL, 
 #else
     packet_inet_drv_input,
-    packet_inet_drv_output,
+    NULL,
 #endif
     "sctp_inet",
     NULL,
@@ -1236,6 +1251,21 @@ typedef struct {
     inet_async_multi_op *multi_first;/* NULL == no multi-accept-queue, op is in ordinary queue */
     inet_async_multi_op *multi_last;
     MultiTimerData *mtd;        /* Timer structures for multiple accept */
+#ifdef HAVE_SENDFILE
+    struct {
+        ErlDrvSizeT ioq_skip;   /* The number of bytes in the queue at the time
+                                 * sendfile was issued, which must be sent
+                                 * before issuing the sendfile call itself. */
+        int dup_file_fd;        /* The file handle to send from; this is
+                                 * duplicated when sendfile is issued to
+                                 * reduce (but not eliminate) the impact of a
+                                 * nasty race, so we have to remember to close
+                                 * it. */
+        Uint64 bytes_sent;
+        Uint64 offset;
+        Uint64 length;
+    } sendfile;
+#endif
 } tcp_descriptor;
 
 /* send function */
@@ -1246,6 +1276,8 @@ static int tcp_deliver(tcp_descriptor* desc, int len);
 
 static int tcp_shutdown_error(tcp_descriptor* desc, int err);
 
+static int tcp_inet_sendfile(tcp_descriptor* desc);
+
 static int tcp_inet_output(tcp_descriptor* desc, HANDLE event);
 static int tcp_inet_input(tcp_descriptor* desc, HANDLE event);
 
@@ -1262,7 +1294,6 @@ typedef struct {
 
 
 static int packet_inet_input(udp_descriptor* udesc, HANDLE event);
-static int packet_inet_output(udp_descriptor* udesc, HANDLE event);
 #endif
 
 /* convert descriptor pointer to inet_descriptor pointer */
@@ -1331,6 +1362,9 @@ static ErlDrvTermData am_ipv6_v6only;
 static ErlDrvTermData am_netns;
 static ErlDrvTermData am_bind_to_device;
 #endif
+#ifdef HAVE_SENDFILE
+static ErlDrvTermData am_sendfile;
+#endif
 
 static char str_eafnosupport[] = "eafnosupport";
 static char str_einval[] = "einval";
@@ -2199,13 +2233,16 @@ static int inet_reply_ok(inet_descriptor* desc)
     ErlDrvTermData caller = desc->caller;
     int i = 0;
     
+    desc->caller = 0;
+    if (is_not_internal_pid(caller))
+        return 0;
+
     i = LOAD_ATOM(spec, i, am_inet_reply);
     i = LOAD_PORT(spec, i, desc->dport);
     i = LOAD_ATOM(spec, i, am_ok);
     i = LOAD_TUPLE(spec, i, 3);
     ASSERT(i == sizeof(spec)/sizeof(*spec));
     
-    desc->caller = 0;
     return erl_drv_send_term(desc->dport, caller, spec, i);    
 }
 
@@ -3874,6 +3911,10 @@ static int inet_init()
     INIT_ATOM(https);
     INIT_ATOM(scheme);
 
+#ifdef HAVE_SENDFILE
+    INIT_ATOM(sendfile);
+#endif
+
     /* add TCP, UDP and SCTP drivers */
     add_driver_entry(&tcp_inet_driver_entry);
 #ifdef HAVE_UDP
@@ -9269,6 +9310,13 @@ static void tcp_inet_stop(ErlDrvData e)
  * will be freed through tcp_inet_stop later on. */
 static void tcp_desc_close(tcp_descriptor* desc)
 {
+#ifdef HAVE_SENDFILE
+    if(desc->tcp_add_flags & TCP_ADDF_SENDFILE) {
+        desc->tcp_add_flags &= ~TCP_ADDF_SENDFILE;
+        close(desc->sendfile.dup_file_fd);
+    }
+#endif
+
     tcp_clear_input(desc);
     tcp_clear_output(desc);
 
@@ -9607,6 +9655,60 @@ static ErlDrvSSizeT tcp_inet_ctl(ErlDrvData e, unsigned int cmd,
 	    return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
 	}
     }
+
+    case TCP_REQ_SENDFILE: {
+#ifdef HAVE_SENDFILE
+        const ErlDrvSizeT required_len =
+            sizeof(desc->sendfile.dup_file_fd) +
+            sizeof(Uint64) * 2;
+
+        int raw_file_fd;
+
+        DEBUGF(("tcp_inet_ctl(%ld): SENDFILE\r\n", (long)desc->inet.port));
+
+        if (len != required_len) {
+            return ctl_error(EINVAL, rbuf, rsize);
+        } else if (!IS_CONNECTED(INETP(desc))) {
+            return ctl_error(ENOTCONN, rbuf, rsize);
+        }
+
+        sys_memcpy(&raw_file_fd, buf, sizeof(raw_file_fd));
+        buf += sizeof(raw_file_fd);
+
+        desc->sendfile.dup_file_fd = dup(raw_file_fd);
+
+        if(desc->sendfile.dup_file_fd == -1) {
+            return ctl_error(errno, rbuf, rsize);
+        }
+
+        desc->sendfile.offset = get_int64(buf);
+        buf += sizeof(Uint64);
+
+        desc->sendfile.length = get_int64(buf);
+        buf += sizeof(Uint64);
+
+        ASSERT(desc->sendfile.offset >= 0);
+        ASSERT(desc->sendfile.length >= 0);
+
+        desc->sendfile.ioq_skip = driver_sizeq(desc->inet.port);
+        desc->sendfile.bytes_sent = 0;
+
+        desc->inet.caller = driver_caller(desc->inet.port);
+        desc->tcp_add_flags |= TCP_ADDF_SENDFILE;
+
+        /* See if we can finish sending without selecting & rescheduling. */
+        tcp_inet_sendfile(desc);
+
+        if(desc->sendfile.length > 0) {
+            sock_select(INETP(desc), FD_WRITE, 1);
+        }
+
+        return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
+#else
+        return ctl_error(ENOTSUP, rbuf, rsize);
+#endif
+    }
+
     default:
 	DEBUGF(("tcp_inet_ctl(%ld): %u\r\n", (long)desc->inet.port, cmd)); 
 	return inet_ctl(INETP(desc), cmd, buf, len, rbuf, rsize);
@@ -9746,12 +9848,27 @@ static void tcp_inet_commandv(ErlDrvData e, ErlIOVec* ev)
 static void tcp_inet_flush(ErlDrvData e)
 {
     tcp_descriptor* desc = (tcp_descriptor*)e;
-    if (!(desc->inet.event_mask & FD_WRITE)) {
-	/* Discard send queue to avoid hanging port (OTP-7615) */
-	tcp_clear_output(desc);
+    int discard_output;
+
+    /* Discard send queue to avoid hanging port (OTP-7615) */
+    discard_output = !(desc->inet.event_mask & FD_WRITE);
+
+    discard_output |= desc->tcp_add_flags & TCP_ADDF_LINGER_ZERO;
+
+#ifdef HAVE_SENDFILE
+    /* The old file driver aborted when it was stopped during sendfile, so
+     * we'll clear the flag and discard all output. */
+    if(desc->tcp_add_flags & TCP_ADDF_SENDFILE) {
+        desc->tcp_add_flags &= ~TCP_ADDF_SENDFILE;
+        close(desc->sendfile.dup_file_fd);
+
+        discard_output = 1;
+    }
+#endif
+
+    if (discard_output) {
+        tcp_clear_output(desc);
     }
-    if (desc->tcp_add_flags & TCP_ADDF_LINGER_ZERO)
-	tcp_clear_output(desc);
 }
 
 static void tcp_inet_process_exit(ErlDrvData e, ErlDrvMonitor *monitorp) 
@@ -10646,7 +10763,9 @@ static int tcp_sendv(tcp_descriptor* desc, ErlIOVec* ev)
 	ev->size += h_len;
     }
 
-    if ((sz = driver_sizeq(ix)) > 0) {
+    sz = driver_sizeq(ix);
+
+    if ((desc->tcp_add_flags & TCP_ADDF_SENDFILE) || sz > 0) {
 	driver_enqv(ix, ev, 0);
 	if (sz+ev->size >= desc->high) {
 	    DEBUGF(("tcp_sendv(%ld): s=%d, sender forced busy\r\n",
@@ -10740,8 +10859,9 @@ static int tcp_send(tcp_descriptor* desc, char* ptr, ErlDrvSizeT len)
 
     inet_output_count(INETP(desc), len+h_len);
 
+    sz = driver_sizeq(ix);
 
-    if ((sz = driver_sizeq(ix)) > 0) {
+    if ((desc->tcp_add_flags & TCP_ADDF_SENDFILE) || sz > 0) {
 	if (h_len > 0)
 	    driver_enq(ix, buf, h_len);
 	driver_enq(ix, ptr, len);
@@ -10831,6 +10951,246 @@ static void tcp_inet_drv_input(ErlDrvData data, ErlDrvEvent event)
     (void)tcp_inet_input((tcp_descriptor*)data, (HANDLE)event);
 }
 
+#ifdef HAVE_SENDFILE
+static int tcp_sendfile_completed(tcp_descriptor* desc) {
+    ErlDrvTermData spec[LOAD_PORT_CNT + LOAD_TUPLE_CNT * 2 +
+        LOAD_ATOM_CNT * 2 + LOAD_UINT_CNT * 2];
+    Uint32 sent_low, sent_high;
+    int i;
+
+    desc->tcp_add_flags &= ~TCP_ADDF_SENDFILE;
+    close(desc->sendfile.dup_file_fd);
+
+    /* While we flushed the output queue prior to sending the file, we've
+     * deferred clearing busy status until now as there's no point in doing so
+     * while we still have a file to send.
+     *
+     * The watermark is checked since more data may have been added while we
+     * were sending the file. */
+
+    if (driver_sizeq(desc->inet.port) <= desc->low) {
+        if (IS_BUSY(INETP(desc))) {
+            desc->inet.caller = desc->inet.busy_caller;
+            desc->inet.state &= ~INET_F_BUSY;
+
+            set_busy_port(desc->inet.port, 0);
+
+            /* if we have a timer then cancel and send ok to client */
+            if (desc->busy_on_send) {
+                driver_cancel_timer(desc->inet.port);
+                desc->busy_on_send = 0;
+            }
+
+            inet_reply_ok(INETP(desc));
+        }
+    }
+
+    if (driver_sizeq(desc->inet.port) == 0) {
+        sock_select(INETP(desc), FD_WRITE, 0);
+        send_empty_out_q_msgs(INETP(desc));
+
+        if (desc->tcp_add_flags & TCP_ADDF_PENDING_SHUTDOWN) {
+            tcp_shutdown_async(desc);
+        }
+    }
+
+    sent_low = ((Uint64)desc->sendfile.bytes_sent >> 0) & 0xFFFFFFFF;
+    sent_high = ((Uint64)desc->sendfile.bytes_sent >> 32) & 0xFFFFFFFF;
+
+    i = LOAD_ATOM(spec, 0, am_sendfile);
+    i = LOAD_PORT(spec, i, desc->inet.dport);
+    i = LOAD_ATOM(spec, i, am_ok);
+    i = LOAD_UINT(spec, i, sent_low);
+    i = LOAD_UINT(spec, i, sent_high);
+    i = LOAD_TUPLE(spec, i, 3);
+    i = LOAD_TUPLE(spec, i, 3);
+
+    ASSERT(i == sizeof(spec)/sizeof(*spec));
+
+    return erl_drv_output_term(desc->inet.dport, spec, i);
+}
+
+static int tcp_sendfile_aborted(tcp_descriptor* desc, int socket_error) {
+    ErlDrvTermData spec[LOAD_PORT_CNT + LOAD_TUPLE_CNT * 2 + LOAD_ATOM_CNT * 3];
+    int i;
+
+    /* We don't clean up sendfile state here, as that's done in tcp_desc_close
+     * following normal error handling. All we do here is report the failure. */
+
+    i = LOAD_ATOM(spec, 0, am_sendfile);
+    i = LOAD_PORT(spec, i, desc->inet.dport);
+    i = LOAD_ATOM(spec, i, am_error);
+
+    switch (socket_error) {
+    case ECONNRESET:
+    case ENOTCONN:
+    case EPIPE:
+        i = LOAD_ATOM(spec, i, am_closed);
+        break;
+    default:
+        i = LOAD_ATOM(spec, i, error_atom(socket_error));
+    }
+
+    i = LOAD_TUPLE(spec, i, 2);
+    i = LOAD_TUPLE(spec, i, 3);
+
+    ASSERT(i == sizeof(spec)/sizeof(*spec));
+
+    return erl_drv_output_term(desc->inet.dport, spec, i);
+}
+
+static int tcp_inet_sendfile(tcp_descriptor* desc) {
+    ErlDrvPort ix = desc->inet.port;
+    int result = 0;
+    ssize_t n;
+
+    DEBUGF(("tcp_inet_sendfile(%ld) {s=%d\r\n", (long)ix, desc->inet.s));
+
+    /* If there was any data in the queue by the time sendfile was issued,
+     * we'll need to skip it first. Note that we don't clear busy status until
+     * we're finished sending the file. */
+    while (desc->sendfile.ioq_skip > 0) {
+        ssize_t bytes_to_send;
+        SysIOVec* iov;
+        int vsize;
+
+        ASSERT(driver_sizeq(ix) >= desc->sendfile.ioq_skip);
+
+        if ((iov = driver_peekq(ix, &vsize)) == NULL) {
+            ERTS_INTERNAL_ERROR("ioq empty when sendfile.ioq_skip > 0");
+        }
+
+        bytes_to_send = MIN(desc->sendfile.ioq_skip, iov[0].iov_len);
+        n = sock_send(desc->inet.s, iov[0].iov_base, bytes_to_send, 0);
+
+        if (!IS_SOCKET_ERROR(n)) {
+            desc->sendfile.ioq_skip -= n;
+            driver_deq(ix, n);
+        } else if (sock_errno() == ERRNO_BLOCK) {
+#ifdef __WIN32__
+            desc->inet.send_would_block = 1;
+#endif
+            goto done;
+        } else if (sock_errno() != EINTR) {
+            goto socket_error;
+        }
+    }
+
+    while (desc->sendfile.length > 0) {
+        /* For some reason the maximum ssize_t cannot be used as the max size.
+         * 1GB seems to work on all platforms */
+        const Sint64 SENDFILE_CHUNK_SIZE = ((1UL << 30) - 1);
+
+        ssize_t bytes_to_send = MIN(SENDFILE_CHUNK_SIZE, desc->sendfile.length);
+        off_t offset = desc->sendfile.offset;
+
+#if defined(__linux__)
+        n = sendfile(desc->inet.s, desc->sendfile.dup_file_fd, &offset,
+            bytes_to_send);
+#elif defined(__FreeBSD__) || defined(__DragonFly__) || defined(__DARWIN__)
+        {
+            off_t bytes_sent;
+            int error;
+
+    #if defined(__DARWIN__)
+            bytes_sent = bytes_to_send;
+
+            error = sendfile(desc->sendfile.dup_file_fd, desc->inet.s, offset,
+                &bytes_sent, NULL, 0);
+            n = bytes_sent;
+    #else
+            error = sendfile(desc->sendfile.dup_file_fd, desc->inet.s, offset,
+                bytes_to_send, NULL, &bytes_sent, 0);
+            n = bytes_sent;
+    #endif
+
+            if(error < 0) {
+                /* EAGAIN/EINTR report partial success by setting bytes_sent,
+                 * so we have to skip error handling if nonzero, and skip EOF
+                 * handling if zero, as it's possible that we didn't manage to
+                 * send anything at all before being interrupted by a
+                 * signal. */
+                if((errno != EAGAIN && errno != EINTR) || bytes_sent == 0) {
+                    n = -1;
+                }
+            }
+        }
+#elif defined(__sun) && defined(__SVR4) && defined(HAVE_SENDFILEV)
+        {
+            sendfilevec_t sfvec[1];
+            size_t bytes_sent;
+            ssize_t error;
+
+            sfvec[0].sfv_fd = desc->sendfile.dup_file_fd;
+            sfvec[0].sfv_len = bytes_to_send;
+            sfvec[0].sfv_off = offset;
+            sfvec[0].sfv_flag = 0;
+
+            error = sendfilev(desc->inet.s, sfvec, 1, &bytes_sent);
+            n = bytes_sent;
+
+            if(error < 0) {
+                if(errno == EINVAL) {
+                    /* On some solaris versions (I've seen it on SunOS 5.10),
+                     * using a sfv_len larger than the filesize will result in
+                     * a (-1 && errno == EINVAL). We translate this to a
+                     * successful send of the data.*/
+                } else {
+                    /* EAGAIN/EINTR behavior is identical to *BSD. */
+                    if((errno != EAGAIN && errno != EINTR) || bytes_sent == 0) {
+                        n = -1;
+                    }
+                }
+            }
+        }
+#else
+        #error "Unsupported sendfile syscall; update configure test."
+#endif
+
+        if (n > 0) {
+            desc->sendfile.bytes_sent += n;
+            desc->sendfile.offset += n;
+            desc->sendfile.length -= n;
+        } else if (n == 0) {
+            /* EOF. */
+            desc->sendfile.length = 0;
+            break;
+        } else if (IS_SOCKET_ERROR(n) && sock_errno() != EINTR) {
+            if (sock_errno() != ERRNO_BLOCK) {
+                goto socket_error;
+            }
+
+#ifdef __WIN32__
+            desc->inet.send_would_block = 1;
+#endif
+            break;
+        }
+    }
+
+    if (desc->sendfile.length == 0) {
+        tcp_sendfile_completed(desc);
+    }
+
+    goto done;
+
+socket_error: {
+        int socket_errno = sock_errno();
+
+        DEBUGF(("tcp_inet_sendfile(%ld): send errno = %d (errno %d)\r\n",
+            (long)desc->inet.port, socket_errno, errno));
+
+        result = tcp_send_error(desc, socket_errno);
+        tcp_sendfile_aborted(desc, socket_errno);
+
+        goto done;
+    }
+
+done:
+    DEBUGF(("tcp_inet_sendfile(%ld) }\r\n", (long)desc->inet.port));
+    return result;
+}
+#endif /* HAVE_SENDFILE */
+
 /* socket ready for ouput:
 ** 1. INET_STATE_CONNECTING => non block connect ?
 ** 2. INET_STATE_CONNECTED  => write output
@@ -10891,7 +11251,14 @@ static int tcp_inet_output(tcp_descriptor* desc, HANDLE event)
 	async_ok(INETP(desc));
     }
     else if (IS_CONNECTED(INETP(desc))) {
-	for (;;) {
+
+#ifdef HAVE_SENDFILE
+        if(desc->tcp_add_flags & TCP_ADDF_SENDFILE) {
+            return tcp_inet_sendfile(desc);
+        }
+#endif
+
+        for (;;) {
 	    int vsize;
 	    ssize_t n;
 	    SysIOVec* iov;
@@ -11297,24 +11664,20 @@ static ErlDrvSSizeT packet_inet_ctl(ErlDrvData e, unsigned int cmd, char* buf,
 		 (desc->sfamily, &remote, &buf, &len)) != NULL)
 	        return ctl_xerror(xerror, rbuf, rsize);
 	
-	    sock_select(desc, FD_CONNECT, 1);
 	    code = sock_connect(desc->s, &remote.sa, len);
 
 	    if (IS_SOCKET_ERROR(code) && (sock_errno() == EINPROGRESS)) {
 		/* XXX: Unix only -- WinSock would have a different cond! */
-		desc->state = INET_STATE_CONNECTING;
 		if (timeout != INET_INFINITY)
 		    driver_set_timer(desc->port, timeout);
 		enq_async(desc, tbuf, INET_REQ_CONNECT);
+		async_ok(desc);
 	    }
 	    else if (code == 0) { /* OK we are connected */
-		sock_select(desc, FD_CONNECT, 0);
-		desc->state = INET_STATE_CONNECTED;
 		enq_async(desc, tbuf, INET_REQ_CONNECT);
 		async_ok(desc);
 	    }
 	    else {
-		sock_select(desc, FD_CONNECT, 0);
 		return ctl_error(sock_errno(), rbuf, rsize);
 	    }
 	    return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
@@ -11829,77 +12192,6 @@ static int packet_inet_input(udp_descriptor* udesc, HANDLE event)
     return count;
 }
 
-static void packet_inet_drv_output(ErlDrvData e, ErlDrvEvent event)
-{
-    (void)  packet_inet_output((udp_descriptor*)e, (HANDLE)event);
-}
-
-/* UDP/SCTP socket ready for output:
-**	This is a Back-End for Non-Block SCTP Connect (INET_STATE_CONNECTING)
-*/
-static int packet_inet_output(udp_descriptor* udesc, HANDLE event)
-{
-    inet_descriptor* desc = INETP(udesc);
-    int ret = 0;
-    ErlDrvPort ix = desc->port;
-
-    DEBUGF(("packet_inet_output(%ld) {s=%d\r\n", 
-	    (long)desc->port, desc->s));
-
-    if (desc->state == INET_STATE_CONNECTING) {
-	sock_select(desc, FD_CONNECT, 0);
-
-	driver_cancel_timer(ix);  /* posssibly cancel a timer */
-#ifndef __WIN32__
-	/*
-	 * XXX This is strange.  This *should* work on Windows NT too,
-	 * but doesn't.  An bug in Winsock 2.0 for Windows NT?
-	 *
-	 * See "Unix Netwok Programming", W.R.Stevens, p 412 for a
-	 * discussion about Unix portability and non blocking connect.
-	 */
-
-#ifndef SO_ERROR
-	{
-	    int sz = sizeof(desc->remote);
-	    int code = sock_peer(desc->s,
-				 (struct sockaddr*) &desc->remote, &sz);
-
-	    if (IS_SOCKET_ERROR(code)) {
-		desc->state = INET_STATE_OPEN;  /* restore state */
-		ret =  async_error(desc, sock_errno());
-		goto done;
-	    }
-	}
-#else
-	{
-	    int error = 0;	/* Has to be initiated, we check it */
-	    unsigned int sz = sizeof(error);   /* even if we get -1 */
-	    int code = sock_getopt(desc->s, SOL_SOCKET, SO_ERROR, 
-				   (void *)&error, &sz);
-
-	    if ((code < 0) || error) {
-		desc->state = INET_STATE_OPEN;  /* restore state */
-		ret = async_error(desc, error);
-		goto done;
-	    }
-	}
-#endif /* SO_ERROR */
-#endif /* !__WIN32__ */
-
-	desc->state = INET_STATE_CONNECTED;
-	async_ok(desc);
-    }
-    else {
-	sock_select(desc,FD_CONNECT,0);
-
-	DEBUGF(("packet_inet_output(%ld): bad state: %04x\r\n", 
-		(long)desc->port, desc->state));
-    }
- done:
-    DEBUGF(("packet_inet_output(%ld) }\r\n", (long)desc->port));
-    return ret;
-}
 #endif
 
 /*---------------------------------------------------------------------------*/
diff --git a/erts/emulator/drivers/unix/unix_efile.c b/erts/emulator/drivers/unix/unix_efile.c
deleted file mode 100644
index f8341f788a..0000000000
--- a/erts/emulator/drivers/unix/unix_efile.c
+++ /dev/null
@@ -1,1102 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 1997-2017. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-/*
- * Purpose: Provides file and directory operations for Unix.
- */
-#ifdef HAVE_CONFIG_H
-#  include "config.h"
-#endif
-#if defined(HAVE_POSIX_FALLOCATE) && !defined(__sun) && !defined(__sun__)
-#define _XOPEN_SOURCE 600
-#endif
-#if !defined(_GNU_SOURCE) && defined(HAVE_LINUX_FALLOC_H)
-#define _GNU_SOURCE
-#endif
-#include "sys.h"
-#include "erl_driver.h"
-#include "erl_efile.h"
-#include <utime.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#ifdef HAVE_SYS_UIO_H
-#include <sys/types.h>
-#include <sys/uio.h>
-#if defined(HAVE_SENDFILE) && (defined(__FreeBSD__) || defined(__DragonFly__))
-/* Need to define __BSD_VISIBLE in order to expose prototype of sendfile */
-#define __BSD_VISIBLE 1
-#include <sys/socket.h>
-#endif
-#endif
-#if defined(HAVE_SENDFILE) && (defined(__linux__) || (defined(__sun) && defined(__SVR4)))
-#include <sys/sendfile.h>
-#endif
-
-#if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__)
-#define __DARWIN__ 1
-#endif
-
-#if defined(__DARWIN__) || defined(HAVE_LINUX_FALLOC_H) || defined(HAVE_POSIX_FALLOCATE)
-#include <fcntl.h>
-#endif
-
-#ifdef HAVE_LINUX_FALLOC_H
-#include <linux/falloc.h>
-#endif
-
-#ifdef SUNOS4
-#  define getcwd(buf, size) getwd(buf)
-#endif
-
-/* Find a definition of MAXIOV, that is used in the code later. */
-#if defined IOV_MAX
-#define MAXIOV IOV_MAX
-#elif defined UIO_MAXIOV
-#define MAXIOV UIO_MAXIOV
-#else
-#define MAXIOV 16
-#endif
-
-
-/*
- * Macros for testing file types.
- */
-
-#define ISDIR(st) (S_ISDIR((st).st_mode))
-#define ISREG(st) (S_ISREG((st).st_mode))
-#define ISDEV(st) (S_ISCHR((st).st_mode) || S_ISBLK((st).st_mode))
-#define ISLNK(st) (S_ISLNK((st).st_mode))
-#ifdef NO_UMASK
-#define FILE_MODE 0644
-#define DIR_MODE  0755
-#else
-#define FILE_MODE 0666
-#define DIR_MODE  0777
-#endif
-
-#define IS_DOT_OR_DOTDOT(s) \
-    (s[0] == '.' && (s[1] == '\0' || (s[1] == '.' && s[2] == '\0')))
-
-static int check_error(int result, Efile_error* errInfo);
-
-static int
-check_error(int result, Efile_error *errInfo)
-{
-    if (result < 0) {
-	errInfo->posix_errno = errInfo->os_errno = errno;
-	return 0;
-    }
-    return 1;
-}
-
-int
-efile_init() {
-   return 1;
-}
-
-int
-efile_mkdir(Efile_error* errInfo,	/* Where to return error codes. */
-	    char* name)			/* Name of directory to create. */
-{
-#ifdef NO_MKDIR_MODE
-    return check_error(mkdir(name), errInfo);
-#else
-    return check_error(mkdir(name, DIR_MODE), errInfo);
-#endif
-}
-
-int
-efile_rmdir(Efile_error* errInfo,	/* Where to return error codes. */
-	    char* name)			/* Name of directory to delete. */
-{
-    if (rmdir(name) == 0) {
-	return 1;
-    }
-    if (errno == ENOTEMPTY) {
-	errno = EEXIST;
-    }
-    if (errno == EEXIST) {
-	int saved_errno = errno;
-	struct stat file_stat;
-	struct stat cwd_stat;
-
-	/*
-	 *  The error code might be wrong if this is the current directory.
-	 */
-
-	if (stat(name, &file_stat) == 0 && stat(".", &cwd_stat) == 0 &&
-	    file_stat.st_ino == cwd_stat.st_ino &&
-	    file_stat.st_dev == cwd_stat.st_dev) {
-	    saved_errno = EINVAL;
-	}
-	errno = saved_errno;
-    }
-    return check_error(-1, errInfo);
-}
-
-int
-efile_delete_file(Efile_error* errInfo,	/* Where to return error codes. */
-		  char* name)		/* Name of file to delete. */
-{
-    if (unlink(name) == 0) {
-	return 1;
-    }
-    if (errno == EISDIR) {	/* Linux sets the wrong error code. */
-	errno = EPERM;
-    }
-    return check_error(-1, errInfo);
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- *      Changes the name of an existing file or directory, from src to dst.
- *	If src and dst refer to the same file or directory, does nothing
- *	and returns success.  Otherwise if dst already exists, it will be
- *	deleted and replaced by src subject to the following conditions:
- *	    If src is a directory, dst may be an empty directory.
- *	    If src is a file, dst may be a file.
- *	In any other situation where dst already exists, the rename will
- *	fail.  
- *
- * Results:
- *	If the directory was successfully created, returns 1.
- *	Otherwise the return value is 0 and errno is set to
- *	indicate the error.  Some possible values for errno are:
- *
- *	EACCES:     src or dst parent directory can't be read and/or written.
- *	EEXIST:	    dst is a non-empty directory.
- *	EINVAL:	    src is a root directory or dst is a subdirectory of src.
- *	EISDIR:	    dst is a directory, but src is not.
- *	ENOENT:	    src doesn't exist, or src or dst is "".
- *	ENOTDIR:    src is a directory, but dst is not.  
- *	EXDEV:	    src and dst are on different filesystems.
- *	
- * Side effects:
- *	The implementation of rename may allow cross-filesystem renames,
- *	but the caller should be prepared to emulate it with copy and
- *	delete if errno is EXDEV.
- *
- *---------------------------------------------------------------------------
- */
-
-int
-efile_rename(Efile_error* errInfo,	/* Where to return error codes. */
-	     char* src,		        /* Original name. */
-	     char* dst)			/* New name. */
-{
-    if (rename(src, dst) == 0) {
-	return 1;
-    }
-    if (errno == ENOTEMPTY) {
-	errno = EEXIST;
-    }
-#if defined (sparc)
-    /*
-     * SunOS 4.1.4 reports overwriting a non-empty directory with a
-     * directory as EINVAL instead of EEXIST (first rule out the correct
-     * EINVAL result code for moving a directory into itself).  Must be
-     * conditionally compiled because realpath() is only defined on SunOS.
-     */
-
-    if (errno == EINVAL) {
-	char srcPath[MAXPATHLEN], dstPath[MAXPATHLEN];
-	DIR *dirPtr;
-	struct dirent *dirEntPtr;
-
-#ifdef PURIFY
-	memset(srcPath, '\0', sizeof(srcPath));
-	memset(dstPath, '\0', sizeof(dstPath));
-#endif
-
-	if ((realpath(src, srcPath) != NULL)
-		&& (realpath(dst, dstPath) != NULL)
-		&& (strncmp(srcPath, dstPath, strlen(srcPath)) != 0)) {
-	    dirPtr = opendir(dst);
-	    if (dirPtr != NULL) {
-		while ((dirEntPtr = readdir(dirPtr)) != NULL) {
-		    if ((strcmp(dirEntPtr->d_name, ".") != 0) &&
-			    (strcmp(dirEntPtr->d_name, "..") != 0)) {
-			errno = EEXIST;
-			closedir(dirPtr);
-			return check_error(-1, errInfo);
-		    }
-		}
-		closedir(dirPtr);
-	    }
-	}
-	errno = EINVAL;
-    }
-#endif	/* sparc */
-
-    if (strcmp(src, "/") == 0) {
-	/*
-	 * Alpha reports renaming / as EBUSY and Linux reports it as EACCES,
-	 * instead of EINVAL.
-	 */
-	 
-	errno = EINVAL;
-    }
-
-    /*
-     * DEC Alpha OSF1 V3.0 returns EACCES when attempting to move a
-     * file across filesystems and the parent directory of that file is
-     * not writable.  Most other systems return EXDEV.  Does nothing to
-     * correct this behavior.
-     */
-
-    return check_error(-1, errInfo);
-}
-
-int
-efile_chdir(Efile_error* errInfo,   /* Where to return error codes. */
-	    char* name)		    /* Name of directory to make current. */
-{
-    return check_error(chdir(name), errInfo);
-}
-
-
-int
-efile_getdcwd(Efile_error* errInfo,	/* Where to return error codes. */
-	      int drive,		/* 0 - current, 1 - A, 2 - B etc. */
-	      char* buffer,		/* Where to return the current 
-					   directory. */
-	      size_t size)		/* Size of buffer. */
-{
-    if (drive == 0) {
-	if (getcwd(buffer, size) == NULL)
-	    return check_error(-1, errInfo);
-	
-#ifdef SIMSPARCSOLARIS
-	/* We get "host:" prepended to the dirname - remove!. */
-	{
-	  int i = 0;
-	  int j = 0;
-	  while ((buffer[i] != ':') && (buffer[i] != '\0')) i++;
-	  if (buffer[i] == ':') {
-	    i++;
-	    while ((buffer[j++] = buffer[i++]) != '\0');
-	  }
-	}
-#endif	      
-	return 1;
-    }
-
-    /*
-     * Drives other than 0 is not supported on Unix.
-     */
-
-    errno = ENOTSUP;
-    return check_error(-1, errInfo);
-}
-
-int
-efile_readdir(Efile_error* errInfo,	/* Where to return error codes. */
-	      char* name,		/* Name of directory to open. */
-	      EFILE_DIR_HANDLE* p_dir_handle,	/* Pointer to directory 
-						   handle of
-						   open directory.*/
-	      char* buffer,		/* Pointer to buffer for 
-					   one filename. */
-	      size_t *size)		/* in-out Size of buffer, length
-					   of name. */
-{
-    DIR *dp;			/* Pointer to directory structure. */
-    struct dirent* dirp;	/* Pointer to directory entry. */
-
-    /*
-     * If this is the first call, we must open the directory.
-     */
-
-    if (*p_dir_handle == NULL) {
-	dp = opendir(name);
-	if (dp == NULL)
-	    return check_error(-1, errInfo);
-	*p_dir_handle = (EFILE_DIR_HANDLE) dp;
-    }
-
-    /*
-     * Retrieve the name of the next file using the directory handle.
-     */
-
-    dp = *((DIR **)((void *)p_dir_handle));
-    for (;;) {
-	dirp = readdir(dp);
-	if (dirp == NULL) {
-	    closedir(dp);
-	    return 0;
-	}
-	if (IS_DOT_OR_DOTDOT(dirp->d_name))
-	    continue;
-	buffer[0] = '\0';
-	strncat(buffer, dirp->d_name, (*size)-1);
-	*size = strlen(dirp->d_name);
-	return 1;
-    }
-}
-
-int
-efile_openfile(Efile_error* errInfo,	/* Where to return error codes. */
-	       char* name,		/* Name of directory to open. */
-	       int flags,		/* Flags to user for opening. */
-	       int* pfd,		/* Where to store the file 
-					   descriptor. */
-	       Sint64 *pSize)		/* Where to store the size of the 
-					   file. */
-{
-    struct stat statbuf;
-    int fd;
-    int mode;			/* Open mode. */
-
-    switch (flags & (EFILE_MODE_READ|EFILE_MODE_WRITE)) {
-    case EFILE_MODE_READ:
-	mode = O_RDONLY;
-	break;
-    case EFILE_MODE_WRITE:
-	if (flags & EFILE_NO_TRUNCATE)
-	    mode = O_WRONLY | O_CREAT;
-	else
-	    mode = O_WRONLY | O_CREAT | O_TRUNC;
-	break;
-    case EFILE_MODE_READ_WRITE:
-	mode = O_RDWR | O_CREAT;
-	break;
-    default:
-	errno = EINVAL;
-	return check_error(-1, errInfo);
-    }
-
-    if (flags & EFILE_MODE_APPEND) {
-	mode &= ~O_TRUNC;
-	mode |= O_APPEND;
-    }
-    if (flags & EFILE_MODE_EXCL) {
-	mode |= O_EXCL;
-    }
-    if (flags & EFILE_MODE_SYNC) {
-#ifdef O_SYNC
-	mode |= O_SYNC;
-#else
-	errno = ENOTSUP;
-	return check_error(-1, errInfo);
-#endif
-    }
-
-#ifdef HAVE_FSTAT
-    while (((fd = open(name, mode, FILE_MODE)) < 0) && (errno == EINTR));
-    if (!check_error(fd, errInfo)) return 0;
-#endif
-
-    if (
-#ifdef HAVE_FSTAT
-        fstat(fd, &statbuf) < 0
-#else
-        stat(name, &statbuf) < 0
-#endif
-        ) {
-        /* statbuf is undefined: if the caller depends on it,
-           i.e. invoke_read_file(), fail the call immediately */
-        if (pSize && flags == EFILE_MODE_READ) {
-            check_error(-1, errInfo);
-#ifdef HAVE_FSTAT
-            efile_closefile(fd);
-#endif
-            return 0;
-        }
-    }
-    else if (! ISREG(statbuf)) {
-        struct stat nullstatbuf;
-	/*
-	 * For UNIX only, here is some ugly code to allow
-	 * /dev/null to be opened as a file.
-	 */
-        if ( (stat("/dev/null", &nullstatbuf) < 0)
-             || (statbuf.st_ino != nullstatbuf.st_ino)
-             || (statbuf.st_dev != nullstatbuf.st_dev) ) {
-#ifdef HAVE_FSTAT
-            efile_closefile(fd);
-#endif
-	    errno = EISDIR;
-	    return check_error(-1, errInfo);
-        }
-    }
-
-#ifndef HAVE_FSTAT
-    while (((fd = open(name, mode, FILE_MODE)) < 0) && (errno == EINTR));
-    if (!check_error(fd, errInfo)) return 0;
-#endif
-
-    *pfd = fd;
-    if (pSize) *pSize = statbuf.st_size;
-    return 1;
-}
-
-int 
-efile_may_openfile(Efile_error* errInfo, char *name) {
-    struct stat statbuf;	/* Information about the file */
-    int result;
-    
-    result = stat(name, &statbuf);
-    if (!check_error(result, errInfo))
-	return 0;
-    if (!ISREG(statbuf)) {
-	errno = EISDIR;
-	return check_error(-1, errInfo);
-    }
-    return 1;
-}
-
-void
-efile_closefile(int fd)
-{
-    while((close(fd) < 0) && (errno == EINTR));
-}
-
-int
-efile_fdatasync(Efile_error *errInfo, /* Where to return error codes. */
-	    int fd)               /* File descriptor for file to sync data. */
-{
-#if defined(HAVE_FDATASYNC) && !defined(__DARWIN__)
-    return check_error(fdatasync(fd), errInfo);
-#else
-    return efile_fsync(errInfo, fd);
-#endif
-}
-
-int
-efile_fsync(Efile_error *errInfo, /* Where to return error codes. */
-	    int fd)               /* File descriptor for file to sync. */
-{
-#ifdef NO_FSYNC
-  undefined fsync /* XXX: Really? */
-#else
-#if defined(__DARWIN__) && defined(F_FULLFSYNC)
-    return check_error(fcntl(fd, F_FULLFSYNC), errInfo);
-#else
-    return check_error(fsync(fd), errInfo);
-#endif /* __DARWIN__ */
-#endif /* NO_FSYNC */
-}
-
-int
-efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo, 
-	       char* name, int info_for_link)
-{
-    struct stat statbuf;	/* Information about the file */
-    int result;
-
-    if (info_for_link) {
-	result = lstat(name, &statbuf);
-    } else {
-	result = stat(name, &statbuf);
-    }	
-    if (!check_error(result, errInfo)) {
-	return 0;
-    }
-
-#if SIZEOF_OFF_T == 4
-    pInfo->size_high = 0;
-#else
-    pInfo->size_high = (Uint32)(statbuf.st_size >> 32);
-#endif
-    pInfo->size_low = (Uint32)statbuf.st_size;
-
-#ifdef NO_ACCESS
-    /* Just look at read/write access for owner. */
-
-    pInfo->access = ((statbuf.st_mode >> 6) & 07) >> 1;
-
-#else
-    pInfo->access = FA_NONE;
-    if (access(name, R_OK) == 0)
-	pInfo->access |= FA_READ;
-    if (access(name, W_OK) == 0)
-	pInfo->access |= FA_WRITE;
-
-#endif	
-
-    if (ISDEV(statbuf))
-	pInfo->type = FT_DEVICE;
-    else if (ISDIR(statbuf))
-	pInfo->type = FT_DIRECTORY;
-    else if (ISREG(statbuf))
-	pInfo->type = FT_REGULAR;
-    else if (ISLNK(statbuf))
-	pInfo->type = FT_SYMLINK;
-    else
-	pInfo->type = FT_OTHER;
-
-    pInfo->accessTime   = (Sint64)statbuf.st_atime;
-    pInfo->modifyTime   = (Sint64)statbuf.st_mtime;
-    pInfo->cTime        = (Sint64)statbuf.st_ctime;
-
-    pInfo->mode         = statbuf.st_mode;
-    pInfo->links        = statbuf.st_nlink;
-    pInfo->major_device = statbuf.st_dev;
-    pInfo->minor_device = statbuf.st_rdev;
-    pInfo->inode        = statbuf.st_ino;
-    pInfo->uid          = statbuf.st_uid;
-    pInfo->gid          = statbuf.st_gid;
-
-    return 1;
-}
-
-int
-efile_write_info(Efile_error *errInfo, Efile_info *pInfo, char *name)
-{
-    struct utimbuf tval;
-
-    /*
-     * On some systems chown will always fail for a non-root user unless
-     * POSIX_CHOWN_RESTRICTED is not set.  Others will succeed as long as 
-     * you don't try to chown a file to someone besides youself.
-     */
-
-    if (chown(name, pInfo->uid, pInfo->gid) && errno != EPERM) {
-	return check_error(-1, errInfo);
-    }
-
-    if (pInfo->mode != -1) {
-	mode_t newMode = pInfo->mode & (S_ISUID | S_ISGID |
-					S_IRWXU | S_IRWXG | S_IRWXO);
-	if (chmod(name, newMode)) {
-	    newMode &= ~(S_ISUID | S_ISGID);
-	    if (chmod(name, newMode)) {
-		return check_error(-1, errInfo);
-	    }
-	}
-    }
-
-    tval.actime  = (time_t)pInfo->accessTime;
-    tval.modtime = (time_t)pInfo->modifyTime;
-
-    return check_error(utime(name, &tval), errInfo);
-}
-
-
-int
-efile_write(Efile_error* errInfo,	/* Where to return error codes. */
-	    int flags,			/* Flags given when file was 
-					   opened. */
-	    int fd,			/* File descriptor to write to. */
-	    char* buf,			/* Buffer to write. */
-	    size_t count)		/* Number of bytes to write. */
-{
-    ssize_t written;			/* Bytes written in last operation. */
-
-    while (count > 0) {
-	if ((written = write(fd, buf, count)) < 0) {
-	    if (errno != EINTR)
-		return check_error(-1, errInfo);
-	    else
-		written = 0;
-	}
-	ASSERT(written <= count);
-	buf += written;
-	count -= written;
-    }
-    return 1;
-}
-
-int
-efile_writev(Efile_error* errInfo,   /* Where to return error codes */
-	     int flags,              /* Flags given when file was
-				      * opened */
-	     int fd,                 /* File descriptor to write to */
-	     SysIOVec* iov,          /* Vector of buffer structs.
-				      * The structs may be changed i.e.
-				      * due to incomplete writes */
-	     int iovcnt)             /* Number of structs in vector */
-{
-    int cnt = 0;                     /* Buffers so far written */
-
-    ASSERT(iovcnt >= 0);
-    
-    while (cnt < iovcnt) {
-	if ((! iov[cnt].iov_base) || (iov[cnt].iov_len <= 0)) {
-	    /* Empty buffer - skip */
-	    cnt++;
-	} else { /* Non-empty buffer */
-	    ssize_t w;                   /* Bytes written in this call */
-#ifdef HAVE_WRITEV
-	    int b = iovcnt - cnt;        /* Buffers to write */
-	    /* Use as many buffers as MAXIOV allows */
-	    if (b > MAXIOV)
-		b = MAXIOV;
-	    if (b > 1) {
-		do {
-		    w = writev(fd, &iov[cnt], b);
-		} while (w < 0 && errno == EINTR);
-		if (w < 0 && errno == EINVAL) {
-		    goto single_write;
-		}
-	    } else
-	    single_write:
-		/* Degenerated io vector - use regular write */
-#endif
-		{
-		    do {
-			size_t iov_len = iov[cnt].iov_len;
-			size_t limit = 1024*1024*1024; /* 1GB */
-			if (iov_len > limit) {
-			    iov_len = limit;
-			}
-			w = write(fd, iov[cnt].iov_base, iov_len);
-		    } while (w < 0 && errno == EINTR);
-		    ASSERT(w <= iov[cnt].iov_len ||
-			   (w == -1 && errno != EINTR));
-		}
-	    if (w < 0) return check_error(-1, errInfo);
-	    /* Move forward to next buffer to write */
-	    for (; cnt < iovcnt && w > 0; cnt++) {
-		if (iov[cnt].iov_base && iov[cnt].iov_len > 0) {
-		    if (w < iov[cnt].iov_len) {
-			/* Adjust the buffer for next write */
-			iov[cnt].iov_len -= w;
-			iov[cnt].iov_base = ((char *)iov[cnt].iov_base) + w;
-			w = 0;
-			break;
-		    } else {
-			w -= iov[cnt].iov_len;
-		    }
-		}
-	    }
-	    ASSERT(w == 0);
-	} /* else Non-empty buffer */
-    } /* while (cnt< iovcnt) */
-    return 1;
-}
-
-int
-efile_read(Efile_error* errInfo,     /* Where to return error codes. */
-	   int flags,		     /* Flags given when file was opened. */
-	   int fd,		     /* File descriptor to read from. */
-	   char* buf,		     /* Buffer to read into. */
-	   size_t count,	     /* Number of bytes to read. */
-	   size_t *pBytesRead)	     /* Where to return number of 
-					bytes read. */
-{
-    ssize_t n;
-
-    for (;;) {
-	if ((n = read(fd, buf, count)) >= 0)
-	    break;
-	else if (errno != EINTR)
-	    return check_error(-1, errInfo);
-    }
-    *pBytesRead = (size_t) n;
-    return 1;
-}
-
-
-/* pread() and pwrite()                                                   */
-/* Some unix systems, notably Solaris has these syscalls                  */
-/* It is especially nice for i.e. the dets module to have support         */
-/* for this, even if the underlying OS dosn't support it, it is           */
-/* reasonably easy to work around by first calling seek, and then         */
-/* calling read().                                                        */
-/* This later strategy however changes the file pointer, which pread()    */
-/* does not do. We choose to ignore this and say that the location        */
-/* of the file pointer is undefined after a call to any of the p functions*/
-
-
-int
-efile_pread(Efile_error* errInfo,     /* Where to return error codes. */
-	    int fd,		      /* File descriptor to read from. */
-	    Sint64 offset,            /* Offset in bytes from BOF. */
-	    char* buf,		      /* Buffer to read into. */
-	    size_t count,	      /* Number of bytes to read. */
-	    size_t *pBytesRead)	      /* Where to return 
-					 number of bytes read. */
-{
-#if defined(HAVE_PREAD) && defined(HAVE_PWRITE)
-    ssize_t n;
-    off_t off = (off_t) offset;
-    if (off != offset) {
-	errno = EINVAL;
-	return check_error(-1, errInfo);
-    }
-    for (;;) {
-	if ((n = pread(fd, buf, count, offset)) >= 0)
-	    break;
-	else if (errno != EINTR)
-	    return check_error(-1, errInfo);
-    }
-    *pBytesRead = (size_t) n;
-    return 1;
-#else
-    {
-	int res = efile_seek(errInfo, fd, offset, EFILE_SEEK_SET, NULL);
-	if (res) {
-	    return efile_read(errInfo, 0, fd, buf, count, pBytesRead);
-	} else {
-	    return res;
-	}
-    }
-#endif
-}
-
-
-
-int
-efile_pwrite(Efile_error* errInfo,  /* Where to return error codes. */
-	     int fd,		    /* File descriptor to write to. */
-	     char* buf,		    /* Buffer to write. */
-	     size_t count,	    /* Number of bytes to write. */
-	     Sint64 offset)	    /* where to write it */
-{ 
-#if defined(HAVE_PREAD) && defined(HAVE_PWRITE)
-    ssize_t written;		    /* Bytes written in last operation. */
-    off_t off = (off_t) offset;
-    if (off != offset) {
-	errno = EINVAL;
-	return check_error(-1, errInfo);
-    }
-    
-    while (count > 0) {
-	if ((written = pwrite(fd, buf, count, offset)) < 0) {
-	    if (errno != EINTR)
-		return check_error(-1, errInfo);
-	    else
-		written = 0;
-	}
-	ASSERT(written <= count);
-	buf += written;
-	count -= written;
-	offset += written;
-    }
-    return 1;
-#else  /* For unix systems that don't support pread() and pwrite() */    
-    {
-	int res = efile_seek(errInfo, fd, offset, EFILE_SEEK_SET, NULL);
-	
-	if (res) {
-	    return efile_write(errInfo, 0, fd, buf, count);
-	} else {
-	    return res;
-	}
-    }
-#endif
-}
-
-
-int
-efile_seek(Efile_error* errInfo,      /* Where to return error codes. */
-	   int fd,                    /* File descriptor to do the seek on. */
-	   Sint64 offset,             /* Offset in bytes from the given 
-					 origin. */ 
-	   int origin,                /* Origin of seek (SEEK_SET, SEEK_CUR,
-				         SEEK_END). */ 
-	   Sint64 *new_location)      /* Resulting new location in file. */
-{
-    off_t off, result;
-
-    switch (origin) {
-    case EFILE_SEEK_SET: origin = SEEK_SET; break;
-    case EFILE_SEEK_CUR: origin = SEEK_CUR; break;
-    case EFILE_SEEK_END: origin = SEEK_END; break;
-    default:
-	errno = EINVAL;
-	return check_error(-1, errInfo);
-    }
-    off = (off_t) offset;
-    if (off != offset) {
-	errno = EINVAL;
-	return check_error(-1, errInfo);
-    }
-    
-    errno = 0;
-    result = lseek(fd, off, origin);
-
-    /*
-     * Note that the man page for lseek (on SunOs 5) says:
-     * 
-     * "if fildes is a remote file  descriptor  and  offset  is
-     * negative,  lseek()  returns  the  file pointer even if it is
-     * negative."
-     */
-
-    if (result < 0 && errno == 0)
-	errno = EINVAL;
-    if (result < 0)
-	return check_error(-1, errInfo);
-    if (new_location) {
-	*new_location = result;
-    }
-    return 1;
-}
-
-
-int
-efile_truncate_file(Efile_error* errInfo, int *fd, int flags)
-{
-#ifndef NO_FTRUNCATE
-    off_t offset;
-
-    return check_error((offset = lseek(*fd, 0, 1)) >= 0 &&
-		       ftruncate(*fd, offset) == 0 ? 1 : -1,
-		       errInfo);
-#else
-    return 1;
-#endif
-}
-
-int
-efile_readlink(Efile_error* errInfo, char* name, char* buffer, size_t size)
-{
-    int len;
-    ASSERT(size > 0);
-    len = readlink(name, buffer, size-1);
-    if (len == -1) {
-	return check_error(-1, errInfo);
-    }
-    buffer[len] = '\0';
-    return 1;
-}
-
-int
-efile_altname(Efile_error* errInfo, char* name, char* buffer, size_t size)
-{
-    errno = ENOTSUP;
-    return check_error(-1, errInfo);
-}
-
-int
-efile_link(Efile_error* errInfo, char* old, char* new)
-{
-    return check_error(link(old, new), errInfo);
-}
-
-int
-efile_symlink(Efile_error* errInfo, char* old, char* new)
-{
-    return check_error(symlink(old, new), errInfo);
-}
-
-int
-efile_fadvise(Efile_error* errInfo, int fd, Sint64 offset,
-		  Sint64 length, int advise)
-{
-#ifdef HAVE_POSIX_FADVISE
-    return check_error(posix_fadvise(fd, offset, length, advise), errInfo);
-#else
-    return check_error(0, errInfo);
-#endif
-}
-
-#ifdef HAVE_SENDFILE
-/* For some reason the maximum size_t cannot be used as the max size
-   3GB seems to work on all platforms */
-#define SENDFILE_CHUNK_SIZE ((1UL << 30) -1)
-
-/*
- * sendfile: The implementation of the sendfile system call varies
- * a lot on different *nix platforms so to make the api similar in all
- * we have to emulate some things in linux and play with variables on
- * bsd/darwin.
- *
- * All of the calls will split a command which tries to send more than
- * SENDFILE_CHUNK_SIZE of data at once.
- *
- * On platforms where *nbytes of 0 does not mean the entire file, this is
- * simulated.
- *
- * It could be possible to implement header/trailer in sendfile. Though
- * you would have to emulate it in linux and on BSD/Darwin some complex
- * calculations have to be made when using a non blocking socket to figure
- * out how much of the header/file/trailer was sent in each command.
- *
- * The semantics of the API is this:
- * Return value: 1 if all data was sent and the function does not need to
- * be called again. 0 if an error occures OR if there is more data which
- * has to be sent (EAGAIN or EINTR will be set appropriately)
- *
- * The amount of data written in a call is returned through nbytes.
- *
- */
-
-int
-efile_sendfile(Efile_error* errInfo, int in_fd, int out_fd,
-	       off_t *offset, Uint64 *nbytes, struct t_sendfile_hdtl* hdtl)
-{
-    Uint64 written = 0;
-#if defined(__linux__)
-    ssize_t retval;
-    do {
-      /* check if *nbytes is 0 or greater than chunk size */
-      if (*nbytes == 0 || *nbytes > SENDFILE_CHUNK_SIZE)
-	retval = sendfile(out_fd, in_fd, offset, SENDFILE_CHUNK_SIZE);
-      else
-	retval = sendfile(out_fd, in_fd, offset, *nbytes);
-      if (retval > 0) {
-	written += retval;
-	*nbytes -= retval;
-      }
-    } while (retval == SENDFILE_CHUNK_SIZE);
-    if (written != 0) {
-      /* -1 is not returned by the linux API so we have to simulate it */
-      retval = -1;
-      errno = EAGAIN;
-    }
-#elif defined(__sun) && defined(__SVR4) && defined(HAVE_SENDFILEV)
-    ssize_t retval;
-    size_t len;
-    sendfilevec_t fdrec;
-    fdrec.sfv_fd = in_fd;
-    fdrec.sfv_flag = 0;
-    do {
-      fdrec.sfv_off = *offset;
-      len = 0;
-      /* check if *nbytes is 0 or greater than chunk size */
-      if (*nbytes == 0 || *nbytes > SENDFILE_CHUNK_SIZE)
-	fdrec.sfv_len = SENDFILE_CHUNK_SIZE;
-      else
-	fdrec.sfv_len = *nbytes;
-
-      retval = sendfilev(out_fd, &fdrec, 1, &len);
-
-      if (retval == -1 && errno == EINVAL) {
-          /* On some solaris versions (I've seen it on SunOS 5.10),
-             using a sfv_len larger then a filesize will result in
-             a -1 && errno == EINVAL return. We translate this so
-             a successful send of the data.*/
-          retval = len;
-      }
-
-      if (retval != -1 || errno == EAGAIN || errno == EINTR) {
-        *offset += len;
-	*nbytes -= len;
-	written += len;
-      }
-    } while (len == SENDFILE_CHUNK_SIZE);
-#elif defined(__DARWIN__)
-    int retval;
-    off_t len;
-    do {
-      /* check if *nbytes is 0 or greater than chunk size */
-      if(*nbytes > SENDFILE_CHUNK_SIZE)
-	len = SENDFILE_CHUNK_SIZE;
-      else
-	len = *nbytes;
-      retval = sendfile(in_fd, out_fd, *offset, &len, NULL, 0);
-      if (retval != -1 || errno == EAGAIN || errno == EINTR) {
-        *offset += len;
-	*nbytes -= len;
-	written += len;
-      }
-    } while (len == SENDFILE_CHUNK_SIZE);
-#elif defined(__FreeBSD__) || defined(__DragonFly__)
-    off_t len;
-    int retval;
-    do {
-      if (*nbytes > SENDFILE_CHUNK_SIZE)
-	retval = sendfile(in_fd, out_fd, *offset, SENDFILE_CHUNK_SIZE,
-			  NULL, &len, 0);
-      else
-	retval = sendfile(in_fd, out_fd, *offset, *nbytes, NULL, &len, 0);
-      if (retval != -1 || errno == EAGAIN || errno == EINTR) {
-	*offset += len;
-	*nbytes -= len;
-	written += len;
-      }
-    } while(len == SENDFILE_CHUNK_SIZE);
-#endif
-    *nbytes = written;
-    return check_error(retval, errInfo);
-}
-#endif /* HAVE_SENDFILE */
-
-#ifdef HAVE_POSIX_FALLOCATE
-static int
-call_posix_fallocate(int fd, Sint64 offset, Sint64 length)
-{
-    int ret;
-
-    /*
-     * On Linux and Solaris for example, posix_fallocate() returns
-     * a positive error number on error and it does not set errno.
-     * On FreeBSD however (9.0 at least), it returns -1 on error
-     * and it sets errno.
-     */
-    do {
-        ret = posix_fallocate(fd, (off_t) offset, (off_t) length);
-        if (ret > 0) {
-            errno = ret;
-            ret = -1;
-        }
-    } while (ret != 0 && errno == EINTR);
-
-    return ret;
-}
-#endif /* HAVE_POSIX_FALLOCATE */
-
-int
-efile_fallocate(Efile_error* errInfo, int fd, Sint64 offset, Sint64 length)
-{
-#if defined HAVE_FALLOCATE
-    /* Linux specific, more efficient than posix_fallocate. */
-    int ret;
-
-    do {
-        ret = fallocate(fd, FALLOC_FL_KEEP_SIZE, (off_t) offset, (off_t) length);
-    } while (ret != 0 && errno == EINTR);
-
-#if defined HAVE_POSIX_FALLOCATE
-    /* Fallback to posix_fallocate if available. */
-    if (ret != 0) {
-        ret = call_posix_fallocate(fd, offset, length);
-    }
-#endif
-
-    return check_error(ret, errInfo);
-#elif defined F_PREALLOCATE
-    /* Mac OS X specific, equivalent to posix_fallocate. */
-    int ret;
-    fstore_t fs;
-
-    memset(&fs, 0, sizeof(fs));
-    fs.fst_flags = F_ALLOCATECONTIG;
-    fs.fst_posmode = F_VOLPOSMODE;
-    fs.fst_offset = (off_t) offset;
-    fs.fst_length = (off_t) length;
-
-    ret = fcntl(fd, F_PREALLOCATE, &fs);
-
-    if (-1 == ret) {
-        fs.fst_flags = F_ALLOCATEALL;
-        ret = fcntl(fd, F_PREALLOCATE, &fs);
-
-#if defined HAVE_POSIX_FALLOCATE
-        /* Fallback to posix_fallocate if available. */
-        if (-1 == ret) {
-            ret = call_posix_fallocate(fd, offset, length);
-        }
-#endif
-    }
-
-    return check_error(ret, errInfo);
-#elif defined HAVE_POSIX_FALLOCATE
-    /* Other Unixes, use posix_fallocate if available. */
-    return check_error(call_posix_fallocate(fd, offset, length), errInfo);
-#else
-    errno = ENOTSUP;
-    return check_error(-1, errInfo);
-#endif
-}
diff --git a/erts/emulator/drivers/win32/win_efile.c b/erts/emulator/drivers/win32/win_efile.c
deleted file mode 100644
index 2d366b5833..0000000000
--- a/erts/emulator/drivers/win32/win_efile.c
+++ /dev/null
@@ -1,2058 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 1997-2016. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-/*
- * Purpose: Provides file and directory operations for Windows.
- */
-
-#include <windows.h>
-#ifdef HAVE_CONFIG_H
-#  include "config.h"
-#endif
-#include "sys.h"
-#include <ctype.h>
-#include <wchar.h>
-#include "erl_efile.h"
-
-#define DBG_TRACE_MASK 0
-/* 1 = file name ops
- * 2 = file descr ops
- * 4 = errors
- * 8 = path name conversion
- */
-#if !DBG_TRACE_MASK
-#  define DBG_TRACE(M,S)
-#  define DBG_TRACE1(M,FMT,A)
-#  define DBG_TRACE2(M,FMT,A,B)
-#else
-#  define DBG_TRACE(M,S) do { if ((M)&DBG_TRACE_MASK) fwprintf(stderr, L"DBG_TRACE %d: %s\r\n", __LINE__, (WCHAR*)(S)); }while(0)
-#  define DBG_TRACE1(M,FMT,A) do { if ((M)&DBG_TRACE_MASK) fwprintf(stderr, L"DBG_TRACE %d: " L##FMT L"\r\n", __LINE__, (A)); }while(0)
-#  define DBG_TRACE2(M,FMT,A,B) do { if ((M)&DBG_TRACE_MASK) fwprintf(stderr, L"DBG_TRACE %d: " L##FMT L"\r\n", __LINE__, (A), (B)); }while(0)
-#endif
-
-/*
- * Microsoft-specific function to map a WIN32 error code to a Posix errno.
- */
-
-#define ISSLASH(a)  ((a) == L'\\' || (a) == L'/')
-#define ISDIR(st) (((st).st_mode&S_IFMT) == S_IFDIR)
-#define ISREG(st) (((st).st_mode&S_IFMT) == S_IFREG)
-
-#define IS_DOT_OR_DOTDOT(s) \
-    ((s)[0] == L'.' && ((s)[1] == L'\0' || ((s)[1] == L'.' && (s)[2] == L'\0')))
-
-#define FILE_SHARE_FLAGS (FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE)
-
-#ifndef INVALID_FILE_ATTRIBUTES
-#define INVALID_FILE_ATTRIBUTES ((DWORD) 0xFFFFFFFF)
-#endif
-
-#define TICKS_PER_SECOND (10000000ULL)
-#define EPOCH_DIFFERENCE (11644473600LL)
-
-#define FILETIME_TO_EPOCH(epoch, ft) \
-    do { \
-	ULARGE_INTEGER ull; \
-	ull.LowPart  = (ft).dwLowDateTime; \
-	ull.HighPart = (ft).dwHighDateTime; \
-	(epoch) = ((ull.QuadPart / TICKS_PER_SECOND) - EPOCH_DIFFERENCE); \
-    } while(0)
-
-#define EPOCH_TO_FILETIME(ft, epoch) \
-    do { \
-	ULARGE_INTEGER ull; \
-	ull.QuadPart = (((epoch) + EPOCH_DIFFERENCE) * TICKS_PER_SECOND); \
-	(ft).dwLowDateTime = ull.LowPart; \
-	(ft).dwHighDateTime = ull.HighPart; \
-    } while(0)
-
-
-static int check_error(int result, Efile_error* errInfo);
-static int set_error(Efile_error* errInfo);
-static int set_os_errno(Efile_error* errInfo, DWORD os_errno);
-static int is_root_unc_name(const WCHAR *path);
-static int extract_root(WCHAR *name);
-static unsigned short dos_to_posix_mode(int attr, const WCHAR *name);
-
-
-struct wpath_tmp_buffer {
-    struct wpath_tmp_buffer* next;
-    WCHAR buffer[1];
-};
-
-typedef struct {
-    Efile_error* errInfo;
-    struct wpath_tmp_buffer* buf_list;
-}Efile_call_state;
-
-static void call_state_init(Efile_call_state* state, Efile_error* errInfo)
-{
-    state->errInfo = errInfo;
-    state->buf_list = NULL;
-}
-static WCHAR* wpath_tmp_alloc(Efile_call_state* state, size_t len)
-{
-    size_t sz = offsetof(struct wpath_tmp_buffer, buffer)
-	+ (len+1)*sizeof(WCHAR);
-    struct wpath_tmp_buffer* p = driver_alloc(sz);
-    p->next = state->buf_list;
-    state->buf_list = p;
-    return p->buffer;
-}
-static void call_state_free(Efile_call_state* state)
-{
-    while(state->buf_list) {
-	struct wpath_tmp_buffer* next = state->buf_list->next;
-	driver_free(state->buf_list);
-	state->buf_list = next;
-    }
-}
-static WCHAR* get_cwd_wpath_tmp(Efile_call_state* state)
-{
-    WCHAR dummy;
-    DWORD size = GetCurrentDirectoryW(0, &dummy);
-    WCHAR* ret = NULL;
-
-    if (size) {
-	ret = wpath_tmp_alloc(state, size);
-	if (!GetCurrentDirectoryW(size, ret)) {
-	    ret = NULL;
-	}
-    }
-    return ret;
-}
-static WCHAR* get_full_wpath_tmp(Efile_call_state* state,
-                                 const WCHAR* file,
-				 WCHAR** file_part,
-				 DWORD extra)
-{
-    WCHAR dummy;
-    DWORD size = GetFullPathNameW(file, 0, &dummy, NULL);
-    WCHAR* ret = NULL;
-
-    if (size) {
-	int ok;
-	ret = wpath_tmp_alloc(state, size + extra);
-	if (file_part) {
-	    ok = (GetFullPathNameW(file, size, ret, file_part) != 0);
-	}
-	else {
-	    ok = (_wfullpath(ret, file, size) != NULL);
-	}
-	if (!ok) {
-	    ret = NULL;
-	}
-    }
-    return ret;
-}
-
-static void ensure_wpath_max(Efile_call_state* state, WCHAR** pathp, size_t max);
-static int do_rmdir(Efile_call_state*, char* name);
-static int do_rename(Efile_call_state*, char* src, char* dst);
-static int do_readdir(Efile_call_state*, char* name, EFILE_DIR_HANDLE*, char* buffer, size_t *size);
-static int do_fileinfo(Efile_call_state*, Efile_info*, char* orig_name, int info_for_link);
-static char* do_readlink(Efile_call_state*, char* name, char* buffer, size_t size);
-static int do_altname(Efile_call_state*, char* orig_name, char* buffer, size_t size);
-
-
-static int errno_map(DWORD last_error) {
-
-    switch (last_error) {
-    case ERROR_SUCCESS:
-	return 0;
-    case ERROR_INVALID_FUNCTION:
-    case ERROR_INVALID_DATA:
-    case ERROR_INVALID_PARAMETER:
-    case ERROR_INVALID_TARGET_HANDLE:
-    case ERROR_INVALID_CATEGORY:
-    case ERROR_NEGATIVE_SEEK:
-	return EINVAL;
-    case ERROR_DIR_NOT_EMPTY:
-	return EEXIST;
-    case ERROR_BAD_FORMAT:
-	return ENOEXEC;
-    case ERROR_PATH_NOT_FOUND:
-    case ERROR_FILE_NOT_FOUND:
-    case ERROR_NO_MORE_FILES:
-	return ENOENT;
-    case ERROR_TOO_MANY_OPEN_FILES:
-	return EMFILE;
-    case ERROR_ACCESS_DENIED:
-    case ERROR_INVALID_ACCESS:
-    case ERROR_CURRENT_DIRECTORY:
-    case ERROR_SHARING_VIOLATION:
-    case ERROR_LOCK_VIOLATION:
-    case ERROR_INVALID_PASSWORD:
-    case ERROR_DRIVE_LOCKED:
-	return EACCES;
-    case ERROR_INVALID_HANDLE:
-	return EBADF;
-    case ERROR_NOT_ENOUGH_MEMORY:
-    case ERROR_OUTOFMEMORY:
-    case ERROR_OUT_OF_STRUCTURES:
-	return ENOMEM;
-    case ERROR_INVALID_DRIVE:
-    case ERROR_BAD_UNIT:
-    case ERROR_NOT_READY:
-    case ERROR_REM_NOT_LIST:
-    case ERROR_DUP_NAME:
-    case ERROR_BAD_NETPATH:
-    case ERROR_NETWORK_BUSY:
-    case ERROR_DEV_NOT_EXIST:
-    case ERROR_BAD_NET_NAME:
-	return ENXIO;
-    case ERROR_NOT_SAME_DEVICE:
-	return EXDEV;
-    case ERROR_WRITE_PROTECT:
-	return EROFS;
-    case ERROR_BAD_LENGTH:
-    case ERROR_BUFFER_OVERFLOW:
-	return E2BIG;
-    case ERROR_SEEK:
-    case ERROR_SECTOR_NOT_FOUND:
-	return ESPIPE;
-    case ERROR_NOT_DOS_DISK:
-	return ENODEV;
-    case ERROR_GEN_FAILURE:
-	return ENODEV;
-    case ERROR_SHARING_BUFFER_EXCEEDED:
-    case ERROR_NO_MORE_SEARCH_HANDLES:
-	return EMFILE;
-    case ERROR_HANDLE_EOF:
-    case ERROR_BROKEN_PIPE:
-	return EPIPE;
-    case ERROR_HANDLE_DISK_FULL:
-    case ERROR_DISK_FULL:
-	return ENOSPC;
-    case ERROR_NOT_SUPPORTED:
-	return ENOTSUP;
-    case ERROR_FILE_EXISTS:
-    case ERROR_ALREADY_EXISTS:
-    case ERROR_CANNOT_MAKE:
-	return EEXIST;
-    case ERROR_ALREADY_ASSIGNED:
-	return EBUSY;
-    case ERROR_NO_PROC_SLOTS:
-	return EAGAIN;
-    case ERROR_CANT_RESOLVE_FILENAME:
-	return EMLINK;
-    case ERROR_PRIVILEGE_NOT_HELD:
-	return EPERM;
-    case ERROR_ARENA_TRASHED:
-    case ERROR_INVALID_BLOCK:
-    case ERROR_BAD_ENVIRONMENT:
-    case ERROR_BAD_COMMAND:
-    case ERROR_CRC:
-    case ERROR_OUT_OF_PAPER:
-    case ERROR_READ_FAULT:
-    case ERROR_WRITE_FAULT:
-    case ERROR_WRONG_DISK:
-    case ERROR_NET_WRITE_FAULT:
-	return EIO;
-    default: /* not to do with files I expect. */
-	return EIO;
-    }	
-}
-
-static int
-check_error(int result, Efile_error* errInfo)
-{
-    if (result < 0) {
-	errInfo->posix_errno = errno;
-	errInfo->os_errno = GetLastError();
-	DBG_TRACE2(4, "ERROR os_error=%d errno=%d @@@@@@@@@@@@@@@@@@@@@@@@@@@@",
-	        errInfo->os_errno, errInfo->posix_errno);
-	return 0;
-    }
-    return 1;
-}
-
-static void
-save_last_error(Efile_error* errInfo)
-{
-    errInfo->posix_errno = errno;
-    errInfo->os_errno = GetLastError();
-    DBG_TRACE2(4, "ERROR os_error=%d errno=%d $$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
-	errInfo->os_errno, errInfo->posix_errno);
-}
-
-
-/*
- * Fills the provided error information structure with information
- * with the error code given by GetLastError() and its corresponding
- * Posix error number.
- *
- * Returns 0.
- */
-
-static int
-set_error(Efile_error* errInfo)
-{
-    set_os_errno(errInfo, GetLastError());
-    return 0;
-}
-
-
-static int
-set_os_errno(Efile_error* errInfo, DWORD os_errno)
-{
-    errInfo->os_errno = os_errno;
-    errInfo->posix_errno = errno_map(os_errno);
-    DBG_TRACE2(4, "ERROR os_error=%d errno=%d ############################",
-	    errInfo->os_errno, errInfo->posix_errno);
-    return 0;
-}
-
-int
-efile_init() {
-   return 1;
-}
-
-/*
- * A writev with Unix semantics, but with Windows arguments 
- */
-static int 
-win_writev(Efile_error* errInfo,
-	   HANDLE fd,                  /* handle to file */
-	   FILE_SEGMENT_ELEMENT iov[], /* array of buffer pointers */
-	   DWORD *size)                /* number of bytes to write */
-{
-    OVERLAPPED ov;
-    ov.Offset = 0L;
-    ov.OffsetHigh = 0L;
-    ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
-    if (ov.hEvent == NULL)
-	return set_error(errInfo);
-    if (! write_file_gather(fd, iov, *size, NULL, &ov))
-	return set_error(errInfo);
-    if (WaitForSingleObject(ov.hEvent, INFINITE) != WAIT_OBJECT_0)
-	return set_error(errInfo);
-    if (! GetOverlappedResult(fd, &ov, size, FALSE))
-	return set_error(errInfo);
-    return 1;
-}
-
-
-/* Check '*pathp' and convert it if needed to something that windows will accept.
- * Typically use UNC path with \\?\ prefix if absolute path is longer than 260.
- */
-static void ensure_wpath(Efile_call_state* state, WCHAR** pathp)
-{
-    ensure_wpath_max(state, pathp, MAX_PATH);
-}
-
-static void ensure_wpath_max(Efile_call_state* state, WCHAR** pathp, size_t max)
-{
-    WCHAR* path = *pathp;
-    WCHAR* p;
-    size_t len = wcslen(path);
-    int unc_fixup = 0;
-
-    if (path[0] == 0) {
-	DBG_TRACE(8, L"Let empty path pass through");
-	return;
-    }
-
-    DBG_TRACE1(8,"IN: %s", path);
-
-    if (path[1] == L':' && ISSLASH(path[2])) { /* absolute path */
-	if (len >= max) {
-	    WCHAR *src, *dst;
-
-	    *pathp = wpath_tmp_alloc(state, 4+len+1);
-	    dst = *pathp;
-	    wcscpy(dst, L"\\\\?\\");
-	    for (src=path,dst+=4; *src; src++) {
-		if (*src == L'/') {
-		    if (dst[-1] != L'\\') {
-			*dst++ =  L'\\';
-		    }
-		    /*else ignore redundant slashes */
-		}
-		else
-		    *dst++ = *src;
-	    }
-	    *dst = 0;
-	    unc_fixup = 1;
-	}
-    }
-    else if (!(ISSLASH(path[0]) && ISSLASH(path[1]))) { /* relative path */
-	DWORD cwdLen = GetCurrentDirectoryW(0, NULL);
-	DWORD absLen = cwdLen + 1 + len;
-	if (absLen >= max) {
-	    WCHAR *fullPath = wpath_tmp_alloc(state, 4+4+absLen);
-	    DWORD fullLen;
-
-	    fullLen = GetFullPathNameW(path, 4 + absLen, fullPath+4, NULL);
-	    if (fullLen >= 4+absLen) {
-		*pathp = path;
-		DBG_TRACE2(8,"ensure_wpath FAILED absLen=%u %s", (int)absLen, path);
-		return;
-	    }
-	    /* GetFullPathNameW can return paths longer than MAX_PATH without the \\?\ prefix.
-	     * At least seen on Windows 7. Go figure...
-	     */
-	    if (fullLen >= max && wcsncmp(fullPath+4, L"\\\\?\\", 4) != 0) {
-		wcsncpy(fullPath, L"\\\\?\\", 4);
-		*pathp = fullPath;
-	    }
-	    else {
-		*pathp = fullPath + 4;
-	    }
-	}
-    }
-
-    if (unc_fixup) {
-	WCHAR* endp;
-
-	p = *pathp;
-	len = wcslen(p);
-	endp = p + len;
-	if (len > 4) {
-	    p += 4;
-	    while (*p) {
-		if (p[0] == L'\\' && p[1] == L'.') {
-		    if (p[2] == L'\\' || !p[2]) { /* single dot */
-			wmemmove(p, p+2, (&endp[1] - &p[2]));
-			endp -= 2;
-		    }
-		    else if (p[2] == L'.' && (p[3] == L'\\' || !p[3])) { /* double dot */
-			WCHAR* r;
-			for (r=p-1; *r == L'\\'; --r)
-			    /*skip redundant slashes*/;
-			for (; *r != L'\\'; --r)
-			    /*find start of prev directory*/;
-			if (r < *pathp + 6)
-			    break;
-			wmemmove(r, p+3, (&endp[1] - &p[3]));
-			p = r;
-		    }
-		    else p += 3;
-		}
-		else ++p;
-	    }
-	}
-    }
-    DBG_TRACE1(8,"OUT: %s", *pathp);
-}
-
-int
-efile_mkdir(Efile_error* errInfo,	/* Where to return error codes. */
-	    char* name)			/* Name of directory to create. */
-{
-    Efile_call_state state;
-    WCHAR* wname = (WCHAR*)name;
-    int ret;
-
-    DBG_TRACE(1, name);
-    call_state_init(&state, errInfo);
-    ensure_wpath_max(&state, &wname, 248); /* Yes, 248 limit for normal paths */
-
-    ret = (int) CreateDirectoryW(wname, NULL);
-    if (!ret)
-	set_error(errInfo);
-
-    call_state_free(&state);
-    return ret;
-}
-
-int
-efile_rmdir(Efile_error* errInfo,	/* Where to return error codes. */
-	    char* name)			/* Name of directory to delete. */
-{
-    Efile_call_state state;
-    int ret;
-
-    DBG_TRACE(1, name);
-    call_state_init(&state, errInfo);
-    ret = do_rmdir(&state, name);
-    call_state_free(&state);
-    return ret;
-}
-
-static int do_rmdir(Efile_call_state* state, char* name)
-{
-    OSVERSIONINFO os;
-    DWORD attr;
-    WCHAR *wname = (WCHAR *) name;
-    WCHAR *buffer = NULL;
-
-    ensure_wpath(state, &wname);
-
-    if (RemoveDirectoryW(wname) != FALSE) {
-	return 1;
-    }
-    errno = errno_map(GetLastError());
-    if (errno == EACCES) {
-	attr = GetFileAttributesW(wname);
-	if (attr != (DWORD) -1) {
-	    if ((attr & FILE_ATTRIBUTE_DIRECTORY) == 0) {
-		/* 
-		 * Windows 95 reports calling RemoveDirectory on a file as an 
-		 * EACCES, not an ENOTDIR.
-		 */
-		
-		errno = ENOTDIR;
-		goto end;
-	    }
-
-	    /* 
-	     * Windows 95 reports removing a non-empty directory as
-	     * an EACCES, not an EEXIST.  If the directory is not empty,
-	     * change errno so caller knows what's going on.
-	     */
-
-	    os.dwOSVersionInfoSize = sizeof(os);
-	    GetVersionEx(&os);
-	    if (os.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) {
-		HANDLE handle;
-		WIN32_FIND_DATAW data;
-		int len = wcslen(wname);
-
-		buffer = wpath_tmp_alloc(state, len + 4);
-		wcscpy(buffer, wname);
-		if (buffer[0] && buffer[len-1] != L'\\' && buffer[len-1] != L'/') {
-		    wcscat(buffer, L"\\");
-		}
-		wcscat(buffer, L"*.*");
-		handle = FindFirstFileW(buffer, &data);
-		if (handle != INVALID_HANDLE_VALUE) {
-		    while (1) {
-			if ((wcscmp(data.cFileName, L".") != 0)
-				&& (wcscmp(data.cFileName, L"..") != 0)) {
-			    /*
-			     * Found something in this directory.
-			     */
-
-			    errno = EEXIST;
-			    break;
-			}
-			if (FindNextFileW(handle, &data) == FALSE) {
-			    break;
-			}
-		    }
-		    FindClose(handle);
-		}
-	    }
-	}
-    }
-
-    if (errno == ENOTEMPTY) {
-	/* 
-	 * Posix allows both EEXIST or ENOTEMPTY, but we'll always
-	 * return EEXIST to allow easy matching in Erlang code.
-	 */
-
-	errno = EEXIST;
-    }
-
- end:
-    save_last_error(state->errInfo);
-    return 0;
-}
-
-int
-efile_delete_file(Efile_error* errInfo,		/* Where to return error codes. */
-		  char* name)			/* Name of file to delete. */
-{
-    Efile_call_state state;
-    int ret;
-    DBG_TRACE(1, name);
-    call_state_init(&state, errInfo);
-    ret = do_delete_file(&state, name);
-    call_state_free(&state);
-    return ret;
-}
-
-static int do_delete_file(Efile_call_state* state, char* name)
-{
-    DWORD attr;
-    WCHAR *wname = (WCHAR *) name;
-
-    ensure_wpath(state, &wname);
-
-    if (DeleteFileW(wname) != FALSE) {
-	return 1;
-    }
-
-    errno = errno_map(GetLastError());
-    if (errno == EACCES) {
-        attr = GetFileAttributesW(wname);
-	if (attr != (DWORD) -1) {
-	    if (attr & FILE_ATTRIBUTE_DIRECTORY) {
-		/*
-		 * Windows NT reports removing a directory as EACCES instead
-		 * of EPERM.
-		 */
-
-		errno = EPERM;
-	    }
-	}
-    } else if (errno == ENOENT) {
-        attr = GetFileAttributesW(wname);
-	if (attr != (DWORD) -1) {
-	    if (attr & FILE_ATTRIBUTE_DIRECTORY) {
-	    	/*
-		 * Windows 95 reports removing a directory as ENOENT instead 
-		 * of EPERM.
-		 */
-
-		errno = EPERM;
-	    }
-	}
-    } else if (errno == EINVAL) {
-	/*
-	 * Windows NT reports removing a char device as EINVAL instead of
-	 * EACCES.
-	 */
-	
-	errno = EACCES;
-    }
-
-    return check_error(-1, state->errInfo);
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- *      Changes the name of an existing file or directory, from src to dst.
- *	If src and dst refer to the same file or directory, does nothing
- *	and returns success.  Otherwise if dst already exists, it will be
- *	deleted and replaced by src subject to the following conditions:
- *	    If src is a directory, dst may be an empty directory.
- *	    If src is a file, dst may be a file.
- *	In any other situation where dst already exists, the rename will
- *	fail.  
- *
- *	Some possible error codes:
- *
- *	EACCES:     src or dst parent directory can't be read and/or written.
- *	EEXIST:	    dst is a non-empty directory.
- *	EINVAL:	    src is a root directory or dst is a subdirectory of src.
- *	EISDIR:	    dst is a directory, but src is not.
- *	ENOENT:	    src doesn't exist, or src or dst is "".
- *	ENOTDIR:    src is a directory, but dst is not.  
- *	EXDEV:	    src and dst are on different filesystems.
- *	
- * Side effects:
- *	The implementation of rename may allow cross-filesystem renames,
- *	but the caller should be prepared to emulate it with copy and
- *	delete if errno is EXDEV.
- *
- *---------------------------------------------------------------------------
- */
-
-int
-efile_rename(Efile_error* errInfo, char* src, char* dst)
-{
-    Efile_call_state state;
-    int ret;
-    DBG_TRACE(1, src);
-    call_state_init(&state, errInfo);
-    ret = do_rename(&state, src, dst);
-    call_state_free(&state);
-    return ret;
-}
-
-static int
-do_rename(Efile_call_state* state,
-	  char* src,			/* Original name. */
-	  char* dst)			/* New name. */
-{
-    DWORD srcAttr, dstAttr;
-    WCHAR *wsrc = (WCHAR *) src;
-    WCHAR *wdst = (WCHAR *) dst;
-
-    ensure_wpath(state, &wsrc);
-    ensure_wpath(state, &wdst);
-
-    if (MoveFileW(wsrc, wdst) != FALSE) {
-	return 1;
-    }
-
-    errno = errno_map(GetLastError());
-    srcAttr = GetFileAttributesW(wsrc);
-    dstAttr = GetFileAttributesW(wdst);
-    if (srcAttr == (DWORD) -1) {
-	srcAttr = 0;
-    }
-    if (dstAttr == (DWORD) -1) {
-	dstAttr = 0;
-    }
-
-    if (errno == EBADF) {
-	errno = EACCES;
-	return check_error(-1, state->errInfo);
-    }
-    if (errno == EACCES) {
-	decode:
-	if (srcAttr & FILE_ATTRIBUTE_DIRECTORY) {
-	    WCHAR *srcPath, *dstPath;
-	    WCHAR *srcRest, *dstRest;
-	    int size;
-
-	    srcPath = get_full_wpath_tmp(state, wsrc, &srcRest, 0);
-	    if (!srcPath) {
-		save_last_error(state->errInfo);
-		return 0;
-	    }
-
-	    dstPath = get_full_wpath_tmp(state, wdst, &dstRest, 0);
-	    if (!dstPath) {
-		save_last_error(state->errInfo);
-		return 0;
-	    }
-
-	    if (srcRest == NULL) {
-		srcRest = srcPath + wcslen(srcPath);
-	    }
-	    if (_wcsnicmp(srcPath, dstPath, srcRest - srcPath) == 0) {
-		/*
-		 * Trying to move a directory into itself.
-		 */
-
-		errno = EINVAL;
-	    }
-	    if (extract_root(srcPath)) {
-		/*
-		 * Attempt to move a root directory.  Never allowed.
-		 */
-		errno = EINVAL;
-	    }
-
-	    (void) extract_root(dstPath);
-	    if (dstPath[0] == L'\0') {
-		/*
-		 * The filename was invalid.  (Don't know why,
-		 * but play it safe.)
-		 */
-		errno = EINVAL;
-	    }
-	    if (_wcsicmp(srcPath, dstPath) != 0) {
-		/*
-		 * If src is a directory and dst filesystem != src
-		 * filesystem, errno should be EXDEV.  It is very
-		 * important to get this behavior, so that the caller
-		 * can respond to a cross filesystem rename by
-		 * simulating it with copy and delete.  The MoveFile
-		 * system call already handles the case of moving a
-		 * *file* between filesystems.
-		 */
-
-		errno = EXDEV;
-	    }
-	}
-
-	/*
-	 * Other types of access failure is that dst is a read-only
-	 * filesystem, that an open file referred to src or dest, or that
-	 * src or dest specified the current working directory on the
-	 * current filesystem.  EACCES is returned for those cases.
-	 */
-
-    } else if (errno == EEXIST) {
-	/*
-	 * Reports EEXIST any time the target already exists.  If it makes
-	 * sense, remove the old file and try renaming again.
-	 */
-
-	if (srcAttr & FILE_ATTRIBUTE_DIRECTORY) {
-	    if (dstAttr & FILE_ATTRIBUTE_DIRECTORY) {
-		/*
-		 * Overwrite empty dst directory with src directory.  The
-		 * following call will remove an empty directory.  If it
-		 * fails, it's because it wasn't empty.
-		 */
-
-		if (RemoveDirectoryW(wdst)) {
-		    /*
-		     * Now that that empty directory is gone, we can try
-		     * renaming again.  If that fails, we'll put this empty
-		     * directory back, for completeness.
-		     */
-
-		    if (MoveFileW(wsrc, wdst) != FALSE) {
-			return 1;
-		    }
-
-		    /*
-		     * Some new error has occurred.  Don't know what it
-		     * could be, but report this one.
-		     */
-
-		    errno = errno_map(GetLastError());
-		    CreateDirectoryW(wdst, NULL);
-		    SetFileAttributesW(wdst, dstAttr);
-		    if (errno == EACCES) {
-			/*
-			 * Decode the EACCES to a more meaningful error.
-			 */
-
-			goto decode;
-		    }
-		}
-	    } else {	/* (dstAttr & FILE_ATTRIBUTE_DIRECTORY) == 0 */
-		errno = ENOTDIR;
-	    }
-	} else {    /* (srcAttr & FILE_ATTRIBUTE_DIRECTORY) == 0 */
-	    if (dstAttr & FILE_ATTRIBUTE_DIRECTORY) {
-		errno = EISDIR;
-	    } else {
-		/*
-		 * Overwrite existing file by:
-		 * 
-		 * 1. Rename existing file to temp name.
-		 * 2. Rename old file to new name.
-		 * 3. If success, delete temp file.  If failure,
-		 *    put temp file back to old name.
-		 */
-
-		WCHAR *tempName;
-		int result;
-		WCHAR *rest;
-		
-		tempName = get_full_wpath_tmp(state, wdst, &rest, 14);
-		if (!tempName || !rest) {
-		    save_last_error(state->errInfo);
-		    return 0;
-		}
-
-		*rest = L'\0';
-		result = -1;
-		if (GetTempFileNameW(tempName, L"erlr", 0, tempName) != 0) {
-		    /*
-		     * Strictly speaking, need the following DeleteFile and
-		     * MoveFile to be joined as an atomic operation so no
-		     * other app comes along in the meantime and creates the
-		     * same temp file.
-		     */
-		     
-		    DeleteFileW(tempName);
-		    if (MoveFileW(wdst, tempName) != FALSE) {
-			if (MoveFileW(wsrc, wdst) != FALSE) {
-			    SetFileAttributesW(tempName, FILE_ATTRIBUTE_NORMAL);
-			    DeleteFileW(tempName);
-			    return 1;
-			} else {
-			    DeleteFileW(wdst);
-			    MoveFileW(tempName, wdst);
-			}
-		    } 
-
-		    /*
-		     * Can't backup dst file or move src file.  Return that
-		     * error.  Could happen if an open file refers to dst.
-		     */
-
-		    errno = errno_map(GetLastError());
-		    if (errno == EACCES) {
-			/*
-			 * Decode the EACCES to a more meaningful error.
-			 */
-			goto decode;
-		    }
-		}
-		return result;
-	    }
-	}
-    }
-    return check_error(-1, state->errInfo);
-}
-
-int
-efile_chdir(Efile_error* errInfo,	/* Where to return error codes. */
-	    char* name)			/* Name of directory to make current. */
-{

-    /* We don't even try to handle long paths here

-     * as current working directory is always limited to MAX_PATH

-     * even if we use UNC paths and SetCurrentDirectoryW()

-     */

-    int success = check_error(_wchdir((WCHAR *) name), errInfo);

-    if (!success && errInfo->posix_errno == EINVAL)

-	/* POSIXification of errno */

-	errInfo->posix_errno = ENOENT;
-    return success;
-}
-
-int
-efile_getdcwd(Efile_error* errInfo,		/* Where to return error codes. */
-	      int drive,			/* 0 - current, 1 - A, 2 - B etc. */
-	      char* buffer,			/* Where to return the current directory. */
-	      size_t size)			/* Size of buffer. */
-{
-    WCHAR *wbuffer = (WCHAR *) buffer;
-    size_t wbuffer_size = size / 2; 
-    DBG_TRACE(1, L"#getdcwd#");
-    if (_wgetdcwd(drive, wbuffer, wbuffer_size) == NULL) {
-	return check_error(-1, errInfo);
-    }
-    DBG_TRACE1(8, "getdcwd OS=%s", wbuffer);
-    if (wcsncmp(wbuffer, L"\\\\?\\", 4) == 0) {
-	wmemmove(wbuffer, wbuffer+4, wcslen(wbuffer+4)+1);
-    }
-    for ( ; *wbuffer; wbuffer++) 
-	if (*wbuffer == L'\\')
-	    *wbuffer = L'/';
-    DBG_TRACE1(8, "getdcwd ERLANG=%s", (WCHAR*)buffer);
-    return 1;
-}
-
-int
-efile_readdir(Efile_error* errInfo, char* name, EFILE_DIR_HANDLE* dir_handle,
-	      char* buffer, size_t *size)
-{
-    Efile_call_state state;
-    int ret;
-    DBG_TRACE(dir_handle?2:1, name);
-    call_state_init(&state, errInfo);
-    ret = do_readdir(&state, name, dir_handle, buffer, size);
-    call_state_free(&state);
-    return ret;
-}
-
-static int do_readdir(Efile_call_state* state,
-                      char* name,                   /* Name of directory to list */
-		      EFILE_DIR_HANDLE* dir_handle, /* Handle of opened directory or NULL */
-		      char* buffer,                 /* Buffer to put one filename in */
-		      size_t *size)                 /* in-out size of buffer/size of filename excluding zero
-					               termination in bytes*/
-{
-    HANDLE dir;			/* Handle to directory. */
-    WIN32_FIND_DATAW findData;	/* Data found by FindFirstFile() or FindNext(). */
-    /* Alignment is not honored, this works on x86 because of alignment fixup by processor.
-       Not perfect, but faster than alinging by hand (really) */
-    WCHAR *wbuffer = (WCHAR *) buffer;
-
-    /*
-     * First time we must setup everything.
-     */
-
-    if (*dir_handle == NULL) {
-	WCHAR *wname = (WCHAR *) name;
-	WCHAR* wildcard;
-	int length;
-	WCHAR* s;
-
-	ensure_wpath_max(state, &wname, MAX_PATH-2);
-	length = wcslen(wname);
-
-	wildcard = wpath_tmp_alloc(state, length+3);
-
-	wcscpy(wildcard, wname);
-	s = wildcard+length-1;
-	if (*s != L'/' && *s != L'\\')
-	    *++s = L'\\';
-	*++s = L'*';
-	*++s = L'\0';
-	DEBUGF(("Reading %ws\n", wildcard));
-	dir = FindFirstFileW(wildcard, &findData);
-	if (dir == INVALID_HANDLE_VALUE) {
-	    set_error(state->errInfo);
-	    return 0;
-	}
-	*dir_handle = (EFILE_DIR_HANDLE) dir;
-
-	if (!IS_DOT_OR_DOTDOT(findData.cFileName)) {
-	    wcscpy(wbuffer, findData.cFileName);
-	    *size = wcslen(wbuffer)*2;
-	    return 1;
-	}
-    }
-
-    /*
-     * Retrieve the name of the next file using the directory handle.
-     */
-
-    dir = (HANDLE) *dir_handle;
-
-    for (;;) {
-	if (FindNextFileW(dir, &findData)) {
-	    if (IS_DOT_OR_DOTDOT(findData.cFileName))
-		continue;
-	    wcscpy(wbuffer, findData.cFileName);
-	    *size = wcslen(wbuffer)*2;
-	    return 1;
-	}
-
-	if (GetLastError() == ERROR_NO_MORE_FILES) {
-	    state->errInfo->posix_errno = state->errInfo->os_errno = 0;
-	}
-	else {
-	    set_error(state->errInfo);
-	}
-	FindClose(dir);
-	return 0;
-    }
-}
-
-int
-efile_openfile(Efile_error* errInfo, char* name, int flags, int* pfd, Sint64* pSize)
-{
-    Efile_call_state state;
-    int ret;
-    DBG_TRACE1(1, "openfile(%s)", name);
-    call_state_init(&state, errInfo);
-    ret = do_openfile(&state, name, flags, pfd, pSize);
-    call_state_free(&state);
-    return ret;
-}
-
-static
-int do_openfile(Efile_call_state* state,        /* Where to return error codes. */
-	        char* name,			/* Name of directory to open. */
-	        int flags,			/* Flags to use for opening. */
-	        int* pfd,			/* Where to store the file descriptor. */
-	        Sint64* pSize)			/* Where to store the size of the file. */
-{
-    Efile_error* errInfo = state->errInfo;
-    BY_HANDLE_FILE_INFORMATION fileInfo; /* File information from a handle. */
-    HANDLE fd;			/* Handle to open file. */
-    DWORD access;		/* Access mode: GENERIC_READ, GENERIC_WRITE. */
-    DWORD crFlags;
-    DWORD flagsAndAttrs = FILE_ATTRIBUTE_NORMAL;
-    WCHAR *wname = (WCHAR *) name;
-
-    switch (flags & (EFILE_MODE_READ|EFILE_MODE_WRITE)) {
-    case EFILE_MODE_READ:
-	access = GENERIC_READ;
-	crFlags = OPEN_EXISTING;
-	break;
-    case EFILE_MODE_WRITE:
-	access = GENERIC_WRITE;
-	crFlags = CREATE_ALWAYS;
-	break;
-    case EFILE_MODE_READ_WRITE:
-	access = GENERIC_READ|GENERIC_WRITE;
-	crFlags = OPEN_ALWAYS;
-	break;
-    default:
-	errno = EINVAL;
-	check_error(-1, errInfo);
-	return 0;
-    }
-
-    if (flags & EFILE_MODE_SYNC) {
-        flagsAndAttrs = FILE_FLAG_WRITE_THROUGH;
-    }
-
-    if (flags & EFILE_MODE_APPEND) {
-	crFlags = OPEN_ALWAYS;
-    }
-    if (flags & EFILE_MODE_EXCL) {
-	crFlags = CREATE_NEW;
-    }
-    ensure_wpath(state, &wname);
-    fd = CreateFileW(wname, access,
-		    FILE_SHARE_FLAGS,
-		    NULL, crFlags, flagsAndAttrs, NULL);
-
-    /*
-     * Check for errors.
-     */
-
-    if (fd == INVALID_HANDLE_VALUE) {
-	DWORD attr;
-
-	set_error(errInfo);
-
-	/*
-	 * If the error is EACESS, the reason could be that we tried to
-	 * open a directory.  In that case, we'll change the error code
-	 * to EISDIR.
-	 */
-	if (errInfo->posix_errno && 
-	    (attr = GetFileAttributesW(wname)) != INVALID_FILE_ATTRIBUTES && 
-	    (attr & FILE_ATTRIBUTE_DIRECTORY)) {
-	    errInfo->posix_errno = EISDIR;
-	}
-	return 0;
-    }
-
-    /*
-     * Get and return the length of the open file.
-     */
-       
-    if (!GetFileInformationByHandle(fd, &fileInfo))
-	return set_error(errInfo);
-    *pfd = (int) fd;
-    if (pSize) {
-	*pSize = (Sint64)
-	    (((Uint64)fileInfo.nFileSizeHigh << 32) | 
-	     (Uint64)fileInfo.nFileSizeLow);
-    }
-    return 1;
-}
-
-int 
-efile_may_openfile(Efile_error* errInfo, char *name)
-{
-    Efile_call_state state;
-    WCHAR *wname = (WCHAR *) name;
-    DWORD attr;
-    int ret;
-
-    DBG_TRACE(1, name);
-    call_state_init(&state, errInfo);
-    ensure_wpath(&state, &wname);
-    if ((attr = GetFileAttributesW(wname)) == INVALID_FILE_ATTRIBUTES) {
-	errno = ENOENT;
-	ret = check_error(-1, errInfo);
-    }
-    else if (attr & FILE_ATTRIBUTE_DIRECTORY) {
-	errno = EISDIR;
-	ret = check_error(-1, errInfo);
-    }
-    else ret = 1;
-
-    call_state_free(&state);
-    return ret;
-}
-
-void
-efile_closefile(fd)
-int fd;				/* File descriptor for file to close. */
-{
-    DBG_TRACE(2, L"");
-    CloseHandle((HANDLE) fd);
-}
-
-FILE* efile_wfopen(const WCHAR* name, const WCHAR* mode)
-{
-    Efile_call_state state;
-    Efile_error dummy;
-    FILE* f;
-    call_state_init(&state, &dummy);
-    ensure_wpath(&state, (WCHAR**)&name);
-    f = _wfopen(name, mode);
-    call_state_free(&state);
-    return f;
-}
-
-int
-efile_fdatasync(errInfo, fd)
-Efile_error* errInfo;		/* Where to return error codes. */
-int fd;				/* File descriptor for file to sync. */
-{
-    DBG_TRACE(2, L"");
-    /* Not available in Windows, just call regular fsync */
-    return efile_fsync(errInfo, fd);
-}
-
-int
-efile_fsync(errInfo, fd)
-Efile_error* errInfo;		/* Where to return error codes. */
-int fd;				/* File descriptor for file to sync. */
-{
-    DBG_TRACE(2, L"");
-    if (!FlushFileBuffers((HANDLE) fd)) {
-	return check_error(-1, errInfo);
-    }
-    return 1;
-}
-
-int
-efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo,
-	       char* orig_name, int info_for_link)
-{
-    Efile_call_state state;
-    int ret;
-    DBG_TRACE(1, L"");
-    call_state_init(&state, errInfo);
-    ret = do_fileinfo(&state, pInfo, orig_name, info_for_link);
-    call_state_free(&state);
-    return ret;
-}
-
-static int
-do_fileinfo(Efile_call_state* state, Efile_info* pInfo,
-	    char* orig_name, int info_for_link)
-{
-    Efile_error* errInfo = state->errInfo;
-    HANDLE findhandle;		/* Handle returned by FindFirstFile(). */
-    WIN32_FIND_DATAW findbuf;	/* Data return by FindFirstFile(). */
-    WCHAR* name = NULL;
-    WCHAR* win_path;
-    int name_len;
-    int drive;			/* Drive for filename (1 = A:, 2 = B: etc). */
-    WCHAR *worig_name = (WCHAR *) orig_name;
-
-    ensure_wpath(state, &worig_name);
-    /* Don't allow wildcards to be interpreted by system */
-
-
-    /*
-     * Move the name to a buffer and make sure to remove a trailing
-     * slash, because it causes FindFirstFile() to fail on Win95.
-     */
-
-    name_len = wcslen(worig_name);
-
-    name = wpath_tmp_alloc(state, name_len+1);
-    wcscpy(name, worig_name);
-    if (name_len > 2 && ISSLASH(name[name_len-1]) &&
-	name[name_len-2] != L':') {
-	name[name_len-1] = L'\0';
-    }
-
-    win_path = name;
-    if (wcsncmp(name, L"\\\\?\\", 4) == 0) {
-	win_path += 4;
-    }
-
-    if (wcspbrk(win_path, L"?*")) {
-    enoent:
-	errInfo->posix_errno = ENOENT;
-	errInfo->os_errno = ERROR_FILE_NOT_FOUND;
-        return 0;
-    }
-
-    /* Try to get disk from name.  If none, get current disk.  */
-
-    if (win_path[1] != L':') {
-	WCHAR* cwd_path = get_cwd_wpath_tmp(state);
-        drive = 0;
-	if (cwd_path[1] == L':') {
-	    drive = towlower(cwd_path[0]) - L'a' + 1;
-	}
-    } else if (*win_path && win_path[2] == L'\0') {
-	/*
-	 * X: and nothing more is an error.
-	 */
-	errInfo->posix_errno = ENOENT;
-	errInfo->os_errno = ERROR_FILE_NOT_FOUND;
-	return 0;
-    } else {
-        drive = towlower(*win_path) - L'a' + 1;
-    }
-
-    findhandle = FindFirstFileW(name, &findbuf);
-    if (findhandle == INVALID_HANDLE_VALUE) {
-	WCHAR* path = NULL;
-
-        if (!(wcspbrk(name, L"./\\") &&
-	      (path = get_full_wpath_tmp(state, name, NULL, 0)) &&
-	      /* root dir. ('C:\') or UNC root dir. ('\\server\share\') */
-	      ((wcslen(path) == 3) || is_root_unc_name(path)) &&
-	      (GetDriveTypeW(path) > 1)   ) ) {
-
-	    errInfo->posix_errno = ENOENT;
-	    errInfo->os_errno = ERROR_FILE_NOT_FOUND;
-	    return 0;
-	}
-
-        /*
-         * Root directories (such as C:\ or \\server\share\ are fabricated.
-         */
-	
-        findbuf.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY;
-        findbuf.nFileSizeHigh = 0;
-        findbuf.nFileSizeLow = 0;
-        findbuf.cFileName[0] = L'\0';
-
-	pInfo->links = 1;
-	pInfo->cTime = pInfo->accessTime = pInfo->modifyTime = 0;
-    } else {
-	SYSTEMTIME SystemTime;
-        FILETIME LocalFTime;
-
-	/*first check if we are a symlink */
-	if (!info_for_link && (findbuf.dwFileAttributes &
-			       FILE_ATTRIBUTE_REPARSE_POINT)){
-	    /*
-	     * given that we know this is a symlink,
-	     we should be able to find its target */
-	    WCHAR* target_name = (WCHAR*) do_readlink(state, (char *) name, NULL, 0);
-	    if (target_name) {
-		FindClose(findhandle);
-		return do_fileinfo(state, pInfo,
-				   (char *) target_name, info_for_link);
-	    }
-	}
-
-	/* number of links: */
-	{
-	    HANDLE handle;	/* Handle returned by CreateFile() */
-	    BY_HANDLE_FILE_INFORMATION fileInfo; /* from  CreateFile() */
-
-            /* We initialise nNumberOfLinks as GetFileInformationByHandle
-               does not always initialise this field */
-            fileInfo.nNumberOfLinks = 1;
-	    if (handle = CreateFileW(name, GENERIC_READ, FILE_SHARE_FLAGS, NULL,
-				    OPEN_EXISTING, 0, NULL)) {
-		GetFileInformationByHandle(handle, &fileInfo);
-		pInfo->links = fileInfo.nNumberOfLinks;
-		CloseHandle(handle);
-	    } else {
-		pInfo->links = 1;
-	    }	
-	}
-
-        FILETIME_TO_EPOCH(pInfo->modifyTime, findbuf.ftLastWriteTime);
-
-        if (findbuf.ftLastAccessTime.dwLowDateTime == 0 &&
-	    findbuf.ftLastAccessTime.dwHighDateTime == 0) {
-	    pInfo->accessTime = pInfo->modifyTime;
-	} else {
-	    FILETIME_TO_EPOCH(pInfo->accessTime, findbuf.ftLastAccessTime);
-	}
-
-        if (findbuf.ftCreationTime.dwLowDateTime == 0 &&
-	    findbuf.ftCreationTime.dwHighDateTime == 0) {
-	    pInfo->cTime = pInfo->modifyTime;
-	} else {
-	    FILETIME_TO_EPOCH(pInfo->cTime ,findbuf.ftCreationTime);
-	}
-        FindClose(findhandle);
-    }
-
-    pInfo->size_low = findbuf.nFileSizeLow;
-    pInfo->size_high = findbuf.nFileSizeHigh;
-	
-    if (info_for_link && (findbuf.dwFileAttributes &
-			  FILE_ATTRIBUTE_REPARSE_POINT))
-	pInfo->type = FT_SYMLINK;
-    else if (findbuf.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
-	pInfo->type = FT_DIRECTORY;
-    else
-	pInfo->type = FT_REGULAR;
-
-    if (findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
-	pInfo->access = FA_READ;
-    else
-	pInfo->access = FA_READ|FA_WRITE;
-
-    pInfo->mode = dos_to_posix_mode(findbuf.dwFileAttributes, name);
-    pInfo->major_device = drive;
-    pInfo->minor_device = 0;
-    pInfo->inode = 0;
-    pInfo->uid = 0;
-    pInfo->gid = 0;
-    
-    return 1;
-}
-
-int
-efile_write_info(Efile_error* errInfo,
-		 Efile_info* pInfo,
-		 char* name)
-{
-    Efile_call_state state;
-    int ret;
-    call_state_init(&state, errInfo);
-    ret = do_write_info(&state, pInfo, name);
-    call_state_free(&state);
-    return ret;
-}
-
-static int
-do_write_info(Efile_call_state* state,
-              Efile_info* pInfo,
-	      char* name)
-{
-    Efile_error* errInfo = state->errInfo;
-    SYSTEMTIME timebuf;
-    FILETIME ModifyFileTime;
-    FILETIME AccessFileTime;
-    FILETIME CreationFileTime;
-    HANDLE fd;
-    DWORD attr;
-    DWORD tempAttr;
-    WCHAR *wname = (WCHAR *) name;
-
-    DBG_TRACE(1, name);
-
-    ensure_wpath(state, &wname);
-
-    /*
-     * Get the attributes for the file.
-     */
-
-    tempAttr = attr = GetFileAttributesW(wname);
-    if (attr == 0xffffffff) {
-	return set_error(errInfo);
-    }
-    if (pInfo->mode != -1) {
-	if (pInfo->mode & _S_IWRITE) {
-	    /* clear read only bit */
-	    attr &= ~FILE_ATTRIBUTE_READONLY;
-	} else {
-	    /* set read only bit */
-	    attr |= FILE_ATTRIBUTE_READONLY;
-	}
-    }
-
-    /*
-     * Construct all file times.
-     */
-
-    EPOCH_TO_FILETIME(ModifyFileTime,   pInfo->modifyTime);
-    EPOCH_TO_FILETIME(AccessFileTime,   pInfo->accessTime);
-    EPOCH_TO_FILETIME(CreationFileTime, pInfo->cTime);
-
-    /*
-     * If necessary, set the file times.
-     */
-
-    /*
-     * If the has read only access, we must temporarily turn on
-     * write access (this is necessary for native filesystems,
-     * but not for NFS filesystems).
-     */
-
-    if (tempAttr & FILE_ATTRIBUTE_READONLY) {
-	tempAttr &= ~FILE_ATTRIBUTE_READONLY;
-	if (!SetFileAttributesW(wname, tempAttr)) {
-	    return set_error(errInfo);
-	}
-    }
-
-    fd = CreateFileW(wname, GENERIC_READ|GENERIC_WRITE,
-	    FILE_SHARE_FLAGS,
-	    NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
-    if (fd != INVALID_HANDLE_VALUE) {
-	BOOL result = SetFileTime(fd, &CreationFileTime, &AccessFileTime, &ModifyFileTime);
-	if (!result) {
-	    return set_error(errInfo);
-	}
-	CloseHandle(fd);
-    }
-
-    /*
-     * If the file doesn't have the correct attributes, set them now.
-     * (It could have been done before setting the file times, above).
-     */
-
-    if (tempAttr != attr) {
-	if (!SetFileAttributesW(wname, attr)) {
-	    return set_error(errInfo);
-	}
-    }
-    return 1;
-}
-
-
-int
-efile_pwrite(errInfo, fd, buf, count, offset)
-Efile_error* errInfo;		/* Where to return error codes. */
-int fd;				/* File descriptor to write to. */
-char* buf;			/* Buffer to write. */
-size_t count;			/* Number of bytes to write. */
-Sint64 offset;			/* where to write it */
-{
-    int res;
-    DBG_TRACE(2, L"");
-    res = efile_seek(errInfo, fd, offset, EFILE_SEEK_SET, NULL);
-    if (res) {
-	return efile_write(errInfo, EFILE_MODE_WRITE, fd, buf, count);
-    } else {
-	return res;
-    }
-}
-
-/* position and read/write as a single atomic op */
-int
-efile_pread(errInfo, fd, offset, buf, count, pBytesRead)
-Efile_error* errInfo;		/* Where to return error codes. */
-int fd;				/* File descriptor to read from. */
-Sint64 offset;			/* Offset in bytes from BOF. */
-char* buf;			/* Buffer to read into. */
-size_t count;			/* Number of bytes to read. */
-size_t* pBytesRead;		/* Where to return number of bytes read. */
-{
-    int res;
-    DBG_TRACE(2, L"");
-    res = efile_seek(errInfo, fd, offset, EFILE_SEEK_SET, NULL);
-    if (res) {
-	return efile_read(errInfo, EFILE_MODE_READ, fd, buf, count, pBytesRead);
-    } else {
-	return res;
-    }
-}
-
-
-
-int
-efile_write(errInfo, flags, fd, buf, count)
-Efile_error* errInfo;		/* Where to return error codes. */
-int flags;			/* Flags given when file was opened. */
-int fd;				/* File descriptor to write to. */
-char* buf;			/* Buffer to write. */
-size_t count;			/* Number of bytes to write. */
-{
-    DWORD written;		/* Bytes written in last operation. */
-    OVERLAPPED overlapped;
-    OVERLAPPED* pOverlapped = NULL;
-
-    DBG_TRACE(2, L"");
-    if (flags & EFILE_MODE_APPEND) {
-	memset(&overlapped, 0, sizeof(overlapped));
-	overlapped.Offset = 0xffffffff;
-	overlapped.OffsetHigh = 0xffffffff;
-	pOverlapped = &overlapped;
-    }
-    while (count > 0) {
-	if (!WriteFile((HANDLE) fd, buf, count, &written, pOverlapped))
-	    return set_error(errInfo);
-	buf += written;
-	count -= written;
-    }
-    return 1;
-}
-
-int
-efile_writev(Efile_error* errInfo,   /* Where to return error codes */
-	     int flags,              /* Flags given when file was
-				      * opened */
-	     int fd,                 /* File descriptor to write to */
-	     SysIOVec* iov,          /* Vector of buffer structs.
-				      * The structs are unchanged 
-				      * after the call */
-	     int iovcnt)             /* Number of structs in vector */
-{
-    int cnt;                         /* Buffers so far written */
-    OVERLAPPED overlapped;
-    OVERLAPPED* pOverlapped = NULL;
-
-    DBG_TRACE(2, L"");
-    ASSERT(iovcnt >= 0);
-    
-    if (flags & EFILE_MODE_APPEND) {
-	memset(&overlapped, 0, sizeof(overlapped));
-	overlapped.Offset = 0xffffffff;
-	overlapped.OffsetHigh = 0xffffffff;
-	pOverlapped = &overlapped;
-    }
-    for (cnt = 0; cnt < iovcnt; cnt++) {
-	if (iov[cnt].iov_base && iov[cnt].iov_len > 0) {
-	    /* Non-empty buffer */
-	    int p;                   /* Position in buffer */
-	    int w = iov[cnt].iov_len;/* Bytes written in this call */
-	    for (p = 0; p < iov[cnt].iov_len; p += w) {
-		if (!WriteFile((HANDLE) fd, 
-			       iov[cnt].iov_base + p, 
-			       iov[cnt].iov_len - p, 
-			       &w, 
-			       pOverlapped))
-		    return set_error(errInfo);
-	    }
-	}
-    }	
-    return 1;
-}
-
-int
-efile_read(errInfo, flags, fd, buf, count, pBytesRead)
-Efile_error* errInfo;		/* Where to return error codes. */
-int flags;			/* Flags given when file was opened. */
-int fd;				/* File descriptor to read from. */
-char* buf;			/* Buffer to read into. */
-size_t count;			/* Number of bytes to read. */
-size_t* pBytesRead;		/* Where to return number of bytes read. */
-{
-    DWORD nbytes = 0;
-
-    DBG_TRACE(2, L"");
-    if (!ReadFile((HANDLE) fd, buf, count, &nbytes, NULL))
-	return set_error(errInfo);
-
-    *pBytesRead = nbytes;
-    return 1;
-}
-
-int
-efile_seek(errInfo, fd, offset, origin, new_location)
-Efile_error* errInfo;		/* Where to return error codes. */
-int fd;				/* File descriptor to do the seek on. */
-Sint64 offset;			/* Offset in bytes from the given origin. */
-int origin;			/* Origin of seek (SEEK_SET, SEEK_CUR,
-				 * SEEK_END).
-				 */
-Sint64* new_location;		/* Resulting new location in file. */
-{
-    LARGE_INTEGER off, new_loc;
-    
-    DBG_TRACE(2, L"");
-    switch (origin) {
-    case EFILE_SEEK_SET: origin = FILE_BEGIN; break;
-    case EFILE_SEEK_CUR: origin = FILE_CURRENT; break;
-    case EFILE_SEEK_END: origin = FILE_END; break;
-    default:
-	errno = EINVAL;
-	check_error(-1, errInfo);
-	break;
-    }
-    
-    off.QuadPart = offset;
-    if (! SetFilePointerEx((HANDLE) fd, off,
-	new_location ? &new_loc : NULL, origin)) {
-	return set_error(errInfo);
-    }
-    if (new_location) {
-	*new_location = new_loc.QuadPart;
-	DEBUGF(("efile_seek(offset=%ld, origin=%d) -> %ld\n", 
-		(long) offset, origin, (long) *new_location));
-    } else {
-	DEBUGF(("efile_seek(offset=%ld, origin=%d)\n", (long) offset, origin));
-    }
-    return 1;
-}
-
-int
-efile_truncate_file(errInfo, fd, flags)
-Efile_error* errInfo;		/* Where to return error codes. */
-int *fd;				/* File descriptor for file to truncate. */
-int flags;
-{
-    DBG_TRACE(2, L"");
-    if (!SetEndOfFile((HANDLE) (*fd)))
-	return set_error(errInfo);
-    return 1;
-}
-
-
-/*
- * is_root_unc_name - returns TRUE if the argument is a UNC name specifying
- *      a root share.  That is, if it is of the form \\server\share\.
- *      This routine will also return true if the argument is of the
- *      form \\server\share (no trailing slash) but Win32 currently
- *      does not like that form.
- *
- *      Forward slashes ('/') may be used instead of backslashes ('\').
- */
-
-static int
-is_root_unc_name(const WCHAR *path)
-{
-    /*
-     * If a root UNC name, path will start with 2 (but not 3) slashes
-     */
-
-    if ((wcslen(path) >= 5) /* minimum string is "//x/y" */
-	&& ISSLASH(path[0]) && ISSLASH(path[1]))
-    {
-        const WCHAR *p = path + 2;
-
-        /*
-         * find the slash between the server name and share name
-         */
-        while ( * ++ p )
-            if ( ISSLASH(*p) )
-                break ;
-
-        if ( *p && p[1] )
-        {
-            /*
-             * is there a further slash?
-             */
-            while ( * ++ p )
-                if ( ISSLASH(*p) )
-                    break ;
-
-            /*
-             * just final slash (or no final slash)
-             */
-            if ( !*p || !p[1])
-                return 1;
-        }
-    }
-
-    return 0 ;
-}
-
-/*
- * Extracts the root part of an absolute filename (by modifying the string
- * pointed to by the name argument).  The name can start
- * with either a driver letter (for example, C:\), or a UNC name
- * (for example, \\guinness\bjorn).
- *
- * If the name is invalid, the buffer will be modified to point to
- * an empty string.
- *
- * Returns: 1 if the name consists of just the root part, 0 if
- * 	    the name was longer.
- */
-
-static int
-extract_root(WCHAR* name)
-{
-    int len = wcslen(name);
-
-    if (iswalpha(name[0]) && name[1] == L':' && ISSLASH(name[2])) {
-	WCHAR c = name[3];
-	name[3] = L'\0';
-	return c == L'\0';
-    } else if (len < 5 || !ISSLASH(name[0]) || !ISSLASH(name[1])) {
-	goto error;
-    } else {			/* Try to find the end of the UNC name. */
-	WCHAR* p;
-	WCHAR c;
-
-        /*
-         * Find the slash between the server name and share name.
-         */
-
-	for (p = name + 2; *p; p++)
-            if (ISSLASH(*p))
-                break;
-	if (*p == L'\0')
-	    goto error;
-
-	/*
-	 * Find the slash after the share name.
-	 */
-
-	for (p++; *p; p++)
-            if (ISSLASH(*p))
-                break;
-	c = *p;
-	*p = L'\0';
-	return c == L'\0' || p[1] == L'\0';
-    }
-
- error:
-    *name = L'\0';
-    return 1;
-}
-
-static unsigned short
-dos_to_posix_mode(int attr, const WCHAR *name)
-{
-    register unsigned short uxmode;
-    unsigned dosmode;
-    register const WCHAR *p;
-
-    dosmode = attr & 0xff;
-    if ((p = name)[1] == L':')
-	p += 2;
-
-    /* check to see if this is a directory - note we must make a special
-     * check for the root, which DOS thinks is not a directory
-     */
-
-    uxmode = (unsigned short)
-	(((ISSLASH(*p) && !p[1]) || (dosmode & FILE_ATTRIBUTE_DIRECTORY) ||
-	       *p == L'\0') ? _S_IFDIR|_S_IEXEC : _S_IFREG);
-
-    /* If attribute byte does not have read-only bit, it is read-write */
-
-    uxmode |= (dosmode & FILE_ATTRIBUTE_READONLY) ?
-	_S_IREAD : (_S_IREAD|_S_IWRITE);
-
-    /* see if file appears to be executable - check extension of name */
-
-    if (p = wcsrchr(name, L'.')) {
-        if (!_wcsicmp(p, L".exe") ||
-	    !_wcsicmp(p, L".cmd") ||
-	    !_wcsicmp(p, L".bat") ||
-	    !_wcsicmp(p, L".com"))
-            uxmode |= _S_IEXEC;
-    }
-
-    /* propagate user read/write/execute bits to group/other fields */
-
-    uxmode |= (uxmode & 0700) >> 3;
-    uxmode |= (uxmode & 0700) >> 6;
-
-    return uxmode;
-}
-
-
-int
-efile_readlink(Efile_error* errInfo, char* name, char* buffer, size_t size)
-{
-    Efile_call_state state;
-    int ret;
-    DBG_TRACE(1, name);
-    call_state_init(&state, errInfo);
-    ret = !!do_readlink(&state, name, buffer, size);
-    call_state_free(&state);
-    return ret;
-}
-
-/* If buffer==0, return buffer allocated by wpath_tmp_allocate
-*/
-static char*
-do_readlink(Efile_call_state* state, char* name, char* buffer, size_t size)
-{
-    /*
-     * load dll and see if we have CreateSymbolicLink at runtime:
-     * (Vista only)
-     */
-    HINSTANCE hModule = NULL;
-    WCHAR *wname = (WCHAR *) name;
-    WCHAR *wbuffer = (WCHAR *) buffer;
-    DWORD wsize = size / sizeof(WCHAR);
-    char* ret = NULL;
-
-    if ((hModule = LoadLibrary("kernel32.dll")) != NULL) {
-	typedef DWORD (WINAPI * GETFINALPATHNAMEBYHANDLEPTR)(
-							     HANDLE hFile,
-							     LPCWSTR lpFilePath,
-							     DWORD cchFilePath,
-							     DWORD dwFlags);
-
-	GETFINALPATHNAMEBYHANDLEPTR pGetFinalPathNameByHandle =
-	    (GETFINALPATHNAMEBYHANDLEPTR)GetProcAddress(hModule, "GetFinalPathNameByHandleW");
-
-	if (pGetFinalPathNameByHandle != NULL) {
-	    DWORD fileAttributes;
-	    ensure_wpath(state, &wname);
-	    /* first check if file is a symlink; {error, einval} otherwise */
-	    fileAttributes = GetFileAttributesW(wname);
-	    if ((fileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
-		DWORD success = 0;
-		HANDLE h = CreateFileW(wname, GENERIC_READ, FILE_SHARE_FLAGS, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
-		int len;
-		if(h != INVALID_HANDLE_VALUE) {
-		    if (!wbuffer) { /* dynamic allocation */
-			WCHAR dummy;
-			wsize = pGetFinalPathNameByHandle(h, &dummy, 0, 0);
-			if (wsize) {
-			    wbuffer = wpath_tmp_alloc(state, wsize);
-			}
-		    }
-		    if (wbuffer
-			&& (success = pGetFinalPathNameByHandle(h, wbuffer, wsize, 0))
-			&& success < wsize) {
-			WCHAR* wp;
-
-			/* GetFinalPathNameByHandle prepends path with "\\?\": */
-			len = wcslen(wbuffer);
-			wmemmove(wbuffer,wbuffer+4,len-3);
-			if (len - 4 >= 2 && wbuffer[1] == L':' && wbuffer[0] >= L'A' &&
-			    wbuffer[0] <= L'Z') {
-			    wbuffer[0] = wbuffer[0] + L'a' - L'A';
-			}
-			
-			for (wp=wbuffer ; *wp; wp++)
-			    if (*wp == L'\\')
-				*wp = L'/';
-		    }
-		    CloseHandle(h);
-		}
-		if (success) {
-		    ret = (char*) wbuffer;
-		} else {
-		    set_error(state->errInfo);
-		}
-	    } else {
-		errno = EINVAL;
-		save_last_error(state->errInfo);
-	    }
-	    goto done;
-	}
-    }
-    errno = ENOTSUP;
-    save_last_error(state->errInfo);
-
-done:
-    if (hModule)
-	FreeLibrary(hModule);
-    return ret;
-}
-
-
-int
-efile_altname(Efile_error* errInfo, char* orig_name, char* buffer, size_t size)
-{
-    Efile_call_state state;
-    int ret;
-    DBG_TRACE(1, orig_name);
-    call_state_init(&state, errInfo);
-    ret = do_altname(&state, orig_name, buffer, size);
-    call_state_free(&state);
-    return ret;
-}
-
-static int
-do_altname(Efile_call_state* state, char* orig_name, char* buffer, size_t size)
-{
-    WIN32_FIND_DATAW wfd;
-    HANDLE fh;
-    WCHAR* name;
-    int name_len;
-    WCHAR* full_path = NULL;
-    WCHAR *worig_name = (WCHAR *) orig_name;
-    WCHAR *wbuffer = (WCHAR *) buffer;
-    int drive;			/* Drive for filename (1 = A:, 2 = B: etc). */
-
-    /* Don't allow wildcards to be interpreted by system */
-
-    if (wcspbrk(worig_name, L"?*")) {
-    enoent:
-	state->errInfo->posix_errno = ENOENT;
-	state->errInfo->os_errno = ERROR_FILE_NOT_FOUND;
-        return 0;
-    }
-
-    /*
-     * Move the name to a buffer and make sure to remove a trailing
-     * slash, because it causes FindFirstFile() to fail on Win95.
-     */
-    ensure_wpath(state, &worig_name);
-    name_len = wcslen(worig_name);
-
-    name = wpath_tmp_alloc(state, name_len + 1);
-    wcscpy(name, worig_name);
-    if (name_len > 2 && ISSLASH(name[name_len-1]) &&
-	name[name_len-2] != L':') {
-	name[name_len-1] = L'\0';
-    }
-    
-    /* Try to get disk from name.  If none, get current disk.  */
-
-    if (name[1] != L':') {
-	WCHAR* cwd_path = get_cwd_wpath_tmp(state);
-        drive = 0;
-        if (cwd_path[1] == L':') {
-	    drive = towlower(cwd_path[0]) - L'a' + 1;
-	}
-    } else if (*name && name[2] == L'\0') {
-	/*
-	 * X: and nothing more is an error.
-	 */
-	goto enoent;
-    } else {
-        drive = towlower(*name) - L'a' + 1;
-    }
-    fh = FindFirstFileW(name,&wfd);
-    if (fh == INVALID_HANDLE_VALUE) {
-	DWORD fff_error = GetLastError();
-        if (!(wcspbrk(name, L"./\\") &&
-	      (full_path = get_full_wpath_tmp(state, name, NULL, 0)) &&
-	      /* root dir. ('C:\') or UNC root dir. ('\\server\share\') */
-	      ((wcslen(full_path) == 3) || is_root_unc_name(full_path)) &&
-	      (GetDriveTypeW(full_path) > 1)   ) ) {
-
-	    set_os_errno(state->errInfo, fff_error);
-	    return 0;
-	}
-        /*
-         * Root directories (such as C:\ or \\server\share\ are fabricated.
-         */
-	wcscpy(wbuffer,name);
-	return 1;
-    }
-	
-    wcscpy(wbuffer,wfd.cAlternateFileName);
-    if (!*wbuffer) {
-	wcscpy(wbuffer,wfd.cFileName);
-    }
-    FindClose(fh);
-    return 1;
-}
-
-
-int
-efile_link(Efile_error* errInfo, char* old, char* new)
-{
-    Efile_call_state state;
-    WCHAR *wold = (WCHAR *) old;
-    WCHAR *wnew = (WCHAR *) new;
-    int ret;
-    DBG_TRACE(1, old);
-    call_state_init(&state, errInfo);
-    ensure_wpath(&state, &wold);
-    ensure_wpath(&state, &wnew);
-    if(!CreateHardLinkW(wnew, wold, NULL)) {
-	ret = set_error(errInfo);
-    }
-    else ret =1;
-    call_state_free(&state);
-    return ret;
-}
-
-int
-efile_symlink(Efile_error* errInfo, char* old, char* new)
-{
-    Efile_call_state state;
-    int ret;
-    DBG_TRACE2(1, "symlink(%s <- %s)", old, new);
-    call_state_init(&state, errInfo);
-    ret = do_symlink(&state, old, new);
-    call_state_free(&state);
-    return ret;
-}
-
-static int
-do_symlink(Efile_call_state* state, char* old, char* new)
-{
-    /*
-     * Load dll and see if we have CreateSymbolicLink at runtime:
-     * (Vista only)
-     */
-    HINSTANCE hModule = NULL;
-    WCHAR *wold = (WCHAR *) old;
-    WCHAR *wnew = (WCHAR *) new;
-
-    DBG_TRACE(1, old);
-    if ((hModule = LoadLibrary("kernel32.dll")) != NULL) {
-	typedef BOOLEAN (WINAPI  * CREATESYMBOLICLINKFUNCPTR) (
-	     LPCWSTR lpSymlinkFileName,
-	     LPCWSTR lpTargetFileName,
-	     DWORD dwFlags);
-
-	CREATESYMBOLICLINKFUNCPTR pCreateSymbolicLink =
-	    (CREATESYMBOLICLINKFUNCPTR) GetProcAddress(hModule,
-						       "CreateSymbolicLinkW");
-	/* A for MBCS, W for UNICODE... char* above implies 'W'! */
-	if (pCreateSymbolicLink != NULL) {
-	  ensure_wpath(state, &wold);
-	  ensure_wpath(state, &wnew);
-	  {
-	    DWORD attr = GetFileAttributesW(wold);
-	    int flag = (attr != INVALID_FILE_ATTRIBUTES &&
-			attr & FILE_ATTRIBUTE_DIRECTORY) ? 1 : 0;
-	    /*  SYMBOLIC_LINK_FLAG_DIRECTORY = 1 */
-	    BOOLEAN success = pCreateSymbolicLink(wnew, wold, flag);
-	    FreeLibrary(hModule);
-
-	    if (success) {
-		return 1;
-	    } else {
-		return set_error(state->errInfo);
-	    }
-	  }
-	} else
-	    FreeLibrary(hModule);
-    }
-    errno = ENOTSUP;
-    return check_error(-1, state->errInfo);
-}
-
-int
-efile_fadvise(Efile_error* errInfo, int fd, Sint64 offset,
-	    Sint64 length, int advise)
-{
-    DBG_TRACE(2, L"");
-    /* posix_fadvise is not available on Windows, do nothing */
-    errno = ERROR_SUCCESS;
-    return check_error(0, errInfo);
-}
-
-int
-efile_fallocate(Efile_error* errInfo, int fd, Sint64 offset, Sint64 length)
-{
-    DBG_TRACE(2, L"");
-    /* No file preallocation method available in Windows. */
-    errno = errno_map(ERROR_NOT_SUPPORTED);
-    SetLastError(ERROR_NOT_SUPPORTED);
-
-    return check_error(-1, errInfo);
-}
diff --git a/erts/emulator/hipe/hipe_amd64_bifs.m4 b/erts/emulator/hipe/hipe_amd64_bifs.m4
index b3c9a460bb..cf4c59c9af 100644
--- a/erts/emulator/hipe/hipe_amd64_bifs.m4
+++ b/erts/emulator/hipe/hipe_amd64_bifs.m4
@@ -462,6 +462,7 @@ ASYM($1):
 	TYPE_FUNCTION(ASYM($1))
 #endif')
 
+
 /*
  * noproc_primop_interface_0(nbif_name, cbif_name)
  * noproc_primop_interface_1(nbif_name, cbif_name)
diff --git a/erts/emulator/hipe/hipe_bif0.tab b/erts/emulator/hipe/hipe_bif0.tab
index 4038ca7ef8..0380e8c795 100644
--- a/erts/emulator/hipe/hipe_bif0.tab
+++ b/erts/emulator/hipe/hipe_bif0.tab
@@ -135,8 +135,8 @@ atom bs_utf16_size
 atom bs_put_utf16be
 atom bs_put_utf16le
 atom bs_get_utf16
-atom bs_validate_unicode
 atom bs_validate_unicode_retract
 atom emulate_fpe
 atom emasculate_binary
 atom is_divisible
+atom is_unicode
\ No newline at end of file
diff --git a/erts/emulator/hipe/hipe_bif2.c b/erts/emulator/hipe/hipe_bif2.c
index 9ebbb22846..df377b2153 100644
--- a/erts/emulator/hipe/hipe_bif2.c
+++ b/erts/emulator/hipe/hipe_bif2.c
@@ -190,3 +190,8 @@ BIF_RETTYPE hipe_bifs_llvm_fix_pinned_regs_0(BIF_ALIST_0)
 {
     BIF_RET(am_ok);
 }
+
+BIF_RETTYPE hipe_bifs_build_stacktrace_1(BIF_ALIST_1)
+{
+    BIF_RET(build_stacktrace(BIF_P, BIF_ARG_1));
+}
diff --git a/erts/emulator/hipe/hipe_bif2.tab b/erts/emulator/hipe/hipe_bif2.tab
index bbcb577be0..c4da44606a 100644
--- a/erts/emulator/hipe/hipe_bif2.tab
+++ b/erts/emulator/hipe/hipe_bif2.tab
@@ -32,3 +32,4 @@ bif hipe_bifs:modeswitch_debug_on/0
 bif hipe_bifs:modeswitch_debug_off/0
 bif hipe_bifs:debug_native_called/2
 bif hipe_bifs:llvm_fix_pinned_regs/0
+bif hipe_bifs:build_stacktrace/1
diff --git a/erts/emulator/hipe/hipe_bif_list.m4 b/erts/emulator/hipe/hipe_bif_list.m4
index bebe20a18e..4f0a655508 100644
--- a/erts/emulator/hipe/hipe_bif_list.m4
+++ b/erts/emulator/hipe/hipe_bif_list.m4
@@ -186,6 +186,7 @@ gc_bif_interface_1(nbif_erase_1, erase_1)
 gc_bif_interface_1(nbif_erts_internal_garbage_collect_1, erts_internal_garbage_collect_1)
 gc_nofail_primop_interface_1(nbif_gc_1, hipe_gc)
 gc_bif_interface_2(nbif_put_2, put_2)
+gc_bif_interface_2(nbif_hipe_bifs_build_stacktrace, hipe_bifs_build_stacktrace_1)
 
 /*
  * Debug BIFs that need read access to the full state.
@@ -222,7 +223,8 @@ standard_bif_interface_2(nbif_rethrow, hipe_rethrow)
 standard_bif_interface_3(nbif_find_na_or_make_stub, hipe_find_na_or_make_stub)
 standard_bif_interface_2(nbif_nonclosure_address, hipe_nonclosure_address)
 nocons_nofail_primop_interface_0(nbif_fclearerror_error, hipe_fclearerror_error)
-standard_bif_interface_2(nbif_is_divisible, hipe_is_divisible)
+noproc_primop_interface_2(nbif_is_divisible, hipe_is_divisible)
+noproc_primop_interface_1(nbif_is_unicode, hipe_is_unicode)
 
 /*
  * Mbox primops with implicit P parameter.
@@ -247,7 +249,6 @@ nofail_primop_interface_3(nbif_bs_get_float_2, erts_bs_get_float_2)
 standard_bif_interface_3(nbif_bs_put_utf8, hipe_bs_put_utf8)
 standard_bif_interface_3(nbif_bs_put_utf16be, hipe_bs_put_utf16be)
 standard_bif_interface_3(nbif_bs_put_utf16le, hipe_bs_put_utf16le)
-standard_bif_interface_1(nbif_bs_validate_unicode, hipe_bs_validate_unicode)
 
 /*
  * Bit-syntax primops without any P parameter.
diff --git a/erts/emulator/hipe/hipe_debug.c b/erts/emulator/hipe/hipe_debug.c
index 222a11db3d..929b2a9432 100644
--- a/erts/emulator/hipe/hipe_debug.c
+++ b/erts/emulator/hipe/hipe_debug.c
@@ -63,12 +63,13 @@ static void print_beam_pc(BeamInstr *pc)
 	printf("normal-process-exit");
     } else {
 	ErtsCodeMFA *cmfa = find_function_from_pc(pc);
-	if (cmfa)
+	if (cmfa) {
+	    fflush(stdout);
 	    erts_printf("%T:%T/%bpu + 0x%bpx",
 			cmfa->module, cmfa->function,
                         cmfa->arity,
                         pc - erts_codemfa_to_code(cmfa));
-	else
+	} else
 	    printf("?");
     }
 }
@@ -116,6 +117,7 @@ static void print_stack(Eterm *sp, Eterm *end)
 	    printf(" | 0x%0*lx | 0x%0*lx | ",
 		   2*(int)sizeof(long), (unsigned long)sp,
 		   2*(int)sizeof(long), (unsigned long)val);
+	    fflush(stdout);
 	    erts_printf("%.30T", val);
 	    printf("\r\n");
 	}
@@ -126,7 +128,9 @@ static void print_stack(Eterm *sp, Eterm *end)
 
 void hipe_print_estack(Process *p)
 {
-    printf(" |       BEAM  STACK       |\r\n");
+    printf(" | %*s BEAM   STACK %*s |\r\n",
+	   2*(int)sizeof(long)-3, "",
+	   2*(int)sizeof(long)-4, "");
     print_stack(p->stop, STACK_START(p));
 }
 
@@ -135,7 +139,9 @@ static void print_heap(Eterm *pos, Eterm *end)
     printf("From: 0x%0*lx to 0x%0*lx\n\r",
 	   2*(int)sizeof(long), (unsigned long)pos,
 	   2*(int)sizeof(long), (unsigned long)end);
-    printf(" |         H E A P         |\r\n");
+    printf(" | %*s H E A P %*s |\r\n",
+	   2*(int)sizeof(long)-1, "",
+	   2*(int)sizeof(long)-1, "");
     printf(" | %*s | %*s |\r\n",
 	   2+2*(int)sizeof(long), "Address",
 	   2+2*(int)sizeof(long), "Contents");
@@ -158,8 +164,10 @@ static void print_heap(Eterm *pos, Eterm *end)
 		++pos;
 		--ari;
 	    }
-	} else
+	} else {
+	    fflush(stdout);
 	    erts_printf("%.30T", val);
+	}
 	printf("\r\n");
     }
     printf(" |%s|%s|\r\n", dashes, dashes);
@@ -173,11 +181,15 @@ void hipe_print_heap(Process *p)
 void hipe_print_pcb(Process *p)
 {
     printf("P: 0x%0*lx\r\n", 2*(int)sizeof(long), (unsigned long)p);
-    printf("-----------------------------------------------\r\n");
-    printf("Offset| Name        | Value      | *Value     |\r\n");
+    printf("%.*s\r\n",
+           6+1+13+1+2*(int)sizeof(long)+4+1+2*(int)sizeof(long)+4+1,
+           "---------------------------------------------------------------");
+    printf("Offset| Name        | Value %*s | *Value %*s |\r\n",
+           2*(int)sizeof(long)-4, "",
+           2*(int)sizeof(long)-5, "");
 #undef U
 #define U(n,x) \
-    printf(" % 4d | %s | 0x%0*lx |            |\r\n", (int)offsetof(Process,x), n, 2*(int)sizeof(long), (unsigned long)p->x)
+    printf(" % 4d | %s | 0x%0*lx | %*s |\r\n", (int)offsetof(Process,x), n, 2*(int)sizeof(long), (unsigned long)p->x, 2*(int)sizeof(long)+2, "")
 #undef P
 #define P(n,x) \
     printf(" % 4d | %s | 0x%0*lx | 0x%0*lx |\r\n", (int)offsetof(Process,x), n, 2*(int)sizeof(long), (unsigned long)p->x, 2*(int)sizeof(long), p->x ? (unsigned long)*(p->x) : -1UL)
@@ -241,5 +253,7 @@ void hipe_print_pcb(Process *p)
 #endif	/* HIPE */
 #undef U
 #undef P
-    printf("-----------------------------------------------\r\n");
+    printf("%.*s\r\n",
+           6+1+14+1+2*(int)sizeof(long)+4+1+2*(int)sizeof(long)+4+1,
+           "---------------------------------------------------------------");
 }
diff --git a/erts/emulator/hipe/hipe_mkliterals.c b/erts/emulator/hipe/hipe_mkliterals.c
index 6ea120c65c..84889b3376 100644
--- a/erts/emulator/hipe/hipe_mkliterals.c
+++ b/erts/emulator/hipe/hipe_mkliterals.c
@@ -462,6 +462,15 @@ static const struct rts_param rts_params[] = {
       0
 #endif
     },
+    /* This flag is always defined, but its value is configuration-dependent. */
+    { 17, "ERTS_USE_LITERAL_TAG",
+      1,
+#if defined(TAG_LITERAL_PTR)
+      1
+#else
+      0
+#endif
+    },
     /* This parameter is always defined, but its value depends on ERTS_SMP. */
     { 19, "MSG_MESSAGE",
       1, offsetof(struct erl_mesg, m[0])
@@ -522,6 +531,9 @@ static const struct rts_param rts_params[] = {
       1, offsetof(struct process, hipe.gc_is_unsafe)
 #endif
     },
+
+    { 54, "P_MSG_LAST", 1, offsetof(struct process, msg.last) },
+    { 55, "P_MSG_SAVED_LAST", 1, offsetof(struct process, msg.saved_last) },
 };
 
 #define NR_PARAMS	ARRAY_SIZE(rts_params)
diff --git a/erts/emulator/hipe/hipe_native_bif.c b/erts/emulator/hipe/hipe_native_bif.c
index 23f64a6991..d6358eabf4 100644
--- a/erts/emulator/hipe/hipe_native_bif.c
+++ b/erts/emulator/hipe/hipe_native_bif.c
@@ -254,6 +254,8 @@ void hipe_handle_exception(Process *c_p)
     /* Synthesized to avoid having to generate code for it. */
     c_p->def_arg_reg[0] = exception_tag[GET_EXC_CLASS(c_p->freason)];
 
+    c_p->msg.saved_last = 0;  /* No longer safe to use this position */
+
     hipe_find_handler(c_p);
 }
 
@@ -482,15 +484,12 @@ static int validate_unicode(Eterm arg)
     return 1;
 }
 
-BIF_RETTYPE nbif_impl_hipe_bs_validate_unicode(NBIF_ALIST_1)
+Uint hipe_is_unicode(Eterm arg)
 {
-    Process *p = BIF_P;
-    Eterm arg = BIF_ARG_1;
-    if (!validate_unicode(arg))
-	BIF_ERROR(p, BADARG);
-    return NIL;
+    return (Uint) validate_unicode(arg);
 }
 
+
 int hipe_bs_validate_unicode_retract(ErlBinMatchBuffer* mb, Eterm arg)
 {
     if (!validate_unicode(arg)) {
@@ -500,16 +499,12 @@ int hipe_bs_validate_unicode_retract(ErlBinMatchBuffer* mb, Eterm arg)
     return 1;
 }
 
-/* Called via standard_bif_interface_2 */
-BIF_RETTYPE nbif_impl_hipe_is_divisible(NBIF_ALIST_2)
+Uint hipe_is_divisible(Uint dividend, Uint divisor)
 {
-    /* Arguments are Eterm-sized unsigned integers */
-    Uint dividend = BIF_ARG_1;
-    Uint divisor = BIF_ARG_2;
     if (dividend % divisor) {
-	BIF_ERROR(BIF_P, BADARG);
+        return 0;
     } else {
-	return NIL;
+        return 1;
     }
 }
 
diff --git a/erts/emulator/hipe/hipe_native_bif.h b/erts/emulator/hipe/hipe_native_bif.h
index cbc7ab8dc6..6dffec1d8d 100644
--- a/erts/emulator/hipe/hipe_native_bif.h
+++ b/erts/emulator/hipe/hipe_native_bif.h
@@ -66,9 +66,9 @@ AEXTERN(Eterm,nbif_bs_utf16_size,(Eterm));
 AEXTERN(Eterm,nbif_bs_put_utf16be,(Process*,Eterm,byte*,unsigned int));
 AEXTERN(Eterm,nbif_bs_put_utf16le,(Process*,Eterm,byte*,unsigned int));
 AEXTERN(Eterm,nbif_bs_get_utf16,(void));
-AEXTERN(Eterm,nbif_bs_validate_unicode,(Process*,Eterm));
+AEXTERN(Uint,nbif_is_unicode,(Eterm));
 AEXTERN(Eterm,nbif_bs_validate_unicode_retract,(void));
-AEXTERN(void,nbif_is_divisible,(Process*,Uint,Uint));
+AEXTERN(Uint,nbif_is_divisible,(Uint,Uint));
 
 AEXTERN(void,nbif_select_msg,(Process*));
 AEXTERN(Eterm,nbif_cmp_2,(void));
@@ -91,10 +91,10 @@ BIF_RETTYPE nbif_impl_hipe_bs_put_utf8(NBIF_ALIST_3);
 Eterm hipe_bs_utf16_size(Eterm);
 BIF_RETTYPE nbif_impl_hipe_bs_put_utf16be(NBIF_ALIST_3);
 BIF_RETTYPE nbif_impl_hipe_bs_put_utf16le(NBIF_ALIST_3);
-BIF_RETTYPE nbif_impl_hipe_bs_validate_unicode(NBIF_ALIST_1);
+Uint hipe_is_unicode(Eterm);
 struct erl_bin_match_buffer;
 int hipe_bs_validate_unicode_retract(struct erl_bin_match_buffer*, Eterm);
-BIF_RETTYPE nbif_impl_hipe_is_divisible(NBIF_ALIST_2);
+Uint hipe_is_divisible(Uint, Uint);
 
 #ifdef NO_FPE_SIGNALS
 AEXTERN(void,nbif_emulate_fpe,(Process*));
@@ -104,6 +104,9 @@ void hipe_emulate_fpe(Process*);
 AEXTERN(void,nbif_emasculate_binary,(Eterm));
 void hipe_emasculate_binary(Eterm);
 
+AEXTERN(BIF_RETTYPE,nbif_hipe_bifs_build_stacktrace,(Process*,Eterm));
+BIF_RETTYPE hipe_bifs_build_stacktrace_1(BIF_ALIST_1);
+
 /*
  * Stuff that is different in SMP and non-SMP.
  */
diff --git a/erts/emulator/hipe/hipe_primops.h b/erts/emulator/hipe/hipe_primops.h
index 6aac5e6205..d6fd10bdff 100644
--- a/erts/emulator/hipe/hipe_primops.h
+++ b/erts/emulator/hipe/hipe_primops.h
@@ -63,7 +63,7 @@ PRIMOP_LIST(am_bs_utf16_size, &nbif_bs_utf16_size)
 PRIMOP_LIST(am_bs_put_utf16be, &nbif_bs_put_utf16be)
 PRIMOP_LIST(am_bs_put_utf16le, &nbif_bs_put_utf16le)
 PRIMOP_LIST(am_bs_get_utf16, &nbif_bs_get_utf16)
-PRIMOP_LIST(am_bs_validate_unicode, &nbif_bs_validate_unicode)
+PRIMOP_LIST(am_is_unicode, &nbif_is_unicode)
 PRIMOP_LIST(am_bs_validate_unicode_retract, &nbif_bs_validate_unicode_retract)
 
 PRIMOP_LIST(am_is_divisible, &nbif_is_divisible)
@@ -83,6 +83,7 @@ PRIMOP_LIST(am_emulate_fpe, &nbif_emulate_fpe)
 #endif
 PRIMOP_LIST(am_emasculate_binary, &nbif_emasculate_binary)
 PRIMOP_LIST(am_debug_native_called, &nbif_hipe_bifs_debug_native_called)
+PRIMOP_LIST(am_build_stacktrace, &nbif_hipe_bifs_build_stacktrace)
 
 #if defined(__sparc__)
 #include "hipe_sparc_primops.h"
diff --git a/erts/emulator/hipe/hipe_risc_stack.c b/erts/emulator/hipe/hipe_risc_stack.c
index 4001bedeb6..bb93a918a2 100644
--- a/erts/emulator/hipe/hipe_risc_stack.c
+++ b/erts/emulator/hipe/hipe_risc_stack.c
@@ -47,8 +47,10 @@ static void print_slot(Eterm *sp, unsigned int live)
     printf(" | 0x%0*lx | 0x%0*lx | ",
 	   2*(int)sizeof(long), (unsigned long)sp,
 	   2*(int)sizeof(long), val);
-    if (live)
+    if (live) {
+	fflush(stdout);
 	erts_printf("%.30T", val);
+    }
     printf("\r\n");
 }
 
@@ -68,7 +70,9 @@ void hipe_print_nstack(Process *p)
 	[0 ... 2*sizeof(long)+3] = '-'
     };
 
-    printf(" |      NATIVE  STACK      |\r\n");
+    printf(" | %*s NATIVE   STACK %*s |\r\n",
+	   2*(int)sizeof(long)-5, "",
+	   2*(int)sizeof(long)-4, "");
     printf(" |%s|%s|\r\n", dashes, dashes);
     printf(" | %*s | 0x%0*lx |\r\n",
 	   2+2*(int)sizeof(long), "heap",
diff --git a/erts/emulator/hipe/hipe_x86_stack.c b/erts/emulator/hipe/hipe_x86_stack.c
index 31582b3a2e..615e07917a 100644
--- a/erts/emulator/hipe/hipe_x86_stack.c
+++ b/erts/emulator/hipe/hipe_x86_stack.c
@@ -43,8 +43,10 @@ static void print_slot(Eterm *sp, unsigned int live)
     printf(" | 0x%0*lx | 0x%0*lx | ",
 	   2*(int)sizeof(long), (unsigned long)sp,
 	   2*(int)sizeof(long), val);
-    if (live)
+    if (live) {
+	fflush(stdout);
 	erts_printf("%.30T", val);
+    }
     printf("\r\n");
 }
 
@@ -74,7 +76,9 @@ void hipe_print_nstack(Process *p)
     sdesc0.livebits[0] = ~1;
     sdesc = &sdesc0;
 
-    printf(" |      NATIVE  STACK      |\r\n");
+    printf(" | %*s NATIVE   STACK %*s |\r\n",
+	   2*(int)sizeof(long)-5, "",
+	   2*(int)sizeof(long)-4, "");
     printf(" |%s|%s|\r\n", dashes, dashes);
     printf(" | %*s | 0x%0*lx |\r\n",
 	   2+2*(int)sizeof(long), "heap",
diff --git a/erts/emulator/internal_doc/GarbageCollection.md b/erts/emulator/internal_doc/GarbageCollection.md
new file mode 100644
index 0000000000..1d9e3f4160
--- /dev/null
+++ b/erts/emulator/internal_doc/GarbageCollection.md
@@ -0,0 +1,187 @@
+# Erlang Garbage Collector
+
+Erlang manages dynamic memory with a [tracing garbage collector](https://en.wikipedia.org/wiki/Tracing_garbage_collection). More precisely a per process generational semi-space copying collector using [Cheney's](#cheney) copy collection algorithm together with a global large object space.
+
+## Overview
+
+Each Erlang process has its own stack and heap which are allocated in the same memory block and grow towards each other. When the stack and the heap [meet](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/beam_emu.c#L387), the garbage collector is triggered and memory is reclaimed. If not enough memory was reclaimed, the heap will grow.
+
+### Creating Data
+
+Terms are created on the heap by evaluating expressions. There are two major types of terms: [immediate terms](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_term.h#L88-L97) which require no heap space (small integers, atoms, pids, port ids etc) and cons or [boxed terms](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_term.h#L106-L120) (tuple, big num, binaries etc) that do require heap space. Immediate terms do not need any heap space because they are embedded into the containing structure.
+
+Let's look at an example that returns a tuple with the newly created data.
+
+```erlang
+data(Foo) ->
+   Cons = [42|Foo],
+   Literal = {text, "hello world!"},
+   {tag, Cons, Literal}.
+```
+
+In this example we first create a new cons cell with an integer and a tuple with some text. Then a tuple of size three wrapping the other values with an atom tag is created and returned.
+
+On the heap tuples require a word size for each of its elements as well as for the header. Cons cells always require two words. Adding these things together, we get seven words for the tuples and 26 words for the cons cells. The string `"hello world!"` is a list of cons cells and thus requires 24 words. The atom `tag` and the integer `42` do not require any additional heap memory since it is an *immediate*. Adding all the terms together, the heap space required in this example should be 33 words.
+
+Compiling this code to beam assembly (`erlc -S`) shows exactly what is happening.
+
+```erlang
+    ...
+    {test_heap,6,1}.
+    {put_list,{integer,42},{x,0},{x,1}}.
+    {put_tuple,3,{x,0}}.
+    {put,{atom,tag}}.
+    {put,{x,1}}.
+    {put,{literal,{text,"hello world!"}}}.
+    return.
+```
+
+Looking at the assembler code we can see three things; The heap requirement in this function turns out to be only six words, as seen by the `{test_heap,6,1}` instruction. All the allocations are combined to a single instruction. The bulk of the data `{text, "hello world!"}` is a *literal*. Literals, sometimes referred to as constants, are not allocated in the function since they are a part of the module and allocated at load time.
+
+If there is not enough space available on the heap to satisfy the `test_heap` instructions request for memory, then a garbage collection is initiated. It may happen immediately in the `test_heap` instruction, or it can be delayed until a later time depending on what state the process is in. If the garbage collection is delayed, any memory needed will be allocated in heap fragments. Heap fragments are extra memory blocks that are a part of the young heap, but are not allocated in the contigious area where terms normally reside. See [The young heap](#the-young-heap) for more details.
+
+### The collector
+
+Erlang has a copying semi-space garbage collector. This means that when doing a garbage collection, the terms are copied from one distinct area, called the *from space*, to a new clean area, called the *to space*. The collector starts by [scanning the root-set](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1980) (stack, registers, etc).
+
+![Garbage collection: initial values](figures/gc-start.png)
+
+It follows all the pointers from the root-set to the heap and copies each term word by word to the *to space*.
+
+After the header word has been copied a [*move marker*](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.h#L45-L46) is destructively placed in it pointing to the term in the *to space*. Any other term that points to the already moved term will [see this move marker](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1125) and copy the referring pointer instead. For example, if the have the following Erlang code:
+
+```erlang
+foo(Arg) ->
+    T = {test, Arg},
+    {wrapper, T, T, T}.
+```
+
+Only one copy of T exists on the heap and during the garbage collection only the first time T is encountered will it be copied.
+
+![Garbage collection: root set scan](figures/gc-rootset-scan.png)
+
+After [all terms](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1089) referenced by the root-set have been copied, the collector scans the *to space* and copies all terms that these terms reference. When scanning, the collector steps through each term on the *to space* and any term still referencing the *from space* is copied over to the *to space*. Some terms contain non-term data (the payload of a on heap binary for instance). When encountered by the collector, these values are simply skipped.
+
+![Garbage collection: heap scan](figures/gc-heap-scan1.png)
+
+Every term object we can reach is copied to the *to space* and stored on top off the *scan stop* line, and then the scan stop is moved to the end of the last object.
+
+![Garbage collection: heap scan](figures/gc-heap-stop.png)
+
+When *scan stop* marker [catches up](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1103) to the *scan start* marker, the garbage collection is done. At this point we can [deallocate](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1206) the entire *from space* and therefore reclaim the entire young heap.
+
+## Generational Garbage Collection
+
+In addition to the collection algorithm described above, the Erlang garbage collector also provides generational garbage collection. An additional heap, called the old heap, is used where the long lived data is stored. The original heap is called the young heap, or sometimes the allocation heap.
+
+With this in mind we can look at the Erlang's garbage collection again. During the copy stage anything that should be copied to the young *to space* is instead copied to the old *to space* *if* it is [below the *high-watermark*](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1127).
+
+![Garbage collection: heap scan](figures/gc-watermark.png)
+
+The [*high-watermark*](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_process.h#L1021) is placed where the previous garbage collection (described in [Overview](#overview)) ended and we have introduced a new area called the old heap. When doing the normal garbage collection pass, any term that is located below the high-watermark is copied to the old *to space* instead of the young.
+
+![Garbage collection: heap scan](figures/gc-watermark-2.png)
+
+In the next garbage collection, any pointers to the old heap will be ignored and not scanned. This way the garbage collector does not have to scan the long-lived terms.
+
+Generational garbage collection aims to increase performance at the expense of memory. This is achieved because only the young, smaller, heap is considered in most garbage collections.
+
+The generational [hypothesis](#ungar) predicts that most terms tend to die young, and for an immutable language such as Erlang, young terms die even faster than in other languages. So for most usage patterns the data in the new heap will die very soon after it is allocated. This is good because it limits the amount of data copied to the old heap and also because the garbage collection algorithm used is proportional to the amount of live data on the heap.
+
+One critical issue to note here is that any term on the young heap can reference terms on the old heap but *no* term on the old heap may refer to a term on the young heap. This is due to the nature of the copy algorithm. Anything referenced by an old heap term is not included in the reference tree, root-set and its followers, and hence is not copied. If it was, the data would be lost, fire and brimstone would rise to cover the earth. Fortunately, this comes naturally for Erlang because the terms are immutable and thus there can be no pointers modified on the old heap to point to the young heap.
+
+To reclaim data from the old heap, both young and old heaps are included during the collection and copied to a common *to space*. Both the *from space* of the young and old heap are then deallocated and the procedure will start over from the beginning. This type of garbage collection is called a full sweep and is triggered when the size of the area under the high-watermark is larger than the size of the free area of the old heap. It can also be triggered by doing a manual call to [erlang:garbage_collect()](http://erlang.org/doc/man/erlang.html#garbage_collect-0), or by running into the young garbage collection limit set by [spawn_opt(fun(),[{fullsweep_after, N}])](http://erlang.org/doc/man/erlang.html#spawn_opt-4) where N is the number of young garbage collections to do before forcing a garbage collection of both young and old heap.
+
+## The young heap
+
+The young heap, or the allocation heap, consists of the stack and heap as described in the Overview. However, it also includes any heap fragments that are attached to the heap. All of the heap fragments are considered to be above the high-watermark and part of the young generation. Heap fragments contain terms that either did not fit on the heap, or were created by another process and then attached to the heap. For instance if the bif binary_to_term created a term which does not fit on the current heap without doing a garbage collection, it will create a heap-fragment for the term and then schedule a garbage collection for later. Also if a message is sent to the process, the payload may be placed in a heap-fragment and that fragment is added to young heap when the message is matched in a receive clause.
+
+This procedure differs from how it worked prior to Erlang/OTP 19.0. Before 19.0, only a contiguous memory block where the young heap and stack resided was considered to be part of the young heap. Heap fragments and messages were immediately copied into the young heap before they could be inspected by the Erlang program. The behaviour introduced in 19.0 is superior in many ways - most significantly it reduces the number of necessary copy operations and the root set for garbage collection.
+
+## Sizing the heap
+
+As mentioned in the Overview the size of the heap [grows](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L247) to accommodate more data. Heaps grow in two stages, first a [variation of the Fibonacci sequence](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L199-L208) is used starting at 233 words. Then at about 1 mega words the heap only [grows in 20% increments](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L215-L227).
+
+There are two occasions when the young heap grows:
+
+* if the total size of the heap + message and heap fragments exceeds the current heap size.
+* if after a fullsweep, the total amount of live objects is greater than 75%.
+
+There are two occasions when the young heap is shrunk:
+
+* if after a young collection, the total amount of live objects is less than 25% of the heap and the young heap is "big"
+* if after a fullsweep, the total amount of live objects is less than 25% of the heap.
+
+The old heap is always one step ahead in the heap growth stages than the young heap.
+
+## Literals
+
+When garbage collecting a heap (young or old) all literals are left in place and not copied. To figure out if a term should be copied or not when doing a garbage collection the following pseudo code is used:
+
+```c
+if (erts_is_literal(ptr) || (on_old_heap(ptr) && !fullsweep)) {
+  /* literal or non fullsweep - do not copy */
+} else {
+  copy(ptr);
+}
+```
+
+The [`erts_is_literal`](https://github.com/erlang/otp/blob/OTP-19.0/erts/emulator/beam/global.h#L1452-L1465) check works differently on different architectures and operating systems.
+
+On 64 bit systems that allow mapping of unreserved virtual memory areas (most operating systems except Windows), an area of size 1 GB (by default) is mapped and then all literals are placed within that area. Then all that has to be done to determine if something is a literal or not is [two quick pointer checks](https://github.com/erlang/otp/blob/OTP-19.0/erts/emulator/beam/erl_alloc.h#L322-L324). This system relies on the fact that a memory page that has not been touched yet does not take any actual space. So even if 1 GB of virtual memory is mapped, only the memory which is actually needed for literals is allocated in ram. The size of the literal area is configurable through the +MIscs erts_alloc option.
+
+On 32 bit systems, there is not enough virtual memory space to allocate 1 GB for just literals, so instead small 256 KB sized literal regions are created on demand and a card mark bit-array of the entire 32 bit memory space is then used to determine if a term is a literal or not. Since the total memory space is only 32 bits, the card mark bit-array is only 256 words large. On a 64 bit system the same bit-array would have to be 1 tera words large, so this technique is only viable on 32 bit systems. Doing [lookups in the array](https://github.com/erlang/otp/blob/OTP-19.0/erts/emulator/beam/erl_alloc.h#L316-L319) is a little more expensive then just doing the pointer checks that can be done in 64 bit systems, but not extremely so.
+
+On 64 bit windows, on which erts_alloc cannot do unreserved virtual memory mappings, a [special tag](https://github.com/erlang/otp/blob/OTP-19.0/erts/emulator/beam/erl_term.h#L59) within the Erlang term object is used to determine if something [is a literal or not](https://github.com/erlang/otp/blob/OTP-19.0/erts/emulator/beam/erl_term.h#L248-L252). This is very cheap, however, the tag is only available on 64 bit machines, and it is possible to do a great deal of other nice optimizations with this tag in the future (like for instance a more compact list implementation) so it is not used on operating systems where it is not needed.
+
+This behaviour is different from how it worked prior to Erlang/OTP 19.0. Before 19.0 the literal check was done by checking if the pointer pointed to the young or old heap block. If it did not, then it was considered a literal. This lead to considerable overhead and strange memory usage scenarios, so it was removed in 19.0.
+
+## Binary heap
+
+The binary heap works as a large object space for binary terms that are greater than 64 bytes (from now on called off-heap binaries). The binary heap is [reference counted](https://en.wikipedia.org/wiki/Reference_counting) and a pointer to the off-heap binary is stored on the process heap. To keep track of when to decrement the reference counter of the off-heap binary, a linked list (the MSO - mark and sweep object list) containing funs and externals as well as off-heap binaries is woven through the heap. After a garbage collection is done, the [MSO list is swept](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2299) and any off-heap binary that does not have a [move marker](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2325) written into the header words has its reference [decremented and is potentially freed](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2344-L2367).
+
+All items in the MSO list are ordered by the time they were added to the process heap, so when doing a minor garbage collection, the MSO sweeper only has to sweep until it [encounters an off-heap binary that is on the old heap](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2369).
+
+### Virtual Binary heap
+
+Each process has a virtual binary heap associated with it that has the size of all the current off-heap binaries that the process has references to. The virtual binary heap also has a limit and grows and shrinks depending on how off-heap binaries are used by the process. The same growth and shrink mechanisms are used for the binary heap and for the term heap, so first a Fibonacci like series and then 20% growth.
+
+The virtual binary heap exists in order to [trigger](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/beam_emu.c#L364) garbage collections earlier when potentially there is a very large amount of off-heap binary data that could be reclaimed. This approach does not catch all problems with binary memory not being released soon enough, but it does catch a lot of them.
+
+## Messages
+
+Messages can become a part of the process heap at different times. This depends on how the process is configured.
+We can configure the behaviour of each process using `process_flag(message_queue_data, off_heap | on_heap)` or we can set a default for all processes at start using the option `+hmqd`.
+
+What do these different configurations do and when should we use them?
+Let's start by going through what happens when one Erlang process sends a message to another.
+The sending process needs to do a couple of things:
+
+1. calculate [how large](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_message.c#L1031) the message to be sent is
+2. [allocate enough space](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_message.c#L1033) to fit the entire message
+3. [copy](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_message.c#L1040) the message payload
+4. allocate a message container with some meta data
+5. [insert](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_message.c#L502) the message container in the receiver process' [message queue](https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_process.h#L1042)
+
+The process flag `message_queue_data`, of the receiver process, controls the message allocating strategy of the sender process in step 2 and also how the message data is treated by the garbage collector.
+
+The procedure above is different from how it worked prior to 19.0. Before 19.0 there was no configuration option, the behaviour was always very similar to how the `on_heap` option is in 19.0.
+
+### Message allocating strategies
+
+If set to `on_heap`, the sending process will first attempt to allocate the space for the message directly on the young heap block of the receiving process.
+This is not always possible as it requires taking the *main lock* of the receiving process. The main lock is also held when the process is executing. The possibility for a lock conflict is thus likely in an intensely collaborating system.
+If the sending process cannot acquire the main lock, a heap fragment is instead created for the message and the message payload is copied onto that.
+With the `off_heap` option the sender process always creates heap fragments for messages sent to that process.
+
+There are a bunch of different tradeoffs that come into play when trying to figure out which of the strategies you want to use.
+
+Using `off_heap` may seem like a nice way to get a more scalable system as you get very little contention on the main locks, however, allocating a heap fragment is more expensive than allocating on the heap of the receiving process. So if it is very unlikely that contention will occur, it is more efficient to try to allocate the message directly on the receiving process' heap.
+
+Using `on_heap` will force all messages to be part of on the young heap which will increase the amount of data that the garbage collector has to move. So if a garbage collection is triggered while processing a large amount of messages, they will be copied to the young heap. This in turn will lead to that the messages will quickly be promoted to the old heap and thus increase its size. This may be good or bad depending on exactly what the process does. A large old heap means that the young heap will also be larger, which in turn means that less garbage collections will be triggered while processing the message queue. This will temporarly increase the throughput of the process at the cost of more memory usage. However, if after all the messages have been consumed the process enters a state where a lot less messages are being received. Then it may be a long time before the next fullsweep garbage collection happens and the messages that are on the old heap will be there until that happens. So while `on_heap` is potentially faster than the other modes, it uses more memory for a longer time. This mode is the legacy mode which is almost how the message queue was handled before Erlang/OTP 19.0.
+
+Which one of these strategies is best depends a lot on what the process is doing and how it interacts with other processes. So, as always, profile the application and see how it behaves with the different options.
+
+   <a name="cheney">[1]</a>: C. J. Cheney. A nonrecursive list compacting algorithm. Commun. ACM, 13(11):677–678, Nov. 1970.
+
+   <a name="ungar">[2]</a>: D. Ungar. Generation scavenging: A non-disruptive high performance storage reclamation algorithm. SIGSOFT Softw. Eng. Notes, 9(3):157–167, Apr. 1984.
diff --git a/erts/emulator/internal_doc/beam_makeops.md b/erts/emulator/internal_doc/beam_makeops.md
new file mode 100644
index 0000000000..1da8d2ab05
--- /dev/null
+++ b/erts/emulator/internal_doc/beam_makeops.md
@@ -0,0 +1,1846 @@
+The beam\_makeops script
+=======================
+
+This document describes the **beam\_makeops** script.
+
+Introduction
+------------
+
+The **beam\_makeops** Perl script is used at build-time by both the
+compiler and runtime system.  Given a number of input files (all with
+the extension `.tab`), it will generate source files used by the
+Erlang compiler and by the runtime system to load and execute BEAM
+instructions.
+
+Essentially those `.tab` files define:
+
+* External generic BEAM instructions.  They are the instructions that
+are known to both the compiler and the runtime system.  Generic
+instructions are stable between releases.  New generic instructions
+with high numbers than previous instructions can be added in major
+releases.  The OTP 20 release has 159 external generic instructions.
+
+* Internal generic instructions.  They are known only to the runtime
+system and can be changed at any time without compatibility issues.
+They are created by transformation rules (described next).
+
+* Rules for transforming one or more generic instructions to other
+generic instructions.  The transformation rules allow combining,
+splitting, and removal of instructions, as well as shuffling operands.
+Because of the transformation rules, the runtime can have many
+internal generic instructions that are only known to runtime system.
+
+* Specific BEAM instructions.  The specific instructions are the
+instructions that are actually executed by the runtime system.  They
+can be changed at any time without causing compatibility issues.
+The loader translates generic instructions to specific instructions.
+In general, for each generic instruction, there exists a family of
+specific instructions.  The OTP 20 release has 389 specific
+instructions.
+
+* The implementation of specific instructions.
+
+Generic instructions have typed operands. Here are a few examples of
+operands for `move/2`:
+
+    {move,{atom,id},{x,5}}.
+    {move,{x,3},{x,0}}.
+    {move,{x,2},{y,1}}.
+
+When those instructions are loaded, the loader rewrites them
+to specific instructions:
+
+    move_cx id 5
+    move_xx 3 0
+    move_xy 2 1
+
+Corresponding to each generic instruction, there is a family of
+specific instructions.  The types that an instance of a specific
+instruction can handle are encoded in the instruction names.  For
+example, `move_xy` takes an X register number as the first operand and
+a Y register number as the second operand.  `move_cx` takes a tagged
+Erlang term as the first operand and an X register number as the
+second operand.
+
+An example: the move instruction
+--------------------------------
+
+Using the `move` instruction as an example, we will give a quick
+tour to show the main features of **beam\_makeops**.
+
+In the `compiler` application, in the file `genop.tab`, there is the
+following line:
+
+    64: move/2
+
+This is a definition of an external generic BEAM instruction. Most
+importantly it specifices that the opcode is 64.  It also defines that
+it has two operands.  The BEAM assembler will use the opcode when
+creating `.beam` files.  The compiler does not really need the arity,
+but it will use it as an internal sanity check when assembling the
+BEAM code.
+
+Let's have a look at `ops.tab` in `erts/emulator/beam`, where the
+specific `move` instructions are defined.  Here are a few of them:
+
+    move x x
+    move x y
+    move c x
+
+Each specific instructions is defined by following the name of the
+instruction with the types for each operand.  An operand type is a
+single letter.  For example, `x` means an X register, `y`
+means a Y register, and `c` is a "constant" (a tagged term such as
+an integer, an atom, or a literal).
+
+Now let's look at the implementation of the `move` instruction.  There
+are multiple files containing implementations of instructions in the
+`erts/emulator/beam` directory.  The `move` instruction is defined in
+`instrs.tab`.  It looks like this:
+
+    move(Src, Dst) {
+        $Dst = $Src;
+    }
+
+The implementation for an instruction largely follows the C syntax,
+except that the variables in the function head don't have any types.
+The `$` before an identifier denotes a macro expansion.  Thus,
+`$Src` will expand to the code to pick up the source operand for
+the instruction and `$Dst` to the code for the destination register.
+
+We will look at the code for each specific instruction in turn.  To
+make the code easier to understand, let's first look at the memory
+layout for the instruction `{move,{atom,id},{x,5}}`:
+
+         +--------------------+--------------------+
+    I -> |                 40 |       &&lb_move_cx |
+         +--------------------+--------------------+
+         |                        Tagged atom 'id' |
+         +--------------------+--------------------+
+
+This example and all other examples in the document assumes a 64-bit
+archictecture, and furthermore that pointers to C code fit in 32 bits.
+
+`I` in the BEAM virtual machine is the instruction pointer.  When BEAM
+executes an instruction, `I` points to the first word of the
+instruction.
+
+`&&lb_move_cx` is the address to C code that implements `move_cx`.  It
+is stored in the lower 32 bits of the word.  In the upper 32 bits is
+the byte offset to the X register; the register number 5 has been
+multiplied by the word size size 8.
+
+In the next word the tagged atom `id` is stored.
+
+With that background, we can look at the generated code for `move_cx`
+in `beam_hot.h`:
+
+    OpCase(move_cx):
+    {
+      BeamInstr next_pf = BeamCodeAddr(I[2]);
+      xb(BeamExtraData(I[0])) = I[1];
+      I += 2;
+      ASSERT(VALID_INSTR(next_pf));
+      GotoPF(next_pf);
+    }
+
+We will go through each line in turn.
+
+* `OpCase(move_cx):` defines a label for the instruction.  The
+`OpCase()` macro is defined in `beam_emu.c`.  It will expand this line
+to `lb_move_cx:`.
+
+* `BeamInstr next_pf = BeamCodeAddr(I[2]);` fetches the pointer to
+code for the next instruction to be executed.  The `BeamCodeAddr()`
+macro extracts the pointer from the lower 32 bits of the instruction
+word.
+
+* `xb(BeamExtraData(I[0])) = I[1];` is the expansion of `$Dst = $Src`.
+`BeamExtraData()` is a macro that will extract the upper 32 bits from
+the instruction word.  In this example, it will return 40 which is the
+byte offset for X register 5.  The `xb()` macro will cast a byte
+pointer to an `Eterm` pointer and dereference it.  The `I[1]` on
+the right side of the `=` fetches an Erlang term (the atom `id` in
+this case).
+
+* `I += 2` advances the instruction pointer to the next
+instruction.
+
+* In a debug-compiled emulator, `ASSERT(VALID_INSTR(next_pf));` makes
+sure that `next_pf` is a valid instruction (that is, that it points
+within the `process_main()` function in `beam_emu.c`).
+
+* `GotoPF(next_pf);` transfers control to the next instruction.
+
+Now let's look at the implementation of `move_xx`:
+
+    OpCase(move_xx):
+    {
+      Eterm tmp_packed1 = BeamExtraData(I[0]);
+      BeamInstr next_pf = BeamCodeAddr(I[1]);
+      xb((tmp_packed1>>BEAM_TIGHT_SHIFT)) = xb(tmp_packed1&BEAM_TIGHT_MASK);
+      I += 1;
+      ASSERT(VALID_INSTR(next_pf));
+      GotoPF(next_pf);
+    }
+
+We will go through the lines that are new or have changed compared to
+`move_cx`.
+
+* `Eterm tmp_packed1 = BeamExtraData(I[0]);` picks up both X register
+numbers packed into the upper 32 bits of the instruction word.
+
+* `BeamInstr next_pf = BeamCodeAddr(I[1]);` pre-fetches the address of
+the next instruction. Note that because both X registers operands fits
+into the instruction word, the next instruction is in the very next
+word.
+
+* `xb((tmp_packed1>>BEAM_TIGHT_SHIFT)) = xb(tmp_packed1&BEAM_TIGHT_MASK);`
+copies the source to the destination.  (For a 64-bit architecture,
+`BEAM_TIGHT_SHIFT` is 16 and `BEAM_TIGHT_MASK` is `0xFFFF`.)
+
+* `I += 1;` advances the instruction pointer to the next instruction.
+
+`move_xy` is almost identical to `move_xx`.  The only difference is
+the use of the `yb()` macro instead of `xb()` to reference the
+destination register:
+
+    OpCase(move_xy):
+    {
+      Eterm tmp_packed1 = BeamExtraData(I[0]);
+      BeamInstr next_pf = BeamCodeAddr(I[1]);
+      yb((tmp_packed1>>BEAM_TIGHT_SHIFT)) = xb(tmp_packed1&BEAM_TIGHT_MASK);
+      I += 1;
+      ASSERT(VALID_INSTR(next_pf));
+      GotoPF(next_pf);
+    }
+
+### Transformation rules ###
+
+Next let's look at how we can do some optimizations using transformation
+rules.  For simple instructions such as `move/2`, the instruction dispatch
+overhead can be substantial.  A simple optimization is to combine common
+instructions sequences to a single instruction.  One such common sequence
+is multiple `move` instructions moving X registers to Y registers.
+
+Using the following rule we can combine two `move` instructions
+to a `move2` instruction:
+
+    move X1=x Y1=y | move X2=x Y2=y => move2 X1 Y1 X2 Y2
+
+The left side of the arrow (`=>`) is a pattern.  If the pattern
+matches, the matching instructions will be replaced by the
+instructions on the right side.  Variables in a pattern must start
+with an uppercase letter just as in Erlang.  A pattern variable may be
+followed `=` and one or more type letters to constrain the match to
+one of those types.  The variables that are bound on the left side can
+be used on the right side.
+
+We will also need to define a specific instruction and an implementation:
+
+    # In ops.tab
+    move2 x y x y
+
+    // In instrs.tab
+    move2(S1, D1, S2, D2) {
+        Eterm V1, V2;
+        V1 = $S1;
+        V2 = $S2;
+        $D1 = V1;
+        $D2 = V2;
+    }
+
+When the loader has found a match and replaced the matched instructions,
+it will match the new instructions against the transformation rules.
+Because of that, we can define the rule for a `move3/6` instruction
+as follows:
+
+    move2 X1=x Y1=y X2=x Y2=y | move X3=x Y3=y => \
+          move3 X1 Y1 X2 Y2 X3 Y3
+
+(A `\` before a newline can be used to break a long line for readability.)
+
+It would also be possible to define it like this:
+
+    move X1=x Y1=y | move X2=x Y2=y | move X3=x Y3=y => \
+         move3 X1 Y1 X2 Y2 X3 Y3
+
+but in that case it must be defined before the rule for `move2/4`
+because the first matching rule will be applied.
+
+One must be careful not to create infinite loops.  For example, if we
+for some reason would want to reverse the operand order for the `move`
+instruction, we must not do like this:
+
+    move Src Dst => move Dst Src
+
+The loader would swap the operands forever.  To avoid the loop, we must
+rename the instruction.  For example:
+
+    move Src Dst => assign Dst Src
+
+This concludes the quick tour of the features of **beam\_makeops**.
+
+Short overview of instruction loading
+-------------------------------------
+
+To give some background to the rest of this document, here follows a
+quick overview of how instructions are loaded.
+
+* The loader reads and decodes one instruction at a time from the BEAM
+code and creates a generic instruction.  Many transformation rules
+must look at multiple instructions, so the loader will
+keep multiple generic instructions in a linked list.
+
+* The loader tries to apply transformation rules against the
+generic instructions in the linked list.  If a rule matches, the
+matched instructions will be removed and replaced with new
+generic instructions constructed from the right side of the
+transformation.
+
+* If a transformation rule matched, the loader applies the
+transformation rules again.
+
+* If no transformation rule match, the loader will begin rewriting
+the first of generic instructions to a specific instruction.
+
+* First the loader will search for a specific operation where the
+types for all operands match the type for the generic instruction.
+The first matching instruction will be selected.  **beam\_makeops**
+has ordered the specific instructions so that instructions with more
+specific operands comes before instructions with less specific
+operands.  For example, `move_nx` is more specific than `move_cx`.  If
+the first operand is `[]` (NIL), `move_nx` will be selected.
+
+* Given the opcode for the selected specific instruction, the loader
+looks up the pointer to the C code for the instruction and stores
+in the code area for the module being loaded.
+
+* The loader translates each operand to a machine word and stores it
+in the code area.  The operand type for the selected specific
+instruction guides the translation.  For example, if the type is `e`,
+the value of the operand is an index into an arry of external
+functions and will be translated to a pointer to the export entry for
+the function to call.  If the type is `x`, the number of the X
+register will be multiplied by the word size to produce a byte offset.
+
+* The loader runs the packing engine to pack multiple operands into a
+single word.  The packing engine is controlled by a small program,
+which is a string where each character is an instruction.  For
+example, the code to pack the operands for `move_xy` is `"22#"` (on a
+64-bit machine).  That program will pack the byte offsets for both
+registers into the same word as the pointer to C code.
+
+Running beam_makeops
+--------------------
+
+**beam\_makeops** is found in `$ERL_TOP/erts/emulator/utils`.  Options
+start with a hyphen (`-`).  The options are followed by the name of
+the input files.  By convention, all input files have the extension
+`.tab`, but is not enforced by **beam\_makeops**.
+
+### The -outdir option ###
+
+The option `-outdir Directory` specifies the output directory for
+the generated files.  Default is the current working directory.
+
+### Running beam_makeops for the compiler ###
+
+Give the option `-compiler` to produce output files for the compiler.
+The following files will be written to the output directory:
+
+* `beam_opcodes.erl` - Used primarily by `beam_asm` and `beam_diasm`.
+
+* `beam_opcode.hrl` - Used by `beam_asm`.  It contains tag definitions
+used for encoding instruction operands.
+
+The input file should only contain the definition of BEAM_FORMAT_NUMBER
+and external generic instructions.  (Everything else would be ignored.)
+
+### Running beam_makeops for the emulator ###
+
+Give the option `-emulator` to produce output files for the emulator.
+The following output files will be generated in the output directory.
+
+* `beam_hot.h`, `beam_warm.h`, `beam_cold.`h - Implementation of
+instructions.  Included inside the `process_main()` function in
+`beam_emu.c`.
+
+* `beam_opcodes.c` - Defines static data used by the loader
+(`beam_load.c`).  Data about generic instructions, specific
+instructions (including how to pack their operands), and
+transformation rules are all part of this file.
+
+* `beam_opcodes.h` - Miscellanous preprocessor definitions, mainly
+used by `beam_load.c` but also by `beam_{hot,warm,cold}.h`.
+
+* `beam_pred_funcs.h` - Included by `beam_load.c`.  Contains defines
+needed to call guard constraints in transformation rules.
+
+* `beam_tr_funcs.h` - Included by `beam_load.c`.  Contains defines
+needed to call a C function to the right of a transformation rule.
+
+The following options can be given:
+
+* `wordsize 32|64` - Defines the word size.  Default is 32.
+
+* `code-model Model` - The code model as given to `-mcmodel` option
+for GCC.  Default is `unknown`.  If the code model is `small` (and
+the word size is 64 bits), **beam\_makeops** will pack operands
+into the upper 32 bits of the instruction word.
+
+* `DSymbol=0|1` - Defines the value for a symbol.  The symbol can be
+used in `%if` and `%unless` directives.
+
+Syntax of .tab files
+--------------------
+
+### Comments ###
+
+Any line starting with `#` is a comment and is ignored.
+
+A line with `//` is also a comment.  It is recommended to only
+use this style of comments in files that define implementations of
+instructions.
+
+A long line can be broken into shorter lines by a placing a`\` before
+the newline.
+
+### Variable definitions ###
+
+A variable definition binds a variable to a Perl variable.  It is only
+meaningful to add a new definition if **beam\_makeops** is updated
+at the same time to use the variable.  A variable definition looks this:
+
+*name*=*value*[;]
+
+where *name* is the name of a Perl variable in **beam\_makeops**,
+and *value* is the value to be given to the variable.  The line
+can optionally end with a `;` (to avoid messing up the
+C indentation mode in Emacs).
+
+Here follows a description of the variables that are defined.
+
+#### BEAM\_FORMAT\_NUMBER ####
+
+`genop.tab` has the following definition:
+
+    BEAM_FORMAT_NUMBER=0
+
+It defines the version of the instruction set (which will be
+included in the code header in the BEAM code).  Theoretically,
+the version could be bumped, and all instructions changed.
+In practice, we would have two support two instruction sets
+in the runtime system for at least two releases, so it will
+probably never happen in practice.
+
+#### GC\_REGEXP ####
+
+In `macros.tab`, there is a definition of `GC_REGEXP`.
+It will be described in [a later section](#the-gc_regexp-definition).
+
+### Directives ###
+
+There are directives to classify specific instructions depending
+on how frequently used they are:
+
+* `%hot` - Implementation will be placed in `beam_hot.h`. Frequently
+executed instructions.
+
+* `%warm` - Implementation will be placed in `beam_warm.h`.  Binary
+syntax instructions.
+
+* `%cold` - Implementation will be placed in `beam_cold.h`. Trace
+instructions and infrequently used instructions.
+
+Default is `%hot`.  The directives will be applied to declarations
+of the specific instruction that follow.  Here is an example:
+
+    %cold
+    is_number f? xy
+    %hot
+
+#### Conditional compilation directives ####
+
+The `%if` directive includes a range of lines if a condition is
+true.  For example:
+
+    %if ARCH_64
+    i_bs_get_integer_32 x f? x
+    %endif
+
+The specific instruction `i_bs_get_integer_32` will only be defined
+on a 64-bit machine.
+
+The condition can be inverted by using `%unless` instead of `%if`:
+
+    %unless NO_FPE_SIGNALS
+    fcheckerror p => i_fcheckerror
+    i_fcheckerror
+    fclearerror
+    %endif
+
+It is also possible to add an `%else` clause:
+
+    %if ARCH_64
+    BS_SAFE_MUL(A, B, Fail, Dst) {
+        Uint64 res = ($A) * ($B);
+        if (res / $B != $A) {
+            $Fail;
+        }
+        $Dst = res;
+    }
+    %else
+    BS_SAFE_MUL(A, B, Fail, Dst) {
+        Uint64 res = (Uint64)($A) * (Uint64)($B);
+        if ((res >> (8*sizeof(Uint))) != 0) {
+            $Fail;
+        }
+        $Dst = res;
+    }
+    %endif
+
+#### Symbols that are defined in directives ####
+
+The following symbols are always defined.
+
+* `ARCH_64` - is 1 for a 64-bit machine, and 0 otherwise.
+* `ARCH_32` - is 1 for 32-bit machine, and 1 otherwise.
+
+The `Makefile` for building the emulator currently defines the
+following symbols by using the `-D` option on the command line for
+**beam\_makeops**.
+
+* `NO_FPE_SIGNALS` - 1 if FPE signals are not enable in runtime system,
+0 otherwise.
+* `USE_VM_PROBES` - 1 if the runtime system is compiled to use VM probes (support for dtrace or systemtap), 0 otherwise.
+
+### Defining external generic instructions ###
+
+External generic BEAM instructions are known to both the compiler and
+the runtime system.  They remain stable between releases.  A new major
+release may add more external generic instructions, but must not change
+the semantics for a previously defined instruction.
+
+The syntax for an external generic instruction is as follows:
+
+*opcode*: [-]*name*/*arity*
+
+*opcode* is an integer greater than or equal to 1.
+
+*name* is an identifier starting with a lowercase letter.  *arity* is
+an integer denoting the number of operands.
+
+*name* can optionally be preceded by `-` to indicate that it has been
+obsoleted.  The compiler is not allowed to generate BEAM files that
+use obsolete instructions and the loader will refuse to load BEAM
+files that use obsolete instructions.
+
+It only makes sense to define external generic instructions in the
+file `genop.tab` in `lib/compiler/src`, because the compiler must
+know about them in order to use them.
+
+New instructions must be added at the end of the file, with higher
+numbers than the previous instructions.
+
+### Defining internal generic instructions ###
+
+Internal generic instructions are known only to the runtime
+system and can be changed at any time without compatibility issues.
+
+There are two ways to define internal generic instructions:
+
+* Implicitly when a specific instruction is defined.  This is by far
+the most common way.  Whenever a specific instruction is created,
+**beam\_makeops** automatically creates an internal generic instruction
+if it does not previously exist.
+
+* Explicitly.  This is necessary only when a generic instruction does
+not have any corresponding specific instruction.
+
+The syntax for an internal generic instruction is as follows:
+
+*name*/*arity*
+
+*name* is an identifier starting with a lowercase letter.  *arity* is
+an integer denoting the number of operands.
+
+### About generic instructions in general ###
+
+Each generic instruction has an opcode.  The opcode is an integer,
+greater than or equal to 1. For an external generic instruction, it
+must be explicitly given `genop.tab`, while internal generic
+instructions are automatically numbered by **beam\_makeops**.
+
+The identity of a generic instruction is its name combined with its
+arity.  That means that it is allowed to define two distinct generic
+instructions having the same name but with different arities.  For
+example:
+
+    move_window/5
+    move_window/6
+
+Each operand of a generic instruction is tagged with its type.  A generic
+instruction can have one of the following types:
+
+* `x` - X register.
+
+* `y` - Y register.
+
+* `l` - Floating point register number.
+
+* `i` - Tagged literal integer.
+
+* `a` - Tagged literal atom.
+
+* `n` - NIL (`[]`, the empty list).
+
+* `q` - Literal that don't fit in a word, that is an object stored on
+the heap such as a list or tuple.  Any heap object type is supported,
+even types that don't have real literals such as external references.
+
+* `f` - Non-zero failure label.
+
+* `p` - Zero failure label.
+
+* `u` - Untagged integer that fits in a machine word.  It is used for many
+different purposes, such as the number of live registers in `test_heap/2`,
+as a reference to the export for `call_ext/2`, and as the flags operand for
+binary syntax instructions.  When the generic instruction is translated to a
+specific instruction, the type for the operand in the specific operation will
+tell the loader how to treat the operand.
+
+* `o` - Overflow.  If the value for an `u` operand does not fit in a machine
+word, the type of the operand will be changed to `o` (with no associated
+value).  Currently only used internally in the loader in the guard constraint
+function `binary_too_big()`.
+
+* `v` - Arity value.  Only used internally in the loader.
+
+
+### Defining specific instructions ###
+
+The specific instructions are known only to the runtime system and
+are the instructions that are actually executed.  They can be changed
+at any time without causing compatibility issues.
+
+A specific instruction can have at most 6 operands.
+
+A specific instruction is defined by first giving its name followed by
+the types for each operand.  For example:
+
+     move x y
+
+Internally, for example in the generated code and in the output from
+the BEAM disassembler, the instruction `move x y` will be called `move_xy`.
+
+The name for a specific instruction is an identifier starting with a
+lowercase letter.  A type is an lowercase or uppercase letter.
+
+All specific instructions with a given name must have the same number
+of operands. That is, the following is **not** allowed:
+
+     move x x
+     move x y x y
+
+Here follows the type letters that more or less directly corresponds
+to the types for generic instructions.
+
+* `x` - X register.  Will be loaded as a byte offset to the X register
+relative to the base of X register array.  (Can be packed with other
+operands.)
+
+* `y` - Y register.  Will be loaded as a byte offset to the Y register
+relative to the stack frame. (Can be packed with other operands.)
+
+* `r` - X register 0.  An implicit operand that will not be stored in
+the loaded code.
+
+* `l` - Floating point register number.  (Can be packed with other
+operands.)
+
+* `i` - Tagged literal integer (a SMALL that will fit in one word).
+
+* `a` - Tagged atom.
+
+* `n` - NIL or the empty list.  (Will not be stored in the loaded code.)
+
+* `q` - Tagged CONS or BOXED pointer.  That is, a term such as a list
+or tuple.  Any heap object type is supported, even types that don't
+have real literals such as external references.
+
+* `f` - Failure label (non-zero).  The target for a branch
+or call instruction.
+
+* `p` - The 0 failure label, meaning that an exception should be raised
+if the instruction fails.  (Will not be stored in the loaded code.)
+
+* `c` - Any literal term; that is, immediate literals such as SMALL,
+and CONS or BOXED pointers to literals.  (Can be used where the
+operand in the generic instruction has one of the types `i`, `a`, `n`,
+or `q`.)
+
+The types that follow do a type test of the operand at runtime; thus,
+they are generally more expensive in terms of runtime than the types
+described earlier.  However, those operand types are needed to avoid a
+combinatorial explosion in the number of specific instructions and
+overall code size of `process_main()`.
+
+* `s` - Tagged source: X register, Y register, or a literal term.  The
+tag will be tested at runtime to retrieve the value from an X
+register, a Y register, or simply use the value as a tagged Erlang
+term.  (Implementation note: An X register is tagged as a pid, and a Y
+register as a port.  Therefore the literal term must not contain a
+port or pid.)
+
+* `S` - Tagged source register (X or Y).  The tag will be tested at
+runtime to retrieve the value from an X register or a Y register.  Slighly
+cheaper than `s`.
+
+* `d` - Tagged destination register (X or Y).  The tag will be tested
+at runtime to set up a pointer to the destination register.  If the
+instrution performs a garbarge collection, it must use the
+`$REFRESH_GEN_DEST()` macro to refresh the pointer before storing to
+it (there are more details about that in a later section).
+
+* `j` - A failure label (combination of `f` and `p`).  If the branch target 0,
+an exception will be raised if instruction fails, otherwise control will be
+transfered to the target address.
+
+The types that follows are all applied to an operand that has the `u`
+type.
+
+* `t` - An untagged integer that will fit in 12 bits (0-4096).  It can be
+packed with other operands in a word.  Most often used as the number
+of live registers in instructions such as `test_heap`.
+
+* `I` - An untagged integer that will fit in 32 bits.  It can be
+packed with other operands in a word on a 64-bit system.
+
+* `W` - Untagged integer or pointer.  Not possible to pack with other
+operands.
+
+* `e` - Pointer to an export entry.  Use by call instructions that call
+other modules, such as `call_ext`.
+
+* `L` - A label.  Only used by the `label/1` instruction.
+
+* `b` - Pointer to BIF.  Used by instructions that BIFs, such as
+`call_bif`.
+
+* `A` - A tagged arityvalue.  Used in instructions that test the arity
+of a tuple.
+
+* `P` - A byte offset into a tuple.
+
+* `Q` - A byte offset into the stack.  Used for updating the frame
+pointer register.  Can be packed with other operands.
+
+When the loader translates a generic instruction a specific
+instruction, it will choose the most specific instruction that will
+fit the types.  Consider the following two instructions:
+
+    move c x
+    move n x
+
+The `c` operand can encode any literal value, including NIL.  The
+`n` operand only works for NIL.  If we have the generic instruction
+`{move,nil,{x,1}}`, the loader will translate it to `move_nx 1`
+because `move n x` is more specific.  `move_nx` could be slightly
+faster or smaller (depending on the architecture), because the `[]`
+is not stored explicitly as an operand.
+
+#### Syntactic sugar for specific instructions ####
+
+It is possible to specify more than one type letter for each operand.
+Here is an example:
+
+    move cxy xy
+
+This is syntactic sugar for:
+
+    move c x
+    move c y
+    move x x
+    move x y
+    move y x
+    move y y
+
+Note the difference between `move c xy` and `move c d`.  Note that `move c xy`
+is equivalent to the following two definitions:
+
+    move c x
+    move c y
+
+On the other hand, `move c d` is a single instruction.  At runtime,
+the `d` operand will be tested to see whether it refers to an X
+register or a Y register, and a pointer to the register will be set
+up.
+
+#### The '?' type modifier ####
+
+The character `?` can be added to the end of an operand to indicate
+that the operand will not be used every time the instruction is executed.
+For example:
+
+    allocate_heap t I t?
+    is_eq_exact f? x xy
+
+In `allocate_heap`, the last operand is the number of live registers.
+It will only be used if there is not enough heap space and a garbage
+collection must be performed.
+
+In `is_eq_exact`, the failure address (the first operand) will only be
+used if the two register operands are not equal.
+
+Knowing that an operand is not always used can improve how packing
+is done for some instructions.
+
+For the `allocate_heap` instruction, without the `?` the packing would
+be done like this:
+
+         +--------------------+--------------------+
+    I -> |       Stack needed | &&lb_allocate_heap +
+         +--------------------+--------------------+
+         |        Heap needed | Live registers     +
+         +--------------------+--------------------+
+
+"Stack needed" and "Heap needed" are always used, but they are in
+different words.  Thus, at runtime the `allocate_heap` instruction
+must read both words from memory even though it will not always use
+"Live registers".
+
+With the `?`, the operands will be packed like this:
+
+         +--------------------+--------------------+
+    I -> |     Live registers | &&lb_allocate_heap +
+         +--------------------+--------------------+
+         |        Heap needed |       Stack needed +
+         +--------------------+--------------------+
+
+Now "Stack needed" and "Heap needed" are in the same word.
+
+### Defining transformation rules ###
+
+Transformation rules are used to rewrite generic instructions to other
+generic instructions.  The transformations rules are applied
+repeatedly until no rule match.  At that point, the first instruction
+in the resulting instruction sequence will be converted to a specific
+instruction and added to the code for the module being loaded.  Then
+the transformation rules for the remaining instructions are run in the
+same way.
+
+A rule is recognized by its right-pointer arrow: `=>`.  To the left of
+the arrow is one or more instruction patterns, separated by `|`.  To
+the right of the arrow is zero or more instructions, separated by `|`.
+If the instructions from the BEAM code matches the instruction
+patterns on the left side, they will be replaced with instructions on
+the right side (or removed if there are no instructions on the right).
+
+#### Defining instruction patterns ####
+
+We will start looking at the patterns on the left side of the arrow.
+
+A pattern for an instruction consists of its name, followed by a pattern
+for each of its operands.  The operand patterns are separated by spaces.
+
+The simplest possible pattern is a variable.  Just like in Erlang,
+a variable must begin with an uppercase letter.  If the same variable is
+used in multiple operands, the pattern will only match if the operands
+are equal.  For example:
+
+    move Same Same =>
+
+This pattern will match if the operands for `move` are the same.  If
+the pattern match, the instruction will be removed.  (That used to be an
+actual rule a long time ago when the compiler would occasionally produce
+instructions such as `{move,{x,2},{x,2}}`.)
+
+Variables that have been bound on the left side can be used on the
+right side.  For example, this rule will rewrite all `move` instructions
+to `assign` instructions with the operands swapped:
+
+    move Src Dst => assign Dst Src
+
+If we only want to match operands of a certain type, we can
+use a type constraint.  A type constraint consists of one or more
+lowercase letters, each specifying a type.  For example:
+
+    is_integer Fail an => jump Fail
+
+The second operand pattern, `an`, will match if the second operand is
+either an atom or NIL (the empty list).  In case of a match, the
+`is_integer/2` instruction will be replaced with a `jump/1`
+instruction.
+
+An operand pattern can bind a variable and constrain the type at the
+same time by following the variable with a `=` and the constraint.
+For example:
+
+    is_eq_exact Fail=f R=xy C=q => i_is_eq_exact_literal Fail R C
+
+Here the `is_eq_exact` instruction is replaced with a specialized instruction
+that only compares literals, but only if the first operand is a register and
+the second operand is a literal.
+
+#### Further constraining patterns ####
+
+In addition to specifying a type letter, the actual value for the type can
+be specified.  For example:
+
+    move C=c x==1 => move_x1 C
+
+Here the second operand of `move` is constrained to be X register 1.
+
+When specifying an atom constraint, the atom is written as it would be
+in the C source code.  That is, it needs an `am_` prefix, and it must
+be listed in `atom.names`.  For example:
+
+    is_boolean Fail=f a==am_true =>
+    is_boolean Fail=f a==am_false =>
+
+There are several constraints available for testing whether a call is to a BIF
+or a function.
+
+The constraint `u$is_bif` will test whether the given operand refers to a BIF.
+For example:
+
+    call_ext u Bif=u$is_bif => call_bif Bif
+    call_ext u Func         => i_call_ext Func
+
+The `call_ext` instruction can be used to call functions written in
+Erlang as well as BIFs (or more properly called SNIFs).  The
+`u$is_bif` constraint will match if the operand refers to a BIF (that
+is, if it is listed in the file `bif.tab`).  Note that `u$is_bif`
+should only be applied to operands that are known to contain an index
+to the import table chunk in the BEAM file (such operands have the
+type `b` or `e` in the corresponding specific instruction).  If
+applied to other `u` operands, it will at best return a nonsense
+result.
+
+The `u$is_not_bif` constraint matches if the operand does not refer to
+a BIF (not listed in `bif.tab`).  For example:
+
+    move S X0=x==0 | line Loc | call_ext_last Ar Func=u$is_not_bif D => \
+         move S X0 | call_ext_last Ar Func D
+
+The `u$bif:Module:Name/Arity` constraint tests whether the given
+operand refers to a specific BIF.  Note that `Module:Name/Arity`
+**must** be an existing BIF defined in `bif.tab`, or there will
+be a compilation error.  It is useful when a call to a specific BIF
+should be replaced with an instruction as in this example:
+
+    gc_bif2 Fail Live u$bif:erlang:splus/2 S1 S2 Dst => \
+         gen_plus Fail Live S1 S2 Dst
+
+Here the call to the GC BIF `'+'/2` will be replaced with the instruction
+`gen_plus/5`.  Note that the same name as used in the C source code must be
+used for the BIF, which in this case is `splus`.  It is defined like this
+in `bit.tab`:
+
+    ubif erlang:'+'/2 splus_2
+
+The `u$func:Module:Name/Arity` will test whether the given operand is a
+a specific function.  Here is an example:
+
+    bif1 Fail u$func:erlang:is_constant/1 Src Dst => too_old_compiler
+
+`is_constant/1` used to be a BIF a long time ago.  The transformation
+replaces the call with the `too_old_compiler` instruction which will produce
+a nicer error message than the default error would be for a missing guard BIF.
+
+#### Type constraints allowed in patterns ####
+
+Here are all type letters that are allowed on the left side of a transformation
+rule.
+
+* `u` - An untagged integer that fits in a machine word.
+
+* `x` - X register.
+
+* `y` - Y register.
+
+* `l` - Floating point register number.
+
+* `i` - Tagged literal integer.
+
+* `a` - Tagged literal atom.
+
+* `n` - NIL (`[]`, the empty list).
+
+* `q` - Literals that don't fit in a word, such as list or tuples.
+
+* `f` - Non-zero failure label.
+
+* `p` - The zero failure label.
+
+* `j` - Any label.  Equivalent to `fp`.
+
+* `c` - Any literal term.  Equivalent to `ainq`.
+
+* `s` - X register, Y register, or any literal term.  Equivalent to `xyc`.
+
+* `d` - X or Y register.  Equivalent to `xy`.  (In a pattern `d` will
+match both source and destination registers.  As an operand in a specific
+instruction, it must only be used for a destination register.)
+
+* `o` - Overflow.  An untagged integer that does not fit in a machine word.
+
+#### Guard constraints ####
+
+If the constraints described so far is not enough, additional
+constraints can be written in C in `beam_load.c` and be called as a
+guard function on the left side of the transformation.  If the guard
+function returns a non-zero value, the matching of the rule will
+continue, otherwise the match will fail.  For example:
+
+    ensure_map Lit=q | literal_is_map(Lit) =>
+
+The guard test `literal_is_map/1` tests whether the given literal is a map.
+If the literal is a map, the instruction is unnecessary and can be removed.
+
+It is outside the scope for this document to describe in detail how such
+guard functions are written, but for the curious here is the implementation
+of `literal_is_map()`:
+
+    static int
+    literal_is_map(LoaderState* stp, GenOpArg Lit)
+    {
+        Eterm term;
+
+        ASSERT(Lit.type == TAG_q);
+        term = stp->literals[Lit.val].term;
+        return is_map(term);
+    }
+
+#### Handling instruction with variable number of operands ####
+
+Some instructions, such as `select_val/3`, essentially has a variable
+number of operands.  Such instructions have a `{list,[...]}` operand
+as their last operand in the BEAM assembly code.  For example:
+
+    {select_val,{x,0},
+                {f,1},
+                {list,[{atom,b},{f,4},{atom,a},{f,5}]}}.
+
+The loader will convert a `{list,[...]}` operand to an `u` operand whose
+value is the number of elements in the list, followed by each element in
+the list.  The instruction above would be translated to the following
+generic instruction:
+
+    {select_val,{x,0},{f,1},{u,4},{atom,b},{f,4},{atom,a},{f,5}}
+
+To match a variable number of arguments we need to use the special
+operand type `*` like this:
+
+    select_val Src=aiq Fail=f Size=u List=* => \
+        i_const_select_val Src Fail Size List
+
+This transformation renames a `select_val/3` instruction
+with a constant source operand to `i_const_select_val/3`.
+
+#### Constructing new instructions on the right side ####
+
+The most common operand on the right side is a variable that was bound while
+matching the left side.  For example:
+
+    trim N Remaining => i_trim N
+
+An operand can also be a type letter to construct an operand of that type.
+Each type has a default value.  For example, the type `x` has the default
+value 1023, which is the highest X register.  That makes `x` on the right
+side a convenient shortcut for a temporary X register.  For example:
+
+    is_number Fail Literal=q => move Literal x | is_number Fail x
+
+If the second operand for `is_number/2` is a literal, it will be moved to
+X register 1023.  Then `is_number/2` will test whether the value stored in
+X register 1023 is a number.
+
+This kind of transformation is useful when it is rare that an operand can
+be anything else but a register.  In the case of `is_number/2`, the second
+operand is always a register unless the compiler optimizations have been
+disabled.
+
+If the default value is not suitable, the type letter can be followed
+by `=` and a value.  Most types take an integer value.  The value for
+an atom is written the same way as in the C source code.  For example,
+the atom `false` is written as `am_false`.  The atom must be listed in
+`atom.names`.
+
+Here is an example showing how values can be specified:
+
+    bs_put_utf32 Fail=j Flags=u Src=s => \
+        i_bs_validate_unicode Fail Src | \
+        bs_put_integer Fail i=32 u=1 Flags Src
+
+#### Type letters on the right side ####
+
+Here follows all types that are allowed to be used in operands for
+instructions being constructed on the right side of a transformation
+rule.
+
+* `u` - Construct an untagged integer.  The default value is 0.
+
+* `x` - X register.  The default value is 1023.  That makes `x` convenient to
+use as a temporary X register.
+
+* `y` - Y register.  The default value is 0.
+
+* `l` - Foating point register number.  The default value is 0.
+
+* `i` - Tagged literal integer.  The default value is 0.
+
+* `a` - Tagged atom.  The default value is the empty atom (`am_Empty`).
+
+* `n` - NIL (`[]`, the empty list).
+
+#### Function call on the right side ####
+
+Transformations that are not possible to describe with the rule
+language as described here can be written as a C function in
+`beam_load.c` and called from the right side of a transformation.  The
+left side of the transformation will perform the match and bind
+operands to variables.  The variables can then be passed to a
+generator function on the right side.  For example:
+
+    bif2 Fail=j u$bif:erlang:element/2 Index=s Tuple=xy Dst=d => \
+        gen_element(Jump, Index, Tuple, Dst)
+
+This transformation rule matches a call to the BIF `element/2`.
+The operands will be captured and the function `gen_element()` will
+be called.
+
+`gen_element()` will produce one of two instructions depending
+on `Index`.  If `Index` is an integer in the range from 1 up to
+the maximum tuple size, the instruction `i_fast_element/2` will
+be produced, otherwise the instruction `i_element/4` will be
+produced.  The corresponding specific instructions are:
+
+    i_fast_element xy j? I d
+    i_element xy j? s d
+
+The `i_fast_element/2` instruction is faster because the tuple is
+already an untagged integer.  It also knows that the index is at least
+1, so it does not have to test for that.  The `i_element/4`
+instruction will have to fetch the index from a register, test that it
+is an integer, and untag the integer.
+
+It is outside the scope of this document to describe in detail how
+generator functions are written, but for the curious, here is the
+implementation of `gen_element()`:
+
+    static GenOp*
+    gen_element(LoaderState* stp, GenOpArg Fail,
+       GenOpArg Index, GenOpArg Tuple, GenOpArg Dst)
+    {
+        GenOp* op;
+
+        NEW_GENOP(stp, op);
+        op->arity = 4;
+        op->next = NULL;
+
+        if (Index.type == TAG_i && Index.val > 0 &&
+           Index.val <= ERTS_MAX_TUPLE_SIZE &&
+           (Tuple.type == TAG_x || Tuple.type == TAG_y)) {
+            op->op = genop_i_fast_element_4;
+            op->a[0] = Tuple;
+            op->a[1] = Fail;
+            op->a[2].type = TAG_u;
+            op->a[2].val = Index.val;
+            op->a[3] = Dst;
+        } else {
+            op->op = genop_i_element_4;
+            op->a[0] = Tuple;
+            op->a[1] = Fail;
+            op->a[2] = Index;
+            op->a[3] = Dst;
+        }
+
+        return op;
+    }
+}
+
+### Defining the implementation ###
+
+The actual implementation of instructions are also defined in `.tab`
+files processed by **beam\_makeops**.  For practical reasons,
+instruction definitions are stored in several files, at the time of
+writing in the following files:
+
+    bif_instrs.tab
+    arith_instrs.tab
+    bs_instrs.tab
+    float_instrs.tab
+    instrs.tab
+    map_instrs.tab
+    msg_instrs.tab
+    select_instrs.tab
+    trace_instrs.tab
+
+There is also a file that only contains macro definitions:
+
+    macros.tab
+
+The syntax of each file is similar to C code.  In fact, most of
+the contents *is* C code, interspersed with macro invocations.
+
+To allow Emacs to auto-indent the code, each file starts with the
+following line:
+
+    // -*- c -*-
+
+To avoid messing up the indentation, all comments are written
+as C++ style comments (`//`) instead of `#`.  Note that a comment
+must start at the beginning of a line.
+
+The meat of an instruction definition file are macro definitions.
+We have seen this macro definition before:
+
+    move(Src, Dst) {
+        $Dst = $Src;
+    }
+
+A macro definitions must start at the beginning of the line (no spaces
+allowed), the opening curly bracket must be on the same line, and the
+finishing curly bracket must be at the beginning of a line.  It is
+recommended that the macro body is properly indented.
+
+As a convention, the macro arguments in the head all start with an
+uppercase letter.  In the body, the macro arguments can be expanded
+by preceding them with `$`.
+
+A macro definition whose name and arity matches a family of
+specific instructions is assumed to be the implementation of that
+instruction.
+
+A macro can also be invoked from within another macro.  For example,
+`move_deallocate_return/2` avoids repeating code by invoking
+`$deallocate_return()` as a macro:
+
+    move_deallocate_return(Src, Deallocate) {
+        x(0) = $Src;
+        $deallocate_return($Deallocate);
+    }
+
+Here is the definition of `deallocate_return/1`:
+
+    deallocate_return(Deallocate) {
+        //| -no_next
+        int words_to_pop = $Deallocate;
+        SET_I((BeamInstr *) cp_val(*E));
+        E = ADD_BYTE_OFFSET(E, words_to_pop);
+        CHECK_TERM(x(0));
+        DispatchReturn;
+    }
+
+The expanded code for `move_deallocate_return` will look this:
+
+    OpCase(move_deallocate_return_cQ):
+    {
+      x(0) = I[1];
+      do {
+        int words_to_pop = Qb(BeamExtraData(I[0]));
+        SET_I((BeamInstr *) cp_val(*E));
+        E = ADD_BYTE_OFFSET(E, words_to_pop);
+        CHECK_TERM(x(0));
+        DispatchReturn;
+      } while (0);
+    }
+
+When expanding macros, **beam\_makeops** wraps the expansion in a
+`do`/`while` wrapper unless **beam\_makeops** can clearly see that no
+wrapper is needed.  In this case, the wrapper is needed.
+
+Note that arguments for macros cannot be complex expressions, because
+the arguments are split on `,`.  For example, the following would
+not work because **beam\_makeops** would split the expression into
+two arguments:
+
+    $deallocate_return(get_deallocation(y, $Deallocate));
+
+#### Code generation directives ####
+
+Within macro definitions, `//` comments are in general not treated
+specially.  They will be copied to the file with the generated code
+along with the rest of code in the body.
+
+However, there is an exception. Within a macro definition, a line that
+starts with whitespace followed by `//|` is treated specially.  The
+rest of the line is assumed to contain directives to control code
+generation.
+
+Currently, two code generation directives are recognized:
+
+* `-no_prefetch`
+* `-no_next`
+
+##### The -no_prefetch directive #####
+
+To see what `-no_prefetch` does, let's first look at the default code
+generation.  Here is the code generated for `move_cx`:
+
+    OpCase(move_cx):
+    {
+      BeamInstr next_pf = BeamCodeAddr(I[2]);
+      xb(BeamExtraData(I[0])) = I[1];
+      I += 2;
+      ASSERT(VALID_INSTR(next_pf));
+      GotoPF(next_pf);
+    }
+
+Note that the very first thing done is to fetch the address to the
+next instruction.  The reason is that it usually improves performance.
+
+Just as a demonstration, we can add a `-no_prefetch` directive to
+the `move/2` instruction:
+
+    move(Src, Dst) {
+        //| -no_prefetch
+        $Dst = $Src;
+    }
+
+We can see that the prefetch is no longer done:
+
+    OpCase(move_cx):
+    {
+      xb(BeamExtraData(I[0])) = I[1];
+      I += 2;
+      ASSERT(VALID_INSTR(*I));
+      Goto(*I);
+    }
+
+When would we want to turn off the prefetch in practice?
+
+In instructions that will not always execute the next instruction.
+For example:
+
+    is_atom(Fail, Src) {
+        if (is_not_atom($Src)) {
+            $FAIL($Fail);
+        }
+    }
+
+    // From macros.tab
+    FAIL(Fail) {
+        //| -no_prefetch
+        $SET_I_REL($Fail);
+        Goto(*I);
+    }
+
+`is_atom/2` may either execute the next instruction (if the second
+operand is an atom) or branch to the failure label.
+
+The generated code looks like this:
+
+    OpCase(is_atom_fx):
+    {
+      if (is_not_atom(xb(I[1]))) {
+        ASSERT(VALID_INSTR(*(I + (fb(BeamExtraData(I[0]))) + 0)));
+        I += fb(BeamExtraData(I[0])) + 0;;
+        Goto(*I);;
+      }
+      I += 2;
+      ASSERT(VALID_INSTR(*I));
+      Goto(*I);
+    }
+
+##### The -no_next directive #####
+
+Next we will look at when the `-no_next` directive can be used.  Here
+is the `jump/1` instruction:
+
+    jump(Fail) {
+        $JUMP($Fail);
+    }
+
+    // From macros.tab
+    JUMP(Fail) {
+        //| -no_next
+        $SET_I_REL($Fail);
+        Goto(*I);
+    }
+
+The generated code looks like this:
+
+    OpCase(jump_f):
+    {
+      ASSERT(VALID_INSTR(*(I + (fb(BeamExtraData(I[0]))) + 0)));
+      I += fb(BeamExtraData(I[0])) + 0;;
+      Goto(*I);;
+    }
+
+If we remove the `-no_next` directive, the code would look like this:
+
+    OpCase(jump_f):
+    {
+      BeamInstr next_pf = BeamCodeAddr(I[1]);
+      ASSERT(VALID_INSTR(*(I + (fb(BeamExtraData(I[0]))) + 0)));
+      I += fb(BeamExtraData(I[0])) + 0;;
+      Goto(*I);;
+      I += 1;
+      ASSERT(VALID_INSTR(next_pf));
+      GotoPF(next_pf);
+    }
+
+In the end, the C compiler will probably optimize this code to the
+same native code as the first version, but the first version is certainly
+much easier to read for human readers.
+
+#### Macros in the macros.tab file ####
+
+The file `macros.tab` contains many useful macros.  When implementing
+new instructions it is good practice to look through `macros.tab` to
+see if any of existing macros can be used rather than re-inventing
+the wheel.
+
+We will describe a few of the most useful macros here.
+
+##### The GC_REGEXP definition #####
+
+The following line defines a regular expression that will recognize
+a call to a function that does a garbage collection:
+
+     GC_REGEXP=erts_garbage_collect|erts_gc|GcBifFunction;
+
+The purpose is that **beam\_makeops** can verify that an instruction
+that does a garbage collection and has an `d` operand uses the
+`$REFRESH_GEN_DEST()` macro.
+
+If you need to define a new function that does garbage collection,
+you should give it the prefix `erts_gc_`.  If that is not possible
+you should update the regular expression so that it will match your
+new function.
+
+##### FAIL(Fail) #####
+
+Branch to `$Fail`.  Will suppress prefetch (`-no_prefetch`).  Typical use:
+
+    is_nonempty_list(Fail, Src) {
+        if (is_not_list($Src)) {
+            $FAIL($Fail);
+        }
+    }
+
+##### JUMP(Fail) #####
+
+Branch to `$Fail`.  Suppresses generation of dispatch of the next
+instruction (`-no_next`).  Typical use:
+
+    jump(Fail) {
+        $JUMP($Fail);
+    }
+
+##### GC_TEST(NeedStack, NeedHeap, Live) #####
+
+`$GC_TEST(NeedStack, NeedHeap, Live)` tests that given amount of
+stack space and heap space is available.  If not it will do a
+garbage collection.  Typical use:
+
+    test_heap(Nh, Live) {
+        $GC_TEST(0, $Nh, $Live);
+    }
+
+##### AH(NeedStack, NeedHeap, Live) #####
+
+`AH(NeedStack, NeedHeap, Live)` allocates a stack frame and
+optionally additional heap space.
+
+#### Pre-defined macros and variables ####
+
+**beam\_makeops** defines several built-in macros and pre-bound variables.
+
+##### The NEXT_INSTRUCTION pre-bound variable #####
+
+The NEXT_INSTRUCTION is a pre-bound variable that is available in
+all instructions.  It expands to the address of the next instruction.
+
+Here is an example:
+
+    i_call(CallDest) {
+        SET_CP(c_p, $NEXT_INSTRUCTION);
+        $DISPATCH_REL($CallDest);
+    }
+
+When calling a function, the return address is first stored in `c_p->cp`
+(using the `SET_CP()` macro defined in `beam_emu.c`), and then control is
+transferred to the callee.  Here is the generated code:
+
+    OpCase(i_call_f):
+    {
+      SET_CP(c_p, I+1);
+      ASSERT(VALID_INSTR(*(I + (fb(BeamExtraData(I[0]))) + 0)));
+      I += fb(BeamExtraData(I[0])) + 0;;
+      DTRACE_LOCAL_CALL(c_p, erts_code_to_codemfa(I));
+      Dispatch();;
+    }
+
+We can see that that `$NEXT_INSTRUCTION` has been expanded to `I+1`.
+That makes sense since the size of the `i_call_f/1` instruction is
+one word.
+
+##### The IP_ADJUSTMENT pre-bound variable #####
+
+`$IP_ADJUSTMENT` is usually 0.  In a few combined instructions
+(described below) it can be non-zero.  It is used like this
+in `macros.tab`:
+
+    SET_I_REL(Offset) {
+        ASSERT(VALID_INSTR(*(I + ($Offset) + $IP_ADJUSTMENT)));
+        I += $Offset + $IP_ADJUSTMENT;
+    }
+
+Avoid using `IP_ADJUSTMENT` directly.  Use `SET_I_REL()` or
+one of the macros that invoke such as `FAIL()` or `JUMP()`
+defined in `macros.tab`.
+
+#### Pre-defined macro functions ####
+
+##### The IF() macro #####
+
+`$IF(Expr, IfTrue, IfFalse)` evaluates `Expr`, which must be a valid
+Perl expression (which for simple numeric expressions have the same
+syntax as C).  If `Expr` evaluates to 0, the entire `IF()` expression will be
+replaced with `IfFalse`, otherwise it will be replaced with `IfTrue`.
+
+See the description of `OPERAND_POSITION()` for an example.
+
+##### The OPERAND\_POSITION() macro #####
+
+`$OPERAND_POSITION(Expr)` returns the position for `Expr`, if
+`Expr` is an operand that is not packed.  The first operand is
+at position 1.
+
+Returns 0 otherwise.
+
+This macro could be used like this in order to share code:
+
+    FAIL(Fail) {
+        //| -no_prefetch
+        $IF($OPERAND_POSITION($Fail) == 1 && $IP_ADJUSTMENT == 0,
+            goto common_jump,
+            $DO_JUMP($Fail));
+    }
+
+    DO_JUMP(Fail) {
+        $SET_I_REL($Fail);
+        Goto(*I));
+    }
+
+    // In beam_emu.c:
+    common_jump:
+       I += I[1];
+       Goto(*I));
+
+
+#### The $REFRESH\_GEN\_DEST() macro ####
+
+When a specific instruction has a `d` operand, early during execution
+of the instruction, a pointer will be initialized to point to the X or
+Y register in question.
+
+If there is a garbage collection before the result is stored,
+the stack will move and if the `d` operand refered to a Y
+register, the pointer will no longer be valid.  (Y registers are
+stored on the stack.)
+
+In those circumstances, `$REFRESH_GEN_DEST()` must be invoked
+to set up the pointer again.  **beam\_makeops** will notice
+if there is a call to a function that does a garbage collection and
+`$REFRESH_GEN_DEST()` is not called.
+
+Here is a complete example.  The `new_map` instruction is defined
+like this:
+
+    new_map d t I
+
+It is implemented like this:
+
+    new_map(Dst, Live, N) {
+        Eterm res;
+
+        HEAVY_SWAPOUT;
+        res = erts_gc_new_map(c_p, reg, $Live, $N, $NEXT_INSTRUCTION);
+        HEAVY_SWAPIN;
+        $REFRESH_GEN_DEST();
+        $Dst = res;
+        $NEXT($NEXT_INSTRUCTION+$N);
+    }
+
+If we have forgotten the `$REFRESH_GEN_DEST()` there would be a message
+similar to this:
+
+    pointer to destination register is invalid after GC -- use $REFRESH_GEN_DEST()
+    ... from the body of new_map at beam/map_instrs.tab(30)
+
+#### Combined instructions ####
+
+**Problem**: For frequently executed instructions we want to use
+"fast" operands types such as `x` and `y`, as opposed to `s` or `S`.
+To avoid an explosion in code size, we want to share most of the
+implementation between the instructions.  Here are the specific
+instructions for `i_increment/5`:
+
+    i_increment r W t d
+    i_increment x W t d
+    i_increment y W t d
+
+The `i_increment` instruction is implemented like this:
+
+    i_increment(Source, IncrementVal, Live, Dst) {
+        Eterm increment_reg_source = $Source;
+        Eterm increment_val = $IncrementVal;
+        Uint live;
+        Eterm result;
+
+        if (ERTS_LIKELY(is_small(increment_reg_val))) {
+            Sint i = signed_val(increment_reg_val) + increment_val;
+            if (ERTS_LIKELY(IS_SSMALL(i))) {
+                $Dst = make_small(i);
+                $NEXT0();
+            }
+        }
+        live = $Live;
+        HEAVY_SWAPOUT;
+        reg[live] = increment_reg_val;
+        reg[live+1] = make_small(increment_val);
+        result = erts_gc_mixed_plus(c_p, reg, live);
+        HEAVY_SWAPIN;
+        ERTS_HOLE_CHECK(c_p);
+        if (ERTS_LIKELY(is_value(result))) {
+            $REFRESH_GEN_DEST();
+            $Dst = result;
+            $NEXT0();
+        }
+        ASSERT(c_p->freason != BADMATCH || is_value(c_p->fvalue));
+        goto find_func_info;
+    }
+
+There will be three almost identical copies of the code.  Given the
+size of the code, that could be too high cost to pay.
+
+To avoid the three copies of the code, we could use only one specific
+instruction:
+
+    i_increment S W t d
+
+(The same implementation as above will work.)
+
+That reduces the code size, but is slower because `S` means that
+there will be extra code to test whether the operand refers to an X
+register or a Y register.
+
+**Solution**: We can use "combined instructions".  Combined
+instructions are combined from instruction fragments.  The
+bulk of the code can be shared.
+
+Here we will show how `i_increment` can be implemented as a combined
+instruction.  We will show each individual fragment first, and then
+show how to connect them together.  First we will need a variable that
+we can store the value fetched from the register in:
+
+    increment.head() {
+        Eterm increment_reg_val;
+    }
+
+The name `increment` is the name of the group that the fragment
+belongs to.  Note that it does not need to have the same
+name as the instruction.  The group name is followed by `.` and
+the name of the fragment.  The name `head` is pre-defined.
+The code in it will be placed at the beginning of a block, so
+that all fragments in the group can access it.
+
+Next we define the fragment that will pick up the value from the
+register from the first operand:
+
+    increment.fetch(Src) {
+        increment_reg_val = $Src;
+    }
+
+We call this fragment `fetch`.  This fragment will be duplicated three
+times, one for each value of the first operand (`r`, `x`, and `y`).
+
+Next we define the main part of the code that do the actual incrementing.
+
+    increment.execute(IncrementVal, Live, Dst) {
+        Eterm increment_val = $IncrementVal;
+        Uint live;
+        Eterm result;
+
+        if (ERTS_LIKELY(is_small(increment_reg_val))) {
+            Sint i = signed_val(increment_reg_val) + increment_val;
+            if (ERTS_LIKELY(IS_SSMALL(i))) {
+                $Dst = make_small(i);
+                $NEXT0();
+            }
+        }
+        live = $Live;
+        HEAVY_SWAPOUT;
+        reg[live] = increment_reg_val;
+        reg[live+1] = make_small(increment_val);
+        result = erts_gc_mixed_plus(c_p, reg, live);
+        HEAVY_SWAPIN;
+        ERTS_HOLE_CHECK(c_p);
+        if (ERTS_LIKELY(is_value(result))) {
+            $REFRESH_GEN_DEST();
+            $Dst = result;
+            $NEXT0();
+        }
+        ASSERT(c_p->freason != BADMATCH || is_value(c_p->fvalue));
+        goto find_func_info;
+    }
+
+We call this fragment `execute`.  It will handle the three remaining
+operands (`W t d`).  There will only be one copy of this fragment.
+
+Now that we have defined the fragments, we need to inform
+**beam\_makeops** how they should be connected:
+
+    i_increment := increment.fetch.execute;
+
+To the left of the `:=` is the name of the specific instruction that
+should be implemented by the fragments, in this case `i_increment`.
+To the right of `:=` is the name of the group with the fragments,
+followed by a `.`.  Then the name of the fragments in the group are
+listed in the order they should be executed.  Note that the `head`
+fragment is not listed.
+
+The line ends in `;` (to avoid messing up the indentation in Emacs).
+
+(Note that in practice the `:=` line is usually placed before the
+fragments.)
+
+The generated code looks like this:
+
+    {
+      Eterm increment_reg_val;
+      OpCase(i_increment_rWtd):
+      {
+        increment_reg_val = r(0);
+      }
+      goto increment__execute;
+
+      OpCase(i_increment_xWtd):
+      {
+        increment_reg_val = xb(BeamExtraData(I[0]));
+      }
+      goto increment__execute;
+
+      OpCase(i_increment_yWtd):
+      {
+        increment_reg_val = yb(BeamExtraData(I[0]));
+      }
+      goto increment__execute;
+
+      increment__execute:
+      {
+        // Here follows the code from increment.execute()
+        .
+        .
+        .
+    }
+
+##### Some notes about combined instructions #####
+
+The operands that are different must be at
+the beginning of the instruction.  All operands in the last
+fragment must have the same operands in all variants of
+the specific instruction.
+
+As an example, the following specific instructions cannot be
+implemented as a combined instruction:
+
+    i_times j? t x x d
+    i_times j? t x y d
+    i_times j? t s s d
+
+We would have to change the order of the operands so that the
+two operands that are different are placed first:
+
+    i_times x x j? t d
+    i_times x y j? t d
+    i_times s s j? t d
+
+We can then define:
+
+    i_times := times.fetch.execute;
+
+    times.head {
+        Eterm op1, op2;
+    }
+
+    times.fetch(Src1, Src2) {
+        op1 = $Src1;
+        op2 = $Src2;
+    }
+
+    times.execute(Fail, Live, Dst) {
+        // Multiply op1 and op2.
+        .
+        .
+        .
+    }
+
+Several instructions can share a group.  As an example, the following
+instructions have different names, but in the end they all create a
+binary.  The last two operands are common for all of them:
+
+    i_bs_init_fail       xy j? t? x
+    i_bs_init_fail_heap s I j? t? x
+    i_bs_init                W t? x
+    i_bs_init_heap         W I t? x
+
+The instructions are defined like this (formatted with extra
+spaces for clarity):
+
+    i_bs_init_fail_heap := bs_init . fail_heap . verify . execute;
+    i_bs_init_fail      := bs_init . fail      . verify . execute;
+    i_bs_init           := bs_init .           .  plain . execute;
+    i_bs_init_heap      := bs_init .               heap . execute;
+
+Note that the first two instruction have three fragments, while the
+other two only have two fragments.  Here are the fragments:
+
+    bs_init_bits.head() {
+        Eterm num_bits_term;
+        Uint num_bits;
+        Uint alloc;
+    }
+
+    bs_init_bits.plain(NumBits) {
+        num_bits = $NumBits;
+        alloc = 0;
+    }
+
+    bs_init_bits.heap(NumBits, Alloc) {
+        num_bits = $NumBits;
+        alloc = $Alloc;
+    }
+
+    bs_init_bits.fail(NumBitsTerm) {
+        num_bits_term = $NumBitsTerm;
+        alloc = 0;
+    }
+
+    bs_init_bits.fail_heap(NumBitsTerm, Alloc) {
+        num_bits_term = $NumBitsTerm;
+        alloc = $Alloc;
+    }
+
+    bs_init_bits.verify(Fail) {
+        // Verify the num_bits_term, fail using $FAIL
+        // if there is a problem.
+	.
+	.
+	.
+    }
+
+    bs_init_bits.execute(Live, Dst) {
+       // Long complicated code to a create a binary.
+       .
+       .
+       .
+    }
+
+The full definitions of those instructions can be found in `bs_instrs.tab`.
+The generated code can be found in `beam_warm.h`.
diff --git a/erts/emulator/internal_doc/figures/.gitignore b/erts/emulator/internal_doc/figures/.gitignore
new file mode 100644
index 0000000000..c2813ac866
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/.gitignore
@@ -0,0 +1 @@
+*.eps
\ No newline at end of file
diff --git a/erts/emulator/internal_doc/figures/Makefile b/erts/emulator/internal_doc/figures/Makefile
new file mode 100644
index 0000000000..111cb393fb
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/Makefile
@@ -0,0 +1,20 @@
+# In order to update the figures you have to have both dia
+# and imagemagick installed.
+
+DIAGRAMS=$(wildcard *.dia)
+EPS_DIAGRAMS=$(patsubst %.dia,%.eps,$(DIAGRAMS))
+PNG_DIAGRAMS=$(patsubst %.dia,%.png,$(DIAGRAMS))
+
+diagrams: $(EPS_DIAGRAMS)
+
+png: $(PNG_DIAGRAMS)
+
+update_png: png
+	git add $(PNG_DIAGRAMS)
+	git commit -m "Update internal docs figures"
+
+%.eps: %.dia
+	dia --export=$@ $<
+
+%.png: %.eps
+	convert $< -resize 65% $@
diff --git a/erts/emulator/internal_doc/figures/gc-heap-scan1.dia b/erts/emulator/internal_doc/figures/gc-heap-scan1.dia
new file mode 100644
index 0000000000..b8a32dc092
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-heap-scan1.dia
diff --git a/erts/emulator/internal_doc/figures/gc-heap-scan1.png b/erts/emulator/internal_doc/figures/gc-heap-scan1.png
new file mode 100644
index 0000000000..9724fc8698
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-heap-scan1.png
diff --git a/erts/emulator/internal_doc/figures/gc-heap-stop.dia b/erts/emulator/internal_doc/figures/gc-heap-stop.dia
new file mode 100644
index 0000000000..af219958c6
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-heap-stop.dia
diff --git a/erts/emulator/internal_doc/figures/gc-heap-stop.png b/erts/emulator/internal_doc/figures/gc-heap-stop.png
new file mode 100644
index 0000000000..ec79790d36
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-heap-stop.png
diff --git a/erts/emulator/internal_doc/figures/gc-rootset-scan.dia b/erts/emulator/internal_doc/figures/gc-rootset-scan.dia
new file mode 100644
index 0000000000..d6147740e5
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-rootset-scan.dia
diff --git a/erts/emulator/internal_doc/figures/gc-rootset-scan.png b/erts/emulator/internal_doc/figures/gc-rootset-scan.png
new file mode 100644
index 0000000000..06509f83c3
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-rootset-scan.png
diff --git a/erts/emulator/internal_doc/figures/gc-start.dia b/erts/emulator/internal_doc/figures/gc-start.dia
new file mode 100644
index 0000000000..41832d29b0
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-start.dia
diff --git a/erts/emulator/internal_doc/figures/gc-start.png b/erts/emulator/internal_doc/figures/gc-start.png
new file mode 100644
index 0000000000..6c29e9adb0
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-start.png
diff --git a/erts/emulator/internal_doc/figures/gc-watermark-2.dia b/erts/emulator/internal_doc/figures/gc-watermark-2.dia
new file mode 100644
index 0000000000..2ea3be3fb2
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-watermark-2.dia
diff --git a/erts/emulator/internal_doc/figures/gc-watermark-2.png b/erts/emulator/internal_doc/figures/gc-watermark-2.png
new file mode 100644
index 0000000000..bca110282d
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-watermark-2.png
diff --git a/erts/emulator/internal_doc/figures/gc-watermark.dia b/erts/emulator/internal_doc/figures/gc-watermark.dia
new file mode 100644
index 0000000000..a5de7565dc
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-watermark.dia
diff --git a/erts/emulator/internal_doc/figures/gc-watermark.png b/erts/emulator/internal_doc/figures/gc-watermark.png
new file mode 100644
index 0000000000..b835c7694e
--- /dev/null
+++ b/erts/emulator/internal_doc/figures/gc-watermark.png
diff --git a/erts/emulator/nifs/common/prim_buffer_nif.c b/erts/emulator/nifs/common/prim_buffer_nif.c
new file mode 100644
index 0000000000..a8ef5fc355
--- /dev/null
+++ b/erts/emulator/nifs/common/prim_buffer_nif.c
@@ -0,0 +1,512 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson 2017. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#define STATIC_ERLANG_NIF 1
+
+#include "erl_nif.h"
+#include "config.h"
+#include "sys.h"
+
+#ifdef VALGRIND
+#  include <valgrind/memcheck.h>
+#endif
+
+#define ACCUMULATOR_SIZE (2 << 10)
+
+#define FIND_NIF_RESCHEDULE_SIZE (1 << 20)
+
+/* NIF interface declarations */
+static int load(ErlNifEnv *env, void** priv_data, ERL_NIF_TERM load_info);
+static int upgrade(ErlNifEnv *env, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info);
+static void unload(ErlNifEnv *env, void* priv_data);
+
+static ErlNifResourceType *rtype_buffer;
+
+static ERL_NIF_TERM am_ok;
+static ERL_NIF_TERM am_error;
+
+static ERL_NIF_TERM am_lock_order_violation;
+
+static ERL_NIF_TERM am_acquired;
+static ERL_NIF_TERM am_busy;
+
+static ERL_NIF_TERM am_continue;
+
+static ERL_NIF_TERM am_out_of_memory;
+static ERL_NIF_TERM am_not_found;
+
+typedef struct {
+#ifdef DEBUG
+    erts_atomic32_t concurrent_users;
+#endif
+
+    ErlNifBinary accumulator;
+    size_t accumulated_bytes;
+    int accumulator_present;
+
+    ErlNifIOQueue *queue;
+
+    erts_atomic32_t external_lock;
+} buffer_data_t;
+
+static ERL_NIF_TERM new_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM peek_head_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM skip_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM size_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM write_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM copying_read_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM find_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM trylock_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM unlock_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ErlNifFunc nif_funcs[] = {
+    {"new", 0, new_nif},
+    {"size", 1, size_nif},
+    {"peek_head", 1, peek_head_nif},
+    {"copying_read", 2, copying_read_nif},
+    {"write", 2, write_nif},
+    {"skip", 2, skip_nif},
+    {"find_byte_index", 2, find_nif},
+    {"try_lock", 1, trylock_nif},
+    {"unlock", 1, unlock_nif},
+};
+
+ERL_NIF_INIT(prim_buffer, nif_funcs, load, NULL, upgrade, unload)
+
+static void gc_buffer(ErlNifEnv *env, void* data);
+
+static int load(ErlNifEnv *env, void** priv_data, ERL_NIF_TERM load_info)
+{
+    am_ok = enif_make_atom(env, "ok");
+    am_error = enif_make_atom(env, "error");
+
+    am_lock_order_violation = enif_make_atom(env, "lock_order_violation");
+    am_acquired = enif_make_atom(env, "acquired");
+    am_busy = enif_make_atom(env, "busy");
+
+    am_continue = enif_make_atom(env, "continue");
+
+    am_out_of_memory = enif_make_atom(env, "out_of_memory");
+    am_not_found = enif_make_atom(env, "not_found");
+
+    rtype_buffer = enif_open_resource_type(env, NULL, "gc_buffer", gc_buffer,
+        ERL_NIF_RT_CREATE, NULL);
+
+    *priv_data = NULL;
+
+    return 0;
+}
+
+static void unload(ErlNifEnv *env, void* priv_data)
+{
+
+}
+
+static int upgrade(ErlNifEnv *env, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info)
+{
+    if(*old_priv_data != NULL) {
+        return -1; /* Don't know how to do that */
+    }
+
+    if(*priv_data != NULL) {
+        return -1; /* Don't know how to do that */
+    }
+
+    if(load(env, priv_data, load_info)) {
+        return -1;
+    }
+
+    return 0;
+}
+
+static void gc_buffer(ErlNifEnv *env, void* data) {
+    buffer_data_t *buffer = (buffer_data_t*)data;
+
+    if(buffer->accumulator_present) {
+        enif_release_binary(&buffer->accumulator);
+    }
+
+    enif_ioq_destroy(buffer->queue);
+}
+
+static int get_buffer_data(ErlNifEnv *env, ERL_NIF_TERM opaque, buffer_data_t **buffer) {
+    return enif_get_resource(env, opaque, rtype_buffer, (void **)buffer);
+}
+
+/* Copies a number of bytes from the head of the iovec, skipping "vec_skip"
+ * vector elements followed by "byte_skip" bytes on the target vector. */
+static void copy_from_iovec(SysIOVec *iovec, int vec_len, int vec_skip,
+        size_t byte_skip, size_t size, char *data) {
+
+    size_t bytes_copied, skip_offset;
+    int vec_index;
+
+    skip_offset = byte_skip;
+    vec_index = vec_skip;
+    bytes_copied = 0;
+
+    while(bytes_copied < size) {
+        size_t block_size, copy_size;
+        char *block_start;
+
+        ASSERT(vec_index < vec_len);
+
+        block_start = (char*)iovec[vec_index].iov_base;
+        block_size = iovec[vec_index].iov_len;
+
+        copy_size = MIN(size - bytes_copied, block_size - skip_offset);
+        sys_memcpy(&data[bytes_copied], &block_start[skip_offset], copy_size);
+
+        bytes_copied += copy_size;
+        skip_offset = 0;
+
+        vec_index++;
+    }
+}
+
+/* Convenience function for copy_from_iovec over queues. */
+static void copy_from_queue(ErlNifIOQueue *queue, int queue_skip,
+    size_t byte_skip, size_t size, char *data) {
+
+    SysIOVec *queued_data;
+    int queue_length;
+
+    queued_data = enif_ioq_peek(queue, &queue_length);
+    ASSERT(queue_skip < queue_length);
+
+    copy_from_iovec(queued_data, queue_length, queue_skip, byte_skip, size, data);
+}
+
+static int enqueue_write_accumulator(buffer_data_t *buffer) {
+    ASSERT(!buffer->accumulator_present ^ (buffer->accumulated_bytes > 0));
+
+    if(buffer->accumulator_present && buffer->accumulated_bytes > 0) {
+        if(!enif_realloc_binary(&buffer->accumulator, buffer->accumulated_bytes)) {
+            return 0;
+        } else if(!enif_ioq_enq_binary(buffer->queue, &buffer->accumulator, 0)) {
+            return 0;
+        }
+
+        /* The queue owns the accumulator now. */
+        buffer->accumulator_present = 0;
+        buffer->accumulated_bytes = 0;
+    }
+
+    return 1;
+}
+
+static int combine_small_writes(buffer_data_t *buffer, ErlNifIOVec *iovec) {
+    ASSERT(!buffer->accumulator_present ^ (buffer->accumulated_bytes > 0));
+
+    if(buffer->accumulated_bytes + iovec->size >= ACCUMULATOR_SIZE) {
+        if(iovec->size >= (ACCUMULATOR_SIZE / 2)) {
+            return 0;
+        }
+
+        if(!enqueue_write_accumulator(buffer)) {
+            return 0;
+        }
+    }
+
+    if(!buffer->accumulator_present) {
+        if(!enif_alloc_binary(ACCUMULATOR_SIZE, &buffer->accumulator)) {
+            return 0;
+        }
+
+        buffer->accumulator_present = 1;
+    }
+
+    copy_from_iovec(iovec->iov, iovec->iovcnt, 0, 0, iovec->size,
+            (char*)&buffer->accumulator.data[buffer->accumulated_bytes]);
+    buffer->accumulated_bytes += iovec->size;
+
+    return 1;
+}
+
+/* *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** */
+
+static ERL_NIF_TERM new_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    buffer_data_t *buffer;
+    ERL_NIF_TERM result;
+
+    buffer = (buffer_data_t*)enif_alloc_resource(rtype_buffer, sizeof(buffer_data_t));
+    buffer->queue = enif_ioq_create(ERL_NIF_IOQ_NORMAL);
+
+    if(buffer->queue != NULL) {
+#ifdef DEBUG
+        erts_atomic32_init_nob(&buffer->concurrent_users, 0);
+#endif
+        erts_atomic32_init_nob(&buffer->external_lock, 0);
+
+        buffer->accumulator_present = 0;
+        buffer->accumulated_bytes = 0;
+
+        result = enif_make_resource(env, buffer);
+    } else {
+        result = enif_raise_exception(env, am_out_of_memory);
+    }
+
+    enif_release_resource(buffer);
+
+    return result;
+}
+
+static ERL_NIF_TERM size_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    buffer_data_t *buffer;
+
+    size_t total_size;
+
+    if(argc != 1 || !get_buffer_data(env, argv[0], &buffer)) {
+        return enif_make_badarg(env);
+    }
+
+    ASSERT(erts_atomic32_inc_read_acqb(&buffer->concurrent_users) == 1);
+
+    total_size = enif_ioq_size(buffer->queue);
+
+    if(buffer->accumulator_present) {
+        total_size += buffer->accumulated_bytes;
+    } else {
+        ASSERT(buffer->accumulated_bytes == 0);
+    }
+
+    ASSERT(erts_atomic32_dec_read_relb(&buffer->concurrent_users) == 0);
+
+    return enif_make_uint64(env, total_size);
+}
+
+static ERL_NIF_TERM copying_read_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    buffer_data_t *buffer;
+
+    ERL_NIF_TERM result;
+    unsigned char *data;
+    Uint64 block_size;
+
+    if(argc != 2 || !get_buffer_data(env, argv[0], &buffer)
+                 || !enif_get_uint64(env, argv[1], &block_size)) {
+        return enif_make_badarg(env);
+    }
+
+    ASSERT(erts_atomic32_inc_read_acqb(&buffer->concurrent_users) == 1);
+
+    if(!enqueue_write_accumulator(buffer)) {
+        return enif_raise_exception(env, am_out_of_memory);
+    }
+
+    if(enif_ioq_size(buffer->queue) < block_size) {
+        return enif_make_badarg(env);
+    }
+
+    data = enif_make_new_binary(env, block_size, &result);
+
+    if(block_size > 0) {
+        copy_from_queue(buffer->queue, 0, 0, block_size, (char*)data);
+        enif_ioq_deq(buffer->queue, block_size, NULL);
+    }
+
+    ASSERT(erts_atomic32_dec_read_relb(&buffer->concurrent_users) == 0);
+
+    return result;
+}
+
+static ERL_NIF_TERM write_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    buffer_data_t *buffer;
+
+    ErlNifIOVec vec, *iovec = &vec;
+    ERL_NIF_TERM tail;
+
+    if(argc != 2 || !get_buffer_data(env, argv[0], &buffer)
+                 || !enif_inspect_iovec(env, 64, argv[1], &tail, &iovec)) {
+        return enif_make_badarg(env);
+    }
+
+    ASSERT(erts_atomic32_inc_read_acqb(&buffer->concurrent_users) == 1);
+
+    if(!combine_small_writes(buffer, iovec)) {
+        if(!enqueue_write_accumulator(buffer) || !enif_ioq_enqv(buffer->queue, iovec, 0)) {
+            return enif_raise_exception(env, am_out_of_memory);
+        }
+    }
+
+    ASSERT(erts_atomic32_dec_read_relb(&buffer->concurrent_users) == 0);
+
+    if(!enif_is_empty_list(env, tail)) {
+        const ERL_NIF_TERM new_argv[2] = {argv[0], tail};
+
+        return enif_schedule_nif(env, "write", 0, &write_nif, argc, new_argv);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM peek_head_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    buffer_data_t *buffer;
+
+    ERL_NIF_TERM result;
+
+    if(argc != 1 || !get_buffer_data(env, argv[0], &buffer)) {
+        return enif_make_badarg(env);
+    }
+
+    ASSERT(erts_atomic32_inc_read_acqb(&buffer->concurrent_users) == 1);
+
+    if(!enqueue_write_accumulator(buffer)) {
+        return enif_raise_exception(env, am_out_of_memory);
+    }
+
+    if(!enif_ioq_peek_head(env, buffer->queue, NULL, &result)) {
+        return enif_make_badarg(env);
+    }
+
+    ASSERT(erts_atomic32_dec_read_relb(&buffer->concurrent_users) == 0);
+
+    return result;
+}
+
+static ERL_NIF_TERM skip_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    buffer_data_t *buffer;
+
+    Uint64 block_size;
+
+    if(argc != 2 || !get_buffer_data(env, argv[0], &buffer)
+                 || !enif_get_uint64(env, argv[1], &block_size)) {
+        return enif_make_badarg(env);
+    }
+
+    ASSERT(erts_atomic32_inc_read_acqb(&buffer->concurrent_users) == 1);
+
+    if(!enqueue_write_accumulator(buffer)) {
+        return enif_raise_exception(env, am_out_of_memory);
+    } else if(enif_ioq_size(buffer->queue) < block_size) {
+        return enif_make_badarg(env);
+    }
+
+    enif_ioq_deq(buffer->queue, block_size, NULL);
+
+    ASSERT(erts_atomic32_dec_read_relb(&buffer->concurrent_users) == 0);
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM find_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    buffer_data_t *buffer;
+
+    int queue_length, queue_index;
+    SysIOVec *queued_data;
+    size_t queue_size;
+
+    size_t search_offset;
+    int needle;
+
+    if(argc != 2 || !get_buffer_data(env, argv[0], &buffer)
+                 || !enif_get_int(env, argv[1], &needle)) {
+        return enif_make_badarg(env);
+    }
+
+    ASSERT(erts_atomic32_inc_read_acqb(&buffer->concurrent_users) == 1);
+
+    if(!enqueue_write_accumulator(buffer)) {
+        return enif_raise_exception(env, am_out_of_memory);
+    } else if(needle < 0 || needle > 255) {
+        return enif_make_badarg(env);
+    }
+
+    queued_data = enif_ioq_peek(buffer->queue, &queue_length);
+    queue_size = enif_ioq_size(buffer->queue);
+    queue_index = 0;
+
+    search_offset = 0;
+
+    if(queue_size > (FIND_NIF_RESCHEDULE_SIZE / 100)) {
+        if(enif_thread_type() == ERL_NIF_THR_NORMAL_SCHEDULER) {
+            int timeslice_percent;
+
+            if(queue_size >= FIND_NIF_RESCHEDULE_SIZE) {
+                ASSERT(erts_atomic32_dec_read_relb(&buffer->concurrent_users) == 0);
+
+                return enif_schedule_nif(env, "find",
+                    ERL_NIF_DIRTY_JOB_CPU_BOUND, &find_nif, argc, argv);
+            }
+
+            timeslice_percent = (queue_size * 100) / FIND_NIF_RESCHEDULE_SIZE;
+            enif_consume_timeslice(env, timeslice_percent);
+        }
+    }
+
+    while(queue_index < queue_length) {
+        char *needle_address;
+        char *block_start;
+        size_t block_size;
+
+        block_start = queued_data[queue_index].iov_base;
+        block_size = queued_data[queue_index].iov_len;
+
+        needle_address = memchr(block_start, needle, block_size);
+
+        if(needle_address != NULL) {
+            size_t result = search_offset + (needle_address - block_start);
+
+            ASSERT(erts_atomic32_dec_read_relb(&buffer->concurrent_users) == 0);
+
+            return enif_make_tuple2(env, am_ok, enif_make_uint64(env, result));
+        }
+
+        search_offset += block_size;
+        queue_index++;
+    }
+
+    ASSERT(erts_atomic32_dec_read_relb(&buffer->concurrent_users) == 0);
+
+    return am_not_found;
+}
+
+/* */
+
+static ERL_NIF_TERM trylock_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    buffer_data_t *buffer;
+
+    if(argc != 1 || !get_buffer_data(env, argv[0], &buffer)) {
+        return enif_make_badarg(env);
+    }
+
+    if(erts_atomic32_cmpxchg_acqb(&buffer->external_lock, 1, 0) == 0) {
+        return am_acquired;
+    }
+
+    return am_busy;
+}
+
+static ERL_NIF_TERM unlock_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    buffer_data_t *buffer;
+
+    if(argc != 1 || !get_buffer_data(env, argv[0], &buffer)) {
+        return enif_make_badarg(env);
+    }
+
+    if(erts_atomic32_cmpxchg_relb(&buffer->external_lock, 0, 1) == 0) {
+        return enif_raise_exception(env, am_lock_order_violation);
+    }
+
+    return am_ok;
+}
diff --git a/erts/emulator/nifs/common/prim_file_nif.c b/erts/emulator/nifs/common/prim_file_nif.c
new file mode 100644
index 0000000000..6874f41d75
--- /dev/null
+++ b/erts/emulator/nifs/common/prim_file_nif.c
@@ -0,0 +1,1237 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson 2017. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#define STATIC_ERLANG_NIF 1
+
+#include "erl_nif.h"
+#include "config.h"
+#include "sys.h"
+
+#ifdef VALGRIND
+#  include <valgrind/memcheck.h>
+#endif
+
+#include "erl_driver.h"
+#include "prim_file_nif.h"
+
+/* NIF interface declarations */
+static int load(ErlNifEnv *env, void** priv_data, ERL_NIF_TERM load_info);
+static int upgrade(ErlNifEnv *env, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info);
+static void unload(ErlNifEnv *env, void* priv_data);
+
+static ErlNifResourceType *efile_resource_type;
+
+static ERL_NIF_TERM am_ok;
+static ERL_NIF_TERM am_error;
+static ERL_NIF_TERM am_continue;
+
+static ERL_NIF_TERM am_file_info;
+
+/* File modes */
+static ERL_NIF_TERM am_read;
+static ERL_NIF_TERM am_write;
+static ERL_NIF_TERM am_exclusive;
+static ERL_NIF_TERM am_append;
+static ERL_NIF_TERM am_sync;
+static ERL_NIF_TERM am_skip_type_check;
+
+/* enum efile_access_t; read and write are defined above.*/
+static ERL_NIF_TERM am_read_write;
+static ERL_NIF_TERM am_none;
+
+/* enum efile_advise_t */
+static ERL_NIF_TERM am_normal;
+static ERL_NIF_TERM am_random;
+static ERL_NIF_TERM am_sequential;
+static ERL_NIF_TERM am_will_need;
+static ERL_NIF_TERM am_dont_need;
+static ERL_NIF_TERM am_no_reuse;
+
+/* enum efile_filetype_t */
+static ERL_NIF_TERM am_device;
+static ERL_NIF_TERM am_directory;
+static ERL_NIF_TERM am_regular;
+static ERL_NIF_TERM am_symlink;
+static ERL_NIF_TERM am_other;
+
+/* enum efile_seek_t, 'eof' marker. */
+static ERL_NIF_TERM am_bof;
+static ERL_NIF_TERM am_cur;
+static ERL_NIF_TERM am_eof;
+
+static ERL_NIF_TERM read_info_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM set_permissions_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM set_owner_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM set_time_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM read_link_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM list_dir_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM make_hard_link_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM make_soft_link_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM rename_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM make_dir_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM del_file_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM del_dir_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM get_device_cwd_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM get_cwd_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM set_cwd_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM read_file_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM get_handle_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM altname_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM open_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+/* All file handle operations are passed through a wrapper that handles state
+ * transitions, marking it as busy during the course of the operation, and
+ * closing on completion if the owner died in the middle of an operation.
+ *
+ * This is pretty ugly but required as there's no way to tell when it's safe to
+ * asynchronously close a file; the event could have fired just before landing
+ * in a system call which will fail with EBADF at best or alias a newly opened
+ * fd at worst.
+ *
+ * The old driver got away with enqueueing the close operation on the same
+ * async queue as all of its other operations, but since dirty schedulers use a
+ * single global queue there's no natural way to schedule an asynchronous close
+ * "behind" other operations.
+ *
+ * The states may transition as follows:
+ *
+ * IDLE ->
+ *      BUSY (file_handle_wrapper) |
+ *      CLOSED (owner_death_callback)
+ *
+ * BUSY ->
+ *      IDLE (file_handle_wrapper)
+ *      CLOSED (close_nif_impl)
+ *      CLOSE_PENDING (owner_death_callback)
+ *
+ * CLOSE_PENDING ->
+ *      CLOSED (file_handle_wrapper)
+ */
+
+typedef ERL_NIF_TERM (*file_op_impl_t)(efile_data_t *d, ErlNifEnv *env,
+    int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM file_handle_wrapper(file_op_impl_t operation, ErlNifEnv *env,
+    int argc, const ERL_NIF_TERM argv[]);
+
+#define WRAP_FILE_HANDLE_EXPORT(name) \
+    static ERL_NIF_TERM name ## _impl (efile_data_t *d, ErlNifEnv *env, \
+        int argc, const ERL_NIF_TERM argv[]);\
+    static ERL_NIF_TERM name(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) { \
+        return file_handle_wrapper( name ## _impl , env, argc, argv); \
+    }
+
+WRAP_FILE_HANDLE_EXPORT(close_nif)
+WRAP_FILE_HANDLE_EXPORT(read_nif)
+WRAP_FILE_HANDLE_EXPORT(write_nif)
+WRAP_FILE_HANDLE_EXPORT(pread_nif)
+WRAP_FILE_HANDLE_EXPORT(pwrite_nif)
+WRAP_FILE_HANDLE_EXPORT(seek_nif)
+WRAP_FILE_HANDLE_EXPORT(sync_nif)
+WRAP_FILE_HANDLE_EXPORT(truncate_nif)
+WRAP_FILE_HANDLE_EXPORT(allocate_nif)
+WRAP_FILE_HANDLE_EXPORT(advise_nif)
+WRAP_FILE_HANDLE_EXPORT(get_handle_nif)
+WRAP_FILE_HANDLE_EXPORT(ipread_s32bu_p32bu_nif)
+
+static ErlNifFunc nif_funcs[] = {
+    /* File handle ops */
+    {"open_nif", 2, open_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"close_nif", 1, close_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"read_nif", 2, read_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"write_nif", 2, write_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"pread_nif", 3, pread_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"pwrite_nif", 3, pwrite_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"seek_nif", 3, seek_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"sync_nif", 2, sync_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"truncate_nif", 1, truncate_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"allocate_nif", 3, allocate_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"advise_nif", 4, advise_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+
+    /* Filesystem ops */
+    {"make_hard_link_nif", 2, make_hard_link_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"make_soft_link_nif", 2, make_soft_link_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"rename_nif", 2, rename_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"read_info_nif", 2, read_info_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"set_permissions_nif", 2, set_permissions_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"set_owner_nif", 3, set_owner_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"set_time_nif", 4, set_time_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"read_link_nif", 1, read_link_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"list_dir_nif", 1, list_dir_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"make_dir_nif", 1, make_dir_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"del_file_nif", 1, del_file_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"del_dir_nif", 1, del_dir_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"get_device_cwd_nif", 1, get_device_cwd_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"set_cwd_nif", 1, set_cwd_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"get_cwd_nif", 0, get_cwd_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+
+    /* These operations are equivalent to chained calls of other operations,
+     * but have been moved down to avoid excessive rescheduling. */
+    {"ipread_s32bu_p32bu_nif", 3, ipread_s32bu_p32bu_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+    {"read_file_nif", 1, read_file_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+
+    /* Internal ops. */
+    {"get_handle_nif", 1, get_handle_nif},
+    {"altname_nif", 1, altname_nif, ERL_NIF_DIRTY_JOB_IO_BOUND},
+};
+
+ERL_NIF_INIT(prim_file, nif_funcs, load, NULL, upgrade, unload)
+
+static void owner_death_callback(ErlNifEnv* env, void* obj, ErlNifPid* pid, ErlNifMonitor* mon);
+static void gc_callback(ErlNifEnv *env, void* data);
+
+static int load(ErlNifEnv *env, void** priv_data, ERL_NIF_TERM load_info)
+{
+    ErlNifResourceTypeInit callbacks;
+
+    am_ok = enif_make_atom(env, "ok");
+    am_error = enif_make_atom(env, "error");
+    am_continue = enif_make_atom(env, "continue");
+
+    am_read = enif_make_atom(env, "read");
+    am_write = enif_make_atom(env, "write");
+    am_exclusive = enif_make_atom(env, "exclusive");
+    am_append = enif_make_atom(env, "append");
+    am_sync = enif_make_atom(env, "sync");
+    am_skip_type_check = enif_make_atom(env, "skip_type_check");
+
+    am_read_write = enif_make_atom(env, "read_write");
+    am_none = enif_make_atom(env, "none");
+
+    am_normal = enif_make_atom(env, "normal");
+    am_random = enif_make_atom(env, "random");
+    am_sequential = enif_make_atom(env, "sequential");
+    am_will_need = enif_make_atom(env, "will_need");
+    am_dont_need = enif_make_atom(env, "dont_need");
+    am_no_reuse = enif_make_atom(env, "no_reuse");
+
+    am_device = enif_make_atom(env, "device");
+    am_directory = enif_make_atom(env, "directory");
+    am_regular = enif_make_atom(env, "regular");
+    am_symlink = enif_make_atom(env, "symlink");
+    am_other = enif_make_atom(env, "other");
+
+    am_file_info = enif_make_atom(env, "file_info");
+
+    am_bof = enif_make_atom(env, "bof");
+    am_cur = enif_make_atom(env, "cur");
+    am_eof = enif_make_atom(env, "eof");
+
+    callbacks.down = owner_death_callback;
+    callbacks.dtor = gc_callback;
+    callbacks.stop = NULL;
+
+    efile_resource_type = enif_open_resource_type_x(env, "efile", &callbacks,
+        ERL_NIF_RT_CREATE, NULL);
+
+    *priv_data = NULL;
+
+    return 0;
+}
+
+static void unload(ErlNifEnv *env, void* priv_data)
+{
+
+}
+
+static int upgrade(ErlNifEnv *env, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info)
+{
+    if(*old_priv_data != NULL) {
+        return -1; /* Don't know how to do that */
+    }
+    if(*priv_data != NULL) {
+        return -1; /* Don't know how to do that */
+    }
+    if(load(env, priv_data, load_info)) {
+        return -1;
+    }
+    return 0;
+}
+
+static ERL_NIF_TERM posix_error_to_tuple(ErlNifEnv *env, posix_errno_t posix_errno) {
+    ERL_NIF_TERM error = enif_make_atom(env, erl_errno_id(posix_errno));
+    return enif_make_tuple2(env, am_error, error);
+}
+
+static int get_file_data(ErlNifEnv *env, ERL_NIF_TERM opaque, efile_data_t **d) {
+    return enif_get_resource(env, opaque, efile_resource_type, (void **)d);
+}
+
+static ERL_NIF_TERM file_handle_wrapper(file_op_impl_t operation, ErlNifEnv *env,
+        int argc, const ERL_NIF_TERM argv[]) {
+
+    efile_data_t *d;
+
+    enum efile_state_t previous_state;
+    ERL_NIF_TERM result;
+
+    if(argc < 1 || !get_file_data(env, argv[0], &d)) {
+        return enif_make_badarg(env);
+    }
+
+    previous_state = erts_atomic32_cmpxchg_acqb(&d->state,
+        EFILE_STATE_BUSY, EFILE_STATE_IDLE);
+
+    if(previous_state == EFILE_STATE_IDLE) {
+        result = operation(d, env, argc - 1, &argv[1]);
+
+        previous_state = erts_atomic32_cmpxchg_relb(&d->state,
+            EFILE_STATE_IDLE, EFILE_STATE_BUSY);
+
+        ASSERT(previous_state != EFILE_STATE_IDLE);
+
+        if(previous_state == EFILE_STATE_CLOSE_PENDING) {
+            /* This is the only point where a change from CLOSE_PENDING is
+             * possible, and we're running synchronously, so we can't race with
+             * anything else here. */
+            erts_atomic32_set_acqb(&d->state, EFILE_STATE_CLOSED);
+            efile_close(d);
+        }
+    } else {
+        /* CLOSE_PENDING should be impossible at this point since it requires
+         * a transition from BUSY; the only valid state here is CLOSED. */
+        ASSERT(previous_state == EFILE_STATE_CLOSED);
+
+        result = posix_error_to_tuple(env, EINVAL);
+    }
+
+    return result;
+}
+
+static void owner_death_callback(ErlNifEnv* env, void* obj, ErlNifPid* pid, ErlNifMonitor* mon) {
+    efile_data_t *d = (efile_data_t*)obj;
+
+    (void)env;
+    (void)pid;
+    (void)mon;
+
+    for(;;) {
+        enum efile_state_t previous_state;
+
+        previous_state = erts_atomic32_cmpxchg_acqb(&d->state,
+            EFILE_STATE_CLOSED, EFILE_STATE_IDLE);
+
+        switch(previous_state) {
+        case EFILE_STATE_IDLE:
+            efile_close(d);
+            return;
+        case EFILE_STATE_CLOSE_PENDING:
+        case EFILE_STATE_CLOSED:
+            /* We're either already closed or managed to mark ourselves for
+             * closure in the previous iteration. */
+            return;
+        case EFILE_STATE_BUSY:
+            /* Schedule ourselves to be closed once the current operation
+             * finishes, retrying the [IDLE -> CLOSED] transition in case we
+             * narrowly passed the [BUSY -> IDLE] one. */
+            erts_atomic32_cmpxchg_nob(&d->state,
+                EFILE_STATE_CLOSE_PENDING, EFILE_STATE_BUSY);
+            break;
+        }
+    }
+}
+
+static void gc_callback(ErlNifEnv *env, void* data) {
+    efile_data_t *d = (efile_data_t*)data;
+
+    enum efile_state_t previous_state;
+
+    (void)env;
+
+    previous_state = erts_atomic32_cmpxchg_acqb(&d->state,
+        EFILE_STATE_CLOSED, EFILE_STATE_IDLE);
+
+    ASSERT(previous_state != EFILE_STATE_CLOSE_PENDING &&
+        previous_state != EFILE_STATE_BUSY);
+
+    if(previous_state == EFILE_STATE_IDLE) {
+        efile_close(d);
+    }
+}
+
+static ERL_NIF_TERM efile_filetype_to_atom(enum efile_filetype_t type) {
+    switch(type) {
+        case EFILE_FILETYPE_DEVICE: return am_device;
+        case EFILE_FILETYPE_DIRECTORY: return am_directory;
+        case EFILE_FILETYPE_REGULAR: return am_regular;
+        case EFILE_FILETYPE_SYMLINK: return am_symlink;
+        case EFILE_FILETYPE_OTHER: return am_other;
+    }
+
+    return am_other;
+}
+
+static ERL_NIF_TERM efile_access_to_atom(enum efile_access_t type) {
+    if(type & EFILE_ACCESS_READ && !(type & EFILE_ACCESS_WRITE)) {
+        return am_read;
+    } else if(type & EFILE_ACCESS_WRITE && !(type & EFILE_ACCESS_READ)) {
+        return am_write;
+    } else if(type & EFILE_ACCESS_READ_WRITE) {
+        return am_read_write;
+    }
+
+    return am_none;
+}
+
+static enum efile_modes_t efile_translate_modelist(ErlNifEnv *env, ERL_NIF_TERM list) {
+    enum efile_modes_t modes;
+    ERL_NIF_TERM head, tail;
+
+    modes = 0;
+
+    while(enif_get_list_cell(env, list, &head, &tail)) {
+        if(enif_is_identical(head, am_read)) {
+            modes |= EFILE_MODE_READ;
+        } else if(enif_is_identical(head, am_write)) {
+            modes |= EFILE_MODE_WRITE;
+        } else if(enif_is_identical(head, am_exclusive)) {
+            modes |= EFILE_MODE_EXCLUSIVE;
+        } else if(enif_is_identical(head, am_append)) {
+            modes |= EFILE_MODE_APPEND;
+        } else if(enif_is_identical(head, am_sync)) {
+            modes |= EFILE_MODE_SYNC;
+        } else if(enif_is_identical(head, am_skip_type_check)) {
+            modes |= EFILE_MODE_SKIP_TYPE_CHECK;
+        } else {
+            /* Modes like 'raw', 'ram', 'delayed_writes' etc are handled
+             * further up the chain. */
+        }
+
+        list = tail;
+    }
+
+    if(modes & (EFILE_MODE_APPEND | EFILE_MODE_EXCLUSIVE)) {
+        /* 'append' and 'exclusive' are documented as "open for writing." */
+        modes |= EFILE_MODE_WRITE;
+    } else if(!(modes & EFILE_MODE_READ_WRITE)) {
+        /* Defaulting to read if !(W|R) is undocumented, but specifically
+         * tested against in file_SUITE. */
+        modes |= EFILE_MODE_READ;
+    }
+
+    return modes;
+}
+
+static ERL_NIF_TERM open_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+    efile_data_t *d;
+
+    ErlNifPid controlling_process;
+    enum efile_modes_t modes;
+    ERL_NIF_TERM result;
+    efile_path_t path;
+
+    if(argc != 2 || !enif_is_list(env, argv[1])) {
+        return enif_make_badarg(env);
+    }
+
+    modes = efile_translate_modelist(env, argv[1]);
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_open(&path, modes, efile_resource_type, &d))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    result = enif_make_resource(env, d);
+    enif_release_resource(d);
+
+    enif_self(env, &controlling_process);
+
+    if(enif_monitor_process(env, d, &controlling_process, &d->monitor)) {
+        return posix_error_to_tuple(env, EINVAL);
+    }
+
+    return enif_make_tuple2(env, am_ok, result);
+}
+
+static ERL_NIF_TERM close_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    enum efile_state_t previous_state;
+
+    if(argc != 0) {
+        return enif_make_badarg(env);
+    }
+
+    previous_state = erts_atomic32_cmpxchg_acqb(&d->state,
+        EFILE_STATE_CLOSED, EFILE_STATE_BUSY);
+
+    ASSERT(previous_state == EFILE_STATE_CLOSE_PENDING ||
+        previous_state == EFILE_STATE_BUSY);
+
+    if(previous_state == EFILE_STATE_BUSY) {
+        enif_demonitor_process(env, d, &d->monitor);
+
+        if(!efile_close(d)) {
+            return posix_error_to_tuple(env, d->posix_errno);
+        }
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM read_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    Sint64 bytes_read, block_size;
+    SysIOVec read_vec[1];
+    ErlNifBinary result;
+
+    if(argc != 1 || !enif_is_number(env, argv[0])) {
+        return enif_make_badarg(env);
+    }
+
+    if(!enif_get_int64(env, argv[0], &block_size) || block_size < 0) {
+        return posix_error_to_tuple(env, EINVAL);
+    }
+
+    if(!enif_alloc_binary(block_size, &result)) {
+        return posix_error_to_tuple(env, ENOMEM);
+    }
+
+    read_vec[0].iov_base = result.data;
+    read_vec[0].iov_len = result.size;
+
+    bytes_read = efile_readv(d, read_vec, 1);
+    ASSERT(bytes_read <= block_size);
+
+    if(bytes_read < 0) {
+        return posix_error_to_tuple(env, d->posix_errno);
+    } else if(bytes_read == 0) {
+        enif_release_binary(&result);
+        return am_eof;
+    }
+
+    if(bytes_read < block_size && !enif_realloc_binary(&result, bytes_read)) {
+        ERTS_INTERNAL_ERROR("Failed to shrink read result.");
+    }
+
+    return enif_make_tuple2(env, am_ok, enif_make_binary(env, &result));
+}
+
+static ERL_NIF_TERM write_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    ErlNifIOVec vec, *input = &vec;
+    Sint64 bytes_written;
+    ERL_NIF_TERM tail;
+
+    if(argc != 1 || !enif_inspect_iovec(env, 64, argv[0], &tail, &input)) {
+        return enif_make_badarg(env);
+    }
+
+    bytes_written = efile_writev(d, input->iov, input->iovcnt);
+
+    if(bytes_written < 0) {
+        return posix_error_to_tuple(env, d->posix_errno);
+    }
+
+    if(!enif_is_empty_list(env, tail)) {
+        ASSERT(bytes_written > 0);
+        return enif_make_tuple2(env, am_continue, tail);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM pread_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    Sint64 bytes_read, block_size, offset;
+    SysIOVec read_vec[1];
+    ErlNifBinary result;
+
+    if(argc != 2 || !enif_is_number(env, argv[0])
+                 || !enif_is_number(env, argv[1])) {
+        return enif_make_badarg(env);
+    }
+
+    if(!enif_get_int64(env, argv[0], &offset) ||
+       !enif_get_int64(env, argv[1], &block_size) ||
+       (offset < 0 || block_size < 0)) {
+        return posix_error_to_tuple(env, EINVAL);
+    }
+
+    if(!enif_alloc_binary(block_size, &result)) {
+        return posix_error_to_tuple(env, ENOMEM);
+    }
+
+    read_vec[0].iov_base = result.data;
+    read_vec[0].iov_len = result.size;
+
+    bytes_read = efile_preadv(d, offset, read_vec, 1);
+
+    if(bytes_read < 0) {
+        return posix_error_to_tuple(env, d->posix_errno);
+    } else if(bytes_read == 0) {
+        enif_release_binary(&result);
+        return am_eof;
+    }
+
+    if(bytes_read < block_size && !enif_realloc_binary(&result, bytes_read)) {
+        ERTS_INTERNAL_ERROR("Failed to shrink pread result.");
+    }
+
+    return enif_make_tuple2(env, am_ok, enif_make_binary(env, &result));
+}
+
+static ERL_NIF_TERM pwrite_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    ErlNifIOVec vec, *input = &vec;
+    Sint64 bytes_written, offset;
+    ERL_NIF_TERM tail;
+
+    if(argc != 2 || !enif_is_number(env, argv[0])
+                 || !enif_inspect_iovec(env, 64, argv[1], &tail, &input)) {
+        return enif_make_badarg(env);
+    }
+
+    if(!enif_get_int64(env, argv[0], &offset) || offset < 0) {
+        return posix_error_to_tuple(env, EINVAL);
+    }
+
+    bytes_written = efile_pwritev(d, offset, input->iov, input->iovcnt);
+
+    if(bytes_written < 0) {
+        return posix_error_to_tuple(env, d->posix_errno);
+    }
+
+    if(!enif_is_empty_list(env, tail)) {
+        ASSERT(bytes_written > 0);
+        return enif_make_tuple3(env, am_continue,
+            enif_make_int64(env, bytes_written), tail);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM seek_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    Sint64 new_position, offset;
+    enum efile_seek_t seek;
+
+    if(argc != 2 || !enif_get_int64(env, argv[1], &offset)) {
+        return enif_make_badarg(env);
+    }
+
+    if(enif_is_identical(argv[0], am_bof)) {
+        seek = EFILE_SEEK_BOF;
+    } else if(enif_is_identical(argv[0], am_cur)) {
+        seek = EFILE_SEEK_CUR;
+    } else if(enif_is_identical(argv[0], am_eof)) {
+        seek = EFILE_SEEK_EOF;
+    } else {
+        return enif_make_badarg(env);
+    }
+
+    if(!efile_seek(d, seek, offset, &new_position)) {
+        return posix_error_to_tuple(env, d->posix_errno);
+    }
+
+    return enif_make_tuple2(env, am_ok, enif_make_uint64(env, new_position));
+}
+
+static ERL_NIF_TERM sync_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    int data_only;
+
+    if(argc != 1 || !enif_get_int(env, argv[0], &data_only)) {
+        return enif_make_badarg(env);
+    }
+
+    if(!efile_sync(d, data_only)) {
+        return posix_error_to_tuple(env, d->posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM truncate_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    if(argc != 0) {
+        return enif_make_badarg(env);
+    }
+
+    if(!efile_truncate(d)) {
+        return posix_error_to_tuple(env, d->posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM allocate_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    Sint64 offset, length;
+
+    if(argc != 2 || !enif_is_number(env, argv[0])
+                 || !enif_is_number(env, argv[1])) {
+        return enif_make_badarg(env);
+    }
+
+    if(!enif_get_int64(env, argv[0], &offset) ||
+       !enif_get_int64(env, argv[1], &length) ||
+       (offset < 0 || length < 0)) {
+        return posix_error_to_tuple(env, EINVAL);
+    }
+
+    if(!efile_allocate(d, offset, length)) {
+        return posix_error_to_tuple(env, d->posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM advise_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    enum efile_advise_t advise;
+    Sint64 offset, length;
+
+    if(argc != 3 || !enif_is_number(env, argv[0])
+                 || !enif_is_number(env, argv[1])) {
+        return enif_make_badarg(env);
+    }
+
+    if(!enif_get_int64(env, argv[0], &offset) ||
+       !enif_get_int64(env, argv[1], &length) ||
+       (offset < 0 || length < 0)) {
+        return posix_error_to_tuple(env, EINVAL);
+    }
+
+    if(enif_is_identical(argv[2], am_normal)) {
+        advise = EFILE_ADVISE_NORMAL;
+    } else if(enif_is_identical(argv[2], am_random)) {
+        advise = EFILE_ADVISE_RANDOM;
+    } else if(enif_is_identical(argv[2], am_sequential)) {
+        advise = EFILE_ADVISE_SEQUENTIAL;
+    } else if(enif_is_identical(argv[2], am_will_need)) {
+        advise = EFILE_ADVISE_WILL_NEED;
+    } else if(enif_is_identical(argv[2], am_dont_need)) {
+        advise = EFILE_ADVISE_DONT_NEED;
+    } else if(enif_is_identical(argv[2], am_no_reuse)) {
+        advise = EFILE_ADVISE_NO_REUSE;
+    } else {
+        /* The tests check for EINVAL instead of badarg. Sigh. */
+        return posix_error_to_tuple(env, EINVAL);
+    }
+
+    if(!efile_advise(d, offset, length, advise)) {
+        return posix_error_to_tuple(env, d->posix_errno);
+    }
+
+    return am_ok;
+}
+
+/* This undocumented function reads a pointer and then reads the data block
+ * described by said pointer. It was reverse-engineered from the old
+ * implementation so while all tests pass it may not be entirely correct. Our
+ * current understanding is as follows:
+ *
+ * Pointer layout:
+ *
+ *     <<Size:1/integer-unit:32, Offset:1/integer-unit:32>>
+ *
+ * Where Offset is the -absolute- address to the data block.
+ *
+ * *) If we fail to read the pointer block in its entirety, we return eof.
+ * *) If the provided max_payload_size is larger than Size, we return eof.
+ * *) If we fail to read any data whatsoever at Offset, we return
+ *    {ok, {Size, Offset, eof}}
+ * *) Otherwise, we return {ok, {Size, Offset, Data}}. Note that the size
+ *    of Data may be smaller than Size if we encounter EOF before we could
+ *    read the entire block.
+ *
+ * On errors we'll return {error, posix()} regardless of whether they
+ * happened before or after reading the pointer block. */
+static ERL_NIF_TERM ipread_s32bu_p32bu_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    Sint64 payload_offset, payload_size;
+
+    SysIOVec read_vec[1];
+    Sint64 bytes_read;
+
+    ErlNifBinary payload;
+
+    if(argc != 2 || !enif_is_number(env, argv[0])
+                 || !enif_is_number(env, argv[1])) {
+        return enif_make_badarg(env);
+    }
+
+    {
+        Sint64 max_payload_size, pointer_offset;
+        unsigned char pointer_block[8];
+
+        if(!enif_get_int64(env, argv[0], &pointer_offset) ||
+           !enif_get_int64(env, argv[1], &max_payload_size) ||
+           (pointer_offset < 0 || max_payload_size >= 1u << 31)) {
+            return posix_error_to_tuple(env, EINVAL);
+        }
+
+        read_vec[0].iov_base = pointer_block;
+        read_vec[0].iov_len = sizeof(pointer_block);
+
+        bytes_read = efile_preadv(d, pointer_offset, read_vec, 1);
+
+        if(bytes_read < 0) {
+            return posix_error_to_tuple(env, d->posix_errno);
+        } else if(bytes_read < sizeof(pointer_block)) {
+            return am_eof;
+        }
+
+        payload_size = (Uint32)get_int32(&pointer_block[0]);
+        payload_offset = (Uint32)get_int32(&pointer_block[4]);
+
+        if(payload_size > max_payload_size) {
+            return am_eof;
+        }
+    }
+
+    if(!enif_alloc_binary(payload_size, &payload)) {
+        return posix_error_to_tuple(env, ENOMEM);
+    }
+
+    read_vec[0].iov_base = payload.data;
+    read_vec[0].iov_len = payload.size;
+
+    bytes_read = efile_preadv(d, payload_offset, read_vec, 1);
+
+    if(bytes_read < 0) {
+        return posix_error_to_tuple(env, d->posix_errno);
+    } else if(bytes_read == 0) {
+        enif_release_binary(&payload);
+
+        return enif_make_tuple2(env, am_ok,
+                enif_make_tuple3(env,
+                    enif_make_uint(env, payload_size),
+                    enif_make_uint(env, payload_offset),
+                    am_eof));
+    }
+
+    if(bytes_read < payload.size && !enif_realloc_binary(&payload, bytes_read)) {
+        ERTS_INTERNAL_ERROR("Failed to shrink ipread payload.");
+    }
+
+    return enif_make_tuple2(env, am_ok,
+        enif_make_tuple3(env,
+            enif_make_uint(env, payload_size),
+            enif_make_uint(env, payload_offset),
+            enif_make_binary(env, &payload)));
+}
+
+static ERL_NIF_TERM get_handle_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    if(argc != 0) {
+        return enif_make_badarg(env);
+    }
+
+    return efile_get_handle(env, d);
+}
+
+static ERL_NIF_TERM read_info_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_fileinfo_t info = {0};
+    efile_path_t path;
+    int follow_links;
+
+    if(argc != 2 || !enif_get_int(env, argv[1], &follow_links)) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_read_info(&path, follow_links, &info))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    /* #file_info as declared in file.hrl */
+    return enif_make_tuple(env, 14,
+        am_file_info,
+        enif_make_uint64(env, info.size),
+        efile_filetype_to_atom(info.type),
+        efile_access_to_atom(info.access),
+        enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info.a_time)),
+        enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info.m_time)),
+        enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info.c_time)),
+        enif_make_uint(env, info.mode),
+        enif_make_uint(env, info.links),
+        enif_make_uint(env, info.major_device),
+        enif_make_uint(env, info.minor_device),
+        enif_make_uint(env, info.inode),
+        enif_make_uint(env, info.uid),
+        enif_make_uint(env, info.gid)
+    );
+}
+
+static ERL_NIF_TERM set_permissions_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t path;
+    Uint32 permissions;
+
+    if(argc != 2 || !enif_get_uint(env, argv[1], &permissions)) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_set_permissions(&path, permissions))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM set_owner_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t path;
+    Uint32 uid, gid;
+
+    if(argc != 3 || !enif_get_uint(env, argv[1], &uid)
+                 || !enif_get_uint(env, argv[2], &gid)) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_set_owner(&path, uid, gid))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM set_time_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    Sint64 accessed, modified, created;
+    efile_path_t path;
+
+    if(argc != 4 || !enif_get_int64(env, argv[1], &accessed)
+                 || !enif_get_int64(env, argv[2], &modified)
+                 || !enif_get_int64(env, argv[3], &created)) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_set_time(&path, accessed, modified, created))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM read_link_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t path;
+    ERL_NIF_TERM result;
+
+    if(argc != 1) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_read_link(env, &path, &result))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return enif_make_tuple2(env, am_ok, result);
+}
+
+static ERL_NIF_TERM list_dir_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t path;
+    ERL_NIF_TERM result;
+
+    if(argc != 1) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_list_dir(env, &path, &result))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return enif_make_tuple2(env, am_ok, result);
+}
+
+static ERL_NIF_TERM rename_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t existing_path, new_path;
+
+    if(argc != 2) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &existing_path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_marshal_path(env, argv[1], &new_path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_rename(&existing_path, &new_path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM make_hard_link_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t existing_path, new_path;
+
+    if(argc != 2) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &existing_path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_marshal_path(env, argv[1], &new_path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_make_hard_link(&existing_path, &new_path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM make_soft_link_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t existing_path, new_path;
+
+    if(argc != 2) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &existing_path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_marshal_path(env, argv[1], &new_path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_make_soft_link(&existing_path, &new_path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM make_dir_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t path;
+
+    if(argc != 1) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_make_dir(&path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM del_file_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t path;
+
+    if(argc != 1) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_del_file(&path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM del_dir_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t path;
+
+    if(argc != 1) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_del_dir(&path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM get_device_cwd_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    ERL_NIF_TERM result;
+    int device_index;
+
+    if(argc != 1 || !enif_get_int(env, argv[0], &device_index)) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_get_device_cwd(env, device_index, &result))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return enif_make_tuple2(env, am_ok, result);
+}
+
+static ERL_NIF_TERM get_cwd_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+    ERL_NIF_TERM result;
+
+    if(argc != 0) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_get_cwd(env, &result))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return enif_make_tuple2(env, am_ok, result);
+}
+
+static ERL_NIF_TERM set_cwd_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t path;
+
+    if(argc != 1) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_set_cwd(&path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return am_ok;
+}
+
+/** @brief Reads an entire file into \c result, stopping after \c size bytes or
+ * EOF. It will read until EOF if size is 0. */
+static posix_errno_t read_file(efile_data_t *d, size_t size, ErlNifBinary *result) {
+    size_t initial_buffer_size;
+    ssize_t bytes_read;
+
+    if(size == 0) {
+        initial_buffer_size = 16 << 10;
+    } else {
+        initial_buffer_size = size;
+    }
+
+    if(!enif_alloc_binary(initial_buffer_size, result)) {
+        return ENOMEM;
+    }
+
+    bytes_read = 0;
+
+    for(;;) {
+        ssize_t block_bytes_read;
+        SysIOVec read_vec[1];
+
+        read_vec[0].iov_base = result->data + bytes_read;
+        read_vec[0].iov_len = result->size - bytes_read;
+
+        block_bytes_read = efile_readv(d, read_vec, 1);
+
+        if(block_bytes_read < 0) {
+            enif_release_binary(result);
+            return d->posix_errno;
+        }
+
+        bytes_read += block_bytes_read;
+
+        if(block_bytes_read < (result->size - bytes_read)) {
+            /* EOF */
+            break;
+        } else if(bytes_read == size) {
+            break;
+        }
+
+        if(!enif_realloc_binary(result, bytes_read * 2)) {
+            enif_release_binary(result);
+            return ENOMEM;
+        }
+    }
+
+    /* The file may have shrunk since we queried its size, so we have to do
+     * this even when the size is known. */
+    if(bytes_read < result->size && !enif_realloc_binary(result, bytes_read)) {
+        ERTS_INTERNAL_ERROR("Failed to shrink read_file result.");
+    }
+
+    return 0;
+}
+
+static ERL_NIF_TERM read_file_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_fileinfo_t info = {0};
+    efile_path_t path;
+    efile_data_t *d;
+
+    ErlNifBinary result;
+
+    if(argc != 1) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_read_info(&path, 1, &info))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_open(&path, EFILE_MODE_READ, efile_resource_type, &d))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    posix_errno = read_file(d, info.size, &result);
+    enif_release_resource(d);
+
+    if(posix_errno) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return enif_make_tuple2(env, am_ok, enif_make_binary(env, &result));
+}
+
+static ERL_NIF_TERM altname_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    posix_errno_t posix_errno;
+
+    efile_path_t path;
+    ERL_NIF_TERM result;
+
+    if(argc != 1) {
+        return enif_make_badarg(env);
+    }
+
+    if((posix_errno = efile_marshal_path(env, argv[0], &path))) {
+        return posix_error_to_tuple(env, posix_errno);
+    } else if((posix_errno = efile_altname(env, &path, &result))) {
+        return posix_error_to_tuple(env, posix_errno);
+    }
+
+    return enif_make_tuple2(env, am_ok, result);
+}
diff --git a/erts/emulator/nifs/common/prim_file_nif.h b/erts/emulator/nifs/common/prim_file_nif.h
new file mode 100644
index 0000000000..cc9bc8f5c3
--- /dev/null
+++ b/erts/emulator/nifs/common/prim_file_nif.h
@@ -0,0 +1,240 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson 2017. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+typedef int posix_errno_t;
+
+enum efile_modes_t {
+    EFILE_MODE_READ = (1 << 0),
+    EFILE_MODE_WRITE = (1 << 1), /* Implies truncating file when used alone. */
+    EFILE_MODE_APPEND = (1 << 2),
+    EFILE_MODE_EXCLUSIVE = (1 << 3),
+    EFILE_MODE_SYNC = (1 << 4),
+
+    EFILE_MODE_SKIP_TYPE_CHECK = (1 << 5), /* Special for device files on Unix. */
+    EFILE_MODE_NO_TRUNCATE = (1 << 6), /* Special for reopening on VxWorks. */
+
+    EFILE_MODE_READ_WRITE = EFILE_MODE_READ | EFILE_MODE_WRITE
+};
+
+enum efile_access_t {
+    EFILE_ACCESS_NONE = 0,
+    EFILE_ACCESS_READ = 1,
+    EFILE_ACCESS_WRITE = 2,
+    EFILE_ACCESS_READ_WRITE = EFILE_ACCESS_READ | EFILE_ACCESS_WRITE
+};
+
+enum efile_seek_t {
+    EFILE_SEEK_BOF,
+    EFILE_SEEK_CUR,
+    EFILE_SEEK_EOF
+};
+
+enum efile_filetype_t {
+    EFILE_FILETYPE_DEVICE,
+    EFILE_FILETYPE_DIRECTORY,
+    EFILE_FILETYPE_REGULAR,
+    EFILE_FILETYPE_SYMLINK,
+    EFILE_FILETYPE_OTHER
+};
+
+enum efile_advise_t {
+    EFILE_ADVISE_NORMAL,
+    EFILE_ADVISE_RANDOM,
+    EFILE_ADVISE_SEQUENTIAL,
+    EFILE_ADVISE_WILL_NEED,
+    EFILE_ADVISE_DONT_NEED,
+    EFILE_ADVISE_NO_REUSE
+};
+
+enum efile_state_t {
+    EFILE_STATE_IDLE = 0,
+    EFILE_STATE_BUSY = 1,
+    EFILE_STATE_CLOSE_PENDING = 2,
+    EFILE_STATE_CLOSED = 3
+};
+
+typedef struct {
+    Sint64 size;            /* Size of file */
+    Uint32 type;            /* Type of file -- one of EFILE_FILETYPE_*. */
+    Uint32 access;          /* Access to file -- one of EFILE_ACCESS_*. */
+    Uint32 mode;            /* Access permissions -- bit field. */
+    Uint32 links;           /* Number of links to file. */
+    Uint32 major_device;    /* Major device or file system. */
+    Uint32 minor_device;    /* Minor device (for devices). */
+    Uint32 inode;           /* Inode number. */
+    Uint32 uid;             /* User id of owner. */
+    Uint32 gid;             /* Group id of owner. */
+    Sint64 a_time;          /* Last time the file was accessed. */
+    Sint64 m_time;          /* Last time the file was modified. */
+    Sint64 c_time;          /* Windows: creation time, Unix: last inode
+                             * change. */
+} efile_fileinfo_t;
+
+/* The smallest value that can be converted freely between universal, local,
+ * and POSIX time, as required by read_file_info/2. Corresponds to
+ * {{1902,1,1},{0,0,0}} */
+#define EFILE_MIN_FILETIME -2145916800
+
+/* Initializes an efile_data_t; must be used in efile_open on success. */
+#define EFILE_INIT_RESOURCE(__d, __modes) do { \
+        erts_atomic32_init_acqb(&(__d)->state, EFILE_STATE_IDLE); \
+        (__d)->posix_errno = 0; \
+        (__d)->modes = __modes; \
+    } while(0)
+
+typedef struct {
+    erts_atomic32_t state;
+
+    posix_errno_t posix_errno;
+    enum efile_modes_t modes;
+
+    ErlNifMonitor monitor;
+} efile_data_t;
+
+typedef ErlNifBinary efile_path_t;
+
+/* @brief Translates the given "raw name" into the format expected by the APIs
+ * used by the underlying implementation. The result is transient and does not
+ * need to be released.
+ *
+ * This may change the structure of the path and its results should never be
+ * passed on to the user. Refer to the OS-specific implementation for details.
+ *
+ * @param path The term to translate; it must have been encoded with
+ * prim_file:internal_native2name for compatibility reasons. */
+posix_errno_t efile_marshal_path(ErlNifEnv *env, ERL_NIF_TERM path, efile_path_t *result);
+
+/* @brief Returns the underlying handle as an implementation-defined term.
+ *
+ * This is an internal function intended to support tests and tricky
+ * operations like sendfile(2). */
+ERL_NIF_TERM efile_get_handle(ErlNifEnv *env, efile_data_t *d);
+
+/* @brief Read until EOF or the given iovec has been filled.
+ *
+ * @return -1 on failure, or the number of bytes read on success. The return
+ * value will be 0 if no bytes could be read before EOF or the end of the
+ * iovec. */
+Sint64 efile_readv(efile_data_t *d, SysIOVec *iov, int iovlen);
+
+/* @brief Write the entirety of the given iovec.
+ *
+ * @return -1 on failure, or the number of bytes written on success. "Partial"
+ * failures will be reported with -1 and not the number of bytes we managed to
+ * write to disk before the failure. */
+Sint64 efile_writev(efile_data_t *d, SysIOVec *iov, int iovlen);
+
+/* @brief As \c efile_readv, but starting from a file offset. */
+Sint64 efile_preadv(efile_data_t *d, Sint64 offset, SysIOVec *iov, int iovlen);
+
+/* @brief As \c efile_writev, but starting from a file offset. */
+Sint64 efile_pwritev(efile_data_t *d, Sint64 offset, SysIOVec *iov, int iovlen);
+
+int efile_seek(efile_data_t *d, enum efile_seek_t seek, Sint64 offset, Sint64 *new_position);
+
+int efile_sync(efile_data_t *d, int data_only);
+
+int efile_advise(efile_data_t *d, Sint64 offset, Sint64 length, enum efile_advise_t advise);
+int efile_allocate(efile_data_t *d, Sint64 offset, Sint64 length);
+int efile_truncate(efile_data_t *d);
+
+posix_errno_t efile_open(const efile_path_t *path, enum efile_modes_t modes,
+        ErlNifResourceType *nif_type, efile_data_t **d);
+
+/** @brief Closes a file. The file must have entered the CLOSED state prior to
+ * calling this to prevent double close. */
+int efile_close(efile_data_t *d);
+
+/* **** **** **** **** **** **** **** **** **** **** **** **** **** **** **** */
+
+posix_errno_t efile_read_info(const efile_path_t *path, int follow_link, efile_fileinfo_t *result);
+
+/** @brief Sets the file times to the given values. Refer to efile_fileinfo_t
+ * for a description of each. */
+posix_errno_t efile_set_time(const efile_path_t *path, Sint64 a_time, Sint64 m_time, Sint64 c_time);
+
+/** @brief On Unix, this sets the file permissions according to the docs for
+ * file:write_file_info/2. On Windows it uses the "owner write permission" flag
+ * to toggle whether the file is read-only or not. */
+posix_errno_t efile_set_permissions(const efile_path_t *path, Uint32 permissions);
+
+/** @brief On Unix, this will set the owner/group to the given values. It will
+ * do nothing on other platforms. */
+posix_errno_t efile_set_owner(const efile_path_t *path, Uint32 owner, Uint32 group);
+
+/** @brief Resolves the final path of the given link. */
+posix_errno_t efile_read_link(ErlNifEnv *env, const efile_path_t *path, ERL_NIF_TERM *result);
+
+/** @brief Lists the contents of the given directory.
+ * @param result [out] A list of all the directory/file names contained in the
+ * given directory. */
+posix_errno_t efile_list_dir(ErlNifEnv *env, const efile_path_t *path, ERL_NIF_TERM *result);
+
+/** @brief Changes the name of an existing file or directory, from old_path
+ * to new_path.
+ *
+ * If old_path and new_path refer to the same file or directory, it does
+ * nothing and returns success. Otherwise if new_path already exists, it will
+ * be deleted and replaced by src subject to the following conditions:
+ *
+ *     If old_path is a directory, new_path may be an empty directory.
+ *     If old_path is a file, new_path may be a file.
+ *
+ * Neither of these are guaranteed to be atomic. In any other situation where
+ * new_path already exists, the rename will fail.
+ *
+ * Some possible error codes:
+ *
+ * - EACCES:     Either paths or one of their parent directories can't be read
+ *               and/or written.
+ * - EEXIST:     new_path is a non-empty directory.
+ * - EINVAL:     old_path is a root directory or new_path is a subdirectory
+ *               of new_path.
+ * - EISDIR:     new_path is a directory, but old_path is not.
+ * - ENOTDIR:    old_path is a directory, but new_path is not.
+ * - ENOENT:     old_path doesn't exist, or either path is "".
+ * - EXDEV:      The paths are on different filesystems.
+ *
+ * The implementation of rename may allow cross-filesystem renames,
+ * but the caller should be prepared to emulate it with copy and
+ * delete if errno is EXDEV. */
+posix_errno_t efile_rename(const efile_path_t *old_path, const efile_path_t *new_path);
+
+posix_errno_t efile_make_hard_link(const efile_path_t *existing_path, const efile_path_t *new_path);
+posix_errno_t efile_make_soft_link(const efile_path_t *existing_path, const efile_path_t *new_path);
+posix_errno_t efile_make_dir(const efile_path_t *path);
+
+posix_errno_t efile_del_file(const efile_path_t *path);
+posix_errno_t efile_del_dir(const efile_path_t *path);
+
+posix_errno_t efile_get_cwd(ErlNifEnv *env, ERL_NIF_TERM *result);
+posix_errno_t efile_set_cwd(const efile_path_t *path);
+
+/** @brief A Windows-specific function for returning the working directory of a
+ * given device.
+ *
+ * @param device_index The drive index; 1 for A, 2 for B, etc.
+ * @param result [out] The working directory of the given device
+ */
+posix_errno_t efile_get_device_cwd(ErlNifEnv *env, int device_index, ERL_NIF_TERM *result);
+
+/** @brief A Windows-specific function for returning the 8.3-name of a given
+ * file or directory. */
+posix_errno_t efile_altname(ErlNifEnv *env, const efile_path_t *path, ERL_NIF_TERM *result);
diff --git a/erts/emulator/nifs/common/zlib_nif.c b/erts/emulator/nifs/common/zlib_nif.c
index a9c5b05e47..b709ed5a6f 100644
--- a/erts/emulator/nifs/common/zlib_nif.c
+++ b/erts/emulator/nifs/common/zlib_nif.c
@@ -106,6 +106,7 @@ typedef struct {
     int inflateChunk_buffer_size;
 
     ErlNifPid controlling_process;
+    ErlNifMutex *controller_lock;
 
     ErlNifIOQueue *input_queue;
 
@@ -117,6 +118,8 @@ typedef struct {
 
 static ERL_NIF_TERM zlib_open(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM zlib_close(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_set_controller(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
 static ERL_NIF_TERM zlib_deflateInit(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM zlib_deflateSetDictionary(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM zlib_deflateReset(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
@@ -143,6 +146,11 @@ static ERL_NIF_TERM zlib_setBufSize(ErlNifEnv *env, int argc, const ERL_NIF_TERM
 static ERL_NIF_TERM zlib_enqueue_input(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
 
 static ErlNifFunc nif_funcs[] = {
+    {"close_nif", 1, zlib_close},
+    {"open_nif", 0, zlib_open},
+
+    {"set_controller_nif", 2, zlib_set_controller},
+
     /* deflate */
     {"deflateInit_nif", 6, zlib_deflateInit},
     {"deflateSetDictionary_nif", 2, zlib_deflateSetDictionary},
@@ -162,10 +170,6 @@ static ErlNifFunc nif_funcs[] = {
     /* running checksum */
     {"crc32_nif", 1, zlib_crc32},
 
-    /* open & close */
-    {"close_nif", 1, zlib_close},
-    {"open_nif", 0, zlib_open},
-
     /* The stash keeps a single term alive across calls, and is used in
      * exception_on_need_dict/1 to retain the old error behavior, and for
      * saving data flushed through deflateParams/3. */
@@ -281,9 +285,7 @@ static ERL_NIF_TERM zlib_return(ErlNifEnv *env, int code) {
     return reason;
 }
 
-static void gc_zlib(ErlNifEnv *env, void* data) {
-    zlib_data_t *d = (zlib_data_t*)data;
-
+static void zlib_internal_close(zlib_data_t *d) {
     if(d->state == ST_DEFLATE) {
         deflateEnd(&d->s);
     } else if(d->state == ST_INFLATE) {
@@ -291,8 +293,6 @@ static void gc_zlib(ErlNifEnv *env, void* data) {
     }
 
     if(d->state != ST_CLOSED) {
-        enif_ioq_destroy(d->input_queue);
-
         if(d->stash_env != NULL) {
             enif_free_env(d->stash_env);
         }
@@ -301,17 +301,36 @@ static void gc_zlib(ErlNifEnv *env, void* data) {
     }
 }
 
+static void gc_zlib(ErlNifEnv *env, void* data) {
+    zlib_data_t *d = (zlib_data_t*)data;
+
+    enif_mutex_destroy(d->controller_lock);
+    enif_ioq_destroy(d->input_queue);
+
+    zlib_internal_close(d);
+
+    (void)env;
+}
+
 static int get_zlib_data(ErlNifEnv *env, ERL_NIF_TERM opaque, zlib_data_t **d) {
     return enif_get_resource(env, opaque, rtype_zlib, (void **)d);
 }
 
 static int zlib_process_check(ErlNifEnv *env, zlib_data_t *d) {
+    int is_controlling_process;
     ErlNifPid current_process;
 
     enif_self(env, &current_process);
 
-    return enif_is_identical(enif_make_pid(env, &current_process),
+    enif_mutex_lock(d->controller_lock);
+
+    is_controlling_process = enif_is_identical(
+        enif_make_pid(env, &current_process),
         enif_make_pid(env, &d->controlling_process));
+
+    enif_mutex_unlock(d->controller_lock);
+
+    return is_controlling_process;
 }
 
 static void zlib_reset_input(zlib_data_t *d) {
@@ -516,6 +535,8 @@ static ERL_NIF_TERM zlib_open(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[
 
     d->input_queue = enif_ioq_create(ERL_NIF_IOQ_NORMAL);
 
+    d->controller_lock = enif_mutex_create("zlib_controller_lock");
+
     d->s.zalloc = zlib_alloc;
     d->s.zfree  = zlib_free;
     d->s.opaque = d;
@@ -556,7 +577,28 @@ static ERL_NIF_TERM zlib_close(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv
         return enif_raise_exception(env, am_not_initialized);
     }
 
-    gc_zlib(env, d);
+    zlib_internal_close(d);
+
+    return am_ok;
+}
+
+static ERL_NIF_TERM zlib_set_controller(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+    zlib_data_t *d;
+
+    ErlNifPid new_owner;
+
+    if(argc != 2 || !get_zlib_data(env, argv[0], &d)
+                 || !enif_get_local_pid(env, argv[1], &new_owner)) {
+        return enif_make_badarg(env);
+    } else if(!zlib_process_check(env, d)) {
+        return enif_raise_exception(env, am_not_on_controlling_process);
+    }
+
+    enif_mutex_lock(d->controller_lock);
+
+    d->controlling_process = new_owner;
+
+    enif_mutex_unlock(d->controller_lock);
 
     return am_ok;
 }
@@ -675,7 +717,9 @@ static ERL_NIF_TERM zlib_deflateEnd(ErlNifEnv *env, int argc, const ERL_NIF_TERM
 
 static ERL_NIF_TERM zlib_deflateParams(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
     zlib_data_t *d;
+
     int res, level, strategy;
+    Bytef dummy_buffer;
 
     if(argc != 3 || !get_zlib_data(env, argv[0], &d)
                  || !enif_get_int(env, argv[1], &level)
@@ -687,12 +731,27 @@ static ERL_NIF_TERM zlib_deflateParams(ErlNifEnv *env, int argc, const ERL_NIF_T
         return enif_raise_exception(env, am_not_initialized);
     }
 
-    /* deflateParams will flush everything currently in the stream, corrupting
-     * the heap unless it's empty. We therefore pretend to have a full output
-     * buffer, forcing a Z_BUF_ERROR if there's anything left to be flushed. */
-    d->s.avail_out = 0;
+    /* This is a bit of a hack; deflateParams flushes with Z_BLOCK which won't
+     * stop at a byte boundary, so we can't split this operation up, and we
+     * can't allocate a buffer large enough to fit it in one go since we have
+     * to support zlib versions that lack deflatePending.
+     *
+     * We therefore flush everything prior to this call to ensure that we are
+     * stopped on a byte boundary and have no pending data. We then hand it a
+     * dummy buffer to detect when this assumption doesn't hold (Hopefully
+     * never), and to smooth over an issue with zlib 1.2.11 which always
+     * returns Z_BUF_ERROR when d->s.avail_out is 0, regardless of whether
+     * there's any pending data or not. */
+
+    d->s.next_out = &dummy_buffer;
+    d->s.avail_out = 1;
+
     res = deflateParams(&d->s, level, strategy);
 
+    if(d->s.avail_out == 0) {
+        return zlib_return(env, Z_STREAM_ERROR);
+    }
+
     return zlib_return(env, res);
 }
 
@@ -887,7 +946,7 @@ static ERL_NIF_TERM zlib_inflate(ErlNifEnv *env, int argc, const ERL_NIF_TERM ar
         return enif_raise_exception(env, am_not_initialized);
     }
 
-    if(d->eos_seen) {
+    if(d->eos_seen && enif_ioq_size(d->input_queue) > 0) {
         int res;
 
         switch(d->eos_behavior) {
@@ -901,11 +960,10 @@ static ERL_NIF_TERM zlib_inflate(ErlNifEnv *env, int argc, const ERL_NIF_TERM ar
             }
 
             d->eos_seen = 0;
+
             break;
         case EOS_BEHAVIOR_CUT:
             zlib_reset_input(d);
-
-            return enif_make_tuple2(env, am_finished, enif_make_list(env, 0));
         }
     }
 
diff --git a/erts/emulator/nifs/unix/unix_prim_file.c b/erts/emulator/nifs/unix/unix_prim_file.c
new file mode 100644
index 0000000000..57c8ef62e1
--- /dev/null
+++ b/erts/emulator/nifs/unix/unix_prim_file.c
@@ -0,0 +1,957 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson 2017. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "erl_nif.h"
+#include "config.h"
+#include "sys.h"
+
+#ifdef VALGRIND
+#  include <valgrind/memcheck.h>
+#endif
+
+#include "prim_file_nif.h"
+
+#if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__)
+#define __DARWIN__ 1
+#endif
+
+#if defined(__DARWIN__) || defined(HAVE_LINUX_FALLOC_H) || defined(HAVE_POSIX_FALLOCATE)
+#include <fcntl.h>
+#endif
+
+#ifdef HAVE_LINUX_FALLOC_H
+#include <linux/falloc.h>
+#endif
+
+#include <utime.h>
+
+/* Macros for testing file types. */
+#ifdef NO_UMASK
+#define FILE_MODE 0644
+#define DIR_MODE  0755
+#else
+#define FILE_MODE 0666
+#define DIR_MODE  0777
+#endif
+
+/* Old platforms might not have IOV_MAX defined. */
+#if !defined(IOV_MAX) && defined(UIO_MAXIOV)
+#define IOV_MAX UIO_MAXIOV
+#elif !defined(IOV_MAX)
+#define IOV_MAX 16
+#endif
+
+typedef struct {
+    efile_data_t common;
+    int fd;
+} efile_unix_t;
+
+static int has_invalid_null_termination(const ErlNifBinary *path) {
+    const char *null_pos, *end_pos;
+
+    null_pos = memchr(path->data, '\0', path->size);
+    end_pos = (const char*)&path->data[path->size] - 1;
+
+    if(null_pos == NULL) {
+        return 1;
+    }
+
+    /* prim_file:internal_name2native sometimes feeds us data that is "doubly"
+     * NUL-terminated, so we'll accept any number of trailing NULs so long as
+     * they aren't interrupted by anything else. */
+    while(null_pos < end_pos && (*null_pos) == '\0') {
+        null_pos++;
+    }
+
+    return null_pos != end_pos;
+}
+
+posix_errno_t efile_marshal_path(ErlNifEnv *env, ERL_NIF_TERM path, efile_path_t *result) {
+    if(!enif_inspect_binary(env, path, result)) {
+        return EINVAL;
+    }
+
+    if(has_invalid_null_termination(result)) {
+        return EINVAL;
+    }
+
+    return 0;
+}
+
+ERL_NIF_TERM efile_get_handle(ErlNifEnv *env, efile_data_t *d) {
+    efile_unix_t *u = (efile_unix_t*)d;
+
+    ERL_NIF_TERM result;
+    unsigned char *bits;
+
+    bits = enif_make_new_binary(env, sizeof(u->fd), &result);
+    memcpy(bits, &u->fd, sizeof(u->fd));
+
+    return result;
+}
+
+static int open_file_type_check(const efile_path_t *path, int fd) {
+    struct stat file_info;
+    int error;
+
+#ifndef HAVE_FSTAT
+    error = stat((const char*)path->data, &file_info);
+    (void)fd;
+#else
+    error = fstat(fd, &file_info);
+    (void)path;
+#endif
+
+    if(error < 0) {
+        /* If we failed to stat assume success and let the next call handle the
+         * error. The old driver checked whether the file was to be used
+         * immediately in a read within the call, but the new implementation
+         * never does that. */
+         return 1;
+    } else {
+        /* The old driver tolerated opening /dev/null despite the "no devices"
+         * limitation. It provided no explanation for this but we still need
+         * to match the behavior. We're checking through stat(2) instead of
+         * comparing the name to account for links. */
+        struct stat null_device_info;
+        int is_dev_null;
+
+        is_dev_null = (stat("/dev/null", &null_device_info) == 0);
+        is_dev_null &= (file_info.st_ino == null_device_info.st_ino);
+        is_dev_null &= (file_info.st_dev == null_device_info.st_dev);
+
+        if(is_dev_null) {
+            return 1;
+        }
+    }
+
+    if(!S_ISREG(file_info.st_mode)) {
+        return 0;
+    }
+
+    return 1;
+}
+
+posix_errno_t efile_open(const efile_path_t *path, enum efile_modes_t modes,
+        ErlNifResourceType *nif_type, efile_data_t **d) {
+
+    int flags, fd;
+
+    flags = 0;
+
+    if(modes & EFILE_MODE_READ && !(modes & EFILE_MODE_WRITE)) {
+        flags |= O_RDONLY;
+    } else if(modes & EFILE_MODE_WRITE && !(modes & EFILE_MODE_READ)) {
+        if(!(modes & EFILE_MODE_NO_TRUNCATE)) {
+            flags |= O_TRUNC;
+        }
+
+        flags |= O_WRONLY | O_CREAT;
+    } else if(modes & EFILE_MODE_READ_WRITE) {
+        flags |= O_RDWR | O_CREAT;
+    } else {
+        return EINVAL;
+    }
+
+    if(modes & EFILE_MODE_APPEND) {
+        flags &= ~O_TRUNC;
+        flags |= O_APPEND;
+    }
+
+    if(modes & EFILE_MODE_EXCLUSIVE) {
+        flags |= O_EXCL;
+    }
+
+    if(modes & EFILE_MODE_SYNC) {
+#ifndef O_SYNC
+        return ENOTSUP;
+#else
+        flags |= O_SYNC;
+#endif
+    }
+
+    do {
+        fd = open((const char*)path->data, flags, FILE_MODE);
+    } while(fd == -1 && errno == EINTR);
+
+    if(fd != -1) {
+        efile_unix_t *u;
+
+        if(!(modes & EFILE_MODE_SKIP_TYPE_CHECK) && !open_file_type_check(path, fd)) {
+            close(fd);
+
+            /* This is blatantly incorrect, but we're documented as returning
+             * this for everything that isn't a file. */
+            return EISDIR;
+        }
+
+        u = (efile_unix_t*)enif_alloc_resource(nif_type, sizeof(efile_unix_t));
+        u->fd = fd;
+
+        EFILE_INIT_RESOURCE(&u->common, modes);
+        (*d) = &u->common;
+
+        return 0;
+    }
+
+    (*d) = NULL;
+    return errno;
+}
+
+int efile_close(efile_data_t *d) {
+    efile_unix_t *u = (efile_unix_t*)d;
+    int fd;
+
+    ASSERT(erts_atomic32_read_nob(&d->state) == EFILE_STATE_CLOSED);
+    ASSERT(u->fd != -1);
+
+    fd = u->fd;
+    u->fd = -1;
+
+    /* close(2) either always closes (*BSD, Linux) or leaves the fd in an
+     * undefined state (POSIX 2008, Solaris), so we must not retry on EINTR. */
+
+    if(close(fd) < 0) {
+        u->common.posix_errno = errno;
+        return 0;
+    }
+
+    return 1;
+}
+
+static void shift_iov(SysIOVec **iov, int *iovlen, ssize_t shift) {
+    SysIOVec *head_vec = (*iov);
+
+    ASSERT(shift >= 0);
+
+    while(shift > 0) {
+        ASSERT(head_vec < &(*iov)[*iovlen]);
+
+        if(shift < head_vec->iov_len) {
+            head_vec->iov_base = (char*)head_vec->iov_base + shift;
+            head_vec->iov_len -= shift;
+            break;
+        } else {
+            shift -= head_vec->iov_len;
+            head_vec++;
+        }
+    }
+
+    (*iovlen) -= head_vec - (*iov);
+    (*iov) = head_vec;
+}
+
+Sint64 efile_readv(efile_data_t *d, SysIOVec *iov, int iovlen) {
+    efile_unix_t *u = (efile_unix_t*)d;
+
+    Sint64 bytes_read;
+    ssize_t result;
+
+    bytes_read = 0;
+
+    do {
+        int use_fallback = 0;
+
+        if(iovlen < 1) {
+            result = 0;
+            break;
+        }
+
+        /* writev(2) implies readv(2) */
+#ifdef HAVE_WRITEV
+        result = readv(u->fd, iov, MIN(IOV_MAX, iovlen));
+
+        /* Fall back to using read(2) if readv(2) reports that the combined
+         * size of iov is greater than SSIZE_T_MAX. */
+        use_fallback = (result < 0 && errno == EINVAL);
+#else
+        use_fallback = 1;
+#endif
+
+        if(use_fallback) {
+            result = read(u->fd, iov->iov_base, iov->iov_len);
+        }
+
+        if(result > 0) {
+            shift_iov(&iov, &iovlen, result);
+            bytes_read += result;
+        }
+    } while(result > 0 || (result < 0 && errno == EINTR));
+
+    u->common.posix_errno = errno;
+
+    if(result == 0 && bytes_read > 0) {
+        return bytes_read;
+    }
+
+    return result;
+}
+
+Sint64 efile_writev(efile_data_t *d, SysIOVec *iov, int iovlen) {
+    efile_unix_t *u = (efile_unix_t*)d;
+
+    Sint64 bytes_written;
+    ssize_t result;
+
+    bytes_written = 0;
+
+    do {
+        int use_fallback = 0;
+
+        if(iovlen < 1) {
+            result = 0;
+            break;
+        }
+
+#ifdef HAVE_WRITEV
+        result = writev(u->fd, iov, MIN(IOV_MAX, iovlen));
+
+        /* Fall back to using write(2) if writev(2) reports that the combined
+         * size of iov is greater than SSIZE_T_MAX. */
+        use_fallback = (result < 0 && errno == EINVAL);
+#else
+        use_fallback = 1;
+#endif
+
+        if(use_fallback) {
+            result = write(u->fd, iov->iov_base, iov->iov_len);
+        }
+
+        if(result > 0) {
+            shift_iov(&iov, &iovlen, result);
+            bytes_written += result;
+        }
+    } while(result > 0 || (result < 0 && errno == EINTR));
+
+    u->common.posix_errno = errno;
+
+    if(result == 0 && bytes_written > 0) {
+        return bytes_written;
+    }
+
+    return result;
+}
+
+Sint64 efile_preadv(efile_data_t *d, Sint64 offset, SysIOVec *iov, int iovlen) {
+    efile_unix_t *u = (efile_unix_t*)d;
+
+    Uint64 bytes_read;
+    Sint64 result;
+
+#if !defined(HAVE_PREADV) && !defined(HAVE_PREAD)
+    /* This function is documented as leaving the file position undefined, but
+     * the old driver always reset it so there's probably code in the wild that
+     * relies on this behavior. */
+    off_t original_position = lseek(u->fd, 0, SEEK_CUR);
+
+    if(original_position < 0 || lseek(u->fd, offset, SEEK_SET) < 0) {
+        u->common.posix_errno = errno;
+        return -1;
+    }
+#endif
+
+    bytes_read = 0;
+
+    do {
+        if(iovlen < 1) {
+            result = 0;
+            break;
+        }
+
+#if defined(HAVE_PREADV)
+        result = preadv(u->fd, iov, MIN(IOV_MAX, iovlen), offset);
+#elif defined(HAVE_PREAD)
+        result = pread(u->fd, iov->iov_base, iov->iov_len, offset);
+#else
+        result = read(u->fd, iov->iov_base, iov->iov_len);
+#endif
+
+        if(result > 0) {
+            shift_iov(&iov, &iovlen, result);
+            bytes_read += result;
+            offset += result;
+        }
+    } while(result > 0 || (result < 0 && errno == EINTR));
+
+    u->common.posix_errno = errno;
+
+#if !defined(HAVE_PREADV) && !defined(HAVE_PREAD)
+    if(result >= 0) {
+        if(lseek(u->fd, original_position, SEEK_SET) < 0) {
+            u->common.posix_errno = errno;
+            return -1;
+        }
+    }
+#endif
+
+    if(result == 0 && bytes_read > 0) {
+        return bytes_read;
+    }
+
+    return result;
+}
+
+Sint64 efile_pwritev(efile_data_t *d, Sint64 offset, SysIOVec *iov, int iovlen) {
+    efile_unix_t *u = (efile_unix_t*)d;
+
+    Sint64 bytes_written;
+    ssize_t result;
+
+#if !defined(HAVE_PWRITEV) && !defined(HAVE_PWRITE)
+    off_t original_position = lseek(u->fd, 0, SEEK_CUR);
+
+    if(original_position < 0 || lseek(u->fd, offset, SEEK_SET) < 0) {
+        u->common.posix_errno = errno;
+        return -1;
+    }
+#endif
+
+    bytes_written = 0;
+
+    do {
+        if(iovlen < 1) {
+            result = 0;
+            break;
+        }
+
+#if defined(HAVE_PWRITEV)
+        result = pwritev(u->fd, iov, MIN(IOV_MAX, iovlen), offset);
+#elif defined(HAVE_PWRITE)
+        result = pwrite(u->fd, iov->iov_base, iov->iov_len, offset);
+#else
+        result = write(u->fd, iov->iov_base, iov->iov_len);
+#endif
+
+        if(result > 0) {
+            shift_iov(&iov, &iovlen, result);
+            bytes_written += result;
+            offset += result;
+        }
+    } while(result > 0 || (result < 0 && errno == EINTR));
+
+    u->common.posix_errno = errno;
+
+#if !defined(HAVE_PWRITEV) && !defined(HAVE_PWRITE)
+    if(result >= 0) {
+        if(lseek(u->fd, original_position, SEEK_SET) < 0) {
+            u->common.posix_errno = errno;
+            return -1;
+        }
+    }
+#endif
+
+    if(result == 0 && bytes_written > 0) {
+        return bytes_written;
+    }
+
+    return result;
+}
+
+int efile_seek(efile_data_t *d, enum efile_seek_t seek, Sint64 offset, Sint64 *new_position) {
+    efile_unix_t *u = (efile_unix_t*)d;
+    off_t result;
+    int whence;
+
+    switch(seek) {
+        case EFILE_SEEK_BOF: whence = SEEK_SET; break;
+        case EFILE_SEEK_CUR: whence = SEEK_CUR; break;
+        case EFILE_SEEK_EOF: whence = SEEK_END; break;
+        default: ERTS_INTERNAL_ERROR("Invalid seek parameter");
+    }
+
+    result = lseek(u->fd, offset, whence);
+
+    /*
+     * The man page for lseek (on SunOs 5) says:
+     *
+     * "if fildes is a remote file descriptor and offset is negative, lseek()
+     * returns the file pointer even if it is negative."
+     */
+    if(result < 0 && errno == 0) {
+        errno = EINVAL;
+    }
+
+    if(result < 0) {
+        u->common.posix_errno = errno;
+        return 0;
+    }
+
+    (*new_position) = result;
+
+    return 1;
+}
+
+int efile_sync(efile_data_t *d, int data_only) {
+    efile_unix_t *u = (efile_unix_t*)d;
+
+#if defined(HAVE_FDATASYNC) && !defined(__DARWIN__)
+    if(data_only) {
+        if(fdatasync(u->fd) < 0) {
+            u->common.posix_errno = errno;
+            return 0;
+        }
+
+        return 1;
+    }
+#endif
+
+#if defined(__DARWIN__) && defined(F_FULLFSYNC)
+    if(fcntl(u->fd, F_FULLFSYNC) < 0) {
+#else
+    if(fsync(u->fd) < 0) {
+#endif
+        u->common.posix_errno = errno;
+        return 0;
+    }
+
+    return 1;
+}
+
+int efile_advise(efile_data_t *d, Sint64 offset, Sint64 length, enum efile_advise_t advise) {
+    efile_unix_t *u = (efile_unix_t*)d;
+#ifdef HAVE_POSIX_FADVISE
+    int p_advise;
+
+    switch(advise) {
+        case EFILE_ADVISE_NORMAL: p_advise = POSIX_FADV_NORMAL; break;
+        case EFILE_ADVISE_RANDOM: p_advise = POSIX_FADV_RANDOM; break;
+        case EFILE_ADVISE_SEQUENTIAL: p_advise = POSIX_FADV_SEQUENTIAL; break;
+        case EFILE_ADVISE_WILL_NEED: p_advise = POSIX_FADV_WILLNEED; break;
+        case EFILE_ADVISE_DONT_NEED: p_advise = POSIX_FADV_DONTNEED; break;
+        case EFILE_ADVISE_NO_REUSE: p_advise = POSIX_FADV_NOREUSE; break;
+        default:
+            u->common.posix_errno = EINVAL;
+            return 0;
+    }
+
+    if(posix_fadvise(u->fd, offset, length, p_advise) < 0) {
+        u->common.posix_errno = errno;
+        return 0;
+    }
+
+    return 1;
+#else
+    /* We'll pretend to support this syscall as it's only a recommendation even
+     * on systems that do support it. */
+    return 1;
+#endif
+}
+
+int efile_allocate(efile_data_t *d, Sint64 offset, Sint64 length) {
+    efile_unix_t *u = (efile_unix_t*)d;
+    int ret = -1;
+
+    /* We prefer OS-specific methods, but fall back to posix_fallocate on
+     * failure. It's unclear whether this has any practical benefit on
+     * modern systems, but the old driver did it. */
+
+#if defined(HAVE_FALLOCATE)
+    /* Linux-specific */
+    do {
+        ret = fallocate(u->fd, FALLOC_FL_KEEP_SIZE, offset, length);
+    } while(ret < 0 && errno == EINTR);
+#elif defined(F_PREALLOCATE)
+    /* Mac-specific */
+    fstore_t fs = {};
+
+    fs.fst_flags = F_ALLOCATECONTIG;
+    fs.fst_posmode = F_VOLPOSMODE;
+    fs.fst_offset = offset;
+    fs.fst_length = length;
+
+    ret = fcntl(u->fd, F_PREALLOCATE, &fs);
+    if(ret < 0) {
+        fs.fst_flags = F_ALLOCATEALL;
+        ret = fcntl(u->fd, F_PREALLOCATE, &fs);
+    }
+#elif !defined(HAVE_POSIX_FALLOCATE)
+    u->common.posix_errno = ENOTSUP;
+    return 0;
+#endif
+
+#ifdef HAVE_POSIX_FALLOCATE
+    if(ret < 0) {
+        do {
+            ret = posix_fallocate(u->fd, offset, length);
+
+            /* On Linux and Solaris for example, posix_fallocate() returns a
+             * positive error number on error and it does not set errno. On
+             * FreeBSD however (9.0 at least), it returns -1 on error and it
+             * sets errno. */
+            if (ret > 0) {
+                errno = ret;
+                ret = -1;
+            }
+        } while(ret < 0 && errno == EINTR);
+    }
+#endif
+
+    if(ret < 0) {
+        u->common.posix_errno = errno;
+        return 0;
+    }
+
+    return 1;
+}
+
+int efile_truncate(efile_data_t *d) {
+    efile_unix_t *u = (efile_unix_t*)d;
+    off_t offset;
+
+    offset = lseek(u->fd, 0, SEEK_CUR);
+
+    if(offset < 0) {
+        u->common.posix_errno = errno;
+        return 0;
+    }
+
+    if(ftruncate(u->fd, offset) < 0) {
+        u->common.posix_errno = errno;
+        return 0;
+    }
+
+    return 1;
+}
+
+posix_errno_t efile_read_info(const efile_path_t *path, int follow_links, efile_fileinfo_t *result) {
+    struct stat data;
+
+    if(follow_links) {
+        if(stat((const char*)path->data, &data) < 0) {
+            return errno;
+        }
+    } else {
+        if(lstat((const char*)path->data, &data) < 0) {
+            return errno;
+        }
+    }
+
+    if(S_ISCHR(data.st_mode) || S_ISBLK(data.st_mode)) {
+        result->type = EFILE_FILETYPE_DEVICE;
+    } else if(S_ISDIR(data.st_mode)) {
+        result->type = EFILE_FILETYPE_DIRECTORY;
+    } else if(S_ISREG(data.st_mode)) {
+        result->type = EFILE_FILETYPE_REGULAR;
+    } else if(S_ISLNK(data.st_mode)) {
+        result->type = EFILE_FILETYPE_SYMLINK;
+    } else {
+        result->type = EFILE_FILETYPE_OTHER;
+    }
+
+    result->a_time = (Sint64)data.st_atime;
+    result->m_time = (Sint64)data.st_mtime;
+    result->c_time = (Sint64)data.st_ctime;
+    result->size = data.st_size;
+
+    result->major_device = data.st_dev;
+    result->minor_device = data.st_rdev;
+    result->links = data.st_nlink;
+    result->inode = data.st_ino;
+    result->mode = data.st_mode;
+    result->uid = data.st_uid;
+    result->gid = data.st_gid;
+
+#ifndef NO_ACCESS
+    result->access = EFILE_ACCESS_NONE;
+
+    if(access((const char*)path->data, R_OK) == 0) {
+        result->access |= EFILE_ACCESS_READ;
+    }
+    if(access((const char*)path->data, W_OK) == 0) {
+        result->access |= EFILE_ACCESS_WRITE;
+    }
+#else
+    /* Just look at read/write access for owner. */
+    result->access = ((data.st_mode >> 6) & 07) >> 1;
+#endif
+
+    return 0;
+}
+
+posix_errno_t efile_set_permissions(const efile_path_t *path, Uint32 permissions) {
+    const mode_t MUTABLE_MODES = (S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO);
+    mode_t new_modes = permissions & MUTABLE_MODES;
+
+    if(chmod((const char*)path->data, new_modes) < 0) {
+        new_modes &= ~(S_ISUID | S_ISGID);
+
+        if (chmod((const char*)path->data, new_modes) < 0) {
+            return errno;
+        }
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_set_owner(const efile_path_t *path, Uint32 owner, Uint32 group) {
+    if(chown((const char*)path->data, owner, group) < 0) {
+        return errno;
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_set_time(const efile_path_t *path, Sint64 a_time, Sint64 m_time, Sint64 c_time) {
+    struct utimbuf tval;
+
+    tval.actime = (time_t)a_time;
+    tval.modtime = (time_t)m_time;
+
+    (void)c_time;
+
+    if(utime((const char*)path->data, &tval) < 0) {
+        return errno;
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_read_link(ErlNifEnv *env, const efile_path_t *path, ERL_NIF_TERM *result) {
+    ErlNifBinary result_bin;
+
+    if(!enif_alloc_binary(256, &result_bin)) {
+        return ENOMEM;
+    }
+
+    for(;;) {
+        ssize_t bytes_copied;
+
+        bytes_copied = readlink((const char*)path->data, (char*)result_bin.data,
+            result_bin.size);
+
+        if(bytes_copied <= 0) {
+            posix_errno_t saved_errno = errno;
+            enif_release_binary(&result_bin);
+            return saved_errno;
+        } else if(bytes_copied < result_bin.size) {
+            if(!enif_realloc_binary(&result_bin, bytes_copied)) {
+                enif_release_binary(&result_bin);
+                return ENOMEM;
+            }
+
+            (*result) = enif_make_binary(env, &result_bin);
+
+            return 0;
+        }
+
+        /* The result didn't fit into the buffer, so we'll try again with a
+         * larger one. */
+
+        if(!enif_realloc_binary(&result_bin, result_bin.size * 2)) {
+            enif_release_binary(&result_bin);
+            return ENOMEM;
+        }
+    }
+}
+
+static int is_ignored_name(int name_length, const char *name) {
+    if(name_length == 1 && name[0] == '.') {
+        return 1;
+    } else if(name_length == 2 && memcmp(name, "..", 2) == 0) {
+        return 1;
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_list_dir(ErlNifEnv *env, const efile_path_t *path, ERL_NIF_TERM *result) {
+    ERL_NIF_TERM list_head;
+
+    struct dirent *dir_entry;
+    DIR *dir_stream;
+
+    dir_stream = opendir((const char*)path->data);
+    if(dir_stream == NULL) {
+        posix_errno_t saved_errno = errno;
+        *result = enif_make_list(env, 0);
+        return saved_errno;
+    }
+
+    list_head = enif_make_list(env, 0);
+    dir_entry = readdir(dir_stream);
+
+    while(dir_entry != NULL) {
+        int name_length = strlen(dir_entry->d_name);
+
+        if(!is_ignored_name(name_length, dir_entry->d_name)) {
+            unsigned char *name_bytes;
+            ERL_NIF_TERM name_term;
+
+            name_bytes = enif_make_new_binary(env, name_length, &name_term);
+            sys_memcpy(name_bytes, dir_entry->d_name, name_length);
+
+            list_head = enif_make_list_cell(env, name_term, list_head);
+        }
+
+        dir_entry = readdir(dir_stream);
+    }
+
+    (*result) = list_head;
+    closedir(dir_stream);
+
+    return 0;
+}
+
+posix_errno_t efile_rename(const efile_path_t *old_path, const efile_path_t *new_path) {
+    if(rename((const char*)old_path->data, (const char*)new_path->data) < 0) {
+        if(errno == ENOTEMPTY) {
+            return EEXIST;
+        }
+
+        if(strcmp((const char*)old_path->data, "/") == 0) {
+            /* Alpha reports renaming / as EBUSY and Linux reports it as EACCES
+             * instead of EINVAL.*/
+             return EINVAL;
+        }
+
+        return errno;
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_make_hard_link(const efile_path_t *existing_path, const efile_path_t *new_path) {
+    if(link((const char*)existing_path->data, (const char*)new_path->data) < 0) {
+        return errno;
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_make_soft_link(const efile_path_t *existing_path, const efile_path_t *new_path) {
+    if(symlink((const char*)existing_path->data, (const char*)new_path->data) < 0) {
+        return errno;
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_make_dir(const efile_path_t *path) {
+#ifdef NO_MKDIR_MODE
+    if(mkdir((const char*)path->data) < 0) {
+#else
+    if(mkdir((const char*)path->data, DIR_MODE) < 0) {
+#endif
+        return errno;
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_del_file(const efile_path_t *path) {
+    if(unlink((const char*)path->data) < 0) {
+        /* Linux sets the wrong error code. */
+        if(errno == EISDIR) {
+            return EPERM;
+        }
+
+        return errno;
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_del_dir(const efile_path_t *path) {
+    if(rmdir((const char*)path->data) < 0) {
+        posix_errno_t saved_errno = errno;
+
+        if(saved_errno == ENOTEMPTY) {
+            saved_errno = EEXIST;
+        }
+
+        /* The error code might be wrong if we're trying to delete the current
+         * directory. */
+        if(saved_errno == EEXIST) {
+            struct stat path_stat, cwd_stat;
+            int has_stat;
+
+            has_stat = (stat((const char*)path->data, &path_stat) == 0);
+            has_stat &= (stat(".", &cwd_stat) == 0);
+
+            if(has_stat && path_stat.st_ino == cwd_stat.st_ino) {
+                if(path_stat.st_dev == cwd_stat.st_dev) {
+                    return EINVAL;
+                }
+            }
+        }
+
+        return saved_errno;
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_set_cwd(const efile_path_t *path) {
+    if(chdir((const char*)path->data) < 0) {
+        return errno;
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_get_device_cwd(ErlNifEnv *env, int device_index, ERL_NIF_TERM *result) {
+    (void)device_index;
+    (void)result;
+    (void)env;
+
+    return ENOTSUP;
+}
+
+posix_errno_t efile_get_cwd(ErlNifEnv *env, ERL_NIF_TERM *result) {
+    ErlNifBinary result_bin;
+    size_t bytes_copied;
+
+    if(!enif_alloc_binary(256, &result_bin)) {
+        return ENOMEM;
+    }
+
+    while(getcwd((char*)result_bin.data, result_bin.size) == NULL) {
+        posix_errno_t saved_errno = errno;
+
+        if(saved_errno != ERANGE) {
+            enif_release_binary(&result_bin);
+            return saved_errno;
+        } else {
+            if(!enif_realloc_binary(&result_bin, result_bin.size * 2)) {
+                enif_release_binary(&result_bin);
+                return ENOMEM;
+            }
+        }
+    }
+
+    /* getcwd(2) guarantees null-termination. */
+    bytes_copied = strlen((const char*)result_bin.data);
+
+    if(!enif_realloc_binary(&result_bin, bytes_copied)) {
+        enif_release_binary(&result_bin);
+        return ENOMEM;
+    }
+
+    (*result) = enif_make_binary(env, &result_bin);
+
+    return 0;
+}
+
+posix_errno_t efile_altname(ErlNifEnv *env, const efile_path_t *path, ERL_NIF_TERM *result) {
+    (void)path;
+    (void)result;
+
+    return ENOTSUP;
+}
diff --git a/erts/emulator/nifs/win32/win_prim_file.c b/erts/emulator/nifs/win32/win_prim_file.c
new file mode 100644
index 0000000000..9b79182f2c
--- /dev/null
+++ b/erts/emulator/nifs/win32/win_prim_file.c
@@ -0,0 +1,1428 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson 2017. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "erl_nif.h"
+#include "config.h"
+#include "sys.h"
+
+#include "prim_file_nif.h"
+
+#include <windows.h>
+#include <strsafe.h>
+#include <wchar.h>
+
+#define IS_SLASH(a)  ((a) == L'\\' || (a) == L'/')
+
+#define FILE_SHARE_FLAGS (FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE)
+
+#define LP_PREFIX L"\\\\?\\"
+#define LP_PREFIX_SIZE (sizeof(LP_PREFIX) - sizeof(WCHAR))
+#define LP_PREFIX_LENGTH (LP_PREFIX_SIZE / sizeof(WCHAR))
+
+#define PATH_LENGTH(path) (path->size / sizeof(WCHAR) - 1)
+
+#define ASSERT_PATH_FORMAT(path) \
+    do { \
+        ASSERT(PATH_LENGTH(path) >= 4 && \
+            !memcmp(path->data, LP_PREFIX, LP_PREFIX_SIZE)); \
+        ASSERT(PATH_LENGTH(path) == wcslen((WCHAR*)path->data)); \
+    } while(0)
+
+#define TICKS_PER_SECOND (10000000ULL)
+#define EPOCH_DIFFERENCE (11644473600LL)
+
+#define FILETIME_TO_EPOCH(epoch, ft) \
+    do { \
+        ULARGE_INTEGER ull; \
+        ull.LowPart  = (ft).dwLowDateTime; \
+        ull.HighPart = (ft).dwHighDateTime; \
+        (epoch) = ((ull.QuadPart / TICKS_PER_SECOND) - EPOCH_DIFFERENCE); \
+    } while(0)
+
+#define EPOCH_TO_FILETIME(ft, epoch) \
+    do { \
+        ULARGE_INTEGER ull; \
+        ull.QuadPart = (((epoch) + EPOCH_DIFFERENCE) * TICKS_PER_SECOND); \
+        (ft).dwLowDateTime = ull.LowPart; \
+        (ft).dwHighDateTime = ull.HighPart; \
+    } while(0)
+
+typedef struct {
+    efile_data_t common;
+    HANDLE handle;
+} efile_win_t;
+
+static int windows_to_posix_errno(DWORD last_error);
+
+static int has_invalid_null_termination(const ErlNifBinary *path) {
+    const WCHAR *null_pos, *end_pos;
+
+    null_pos = wmemchr((const WCHAR*)path->data, L'\0', path->size);
+    end_pos = (const WCHAR*)&path->data[path->size] - 1;
+
+    if(null_pos == NULL) {
+        return 1;
+    }
+
+    /* prim_file:internal_name2native sometimes feeds us data that is "doubly"
+     * NUL-terminated, so we'll accept any number of trailing NULs so long as
+     * they aren't interrupted by anything else. */
+    while(null_pos < end_pos && (*null_pos) == L'\0') {
+        null_pos++;
+    }
+
+    return null_pos != end_pos;
+}
+
+static posix_errno_t get_full_path(ErlNifEnv *env, WCHAR *input, efile_path_t *result) {
+    DWORD maximum_length, actual_length;
+    int add_long_prefix;
+
+    maximum_length = GetFullPathNameW(input, 0, NULL, NULL);
+    add_long_prefix = 0;
+
+    if(maximum_length == 0) {
+        /* POSIX doesn't have the concept of a "path error" in the same way
+         * Windows does, so we'll return ENOENT since that's what most POSIX
+         * APIs would return if they were fed such garbage. */
+        return ENOENT;
+    }
+
+    maximum_length += LP_PREFIX_LENGTH;
+
+    if(!enif_alloc_binary(maximum_length * sizeof(WCHAR), result)) {
+        return ENOMEM;
+    }
+
+    actual_length = GetFullPathNameW(input, maximum_length, (WCHAR*)result->data, NULL);
+
+    if(actual_length < maximum_length) {
+        int has_long_path_prefix;
+        WCHAR *path_start;
+
+        /* Make sure we have a long-path prefix; GetFullPathNameW only adds one
+         * if the path is relative. */
+        has_long_path_prefix = actual_length >= LP_PREFIX_LENGTH &&
+            !sys_memcmp(result->data, LP_PREFIX, LP_PREFIX_SIZE);
+
+        if(!has_long_path_prefix) {
+            sys_memmove(result->data + LP_PREFIX_SIZE, result->data,
+                (actual_length + 1) * sizeof(WCHAR));
+            sys_memcpy(result->data, LP_PREFIX, LP_PREFIX_SIZE);
+            actual_length += LP_PREFIX_LENGTH;
+        }
+
+        path_start = (WCHAR*)result->data;
+
+        /* We're removing trailing slashes since quite a few APIs refuse to
+         * work with them, and none require them. We only check the last
+         * character since GetFullPathNameW folds slashes together. */
+        if(IS_SLASH(path_start[actual_length - 1])) {
+            if(path_start[actual_length - 2] != L':') {
+                path_start[actual_length - 1] = L'\0';
+                actual_length--;
+            }
+        }
+
+        if(!enif_realloc_binary(result, (actual_length + 1) * sizeof(WCHAR))) {
+            enif_release_binary(result);
+            return ENOMEM;
+        }
+
+        enif_make_binary(env, result);
+        return 0;
+    }
+
+    /* We may end up here if the current directory changes to something longer
+     * between/during GetFullPathName. There's nothing sensible we can do about
+     * this. */
+
+    enif_release_binary(result);
+
+    return EINVAL;
+}
+
+posix_errno_t efile_marshal_path(ErlNifEnv *env, ERL_NIF_TERM path, efile_path_t *result) {
+    ErlNifBinary raw_path;
+
+    if(!enif_inspect_binary(env, path, &raw_path)) {
+        return EINVAL;
+    } else if(raw_path.size % sizeof(WCHAR)) {
+        return EINVAL;
+    }
+
+    if(has_invalid_null_termination(&raw_path)) {
+        return EINVAL;
+    }
+
+    return get_full_path(env, (WCHAR*)raw_path.data, result);
+}
+
+ERL_NIF_TERM efile_get_handle(ErlNifEnv *env, efile_data_t *d) {
+    efile_win_t *w = (efile_win_t*)d;
+
+    ERL_NIF_TERM result;
+    unsigned char *bits;
+
+    bits = enif_make_new_binary(env, sizeof(w->handle), &result);
+    memcpy(bits, &w->handle, sizeof(w->handle));
+
+    return result;
+}
+
+/** @brief Converts a native path to the preferred form in "erlang space,"
+ * without path-prefixes, forward-slashes, or NUL terminators. */
+static int normalize_path_result(ErlNifBinary *path) {
+    WCHAR *path_iterator, *path_start, *path_end;
+    int length;
+
+    path_start = (WCHAR*)path->data;
+    length = wcslen(path_start);
+
+    ASSERT(length < path->size / sizeof(WCHAR));
+
+    /* Get rid of the long-path prefix, if present. */
+    if(length >= LP_PREFIX_LENGTH) {
+        if(!sys_memcmp(path_start, LP_PREFIX, LP_PREFIX_SIZE)) {
+            length -= LP_PREFIX_LENGTH;
+
+            sys_memmove(path_start, &path_start[LP_PREFIX_LENGTH],
+                length * sizeof(WCHAR));
+        }
+    }
+
+    path_end = &path_start[length];
+    path_iterator = path_start;
+
+    /* Convert drive letters to lowercase, if present. */
+    if(length >= 2 && path_start[1] == L':') {
+        WCHAR drive_letter = path_start[0];
+
+        if(drive_letter >= L'A' && drive_letter <= L'Z') {
+            path_start[0] = drive_letter - L'A' + L'a';
+        }
+    }
+
+    while(path_iterator < path_end) {
+        if(*path_iterator == L'\\') {
+            *path_iterator = L'/';
+        }
+
+        path_iterator++;
+    }
+
+    /* Truncate the result to its actual length; we don't want to include the
+     * NUL terminator. */
+    return enif_realloc_binary(path, length * sizeof(WCHAR));
+}
+
+/* @brief Checks whether all the given attributes are set on the object at the
+ * given path. Note that it assumes false on errors. */
+static int has_file_attributes(const efile_path_t *path, DWORD mask) {
+    DWORD attributes = GetFileAttributesW((WCHAR*)path->data);
+
+    if(attributes == INVALID_FILE_ATTRIBUTES) {
+        return 0;
+    }
+
+    return !!((attributes & mask) == mask);
+}
+
+static int is_ignored_name(int name_length, const WCHAR *name) {
+    if(name_length == 1 && name[0] == L'.') {
+        return 1;
+    } else if(name_length == 2 && !sys_memcmp(name, L"..", 2 * sizeof(WCHAR))) {
+        return 1;
+    }
+
+    return 0;
+}
+
+static int get_drive_number(const efile_path_t *path) {
+    const WCHAR *path_start;
+    int length;
+
+    ASSERT_PATH_FORMAT(path);
+
+    path_start = (WCHAR*)path->data + LP_PREFIX_LENGTH;
+    length = PATH_LENGTH(path) - LP_PREFIX_LENGTH;
+
+    if(length >= 2 && path_start[1] == L':') {
+        WCHAR drive_letter = path_start[0];
+
+        if(drive_letter >= L'A' && drive_letter <= L'Z') {
+            return drive_letter - L'A' + 1;
+        } else if(drive_letter >= L'a' && drive_letter <= L'z') {
+            return drive_letter - L'a' + 1;
+        }
+    }
+
+    return -1;
+}
+
+/* @brief Checks whether two *paths* are on the same mount point; they don't
+ * have to refer to existing or accessible files/directories. */
+static int has_same_mount_point(const efile_path_t *path_a, const efile_path_t *path_b) {
+    WCHAR *mount_a, *mount_b;
+    int result = 0;
+
+    mount_a = enif_alloc(path_a->size);
+    mount_b = enif_alloc(path_b->size);
+
+    if(mount_a != NULL && mount_b != NULL) {
+        int length_a, length_b;
+
+        length_a = PATH_LENGTH(path_a);
+        length_b = PATH_LENGTH(path_b);
+
+        if(GetVolumePathNameW((WCHAR*)path_a->data, mount_a, length_a)) {
+            ASSERT(wcslen(mount_a) <= length_a);
+
+            if(GetVolumePathNameW((WCHAR*)path_b->data, mount_b, length_b)) {
+                ASSERT(wcslen(mount_b) <= length_b);
+
+                result = !_wcsicmp(mount_a, mount_b);
+            }
+        }
+    }
+
+    if(mount_b != NULL) {
+        enif_free(mount_b);
+    }
+
+    if(mount_a != NULL) {
+        enif_free(mount_a);
+    }
+
+    return result;
+}
+
+/* Mirrors the PathIsRootW function of the shell API, but doesn't choke on
+ * paths longer than MAX_PATH. */
+static int is_path_root(const efile_path_t *path) {
+    const WCHAR *path_start, *path_end;
+    int length;
+
+    ASSERT_PATH_FORMAT(path);
+
+    path_start = (WCHAR*)path->data + LP_PREFIX_LENGTH;
+    length = PATH_LENGTH(path) - LP_PREFIX_LENGTH;
+
+    path_end = &path_start[length];
+
+    if(length == 1) {
+        /* A single \ refers to the root of the current working directory. */
+        return IS_SLASH(path_start[0]);
+    } else if(length == 3 && iswalpha(path_start[0]) && path_start[1] == L':') {
+        /* Drive letter. */
+        return IS_SLASH(path_start[2]);
+    } else if(length >= 4) {
+        /* Check whether we're a UNC root, eg. \\server, \\server\share */
+        const WCHAR *path_iterator;
+
+        if(!IS_SLASH(path_start[0]) || !IS_SLASH(path_start[1])) {
+            return 0;
+        }
+
+        path_iterator = path_start + 2;
+
+        /* Slide to the slash between the server and share names, if present. */
+        while(path_iterator < path_end && !IS_SLASH(*path_iterator)) {
+            path_iterator++;
+        }
+
+        /* Slide past the end of the string, stopping at the first slash we
+         * encounter. */
+        do {
+            path_iterator++;
+        }  while(path_iterator < path_end && !IS_SLASH(*path_iterator));
+
+        /* If we're past the end of the string and it didnt't end with a slash,
+         * then we're a root path. */
+        return path_iterator >= path_end && !IS_SLASH(path_start[length - 1]);
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_open(const efile_path_t *path, enum efile_modes_t modes,
+        ErlNifResourceType *nif_type, efile_data_t **d) {
+
+    DWORD attributes, access_flags, open_mode;
+    HANDLE handle;
+
+    ASSERT_PATH_FORMAT(path);
+
+    access_flags = 0;
+    open_mode = 0;
+
+    if(modes & EFILE_MODE_READ && !(modes & EFILE_MODE_WRITE)) {
+        access_flags = GENERIC_READ;
+        open_mode = OPEN_EXISTING;
+    } else if(modes & EFILE_MODE_WRITE && !(modes & EFILE_MODE_READ)) {
+        access_flags = GENERIC_WRITE;
+        open_mode = CREATE_ALWAYS;
+    } else if(modes & EFILE_MODE_READ_WRITE) {
+        access_flags = GENERIC_READ | GENERIC_WRITE;
+        open_mode = OPEN_ALWAYS;
+    } else {
+        return EINVAL;
+    }
+
+    if(modes & EFILE_MODE_APPEND) {
+        access_flags |= FILE_APPEND_DATA;
+        open_mode = OPEN_ALWAYS;
+    }
+
+    if(modes & EFILE_MODE_EXCLUSIVE) {
+        open_mode = CREATE_NEW;
+    }
+
+    if(modes & EFILE_MODE_SYNC) {
+        attributes = FILE_FLAG_WRITE_THROUGH;
+    } else {
+        attributes = FILE_ATTRIBUTE_NORMAL;
+    }
+
+    handle = CreateFileW((WCHAR*)path->data, access_flags,
+        FILE_SHARE_FLAGS, NULL, open_mode, attributes, NULL);
+
+    if(handle != INVALID_HANDLE_VALUE) {
+        efile_win_t *w;
+
+        w = (efile_win_t*)enif_alloc_resource(nif_type, sizeof(efile_win_t));
+        w->handle = handle;
+
+        EFILE_INIT_RESOURCE(&w->common, modes);
+        (*d) = &w->common;
+
+        return 0;
+    } else {
+        DWORD last_error = GetLastError();
+
+        /* Rewrite all failures on directories to EISDIR to match the old
+         * driver. */
+        if(has_file_attributes(path, FILE_ATTRIBUTE_DIRECTORY)) {
+            return EISDIR;
+        }
+
+        return windows_to_posix_errno(last_error);
+    }
+}
+
+int efile_close(efile_data_t *d) {
+    efile_win_t *w = (efile_win_t*)d;
+    HANDLE handle;
+
+    ASSERT(erts_atomic32_read_nob(&d->state) == EFILE_STATE_CLOSED);
+    ASSERT(w->handle != INVALID_HANDLE_VALUE);
+
+    handle = w->handle;
+    w->handle = INVALID_HANDLE_VALUE;
+
+    if(!CloseHandle(handle)) {
+        w->common.posix_errno = windows_to_posix_errno(GetLastError());
+        return 0;
+    }
+
+    return 1;
+}
+
+static void shift_overlapped(OVERLAPPED *overlapped, DWORD shift) {
+    LARGE_INTEGER offset;
+
+    ASSERT(shift >= 0);
+
+    offset.HighPart = overlapped->OffsetHigh;
+    offset.LowPart = overlapped->Offset;
+
+    /* ~(Uint64)0 is a magic value ("append to end of file") which needs to be
+     * preserved. Other positions resulting in overflow would have errored out
+     * just prior to this point. */
+    if(offset.QuadPart != ERTS_UINT64_MAX) {
+        offset.QuadPart += shift;
+    }
+
+    /* All unused fields must be zeroed for the next call. */
+    sys_memset(overlapped, 0, sizeof(*overlapped));
+    overlapped->OffsetHigh = offset.HighPart;
+    overlapped->Offset = offset.LowPart;
+}
+
+static void shift_iov(SysIOVec **iov, int *iovlen, DWORD shift) {
+    SysIOVec *head_vec = (*iov);
+
+    ASSERT(shift >= 0);
+
+    while(shift > 0) {
+        ASSERT(head_vec < &(*iov)[*iovlen]);
+
+        if(shift < head_vec->iov_len) {
+            head_vec->iov_base = (char*)head_vec->iov_base + shift;
+            head_vec->iov_len -= shift;
+            break;
+        } else {
+            shift -= head_vec->iov_len;
+            head_vec++;
+        }
+    }
+
+    (*iovlen) -= head_vec - (*iov);
+    (*iov) = head_vec;
+}
+
+typedef BOOL (WINAPI *io_op_t)(HANDLE, LPVOID, DWORD, LPDWORD, LPOVERLAPPED);
+
+static Sint64 internal_sync_io(efile_win_t *w, io_op_t operation,
+        SysIOVec *iov, int iovlen, OVERLAPPED *overlapped) {
+
+    Sint64 bytes_processed = 0;
+
+    for(;;) {
+        DWORD block_bytes_processed, last_error;
+        BOOL succeeded;
+
+        if(iovlen < 1) {
+            return bytes_processed;
+        }
+
+        succeeded = operation(w->handle, iov->iov_base, iov->iov_len,
+            &block_bytes_processed, overlapped);
+        last_error = GetLastError();
+
+        if(!succeeded && (last_error != ERROR_HANDLE_EOF)) {
+            w->common.posix_errno = windows_to_posix_errno(last_error);
+            return -1;
+        } else if(block_bytes_processed == 0) {
+            /* EOF */
+            return bytes_processed;
+        }
+
+        if(overlapped != NULL) {
+            shift_overlapped(overlapped, block_bytes_processed);
+        }
+
+        shift_iov(&iov, &iovlen, block_bytes_processed);
+
+        bytes_processed += block_bytes_processed;
+    }
+}
+
+Sint64 efile_readv(efile_data_t *d, SysIOVec *iov, int iovlen) {
+    efile_win_t *w = (efile_win_t*)d;
+
+    return internal_sync_io(w, ReadFile, iov, iovlen, NULL);
+}
+
+Sint64 efile_writev(efile_data_t *d, SysIOVec *iov, int iovlen) {
+    efile_win_t *w = (efile_win_t*)d;
+
+    OVERLAPPED __overlapped, *overlapped;
+    Uint64 bytes_written;
+
+    if(w->common.modes & EFILE_MODE_APPEND) {
+        overlapped = &__overlapped;
+
+        sys_memset(overlapped, 0, sizeof(*overlapped));
+        overlapped->OffsetHigh = 0xFFFFFFFF;
+        overlapped->Offset = 0xFFFFFFFF;
+    } else {
+        overlapped = NULL;
+    }
+
+    return internal_sync_io(w, WriteFile, iov, iovlen, overlapped);
+}
+
+Sint64 efile_preadv(efile_data_t *d, Sint64 offset, SysIOVec *iov, int iovlen) {
+    efile_win_t *w = (efile_win_t*)d;
+
+    OVERLAPPED overlapped;
+
+    sys_memset(&overlapped, 0, sizeof(overlapped));
+    overlapped.OffsetHigh = (offset >> 32) & 0xFFFFFFFF;
+    overlapped.Offset = offset & 0xFFFFFFFF;
+
+    return internal_sync_io(w, ReadFile, iov, iovlen, &overlapped);
+}
+
+Sint64 efile_pwritev(efile_data_t *d, Sint64 offset, SysIOVec *iov, int iovlen) {
+    efile_win_t *w = (efile_win_t*)d;
+
+    OVERLAPPED overlapped;
+
+    sys_memset(&overlapped, 0, sizeof(overlapped));
+    overlapped.OffsetHigh = (offset >> 32) & 0xFFFFFFFF;
+    overlapped.Offset = offset & 0xFFFFFFFF;
+
+    return internal_sync_io(w, WriteFile, iov, iovlen, &overlapped);
+}
+
+int efile_seek(efile_data_t *d, enum efile_seek_t seek, Sint64 offset, Sint64 *new_position) {
+    efile_win_t *w = (efile_win_t*)d;
+
+    LARGE_INTEGER large_offset, large_new_position;
+    DWORD whence;
+
+    switch(seek) {
+        case EFILE_SEEK_BOF: whence = FILE_BEGIN; break;
+        case EFILE_SEEK_CUR: whence = FILE_CURRENT; break;
+        case EFILE_SEEK_EOF: whence = FILE_END; break;
+        default: ERTS_INTERNAL_ERROR("Invalid seek parameter");
+    }
+
+    large_offset.QuadPart = offset;
+
+    if(!SetFilePointerEx(w->handle, large_offset, &large_new_position, whence)) {
+        w->common.posix_errno = windows_to_posix_errno(GetLastError());
+        return 0;
+    }
+
+    (*new_position) = large_new_position.QuadPart;
+
+    return 1;
+}
+
+int efile_sync(efile_data_t *d, int data_only) {
+    efile_win_t *w = (efile_win_t*)d;
+
+    /* Windows doesn't support data-only syncing. */
+    (void)data_only;
+
+    if(!FlushFileBuffers(w->handle)) {
+        w->common.posix_errno = windows_to_posix_errno(GetLastError());
+        return 0;
+    }
+
+    return 1;
+}
+
+int efile_advise(efile_data_t *d, Sint64 offset, Sint64 length, enum efile_advise_t advise) {
+    /* Windows doesn't support this, but we'll pretend it does since the call
+     * is only a recommendation even on systems that do support it. */
+
+    (void)d;
+    (void)offset;
+    (void)length;
+    (void)advise;
+
+    return 1;
+}
+
+int efile_allocate(efile_data_t *d, Sint64 offset, Sint64 length) {
+    efile_win_t *w = (efile_win_t*)d;
+
+    (void)d;
+    (void)offset;
+    (void)length;
+
+    w->common.posix_errno = ENOTSUP;
+
+    return 0;
+}
+
+int efile_truncate(efile_data_t *d) {
+    efile_win_t *w = (efile_win_t*)d;
+
+    if(!SetEndOfFile(w->handle)) {
+        w->common.posix_errno = windows_to_posix_errno(GetLastError());
+        return 0;
+    }
+
+    return 1;
+}
+
+static int is_executable_file(const efile_path_t *path) {
+    /* We're using the file extension in order to be quirks-compliant with the
+     * old driver, which never bothered to check the actual permissions. We
+     * could easily do so now (cf. GetNamedSecurityInfo) but the execute
+     * permission is only relevant for files that are started with the default
+     * loader, and batch files run just fine with read permission alone. */
+
+    int length = PATH_LENGTH(path);
+
+    if(length >= 4) {
+        const WCHAR *last_four = &((WCHAR*)path->data)[length - 4];
+
+        if (!_wcsicmp(last_four, L".exe") ||
+            !_wcsicmp(last_four, L".cmd") ||
+            !_wcsicmp(last_four, L".bat") ||
+            !_wcsicmp(last_four, L".com")) {
+            return 1;
+        }
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_read_info(const efile_path_t *path, int follow_links, efile_fileinfo_t *result) {
+    BY_HANDLE_FILE_INFORMATION native_file_info;
+    DWORD attributes;
+
+    sys_memset(&native_file_info, 0, sizeof(native_file_info));
+
+    attributes = GetFileAttributesW((WCHAR*)path->data);
+
+    if(attributes == INVALID_FILE_ATTRIBUTES) {
+        DWORD last_error = GetLastError();
+
+        /* Querying a network share root fails with ERROR_BAD_NETPATH, so we'll
+         * fake it as a directory just like local roots. */
+        if(!is_path_root(path) || last_error != ERROR_BAD_NETPATH) {
+            return windows_to_posix_errno(last_error);
+        }
+
+        attributes = FILE_ATTRIBUTE_DIRECTORY;
+    } else if(is_path_root(path)) {
+        /* Local (or mounted) roots can be queried with GetFileAttributesW but
+         * lack support for GetFileInformationByHandle, so we'll skip that
+         * part. */
+    } else {
+        HANDLE handle;
+
+        if(follow_links && (attributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
+            posix_errno_t posix_errno;
+            efile_path_t resolved_path;
+
+            posix_errno = internal_read_link(path, &resolved_path);
+
+            if(posix_errno != 0) {
+                return posix_errno;
+            }
+
+            return efile_read_info(&resolved_path, 0, result);
+        }
+
+        handle = CreateFileW((const WCHAR*)path->data, GENERIC_READ,
+            FILE_SHARE_FLAGS, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS,
+            NULL);
+
+        /* The old driver never cared whether this succeeded. */
+        if(handle != INVALID_HANDLE_VALUE) {
+            GetFileInformationByHandle(handle, &native_file_info);
+            CloseHandle(handle);
+        }
+
+        FILETIME_TO_EPOCH(result->m_time, native_file_info.ftLastWriteTime);
+        FILETIME_TO_EPOCH(result->a_time, native_file_info.ftLastAccessTime);
+        FILETIME_TO_EPOCH(result->c_time, native_file_info.ftCreationTime);
+
+        if(result->m_time == -EPOCH_DIFFERENCE) {
+            /* Default to 1970 just like the old driver. */
+            result->m_time = 0;
+        }
+
+        if(result->a_time == -EPOCH_DIFFERENCE) {
+            result->a_time = result->m_time;
+        }
+
+        if(result->c_time == -EPOCH_DIFFERENCE) {
+            result->c_time = result->m_time;
+        }
+    }
+
+    if(attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
+        result->type = EFILE_FILETYPE_SYMLINK;
+        /* This should be _S_IFLNK, but the old driver always set
+         * non-directories to _S_IFREG. */
+        result->mode |= _S_IFREG;
+    } else if(attributes & FILE_ATTRIBUTE_DIRECTORY) {
+        result->type = EFILE_FILETYPE_DIRECTORY;
+        result->mode |= _S_IFDIR | _S_IEXEC;
+    } else {
+        if(is_executable_file(path)) {
+            result->mode |= _S_IEXEC;
+        }
+
+        result->type = EFILE_FILETYPE_REGULAR;
+        result->mode |= _S_IFREG;
+    }
+
+    if(!(attributes & FILE_ATTRIBUTE_READONLY)) {
+        result->access = EFILE_ACCESS_READ | EFILE_ACCESS_WRITE;
+        result->mode |= _S_IREAD | _S_IWRITE;
+    } else {
+        result->access = EFILE_ACCESS_READ;
+        result->mode |= _S_IREAD;
+    }
+
+    /* Propagate user mode-bits to group/other fields */
+    result->mode |= (result->mode & 0700) >> 3;
+    result->mode |= (result->mode & 0700) >> 6;
+
+    result->size =
+        ((Uint64)native_file_info.nFileSizeHigh << 32ull) |
+        (Uint64)native_file_info.nFileSizeLow;
+
+    result->links = MAX(1, native_file_info.nNumberOfLinks);
+
+    result->major_device = get_drive_number(path);
+    result->minor_device = 0;
+    result->inode = 0;
+    result->uid = 0;
+    result->gid = 0;
+
+    return 0;
+}
+
+posix_errno_t efile_set_permissions(const efile_path_t *path, Uint32 permissions) {
+    DWORD attributes = GetFileAttributesW((WCHAR*)path->data);
+
+    if(attributes == INVALID_FILE_ATTRIBUTES) {
+        return windows_to_posix_errno(GetLastError());
+    }
+
+    if(permissions & _S_IWRITE) {
+        attributes &= ~FILE_ATTRIBUTE_READONLY;
+    } else {
+        attributes |= FILE_ATTRIBUTE_READONLY;
+    }
+
+    if(SetFileAttributesW((WCHAR*)path->data, attributes)) {
+        return 0;
+    }
+
+    return windows_to_posix_errno(GetLastError());
+}
+
+posix_errno_t efile_set_owner(const efile_path_t *path, Uint32 owner, Uint32 group) {
+    (void)path;
+    (void)owner;
+    (void)group;
+
+    return 0;
+}
+
+posix_errno_t efile_set_time(const efile_path_t *path, Sint64 a_time, Sint64 m_time, Sint64 c_time) {
+    FILETIME accessed, modified, created;
+    DWORD last_error, attributes;
+    HANDLE handle;
+
+    attributes = GetFileAttributesW((WCHAR*)path->data);
+
+    if(attributes == INVALID_FILE_ATTRIBUTES) {
+        return windows_to_posix_errno(GetLastError());
+    }
+
+    /* If the file is read-only, we have to make it temporarily writable while
+     * setting new metadata. */
+    if(attributes & FILE_ATTRIBUTE_READONLY) {
+        DWORD without_readonly = attributes & ~FILE_ATTRIBUTE_READONLY;
+
+        if(!SetFileAttributesW((WCHAR*)path->data, without_readonly)) {
+            return windows_to_posix_errno(GetLastError());
+        }
+    }
+
+    EPOCH_TO_FILETIME(modified, m_time);
+    EPOCH_TO_FILETIME(accessed, a_time);
+    EPOCH_TO_FILETIME(created, c_time);
+
+    handle = CreateFileW((WCHAR*)path->data, GENERIC_READ | GENERIC_WRITE,
+        FILE_SHARE_FLAGS, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
+    last_error = GetLastError();
+
+    if(handle != INVALID_HANDLE_VALUE) {
+        if(SetFileTime(handle, &created, &accessed, &modified)) {
+            last_error = ERROR_SUCCESS;
+        } else {
+            last_error = GetLastError();
+        }
+
+        CloseHandle(handle);
+    }
+
+    if(attributes & FILE_ATTRIBUTE_READONLY) {
+        SetFileAttributesW((WCHAR*)path->data, attributes);
+    }
+
+    return windows_to_posix_errno(last_error);
+}
+
+static posix_errno_t internal_read_link(const efile_path_t *path, efile_path_t *result) {
+    DWORD required_length, actual_length;
+    HANDLE link_handle;
+    DWORD last_error;
+
+    link_handle = CreateFileW((WCHAR*)path->data, GENERIC_READ,
+        FILE_SHARE_FLAGS, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
+    last_error = GetLastError();
+
+    if(link_handle == INVALID_HANDLE_VALUE) {
+        return windows_to_posix_errno(last_error);
+    }
+
+    required_length = GetFinalPathNameByHandleW(link_handle, NULL, 0, 0);
+    last_error = GetLastError();
+
+    if(required_length <= 0) {
+        CloseHandle(link_handle);
+        return windows_to_posix_errno(last_error);
+    }
+
+    /* Unlike many other path functions (eg. GetFullPathNameW), this one
+     * includes the NUL terminator in its required length. */
+    if(!enif_alloc_binary(required_length * sizeof(WCHAR), result)) {
+        CloseHandle(link_handle);
+        return ENOMEM;
+    }
+
+    actual_length = GetFinalPathNameByHandleW(link_handle,
+        (WCHAR*)result->data, required_length, 0);
+    last_error = GetLastError();
+
+    CloseHandle(link_handle);
+
+    if(actual_length == 0 || actual_length >= required_length) {
+        enif_release_binary(result);
+        return windows_to_posix_errno(last_error);
+    }
+
+    /* GetFinalPathNameByHandle always prepends with "\\?\" and NUL-terminates,
+     * so we never have to touch-up the resulting path. */
+
+    ASSERT_PATH_FORMAT(result);
+
+    return 0;
+}
+
+posix_errno_t efile_read_link(ErlNifEnv *env, const efile_path_t *path, ERL_NIF_TERM *result) {
+    posix_errno_t posix_errno;
+    ErlNifBinary result_bin;
+    DWORD attributes;
+
+    ASSERT_PATH_FORMAT(path);
+
+    attributes = GetFileAttributesW((WCHAR*)path->data);
+
+    if(attributes == INVALID_FILE_ATTRIBUTES) {
+        return windows_to_posix_errno(GetLastError());
+    } else if(!(attributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
+        return EINVAL;
+    }
+
+    posix_errno = internal_read_link(path, &result_bin);
+
+    if(posix_errno == 0) {
+        if(!normalize_path_result(&result_bin)) {
+            enif_release_binary(&result_bin);
+            return ENOMEM;
+        }
+
+        (*result) = enif_make_binary(env, &result_bin);
+    }
+
+    return posix_errno;
+}
+
+posix_errno_t efile_list_dir(ErlNifEnv *env, const efile_path_t *path, ERL_NIF_TERM *result) {
+    ERL_NIF_TERM list_head;
+    WIN32_FIND_DATAW data;
+    HANDLE search_handle;
+    WCHAR *search_path;
+    DWORD last_error;
+
+    ASSERT_PATH_FORMAT(path);
+
+    search_path = enif_alloc(path->size + 2 * sizeof(WCHAR));
+
+    if(search_path == NULL) {
+        return ENOMEM;
+    }
+
+    sys_memcpy(search_path, path->data, path->size);
+    search_path[PATH_LENGTH(path) + 0] = L'\\';
+    search_path[PATH_LENGTH(path) + 1] = L'*';
+    search_path[PATH_LENGTH(path) + 2] = L'\0';
+
+    search_handle = FindFirstFileW(search_path, &data);
+    last_error = GetLastError();
+
+    enif_free(search_path);
+
+    if(search_handle == INVALID_HANDLE_VALUE) {
+        return windows_to_posix_errno(last_error);
+    }
+
+    list_head = enif_make_list(env, 0);
+
+    do {
+        int name_length = wcslen(data.cFileName);
+
+        if(!is_ignored_name(name_length, data.cFileName)) {
+            unsigned char *name_bytes;
+            ERL_NIF_TERM name_term;
+            size_t name_size;
+
+            name_size = name_length * sizeof(WCHAR);
+
+            name_bytes = enif_make_new_binary(env, name_size, &name_term);
+            sys_memcpy(name_bytes, data.cFileName, name_size);
+
+            list_head = enif_make_list_cell(env, name_term, list_head);
+        }
+    } while(FindNextFileW(search_handle, &data));
+
+    FindClose(search_handle);
+    (*result) = list_head;
+
+    return 0;
+}
+
+posix_errno_t efile_rename(const efile_path_t *old_path, const efile_path_t *new_path) {
+    BOOL old_is_directory, new_is_directory;
+    DWORD move_flags, last_error;
+
+    ASSERT_PATH_FORMAT(old_path);
+    ASSERT_PATH_FORMAT(new_path);
+
+    move_flags = MOVEFILE_COPY_ALLOWED | MOVEFILE_WRITE_THROUGH;
+
+    if(MoveFileExW((WCHAR*)old_path->data, (WCHAR*)new_path->data, move_flags)) {
+        return 0;
+    }
+
+    last_error = GetLastError();
+
+    old_is_directory = has_file_attributes(old_path, FILE_ATTRIBUTE_DIRECTORY);
+    new_is_directory = has_file_attributes(new_path, FILE_ATTRIBUTE_DIRECTORY);
+
+    switch(last_error) {
+    case ERROR_SHARING_VIOLATION:
+    case ERROR_ACCESS_DENIED:
+        if(old_is_directory) {
+            BOOL moved_into_itself;
+
+            moved_into_itself = (old_path->size <= new_path->size) &&
+                !_wcsnicmp((WCHAR*)old_path->data, (WCHAR*)new_path->data,
+                    PATH_LENGTH(old_path));
+
+            if(moved_into_itself) {
+                return EINVAL;
+            } else if(is_path_root(old_path)) {
+                return EINVAL;
+            }
+
+            /* Renaming a directory across volumes needs to be rewritten as
+             * EXDEV so that the caller can respond by simulating it with
+             * copy/delete operations.
+             *
+             * Files are handled through MOVEFILE_COPY_ALLOWED. */
+            if(!has_same_mount_point(old_path, new_path)) {
+                return EXDEV;
+            }
+        }
+        break;
+    case ERROR_PATH_NOT_FOUND:
+    case ERROR_FILE_NOT_FOUND:
+        return ENOENT;
+    case ERROR_ALREADY_EXISTS:
+    case ERROR_FILE_EXISTS:
+        if(old_is_directory && !new_is_directory) {
+            return ENOTDIR;
+        } else if(!old_is_directory && new_is_directory) {
+            return EISDIR;
+        } else if(old_is_directory && new_is_directory) {
+            /* This will fail if the destination isn't empty. */
+            if(RemoveDirectoryW((WCHAR*)new_path->data)) {
+                return efile_rename(old_path, new_path);
+            }
+
+            return EEXIST;
+        } else if(!old_is_directory && !new_is_directory) {
+            /* This is pretty iffy; the public documentation says that the
+             * operation may EACCES on some systems when either file is open,
+             * which gives us room to use MOVEFILE_REPLACE_EXISTING and be done
+             * with it, but the old implementation simulated Unix semantics and
+             * there's a lot of code that relies on that.
+             *
+             * The simulation renames the destination to a scratch name to get
+             * around the fact that it's impossible to open (and by extension
+             * rename) a file that's been deleted while open. It has a few
+             * drawbacks though;
+             *
+             * 1) It's not atomic as there's a small window where there's no
+             *    file at all on the destination path.
+             * 2) It will confuse applications that subscribe to folder
+             *    changes.
+             * 3) It will fail if we lack general permission to write in the
+             *    same folder. */
+
+            WCHAR *swap_path = enif_alloc(new_path->size + sizeof(WCHAR) * 64);
+
+            if(swap_path == NULL) {
+                return ENOMEM;
+            } else {
+                static LONGLONG unique_counter = 0;
+                WCHAR *swap_path_end;
+
+                /* We swap in the same folder as the destination to be
+                 * reasonably sure that it's on the same volume. Note that
+                 * we're avoiding GetTempFileNameW as it will fail on long
+                 * paths. */
+
+                sys_memcpy(swap_path, (WCHAR*)new_path->data, new_path->size);
+                swap_path_end = swap_path + PATH_LENGTH(new_path);
+
+                while(!IS_SLASH(*swap_path_end)) {
+                    ASSERT(swap_path_end > swap_path);
+                    swap_path_end--;
+                }
+
+                StringCchPrintfW(&swap_path_end[1], 64, L"erl-%lx-%llx.tmp",
+                    GetCurrentProcessId(), unique_counter);
+                InterlockedIncrement64(&unique_counter);
+            }
+
+            if(MoveFileExW((WCHAR*)new_path->data, swap_path, MOVEFILE_REPLACE_EXISTING)) {
+                if(MoveFileExW((WCHAR*)old_path->data, (WCHAR*)new_path->data, move_flags)) {
+                    last_error = ERROR_SUCCESS;
+                    DeleteFileW(swap_path);
+                } else {
+                    last_error = GetLastError();
+                    MoveFileW(swap_path, (WCHAR*)new_path->data);
+                }
+            } else {
+                last_error = GetLastError();
+                DeleteFileW(swap_path);
+            }
+
+            enif_free(swap_path);
+
+            return windows_to_posix_errno(last_error);
+        }
+
+        return EEXIST;
+    }
+
+    return windows_to_posix_errno(last_error);
+}
+
+posix_errno_t efile_make_hard_link(const efile_path_t *existing_path, const efile_path_t *new_path) {
+    ASSERT_PATH_FORMAT(existing_path);
+    ASSERT_PATH_FORMAT(new_path);
+
+    if(!CreateHardLinkW((WCHAR*)new_path->data, (WCHAR*)existing_path->data, NULL)) {
+        return windows_to_posix_errno(GetLastError());
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_make_soft_link(const efile_path_t *existing_path, const efile_path_t *new_path) {
+    DWORD link_flags;
+
+    ASSERT_PATH_FORMAT(existing_path);
+    ASSERT_PATH_FORMAT(new_path);
+
+    if(has_file_attributes(existing_path, FILE_ATTRIBUTE_DIRECTORY)) {
+        link_flags = SYMBOLIC_LINK_FLAG_DIRECTORY;
+    } else {
+        link_flags = 0;
+    }
+
+    if(!CreateSymbolicLinkW((WCHAR*)new_path->data, (WCHAR*)existing_path->data, link_flags)) {
+        return windows_to_posix_errno(GetLastError());
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_make_dir(const efile_path_t *path) {
+    ASSERT_PATH_FORMAT(path);
+
+    if(!CreateDirectoryW((WCHAR*)path->data, NULL)) {
+        return windows_to_posix_errno(GetLastError());
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_del_file(const efile_path_t *path) {
+    ASSERT_PATH_FORMAT(path);
+
+    if(!DeleteFileW((WCHAR*)path->data)) {
+        DWORD last_error = GetLastError();
+
+        switch(last_error) {
+        case ERROR_INVALID_NAME:
+            /* Attempted to delete a device or similar. */
+            return EACCES;
+        case ERROR_ACCESS_DENIED:
+            /* Windows NT reports removing a directory as EACCES instead of
+             * EPERM. */
+            if(has_file_attributes(path, FILE_ATTRIBUTE_DIRECTORY)) {
+                return EPERM;
+            }
+            break;
+        }
+
+        return windows_to_posix_errno(last_error);
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_del_dir(const efile_path_t *path) {
+    ASSERT_PATH_FORMAT(path);
+
+    if(!RemoveDirectoryW((WCHAR*)path->data)) {
+        DWORD last_error = GetLastError();
+
+        if(last_error == ERROR_DIRECTORY) {
+            return ENOTDIR;
+        }
+
+        return windows_to_posix_errno(last_error);
+    }
+
+    return 0;
+}
+
+posix_errno_t efile_set_cwd(const efile_path_t *path) {
+    const WCHAR *path_start;
+
+    ASSERT_PATH_FORMAT(path);
+
+    /* We have to use _wchdir since that's the only function that updates the
+     * per-drive working directory, but it naively assumes that all paths
+     * starting with \\ are UNC paths, so we have to skip the \\?\-prefix. */
+    path_start = (WCHAR*)path->data + LP_PREFIX_LENGTH;
+
+    if(_wchdir(path_start)) {
+        return windows_to_posix_errno(GetLastError());
+    }
+
+    return 0;
+}
+
+static int is_valid_drive(int device_index) {
+    WCHAR drive_path[4] = {L'?', L':', L'\\', L'\0'};
+
+    if(device_index == 0) {
+        /* Default drive; always valid. */
+        return 1;
+    } else if(device_index > (L'Z' - L'A' + 1)) {
+        return 0;
+    }
+
+    drive_path[0] = device_index + L'A' - 1;
+
+    switch(GetDriveTypeW(drive_path)) {
+    case DRIVE_NO_ROOT_DIR:
+    case DRIVE_UNKNOWN:
+        return 0;
+    }
+
+    return 1;
+}
+
+posix_errno_t efile_get_device_cwd(ErlNifEnv *env, int device_index, ERL_NIF_TERM *result) {
+    ErlNifBinary result_bin;
+
+    /* _wgetdcwd might crash the entire emulator on debug builds since the CRT
+     * invalid parameter handler asserts if passed a non-existent drive (Or
+     * simply one that has been unmounted), so we check it ourselves to avoid
+     * that. */
+    if(!is_valid_drive(device_index)) {
+        return EACCES;
+    }
+
+    if(!enif_alloc_binary(MAX_PATH * sizeof(WCHAR), &result_bin)) {
+        return ENOMEM;
+    }
+
+    if(_wgetdcwd(device_index, (WCHAR*)result_bin.data, MAX_PATH) == NULL) {
+        enif_release_binary(&result_bin);
+        return EACCES;
+    }
+
+    if(!normalize_path_result(&result_bin)) {
+        enif_release_binary(&result_bin);
+        return ENOMEM;
+    }
+
+    (*result) = enif_make_binary(env, &result_bin);
+
+    return 0;
+}
+
+posix_errno_t efile_get_cwd(ErlNifEnv *env, ERL_NIF_TERM *result) {
+    return efile_get_device_cwd(env, 0, result);
+}
+
+posix_errno_t efile_altname(ErlNifEnv *env, const efile_path_t *path, ERL_NIF_TERM *result) {
+    ErlNifBinary result_bin;
+
+    ASSERT_PATH_FORMAT(path);
+
+    if(is_path_root(path)) {
+        /* Root paths can't be queried so we'll just return them as they are. */
+        if(!enif_alloc_binary(path->size, &result_bin)) {
+            return ENOMEM;
+        }
+
+        sys_memcpy(result_bin.data, path->data, path->size);
+    } else {
+        WIN32_FIND_DATAW data;
+        HANDLE handle;
+
+        WCHAR *name_buffer;
+        int name_length;
+
+        /* Reject path wildcards. */
+        if(wcspbrk(&((const WCHAR*)path->data)[4], L"?*")) {
+            return ENOENT;
+        }
+
+        handle = FindFirstFileW((const WCHAR*)path->data, &data);
+
+        if(handle == INVALID_HANDLE_VALUE) {
+            return windows_to_posix_errno(GetLastError());
+        }
+
+        FindClose(handle);
+
+        name_length = wcslen(data.cAlternateFileName);
+
+        if(name_length > 0) {
+            name_buffer = data.cAlternateFileName;
+        } else {
+            name_length = wcslen(data.cFileName);
+            name_buffer = data.cFileName;
+        }
+
+        /* Include NUL-terminator; it will be removed after normalization. */
+        name_length += 1;
+
+        if(!enif_alloc_binary(name_length * sizeof(WCHAR), &result_bin)) {
+            return ENOMEM;
+        }
+
+        sys_memcpy(result_bin.data, name_buffer, name_length * sizeof(WCHAR));
+    }
+
+    if(!normalize_path_result(&result_bin)) {
+        enif_release_binary(&result_bin);
+        return ENOMEM;
+    }
+
+    (*result) = enif_make_binary(env, &result_bin);
+
+    return 0;
+}
+
+static int windows_to_posix_errno(DWORD last_error) {
+    switch(last_error) {
+    case ERROR_SUCCESS:
+        return 0;
+    case ERROR_INVALID_FUNCTION:
+    case ERROR_INVALID_DATA:
+    case ERROR_INVALID_PARAMETER:
+    case ERROR_INVALID_TARGET_HANDLE:
+    case ERROR_INVALID_CATEGORY:
+    case ERROR_NEGATIVE_SEEK:
+        return EINVAL;
+    case ERROR_DIR_NOT_EMPTY:
+        return EEXIST;
+    case ERROR_BAD_FORMAT:
+        return ENOEXEC;
+    case ERROR_PATH_NOT_FOUND:
+    case ERROR_FILE_NOT_FOUND:
+    case ERROR_NO_MORE_FILES:
+    case ERROR_INVALID_NAME:
+        return ENOENT;
+    case ERROR_TOO_MANY_OPEN_FILES:
+        return EMFILE;
+    case ERROR_ACCESS_DENIED:
+    case ERROR_INVALID_ACCESS:
+    case ERROR_CURRENT_DIRECTORY:
+    case ERROR_SHARING_VIOLATION:
+    case ERROR_LOCK_VIOLATION:
+    case ERROR_INVALID_PASSWORD:
+    case ERROR_DRIVE_LOCKED:
+        return EACCES;
+    case ERROR_INVALID_HANDLE:
+        return EBADF;
+    case ERROR_NOT_ENOUGH_MEMORY:
+    case ERROR_OUTOFMEMORY:
+    case ERROR_OUT_OF_STRUCTURES:
+        return ENOMEM;
+    case ERROR_INVALID_DRIVE:
+    case ERROR_BAD_UNIT:
+    case ERROR_NOT_READY:
+    case ERROR_REM_NOT_LIST:
+    case ERROR_DUP_NAME:
+    case ERROR_BAD_NETPATH:
+    case ERROR_NETWORK_BUSY:
+    case ERROR_DEV_NOT_EXIST:
+    case ERROR_BAD_NET_NAME:
+        return ENXIO;
+    case ERROR_NOT_SAME_DEVICE:
+        return EXDEV;
+    case ERROR_WRITE_PROTECT:
+        return EROFS;
+    case ERROR_BAD_LENGTH:
+    case ERROR_BUFFER_OVERFLOW:
+        return E2BIG;
+    case ERROR_SEEK:
+    case ERROR_SECTOR_NOT_FOUND:
+        return ESPIPE;
+    case ERROR_NOT_DOS_DISK:
+        return ENODEV;
+    case ERROR_GEN_FAILURE:
+        return ENODEV;
+    case ERROR_SHARING_BUFFER_EXCEEDED:
+    case ERROR_NO_MORE_SEARCH_HANDLES:
+        return EMFILE;
+    case ERROR_HANDLE_EOF:
+    case ERROR_BROKEN_PIPE:
+        return EPIPE;
+    case ERROR_HANDLE_DISK_FULL:
+    case ERROR_DISK_FULL:
+        return ENOSPC;
+    case ERROR_NOT_SUPPORTED:
+        return ENOTSUP;
+    case ERROR_FILE_EXISTS:
+    case ERROR_ALREADY_EXISTS:
+    case ERROR_CANNOT_MAKE:
+        return EEXIST;
+    case ERROR_ALREADY_ASSIGNED:
+        return EBUSY;
+    case ERROR_NO_PROC_SLOTS:
+        return EAGAIN;
+    case ERROR_CANT_RESOLVE_FILENAME:
+        return EMLINK;
+    case ERROR_PRIVILEGE_NOT_HELD:
+        return EPERM;
+    case ERROR_ARENA_TRASHED:
+    case ERROR_INVALID_BLOCK:
+    case ERROR_BAD_ENVIRONMENT:
+    case ERROR_BAD_COMMAND:
+    case ERROR_CRC:
+    case ERROR_OUT_OF_PAPER:
+    case ERROR_READ_FAULT:
+    case ERROR_WRITE_FAULT:
+    case ERROR_WRONG_DISK:
+    case ERROR_NET_WRITE_FAULT:
+        return EIO;
+    default: /* not to do with files I expect. */
+        return EIO;
+    }
+}
diff --git a/erts/emulator/sys/common/erl_poll.c b/erts/emulator/sys/common/erl_poll.c
index 30a595c17a..7aa53e8f36 100644
--- a/erts/emulator/sys/common/erl_poll.c
+++ b/erts/emulator/sys/common/erl_poll.c
@@ -2059,7 +2059,8 @@ uint32_t epoll_events(int kp_fd, int fd)
         int ev_fd;
         uint32_t events;
         uint64_t data;
-        if (fscanf(f,"tfd:%d events:%x data:%lx\n", &ev_fd, &events, &data) != 3) {
+        if (fscanf(f,"tfd:%d events:%x data:%llx\n", &ev_fd, &events,
+                   (unsigned long long*)&data) != 3) {
             fprintf(stderr,"failed to parse file %s on line %d, errno = %d\n", fname,
                     line,
                     errno);
@@ -2125,7 +2126,8 @@ ERTS_POLL_EXPORT(erts_poll_get_selected_events)(ErtsPollSet *ps,
         int fd;
         uint32_t events;
         uint64_t data;
-        if (fscanf(f,"tfd:%d events:%x data:%lx\n", &fd, &events, &data) != 3) {
+        if (fscanf(f,"tfd:%d events:%x data:%llx\n", &fd, &events,
+                   (unsigned long long*)&data) != 3) {
             fprintf(stderr,"failed to parse file %s on line %d, errno = %d\n",
                     fname, line, errno);
             ASSERT(0);
diff --git a/erts/emulator/test/Makefile b/erts/emulator/test/Makefile
index b17170c8b8..bf00de2204 100644
--- a/erts/emulator/test/Makefile
+++ b/erts/emulator/test/Makefile
@@ -57,6 +57,7 @@ MODULES= \
 	dirty_nif_SUITE \
 	distribution_SUITE \
 	driver_SUITE \
+	dump_SUITE \
 	efile_SUITE \
 	erts_debug_SUITE \
 	estone_SUITE \
diff --git a/erts/emulator/test/alloc_SUITE.erl b/erts/emulator/test/alloc_SUITE.erl
index f0871ead7d..5e5cd6f578 100644
--- a/erts/emulator/test/alloc_SUITE.erl
+++ b/erts/emulator/test/alloc_SUITE.erl
@@ -89,10 +89,11 @@ mmsc_flags() ->
 mmsc_flags(Env) ->
     case os:getenv(Env) of
 	false -> false;
-	V -> case string:str(V, "+MMsc") of
-		 0 -> false;
-		 P -> Env ++ "=" ++ string:substr(V, P)
-	     end
+	V ->
+            case string:find(V, "+MMsc") of
+                nomatch -> false;
+                SubStr -> Env ++ "=" ++ SubStr
+            end
     end.
 
 erts_mmap_do(Config, SCO, SCRPM, SCRFSD) ->
diff --git a/erts/emulator/test/bif_SUITE.erl b/erts/emulator/test/bif_SUITE.erl
index 04b7f2de15..e1b42e5d85 100644
--- a/erts/emulator/test/bif_SUITE.erl
+++ b/erts/emulator/test/bif_SUITE.erl
@@ -731,10 +731,12 @@ erlang_halt(Config) when is_list(Config) ->
                                  [broken_halt, "Validate correct crash dump"]),
     {ok,_} = wait_until_stable_size(CrashDump,-1),
     {ok, Bin} = file:read_file(CrashDump),
-    case {string:str(binary_to_list(Bin),"\n=end\n"),
-          string:str(binary_to_list(Bin),"\r\n=end\r\n")} of
-        {0,0} -> ct:fail("Could not find end marker in crash dump");
-        _ -> ok
+    case {string:find(Bin, <<"\n=end\n">>),
+          string:find(Bin, <<"\r\n=end\r\n">>)} of
+        {nomatch,nomatch} ->
+            ct:fail("Could not find end marker in crash dump");
+        {_,_} ->
+            ok
     end.
 
 wait_until_stable_size(_File,-10) ->
@@ -779,14 +781,20 @@ is_builtin(_Config) ->
 		       {F,A} <- M:module_info(exports)],
     Exp = ordsets:from_list(Exp0),
 
-    %% erlang:apply/3 is considered to be built-in, but is not
-    %% implemented as other BIFs.
+    %% Built-ins implemented as special instructions.
+    Instructions = [{erlang,apply,2},{erlang,apply,3},{erlang,yield,0}],
 
-    Builtins0 = [{erlang,apply,3}|erlang:system_info(snifs)],
+    Builtins0 = Instructions ++ erlang:system_info(snifs),
     Builtins = ordsets:from_list(Builtins0),
-    NotBuiltin = ordsets:subtract(Exp, Builtins),
-    _ = [true = erlang:is_builtin(M, F, A) || {M,F,A} <- Builtins],
-    _ = [false = erlang:is_builtin(M, F, A) || {M,F,A} <- NotBuiltin],
+
+    Fakes = [{M,F,42} || {M,F,_} <- Instructions],
+    All = ordsets:from_list(Fakes ++ Exp),
+    NotBuiltin = ordsets:subtract(All, Builtins),
+
+    _ = [{true,_} = {erlang:is_builtin(M, F, A),MFA} ||
+            {M,F,A}=MFA <- Builtins],
+    _ = [{false,_} = {erlang:is_builtin(M, F, A),MFA} ||
+            {M,F,A}=MFA <- NotBuiltin],
 
     ok.
 
diff --git a/erts/emulator/test/binary_SUITE.erl b/erts/emulator/test/binary_SUITE.erl
index 61536bacd7..4bc1838139 100644
--- a/erts/emulator/test/binary_SUITE.erl
+++ b/erts/emulator/test/binary_SUITE.erl
@@ -48,6 +48,7 @@
 	 bad_list_to_binary/1, bad_binary_to_list/1,
 	 t_split_binary/1, bad_split/1,
 	 terms/1, terms_float/1, float_middle_endian/1,
+         b2t_used_big/1,
 	 external_size/1, t_iolist_size/1,
 	 t_hash/1,
 	 bad_size/1,
@@ -57,7 +58,9 @@
 	 otp_5484/1,otp_5933/1,
 	 ordering/1,unaligned_order/1,gc_test/1,
 	 bit_sized_binary_sizes/1,
-	 otp_6817/1,deep/1,obsolete_funs/1,robustness/1,otp_8117/1,
+	 otp_6817/1,deep/1,
+         term2bin_tuple_fallbacks/1,
+         robustness/1,otp_8117/1,
 	 otp_8180/1, trapping/1, large/1,
 	 error_after_yield/1, cmp_old_impl/1]).
 
@@ -72,12 +75,14 @@ all() ->
      t_split_binary, bad_split,
      bad_list_to_binary, bad_binary_to_list, terms,
      terms_float, float_middle_endian, external_size, t_iolist_size,
+     b2t_used_big,
      bad_binary_to_term_2, safe_binary_to_term2,
      bad_binary_to_term, bad_terms, t_hash, bad_size,
      bad_term_to_binary, more_bad_terms, otp_5484, otp_5933,
      ordering, unaligned_order, gc_test,
      bit_sized_binary_sizes, otp_6817, otp_8117, deep,
-     obsolete_funs, robustness, otp_8180, trapping, large,
+     term2bin_tuple_fallbacks,
+     robustness, otp_8180, trapping, large,
      error_after_yield, cmp_old_impl].
 
 groups() -> 
@@ -425,40 +430,77 @@ bad_term_to_binary(Config) when is_list(Config) ->
 
 terms(Config) when is_list(Config) ->
     TestFun = fun(Term) ->
-		      try
-			  S = io_lib:format("~p", [Term]),
-			  io:put_chars(S)
-		      catch
-			  error:badarg ->
-			      io:put_chars("bit sized binary")
-		      end,
+                      S = io_lib:format("~p", [Term]),
+                      io:put_chars(S),
 		      Bin = term_to_binary(Term),
 		      case erlang:external_size(Bin) of
 			  Sz when is_integer(Sz), size(Bin) =< Sz ->
 			      ok
 		      end,
-              Bin1 = term_to_binary(Term, [{minor_version, 1}]),
-              case erlang:external_size(Bin1, [{minor_version, 1}]) of
-              Sz1 when is_integer(Sz1), size(Bin1) =< Sz1 ->
-                  ok
-              end,
+                      Bin1 = term_to_binary(Term, [{minor_version, 1}]),
+                      case erlang:external_size(Bin1, [{minor_version, 1}]) of
+                          Sz1 when is_integer(Sz1), size(Bin1) =< Sz1 ->
+                              ok
+                      end,
 		      Term = binary_to_term_stress(Bin),
 		      Term = binary_to_term_stress(Bin, [safe]),
-		      Unaligned = make_unaligned_sub_binary(Bin),
-		      Term = binary_to_term_stress(Unaligned),
-		      Term = binary_to_term_stress(Unaligned, []),
-		      Term = binary_to_term_stress(Bin, [safe]),
+                      Bin_sz = byte_size(Bin),
+		      {Term,Bin_sz} = binary_to_term_stress(Bin, [used]),
+
+                      BinE = <<Bin/binary, 1, 2, 3>>,
+		      {Term,Bin_sz} = binary_to_term_stress(BinE, [used]),
+
+		      BinU = make_unaligned_sub_binary(Bin),
+		      Term = binary_to_term_stress(BinU),
+		      Term = binary_to_term_stress(BinU, []),
+		      Term = binary_to_term_stress(BinU, [safe]),
+		      {Term,Bin_sz} = binary_to_term_stress(BinU, [used]),
+
+                      BinUE = make_unaligned_sub_binary(BinE),
+		      {Term,Bin_sz} = binary_to_term_stress(BinUE, [used]),
+
 		      BinC = erlang:term_to_binary(Term, [compressed]),
+                      BinC_sz = byte_size(BinC),
+		      true = BinC_sz =< size(Bin),
 		      Term = binary_to_term_stress(BinC),
-		      true = size(BinC) =< size(Bin),
+		      {Term, BinC_sz} = binary_to_term_stress(BinC, [used]),
+
 		      Bin = term_to_binary(Term, [{compressed,0}]),
 		      terms_compression_levels(Term, size(Bin), 1),
-		      UnalignedC = make_unaligned_sub_binary(BinC),
-		      Term = binary_to_term_stress(UnalignedC)
+
+		      BinUC = make_unaligned_sub_binary(BinC),
+		      Term = binary_to_term_stress(BinUC),
+                      {Term,BinC_sz} = binary_to_term_stress(BinUC, [used]),
+
+                      BinCE = <<BinC/binary, 1, 2, 3>>,
+		      {Term,BinC_sz} = binary_to_term_stress(BinCE, [used]),
+
+		      BinUCE = make_unaligned_sub_binary(BinCE),
+		      Term = binary_to_term_stress(BinUCE),
+                      {Term,BinC_sz} = binary_to_term_stress(BinUCE, [used])
 	      end,
     test_terms(TestFun),
     ok.
 
+%% Test binary_to_term(_, [used]) returning a big Used integer.
+b2t_used_big(_Config) ->
+    case erlang:system_info(wordsize) of
+        8 ->
+            {skipped, "This is not a 32-bit machine"};
+        4 ->
+            %% Use a long utf8 atom for large external format but compact on heap.
+            BigAtom = binary_to_atom(<< <<16#F0908D88:32>> || _ <- lists:seq(1,255) >>,
+                                     utf8),
+            Atoms = (1 bsl 17) + (1 bsl 9),
+            BigAtomList = lists:duplicate(Atoms, BigAtom),
+            BigBin = term_to_binary(BigAtomList),
+            {BigAtomList, Used} = binary_to_term(BigBin, [used]),
+            2 = erts_debug:size(Used),
+            Used = byte_size(BigBin),
+            Used = 1 + 1 + 4 + Atoms*(1+2+4*255) + 1,
+            ok
+    end.
+
 terms_compression_levels(Term, UncompressedSz, Level) when Level < 10 ->
     BinC = erlang:term_to_binary(Term, [{compressed,Level}]),
     Term = binary_to_term_stress(BinC),
@@ -1160,7 +1202,7 @@ very_big_num(0, Result) ->
     Result.
 
 make_port() ->
-    open_port({spawn, efile}, [eof]).
+    hd(erlang:ports()).
 
 make_pid() ->
     spawn_link(?MODULE, sleeper, []).
@@ -1261,40 +1303,28 @@ deep_roundtrip(T) ->
     B = term_to_binary(T),
     T = binary_to_term(B).
 
-obsolete_funs(Config) when is_list(Config) ->
+term2bin_tuple_fallbacks(Config) when is_list(Config) ->
     erts_debug:set_internal_state(available_internal_state, true),
 
-    X = id({1,2,3}),
-    Y = id([a,b,c,d]),
-    Z = id({x,y,z}),
-    obsolete_fun(fun() -> ok end),
-    obsolete_fun(fun() -> X end),
-    obsolete_fun(fun(A) -> {A,X} end),
-    obsolete_fun(fun() -> {X,Y} end),
-    obsolete_fun(fun() -> {X,Y,Z} end),
-
-    obsolete_fun(fun ?MODULE:all/1),
+    term2bin_tf(fun ?MODULE:all/1),
+    term2bin_tf(<<1:1>>),
+    term2bin_tf(<<90,80:7>>),
 
     erts_debug:set_internal_state(available_internal_state, false),
     ok.
 
-obsolete_fun(Fun) ->
-    Tuple = case erlang:fun_info(Fun, type) of
-		{type,external} ->
-		    {module,M} = erlang:fun_info(Fun, module),
-		    {name,F} = erlang:fun_info(Fun, name),
-		    {M,F};
-		{type,local} ->
-		    {module,M} = erlang:fun_info(Fun, module),
-		    {index,I} = erlang:fun_info(Fun, index),
-		    {uniq,U} = erlang:fun_info(Fun, uniq),
-		    {env,E} = erlang:fun_info(Fun, env),
-		    {'fun',M,I,U,list_to_tuple(E)}
-	    end,
-    Tuple = no_fun_roundtrip(Fun).
-
-no_fun_roundtrip(Term) ->
-    binary_to_term_stress(erts_debug:get_internal_state({term_to_binary_no_funs,Term})).
+term2bin_tf(Term) ->
+    Tuple = case Term of
+                Fun when is_function(Fun) ->
+                    {type, external} = erlang:fun_info(Fun, type),
+                    {module,M} = erlang:fun_info(Fun, module),
+                    {name,F} = erlang:fun_info(Fun, name),
+                    {M,F};
+                BS when bit_size(BS) rem 8 =/= 0 ->
+                    Bits = bit_size(BS) rem 8,
+                    {<<BS/bitstring, 0:(8-Bits)>>, Bits}
+            end,
+    Tuple = binary_to_term_stress(erts_debug:get_internal_state({term_to_binary_tuple_fallbacks,Term})).
 
 %% Test non-standard encodings never generated by term_to_binary/1
 %% but recognized by binary_to_term/1.
@@ -1442,13 +1472,13 @@ error_after_yield(Type, M, F, AN, AFun, TrapFunc) ->
 					   apply(M, F, A),
 					   exit({unexpected_success, {M, F, A}})
 				       catch
-					   error:Type ->
+					   error:Type:Stk ->
 					       erlang:trace(self(),false,[running,{tracer,Tracer}]),
 					       %% We threw the exception from the native
 					       %% function we trapped to, but we want
 					       %% the BIF that originally was called
 					       %% to appear in the stack trace.
-					       [{M, F, A, _} | _] = erlang:get_stacktrace()
+					       [{M, F, A, _} | _] = Stk
 				       end
 			       end),
     receive
diff --git a/erts/emulator/test/call_trace_SUITE.erl b/erts/emulator/test/call_trace_SUITE.erl
index 1251d644ae..d19f7f81ad 100644
--- a/erts/emulator/test/call_trace_SUITE.erl
+++ b/erts/emulator/test/call_trace_SUITE.erl
@@ -1116,8 +1116,8 @@ get_deep_4_loc(Arg) ->
         deep_4(Arg),
         ct:fail(should_not_return_to_here)
     catch
-        _:_ ->
-            [{?MODULE,deep_4,1,Loc0}|_] = erlang:get_stacktrace(),
+        _:_:Stk ->
+            [{?MODULE,deep_4,1,Loc0}|_] = Stk,
             Loc0
     end.
 
diff --git a/erts/emulator/test/code_SUITE.erl b/erts/emulator/test/code_SUITE.erl
index 77321aa50f..dca600bc7b 100644
--- a/erts/emulator/test/code_SUITE.erl
+++ b/erts/emulator/test/code_SUITE.erl
@@ -25,6 +25,7 @@
          multi_proc_purge/1, t_check_old_code/1,
          external_fun/1,get_chunk/1,module_md5/1,
          constant_pools/1,constant_refc_binaries/1,
+         fake_literals/1,
          false_dependency/1,coverage/1,fun_confusion/1,
          t_copy_literals/1, t_copy_literals_frags/1]).
 
@@ -38,7 +39,8 @@ all() ->
      call_purged_fun_code_reload, call_purged_fun_code_there,
      multi_proc_purge, t_check_old_code, external_fun, get_chunk,
      module_md5,
-     constant_pools, constant_refc_binaries, false_dependency,
+     constant_pools, constant_refc_binaries, fake_literals,
+     false_dependency,
      coverage, fun_confusion, t_copy_literals, t_copy_literals_frags].
 
 init_per_suite(Config) ->
@@ -554,6 +556,62 @@ wait_for_memory_deallocations() ->
             wait_for_memory_deallocations()
     end.
 
+fake_literals(_Config) ->
+    Mod = fake__literals__module,
+    try
+        do_fake_literals(Mod)
+    after
+        _ = code:purge(Mod),
+        _ = code:delete(Mod),
+        _ = code:purge(Mod),
+        _ = code:delete(Mod)
+    end,
+    ok.
+
+do_fake_literals(Mod) ->
+    Tid = ets:new(test, []),
+    ExtTerms = get_external_terms(),
+    Term0 = {self(),make_ref(),Tid,fun() -> ok end,ExtTerms},
+    Terms = [begin
+                 make_literal_module(Mod, Term0),
+                 Mod:term()
+             end || _ <- lists:seq(1, 10)],
+    verify_lit_terms(Terms, Term0),
+    true = ets:delete(Tid),
+    ok.
+
+make_literal_module(Mod, Term) ->
+    Exp = [{term,0}],
+    Attr = [],
+    Fs = [{function,term,0,2,
+           [{label,1},
+            {line,[]},
+            {func_info,{atom,Mod},{atom,term},0},
+            {label,2},
+            {move,{literal,Term},{x,0}},
+            return]}],
+    Asm = {Mod,Exp,Attr,Fs,2},
+    {ok,Mod,Beam} = compile:forms(Asm, [from_asm,binary,report]),
+    code:load_binary(Mod, atom_to_list(Mod), Beam).
+
+verify_lit_terms([H|T], Term) ->
+    case H =:= Term of
+        true ->
+            verify_lit_terms(T, Term);
+        false ->
+            error({bad_term,H})
+    end;
+verify_lit_terms([], _) ->
+    ok.
+
+get_external_terms() ->
+    {ok,Node} =	test_server:start_node(?FUNCTION_NAME, slave, []),
+    Ref = rpc:call(Node, erlang, make_ref, []),
+    Ports = rpc:call(Node, erlang, ports, []),
+    Pid = rpc:call(Node, erlang, self, []),
+    _ = test_server:stop_node(Node),
+    {Ref,hd(Ports),Pid}.
+
 %% OTP-7559: c_p->cp could contain garbage and create a false dependency
 %% to a module in a process. (Thanks to Richard Carlsson.)
 false_dependency(Config) when is_list(Config) ->
diff --git a/erts/emulator/test/ddll_SUITE.erl b/erts/emulator/test/ddll_SUITE.erl
index 031b05790d..4998fc08be 100644
--- a/erts/emulator/test/ddll_SUITE.erl
+++ b/erts/emulator/test/ddll_SUITE.erl
@@ -775,7 +775,7 @@ errors(Config) when is_list(Config) ->
     {error, bad_driver_name} = erl_ddll:load_driver(Path, wrongname_drv),
 
     %% We assume that there is a statically linked driver named "ddll":
-    {error, linked_in_driver} = erl_ddll:unload_driver(efile),
+    {error, linked_in_driver} = erl_ddll:unload_driver(ram_file_drv),
     {error, not_loaded} = erl_ddll:unload_driver("__pucko_driver__"),
 
     case os:type() of
diff --git a/erts/emulator/test/decode_packet_SUITE.erl b/erts/emulator/test/decode_packet_SUITE.erl
index 54ee4d5567..0ccdbd7ee8 100644
--- a/erts/emulator/test/decode_packet_SUITE.erl
+++ b/erts/emulator/test/decode_packet_SUITE.erl
@@ -239,7 +239,7 @@ packet_size(Config) when is_list(Config) ->
     %% Test OTP-9389, long HTTP header lines.
     Opts = [{packet_size, 128}],
     Pkt = list_to_binary(["GET / HTTP/1.1\r\nHost: localhost\r\nLink: /",
-                          string:chars($Y, 64), "\r\n\r\n"]),
+                          lists:duplicate(64, $Y), "\r\n\r\n"]),
     <<Pkt1:50/binary, Pkt2/binary>> = Pkt,
     {ok, {http_request,'GET',{abs_path,"/"},{1,1}}, Rest1} =
     erlang:decode_packet(http, Pkt1, Opts),
@@ -250,7 +250,7 @@ packet_size(Config) when is_list(Config) ->
     erlang:decode_packet(httph, list_to_binary([Rest2, Pkt2]), Opts),
 
     Pkt3 = list_to_binary(["GET / HTTP/1.1\r\nHost: localhost\r\nLink: /",
-                           string:chars($Y, 129), "\r\n\r\n"]),
+                           lists:duplicate(129, $Y), "\r\n\r\n"]),
     {ok, {http_request,'GET',{abs_path,"/"},{1,1}}, Rest3} =
     erlang:decode_packet(http, Pkt3, Opts),
     {ok, {http_header,_,'Host',_,"localhost"}, Rest4} =
@@ -509,9 +509,9 @@ decode_line(Bin,MaxLen) ->
     end.
 
 find_in_binary(Byte, Bin) ->
-    case string:chr(binary_to_list(Bin),Byte) of
-        0 -> notfound;	    
-        P -> P
+    case string:find(Bin, [Byte]) of
+        nomatch -> notfound;
+        Suffix -> byte_size(Bin) - byte_size(Suffix) + 1
     end.    
 
 ssl(Config) when is_list(Config) ->
@@ -562,7 +562,7 @@ decode_pkt(Type,Bin,Opts) ->
 otp_9389(Config) when is_list(Config) ->
     Opts = [{packet_size, 16384}, {line_length, 3000}],
     Pkt = list_to_binary(["GET / HTTP/1.1\r\nHost: localhost\r\nLink: /",
-                          string:chars($X, 8192),
+                          lists:duplicate(8192, $X),
                           "\r\nContent-Length: 0\r\n\r\n"]),
     <<Pkt1:5000/binary, Pkt2/binary>> = Pkt,
     {ok, {http_request,'GET',{abs_path,"/"},{1,1}}, Rest1} =
diff --git a/erts/emulator/test/dirty_bif_SUITE.erl b/erts/emulator/test/dirty_bif_SUITE.erl
index 981ec4d48d..46eb0cba58 100644
--- a/erts/emulator/test/dirty_bif_SUITE.erl
+++ b/erts/emulator/test/dirty_bif_SUITE.erl
@@ -108,90 +108,80 @@ dirty_bif_exception(Config) when is_list(Config) ->
 			      erts_debug:dirty_cpu(error, Error),
 			      ct:fail(expected_exception)
 			  catch
-			      error:ErrorType ->
-				  [{erts_debug,dirty_cpu,[error, Error],_}|_]
-				      = erlang:get_stacktrace(),
+			      error:ErrorType:Stk1 ->
+				  [{erts_debug,dirty_cpu,[error, Error],_}|_] = Stk1,
 				  ok
 			  end,
 			  try
 			      apply(erts_debug,dirty_cpu,[error, Error]),
 			      ct:fail(expected_exception)
 			  catch
-			      error:ErrorType ->
-				  [{erts_debug,dirty_cpu,[error, Error],_}|_]
-				      = erlang:get_stacktrace(),
+			      error:ErrorType:Stk2 ->
+				  [{erts_debug,dirty_cpu,[error, Error],_}|_] = Stk2,
 				  ok
 			  end,
 			  try
 			      erts_debug:dirty_io(error, Error),
 			      ct:fail(expected_exception)
 			  catch
-			      error:ErrorType ->
-				  [{erts_debug,dirty_io,[error, Error],_}|_]
-				      = erlang:get_stacktrace(),
+			      error:ErrorType:Stk3 ->
+				  [{erts_debug,dirty_io,[error, Error],_}|_] = Stk3,
 				  ok
 			  end,
 			  try
 			      apply(erts_debug,dirty_io,[error, Error]),
 			      ct:fail(expected_exception)
 			  catch
-			      error:ErrorType ->
-				  [{erts_debug,dirty_io,[error, Error],_}|_]
-				      = erlang:get_stacktrace(),
+			      error:ErrorType:Stk4 ->
+				  [{erts_debug,dirty_io,[error, Error],_}|_] = Stk4,
 				  ok
 			  end,
 			  try
 			      erts_debug:dirty(normal, error, Error),
 			      ct:fail(expected_exception)
 			  catch
-			      error:ErrorType ->
-				  [{erts_debug,dirty,[normal, error, Error],_}|_]
-				      = erlang:get_stacktrace(),
+			      error:ErrorType:Stk5 ->
+				  [{erts_debug,dirty,[normal, error, Error],_}|_] = Stk5,
 				  ok
 			  end,
 			  try
 			      apply(erts_debug,dirty,[normal, error, Error]),
 			      ct:fail(expected_exception)
 			  catch
-			      error:ErrorType ->
-				  [{erts_debug,dirty,[normal, error, Error],_}|_]
-				      = erlang:get_stacktrace(),
+			      error:ErrorType:Stk6 ->
+				  [{erts_debug,dirty,[normal, error, Error],_}|_] = Stk6,
 				  ok
 			  end,
 			  try
 			      erts_debug:dirty(dirty_cpu, error, Error),
 			      ct:fail(expected_exception)
 			  catch
-			      error:ErrorType ->
-				  [{erts_debug,dirty,[dirty_cpu, error, Error],_}|_]
-				      = erlang:get_stacktrace(),
+			      error:ErrorType:Stk7 ->
+				  [{erts_debug,dirty,[dirty_cpu, error, Error],_}|_] = Stk7,
 				  ok
 			  end,
 			  try
 			      apply(erts_debug,dirty,[dirty_cpu, error, Error]),
 			      ct:fail(expected_exception)
 			  catch
-			      error:ErrorType ->
-				  [{erts_debug,dirty,[dirty_cpu, error, Error],_}|_]
-				      = erlang:get_stacktrace(),
+			      error:ErrorType:Stk8 ->
+				  [{erts_debug,dirty,[dirty_cpu, error, Error],_}|_] = Stk8,
 				  ok
 			  end,
 			  try
 			      erts_debug:dirty(dirty_io, error, Error),
 			      ct:fail(expected_exception)
 			  catch
-			      error:ErrorType ->
-				  [{erts_debug,dirty,[dirty_io, error, Error],_}|_]
-				      = erlang:get_stacktrace(),
+			      error:ErrorType:Stk9 ->
+				  [{erts_debug,dirty,[dirty_io, error, Error],_}|_] = Stk9,
 				  ok
 			  end,
 			  try
 			      apply(erts_debug,dirty,[dirty_io, error, Error]),
 			      ct:fail(expected_exception)
 			  catch
-			      error:ErrorType ->
-				  [{erts_debug,dirty,[dirty_io, error, Error],_}|_]
-				      = erlang:get_stacktrace(),
+			      error:ErrorType:Stk10 ->
+				  [{erts_debug,dirty,[dirty_io, error, Error],_}|_] = Stk10,
 				  ok
 			  end
 		  end,
@@ -204,25 +194,22 @@ dirty_bif_multischedule_exception(Config) when is_list(Config) ->
     try
 	erts_debug:dirty_cpu(reschedule,1001)
     catch
-	error:badarg ->
-	    [{erts_debug,dirty_cpu,[reschedule, 1001],_}|_]
-		= erlang:get_stacktrace(),
+	error:badarg:Stk1 ->
+	    [{erts_debug,dirty_cpu,[reschedule, 1001],_}|_] = Stk1,
 	    ok
     end,
     try
 	erts_debug:dirty_io(reschedule,1001)
     catch
-	error:badarg ->
-	    [{erts_debug,dirty_io,[reschedule, 1001],_}|_]
-		= erlang:get_stacktrace(),
+	error:badarg:Stk2 ->
+	    [{erts_debug,dirty_io,[reschedule, 1001],_}|_] = Stk2,
 	    ok
     end,
     try
 	erts_debug:dirty(normal,reschedule,1001)
     catch
-	error:badarg ->
-	    [{erts_debug,dirty,[normal,reschedule,1001],_}|_]
-		= erlang:get_stacktrace(),
+	error:badarg:Stk3 ->
+	    [{erts_debug,dirty,[normal,reschedule,1001],_}|_] = Stk3,
 	    ok
     end.
 
@@ -230,6 +217,11 @@ dirty_scheduler_exit(Config) when is_list(Config) ->
     {ok, Node} = start_node(Config, "+SDio 1"),
     [ok] = mcall(Node,
                  [fun() ->
+                          %% Perform a dry run to ensure that all required code
+                          %% is loaded. Otherwise the test will fail since code
+                          %% loading is done through dirty IO and it won't make
+                          %% any progress during this test.
+                          _DryRun = test_dirty_scheduler_exit(),
 			  Start = erlang:monotonic_time(millisecond),
                           ok = test_dirty_scheduler_exit(),
 			  End = erlang:monotonic_time(millisecond),
@@ -246,23 +238,22 @@ test_dse(0,Pids) ->
     timer:sleep(100),
     kill_dse(Pids,[]);
 test_dse(N,Pids) ->
-    Pid = spawn_link(fun () -> erts_debug:dirty_io(wait, 5000) end),
+    Pid = spawn_link(fun () -> erts_debug:dirty_io(wait, 1000) end),
     test_dse(N-1,[Pid|Pids]).
 
 kill_dse([],Killed) ->
-    wait_dse(Killed);
+    wait_dse(Killed, ok);
 kill_dse([Pid|Pids],AlreadyKilled) ->
     exit(Pid,kill),
     kill_dse(Pids,[Pid|AlreadyKilled]).
 
-wait_dse([]) ->
-    ok;
-wait_dse([Pid|Pids]) ->
+wait_dse([], Result) ->
+    Result;
+wait_dse([Pid|Pids], Result) ->
     receive
-        {'EXIT',Pid,Reason} ->
-	    killed = Reason
-    end,
-    wait_dse(Pids).
+        {'EXIT', Pid, killed} -> wait_dse(Pids, Result);
+        {'EXIT', Pid, _Other} -> wait_dse(Pids, failed)
+    end.
 
 dirty_call_while_terminated(Config) when is_list(Config) ->
     Me = self(),
diff --git a/erts/emulator/test/dirty_nif_SUITE.erl b/erts/emulator/test/dirty_nif_SUITE.erl
index 13806fd5c4..93d0ac392c 100644
--- a/erts/emulator/test/dirty_nif_SUITE.erl
+++ b/erts/emulator/test/dirty_nif_SUITE.erl
@@ -109,9 +109,8 @@ dirty_nif_exception(Config) when is_list(Config) ->
 	call_dirty_nif_exception(1),
 	ct:fail(expected_badarg)
     catch
-	error:badarg ->
-	    [{?MODULE,call_dirty_nif_exception,[1],_}|_] =
-		erlang:get_stacktrace(),
+	error:badarg:Stk1 ->
+	    [{?MODULE,call_dirty_nif_exception,[1],_}|_] = Stk1,
 	    ok
     end,
     try
@@ -121,9 +120,8 @@ dirty_nif_exception(Config) when is_list(Config) ->
 	call_dirty_nif_exception(0),
 	ct:fail(expected_badarg)
     catch
-	error:badarg ->
-	    [{?MODULE,call_dirty_nif_exception,[0],_}|_] =
-		erlang:get_stacktrace(),
+	error:badarg:Stk2 ->
+	    [{?MODULE,call_dirty_nif_exception,[0],_}|_] = Stk2,
 	    ok
     end,
     %% this checks that a dirty NIF can raise various terms as
@@ -138,8 +136,8 @@ nif_raise_exceptions(NifFunc) ->
                             erlang:apply(?MODULE,NifFunc,[Term]),
                             ct:fail({expected,Term})
                         catch
-                            error:Term ->
-                                [{?MODULE,NifFunc,[Term],_}|_] = erlang:get_stacktrace(),
+                            error:Term:Stk ->
+                                [{?MODULE,NifFunc,[Term],_}|_] = Stk,
                                 ok
                         end
                 end, ok, ExcTerms).
@@ -151,6 +149,11 @@ dirty_scheduler_exit(Config) when is_list(Config) ->
     [ok] = mcall(Node,
                  [fun() ->
                           ok = erlang:load_nif(NifLib, []),
+                          %% Perform a dry run to ensure that all required code
+                          %% is loaded. Otherwise the test will fail since code
+                          %% loading is done through dirty IO and it won't make
+                          %% any progress during this test.
+                          _DryRun = test_dirty_scheduler_exit(),
 			  Start = erlang:monotonic_time(millisecond),
                           ok = test_dirty_scheduler_exit(),
 			  End = erlang:monotonic_time(millisecond),
@@ -171,19 +174,18 @@ test_dse(N,Pids) ->
     test_dse(N-1,[Pid|Pids]).
 
 kill_dse([],Killed) ->
-    wait_dse(Killed);
+    wait_dse(Killed, ok);
 kill_dse([Pid|Pids],AlreadyKilled) ->
     exit(Pid,kill),
     kill_dse(Pids,[Pid|AlreadyKilled]).
 
-wait_dse([]) ->
-    ok;
-wait_dse([Pid|Pids]) ->
+wait_dse([], Result) ->
+    Result;
+wait_dse([Pid|Pids], Result) ->
     receive
-        {'EXIT',Pid,Reason} ->
-	    killed = Reason
-    end,
-    wait_dse(Pids).
+        {'EXIT', Pid, killed} -> wait_dse(Pids, Result);
+        {'EXIT', Pid, _Other} -> wait_dse(Pids, failed)
+    end.
 
 dirty_call_while_terminated(Config) when is_list(Config) ->
     Me = self(),
@@ -287,9 +289,9 @@ access_dirty_heap(Dirty, RGL, N, R) ->
 %% dirty NIF where the main lock is needed for that access do not get
 %% blocked. Each test passes its pid to dirty_sleeper, which sends a
 %% 'ready' message when it's running on a dirty scheduler and just before
-%% it starts a 6 second sleep. When it receives the message, it verifies
+%% it starts a 2 second sleep. When it receives the message, it verifies
 %% that access to the dirty process is as it expects.  After the dirty
-%% process finishes its 6 second sleep but before it returns from the dirty
+%% process finishes its 2 second sleep but before it returns from the dirty
 %% scheduler, it sends a 'done' message. If the tester already received
 %% that message, the test fails because it means attempting to access the
 %% dirty process waited for that process to return to a regular scheduler,
@@ -353,7 +355,7 @@ dirty_process_trace(Config) when is_list(Config) ->
 			      error(missing_trace_return_message)
 		      end
 	      after
-		  6500 ->
+		  2500 ->
 		      error(missing_done_message)
 	      end,
 	      ok
@@ -380,7 +382,7 @@ code_purge(Config) when is_list(Config) ->
     Start = erlang:monotonic_time(),
     {Pid1, Mon1} = spawn_monitor(fun () ->
 				       dirty_code_test:func(fun () ->
-								    %% Sleep for 6 seconds
+								    %% Sleep for 2 seconds
 								    %% in dirty nif...
 								    dirty_sleeper()
 							    end)
@@ -388,7 +390,7 @@ code_purge(Config) when is_list(Config) ->
     {module, dirty_code_test} = erlang:load_module(dirty_code_test, Bin),
     {Pid2, Mon2} = spawn_monitor(fun () ->
 				       dirty_code_test:func(fun () ->
-								    %% Sleep for 6 seconds
+								    %% Sleep for 2 seconds
 								    %% in dirty nif...
 								    dirty_sleeper()
 							    end)
@@ -490,7 +492,7 @@ test_dirty_process_access(Start, Test, Finish) ->
 			 ok
 		 end
 	 after
-	     3000 ->
+	     1000 ->
 		 error(timeout)
 	 end,
     ok = Finish(NifPid).
diff --git a/erts/emulator/test/dirty_nif_SUITE_data/dirty_nif_SUITE.c b/erts/emulator/test/dirty_nif_SUITE_data/dirty_nif_SUITE.c
index 0321b9898f..2a8b999307 100644
--- a/erts/emulator/test/dirty_nif_SUITE_data/dirty_nif_SUITE.c
+++ b/erts/emulator/test/dirty_nif_SUITE_data/dirty_nif_SUITE.c
@@ -217,9 +217,9 @@ dirty_sleeper(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
     }
 
 #ifdef __WIN32__
-    Sleep(6000);
+    Sleep(2000);
 #else
-    sleep(6);
+    sleep(2);
 #endif
 
     if (argc == 1) {
diff --git a/erts/emulator/test/distribution_SUITE.erl b/erts/emulator/test/distribution_SUITE.erl
index 17cd1d1a3b..e40d346e10 100644
--- a/erts/emulator/test/distribution_SUITE.erl
+++ b/erts/emulator/test/distribution_SUITE.erl
@@ -35,13 +35,18 @@
 
 -include_lib("common_test/include/ct.hrl").
 
+%-define(Line, erlang:display({line,?LINE}),).
+-define(Line,).
+
 -export([all/0, suite/0, groups/0,
          ping/1, bulk_send_small/1,
+         group_leader/1,
+         optimistic_dflags/1,
          bulk_send_big/1, bulk_send_bigbig/1,
          local_send_small/1, local_send_big/1,
          local_send_legal/1, link_to_busy/1, exit_to_busy/1,
          lost_exit/1, link_to_dead/1, link_to_dead_new_node/1,
-         applied_monitor_node/1, ref_port_roundtrip/1, nil_roundtrip/1,
+         ref_port_roundtrip/1, nil_roundtrip/1,
          trap_bif_1/1, trap_bif_2/1, trap_bif_3/1,
          stop_dist/1,
          dist_auto_connect_never/1, dist_auto_connect_once/1,
@@ -61,6 +66,8 @@
 
 %% Internal exports.
 -export([sender/3, receiver2/2, dummy_waiter/0, dead_process/0,
+         group_leader_1/1,
+         optimistic_dflags_echo/0, optimistic_dflags_sender/1,
          roundtrip/1, bounce/1, do_dist_auto_connect/1, inet_rpc_server/1,
          dist_parallel_sender/3, dist_parallel_receiver/0,
          dist_evil_parallel_receiver/0]).
@@ -74,8 +81,10 @@ suite() ->
 
 all() ->
     [ping, {group, bulk_send}, {group, local_send},
+     group_leader,
+     optimistic_dflags,
      link_to_busy, exit_to_busy, lost_exit, link_to_dead,
-     link_to_dead_new_node, applied_monitor_node,
+     link_to_dead_new_node,
      ref_port_roundtrip, nil_roundtrip, stop_dist,
      {group, trap_bif}, {group, dist_auto_connect},
      dist_parallel_send, atom_roundtrip, unicode_atom_roundtrip,
@@ -124,6 +133,96 @@ ping(Config) when is_list(Config) ->
 
     ok.
 
+%% Test erlang:group_leader(_, ExternalPid), i.e. DOP_GROUP_LEADER
+group_leader(Config) when is_list(Config) ->
+    ?Line Sock = start_relay_node(group_leader_1, []),
+    ?Line Sock2 = start_relay_node(group_leader_2, []),
+    try
+        ?Line Node2 = inet_rpc_nodename(Sock2),
+        ?Line {ok, ok} = do_inet_rpc(Sock, ?MODULE, group_leader_1, [Node2])
+    after
+        ?Line stop_relay_node(Sock),
+        ?Line stop_relay_node(Sock2)
+    end,
+    ok.
+
+group_leader_1(Node2) ->
+    ?Line ExtPid = spawn(Node2, fun F() ->
+                                        receive {From, group_leader} ->
+                                                From ! {self(), group_leader, group_leader()}
+                                        end,
+                                        F()
+                                end),
+    ?Line GL1 = self(),
+    ?Line group_leader(GL1, ExtPid),
+    ?Line ExtPid ! {self(), group_leader},
+    ?Line {ExtPid, group_leader, GL1} = receive_one(),
+
+    %% Kill connection and repeat test when group_leader/2 triggers auto-connect
+    ?Line net_kernel:monitor_nodes(true),
+    ?Line net_kernel:disconnect(Node2),
+    ?Line {nodedown, Node2} = receive_one(),
+    ?Line GL2 = spawn(fun() -> dummy end),
+    ?Line group_leader(GL2, ExtPid),
+    ?Line {nodeup, Node2} = receive_one(),
+    ?Line ExtPid ! {self(), group_leader},
+    ?Line {ExtPid, group_leader, GL2} = receive_one(),
+    ok.
+
+%% Test optimistic distribution flags toward pending connections (DFLAG_DIST_HOPEFULLY)
+optimistic_dflags(Config) when is_list(Config) ->
+    ?Line Sender = start_relay_node(optimistic_dflags_sender, []),
+    ?Line Echo = start_relay_node(optimistic_dflags_echo, []),
+    try
+        ?Line {ok, ok} = do_inet_rpc(Echo, ?MODULE, optimistic_dflags_echo, []),
+
+        ?Line EchoNode = inet_rpc_nodename(Echo),
+        ?Line {ok, ok} = do_inet_rpc(Sender, ?MODULE, optimistic_dflags_sender, [EchoNode])
+    after
+        ?Line stop_relay_node(Sender),
+        ?Line stop_relay_node(Echo)
+    end,
+    ok.
+
+optimistic_dflags_echo() ->
+    P = spawn(fun F() ->
+                      receive {From, Term} ->
+                              From ! {self(), Term}
+                      end,
+                      F()
+              end),
+    register(optimistic_dflags_echo, P),
+    optimistic_dflags_echo ! {self(), hello},
+    {P, hello} = receive_one(),
+    ok.
+
+optimistic_dflags_sender(EchoNode) ->
+    ?Line net_kernel:monitor_nodes(true),
+
+    optimistic_dflags_do(EchoNode, <<1:1>>),
+    optimistic_dflags_do(EchoNode, fun lists:map/2),
+    ok.
+
+optimistic_dflags_do(EchoNode, Term) ->
+    ?Line {optimistic_dflags_echo, EchoNode} ! {self(), Term},
+    ?Line {nodeup, EchoNode} = receive_one(),
+    ?Line {EchoPid, Term} = receive_one(),
+    %% repeat with pid destination
+    ?Line net_kernel:disconnect(EchoNode),
+    ?Line {nodedown, EchoNode} = receive_one(),
+    ?Line EchoPid ! {self(), Term},
+    ?Line {nodeup, EchoNode} = receive_one(),
+    ?Line {EchoPid, Term} = receive_one(),
+
+    ?Line net_kernel:disconnect(EchoNode),
+    ?Line {nodedown, EchoNode} = receive_one(),
+    ok.
+
+
+receive_one() ->
+    receive M -> M after 1000 -> timeout end.
+
+
 bulk_send_small(Config) when is_list(Config) ->
     bulk_send(64, 32).
 
@@ -639,31 +738,11 @@ link_to_dead_new_node(Config) when is_list(Config) ->
     end,
     ok.
 
-%% Test that monitor_node/2 works when applied.
-applied_monitor_node(Config) when is_list(Config) ->
-    NonExisting = list_to_atom("__non_existing__@" ++ hostname()),
-
-    %% Tail-recursive call to apply (since the node is non-existing,
-    %% there will be a trap).
-
-    true = tail_apply(erlang, monitor_node, [NonExisting, true]),
-    [{nodedown, NonExisting}] = test_server:messages_get(),
-
-    %% Ordinary call (with trap).
-
-    true = apply(erlang, monitor_node, [NonExisting, true]),
-    [{nodedown, NonExisting}] = test_server:messages_get(),
-
-    ok.
-
-tail_apply(M, F, A) ->
-    apply(M, F, A).
-
 %% Test that sending a port or reference to another node and back again
 %% doesn't correct them in any way.
 ref_port_roundtrip(Config) when is_list(Config) ->
     process_flag(trap_exit, true),
-    Port = open_port({spawn, efile}, []),
+    Port = make_port(),
     Ref = make_ref(),
     {ok, Node} = start_node(ref_port_roundtrip),
     net_adm:ping(Node),
@@ -684,6 +763,9 @@ ref_port_roundtrip(Config) when is_list(Config) ->
     end,
     ok.
 
+make_port() ->
+    hd(erlang:ports()).
+
 roundtrip(Term) ->
     exit(Term).
 
@@ -786,8 +868,8 @@ dist_auto_connect_once(Config) when is_list(Config) ->
     {ok, pong} = do_inet_rpc(Sock2,net_adm,ping,[NN]),
     {ok,[NN2]} = do_inet_rpc(Sock,erlang,nodes,[]),
     {ok,[NN]} = do_inet_rpc(Sock2,erlang,nodes,[]),
-    [_,HostPartPeer] = string:tokens(atom_to_list(NN),"@"),
-    [_,MyHostPart] = string:tokens(atom_to_list(node()),"@"),
+    [_,HostPartPeer] = string:lexemes(atom_to_list(NN),"@"),
+    [_,MyHostPart] = string:lexemes(atom_to_list(node()),"@"),
     % Give net_kernel a chance to change the state of the node to up to.
     receive after 1000 -> ok end,
     case HostPartPeer of
@@ -1158,8 +1240,6 @@ contended_atom_cache_entry_test(Config, Type) ->
     spawn_link(
       SNode,
       fun () ->
-              erts_debug:set_internal_state(available_internal_state,
-                                            true),
               Master = self(),
               CIX = get_cix(),
               TestAtoms = case Type of
@@ -1244,7 +1324,7 @@ get_cix(CIX) when is_integer(CIX), CIX < 0 ->
 get_cix(CIX) when is_integer(CIX) ->
     get_cix(CIX,
             unwanted_cixs(),
-            erts_debug:get_internal_state(max_atom_out_cache_index)).
+            get_internal_state(max_atom_out_cache_index)).
 
 get_cix(CIX, Unwanted, MaxCIX) when CIX > MaxCIX ->
     get_cix(0, Unwanted, MaxCIX);
@@ -1256,8 +1336,8 @@ get_cix(CIX, Unwanted, MaxCIX) ->
 
 unwanted_cixs() ->
     lists:map(fun (Node) ->
-                      erts_debug:get_internal_state({atom_out_cache_index,
-                                                     Node})
+                      get_internal_state({atom_out_cache_index,
+                                          Node})
               end,
               nodes()).
 
@@ -1266,7 +1346,7 @@ get_conflicting_atoms(_CIX, 0) ->
     [];
 get_conflicting_atoms(CIX, N) ->
     Atom = list_to_atom("atom" ++ integer_to_list(erlang:unique_integer([positive]))),
-    case erts_debug:get_internal_state({atom_out_cache_index, Atom}) of
+    case get_internal_state({atom_out_cache_index, Atom}) of
         CIX ->
             [Atom|get_conflicting_atoms(CIX, N-1)];
         _ ->
@@ -1277,7 +1357,7 @@ get_conflicting_unicode_atoms(_CIX, 0) ->
     [];
 get_conflicting_unicode_atoms(CIX, N) ->
     Atom = string_to_atom([16#1f608] ++ "atom" ++ integer_to_list(erlang:unique_integer([positive]))),
-    case erts_debug:get_internal_state({atom_out_cache_index, Atom}) of
+    case get_internal_state({atom_out_cache_index, Atom}) of
         CIX ->
             [Atom|get_conflicting_unicode_atoms(CIX, N-1)];
         _ ->
@@ -1365,81 +1445,59 @@ bad_dist_structure(Config) when is_list(Config) ->
     start_monitor(Offender,P),
     P ! one,
     send_bad_structure(Offender, P,{?DOP_MONITOR_P_EXIT,'replace',P,normal},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
+
     start_monitor(Offender,P),
     send_bad_structure(Offender, P,{?DOP_MONITOR_P_EXIT,'replace',P,normal,normal},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
+
     start_link(Offender,P),
     send_bad_structure(Offender, P,{?DOP_LINK},0),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
+
     start_link(Offender,P),
     send_bad_structure(Offender, P,{?DOP_UNLINK,'replace'},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
+
     start_link(Offender,P),
     send_bad_structure(Offender, P,{?DOP_UNLINK,'replace',make_ref()},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
+
     start_link(Offender,P),
     send_bad_structure(Offender, P,{?DOP_UNLINK,make_ref(),P},0),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
+
     start_link(Offender,P),
     send_bad_structure(Offender, P,{?DOP_UNLINK,normal,normal},0),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
+
     start_monitor(Offender,P),
     send_bad_structure(Offender, P,{?DOP_MONITOR_P,'replace',P},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
+
     start_monitor(Offender,P),
     send_bad_structure(Offender, P,{?DOP_MONITOR_P,'replace',P,normal},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
+
     start_monitor(Offender,P),
     send_bad_structure(Offender, P,{?DOP_DEMONITOR_P,'replace',P},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
+
     start_monitor(Offender,P),
     send_bad_structure(Offender, P,{?DOP_DEMONITOR_P,'replace',P,normal},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
+
     send_bad_structure(Offender, P,{?DOP_EXIT,'replace',P},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_EXIT,make_ref(),normal,normal},0),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_EXIT_TT,'replace',token,P},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_EXIT_TT,make_ref(),token,normal,normal},0),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_EXIT2,'replace',P},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_EXIT2,make_ref(),normal,normal},0),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_EXIT2_TT,'replace',token,P},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_EXIT2_TT,make_ref(),token,normal,normal},0),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_GROUP_LEADER,'replace'},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_GROUP_LEADER,'replace','atomic'},2),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_GROUP_LEADER,'replace',P},0),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_REG_SEND_TT,'replace','',name},2,{message}),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_REG_SEND_TT,'replace','',name,token},0,{message}),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_REG_SEND,'replace',''},2,{message}),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_REG_SEND,'replace','',P},0,{message}),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_REG_SEND,'replace','',name},0,{message}),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_REG_SEND,'replace','',name,{token}},2,{message}),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_SEND_TT,'',P},0,{message}),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_SEND_TT,'',name,token},0,{message}),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_SEND,''},0,{message}),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_SEND,'',name},0,{message}),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     send_bad_structure(Offender, P,{?DOP_SEND,'',P,{token}},0,{message}),
-    pong = rpc:call(Victim, net_adm, ping, [Offender]),
     P ! two,
     P ! check_msgs,
     receive
@@ -1685,13 +1743,16 @@ bad_dist_ext_size(Config) when is_list(Config) ->
     start_node_monitors([Offender,Victim]),
 
     Parent = self(),
-    P = spawn_link(Victim,
+    P = spawn_opt(Victim,
                    fun () ->
                            Parent ! {self(), started},
                            receive check_msgs -> ok end,  %% DID CRASH HERE
                            bad_dist_ext_check_msgs([one]),
                            Parent ! {self(), messages_checked}
-                   end),
+                   end,
+                 [link,
+                  %% on_heap to force total_heap_size to inspect msg queue
+                  {message_queue_data, on_heap}]),
 
     receive {P, started} -> ok end,
     P ! one,
@@ -1714,6 +1775,7 @@ bad_dist_ext_size(Config) when is_list(Config) ->
 
     verify_still_up(Offender, Victim),
 
+    %% Let process_info(P, total_heap_size) find bad msg and disconnect
     rpc:call(Victim, erlang, process_info, [P, total_heap_size]),
 
     verify_down(Offender, connection_closed, Victim, killed),
@@ -1795,10 +1857,11 @@ send_bad_structure(Offender,Victim,Bad,WhereToPutSelf) ->
 send_bad_structure(Offender,Victim,Bad,WhereToPutSelf,PayLoad) ->
     Parent = self(),
     Done = make_ref(),
-    spawn(Offender,
+    spawn_link(Offender,
           fun () ->
                   Node = node(Victim),
                   pong = net_adm:ping(Node),
+                  erlang:monitor_node(Node, true),
                   DCtrl = dctrl(Node),
                   Bad1 = case WhereToPutSelf of
                              0 ->
@@ -1812,7 +1875,16 @@ send_bad_structure(Offender,Victim,Bad,WhereToPutSelf,PayLoad) ->
                       [] -> [];
                       _Other -> [dmsg_ext(PayLoad)]
                   end,
+
+                  receive {nodedown, Node} -> exit("premature nodedown")
+                  after 10 -> ok
+                  end,
+
                   dctrl_send(DCtrl, DData),
+
+                  receive {nodedown, Node} -> ok
+                  after 5000 -> exit("missing nodedown")
+                  end,
                   Parent ! {DData,Done}
           end),
     receive
@@ -1893,11 +1965,26 @@ send_bad_dhdr(BadNode, ToNode) when is_atom(BadNode), is_atom(ToNode) ->
     receive Done -> ok end.
 
 dctrl(Node) when is_atom(Node) ->
-    case catch erts_debug:get_internal_state(available_internal_state) of
-        true -> true;
-        _ -> erts_debug:set_internal_state(available_internal_state, true)
-    end,
-    erts_debug:get_internal_state({dist_ctrl, Node}).
+    get_internal_state({dist_ctrl, Node}).
+
+get_internal_state(Op) ->
+    try erts_debug:get_internal_state(Op) of
+        R -> R
+    catch
+        error:undef ->
+            erts_debug:set_internal_state(available_internal_state, true),
+            erts_debug:get_internal_state(Op)
+    end.
+
+set_internal_state(Op, Val) ->
+    try erts_debug:set_internal_state(Op, Val) of
+        R -> R
+    catch
+        error:undef ->
+            erts_debug:set_internal_state(available_internal_state, true),
+            erts_debug:set_internal_state(Op, Val)
+    end.
+
 
 dmsg_hdr() ->
     [131, % Version Magic
@@ -2040,11 +2127,9 @@ freeze_node(Node, MS) ->
     Freezer = self(),
     spawn_link(Node,
                fun () ->
-                       erts_debug:set_internal_state(available_internal_state,
-                                                     true),
                        dctrl_dop_send(Freezer, DoingIt),
                        receive after Own -> ok end,
-                       erts_debug:set_internal_state(block, MS+Own)
+                       set_internal_state(block, MS+Own)
                end),
     receive DoingIt -> ok end,
     receive after Own -> ok end.
@@ -2094,7 +2179,7 @@ start_relay_node(Node, Args) ->
                                       [{args, Args ++
                                         " -setcookie "++Cookie++" -pa "++Pa++" "++
                                         RunArg}]),
-    [N,H] = string:tokens(atom_to_list(NN),"@"),
+    [N,H] = string:lexemes(atom_to_list(NN),"@"),
     {ok, Sock} = gen_tcp:accept(LSock),
     pang = net_adm:ping(NN),
     {N,H,Sock}.
@@ -2248,8 +2333,7 @@ forever(Fun) ->
     forever(Fun).
 
 abort(Why) ->
-    erts_debug:set_internal_state(available_internal_state, true),
-    erts_debug:set_internal_state(abort, Why).
+    set_internal_state(abort, Why).
 
 
 start_busy_dist_port_tracer() ->
diff --git a/erts/emulator/test/driver_SUITE.erl b/erts/emulator/test/driver_SUITE.erl
index 33d0b708cf..6446d5f6d2 100644
--- a/erts/emulator/test/driver_SUITE.erl
+++ b/erts/emulator/test/driver_SUITE.erl
@@ -1192,9 +1192,9 @@ check_driver_system_info_result(Result) ->
     io:format("All names: ~p~n", [?EXPECTED_SYSTEM_INFO_NAMES]),
     io:format("Result: ~p~n", [Result]),
     {[], Ns, DDVSN} = chk_sis(lists:map(fun (Str) ->
-                                                string:tokens(Str, "=")
+                                                string:lexemes(Str, "=")
                                         end,
-                                        string:tokens(Result, " ")),
+                                        string:lexemes(Result, " ")),
                               ?EXPECTED_SYSTEM_INFO_NAMES),
     case {DDVSN,
           drv_vsn_str2tup(erlang:system_info(driver_version))} of
@@ -2438,7 +2438,7 @@ wait_until(Fun) ->
     end.
 
 drv_vsn_str2tup(Str) ->
-    [Major, Minor] = string:tokens(Str, "."),
+    [Major, Minor] = string:lexemes(Str, "."),
     {list_to_integer(Major), list_to_integer(Minor)}.
 
 %% Build port data from a template.
@@ -2614,8 +2614,8 @@ rpc(Config, Fun) ->
                                 Result
                                     = try Fun() of
                                           Res -> Res
-                                      catch E:R ->
-                                              {'EXIT',E,R,erlang:get_stacktrace()}
+                                      catch E:R:Stk ->
+                                              {'EXIT',E,R,Stk}
                                       end,
                                 Self ! {Ref, Result}
                         end),
diff --git a/erts/emulator/test/dump_SUITE.erl b/erts/emulator/test/dump_SUITE.erl
new file mode 100644
index 0000000000..38fa198ea6
--- /dev/null
+++ b/erts/emulator/test/dump_SUITE.erl
@@ -0,0 +1,125 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2005-2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(dump_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+
+-export([all/0, suite/0, init_per_testcase/2, end_per_testcase/2]).
+
+-export([signal_abort/1]).
+
+-export([load/0]).
+
+-include_lib("kernel/include/file.hrl").
+
+suite() ->
+    [{ct_hooks,[ts_install_cth]},
+     {timetrap, {minutes, 2}}].
+
+all() ->
+    [signal_abort].
+
+init_per_testcase(signal_abort, Config) ->
+    SO = erlang:system_info(schedulers_online),
+    erts_debug:set_internal_state(available_internal_state, true),
+    Dump = erts_debug:get_internal_state(scheduler_dump),
+    erts_debug:set_internal_state(available_internal_state, false),
+    if SO < 3 ->
+            {skip, "not enough schedulers"};
+       not Dump ->
+            {skip, "the platform does not support scheduler dump"};
+       Dump ->
+            Config
+    end.
+
+end_per_testcase(_, Config) ->
+    Config.
+
+%%%
+%%% The test cases -------------------------------------------------------------
+%%%
+
+%% Test that a snapshot is taken of other schedulers using a signal
+%% when a crash dump is generated.
+signal_abort(Config) ->
+
+    Dump = filename:join(proplists:get_value(priv_dir, Config),"signal_abort.dump"),
+
+    {ok, Node} = start_node(Config),
+
+    _P1 = spawn(Node, ?MODULE, load, []),
+    _P2 = spawn(Node, ?MODULE, load, []),
+    _P3 = spawn(Node, ?MODULE, load, []),
+    _P4 = spawn(Node, ?MODULE, load, []),
+    _P5 = spawn(Node, ?MODULE, load, []),
+    _P6 = spawn(Node, ?MODULE, load, []),
+
+    timer:sleep(500),
+
+    true = rpc:call(Node, os, putenv, ["ERL_CRASH_DUMP",Dump]),
+    rpc:call(Node, erlang, halt, ["dump"]),
+
+    {ok, Bin} = get_dump_when_done(Dump),
+
+    ct:log("~s",[Bin]),
+
+    {match, Matches} = re:run(Bin,"Current Process: <",[global]),
+
+    ct:log("Found ~p",[Matches]),
+
+    true = length(Matches) > 1,
+
+    file:delete(Dump),
+
+    ok.
+
+get_dump_when_done(Dump) ->
+    case file:read_file_info(Dump) of
+        {ok, #file_info{ size = Sz }} ->
+            get_dump_when_done(Dump, Sz);
+        {error, enoent} ->
+            timer:sleep(100),
+            get_dump_when_done(Dump)
+    end.
+
+get_dump_when_done(Dump, Sz) ->
+    timer:sleep(100),
+    case file:read_file_info(Dump) of
+        {ok, #file_info{ size = Sz }} ->
+            file:read_file(Dump);
+        {ok, #file_info{ size = NewSz }} ->
+            get_dump_when_done(Dump, NewSz)
+    end.
+
+load() ->
+    lists:seq(1,10000),
+    load().
+
+start_node(Config) when is_list(Config) ->
+    Pa = filename:dirname(code:which(?MODULE)),
+    Name = list_to_atom(atom_to_list(?MODULE)
+                        ++ "-"
+                        ++ atom_to_list(proplists:get_value(testcase, Config))
+                        ++ "-"
+                        ++ integer_to_list(erlang:system_time(second))
+                        ++ "-"
+                        ++ integer_to_list(erlang:unique_integer([positive]))),
+    test_server:start_node(Name, slave, [{args, "-pa "++Pa}]).
diff --git a/erts/emulator/test/efile_SUITE.erl b/erts/emulator/test/efile_SUITE.erl
index 08d5597d78..16d581a567 100644
--- a/erts/emulator/test/efile_SUITE.erl
+++ b/erts/emulator/test/efile_SUITE.erl
@@ -19,12 +19,9 @@
 
 -module(efile_SUITE).
 -export([all/0, suite/0]).
--export([async_dist/1,
-         iter_max_files/1,
-         proc_zero_sized_files/1
-        ]).
+-export([iter_max_files/1, proc_zero_sized_files/1]).
 
--export([do_iter_max_files/2, do_async_dist/1]).
+-export([do_iter_max_files/2]).
 
 -include_lib("common_test/include/ct.hrl").
 -include_lib("stdlib/include/assert.hrl").
@@ -32,84 +29,7 @@
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
 all() -> 
-    [iter_max_files, async_dist, proc_zero_sized_files].
-
-do_async_dist(Dir) ->
-    X = 100,
-    AT = erlang:system_info(thread_pool_size),
-    Keys = file_keys(Dir,AT*X,[],[]),
-    Tab = ets:new(x,[ordered_set]),
-    [ ets:insert(Tab,{N,0}) || N <- lists:seq(0,AT-1) ],
-    [ ets:update_counter(Tab,(N rem AT),1) || N <- Keys ],
-    Res = [ V || {_,V} <- ets:tab2list(Tab) ],
-    ets:delete(Tab),
-    {Res, sdev(Res)/X}.
-
-sdev(List) ->
-    Len = length(List),
-    Mean = lists:sum(List)/Len,
-    math:sqrt(lists:sum([ (X - Mean) * (X - Mean) || X <- List ]) / Len).
-
-file_keys(_,0,FdList,FnList) ->
-    [ file:close(FD) || FD <- FdList ],
-    [ file:delete(FN) || FN <- FnList ],
-    [];
-file_keys(Dir,Num,FdList,FnList) ->
-    Name = "dummy"++integer_to_list(Num),
-    FN = filename:join([Dir,Name]),
-    case file:open(FN,[write,raw]) of
-        {ok,FD} ->
-            {file_descriptor,prim_file,{Port,_}} = FD,
-            <<X:32/integer-big>> = 
-            iolist_to_binary(erlang:port_control(Port,$K,[])),
-            [X | file_keys(Dir,Num-1,[FD|FdList],[FN|FnList])];
-        {error,_} ->
-            % Try freeing up FD's if there are any
-            case FdList of 
-                [] ->
-                    exit({cannot_open_file,FN});
-                _ ->
-                    [ file:close(FD) || FD <- FdList ],
-                    [ file:delete(F) || F <- FnList ],
-                    file_keys(Dir,Num,[],[])
-            end
-    end.
-
-%% Check that the distribution of files over async threads is fair
-async_dist(Config) when is_list(Config) ->
-    DataDir = proplists:get_value(data_dir,Config),
-    Dir = filename:dirname(code:which(?MODULE)),
-    AsyncSizes = [7,10,100,255,256,64,63,65],
-    Max = 0.5,
-
-    lists:foreach(fun(Size) ->
-                          {ok,Node} = 
-                          test_server:start_node
-                          (test_iter_max_files,slave,
-                           [{args,
-                             "+A "++integer_to_list(Size)++
-                             " -pa " ++ Dir}]),
-                          {Distr,SD} = rpc:call(Node,?MODULE,do_async_dist,
-                                                [DataDir]),
-                          test_server:stop_node(Node),
-                          if
-                              SD > Max ->
-                                  io:format("Bad async queue distribution for "
-                                            "~p async threads:~n"
-                                            "    Standard deviation is ~p~n"
-                                            "    Key distribution:~n    ~lp~n",
-                                            [Size,SD,Distr]),
-                                  exit({bad_async_dist,Size,SD,Distr});
-                              true ->
-                                  io:format("OK async queue distribution for "
-                                            "~p async threads:~n"
-                                            "    Standard deviation is ~p~n"
-                                            "    Key distribution:~n    ~lp~n",
-                                            [Size,SD,Distr]),
-                                  ok
-                          end
-                  end, AsyncSizes),
-    ok.
+    [iter_max_files, proc_zero_sized_files].
 
 %%
 %% Open as many files as possible. Do this several times and check 
@@ -117,6 +37,12 @@ async_dist(Config) when is_list(Config) ->
 %%
 
 iter_max_files(Config) when is_list(Config) ->
+    case os:type() of
+        {win32, _} -> {skip, "Windows lacks a hard limit on file handles"};
+        _ -> iter_max_files_1(Config)
+    end.
+
+iter_max_files_1(Config) ->
     DataDir = proplists:get_value(data_dir,Config),
     TestFile = filename:join(DataDir, "existing_file"),
     N = 10,
diff --git a/erts/emulator/test/erl_link_SUITE.erl b/erts/emulator/test/erl_link_SUITE.erl
index d8c5b663e3..a66ca7a57d 100644
--- a/erts/emulator/test/erl_link_SUITE.erl
+++ b/erts/emulator/test/erl_link_SUITE.erl
@@ -200,13 +200,16 @@ monitor_nodes(Config) when is_list(Config) ->
     monitor_node(A, true),
     check_monitor_node(self(), A, 1),
     check_monitor_node(self(), B, 3),
+    ok = receive {nodedown, C} -> ok after 1000 -> timeout end,
+    %%OTP-21: monitor_node(_,false) does not trigger auto-connect anymore
+    %%        and therefore no nodedown if it fails.
+    %%ok = receive {nodedown, C} -> ok after 1000 -> timeout end,
+    ok = receive {nodedown, C} -> ok after 1000 -> timeout end,
+    ok = receive {nodedown, D} -> ok after 1000 -> timeout end,
+    ok = receive {nodedown, D} -> ok after 1000 -> timeout end,
     check_monitor_node(self(), C, 0),
     check_monitor_node(self(), D, 0),
-    receive {nodedown, C} -> ok end,
-    receive {nodedown, C} -> ok end,
-    receive {nodedown, C} -> ok end,
-    receive {nodedown, D} -> ok end,
-    receive {nodedown, D} -> ok end,
+
     stop_node(A),
     receive {nodedown, A} -> ok end,
     check_monitor_node(self(), A, 0),
diff --git a/erts/emulator/test/exception_SUITE.erl b/erts/emulator/test/exception_SUITE.erl
index 0f27251fcb..da0292f385 100644
--- a/erts/emulator/test/exception_SUITE.erl
+++ b/erts/emulator/test/exception_SUITE.erl
@@ -31,6 +31,10 @@
 -include_lib("common_test/include/ct.hrl").
 -import(lists, [foreach/2]).
 
+%% The range analysis of the HiPE compiler results in a system limit error
+%% during compilation instead of at runtime, so do not perform this analysis.
+-compile([{hipe, [no_icode_range]}]).
+
 suite() ->
     [{ct_hooks,[ts_install_cth]},
      {timetrap, {minutes, 1}}].
@@ -391,12 +395,12 @@ raise(Conf) when is_list(Conf) ->
     try 
         try foo({'div',{1,0}}) 
         catch
-            error:badarith ->
+            error:badarith:A0 ->
                 put(raise, A0 = erlang:get_stacktrace()),
                 erlang:raise(error, badarith, A0)
         end
     catch
-        error:badarith ->
+        error:badarith:A1 ->
             A1 = erlang:get_stacktrace(),
             A1 = get(raise)
     end,
diff --git a/erts/emulator/test/guard_SUITE.erl b/erts/emulator/test/guard_SUITE.erl
index 1a93a9f5c2..f2c1595392 100644
--- a/erts/emulator/test/guard_SUITE.erl
+++ b/erts/emulator/test/guard_SUITE.erl
@@ -500,7 +500,7 @@ all_types() ->
      {atom, xxxx},
      {ref, make_ref()},
      {pid, self()},
-     {port, open_port({spawn, efile}, [])},
+     {port, make_port()},
      {function, fun(_) -> "" end},
      {function, fun erlang:abs/1},
      {binary, list_to_binary([])},
@@ -551,4 +551,7 @@ type_test(bitstring, X) when is_bitstring(X) ->
 type_test(function, X) when is_function(X) ->
     function.
 
+make_port() ->
+    hd(erlang:ports()).
+
 id(I) -> I.
diff --git a/erts/emulator/test/lcnt_SUITE.erl b/erts/emulator/test/lcnt_SUITE.erl
index 504b9b54cf..4e52c2813c 100644
--- a/erts/emulator/test/lcnt_SUITE.erl
+++ b/erts/emulator/test/lcnt_SUITE.erl
@@ -28,14 +28,16 @@
      init_per_testcase/2, end_per_testcase/2]).
 
 -export(
-    [toggle_lock_counting/1, error_on_invalid_category/1, preserve_locks/1]).
+    [toggle_lock_counting/1, error_on_invalid_category/1, preserve_locks/1,
+     registered_processes/1, registered_db_tables/1]).
 
 suite() ->
     [{ct_hooks,[ts_install_cth]},
      {timetrap, {seconds, 10}}].
 
 all() ->
-    [toggle_lock_counting, error_on_invalid_category, preserve_locks].
+    [toggle_lock_counting, error_on_invalid_category, preserve_locks,
+     registered_processes, registered_db_tables].
 
 init_per_suite(Config) ->
     case erlang:system_info(lock_counting) of
@@ -154,3 +156,25 @@ preserve_locks(Config) when is_list(Config) ->
 error_on_invalid_category(Config) when is_list(Config) ->
     {error, badarg, q_invalid} = erts_debug:lcnt_control(mask, [q_invalid]),
     ok.
+
+registered_processes(Config) when is_list(Config) ->
+    %% There ought to be at least one registered process (init/code_server)
+    erts_debug:lcnt_control(mask, [process]),
+    [_, {locks, ProcLocks}] = erts_debug:lcnt_collect(),
+    true = lists:any(
+        fun
+            ({proc_main, RegName, _, _}) when is_atom(RegName) -> true;
+            (_Lock) -> false
+        end, ProcLocks),
+    ok.
+
+registered_db_tables(Config) when is_list(Config) ->
+    %% There ought to be at least one registered table (code)
+    erts_debug:lcnt_control(mask, [db]),
+    [_, {locks, DbLocks}] = erts_debug:lcnt_collect(),
+    true = lists:any(
+        fun
+            ({db_tab, RegName, _, _}) when is_atom(RegName) -> true;
+            (_Lock) -> false
+        end, DbLocks),
+    ok.
diff --git a/erts/emulator/test/map_SUITE.erl b/erts/emulator/test/map_SUITE.erl
index 02f3c89318..c9e971af8a 100644
--- a/erts/emulator/test/map_SUITE.erl
+++ b/erts/emulator/test/map_SUITE.erl
@@ -52,7 +52,7 @@
          t_bif_map_values/1,
          t_bif_map_to_list/1,
          t_bif_map_from_list/1,
-         t_bif_erts_internal_maps_to_list/1,
+         t_bif_map_next/1,
 
          %% erlang
          t_erlang_hash/1,
@@ -119,7 +119,7 @@ all() -> [t_build_and_match_literals, t_build_and_match_literals_large,
           t_bif_map_update,
           t_bif_map_values,
           t_bif_map_to_list, t_bif_map_from_list,
-          t_bif_erts_internal_maps_to_list,
+          t_bif_map_next,
 
           %% erlang
           t_erlang_hash, t_map_encode_decode,
@@ -2364,41 +2364,71 @@ t_bif_map_from_list(Config) when is_list(Config) ->
     {'EXIT', {badarg,_}} = (catch maps:from_list(id(42))),
     ok.
 
-t_bif_erts_internal_maps_to_list(Config) when is_list(Config) ->
-    %% small maps
-    [] = erts_internal:maps_to_list(#{},-1),
-    [] = erts_internal:maps_to_list(#{},-2),
-    [] = erts_internal:maps_to_list(#{},10),
-    [{a,1},{b,2}] = lists:sort(erts_internal:maps_to_list(#{a=>1,b=>2}, 2)),
-    [{a,1},{b,2}] = lists:sort(erts_internal:maps_to_list(#{a=>1,b=>2}, -1)),
-    [{_,_}] = erts_internal:maps_to_list(#{a=>1,b=>2}, 1),
-    [{a,1},{b,2},{c,3}] = lists:sort(erts_internal:maps_to_list(#{c=>3,a=>1,b=>2},-2)),
-    [{a,1},{b,2},{c,3}] = lists:sort(erts_internal:maps_to_list(#{c=>3,a=>1,b=>2},3)),
-    [{a,1},{b,2},{c,3}] = lists:sort(erts_internal:maps_to_list(#{c=>3,a=>1,b=>2},5)),
-    [{_,_},{_,_}] = erts_internal:maps_to_list(#{c=>3,a=>1,b=>2},2),
-    [{_,_}] = erts_internal:maps_to_list(#{c=>3,a=>1,b=>2},1),
-    [] = erts_internal:maps_to_list(#{c=>3,a=>1,b=>2},0),
-
-    %% big maps
-    M = maps:from_list([{I,ok}||I <- lists:seq(1,500)]),
-    [] = erts_internal:maps_to_list(M,0),
-    [{_,_}] = erts_internal:maps_to_list(M,1),
-    [{_,_},{_,_}] = erts_internal:maps_to_list(M,2),
-    Ls1 = erts_internal:maps_to_list(M,10),
-    10 = length(Ls1),
-    Ls2 = erts_internal:maps_to_list(M,20),
-    20 = length(Ls2),
-    Ls3 = erts_internal:maps_to_list(M,120),
-    120 = length(Ls3),
-    Ls4 = erts_internal:maps_to_list(M,-1),
-    500 = length(Ls4),
+t_bif_map_next(Config) when is_list(Config) ->
 
-    %% error cases
-    {'EXIT', {{badmap,[{a,b},b]},_}} = (catch erts_internal:maps_to_list(id([{a,b},b]),id(1))),
-    {'EXIT', {badarg,_}} = (catch erts_internal:maps_to_list(id(#{}),id(a))),
-    {'EXIT', {badarg,_}} = (catch erts_internal:maps_to_list(id(#{1=>2}),id(<<>>))),
+    erts_debug:set_internal_state(available_internal_state, true),
+
+    try
+
+        none = maps:next(maps:iterator(id(#{}))),
+
+        verify_iterator(#{}),
+        verify_iterator(#{a => 1, b => 2, c => 3}),
+
+        %% Use fatmap in order to test iterating in very deep maps
+        FM = fatmap(43),
+        verify_iterator(FM),
+
+        {'EXIT', {{badmap,[{a,b},b]},_}} = (catch maps:iterator(id([{a,b},b]))),
+        {'EXIT', {badarg,_}} = (catch maps:next(id(a))),
+        {'EXIT', {badarg,_}} = (catch maps:next(id([a|FM]))),
+        {'EXIT', {badarg,_}} = (catch maps:next(id([1|#{}]))),
+        {'EXIT', {badarg,_}} = (catch maps:next(id([-1|#{}]))),
+        {'EXIT', {badarg,_}} = (catch maps:next(id([-1|FM]))),
+        {'EXIT', {badarg,_}} = (catch maps:next(id([16#FFFFFFFFFFFFFFFF|FM]))),
+        {'EXIT', {badarg,_}} = (catch maps:next(id([-16#FFFFFFFFFFFFFFFF|FM]))),
+
+        %% This us a whitebox test that the error code works correctly.
+        %% It uses a path for a tree of depth 4 and tries to do next on
+        %% each of those paths.
+        (fun F(0) -> ok;
+             F(N) ->
+                 try maps:next([N|FM]) of
+                     none ->
+                         F(N-1);
+                     {_K,_V,_I} ->
+                         F(N-1)
+                 catch error:badarg ->
+                         F(N-1)
+                 end
+         end)(16#FFFF),
+
+        ok
+    after
+            erts_debug:set_internal_state(available_internal_state, false)
+    end.
+
+verify_iterator(Map) ->
+    KVs = t_fold(fun(K, V, A) -> [{K, V} | A] end, [], Map),
+
+    %% Verify that KVs created by iterating Map is of
+    %% correct size and contains all elements
+    true = length(KVs) == maps:size(Map),
+    [maps:get(K, Map) || {K, _} <- KVs],
     ok.
 
+
+t_fold(Fun, Init, Map) ->
+    t_fold_1(Fun, Init, maps:iterator(Map)).
+
+t_fold_1(Fun, Acc, Iter) ->
+    case maps:next(Iter) of
+        {K, V, NextIter} ->
+            t_fold_1(Fun, Fun(K,V,Acc), NextIter);
+        none ->
+            Acc
+    end.
+
 t_bif_build_and_check(Config) when is_list(Config) ->
     ok = check_build_and_remove(750,[fun(K) -> [K,K] end,
 				     fun(K) -> [float(K),K] end,
diff --git a/erts/emulator/test/match_spec_SUITE.erl b/erts/emulator/test/match_spec_SUITE.erl
index 92ddc23592..08a7b4560c 100644
--- a/erts/emulator/test/match_spec_SUITE.erl
+++ b/erts/emulator/test/match_spec_SUITE.erl
@@ -21,7 +21,7 @@
 -module(match_spec_SUITE).
 
 -export([all/0, suite/0, not_run/1]).
--export([test_1/1, test_2/1, test_3/1, bad_match_spec_bin/1,
+-export([test_1/1, test_2/1, test_3/1, caller_and_return_to/1, bad_match_spec_bin/1,
 	 trace_control_word/1, silent/1, silent_no_ms/1, silent_test/1,
 	 ms_trace2/1, ms_trace3/1, ms_trace_dead/1, boxed_and_small/1,
 	 destructive_in_test_bif/1, guard_exceptions/1,
@@ -47,7 +47,7 @@ suite() ->
 all() -> 
     case test_server:is_native(match_spec_SUITE) of
 	false ->
-	    [test_1, test_2, test_3, bad_match_spec_bin,
+	    [test_1, test_2, test_3, caller_and_return_to, bad_match_spec_bin,
 	     trace_control_word, silent, silent_no_ms, silent_test, ms_trace2,
 	     ms_trace3, ms_trace_dead, boxed_and_small, destructive_in_test_bif,
 	     guard_exceptions, unary_plus, unary_minus, fpe,
@@ -180,6 +180,50 @@ test_3(Config) when is_list(Config) ->
     collect(P1, [{trace, P1, call, {?MODULE, f2, [a, b]}, [true]}]),
     ok.
 
+%% Test that caller and return to work as they should
+%% There was a bug where caller would be undefined when return_to was set
+%% for r the bif erlang:put().
+caller_and_return_to(Config) ->
+    tr(
+      fun do_put_wrapper/0,
+      fun (Tracee) ->
+              MsgCaller = [{'_',[],[{message,{caller}}]}],
+              1 = erlang:trace(Tracee, true, [call,return_to]),
+              1 = erlang:trace_pattern( {?MODULE,do_put,1}, MsgCaller, [local]),
+              1 = erlang:trace_pattern( {?MODULE,do_the_put,1}, MsgCaller, [local]),
+              1 = erlang:trace_pattern( {erlang,integer_to_list,1}, MsgCaller, [local]),
+              1 = erlang:trace_pattern( {erlang,put,2}, MsgCaller, [local]),
+
+              [{trace,Tracee,call,{?MODULE,do_put,[test]},{?MODULE,do_put_wrapper,0}},
+               {trace,Tracee,call,{?MODULE,do_the_put,[test]},{?MODULE,do_put,1}},
+               {trace,Tracee,call,{erlang,integer_to_list,[1]},{?MODULE,do_the_put,1}},
+               {trace,Tracee,return_to,{?MODULE,do_the_put,1}},
+               {trace,Tracee,call,{erlang,put,[test,"1"]},{?MODULE,do_put,1}},
+               {trace,Tracee,return_to,{?MODULE,do_put,1}},
+
+               %% These last trace messages are a bit strange...
+               %% if call tracing had been enabled for do_put_wrapper
+               %% then caller and return_to would have been {?MODULE,do_put_wrapper,1}
+               %% but since it is not, they are set to do_put instead, but we still
+               %% get the do_put_wrapper return_to message...
+               {trace,Tracee,call,{erlang,integer_to_list,[2]},{?MODULE,do_put,1}},
+               {trace,Tracee,return_to,{?MODULE,do_put,1}},
+               {trace,Tracee,return_to,{?MODULE,do_put_wrapper,0}}
+              ]
+      end),
+    ok.
+
+do_put_wrapper() ->
+    do_put(test),
+    ok.
+
+do_put(Var) ->
+    do_the_put(Var),
+    erlang:integer_to_list(id(2)).
+do_the_put(Var) ->
+    Lst = erlang:integer_to_list(id(1)),
+    erlang:put(Var, Lst).
+
 otp_9422(Config) when is_list(Config) ->
     Laps = 10000,
     Fun1 = fun() -> otp_9422_tracee() end,
diff --git a/erts/emulator/test/nif_SUITE.erl b/erts/emulator/test/nif_SUITE.erl
index bec2291867..85c302e310 100644
--- a/erts/emulator/test/nif_SUITE.erl
+++ b/erts/emulator/test/nif_SUITE.erl
@@ -2257,9 +2257,8 @@ nif_schedule(Config) when is_list(Config) ->
     {B,A} = call_nif_schedule(A, B),
     ok = try call_nif_schedule(1, 2)
 	 catch
-	     error:badarg ->
-		 [{?MODULE,call_nif_schedule,[1,2],_}|_] =
-		     erlang:get_stacktrace(),
+	     error:badarg:Stk ->
+		 [{?MODULE,call_nif_schedule,[1,2],_}|_] = Stk,
 		 ok
 	 end,
     ok.
@@ -2429,8 +2428,8 @@ nif_raise_exceptions(NifFunc) ->
                             erlang:apply(?MODULE,NifFunc,[Term]),
                             ct:fail({expected,Term})
                         catch
-                            error:Term ->
-                                [{?MODULE,NifFunc,[Term],_}|_] = erlang:get_stacktrace(),
+                            error:Term:Stk ->
+                                [{?MODULE,NifFunc,[Term],_}|_] = Stk,
                                 ok
                         end
                 end, ok, ExcTerms).
@@ -3037,14 +3036,17 @@ nif_ioq(Config) ->
          {enqbraw,a},
          {enqbraw,a, 5},
          {peek,   a},
+         {peek_head,  a},
          {deq,    a, 42},
 
          %% Test enqv
          {enqv,   a, 2, 100},
+         {peek_head,  a},
          {deq,    a, all},
 
          %% This skips all elements but one in the iolist
          {enqv,   a, 5, iolist_size(nif_ioq_payload(5)) - 1},
+         {peek_head,  a},
          {peek,   a},
 
          %% Test to enqueue a bunch of refc binaries
@@ -3074,9 +3076,13 @@ nif_ioq(Config) ->
 
     Q = ioq_nif(create),
 
+    false = ioq_nif(peek_head, Q),
+
     {'EXIT', {badarg, _}} = (catch ioq_nif(deq, Q, 1)),
     {'EXIT', {badarg, _}} = (catch ioq_nif(enqv, Q, 1, 1234)),
 
+    false = ioq_nif(peek_head, Q),
+
     {'EXIT', {badarg, _}} = (catch ioq_nif(enqv, Q, [atom_in_list], 0)),
     {'EXIT', {badarg, _}} = (catch ioq_nif(enqv, Q, [make_ref()], 0)),
     {'EXIT', {badarg, _}} = (catch ioq_nif(enqv, Q, [256], 0)),
@@ -3085,6 +3091,8 @@ nif_ioq(Config) ->
     {'EXIT', {badarg, _}} = (catch ioq_nif(enqv, Q, [1 bsl 64], 0)),
     {'EXIT', {badarg, _}} = (catch ioq_nif(enqv, Q, [{tuple}], 0)),
 
+    false = ioq_nif(peek_head, Q),
+
     {'EXIT', {badarg, _}} = (catch ioq_nif(inspect,  [atom_in_list], use_stack)),
     {'EXIT', {badarg, _}} = (catch ioq_nif(inspect,  [make_ref()], no_stack)),
     {'EXIT', {badarg, _}} = (catch ioq_nif(inspect,  [256], use_stack)),
@@ -3145,6 +3153,20 @@ nif_ioq_run([{peek, Name} = H|T], State) ->
 
     true = iolist_to_binary(B) == iolist_to_binary(Data),
     nif_ioq_run(T, State);
+nif_ioq_run([{peek_head, Name} = H|T], State) ->
+    #{ q := IOQ, b := B } = maps:get(Name, State),
+    RefData = iolist_to_binary(B),
+
+    ct:log("~p", [H]),
+
+    {true, QueueHead} = ioq_nif(peek_head, IOQ),
+    true = byte_size(QueueHead) > 0,
+
+    {RefHead, _Tail} = split_binary(RefData, byte_size(QueueHead)),
+
+    true = QueueHead =:= RefHead,
+
+    nif_ioq_run(T, State);
 nif_ioq_run([{deq, Name, all}|T], State) ->
     #{ q := IOQ, b := B } = maps:get(Name, State),
     Size = ioq_nif(size, IOQ),
diff --git a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c
index 79560a38aa..fa9ae1015c 100644
--- a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c
+++ b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c
@@ -3403,6 +3403,15 @@ static ERL_NIF_TERM ioq(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
 		return enif_make_badarg(env);
 	    else
 		return enif_make_atom(env, "true");
+        } else if (enif_is_identical(argv[0], enif_make_atom(env, "peek_head"))) {
+            ERL_NIF_TERM head_term;
+
+            if(enif_ioq_peek_head(env, ioq->q, NULL, &head_term)) {
+                return enif_make_tuple2(env,
+                    enif_make_atom(env, "true"), head_term);
+            }
+
+            return enif_make_atom(env, "false");
         } else if (enif_is_identical(argv[0], enif_make_atom(env, "peek"))) {
             int iovlen, num, i, off = 0;
             SysIOVec *iov = enif_ioq_peek(ioq->q, &iovlen);
diff --git a/erts/emulator/test/node_container_SUITE.erl b/erts/emulator/test/node_container_SUITE.erl
index be90f929df..7df001fec5 100644
--- a/erts/emulator/test/node_container_SUITE.erl
+++ b/erts/emulator/test/node_container_SUITE.erl
@@ -966,6 +966,8 @@ check_refc(ThisNodeName,ThisCreation,Table,EntryList) when is_list(EntryList) ->
                         {case Referrer of
                              {system,delayed_delete_timer} ->
                                  true;
+                             {system,thread_progress_delete_timer} ->
+                                 true;
                              _ ->
                                  DDT
                          end,
diff --git a/erts/emulator/test/num_bif_SUITE.erl b/erts/emulator/test/num_bif_SUITE.erl
index 1c76eb8019..17555d63c6 100644
--- a/erts/emulator/test/num_bif_SUITE.erl
+++ b/erts/emulator/test/num_bif_SUITE.erl
@@ -145,7 +145,7 @@ t_float_to_string(Config) when is_list(Config) ->
 				     123456789012345678.0, [{decimals, 237}])),
     {'EXIT', {badarg, _}} = (catch float_to_binary(
 				     123456789012345678.0, [{decimals, 237}])),
-    test_fts("1." ++ string:copies("0", 249) ++ "e+00",
+    test_fts("1." ++ lists:duplicate(249, $0) ++ "e+00",
 	     1.0,  [{scientific, 249}, compact]),
 
     X1 = float_to_list(1.0),
diff --git a/erts/emulator/test/port_SUITE.erl b/erts/emulator/test/port_SUITE.erl
index 730a17d7e8..e46665a881 100644
--- a/erts/emulator/test/port_SUITE.erl
+++ b/erts/emulator/test/port_SUITE.erl
@@ -1035,6 +1035,9 @@ huge_env(Config) when is_list(Config) ->
     try erlang:open_port({spawn,Cmd},[exit_status, {env, Env}]) of
         P ->
             receive
+                {P, {exit_status,N}} = M when N > 127->
+                    %% If exit status is > 127 something went very wrong
+                    ct:fail("Open port failed got ~p",[M]);
                 {P, {exit_status,N}} = M ->
                     %% We test that the exit status is an integer, this means
                     %% that the child program has started. If we get an atom
@@ -1662,13 +1665,7 @@ spawn_executable(Config) when is_list(Config) ->
     [ExactFile2,"hello world","dlrow olleh"] =
     run_echo_args_2(unicode:characters_to_binary("\""++ExactFile2++"\" "++"\"hello world\" \"dlrow olleh\"")),
 
-    ExeExt =
-    case string:to_lower(lists:last(string:tokens(ExactFile2,"."))) of
-        "exe" ->
-            ".exe";
-        _ ->
-            ""
-    end,
+    ExeExt = filename:extension(ExactFile2),
     Executable2 = "spoky name"++ExeExt,
     file:copy(ExactFile1,filename:join([SpaceDir,Executable2])),
     ExactFile3 = filename:nativename(filename:join([SpaceDir,Executable2])),
@@ -1836,7 +1833,7 @@ collect_data(Port) ->
     end.
 
 parse_echo_args_output(Data) ->
-    [lists:last(string:tokens(S,"|")) || S <- string:tokens(Data,"\r\n")].
+    [lists:last(string:lexemes(S,"|")) || S <- string:lexemes(Data,["\r\n",$\n])].
 
 %% Test that the emulator does not mix up ports when the port table wraps
 mix_up_ports(Config) when is_list(Config) ->
@@ -1962,7 +1959,7 @@ max_ports() ->
     erlang:system_info(port_limit).
 
 port_ix(Port) when is_port(Port) ->
-    ["#Port",_,PortIxStr] = string:tokens(erlang:port_to_list(Port),
+    ["#Port",_,PortIxStr] = string:lexemes(erlang:port_to_list(Port),
                                           "<.>"),
     list_to_integer(PortIxStr).
 
diff --git a/erts/emulator/test/process_SUITE.erl b/erts/emulator/test/process_SUITE.erl
index a9f20f9928..a8bcfac84d 100644
--- a/erts/emulator/test/process_SUITE.erl
+++ b/erts/emulator/test/process_SUITE.erl
@@ -2532,8 +2532,13 @@ system_task_on_suspended(Config) when is_list(Config) ->
     end.
 
 gc_request_when_gc_disabled(Config) when is_list(Config) ->
-    Master = self(),
     AIS = erts_debug:set_internal_state(available_internal_state, true),
+    gc_request_when_gc_disabled_do(ref),
+    gc_request_when_gc_disabled_do(immed),
+    erts_debug:set_internal_state(available_internal_state, AIS).
+
+gc_request_when_gc_disabled_do(ReqIdType) ->
+    Master = self(),
     {P, M} = spawn_opt(fun () ->
 			       true = erts_debug:set_internal_state(gc_state,
 								    false),
@@ -2545,7 +2550,10 @@ gc_request_when_gc_disabled(Config) when is_list(Config) ->
 			       receive after 100 -> ok end
 		       end, [monitor, link]),
     receive {P, gc_state, false} -> ok end,
-    ReqId = make_ref(),
+    ReqId = case ReqIdType of
+                ref -> make_ref();
+                immed -> immed
+            end,
     async = garbage_collect(P, [{async, ReqId}]),
     receive
 	{garbage_collect, ReqId, Result} ->
@@ -2554,7 +2562,6 @@ gc_request_when_gc_disabled(Config) when is_list(Config) ->
 	    ok
     end,
     receive {garbage_collect, ReqId, true} -> ok end,
-    erts_debug:set_internal_state(available_internal_state, AIS),
     receive {'DOWN', M, process, P, _Reason} -> ok end,
     ok.
 
diff --git a/erts/emulator/test/receive_SUITE.erl b/erts/emulator/test/receive_SUITE.erl
index a12019ec83..1fe11428b4 100644
--- a/erts/emulator/test/receive_SUITE.erl
+++ b/erts/emulator/test/receive_SUITE.erl
@@ -25,14 +25,16 @@
 -include_lib("common_test/include/ct.hrl").
 
 -export([all/0, suite/0,
-	 call_with_huge_message_queue/1,receive_in_between/1]).
+	 call_with_huge_message_queue/1,receive_in_between/1,
+         receive_opt_exception/1,receive_opt_recursion/1]).
 
 suite() ->
     [{ct_hooks,[ts_install_cth]},
      {timetrap, {minutes, 3}}].
 
-all() -> 
-    [call_with_huge_message_queue, receive_in_between].
+all() ->
+    [call_with_huge_message_queue, receive_in_between,
+     receive_opt_exception, receive_opt_recursion].
 
 call_with_huge_message_queue(Config) when is_list(Config) ->
     Pid = spawn_link(fun echo_loop/0),
@@ -113,6 +115,60 @@ receive_one() ->
 	dummy -> ok
     end.
 
+receive_opt_exception(_Config) ->
+    Recurse = fun() ->
+                      %% Overwrite with the same mark,
+                      %% and never consume it.
+                      ThrowFun = fun() -> throw(aborted) end,
+                      aborted = (catch do_receive_opt_exception(ThrowFun)),
+                      ok
+              end,
+    do_receive_opt_exception(Recurse),
+
+    %% Eat the second message.
+    receive
+        Ref when is_reference(Ref) -> ok
+    end.
+
+do_receive_opt_exception(Disturber) ->
+    %% Create a receive mark.
+    Ref = make_ref(),
+    self() ! Ref,
+    Disturber(),
+    receive
+        Ref ->
+            ok
+    after 0 ->
+            error(the_expected_message_was_not_there)
+    end.
+
+receive_opt_recursion(_Config) ->
+    Recurse = fun() ->
+                      %% Overwrite with the same mark,
+                      %% and never consume it.
+                      NoOp = fun() -> ok end,
+                      BlackHole = spawn(NoOp),
+                      expected = do_receive_opt_recursion(BlackHole, NoOp, true),
+                      ok
+              end,
+    do_receive_opt_recursion(self(), Recurse, false),
+    ok.
+
+do_receive_opt_recursion(Recipient, Disturber, IsInner) ->
+    Ref = make_ref(),
+    Recipient ! Ref,
+    Disturber(),
+    receive
+        Ref -> ok
+    after 0 ->
+            case IsInner of
+                true ->
+                    expected;
+                false ->
+                    error(the_expected_message_was_not_there)
+            end
+    end.
+
 %%%
 %%% Common helpers.
 %%%
diff --git a/erts/emulator/test/scheduler_SUITE.erl b/erts/emulator/test/scheduler_SUITE.erl
index 7afb82a1b8..7eebbe8b19 100644
--- a/erts/emulator/test/scheduler_SUITE.erl
+++ b/erts/emulator/test/scheduler_SUITE.erl
@@ -894,11 +894,9 @@ adjust_schedulers_online() ->
 
 read_affinity(Data) ->
     Exp = "pid " ++ os:getpid() ++ "'s current affinity mask",
-    case string:tokens(Data, ":") of
+    case string:lexemes(Data, ":") of
 	[Exp, DirtyAffinityStr] ->
-	    AffinityStr = string:strip(string:strip(DirtyAffinityStr,
-						    both, $ ),
-				       both, $\n),
+	    AffinityStr = string:trim(DirtyAffinityStr),
 	    case catch erlang:list_to_integer(AffinityStr, 16) of
 		Affinity when is_integer(Affinity) ->
 		    Affinity;
diff --git a/erts/emulator/test/system_info_SUITE.erl b/erts/emulator/test/system_info_SUITE.erl
index 56522039da..fdf4aab24d 100644
--- a/erts/emulator/test/system_info_SUITE.erl
+++ b/erts/emulator/test/system_info_SUITE.erl
@@ -308,9 +308,9 @@ memory_test(_Config) ->
 
     mem_workers_call(MWs,
 		     fun () ->
-			     list_to_atom("an ugly atom "++integer_to_list(erlang:system_info(scheduler_id))),
-			     list_to_atom("another ugly atom "++integer_to_list(erlang:system_info(scheduler_id))),
-			     list_to_atom("yet another ugly atom "++integer_to_list(erlang:system_info(scheduler_id)))
+			     _ = list_to_atom("an ugly atom "++integer_to_list(erlang:system_info(scheduler_id))),
+			     _ = list_to_atom("another ugly atom "++integer_to_list(erlang:system_info(scheduler_id))),
+			     _ = list_to_atom("yet another ugly atom "++integer_to_list(erlang:system_info(scheduler_id)))
 		     end, []),
     cmp_memory(MWs, "new atoms"),
 
diff --git a/erts/emulator/test/trace_SUITE.erl b/erts/emulator/test/trace_SUITE.erl
index 72acd33033..a81aa64057 100644
--- a/erts/emulator/test/trace_SUITE.erl
+++ b/erts/emulator/test/trace_SUITE.erl
@@ -38,7 +38,7 @@
 	 system_monitor_long_gc_1/1, system_monitor_long_gc_2/1, 
 	 system_monitor_large_heap_1/1, system_monitor_large_heap_2/1,
 	 system_monitor_long_schedule/1,
-	 bad_flag/1, trace_delivered/1]).
+	 bad_flag/1, trace_delivered/1, trap_exit_self_receive/1]).
 
 -include_lib("common_test/include/ct.hrl").
 
@@ -61,7 +61,8 @@ all() ->
      more_system_monitor_args, system_monitor_long_gc_1,
      system_monitor_long_gc_2, system_monitor_large_heap_1,
      system_monitor_long_schedule,
-     system_monitor_large_heap_2, bad_flag, trace_delivered].
+     system_monitor_large_heap_2, bad_flag, trace_delivered,
+     trap_exit_self_receive].
 
 init_per_testcase(_Case, Config) ->
     [{receiver,spawn(fun receiver/0)}|Config].
@@ -1709,6 +1710,31 @@ trace_delivered(Config) when is_list(Config) ->
               ok
     end.
 
+%% This testcase checks that receive trace works on exit signal messages
+%% when the sender of the exit signal is the process itself.
+trap_exit_self_receive(Config) ->
+    Parent = self(),
+    Proc = spawn_link(fun() -> process(Parent) end),
+
+    1 = erlang:trace(Proc, true, ['receive']),
+    Proc ! {trap_exit_please, true},
+    {trace, Proc, 'receive', {trap_exit_please, true}} = receive_first_trace(),
+
+    %% Make the process call exit(self(), signal)
+    Reason1 = make_ref(),
+    Proc ! {exit_signal_please, Reason1},
+    {trace, Proc, 'receive', {exit_signal_please, Reason1}} = receive_first_trace(),
+    {trace, Proc, 'receive', {'EXIT', Proc, Reason1}} = receive_first_trace(),
+    receive {Proc, {'EXIT', Proc, Reason1}} -> ok end,
+    receive_nothing(),
+
+    unlink(Proc),
+    Reason2 = make_ref(),
+    Proc ! {exit_please, Reason2},
+    {trace, Proc, 'receive', {exit_please, Reason2}} = receive_first_trace(),
+    receive_nothing(),
+    ok.
+
 drop_trace_until_down(Proc, Mon) ->
     drop_trace_until_down(Proc, Mon, false, 0, 0).
 
@@ -1791,6 +1817,9 @@ process(Dest) ->
             process(Dest);
         {exit_please, Reason} ->
             exit(Reason);
+        {exit_signal_please, Reason} ->
+            exit(self(), Reason),
+            process(Dest);
         {trap_exit_please, State} ->
             process_flag(trap_exit, State),
             process(Dest);
diff --git a/erts/emulator/utils/beam_makeops b/erts/emulator/utils/beam_makeops
index 64a9a49ac8..da994fae3e 100755
--- a/erts/emulator/utils/beam_makeops
+++ b/erts/emulator/utils/beam_makeops
@@ -19,12 +19,24 @@
 # %CopyrightEnd%
 #
 use strict;
-use vars qw($BEAM_FORMAT_NUMBER);
+use vars qw($BEAM_FORMAT_NUMBER $GC_REGEXP);
 use constant COLD => 0;
 use constant WARM => 1;
 use constant HOT => 2;
 
+# Instructions for packing
+use constant PACK_JUMP => 1;
+use constant PACK_IN_INSTR_WORD => 2;
+use constant PACK_OPT_IN_INSTR_WORD => 4;
+
+# Packing commands
+use constant PACK_CMD_TIGHTEST => '1';
+use constant PACK_CMD_TIGHT => '2';
+use constant PACK_CMD_LOOSE => '3';
+use constant PACK_CMD_WIDE => '4';
+
 $BEAM_FORMAT_NUMBER = undef;
+$GC_REGEXP = undef;
 
 my $target = \&emulator_output;
 my $outdir = ".";		# Directory for output files.
@@ -32,30 +44,15 @@ my $verbose = 0;
 my $hotness = 1;
 my $num_file_opcodes = 0;
 my $wordsize = 32;
-my %defs;			# Defines (from command line).
+my $code_pointers_are_short = 0; # Whether code pointers (to C code) are short.
+my $code_model = 'unknown';
+my %defs;                        # Defines (from command line).
 
 # This is shift counts and mask for the packer.
 my $WHOLE_WORD = '';
-my @pack_instr;
-my @pack_shift;
-my @pack_mask;
-
-$pack_instr[2] = ['6', 'i'];
-$pack_instr[3] = ['0', '0', 'i'];
-$pack_instr[4] = ['6', '6', '6', 'i']; # Only for 64 bit wordsize
-
-$pack_shift[2] = ['0', 'BEAM_LOOSE_SHIFT'];
-$pack_shift[3] = ['0', 'BEAM_TIGHT_SHIFT', '(2*BEAM_TIGHT_SHIFT)'];
-$pack_shift[4] = ['0', 'BEAM_LOOSE_SHIFT', # Only for 64 bit wordsize
-		  '(2*BEAM_LOOSE_SHIFT)',
-		  '(3*BEAM_LOOSE_SHIFT)'];
-
-$pack_mask[2]  = ['BEAM_LOOSE_MASK', $WHOLE_WORD];
-$pack_mask[3]  = ['BEAM_TIGHT_MASK', 'BEAM_TIGHT_MASK', 'BEAM_TIGHT_MASK'];
-$pack_mask[4]  = ['BEAM_LOOSE_MASK', # Only for 64 bit wordsize
-		  'BEAM_LOOSE_MASK',
-		  'BEAM_LOOSE_MASK',
-		  $WHOLE_WORD];
+
+my @basic_pack_options = (0);
+my @extended_pack_options = @basic_pack_options;
 
 # There are two types of instructions: generic and specific.
 # The generic instructions are those generated by the Beam compiler.
@@ -81,6 +78,10 @@ my %num_specific;
 my %gen_to_spec;
 my %specific_op;
 
+# The following hashes are used for error checking.
+my %print_name;
+my %specific_op_arity;
+
 # Information about each specific operator. Key is the print name (e.g. get_list_xxy).
 # Value is a hash.
 my %spec_op_info;
@@ -135,7 +136,10 @@ my $loader_types = "nprvlqo";
 my $genop_types = $compiler_types . $loader_types;
 
 #
-# Defines the argument types and their loaded size assuming no packing.
+# Define the operand types and their loaded size assuming no packing.
+#
+# Those are the types that can be used in the definition of a specific
+# instruction.
 #
 my %arg_size = ('r' => 0,	# x(0) - x register zero
 		'x' => 1,	# x(N), N > 0 - x register
@@ -158,12 +162,35 @@ my %arg_size = ('r' => 0,	# x(0) - x register zero
 		'A' => 1,	# arity value
 		'P' => 1,	# byte offset into tuple or stack
 		'Q' => 1,	# like 'P', but packable
-		'h' => 1,	# character
+		'h' => 1,	# character (not used)
 		'l' => 1,	# float reg
 		'q' => 1,	# literal term
 	     );
 
 #
+# Define the types that may be used in a transformation rule.
+#
+# %pattern_type defines the types that may be used in a pattern
+# on the left side.
+#
+# %construction_type defines the types that may be used when
+# constructing a new instruction on the right side (a subset of
+# the pattern types that are possible to construct).
+#
+my $pattern_types = "acdfjilnopqsuxy";
+my %pattern_type;
+@pattern_type{split("", $pattern_types)} = (1) x length($pattern_types);
+
+my %construction_type;
+foreach my $type (keys %pattern_type) {
+    $construction_type{$type} = 1
+        if index($genop_types, $type) >= 0;
+}
+foreach my $makes_no_sense ('f', 'j', 'o', 'p', 'q') {
+    delete $construction_type{$makes_no_sense};
+}
+
+#
 # Generate bits.
 #
 my %type_bit;
@@ -198,7 +225,8 @@ sub define_type_bit {
     define_type_bit('S', $type_bit{'d'});
     define_type_bit('j', $type_bit{'f'} | $type_bit{'p'});
 
-    # Aliases (for matching purposes).
+    # Aliases of 'u'.  Those specify how to load the operand and
+    # what kind of packing can be done.
     define_type_bit('t', $type_bit{'u'});
     define_type_bit('I', $type_bit{'u'});
     define_type_bit('W', $type_bit{'u'});
@@ -250,6 +278,7 @@ while (@ARGV && $ARGV[0] =~ /^-(.*)/) {
     ($target = \&compiler_output), next if /^compiler/;
     ($outdir = shift), next if /^outdir/;
     ($wordsize = shift), next if /^wordsize/;
+    ($code_model = shift), next if /^code-model/;
     ($verbose = 1), next if /^v/;
     ($defs{$1} = $2), next if /^D(\w+)=(\w+)/;
     die "$0: Bad option: -$_\n";
@@ -261,23 +290,36 @@ if ($wordsize == 32) {
 } elsif ($wordsize == 64) {
     $defs{'ARCH_32'} = 0;
     $defs{'ARCH_64'} = 1;
+    $code_pointers_are_short = $code_model eq 'small';
 }
 
 #
-# Initialize number of arguments per packed word.
+# Initialize pack options.
 #
 
 if ($wordsize == 64) {
-    $pack_mask[3] = ['BEAM_TIGHT_MASK', 'BEAM_TIGHT_MASK', $WHOLE_WORD];
+    @basic_pack_options = (0,PACK_JUMP);
+    @extended_pack_options = @basic_pack_options;
+    if ($code_pointers_are_short) {
+        foreach (@basic_pack_options) {
+            push @extended_pack_options, $_ | PACK_IN_INSTR_WORD;
+        }
+    }
 }
 
 #
 # Add placeholders for built-in macros.
 #
 
-$c_code{'IS_PACKED'} = ['$Expr',"built-in macro",('Expr')];
-$c_code{'ARG_POSITION'} = ['$Expr',"built-in macro",('Expr')];
-foreach my $name (keys %c_code) {
+my %predef_macros =
+    (OPERAND_POSITION => ['Expr'],
+     IF => ['Expr','IfTrue','IfFalse'],
+     REFRESH_GEN_DEST => [],
+    );
+foreach my $name (keys %predef_macros) {
+    my @args = @{$predef_macros{$name}};
+    my $body = join(':', map { '$' . $_ } @args);
+    $c_code{$name} = [$body,"built-in macro",@args],
     $c_code_used{$name} = 1;
 }
 
@@ -355,8 +397,10 @@ while (<>) {
     #
     if (/^([\w_][\w\d_]+)=(.*)/) {
 	no strict 'refs';
-	my($name) = $1;
-	$$name = $2;
+	my $name = $1;
+        my $value = $2;
+        $value =~ s/;\s*$//;
+	$$name = $value;
 	next;
     }
 
@@ -450,15 +494,7 @@ while (<>) {
     # Parse specific instructions (only present in emulator/loader):
     #    Name Arg1 Arg2...
     #
-    my($name, @args) = split;
-    error("too many operands")
-	if @args > $max_spec_operands;
-    syntax_check($name, @args);
-    my $arity = @args;
-    if (defined $gen_opnum{$name,$arity} and $obsolete[$gen_opnum{$name,$arity}]) {
-	error("specific instructions may not be specified for obsolete instructions");
-    }
-    save_specific_ops($name, $arity, $hotness, @args);
+    my($name,$arity) = parse_specific_op($_);
     if (defined $op_num) {
 	error("specific instructions must not be numbered");
     } elsif (!defined($gen_arity{$name}) && !defined($unnumbered{$name,$arity})) {
@@ -531,10 +567,9 @@ sub emulator_output {
     foreach $key (keys %specific_op) {
 	foreach (@{$specific_op{$key}}) {
 	    my($name, $hotness, @args) = @$_;
-	    my $sign = join('', @args);
 	    my $print_name = print_name($name, @args);
 
-	    my($size, $code, $pack_spec) = cg_basic($name, @args);
+	    my($size, $code, $pack_spec) = cg_basic(name => $name, args => \@args);
 	    if (defined $code) {
                 $code = "OpCase($print_name):\n$code";
                 push @generated_code, [$hotness,$code,($print_name)];
@@ -602,6 +637,7 @@ sub emulator_output {
 	foreach (@{$specific_op{$key}}) {
 	    my($name, $hot, @args) = @{$_};
 	    my($sign) = join('', @args);
+            $sign =~ s/[?]//g;
 
 	    # The primitive types should sort before other types.
 
@@ -619,6 +655,7 @@ sub emulator_output {
             my $print_name = $items{$sort_key};
             my $info = $spec_op_info{$print_name};
             my(@args) = @{$info->{'args'}};
+            @args = map { s/[?]$//; $_ } @args;
 	    my $arity = @args;
 
 	    #
@@ -732,12 +769,19 @@ sub emulator_output {
 	print "#if !defined(ARCH_64)\n";
 	print qq[  #error "64-bit architecture assumed, but ARCH_64 not defined"\n];
 	print "#endif\n";
+        if ($code_pointers_are_short) {
+            print "#if !defined(CODE_MODEL_SMALL)\n";
+            print qq[  #error "small code model assumed, but CODE_MODEL_SMALL not defined"\n];
+            print "#endif\n";
+        }
 	print "#define BEAM_WIDE_MASK 0xFFFFFFFFull\n";
 	print "#define BEAM_LOOSE_MASK 0xFFFFull\n";
 	print "#define BEAM_TIGHT_MASK 0xFFFFull\n";
+	print "#define BEAM_TIGHTEST_MASK 0x3FFull\n";
 	print "#define BEAM_WIDE_SHIFT 32\n";
 	print "#define BEAM_LOOSE_SHIFT 16\n";
 	print "#define BEAM_TIGHT_SHIFT 16\n";
+	print "#define BEAM_TIGHTEST_SHIFT 10\n";
     }
     print "\n";
 
@@ -852,6 +896,7 @@ sub emulator_output {
 sub print_name {
     my($name,@args) = @_;
     my $sign = join '', @args;
+    $sign =~ s/[?]//g;
     $sign ne '' ? "${name}_$sign" : $name;
 }
 
@@ -971,40 +1016,70 @@ sub compiler_output {
 }
 
 #
-# Check an operation for validity.
+# Parse and store a specific operation.
 #
-sub syntax_check {
-    my($name, @args) = @_;
-    my($i);
+sub parse_specific_op {
+    my($name, @args) = split " ", shift;
+    my $arity = @args;
 
+    # Check for various errors.
     error("Bad opcode name '$name'")
 	unless $name =~ /^[a-z][\w\d_]*$/;
-    for ($i = 0; $i < @args; $i++) {
-        foreach my $type (split(//, $args[$i])) {
+    error("too many operands")
+	if @args > $max_spec_operands;
+    for (my $i = 0; $i < $arity; $i++) {
+        my $arg = $args[$i];
+        $arg =~ s/[?]$//;
+        foreach my $type (split(//, $arg)) {
             error("Argument " . ($i+1) . ": invalid type '$type'")
                 unless defined $arg_size{$type};
         }
     }
-}
-
-sub save_specific_ops {
-    my($name,$arity,$hot,@args) = @_;
-    my(@res) = ("");
+    if (defined $gen_opnum{$name,$arity} and $obsolete[$gen_opnum{$name,$arity}]) {
+	error("specific instructions may not be specified for obsolete instructions");
+    }
 
+    # Expand operands with multiple types to multiple instructions.
+    # (For example, "get_list xy xy xy" will be expanded to six instructions.)
+    my @res = ([]);
     foreach my $arg (@args) {
-        my @new_res = ();
+        my @old_res = @res;
+        @res = ();
+        my $marker = ($arg =~ s/[?]$//) ? '?' : '';
         foreach my $type (split(//, $arg)) {
-            foreach my $args (@res) {
-                push @new_res, "$args$type";
+            foreach my $args_ref (@old_res) {
+                my @args = @$args_ref;
+                push @args, "$type$marker";
+                push @res, \@args;
             }
         }
-        @res = @new_res;
     }
+
+    # Store each specific instruction.
     my $key = "$name/$arity";
-    foreach my $args (@res) {
-        @args = split //, $args;
-        push @{$specific_op{$key}}, [$name,$hot,@args];
+    foreach my $args_ref (@res) {
+        @args = @$args_ref;
+        my $arity = @args;
+        my $loc = "$ARGV($.)";
+        if (defined $specific_op_arity{$name}) {
+            my($prev_arity,$loc) = @{$specific_op_arity{$name}};
+            if ($arity != $prev_arity) {
+                error("$name defined with arity $arity, " .
+                      "but previously defined with arity $prev_arity at $loc");
+            }
+        }
+        $specific_op_arity{$name} = [$arity,$loc];
+        my $print_name = print_name($name, @args);
+        if (defined $print_name{$print_name}) {
+            error("$name @args: already defined at " .
+                  $print_name{$print_name});
+        }
+        $print_name{$print_name} = $loc;
+        push @{$specific_op{$key}}, [$name,$hotness,@args];
     }
+
+    # Done.
+    ($name,$arity);
 }
 
 sub parse_c_args {
@@ -1110,9 +1185,28 @@ sub combine_instruction_group {
     # Variables.
     my %offsets;
     my @instrs;
-    my %num_references;
+    my %num_references;         # Number of references from other sub instructions.
     my $group_size = 999;
 
+    #
+    # Calculate the number of references from other sub instructions.
+    # This number is useful in several ways:
+    #
+    # * If this number is 0, it is only used as the entry point for a
+    #   function, implying that it does not need a label and that operands
+    #   can be packed into the instruction word.
+    #
+    # * We'll use this number in the sort key, as a tie breaker for sub instructions
+    #   at the same instruction offset.
+    #
+    foreach my $ref_instr (@in_instrs) {
+        my(undef,undef,$first_sub,@other_subs) = @$ref_instr;
+        $num_references{$first_sub} += 0; # Make sure it is defined.
+        foreach my $sub (@other_subs) {
+            $num_references{$sub}++;
+        }
+    }
+
     # Do basic error checking. Associate operands of instructions
     # with the correct micro instructions. Calculate offsets for micro
     # instructions.
@@ -1138,12 +1232,13 @@ sub combine_instruction_group {
                 foreach (0..$#c_args) {
                     push @first, shift @rest;
                 }
-                my $size = cg_combined_size($s, 1, @first);
+                my $size = cg_combined_size(name => $s,
+                                            first => $num_references{$s} == 0,
+                                            args => \@first);
                 $offsets{$s} = $offset
                     unless defined $offsets{$s} and $offsets{$s} < $offset;
                 $offset += $size - 1;
                 my $label = micro_label($s);
-                $num_references{$label} = 0;
                 push @new_subs, [$opcase,$label,$s,$size-1,@first];
                 $opcase = '';
             }
@@ -1162,9 +1257,8 @@ sub combine_instruction_group {
             my($opcase,$label,$s,$size,@args) = @{$subs[$i]};
             my $next = '';
             (undef,$next) = @{$subs[$i+1]} if $i < $#subs;
-            $num_references{$next}++ if $next;
             my $instr_info = "$opcase:$label:$next:$s:$size:@args";
-            push @all_instrs, [$label,$offsets{$s},$instr_info];
+            push @all_instrs, [$label,$s,$offsets{$s},$instr_info];
         }
     }
 
@@ -1172,8 +1266,8 @@ sub combine_instruction_group {
     my %label_to_offset;
     my %order_to_offset;
     foreach my $instr (@all_instrs) {
-        my($label,$offset,$instr_info) = @$instr;
-        my $sort_key = sprintf("%02d.%02d", $offset, $num_references{$label});
+        my($label,$s,$offset,$instr_info) = @$instr;
+        my $sort_key = sprintf("%02d.%02d", $offset, $num_references{$s});
         push @{$order_to_instrs{$sort_key}}, $instr_info;
         $label_to_offset{$label} = $offset;
         $order_to_offset{$sort_key} = $offset;
@@ -1212,7 +1306,7 @@ sub combine_instruction_group {
                 $gcode .= "OpCase($opcase):\n";
                 push @opcase_labels, $opcase;
             }
-            if ($num_references{$label}) {
+            if ($num_references{$s}) {
                 $gcode .= "$label:\n";
             }
 
@@ -1229,8 +1323,13 @@ sub combine_instruction_group {
             }
 
             my($gen_code,$down,$up) =
-                cg_combined_code($s, 1, $flags, $offset,
-                                 $group_size-$offset, $inc, @first);
+                cg_combined_code(name => $s,
+                                 first => $num_references{$s} == 0,
+                                 extra_comments => $flags,
+                                 offset => $offset,
+                                 comp_size => $group_size-$offset,
+                                 inc => $inc,
+                                 args =>\@first);
             my $spec_label = "$opcase$label";
             $down{$spec_label} = $down;
             $up{$spec_label} = $up;
@@ -1279,8 +1378,8 @@ sub micro_label {
 #
 
 sub cg_basic {
-    my($name,@args) = @_;
-    my($size,$code,$pack_spec) = code_gen($name, 1, '', 0, undef, undef, @args);
+    my %params = (@_, pack_options => \@extended_pack_options);
+    my($size,$code,$pack_spec) = code_gen(%params);
     $pack_spec = build_pack_spec($pack_spec);
     ($size,$code,$pack_spec);
 }
@@ -1290,8 +1389,12 @@ sub cg_basic {
 #
 
 sub cg_combined_size {
-    my($name,$pack,@args) = @_;
-    my($size) = code_gen($name, $pack, '', 0, undef, undef, @args);
+    my %params = (@_,
+                  pack_options => \@basic_pack_options,
+                  size_only => 1);
+    $params{pack_options} = \@extended_pack_options
+        if $params{first};
+    my($size) = code_gen(%params);
     $size;
 }
 
@@ -1300,8 +1403,10 @@ sub cg_combined_size {
 #
 
 sub cg_combined_code {
-    my($name,$pack,$extra_comments,$offset,$comp_size,$inc,@args) = @_;
-    my($size,$code,$pack_spec) = code_gen(@_);
+    my %params = (@_, pack_options => \@basic_pack_options);
+    $params{pack_options} = \@extended_pack_options
+        if $params{first};
+    my($size,$code,$pack_spec) = code_gen(%params);
     if ($pack_spec eq '') {
         ($code,'','');
     } else {
@@ -1311,8 +1416,17 @@ sub cg_combined_code {
 }
 
 sub code_gen {
-    my($name,$pack,$extra_comments,$offset,$comp_size,$inc,@args) = @_;
-    my $group_size = defined $comp_size ? $comp_size + $inc : undef;
+    my %params = (extra_comments => '',
+                  offset => 0,
+                  inc => 0,
+                  size_only => 0,
+                  @_);
+    my $name = $params{name};
+    my $extra_comments = $params{extra_comments};
+    my $offset = $params{offset};
+    my $inc = $params{inc};
+    my @args = @{$params{args}};
+
     my $size = 0;
     my $flags = '';
     my @f;
@@ -1326,8 +1440,9 @@ sub code_gen {
     #
 
     my $c_code_ref = $c_code{$name};
-    if ($pack and defined $c_code_ref and $name ne 'catch') {
-        ($var_decls, $pack_spec, @args) = do_pack($offset, @args);
+    if (defined $c_code_ref and $name ne 'catch') {
+        my $pack_options = $params{pack_options};
+        ($var_decls, $pack_spec, @args) = do_pack($name, $offset, $pack_options, @args);
     }
 
     #
@@ -1337,6 +1452,8 @@ sub code_gen {
 
     my $need_block = 0;
     my $arg_offset = $offset;
+    my $has_gen_dest = 0;
+    @args = map { s/[?]$//g; $_ } @args;
     foreach (@args) {
 	my($this_size) = $arg_size{$_};
       SWITCH:
@@ -1346,6 +1463,7 @@ sub code_gen {
                     "Eterm* dst_ptr = REG_TARGET_PTR(dst);\n";
                 push(@f, "*dst_ptr");
                 $this_size = $1;
+                $has_gen_dest = 1;
                 last SWITCH;
             };
 	    /^packed:[a-zA-z]:(\d):(.*)/ and do {
@@ -1378,6 +1496,7 @@ sub code_gen {
                 $var_decls .= "Eterm dst = " . arg_offset($arg_offset) . ";\n" .
                     "Eterm* dst_ptr = REG_TARGET_PTR(dst);\n";
                 push(@f, "*dst_ptr");
+                $has_gen_dest = 1;
                 last SWITCH;
             };
             defined $arg_size{$_} and do {
@@ -1392,14 +1511,14 @@ sub code_gen {
     }
 
     #
-    # If the implementation is in beam_emu.c, there is nothing
-    # more to do.
+    # If the implementation is in beam_emu.c or if
+    # the caller only wants the size, we are done.
     #
-    unless (defined $c_code_ref) {
+    if (not defined $c_code_ref or $params{size_only}) {
         return ($size+1, undef, '');
     }
 
-    $group_size = $size unless defined $group_size;
+    my $group_size = ($params{comp_size} || $size) + $inc;
 
     #
     # Generate main body of the implementation.
@@ -1418,7 +1537,7 @@ sub code_gen {
         $bindings{$var} = $f[$i];
     }
     $bindings{'NEXT_INSTRUCTION'} = "I+" . ($group_size+$offset+1);
-    $bindings{'IP_ADJUSTMENT'} = defined $inc ? $inc : 0;
+    $bindings{'IP_ADJUSTMENT'} = $inc;
     $c_code = eval { expand_all($c_code, \%bindings) };
     unless (defined $c_code) {
         warn $@;
@@ -1441,10 +1560,10 @@ sub code_gen {
             "ASSERT(VALID_INSTR(*I));\n" .
             "Goto(*I);";
     } else {
-        $var_decls .= "BeamInstr next_pf = I[$instr_offset];\n";
+        $var_decls .= "BeamInstr next_pf = BeamCodeAddr(I[$instr_offset]);\n";
         $dispatch_next = "\nI += $instr_offset;\n" .
             "ASSERT(VALID_INSTR(next_pf));\n" .
-            "Goto(next_pf);";
+            "GotoPF(next_pf);";
     }
 
     #
@@ -1460,9 +1579,36 @@ sub code_gen {
                     "{",
                     "$var_decls$body",
                     "}", "");
+
+    # Make sure that $REFRESH_GEN_DEST() is used when a
+    # general destination ('d') may have been clobbered by
+    # a GC.
+    my $gc_error = verify_gc_code($code, $has_gen_dest);
+    if (defined $gc_error) {
+        warn $gc_error;
+        error("... from the body of $name at $where");
+    }
+
+    # Done.
     ($size+1, $code, $pack_spec);
 }
 
+sub verify_gc_code {
+    my $code = shift;
+    my $has_gen_dest = shift;
+
+    return unless $has_gen_dest;
+
+    if ($code =~ /$GC_REGEXP/o) {
+        my $code_after_gc = substr($code, $+[0]);
+        unless ($code_after_gc =~ /dst_ptr = REG_TARGET_PTR/) {
+            return "pointer to destination register is invalid after GC -- " .
+                "use \$REFRESH_GEN_DEST()\n";
+        }
+    }
+    return undef;
+}
+
 sub arg_offset {
     my $offset = shift;
     "I[" . ($offset+1) . "]";
@@ -1562,17 +1708,26 @@ sub expand_macro {
     }
 
     # Handle built-in macros.
-    if ($name eq 'ARG_POSITION') {
+    if ($name eq 'OPERAND_POSITION') {
         if ($body =~ /^I\[(\d+)\]$/) {
             $body = $1;
         } else {
             $body = 0;
         }
-    } elsif ($name eq 'IS_PACKED') {
-        $body = ($body =~ /^I\[\d+\]$/) ? 0 : 1;
+    } elsif ($name eq 'IF') {
+        my $expr = $new_bindings{Expr};
+        my $bool = eval $expr;
+        if ($@ ne '') {
+            &error("bad expression '$expr' in \$IF()");
+        }
+        my $part = $bool ? 'IfTrue' : 'IfFalse';
+        $body = $new_bindings{$part};
+    } elsif ($name eq 'REFRESH_GEN_DEST') {
+        $body = "dst_ptr = REG_TARGET_PTR(dst)";
     }
 
-    # Wrap body if needed and return resul.t
+
+    # Wrap body if needed and return result.
     $body = "do {\n$body\n} while (0)"
         if needs_do_wrapper($body);
     ($body,$rest);
@@ -1603,9 +1758,51 @@ sub needs_do_wrapper {
 }
 
 sub do_pack {
-    my($offset,@args) = @_;
+    my($name,$offset,$pack_opts_ref,@args) = @_;
+    my @pack_opts = @$pack_opts_ref;
+    my $opt_arg_pos = -1;
+
+    # Look for an optional use operand not as the first argument.
+    if (@args and $args[0] !~ /[?]$/) {
+        for (my $pos = 0; $pos < @args; $pos++) {
+            if ($args[$pos] =~ /[?]$/) {
+                $opt_arg_pos = $pos;
+                last;
+            }
+        }
+    }
+
+    @args = map { s/[?]$//; $_ } @args; # Remove any optional use marker.
+
+    # If there is an optional operand, extend the array of pack options.
+    if ($opt_arg_pos >= 0) {
+        my @new_pack_opts = grep { $_ & PACK_IN_INSTR_WORD } @pack_opts;
+        @new_pack_opts = map {
+            ($_ & ~ PACK_IN_INSTR_WORD) | PACK_OPT_IN_INSTR_WORD;
+        } @new_pack_opts;
+        push @pack_opts, @new_pack_opts;
+    }
+
+    my $ret = ['', ':', @args];
+    my $score = 0;
+
+    foreach my $options (@pack_opts) {
+        my $this_opt_arg_pos = ($options & PACK_OPT_IN_INSTR_WORD) ? $opt_arg_pos : -1;
+        my($this_score,$this_result) =
+            do_pack_one($name, $options, $this_opt_arg_pos, $offset, @args);
+        if ($this_score > $score) {
+            $ret = $this_result;
+            $score = $this_score;
+        }
+    }
+    return @$ret;
+}
+
+sub do_pack_one {
+    my($name,$options,$opt_arg_pos,$offset,@args) = @_;
     my($packable_args) = 0;
     my @bits_needed;            # Bits needed for each argument.
+    my $pack_in_iw = $options & PACK_IN_INSTR_WORD;
 
     #
     # Define the minimum number of bits needed for the packable argument types.
@@ -1619,6 +1816,10 @@ sub do_pack {
                        't' => 16);
     if ($wordsize == 64) {
         $bits_needed{'I'} = 32;
+        if ($options & PACK_JUMP) {
+            $bits_needed{'f'} = 32;
+            $bits_needed{'j'} = 32;
+        }
     }
 
     #
@@ -1631,51 +1832,48 @@ sub do_pack {
 	} else {
 	    push @bits_needed, 0;
 	}
-    }
-
-    #
-    # Try to pack 'f' and 'j', but not at expense at worse packing
-    # for other operands. For example, given the arguments "f x x", we
-    # want the 'x' operands to be packed, not 'f' and 'x' packed and
-    # the final 'x' not packed.
-    #
-
-    if ($wordsize == 64 and $packable_args == 1) {
-        for (my $i = 0; $i < @args; $i++) {
-            if ($args[$i] =~ /^[fj]$/) {
-                $bits_needed[$i] = 32;
-                $packable_args++;
-                last;
-            }
+        if ($arg =~ /^[fj]$/) {
+            # Only pack the first occurrence of 'f' or 'j'.
+            delete $bits_needed{'f'};
+            delete $bits_needed{'j'};
         }
     }
 
     #
-    # Nothing to pack unless there are at least 2 packable arguments.
+    # Return if there is nothing to pack.
     #
-    return ('', ':', @args) if $packable_args < 2;
+    if ($packable_args == 0) {
+        return (-1);
+    } elsif ($packable_args == 1 and $options == 0) {
+        return (-1);
+    }
 
     #
     # Determine how many arguments we should pack into each word.
     #
     my @args_per_word;
     my @need_wide_mask;
-    my $bits = 0;
-    my $word = 0;
-    $args_per_word[0] = 0;
-    $need_wide_mask[0] = 0;
-    for (my $i = 0; $i < @args; $i++) {
-        if ($bits_needed[$i]) {
-            my $needed = $bits_needed[$i];
-
-            my $next_word = sub {
-                $word++;
-                $args_per_word[$word] = 0;
-                $need_wide_mask[$word] = 0;
-                $bits = 0;
-            };
+    my $bits;
+    my $this_wordsize;
+    my $word = -1;
+
+    my $next_word = sub {
+        $word++;
+        $args_per_word[$word] = 0;
+        $need_wide_mask[$word] = 0;
+        $bits = 0;
+        $this_wordsize = $wordsize;
+    };
+
+    $next_word->();
+    $this_wordsize = 32 if $pack_in_iw;
+    for (my $arg_num = 0; $arg_num < @args; $arg_num++) {
+            my $needed = $bits_needed[$arg_num];
 
-            if ($bits+$needed > $wordsize) { # Does not fit.
+            next unless $needed;
+            next if $arg_num == $opt_arg_pos;
+
+            if ($bits+$needed > $this_wordsize) { # Does not fit.
                 $next_word->();
             }
             if ($args_per_word[$word] == 4) { # Can't handle more than 4 args.
@@ -1695,15 +1893,16 @@ sub do_pack {
                 # Can only pack two things in a word where one
                 # item is 32 bits. Force the next item into
                 # the next word.
-                $bits = $wordsize;
+                $bits = $this_wordsize;
             }
-        }
     }
 
     #
     # Try to balance packing between words.
     #
-    if ($args_per_word[$#args_per_word] == 1) {
+    if (@args_per_word == 1 and $args_per_word[0] == 1 and $pack_in_iw) {
+        # Don't rebalance.
+    } elsif ($args_per_word[$#args_per_word] == 1) {
         if ($args_per_word[$#args_per_word-1] < 3) {
             pop @args_per_word;
         } else {
@@ -1728,12 +1927,19 @@ sub do_pack {
 				# beginning).
     my $up = '';		# Pack commands (storing back while
 				# moving forward).
+    my $arg_num = 0;            # Number of argument.
 
-    # Skip an unpackable argument.
+    # Skip an unpackable argument. Also handle packing of
+    # an single operand into the instruction word.
     my $skip_unpackable = sub {
         my($arg) = @_;
 
-        if ($arg_size{$arg}) {
+        if ($arg_num == $opt_arg_pos) {
+            my $pack = chr(ord('#') + $arg_num);
+            $down = PACK_CMD_WIDE . "$pack$down";
+            my $unpack = "BeamExtraData(I[0])";
+            $args[$arg_num] = "packed:$arg:0:${arg}b($unpack)";
+        } elsif ($arg_size{$arg}) {
             # Save the argument on the pack engine's stack.
             my $push = 'g';
             if ($type_bit{$arg} & $type_bit{'q'}) {
@@ -1753,43 +1959,50 @@ sub do_pack {
     # the packing engine works from right-to-left, but we must generate
     # the instructions from left-to-right because we must calculate
     # instruction sizes from left-to-right.
-
-    my $arg_num = 0;
     for (my $word = 0; $word < @args_per_word; $word++) {
         my $ap = 0;              # Argument number within word.
         my $packed_var = "tmp_packed" . ($word+1);
         my $args_per_word = $args_per_word[$word];
-        my @shift;
-        my @mask;
-        my @instr;
-
-        if ($need_wide_mask[$word]) {
-            @shift = ('0', 'BEAM_WIDE_SHIFT');
-            @mask = ('BEAM_WIDE_MASK', $WHOLE_WORD);
-            @instr = ('w', 'w');
-        } else {
-            @shift = @{$pack_shift[$args_per_word]};
-            @mask = @{$pack_mask[$args_per_word]};
-            @instr = @{$pack_instr[$args_per_word]};
-        }
+        my $pack_word_size = ($pack_in_iw && $word == 0) ? 32 : $wordsize;
+
+        my($shref,$mref,$iref,$unpack_suffix)  =
+            get_pack_parameters($name, $args_per_word, $pack_word_size,
+                                $need_wide_mask[$word]);
+        my @shift = @$shref;
+        my @mask = @$mref;
+        my @instr = @$iref;
 
         while ($ap < $args_per_word) {
             my $reg = $args[$arg_num];
             my $this_size = $arg_size{$reg};
+
             if ($bits_needed[$arg_num]) {
                 $this_size = 0;
 
                 if ($ap == 0) {
-                    $pack_prefix .= "Eterm $packed_var = " .
-                        arg_offset($size+$offset) . ";\n";
-                    $up .= "p";
-                    $down = "P$down";
-                    $this_size = 1;
+                    my $packed_data;
+                    if ($pack_in_iw and $word == 0) {
+                        $packed_data = "BeamExtraData(I[0])";
+                        if ($args_per_word == 1) {
+                            $packed_var = $packed_data;
+                        } else {
+                            $pack_prefix .= "Eterm $packed_var = $packed_data;\n";
+                        }
+                        my $pack = chr(ord('#') + $size);
+                        $down = "$pack$down";
+                    } else {
+                        $packed_data = arg_offset($size + $offset);
+                        $pack_prefix .= "Eterm $packed_var = $packed_data;\n";
+                        $down = "P$down";
+                        $up .= "p";
+                        $this_size = 1;
+                    }
                 }
 
                 $down = "$instr[$ap]$down";
                 my $unpack = make_unpack($packed_var, $shift[$ap], $mask[$ap]);
-                $args[$arg_num] = "packed:$reg:$this_size:$reg" . "b($unpack)";
+                my $macro = "$reg$unpack_suffix";
+                $args[$arg_num] = "packed:$reg:$this_size:$macro($unpack)";
 
                 $ap++;
             } else {
@@ -1804,12 +2017,107 @@ sub do_pack {
     # Skip any unpackable arguments at the end.
     #
     while ($arg_num < @args) {
-        $skip_unpackable->($args[$arg_num]);
+        my $arg = $args[$arg_num];
+        $skip_unpackable->($arg);
+        $size += $arg_size{$arg};
         $arg_num++;
     }
 
     my $pack_spec = "$down:$up";
-    return ($pack_prefix, $pack_spec, @args);
+    my $score = pack_score($options, @args);
+
+    return ($score, [$pack_prefix,$pack_spec,@args]);
+}
+
+sub get_pack_parameters {
+    my($name,$args_per_word,$pack_word_size,$wide_mask) = @_;
+    my(@shift,@mask,@instr);
+    my $unpack_suffix = 'b';
+
+    if ($wide_mask and $args_per_word > 1) {
+        @shift = ('0', 'BEAM_WIDE_SHIFT');
+        @mask = ('BEAM_WIDE_MASK', $WHOLE_WORD);
+        @instr = (PACK_CMD_WIDE) x 2;
+    } elsif ($args_per_word == 1) {
+        @shift = ('0');
+        @mask = ($WHOLE_WORD);
+        @instr = (PACK_CMD_WIDE);
+    } elsif ($args_per_word == 2) {
+        if ($pack_word_size != $wordsize) {
+            # 64-bit word size, pack 32 bits into instruction word.
+            @shift = ('0', 'BEAM_TIGHT_SHIFT');
+            @mask  = ('BEAM_TIGHT_MASK', $WHOLE_WORD);
+            @instr = (PACK_CMD_TIGHT) x 2;
+        } else {
+            # 32/64 bit word size
+            @shift = ('0', 'BEAM_LOOSE_SHIFT');
+            @mask  = ('BEAM_LOOSE_MASK', $WHOLE_WORD);
+            @instr = (PACK_CMD_LOOSE) x 2;
+        }
+    } elsif ($args_per_word == 3) {
+        if ($pack_word_size != $wordsize) {
+            # 64-bit word size, pack 3 register numbers into instruction word.
+            @shift = ('0', 'BEAM_TIGHTEST_SHIFT', '(2*BEAM_TIGHTEST_SHIFT)');
+            @mask = ('BEAM_TIGHTEST_MASK', 'BEAM_TIGHTEST_MASK', $WHOLE_WORD);
+            @instr = (PACK_CMD_TIGHTEST) x 3;
+            $unpack_suffix = '';
+        } else {
+            # 32/64 bit word size.
+            @shift = ('0', 'BEAM_TIGHT_SHIFT', '(2*BEAM_TIGHT_SHIFT)');
+            if ($wordsize == 32) {
+                @mask = ('BEAM_TIGHT_MASK') x 3;
+            } elsif ($wordsize == 64) {
+                @mask = ('BEAM_TIGHT_MASK', 'BEAM_TIGHT_MASK', $WHOLE_WORD);
+            }
+            @instr = (PACK_CMD_TIGHT) x 3;
+        }
+    } elsif ($args_per_word == 4) {
+        # 64 bit word size only.
+        @shift = ('0',
+                  'BEAM_LOOSE_SHIFT',
+                  '(2*BEAM_LOOSE_SHIFT)',
+		  '(3*BEAM_LOOSE_SHIFT)');
+        @mask = ('BEAM_LOOSE_MASK', 'BEAM_LOOSE_MASK',
+                 'BEAM_LOOSE_MASK', $WHOLE_WORD);
+        @instr = (PACK_CMD_LOOSE) x 4;
+    }
+
+    unless (@shift) {
+        error("$name: internal packing error: args_per_word=$args_per_word, " .
+              "pack_word_size=$pack_word_size");
+    }
+
+    (\@shift,\@mask,\@instr,$unpack_suffix);
+}
+
+sub pack_score {
+    my($options,@args) = @_;
+    my $size = 0;
+
+    # Calculate the number of words.
+    foreach (@args) {
+        if (/^packed:[^:]*:(\d+)/) {
+            $size += $1;
+        } else {
+            $size += $arg_size{$_}
+        }
+    }
+
+    # Less numbers of words give a higher score; for the same number of
+    # words, using PACK_JUMP or PACK_IN_INSTR_WORD gives a lower score.
+    my $score = 1 + 10*($max_spec_operands - $size);
+    if (($options & PACK_OPT_IN_INSTR_WORD) != 0) {
+        $score += 4;
+    } elsif ($options == PACK_IN_INSTR_WORD) {
+        $score += 0;
+    } elsif ($options == PACK_JUMP) {
+        $score += 1;
+    } elsif ($options == (PACK_JUMP|PACK_IN_INSTR_WORD)) {
+        $score += 2;
+    } elsif ($options == 0) {
+        $score += 3;
+    }
+    $score;
 }
 
 sub make_unpack {
@@ -1946,12 +2254,19 @@ sub tr_parse_op {
     if (/^([a-z*]+)(.*)/) {
 	$type = $1;
 	$_ = $2;
+        error("$type: only a single type is allowed on right side of transformations")
+            if not $src and length($type) > 1;
 	foreach (split('', $type)) {
-	    error("bad type in $op")
-		unless defined $type_bit{$_} or $type eq '*';
-	    $_ eq 'r' and
-		error("$op: 'r' is not allowed in transformations")
-	}
+            next if $src and $type eq '*';
+            error("$op: not a type")
+                unless defined $type_bit{$_};
+            error("$op: the type '$_' is not allowed in transformations")
+                unless defined $pattern_type{$_};
+            if (not $src) {
+                error("$op: type '$_' is not allowed on the right side of transformations")
+                    unless defined $construction_type{$_};
+            }
+        }
     }
 
     # Get an optional condition. (In source.)
@@ -1984,10 +2299,18 @@ sub tr_parse_op {
     }
 
     # Get an optional value. (In destination.)
-    $type_val = $type eq 'x' ? 1023 : 0;
+    if ($type eq 'x') {
+        $type_val = 1023;
+    } elsif ($type eq 'a') {
+        $type_val = 'am_Empty';
+    } else {
+        $type_val = 0;
+    }
     if (/^=(.*)/) {
-	error("value not allowed in source: $op")
+	error("$op: value not allowed in source")
 	    if $src;
+        error("$op: the type 'n' must not be given a value")
+            if $type eq 'n';
 	$type_val = $1;
 	$_ = '';
     }
@@ -1997,13 +2320,16 @@ sub tr_parse_op {
     error("garbage '$_' after operand: $op")
 	unless /^\s*$/;
 
-    # Test that destination has no conditions.
+    # Check the conditions.
 
-    unless ($src) {
-	error("condition not allowed in destination: $op")
+    if ($src) {
+        error("$op: the type '$type' is not allowed to be compared with a literal value")
+            if $cond and not $construction_type{$type};
+    } else {
+	error("$op: condition not allowed in destination")
 	    if $cond;
-	error("variable name and type cannot be combined in destination: $op")
-	    if $var && $type;
+	error("$op: variable name and type cannot be combined in destination")
+	    if $var and $type;
     }
 
     ($var,$type,$type_val,$cond,$cond_val);
diff --git a/erts/etc/common/dialyzer.c b/erts/etc/common/dialyzer.c
index 0e74eb065b..b45d5c7ca7 100644
--- a/erts/etc/common/dialyzer.c
+++ b/erts/etc/common/dialyzer.c
@@ -255,7 +255,7 @@ int main(int argc, char** argv)
     }
 
     PUSH("+B");
-    PUSH2("-boot", "start_clean");
+    PUSH2("-boot", "no_dot_erlang");
     PUSH3("-run", "dialyzer", "plain_cl");
     PUSH("-extra");
 
diff --git a/erts/etc/common/erlc.c b/erts/etc/common/erlc.c
index 8cfd98bcc4..aa99c69100 100644
--- a/erts/etc/common/erlc.c
+++ b/erts/etc/common/erlc.c
@@ -234,7 +234,7 @@ int main(int argc, char** argv)
     PUSH("+A0");
     PUSH("-noinput");
     PUSH2("-mode", "minimal");
-    PUSH2("-boot", "start_clean");
+    PUSH2("-boot", "no_dot_erlang");
     PUSH3("-s", "erl_compile", "compile_cmdline");
     PUSH("-extra");
 
diff --git a/erts/etc/common/erlexec.c b/erts/etc/common/erlexec.c
index d61a3cbf95..f7c8c27d53 100644
--- a/erts/etc/common/erlexec.c
+++ b/erts/etc/common/erlexec.c
@@ -31,6 +31,7 @@
 #ifdef __WIN32__
 #  include "erl_version.h"
 #  include "init_file.h"
+#  include <Shlobj.h>
 #endif
 
 #define NO 0
@@ -536,19 +537,44 @@ int main(int argc, char **argv)
     } else {
         add_Eargs(emu);       /* argv[0] = erl or cerl */
     }
-    /*
-     * Add the bindir to the path (unless it is there already).
-     */
+
+    /* Add the bindir to the front of the PATH, and remove all subsequent
+     * occurrences to avoid ballooning it on repeated up/downgrades. */
 
     s = get_env("PATH");
-    if (!s) {
-	erts_snprintf(tmpStr, sizeof(tmpStr), "%s" PATHSEP "%s" DIRSEP "bin", bindir, rootdir);
-    } else if (strstr(s, bindir) == NULL) {
-	erts_snprintf(tmpStr, sizeof(tmpStr), "%s" PATHSEP "%s" DIRSEP "bin" PATHSEP "%s", bindir,
-		rootdir, s);
+
+    if (s == NULL) {
+        erts_snprintf(tmpStr, sizeof(tmpStr),
+            "%s" PATHSEP "%s" DIRSEP "bin" PATHSEP, bindir, rootdir);
+    } else if (strstr(s, rootdir) == NULL) {
+        erts_snprintf(tmpStr, sizeof(tmpStr),
+            "%s" PATHSEP "%s" DIRSEP "bin" PATHSEP "%s", bindir, rootdir, s);
     } else {
-	erts_snprintf(tmpStr, sizeof(tmpStr), "%s", s);
+        const char *bindir_slug, *bindir_slug_index;
+        int bindir_slug_length;
+        const char *in_index;
+        char *out_index;
+
+        erts_snprintf(tmpStr, sizeof(tmpStr), "%s" PATHSEP, bindir);
+
+        bindir_slug = strsave(tmpStr);
+        bindir_slug_length = strlen(bindir_slug);
+
+        out_index = &tmpStr[bindir_slug_length];
+        in_index = s;
+
+        while ((bindir_slug_index = strstr(in_index, bindir_slug))) {
+            int block_length = (bindir_slug_index - in_index);
+
+            memcpy(out_index, in_index, block_length);
+
+            in_index = bindir_slug_index + bindir_slug_length;
+            out_index += block_length;
+        }
+
+        strcpy(out_index, in_index);
     }
+
     free_env_val(s);
     set_env("PATH", tmpStr);
     
@@ -1531,17 +1557,16 @@ static void get_parameters(int argc, char** argv)
 static void
 get_home(void)
 {
-    int len;
-    char tmpstr[MAX_PATH+1];
+    wchar_t *profile;
     char* homedrive;
     char* homepath;
 
     homedrive = get_env("HOMEDRIVE");
     homepath = get_env("HOMEPATH");
     if (!homedrive || !homepath) {
-	if (len = GetWindowsDirectory(tmpstr,MAX_PATH)) {
-	    home = emalloc(len+1);
-	    strcpy(home,tmpstr);
+        if (SHGetKnownFolderPath(&FOLDERID_Profile, 0, NULL, &profile) == S_OK) {
+            home = utf16_to_utf8(profile);
+            /* CoTaskMemFree(profile); */
 	} else
 	    error("HOMEDRIVE or HOMEPATH is not set and GetWindowsDir failed");
     } else {
diff --git a/erts/etc/common/escript.c b/erts/etc/common/escript.c
index 8241675200..d739d21f12 100644
--- a/erts/etc/common/escript.c
+++ b/erts/etc/common/escript.c
@@ -521,7 +521,7 @@ main(int argc, char** argv)
     free_env_val(env);
 
     PUSH("+B");
-    PUSH2("-boot", "start_clean");
+    PUSH2("-boot", "no_dot_erlang");
     PUSH("-noshell");
 
     /*
diff --git a/erts/etc/common/typer.c b/erts/etc/common/typer.c
index b64cbb4a92..f13135d883 100644
--- a/erts/etc/common/typer.c
+++ b/erts/etc/common/typer.c
@@ -177,7 +177,7 @@ main(int argc, char** argv)
     }
 
     PUSH("+B");
-    PUSH2("-boot", "start_clean");
+    PUSH2("-boot", "no_dot_erlang");
     PUSH3("-run", "typer", "start");
     PUSH("-extra");
 
diff --git a/erts/etc/unix/cerl.src b/erts/etc/unix/cerl.src
index 8d5882cf32..9dd8d85abe 100644
--- a/erts/etc/unix/cerl.src
+++ b/erts/etc/unix/cerl.src
@@ -45,6 +45,8 @@
 #   -valgrind   Run emulator compiled for valgrind
 #   -lcnt	Run emulator compiled for lock counting
 #   -icount	Run emulator compiled for instruction counting
+#   -rr         Run emulator under "rr record"
+#               Can be combined with compile targets (like -debug) except valgrind.
 #   -nox        Unset the DISPLAY variable to disable us of X Windows
 #
 # FIXME For GDB you can also set the break point using "-break FUNCTION".
@@ -84,6 +86,8 @@ GDBARGS=
 TYPE=
 debug=
 run_valgrind=no
+run_rr=no
+skip_erlexec=no
 
 # Default rootdir
 ROOTDIR=%SRC_ROOTDIR%
@@ -225,6 +229,13 @@ while [ $# -gt 0 ]; do
 	    cargs="$cargs -valgrind"
 	    TYPE=.valgrind
 	    run_valgrind=yes
+	    skip_erlexec=yes
+	    ;;
+	"-rr")
+	    shift
+	    cargs="$cargs -rr"
+	    run_rr=yes
+	    skip_erlexec=yes
 	    ;;
 	*)
 	    break
@@ -246,7 +257,19 @@ PROGNAME="$PROGNAME$cargs"
 EMU="$EMU$TYPE"
 EMU_NAME=`$EXEC -emu_name_exit $eeargs`
 
-if [ $run_valgrind != yes ]; then
+if [ $skip_erlexec = yes ]; then
+    emu_xargs=`echo $xargs | sed "s|+|-|g"`
+    beam_args=`$EXEC -emu_args_exit ${1+"$@"}`
+
+    # Prepare for some argument passing voodoo:
+    # $beam_args is a list of command line arguments separated by newlines.
+    # Make "$@" represent those arguments verbatim (including spaces and quotes).
+    SAVE_IFS="$IFS"
+    IFS='
+'
+    set -- $beam_args
+    IFS="$SAVE_IFS"
+else
     xargs="$xargs -pz $PRELOADED --"
 fi
 if [ "x$GDB" = "x" ]; then
@@ -254,7 +277,6 @@ if [ "x$GDB" = "x" ]; then
 	valversion=`valgrind --version`
 	valmajor=`echo $valversion | sed 's,[a-z]*\-\([0-9]*\).*,\1,'`
         valminor=`echo $valversion | sed 's,[a-z]*\-[0-9]*.\([0-9]*\).*,\1,'`
-	emu_xargs=`echo $xargs | sed "s|+|-|g"`
 	if [ "x$VALGRIND_LOG_XML" = "x" ]; then
 	    valgrind_xml=
 	    log_file_prefix="--log-file="
@@ -294,17 +316,10 @@ if [ "x$GDB" = "x" ]; then
 	    sched_arg=
 	fi
 
-	beam_args=`$EXEC -emu_args_exit ${1+"$@"}`
-
-	# Time for some argument passing voodoo:
-	# $beam_args is a list of command line arguments separated by newlines.
-	# Make "$@" represent those arguments verbatim (including spaces and quotes).
-	SAVE_IFS="$IFS"
-	IFS='
-'
-	set -- $beam_args
-	IFS="$SAVE_IFS"
 	exec $taskset1 valgrind $valgrind_xml $valgrind_log $valgrind_misc_flags $BINDIR/$EMU_NAME $sched_arg $emu_xargs "$@" -pz $PRELOADED
+
+    elif [ $run_rr = yes ]; then
+	exec rr record --ignore-nested $BINDIR/$EMU_NAME $emu_xargs "$@" -pz $PRELOADED
     else
 	exec $EXEC $eeargs $xargs ${1+"$@"}
     fi
diff --git a/erts/etc/unix/run_erl.c b/erts/etc/unix/run_erl.c
index f928163705..725343d701 100644
--- a/erts/etc/unix/run_erl.c
+++ b/erts/etc/unix/run_erl.c
@@ -1346,11 +1346,8 @@ static int sf_open(const char *path, int type, mode_t mode) {
 }
 
 static int sf_close(int fd) {
-    int res = 0;
-
-    do { res = close(fd); } while(res < 0 && errno == EINTR);
-
-    return res;
+    /* "close() should not be retried after an EINTR" */
+    return close(fd);
 }
 
 /* Extract any control sequences that are ment only for run_erl
diff --git a/erts/include/internal/erl_printf.h b/erts/include/internal/erl_printf.h
index f180a53f18..7e9807f6a8 100644
--- a/erts/include/internal/erl_printf.h
+++ b/erts/include/internal/erl_printf.h
@@ -44,6 +44,7 @@ struct erts_dsprintf_buf_t_ {
 typedef int (*fmtfn_t)(void*, char*, size_t);
 
 int erts_write_fd(void *vfdp, char* buf, size_t len);
+int erts_write_fp(void *vfdp, char* buf, size_t len);
 int erts_write_ds(void *vdsbufp, char* buf, size_t len);
 
 int erts_printf(const char *, ...);
diff --git a/erts/lib_src/common/erl_printf.c b/erts/lib_src/common/erl_printf.c
index 9031a4c5b7..1de0f81e84 100644
--- a/erts/lib_src/common/erl_printf.c
+++ b/erts/lib_src/common/erl_printf.c
@@ -143,8 +143,8 @@ write_f_add_cr(void *vfp, char* buf, size_t len)
     return len;
 }
 
-static int
-write_f(void *vfp, char* buf, size_t len)
+int
+erts_write_fp(void *vfp, char* buf, size_t len)
 {
     ASSERT(vfp);
 #ifdef PUTC_ON_SMALL_WRITES
@@ -253,7 +253,7 @@ erts_printf(const char *format, ...)
 	FLOCKFILE(stdout);
 	res = erts_printf_format(erts_printf_add_cr_to_stdout
 				 ? write_f_add_cr
-				 : write_f,
+				 : erts_write_fp,
 				 (void *) stdout,
 				 (char *) format,
 				 arglist);
@@ -281,7 +281,7 @@ erts_fprintf(FILE *filep, const char *format, ...)
 	else if (erts_printf_add_cr_to_stderr && filep == stderr)
 	    fmt_f = write_f_add_cr;
 	else
-	    fmt_f = write_f;
+	    fmt_f = erts_write_fp;
 	FLOCKFILE(filep);
 	res = erts_printf_format(fmt_f,(void *)filep,(char *)format,arglist);
 	FUNLOCKFILE(filep);
@@ -386,7 +386,7 @@ erts_vprintf(const char *format, va_list arglist)
 	errno = 0;
 	res = erts_printf_format(erts_printf_add_cr_to_stdout
 				 ? write_f_add_cr
-				 : write_f,
+				 : erts_write_fp,
 				 (void *) stdout,
 				 (char *) format,
 				 arglist);
@@ -410,7 +410,7 @@ erts_vfprintf(FILE *filep, const char *format, va_list arglist)
 	else if (erts_printf_add_cr_to_stderr && filep == stderr)
 	    fmt_f = write_f_add_cr;
 	else
-	    fmt_f = write_f;
+	    fmt_f = erts_write_fp;
 	res = erts_printf_format(fmt_f,(void *)filep,(char *)format,arglist);
     }
     return res;
diff --git a/erts/preloaded/ebin/erl_prim_loader.beam b/erts/preloaded/ebin/erl_prim_loader.beam
index af6facb5f2..2d86dd3843 100644
--- a/erts/preloaded/ebin/erl_prim_loader.beam
+++ b/erts/preloaded/ebin/erl_prim_loader.beam
diff --git a/erts/preloaded/ebin/erl_tracer.beam b/erts/preloaded/ebin/erl_tracer.beam
index 7ca25803be..7754d64a6b 100644
--- a/erts/preloaded/ebin/erl_tracer.beam
+++ b/erts/preloaded/ebin/erl_tracer.beam
diff --git a/erts/preloaded/ebin/erlang.beam b/erts/preloaded/ebin/erlang.beam
index 452f3dcc07..7ee47ee023 100644
--- a/erts/preloaded/ebin/erlang.beam
+++ b/erts/preloaded/ebin/erlang.beam
diff --git a/erts/preloaded/ebin/erts_code_purger.beam b/erts/preloaded/ebin/erts_code_purger.beam
index b7c061d9a0..655e1d2e06 100644
--- a/erts/preloaded/ebin/erts_code_purger.beam
+++ b/erts/preloaded/ebin/erts_code_purger.beam
diff --git a/erts/preloaded/ebin/erts_dirty_process_code_checker.beam b/erts/preloaded/ebin/erts_dirty_process_code_checker.beam
index 6467b1c016..2a4cb53d3e 100644
--- a/erts/preloaded/ebin/erts_dirty_process_code_checker.beam
+++ b/erts/preloaded/ebin/erts_dirty_process_code_checker.beam
diff --git a/erts/preloaded/ebin/erts_internal.beam b/erts/preloaded/ebin/erts_internal.beam
index 5416826f19..f8871c63eb 100644
--- a/erts/preloaded/ebin/erts_internal.beam
+++ b/erts/preloaded/ebin/erts_internal.beam
diff --git a/erts/preloaded/ebin/erts_literal_area_collector.beam b/erts/preloaded/ebin/erts_literal_area_collector.beam
index fbd3249d70..bb2676a9e8 100644
--- a/erts/preloaded/ebin/erts_literal_area_collector.beam
+++ b/erts/preloaded/ebin/erts_literal_area_collector.beam
diff --git a/erts/preloaded/ebin/init.beam b/erts/preloaded/ebin/init.beam
index 1c8d0e626a..a2dd41b435 100644
--- a/erts/preloaded/ebin/init.beam
+++ b/erts/preloaded/ebin/init.beam
diff --git a/erts/preloaded/ebin/otp_ring0.beam b/erts/preloaded/ebin/otp_ring0.beam
index 73a017d981..6a03451ad5 100644
--- a/erts/preloaded/ebin/otp_ring0.beam
+++ b/erts/preloaded/ebin/otp_ring0.beam
diff --git a/erts/preloaded/ebin/prim_buffer.beam b/erts/preloaded/ebin/prim_buffer.beam
new file mode 100644
index 0000000000..06d9276247
--- /dev/null
+++ b/erts/preloaded/ebin/prim_buffer.beam
diff --git a/erts/preloaded/ebin/prim_eval.beam b/erts/preloaded/ebin/prim_eval.beam
index 7e46b79671..17c59708e7 100644
--- a/erts/preloaded/ebin/prim_eval.beam
+++ b/erts/preloaded/ebin/prim_eval.beam
diff --git a/erts/preloaded/ebin/prim_file.beam b/erts/preloaded/ebin/prim_file.beam
index 32755d5c28..902b0945c6 100644
--- a/erts/preloaded/ebin/prim_file.beam
+++ b/erts/preloaded/ebin/prim_file.beam
diff --git a/erts/preloaded/ebin/prim_inet.beam b/erts/preloaded/ebin/prim_inet.beam
index c03415c758..a42f45c180 100644
--- a/erts/preloaded/ebin/prim_inet.beam
+++ b/erts/preloaded/ebin/prim_inet.beam
diff --git a/erts/preloaded/ebin/prim_zip.beam b/erts/preloaded/ebin/prim_zip.beam
index 77d0d2edb0..1ec6870178 100644
--- a/erts/preloaded/ebin/prim_zip.beam
+++ b/erts/preloaded/ebin/prim_zip.beam
diff --git a/erts/preloaded/ebin/zlib.beam b/erts/preloaded/ebin/zlib.beam
index 5048bdb846..7a5f4d7527 100644
--- a/erts/preloaded/ebin/zlib.beam
+++ b/erts/preloaded/ebin/zlib.beam
diff --git a/erts/preloaded/src/Makefile b/erts/preloaded/src/Makefile
index edb9f35258..a2872082f2 100644
--- a/erts/preloaded/src/Makefile
+++ b/erts/preloaded/src/Makefile
@@ -36,6 +36,7 @@ include $(ERL_TOP)/lib/kernel/vsn.mk
 PRE_LOADED_ERL_MODULES = \
 	erl_prim_loader \
 	init \
+	prim_buffer \
 	prim_file \
 	prim_inet \
 	zlib \
@@ -116,7 +117,7 @@ prim_eval.beam: prim_eval.S prim_eval.abstr
 
 # Include dependencies -- list below added by PaN
 $(EBIN)/erl_prim_loader.beam: $(KERNEL_SRC)/inet_boot.hrl $(KERNEL_INCLUDE)/file.hrl
-$(EBIN)/prim_file.beam: $(KERNEL_INCLUDE)/file.hrl
+$(EBIN)/prim_file.beam: $(KERNEL_SRC)/file_int.hrl $(KERNEL_INCLUDE)/file.hrl
 $(EBIN)/prim_inet.beam: $(KERNEL_SRC)/inet_int.hrl $(KERNEL_INCLUDE)/inet_sctp.hrl
 $(EBIN)/prim_zip.beam: zip_internal.hrl $(KERNEL_INCLUDE)/file.hrl $(STDLIB_INCLUDE)/zip.hrl
 $(EBIN)/init.erl: $(KERNEL_INCLUDE)/file.hrl
diff --git a/erts/preloaded/src/erl_prim_loader.erl b/erts/preloaded/src/erl_prim_loader.erl
index 1d09aeded9..d16fe5a0bc 100644
--- a/erts/preloaded/src/erl_prim_loader.erl
+++ b/erts/preloaded/src/erl_prim_loader.erl
@@ -151,9 +151,8 @@ start_inet(Parent) ->
     loop(State, Parent, []).
 
 start_efile(Parent) ->
-    {ok, Port} = prim_file:start(),
     %% Check that we started in a valid directory.
-    case prim_file:get_cwd(Port) of
+    case prim_file:get_cwd() of
 	{error, _} ->
 	    %% At this point in the startup, we have no error_logger at all.
 	    Report = "Invalid current directory or invalid filename "
@@ -165,7 +164,7 @@ start_efile(Parent) ->
     end,
     PS = prim_init(),
     State = #state {loader = efile,
-                    data = Port,
+                    data = noport,
                     timeout = ?EFILE_IDLE_TIMEOUT,
                     prim_state = PS},
     loop(State, Parent, []).
@@ -401,12 +400,12 @@ handle_get_cwd(State = #state{loader = inet}, Drive) ->
     ?SAFE2(inet_get_cwd(State, Drive), State).
     
 handle_stop(State = #state{loader = efile}) ->
-    efile_stop_port(State);
+    State;
 handle_stop(State = #state{loader = inet}) ->
     inet_stop_port(State).
 
-handle_exit(State = #state{loader = efile}, Who, Reason) ->
-    efile_exit_port(State, Who, Reason);
+handle_exit(State = #state{loader = efile}, _Who, _Reason) ->
+    State;
 handle_exit(State = #state{loader = inet}, Who, Reason) ->
     inet_exit_port(State, Who, Reason).
 
@@ -475,15 +474,6 @@ efile_get_cwd(#state{prim_state = PS} = State, Drive) ->
     {Res, PS2} = prim_get_cwd(PS, Drive),
     {Res, State#state{prim_state = PS2}}.
 
-efile_stop_port(#state{data=Port}=State) ->
-    prim_file:close(Port),
-    State#state{data=noport}.
-
-efile_exit_port(State, Port, Reason) when State#state.data =:= Port ->
-    exit({port_died,Reason});
-efile_exit_port(State, _Port, _Reason) ->
-    State.
-
 efile_timeout_handler(State, _Parent) ->
     prim_purge_cache(),
     State.
diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl
index c6c105d36a..2be053575b 100644
--- a/erts/preloaded/src/erlang.erl
+++ b/erts/preloaded/src/erlang.erl
@@ -31,8 +31,7 @@
 -export([localtime_to_universaltime/1]).
 -export([suspend_process/1]).
 -export([min/2, max/2]).
--export([dlink/1, dunlink/1, dsend/2, dsend/3, dgroup_leader/2,
-	 dexit/2, dmonitor_node/3, dmonitor_p/2]).
+-export([dmonitor_node/3, dmonitor_p/2]).
 -export([delay_trap/2]).
 -export([set_cookie/2, get_cookie/0]).
 -export([nodes/0]).
@@ -124,7 +123,7 @@
 -export([crc32/2, crc32_combine/3, date/0, decode_packet/3]).
 -export([delete_element/2]).
 -export([delete_module/1, demonitor/1, demonitor/2, display/1]).
--export([display_nl/0, display_string/1, dist_exit/3, erase/0, erase/1]).
+-export([display_nl/0, display_string/1, erase/0, erase/1]).
 -export([error/1, error/2, exit/1, exit/2, external_size/1]).
 -export([external_size/2, finish_after_on_load/2, finish_loading/1, float/1]).
 -export([float_to_binary/1, float_to_binary/2,
@@ -427,9 +426,11 @@ binary_to_term(_Binary) ->
     erlang:nif_error(undefined).
 
 %% binary_to_term/2
--spec binary_to_term(Binary, Opts) -> term() when
+-spec binary_to_term(Binary, Opts) -> term() | {term(), Used} when
       Binary :: ext_binary(),
-      Opts :: [safe].
+      Opt :: safe | used,
+      Opts :: [Opt],
+      Used :: pos_integer().
 binary_to_term(_Binary, _Opts) ->
     erlang:nif_error(undefined).
 
@@ -702,14 +703,6 @@ display_nl() ->
 display_string(_P1) ->
     erlang:nif_error(undefined).
 
-%% dist_exit/3
--spec erlang:dist_exit(P1, P2, P3) -> true when
-      P1 :: pid(),
-      P2 :: kill | noconnection | normal,
-      P3 :: pid() | port().
-dist_exit(_P1, _P2, _P3) ->
-    erlang:nif_error(undefined).
-
 %% dt_append_vm_tag_data/1
 -spec erlang:dt_append_vm_tag_data(IoData) -> IoDataRet when
       IoData :: iodata(),
@@ -2110,7 +2103,7 @@ nodes(_Arg) ->
            | stream
            | {line, L :: non_neg_integer()}
            | {cd, Dir :: string() | binary()}
-           | {env, Env :: [{Name :: string(), Val :: string() | false}]}
+           | {env, Env :: [{Name :: os:env_var_name(), Val :: os:env_var_value() | false}]}
            | {args, [string() | binary()]}
            | {arg0, string() | binary()}
            | exit_status
@@ -3265,34 +3258,11 @@ dist_ctrl_get_data_notification(_DHandle) ->
 dist_get_stat(_DHandle) ->
     erlang:nif_error(undefined).
 
-%%
-%% If the emulator wants to perform a distributed command and
-%% a connection is not established to the actual node the following 
-%% functions are called in order to set up the connection and then
-%% reactivate the command.
-%%
-
--spec erlang:dlink(pid() | port()) -> 'true'.
-dlink(Pid) ->
-    case net_kernel:connect(erlang:node(Pid)) of
-	true -> erlang:link(Pid);
-	false -> erlang:dist_exit(erlang:self(), noconnection, Pid), true
-    end.
-
-%% Can this ever happen?
--spec erlang:dunlink(identifier()) -> 'true'.
-dunlink(Pid) ->
-    case net_kernel:connect(erlang:node(Pid)) of
-	true -> erlang:unlink(Pid);
-	false -> true
-    end.
-
-dmonitor_node(Node, Flag, []) ->
-    case net_kernel:connect(Node) of
-	true -> erlang:monitor_node(Node, Flag, []);
-	false -> erlang:self() ! {nodedown, Node}, true
-    end;
 
+dmonitor_node(Node, _Flag, []) ->
+    %% Only called when auto-connect attempt failed early in VM
+    erlang:self() ! {nodedown, Node},
+    true;
 dmonitor_node(Node, Flag, Opts) ->
     case lists:member(allow_passive_connect, Opts) of
 	true ->
@@ -3304,71 +3274,12 @@ dmonitor_node(Node, Flag, Opts) ->
 	    dmonitor_node(Node,Flag,[])
     end.
 
-dgroup_leader(Leader, Pid) ->
-    case net_kernel:connect(erlang:node(Pid)) of
-	true -> erlang:group_leader(Leader, Pid);
-	false -> true  %% bad arg ?
-    end.
-
-dexit(Pid, Reason) -> 
-    case net_kernel:connect(erlang:node(Pid)) of
-	true -> erlang:exit(Pid, Reason);
-	false -> true
-    end.
-
-dsend(Pid, Msg) when erlang:is_pid(Pid) ->
-    case net_kernel:connect(erlang:node(Pid)) of
-	true -> erlang:send(Pid, Msg);
-	false -> Msg
-    end;
-dsend(Port, Msg) when erlang:is_port(Port) ->
-    case net_kernel:connect(erlang:node(Port)) of
-	true -> erlang:send(Port, Msg);
-	false -> Msg
-    end;
-dsend({Name, Node}, Msg) ->
-    case net_kernel:connect(Node) of
-	true -> erlang:send({Name,Node}, Msg);
-	false -> Msg;
-	ignored -> Msg				% Not distributed.
-    end.
-
-dsend(Pid, Msg, Opts) when erlang:is_pid(Pid) ->
-    case net_kernel:connect(erlang:node(Pid)) of
-	true -> erlang:send(Pid, Msg, Opts);
-	false -> ok
-    end;
-dsend(Port, Msg, Opts) when erlang:is_port(Port) ->
-    case net_kernel:connect(erlang:node(Port)) of
-	true -> erlang:send(Port, Msg, Opts);
-	false -> ok
-    end;
-dsend({Name, Node}, Msg, Opts) ->
-    case net_kernel:connect(Node) of
-	true -> erlang:send({Name,Node}, Msg, Opts);
-	false -> ok;
-	ignored -> ok				% Not distributed.
-    end.
-
 -spec erlang:dmonitor_p('process', pid() | {atom(),atom()}) -> reference().
 dmonitor_p(process, ProcSpec) ->
-    %% ProcSpec = pid() | {atom(),atom()}
-    %% ProcSpec CANNOT be an atom because a locally registered process
-    %% is never handled here.
-    Node = case ProcSpec of
-	       {S,N} when erlang:is_atom(S),
-                          erlang:is_atom(N),
-                          N =/= erlang:node() -> N;
-	       _ when erlang:is_pid(ProcSpec) -> erlang:node(ProcSpec)
-	   end,
-    case net_kernel:connect(Node) of
-	true ->
-	    erlang:monitor(process, ProcSpec);
-	false ->
-	    Ref = erlang:make_ref(),
-	    erlang:self() ! {'DOWN', Ref, process, ProcSpec, noconnection},
-	    Ref
-    end.
+    %% Only called when auto-connect attempt failed early in VM
+    Ref = erlang:make_ref(),
+    erlang:self() ! {'DOWN', Ref, process, ProcSpec, noconnection},
+    Ref.
 
 %%
 %% Trap function used when modified timing has been enabled.
diff --git a/erts/preloaded/src/erts.app.src b/erts/preloaded/src/erts.app.src
index beb29a7c89..338f168158 100644
--- a/erts/preloaded/src/erts.app.src
+++ b/erts/preloaded/src/erts.app.src
@@ -28,6 +28,7 @@
 		init,
 		otp_ring0,
 		erts_code_purger,
+		prim_buffer,
 		prim_eval,
 		prim_file,
 		prim_inet,
@@ -37,7 +38,7 @@
 	{registered, []},
 	{applications, []},
 	{env, []},
-	{runtime_dependencies, ["stdlib-3.4.3", "kernel-5.4.1", "sasl-3.0.1"]}
+	{runtime_dependencies, ["stdlib-3.5", "kernel-6.0", "sasl-3.0.1"]}
     ]}.
 
 %% vim: ft=erlang
diff --git a/erts/preloaded/src/erts_internal.erl b/erts/preloaded/src/erts_internal.erl
index bb1824ecd4..ffa9217c4d 100644
--- a/erts/preloaded/src/erts_internal.erl
+++ b/erts/preloaded/src/erts_internal.erl
@@ -32,7 +32,7 @@
 -export([await_port_send_result/3]).
 -export([cmp_term/2]).
 -export([map_to_tuple_keys/1, term_type/1, map_hashmap_children/1,
-         maps_to_list/2]).
+         map_next/3]).
 -export([open_port/2, port_command/3, port_connect/2, port_close/1,
 	 port_control/3, port_call/3, port_info/1, port_info/2]).
 
@@ -63,6 +63,9 @@
 
 -export([dist_ctrl_put_data/2]).
 
+-export([new_connection/1]).
+-export([abort_connection/2]).
+
 %% Auto import name clash
 -export([check_process_code/1]).
 
@@ -367,20 +370,23 @@ term_type(_T) ->
 map_hashmap_children(_M) ->
     erlang:nif_error(undefined).
 
+%% return the next assoc in the iterator and a new iterator
+-spec map_next(I, M, A) -> {K,V,NI} | list() when
+      I :: non_neg_integer(),
+      M :: map(),
+      K :: term(),
+      V :: term(),
+      A :: iterator | list(),
+      NI :: maps:iterator().
+
+map_next(_I, _M, _A) ->
+    erlang:nif_error(undefined).
+
 -spec erts_internal:flush_monitor_messages(Ref, Multi, Res) -> term() when
       Ref :: reference(),
       Multi :: boolean(),
       Res :: term().
 
-%% return a list of key value pairs, at most of length N
--spec maps_to_list(M,N) -> Pairs when
-    M :: map(),
-    N :: integer(),
-    Pairs :: list().
-
-maps_to_list(_M, _N) ->
-    erlang:nif_error(undefined).
-
 %% erlang:demonitor(Ref, [flush]) traps to
 %% erts_internal:flush_monitor_messages(Ref, Res) when
 %% it needs to flush monitor messages.
@@ -498,3 +504,16 @@ dist_ctrl_put_data(DHandle, IoList) ->
                           | RootST],
 	    erlang:raise(Class, Reason, StackTrace)
     end.
+
+
+-spec erts_internal:new_connection(Node) -> ConnId when
+      Node :: atom(),
+      ConnId :: {integer(), erlang:dist_handle()}.
+new_connection(_Node) ->
+    erlang:nif_error(undefined).
+
+-spec erts_internal:abort_connection(Node, ConnId) -> boolean() when
+      Node :: atom(),
+      ConnId :: {integer(), erlang:dist_handle()}.
+abort_connection(_Node, _ConnId) ->
+    erlang:nif_error(undefined).
diff --git a/erts/preloaded/src/init.erl b/erts/preloaded/src/init.erl
index 34a9f6b8b9..679a2241d2 100644
--- a/erts/preloaded/src/init.erl
+++ b/erts/preloaded/src/init.erl
@@ -200,10 +200,11 @@ boot(BootArgs) ->
     register(init, self()),
     process_flag(trap_exit, true),
 
-    %% Load the zlib nif
+    %% Load the static nifs
     zlib:on_load(),
-    %% Load the tracer nif
     erl_tracer:on_load(),
+    prim_buffer:on_load(),
+    prim_file:on_load(),
 
     {Start0,Flags,Args} = parse_boot_args(BootArgs),
     %% We don't get to profile parsing of BootArgs
diff --git a/erts/preloaded/src/prim_buffer.erl b/erts/preloaded/src/prim_buffer.erl
new file mode 100644
index 0000000000..e0d35a6792
--- /dev/null
+++ b/erts/preloaded/src/prim_buffer.erl
@@ -0,0 +1,140 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(prim_buffer).
+
+-export([on_load/0]).
+
+%% This is a mutable binary buffer that helps break out buffering logic from
+%% NIFs/drivers, which is often the only thing that prevents the C code from
+%% being reduced to bare system call wrappers.
+%%
+%% All operations in this file are thread-unsafe and risk crashing the emulator
+%% if you're not careful.
+
+-export([new/0, size/1, wipe/1, read/2, read_iovec/2, write/2, skip/2]).
+
+-export([find_byte_index/2]).
+
+-export([try_lock/1, unlock/1]).
+
+-type prim_buffer() :: term().
+
+%% Controls when to copy rather than extract sub-binaries from the buffer,
+%% reducing the risk of small reads keeping a large binary alive.
+-define(COPYING_READ_LIMIT, 512).
+
+%% Reads that fit into heap binaries are always copied since the cost of
+%% peeking binaries that short is largely equivalent to copying.
+-define(ERL_ONHEAP_BIN_LIMIT, 64).
+
+on_load() ->
+    case erlang:load_nif(atom_to_list(?MODULE), 0) of
+        ok -> ok
+    end.
+
+-spec new() -> prim_buffer().
+new() ->
+    erlang:nif_error(undef).
+
+-spec size(Buffer :: prim_buffer()) -> non_neg_integer().
+size(_Buffer) ->
+    erlang:nif_error(undef).
+
+%% Reads data as a binary from the front of the buffer. This will almost always
+%% result in copying so it should be avoided unless you absolutely must have a
+%% binary.
+-spec read(Buffer :: prim_buffer(), Size :: non_neg_integer()) -> binary().
+read(Buffer, Size) when Size =< ?ERL_ONHEAP_BIN_LIMIT ->
+    copying_read(Buffer, Size);
+read(Buffer, Size) when Size > ?ERL_ONHEAP_BIN_LIMIT ->
+    iolist_to_binary(read_iovec(Buffer, Size)).
+
+%% Reads data as an erlang:iovec() binary from the front of the buffer,
+%% avoiding copying if reasonable.
+-spec read_iovec(Buffer, Size) -> IOVec when
+      Buffer :: prim_buffer(),
+      Size :: non_neg_integer(),
+      IOVec :: erlang:iovec().
+read_iovec(Buffer, Size) when Size =< ?ERL_ONHEAP_BIN_LIMIT ->
+    [copying_read(Buffer, Size)];
+read_iovec(Buffer, Size) when Size > ?ERL_ONHEAP_BIN_LIMIT ->
+    Head = peek_head(Buffer),
+    HeadSize = byte_size(Head),
+    if
+        (HeadSize - Size) > ?COPYING_READ_LIMIT, Size =< ?COPYING_READ_LIMIT ->
+            [copying_read(Buffer, Size)];
+        HeadSize > Size ->
+            skip(Buffer, Size),
+            {First, _Rest} = split_binary(Head, Size),
+            [First];
+        HeadSize < Size ->
+            skip(Buffer, HeadSize),
+            [Head | read_iovec(Buffer, Size - HeadSize)];
+        HeadSize =:= Size ->
+            skip(Buffer, Size),
+            [Head]
+    end.
+
+%% Writes an erlang:iovec() to the back of the buffer.
+-spec write(Buffer :: prim_buffer(), IOVec :: erlang:iovec()) -> ok.
+write(_Buffer, _IOVec) ->
+    erlang:nif_error(undef).
+
+%% Removes data from the front of the buffer without reading it.
+-spec skip(Buffer :: prim_buffer(), Size :: non_neg_integer()) -> ok.
+skip(_Buffer, _Size) ->
+    erlang:nif_error(undef).
+
+-spec wipe(Buffer :: prim_buffer()) -> ok.
+wipe(Buffer) ->
+    skip(Buffer, prim_buffer:size(Buffer)).
+
+%% Finds the start-index of the first occurence of Needle, for implementing
+%% read_line and similar.
+-spec find_byte_index(Buffer, Needle) -> Result when
+      Buffer :: prim_buffer(),
+      Needle :: non_neg_integer(),
+      Result :: {ok, non_neg_integer()} |
+                not_found.
+find_byte_index(_Buffer, _Needle) ->
+    erlang:nif_error(undef).
+
+%% Attempts to take a unique lock on the buffer. Failure handling is left to
+%% the user.
+-spec try_lock(Buffer :: prim_buffer()) -> acquired | busy.
+try_lock(_Buffer) ->
+    erlang:nif_error(undef).
+
+-spec unlock(Buffer :: prim_buffer()) -> ok.
+unlock(_Buffer) ->
+    erlang:nif_error(undef).
+
+%% Unexported helper functions:
+
+%% Reads data from the front of the buffer, returning a copy of the data to
+%% avoid holding references.
+-spec copying_read(Buffer :: prim_buffer(), Size :: non_neg_integer()) -> binary().
+copying_read(_Buffer, _Size) ->
+    erlang:nif_error(undef).
+
+%% Returns the binary at the front of the buffer without modifying the buffer.
+-spec peek_head(Buffer :: prim_buffer()) -> binary().
+peek_head(_Buffer) ->
+    erlang:nif_error(undef).
diff --git a/erts/preloaded/src/prim_file.erl b/erts/preloaded/src/prim_file.erl
index ab5359ebbc..35042a7c72 100644
--- a/erts/preloaded/src/prim_file.erl
+++ b/erts/preloaded/src/prim_file.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2000-2016. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2017. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -19,147 +19,45 @@
 %%
 -module(prim_file).
 
-%% Interface module to the file driver.
+-export([on_load/0]).
 
+-export([open/2, close/1,
+         sync/1, datasync/1, truncate/1, advise/4, allocate/3,
+         read_line/1, read/2, write/2, position/2,
+         pread/2, pread/3, pwrite/2, pwrite/3]).
 
+%% OTP internal.
+-export([ipread_s32bu_p32bu/3, sendfile/8, altname/1, get_handle/1]).
 
-%%% Interface towards a single file's contents. Uses ?FD_DRV.
+-export([read_file/1, write_file/2]).
 
-%% Generic file contents operations
--export([open/2, close/1, datasync/1, sync/1, advise/4, position/2, truncate/1,
-	 write/2, pwrite/2, pwrite/3, read/2, read_line/1, pread/2, pread/3,
-	 copy/3, sendfile/8, allocate/3]).
+-export([read_link/1, read_link_all/1,
+         read_link_info/1, read_link_info/2,
+         read_file_info/1, read_file_info/2,
+         write_file_info/2, write_file_info/3]).
 
-%% Specialized file operations
--export([open/1, open/3]).
--export([read_file/1, read_file/2, write_file/2]).
--export([ipread_s32bu_p32bu/3]).
+-export([list_dir/1, list_dir_all/1]).
 
+-export([get_cwd/0, get_cwd/1, set_cwd/1,
+         delete/1, rename/2,
+         make_dir/1, del_dir/1,
+         make_link/2, make_symlink/2]).
 
-
-%%% Interface towards file system and metadata. Uses ?DRV.
-
-%% Takes an optional port (opens a ?DRV port per default) as first argument.
--export([get_cwd/0, get_cwd/1, get_cwd/2, 
-	 set_cwd/1, set_cwd/2,
-	 delete/1, delete/2, 
-	 rename/2, rename/3, 
-	 make_dir/1, make_dir/2,
-	 del_dir/1, del_dir/2,
-	 read_file_info/1, read_file_info/2, read_file_info/3,
-	 altname/1, altname/2,
-	 write_file_info/2, write_file_info/3, write_file_info/4,
-	 make_link/2, make_link/3,
-	 make_symlink/2, make_symlink/3,
-	 read_link/1, read_link/2, read_link_all/1, read_link_all/2,
-	 read_link_info/1, read_link_info/2, read_link_info/3,
-	 list_dir/1, list_dir/2, list_dir_all/1, list_dir_all/2]).
-%% How to start and stop the ?DRV port.
--export([start/0, stop/1]).
-
-%% Debug exports
--export([open_int/4, open_mode/1, open_mode/4]).
-
-%%%-----------------------------------------------------------------
-%%% Includes and defines
-
--include("file.hrl").
-
--define(DRV,    "efile").
--define(FD_DRV, "efile").
-
+-define(MIN_READLINE_SIZE, 256).
 -define(LARGEFILESIZE, (1 bsl 63)).
 
-%% Driver commands
--define(FILE_OPEN,             1).
--define(FILE_READ,             2).
--define(FILE_LSEEK,            3).
--define(FILE_WRITE,            4).
--define(FILE_FSTAT,            5).
--define(FILE_PWD,              6).
--define(FILE_READDIR,          7).
--define(FILE_CHDIR,            8).
--define(FILE_FSYNC,            9).
--define(FILE_MKDIR,            10).
--define(FILE_DELETE,           11).
--define(FILE_RENAME,           12).
--define(FILE_RMDIR,            13).
--define(FILE_TRUNCATE,         14).
--define(FILE_READ_FILE,        15).
--define(FILE_WRITE_INFO,       16).
--define(FILE_LSTAT,            19).
--define(FILE_READLINK,         20).
--define(FILE_LINK,             21).
--define(FILE_SYMLINK,          22).
--define(FILE_CLOSE,            23).
--define(FILE_PWRITEV,          24).
--define(FILE_PREADV,           25).
--define(FILE_SETOPT,           26).
--define(FILE_IPREAD,           27).
--define(FILE_ALTNAME,          28).
--define(FILE_READ_LINE,        29).
--define(FILE_FDATASYNC,        30).
--define(FILE_ADVISE,           31).
--define(FILE_SENDFILE,         32).
--define(FILE_ALLOCATE,         33).
-
-%% Driver responses
--define(FILE_RESP_OK,          0).
--define(FILE_RESP_ERROR,       1).
--define(FILE_RESP_DATA,        2).
--define(FILE_RESP_NUMBER,      3).
--define(FILE_RESP_INFO,        4).
--define(FILE_RESP_NUMERR,      5).
--define(FILE_RESP_LDATA,       6).
--define(FILE_RESP_N2DATA,      7).
--define(FILE_RESP_EOF,         8).
--define(FILE_RESP_FNAME,       9).
--define(FILE_RESP_ALL_DATA,   10).
--define(FILE_RESP_LFNAME,     11).
-
-%% Open modes for the driver's open function.
--define(EFILE_MODE_READ,       1).
--define(EFILE_MODE_WRITE,      2).
--define(EFILE_MODE_READ_WRITE, 3).  
--define(EFILE_MODE_APPEND,     4).
--define(EFILE_COMPRESSED,      8).
--define(EFILE_MODE_EXCL,       16).
-%% Note: bit 5 (32) is used internally for VxWorks
--define(EFILE_MODE_SYNC,       64).
-
-%% Use this mask to get just the mode bits to be passed to the driver.
--define(EFILE_MODE_MASK, 127).
-
-%% Seek modes for the driver's seek function.
--define(EFILE_SEEK_SET, 0).
--define(EFILE_SEEK_CUR, 1).
--define(EFILE_SEEK_END, 2).
-
-%% Options
--define(FILE_OPT_DELAYED_WRITE, 0).
--define(FILE_OPT_READ_AHEAD,    1).
-
-%% IPREAD variants
--define(IPREAD_S32BU_P32BU, 0).
-
-%% POSIX file advises
--define(POSIX_FADV_NORMAL,     0).
--define(POSIX_FADV_RANDOM,     1).
--define(POSIX_FADV_SEQUENTIAL, 2).
--define(POSIX_FADV_WILLNEED,   3).
--define(POSIX_FADV_DONTNEED,   4).
--define(POSIX_FADV_NOREUSE,    5).
-
-%% Sendfile flags
--define(EFILE_SENDFILE_USE_THREADS, 1).
+-export([copy/3]).
 
+-include("file_int.hrl").
+
+-type prim_file_ref() :: term().
 
 %%% BIFs
 
 -export([internal_name2native/1,
          internal_native2name/1,
          internal_normalize_utf8/1,
-	 is_translatable/1]).
+         is_translatable/1]).
 
 -type prim_file_name() :: string() | unicode:unicode_binary().
 -type prim_file_name_error() :: 'error' | 'ignore' | 'warning'.
@@ -185,1316 +83,733 @@ internal_normalize_utf8(_) ->
 is_translatable(_) ->
     erlang:nif_error(undefined).
 
-%%% End of BIFs
-
-%%%-----------------------------------------------------------------
-%%% Functions operating on a file through a handle. ?FD_DRV.
-%%%
-%%% Generic file contents operations.
-%%%
-%%% Supposed to be called by applications through module file.
-
-
-%% Opens a file using the driver port Port. Returns {error, Reason}
-%% | {ok, FileDescriptor}
-open(Port, File, ModeList) when is_port(Port), 
-                                (is_list(File) orelse is_binary(File)), 
-                                is_list(ModeList) ->
-    case open_mode(ModeList) of
-	{Mode, _Portopts, _Setopts} ->
-	    open_int(Port, File, Mode, []);
-	Reason ->
-	    {error, Reason}
-    end;
-open(_,_,_) ->
-    {error, badarg}.
-
-%% Opens a file. Returns {error, Reason} | {ok, FileDescriptor}.
-open(File, ModeList) when (is_list(File) orelse is_binary(File)), 
-			  is_list(ModeList) ->
-    case open_mode(ModeList) of
-	{Mode, Portopts, Setopts} ->
-	    open_int({?FD_DRV, Portopts},File, Mode, Setopts);
-	Reason ->
-	    {error, Reason}
-    end;
-open(_, _) ->
-    {error, badarg}.
+%%
 
-%% Opens a port that can be used for open/3 or read_file/2.
-%% Returns {ok, Port} | {error, Reason}.
-open(Portopts) when is_list(Portopts) ->
-    drv_open(?FD_DRV, [binary|Portopts]);
-open(_) ->
-    {error, badarg}.
+%% Returns {error, Reason} | {ok, BytesCopied}
+copy(#file_descriptor{module = ?MODULE} = Source,
+     #file_descriptor{module = ?MODULE} = Dest,
+     Length)
+  when is_integer(Length), Length >= 0;
+       is_atom(Length) ->
+    %% XXX Should be moved down to the driver for optimization.
+    file:copy_opened(Source, Dest, Length).
 
-open_int({Driver, Portopts}, File, Mode, Setopts) ->
-    case drv_open(Driver, Portopts) of
-	{ok, Port} ->
-	    open_int(Port, File, Mode, Setopts);
-	{error, _} = Error ->
-	    Error
-    end;
-open_int(Port, File, Mode, Setopts) ->
-    M = Mode band ?EFILE_MODE_MASK,
-    case drv_command(Port, [<<?FILE_OPEN, M:32>>, pathname(File)]) of
-	{ok, Number} ->
-	    open_int_setopts(Port, Number, Setopts);
-	Error ->
-	    drv_close(Port),
-	    Error
-    end.
+on_load() ->
+    ok = erlang:load_nif(atom_to_list(?MODULE), 0).
 
-open_int_setopts(Port, Number, []) ->
-    {ok, #file_descriptor{module = ?MODULE, data = {Port, Number}}};    
-open_int_setopts(Port, Number, [Cmd | Tail]) ->
-    case drv_command(Port, Cmd) of
-	ok ->
-	    open_int_setopts(Port, Number, Tail);
-	Error ->
-	    drv_close(Port),
-	    Error
+open(Name, Modes) ->
+    %% The try/catch pattern seen here is used throughout the file to adhere to
+    %% the public file interface, which has leaked through for ages because of
+    %% "raw files."
+    try open_nif(encode_path(Name), Modes) of
+        {ok, Ref} -> {ok, make_fd(Ref, Modes)};
+        {error, Reason} -> {error, Reason}
+    catch
+        error:badarg -> {error, badarg}
     end.
 
+make_fd(FRef, Modes) ->
+    #file_descriptor{module = ?MODULE, data = build_fd_data(FRef, Modes) }.
 
-
-%% Returns ok.
-
-close(#file_descriptor{module = ?MODULE, data = {Port, _}}) ->
-    case drv_command(Port, <<?FILE_CLOSE>>) of
-	ok ->
-	    drv_close(Port);
-	Error ->
-	    Error
-    end;
-%% Closes a port opened with open/1.
-close(Port) when is_port(Port) ->
-    drv_close(Port).
-
--define(ADVISE(Offs, Len, Adv),
-	<<?FILE_ADVISE, Offs:64/signed, Len:64/signed,
-	  Adv:32/signed>>).
-
-%% Returns {error, Reason} | ok.
-advise(#file_descriptor{module = ?MODULE, data = {Port, _}},
-       Offset, Length, Advise) ->
-    case Advise of
-	normal ->
-	    Cmd = ?ADVISE(Offset, Length, ?POSIX_FADV_NORMAL),
-	    drv_command(Port, Cmd);
-	random ->
-	    Cmd = ?ADVISE(Offset, Length, ?POSIX_FADV_RANDOM),
-	    drv_command(Port, Cmd);
-	sequential ->
-	    Cmd = ?ADVISE(Offset, Length, ?POSIX_FADV_SEQUENTIAL),
-	    drv_command(Port, Cmd);
-	will_need ->
-	    Cmd = ?ADVISE(Offset, Length, ?POSIX_FADV_WILLNEED),
-	    drv_command(Port, Cmd);
-	dont_need ->
-	    Cmd = ?ADVISE(Offset, Length, ?POSIX_FADV_DONTNEED),
-	    drv_command(Port, Cmd);
-	no_reuse ->
-	    Cmd = ?ADVISE(Offset, Length, ?POSIX_FADV_NOREUSE),
-	    drv_command(Port, Cmd);
-	_ ->
-	    {error, einval}
+close(Fd) ->
+    try
+        #{ handle := FRef } = get_fd_data(Fd),
+        close_nif(FRef)
+    catch
+        error:badarg -> {error, badarg}
     end.
 
-%% Returns {error, Reason} | ok.
-allocate(#file_descriptor{module = ?MODULE, data = {Port, _}}, Offset, Length) ->
-    Cmd = <<?FILE_ALLOCATE, Offset:64/signed, Length:64/signed>>,
-    drv_command(Port, Cmd).
-
-%% Returns {error, Reason} | ok.
-write(#file_descriptor{module = ?MODULE, data = {Port, _}}, Bytes) ->
-    case drv_command_nt(Port, [?FILE_WRITE,erlang:dt_prepend_vm_tag_data(Bytes)],undefined) of
-	{ok, _Size} ->
-	    ok;
-	Error ->
-	    Error
+read(Fd, Size) ->
+    try
+        #{ handle := FRef,
+           r_ahead_size := RASz,
+           r_buffer := RBuf } = get_fd_data(Fd),
+        read_1(FRef, RBuf, prim_buffer:size(RBuf), RASz, Size)
+    catch
+        error:badarg -> {error, badarg}
     end.
 
-%% Returns ok | {error, {WrittenCount, Reason}}
-pwrite(#file_descriptor{module = ?MODULE, data = {Port, _}}, L)
-  when is_list(L) ->
-    pwrite_int(Port, L, 0, [], []).
-
-pwrite_int(_, [], 0, [], []) ->
-    ok;
-pwrite_int(Port, [], N, Spec, Data) ->
-    Header = list_to_binary([?FILE_PWRITEV, erlang:dt_prepend_vm_tag_data(<<N:32>>) | reverse(Spec)]),
-    case drv_command_nt(Port, [Header | reverse(Data)], undefined) of
-	{ok, _Size} ->
-	    ok;
-	Error ->
-	    Error
-    end;
-pwrite_int(Port, [{Offs, Bytes} | T], N, Spec, Data)
-  when is_integer(Offs) ->
-    if
-	-(?LARGEFILESIZE) =< Offs, Offs < ?LARGEFILESIZE ->
-	    pwrite_int(Port, T, N, Spec, Data, Offs, Bytes);
-	true ->
-	    {error, einval}
+-spec read_1(FRef, RBuf, RBufSz, RASz, RSz) -> Result when
+      FRef :: prim_file_ref(),
+      RBuf :: term(),
+      RBufSz :: non_neg_integer(),
+      RASz :: non_neg_integer(),
+      RSz :: non_neg_integer(),
+      Result :: eof | {ok, binary()} | {error, Reason :: atom()}.
+read_1(_FRef, RBuf, RBufSz, _RASz, RSz) when RBufSz >= RSz ->
+    {ok, prim_buffer:read(RBuf, RSz)};
+read_1(FRef, RBuf, RBufSz, RASz, RSz) when RBufSz > 0 ->
+    Buffered = prim_buffer:read(RBuf, RBufSz),
+    case read_1(FRef, RBuf, 0, RASz, RSz - RBufSz) of
+        {ok, Data} ->
+            {ok, <<Buffered/binary, Data/binary>>};
+        eof ->
+            {ok, Buffered};
+        {error, Reason} ->
+            {error, Reason}
     end;
-pwrite_int(_, [_|_], _N, _Spec, _Data) ->
-    {error, badarg}.
+read_1(FRef, RBuf, RBufSz, RASz, RSz) when RBufSz =:= 0 ->
+    case read_nif(FRef, RASz + RSz) of
+        {ok, Data} when byte_size(Data) > RSz ->
+            {First, Rest} = split_binary(Data, RSz),
+            prim_buffer:write(RBuf, [Rest]),
+            {ok, First};
+        {ok, Data} when byte_size(Data) =< RSz ->
+            {ok, Data};
+        eof ->
+            eof;
+        {error, Reason} ->
+            {error, Reason}
+    end.
 
-pwrite_int(Port, T, N, Spec, Data, Offs, Bin)
-  when is_binary(Bin) ->
-    Size = byte_size(Bin),
-    pwrite_int(Port, T, N+1, 
-	       [<<Offs:64/signed, Size:64>> | Spec], 
-	       [Bin | Data]);
-pwrite_int(Port, T, N, Spec, Data, Offs, Bytes) ->
-    try list_to_binary(Bytes) of
-	Bin ->
-	    pwrite_int(Port, T, N, Spec, Data, Offs, Bin)
+read_line(Fd) ->
+    try
+        #{ handle := FRef,
+           r_ahead_size := RASz,
+           r_buffer := RBuf } = get_fd_data(Fd),
+        SearchResult = prim_buffer:find_byte_index(RBuf, $\n),
+        LineSize = max(?MIN_READLINE_SIZE, RASz),
+        read_line_1(FRef, RBuf, SearchResult, LineSize)
     catch
-	error:Reason ->
-	    {error, Reason}
+        error:badarg -> {error, badarg}
     end.
 
-
-
-%% Returns {error, Reason} | ok.
-pwrite(#file_descriptor{module = ?MODULE, data = {Port, _}}, Offs, Bytes) 
-  when is_integer(Offs) ->
-    if
-	-(?LARGEFILESIZE) =< Offs, Offs < ?LARGEFILESIZE ->
-	    case pwrite_int(Port, [], 0, [], [], Offs, Bytes) of
-		{error, {_, Reason}} ->
-		    {error, Reason};
-		Result ->
-		    Result
-	    end;
-	true ->
-	    {error, einval}
+-spec read_line_1(FRef, RBuf, SearchResult, LineSize) -> Result when
+      FRef :: prim_file_ref(),
+      RBuf :: term(),
+      SearchResult :: not_found | {ok, non_neg_integer()},
+      LineSize :: non_neg_integer(),
+      Result :: eof | {ok, binary()} | {error, Reason :: atom()}.
+read_line_1(FRef, RBuf, not_found, LineSize) ->
+    case read_nif(FRef, LineSize) of
+        {ok, Data} ->
+            prim_buffer:write(RBuf, [Data]),
+            SearchResult = prim_buffer:find_byte_index(RBuf, $\n),
+            read_line_1(FRef, RBuf, SearchResult, LineSize);
+        eof ->
+            case prim_buffer:size(RBuf) of
+                Size when Size > 0 -> {ok, prim_buffer:read(RBuf, Size)};
+                Size when Size =:= 0 -> eof
+            end;
+        {error, Reason} ->
+            {error, Reason}
     end;
-pwrite(#file_descriptor{module = ?MODULE}, _, _) ->
-    {error, badarg}.
-
+read_line_1(_FRef, RBuf, {ok, LFIndex}, _LineSize) ->
+    %% Translate CRLF into just LF, completely ignoring which encoding is used.
+    CRIndex = (LFIndex - 1),
+    case prim_buffer:read(RBuf, LFIndex + 1) of
+        <<Line:CRIndex/binary, "\r\n">> -> {ok, <<Line/binary, "\n">>};
+        Line -> {ok, Line}
+    end.
 
-%% Returns {error, Reason} | ok.
-datasync(#file_descriptor{module = ?MODULE, data = {Port, _}}) ->
-    drv_command(Port, [?FILE_FDATASYNC]).
-
-%% Returns {error, Reason} | ok.
-sync(#file_descriptor{module = ?MODULE, data = {Port, _}}) ->
-    drv_command(Port, [?FILE_FSYNC]).
-
-%% Returns {ok, Data} | eof | {error, Reason}.
-read_line(#file_descriptor{module = ?MODULE, data = {Port, _}}) ->
-    case drv_command(Port, <<?FILE_READ_LINE>>) of
-	{ok, {0, _Data}} ->
-	    eof;
-	{ok, {_Size, Data}} ->
-	    {ok, Data};
-	{error, enomem} ->
-	    erlang:garbage_collect(),
-	    case drv_command(Port, <<?FILE_READ_LINE>>) of
-		{ok, {0, _Data}} ->
-		    eof;
-		{ok, {_Size, Data}} ->
-		    {ok, Data};
-		Other ->
-		    Other
-	    end;
-	Error ->
-	    Error
+write(Fd, IOData) ->
+    try
+        #{ handle := FRef } = get_fd_data(Fd),
+        reset_write_position(Fd),
+        write_1(FRef, erlang:iolist_to_iovec(IOData))
+    catch
+        error:badarg -> {error, badarg}
     end.
-	
-%% Returns {ok, Data} | eof | {error, Reason}.
-read(#file_descriptor{module = ?MODULE, data = {Port, _}}, Size)
-  when is_integer(Size), 0 =< Size ->
-    if
-	Size < ?LARGEFILESIZE ->
-	    case drv_command(Port, <<?FILE_READ, Size:64>>) of
-		{ok, {0, _Data}} when Size =/= 0 ->
-		    eof;
-		{ok, {_Size, Data}} ->
-		    {ok, Data};
-		{error, enomem} ->
-		    %% Garbage collecting here might help if
-		    %% the current processes have some old binaries left.
-		    erlang:garbage_collect(),
-		    case drv_command(Port, <<?FILE_READ, Size:64>>) of
-			{ok, {0, _Data}} when Size =/= 0 ->
-			    eof;
-			{ok, {_Size, Data}} ->
-			    {ok, Data};
-			Other ->
-			    Other
-		    end;
-		Error ->
-		    Error
-	    end;
-	true ->
-	    {error, einval}
+write_1(FRef, IOVec) ->
+    case write_nif(FRef, IOVec) of
+        {continue, Remainder} ->
+            write_1(FRef, Remainder);
+        ok ->
+            ok;
+        {error, Reason} ->
+            {error, Reason}
     end.
 
-%% Returns {ok, [Data|eof, ...]} | {error, Reason}
-pread(#file_descriptor{module = ?MODULE, data = {Port, _}}, L)
-  when is_list(L) ->
-    pread_int(Port, L, 0, []).
-
-pread_int(_, [], 0, []) ->
-    {ok, []};
-pread_int(Port, [], N, Spec) ->
-    drv_command_nt(Port, [?FILE_PREADV, erlang:dt_prepend_vm_tag_data(<<0:32, N:32>>) | reverse(Spec)],undefined);
-pread_int(Port, [{Offs, Size} | T], N, Spec)
-  when is_integer(Offs), is_integer(Size), 0 =< Size ->
-    if
-	-(?LARGEFILESIZE) =< Offs, Offs < ?LARGEFILESIZE,
-	Size < ?LARGEFILESIZE ->
-	    pread_int(Port, T, N+1, [<<Offs:64/signed, Size:64>> | Spec]);
-	true ->
-	    {error, einval}
-    end;
-pread_int(_, [_|_], _N, _Spec) ->
-    {error, badarg}.
-
-
-
-%% Returns {ok, Data} | eof | {error, Reason}.
-pread(#file_descriptor{module = ?MODULE, data = {Port, _}}, Offs, Size) 
-  when is_integer(Offs), is_integer(Size), 0 =< Size ->
-    if
-	-(?LARGEFILESIZE) =< Offs, Offs < ?LARGEFILESIZE,
-	Size < ?LARGEFILESIZE ->
-	    case drv_command_nt(Port, 
-				[?FILE_PREADV, erlang:dt_prepend_vm_tag_data(<<0:32, 1:32,
-									     Offs:64/signed, Size:64>>)], undefined) of
-		{ok, [eof]} ->
-		    eof;
-		{ok, [Data]} ->
-		    {ok, Data};
-		Error ->
-		    Error
-	    end;
-	true ->
-	    {error, einval}
-    end;
-pread(#file_descriptor{module = ?MODULE, data = {_, _}}, _, _) ->
-    {error, badarg}.
-
-
-
-%% Returns {ok, Position} | {error, Reason}.
-position(#file_descriptor{module = ?MODULE, data = {Port, _}}, At) ->
-    case lseek_position(At) of
-	{Offs, Whence}
-	when -(?LARGEFILESIZE) =< Offs, Offs < ?LARGEFILESIZE ->
-	    drv_command(Port, <<?FILE_LSEEK, Offs:64/signed, Whence:32>>);
-	{_, _} ->
-	    {error, einval};
-	Reason ->
-	    {error, Reason}
+truncate(Fd) ->
+    try
+        #{ handle := FRef } = get_fd_data(Fd),
+        reset_write_position(Fd),
+        truncate_nif(FRef)
+    catch
+        error:badarg -> {error, badarg}
     end.
 
-%% Returns {error, Reason} | ok.
-truncate(#file_descriptor{module = ?MODULE, data = {Port, _}}) ->
-    drv_command(Port, <<?FILE_TRUNCATE>>).
-
-
-
-%% Returns {error, Reason} | {ok, BytesCopied}
-copy(#file_descriptor{module = ?MODULE} = Source,
-     #file_descriptor{module = ?MODULE} = Dest,
-     Length)
-  when is_integer(Length), Length >= 0;
-       is_atom(Length) ->
-    %% XXX Should be moved down to the driver for optimization.
-    file:copy_opened(Source, Dest, Length).
-
-
-
-ipread_s32bu_p32bu(#file_descriptor{module = ?MODULE,
-				    data = {_, _}} = Handle,
-		   Offs,
-		   Infinity) when is_atom(Infinity) ->
-    ipread_s32bu_p32bu(Handle, Offs, (1 bsl 31)-1);
-ipread_s32bu_p32bu(#file_descriptor{module = ?MODULE, data = {Port, _}},
-		   Offs,
-		   MaxSize)
-  when is_integer(Offs), is_integer(MaxSize) ->
-    if
-	-(?LARGEFILESIZE) =< Offs, Offs < ?LARGEFILESIZE,
-	0 =< MaxSize, MaxSize < (1 bsl 31) ->
-	    drv_command(Port, <<?FILE_IPREAD, ?IPREAD_S32BU_P32BU,
-			       Offs:64, MaxSize:32>>);
-	true ->
-	    {error, einval}
-    end;
-ipread_s32bu_p32bu(#file_descriptor{module = ?MODULE, data = {_, _}},
-		   _Offs,
-		   _MaxSize) ->
-    {error, badarg}.
+advise(Fd, Offset, Length, Advise) ->
+    try
+        #{ handle := FRef } = get_fd_data(Fd),
+        advise_nif(FRef, Offset, Length, Advise)
+    catch
+        error:badarg -> {error, badarg}
+    end.
 
+allocate(Fd, Offset, Length) ->
+    try
+        #{ handle := FRef } = get_fd_data(Fd),
+        allocate_nif(FRef, Offset, Length)
+    catch
+        error:badarg -> {error, badarg}
+    end.
 
+sync(Fd) ->
+    try
+        #{ handle := FRef } = get_fd_data(Fd),
+        sync_nif(FRef, 0)
+    catch
+        error:badarg -> {error, badarg}
+    end.
 
-%% Returns {ok, Contents} | {error, Reason}
-read_file(File) when (is_list(File) orelse is_binary(File)) ->
-    case drv_open(?FD_DRV, [binary]) of
-	{ok, Port} ->
-	    Result = read_file(Port, File),
-	    close(Port),
-	    Result;
-	{error, _} = Error ->
-	    Error
-    end;
-read_file(_) ->
-    {error, badarg}.
+datasync(Fd) ->
+    try
+        #{ handle := FRef } = get_fd_data(Fd),
+        sync_nif(FRef, 1)
+    catch
+        error:badarg -> {error, badarg}
+    end.
 
-%% Takes a Port opened with open/1.
-read_file(Port, File) when is_port(Port),
-			   (is_list(File) orelse is_binary(File)) ->
-    Cmd = [?FILE_READ_FILE | pathname(File)],
-    case drv_command(Port, Cmd) of
-	{error, enomem} ->
-	    %% It could possibly help to do a 
-	    %% garbage collection here, 
-	    %% if the file server has some references
-	    %% to binaries read earlier.
-	    erlang:garbage_collect(),
-	    drv_command(Port, Cmd);
-	Result ->
-	    Result
+position(Fd, {cur, Offset}) ->
+    try
+        %% Adjust our current position according to how much we've read ahead.
+        #{ r_buffer := RBuf } = get_fd_data(Fd),
+        position_1(Fd, cur, Offset - prim_buffer:size(RBuf))
+    catch
+        error:badarg -> {error, badarg}
     end;
-read_file(_,_) ->
-    {error, badarg}.
-
-    
-
-%% Returns {error, Reason} | ok.
-write_file(File, Bin) when (is_list(File) orelse is_binary(File)) ->
-    case open(File, [binary, write]) of
-	{ok, Handle} ->
-	    Result = write(Handle, Bin),
-	    close(Handle),
-	    Result;
-	Error ->
-	    Error
+position(Fd, {Mark, Offset}) ->
+    try
+        position_1(Fd, Mark, Offset)
+    catch
+        error:badarg -> {error, badarg}
     end;
-write_file(_, _) -> 
-    {error, badarg}.
+position(Fd, cur) -> position(Fd, {cur, 0});
+position(Fd, bof) -> position(Fd, {bof, 0});
+position(Fd, eof) -> position(Fd, {eof, 0});
+position(Fd, Offset) -> position(Fd, {bof, Offset}).
 
+position_1(Fd, Mark, Offset) ->
+    #{ handle := FRef, r_buffer := RBuf } = get_fd_data(Fd),
+    prim_buffer:wipe(RBuf),
+    seek_nif(FRef, Mark, Offset).
 
-%% Returns {error, Reason} | {ok, BytesCopied}
-%sendfile(_,_,_,_,_,_,_,_,_,_) ->
-%    {error, enotsup};
-sendfile(#file_descriptor{module = ?MODULE, data = {Port, _}},
-	 Dest, Offset, Bytes, _ChunkSize, Headers, Trailers,
-	 Flags) ->
-    case erlang:port_get_data(Dest) of
-	Data when Data == inet_tcp; Data == inet6_tcp ->
-	    ok = inet:lock_socket(Dest,true),
-	    {ok, DestFD} = prim_inet:getfd(Dest),
-	    IntFlags = translate_sendfile_flags(Flags),
-	    try drv_command(Port, [<<?FILE_SENDFILE, DestFD:32,
-				     IntFlags:8,
-				     Offset:64/unsigned,
-				     Bytes:64/unsigned,
-				     (iolist_size(Headers)):32/unsigned,
-				     (iolist_size(Trailers)):32/unsigned>>,
-				   Headers,Trailers])
-	    after
-		ok = inet:lock_socket(Dest,false)
-	    end;
-	_Else ->
-	    {error,badarg}
+pread(Fd, Offset, Size) ->
+    try
+        #{ handle := FRef } = get_fd_data(Fd),
+        pread_nif(FRef, Offset, Size)
+    catch
+        error:badarg -> {error, badarg}
     end.
 
-translate_sendfile_flags([{use_threads,true}|T]) ->
-    ?EFILE_SENDFILE_USE_THREADS bor translate_sendfile_flags(T);
-translate_sendfile_flags([_|T]) ->
-    translate_sendfile_flags(T);
-translate_sendfile_flags([]) ->
-    0.
-
-
-%%%-----------------------------------------------------------------
-%%% Functions operating on files without handle to the file. ?DRV.
-%%%
-%%% Supposed to be called by applications through module file.
-
-
-
-%% Returns {ok, Port}, the Port should be used as first argument in all
-%% the following functions. Returns {error, Reason} upon failure.
-start() ->
-    drv_open(?DRV, [binary]).
-
-stop(Port) when is_port(Port) ->
-    try erlang:port_close(Port) of
-	_ ->
-	    ok
+pread(Fd, LocNums) ->
+    try
+        #{ handle := FRef } = get_fd_data(Fd),
+        pread_list(FRef, LocNums, [])
     catch
-	_:_ ->
-	    ok
+        error:badarg -> {error, badarg}
     end.
 
+-spec pread_list(FRef, LocNums, ResultList) -> Result when
+      FRef :: prim_file_ref(),
+      LocNums :: list({Offset :: non_neg_integer(),
+                       Size :: non_neg_integer()}),
+      ResultList :: list(eof | binary()),
+      Result :: {ok, ResultList} | {error, Reason :: atom()}.
+pread_list(_FRef, [], ResultList) ->
+    {ok, reverse_list(ResultList)};
+pread_list(FRef, [{Offset, Size} | Rest], ResultList) ->
+    case pread_nif(FRef, Offset, Size) of
+        {ok, Data} ->
+            pread_list(FRef, Rest, [Data | ResultList]);
+        eof ->
+            pread_list(FRef, Rest, [eof | ResultList]);
+        {error, Reason} ->
+            {error, Reason}
+    end.
 
+pwrite(Fd, Offset, IOData) ->
+    try
+        #{ handle := FRef, r_buffer := RBuf } = get_fd_data(Fd),
+        prim_buffer:wipe(RBuf),
+        pwrite_plain(FRef, Offset, erlang:iolist_to_iovec(IOData))
+    catch
+        error:badarg -> {error, badarg}
+    end.
+pwrite_plain(FRef, Offset, IOVec) ->
+    case pwrite_nif(FRef, Offset, IOVec) of
+        {continue, BytesWritten, Remainder} ->
+            pwrite_plain(FRef, Offset + BytesWritten, Remainder);
+        ok ->
+            ok;
+        {error, Reason} ->
+            {error, Reason}
+    end.
 
-%%% The following functions take an optional Port as first argument.
-%%% If the port is not supplied, a temporary one is opened and then
-%%% closed after the request has been performed.
-
-
-
-%% get_cwd/{0,1,2}
-
-get_cwd() ->
-    get_cwd_int(0).
-
-get_cwd(Port) when is_port(Port) ->
-    get_cwd_int(Port, 0);
-get_cwd([]) ->
-    get_cwd_int(0);
-get_cwd([Letter, $: | _]) when $a =< Letter, Letter =< $z ->
-    get_cwd_int(Letter - $a + 1);
-get_cwd([Letter, $: | _]) when $A =< Letter, Letter =< $Z ->
-    get_cwd_int(Letter - $A + 1);
-get_cwd([_|_]) ->
-    {error, einval};
-get_cwd(_) ->
-    {error, badarg}.
-
-get_cwd(Port, []) when is_port(Port) ->
-    get_cwd_int(Port, 0);
-get_cwd(Port, [Letter, $: | _])
-  when is_port(Port), $a =< Letter, Letter =< $z ->
-    get_cwd_int(Port, Letter - $a + 1);
-get_cwd(Port, [Letter, $: | _])
-  when is_port(Port), $A =< Letter, Letter =< $Z ->
-    get_cwd_int(Port, Letter - $A + 1);
-get_cwd(Port, [_|_]) when is_port(Port) ->
-    {error, einval};
-get_cwd(_, _) ->
-    {error, badarg}.
-
-get_cwd_int(Drive) ->
-    get_cwd_int({?DRV, [binary]}, Drive).
-
-get_cwd_int(Port, Drive) ->
-    drv_command(Port, <<?FILE_PWD, Drive>>,
-		fun handle_fname_response/1).
-
-
-
-%% set_cwd/{1,2}
+pwrite(Fd, LocBytes) ->
+    try
+        #{ handle := FRef, r_buffer := RBuf } = get_fd_data(Fd),
+        prim_buffer:wipe(RBuf),
+        pwrite_list(FRef, LocBytes, 0)
+    catch
+        error:badarg -> {error, badarg}
+    end.
 
-set_cwd(Dir) ->
-    set_cwd_int({?DRV, [binary]}, Dir).
+-spec pwrite_list(FRef, LocBytes, Successes) -> Result when
+      FRef :: prim_file_ref(),
+      LocBytes :: list({Offset :: non_neg_integer(),
+                        IOData :: iodata()}),
+      Successes :: non_neg_integer(),
+      Result :: ok | {error, {Successes, Reason :: atom()}}.
+pwrite_list(_FRef, [], _Successes) ->
+    ok;
+pwrite_list(FRef, [{Offset, IOData} | Rest], Successes) ->
+    case pwrite_plain(FRef, Offset, erlang:iolist_to_iovec(IOData)) of
+        {error, Reason} -> {error, {Successes, Reason}};
+        ok -> pwrite_list(FRef, Rest, Successes + 1)
+    end.
 
-set_cwd(Port, Dir) when is_port(Port) ->
-    set_cwd_int(Port, Dir).
+sendfile(Fd, Socket, Offset, Bytes, _ChunkSize, [], [], _Flags) ->
+    %% There's a very nasty race in here; if we die just prior to duplicating
+    %% the handle down in the sendfile call, it might get reused by something
+    %% entirely different and we'll leak unknown data to the socket until it
+    %% dies soon after.
+    %%
+    %% This bug was inherited from the old driver, except it was vulnerable to
+    %% the bug at any point and not just during setup.
+    %%
+    %% We'll have to live with this until we have a way to unambiguously
+    %% transfer things between drivers or NIFs. Current ideas all fall afoul
+    %% of the Two Generals problem.
+    try
+        advise(Fd, Offset, Bytes, sequential),
+        prim_inet:sendfile(Socket, get_handle(Fd), Offset, Bytes)
+    catch
+        error:badarg -> {error, badarg}
+    end;
+sendfile(_Fd, _Socket, _Offset, _Bytes, _ChunkSize, _Headers, _Trailers, _Flags) ->
+    {error, enotsup}.
 
-set_cwd_int(Port, Dir) when is_binary(Dir) ->
-    case prim_file:is_translatable(Dir) of
-	false ->
-	    {error, no_translation};
-	true ->
-	    drv_command(Port, [?FILE_CHDIR, pathname(Dir)])
+%% Undocumented internal function that reads a data block with indirection.
+%%
+%% This is only used once in DETS and can easily be emulated with pread/2, but
+%% it's pretty performance-sensitive so we've implemented it down in the NIF to
+%% avoid excessive rescheduling.
+-spec ipread_s32bu_p32bu(Fd, Offset, MaxSize) -> Result when
+      Fd :: #file_descriptor{},
+      Offset :: non_neg_integer(),
+      MaxSize :: non_neg_integer() | infinity,
+      Result :: {ok, Size :: non_neg_integer(),
+                     Pointer :: non_neg_integer(),
+                     Data :: iodata() | eof} |
+                eof |
+                {error, Reason :: atom()}.
+ipread_s32bu_p32bu(Fd, Offset, Infinity) when is_atom(Infinity) ->
+    ipread_s32bu_p32bu(Fd, Offset, (1 bsl 31) - 1);
+ipread_s32bu_p32bu(Fd, Offset, MaxSize)
+        when is_integer(Offset), is_integer(MaxSize) ->
+    try
+        #{ handle := FRef } = get_fd_data(Fd),
+        ipread_s32bu_p32bu_nif(FRef, Offset, MaxSize)
+    catch
+        error:badarg -> {error, badarg}
     end;
-set_cwd_int(Port, Dir) when is_list(Dir) ->
-    drv_command(Port, [?FILE_CHDIR, pathname(Dir)]);
-set_cwd_int(_, _) ->
+ipread_s32bu_p32bu(_Fd, _Offset, _MaxSize) ->
     {error, badarg}.
-
-
-
-%% delete/{1,2}
-
-delete(File) ->
-    delete_int({?DRV, [binary]}, File).
-
-delete(Port, File) when is_port(Port) ->
-    delete_int(Port, File).
-
-delete_int(Port, File) ->
-    drv_command(Port, [?FILE_DELETE, pathname(File)]).
-
-
-
-%% rename/{2,3}
-
-rename(From, To) ->
-    rename_int({?DRV, [binary]}, From, To).
-
-rename(Port, From, To) when is_port(Port) ->
-    rename_int(Port, From, To).
-
-rename_int(Port, From, To) ->
-    drv_command(Port, [?FILE_RENAME, pathname(From), pathname(To)]).
-
-
-
-%% make_dir/{1,2}
-
-make_dir(Dir) ->
-    make_dir_int({?DRV, [binary]}, Dir).
-
-make_dir(Port, Dir) when is_port(Port) ->
-    make_dir_int(Port, Dir).
-
-make_dir_int(Port, Dir) ->
-    drv_command(Port, [?FILE_MKDIR, pathname(Dir)]).
-
-
-
-%% del_dir/{1,2}
-
-del_dir(Dir) ->
-    del_dir_int({?DRV, [binary]}, Dir).
-
-del_dir(Port, Dir) when is_port(Port) ->
-    del_dir_int(Port, Dir).
-
-del_dir_int(Port, Dir) ->
-    drv_command(Port, [?FILE_RMDIR, pathname(Dir)]).
-
-
-
-%% read_file_info/{1,2,3}
-
-read_file_info(File) ->
-    read_file_info_int({?DRV, [binary]}, File, local).
-
-read_file_info(Port, File) when is_port(Port) ->
-    read_file_info_int(Port, File, local);
-read_file_info(File, Opts) ->
-    read_file_info_int({?DRV, [binary]}, File, plgv(time, Opts, local)).
-
-read_file_info(Port, File, Opts) when is_port(Port) ->
-    read_file_info_int(Port, File, plgv(time, Opts, local)).
-
-read_file_info_int(Port, File, TimeType) ->
+ipread_s32bu_p32bu_nif(_FRef, _Offset, _MaxSize) ->
+    erlang:nif_error(undef).
+
+%% Returns the binary representation of the underlying handle, for use in
+%% tricky operations like sendfile/8.
+-spec get_handle(Fd) -> Result when
+      Fd :: #file_descriptor{},
+      Result :: binary() | {error, Reason :: atom()}.
+get_handle(Fd) ->
     try
-	case drv_command(Port, [?FILE_FSTAT, pathname(File)]) of
-	    {ok, FI} -> {ok, FI#file_info{
-			ctime = from_seconds(FI#file_info.ctime, TimeType),
-			mtime = from_seconds(FI#file_info.mtime, TimeType),
-			atime = from_seconds(FI#file_info.atime, TimeType)
-		    }};
-	    Error    -> Error
-	end
+        #{ handle := FRef } = get_fd_data(Fd),
+        get_handle_nif(FRef)
     catch
-	error:_ -> {error, badarg}
+        error:badarg -> {error, badarg}
     end.
 
+%% Resets the write head to the position the user believes we're at, which may
+%% not be the same as the real one when read caching is in effect.
+reset_write_position(Fd) ->
+    #{ r_buffer := RBuf } = Fd#file_descriptor.data,
+    case prim_buffer:size(RBuf) of
+        Size when Size > 0 -> position(Fd, cur);
+        Size when Size =:= 0 -> ok
+    end.
 
-%% altname/{1,2}
-
-altname(File) ->
-    altname_int({?DRV, [binary]}, File).
-
-altname(Port, File) when is_port(Port) ->
-    altname_int(Port, File).
-
-altname_int(Port, File) ->
-    drv_command(Port, [?FILE_ALTNAME, pathname(File)],
-		fun handle_fname_response/1).
-
-%% write_file_info/{2,3,4}
-
-write_file_info(File, Info) ->
-    write_file_info_int({?DRV, [binary]}, File, Info, local).
-
-write_file_info(Port, File, Info) when is_port(Port) ->
-    write_file_info_int(Port, File, Info, local);
-write_file_info(File, Info, Opts) ->
-    write_file_info_int({?DRV, [binary]}, File, Info, plgv(time, Opts, local)).
-
-write_file_info(Port, File, Info, Opts) when is_port(Port) ->
-    write_file_info_int(Port, File, Info, plgv(time, Opts, local)).
+get_fd_data(#file_descriptor{ data = Data }) ->
+    #{ owner := Owner } = Data,
+    case self() of
+        Owner -> Data;
+        _ -> error(not_on_controlling_process)
+    end.
 
-write_file_info_int(Port, File, 
-		    #file_info{mode=Mode, 
-			       uid=Uid, 
-			       gid=Gid,
-			       atime=Atime0, 
-			       mtime=Mtime0, 
-			       ctime=Ctime0},
-		       TimeType) ->
+build_fd_data(FRef, Modes) ->
+    Defaults =
+        #{ owner => self(),
+           handle => FRef,
+           r_ahead_size => 0,
+           r_buffer => prim_buffer:new() },
+    fill_fd_option_map(Modes, Defaults).
+
+fill_fd_option_map([], Map) ->
+    Map;
+
+fill_fd_option_map([read_ahead | Modes], Map) ->
+    fill_fd_option_map([{read_ahead, 64 bsl 10} | Modes], Map);
+fill_fd_option_map([{read_ahead, Size} | Modes], Map) ->
+    fill_fd_option_map(Modes, Map#{ r_ahead_size => Size });
+
+fill_fd_option_map([_Ignored | Modes], Map) ->
+    fill_fd_option_map(Modes, Map).
+
+open_nif(_Name, _Modes) ->
+    erlang:nif_error(undef).
+close_nif(_FileRef) ->
+    erlang:nif_error(undef).
+read_nif(_FileRef, _Size) ->
+    erlang:nif_error(undef).
+write_nif(_FileRef, _IOVec) ->
+    erlang:nif_error(undef).
+pread_nif(_FileRef, _Offset, _Size) ->
+    erlang:nif_error(undef).
+pwrite_nif(_FileRef, _Offset, _IOVec) ->
+    erlang:nif_error(undef).
+seek_nif(_FileRef, _Mark, _Offset) ->
+    erlang:nif_error(undef).
+sync_nif(_FileRef, _DataOnly) ->
+    erlang:nif_error(undef).
+advise_nif(_FileRef, _Offset, _Length, _Advise) ->
+    erlang:nif_error(undef).
+allocate_nif(_FileRef, _Offset, _Length) ->
+    erlang:nif_error(undef).
+truncate_nif(_FileRef) ->
+    erlang:nif_error(undef).
+get_handle_nif(_FileRef) ->
+    erlang:nif_error(undef).
 
-    % Atime and/or Mtime might be undefined
-    %  - use localtime() for atime, if atime is undefined
-    %  - use atime as mtime if mtime is undefined
-    %  - use mtime as ctime if ctime is undefined
+%%
+%% Quality-of-life helpers
+%%
 
+read_file(Filename) ->
+    %% We're doing this operation in the NIF to avoid excessive rescheduling.
     try
-	Atime = file_info_validate_atime(Atime0, TimeType),
-	Mtime = file_info_validate_mtime(Mtime0, Atime),
-	Ctime = file_info_validate_ctime(Ctime0, Mtime),
-
-	drv_command(Port, [?FILE_WRITE_INFO, 
-		int_to_int32bytes(Mode), 
-		int_to_int32bytes(Uid), 
-		int_to_int32bytes(Gid),
-		int_to_int64bytes(to_seconds(Atime, TimeType)), 
-		int_to_int64bytes(to_seconds(Mtime, TimeType)), 
-		int_to_int64bytes(to_seconds(Ctime, TimeType)),
-		pathname(File)])
+        read_file_nif(encode_path(Filename))
     catch
-	error:_ -> {error, badarg}
+        error:badarg -> {error, badarg}
+    end.
+read_file_nif(_Filename) ->
+    erlang:nif_error(undef).
+
+write_file(Filename, Bytes) ->
+    write_file(Filename, Bytes, []).
+write_file(Filename, Bytes, Modes) ->
+    case open(Filename, [write, binary | Modes]) of
+        {ok, Fd} ->
+            Result = write(Fd, Bytes),
+            close(Fd),
+            Result;
+        {error, Reason} ->
+            {error, Reason}
     end.
 
+%%
+%% Filesystem operations
+%%
 
-file_info_validate_atime(Atime, _) when Atime =/= undefined -> Atime;
-file_info_validate_atime(undefined, local)     -> erlang:localtime();
-file_info_validate_atime(undefined, universal) -> erlang:universaltime();
-file_info_validate_atime(undefined, posix)     -> erlang:universaltime_to_posixtime(erlang:universaltime()).
-
-file_info_validate_mtime(undefined, Atime) -> Atime;
-file_info_validate_mtime(Mtime, _)         -> Mtime.
-
-file_info_validate_ctime(undefined, Mtime) -> Mtime;
-file_info_validate_ctime(Ctime, _)         -> Ctime.
-
-%% make_link/{2,3}
-
-make_link(Old, New) ->
-    make_link_int({?DRV, [binary]}, Old, New).
-
-make_link(Port, Old, New) when is_port(Port) ->
-    make_link_int(Port, Old, New).
-
-make_link_int(Port, Old, New) ->
-    drv_command(Port, [?FILE_LINK, pathname(Old), pathname(New)]).
-
-
-
-%% make_symlink/{2,3}
-
-make_symlink(Old, New) ->
-    make_symlink_int({?DRV, [binary]}, Old, New).
-
-make_symlink(Port, Old, New) when is_port(Port) ->
-    make_symlink_int(Port, Old, New).
-
-make_symlink_int(Port, Old, New) ->
-    drv_command(Port, [?FILE_SYMLINK, pathname(Old), pathname(New)]).
-
-
-
-%% read_link/{2,3}
-
-read_link(Link) ->
-    read_link_int({?DRV, [binary]}, Link).
-
-read_link(Port, Link) when is_port(Port) ->
-    read_link_int(Port, Link).
-
-read_link_int(Port, Link) ->
-    drv_command(Port, [?FILE_READLINK, pathname(Link)],
-		fun handle_fname_response/1).
-
-%% read_link_all/{2,3}
-
-read_link_all(Link) ->
-    read_link_all_int({?DRV, [binary]}, Link).
-
-read_link_all(Port, Link) when is_port(Port) ->
-    read_link_all_int(Port, Link).
-
-read_link_all_int(Port, Link) ->
-    drv_command(Port, [?FILE_READLINK, pathname(Link)],
-		fun handle_fname_response_all/1).
-
-
-
-%% read_link_info/{2,3}
-
-read_link_info(Link) ->
-    read_link_info_int({?DRV, [binary]}, Link, local).
-
-read_link_info(Port, Link) when is_port(Port) ->
-    read_link_info_int(Port, Link, local);
+read_link(Name) -> read_link_1(Name, false).
+read_link_all(Name) -> read_link_1(Name, true).
 
-read_link_info(Link, Opts) ->
-    read_link_info_int({?DRV, [binary]}, Link, plgv(time, Opts, local)).
+read_link_1(Name, AcceptRawNames) ->
+    try read_link_nif(encode_path(Name)) of
+        {ok, RawName} -> translate_raw_name(RawName, AcceptRawNames);
+        {error, Reason} -> {error, Reason}
+    catch
+        error:badarg -> {error, badarg}
+    end.
 
-read_link_info(Port, Link, Opts) when is_port(Port) ->
-    read_link_info_int(Port, Link, plgv(time, Opts, local)).
+translate_raw_name(RawName, SilentFailure) ->
+    case decode_path(RawName) of
+        Converted when is_list(Converted) -> {ok, Converted};
+        {error, _Reason} when SilentFailure =:= false -> {error, einval};
+        {error, _Reason} when SilentFailure =:= true -> {ok, RawName}
+    end.
 
+list_dir(Name) -> list_dir_1(Name, true).
+list_dir_all(Name) -> list_dir_1(Name, false).
 
-read_link_info_int(Port, Link, TimeType) ->
-    try
-	case drv_command(Port, [?FILE_LSTAT, pathname(Link)]) of
-	    {ok, FI} -> {ok, FI#file_info{
-			ctime = from_seconds(FI#file_info.ctime, TimeType),
-			mtime = from_seconds(FI#file_info.mtime, TimeType),
-			atime = from_seconds(FI#file_info.atime, TimeType)
-		    }};
-	    Error    -> Error
-	end
+list_dir_1(Name, SkipInvalid) ->
+    try list_dir_nif(encode_path(Name)) of
+        {ok, RawNames} -> list_dir_convert(RawNames, SkipInvalid, []);
+        {error, Reason} -> {error, Reason}
     catch
-	error:_ -> {error, badarg}
+        error:badarg -> {error, badarg}
     end.
 
-%% list_dir/{1,2}
-
-list_dir(Dir) ->
-    list_dir_int({?DRV, [binary]}, Dir).
-
-list_dir(Port, Dir) when is_port(Port) ->
-    list_dir_int(Port, Dir).
-
-list_dir_int(Port, Dir) ->
-    drv_command(Port, [?FILE_READDIR, pathname(Dir)],
-		fun(P) ->
-			case list_dir_response(P, []) of
-			    {ok, RawNames} ->
-				try
-				    {ok, list_dir_convert(RawNames)}
-				catch
-				    throw:Reason ->
-					Reason
-				end;
-			    Error ->
-				Error
-			end
-		end).
-
-list_dir_all(Dir) ->
-    list_dir_all_int({?DRV, [binary]}, Dir).
-
-list_dir_all(Port, Dir) when is_port(Port) ->
-    list_dir_all_int(Port, Dir).
-
-list_dir_all_int(Port, Dir) ->
-    drv_command(Port, [?FILE_READDIR, pathname(Dir)],
-		fun(P) ->
-			case list_dir_response(P, []) of
-			    {ok, RawNames} ->
-				{ok, list_dir_convert_all(RawNames)};
-			    Error ->
-				Error
-			end
-		end).
-
-list_dir_response(Port, Acc0) ->
-    case drv_get_response(Port) of
-	{lfname, []} ->
-	    {ok, Acc0};
-	{lfname, Names} ->
-	    Acc = [Name || <<L:16,Name:L/binary>> <= Names] ++ Acc0,
-	    list_dir_response(Port, Acc);
-	Error ->
-	    Error
+list_dir_convert([], _SkipInvalid, Result) ->
+    {ok, Result};
+list_dir_convert([RawName | Rest], SkipInvalid, Result) ->
+    case decode_path(RawName) of
+        Converted when is_list(Converted) ->
+            list_dir_convert(Rest, SkipInvalid, [Converted | Result]);
+        {error, _} when SkipInvalid =:= false ->
+            list_dir_convert(Rest, SkipInvalid, [RawName | Result]);
+
+        %% If the filename cannot be converted, return error or ignore with
+        %% optional error logger warning depending on +fn{u|a}{i|e|w} emulator
+        %% switches.
+        {error, ignore} ->
+            list_dir_convert(Rest, SkipInvalid, Result);
+        {error, warning} ->
+            error_logger:warning_msg(
+                "Non-unicode filename ~p ignored\n", [RawName]),
+            list_dir_convert(Rest, SkipInvalid, Result);
+        {error, _} ->
+            {error, {no_translation, RawName}}
     end.
 
-list_dir_convert([Name|Names]) ->
-    %% If the filename cannot be converted, return error or ignore
-    %% with optional error logger warning, depending on +fn{u|a}{i|e|w}
-    %% emulator switches.
-    case prim_file:internal_native2name(Name) of
-	{error, warning} ->
-	    error_logger:warning_msg("Non-unicode filename ~p ignored\n",
-				     [Name]),
-	    list_dir_convert(Names);
-	{error, ignore} ->
-	    list_dir_convert(Names);
-	{error, error} ->
-	    throw({error, {no_translation, Name}});
-	Converted when is_list(Converted) ->
-	    [Converted|list_dir_convert(Names)]
-    end;
-list_dir_convert([]) -> [].
-
-list_dir_convert_all([Name|Names]) ->
-    %% If the filename cannot be converted, retain the filename as
-    %% a binary.
-    case prim_file:internal_native2name(Name) of
-	{error, _} ->
-	    [Name|list_dir_convert_all(Names)];
-	Converted when is_list(Converted) ->
-	    [Converted|list_dir_convert_all(Names)]
-    end;
-list_dir_convert_all([]) -> [].
-
-%%%-----------------------------------------------------------------
-%%% Functions to communicate with the driver
-
-handle_fname_response(Port) ->
-    case drv_get_response(Port) of
-	{fname, Name} ->
-	    case prim_file:internal_native2name(Name) of
-		{error, warning} ->
-		    error_logger:warning_msg("Non-unicode filename ~p "
-					     "ignored when reading link\n",
-					     [Name]),
-		    {error, einval};
-		{error, _} ->
-		    {error, einval};
-		Converted when is_list(Converted) ->
-		    {ok, Converted}
-	    end;
-	Error ->
-	    Error
+read_file_info(Filename) ->
+    read_info_1(Filename, 1, local).
+read_file_info(Filename, Opts) ->
+    read_info_1(Filename, 1, proplist_get_value(time, Opts, local)).
+
+read_link_info(Name) ->
+    read_info_1(Name, 0, local).
+read_link_info(Name, Opts) ->
+    read_info_1(Name, 0, proplist_get_value(time, Opts, local)).
+
+read_info_1(Name, FollowLinks, TimeType) ->
+    try read_info_nif(encode_path(Name), FollowLinks) of
+        {error, Reason} -> {error, Reason};
+        FileInfo ->
+            CTime = from_posix_seconds(FileInfo#file_info.ctime, TimeType),
+            MTime = from_posix_seconds(FileInfo#file_info.mtime, TimeType),
+            ATime = from_posix_seconds(FileInfo#file_info.atime, TimeType),
+            {ok, FileInfo#file_info{ ctime = CTime, mtime = MTime, atime = ATime }}
+    catch
+        error:badarg -> {error, badarg}
     end.
 
-handle_fname_response_all(Port) ->
-    case drv_get_response(Port) of
-	{fname, Name} ->
-	    case prim_file:internal_native2name(Name) of
-		{error, _} ->
-		    {ok, Name};
-		Converted when is_list(Converted) ->
-		    {ok, Converted}
-	    end;
-	Error ->
-	    Error
+write_file_info(Filename, Info) ->
+    write_file_info_1(Filename, Info, local).
+write_file_info(Filename, Info, Opts) ->
+    write_file_info_1(Filename, Info, proplist_get_value(time, Opts, local)).
+
+write_file_info_1(Filename, Info, TimeType) ->
+    #file_info{ mode = Modes,
+                uid = Uid,
+                gid = Gid,
+                atime = ATime0,
+                mtime = MTime0,
+                ctime = CTime0} = Info,
+    try
+        % ATime and/or MTime might be undefined
+        %  - use localtime() for atime, if atime is undefined
+        %  - use atime as mtime if mtime is undefined
+        %  - use mtime as ctime if ctime is undefined
+        ATime = file_info_convert_atime(ATime0, TimeType),
+        MTime = file_info_convert_mtime(MTime0, ATime, TimeType),
+        CTime = file_info_convert_ctime(CTime0, MTime, TimeType),
+        EncodedName = encode_path(Filename),
+
+        %% This is a bit ugly but we need to handle partial failures the same
+        %% way the old driver did.
+        throw_on_error(set_owner(EncodedName, Uid, Gid)),
+        throw_on_error(set_permissions(EncodedName, Modes)),
+        throw_on_error(set_time(EncodedName, ATime, MTime, CTime))
+    catch
+        throw:Reason -> {error, Reason};
+        error:_ -> {error, badarg}
     end.
 
-%% Opens a driver port and converts any problems into {error, emfile}.
-%% Returns {ok, Port} when successful.
+set_owner(_EncodedName, undefined, undefined) ->
+    ok;
+set_owner(EncodedName, Uid, Gid) ->
+    set_owner_nif(EncodedName, Uid, Gid).
+set_owner_nif(_Path, _Uid, _Gid) ->
+    erlang:nif_error(undef).
 
-drv_open(Driver, Portopts) ->
-    try erlang:open_port({spawn_driver, Driver}, Portopts) of
-	Port ->
-	    {ok, Port}
+set_permissions(_EncodedName, undefined) ->
+    ok;
+set_permissions(EncodedName, Permissions) ->
+    set_permissions_nif(EncodedName, Permissions).
+set_permissions_nif(_Path, _Permissions) ->
+    erlang:nif_error(undef).
+
+set_time(EncodedName, ATime, MTime, CTime) ->
+    set_time_nif(EncodedName, ATime, MTime, CTime).
+set_time_nif(_Path, _ATime, _MTime, _CTime) ->
+    erlang:nif_error(undef).
+
+throw_on_error(ok) -> ok;
+throw_on_error({error, enotsup}) -> ok;
+throw_on_error({error, Reason}) -> throw(Reason).
+
+file_info_convert_atime(ATime, TimeType) when ATime =/= undefined ->
+    to_posix_seconds(ATime, TimeType);
+file_info_convert_atime(undefined, local) ->
+    to_posix_seconds(erlang:localtime(), local);
+file_info_convert_atime(undefined, universal) ->
+    to_posix_seconds(erlang:universaltime(), universal);
+file_info_convert_atime(undefined, posix) ->
+    erlang:universaltime_to_posixtime(erlang:universaltime()).
+
+file_info_convert_mtime(undefined, ATime, _TimeType) ->
+    ATime;
+file_info_convert_mtime(MTime, _ATime, TimeType) ->
+    to_posix_seconds(MTime, TimeType).
+
+file_info_convert_ctime(undefined, MTime, _TimeType) ->
+    MTime;
+file_info_convert_ctime(CTime, _MTime, TimeType) ->
+    to_posix_seconds(CTime, TimeType).
+
+%% This is only relevant on Windows, so we assume that format to simplify the
+%% internals.
+get_cwd([Letter, $:]) when Letter >= $A, Letter =< $Z ->
+    get_dcwd(Letter - $A + 1);
+get_cwd([Letter, $:]) when Letter >= $a, Letter =< $z ->
+    get_dcwd(Letter - $a + 1);
+get_cwd([_|_]) ->
+    {error, einval};
+get_cwd(_) ->
+    {error, badarg}.
+get_dcwd(Index) ->
+    try get_device_cwd_nif(Index) of
+        {ok, RawPath} -> {ok, decode_path(RawPath)};
+        {error, Reason} -> {error, Reason}
     catch
-	error:Reason ->
-	    {error, Reason}
+        error:badarg -> {error, badarg}
     end.
 
-
-
-%% Closes a port in a safe way. Returns ok.
-
-drv_close(Port) ->
-    Save = erlang:dt_spread_tag(false),
+get_cwd() ->
+    try get_cwd_nif() of
+        {ok, RawPath} -> {ok, decode_path(RawPath)};
+        {error, Reason} -> {error, Reason}
+    catch
+        error:badarg -> {error, badarg}
+    end.
+set_cwd(Path) ->
     try
-	try erlang:port_close(Port) catch error:_ -> ok end,
-	receive %% Ugly workaround in case the caller==owner traps exits
-	    {'EXIT', Port, _Reason} -> 
-		ok
-	after 0 -> 
-		ok
-	end
-    after
-	erlang:dt_restore_tag(Save)
+        case is_path_translatable(Path) of
+            true -> set_cwd_nif(encode_path(Path));
+            false -> {error, no_translation}
+        end
+    catch
+        error:badarg -> {error, badarg}
     end.
 
-
-
-%% Issues a command to a port and gets the response.
-%% If Port is {Driver, Portopts} a port is first opened and 
-%% then closed after the result has been received.
-%% Returns {ok, Result} or {error, Reason}.
-
-drv_command(Port, Command) ->
-    drv_command(Port, Command, undefined).
-
-drv_command(Port, Command, R) when is_binary(Command) ->
-    drv_command(Port, Command, true, R);
-drv_command(Port, Command, R) ->
-    try erlang:iolist_size(Command) of
-	_ ->
-	    drv_command(Port, Command, true, R)
+delete(Path) ->
+    try
+        del_file_nif(encode_path(Path))
     catch
-	error:Reason ->
-	    {error, Reason}
+        error:badarg -> {error, badarg}
     end.
 
-drv_command(Port, Command, Validated, R) when is_port(Port) ->
-    Save = erlang:dt_spread_tag(false),
-    try erlang:port_command(Port, erlang:dt_append_vm_tag_data(Command)) of
-	true ->
-	    drv_get_response(Port, R)
+rename(Source, Destination) ->
+    try
+        rename_nif(encode_path(Source), encode_path(Destination))
     catch
-	%% If the Command is valid, knowing that the port is a port,
-	%% a badarg error must mean it is a dead port, that is:
-	%% a currently invalid filehandle, -> einval, not badarg.
-	error:badarg when Validated ->
-	    {error, einval};
-	error:badarg ->
-	    try erlang:iolist_size(Command) of
-		_ -> % Valid
-		    {error, einval}
-	    catch
-		error:_ ->
-		    {error, badarg}
-	    end;
-	error:Reason ->
-	    {error, Reason}
-    after
-	erlang:dt_restore_tag(Save)
-    end;
-drv_command({Driver, Portopts}, Command, Validated, R) ->
-    case drv_open(Driver, Portopts) of
-	{ok, Port} ->
-	    Result = drv_command(Port, Command, Validated, R),
-	    drv_close(Port),
-	    Result;
-	Error ->
-	    Error
+        error:badarg -> {error, badarg}
     end.
-drv_command_nt(Port, Command, R) when is_port(Port) ->
-    Save = erlang:dt_spread_tag(false),
-    try erlang:port_command(Port, Command) of
-	true ->
-	    drv_get_response(Port, R)
+make_dir(Path) ->
+    try
+        make_dir_nif(encode_path(Path))
     catch
-	error:badarg ->
-	    try erlang:iolist_size(Command) of
-		_ -> % Valid
-		    {error, einval}
-	    catch
-		error:_ ->
-		    {error, badarg}
-	    end;
-	error:Reason ->
-	    {error, Reason}
-    after
-	erlang:dt_restore_tag(Save)
+        error:badarg -> {error, badarg}
     end.
-
-
-    
-%% Receives the response from a driver port.
-%% Returns: {ok, ListOrBinary}|{error, Reason}
-
-drv_get_response(Port, undefined) ->
-    drv_get_response(Port);
-drv_get_response(Port, Fun) when is_function(Fun, 1) ->
-    Fun(Port).
-
-drv_get_response(Port) ->
-    erlang:bump_reductions(100),
-    receive
-	{Port, {data, [Response|Rest] = Data}} ->
-	    try translate_response(Response, Rest)
-	    catch
-		error:Reason ->
-		    {error, {bad_response_from_port, Data, 
-			     {Reason, erlang:get_stacktrace()}}}
-	    end;
-	{'EXIT', Port, Reason} ->
-	    {error, {port_died, Reason}}
+del_dir(Path) ->
+    try
+        del_dir_nif(encode_path(Path))
+    catch
+        error:badarg -> {error, badarg}
     end.
-
-
-%%%-----------------------------------------------------------------
-%%% Utility functions.
-
-%% Converts a list of mode atoms into a mode word for the driver.
-%% Returns {Mode, Portopts, Setopts} where Portopts is a list of 
-%% options for erlang:open_port/2 and Setopts is a list of 
-%% setopt commands to send to the port, or error Reason upon failure.
-
-open_mode(List) when is_list(List) ->
-    case open_mode(List, 0, [], []) of
-	{Mode, Portopts, Setopts} when Mode band 
-			  (?EFILE_MODE_READ bor ?EFILE_MODE_WRITE) 
-			  =:= 0 ->
-	    {Mode bor ?EFILE_MODE_READ, Portopts, Setopts};
-	Other ->
-	    Other
+make_link(Existing, New) ->
+    try
+        make_hard_link_nif(encode_path(Existing), encode_path(New))
+    catch
+        error:badarg -> {error, badarg}
     end.
-
-open_mode([raw|Rest], Mode, Portopts, Setopts) ->
-    open_mode(Rest, Mode, Portopts, Setopts);
-open_mode([read|Rest], Mode, Portopts, Setopts) ->
-    open_mode(Rest, Mode bor ?EFILE_MODE_READ, Portopts, Setopts);
-open_mode([write|Rest], Mode, Portopts, Setopts) ->
-    open_mode(Rest, Mode bor ?EFILE_MODE_WRITE, Portopts, Setopts);
-open_mode([binary|Rest], Mode, Portopts, Setopts) ->
-    open_mode(Rest, Mode, [binary | Portopts], Setopts);
-open_mode([compressed|Rest], Mode, Portopts, Setopts) ->
-    open_mode(Rest, Mode bor ?EFILE_COMPRESSED, Portopts, Setopts);
-open_mode([append|Rest], Mode, Portopts, Setopts) ->
-    open_mode(Rest, Mode bor ?EFILE_MODE_APPEND bor ?EFILE_MODE_WRITE, 
-	      Portopts, Setopts);
-open_mode([exclusive|Rest], Mode, Portopts, Setopts) ->
-    open_mode(Rest, Mode bor ?EFILE_MODE_EXCL, Portopts, Setopts);
-open_mode([sync|Rest], Mode, Portopts, Setopts) ->
-    open_mode(Rest, Mode bor ?EFILE_MODE_SYNC, Portopts, Setopts);
-open_mode([delayed_write|Rest], Mode, Portopts, Setopts) ->
-    open_mode([{delayed_write, 64*1024, 2000}|Rest], Mode,
-	      Portopts, Setopts);
-open_mode([{delayed_write, Size, Delay}|Rest], Mode, Portopts, Setopts) 
-  when is_integer(Size), 0 =< Size, is_integer(Delay), 0 =< Delay ->
-    if
-	Size < ?LARGEFILESIZE, Delay < 1 bsl 64 ->
-	    open_mode(Rest, Mode, Portopts, 
-		      [<<?FILE_SETOPT, ?FILE_OPT_DELAYED_WRITE,
-			Size:64, Delay:64>> 
-		       | Setopts]);
-	true ->
-	    einval
-    end;
-open_mode([read_ahead|Rest], Mode, Portopts, Setopts) ->
-    open_mode([{read_ahead, 64*1024}|Rest], Mode, Portopts, Setopts);
-open_mode([{read_ahead, Size}|Rest], Mode, Portopts, Setopts)
-  when is_integer(Size), 0 =< Size ->
-    if
-	Size < ?LARGEFILESIZE ->
-	    open_mode(Rest, Mode, Portopts,
-		      [<<?FILE_SETOPT, ?FILE_OPT_READ_AHEAD,
-			Size:64>> | Setopts]);
-	true ->
-	    einval
-    end;
-open_mode([], Mode, Portopts, Setopts) ->
-    {Mode, reverse(Portopts), reverse(Setopts)};
-open_mode(_, _Mode, _Portopts, _Setopts) ->
-    badarg.
-
-
-
-%% Converts a position tuple {bof, X} | {cur, X} | {eof, X} into
-%% {Offset, OriginCode} for the driver.
-%% Returns badarg upon failure.
-
-lseek_position(Pos)
-  when is_integer(Pos) ->
-    lseek_position({bof, Pos});
-lseek_position(bof) ->
-    lseek_position({bof, 0});
-lseek_position(cur) ->
-    lseek_position({cur, 0});
-lseek_position(eof) ->
-    lseek_position({eof, 0});
-lseek_position({bof, Offset})
-  when is_integer(Offset) ->
-    {Offset, ?EFILE_SEEK_SET};
-lseek_position({cur, Offset})
-  when is_integer(Offset) ->
-    {Offset, ?EFILE_SEEK_CUR};
-lseek_position({eof, Offset})
-  when is_integer(Offset) ->
-    {Offset, ?EFILE_SEEK_END};
-lseek_position(_) ->
-    badarg.
-
-
-
-%% Translates the response from the driver into 
-%% {ok, Result} or {error, Reason}.
-
--dialyzer({no_improper_lists, translate_response/2}).
-translate_response(?FILE_RESP_OK, []) ->
-    ok;
-translate_response(?FILE_RESP_ERROR, List) when is_list(List) ->
-    {error, list_to_atom(List)};
-translate_response(?FILE_RESP_NUMBER, List) ->
-    {N, []} = get_uint64(List),
-    {ok, N};
-translate_response(?FILE_RESP_DATA, List) ->
-    {_N, _Data} = ND = get_uint64(List),
-    {ok, ND};
-translate_response(?FILE_RESP_INFO, List) when is_list(List) ->
-    {ok, transform_info(List)};
-translate_response(?FILE_RESP_NUMERR, L0) ->
-    {N, L1} = get_uint64(L0),
-    {error, {N, list_to_atom(L1)}};
-translate_response(?FILE_RESP_LDATA, List) ->
-    {ok, transform_ldata(List)};
-translate_response(?FILE_RESP_N2DATA, 
-		   <<Offset:64, 0:64, Size:64>>) ->
-    {ok, {Size, Offset, eof}};
-translate_response(?FILE_RESP_N2DATA, 
-		   [<<Offset:64, 0:64, Size:64>> | <<>>]) ->
-    {ok, {Size, Offset, eof}};
-translate_response(?FILE_RESP_N2DATA = X, 
-		   [<<_:64, 0:64, _:64>> | _] = Data) ->
-    {error, {bad_response_from_port, [X | Data]}};
-translate_response(?FILE_RESP_N2DATA = X, 
-		   [<<_:64, _:64, _:64>> | <<>>] = Data) ->
-    {error, {bad_response_from_port, [X | Data]}};
-translate_response(?FILE_RESP_N2DATA, 
-		   [<<Offset:64, _ReadSize:64, Size:64>> | D]) ->
-    {ok, {Size, Offset, D}};
-translate_response(?FILE_RESP_N2DATA = X, L0) when is_list(L0) ->
-    {Offset, L1}    = get_uint64(L0),
-    {ReadSize, L2}  = get_uint64(L1),
-    {Size, L3}      = get_uint64(L2),
-    case {ReadSize, L3} of
-	{0, []} ->
-	    {ok, {Size, Offset, eof}};
-	{0, _} ->
-	    {error, {bad_response_from_port, [X | L0]}};
-	{_, []} ->
-	    {error, {bad_response_from_port, [X | L0]}};
-	_ ->
-	    {ok, {Size, Offset, L3}}
-    end;
-translate_response(?FILE_RESP_EOF, []) ->
-    eof;
-translate_response(?FILE_RESP_FNAME, Data) ->
-    {fname, Data};
-translate_response(?FILE_RESP_LFNAME, Data) ->
-    {lfname, Data};
-translate_response(?FILE_RESP_ALL_DATA, Data) ->
-    {ok, Data};
-translate_response(X, Data) ->
-    {error, {bad_response_from_port, [X | Data]}}.
-
-transform_info([
-    Hsize1, Hsize2, Hsize3, Hsize4, 
-    Lsize1, Lsize2, Lsize3, Lsize4,
-    Type1,  Type2,  Type3,  Type4,
-    Atime1, Atime2, Atime3, Atime4, Atime5, Atime6, Atime7, Atime8,
-    Mtime1, Mtime2, Mtime3, Mtime4, Mtime5, Mtime6, Mtime7, Mtime8,
-    Ctime1, Ctime2, Ctime3, Ctime4, Ctime5, Ctime6, Ctime7, Ctime8,
-    Mode1,  Mode2,  Mode3,  Mode4,
-    Links1, Links2, Links3, Links4,
-    Major1, Major2, Major3, Major4,
-    Minor1, Minor2, Minor3, Minor4,
-    Inode1, Inode2, Inode3, Inode4,
-    Uid1,   Uid2,   Uid3,   Uid4,
-    Gid1,   Gid2,   Gid3,   Gid4,
-    Access1,Access2,Access3,Access4]) ->
-    #file_info {
-		size   = uint32(Hsize1,Hsize2,Hsize3,Hsize4)*16#100000000 + uint32(Lsize1,Lsize2,Lsize3,Lsize4),
-		type   = file_type(uint32(Type1,Type2,Type3,Type4)),
-		access = file_access(uint32(Access1,Access2,Access3,Access4)),
-		atime  = sint64(Atime1, Atime2, Atime3, Atime4, Atime5, Atime6, Atime7, Atime8),
-		mtime  = sint64(Mtime1, Mtime2, Mtime3, Mtime4, Mtime5, Mtime6, Mtime7, Mtime8),
-		ctime  = sint64(Ctime1, Ctime2, Ctime3, Ctime4, Ctime5, Ctime6, Ctime7, Ctime8),
-		mode   = uint32(Mode1,Mode2,Mode3,Mode4),
-		links  = uint32(Links1,Links2,Links3,Links4),
-		major_device = uint32(Major1,Major2,Major3,Major4),
-		minor_device = uint32(Minor1,Minor2,Minor3,Minor4),
-		inode = uint32(Inode1,Inode2,Inode3,Inode4),
-		uid   = uint32(Uid1,Uid2,Uid3,Uid4),
-		gid   = uint32(Gid1,Gid2,Gid3,Gid4)
-	    }.
-    
-    
-file_type(1) -> device;
-file_type(2) -> directory;
-file_type(3) -> regular;
-file_type(4) -> symlink;
-file_type(_) -> other.
-
-file_access(0) -> none;   
-file_access(1) -> write;
-file_access(2) -> read;
-file_access(3) -> read_write.
-
-int_to_int32bytes(Int) when is_integer(Int) ->
-    <<Int:32>>;
-int_to_int32bytes(undefined) ->
-    <<-1:32>>.
-
-int_to_int64bytes(Int) when is_integer(Int) ->
-    <<Int:64/signed>>.
-
-
-sint64(I1,I2,I3,I4,I5,I6,I7,I8) when I1 > 127 ->
-    ((I1 bsl 56) bor (I2 bsl 48) bor (I3 bsl 40) bor (I4 bsl 32) bor
-	(I5 bsl 24) bor (I6 bsl 16) bor (I7 bsl  8) bor I8) - (1 bsl 64);
-sint64(I1,I2,I3,I4,I5,I6,I7,I8) ->
-    ((I1 bsl 56) bor (I2 bsl 48) bor (I3 bsl 40) bor (I4 bsl 32) bor
-	(I5 bsl 24) bor (I6 bsl 16) bor (I7 bsl  8) bor I8).
-
-
-uint32(X1,X2,X3,X4) ->
-    (X1 bsl 24) bor (X2 bsl 16) bor (X3 bsl 8) bor X4.
-
-get_uint64(L0) ->
-    {X1, L1} = get_uint32(L0),
-    {X2, L2} = get_uint32(L1),
-    {(X1 bsl 32) bor X2, L2}.
-
-get_uint32([X1,X2,X3,X4|List]) ->
-    {(((((X1 bsl 8) bor X2) bsl 8) bor X3) bsl 8) bor X4, List}.
-
-
-%% Binary mode
-transform_ldata(<<0:32, 0:32>>) ->
-    [];
-transform_ldata([<<0:32, N:32, Sizes/binary>> | Datas]) ->
-    transform_ldata(N, Sizes, Datas, []);
-%% List mode
-transform_ldata([_,_,_,_,_,_,_,_|_] = L0) ->
-    {0, L1} = get_uint32(L0),
-    {N, L2} = get_uint32(L1),
-    transform_ldata(N, L2, []).
-
-%% List mode
-transform_ldata(0, List, Sizes) ->
-    transform_ldata(0, List, reverse(Sizes), []);
-transform_ldata(N, L0, Sizes) ->
-    {Size, L1} = get_uint64(L0),
-    transform_ldata(N-1, L1, [Size | Sizes]).
-
-%% Binary mode
-transform_ldata(1, <<0:64>>, <<>>, R) ->
-    reverse(R, [eof]);
-transform_ldata(1, <<Size:64>>, Data, R) 
-  when byte_size(Data) =:= Size ->
-    reverse(R, [Data]);
-transform_ldata(N, <<0:64, Sizes/binary>>, [<<>> | Datas], R) ->
-    transform_ldata(N-1, Sizes, Datas, [eof | R]);
-transform_ldata(N, <<Size:64, Sizes/binary>>, [Data | Datas], R) 
-  when byte_size(Data) =:= Size ->
-    transform_ldata(N-1, Sizes, Datas, [Data | R]);
-%% List mode
-transform_ldata(0, [], [], R) ->
-    reverse(R);
-transform_ldata(0, List, [0 | Sizes], R) ->
-    transform_ldata(0, List, Sizes, [eof | R]);
-transform_ldata(0, List, [Size | Sizes], R) ->
-    {Front, Rear} = lists_split(List, Size),
-    transform_ldata(0, Rear, Sizes, [Front | R]).
-
-lists_split(List, 0) when is_list(List) ->
-    {[], List};
-lists_split(List, N) when is_list(List), is_integer(N), N < 0 ->
-    erlang:error(badarg, [List, N]);
-lists_split(List, N) when is_list(List), is_integer(N) ->
-    case lists_split(List, N, []) of
-	premature_end_of_list ->
-	    erlang:error(badarg, [List, N]);
-	Result ->
-	    Result
+make_symlink(Existing, New) ->
+    try
+        make_soft_link_nif(encode_path(Existing), encode_path(New))
+    catch
+        error:badarg -> {error, badarg}
     end.
 
-lists_split(List, 0, Rev) ->
-    {reverse(Rev), List};
-lists_split([], _, _) ->
-    premature_end_of_list;
-lists_split([Hd | Tl], N, Rev) ->
-    lists_split(Tl, N-1, [Hd | Rev]).
-
-%% We KNOW that lists:reverse/2 is a BIF.
-
-reverse(X) -> lists:reverse(X, []).
-reverse(L, T) -> lists:reverse(L, T).
+altname(Path) ->
+    try altname_nif(encode_path(Path)) of
+        {ok, RawPath} -> {ok, decode_path(RawPath)};
+        Other -> Other
+    catch
+        error:badarg -> {error, badarg}
+    end.
 
-% Will add zero termination too
-% The 'EXIT' tuple from a bad argument will eventually generate an error
-% in list_to_binary, which is caught and generates the {error,badarg} return
-pathname(File) ->
-    (catch prim_file:internal_name2native(File)).
+list_dir_nif(_Path) ->
+    erlang:nif_error(undef).
+read_link_nif(_Path) ->
+    erlang:nif_error(undef).
+read_info_nif(_Path, _FollowLinks) ->
+    erlang:nif_error(undef).
+make_hard_link_nif(_Existing, _New) ->
+    erlang:nif_error(undef).
+make_soft_link_nif(_Existing, _New) ->
+    erlang:nif_error(undef).
+rename_nif(_Source, _Destination) ->
+    erlang:nif_error(undef).
+make_dir_nif(_Path) ->
+    erlang:nif_error(undef).
+del_file_nif(_Path) ->
+    erlang:nif_error(undef).
+del_dir_nif(_Path) ->
+    erlang:nif_error(undef).
+get_device_cwd_nif(_DevicePath) ->
+    erlang:nif_error(undef).
+set_cwd_nif(_Path) ->
+    erlang:nif_error(undef).
+get_cwd_nif() ->
+    erlang:nif_error(undef).
+altname_nif(_Path) ->
+    erlang:nif_error(undef).
 
+%%
+%% General helper functions.
+%%
 
-%% proplist:get_value/3
-plgv(K, [{K, V}|_], _) -> V;
-plgv(K, [_|KVs], D)    -> plgv(K, KVs, D);
-plgv(_, [], D)         -> D.
+%% We know for certain that lists:reverse/2 is a BIF, so it's safe to use it
+%% even though this module is preloaded.
+reverse_list(List) -> lists:reverse(List).
+
+proplist_get_value(_Key, [], Default) ->
+    Default;
+proplist_get_value(Key, [{Key, Value} | _Rest], _Default) ->
+    Value;
+proplist_get_value(Key, [Key | _Rest], _Default) ->
+    true;
+proplist_get_value(Key, [_Other | Rest], Default) ->
+    proplist_get_value(Key, Rest, Default).
+
+encode_path(Path) ->
+    prim_file:internal_name2native(Path).
+decode_path(NativePath) when is_binary(NativePath) ->
+    prim_file:internal_native2name(NativePath).
+
+is_path_translatable(Path) when is_list(Path) ->
+    true;
+is_path_translatable(Path) ->
+    prim_file:is_translatable(Path).
 
-%%
 %% We don't actually want this here
+%%
 %% We want to use posix time in all prim but erl_prim_loader makes that tricky
 %% It is probably needed to redo the whole erl_prim_loader
 
-from_seconds(Seconds, posix) when is_integer(Seconds) ->
+from_posix_seconds(Seconds, posix) when is_integer(Seconds) ->
     Seconds;
-from_seconds(Seconds, universal) when is_integer(Seconds) ->
+from_posix_seconds(Seconds, universal) when is_integer(Seconds) ->
     erlang:posixtime_to_universaltime(Seconds);
-from_seconds(Seconds, local) when is_integer(Seconds) ->
+from_posix_seconds(Seconds, local) when is_integer(Seconds) ->
     erlang:universaltime_to_localtime(erlang:posixtime_to_universaltime(Seconds)).
 
-to_seconds(Seconds, posix) when is_integer(Seconds) ->
+to_posix_seconds(Seconds, posix) when is_integer(Seconds) ->
     Seconds;
-to_seconds({_,_} = Datetime, universal) ->
+to_posix_seconds({_,_} = Datetime, universal) ->
     erlang:universaltime_to_posixtime(Datetime);
-to_seconds({_,_} = Datetime, local) ->
+to_posix_seconds({_,_} = Datetime, local) ->
     erlang:universaltime_to_posixtime(erlang:localtime_to_universaltime(Datetime)).
diff --git a/erts/preloaded/src/prim_inet.erl b/erts/preloaded/src/prim_inet.erl
index 017a706a8b..2a3605260d 100644
--- a/erts/preloaded/src/prim_inet.erl
+++ b/erts/preloaded/src/prim_inet.erl
@@ -31,7 +31,7 @@
 -export([connect/3, connect/4, async_connect/4]).
 -export([accept/1, accept/2, async_accept/2]).
 -export([shutdown/2]).
--export([send/2, send/3, sendto/4, sendmsg/3]).
+-export([send/2, send/3, sendto/4, sendmsg/3, sendfile/4]).
 -export([recv/2, recv/3, async_recv/3]).
 -export([unrecv/2]).
 -export([recvfrom/2, recvfrom/3]).
@@ -500,6 +500,55 @@ sendmsg(S, #sctp_sndrcvinfo{}=SRI, Data) when is_port(S) ->
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%
+%% SENDFILE(outsock(), Fd, Offset, Length) -> {ok,BytesSent} | {error, Reason}
+%%
+%% send Length data bytes from a file handle, to a socket, starting at Offset
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% "sendfile" is for TCP:
+
+sendfile(S, FileHandle, Offset, Length)
+        when not is_port(S);
+             not is_binary(FileHandle);
+             not is_integer(Offset);
+             not is_integer(Length) ->
+    {error, badarg};
+sendfile(S, FileHandle, Offset, Length) ->
+    case erlang:port_info(S, connected) of
+        {connected, Pid} when Pid =:= self() ->
+            sendfile_1(S, FileHandle, Offset, Length);
+        {connected, Pid} when Pid =/= self() ->
+            {error, not_owner};
+        _Other ->
+            {error, einval}
+    end.
+
+sendfile_1(S, FileHandle, Offset, 0) ->
+    sendfile_1(S, FileHandle, Offset, (1 bsl 63) - 1);
+sendfile_1(_S, _FileHandle, Offset, Length) when
+         Offset < 0; Offset > ((1 bsl 63) - 1);
+         Length < 0; Length > ((1 bsl 63) - 1) ->
+    {error, einval};
+sendfile_1(S, FileHandle, Offset, Length) ->
+    Args = [FileHandle,
+            ?int64(Offset),
+            ?int64(Length)],
+    case ctl_cmd(S, ?TCP_REQ_SENDFILE, Args) of
+        {ok, []} ->
+            receive
+                {sendfile, S, {ok, SentLow, SentHigh}} ->
+                    {ok, SentLow bor (SentHigh bsl 32)};
+                {sendfile, S, {error, Reason}} ->
+                    {error, Reason};
+                {'EXIT', S, _Reason} ->
+                    {error, closed}
+            end;
+        {error, Reason} ->
+            {error, Reason}
+    end.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
 %% RECV(insock(), Length, [Timeout]) -> {ok,Data} | {error, Reason}
 %%
 %% receive Length data bytes from a socket
diff --git a/erts/preloaded/src/zlib.erl b/erts/preloaded/src/zlib.erl
index 3170ab6351..a4ef42204d 100644
--- a/erts/preloaded/src/zlib.erl
+++ b/erts/preloaded/src/zlib.erl
@@ -20,7 +20,8 @@
 
 -module(zlib).
 
--export([open/0,close/1,deflateInit/1,deflateInit/2,deflateInit/6,
+-export([open/0,close/1,set_controlling_process/2,
+         deflateInit/1,deflateInit/2,deflateInit/6,
          deflateSetDictionary/2,deflateReset/1,deflateParams/3,
          deflate/2,deflate/3,deflateEnd/1,
          inflateInit/1,inflateInit/2,inflateInit/3,
@@ -128,6 +129,14 @@ close(Z) ->
 close_nif(_Z) ->
     erlang:nif_error(undef).
 
+-spec set_controlling_process(Z, Pid) -> 'ok' when
+      Z :: zstream(),
+      Pid :: pid().
+set_controlling_process(Z, Pid) ->
+    set_controller_nif(Z, Pid).
+set_controller_nif(_Z, _Pid) ->
+    erlang:nif_error(undef).
+
 -spec deflateInit(Z) -> 'ok' when
       Z :: zstream().
 deflateInit(Z) ->
@@ -179,14 +188,13 @@ deflateReset_nif(_Z) ->
 deflateParams(Z, Level0, Strategy0) ->
     Level = arg_level(Level0),
     Strategy = arg_strategy(Strategy0),
+    Progress = deflate(Z, <<>>, sync),
     case deflateParams_nif(Z, Level, Strategy) of
-        buf_error ->
-            %% We had data left in the pipe; flush everything and stash it away
-            %% for the next deflate call before trying again.
-            Output = deflate(Z, <<>>, full),
-            save_progress(Z, deflate, Output),
-            deflateParams_nif(Z, Level, Strategy);
-        Any -> Any
+        ok ->
+            save_progress(Z, deflate, Progress),
+            ok;
+        Other ->
+            Other
     end.
 deflateParams_nif(_Z, _Level, _Strategy) ->
     erlang:nif_error(undef).
diff --git a/erts/start_scripts/Makefile b/erts/start_scripts/Makefile
index 20fea99016..5a47ad9616 100644
--- a/erts/start_scripts/Makefile
+++ b/erts/start_scripts/Makefile
@@ -171,8 +171,7 @@ $(ERL_TOP)/bin/no_dot_erlang.script:
 	  $(ERLC) $(SCRIPT_PATH) +no_warn_sasl +otp_build +no_dot_erlang -o $@ $(SS_ROOT)/no_dot_erlang.rel )
 
 ## Special target used from system/build/Makefile for source code release bootstrap.
-## Add no_dot_erlang after next release
-bootstrap_scripts: $(SS_ROOT)/start_clean.rel
+bootstrap_scripts: $(SS_ROOT)/start_clean.rel $(SS_ROOT)/no_dot_erlang.rel
 	$(V_at)$(INSTALL_DIR) $(TESTROOT)/bin
 	$(V_at)$(INSTALL_DIR) $(SS_TMP)
 	$(V_at)( cd $(SS_TMP) && \
@@ -181,6 +180,10 @@ bootstrap_scripts: $(SS_ROOT)/start_clean.rel
 	$(V_at)( cd $(SS_TMP) && \
 	  $(ERLC) $(BOOTSTRAP_SCRIPT_PATH) +otp_build +no_module_tests \
 	    -o $(TESTROOT)/bin/start_clean.script $(SS_ROOT)/start_clean.rel )
+	$(V_at)( cd $(SS_TMP) && \
+	  $(ERLC) $(BOOTSTRAP_SCRIPT_PATH) +otp_build +no_module_tests \
+	    -o $(TESTROOT)/bin/no_dot_erlang.script $(SS_ROOT)/no_dot_erlang.rel )
+
 
 clean:
 	$(V_at)$(RM) $(REL_SCRIPTS) $(INSTALL_SCRIPTS)
diff --git a/erts/test/erlc_SUITE.erl b/erts/test/erlc_SUITE.erl
index 237558a129..394ecc8964 100644
--- a/erts/test/erlc_SUITE.erl
+++ b/erts/test/erlc_SUITE.erl
@@ -257,7 +257,7 @@ erlc() ->
 make_dep_options(Config) ->
     {SrcDir,OutDir,Cmd} = get_cmd(Config),
     FileName = filename:join(SrcDir, "erl_test_ok.erl"),
-
+    BeamFileName = filename:join(OutDir, "erl_test_ok.beam"),
 
     DepRE = ["/erl_test_ok[.]beam: \\\\$",
              "/system_test/erlc_SUITE_data/src/erl_test_ok[.]erl \\\\$",
@@ -285,22 +285,29 @@ make_dep_options(Config) ->
      "missing.hrl$",
      "_OK_"],
 
+    file:delete(BeamFileName),
+
     %% Test plain -M
     run(Config, Cmd, FileName, "-M", DepRE),
+    false = exists(BeamFileName),
 
     %% Test -MF File
     DepFile = filename:join(OutDir, "my.deps"),
     run(Config, Cmd, FileName, "-MF "++DepFile, ["_OK_"]),
     {ok,MFBin} = file:read_file(DepFile),
     verify_result(binary_to_list(MFBin)++["_OK_"], DepRE),
+    false = exists(BeamFileName),
 
     %% Test -MD
     run(Config, Cmd, FileName, "-MD", ["_OK_"]),
     MDFile = filename:join(OutDir, "erl_test_ok.Pbeam"),
     {ok,MFBin} = file:read_file(MDFile),
+    file:delete(MDFile), %% used further down!
+    false = exists(BeamFileName),
 
     %% Test -M -MT Target
     run(Config, Cmd, FileName, "-M -MT target", DepRETarget),
+    false = exists(BeamFileName),
 
     %% Test -MF File -MT Target
     TargetDepFile = filename:join(OutDir, "target.deps"),
@@ -308,23 +315,110 @@ make_dep_options(Config) ->
         ["_OK_"]),
     {ok,TargetBin} = file:read_file(TargetDepFile),
     verify_result(binary_to_list(TargetBin)++["_OK_"], DepRETarget),
+    file:delete(TargetDepFile),
+    false = exists(BeamFileName),
 
     %% Test -MD -MT Target
     run(Config, Cmd, FileName, "-MD -MT target", ["_OK_"]),
     TargetMDFile = filename:join(OutDir, "erl_test_ok.Pbeam"),
     {ok,TargetBin} = file:read_file(TargetMDFile),
+    file:delete(TargetDepFile),
+    false = exists(BeamFileName),
 
     %% Test -M -MQ Target. (Note: Passing a $ on the command line
     %% portably for Unix and Windows is tricky, so we will just test
     %% that MQ works at all.)
     run(Config, Cmd, FileName, "-M -MQ target", DepRETarget),
+    false = exists(BeamFileName),
 
     %% Test -M -MP
     run(Config, Cmd, FileName, "-M -MP", DepREMP),
+    false = exists(BeamFileName),
 
     %% Test -M -MG
     MissingHeader = filename:join(SrcDir, "erl_test_missing_header.erl"),
     run(Config, Cmd, MissingHeader, "-M -MG", DepREMissing),
+    false = exists(BeamFileName),
+
+    %%
+    %% check the above variants with side-effect -MMD
+    %%
+
+    %% since compiler is run on the erlang code a warning will be
+    %% issued by the compiler, match that.
+    WarningRE = "/system_test/erlc_SUITE_data/src/erl_test_ok.erl:[0-9]+: "
+        "Warning: function foo/0 is unused$",
+    ErrorRE = "/system_test/erlc_SUITE_data/src/erl_test_missing_header.erl:"
+        "[0-9]+: can't find include file \"missing.hrl\"$",
+
+    DepRE_MMD = insert_before("_OK_", WarningRE, DepRE),
+    DepRETarget_MMD = insert_before("_OK_", WarningRE, DepRETarget),
+    DepREMP_MMD = insert_before("_OK_",WarningRE,DepREMP),
+    DepREMissing_MMD = (insert_before("_OK_",ErrorRE,DepREMissing)--
+                            ["_OK_"]) ++ ["_ERROR_"],
+    CompRE = [WarningRE,"_OK_"],
+
+
+    %% Test plain -MMD -M
+    run(Config, Cmd, FileName, "-MMD -M", DepRE_MMD),
+    true = exists(BeamFileName),
+    file:delete(BeamFileName),
+
+    %% Test -MMD -MF File
+    DepFile = filename:join(OutDir, "my.deps"),
+    run(Config, Cmd, FileName, "-MMD -MF "++DepFile, CompRE),
+    {ok,MFBin} = file:read_file(DepFile),
+    verify_result(binary_to_list(MFBin)++["_OK_"], DepRE),
+    true = exists(BeamFileName),
+    file:delete(BeamFileName),
+
+    %% Test -MMD -MD
+    run(Config, Cmd, FileName, "-MMD -MD", CompRE),
+    MDFile = filename:join(OutDir, "erl_test_ok.Pbeam"),
+    {ok,MFBin} = file:read_file(MDFile),
+    file:delete(MDFile), %% used further down!
+    true = exists(BeamFileName),
+    file:delete(BeamFileName),
+
+    %% Test -MMD -M -MT Target
+    run(Config, Cmd, FileName, "-MMD -M -MT target", DepRETarget_MMD),
+    true = exists(BeamFileName),
+    file:delete(BeamFileName),
+
+    %% Test -MMD -MF File -MT Target
+    TargetDepFile = filename:join(OutDir, "target.deps"),
+    run(Config, Cmd, FileName, "-MMD -MF "++TargetDepFile++" -MT target",
+        CompRE),
+    {ok,TargetBin} = file:read_file(TargetDepFile),
+    verify_result(binary_to_list(TargetBin)++["_OK_"], DepRETarget),
+    file:delete(TargetDepFile),
+    true = exists(BeamFileName),
+    file:delete(BeamFileName),
+
+    %% Test -MMD -MD -MT Target
+    run(Config, Cmd, FileName, "-MMD -MD -MT target", CompRE),
+    TargetMDFile = filename:join(OutDir, "erl_test_ok.Pbeam"),
+    {ok,TargetBin} = file:read_file(TargetMDFile),
+    file:delete(TargetDepFile),
+    true = exists(BeamFileName),
+    file:delete(BeamFileName),
+
+    %% Test -MMD -M -MQ Target. (Note: Passing a $ on the command line
+    %% portably for Unix and Windows is tricky, so we will just test
+    %% that MQ works at all.)
+    run(Config, Cmd, FileName, "-MMD -M -MQ target", DepRETarget_MMD),
+    true = exists(BeamFileName),
+    file:delete(BeamFileName),
+
+    %% Test -MMD -M -MP
+    run(Config, Cmd, FileName, "-MMD -M -MP", DepREMP_MMD),
+    true = exists(BeamFileName),
+    file:delete(BeamFileName),
+
+    %% Test -MMD -M -MG
+    MissingHeader = filename:join(SrcDir, "erl_test_missing_header.erl"),
+    run(Config, Cmd, MissingHeader, "-MMD -M -MG", DepREMissing_MMD),
+    false = exists(BeamFileName),
     ok.
 
 %% Runs a command.
@@ -341,6 +435,12 @@ verify_result(Result, Expect) ->
     io:format("Expected: ~p", [Expect]),
     match_messages(Messages, Expect).
 
+%% insert What before Item, crash if Item is not found
+insert_before(Item, What, [Item|List]) ->
+    [What,Item|List];
+insert_before(Item, What, [Other|List]) ->
+    [Other|insert_before(Item, What, List)].
+
 split([$\n|Rest], Current, Lines) ->
     split(Rest, [], [lists:reverse(Current)|Lines]);
 split([$\r|Rest], Current, Lines) ->
diff --git a/erts/vsn.mk b/erts/vsn.mk
index 1c6472a0ab..8b22afea3b 100644
--- a/erts/vsn.mk
+++ b/erts/vsn.mk
@@ -18,7 +18,7 @@
 # %CopyrightEnd%
 # 
 
-VSN = 9.1.1
+VSN = 9.2
 
 # Port number 4365 in 4.2
 # Port number 4366 in 4.3
diff --git a/lib/asn1/doc/src/fascicules.xml b/lib/asn1/doc/src/fascicules.xml
deleted file mode 100644
index 837b4f57f4..0000000000
--- a/lib/asn1/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/asn1/doc/src/notes.xml b/lib/asn1/doc/src/notes.xml
index ae6660c143..1abe983221 100644
--- a/lib/asn1/doc/src/notes.xml
+++ b/lib/asn1/doc/src/notes.xml
@@ -32,6 +32,31 @@
   <p>This document describes the changes made to the asn1 application.</p>
 
 
+<section><title>Asn1 5.0.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    There was a issue with BER encoding and the
+	    <c>undec_rest</c> option in generated decoders. An
+	    exception could be thrown instead of returning an error
+	    tuple.</p>
+          <p>
+	    Own Id: OTP-14786 Aux Id: ERL-518 </p>
+        </item>
+        <item>
+          <p>
+	    The asn1ct:test functions crashed on decoders generated
+	    with options <c>no_ok_wrapper</c>, <c>undec_rest</c>.</p>
+          <p>
+	    Own Id: OTP-14787 Aux Id: ERL-518 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Asn1 5.0.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/asn1/src/asn1ct.erl b/lib/asn1/src/asn1ct.erl
index f36d71a601..81a2735a0d 100644
--- a/lib/asn1/src/asn1ct.erl
+++ b/lib/asn1/src/asn1ct.erl
@@ -1335,25 +1335,39 @@ test_value(Module, Type, Value) ->
     in_process(fun() ->
                    case catch Module:encode(Type, Value) of
                        {ok, Bytes} ->
-                           NewBytes = prepare_bytes(Bytes),
-                           case Module:decode(Type, NewBytes) of
-                               {ok, Value} ->
-                                   {ok, {Module, Type, Value}};
-                               {ok, Res}   ->
-                                   {error, {asn1,
-                                            {encode_decode_mismatch,
-                                             {{Module, Type, Value}, Res}}}};
-                               Error       ->
-                                   {error, {asn1,
-                                            {{decode,
-                                              {Module, Type, Value}, Error}}}}
-                           end;
+                           test_value_decode(Module, Type, Value, Bytes);
+                       Bytes when is_binary(Bytes) ->
+                           test_value_decode(Module, Type, Value, Bytes);
                        Error ->
                            {error, {asn1,
                                     {encode, {{Module, Type, Value}, Error}}}}
                    end
                end).
 
+
+test_value_decode(Module, Type, Value, Bytes) ->
+    NewBytes = prepare_bytes(Bytes),
+    case Module:decode(Type, NewBytes) of
+        {ok,Value}      -> {ok, {Module,Type,Value}};
+        {ok,Value,<<>>} -> {ok, {Module,Type,Value}};
+        Value           -> {ok, {Module,Type,Value}};
+        {Value,<<>>}    -> {ok, {Module,Type,Value}};
+
+        %% Errors:
+        {ok, Res}   ->
+            {error, {asn1,
+                     {encode_decode_mismatch,
+                      {{Module, Type, Value}, Res}}}};
+        {ok, Res, Rest} ->
+            {error, {asn1,
+                     {encode_decode_mismatch,
+                      {{Module, Type, Value}, {Res,Rest}}}}};
+        Error       ->
+            {error, {asn1,
+                     {{decode,
+                       {Module, Type, Value}, Error}}}}
+    end.
+
 value(Module, Type) -> value(Module, Type, []).
 
 value(Module, Type, Includes) ->
diff --git a/lib/asn1/src/asn1ct_gen.erl b/lib/asn1/src/asn1ct_gen.erl
index 84c7f39d55..efbc6d6380 100644
--- a/lib/asn1/src/asn1ct_gen.erl
+++ b/lib/asn1/src/asn1ct_gen.erl
@@ -707,6 +707,7 @@ gen_exports([_|_]=L0, Prefix, Arity) ->
 pgen_dispatcher(Erules, []) ->
     gen_info_functions(Erules);
 pgen_dispatcher(Gen, Types) ->
+    %% MODULE HEAD
     emit(["-export([encode/2,decode/2]).",nl,nl]),
     gen_info_functions(Gen),
 
@@ -714,6 +715,7 @@ pgen_dispatcher(Gen, Types) ->
     NoFinalPadding = lists:member(no_final_padding, Options),
     NoOkWrapper = proplists:get_bool(no_ok_wrapper, Options),
 
+    %% ENCODER
     Call = case Gen of
 	       #gen{erule=per,aligned=true} ->
 		   asn1ct_func:need({per,complete,1}),
@@ -740,6 +742,7 @@ pgen_dispatcher(Gen, Types) ->
     end,
     emit([nl,nl]),
 
+    %% DECODER
     ReturnRest = proplists:get_bool(undec_rest, Gen#gen.options),
     Data = case Gen#gen.erule =:= ber andalso ReturnRest of
 	       true -> "Data0";
@@ -747,6 +750,12 @@ pgen_dispatcher(Gen, Types) ->
 	   end,
 
     emit(["decode(Type, ",Data,") ->",nl]),
+
+    case NoOkWrapper of
+        false -> emit(["try",nl]);
+        true -> ok
+    end,
+
     DecWrap =
 	case {Gen,ReturnRest} of
 	    {#gen{erule=ber},false} ->
@@ -754,32 +763,38 @@ pgen_dispatcher(Gen, Types) ->
 		"element(1, ber_decode_nif(Data))";
 	    {#gen{erule=ber},true} ->
 		asn1ct_func:need({ber,ber_decode_nif,1}),
-		emit(["{Data,Rest} = ber_decode_nif(Data0),",nl]),
+		emit(["   {Data,Rest} = ber_decode_nif(Data0),",nl]),
 		"Data";
 	    {_,_} ->
 		"Data"
 	end,
-    emit([case NoOkWrapper of
-	      false -> "try";
-	      true -> "case"
-	  end, " decode_disp(Type, ",DecWrap,") of",nl]),
-    case Gen of
-	#gen{erule=ber} ->
-	    emit(["  Result ->",nl]);
-	#gen{erule=per} ->
-	    emit(["  {Result,Rest} ->",nl])
-    end,
-    case ReturnRest of
-	false -> result_line(NoOkWrapper, ["Result"]);
-	true ->  result_line(NoOkWrapper, ["Result","Rest"])
+
+    DecodeDisp = ["decode_disp(Type, ",DecWrap,")"],
+    case {Gen,ReturnRest} of
+	{#gen{erule=ber},true} ->
+	    emit(["   Result = ",DecodeDisp,",",nl]),
+            result_line(NoOkWrapper, ["Result","Rest"]);
+	{#gen{erule=ber},false} ->
+	    emit(["   Result = ",DecodeDisp,",",nl]),
+            result_line(NoOkWrapper, ["Result"]);
+
+
+	{#gen{erule=per},true} ->
+	    emit(["   {Result,Rest} = ",DecodeDisp,",",nl]),
+            result_line(NoOkWrapper, ["Result","Rest"]);
+	{#gen{erule=per},false} ->
+	    emit(["   {Result,_Rest} = ",DecodeDisp,",",nl]),
+            result_line(NoOkWrapper, ["Result"])
     end,
+
     case NoOkWrapper of
 	false ->
 	    emit([nl,try_catch(),nl,nl]);
 	true ->
-	    emit([nl,"end.",nl,nl])
+	    emit([".",nl,nl])
     end,
 
+    %% REST of MODULE
     gen_decode_partial_incomplete(Gen),
     gen_partial_inc_dispatcher(Gen),
 
@@ -787,7 +802,7 @@ pgen_dispatcher(Gen, Types) ->
     gen_dispatcher(Types, "decode_disp", "dec_").
 
 result_line(NoOkWrapper, Items) ->
-    S = ["    "|case NoOkWrapper of
+    S = ["   "|case NoOkWrapper of
 		    false -> result_line_1(["ok"|Items]);
 		    true -> result_line_1(Items)
 		end],
diff --git a/lib/asn1/vsn.mk b/lib/asn1/vsn.mk
index ef83b9e3dc..4cd89089e9 100644
--- a/lib/asn1/vsn.mk
+++ b/lib/asn1/vsn.mk
@@ -1 +1 @@
-ASN1_VSN = 5.0.3
+ASN1_VSN = 5.0.4
diff --git a/lib/common_test/doc/src/Makefile b/lib/common_test/doc/src/Makefile
index faa2d58a06..293ef591cb 100644
--- a/lib/common_test/doc/src/Makefile
+++ b/lib/common_test/doc/src/Makefile
@@ -57,11 +57,10 @@ XML_REF3_FILES = ct.xml \
         ct_testspec.xml
 XML_REF6_FILES = common_test_app.xml
 
-XML_PART_FILES = part.xml 
-#	part_notes.xml \
-#	part_notes_history.xml
+XML_PART_FILES = part.xml
 
 XML_CHAPTER_FILES = \
+	introduction.xml \
 	basics_chapter.xml \
 	getting_started_chapter.xml \
 	install_chapter.xml \
@@ -76,8 +75,7 @@ XML_CHAPTER_FILES = \
 	event_handler_chapter.xml \
 	ct_hooks_chapter.xml \
 	dependencies_chapter.xml \
-	notes.xml \
-	notes_history.xml 
+	notes.xml
 
 BOOK_FILES = book.xml
 
@@ -111,10 +109,10 @@ SPECS_FILES = $(XML_REF3_FILES:%.xml=$(SPECDIR)/specs_%.xml)
 TOP_SPECS_FILE = specs.xml
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 SPECS_FLAGS = -I../../include -I../../../snmp/include \
 	-I../../../kernel/include
 
@@ -131,14 +129,14 @@ $(TOP_PDF_FILE): $(XML_FILES)
 
 pdf: $(TOP_PDF_FILE)
 
-html: gifs $(HTML_REF_MAN_FILE) 
+html: gifs $(HTML_REF_MAN_FILE)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
 man: $(MAN6_FILES) $(MAN3_FILES) $(MAN1_FILES)
 
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
@@ -147,11 +145,11 @@ clean clean_docs:
 	rm -f $(MAN6DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
 	rm -f $(SPECDIR)/*
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 
diff --git a/lib/common_test/doc/src/ct.xml b/lib/common_test/doc/src/ct.xml
index 1a3cfdb0c5..afd8741cd1 100644
--- a/lib/common_test/doc/src/ct.xml
+++ b/lib/common_test/doc/src/ct.xml
@@ -1060,6 +1060,42 @@
       </desc>
     </func>
 
+     <func>
+      <name>remaining_test_procs() -&gt; {TestProcs,SharedGL,OtherGLs}</name>
+      <fsummary>>This function will return the identity of test- and group
+       leader processes that are still running at the time of this call.</fsummary>
+      <type>
+        <v>TestProcs = [{pid(),GL}]</v>
+	<v>GL = pid()</v>
+        <v>SharedGL = pid()</v>
+        <v>OtherGLs = [pid()]</v>
+      </type>
+      <desc><marker id="remaining_test_procs-0"/>
+        <p>This function will return the identity of test- and group
+	leader processes that are still running at the time of this call.
+	<c>TestProcs</c> are processes in the system that have a Common Test IO
+	process as group leader. <c>SharedGL</c> is the central Common Test
+	IO process, responsible for printing to log files for configuration
+	functions and sequentially executing test cases. <c>OtherGLs</c> are
+	Common Test IO processes that print to log files for test cases
+	in parallel test case groups.</p>
+	<p>The process information returned by this function may be
+	used to locate and terminate remaining processes after tests have
+	finished executing. The function would typically by called from
+	Common Test Hook functions.</p>
+	<p>Note that processes that execute configuration functions or
+	test cases are never included in <c>TestProcs</c>. It is therefore safe
+	to use post configuration hook functions (such as post_end_per_suite,
+	post_end_per_group, post_end_per_testcase) to terminate all processes
+	in <c>TestProcs</c> that have the current group leader process as its group
+	leader.</p>
+	<p>Note also that the shared group leader (<c>SharedGL</c>) must never be
+	terminated by the user, only by Common Test. Group leader processes
+	for parallel test case groups (<c>OtherGLs</c>) may however be terminated
+	in post_end_per_group hook functions.</p>
+      </desc>
+    </func>   
+
     <func>
       <name>remove_config(Callback, Config) -&gt; ok</name>
       <fsummary>Removes configuration variables (together with
diff --git a/lib/common_test/doc/src/fascicules.xml b/lib/common_test/doc/src/fascicules.xml
deleted file mode 100644
index c4a28a699a..0000000000
--- a/lib/common_test/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-   <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/common_test/doc/src/notes.xml b/lib/common_test/doc/src/notes.xml
index b039023e0f..c6b928bb5d 100644
--- a/lib/common_test/doc/src/notes.xml
+++ b/lib/common_test/doc/src/notes.xml
@@ -33,6 +33,33 @@
     <file>notes.xml</file>
     </header>
 
+<section><title>Common_Test 1.15.3</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    A new function, <c>ct:remaining_test_procs/0</c>, returns
+	    the identity of test- and group leader processes that are
+	    still running at the time of the call.</p>
+          <p>
+	    Own Id: OTP-13832</p>
+        </item>
+        <item>
+          <p>
+	    A "latest test result" link is now displayed in the
+	    footer of each test index page, which performs a jump to
+	    the most recently generated test index. This is useful
+	    for making quick comparisons of results between test runs
+	    without having to traverse the log file tree.</p>
+          <p>
+	    Own Id: OTP-14281</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Common_Test 1.15.2</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/common_test/doc/src/part_notes.xml b/lib/common_test/doc/src/part_notes.xml
deleted file mode 100644
index 360c535e96..0000000000
--- a/lib/common_test/doc/src/part_notes.xml
+++ /dev/null
@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Common Test</title>
-    <prepared>Peter Andersson</prepared>
-    <docno></docno>
-    <date>2007-12-01</date>
-    <rev></rev>
-    <file>part_notes.xml</file>
-  </header>
-  <description>
-    <p>Common Test - tool for automated testing, based on the Erlang/OTP Test Server.</p>
-    <p>For information about older versions see
-       <url href="part_notes_history_frame.html">release notes
-       history</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
-
diff --git a/lib/common_test/doc/src/part_notes_history.xml b/lib/common_test/doc/src/part_notes_history.xml
deleted file mode 100644
index d13bb858db..0000000000
--- a/lib/common_test/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Common Test</title>
-    <prepared>Peter Andersson</prepared>
-    <docno></docno>
-    <date>2007-12-01</date>
-    <rev></rev>
-    <file>part_notes.xml</file>
-  </header>
-  <include file="notes_history"></include>
-</part>
-
-
diff --git a/lib/common_test/src/ct.erl b/lib/common_test/src/ct.erl
index 875301a8b2..69e371a30f 100644
--- a/lib/common_test/src/ct.erl
+++ b/lib/common_test/src/ct.erl
@@ -89,6 +89,8 @@
 -export([get_target_name/1]).
 -export([parse_table/1, listenv/1]).
 
+-export([remaining_test_procs/0]).
+
 %%----------------------------------------------------------------------
 %% Exported types
 %%----------------------------------------------------------------------
@@ -1474,3 +1476,36 @@ continue() ->
 %%%      in order to let the test case proceed.</p>
 continue(TestCase) -> 
     test_server:continue(TestCase).
+
+
+%%%-----------------------------------------------------------------
+%%% @spec remaining_test_procs() -> {TestProcs,SharedGL,OtherGLs}
+%%%       TestProcs = [{pid(),GL}]
+%%%       GL = SharedGL = pid()
+%%%       OtherGLs = [pid()]
+%%%
+%%% @doc <p>This function will return the identity of test- and group
+%%%      leader processes that are still running at the time of this call.
+%%%      TestProcs are processes in the system that have a Common Test IO
+%%%      process as group leader. SharedGL is the central Common Test
+%%%      IO process, responsible for printing to log files for configuration
+%%%      functions and sequentially executing test cases. OtherGLs are
+%%%      Common Test IO processes that print to log files for test cases
+%%%      in parallel test case groups.</p>
+%%%      <p>The process information returned by this function may be
+%%%      used to locate and terminate remaining processes after tests have
+%%%      finished executing. The function would typically by called from
+%%%      Common Test Hook functions.</p>
+%%%      <p>Note that processes that execute configuration functions or
+%%%      test cases are never included in TestProcs. It is therefore safe
+%%%      to use post configuration hook functions (such as post_end_per_suite,
+%%%      post_end_per_group, post_end_per_testcase) to terminate all processes
+%%%      in TestProcs that have the current group leader process as its group
+%%%      leader.</p>
+%%%      <p>Note also that the shared group leader (SharedGL) must never be
+%%%      terminated by the user, only by Common Test. Group leader processes
+%%%      for parallel test case groups (OtherGLs) may however be terminated
+%%%      in post_end_per_group hook functions.</p>
+%%%      
+remaining_test_procs() ->
+    ct_util:remaining_test_procs().
diff --git a/lib/common_test/src/ct_config.erl b/lib/common_test/src/ct_config.erl
index b3f983dd46..6c87b11f8d 100644
--- a/lib/common_test/src/ct_config.erl
+++ b/lib/common_test/src/ct_config.erl
@@ -81,6 +81,7 @@ start(Mode) ->
 
 do_start(Parent) ->
     process_flag(trap_exit,true),
+    ct_util:mark_process(),
     register(ct_config_server,self()),
     ct_util:create_table(?attr_table,bag,#ct_conf.key),
     {ok,StartDir} = file:get_cwd(),
diff --git a/lib/common_test/src/ct_default_gl.erl b/lib/common_test/src/ct_default_gl.erl
index d1b52e5f4f..9ae430c546 100644
--- a/lib/common_test/src/ct_default_gl.erl
+++ b/lib/common_test/src/ct_default_gl.erl
@@ -55,6 +55,7 @@ stop() ->
 
 init([ParentGL]) ->
     register(?MODULE, self()),
+    ct_util:mark_process(),
     {ok,#{parent_gl_pid => ParentGL,
 	  parent_gl_monitor => erlang:monitor(process,ParentGL)}}.
 
diff --git a/lib/common_test/src/ct_event.erl b/lib/common_test/src/ct_event.erl
index 1a0ee4f3cd..8b5bba7600 100644
--- a/lib/common_test/src/ct_event.erl
+++ b/lib/common_test/src/ct_event.erl
@@ -137,6 +137,7 @@ is_alive() ->
 %% this function is called to initialize the event handler.
 %%--------------------------------------------------------------------
 init(RecvPids) ->
+    ct_util:mark_process(),
     %% RecvPids = [{RecvTag,Pid}]
     {ok,#state{receivers=RecvPids}}.
 
diff --git a/lib/common_test/src/ct_gen_conn.erl b/lib/common_test/src/ct_gen_conn.erl
index badb7c52ae..456bfd8bd1 100644
--- a/lib/common_test/src/ct_gen_conn.erl
+++ b/lib/common_test/src/ct_gen_conn.erl
@@ -186,9 +186,11 @@ end_log() ->
 do_within_time(Fun,Timeout) ->
     Self = self(),
     Silent = get(silent),
-    TmpPid = spawn_link(fun() -> put(silent,Silent),
-				 R = Fun(),
-				 Self ! {self(),R}
+    TmpPid = spawn_link(fun() -> 
+                                ct_util:mark_process(),
+                                put(silent,Silent),
+                                R = Fun(),
+                                Self ! {self(),R}
 			end),
     ConnPid = get(conn_pid),
     receive
@@ -301,6 +303,7 @@ return({To,Ref},Result) ->
 
 init_gen(Parent,Opts) ->
     process_flag(trap_exit,true),
+    ct_util:mark_process(),
     put(silent,false),
     try (Opts#gen_opts.callback):init(Opts#gen_opts.name,
 				      Opts#gen_opts.address,
diff --git a/lib/common_test/src/ct_hooks_lock.erl b/lib/common_test/src/ct_hooks_lock.erl
index fea298e535..a82be288e1 100644
--- a/lib/common_test/src/ct_hooks_lock.erl
+++ b/lib/common_test/src/ct_hooks_lock.erl
@@ -78,6 +78,7 @@ release() ->
 
 %% @doc Initiates the server
 init(Id) ->
+    ct_util:mark_process(),
     {ok, #state{ id = Id }}.
 
 %% @doc Handling call messages
diff --git a/lib/common_test/src/ct_logs.erl b/lib/common_test/src/ct_logs.erl
index 028c265420..9861b1e521 100644
--- a/lib/common_test/src/ct_logs.erl
+++ b/lib/common_test/src/ct_logs.erl
@@ -666,6 +666,7 @@ log_timestamp({MS,S,US}) ->
 
 logger(Parent, Mode, Verbosity) ->
     register(?MODULE,self()),
+    ct_util:mark_process(),
     %%! Below is a temporary workaround for the limitation of
     %%! max one test run per second. 
     %%! --->
@@ -1004,6 +1005,7 @@ print_to_log(async, FromPid, Category, TCGL, Content, EscChars, State) ->
 	if FromPid /= TCGL ->
 		IoFun = create_io_fun(FromPid, CtLogFd, EscChars),
 		fun() ->
+                        ct_util:mark_process(),
 			test_server:permit_io(TCGL, self()),
 
 			%% Since asynchronous io gets can get buffered if
@@ -1035,6 +1037,7 @@ print_to_log(async, FromPid, Category, TCGL, Content, EscChars, State) ->
 		end;
 	   true ->
 		fun() ->
+                        ct_util:mark_process(),
 			unexpected_io(FromPid, Category, ?MAX_IMPORTANCE,
 				      Content, CtLogFd, EscChars)
 		end
@@ -3002,6 +3005,7 @@ simulate() ->
     S = self(),
     Pid = spawn(fun() -> 
 			register(?MODULE,self()),
+                        ct_util:mark_process(),
 			S ! {self(),started},
 			simulate_logger_loop() 
 		end),
@@ -3129,8 +3133,8 @@ locate_priv_file(FileName) ->
 			filename:join(get(ct_run_dir), FileName);
 		    _ ->			
 			%% executed on other process than ct_logs
-			{ok,RunDir} = get_log_dir(true),
-			filename:join(RunDir, FileName)
+			{ok,LogDir} = get_log_dir(true),
+			filename:join(LogDir, FileName)
 		end,
 	    case filelib:is_file(PrivResultFile) of
 		true ->
@@ -3212,6 +3216,10 @@ get_ts_html_wrapper(TestName, Logdir, PrintLabel, Cwd, TableCols, Encoding) ->
 					  ?all_runs_name), Cwd),
     TestIndex = make_relative(filename:join(filename:dirname(CtLogdir),
 					    ?index_name), Cwd),
+    LatestTest = make_relative(filename:join(filename:dirname(CtLogdir),
+                                           ?suitelog_name++".latest.html"),
+                             Cwd),
+
     case Basic of
 	true ->
 	    TileFile = filename:join(filename:join(CTPath,"priv"),"tile1.jpg"),
@@ -3238,7 +3246,9 @@ get_ts_html_wrapper(TestName, Logdir, PrintLabel, Cwd, TableCols, Encoding) ->
 	      "<a href=\"", uri(AllRuns),
 	      "\">Test run history\n</a>  |  ",
 	      "<a href=\"", uri(TestIndex),
-	      "\">Top level test index\n</a>\n</p>\n",
+	      "\">Top level test index\n</a>  |  ",
+	      "<a href=\"", uri(LatestTest),
+              "\">Latest test result</a>\n</p>\n",
 	      Copyright,"</center>\n</body>\n</html>\n"]};
 	_ ->
 	    Copyright = 
@@ -3285,7 +3295,9 @@ get_ts_html_wrapper(TestName, Logdir, PrintLabel, Cwd, TableCols, Encoding) ->
 	      "<a href=\"", uri(AllRuns),
 	      "\">Test run history\n</a>  |  ",
 	      "<a href=\"", uri(TestIndex),
-	      "\">Top level test index\n</a>\n</p>\n",
+	      "\">Top level test index\n</a>  |  ",
+	      "<a href=\"", uri(LatestTest),
+              "\">Latest test result</a>\n</p>\n",
 	      Copyright,"</center>\n</body>\n</html>\n"]}
     end.
 
diff --git a/lib/common_test/src/ct_master.erl b/lib/common_test/src/ct_master.erl
index 44d3fb8f64..e2ea525cdd 100644
--- a/lib/common_test/src/ct_master.erl
+++ b/lib/common_test/src/ct_master.erl
@@ -346,6 +346,7 @@ init_master(Parent,NodeOptsList,EvHandlers,MasterLogDir,LogDirs,
     case whereis(ct_master) of
 	undefined ->
 	    register(ct_master,self()),
+            ct_util:mark_process(),
 	    ok;
 	_Pid ->
 	    io:format("~nWarning: ct_master already running!~n"),
@@ -690,6 +691,7 @@ refresh_logs([],Refreshed) ->
 init_node_ctrl(MasterPid,Cookie,Opts) ->
     %% make sure tests proceed even if connection to master is lost
     process_flag(trap_exit, true),
+    ct_util:mark_process(),
     MasterNode = node(MasterPid),
     group_leader(whereis(user),self()),
     io:format("~n********** node_ctrl process ~w started on ~w **********~n",
diff --git a/lib/common_test/src/ct_master_event.erl b/lib/common_test/src/ct_master_event.erl
index d535d1274e..bd4d1efc92 100644
--- a/lib/common_test/src/ct_master_event.erl
+++ b/lib/common_test/src/ct_master_event.erl
@@ -116,6 +116,7 @@ sync_notify(Event) ->
 %% this function is called to initialize the event handler.
 %%--------------------------------------------------------------------
 init(_) ->
+    ct_util:mark_process(),
     ct_master_logs:log("CT Master Event Handler started","",[]),
     {ok,#state{}}.
 
diff --git a/lib/common_test/src/ct_master_logs.erl b/lib/common_test/src/ct_master_logs.erl
index fd92f73f63..1308720823 100644
--- a/lib/common_test/src/ct_master_logs.erl
+++ b/lib/common_test/src/ct_master_logs.erl
@@ -88,6 +88,7 @@ stop() ->
 
 init(Parent,LogDir,Nodes) ->
     register(?MODULE,self()),
+    ct_util:mark_process(),
     Time = calendar:local_time(),
     RunDir = make_dirname(Time),
     RunDirAbs = filename:join(LogDir,RunDir),
diff --git a/lib/common_test/src/ct_repeat.erl b/lib/common_test/src/ct_repeat.erl
index c043c9846c..177ef37d1f 100644
--- a/lib/common_test/src/ct_repeat.erl
+++ b/lib/common_test/src/ct_repeat.erl
@@ -70,6 +70,7 @@ loop_test(If,Args) when is_list(Args) ->
 				    CtrlPid = self(),
 				    spawn(
 				      fun() ->
+                                              ct_util:mark_process(),
 					      stop_after(CtrlPid,Secs,ForceStop)
 				      end)
 			    end,
@@ -134,6 +135,7 @@ spawn_tester(script,Ctrl,Args) ->
 
 spawn_tester(func,Ctrl,Opts) ->
     Tester = fun() ->
+                     ct_util:mark_process(),
 		     case catch ct_run:run_test2(Opts) of
 			 {'EXIT',Reason} ->
 			     exit(Reason);
diff --git a/lib/common_test/src/ct_run.erl b/lib/common_test/src/ct_run.erl
index 9436236719..8c401cf3f5 100644
--- a/lib/common_test/src/ct_run.erl
+++ b/lib/common_test/src/ct_run.erl
@@ -250,6 +250,8 @@ finish(Tracing, ExitStatus, Args) ->
     end.
 
 script_start1(Parent, Args) ->
+    %% tag this process
+    ct_util:mark_process(),
     %% read general start flags
     Label = get_start_opt(label, fun([Lbl]) -> Lbl end, Args),
     Profile = get_start_opt(profile, fun([Prof]) -> Prof end, Args),
@@ -956,7 +958,10 @@ run_test(StartOpts) when is_list(StartOpts) ->
 -spec run_test1_fun(_) -> fun(() -> no_return()).
 
 run_test1_fun(StartOpts) ->
-    fun() -> run_test1(StartOpts) end.
+    fun() -> 
+            ct_util:mark_process(),
+            run_test1(StartOpts)
+    end.
 
 run_test1(StartOpts) when is_list(StartOpts) ->
     case proplists:get_value(refresh_logs, StartOpts) of
@@ -1447,7 +1452,10 @@ run_testspec(TestSpec) ->
 -spec run_testspec1_fun(_) -> fun(() -> no_return()).
 
 run_testspec1_fun(TestSpec) ->
-    fun() -> run_testspec1(TestSpec) end.
+    fun() -> 
+            ct_util:mark_process(),
+            run_testspec1(TestSpec)
+    end.
 
 run_testspec1(TestSpec) ->
     {ok,Cwd} = file:get_cwd(),
@@ -1906,10 +1914,12 @@ possibly_spawn(true, Tests, Skip, Opts) ->
     CTUtilSrv = whereis(ct_util_server),
     Supervisor = 
 	fun() ->
+                ct_util:mark_process(),
 		process_flag(trap_exit, true),
 		link(CTUtilSrv),
 		TestRun =
 		    fun() ->
+                            ct_util:mark_process(),
 			    TestResult = (catch do_run_test(Tests, Skip, Opts)),
 			    case TestResult of
 				{EType,_} = Error when EType == user_error;
diff --git a/lib/common_test/src/ct_slave.erl b/lib/common_test/src/ct_slave.erl
index 61e6446df8..0c16ad5980 100644
--- a/lib/common_test/src/ct_slave.erl
+++ b/lib/common_test/src/ct_slave.erl
@@ -318,6 +318,7 @@ monitor_master(MasterNode) ->
 
 % code of the masterdeath-waiter process
 monitor_master_int(MasterNode) ->
+    ct_util:mark_process(),
     erlang:monitor_node(MasterNode, true),
     receive
         {nodedown, MasterNode}->
diff --git a/lib/common_test/src/ct_telnet_client.erl b/lib/common_test/src/ct_telnet_client.erl
index c8d217cd2a..76e4b9ea70 100644
--- a/lib/common_test/src/ct_telnet_client.erl
+++ b/lib/common_test/src/ct_telnet_client.erl
@@ -118,6 +118,7 @@ get_data(Pid) ->
 %%%-----------------------------------------------------------------
 %%% Internal functions
 init(Parent, Server, Port, Timeout, KeepAlive, NoDelay, ConnName) ->
+    ct_util:mark_process(),
     case gen_tcp:connect(Server, Port, [list,{packet,0},{nodelay,NoDelay}], Timeout) of
 	{ok,Sock} ->
 	    dbg("~tp connected to: ~tp (port: ~w, keep_alive: ~w)\n",
diff --git a/lib/common_test/src/ct_util.erl b/lib/common_test/src/ct_util.erl
index 3c0fead5b2..10a06d5c88 100644
--- a/lib/common_test/src/ct_util.erl
+++ b/lib/common_test/src/ct_util.erl
@@ -65,6 +65,9 @@
 
 -export([warn_duplicates/1]).
 
+-export([mark_process/0, mark_process/1, is_marked/1, is_marked/2,
+         remaining_test_procs/0]).
+
 -export([get_profile_data/0, get_profile_data/1,
 	 get_profile_data/2, open_url/3]).
 
@@ -126,6 +129,7 @@ start(Mode, LogDir, Verbosity) ->
 do_start(Parent, Mode, LogDir, Verbosity) ->
     process_flag(trap_exit,true),
     register(ct_util_server,self()),
+    mark_process(),
     create_table(?conn_table,#conn.handle),
     create_table(?board_table,2),
     create_table(?suite_table,#suite_data.key),
@@ -934,6 +938,70 @@ warn_duplicates(Suites) ->
 %%% @spec
 %%%
 %%% @doc
+mark_process() ->
+    mark_process(system).
+
+mark_process(Type) ->
+    put(ct_process_type, Type).
+
+is_marked(Pid) ->
+    is_marked(Pid, system).
+
+is_marked(Pid, Type) ->
+    case process_info(Pid, dictionary) of
+        {dictionary,List} ->
+            Type == proplists:get_value(ct_process_type, List);
+        undefined ->
+            false
+    end.
+
+remaining_test_procs() ->
+    Procs = processes(),
+    {SharedGL,OtherGLs,Procs2} =
+        lists:foldl(
+          fun(Pid, ProcTypes = {Shared,Other,Procs1}) ->
+                  case is_marked(Pid, group_leader) of
+                      true ->
+                          if not is_pid(Shared) ->
+                                  case test_server_io:get_gl(true) of
+                                      Pid ->
+                                          {Pid,Other,
+                                           lists:delete(Pid,Procs1)};
+                                      _ ->
+                                          {Shared,[Pid|Other],Procs1}
+                                  end;
+                             true ->          % SharedGL already found
+                                  {Shared,[Pid|Other],Procs1}
+                          end;
+                      false ->
+                          case is_marked(Pid) of
+                              true ->
+                                  {Shared,Other,lists:delete(Pid,Procs1)};
+                              false ->
+                                  ProcTypes
+                          end
+                  end
+          end, {undefined,[],Procs}, Procs),
+
+    AllGLs = [SharedGL | OtherGLs],
+    TestProcs =
+        lists:flatmap(fun(Pid) ->
+                              case process_info(Pid, group_leader) of
+                                  {group_leader,GL} ->
+                                      case lists:member(GL, AllGLs) of
+                                          true  -> [{Pid,GL}];
+                                          false -> []
+                                      end;
+                                  undefined ->
+                                      []
+                              end
+                      end, Procs2),
+    {TestProcs, SharedGL, OtherGLs}.
+
+%%%-----------------------------------------------------------------
+%%% @spec
+%%%
+%%% @doc
 get_profile_data() ->
     get_profile_data(all).
 
diff --git a/lib/common_test/src/ct_webtool.erl b/lib/common_test/src/ct_webtool.erl
index 9016aca899..82aa78fc4b 100644
--- a/lib/common_test/src/ct_webtool.erl
+++ b/lib/common_test/src/ct_webtool.erl
@@ -343,6 +343,7 @@ code_change(_,State,_)->
 % Start the gen_server
 %----------------------------------------------------------------------
 init({Path,Config})->
+    ct_util:mark_process(),
     case filelib:is_dir(Path) of
 	true ->
 	    {ok, Table} = get_tool_files_data(),
diff --git a/lib/common_test/src/ct_webtool_sup.erl b/lib/common_test/src/ct_webtool_sup.erl
index c02ec69d04..6c6dbde0a6 100644
--- a/lib/common_test/src/ct_webtool_sup.erl
+++ b/lib/common_test/src/ct_webtool_sup.erl
@@ -46,6 +46,7 @@ stop(Pid)->
 %%          {error, Reason}   
 %%----------------------------------------------------------------------
 init(_StartArgs) ->
+    ct_util:mark_process(),
     %%Child1 = 
     %%Child2 ={webcover_backend,{webcover_backend,start_link,[]},permanent,2000,worker,[webcover_backend]},
     %%{ok,{{simple_one_for_one,5,10},[Child1]}}.
diff --git a/lib/common_test/src/cth_log_redirect.erl b/lib/common_test/src/cth_log_redirect.erl
index 8b29d0f96d..b05f0bd28b 100644
--- a/lib/common_test/src/cth_log_redirect.erl
+++ b/lib/common_test/src/cth_log_redirect.erl
@@ -56,6 +56,7 @@ id(_Opts) ->
     ?MODULE.
 
 init(?MODULE, _Opts) ->
+    ct_util:mark_process(),
     error_logger:add_report_handler(?MODULE),
     tc_log_async.
 
@@ -121,8 +122,8 @@ handle_event({_Type,GL,_Msg}, #eh_state{handle_remote_events = false} = State)
   when node(GL) /= node() ->
     {ok, State};
 handle_event(Event, #eh_state{log_func = LogFunc} = State) ->
-    case lists:keyfind(sasl, 1, application:which_applications()) of
-	false ->
+    case whereis(sasl_sup) of
+	undefined ->
 	    sasl_not_started;
 	_Else ->
 	    {ok, ErrLogType} = application:get_env(sasl, errlog_type),
diff --git a/lib/common_test/src/test_server.erl b/lib/common_test/src/test_server.erl
index 35a73e6d2e..7250041e13 100644
--- a/lib/common_test/src/test_server.erl
+++ b/lib/common_test/src/test_server.erl
@@ -415,6 +415,7 @@ run_test_case_apply(Mod, Func, Args, Name, RunInit, TimetrapData) ->
     St = #st{ref=Ref,pid=Pid,mf={Mod,Func},last_known_loc=unknown,
 	     status=starting,ret_val=[],comment="",timeout=infinity,
 	     config=hd(Args)},
+    ct_util:mark_process(),
     run_test_case_msgloop(St).
 
 %% Ugly bug (pre R5A):
@@ -785,6 +786,7 @@ spawn_fw_call(Mod,IPTC={init_per_testcase,Func},CurrConf,Pid,
 	      Why,Loc,SendTo) ->
     FwCall =
 	fun() ->
+                ct_util:mark_process(),
 		Skip = {skip,{failed,{Mod,init_per_testcase,Why}}},
 		%% if init_per_testcase fails, the test case
 		%% should be skipped
@@ -815,6 +817,7 @@ spawn_fw_call(Mod,EPTC={end_per_testcase,Func},EndConf,Pid,
 	      Why,_Loc,SendTo) ->
     FwCall =
 	fun() ->
+                ct_util:mark_process(),
 		{RetVal,Report} =
 		    case proplists:get_value(tc_status, EndConf) of
 			undefined ->
@@ -864,6 +867,7 @@ spawn_fw_call(Mod,EPTC={end_per_testcase,Func},EndConf,Pid,
 spawn_fw_call(FwMod,FwFunc,_,_Pid,{framework_error,FwError},_,SendTo) ->
     FwCall =
 	fun() ->
+                ct_util:mark_process(),
 		test_server_sup:framework_call(report, [framework_error,
 							{{FwMod,FwFunc},
 							 FwError}]),
@@ -880,6 +884,7 @@ spawn_fw_call(FwMod,FwFunc,_,_Pid,{framework_error,FwError},_,SendTo) ->
     spawn_link(FwCall);
 
 spawn_fw_call(Mod,Func,CurrConf,Pid,Error,Loc,SendTo) ->
+    ct_util:mark_process(),
     {Func1,EndTCFunc} = case Func of
 			    CF when CF == init_per_suite; CF == end_per_suite;
 				    CF == init_per_group; CF == end_per_group ->
@@ -918,6 +923,7 @@ start_job_proxy() ->
 
 %% The io_reply_proxy is not the most satisfying solution but it works...
 io_reply_proxy(ReplyTo) ->
+    ct_util:mark_process(),
     receive
 	IoReply when is_tuple(IoReply),
 		     element(1, IoReply) == io_reply ->
@@ -927,6 +933,7 @@ io_reply_proxy(ReplyTo) ->
     end.
 
 job_proxy_msgloop() ->
+    ct_util:mark_process(),
     receive
 
 	%%
@@ -1804,6 +1811,7 @@ break(CBM, TestCase, Comment) ->
 spawn_break_process(Pid, PName) ->
     spawn(fun() ->
 		  register(PName, self()),
+                  ct_util:mark_process(),
 		  receive
 		      continue -> continue(Pid);
 		      cancel -> ok
@@ -2001,6 +2009,7 @@ time_ms_apply(Func, TCPid, MultAndScale) ->
 
 user_timetrap_supervisor(Func, Spawner, TCPid, GL, T0, MultAndScale) ->
     process_flag(trap_exit, true),
+    ct_util:mark_process(),
     Spawner ! {self(),infinity},
     MonRef = monitor(process, TCPid),
     UserTTSup = self(),
@@ -2571,6 +2580,7 @@ run_on_shielded_node(Fun, CArgs) when is_function(Fun), is_list(CArgs) ->
 -spec start_job_proxy_fun(_, _) -> fun(() -> no_return()).
 start_job_proxy_fun(Master, Fun) ->
     fun () ->
+            ct_util:mark_process(),
             _ = start_job_proxy(),
             receive
                 Ref ->
diff --git a/lib/common_test/src/test_server_ctrl.erl b/lib/common_test/src/test_server_ctrl.erl
index c70ea4ef9d..3a454a1e84 100644
--- a/lib/common_test/src/test_server_ctrl.erl
+++ b/lib/common_test/src/test_server_ctrl.erl
@@ -89,6 +89,7 @@
 -define(logdir_ext, ".logs").
 -define(data_dir_suffix, "_data/").
 -define(suitelog_name, "suite.log").
+-define(suitelog_latest_name, "suite.log.latest").
 -define(coverlog_name, "cover.html").
 -define(raw_coverlog_name, "cover.log").
 -define(cross_coverlog_name, "cross_cover.html").
@@ -1126,6 +1127,7 @@ init_tester(Mod, Func, Args, Dir, Name, {_,_,MinLev}=Levels,
 	    RejectIoReqs, CreatePrivDir, TCCallback, ExtraTools) ->
     process_flag(trap_exit, true),
     _ = test_server_io:start_link(),
+    put(app, common_test),
     put(test_server_name, Name),
     put(test_server_dir, Dir),
     put(test_server_total_time, 0),
@@ -1150,6 +1152,12 @@ init_tester(Mod, Func, Args, Dir, Name, {_,_,MinLev}=Levels,
     end,
 
     %% before first print, read and set logging options
+    FWLogDir =
+        case test_server_sup:framework_call(get_log_dir, [], []) of
+            {ok,FwDir} -> FwDir;
+            _          -> filename:dirname(Dir)
+        end,
+    put(test_server_framework_logdir, FWLogDir),
     LogOpts = test_server_sup:framework_call(get_logopts, [], []),
     put(test_server_logopts, LogOpts),
 
@@ -1712,6 +1720,12 @@ start_log_file() ->
     test_server_io:set_fd(html, Html),
     test_server_io:set_fd(unexpected_io, Unexpected),
 
+    %% we must assume the redirection file (to the latest suite index) can
+    %% be stored on the level above the log directory of the current test
+    TopDir = filename:dirname(get(test_server_framework_logdir)),
+    RedirectLink = filename:join(TopDir, ?suitelog_latest_name ++ ?html_ext),
+    make_html_link(RedirectLink, HtmlName, redirect),
+
     make_html_link(filename:absname(?last_test ++ ?html_ext),
 		   HtmlName, filename:basename(Dir)),
     LinkName = filename:join(Dir, ?last_link),
@@ -1740,11 +1754,18 @@ make_html_link(LinkName, Target, Explanation) ->
 	       false ->
 		   "file:" ++ uri_encode(Target)
 	   end,
-    H = [html_header(Explanation),
-	 "<h1>Last test</h1>\n"
-	 "<a href=\"",Href,"\">",Explanation,"</a>\n"
-	 "</body>\n</html>\n"],
+    H = if Explanation == redirect ->
+                Meta = ["<meta http-equiv=\"refresh\" "
+                        "content=\"0; url=", Href, "\" />\n"],
+                [html_header("redirect", Meta), "</html>\n"];
+           true ->
+                [html_header(Explanation),
+                 "<h1>Last test</h1>\n"
+                 "<a href=\"",Href,"\">",Explanation,"</a>\n"
+                 "</body>\n</html>\n"]
+        end,
     ok = write_html_file(LinkName, H).
+    
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% start_minor_log_file(Mod, Func, ParallelTC) -> AbsName
@@ -3705,6 +3726,7 @@ run_test_case(Ref, Num, Mod, Func, Args, RunInit, TimetrapData, Mode) ->
 	    spawn_link(
 	      fun() ->
 		      process_flag(trap_exit, true),
+                      ct_util:mark_process(),
 		      _ = [put(Key, Val) || {Key,Val} <- Dictionary],
 		      set_io_buffering({tc,Main}),
 		      run_test_case1(Ref, Num, Mod, Func, Args, RunInit,
@@ -5658,6 +5680,13 @@ html_header(Title) ->
      "<body bgcolor=\"white\" text=\"black\" "
      "link=\"blue\" vlink=\"purple\" alink=\"red\">\n"].
 
+html_header(Title, Meta) ->
+    ["<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2 Final//EN\">\n"
+     "<!-- autogenerated by '", atom_to_list(?MODULE), "'. -->\n"
+     "<html>\n"
+     "<head>\n"
+     "<title>", Title, "</title>\n"] ++ Meta ++ ["</head>\n"].
+
 open_html_file(File) ->
     open_utf8_file(File).
 
diff --git a/lib/common_test/src/test_server_gl.erl b/lib/common_test/src/test_server_gl.erl
index ce7682d101..24dd5cd54c 100644
--- a/lib/common_test/src/test_server_gl.erl
+++ b/lib/common_test/src/test_server_gl.erl
@@ -132,6 +132,7 @@ set_props(GL, PropList) ->
 %%% Internal functions.
 
 init([TSIO]) ->
+    ct_util:mark_process(group_leader),
     EscChars = case application:get_env(test_server, esc_chars) of
 		   {ok,ECBool} -> ECBool;
 		   _           -> true
diff --git a/lib/common_test/src/test_server_io.erl b/lib/common_test/src/test_server_io.erl
index 062e3bd8ff..ef31521950 100644
--- a/lib/common_test/src/test_server_io.erl
+++ b/lib/common_test/src/test_server_io.erl
@@ -184,6 +184,7 @@ reset_state() ->
 
 init([]) ->
     process_flag(trap_exit, true),
+    ct_util:mark_process(),
     Empty = gb_trees:empty(),
     {ok,Shared} = test_server_gl:start_link(self()),
     {ok,#st{fds=Empty,shared_gl=Shared,gls=gb_sets:empty(),
@@ -262,7 +263,7 @@ handle_call(reset_state, From, #st{phase=stopping,pending_ops=Ops}=St) ->
 		 {Result,NewSt1}
 	 end,
     {noreply,St#st{pending_ops=[{From,Op}|Ops]}};
-handle_call(reset_state, _From, #st{fds=Fds,tags=Tags,gls=Gls,
+handle_call(reset_state, _From, #st{fds=Fds,tags=Tags,shared_gl=Shared0,gls=Gls,
 				    offline_buffer=OfflineBuff}) ->
     %% close open log files
     lists:foreach(fun(Tag) ->
@@ -273,6 +274,7 @@ handle_call(reset_state, _From, #st{fds=Fds,tags=Tags,gls=Gls,
 				  file:close(Fd)
 			  end
 		  end, Tags),
+    test_server_gl:stop(Shared0),
     GlList = gb_sets:to_list(Gls),
     _ = [test_server_gl:stop(GL) || GL <- GlList],
     timer:sleep(100),
@@ -320,7 +322,7 @@ handle_call(finish, From, St) ->
 
 handle_info({'EXIT',Pid,normal}, #st{gls=Gls0,stopping=From}=St) ->
     Gls = gb_sets:delete_any(Pid, Gls0),
-    case gb_sets:is_empty(Gls) andalso stopping =/= undefined of
+    case gb_sets:is_empty(Gls) andalso From =/= undefined of
 	true ->
 	    %% No more group leaders left.
 	    gen_server:reply(From, ok),
@@ -329,6 +331,9 @@ handle_info({'EXIT',Pid,normal}, #st{gls=Gls0,stopping=From}=St) ->
 	    %% Wait for more group leaders to finish.
 	    {noreply,St#st{gls=Gls,phase=stopping}}
     end;
+handle_info({'EXIT',Pid,killed}, #st{gls=Gls0}=St) ->
+    %% forced termination of group leader
+    {noreply,St#st{gls=gb_sets:delete_any(Pid, Gls0)}};
 handle_info({'EXIT',_Pid,Reason}, _St) ->
     exit(Reason);
 handle_info(stop_group_leaders, #st{gls=Gls}=St) ->
diff --git a/lib/common_test/src/test_server_node.erl b/lib/common_test/src/test_server_node.erl
index f0f9cea6e0..b2d4f199c3 100644
--- a/lib/common_test/src/test_server_node.erl
+++ b/lib/common_test/src/test_server_node.erl
@@ -749,6 +749,7 @@ unpack(Bin) ->
 id(I) -> I.
    
 print_data(Port) ->
+    ct_util:mark_process(),
     receive
 	{Port, {data, Bytes}} ->
 	    io:put_chars(Bytes),
diff --git a/lib/common_test/src/test_server_sup.erl b/lib/common_test/src/test_server_sup.erl
index 21f4be22fe..6ddbf1ad27 100644
--- a/lib/common_test/src/test_server_sup.erl
+++ b/lib/common_test/src/test_server_sup.erl
@@ -56,6 +56,7 @@ timetrap(Timeout0, Scale, Pid) ->
 
 timetrap(Timeout0, ReportTVal, Scale, Pid) ->
     process_flag(priority, max),
+    ct_util:mark_process(),
     Timeout = if not Scale -> Timeout0;
 		 true -> test_server:timetrap_scale_factor() * Timeout0
 	      end,
@@ -773,6 +774,7 @@ framework_call(Callback,Func,Args,DefaultReturn) ->
 		false ->
 		    ok
 	    end,
+            ct_util:mark_process(),
 	    try apply(Mod,Func,Args) of
 		Result ->
 		    Result
@@ -850,6 +852,7 @@ util_start() ->
 	undefined ->	
 	    spawn_link(fun() ->
 			       register(?MODULE, self()),
+                               put(app, common_test),
 			       util_loop(#util_state{starter=Starter})
 		       end),
 	    ok;
diff --git a/lib/common_test/src/vts.erl b/lib/common_test/src/vts.erl
index 99a109cfe8..83fcde2f48 100644
--- a/lib/common_test/src/vts.erl
+++ b/lib/common_test/src/vts.erl
@@ -157,6 +157,7 @@ test_info(_VtsPid,Type,Data) ->
 init(Parent) ->
     register(?MODULE,self()),
     process_flag(trap_exit,true),
+    ct_util:mark_process(),
     Parent ! {self(),started},
     {ok,Cwd} = file:get_cwd(),
     InitState = #state{start_dir=Cwd},
@@ -284,6 +285,7 @@ run_test1(State=#state{tests=Tests,current_log_dir=LogDir,
 		       logopts=LogOpts}) ->
     Self=self(),
     RunTest = fun() ->
+                      ct_util:mark_process(),
 		      case ct_run:do_run(Tests,[],LogDir,LogOpts) of
 			  {error,_Reason} ->
 			      aborted();
diff --git a/lib/common_test/test/Makefile b/lib/common_test/test/Makefile
index 0d9149f489..ecd1f727a2 100644
--- a/lib/common_test/test/Makefile
+++ b/lib/common_test/test/Makefile
@@ -73,7 +73,8 @@ MODULES= \
 	ct_log_SUITE \
         ct_SUITE \
 	ct_keep_logs_SUITE \
-	ct_unicode_SUITE
+	ct_unicode_SUITE \
+	ct_auto_clean_SUITE
 
 ERL_FILES= $(MODULES:%=%.erl)
 HRL_FILES= test_server_test_lib.hrl
diff --git a/lib/common_test/test/ct_auto_clean_SUITE.erl b/lib/common_test/test/ct_auto_clean_SUITE.erl
new file mode 100644
index 0000000000..fd81430d0d
--- /dev/null
+++ b/lib/common_test/test/ct_auto_clean_SUITE.erl
@@ -0,0 +1,262 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2009-2016. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(ct_auto_clean_SUITE).
+
+-compile(export_all).
+
+-include_lib("common_test/include/ct.hrl").
+-include_lib("common_test/include/ct_event.hrl").
+
+-define(eh, ct_test_support_eh).
+
+%%--------------------------------------------------------------------
+%% Function: init_per_suite(Config0) -> Config1 | {skip,Reason}
+%%
+%% Config0 = Config1 = [tuple()]
+%%   A list of key/value pairs, holding the test case configuration.
+%% Reason = term()
+%%   The reason for skipping the suite.
+%%
+%% Description: Since Common Test starts another Test Server
+%% instance, the tests need to be performed on a separate node (or
+%% there will be clashes with logging processes etc).
+%%--------------------------------------------------------------------
+init_per_suite(Config) ->
+    DataDir = ?config(data_dir, Config),
+    CTHs = filelib:wildcard(filename:join(DataDir,"cth_*.erl")),
+    ct:pal("CTHs: ~p",[CTHs]),
+    [ct:pal("Compiling ~p: ~p",
+	    [FileName,compile:file(FileName,[{outdir,DataDir},debug_info])]) ||
+	FileName <- CTHs],
+    ct_test_support:init_per_suite([{path_dirs,[DataDir]} | Config]).
+
+%%--------------------------------------------------------------------
+%% Function: end_per_suite(Config) -> void()
+%%
+%% Config = [tuple()]
+%%   A list of key/value pairs, holding the test case configuration.
+%%
+%% Description: Cleanup after the suite.
+%%--------------------------------------------------------------------
+end_per_suite(Config) ->
+    ct_test_support:end_per_suite(Config).
+
+%%--------------------------------------------------------------------
+%% Function: init_per_testcase(TestCase, Config0) -> Config1 |
+%%                                                   {skip,Reason}
+%% TestCase = atom()
+%%   Name of the test case that is about to run.
+%% Config0 = Config1 = [tuple()]
+%%   A list of key/value pairs, holding the test case configuration.
+%% Reason = term()
+%%   The reason for skipping the test case.
+%%
+%% Description: Initialization before each test case.
+%%
+%% Note: This function is free to add any key/value pairs to the Config
+%% variable, but should NOT alter/remove any existing entries.
+%%--------------------------------------------------------------------
+init_per_testcase(TestCase, Config) ->
+    ct_test_support:init_per_testcase(TestCase, Config).
+
+%%--------------------------------------------------------------------
+%% Function: end_per_testcase(TestCase, Config) -> void()
+%%
+%% TestCase = atom()
+%%   Name of the test case that is finished.
+%% Config = [tuple()]
+%%   A list of key/value pairs, holding the test case configuration.
+%%
+%% Description: Cleanup after each test case.
+%%--------------------------------------------------------------------
+end_per_testcase(TestCase, Config) ->
+    ct_test_support:end_per_testcase(TestCase, Config).
+
+%%--------------------------------------------------------------------
+%% Function: all(Clause) -> Descr | TestCases | {skip,Reason}
+%%
+%% Clause = doc | suite
+%%   Indicates expected return value.
+%% Descr = [string()] | []
+%%   String that describes the test suite.
+%% TestCases = [TestCase] 
+%% TestCase = atom()
+%%   Name of a test case.
+%% Reason = term()
+%%   The reason for skipping the test suite.
+%%
+%% Description: Returns a description of the test suite (doc) and a
+%%              list of all test cases in the suite (suite).
+%%--------------------------------------------------------------------
+suite() -> [{ct_hooks,[ts_install_cth]}].
+
+all() -> 
+    [clean].
+
+groups() -> 
+    [].
+
+init_per_group(_GroupName, Config) ->
+	Config.
+
+end_per_group(_GroupName, Config) ->
+	Config.
+
+%%--------------------------------------------------------------------
+%% TEST CASES
+%%--------------------------------------------------------------------
+
+%%--------------------------------------------------------------------
+%% Function: TestCase(Arg) -> Descr | Spec | ok | exit() | {skip,Reason}
+%%
+%% Arg = doc | suite | Config
+%%   Indicates expected behaviour and return value.
+%% Config = [tuple()]
+%%   A list of key/value pairs, holding the test case configuration.
+%% Descr = [string()] | []
+%%   String that describes the test case.
+%% Spec = [tuple()] | []
+%%   A test specification.
+%% Reason = term()
+%%   The reason for skipping the test case.
+%%
+%% Description: Test case function. Returns a description of the test
+%%              case (doc), then returns a test specification (suite),
+%%              or performs the actual test (Config).
+%%--------------------------------------------------------------------
+
+%%%-----------------------------------------------------------------
+%%% 
+
+clean(Config) when is_list(Config) -> 
+    DataDir = ?config(data_dir, Config),
+
+    ACSuite = filename:join(DataDir, "ac_SUITE"),
+    Opts0 = ct_test_support:get_opts(Config),
+    Opts = eh_opts(Config) ++ Opts0 ++ [{suite,ACSuite},
+                                        {ct_hooks,[cth_auto_clean]}],
+
+    ERPid = ct_test_support:start_event_receiver(Config),
+
+    ok = ct_test_support:run(Opts, Config),
+
+    Events = ct_test_support:get_events(ERPid, Config),
+    ct_test_support:log_events(?FUNCTION_NAME, 
+			       ct_test_support:reformat(Events, ?eh),
+			       ?config(priv_dir, Config),
+			       Opts),
+    TestEvents = events_to_check(?FUNCTION_NAME),
+    ok = ct_test_support:verify_events(TestEvents, Events, Config).
+
+
+%%%-----------------------------------------------------------------
+%%% HELP FUNCTIONS
+%%%-----------------------------------------------------------------
+
+eh_opts(Config) ->        
+    Level = ?config(trace_level, Config),
+    [{event_handler,{?eh,[{cbm,ct_test_support},{trace_level,Level}]}}].
+
+events_to_check(Test) ->
+    %% 2 tests (ct:run_test + script_start) is default
+    events_to_check(Test, 2).
+
+events_to_check(_, 0) ->
+    [];
+events_to_check(Test, N) ->
+    events(Test) ++ events_to_check(Test, N-1).
+
+events(clean) ->
+    [
+     {?eh,start_logging,{'DEF','RUNDIR'}},
+     {?eh,test_start,{'DEF',{'START_TIME','LOGDIR'}}},
+     {?eh,start_info,{1,1,9}},
+
+     {?eh,tc_start,{ac_SUITE,init_per_suite}},
+     {?eh,tc_done,{ac_SUITE,init_per_suite,ok}},
+
+     {?eh,tc_start,{ac_SUITE,tc1}},
+     {?eh,tc_done,{ac_SUITE,tc1,ok}},
+
+     {?eh,test_stats,{1,0,{0,0}}},
+
+     {?eh,tc_start,{ac_SUITE,tc2}},
+     {?eh,tc_done,{ac_SUITE,tc2,ok}},
+
+     {?eh,test_stats,{2,0,{0,0}}},
+
+     [{?eh,tc_start,{ac_SUITE,{init_per_group,s1,[]}}},
+      {?eh,tc_done,{ac_SUITE,{init_per_group,s1,[]},ok}},
+
+      {?eh,tc_start,{ac_SUITE,stc1}},
+      {?eh,tc_done,{ac_SUITE,stc1,ok}},
+
+      {?eh,test_stats,{3,0,{0,0}}},
+
+      {?eh,tc_start,{ac_SUITE,stc2}},
+      {?eh,tc_done,{ac_SUITE,stc2,ok}},
+
+      {?eh,test_stats,{4,0,{0,0}}},
+
+      {?eh,tc_start,{ac_SUITE,{end_per_group,s1,[]}}},
+      {?eh,tc_done,{ac_SUITE,{end_per_group,s1,[]},ok}}],
+
+     {parallel,
+      [{?eh,tc_start,{ac_SUITE,{init_per_group,p1,[parallel]}}},
+       {?eh,tc_done,{ac_SUITE,{init_per_group,p1,[parallel]},ok}},
+
+       {?eh,tc_start,{ac_SUITE,ptc1}},
+       {?eh,tc_start,{ac_SUITE,ptc2}},
+       {?eh,tc_done,{ac_SUITE,ptc1,ok}},
+       {?eh,test_stats,{5,0,{0,0}}},
+       {?eh,tc_done,{ac_SUITE,ptc2,ok}},
+       {?eh,test_stats,{6,0,{0,0}}},
+
+       {?eh,tc_start,{ac_SUITE,{end_per_group,p1,[parallel]}}},
+       {?eh,tc_done,{ac_SUITE,{end_per_group,p1,[parallel]},ok}}]},
+
+     [{?eh,tc_start,{ac_SUITE,{init_per_group,s2,[]}}},
+      {?eh,tc_done,{ac_SUITE,{init_per_group,s2,[]},ok}},
+
+      {?eh,tc_start,{ac_SUITE,stc1}},
+      {?eh,tc_done,{ac_SUITE,stc1,ok}},
+
+      {?eh,test_stats,{7,0,{0,0}}},
+
+      {?eh,tc_start,{ac_SUITE,stc2}},
+      {?eh,tc_done,{ac_SUITE,stc2,ok}},
+
+      {?eh,test_stats,{8,0,{0,0}}},
+
+      {?eh,tc_start,{ac_SUITE,{end_per_group,s2,[]}}},
+      {?eh,tc_done,{ac_SUITE,{end_per_group,s2,[]},ok}}],
+
+     {?eh,tc_start,{ac_SUITE,tc1}},
+     {?eh,tc_done,{ac_SUITE,tc1,ok}},
+
+     {?eh,test_stats,{9,0,{0,0}}},
+
+     {?eh,tc_start,{ac_SUITE,end_per_suite}},
+     {?eh,tc_done,{ac_SUITE,end_per_suite,ok}},
+
+     {?eh,test_done,{'DEF','STOP_TIME'}},
+     {?eh,stop_logging,[]}
+    ].
diff --git a/lib/common_test/test/ct_auto_clean_SUITE_data/ac_SUITE.erl b/lib/common_test/test/ct_auto_clean_SUITE_data/ac_SUITE.erl
new file mode 100644
index 0000000000..dae7c1e22c
--- /dev/null
+++ b/lib/common_test/test/ct_auto_clean_SUITE_data/ac_SUITE.erl
@@ -0,0 +1,181 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2009-2016. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(ac_SUITE).
+
+-compile(export_all).
+
+-include_lib("common_test/include/ct.hrl").
+
+%%--------------------------------------------------------------------
+%% @spec suite() -> Info
+%% Info = [tuple()]
+%% @end
+%%--------------------------------------------------------------------
+suite() ->
+    [{timetrap,{seconds,30}}].
+
+%%--------------------------------------------------------------------
+%% @spec init_per_suite(Config0) ->
+%%     Config1 | {skip,Reason} | {skip_and_save,Reason,Config1}
+%% Config0 = Config1 = [tuple()]
+%% Reason = term()
+%% @end
+%%--------------------------------------------------------------------
+init_per_suite(Config) ->
+    start_processes(),
+    Config.
+
+%%--------------------------------------------------------------------
+%% @spec end_per_suite(Config0) -> term() | {save_config,Config1}
+%% Config0 = Config1 = [tuple()]
+%% @end
+%%--------------------------------------------------------------------
+end_per_suite(_Config) ->
+    start_processes(),
+    ok.
+
+%%--------------------------------------------------------------------
+%% @spec init_per_group(GroupName, Config0) ->
+%%               Config1 | {skip,Reason} | {skip_and_save,Reason,Config1}
+%% GroupName = atom()
+%% Config0 = Config1 = [tuple()]
+%% Reason = term()
+%% @end
+%%--------------------------------------------------------------------
+init_per_group(_GroupName, Config) ->
+    start_processes(),
+    Config.
+
+%%--------------------------------------------------------------------
+%% @spec end_per_group(GroupName, Config0) ->
+%%               term() | {save_config,Config1}
+%% GroupName = atom()
+%% Config0 = Config1 = [tuple()]
+%% @end
+%%--------------------------------------------------------------------
+end_per_group(_GroupName, _Config) ->
+    start_processes(),
+    ok.
+                    
+%%--------------------------------------------------------------------
+%% @spec init_per_testcase(TestCase, Config0) ->
+%%               Config1 | {skip,Reason} | {skip_and_save,Reason,Config1}
+%% TestCase = atom()
+%% Config0 = Config1 = [tuple()]
+%% Reason = term()
+%% @end
+%%--------------------------------------------------------------------
+init_per_testcase(_TestCase, Config) ->
+    start_processes(),
+    Config.
+
+%%--------------------------------------------------------------------
+%% @spec end_per_testcase(TestCase, Config0) ->
+%%               term() | {save_config,Config1} | {fail,Reason}
+%% TestCase = atom()
+%% Config0 = Config1 = [tuple()]
+%% Reason = term()
+%% @end
+%%--------------------------------------------------------------------
+end_per_testcase(_TestCase, _Config) ->
+    start_processes(),
+    ok.
+
+%%--------------------------------------------------------------------
+%% @spec groups() -> [Group]
+%% Group = {GroupName,Properties,GroupsAndTestCases}
+%% GroupName = atom()
+%% Properties = [parallel | sequence | Shuffle | {RepeatType,N}]
+%% GroupsAndTestCases = [Group | {group,GroupName} | TestCase]
+%% TestCase = atom()
+%% Shuffle = shuffle | {shuffle,{integer(),integer(),integer()}}
+%% RepeatType = repeat | repeat_until_all_ok | repeat_until_all_fail |
+%%              repeat_until_any_ok | repeat_until_any_fail
+%% N = integer() | forever
+%% @end
+%%--------------------------------------------------------------------
+groups() ->
+    [{s1,[],[stc1,stc2]},
+     {p1,[parallel],[ptc1,ptc2]},
+     {s2,[],[stc1,stc2]}].
+
+%%! What about nested groups??
+
+%%--------------------------------------------------------------------
+%% @spec all() -> GroupsAndTestCases | {skip,Reason}
+%% GroupsAndTestCases = [{group,GroupName} | TestCase]
+%% GroupName = atom()
+%% TestCase = atom()
+%% Reason = term()
+%% @end
+%%--------------------------------------------------------------------
+all() -> 
+    [
+     [tc1,tc2],
+     {group,s1},
+     {group,p1},
+     {group,s2},
+     tc1
+    ].
+
+tc1(_Config) ->
+    start_processes(),
+    ok.
+
+tc2(_Config) ->
+    start_processes(),
+    ok.
+
+stc1(_Config) ->
+    start_processes(),
+    ok.
+
+stc2(_Config) ->
+    start_processes(),
+    ok.
+
+ptc1(_Config) ->
+    start_processes(),
+    ok.
+
+ptc2(_Config) ->
+    start_processes(),
+    ok.
+
+
+%%%-----------------------------------------------------------------
+%%% 
+
+start_processes() ->
+    Init = fun() ->
+                   process_flag(trap_exit, true),
+                   do_spawn(fun() -> receive _ -> ok end end),
+                   receive _ ->
+                           ok
+                   end
+           end,
+    do_spawn(Init).
+
+do_spawn(Fun) ->
+    Pid = spawn(Fun),
+    ct:log("Process ~w started with group leader ~w",
+           [Pid,element(2, process_info(Pid, group_leader))]),
+    Pid.
diff --git a/lib/common_test/test/ct_auto_clean_SUITE_data/cth_auto_clean.erl b/lib/common_test/test/ct_auto_clean_SUITE_data/cth_auto_clean.erl
new file mode 100644
index 0000000000..137c81969d
--- /dev/null
+++ b/lib/common_test/test/ct_auto_clean_SUITE_data/cth_auto_clean.erl
@@ -0,0 +1,214 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2009-2016. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(cth_auto_clean).
+
+%% CTH Callbacks
+-export([id/1, init/2,
+	 pre_init_per_suite/3, post_init_per_suite/4,
+         pre_end_per_suite/3, post_end_per_suite/4,
+	 pre_init_per_group/4, post_init_per_group/5,
+	 pre_end_per_group/4, post_end_per_group/5,
+	 pre_init_per_testcase/4, post_init_per_testcase/5,
+	 pre_end_per_testcase/4, post_end_per_testcase/5]).
+
+id(_Opts) ->
+    ?MODULE.
+
+init(?MODULE, _Opts) ->
+    ok.
+
+pre_init_per_suite(_Suite, Config, State) ->
+    identify(?FUNCTION_NAME),
+    SharedGL = test_server_io:get_gl(true),
+    SharedGL = find_and_kill(),
+    do_until(fun() -> ct:remaining_test_procs() end, {[],SharedGL,[]}),
+    %% get status of processes at startup, to be compared with end result
+    {Config, [{all_procs,processes()} | State]}.
+
+post_init_per_suite(_Suite, _Config, Return, State) ->
+    identify(?FUNCTION_NAME),
+    SharedGL = find_and_kill(),
+    do_until(fun() -> ct:remaining_test_procs() end, {[],SharedGL,[]}),
+    {Return, State}.
+
+pre_end_per_suite(_Suite, Config, State) ->
+    identify(?FUNCTION_NAME),
+    SharedGL = find_and_kill(),
+    do_until(fun() -> ct:remaining_test_procs() end, {[],SharedGL,[]}),
+    {Config, State}.
+
+post_end_per_suite(_Suite, _Config, Return, State) ->
+    identify(?FUNCTION_NAME),
+    SharedGL = find_and_kill(),
+    do_until(fun() -> ct:remaining_test_procs() end, {[],SharedGL,[]}),
+    AllProcs = processes(),
+    Remaining = AllProcs--proplists:get_value(all_procs, State),
+    ct:pal("Final remaining processes = ~p", [Remaining]),
+    %% only the end_per_suite process shoud remain at this point!
+    Remaining = [self()],
+    {Return, State}.
+
+pre_init_per_group(_Suite, _Group, Config, State) ->
+    identify(?FUNCTION_NAME),
+    SharedGL = find_and_kill(procs_and_gls),
+    do_until(fun() -> ct:remaining_test_procs() end, {[],SharedGL,[]}),
+    {Config, State}.
+
+post_init_per_group(_Suite, _Group, _Config, Result, State) -> 
+    identify(?FUNCTION_NAME),
+    SharedGL = find_and_kill(procs_and_gls),
+    do_until(fun() -> ct:remaining_test_procs() end, {[],SharedGL,[]}),
+    {Result, State}.
+
+pre_init_per_testcase(_Suite, _TC, Config, State) ->
+    identify(?FUNCTION_NAME),
+    ThisGL = group_leader(),
+    find_and_kill(proc, ThisGL),
+    case proplists:get_value(tc_group_properties, Config) of
+        [{name,_},parallel] ->
+            timer:sleep(1000);
+        _ ->
+            do_until(fun() -> element(1,ct:remaining_test_procs()) end, [])
+    end,
+    {Config, State}.
+
+post_init_per_testcase(_Suite, _TC, Config, Return, State) ->
+    identify(?FUNCTION_NAME),
+    ThisGL = group_leader(),
+    find_and_kill(proc, ThisGL),
+    case proplists:get_value(tc_group_properties, Config) of
+        [{name,_},parallel] ->
+            timer:sleep(1000);
+        _ ->
+            do_until(fun() -> element(1,ct:remaining_test_procs()) end, [])
+    end,
+    {Return, State}.
+
+pre_end_per_testcase(_Suite, _TC, Config, State) ->
+    identify(?FUNCTION_NAME),
+    ThisGL = group_leader(),
+    find_and_kill(proc, ThisGL),
+    case proplists:get_value(tc_group_properties, Config) of
+        [{name,_},parallel] ->
+            timer:sleep(1000);
+        _ ->
+            do_until(fun() -> element(1,ct:remaining_test_procs()) end, [])
+    end,
+    {Config, State}.
+
+post_end_per_testcase(_Suite, _TC, Config, Result, State) ->
+    identify(?FUNCTION_NAME),
+    ThisGL = group_leader(),
+    find_and_kill(proc, ThisGL),
+    case proplists:get_value(tc_group_properties, Config) of
+        [{name,_},parallel] ->
+            timer:sleep(1000);
+        _ ->
+            do_until(fun() -> element(1,ct:remaining_test_procs()) end, [])
+    end,
+    {Result, State}.
+
+pre_end_per_group(_Suite, _Group, Config, State) ->
+    identify(?FUNCTION_NAME),
+    SharedGL = find_and_kill(procs_and_gls),
+    do_until(fun() -> ct:remaining_test_procs() end, {[],SharedGL,[]}),
+    {Config, State}.
+
+post_end_per_group(_Suite, _Group, _Config, Return, State) ->
+    identify(?FUNCTION_NAME),
+    SharedGL = find_and_kill(procs_and_gls),
+    do_until(fun() -> ct:remaining_test_procs() end, {[],SharedGL,[]}),
+    {Return, State}.
+
+
+%%%-----------------------------------------------------------------
+%%% HELP FUNCTIONS
+%%%-----------------------------------------------------------------
+
+identify(Func) ->
+    ct:pal("********** THIS IS ~w on ~w", [Func, self()]),
+    ok.
+
+find_and_kill() ->
+    find_and_kill(procs).
+
+find_and_kill(procs) ->
+    {Procs,SharedGL,_ParallelGLs} = ct:remaining_test_procs(),
+    ct:pal("Remaining test processes = ~p", [pi(Procs)]),
+    [pkill(P, kill) || {P,_GL} <- Procs],
+    SharedGL;
+
+find_and_kill(procs_and_gls) ->
+    {Procs,SharedGL,GLs} = ct:remaining_test_procs(),
+    ct:pal("Remaining test processes = ~p", [pi(Procs)]),
+    [pkill(P, kill) || {P,_GL} <- Procs],
+    ct:pal("Remaining group leaders = ~p", [pi(GLs)]),
+    [pkill(GL, kill) || GL <- GLs, GL /= SharedGL],
+    SharedGL.
+
+find_and_kill(proc, ProcGL) ->
+    {Procs,SharedGL,GLs} = ct:remaining_test_procs(),
+    ct:pal("Remaining test processes = ~p", [pi(Procs++GLs)]),
+    [pkill(P, kill) || {P,GL} <- Procs, GL == ProcGL],
+    SharedGL.
+
+pi([{P,_GL}|Ps]) ->
+    pi([P|Ps]);
+pi([P|Ps]) ->
+    case node() == node(P) of
+        true ->
+            {_,GL} = process_info(P,group_leader),
+            {_,CF} = process_info(P,current_function),
+            {_,IC} = process_info(P,initial_call),
+            {_,D} = process_info(P,dictionary),
+            Shared = test_server_io:get_gl(true),
+            User = whereis(user),
+            if (GL /= P) and (GL /= Shared) and (GL /= User) ->
+                    [{P,GL,CF,IC,D} | pi([GL|Ps])];
+               true ->
+                    [{P,GL,CF,IC,D} | pi(Ps)]
+            end;
+        false ->
+            pi(Ps)
+    end;
+pi([]) ->
+    [].
+
+do_until(Fun, Until) ->
+    io:format("Will do until ~p~n", [Until]),
+    do_until(Fun, Until, 1000).
+
+do_until(_, Until, 0) ->
+    io:format("Couldn't get ~p~n", [Until]),
+    exit({not_reached,Until});
+
+do_until(Fun, Until, N) ->
+    case Fun() of
+        Until ->
+            ok;
+        _Tmp ->
+            do_until(Fun, Until, N-1)
+    end.
+
+pkill(P, How) ->
+    ct:pal("KILLING ~w NOW!", [P]),
+    exit(P, How).
+
diff --git a/lib/common_test/test/test_server_test_lib.erl b/lib/common_test/test/test_server_test_lib.erl
index e3d987a2ea..9ee946af0b 100644
--- a/lib/common_test/test/test_server_test_lib.erl
+++ b/lib/common_test/test/test_server_test_lib.erl
@@ -121,7 +121,7 @@ parse_suite(FileName) ->
     end.
 
 fline(Fd) ->
-    case prim_file:read_line(Fd) of
+    case file:read_line(Fd) of
 	eof -> eof;
 	{ok, Line} -> Line
     end.
diff --git a/lib/common_test/vsn.mk b/lib/common_test/vsn.mk
index 7b959ebfe3..96fdc89853 100644
--- a/lib/common_test/vsn.mk
+++ b/lib/common_test/vsn.mk
@@ -1 +1 @@
-COMMON_TEST_VSN = 1.15.2
+COMMON_TEST_VSN = 1.15.3
diff --git a/lib/compiler/doc/src/Makefile b/lib/compiler/doc/src/Makefile
index c6864cb835..13210de040 100644
--- a/lib/compiler/doc/src/Makefile
+++ b/lib/compiler/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 1997-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 include $(ERL_TOP)/make/target.mk
@@ -38,13 +38,12 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
 XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = compile.xml
 
-XML_PART_FILES = part_notes.xml part_notes_history.xml
-XML_CHAPTER_FILES = notes.xml notes_history.xml
+XML_PART_FILES =
+XML_CHAPTER_FILES = notes.xml
 
 BOOK_FILES = book.xml
 
-GIF_FILES = \
-	warning.gif
+GIF_FILES =
 
 XML_FILES = \
 	$(BOOK_FILES) $(XML_CHAPTER_FILES) \
@@ -64,9 +63,9 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE =  $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -86,17 +85,17 @@ man: $(MAN3_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
 	rm -f $(MAN3DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -110,4 +109,3 @@ release_docs_spec: docs
 	$(INSTALL_DATA) $(MAN3DIR)/* "$(RELEASE_PATH)/man/man3"
 
 release_spec:
-
diff --git a/lib/compiler/doc/src/compile.xml b/lib/compiler/doc/src/compile.xml
index b398871ddf..06afc55c07 100644
--- a/lib/compiler/doc/src/compile.xml
+++ b/lib/compiler/doc/src/compile.xml
@@ -233,6 +233,15 @@ module.beam: module.erl \
   header.hrl</code>
           </item>
 
+          <tag><c>makedep_side_effect</c></tag>
+          <item>
+	    <p>The dependecies are created as a side effect to the
+	    normal compilation process. This means that the object
+	    file will also be produced. This option override the
+	    <c>makedep</c> option.
+	    </p>
+	  </item>
+
           <tag><c>{makedep_output, Output}</c></tag>
           <item>
             <p>Writes generated rules to <c>Output</c> instead of the
diff --git a/lib/compiler/doc/src/fascicules.xml b/lib/compiler/doc/src/fascicules.xml
deleted file mode 100644
index fadd37eefb..0000000000
--- a/lib/compiler/doc/src/fascicules.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/compiler/doc/src/note.gif b/lib/compiler/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/compiler/doc/src/note.gif
+++ /dev/null
diff --git a/lib/compiler/doc/src/notes.xml b/lib/compiler/doc/src/notes.xml
index 433fc3b86e..f4a3f9875b 100644
--- a/lib/compiler/doc/src/notes.xml
+++ b/lib/compiler/doc/src/notes.xml
@@ -32,6 +32,22 @@
   <p>This document describes the changes made to the Compiler
     application.</p>
 
+<section><title>Compiler 7.1.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>The '<c>deterministic</c>' option was not recognized
+	    when given in a <c>-compile()</c> attribute in the source
+	    code.</p>
+          <p>
+	    Own Id: OTP-14773 Aux Id: ERL-498 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Compiler 7.1.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -510,6 +526,22 @@
 
 </section>
 
+
+<section><title>Compiler 6.0.3.1</title>
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p>Fail labels on guard BIFs weren't taken into account
+	    during an optimization pass, and a bug in the validation
+	    pass sometimes prevented this from being noticed when a
+	    fault occurred.</p>
+          <p>
+	    Own Id: OTP-14522 Aux Id: ERIERL-48 </p>
+        </item>
+      </list>
+    </section>
+</section>
+
 <section><title>Compiler 6.0.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/compiler/doc/src/part_notes.xml b/lib/compiler/doc/src/part_notes.xml
deleted file mode 100644
index c1f0ff3861..0000000000
--- a/lib/compiler/doc/src/part_notes.xml
+++ /dev/null
@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Compiler Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date>2004-09-07</date>
-    <rev>1.0</rev>
-  </header>
-  <description>
-    <p>The <em>Compiler</em> application compiles Erlang
-      code to byte-code. The highly compact byte-code is executed by
-      the Erlang emulator.</p>
-    <p>For information about older versions, see
-      <url href="part_notes_history_frame.html">Release Notes History</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/compiler/doc/src/part_notes_history.xml b/lib/compiler/doc/src/part_notes_history.xml
deleted file mode 100644
index 4019676b83..0000000000
--- a/lib/compiler/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2006</year>
-      <year>2016</year>
-      <holder>Ericsson AB, All Rights Reserved</holder>
-    </copyright>
-    <legalnotice>
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
- 
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-  The Initial Developer of the Original Code is Ericsson AB.
-    </legalnotice>
-
-    <title>Compiler Release Notes History</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The <em>Compiler</em> application compiles Erlang
-      code to byte-code. The highly compact byte-code is executed by
-      the Erlang emulator.</p>
-  </description>
-  <include file="notes_history"></include>
-</part>
-
diff --git a/lib/compiler/doc/src/user_guide.gif b/lib/compiler/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/compiler/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/compiler/doc/src/warning.gif b/lib/compiler/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/compiler/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/compiler/internal_doc/cerl-notes.md b/lib/compiler/internal_doc/cerl-notes.md
new file mode 100644
index 0000000000..705fe8f42d
--- /dev/null
+++ b/lib/compiler/internal_doc/cerl-notes.md
@@ -0,0 +1,75 @@
+Some notes on the cerl modules
+==============================
+
+Maps in cerl_clauses:match/3
+----------------------------
+
+Not much optimization is done for maps in `cerl_clauses:match/3`.
+
+The reason is that the inliner (`cerl_inline`) was not designed for
+data types that depend on variables bound in the enclosing environment
+(for example, the keys for maps).  If we attempt to extend the
+optimizations for maps similar to the optimizations for the other data
+types, the inliner will crash for certain code.  Here is an example of
+code that would crash the inliner:
+
+     t() ->
+        f(key).
+
+     f(K) ->
+        case #{K => value} of
+          #{key := V} -> V
+        end.
+
+The reason for the crash is that the inliner works in several
+passes and calls `cerl_clauses:match/3` twice.  The inliner will
+assume that the same result will be returned both times, but
+for this example different bindings will be returned.
+
+Here is the rough outline of what happens:
+
+* The first time `cerl_clauses:match/3` will be asked to match the
+pattern `#{K := V}` against `#{key => value}`. It cannot say more
+than that the pattern *may* match.
+
+* Now the inliner will add the bindings to body of the clause (which
+is simply `V`).  In this case, the bindings are still empty, so
+nothing is added.
+
+* The inliner will now do some substitutions and renaming.  The
+variable `K` will be replaced with `key`.
+
+* The next time `cerl_clauses:match/3` is called, it will be asked to
+match the pattern `#{key := V}` against `#{key => value#}`.  In this
+case, there will be a match and the bindings can be extended with
+`{V,value}`.
+
+* The inliner will see that the entire case can be removed.  Only
+the body for the clause needs to be kept.
+
+Thus, after inlining the function `t/0` will look like this:
+
+     t() ->
+        V.
+
+The problem here is that the inliner assumed that the bindings from
+the first and second call to `cer_clauses:match/3` would be the same.
+It used the empty bindings from the first call for the body.
+
+The correct way would be to add the bindings from the second call:
+
+     t() ->
+        let V = value in V.
+
+### How to fix this ###
+
+The inliner will need to call `cerl_clauses:match/3` after doing
+all substitutions and renaming.  It is not clear to me how difficult
+that would be.  I assume that the inliner is written the way it is
+for a good reason.  That means that switching the order things are
+done would lead to correctness and/or performance problems.
+
+### What must also be done to fix this ###
+
+`cerl_inline:make_template/3` must be extended to create a template
+for maps.  That is relatively straightforward.
diff --git a/lib/compiler/src/Makefile b/lib/compiler/src/Makefile
index 9b22e5197b..9e96147787 100644
--- a/lib/compiler/src/Makefile
+++ b/lib/compiler/src/Makefile
@@ -93,16 +93,14 @@ MODULES =  \
 	v3_codegen \
 	v3_core \
 	v3_kernel \
-	v3_kernel_pp \
-	v3_life
+	v3_kernel_pp
 
 BEAM_H = $(wildcard ../priv/beam_h/*.h)
 
 HRL_FILES= \
 	beam_disasm.hrl \
 	core_parse.hrl \
-	v3_kernel.hrl \
-	v3_life.hrl
+	v3_kernel.hrl
 
 YRL_FILE = core_parse.yrl
 
@@ -187,7 +185,7 @@ release_docs_spec:
 # ---------------------------------------------------- 
 
 $(EBIN)/beam_disasm.beam: $(EGEN)/beam_opcodes.hrl beam_disasm.hrl
-$(EBIN)/beam_listing.beam: v3_life.hrl
+$(EBIN)/beam_listing.beam: core_parse.hrl v3_kernel.hrl
 $(EBIN)/beam_validator.beam: beam_disasm.hrl
 $(EBIN)/cerl.beam: core_parse.hrl
 $(EBIN)/compile.beam: core_parse.hrl ../../stdlib/include/erl_compile.hrl
@@ -200,8 +198,7 @@ $(EBIN)/sys_core_dsetel.beam: core_parse.hrl
 $(EBIN)/sys_core_fold.beam: core_parse.hrl
 $(EBIN)/sys_core_fold_lists.beam: core_parse.hrl
 $(EBIN)/sys_core_inline.beam: core_parse.hrl
-$(EBIN)/v3_codegen.beam: v3_life.hrl
+$(EBIN)/v3_codegen.beam: v3_kernel.hrl
 $(EBIN)/v3_core.beam: core_parse.hrl
 $(EBIN)/v3_kernel.beam: core_parse.hrl v3_kernel.hrl
 $(EBIN)/v3_kernel_pp.beam: v3_kernel.hrl
-$(EBIN)/v3_life.beam: v3_kernel.hrl v3_life.hrl
diff --git a/lib/compiler/src/beam_a.erl b/lib/compiler/src/beam_a.erl
index cdb32d5d55..6f09dc4be4 100644
--- a/lib/compiler/src/beam_a.erl
+++ b/lib/compiler/src/beam_a.erl
@@ -42,8 +42,7 @@ function({function,Name,Arity,CLabel,Is0}) ->
 	Is = beam_jump:remove_unused_labels(Is1),
 	{function,Name,Arity,CLabel,Is}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
diff --git a/lib/compiler/src/beam_asm.erl b/lib/compiler/src/beam_asm.erl
index 9ecbb7884c..453e00fce3 100644
--- a/lib/compiler/src/beam_asm.erl
+++ b/lib/compiler/src/beam_asm.erl
@@ -24,7 +24,7 @@
 -export([module/4]).
 -export([encode/2]).
 
--export_type([fail/0,label/0,reg/0,src/0,module_code/0,function_name/0]).
+-export_type([fail/0,label/0,reg/0,reg_num/0,src/0,module_code/0,function_name/0]).
 
 -import(lists, [map/2,member/2,keymember/3,duplicate/2,splitwith/2]).
 -include("beam_opcodes.hrl").
@@ -240,9 +240,7 @@ build_form(Id, Chunks0) when byte_size(Id) =:= 4, is_list(Chunks0) ->
 
 chunk(Id, Contents) when byte_size(Id) =:= 4, is_binary(Contents) ->
     Size = byte_size(Contents),
-    [<<Id/binary,Size:32>>,Contents|pad(Size)];
-chunk(Id, Contents) when is_list(Contents) ->
-    chunk(Id, list_to_binary(Contents)).
+    [<<Id/binary,Size:32>>,Contents|pad(Size)].
 
 %% Build a correctly padded chunk (with a sub-header).
 
diff --git a/lib/compiler/src/beam_block.erl b/lib/compiler/src/beam_block.erl
index 6543e05e20..fe1ce6f60b 100644
--- a/lib/compiler/src/beam_block.erl
+++ b/lib/compiler/src/beam_block.erl
@@ -37,16 +37,16 @@ function({function,Name,Arity,CLabel,Is0}) ->
 	%% Collect basic blocks and optimize them.
 	Is1 = blockify(Is0),
 	Is2 = embed_lines(Is1),
-	Is3 = move_allocates(Is2),
-	Is4 = beam_utils:live_opt(Is3),
-	Is5 = opt_blocks(Is4),
-	Is6 = beam_utils:delete_live_annos(Is5),
-
-	%% Done.
-	{function,Name,Arity,CLabel,Is6}
+        Is3 = beam_utils:anno_defs(Is2),
+        Is4 = move_allocates(Is3),
+        Is5 = beam_utils:live_opt(Is4),
+        Is6 = opt_blocks(Is5),
+        Is = beam_utils:delete_live_annos(Is6),
+
+        %% Done.
+        {function,Name,Arity,CLabel,Is}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
@@ -173,7 +173,7 @@ find_fixpoint(OptFun, Is0) ->
 %%  safe to assume that if x(N) is initialized, then all lower-numbered
 %%  x registers are also initialized.
 %%
-%%  For example, in general it is not safe to transform the following
+%%  For example, we must be careful when transforming the following
 %%  instructions:
 %%
 %%     get_tuple_element x(0) Element => x(1)
@@ -185,13 +185,9 @@ find_fixpoint(OptFun, Is0) ->
 %%     get_tuple_element x(0) Element => x(1)
 %%
 %%  The transformation is safe if and only if x(1) has been
-%%  initialized previously. Unfortunately, beam_reorder may have moved
-%%  a get_tuple_element instruction so that x(1) is not always
-%%  initialized when this code is reached. To find whether or not x(1)
-%%  is initialized, we would need to analyze all code preceding these
-%%  two instructions (across branches). Since we currently don't have
-%%  any practical mechanism for doing that, we will have to
-%%  conservatively assume that the transformation is unsafe.
+%%  initialized previously.  We will use the annotations added by
+%%  beam_utils:anno_defs/1 to determine whether x(a) has been
+%%  initialized.
 
 move_allocates([{block,Bl0}|Is]) ->
     Bl = move_allocates_1(reverse(Bl0), []),
@@ -200,15 +196,20 @@ move_allocates([I|Is]) ->
     [I|move_allocates(Is)];
 move_allocates([]) -> [].
 
+move_allocates_1([{'%def',_}|Is], Acc) ->
+    move_allocates_1(Is, Acc);
 move_allocates_1([I|Is], [{set,[],[],{alloc,Live0,Info}}|Acc]=Acc0) ->
-    case {alloc_may_pass(I),alloc_live_regs(I, Live0)} of
-	{false,_} ->
-	    move_allocates_1(Is, [I|Acc0]);
-	{true,not_possible} ->
-	    move_allocates_1(Is, [I|Acc0]);
-	{true,Live} when is_integer(Live) ->
-	    A = {set,[],[],{alloc,Live,Info}},
-	    move_allocates_1(Is, [A,I|Acc])
+    case alloc_may_pass(I) of
+        false ->
+            move_allocates_1(Is, [I|Acc0]);
+        true ->
+            case alloc_live_regs(I, Is, Live0) of
+                not_possible ->
+                    move_allocates_1(Is, [I|Acc0]);
+                Live when is_integer(Live) ->
+                    A = {set,[],[],{alloc,Live,Info}},
+                    move_allocates_1(Is, [A,I|Acc])
+            end
     end;
 move_allocates_1([I|Is], Acc) ->
     move_allocates_1(Is, [I|Acc]);
@@ -219,11 +220,20 @@ alloc_may_pass({set,_,_,{set_tuple_element,_}}) -> false;
 alloc_may_pass({set,_,_,put_list}) -> false;
 alloc_may_pass({set,_,_,put}) -> false;
 alloc_may_pass({set,_,_,_}) -> true.
-    
+
 %% opt([Instruction]) -> [Instruction]
 %%  Optimize the instruction stream inside a basic block.
 
 opt([{set,[X],[X],move}|Is]) -> opt(Is);
+opt([{set,[X],_,move},{set,[X],_,move}=I|Is]) ->
+    opt([I|Is]);
+opt([{set,[{x,0}],[S1],move}=I1,{set,[D2],[{x,0}],move}|Is]) ->
+    opt([I1,{set,[D2],[S1],move}|Is]);
+opt([{set,[{x,0}],[S1],move}=I1,{set,[D2],[S2],move}|Is0]) when S1 =/= D2 ->
+    %% Place move S x0 at the end of move sequences so that
+    %% loader can merge with the following instruction
+    {Ds,Is} = opt_moves([D2], Is0),
+    [{set,Ds,[S2],move}|opt([I1|Is])];
 opt([{set,_,_,{line,_}}=Line1,
      {set,[D1],[{integer,Idx1},Reg],{bif,element,{f,0}}}=I1,
      {set,_,_,{line,_}}=Line2,
@@ -463,16 +473,34 @@ count_ones(Bits, Acc) ->
 %% Calculate the new number of live registers when we move an allocate
 %% instruction upwards, passing a 'set' instruction.
 
-alloc_live_regs({set,Ds,Ss,_}, Regs0) ->
+alloc_live_regs({set,Ds,Ss,_}, Is, Regs0) ->
     Rset = x_live(Ss, x_dead(Ds, (1 bsl Regs0)-1)),
-    live_regs(0, Rset).
+    Live = live_regs(0, Rset),
+    case ensure_contiguous(Rset, Live) of
+        not_possible ->
+            %% Liveness information (looking forward in the
+            %% instruction stream) can't prove that moving this
+            %% allocation instruction is safe. Now use the annotation
+            %% of defined registers at the beginning of the current
+            %% block to see whether moving would be safe.
+            Def0 = defined_regs(Is, 0),
+            Def = Def0 band ((1 bsl Live) - 1),
+            ensure_contiguous(Rset bor Def, Live);
+        Live ->
+            %% Safe based on liveness information.
+            Live
+    end.
 
 live_regs(N, 0) ->
     N;
-live_regs(N, Regs) when Regs band 1 =:= 1 ->
-    live_regs(N+1, Regs bsr 1);
-live_regs(_, _) ->
-    not_possible.
+live_regs(N, Regs) ->
+    live_regs(N+1, Regs bsr 1).
+
+ensure_contiguous(Regs, Live) ->
+    case (1 bsl Live) - 1 of
+        Regs -> Live;
+        _ -> not_possible
+    end.
 
 x_dead([{x,N}|Rs], Regs) -> x_dead(Rs, Regs band (bnot (1 bsl N)));
 x_dead([_|Rs], Regs) -> x_dead(Rs, Regs);
@@ -481,3 +509,14 @@ x_dead([], Regs) -> Regs.
 x_live([{x,N}|Rs], Regs) -> x_live(Rs, Regs bor (1 bsl N));
 x_live([_|Rs], Regs) -> x_live(Rs, Regs);
 x_live([], Regs) -> Regs.
+
+%% defined_regs(ReversedInstructions) -> RegBitmap.
+%%  Given a reversed instruction stream, determine the
+%%  the registers that are defined.
+
+defined_regs([{'%def',Def}|_], Regs) ->
+    Def bor Regs;
+defined_regs([{set,Ds,_,{alloc,Live,_}}|_], Regs) ->
+    x_live(Ds, Regs bor ((1 bsl Live) - 1));
+defined_regs([{set,Ds,_,_}|Is], Regs) ->
+    defined_regs(Is, x_live(Ds, Regs)).
diff --git a/lib/compiler/src/beam_bs.erl b/lib/compiler/src/beam_bs.erl
index beb055b23d..14cedbb582 100644
--- a/lib/compiler/src/beam_bs.erl
+++ b/lib/compiler/src/beam_bs.erl
@@ -38,8 +38,7 @@ function({function,Name,Arity,CLabel,Is0}, Lc0) ->
 	{Is,Lc} = bsm_opt(Is1, Lc0),
 	{{function,Name,Arity,CLabel,Is},Lc}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
diff --git a/lib/compiler/src/beam_bsm.erl b/lib/compiler/src/beam_bsm.erl
index 9a4e7fb133..9ea5a3eb92 100644
--- a/lib/compiler/src/beam_bsm.erl
+++ b/lib/compiler/src/beam_bsm.erl
@@ -105,8 +105,7 @@ function({function,Name,Arity,Entry,Is}, FIndex) ->
 	D = #btb{f=FIndex,index=Index},
 	{function,Name,Arity,Entry,btb_opt_1(Is, D, [])}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
diff --git a/lib/compiler/src/beam_dead.erl b/lib/compiler/src/beam_dead.erl
index d379fdc4eb..da944f3ce6 100644
--- a/lib/compiler/src/beam_dead.erl
+++ b/lib/compiler/src/beam_dead.erl
@@ -56,8 +56,7 @@ function({function,Name,Arity,CLabel,Is0}, Lc0) ->
 	Is = move_move_into_block(Is3, []),
 	{{function,Name,Arity,CLabel,Is},Lc}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
@@ -272,7 +271,8 @@ backward([{jump,{f,To0}},{move,Src,Reg}=Move|Is], D, Acc) ->
     end;
 backward([{jump,{f,To}}=J|[{bif,Op,{f,BifFail},Ops,Reg}|Is]=Is0], D, Acc) ->
     try replace_comp_op(To, Reg, Op, Ops, D) of
-	I -> backward(Is, D, I++Acc)
+	{Test,Jump} ->
+            backward([Jump,Test|Is], D, Acc)
     catch
 	throw:not_possible ->
 	    case To =:= BifFail of
@@ -446,7 +446,7 @@ prune_redundant([], _) -> [].
 replace_comp_op(To, Reg, Op, Ops, D) ->
     False = comp_op_find_shortcut(To, Reg, {atom,false}, D),
     True = comp_op_find_shortcut(To, Reg, {atom,true}, D),
-    [bif_to_test(Op, Ops, False),{jump,{f,True}}].
+    {bif_to_test(Op, Ops, False),{jump,{f,True}}}.
 
 comp_op_find_shortcut(To0, Reg, Val, D) ->
     case shortcut_select_label(To0, Reg, Val, D) of
@@ -483,15 +483,22 @@ not_possible() -> throw(not_possible).
 %%   F1:  is_eq_exact F2 Reg Lit2          F1: is_eq_exact F2 Reg Lit2
 %%   L2:  ....				   L2:
 %%
-combine_eqs(To, [Reg,{Type,_}=Lit1]=Ops, D, [{label,L1}|_])
-  when Type =:= atom; Type =:= integer ->
+combine_eqs(To, [Reg,{Type,_}=Lit1]=Ops, D, Acc)
+    when Type =:= atom; Type =:= integer ->
+    Next = case Acc of
+               [{label,Lbl}|_] -> Lbl;
+               [{jump,{f,Lbl}}|_] -> Lbl
+           end,
     case beam_utils:code_at(To, D) of
 	[{test,is_eq_exact,{f,F2},[Reg,{Type,_}=Lit2]},
 	 {label,L2}|_] when Lit1 =/= Lit2 ->
-	    {select,select_val,Reg,{f,F2},[Lit1,{f,L1},Lit2,{f,L2}]};
+	    {select,select_val,Reg,{f,F2},[Lit1,{f,Next},Lit2,{f,L2}]};
+	[{test,is_eq_exact,{f,F2},[Reg,{Type,_}=Lit2]},
+	 {jump,{f,L2}}|_] when Lit1 =/= Lit2 ->
+	    {select,select_val,Reg,{f,F2},[Lit1,{f,Next},Lit2,{f,L2}]};
 	[{select,select_val,Reg,{f,F2},[{Type,_}|_]=List0}|_] ->
 	    List = remove_from_list(Lit1, List0),
-	    {select,select_val,Reg,{f,F2},[Lit1,{f,L1}|List]};
+	    {select,select_val,Reg,{f,F2},[Lit1,{f,Next}|List]};
 	_Is ->
 	    {test,is_eq_exact,{f,To},Ops}
 	end;
diff --git a/lib/compiler/src/beam_disasm.erl b/lib/compiler/src/beam_disasm.erl
index 8fd0b36d05..22ba86fa38 100644
--- a/lib/compiler/src/beam_disasm.erl
+++ b/lib/compiler/src/beam_disasm.erl
@@ -163,8 +163,8 @@ pp_instr(I) ->
 
 file(File) ->
     try process_chunks(File)
-    catch error:Reason ->
-	    {error,?MODULE,{internal,{Reason,erlang:get_stacktrace()}}}
+    catch error:Reason:Stack ->
+            {error,?MODULE,{internal,{Reason,Stack}}}
     end.
 
 %%-----------------------------------------------------------------------
@@ -719,42 +719,6 @@ resolve_inst({wait,[Lbl]},_,_,_) ->
     {wait,Lbl};
 resolve_inst({wait_timeout,[Lbl,Int]},_,_,_) ->
     {wait_timeout,Lbl,resolve_arg(Int)};
-resolve_inst({m_plus,Args},_,_,_) ->
-    [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
-    {arithbif,'+',W,[SrcR1,SrcR2],DstR};
-resolve_inst({m_minus,Args},_,_,_) ->
-    [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
-    {arithbif,'-',W,[SrcR1,SrcR2],DstR};
-resolve_inst({m_times,Args},_,_,_) ->
-    [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
-    {arithbif,'*',W,[SrcR1,SrcR2],DstR};
-resolve_inst({m_div,Args},_,_,_) ->
-    [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
-    {arithbif,'/',W,[SrcR1,SrcR2],DstR};
-resolve_inst({int_div,Args},_,_,_) ->
-    [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
-    {arithbif,'div',W,[SrcR1,SrcR2],DstR};
-resolve_inst({int_rem,Args},_,_,_) ->
-    [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
-    {arithbif,'rem',W,[SrcR1,SrcR2],DstR};
-resolve_inst({int_band,Args},_,_,_) ->
-    [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
-    {arithbif,'band',W,[SrcR1,SrcR2],DstR};
-resolve_inst({int_bor,Args},_,_,_) ->
-    [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
-    {arithbif,'bor',W,[SrcR1,SrcR2],DstR};
-resolve_inst({int_bxor,Args},_,_,_) ->
-    [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
-    {arithbif,'bxor',W,[SrcR1,SrcR2],DstR};
-resolve_inst({int_bsl,Args},_,_,_) ->
-    [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
-    {arithbif,'bsl',W,[SrcR1,SrcR2],DstR};
-resolve_inst({int_bsr,Args},_,_,_) ->
-    [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
-    {arithbif,'bsr',W,[SrcR1,SrcR2],DstR};
-resolve_inst({int_bnot,Args},_,_,_) ->
-    [W,SrcR,DstR] = resolve_args(Args),
-    {arithbif,'bnot',W,[SrcR],DstR};
 resolve_inst({is_lt=I,Args0},_,_,_) ->
     [L|Args] = resolve_args(Args0),
     {test,I,L,Args};
@@ -800,9 +764,6 @@ resolve_inst({is_nil=I,Args0},_,_,_) ->
 resolve_inst({is_binary=I,Args0},_,_,_) ->
     [L|Args] = resolve_args(Args0),
     {test,I,L,Args};
-resolve_inst({is_constant=I,Args0},_,_,_) ->
-    [L|Args] = resolve_args(Args0),
-    {test,I,L,Args};
 resolve_inst({is_list=I,Args0},_,_,_) ->
     [L|Args] = resolve_args(Args0),
     {test,I,L,Args};
@@ -840,11 +801,6 @@ resolve_inst({get_tuple_element,[Src,{u,Off},Dst]},_,_,_) ->
     {get_tuple_element,resolve_arg(Src),Off,resolve_arg(Dst)};
 resolve_inst({set_tuple_element,[Src,Dst,{u,Off}]},_,_,_) ->
     {set_tuple_element,resolve_arg(Src),resolve_arg(Dst),Off};
-resolve_inst({put_string,[{u,Len},{u,Off},Dst]},_,Strings,_) ->
-    String = if Len > 0 -> binary_to_list(Strings, Off+1, Off+Len);
-		true -> ""
-	     end,
-    {put_string,Len,{string,String},Dst};
 resolve_inst({put_list,[Src1,Src2,Dst]},_,_,_) ->
     {put_list,resolve_arg(Src1),resolve_arg(Src2),Dst};
 resolve_inst({put_tuple,[{u,Arity},Dst]},_,_,_) ->
@@ -859,9 +815,6 @@ resolve_inst({case_end,[X]},_,_,_) ->
     {case_end,resolve_arg(X)};
 resolve_inst({call_fun,[{u,N}]},_,_,_) ->
     {call_fun,N};
-resolve_inst({make_fun,Args},_,_,Lbls) ->
-    [{f,L},Magic,FreeVars] = resolve_args(Args),
-    {make_fun,lookup(L,Lbls),Magic,FreeVars};
 resolve_inst({is_function=I,Args0},_,_,_) ->
     [L|Args] = resolve_args(Args0),
     {test,I,L,Args};
@@ -870,30 +823,6 @@ resolve_inst({call_ext_only,[{u,N},{u,MFAix}]},Imports,_,_) ->
 %%
 %% Instructions for handling binaries added in R7A & R7B
 %%
-resolve_inst({bs_start_match,[F,Reg]},_,_,_) ->
-    {bs_start_match,F,Reg};
-resolve_inst({bs_get_integer=I,[Lbl,Arg2,{u,N},{u,U},Arg5]},_,_,_) ->
-    [A2,A5] = resolve_args([Arg2,Arg5]),
-    {test,I,Lbl,[A2,N,decode_field_flags(U),A5]};
-resolve_inst({bs_get_float=I,[Lbl,Arg2,{u,N},{u,U},Arg5]},_,_,_) ->
-    [A2,A5] = resolve_args([Arg2,Arg5]),
-    {test,I,Lbl,[A2,N,decode_field_flags(U),A5]};
-resolve_inst({bs_get_binary=I,[Lbl,Arg2,{u,N},{u,U},Arg5]},_,_,_) ->
-    [A2,A5] = resolve_args([Arg2,Arg5]),
-    {test,I,Lbl,[A2,N,decode_field_flags(U),A5]};
-resolve_inst({bs_skip_bits,[Lbl,Arg2,{u,N},{u,U}]},_,_,_) ->
-    A2 = resolve_arg(Arg2),
-    {test,bs_skip_bits,Lbl,[A2,N,decode_field_flags(U)]};
-resolve_inst({bs_test_tail,[F,{u,N}]},_,_,_) ->
-    {test,bs_test_tail,F,[N]};
-resolve_inst({bs_save,[{u,N}]},_,_,_) ->
-    {bs_save,N};
-resolve_inst({bs_restore,[{u,N}]},_,_,_) ->
-    {bs_restore,N};
-resolve_inst({bs_init,[{u,N},{u,U}]},_,_,_) ->
-    {bs_init,N,decode_field_flags(U)};
-resolve_inst({bs_final,[F,X]},_,_,_) ->
-    {bs_final,F,X};
 resolve_inst({bs_put_integer,[Lbl,Arg2,{u,N},{u,U},Arg5]},_,_,_) ->
     [A2,A5] = resolve_args([Arg2,Arg5]),
     {bs_put_integer,Lbl,A2,N,decode_field_flags(U),A5};
@@ -908,8 +837,6 @@ resolve_inst({bs_put_string,[{u,Len},{u,Off}]},_,Strings,_) ->
 		true -> ""
 	     end,
     {bs_put_string,Len,{string,String}};
-resolve_inst({bs_need_buf,[{u,N}]},_,_,_) ->
-    {bs_need_buf,N};
 
 %%
 %% Instructions for handling floating point numbers added in June 2001 (R8).
@@ -961,9 +888,6 @@ resolve_inst({raise,[_Reg1,_Reg2]=Regs},_,_,_) ->
 resolve_inst({bs_init2,[Lbl,Arg2,{u,W},{u,R},{u,F},Arg6]},_,_,_) ->
     [A2,A6] = resolve_args([Arg2,Arg6]),
     {bs_init2,Lbl,A2,W,R,decode_field_flags(F),A6};
-resolve_inst({bs_bits_to_bytes,[Lbl,Arg2,Arg3]},_,_,_) ->
-    [A2,A3] = resolve_args([Arg2,Arg3]),
-    {bs_bits_to_bytes,Lbl,A2,A3};
 resolve_inst({bs_add=I,[Lbl,Arg2,Arg3,Arg4,Arg5]},_,_,_) ->
     [A2,A3,A4,A5] = resolve_args([Arg2,Arg3,Arg4,Arg5]),
     {I,Lbl,[A2,A3,A4],A5};
@@ -1041,12 +965,6 @@ resolve_inst({gc_bif3,Args},Imports,_,_) ->
     {gc_bif,BifName,F,Live,[A1,A2,A3],Reg};
 
 %%
-%% New instructions for creating non-byte aligned binaries.
-%%
-resolve_inst({bs_final2,[X,Y]},_,_,_) ->
-    {bs_final2,X,Y};
-
-%%
 %% R11B-5.
 %% 
 resolve_inst({is_bitstr=I,Args0},_,_,_) ->
@@ -1165,6 +1083,13 @@ resolve_inst({get_map_elements,Args0},_,_,_) ->
     {get_map_elements,FLbl,Src,{list,List}};
 
 %%
+%% OTP 21.
+%%
+
+resolve_inst({build_stacktrace,[]},_,_,_) ->
+    build_stacktrace;
+
+%%
 %% Catches instructions that are not yet handled.
 %%
 resolve_inst(X,_,_,_) -> ?exit({resolve_inst,X}).
diff --git a/lib/compiler/src/beam_disasm.hrl b/lib/compiler/src/beam_disasm.hrl
index d968cd9587..8cc0bcf99b 100644
--- a/lib/compiler/src/beam_disasm.hrl
+++ b/lib/compiler/src/beam_disasm.hrl
@@ -26,7 +26,8 @@
 %%      IT SHOULD BE MOVED TO A FILE THAT DEFINES (AND EXPORTS)
 %%      PROPER TYPES FOR THE SET OF BEAM INSTRUCTIONS.
 %%
--type beam_instr() :: 'bs_init_writable' | 'fclearerror' | 'if_end'
+-type beam_instr() :: 'bs_init_writable' | 'build_stacktrace'
+                    | 'fclearerror' | 'if_end'
                     | 'remove_message' | 'return' | 'send' | 'timeout'
                     | tuple().  %% XXX: Very underspecified - FIX THIS
 
diff --git a/lib/compiler/src/beam_except.erl b/lib/compiler/src/beam_except.erl
index 9801c68ee2..abd39c661d 100644
--- a/lib/compiler/src/beam_except.erl
+++ b/lib/compiler/src/beam_except.erl
@@ -45,8 +45,7 @@ function({function,Name,Arity,CLabel,Is0}) ->
 	Is = function_1(Is0),
 	{function,Name,Arity,CLabel,Is}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
diff --git a/lib/compiler/src/beam_jump.erl b/lib/compiler/src/beam_jump.erl
index 0bcec9ce19..c33de217bd 100644
--- a/lib/compiler/src/beam_jump.erl
+++ b/lib/compiler/src/beam_jump.erl
@@ -336,17 +336,6 @@ opt([{test,_,{f,L}=Lbl,_}=I|[{label,L}|_]=Is], Acc0, St0) ->
             {Acc,St} = opt_useless_loads(Acc0, L, St0),
 	    opt(Is, Acc, St)
     end;
-opt([{test,_,{f,L}=Lbl,_}=I|[{label,L}|_]=Is], Acc0, St0) ->
-    %% Similar to the above, except we have a fall-through rather than jump
-    %%    Test Label Ops
-    %%    label Label
-    case beam_utils:is_pure_test(I) of
-	false ->
-	    opt(Is, [I|Acc0], label_used(Lbl, St0));
-	true ->
-            {Acc,St} = opt_useless_loads(Acc0, L, St0),
-	    opt(Is, Acc, St)
-    end;
 opt([{test,Test0,{f,L}=Lbl,Ops}=I|[{jump,To}|Is]=Is0], Acc, St) ->
     case is_label_defined(Is, L) of
 	false ->
diff --git a/lib/compiler/src/beam_listing.erl b/lib/compiler/src/beam_listing.erl
index 94b47cf568..73c6501fe5 100644
--- a/lib/compiler/src/beam_listing.erl
+++ b/lib/compiler/src/beam_listing.erl
@@ -23,14 +23,13 @@
 
 -include("core_parse.hrl").
 -include("v3_kernel.hrl").
--include("v3_life.hrl").
+-include("beam_disasm.hrl").
 
 -import(lists, [foreach/2]).
 
 -type code() :: cerl:c_module()
               | beam_utils:module_code()
               | #k_mdef{}
-              | {module(),_,_,_}                %v3_life
               | [_].                            %form-based format
 
 -spec module(file:io_device(), code()) -> 'ok'.
@@ -42,13 +41,9 @@ module(File, #k_mdef{}=Kern) ->
     %% This is a kernel module.
     io:put_chars(File, v3_kernel_pp:format(Kern));
     %%io:put_chars(File, io_lib:format("~p~n", [Kern]));
-module(File, {Mod,Exp,Attr,Kern}) ->
-    %% This is output from beam_life (v3).
-    io:fwrite(File, "~w.~n~p.~n~p.~n", [Mod,Exp,Attr]),
-    foreach(fun (F) -> function(File, F) end, Kern);
 module(Stream, {Mod,Exp,Attr,Code,NumLabels}) ->
-    %% This is output from beam_codegen.
-    io:format(Stream, "{module, ~p}.  %% version = ~w\n", 
+    %% This is output from v3_codegen.
+    io:format(Stream, "{module, ~p}.  %% version = ~w\n",
 	      [Mod, beam_opcodes:format_number()]),
     io:format(Stream, "\n{exports, ~p}.\n", [Exp]),
     io:format(Stream, "\n{attributes, ~p}.\n", [Attr]),
@@ -68,60 +63,3 @@ format_asm([{label,L}|Is]) ->
 format_asm([I|Is]) ->
     [io_lib:format("    ~p", [I]),".\n"|format_asm(Is)];
 format_asm([]) -> [].
-
-function(File, {function,Name,Arity,Args,Body,Vdb,_Anno}) ->
-    io:nl(File),
-    io:format(File, "function ~p/~p.\n", [Name,Arity]),
-    io:format(File, " ~p.\n", [Args]),
-    print_vdb(File, Vdb),
-    put(beam_listing_nl, false),
-    nl(File),
-    foreach(fun(F) -> format(File, F, []) end, Body),
-    nl(File),
-    erase(beam_listing_nl).
-
-format(File, #l{ke=Ke,i=I,vdb=Vdb}, Ind) ->
-    nl(File),
-    ind_format(File, Ind, "~p ", [I]),
-    print_vdb(File, Vdb),
-    nl(File),
-    format(File, Ke, Ind);
-format(File, Tuple, Ind) when is_tuple(Tuple) ->
-    ind_format(File, Ind, "{", []),
-    format_list(File, tuple_to_list(Tuple), [$\s|Ind]),
-    ind_format(File, Ind, "}", []);
-format(File, List, Ind) when is_list(List) ->
-    ind_format(File, Ind, "[", []),
-    format_list(File, List, [$\s|Ind]),
-    ind_format(File, Ind, "]", []);
-format(File, F, Ind) ->
-    ind_format(File, Ind, "~p", [F]).
-
-format_list(File, [F], Ind) ->
-    format(File, F, Ind);
-format_list(File, [F|Fs], Ind) ->
-    format(File, F, Ind),
-    ind_format(File, Ind, ",", []),
-    format_list(File, Fs, Ind);
-format_list(_, [], _) -> ok.
-
-
-print_vdb(File, [{Var,F,E}|Vs]) ->
-    io:format(File, "~p:~p..~p ", [Var,F,E]),
-    print_vdb(File, Vs);
-print_vdb(_, []) -> ok.
-
-ind_format(File, Ind, Format, Args) ->
-    case get(beam_listing_nl) of
-	true ->
-	    put(beam_listing_nl, false),
-	    io:put_chars(File, Ind);
-	false -> ok
-    end,
-    io:format(File, Format, Args).
-    
-nl(File) ->
-    case put(beam_listing_nl, true) of
-	true -> ok;
-	false -> io:nl(File)
-    end.
diff --git a/lib/compiler/src/beam_peep.erl b/lib/compiler/src/beam_peep.erl
index 9436c20b36..eb3192fe8f 100644
--- a/lib/compiler/src/beam_peep.erl
+++ b/lib/compiler/src/beam_peep.erl
@@ -41,8 +41,7 @@ function({function,Name,Arity,CLabel,Is0}) ->
 	Is = beam_jump:remove_unused_labels(Is1),
 	{function,Name,Arity,CLabel,Is}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
diff --git a/lib/compiler/src/beam_receive.erl b/lib/compiler/src/beam_receive.erl
index 1403e1e05e..3c8efa577c 100644
--- a/lib/compiler/src/beam_receive.erl
+++ b/lib/compiler/src/beam_receive.erl
@@ -82,8 +82,7 @@ function({function,Name,Arity,Entry,Is}) ->
 	D = beam_utils:index_labels(Is),
 	{function,Name,Arity,Entry,opt(Is, D, [])}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
@@ -207,6 +206,8 @@ opt_update_regs({label,Lbl}, R, L) ->
 	    %% A catch label for a previously seen catch instruction is OK.
 	    {R,L}
     end;
+opt_update_regs({'try',_,{f,Lbl}}, R, L) ->
+    {R,gb_sets:add(Lbl, L)};
 opt_update_regs({try_end,_}, R, L) ->
     {R,L};
 opt_update_regs({line,_}, R, L) ->
diff --git a/lib/compiler/src/beam_record.erl b/lib/compiler/src/beam_record.erl
index 419089b1bc..db1053e48c 100644
--- a/lib/compiler/src/beam_record.erl
+++ b/lib/compiler/src/beam_record.erl
@@ -15,19 +15,12 @@
 %%
 %% %CopyrightEnd%
 %%
-%% File:    beam_record.erl
-%% Author:  Björn-Egil Dahlberg
-%% Created: 2014-09-03
-%%
-
--module(beam_record).
--export([module/2]).
 
 %% Rewrite the instruction stream on tagged tuple tests.
-%% Tagged tuples means a tuple of any arity with an atom as its first element.
-%% Typically records, ok-tuples and error-tuples.
-%% 
-%% from:
+%% Tagged tuples means a tuple of any arity with an atom as its
+%% first element, such as records and error tuples.
+%%
+%% From:
 %%     ...
 %%     {test,is_tuple,Fail,[Src]}.
 %%     {test,test_arity,Fail,[Src,Sz]}.
@@ -36,13 +29,16 @@
 %%     ...
 %%     {test,is_eq_exact,Fail,[Dst,Atom]}.
 %%     ...
-%% to:
+%% To:
 %%     ...
 %%     {test,is_tagged_tuple,Fail,[Src,Sz,Atom]}.
 %%     ...
+%%
 
+-module(beam_record).
+-export([module/2]).
 
--import(lists, [reverse/1]).
+-import(lists, [reverse/1,reverse/2]).
 
 -spec module(beam_utils:module_code(), [compile:option()]) ->
                     {'ok',beam_utils:module_code()}.
@@ -51,56 +47,85 @@ module({Mod,Exp,Attr,Fs0,Lc}, _Opt) ->
     Fs = [function(F) || F <- Fs0],
     {ok,{Mod,Exp,Attr,Fs,Lc}}.
 
-function({function,Name,Arity,CLabel,Is}) ->
+function({function,Name,Arity,CLabel,Is0}) ->
     try
-        Idx = beam_utils:index_labels(Is),
-        {function,Name,Arity,CLabel,rewrite(Is,Idx)}
+        Is1 = beam_utils:anno_defs(Is0),
+        Idx = beam_utils:index_labels(Is1),
+        Is = rewrite(reverse(Is1), Idx),
+        {function,Name,Arity,CLabel,Is}
     catch
-        Class:Error ->
-            Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
             io:fwrite("Function: ~w/~w\n", [Name,Arity]),
             erlang:raise(Class, Error, Stack)
     end.
 
-rewrite(Is,Idx) ->
-    rewrite(Is,Idx,[]).
+rewrite(Is, Idx) ->
+    rewrite(Is, Idx, 0, []).
 
-rewrite([{test,is_tuple,Fail,[Src]}=I1,
-         {test,test_arity,Fail,[Src,N]}=I2|Is],Idx,Acc) ->
-    case is_tagged_tuple(Is,Fail,Src,Idx) of
+rewrite([{test,test_arity,Fail,[Src,N]}=TA,
+         {test,is_tuple,Fail,[Src]}=TT|Is], Idx, Def, Acc0) ->
+    case is_tagged_tuple(Acc0, Def, Fail, Src, Idx) of
         no ->
-            rewrite(Is,Idx,[I2,I1|Acc]);
-        {Atom,[{block,[]}|Is1]} ->
-            rewrite(Is1,Idx,[{test,is_tagged_tuple,Fail,[Src,N,Atom]}|Acc]);
-        {Atom,Is1} ->
-            rewrite(Is1,Idx,[{test,is_tagged_tuple,Fail,[Src,N,Atom]}|Acc])
+            rewrite(Is, Idx, 0, [TT,TA|Acc0]);
+        {yes,Atom,Acc} ->
+            I = {test,is_tagged_tuple,Fail,[Src,N,Atom]},
+            rewrite(Is, Idx, Def, [I|Acc])
     end;
-rewrite([I|Is],Idx,Acc) ->
-    rewrite(Is,Idx,[I|Acc]);
-rewrite([],_,Acc) -> reverse(Acc).
-
-is_tagged_tuple([{block,[{set,[Dst],[Src],{get_tuple_element,0}}=B|Bs]},
-                 {test,is_eq_exact,Fail,[Dst,{atom,_}=Atom]}|Is],Fail,Src,Idx) ->
+rewrite([{block,[{'%def',Def}|Bl]}|Is], Idx, _Def, Acc) ->
+    rewrite(Is, Idx, Def, [{block,Bl}|Acc]);
+rewrite([{label,L}=I|Is], Idx0, Def, Acc) ->
+    Idx = beam_utils:index_label(L, Acc, Idx0),
+    rewrite(Is, Idx, Def, [I|Acc]);
+rewrite([I|Is], Idx, Def, Acc) ->
+    rewrite(Is, Idx, Def, [I|Acc]);
+rewrite([], _, _, Acc) -> Acc.
 
-    %% if Dst is killed in the instruction stream and at fail label,
-    %% we can safely remove get_tuple_element.
-    %%
-    %% if Dst is not killed in the stream, we cannot remove get_tuple_element
-    %% since it is referenced.
-
-    case is_killed(Dst,Is,Fail,Idx) of
-        true  -> {Atom,[{block,Bs}|Is]};
-        false -> {Atom,[{block,[B|Bs]}|Is]}
+is_tagged_tuple([{block,Bl},
+                 {test,is_eq_exact,Fail,[Dst,{atom,_}=Atom]}|Is],
+                Def, Fail, Src, Idx) ->
+    case is_tagged_tuple_1(Bl, Is, Fail, Src, Dst, Idx, Def, []) of
+        no ->
+            no;
+        {yes,[]} ->
+            {yes,Atom,Is};
+        {yes,[_|_]=Block} ->
+            {yes,Atom,[{block,Block}|Is]}
     end;
-is_tagged_tuple([{block,[{set,_,_,_}=B|Bs]},
-                 {test,is_eq_exact,_,_}=I|Is],Fail,Src,Idx) ->
-    case is_tagged_tuple([{block,Bs},I|Is],Fail,Src,Idx) of
-        {Atom,[{block,Bsr}|Isr]} -> {Atom,[{block,[B|Bsr]}|Isr]};
-        no                       -> no
+is_tagged_tuple(_, _, _, _, _) ->
+    no.
+
+is_tagged_tuple_1([{set,[Dst],[Src],{get_tuple_element,0}}=I|Bl],
+                  Is, Fail, Src, Dst, Idx, Def, Acc) ->
+    %% Check usage of Dst to find out whether the get_tuple_element
+    %% is needed.
+    case usage(Dst, Is, Fail, Idx) of
+        killed ->
+            %% Safe to remove the get_tuple_element instruction.
+            {yes,reverse(Acc, Bl)};
+        used ->
+            %% Actively used. Must keep instruction.
+            {yes,reverse(Acc, [I|Bl])};
+        not_used ->
+            %% Not actually used (but must be initialized).
+            case is_defined(Dst, Def) of
+                false ->
+                    %% Dst must be initialized, but the
+                    %% actual value does not matter.
+                    Kill = {set,[Dst],[nil],move},
+                    {yes,reverse(Acc, [Kill|Bl])};
+                true ->
+                    %% The register is previously initialized.
+                    %% We can remove the instruction.
+                    {yes,reverse(Acc, Bl)}
+            end
     end;
-is_tagged_tuple(_Is,_Fail,_Src,_Idx) ->
+is_tagged_tuple_1([I|Bl], Is, Fail, Src, Dst, Idx, Def, Acc) ->
+    is_tagged_tuple_1(Bl, Is, Fail, Src, Dst, Idx, Def, [I|Acc]);
+is_tagged_tuple_1(_, _, _, _, _, _, _, _) ->
     no.
 
-is_killed(Dst,Is,{_,Lbl},Idx) ->
-    beam_utils:is_killed(Dst,Is,Idx) andalso
-        beam_utils:is_killed_at(Dst,Lbl,Idx).
+usage(Dst, Is, Fail, Idx) ->
+    beam_utils:usage(Dst, [{test,is_number,Fail,[nil]}|Is], Idx).
+
+is_defined({x,X}, Def) ->
+    (Def bsr X) band 1 =:= 1.
diff --git a/lib/compiler/src/beam_reorder.erl b/lib/compiler/src/beam_reorder.erl
index 910b7f6b0a..63bb57a1ac 100644
--- a/lib/compiler/src/beam_reorder.erl
+++ b/lib/compiler/src/beam_reorder.erl
@@ -35,8 +35,7 @@ function({function,Name,Arity,CLabel,Is0}) ->
 	Is = reorder(Is0),
 	{function,Name,Arity,CLabel,Is}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
diff --git a/lib/compiler/src/beam_type.erl b/lib/compiler/src/beam_type.erl
index 3d842a6fd3..16d5a36447 100644
--- a/lib/compiler/src/beam_type.erl
+++ b/lib/compiler/src/beam_type.erl
@@ -43,8 +43,7 @@ function({function,Name,Arity,CLabel,Asm0}) ->
 	Asm = beam_utils:delete_live_annos(Asm3),
 	{function,Name,Arity,CLabel,Asm}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
diff --git a/lib/compiler/src/beam_utils.erl b/lib/compiler/src/beam_utils.erl
index a4c65397df..e61d6a43b4 100644
--- a/lib/compiler/src/beam_utils.erl
+++ b/lib/compiler/src/beam_utils.erl
@@ -22,17 +22,20 @@
 
 -module(beam_utils).
 -export([is_killed_block/2,is_killed/3,is_killed_at/3,
-	 is_not_used/3,
+	 is_not_used/3,usage/3,
 	 empty_label_index/0,index_label/3,index_labels/1,replace_labels/4,
 	 code_at/2,bif_to_test/3,is_pure_test/1,
 	 live_opt/1,delete_live_annos/1,combine_heap_needs/2,
-	 split_even/1]).
+         anno_defs/1,
+	 split_even/1
+        ]).
 
 -export_type([code_index/0,module_code/0,instruction/0]).
 
--import(lists, [map/2,member/2,sort/1,reverse/1,splitwith/2]).
+-import(lists, [flatmap/2,map/2,member/2,sort/1,reverse/1,splitwith/2]).
 
--define(is_const(Val), (element(1, Val) =:= integer orelse
+-define(is_const(Val), (Val =:= nil orelse
+                        element(1, Val) =:= integer orelse
                         element(1, Val) =:= float orelse
                         element(1, Val) =:= atom orelse
                         element(1, Val) =:= literal)).
@@ -59,6 +62,23 @@
 	{lbl :: code_index(),            %Label to code index.
 	 res :: result_cache()}).        %Result cache for each label.
 
+%% usage(Register, [Instruction], State) -> killed|not_used|used.
+%%  Determine the usage of Register in the instruction sequence.
+%%  The return value is one of:
+%%
+%%  killed   - The register is not used in any way.
+%%  not_used - The register is referenced only by an allocating instruction
+%%             (the actual value does not matter).
+%%  used     - The register is used (its value do matter).
+
+-spec usage(beam_asm:reg(), [instruction()], code_index()) ->
+  'killed' | 'not_used' | 'used'.
+
+usage(R, Is, D) ->
+    St = #live{lbl=D,res=gb_trees:empty()},
+    {Usage,_} = check_liveness(R, Is, St),
+    Usage.
+
 
 %% is_killed_block(Register, [Instruction]) -> true|false
 %%  Determine whether a register is killed by the instruction sequence inside
@@ -281,16 +301,33 @@ delete_live_annos([]) -> [].
 %% combine_heap_needs(HeapNeed1, HeapNeed2) -> HeapNeed
 %%  Combine the heap need for two allocation instructions.
 
--spec combine_heap_needs(term(), term()) -> term().
+-type heap_need_tag() :: 'floats' | 'words'.
+-type heap_need() :: non_neg_integer() |
+                     {'alloc',[{heap_need_tag(),non_neg_integer()}]}.
+-spec combine_heap_needs(heap_need(), heap_need()) -> heap_need().
 
-combine_heap_needs({alloc,Alloc1}, {alloc,Alloc2}) ->
-    {alloc,combine_alloc_lists(Alloc1, Alloc2)};
-combine_heap_needs({alloc,Alloc}, Words) when is_integer(Words) ->
-    {alloc,combine_alloc_lists(Alloc, [{words,Words}])};
-combine_heap_needs(Words, {alloc,Alloc}) when is_integer(Words) ->
-    {alloc,combine_alloc_lists(Alloc, [{words,Words}])};
 combine_heap_needs(H1, H2) when is_integer(H1), is_integer(H2) ->
-    H1+H2.
+    H1 + H2;
+combine_heap_needs(H1, H2) ->
+    combine_alloc_lists([H1,H2]).
+
+
+%% anno_defs(Instructions) -> Instructions'
+%%  Add {'%def',RegisterBitmap} annotations to the beginning of
+%%  each block.  Iff bit X is set in the the bitmap, it means
+%%  that {x,X} is defined when the block is entered.
+
+-spec anno_defs([instruction()]) -> [instruction()].
+
+anno_defs(Is0) ->
+    {Bef,[Fi|Is1]} =
+	splitwith(fun({func_info,_,_,_}) -> false;
+		     (_) -> true
+		  end, Is0),
+    {func_info,_,_,Arity} = Fi,
+    Regs = init_def_regs(Arity),
+    Is = defs(Is1, Regs, #{}),
+    Bef ++ [Fi|Is].
 
 %% split_even/1
 %% [1,2,3,4,5,6] -> {[1,3,5],[2,4,6]}
@@ -299,7 +336,6 @@ combine_heap_needs(H1, H2) when is_integer(H1), is_integer(H2) ->
 
 split_even(Rs) -> split_even(Rs, [], []).
 
-
 %%%
 %%% Local functions.
 %%%
@@ -317,6 +353,10 @@ check_liveness(R, [{block,Blk}|Is], St0) ->
     case check_liveness_block(R, Blk, St0) of
 	{transparent,St1} ->
 	    check_liveness(R, Is, St1);
+	{alloc_used,St1} ->
+            %% Used by an allocating instruction, but value not referenced.
+            %% Must check the rest of the instructions.
+	    not_used(check_liveness(R, Is, St1));
 	{Other,_}=Res when is_atom(Other) ->
 	    Res
     end;
@@ -375,9 +415,16 @@ check_liveness(R, [{bs_init,_,_,none,Ss,Dst}|Is], St) ->
 check_liveness(R, [{bs_init,_,_,Live,Ss,Dst}|Is], St) ->
     case R of
 	{x,X} ->
-	    case X < Live orelse member(R, Ss) of
-		true -> {used,St};
-		false -> {killed,St}
+            case member(R, Ss) of
+                true ->
+                    {used,St};
+                false ->
+                    if
+                        X < Live ->
+                            not_used(check_liveness(R, Is, St));
+                        true ->
+                            {killed,St}
+                    end
 	    end;
 	{y,_} ->
 	    case member(R, Ss) of
@@ -587,7 +634,7 @@ check_liveness_ret(R, R, St) -> {used,St};
 check_liveness_ret(_, _, St) -> {killed,St}.
 
 %% check_liveness_block(Reg, [Instruction], State) ->
-%%     {killed | not_used | used | transparent,State'}
+%%     {killed | not_used | used | alloc_used | transparent,State'}
 %%  Finds out how Reg is used in the instruction sequence inside a block.
 %%  Returns one of:
 %%    killed - Reg is assigned a new value or killed by an
@@ -595,6 +642,7 @@ check_liveness_ret(_, _, St) -> {killed,St}.
 %%    not_used - The value is not used, but the register is referenced
 %%       e.g. by an allocation instruction
 %%    transparent - Reg is neither used nor killed
+%%    alloc_used - Used only in an allocate instruction
 %%    used - Reg is explicitly used by an instruction
 %%
 %%  '%live' annotations are not allowed.
@@ -608,7 +656,7 @@ check_liveness_block({x,X}=R, [{set,Ds,Ss,{alloc,Live,Op}}|Is], St0) ->
 	true ->
 	    case check_liveness_block_1(R, Ss, Ds, Op, Is, St0) of
 		{killed,St} -> {not_used,St};
-		{transparent,St} -> {not_used,St};
+                {transparent,St} -> {alloc_used,St};
 		{_,_}=Res -> Res
 	    end
     end;
@@ -722,22 +770,18 @@ label(Old, D, Fb) ->
         _ -> Fb(Old)
     end.
 
-%% Help functions for combine_heap_needs.
-
-combine_alloc_lists(Al1, Al2) ->
-    combine_alloc_lists_1(sort(Al1++Al2)).
+%% Help function for combine_heap_needs.
 
-combine_alloc_lists_1([{words,W1},{words,W2}|T])
-  when is_integer(W1), is_integer(W2) ->
-    [{words,W1+W2}|combine_alloc_lists_1(T)];
-combine_alloc_lists_1([{floats,F1},{floats,F2}|T])
-  when is_integer(F1), is_integer(F2) ->
-    [{floats,F1+F2}|combine_alloc_lists_1(T)];
-combine_alloc_lists_1([{words,_}=W|T]) ->
-    [W|combine_alloc_lists_1(T)];
-combine_alloc_lists_1([{floats,_}=F|T]) ->
-    [F|combine_alloc_lists_1(T)];
-combine_alloc_lists_1([]) -> [].
+combine_alloc_lists(Al0) ->
+    Al1 = flatmap(fun(Words) when is_integer(Words) ->
+                         [{words,Words}];
+                    ({alloc,List}) ->
+                         List
+                 end, Al0),
+    Al2 = sofs:relation(Al1),
+    Al3 = sofs:relation_to_family(Al2),
+    Al4 = sofs:to_external(Al3),
+    [{Tag,lists:sum(L)} || {Tag,L} <- Al4].
 
 %% live_opt/4.
 
@@ -780,6 +824,8 @@ live_opt([{block,Bl0}|Is], Regs0, D, Acc) ->
     {Bl,Regs} = live_opt_block(reverse(Bl0), Regs0, D, [Live0]),
     Live = {'%live',live_regs(Regs),Regs},
     live_opt(Is, Regs, D, [{block,[Live|Bl]}|Acc]);
+live_opt([build_stacktrace=I|Is], _, D, Acc) ->
+    live_opt(Is, live_call(1), D, [I|Acc]);
 live_opt([{label,L}=I|Is], Regs, D0, Acc) ->
     D = gb_trees:insert(L, Regs, D0),
     live_opt(Is, Regs, D, [I|Acc]);
@@ -825,8 +871,14 @@ live_opt([{select,_,Src,Fail,List}=I|Is], Regs0, D, Acc) ->
     Regs1 = x_live([Src], Regs0),
     Regs = live_join_labels([Fail|List], D, Regs1),
     live_opt(Is, Regs, D, [I|Acc]);
-live_opt([{try_case,_}=I|Is], _, D, Acc) ->
-    live_opt(Is, live_call(1), D, [I|Acc]);
+live_opt([{try_case,Y}=I|Is], Regs0, D, Acc) ->
+    Regs = live_call(1),
+    case Regs0 of
+        0 ->
+            live_opt(Is, Regs, D, [{try_end,Y}|Acc]);
+        _ ->
+            live_opt(Is, live_call(1), D, [I|Acc])
+    end;
 live_opt([{loop_rec,_Fail,_Dst}=I|Is], _, D, Acc) ->
     live_opt(Is, 0, D, [I|Acc]);
 live_opt([timeout=I|Is], _, D, Acc) ->
@@ -944,3 +996,208 @@ split_even([], Ss, Ds) ->
     {reverse(Ss),reverse(Ds)};
 split_even([S,D|Rs], Ss, Ds) ->
     split_even(Rs, [S|Ss], [D|Ds]).
+
+%%%
+%%% Add annotations for defined registers.
+%%%
+%%% This analysis is done by scanning the instructions in
+%%% execution order.
+%%%
+
+defs([{apply,_}=I|Is], _Regs, D) ->
+    [I|defs(Is, 1, D)];
+defs([{bif,_,{f,Fail},_Src,Dst}=I|Is], Regs0, D) ->
+    Regs = def_regs([Dst], Regs0),
+    [I|defs(Is, Regs, update_regs(Fail, Regs0, D))];
+defs([{block,Block0}|Is], Regs0, D0) ->
+    {Block,Regs,D} = defs_list(Block0, Regs0, D0),
+    [{block,[{'%def',Regs0}|Block]}|defs(Is, Regs, D)];
+defs([{bs_init,{f,L},_,_,_,Dst}=I|Is], Regs0, D) ->
+    Regs = def_regs([Dst], Regs0),
+    [I|defs(Is, Regs, update_regs(L, Regs, D))];
+defs([{bs_put,{f,L},_,_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, update_regs(L, Regs, D))];
+defs([build_stacktrace=I|Is], _Regs, D) ->
+    [I|defs(Is, 1, D)];
+defs([{call,_,_}=I|Is], _Regs, D) ->
+    [I|defs(Is, 1, D)];
+defs([{call_ext,_,{extfunc,M,F,A}}=I|Is], _Regs, D) ->
+    case erl_bifs:is_exit_bif(M, F, A) of
+        false ->
+            [I|defs(Is, 1, D)];
+        true ->
+            [I|defs_unreachable(Is, D)]
+    end;
+defs([{call_ext,_,_}=I|Is], _Regs, D) ->
+    [I|defs(Is, 1, D)];
+defs([{call_fun,_}=I|Is], _Regs, D) ->
+    [I|defs(Is, 1, D)];
+defs([{'catch',_,{f,L}}=I|Is], Regs, D) ->
+    RegsAtLabel = init_def_regs(1),
+    [I|defs(Is, Regs, update_regs(L, RegsAtLabel, D))];
+defs([{catch_end,_}=I|Is], _Regs, D) ->
+    Regs = init_def_regs(1),
+    [I|defs(Is, Regs, D)];
+defs([{gc_bif,_,{f,Fail},Live,_Src,Dst}=I|Is], Regs0, D) ->
+    true = all_defined(Live, Regs0),            %Assertion.
+    Regs = def_regs([Dst], init_def_regs(Live)),
+    [I|defs(Is, Regs, update_regs(Fail, Regs0, D))];
+defs([{get_map_elements,{f,L},_Src,{list,DstList}}=I|Is], Regs0, D) ->
+    {_,Ds} = beam_utils:split_even(DstList),
+    Regs = def_regs(Ds, Regs0),
+    [I|defs(Is, Regs, update_regs(L, Regs0, D))];
+defs([{get_tuple_element,_,_,Dst}=I|Is], Regs0, D) ->
+    Regs = def_regs([Dst], Regs0),
+    [I|defs(Is, Regs, D)];
+defs([{jump,{f,L}}=I|Is], Regs, D) ->
+    [I|defs_unreachable(Is, update_regs(L, Regs, D))];
+defs([{label,L}=I|Is], Regs0, D) ->
+    case D of
+        #{L:=Regs1} ->
+            Regs = Regs0 band Regs1,
+            [I|defs(Is, Regs, D)];
+        #{} ->
+            [I|defs(Is, Regs0, D)]
+    end;
+defs([{loop_rec,{f,L},{x,0}}=I|Is], _Regs, D0) ->
+    RegsAtLabel = init_def_regs(0),
+    D = update_regs(L, RegsAtLabel, D0),
+    [I|defs(Is, init_def_regs(1), D)];
+defs([{loop_rec_end,_}=I|Is], _Regs, D) ->
+    [I|defs(Is, 0, D)];
+defs([{make_fun2,_,_,_,_}=I|Is], _Regs, D) ->
+    [I|defs(Is, 1, D)];
+defs([{move,_,Dst}=I|Is], Regs0, D) ->
+    Regs = def_regs([Dst], Regs0),
+    [I|defs(Is, Regs, D)];
+defs([{put_map,{f,Fail},_,_,Dst,_,_}=I|Is], Regs0, D) ->
+    Regs = def_regs([Dst], Regs0),
+    [I|defs(Is, Regs, update_regs(Fail, Regs0, D))];
+defs([return=I|Is], _Regs, D) ->
+    [I|defs_unreachable(Is, D)];
+defs([{select,_,_Src,Fail,List}=I|Is], Regs, D0) ->
+    D = update_list([Fail|List], Regs, D0),
+    [I|defs_unreachable(Is, D)];
+defs([{test,_,{f,L},_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, update_regs(L, Regs, D))];
+defs([{test,_,{f,L},Live,_,Dst}=I|Is], Regs0, D) ->
+    true = all_defined(Live, Regs0),             %Assertion.
+    Regs = def_regs([Dst], init_def_regs(Live)),
+    [I|defs(Is, Regs, update_regs(L, Regs0, D))];
+defs([{'try',_,{f,L}}=I|Is], Regs, D) ->
+    RegsAtLabel = init_def_regs(3),
+    [I|defs(Is, Regs, update_regs(L, RegsAtLabel, D))];
+defs([{try_case,_}=I|Is], _Regs, D) ->
+    [I|defs(Is, init_def_regs(3), D)];
+defs([{wait,_}=I|Is], _Regs, D) ->
+    [I|defs_unreachable(Is, D)];
+defs([{wait_timeout,_,_}=I|Is], _Regs, D) ->
+    [I|defs(Is, 0, D)];
+
+%% Exceptions.
+defs([{badmatch,_}=I|Is], _Regs, D) ->
+    [I|defs_unreachable(Is, D)];
+defs([{case_end,_}=I|Is], _Regs, D) ->
+    [I|defs_unreachable(Is, D)];
+defs([if_end=I|Is], _Regs, D) ->
+    [I|defs_unreachable(Is, D)];
+defs([{try_case_end,_}=I|Is], _Regs, D) ->
+    [I|defs_unreachable(Is, D)];
+
+%% Neutral instructions
+defs([{bs_context_to_binary,_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([{bs_restore2,_,_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([{bs_save2,_,_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([{deallocate,_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([{kill,_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([{line,_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([{recv_mark,_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([{recv_set,_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([timeout=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([{trim,_,_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([{try_end,_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([{'%',_}=I|Is], Regs, D) ->
+    [I|defs(Is, Regs, D)];
+defs([], _, _) -> [].
+
+defs_unreachable([{label,L}=I|Is], D) ->
+    case D of
+        #{L:=Regs} ->
+            [I|defs(Is, Regs, D)];
+        #{} ->
+            defs_unreachable(Is, D)
+    end;
+defs_unreachable([_|Is], D) ->
+    defs_unreachable(Is, D);
+defs_unreachable([], _D) -> [].
+
+defs_list(Is, Regs, D) ->
+    defs_list(Is, Regs, D, []).
+
+defs_list([{set,Ds,_,{alloc,Live,Info}}=I|Is], Regs0, D0, Acc) ->
+    true = all_defined(Live, Regs0),             %Assertion.
+    D = case Info of
+            {gc_bif,_,{f,Fail}} ->
+                update_regs(Fail, Regs0, D0);
+            {put_map,_,{f,Fail}} ->
+                update_regs(Fail, Regs0, D0);
+            _ ->
+                D0
+        end,
+    Regs = def_regs(Ds, init_def_regs(Live)),
+    defs_list(Is, Regs, D, [I|Acc]);
+defs_list([{set,Ds,_,Info}=I|Is], Regs0, D0, Acc) ->
+    D = case Info of
+            {bif,_,{f,Fail}} ->
+                update_regs(Fail, Regs0, D0);
+            {try_catch,'catch',{f,Fail}} ->
+                update_regs(Fail, init_def_regs(1), D0);
+            {try_catch,'try',{f,Fail}} ->
+                update_regs(Fail, init_def_regs(3), D0);
+            _ ->
+                D0
+        end,
+    Regs = def_regs(Ds, Regs0),
+    defs_list(Is, Regs, D, [I|Acc]);
+defs_list([], Regs, D, Acc) ->
+    {reverse(Acc),Regs,D}.
+
+init_def_regs(Arity) ->
+    (1 bsl Arity) - 1.
+
+def_regs([{x,X}|T], Regs) ->
+    def_regs(T, Regs bor (1 bsl X));
+def_regs([_|T], Regs) ->
+    def_regs(T, Regs);
+def_regs([], Regs) -> Regs.
+
+update_list([{f,L}|T], Regs, D0) ->
+    D = update_regs(L, Regs, D0),
+    update_list(T, Regs, D);
+update_list([_|T], Regs, D) ->
+    update_list(T, Regs, D);
+update_list([], _Regs, D) -> D.
+
+update_regs(L, Regs0, D) ->
+    case D of
+        #{L:=Regs1} ->
+            Regs = Regs0 band Regs1,
+            D#{L:=Regs};
+        #{} ->
+            D#{L=>Regs0}
+    end.
+
+all_defined(Live, Regs) ->
+    All = (1 bsl Live) - 1,
+    Regs band All =:= All.
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl
index be8908dd6b..2ad9747940 100644
--- a/lib/compiler/src/beam_validator.erl
+++ b/lib/compiler/src/beam_validator.erl
@@ -130,9 +130,8 @@ validate_0(Module, [{function,Name,Ar,Entry,Code}|Fs], Ft) ->
 	throw:Error ->
 	    %% Controlled error.
 	    [Error|validate_0(Module, Fs, Ft)];
-	Class:Error ->
+        Class:Error:Stack ->
 	    %% Crash.
-	    Stack = erlang:get_stacktrace(),
 	    io:fwrite("Function: ~w/~w\n", [Name,Ar]),
 	    erlang:raise(Class, Error, Stack)
     end.
@@ -294,6 +293,8 @@ valfun_1({bs_context_to_binary,Ctx}, #vst{current=#st{x=Xs}}=Vst) ->
     end;
 valfun_1(bs_init_writable=I, Vst) ->
     call(I, 1, Vst);
+valfun_1(build_stacktrace=I, Vst) ->
+    call(I, 1, Vst);
 valfun_1({move,{y,_}=Src,{y,_}=Dst}, Vst) ->
     %% The stack trimming optimization may generate a move from an initialized
     %% but unassigned Y register to another Y register.
diff --git a/lib/compiler/src/beam_z.erl b/lib/compiler/src/beam_z.erl
index 787e33c142..1c56b95a9e 100644
--- a/lib/compiler/src/beam_z.erl
+++ b/lib/compiler/src/beam_z.erl
@@ -38,8 +38,7 @@ function({function,Name,Arity,CLabel,Is0}) ->
 	Is = undo_renames(Is0),
 	{function,Name,Arity,CLabel,Is}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
diff --git a/lib/compiler/src/cerl_clauses.erl b/lib/compiler/src/cerl_clauses.erl
index 7d6518c3c6..fa5104c01b 100644
--- a/lib/compiler/src/cerl_clauses.erl
+++ b/lib/compiler/src/cerl_clauses.erl
@@ -353,6 +353,8 @@ match(P, E, Bs) ->
 	map ->
 	    %% The most we can do is to say "definitely no match" if a
 	    %% map pattern is matched against non-map data.
+            %% (Note: See the document internal_doc/cerl-notes.md for
+            %% information why we don't try to do more here.)
 	    case E of
 		any ->
 		    {false, Bs};
diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl
index 1b359d1e59..770aa2c6c1 100644
--- a/lib/compiler/src/compile.erl
+++ b/lib/compiler/src/compile.erl
@@ -203,7 +203,12 @@ expand_opts(Opts0) ->
 	       {_,_,undefined} -> [debug_info|Opts0];
 	       {_,_,_} -> Opts0
 	   end,
-    foldr(fun expand_opt/2, [], Opts).
+    %% iff,unless processing is to complex...
+    Opts1 = case proplists:is_defined(makedep_side_effect,Opts) of
+                true -> proplists:delete(makedep,Opts);
+                false -> Opts
+            end,
+    foldr(fun expand_opt/2, [], Opts1).
 
 expand_opt(basic_validation, Os) ->
     [no_code_generation,to_pp,binary|Os];
@@ -674,6 +679,7 @@ select_list_passes_1([], _, Acc) ->
 standard_passes() ->
     [?pass(transform_module),
 
+     {iff,makedep_side_effect,?pass(makedep_and_output)},
      {iff,makedep,[
 	 ?pass(makedep),
 	 {unless,binary,?pass(makedep_output)}
@@ -733,8 +739,6 @@ kernel_passes() ->
      ?pass(v3_kernel),
      {iff,dkern,{listing,"kernel"}},
      {iff,'to_kernel',{done,"kernel"}},
-     {pass,v3_life},
-     {iff,dlife,{listing,"life"}},
      {pass,v3_codegen},
      {iff,dcg,{listing,"codegen"}}
      | asm_passes()].
@@ -789,8 +793,10 @@ asm_passes() ->
      | binary_passes()].
 
 binary_passes() ->
-    [{native_compile,fun test_native/1,fun native_compile/2},
-     {unless,binary,?pass(save_binary,not_werror)}].
+    [{iff,'to_dis',?pass(to_dis)},
+     {native_compile,fun test_native/1,fun native_compile/2},
+     {unless,binary,?pass(save_binary,not_werror)}
+    ].
 
 %%%
 %%% Compiler passes.
@@ -1128,6 +1134,16 @@ core_lint_module(Code, St) ->
 			      errors=St#compile.errors ++ Es}}
     end.
 
+%% makedep + output and continue
+makedep_and_output(Code0, St) ->
+    {ok,DepCode,St1} = makedep(Code0,St),
+    case makedep_output(DepCode, St1) of
+        {ok,_IgnoreCode,St2} ->
+            {ok,Code0,St2};
+        {error,St2} ->
+            {error,St2}
+    end.
+
 makedep(Code0, #compile{ifile=Ifile,ofile=Ofile,options=Opts}=St) ->
 
     %% Get the target of the Makefile rule.
@@ -1450,16 +1466,16 @@ beam_asm(Code0, #compile{ifile=File,extra_chunks=ExtraChunks,options=CompilerOpt
 	{ok,DebugInfo,Opts0} ->
 	    Opts1 = [O || O <- Opts0, effects_code_generation(O)],
 	    Chunks = [{<<"Dbgi">>, DebugInfo} | ExtraChunks],
-	    CompileInfo = compile_info(File, Opts1),
+	    CompileInfo = compile_info(File, CompilerOpts, Opts1),
 	    {ok,Code} = beam_asm:module(Code0, Chunks, CompileInfo, CompilerOpts),
 	    {ok,Code,St#compile{abstract_code=[]}};
 	{error,Es} ->
 	    {error,St#compile{errors=St#compile.errors ++ [{File,Es}]}}
     end.
 
-compile_info(File, Opts) ->
-    IsSlim = member(slim, Opts),
-    IsDeterministic = member(deterministic, Opts),
+compile_info(File, CompilerOpts, Opts) ->
+    IsSlim = member(slim, CompilerOpts),
+    IsDeterministic = member(deterministic, CompilerOpts),
     Info0 = proplists:get_value(compile_info, Opts, []),
     Info1 =
 	case paranoid_absname(File) of
@@ -1530,15 +1546,14 @@ native_compile_1(Code, St) ->
 		    {error,St#compile{errors=St#compile.errors ++ Es}}
 	    end
     catch
-	Class:R ->
-	    Stk = erlang:get_stacktrace(),
+	Class:R:Stack ->
 	    case IgnoreErrors of
 		true ->
 		    Ws = [{St#compile.ifile,
-			   [{none,?MODULE,{native_crash,R,Stk}}]}],
+			   [{none,?MODULE,{native_crash,R,Stack}}]}],
 		    {ok,St#compile{warnings=St#compile.warnings ++ Ws}};
 		false ->
-		    erlang:raise(Class, R, Stk)
+		    erlang:raise(Class, R, Stack)
 	    end
     end.
 
@@ -1766,6 +1781,21 @@ listing(LFun, Ext, Code, St) ->
 	    {error,St#compile{errors=St#compile.errors ++ Es}}
     end.
 
+to_dis(Code, #compile{module=Module,ofile=Outfile}=St) ->
+    Loaded = code:is_loaded(Module),
+    Sticky = code:is_sticky(Module),
+    _ = [code:unstick_mod(Module) || Sticky],
+
+    {module,Module} = code:load_binary(Module, "", Code),
+    DestDir = filename:dirname(Outfile),
+    DisFile = filename:join(DestDir, atom_to_list(Module) ++ ".dis"),
+    ok = erts_debug:dis_to_file(Module, DisFile),
+
+    %% Restore loaded module
+    _ = [{module, Module} = code:load_file(Module) || Loaded =/= false],
+    [code:stick_mod(Module) || Sticky],
+    {ok,Code,St}.
+
 output_encoding(F, #compile{encoding = none}) ->
     ok = io:setopts(F, [{encoding, epp:default_encoding()}]);
 output_encoding(F, #compile{encoding = Encoding}) ->
@@ -1947,7 +1977,6 @@ pre_load() ->
 	 sys_core_fold,
 	 v3_codegen,
 	 v3_core,
-	 v3_kernel,
-	 v3_life],
+	 v3_kernel],
     _ = code:ensure_modules_loaded(L),
     ok.
diff --git a/lib/compiler/src/compiler.app.src b/lib/compiler/src/compiler.app.src
index 703cf1d1b8..cf32fd251c 100644
--- a/lib/compiler/src/compiler.app.src
+++ b/lib/compiler/src/compiler.app.src
@@ -68,8 +68,7 @@
 	     v3_codegen,
 	     v3_core,
 	     v3_kernel,
-	     v3_kernel_pp,
-	     v3_life
+	     v3_kernel_pp
 	    ]},
   {registered, []},
   {applications, [kernel, stdlib]},
diff --git a/lib/compiler/src/core_lint.erl b/lib/compiler/src/core_lint.erl
index 7d3513c0ba..6e2114be56 100644
--- a/lib/compiler/src/core_lint.erl
+++ b/lib/compiler/src/core_lint.erl
@@ -353,12 +353,6 @@ expr(#c_case{arg=Arg,clauses=Cs}, Def, Rt, St0) ->
     Pc = case_patcount(Cs),
     St1 = body(Arg, Def, Pc, St0),
     clauses(Cs, Def, Pc, Rt, St1);
-expr(#c_receive{clauses=Cs,timeout=#c_literal{val=infinity},
-		action=#c_literal{}},
-     Def, Rt, St) ->
-    %% If the timeout is 'infinity', the after code can never
-    %% be reached. We don't care if the return count is wrong.
-    clauses(Cs, Def, 1, Rt, St);
 expr(#c_receive{clauses=Cs,timeout=T,action=A}, Def, Rt, St0) ->
     St1 = expr(T, Def, 1, St0),
     St2 = body(A, Def, Rt, St1),
diff --git a/lib/compiler/src/genop.tab b/lib/compiler/src/genop.tab
index b5688de339..397e478e1e 100755
--- a/lib/compiler/src/genop.tab
+++ b/lib/compiler/src/genop.tab
@@ -545,3 +545,12 @@ BEAM_FORMAT_NUMBER=0
 ##      Test the arity of Reg and jumps to Lbl if it is not N.
 ##      Test the first element of the tuple and jumps to Lbl if it is not Atom.
 159: is_tagged_tuple/4
+
+# OTP 21
+
+## @spec build_stacktrace
+## @doc  Given the raw stacktrace in x(0), build a cooked stacktrace suitable
+##       for human consumption. Store it in x(0). Destroys all other registers.
+##       Do a garbage collection if necessary to allocate space on the heap
+##       for the result.
+160: build_stacktrace/0
diff --git a/lib/compiler/src/sys_core_alias.erl b/lib/compiler/src/sys_core_alias.erl
index 63e2f7488e..1bce1577d1 100644
--- a/lib/compiler/src/sys_core_alias.erl
+++ b/lib/compiler/src/sys_core_alias.erl
@@ -64,8 +64,7 @@ def({#c_var{name={F,Arity}}=Name,B0}) ->
         erase(new_var_num),
         {Name,B1}
     catch
-        Class:Error ->
-            Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
             io:fwrite("Function: ~w/~w\n", [F,Arity]),
             erlang:raise(Class, Error, Stack)
     end.
diff --git a/lib/compiler/src/sys_core_bsm.erl b/lib/compiler/src/sys_core_bsm.erl
index 3e04cc33df..37e071fafa 100644
--- a/lib/compiler/src/sys_core_bsm.erl
+++ b/lib/compiler/src/sys_core_bsm.erl
@@ -44,8 +44,7 @@ function([{#c_var{name={F,Arity}}=Name,B0}|Fs], FsAcc, Ws0) ->
         {B,Ws} ->
             function(Fs, [{Name,B}|FsAcc], Ws)
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [F,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end;
diff --git a/lib/compiler/src/sys_core_dsetel.erl b/lib/compiler/src/sys_core_dsetel.erl
index bd3eeae238..9e2df69b33 100644
--- a/lib/compiler/src/sys_core_dsetel.erl
+++ b/lib/compiler/src/sys_core_dsetel.erl
@@ -81,8 +81,7 @@ visit_module_1([{Name,F0}|Fs], Env, Acc) ->
 	{F,_} ->
 	    visit_module_1(Fs, Env, [{Name,F}|Acc])
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    #c_var{name={Func,Arity}} = Name,
 	    io:fwrite("Function: ~w/~w\n", [Func,Arity]),
 	    erlang:raise(Class, Error, Stack)
diff --git a/lib/compiler/src/sys_core_fold.erl b/lib/compiler/src/sys_core_fold.erl
index f3f315935a..e28d48acf5 100644
--- a/lib/compiler/src/sys_core_fold.erl
+++ b/lib/compiler/src/sys_core_fold.erl
@@ -125,8 +125,7 @@ function_1({#c_var{name={F,Arity}}=Name,B0}) ->
 			  end, B0, 20),
 	{Name,B}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [F,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
@@ -415,9 +414,20 @@ expr(#c_call{module=M0,name=N0}=Call0, Ctxt, Sub) ->
 	no -> call(Call, M1, N1, Sub);
 	{yes,Seq} -> expr(Seq, Ctxt, Sub)
     end;
+expr(#c_primop{name=#c_literal{val=build_stacktrace}}, effect, _Sub) ->
+    void();
 expr(#c_primop{args=As0}=Prim, _, Sub) ->
     As1 = expr_list(As0, value, Sub),
     Prim#c_primop{args=As1};
+expr(#c_catch{anno=Anno,body=B}, effect, Sub) ->
+    %% When the return value of the 'catch' is ignored, we can replace it
+    %% with a try/catch to avoid building a stack trace when an exception
+    %% occurs.
+    Var = #c_var{name='catch_value'},
+    Evs = [#c_var{name='Class'},#c_var{name='Reason'},#c_var{name='Stk'}],
+    Try = #c_try{anno=Anno,arg=B,vars=[Var],body=Var,
+                 evars=Evs,handler=void()},
+    expr(Try, effect, Sub);
 expr(#c_catch{body=B0}=Catch, _, Sub) ->
     %% We can remove catch if the value is simple
     B1 = body(B0, value, Sub),
@@ -2613,9 +2623,13 @@ delay_build_expr_1(#c_receive{clauses=Cs0,
 			      timeout=Timeout,
 			      action=A0}=Rec, TypeSig) ->
     Cs = delay_build_cs(Cs0, TypeSig),
-    A = case Timeout of
-	    #c_literal{val=infinity} -> A0;
-	    _ -> delay_build_expr(A0, TypeSig)
+    A = case {Timeout,A0} of
+	    {#c_literal{val=infinity},#c_literal{}} ->
+                {_Type,Arity} = TypeSig,
+                Es = lists:duplicate(Arity, A0),
+                core_lib:make_values(Es);
+	    _ ->
+                delay_build_expr(A0, TypeSig)
 	end,
     Rec#c_receive{clauses=Cs,action=A};
 delay_build_expr_1(#c_seq{body=B0}=Seq, TypeSig) ->
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl
index e705aefb96..62c6c54b9f 100644
--- a/lib/compiler/src/v3_codegen.erl
+++ b/lib/compiler/src/v3_codegen.erl
@@ -19,25 +19,6 @@
 %%
 %% Purpose : Code generator for Beam.
 
-%% The following assumptions have been made:
-%%
-%% 1. Matches, i.e. things with {match,M,Ret} wrappers, only return
-%% values; no variables are exported. If the match would have returned
-%% extra variables then these have been transformed to multiple return
-%% values.
-%% 
-%% 2. All BIF's called in guards are gc-safe so there is no need to
-%% put thing on the stack in the guard.  While this would in principle
-%% work it would be difficult to keep track of the stack depth when
-%% trimming.
-%%
-%% The code generation uses variable lifetime information added by
-%% the v3_life module to save variables, allocate registers and 
-%% move registers to the stack when necessary.
-%%
-%% We try to use a consistent variable name scheme throughout.  The
-%% StackReg record is always called Bef,Int<n>,Aft.
-
 -module(v3_codegen).
 
 %% The main interface.
@@ -45,12 +26,14 @@
 
 -import(lists, [member/2,keymember/3,keysort/2,keydelete/3,
 		append/1,flatmap/2,filter/2,foldl/3,foldr/3,mapfoldl/3,
-		sort/1,reverse/1,reverse/2]).
--import(v3_life, [vdb_find/2]).
+		sort/1,reverse/1,reverse/2,map/2]).
+-import(ordsets, [add_element/2,intersection/2,union/2]).
 
-%%-compile([export_all]).
+-include("v3_kernel.hrl").
 
--include("v3_life.hrl").
+%% These are not defined in v3_kernel.hrl.
+get_kanno(Kthing) -> element(2, Kthing).
+set_kanno(Kthing, Anno) -> setelement(2, Kthing, Anno).
 
 %% Main codegen structure.
 -record(cg, {lcount=1,				%Label counter
@@ -61,38 +44,376 @@
 	     functable=#{},	                %Map of local functions: {Name,Arity}=>Label
 	     in_catch=false,			%Inside a catch or not.
 	     need_frame,			%Need a stack frame.
-	     ultimate_failure			%Label for ultimate match failure.
-	    }).			
+	     ultimate_failure,			%Label for ultimate match failure.
+             ctx                                %Match context.
+	    }).
 
 %% Stack/register state record.
 -record(sr, {reg=[],				%Register table
 	     stk=[],				%Stack table
-	     res=[]}).				%Reserved regs: [{reserved,I,V}]
+	     res=[]}).				%Registers to reserve
+
+%% Internal records.
+-record(cg_need_heap, {anno=[] :: term(),
+                       h=0 :: integer()}).
+-record(cg_block, {anno=[] :: term(),
+                   es=[] :: [term()]}).
+
+-type vdb_entry() :: {atom(),non_neg_integer(),non_neg_integer()}.
 
--type life_module() :: {module(),_,_,[_]}.
+-record(l, {i=0 :: non_neg_integer(),           %Op number
+	    vdb=[] :: [vdb_entry()],            %Variable database
+	    a=[] :: [term()]}).                 %Core annotation
 
--spec module(life_module(), [compile:option()]) -> {'ok',beam_asm:module_code()}.
+-spec module(#k_mdef{}, [compile:option()]) -> {'ok',beam_asm:module_code()}.
 
-module({Mod,Exp,Attr,Forms}, _Options) ->
-    {Fs,St} = functions(Forms, {atom,Mod}),
-    {ok,{Mod,Exp,Attr,Fs,St#cg.lcount}}.
+module(#k_mdef{name=Mod,exports=Es,attributes=Attr,body=Forms}, _Opts) ->
+    {Asm,St} = functions(Forms, {atom,Mod}),
+    {ok,{Mod,Es,Attr,Asm,St#cg.lcount}}.
 
 functions(Forms, AtomMod) ->
     mapfoldl(fun (F, St) -> function(F, AtomMod, St) end, #cg{lcount=1}, Forms).
 
-function({function,Name,Arity,Asm0,Vb,Vdb,Anno}, AtomMod, St0) ->
+function(#k_fdef{anno=#k{a=Anno},func=Name,arity=Arity,
+                 vars=As,body=Kb}, AtomMod, St0) ->
     try
-	{Asm,EntryLabel,St} = cg_fun(Vb, Asm0, Vdb, AtomMod,
-				     {Name,Arity}, Anno, St0),
-	Func = {function,Name,Arity,EntryLabel,Asm},
-	{Func,St}
+        #k_match{} = Kb,                   %Assertion.
+
+        %% Try to suppress the stack frame unless it is
+        %% really needed.
+        Body0 = avoid_stack_frame(Kb),
+
+        %% Annotate kernel records with variable usage.
+        Vdb0 = init_vars(As),
+        {Body,_,Vdb} = body(Body0, 1, Vdb0),
+
+        %% Generate the BEAM assembly code.
+        {Asm,EntryLabel,St} = cg_fun(Body, As, Vdb, AtomMod,
+                                     {Name,Arity}, Anno, St0),
+        Func = {function,Name,Arity,EntryLabel,Asm},
+        {Func,St}
+    catch
+        Class:Error:Stack ->
+            io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+            erlang:raise(Class, Error, Stack)
+    end.
+
+
+%% avoid_stack_frame(Kernel) -> Kernel'
+%%  If possible, avoid setting up a stack frame. Functions
+%%  that only do matching, calls to guard BIFs, and tail-recursive
+%%  calls don't need a stack frame.
+
+avoid_stack_frame(#k_match{body=Body}=M) ->
+    try
+        M#k_match{body=avoid_stack_frame_1(Body)}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
-	    io:fwrite("Function: ~w/~w\n", [Name,Arity]),
-	    erlang:raise(Class, Error, Stack)
+        impossible ->
+            M
     end.
 
+avoid_stack_frame_1(#k_alt{first=First0,then=Then0}=Alt) ->
+    First = avoid_stack_frame_1(First0),
+    Then = avoid_stack_frame_1(Then0),
+    Alt#k_alt{first=First,then=Then};
+avoid_stack_frame_1(#k_bif{op=Op}=Bif) ->
+    case Op of
+        #k_internal{} ->
+            %% Most internal BIFs clobber the X registers.
+            throw(impossible);
+        _ ->
+            Bif
+    end;
+avoid_stack_frame_1(#k_break{anno=Anno,args=Args}) ->
+    #k_guard_break{anno=Anno,args=Args};
+avoid_stack_frame_1(#k_guard_break{}=Break) ->
+    Break;
+avoid_stack_frame_1(#k_enter{}=Enter) ->
+    %% Tail-recursive calls don't need a stack frame.
+    Enter;
+avoid_stack_frame_1(#k_guard{clauses=Cs0}=Guard) ->
+    Cs = avoid_stack_frame_list(Cs0),
+    Guard#k_guard{clauses=Cs};
+avoid_stack_frame_1(#k_guard_clause{guard=G0,body=B0}=C) ->
+    G = avoid_stack_frame_1(G0),
+    B = avoid_stack_frame_1(B0),
+    C#k_guard_clause{guard=G,body=B};
+avoid_stack_frame_1(#k_match{anno=A,vars=Vs,body=B0,ret=Ret}) ->
+    %% Use #k_guard_match{} instead to avoid saving the X registers
+    %% to the stack before matching.
+    B = avoid_stack_frame_1(B0),
+    #k_guard_match{anno=A,vars=Vs,body=B,ret=Ret};
+avoid_stack_frame_1(#k_guard_match{body=B0}=M) ->
+    B = avoid_stack_frame_1(B0),
+    M#k_guard_match{body=B};
+avoid_stack_frame_1(#k_protected{arg=Arg0}=Prot) ->
+    Arg = avoid_stack_frame_1(Arg0),
+    Prot#k_protected{arg=Arg};
+avoid_stack_frame_1(#k_put{}=Put) ->
+    Put;
+avoid_stack_frame_1(#k_return{}=Ret) ->
+    Ret;
+avoid_stack_frame_1(#k_select{var=#k_var{anno=Vanno},types=Types0}=Select) ->
+    case member(reuse_for_context, Vanno) of
+        false ->
+            Types = avoid_stack_frame_list(Types0),
+            Select#k_select{types=Types};
+        true ->
+            %% Including binary patterns that overwrite the register containing
+            %% the binary with the match context may not be safe. For example,
+            %% bs_match_SUITE:bin_tail_e/1 with inlining will be rejected by
+            %% beam_validator.
+            %%
+            %% Essentially the following code is produced:
+            %%
+            %% bs_match {x,0} => {x,0}
+            %% ...
+            %% bs_match {x,0} => {x,1}  %% ILLEGAL
+            %%
+            %% A bs_match instruction will only accept a match context as the
+            %% source operand if the source and destination registers are the
+            %% the same (as in the first bs_match instruction above).
+            %% The second bs_match instruction is therefore illegal.
+            %%
+            %% This situation is avoided if there is a stack frame:
+            %%
+            %% move {x,0} => {y,0}
+            %% bs_match {x,0} => {x,0}
+            %% ...
+            %% bs_match {y,0} => {x,1}  %% LEGAL
+            %%
+            throw(impossible)
+    end;
+avoid_stack_frame_1(#k_seq{arg=A0,body=B0}=Seq) ->
+    A = avoid_stack_frame_1(A0),
+    B = avoid_stack_frame_1(B0),
+    Seq#k_seq{arg=A,body=B};
+avoid_stack_frame_1(#k_test{}=Test) ->
+    Test;
+avoid_stack_frame_1(#k_type_clause{values=Values0}=TC) ->
+    Values = avoid_stack_frame_list(Values0),
+    TC#k_type_clause{values=Values};
+avoid_stack_frame_1(#k_val_clause{body=B0}=VC) ->
+    B = avoid_stack_frame_1(B0),
+    VC#k_val_clause{body=B};
+avoid_stack_frame_1(_Body) ->
+    throw(impossible).
+
+avoid_stack_frame_list([H|T]) ->
+    [avoid_stack_frame_1(H)|avoid_stack_frame_list(T)];
+avoid_stack_frame_list([]) -> [].
+
+
+%% This pass creates beam format annotated with variable lifetime
+%% information.  Each thing is given an index and for each variable we
+%% store the first and last index for its occurrence.  The variable
+%% database, VDB, attached to each thing is only relevant internally
+%% for that thing.
+%%
+%% For nested things like matches the numbering continues locally and
+%% the VDB for that thing refers to the variable usage within that
+%% thing.  Variables which live through a such a thing are internally
+%% given a very large last index.  Internally the indexes continue
+%% after the index of that thing.  This creates no problems as the
+%% internal variable info never escapes and externally we only see
+%% variable which are alive both before or after.
+%%
+%% This means that variables never "escape" from a thing and the only
+%% way to get values from a thing is to "return" them, with 'break' or
+%% 'return'.  Externally these values become the return values of the
+%% thing.  This is no real limitation as most nested things have
+%% multiple threads so working out a common best variable usage is
+%% difficult.
+
+%% body(Kbody, I, Vdb) -> {[Expr],MaxI,Vdb}.
+%%  Handle a body.
+
+body(#k_seq{arg=Ke,body=Kb}, I, Vdb0) ->
+    %%ok = io:fwrite("life ~w:~p~n", [?LINE,{Ke,I,Vdb0}]),
+    A = get_kanno(Ke),
+    Vdb1 = use_vars(union(A#k.us, A#k.ns), I, Vdb0),
+    {Es,MaxI,Vdb2} = body(Kb, I+1, Vdb1),
+    E = expr(Ke, I, Vdb2),
+    {[E|Es],MaxI,Vdb2};
+body(Ke, I, Vdb0) ->
+    %%ok = io:fwrite("life ~w:~p~n", [?LINE,{Ke,I,Vdb0}]),
+    A = get_kanno(Ke),
+    Vdb1 = use_vars(union(A#k.us, A#k.ns), I, Vdb0),
+    E = expr(Ke, I, Vdb1),
+    {[E],I,Vdb1}.
+
+%% expr(Kexpr, I, Vdb) -> Expr.
+
+expr(#k_test{anno=A}=Test, I, _Vdb) ->
+    Test#k_test{anno=#l{i=I,a=A#k.a}};
+expr(#k_call{anno=A}=Call, I, _Vdb) ->
+    Call#k_call{anno=#l{i=I,a=A#k.a}};
+expr(#k_enter{anno=A}=Enter, I, _Vdb) ->
+    Enter#k_enter{anno=#l{i=I,a=A#k.a}};
+expr(#k_bif{anno=A}=Bif, I, _Vdb) ->
+    Bif#k_bif{anno=#l{i=I,a=A#k.a}};
+expr(#k_match{anno=A,body=Kb,ret=Rs}, I, Vdb) ->
+    %% Work out imported variables which need to be locked.
+    Mdb = vdb_sub(I, I+1, Vdb),
+    M = match(Kb, A#k.us, I+1, Mdb),
+    L = #l{i=I,vdb=use_vars(A#k.us, I+1, Mdb),a=A#k.a},
+    #k_match{anno=L,body=M,ret=Rs};
+expr(#k_guard_match{anno=A,body=Kb,ret=Rs}, I, Vdb) ->
+    %% Work out imported variables which need to be locked.
+    Mdb = vdb_sub(I, I+1, Vdb),
+    M = match(Kb, A#k.us, I+1, Mdb),
+    L = #l{i=I,vdb=use_vars(A#k.us, I+1, Mdb),a=A#k.a},
+    #k_guard_match{anno=L,body=M,ret=Rs};
+expr(#k_protected{}=Protected, I, Vdb) ->
+    protected(Protected, I, Vdb);
+expr(#k_try{anno=A,arg=Ka,vars=Vs,body=Kb,evars=Evs,handler=Kh}=Try, I, Vdb) ->
+    %% Lock variables that are alive before the catch and used afterwards.
+    %% Don't lock variables that are only used inside the try.
+    Tdb0 = vdb_sub(I, I+1, Vdb),
+    %% This is the tricky bit. Lock variables in Arg that are used in
+    %% the body and handler. Add try tag 'variable'.
+    Ab = get_kanno(Kb),
+    Ah = get_kanno(Kh),
+    Tdb1 = use_vars(union(Ab#k.us, Ah#k.us), I+3, Tdb0),
+    Tdb2 = vdb_sub(I, I+2, Tdb1),
+    Vnames = fun (Kvar) -> Kvar#k_var.name end,	%Get the variable names
+    {Aes,_,Adb} = body(Ka, I+2, add_var({catch_tag,I+1}, I+1, locked, Tdb2)),
+    {Bes,_,Bdb} = body(Kb, I+4, new_vars(sort(map(Vnames, Vs)), I+3, Tdb2)),
+    {Hes,_,Hdb} = body(Kh, I+4, new_vars(sort(map(Vnames, Evs)), I+3, Tdb2)),
+    L = #l{i=I,vdb=Tdb1,a=A#k.a},
+    Try#k_try{anno=L,
+              arg=#cg_block{es=Aes,anno=#l{i=I+1,vdb=Adb,a=[]}},
+              vars=Vs,body=#cg_block{es=Bes,anno=#l{i=I+3,vdb=Bdb,a=[]}},
+              evars=Evs,handler=#cg_block{es=Hes,anno=#l{i=I+3,vdb=Hdb,a=[]}}};
+expr(#k_try_enter{anno=A,arg=Ka,vars=Vs,body=Kb,evars=Evs,handler=Kh}, I, Vdb) ->
+    %% Lock variables that are alive before the catch and used afterwards.
+    %% Don't lock variables that are only used inside the try.
+    Tdb0 = vdb_sub(I, I+1, Vdb),
+    %% This is the tricky bit. Lock variables in Arg that are used in
+    %% the body and handler. Add try tag 'variable'.
+    Ab = get_kanno(Kb),
+    Ah = get_kanno(Kh),
+    Tdb1 = use_vars(union(Ab#k.us, Ah#k.us), I+3, Tdb0),
+    Tdb2 = vdb_sub(I, I+2, Tdb1),
+    Vnames = fun (Kvar) -> Kvar#k_var.name end,	%Get the variable names
+    {Aes,_,Adb} = body(Ka, I+2, add_var({catch_tag,I+1}, I+1, 1000000, Tdb2)),
+    {Bes,_,Bdb} = body(Kb, I+4, new_vars(sort(map(Vnames, Vs)), I+3, Tdb2)),
+    {Hes,_,Hdb} = body(Kh, I+4, new_vars(sort(map(Vnames, Evs)), I+3, Tdb2)),
+    L = #l{i=I,vdb=Tdb1,a=A#k.a},
+    #k_try_enter{anno=L,
+                 arg=#cg_block{es=Aes,anno=#l{i=I+1,vdb=Adb,a=[]}},
+                 vars=Vs,body=#cg_block{es=Bes,anno=#l{i=I+3,vdb=Bdb,a=[]}},
+                 evars=Evs,handler=#cg_block{es=Hes,anno=#l{i=I+3,vdb=Hdb,a=[]}}};
+expr(#k_catch{anno=A,body=Kb}=Catch, I, Vdb) ->
+    %% Lock variables that are alive before the catch and used afterwards.
+    %% Don't lock variables that are only used inside the catch.
+    %% Add catch tag 'variable'.
+    Cdb0 = vdb_sub(I, I+1, Vdb),
+    {Es,_,Cdb1} = body(Kb, I+1, add_var({catch_tag,I}, I, locked, Cdb0)),
+    L = #l{i=I,vdb=Cdb1,a=A#k.a},
+    Catch#k_catch{anno=L,body=#cg_block{es=Es}};
+expr(#k_receive{anno=A,var=V,body=Kb,action=Ka}=Recv, I, Vdb) ->
+    %% Work out imported variables which need to be locked.
+    Rdb = vdb_sub(I, I+1, Vdb),
+    M = match(Kb, add_element(V#k_var.name, A#k.us), I+1,
+              new_vars([V#k_var.name], I, Rdb)),
+    {Tes,_,Adb} = body(Ka, I+1, Rdb),
+    Le = #l{i=I,vdb=use_vars(A#k.us, I+1, Vdb),a=A#k.a},
+    Recv#k_receive{anno=Le,body=M,
+                   action=#cg_block{anno=#l{i=I+1,vdb=Adb,a=[]},es=Tes}};
+expr(#k_receive_accept{anno=A}, I, _Vdb) ->
+    #k_receive_accept{anno=#l{i=I,a=A#k.a}};
+expr(#k_receive_next{anno=A}, I, _Vdb) ->
+    #k_receive_next{anno=#l{i=I,a=A#k.a}};
+expr(#k_put{anno=A}=Put, I, _Vdb) ->
+    Put#k_put{anno=#l{i=I,a=A#k.a}};
+expr(#k_break{anno=A}=Break, I, _Vdb) ->
+    Break#k_break{anno=#l{i=I,a=A#k.a}};
+expr(#k_guard_break{anno=A}=Break, I, _Vdb) ->
+    Break#k_guard_break{anno=#l{i=I,a=A#k.a}};
+expr(#k_return{anno=A}=Ret, I, _Vdb) ->
+    Ret#k_return{anno=#l{i=I,a=A#k.a}}.
+
+%% protected(Kprotected, I, Vdb) -> Protected.
+%%  Only used in guards.
+
+protected(#k_protected{anno=A,arg=Ts}=Prot, I, Vdb) ->
+    %% Lock variables that are alive before try and used afterwards.
+    %% Don't lock variables that are only used inside the protected
+    %% expression.
+    Pdb0 = vdb_sub(I, I+1, Vdb),
+    {T,MaxI,Pdb1} = body(Ts, I+1, Pdb0),
+    Pdb2 = use_vars(A#k.ns, MaxI+1, Pdb1),	%Save "return" values
+    Prot#k_protected{arg=T,anno=#l{i=I,a=A#k.a,vdb=Pdb2}}.
+
+%% match(Kexpr, [LockVar], I, Vdb) -> Expr.
+%%  Convert match tree to old format.
+
+match(#k_alt{anno=A,first=Kf,then=Kt}, Ls, I, Vdb0) ->
+    Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
+    F = match(Kf, Ls, I+1, Vdb1),
+    T = match(Kt, Ls, I+1, Vdb1),
+    #k_alt{anno=[],first=F,then=T};
+match(#k_select{anno=A,types=Kts}=Select, Ls, I, Vdb0) ->
+    Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
+    Ts = [type_clause(Tc, Ls, I+1, Vdb1) || Tc <- Kts],
+    Select#k_select{anno=[],types=Ts};
+match(#k_guard{anno=A,clauses=Kcs}, Ls, I, Vdb0) ->
+    Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
+    Cs = [guard_clause(G, Ls, I+1, Vdb1) || G <- Kcs],
+    #k_guard{anno=[],clauses=Cs};
+match(Other, Ls, I, Vdb0) ->
+    Vdb1 = use_vars(Ls, I, Vdb0),
+    {B,_,Vdb2} = body(Other, I+1, Vdb1),
+    Le = #l{i=I,vdb=Vdb2,a=[]},
+    #cg_block{anno=Le,es=B}.
+
+type_clause(#k_type_clause{anno=A,type=T,values=Kvs}, Ls, I, Vdb0) ->
+    %%ok = io:format("life ~w: ~p~n", [?LINE,{T,Kvs}]),
+    Vdb1 = use_vars(union(A#k.us, Ls), I+1, Vdb0),
+    Vs = [val_clause(Vc, Ls, I+1, Vdb1) || Vc <- Kvs],
+    #k_type_clause{anno=[],type=T,values=Vs}.
+
+val_clause(#k_val_clause{anno=A,val=V,body=Kb}, Ls0, I, Vdb0) ->
+    New = (get_kanno(V))#k.ns,
+    Bus = (get_kanno(Kb))#k.us,
+    %%ok = io:format("Ls0 = ~p, Used=~p\n  New=~p, Bus=~p\n", [Ls0,Used,New,Bus]),
+    Ls1 = union(intersection(New, Bus), Ls0),	%Lock for safety
+    Vdb1 = use_vars(union(A#k.us, Ls1), I+1, new_vars(New, I, Vdb0)),
+    B = match(Kb, Ls1, I+1, Vdb1),
+    Le = #l{i=I,vdb=use_vars(Bus, I+1, Vdb1),a=A#k.a},
+    #k_val_clause{anno=Le,val=V,body=B}.
+
+guard_clause(#k_guard_clause{anno=A,guard=Kg,body=Kb}, Ls, I, Vdb0) ->
+    Vdb1 = use_vars(union(A#k.us, Ls), I+2, Vdb0),
+    Gdb = vdb_sub(I+1, I+2, Vdb1),
+    G = protected(Kg, I+1, Gdb),
+    B = match(Kb, Ls, I+2, Vdb1),
+    Le = #l{i=I,vdb=use_vars((get_kanno(Kg))#k.us, I+2, Vdb1),a=A#k.a},
+    #k_guard_clause{anno=Le,guard=G,body=B}.
+
+
+%% Here follows the code generator pass.
+%%
+%% The following assumptions have been made:
+%%
+%% 1. Matches, i.e. things with {match,M,Ret} wrappers, only return
+%% values; no variables are exported. If the match would have returned
+%% extra variables then these have been transformed to multiple return
+%% values.
+%%
+%% 2. All BIF's called in guards are gc-safe so there is no need to
+%% put thing on the stack in the guard.  While this would in principle
+%% work it would be difficult to keep track of the stack depth when
+%% trimming.
+%%
+%% The code generation uses variable lifetime information added by
+%% the previous pass to save variables, allocate registers and
+%% move registers to the stack when necessary.
+%%
+%% We try to use a consistent variable name scheme throughout.  The
+%% StackReg record is always called Bef,Int<n>,Aft.
+
 %% cg_fun([Lkexpr], [HeadVar], Vdb, State) -> {[Ainstr],State}
 
 cg_fun(Les, Hvs, Vdb, AtomMod, NameArity, Anno, St0) ->
@@ -114,18 +435,18 @@ cg_fun(Les, Hvs, Vdb, AtomMod, NameArity, Anno, St0) ->
     %% Note that and 'if_end' instruction does not need any
     %% live x registers, so it will always be safe to jump to
     %% it. (We never ever expect the jump to be taken, and in
-    %% must functions there will never be any references to
+    %% most functions there will never be any references to
     %% the label in the first place.)
     %%
 
     {UltimateMatchFail,St3} = new_label(St2),
 
     %% Create initial stack/register state, clear unused arguments.
-    Bef = clear_dead(#sr{reg=foldl(fun ({var,V}, Reg) ->
+    Bef = clear_dead(#sr{reg=foldl(fun (#k_var{name=V}, Reg) ->
 					   put_reg(V, Reg)
 				   end, [], Hvs),
 			 stk=[]}, 0, Vdb),
-    {B,_Aft,St} = cg_list(Les, 0, Vdb, Bef,
+    {B,_Aft,St} = cg_list(Les, Vdb, Bef,
 			  St3#cg{bfail=0,
 				 ultimate_failure=UltimateMatchFail,
 				 is_top_block=true}),
@@ -136,66 +457,64 @@ cg_fun(Les, Hvs, Vdb, AtomMod, NameArity, Anno, St0) ->
 
 %% cg(Lkexpr, Vdb, StackReg, State) -> {[Ainstr],StackReg,State}.
 %%  Generate code for a kexpr.
-%%  Split function into two steps for clarity, not efficiency.
-
-cg(Le, Vdb, Bef, St) ->
-    cg(Le#l.ke, Le, Vdb, Bef, St).
 
-cg({block,Es}, Le, Vdb, Bef, St) ->
+cg(#cg_block{anno=Le,es=Es}, Vdb, Bef, St) ->
     block_cg(Es, Le, Vdb, Bef, St);
-cg({match,M,Rs}, Le, Vdb, Bef, St) ->
+cg(#k_match{anno=Le,body=M,ret=Rs}, Vdb, Bef, St) ->
     match_cg(M, Rs, Le, Vdb, Bef, St);
-cg({guard_match,M,Rs}, Le, Vdb, Bef, St) ->
+cg(#k_guard_match{anno=Le,body=M,ret=Rs}, Vdb, Bef, St) ->
     guard_match_cg(M, Rs, Le, Vdb, Bef, St);
-cg({call,Func,As,Rs}, Le, Vdb, Bef, St) ->
+cg(#k_call{anno=Le,op=Func,args=As,ret=Rs}, Vdb, Bef, St) ->
     call_cg(Func, As, Rs, Le, Vdb, Bef, St);
-cg({enter,Func,As}, Le, Vdb, Bef, St) ->
+cg(#k_enter{anno=Le,op=Func,args=As}, Vdb, Bef, St) ->
     enter_cg(Func, As, Le, Vdb, Bef, St);
-cg({bif,Bif,As,Rs}, Le, Vdb, Bef, St) ->
-    bif_cg(Bif, As, Rs, Le, Vdb, Bef, St);
-cg({gc_bif,Bif,As,Rs}, Le, Vdb, Bef, St) ->
-    gc_bif_cg(Bif, As, Rs, Le, Vdb, Bef, St);
-cg({internal,Bif,As,Rs}, Le, Vdb, Bef, St) ->
-    internal_cg(Bif, As, Rs, Le, Vdb, Bef, St);
-cg({receive_loop,Te,Rvar,Rm,Tes,Rs}, Le, Vdb, Bef, St) ->
+cg(#k_bif{anno=Le}=Bif, Vdb, Bef, St) ->
+    bif_cg(Bif, Le, Vdb, Bef, St);
+cg(#k_receive{anno=Le,timeout=Te,var=Rvar,body=Rm,action=Tes,ret=Rs},
+   Vdb, Bef, St) ->
     recv_loop_cg(Te, Rvar, Rm, Tes, Rs, Le, Vdb, Bef, St);
-cg(receive_next, Le, Vdb, Bef, St) ->
+cg(#k_receive_next{anno=Le}, Vdb, Bef, St) ->
     recv_next_cg(Le, Vdb, Bef, St);
-cg(receive_accept, _Le, _Vdb, Bef, St) -> {[remove_message],Bef,St};
-cg({'try',Ta,Vs,Tb,Evs,Th,Rs}, Le, Vdb, Bef, St) ->
+cg(#k_receive_accept{}, _Vdb, Bef, St) ->
+    {[remove_message],Bef,St};
+cg(#k_try{anno=Le,arg=Ta,vars=Vs,body=Tb,evars=Evs,handler=Th,ret=Rs},
+   Vdb, Bef, St) ->
     try_cg(Ta, Vs, Tb, Evs, Th, Rs, Le, Vdb, Bef, St);
-cg({try_enter,Ta,Vs,Tb,Evs,Th}, Le, Vdb, Bef, St) ->
+cg(#k_try_enter{anno=Le,arg=Ta,vars=Vs,body=Tb,evars=Evs,handler=Th},
+   Vdb, Bef, St) ->
     try_enter_cg(Ta, Vs, Tb, Evs, Th, Le, Vdb, Bef, St);
-cg({'catch',Cb,R}, Le, Vdb, Bef, St) ->
+cg(#k_catch{anno=Le,body=Cb,ret=[R]}, Vdb, Bef, St) ->
     catch_cg(Cb, R, Le, Vdb, Bef, St);
-cg({set,Var,Con}, Le, Vdb, Bef, St) ->
-    set_cg(Var, Con, Le, Vdb, Bef, St);
-cg({return,Rs}, Le, Vdb, Bef, St) -> return_cg(Rs, Le, Vdb, Bef, St);
-cg({break,Bs}, Le, Vdb, Bef, St) -> break_cg(Bs, Le, Vdb, Bef, St);
-cg({guard_break,Bs,N}, Le, Vdb, Bef, St) ->
-    guard_break_cg(Bs, N, Le, Vdb, Bef, St);
-cg({need_heap,H}, _Le, _Vdb, Bef, St) ->
+cg(#k_put{anno=Le,arg=Con,ret=Var},  Vdb, Bef, St) ->
+    put_cg(Var, Con, Le, Vdb, Bef, St);
+cg(#k_return{anno=Le,args=Rs}, Vdb, Bef, St) ->
+    return_cg(Rs, Le, Vdb, Bef, St);
+cg(#k_break{anno=Le,args=Bs}, Vdb, Bef, St) ->
+    break_cg(Bs, Le, Vdb, Bef, St);
+cg(#k_guard_break{anno=Le,args=Bs}, Vdb, Bef, St) ->
+    guard_break_cg(Bs, Le, Vdb, Bef, St);
+cg(#cg_need_heap{h=H}, _Vdb, Bef, St) ->
     {[{test_heap,H,max_reg(Bef#sr.reg)}],Bef,St}.
 
 %% cg_list([Kexpr], FirstI, Vdb, StackReg, St) -> {[Ainstr],StackReg,St}.
 
-cg_list(Kes, I, Vdb, Bef, St0) ->
+cg_list(Kes, Vdb, Bef, St0) ->
     {Keis,{Aft,St1}} =
 	flatmapfoldl(fun (Ke, {Inta,Sta}) ->
 			     {Keis,Intb,Stb} = cg(Ke, Vdb, Inta, Sta),
 			     {Keis,{Intb,Stb}}
-		     end, {Bef,St0}, need_heap(Kes, I)),
+		     end, {Bef,St0}, need_heap(Kes)),
     {Keis,Aft,St1}.
 
 %% need_heap([Lkexpr], I, St) -> [Lkexpr].
 %%  Insert need_heap instructions in Kexpr list.  Try to be smart and
 %%  collect them together as much as possible.
 
-need_heap(Kes0, I) ->
+need_heap(Kes0) ->
     {Kes,H} = need_heap_0(reverse(Kes0), 0, []),
 
     %% Prepend need_heap if necessary.
-    need_heap_need(I, H) ++ Kes.
+    need_heap_need(H) ++ Kes.
 
 need_heap_0([Ke|Kes], H0, Acc) ->
     {Ns,H} = need_heap_1(Ke, H0),
@@ -203,27 +522,54 @@ need_heap_0([Ke|Kes], H0, Acc) ->
 need_heap_0([], H, Acc) ->
     {Acc,H}.
 
-need_heap_1(#l{ke={set,_,{binary,_}},i=I}, H) ->
-    {need_heap_need(I, H),0};
-need_heap_1(#l{ke={set,_,{map,_,_,_}},i=I}, H) ->
-    {need_heap_need(I, H),0};
-need_heap_1(#l{ke={set,_,Val}}, H) ->
+need_heap_1(#k_put{arg=#k_binary{}}, H) ->
+    {need_heap_need(H),0};
+need_heap_1(#k_put{arg=#k_map{}}, H) ->
+    {need_heap_need(H),0};
+need_heap_1(#k_put{arg=Val}, H) ->
     %% Just pass through adding to needed heap.
     {[],H + case Val of
-		{cons,_} -> 2;
-		{tuple,Es} -> 1 + length(Es);
+		#k_cons{} -> 2;
+		#k_tuple{es=Es} -> 1 + length(Es);
 		_Other -> 0
 	    end};
-need_heap_1(#l{ke={bif,_Bif,_As,_Rs}}, H) ->
-    {[],H};
-need_heap_1(#l{i=I}, H) ->
+need_heap_1(#k_bif{}=Bif, H) ->
+    case is_gc_bif(Bif) of
+        false ->
+            {[],H};
+        true ->
+            {need_heap_need(H),0}
+    end;
+need_heap_1(_Ke, H) ->
     %% Call or call-like instruction such as set_tuple_element/3.
-    {need_heap_need(I, H),0}.
-
-need_heap_need(_I, 0) -> [];
-need_heap_need(I, H) -> [#l{ke={need_heap,H},i=I}].
-
-%% match_cg(Match, [Ret], Le, Vdb, StackReg, State) ->
+    {need_heap_need(H),0}.
+
+need_heap_need(0) -> [];
+need_heap_need(H) -> [#cg_need_heap{h=H}].
+
+%% is_gc_bif(#k_bif{}) -> true|false.
+%% is_gc_bif(Name, Arity) -> true|false.
+%%  Determines whether the BIF Name/Arity might do a GC.
+
+is_gc_bif(#k_bif{op=#k_remote{name=#k_atom{val=Name}},args=Args}) ->
+    is_gc_bif(Name, length(Args));
+is_gc_bif(#k_bif{op=#k_internal{}}) ->
+    true.
+
+is_gc_bif(hd, 1) -> false;
+is_gc_bif(tl, 1) -> false;
+is_gc_bif(self, 0) -> false;
+is_gc_bif(node, 0) -> false;
+is_gc_bif(node, 1) -> false;
+is_gc_bif(element, 2) -> false;
+is_gc_bif(get, 1) -> false;
+is_gc_bif(tuple_size, 1) -> false;
+is_gc_bif(Bif, Arity) ->
+    not (erl_internal:bool_op(Bif, Arity) orelse
+	 erl_internal:new_type_test(Bif, Arity) orelse
+	 erl_internal:comp_op(Bif, Arity)).
+
+%% match_cg(Matc, [Ret], Le, Vdb, StackReg, State) ->
 %%	{[Ainstr],StackReg,State}.
 %%  Generate code for a match.  First save all variables on the stack
 %%  that are to survive after the match.  We leave saved variables in
@@ -244,7 +590,10 @@ match_cg(M, Rs, Le, Vdb, Bef, St0) ->
 guard_match_cg(M, Rs, Le, Vdb, Bef, St0) ->
     I = Le#l.i,
     {B,St1} = new_label(St0),
-    #cg{bfail=Fail} = St1,
+    Fail = case St0 of
+               #cg{bfail=0,ultimate_failure=Fail0} -> Fail0;
+               #cg{bfail=Fail0} -> Fail0
+           end,
     {Mis,Aft,St2} = match_cg(M, Fail, Bef, St1#cg{break=B}),
     %% Update the register descriptors for the return registers.
     Reg = guard_match_regs(Aft#sr.reg, Rs),
@@ -252,7 +601,7 @@ guard_match_cg(M, Rs, Le, Vdb, Bef, St0) ->
      clear_dead(Aft#sr{reg=Reg}, I, Vdb),
      St2#cg{break=St1#cg.break}}.
 
-guard_match_regs([{I,gbreakvar}|Rs], [{var,V}|Vs]) ->
+guard_match_regs([{I,gbreakvar}|Rs], [#k_var{name=V}|Vs]) ->
     [{I,V}|guard_match_regs(Rs, Vs)];
 guard_match_regs([R|Rs], Vs) ->
     [R|guard_match_regs(Rs, Vs)];
@@ -264,17 +613,14 @@ guard_match_regs([], []) -> [].
 %%  down as each level which uses this takes its own internal Vdb not
 %%  the outer one.
 
-match_cg(Le, Fail, Bef, St) ->
-    match_cg(Le#l.ke, Le, Fail, Bef, St).
-
-match_cg({alt,F,S}, _Le, Fail, Bef, St0) ->
+match_cg(#k_alt{first=F,then=S}, Fail, Bef, St0) ->
     {Tf,St1} = new_label(St0),
     {Fis,Faft,St2} = match_cg(F, Tf, Bef, St1),
     {Sis,Saft,St3} = match_cg(S, Fail, Bef, St2),
     Aft = sr_merge(Faft, Saft),
     {Fis ++ [{label,Tf}] ++ Sis,Aft,St3};
-match_cg({select,{var,Vname}=V,Scs0}, #l{a=Anno}, Fail, Bef, St) ->
-    ReuseForContext = member(reuse_for_context, Anno) andalso
+match_cg(#k_select{var=#k_var{anno=Vanno,name=Vname}=V,types=Scs0}, Fail, Bef, St) ->
+    ReuseForContext = member(reuse_for_context, Vanno) andalso
 	find_reg(Vname, Bef#sr.reg) =/= error,
     Scs = case ReuseForContext of
 	      false -> Scs0;
@@ -283,10 +629,10 @@ match_cg({select,{var,Vname}=V,Scs0}, #l{a=Anno}, Fail, Bef, St) ->
     match_fmf(fun (S, F, Sta) ->
 		      select_cg(S, V, F, Fail, Bef, Sta) end,
 	      Fail, St, Scs);
-match_cg({guard,Gcs}, _Le, Fail, Bef, St) ->
+match_cg(#k_guard{clauses=Gcs}, Fail, Bef, St) ->
     match_fmf(fun (G, F, Sta) -> guard_clause_cg(G, F, Bef, Sta) end,
 	      Fail, St, Gcs);
-match_cg({block,Es}, Le, _Fail, Bef, St) ->
+match_cg(#cg_block{anno=Le,es=Es}, _Fail, Bef, St) ->
     %% Must clear registers and stack of dead variables.
     Int = clear_dead(Bef, Le#l.i, Le#l.vdb),
     block_cg(Es, Le, Int, St).
@@ -294,8 +640,8 @@ match_cg({block,Es}, Le, _Fail, Bef, St) ->
 %% bsm_rename_ctx([Clause], Var) -> [Clause]
 %%  We know from an annotation that the register for a binary can
 %%  be reused for the match context because the two are not truly
-%%  alive at the same time (even though the conservative life time
-%%  information calculated by v3_life says so).
+%%  alive at the same time (even though the life time information
+%%  says so).
 %%
 %%  The easiest way to have those variables share the same register is
 %%  to rename the variable with the shortest life-span (the match
@@ -306,12 +652,14 @@ match_cg({block,Es}, Le, _Fail, Bef, St) ->
 %%  We must also remove all information about the match context
 %%  variable from all life-time information databases (Vdb).
 
-bsm_rename_ctx([#l{ke={type_clause,binary,
-		       [#l{ke={val_clause,{binary,{var,Old}},Ke0}}=L2]}}=L1|Cs], New) ->
+bsm_rename_ctx([#k_type_clause{type=k_binary,values=Vcs}=TC|Cs], New) ->
+    [#k_val_clause{val=#k_binary{segs=#k_var{name=Old}}=Bin,
+                   body=Ke0}=VC0] = Vcs,
     Ke = bsm_rename_ctx(Ke0, Old, New, false),
-    [L1#l{ke={type_clause,binary,
-	      [L2#l{ke={val_clause,{binary,{var,New}},Ke}}]}}|bsm_rename_ctx(Cs, New)];
-bsm_rename_ctx([C|Cs], New) -> 
+    VC = VC0#k_val_clause{val=Bin#k_binary{segs=#k_var{name=New}},
+                          body=Ke},
+    [TC#k_type_clause{values=[VC]}|bsm_rename_ctx(Cs, New)];
+bsm_rename_ctx([C|Cs], New) ->
     [C|bsm_rename_ctx(Cs, New)];
 bsm_rename_ctx([], _) -> [].
 
@@ -321,34 +669,24 @@ bsm_rename_ctx([], _) -> [].
 %%  only complicatate things to recurse into blocks not in a protected
 %%  (the match context variable is not live inside them).
 
-bsm_rename_ctx(#l{ke={select,{var,V},Cs0}}=L, Old, New, InProt) ->
+bsm_rename_ctx(#k_select{var=#k_var{name=V},types=Cs0}=Sel,
+               Old, New, InProt) ->
     Cs = bsm_rename_ctx_list(Cs0, Old, New, InProt),
-    L#l{ke={select,{var,bsm_rename_var(V, Old, New)},Cs}};
-bsm_rename_ctx(#l{ke={type_clause,Type,Cs0}}=L, Old, New, InProt) ->
+    Sel#k_select{var=#k_var{name=bsm_rename_var(V, Old, New)},types=Cs};
+bsm_rename_ctx(#k_type_clause{values=Cs0}=TC, Old, New, InProt) ->
     Cs = bsm_rename_ctx_list(Cs0, Old, New, InProt),
-    L#l{ke={type_clause,Type,Cs}};
-bsm_rename_ctx(#l{ke={val_clause,{bin_end,V},Ke0}}=L, Old, New, InProt) ->
-    Ke = bsm_rename_ctx(Ke0, Old, New, InProt),
-    L#l{ke={val_clause,{bin_end,bsm_rename_var(V, Old, New)},Ke}};
-bsm_rename_ctx(#l{ke={val_clause,{bin_seg,V,Sz,U,Type,Fl,Vs},Ke0}}=L,
-	       Old, New, InProt) ->
-    Ke = bsm_rename_ctx(Ke0, Old, New, InProt),
-    L#l{ke={val_clause,{bin_seg,bsm_rename_var(V, Old, New),Sz,U,Type,Fl,Vs},Ke}};
-bsm_rename_ctx(#l{ke={val_clause,{bin_int,V,Sz,U,Fl,Val,Vs},Ke0}}=L,
-	       Old, New, InProt) ->
+    TC#k_type_clause{values=Cs};
+bsm_rename_ctx(#k_val_clause{body=Ke0}=VC, Old, New, InProt) ->
     Ke = bsm_rename_ctx(Ke0, Old, New, InProt),
-    L#l{ke={val_clause,{bin_int,bsm_rename_var(V, Old, New),Sz,U,Fl,Val,Vs},Ke}};
-bsm_rename_ctx(#l{ke={val_clause,Val,Ke0}}=L, Old, New, InProt) ->
-    Ke = bsm_rename_ctx(Ke0, Old, New, InProt),
-    L#l{ke={val_clause,Val,Ke}};
-bsm_rename_ctx(#l{ke={alt,F0,S0}}=L, Old, New, InProt) ->
+    VC#k_val_clause{body=Ke};
+bsm_rename_ctx(#k_alt{first=F0,then=S0}=Alt, Old, New, InProt) ->
     F = bsm_rename_ctx(F0, Old, New, InProt),
     S = bsm_rename_ctx(S0, Old, New, InProt),
-    L#l{ke={alt,F,S}};
-bsm_rename_ctx(#l{ke={guard,Gcs0}}=L, Old, New, InProt) ->
+    Alt#k_alt{first=F,then=S};
+bsm_rename_ctx(#k_guard{clauses=Gcs0}=Guard, Old, New, InProt) ->
     Gcs = bsm_rename_ctx_list(Gcs0, Old, New, InProt),
-    L#l{ke={guard,Gcs}};
-bsm_rename_ctx(#l{ke={guard_clause,G0,B0}}=L, Old, New, InProt) ->
+    Guard#k_guard{clauses=Gcs};
+bsm_rename_ctx(#k_guard_clause{guard=G0,body=B0}=GC, Old, New, InProt) ->
     G = bsm_rename_ctx(G0, Old, New, InProt),
     B = bsm_rename_ctx(B0, Old, New, InProt),
     %% A guard clause may cause unsaved variables to be saved on the stack.
@@ -356,49 +694,45 @@ bsm_rename_ctx(#l{ke={guard_clause,G0,B0}}=L, Old, New, InProt) ->
     %% same register), it is neither in the stack nor register descriptor
     %% lists and we would crash when we didn't find it unless we remove
     %% it from the database.
-    bsm_forget_var(L#l{ke={guard_clause,G,B}}, Old);
-bsm_rename_ctx(#l{ke={protected,Ts0,Rs}}=L, Old, New, _InProt) ->
+    bsm_forget_var(GC#k_guard_clause{guard=G,body=B}, Old);
+bsm_rename_ctx(#k_protected{arg=Ts0}=Prot, Old, New, _InProt) ->
     InProt = true,
     Ts = bsm_rename_ctx_list(Ts0, Old, New, InProt),
-    bsm_forget_var(L#l{ke={protected,Ts,Rs}}, Old);
-bsm_rename_ctx(#l{ke={match,Ms0,Rs}}=L, Old, New, InProt) ->
-    Ms = bsm_rename_ctx(Ms0, Old, New, InProt),
-    L#l{ke={match,Ms,Rs}};
-bsm_rename_ctx(#l{ke={guard_match,Ms0,Rs}}=L, Old, New, InProt) ->
+    bsm_forget_var(Prot#k_protected{arg=Ts}, Old);
+bsm_rename_ctx(#k_guard_match{body=Ms0}=Match, Old, New, InProt) ->
     Ms = bsm_rename_ctx(Ms0, Old, New, InProt),
-    L#l{ke={guard_match,Ms,Rs}};
-bsm_rename_ctx(#l{ke={test,_,_,_}}=L, _, _, _) -> L;
-bsm_rename_ctx(#l{ke={bif,_,_,_}}=L, _, _, _) -> L;
-bsm_rename_ctx(#l{ke={gc_bif,_,_,_}}=L, _, _, _) -> L;
-bsm_rename_ctx(#l{ke={set,_,_}}=L, _, _, _) -> L;
-bsm_rename_ctx(#l{ke={call,_,_,_}}=L, _, _, _) -> L;
-bsm_rename_ctx(#l{ke={block,_}}=L, Old, _, false) ->
+    Match#k_guard_match{body=Ms};
+bsm_rename_ctx(#k_test{}=Test, _, _, _) -> Test;
+bsm_rename_ctx(#k_bif{}=Bif, _, _, _) -> Bif;
+bsm_rename_ctx(#k_put{}=Put, _, _, _) -> Put;
+bsm_rename_ctx(#k_call{}=Call, _, _, _) -> Call;
+bsm_rename_ctx(#cg_block{}=Block, Old, _, false) ->
     %% This block is not inside a protected. The match context variable cannot
     %% possibly be live inside the block.
-    bsm_forget_var(L, Old);
-bsm_rename_ctx(#l{ke={block,Bl0}}=L, Old, New, true) ->
+    bsm_forget_var(Block, Old);
+bsm_rename_ctx(#cg_block{es=Es0}=Block, Old, New, true) ->
     %% A block in a protected. We must recursively rename the variable
     %% inside the block.
-    Bl = bsm_rename_ctx_list(Bl0, Old, New, true),
-    bsm_forget_var(L#l{ke={block,Bl}}, Old);
-bsm_rename_ctx(#l{ke={guard_break,Bs,Locked0}}=L0, Old, _New, _InProt) ->
-    Locked = Locked0 -- [Old],
-    L = L0#l{ke={guard_break,Bs,Locked}},
-    bsm_forget_var(L, Old).
+    Es = bsm_rename_ctx_list(Es0, Old, New, true),
+    bsm_forget_var(Block#cg_block{es=Es}, Old);
+bsm_rename_ctx(#k_guard_break{}=Break, Old, _New, _InProt) ->
+    bsm_forget_var(Break, Old).
 
 bsm_rename_ctx_list([C|Cs], Old, New, InProt) ->
     [bsm_rename_ctx(C, Old, New, InProt)|
      bsm_rename_ctx_list(Cs, Old, New, InProt)];
 bsm_rename_ctx_list([], _, _, _) -> [].
-    
+
 bsm_rename_var(Old, Old, New) -> New;
 bsm_rename_var(V, _, _) -> V.
 
 %% bsm_forget_var(#l{}, Variable) -> #l{}
 %%  Remove a variable from the variable life-time database.
 
-bsm_forget_var(#l{vdb=Vdb}=L, V) ->
-    L#l{vdb=keydelete(V, 1, Vdb)}.
+bsm_forget_var(Ke, V) ->
+    #l{vdb=Vdb} = L0 = get_kanno(Ke),
+    L = L0#l{vdb=keydelete(V, 1, Vdb)},
+    set_kanno(Ke, L).
 
 %% block_cg([Kexpr], Le, Vdb, StackReg, St) -> {[Ainstr],StackReg,St}.
 %% block_cg([Kexpr], Le, StackReg, St) -> {[Ainstr],StackReg,St}.
@@ -407,158 +741,227 @@ block_cg(Es, Le, _Vdb, Bef, St) ->
     block_cg(Es, Le, Bef, St).
 
 block_cg(Es, Le, Bef, #cg{is_top_block=false}=St) ->
-    cg_block(Es, Le#l.i, Le#l.vdb, Bef, St);
-block_cg(Es, Le, Bef, St0) ->
-    {Is0,Aft,St} = cg_block(Es, Le#l.i, Le#l.vdb, Bef,
-			    St0#cg{is_top_block=false,need_frame=false}),
-    Is = top_level_block(Is0, Aft, max_reg(Bef#sr.reg), St),
-    {Is,Aft,St#cg{is_top_block=true}}.
-
-cg_block([], _I, _Vdb, Bef, St0) ->
+    cg_block(Es, Le#l.vdb, Bef, St);
+block_cg(Es, Le, Bef, #cg{is_top_block=true}=St0) ->
+    %% No stack frame has been established yet. Do we need one?
+    case need_stackframe(Es) of
+        true ->
+            %% We need a stack frame. Generate the code and add the
+            %% code for creating and deallocating the stack frame.
+            {Is0,Aft,St} = cg_block(Es, Le#l.vdb, Bef,
+                                    St0#cg{is_top_block=false,need_frame=false}),
+            Is = top_level_block(Is0, Aft, max_reg(Bef#sr.reg), St),
+            {Is,Aft,St#cg{is_top_block=true}};
+        false ->
+            %% This sequence of instructions ending in a #k_match{} (a
+            %% 'case' or 'if') in the Erlang code does not need a
+            %% stack frame yet. Delay the creation (if a stack frame
+            %% is needed at all, it will be created inside the
+            %% #k_match{}).
+            cg_list(Es, Le#l.vdb, Bef, St0)
+    end.
+
+%% need_stackframe([Kexpr]) -> true|false.
+%%  Does this list of instructions need a stack frame?
+%%
+%%  A sequence of instructions that don't clobber the X registers
+%%  followed by a single #k_match{} doesn't need a stack frame.
+
+need_stackframe([H|T]) ->
+    case H of
+        #k_bif{op=#k_internal{}} -> true;
+        #k_put{arg=#k_binary{}} -> true;
+        #k_bif{} -> need_stackframe(T);
+        #k_put{} -> need_stackframe(T);
+        #k_guard_match{} -> need_stackframe(T);
+        #k_match{} when T =:= [] -> false;
+        _ -> true
+    end;
+need_stackframe([]) -> false.
+
+cg_block([], _Vdb, Bef, St0) ->
     {[],Bef,St0};
-cg_block(Kes0, I, Vdb, Bef, St0) ->
+cg_block(Kes0, Vdb, Bef, St0) ->
     {Kes2,Int1,St1} =
 	case basic_block(Kes0) of
 	    {Kes1,LastI,Args,Rest} ->
-		Ke = hd(Kes1),
-		Fb = Ke#l.i,
-		cg_basic_block(Kes1, Fb, LastI, Args, Vdb, Bef, St0);
+		cg_basic_block(Kes1, LastI, Args, Vdb, Bef, St0);
 	    {Kes1,Rest} ->
-		cg_list(Kes1, I, Vdb, Bef, St0)
+		cg_list(Kes1, Vdb, Bef, St0)
 	end,
-    {Kes3,Int2,St2} = cg_block(Rest, I, Vdb, Int1, St1),
+    {Kes3,Int2,St2} = cg_block(Rest, Vdb, Int1, St1),
     {Kes2 ++ Kes3,Int2,St2}.
 
 basic_block(Kes) -> basic_block(Kes, []).
 
-basic_block([Le|Les], Acc) ->
-    case collect_block(Le#l.ke) of
-	include -> basic_block(Les, [Le|Acc]);
+basic_block([Ke|Kes], Acc) ->
+    case collect_block(Ke) of
+	include -> basic_block(Kes, [Ke|Acc]);
 	{block_end,As} ->
 	    case Acc of
 		[] ->
-		    %% If the basic block does not contain any set instructions,
+		    %% If the basic block does not contain any #k_put{} instructions,
 		    %% it serves no useful purpose to do basic block optimizations.
-		    {[Le],Les};
+		    {[Ke],Kes};
 		_ ->
-		    {reverse(Acc, [Le]),Le#l.i,As,Les}
+                    #l{i=I} = get_kanno(Ke),
+		    {reverse(Acc, [Ke]),I,As,Kes}
 	    end;
-	no_block -> {reverse(Acc, [Le]),Les}
+	no_block -> {reverse(Acc, [Ke]),Kes}
     end.
 
-%% sets that may garbage collect are not allowed in basic blocks.
-	
-collect_block({set,_,{binary,_}})    -> no_block;
-collect_block({set,_,{map,_,_,_}})   -> no_block;
-collect_block({set,_,_})             -> include;
-collect_block({call,{var,_}=Var,As,_Rs}) -> {block_end,As++[Var]};
-collect_block({call,Func,As,_Rs})   -> {block_end,As++func_vars(Func)};
-collect_block({enter,{var,_}=Var,As})-> {block_end,As++[Var]};
-collect_block({enter,Func,As})       -> {block_end,As++func_vars(Func)};
-collect_block({return,Rs})           -> {block_end,Rs};
-collect_block({break,Bs})            -> {block_end,Bs};
-collect_block(_)                     -> no_block.
-
-func_vars({remote,M,F}) when element(1, M) =:= var;
-			     element(1, F) =:= var ->
+collect_block(#k_put{arg=Arg}) ->
+    %% #k_put{} instructions that may garbage collect are not allowed
+    %% in basic blocks.
+    case Arg of
+        #k_binary{} -> no_block;
+        #k_map{} -> no_block;
+        _ -> include
+    end;
+collect_block(#k_call{op=Func,args=As}) ->
+    {block_end,As++func_vars(Func)};
+collect_block(#k_enter{op=Func,args=As}) ->
+    {block_end,As++func_vars(Func)};
+collect_block(#k_return{args=Rs}) ->
+    {block_end,Rs};
+collect_block(#k_break{args=Bs}) ->
+    {block_end,Bs};
+collect_block(_) -> no_block.
+
+func_vars(#k_var{}=Var) ->
+    [Var];
+func_vars(#k_remote{mod=M,name=F})
+  when is_record(M, k_var); is_record(F, k_var) ->
     [M,F];
 func_vars(_) -> [].
 
-%% cg_basic_block([Kexpr], FirstI, LastI, As, Vdb, StackReg, State) ->
+%% cg_basic_block([Kexpr], FirstI, LastI, Arguments, Vdb, StackReg, State) ->
 %%      {[Ainstr],StackReg,State}.
-
-cg_basic_block(Kes, Fb, Lf, As, Vdb, Bef, St0) ->
-    Res = make_reservation(As, 0),
-    Regs0 = reserve(Res, Bef#sr.reg, Bef#sr.stk),
-    Stk = extend_stack(Bef, Lf, Lf+1, Vdb),
-    Int0 = Bef#sr{reg=Regs0,stk=Stk,res=Res},
-    X0_v0 = x0_vars(As, Fb, Lf, Vdb),
-    {Keis,{Aft,_,St1}} =
+%%
+%%  Do a specialized code generation for a basic block of #put{}
+%%  instructions (that don't do any garbage collection) followed by a
+%%  call, break, or return.
+%%
+%%  'Arguments' is a list of the variables that must be loaded into
+%%  consecutive X registers before the last instruction in the block.
+%%  The point of this specialized code generation is to try put the
+%%  all of the variables in 'Arguments' into the correct X register
+%%  to begin with, instead of putting them into the first available
+%%  X register and having to move them to the correct X register
+%%  later.
+%%
+%%  To achieve that, we attempt to reserve the X registers that the
+%%  variables in 'Arguments' will need to be in when the block ends.
+%%
+%%  To make it more likely that reservations will be successful, we
+%%  will try to save variables that need to be saved to the stack as
+%%  early as possible (if an X register needed by a variable in
+%%  Arguments is occupied by another variable, the value in the
+%%  X register can be evicted if it is saved on the stack).
+%%
+%%  We will take care not to increase the size of stack frame compared
+%%  to what the standard code generator would have done (that is, to
+%%  save all X registers at the last possible moment). We will do that
+%%  by extending the stack frame to the minimal size needed to save
+%%  all that needs to be saved using extend_stack/4, and use
+%%  save_carefully/4 during code generation to only save the variables
+%%  that can be saved without growing the stack frame.
+
+cg_basic_block(Kes, Lf, As, Vdb, Bef, St0) ->
+    Int0 = reserve_arg_regs(As, Bef),
+    Int = extend_stack(Int0, Lf, Lf+1, Vdb),
+    {Keis,{Aft,St1}} =
 	flatmapfoldl(fun(Ke, St) -> cg_basic_block(Ke, St, Lf, Vdb) end,
-		     {Int0,X0_v0,St0}, need_heap(Kes, Fb)),
+		     {Int,St0}, need_heap(Kes)),
     {Keis,Aft,St1}.
 
-cg_basic_block(#l{ke={need_heap,_}}=Ke, {Inta,X0v,Sta}, _Lf, Vdb) ->
-    {Keis,Intb,Stb} = cg(Ke, Vdb, Inta, Sta),
-    {Keis, {Intb,X0v,Stb}};
-cg_basic_block(Ke, {Inta,X0_v1,Sta}, Lf, Vdb) ->
-    {Sis,Intb} = save_carefully(Inta, Ke#l.i, Lf+1, Vdb),
-    {X0_v2,Intc} = allocate_x0(X0_v1, Ke#l.i, Intb),
-    Intd = reserve(Intc),
-    {Keis,Inte,Stb} = cg(Ke, Vdb, Intd, Sta),
-    {Sis ++ Keis, {Inte,X0_v2,Stb}}.
-
-make_reservation([], _) -> [];
-make_reservation([{var,V}|As], I) -> [{I,V}|make_reservation(As, I+1)];
-make_reservation([A|As], I) -> [{I,A}|make_reservation(As, I+1)].
-
-reserve(Sr) -> Sr#sr{reg=reserve(Sr#sr.res, Sr#sr.reg, Sr#sr.stk)}.
-
-reserve([{I,V}|Rs], [free|Regs], Stk) -> [{reserved,I,V}|reserve(Rs, Regs, Stk)];
-reserve([{I,V}|Rs], [{I,V}|Regs], Stk) -> [{I,V}|reserve(Rs, Regs, Stk)];
-reserve([{I,V}|Rs], [{I,Var}|Regs], Stk) ->
+cg_basic_block(#cg_need_heap{}=Ke, {Bef,St0}, _Lf, Vdb) ->
+    {Keis,Aft,St1} = cg(Ke, Vdb, Bef, St0),
+    {Keis,{Aft,St1}};
+cg_basic_block(Ke, {Bef,St0}, Lf, Vdb) ->
+    #l{i=I} = get_kanno(Ke),
+
+    %% Save all we can to increase the possibility that reserving
+    %% registers will succeed.
+    {Sis,Int0} = save_carefully(Bef, I, Lf+1, Vdb),
+    Int1 = reserve(Int0),
+    {Keis,Aft,St1} = cg(Ke, Vdb, Int1, St0),
+    {Sis ++ Keis,{Aft,St1}}.
+
+%% reserve_arg_regs([Argument], Bef) -> Aft.
+%%  Try to reserve the X registers for all arguments. All registers
+%%  that we wish to reserve will be saved in Bef#sr.res.
+
+reserve_arg_regs(As, Bef) ->
+    Res = reserve_arg_regs_1(As, 0),
+    reserve(Bef#sr{res=Res}).
+
+reserve_arg_regs_1([#k_var{name=V}|As], I) ->
+    [{I,V}|reserve_arg_regs_1(As, I+1)];
+reserve_arg_regs_1([A|As], I) ->
+    [{I,A}|reserve_arg_regs_1(As, I+1)];
+reserve_arg_regs_1([], _) -> [].
+
+%% reserve(Bef) -> Aft.
+%%  Try to reserve more registers. The registers we wish to reserve
+%%  are found in Bef#sr.res.
+
+reserve(#sr{reg=Regs,stk=Stk,res=Res}=Sr) ->
+    Sr#sr{reg=reserve_1(Res, Regs, Stk)}.
+
+reserve_1([{I,V}|Rs], [free|Regs], Stk) ->
+    [{reserved,I,V}|reserve_1(Rs, Regs, Stk)];
+reserve_1([{I,V}|Rs], [{I,V}|Regs], Stk) ->
+    [{I,V}|reserve_1(Rs, Regs, Stk)];
+reserve_1([{I,V}|Rs], [{I,Var}|Regs], Stk) ->
     case on_stack(Var, Stk) of
-	true -> [{reserved,I,V}|reserve(Rs, Regs, Stk)];
-	false -> [{I,Var}|reserve(Rs, Regs, Stk)]
+	true -> [{reserved,I,V}|reserve_1(Rs, Regs, Stk)];
+	false -> [{I,Var}|reserve_1(Rs, Regs, Stk)]
     end;
-reserve([{I,V}|Rs], [{reserved,I,_}|Regs], Stk) ->
-    [{reserved,I,V}|reserve(Rs, Regs, Stk)];
-%reserve([{I,V}|Rs], [Other|Regs], Stk) -> [Other|reserve(Rs, Regs, Stk)];
-reserve([{I,V}|Rs], [], Stk) -> [{reserved,I,V}|reserve(Rs, [], Stk)];
-reserve([], Regs, _) -> Regs.
-
-extend_stack(Bef, Fb, Lf, Vdb) ->
-    Stk0 = clear_dead_stk(Bef#sr.stk, Fb, Vdb),
-    Saves = [V || {V,F,L} <- Vdb,
-		  F < Fb,
-		  L >= Lf,
-		  not on_stack(V, Stk0)],
-    Stk1 = foldl(fun (V, Stk) -> put_stack(V, Stk) end, Stk0, Saves),
-    Bef#sr.stk ++ lists:duplicate(length(Stk1) - length(Bef#sr.stk), free).
-
-save_carefully(Bef, Fb, Lf, Vdb) ->
-    Stk = Bef#sr.stk,
-    %% New variables that are in use but not on stack.
-    New = [VFL || {V,F,L} = VFL <- Vdb,
-		  F < Fb,
-		  L >= Lf,
-		  not on_stack(V, Stk)],
-    Saves = [V || {V,_,_} <- keysort(2, New)],
-    save_carefully(Saves, Bef, []).
-
-save_carefully([], Bef, Acc) -> {reverse(Acc),Bef};
-save_carefully([V|Vs], Bef, Acc) ->
-    case put_stack_carefully(V, Bef#sr.stk) of
-	error -> {reverse(Acc),Bef};
+reserve_1([{I,V}|Rs], [{reserved,I,_}|Regs], Stk) ->
+    [{reserved,I,V}|reserve_1(Rs, Regs, Stk)];
+reserve_1([{I,V}|Rs], [], Stk) ->
+    [{reserved,I,V}|reserve_1(Rs, [], Stk)];
+reserve_1([], Regs, _) -> Regs.
+
+%% extend_stack(Bef, FirstBefore, LastFrom, Vdb) -> Aft.
+%%  Extend the stack enough to fit all variables alive past LastFrom
+%%  and not already on the stack.
+
+extend_stack(#sr{stk=Stk0}=Bef, Fb, Lf, Vdb) ->
+    Stk1 = clear_dead_stk(Stk0, Fb, Vdb),
+    New = new_not_on_stack(Stk1, Fb, Lf, Vdb),
+    Stk2 = foldl(fun ({V,_,_}, Stk) -> put_stack(V, Stk) end, Stk1, New),
+    Stk = Stk0 ++ lists:duplicate(length(Stk2) - length(Stk0), free),
+    Bef#sr{stk=Stk}.
+
+%% save_carefully(Bef, FirstBefore, LastFrom, Vdb) -> {[SaveVar],Aft}.
+%%  Save variables which are used past current point and which are not
+%%  already on the stack, but only if the variables can be saved without
+%%  growing the stack frame.
+
+save_carefully(#sr{stk=Stk}=Bef, Fb, Lf, Vdb) ->
+    New0 = new_not_on_stack(Stk, Fb, Lf, Vdb),
+    New = keysort(2, New0),
+    save_carefully_1(New, Bef, []).
+
+save_carefully_1([{V,_,_}|Vs], #sr{reg=Regs,stk=Stk0}=Bef, Acc) ->
+    case put_stack_carefully(V, Stk0) of
+	error ->
+            {reverse(Acc),Bef};
 	Stk1 ->
-	    SrcReg = fetch_reg(V, Bef#sr.reg),
+	    SrcReg = fetch_reg(V, Regs),
 	    Move = {move,SrcReg,fetch_stack(V, Stk1)},
 	    {x,_} = SrcReg,			%Assertion - must be X register.
-	    save_carefully(Vs, Bef#sr{stk=Stk1}, [Move|Acc])
-    end.
+	    save_carefully_1(Vs, Bef#sr{stk=Stk1}, [Move|Acc])
+    end;
+save_carefully_1([], Bef, Acc) ->
+    {reverse(Acc),Bef}.
 
-x0_vars([], _Fb, _Lf, _Vdb) -> [];
-x0_vars([{var,V}|_], Fb, _Lf, Vdb) ->
-    {V,F,_L} = VFL = vdb_find(V, Vdb),
-    x0_vars1([VFL], Fb, F, Vdb);
-x0_vars([X0|_], Fb, Lf, Vdb) ->
-    x0_vars1([{X0,Lf,Lf}], Fb, Lf, Vdb).
-
-x0_vars1(X0, Fb, Xf, Vdb) ->
-    Vs0 = [VFL || {_V,F,L}=VFL <- Vdb,
-		  F >= Fb,
-		  L < Xf],
-    Vs1 = keysort(3, Vs0),
-    keysort(2, X0++Vs1).
-
-allocate_x0([], _, Bef) -> {[],Bef#sr{res=[]}};
-allocate_x0([{_,_,L}|Vs], I, Bef) when L =< I ->
-    allocate_x0(Vs, I, Bef);
-allocate_x0([{V,_F,_L}=VFL|Vs], _, Bef) ->
-    {[VFL|Vs],Bef#sr{res=reserve_x0(V, Bef#sr.res)}}.
-
-reserve_x0(V, [_|Res]) -> [{0,V}|Res];
-reserve_x0(V, []) -> [{0,V}].
+%% top_level_block([Instruction], Bef, MaxRegs, St) -> [Instruction].
+%%  For the top-level block, allocate a stack frame a necessary,
+%%  adjust Y register numbering and instructions that return
+%%  from the function.
 
 top_level_block(Keis, #sr{stk=[]}, _MaxRegs, #cg{need_frame=false}) ->
     Keis;
@@ -640,21 +1043,27 @@ turn_yreg(Other, _MaxY) ->
 %%  wrong.  These are different as in the second case there is no need
 %%  to try the next type, it will always fail.
 
-select_cg(#l{ke={type_clause,cons,[S]}}, {var,V}, Tf, Vf, Bef, St) ->
+select_cg(#k_type_clause{type=Type,values=Vs}, Var, Tf, Vf, Bef, St) ->
+    #k_var{name=V} = Var,
+    select_cg(Type, Vs, V, Tf, Vf, Bef, St).
+
+select_cg(k_cons, [S], V, Tf, Vf, Bef, St) ->
     select_cons(S, V, Tf, Vf, Bef, St);
-select_cg(#l{ke={type_clause,nil,[S]}}, {var,V}, Tf, Vf, Bef, St) ->
+select_cg(k_nil, [S], V, Tf, Vf, Bef, St) ->
     select_nil(S, V, Tf, Vf, Bef, St);
-select_cg(#l{ke={type_clause,binary,[S]}}, {var,V}, Tf, Vf, Bef, St) ->
+select_cg(k_binary, [S], V, Tf, Vf, Bef, St) ->
     select_binary(S, V, Tf, Vf, Bef, St);
-select_cg(#l{ke={type_clause,bin_seg,S}}, {var,V}, Tf, _Vf, Bef, St) ->
+select_cg(k_bin_seg, S, V, Tf, _Vf, Bef, St) ->
     select_bin_segs(S, V, Tf, Bef, St);
-select_cg(#l{ke={type_clause,bin_int,S}}, {var,V}, Tf, _Vf, Bef, St) ->
+select_cg(k_bin_int, S, V, Tf, _Vf, Bef, St) ->
     select_bin_segs(S, V, Tf, Bef, St);
-select_cg(#l{ke={type_clause,bin_end,[S]}}, {var,V}, Tf, _Vf, Bef, St) ->
+select_cg(k_bin_end, [S], V, Tf, _Vf, Bef, St) ->
     select_bin_end(S, V, Tf, Bef, St);
-select_cg(#l{ke={type_clause,map,S}}, {var,V}, Tf, Vf, Bef, St) ->
+select_cg(k_map, S, V, Tf, Vf, Bef, St) ->
     select_map(S, V, Tf, Vf, Bef, St);
-select_cg(#l{ke={type_clause,Type,Scs}}, {var,V}, Tf, Vf, Bef, St0) ->
+select_cg(k_literal, S, V, Tf, Vf, Bef, St) ->
+    select_literal(S, V, Tf, Vf, Bef, St);
+select_cg(Type, Scs, V, Tf, Vf, Bef, St0) ->
     {Vis,{Aft,St1}} =
 	mapfoldl(fun (S, {Int,Sta}) ->
 			 {Val,Is,Inta,Stb} = select_val(S, V, Vf, Bef, Sta),
@@ -664,22 +1073,29 @@ select_cg(#l{ke={type_clause,Type,Scs}}, {var,V}, Tf, Vf, Bef, St0) ->
     {Vls,Sis,St2} = select_labels(OptVls, St1, [], []),
     {select_val_cg(Type, fetch_var(V, Bef), Vls, Tf, Vf, Sis), Aft, St2}.
 
-select_val_cg(tuple, R, [Arity,{f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
+select_val_cg(k_tuple, R, [Arity,{f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
     [{test,is_tuple,{f,Tf},[R]},{test,test_arity,{f,Vf},[R,Arity]}|Sis];
-select_val_cg(tuple, R, Vls, Tf, Vf, Sis) ->
+select_val_cg(k_tuple, R, Vls, Tf, Vf, Sis) ->
     [{test,is_tuple,{f,Tf},[R]},{select_tuple_arity,R,{f,Vf},{list,Vls}}|Sis];
 select_val_cg(Type, R, [Val, {f,Lbl}], Fail, Fail, [{label,Lbl}|Sis]) ->
-    [{test,is_eq_exact,{f,Fail},[R,{Type,Val}]}|Sis];
+    [{test,is_eq_exact,{f,Fail},[R,{type(Type),Val}]}|Sis];
 select_val_cg(Type, R, [Val, {f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
     [{test,select_type_test(Type),{f,Tf},[R]},
-     {test,is_eq_exact,{f,Vf},[R,{Type,Val}]}|Sis];
+     {test,is_eq_exact,{f,Vf},[R,{type(Type),Val}]}|Sis];
 select_val_cg(Type, R, Vls0, Tf, Vf, Sis) ->
-    Vls1 = [case Value of {f,_Lbl} -> Value; _ -> {Type,Value} end || Value <- Vls0],
+    Vls1 = [case Value of
+                {f,_Lbl} -> Value;
+                _ -> {type(Type),Value}
+            end || Value <- Vls0],
     [{test,select_type_test(Type),{f,Tf},[R]}, {select_val,R,{f,Vf},{list,Vls1}}|Sis].
-    
-select_type_test(integer) -> is_integer;
-select_type_test(atom) -> is_atom;
-select_type_test(float) -> is_float.
+
+type(k_atom) -> atom;
+type(k_float) -> float;
+type(k_int) -> integer.
+
+select_type_test(k_int) -> is_integer;
+select_type_test(k_atom) -> is_atom;
+select_type_test(k_float) -> is_float.
 
 combine([{Is,Vs1}, {Is,Vs2}|Vis]) -> combine([{Is,Vs1 ++ Vs2}|Vis]);
 combine([V|Vis]) -> [V|combine(Vis)];
@@ -695,36 +1111,49 @@ add_vls([V|Vs], Lbl, Acc) ->
     add_vls(Vs, Lbl, [V, {f,Lbl}|Acc]);
 add_vls([], _, Acc) -> Acc.
 
-select_cons(#l{ke={val_clause,{cons,Es},B},i=I,vdb=Vdb}, V, Tf, Vf, Bef, St0) ->
+select_literal(S, V, Tf, Vf, Bef, St) ->
+    Reg = fetch_var(V, Bef),
+    F = fun(ValClause, Fail, St0) ->
+                {Val,Is,Aft,St1} = select_val(ValClause, V, Vf, Bef, St0),
+                Test = {test,is_eq_exact,{f,Fail},[Reg,{literal,Val}]},
+                {[Test|Is],Aft,St1}
+        end,
+    match_fmf(F, Tf, St, S).
+
+select_cons(#k_val_clause{val=#k_cons{hd=Hd,tl=Tl},body=B,anno=#l{i=I,vdb=Vdb}},
+            V, Tf, Vf, Bef, St0) ->
+    Es = [Hd,Tl],
     {Eis,Int,St1} = select_extract_cons(V, Es, I, Vdb, Bef, St0),
     {Bis,Aft,St2} = match_cg(B, Vf, Int, St1),
     {[{test,is_nonempty_list,{f,Tf},[fetch_var(V, Bef)]}] ++ Eis ++ Bis,Aft,St2}.
 
-select_nil(#l{ke={val_clause,nil,B}}, V, Tf, Vf, Bef, St0) ->
+select_nil(#k_val_clause{val=#k_nil{},body=B}, V, Tf, Vf, Bef, St0) ->
     {Bis,Aft,St1} = match_cg(B, Vf, Bef, St0),
     {[{test,is_nil,{f,Tf},[fetch_var(V, Bef)]}] ++ Bis,Aft,St1}.
 
-select_binary(#l{ke={val_clause,{binary,{var,V}},B},i=I,vdb=Vdb},
-	      V, Tf, Vf, Bef, St0) ->
+select_binary(#k_val_clause{val=#k_binary{segs=#k_var{name=V}},body=B,
+                            anno=#l{i=I,vdb=Vdb}}, V, Tf, Vf, Bef, St0) ->
+    #cg{ctx=OldCtx} = St0,
     Int0 = clear_dead(Bef#sr{reg=Bef#sr.reg}, I, Vdb),
-    {Bis0,Aft,St1} = match_cg(B, Vf, Int0, St0),
+    {Bis0,Aft,St1} = match_cg(B, Vf, Int0, St0#cg{ctx=V}),
     CtxReg = fetch_var(V, Int0),
     Live = max_reg(Bef#sr.reg),
     Bis1 = [{test,bs_start_match2,{f,Tf},Live,[CtxReg,V],CtxReg},
 	    {bs_save2,CtxReg,{V,V}}|Bis0],
     Bis = finish_select_binary(Bis1),
-    {Bis,Aft,St1};
-select_binary(#l{ke={val_clause,{binary,{var,Ivar}},B},i=I,vdb=Vdb},
-	      V, Tf, Vf, Bef, St0) ->
+    {Bis,Aft,St1#cg{ctx=OldCtx}};
+select_binary(#k_val_clause{val=#k_binary{segs=#k_var{name=Ivar}},body=B,
+                            anno=#l{i=I,vdb=Vdb}}, V, Tf, Vf, Bef, St0) ->
+    #cg{ctx=OldCtx} = St0,
     Regs = put_reg(Ivar, Bef#sr.reg),
     Int0 = clear_dead(Bef#sr{reg=Regs}, I, Vdb),
-    {Bis0,Aft,St1} = match_cg(B, Vf, Int0, St0),
+    {Bis0,Aft,St1} = match_cg(B, Vf, Int0, St0#cg{ctx=Ivar}),
     CtxReg = fetch_var(Ivar, Int0),
     Live = max_reg(Bef#sr.reg),
     Bis1 = [{test,bs_start_match2,{f,Tf},Live,[fetch_var(V, Bef),Ivar],CtxReg},
 	    {bs_save2,CtxReg,{Ivar,Ivar}}|Bis0],
     Bis = finish_select_binary(Bis1),
-    {Bis,Aft,St1}.
+    {Bis,Aft,St1#cg{ctx=OldCtx}}.
 
 finish_select_binary([{bs_save2,R,Point}=I,{bs_restore2,R,Point}|Is]) ->
     [I|finish_select_binary(Is)];
@@ -746,9 +1175,16 @@ select_bin_segs(Scs, Ivar, Tf, Bef, St) ->
 		      select_bin_seg(S, Ivar, Fail, Bef, Sta) end,
 	      Tf, St, Scs).
 
-select_bin_seg(#l{ke={val_clause,{bin_seg,Ctx,Size,U,T,Fs0,Es},B},i=I,vdb=Vdb,a=A},
-	       Ivar, Fail, Bef, St0) ->
+select_bin_seg(#k_val_clause{val=#k_bin_seg{size=Size,unit=U,type=T,
+                                            seg=Seg,flags=Fs0,next=Next},
+                             body=B,
+                             anno=#l{i=I,vdb=Vdb,a=A}}, Ivar, Fail, Bef, St0) ->
+    Ctx = St0#cg.ctx,
     Fs = [{anno,A}|Fs0],
+    Es = case Next of
+             [] -> [Seg];
+             _ -> [Seg,Next]
+         end,
     {Mis,Int,St1} = select_extract_bin(Es, Size, U, T, Fs, Fail,
 				       I, Vdb, Bef, Ctx, B, St0),
     {Bis,Aft,St2} = match_cg(B, Fail, Int, St1),
@@ -761,9 +1197,12 @@ select_bin_seg(#l{ke={val_clause,{bin_seg,Ctx,Size,U,T,Fs0,Es},B},i=I,vdb=Vdb,a=
 		 [{bs_restore2,CtxReg,{Ctx,Ivar}}|Mis++Bis]
 	 end,
     {Is,Aft,St2};
-select_bin_seg(#l{ke={val_clause,{bin_int,Ctx,Sz,U,Fs,Val,Es},B},i=I,vdb=Vdb},
-	       Ivar, Fail, Bef, St0) ->
-    {Mis,Int,St1} = select_extract_int(Es, Val, Sz, U, Fs, Fail,
+select_bin_seg(#k_val_clause{val=#k_bin_int{size=Sz,unit=U,flags=Fs,
+                                            val=Val,next=Next},
+                             body=B,
+                             anno=#l{i=I,vdb=Vdb}}, Ivar, Fail, Bef, St0) ->
+    Ctx = St0#cg.ctx,
+    {Mis,Int,St1} = select_extract_int(Next, Val, Sz, U, Fs, Fail,
 				       I, Vdb, Bef, Ctx, St0),
     {Bis,Aft,St2} = match_cg(B, Fail, Int, St1),
     CtxReg = fetch_var(Ctx, Bef),
@@ -784,7 +1223,7 @@ select_bin_seg(#l{ke={val_clause,{bin_int,Ctx,Sz,U,Fs,Val,Es},B},i=I,vdb=Vdb},
 	 end,
     {[{bs_restore2,CtxReg,{Ctx,Ivar}}|Is],Aft,St2}.
 
-select_extract_int([{var,Tl}], Val, {integer,Sz}, U, Fs, Vf,
+select_extract_int(#k_var{name=Tl}, Val, #k_int{val=Sz}, U, Fs, Vf,
 		   I, Vdb, Bef, Ctx, St) ->
     Bits = U*Sz,
     Bin = case member(big, Fs) of
@@ -805,7 +1244,7 @@ select_extract_int([{var,Tl}], Val, {integer,Sz}, U, Fs, Vf,
 	 end,
     {Is,clear_dead(Bef, I, Vdb),St}.
 
-select_extract_bin([{var,Hd},{var,Tl}], Size0, Unit, Type, Flags, Vf,
+select_extract_bin([#k_var{name=Hd},#k_var{name=Tl}], Size0, Unit, Type, Flags, Vf,
 		   I, Vdb, Bef, Ctx, _Body, St) ->
     SizeReg = get_bin_size_reg(Size0, Bef),
     {Es,Aft} =
@@ -828,11 +1267,11 @@ select_extract_bin([{var,Hd},{var,Tl}], Size0, Unit, Type, Flags, Vf,
 		  {bs_save2,CtxReg,{Ctx,Tl}}],Int1}
 	end,
     {Es,clear_dead(Aft, I, Vdb),St};
-select_extract_bin([{var,Hd}], Size, Unit, binary, Flags, Vf,
+select_extract_bin([#k_var{name=Hd}], Size, Unit, binary, Flags, Vf,
 		   I, Vdb, Bef, Ctx, Body, St) ->
     %% Match the last segment of a binary. We KNOW that the size
     %% must be 'all'.
-    Size = {atom,all},				%Assertion.
+    #k_atom{val=all} = Size,                    %Assertion.
     {Es,Aft} =
 	case vdb_find(Hd, Vdb) of
 	    {_,_,Lhd} when Lhd =< I ->
@@ -857,7 +1296,7 @@ select_extract_bin([{var,Hd}], Size, Unit, binary, Flags, Vf,
 			Name = bs_get_binary2,
 			Live = max_reg(Bef#sr.reg),
 			{[{test,Name,{f,Vf},Live,
-			   [CtxReg,Size,Unit,{field_flags,Flags}],Rhd}],
+			   [CtxReg,atomic(Size),Unit,{field_flags,Flags}],Rhd}],
 			 Int1};
 		    true ->
 			%% Since the matching context will not be used again,
@@ -872,43 +1311,42 @@ select_extract_bin([{var,Hd}], Size, Unit, binary, Flags, Vf,
 			Name = bs_get_binary2,
 			Live = max_reg(Int1#sr.reg),
 			{[{test,Name,{f,Vf},Live,
-			   [CtxReg,Size,Unit,{field_flags,Flags}],CtxReg}],
+			   [CtxReg,atomic(Size),Unit,{field_flags,Flags}],CtxReg}],
 			 Int1}
 		end
 	end,
     {Es,clear_dead(Aft, I, Vdb),St}.
 
 %% is_context_unused(Ke) -> true | false
-%%   Simple heurististic to determine whether the code that follows will
-%%   use the current matching context again. (The information of liveness
-%%   calculcated by v3_life is too conservative to be useful for this purpose.)
-%%   'true' means that the code that follows will definitely not use the context
-%%   again (because it is a block, not guard or matching code); 'false' that we
-%%   are not sure (there could be more matching).
-
-is_context_unused(#l{ke=Ke}) ->
-    is_context_unused(Ke);
-is_context_unused({alt,_First,Then}) ->
-    %% {alt,First,Then} can be used for different purposes. If the Then part
+%%   Simple heurististic to determine whether the code that follows
+%%   will use the current matching context again. (The liveness
+%%   information is too conservative to be useful for this purpose.)
+%%   'true' means that the code that follows will definitely not use
+%%   the context again (because it is a block, not guard or matching
+%%   code); 'false' that we are not sure (there could be more
+%%   matching).
+
+is_context_unused(#k_alt{then=Then}) ->
+    %% #k_alt{} can be used for different purposes. If the Then part
     %% is a block, it means that matching has finished and is used for a guard
     %% to choose between the matched clauses.
     is_context_unused(Then);
-is_context_unused({block,_}) ->
+is_context_unused(#cg_block{}) ->
     true;
 is_context_unused(_) ->
     false.
 
-select_bin_end(#l{ke={val_clause,{bin_end,Ctx},B}},
-	       Ivar, Tf, Bef, St0) ->
+select_bin_end(#k_val_clause{val=#k_bin_end{},body=B}, Ivar, Tf, Bef, St0) ->
+    Ctx = St0#cg.ctx,
     {Bis,Aft,St2} = match_cg(B, Tf, Bef, St0),
     CtxReg = fetch_var(Ctx, Bef),
     {[{bs_restore2,CtxReg,{Ctx,Ivar}},
       {test,bs_test_tail2,{f,Tf},[CtxReg,0]}|Bis],Aft,St2}.
 
-get_bin_size_reg({var,V}, Bef) ->
+get_bin_size_reg(#k_var{name=V}, Bef) ->
     fetch_var(V, Bef);
 get_bin_size_reg(Literal, _Bef) ->
-    Literal.
+    atomic(Literal).
 
 build_bs_instr(Type, Vf, CtxReg, Live, SizeReg, Unit, Flags, Rhd) ->
     {Format,Name} = case Type of
@@ -942,11 +1380,18 @@ build_skip_instr(Type, Vf, CtxReg, Live, SizeReg, Unit, Flags) ->
 	    {test,Name,{f,Vf},[CtxReg,Live,{field_flags,Flags}]}
     end.
 
-select_val(#l{ke={val_clause,{tuple,Es},B},i=I,vdb=Vdb}, V, Vf, Bef, St0) ->
+select_val(#k_val_clause{val=#k_tuple{es=Es},body=B,anno=#l{i=I,vdb=Vdb}},
+           V, Vf, Bef, St0) ->
     {Eis,Int,St1} = select_extract_tuple(V, Es, I, Vdb, Bef, St0),
     {Bis,Aft,St2} = match_cg(B, Vf, Int, St1),
     {length(Es),Eis ++ Bis,Aft,St2};
-select_val(#l{ke={val_clause,{_,Val},B}}, _V, Vf, Bef, St0) ->
+select_val(#k_val_clause{val=Val0,body=B}, _V, Vf, Bef, St0) ->
+    Val = case Val0 of
+              #k_atom{val=Lit} -> Lit;
+              #k_float{val=Lit} -> Lit;
+              #k_int{val=Lit} -> Lit;
+              #k_literal{val=Lit} -> Lit
+          end,
     {Bis,Aft,St1} = match_cg(B, Vf, Bef, St0),
     {Val,Bis,Aft,St1}.
 
@@ -955,7 +1400,7 @@ select_val(#l{ke={val_clause,{_,Val},B}}, _V, Vf, Bef, St0) ->
 %%  Extract tuple elements, but only if they do not immediately die.
 
 select_extract_tuple(Src, Vs, I, Vdb, Bef, St) ->
-    F = fun ({var,V}, {Int0,Elem}) ->
+    F = fun (#k_var{name=V}, {Int0,Elem}) ->
 		case vdb_find(V, Vdb) of
 		    {V,_,L} when L =< I -> {[], {Int0,Elem+1}};
 		    _Other ->
@@ -972,9 +1417,10 @@ select_extract_tuple(Src, Vs, I, Vdb, Bef, St) ->
 select_map(Scs, V, Tf, Vf, Bef, St0) ->
     Reg = fetch_var(V, Bef),
     {Is,Aft,St1} =
-	match_fmf(fun(#l{ke={val_clause,{map,exact,_,Es},B},i=I,vdb=Vdb}, Fail, St1) ->
-			  select_map_val(V, Es, B, Fail, I, Vdb, Bef, St1)
-		  end, Vf, St0, Scs),
+	match_fmf(fun(#k_val_clause{val=#k_map{op=exact,es=Es},
+                                    body=B,anno=#l{i=I,vdb=Vdb}}, Fail, St1) ->
+                          select_map_val(V, Es, B, Fail, I, Vdb, Bef, St1)
+                  end, Vf, St0, Scs),
     {[{test,is_map,{f,Tf},[Reg]}|Is],Aft,St1}.
 
 select_map_val(V, Es, B, Fail, I, Vdb, Bef, St0) ->
@@ -991,29 +1437,32 @@ select_extract_map(Src, Vs, Fail, I, Vdb, Bef, St) ->
     %% Assume keys are term-sorted
     Rsrc = fetch_var(Src, Bef),
 
-    {{HasKs,GetVs,HasVarKs,GetVarVs},Aft} = lists:foldr(fun
-	    ({map_pair,{var,K},{var,V}},{{HasKsi,GetVsi,HasVarVsi,GetVarVsi},Int0}) ->
-		case vdb_find(V, Vdb) of
-		    {V,_,L} when L =< I ->
-			RK = fetch_var(K,Int0),
-			{{HasKsi,GetVsi,[RK|HasVarVsi],GetVarVsi},Int0};
-		    _Other ->
-			Reg1 = put_reg(V, Int0#sr.reg),
-			Int1 = Int0#sr{reg=Reg1},
-			RK = fetch_var(K,Int0),
-			RV = fetch_reg(V,Reg1),
-			{{HasKsi,GetVsi,HasVarVsi,[[RK,RV]|GetVarVsi]},Int1}
-		end;
-	    ({map_pair,Key,{var,V}},{{HasKsi,GetVsi,HasVarVsi,GetVarVsi},Int0}) ->
-		case vdb_find(V, Vdb) of
-		    {V,_,L} when L =< I ->
-			{{[Key|HasKsi],GetVsi,HasVarVsi,GetVarVsi},Int0};
-		    _Other ->
-			Reg1 = put_reg(V, Int0#sr.reg),
-			Int1 = Int0#sr{reg=Reg1},
-			{{HasKsi,[Key,fetch_reg(V, Reg1)|GetVsi],HasVarVsi,GetVarVsi},Int1}
-		end
-	end, {{[],[],[],[]},Bef}, Vs),
+    {{HasKs,GetVs,HasVarKs,GetVarVs},Aft} =
+        foldr(fun(#k_map_pair{key=#k_var{name=K},val=#k_var{name=V}},
+                  {{HasKsi,GetVsi,HasVarVsi,GetVarVsi},Int0}) ->
+                      case vdb_find(V, Vdb) of
+                          {V,_,L} when L =< I ->
+                              RK = fetch_var(K,Int0),
+                              {{HasKsi,GetVsi,[RK|HasVarVsi],GetVarVsi},Int0};
+                          _Other ->
+                              Reg1 = put_reg(V, Int0#sr.reg),
+                              Int1 = Int0#sr{reg=Reg1},
+                              RK = fetch_var(K,Int0),
+                              RV = fetch_reg(V,Reg1),
+                              {{HasKsi,GetVsi,HasVarVsi,[[RK,RV]|GetVarVsi]},Int1}
+                      end;
+                 (#k_map_pair{key=Key,val=#k_var{name=V}},
+                  {{HasKsi,GetVsi,HasVarVsi,GetVarVsi},Int0}) ->
+                      case vdb_find(V, Vdb) of
+                          {V,_,L} when L =< I ->
+                              {{[atomic(Key)|HasKsi],GetVsi,HasVarVsi,GetVarVsi},Int0};
+                          _Other ->
+                              Reg1 = put_reg(V, Int0#sr.reg),
+                              Int1 = Int0#sr{reg=Reg1},
+                              {{HasKsi,[atomic(Key),fetch_reg(V, Reg1)|GetVsi],
+                                HasVarVsi,GetVarVsi},Int1}
+                      end
+              end, {{[],[],[],[]},Bef}, Vs),
 
     Code = [{test,has_map_fields,{f,Fail},Rsrc,{list,HasKs}} || HasKs =/= []] ++
 	   [{test,has_map_fields,{f,Fail},Rsrc,{list,[K]}}   || K <- HasVarKs] ++
@@ -1022,7 +1471,7 @@ select_extract_map(Src, Vs, Fail, I, Vdb, Bef, St) ->
     {Code, Aft, St}.
 
 
-select_extract_cons(Src, [{var,Hd}, {var,Tl}], I, Vdb, Bef, St) ->
+select_extract_cons(Src, [#k_var{name=Hd}, #k_var{name=Tl}], I, Vdb, Bef, St) ->
     {Es,Aft} = case {vdb_find(Hd, Vdb), vdb_find(Tl, Vdb)} of
 		   {{_,_,Lhd}, {_,_,Ltl}} when Lhd =< I, Ltl =< I ->
 		       %% Both head and tail are dead.  No need to generate
@@ -1045,7 +1494,7 @@ select_extract_cons(Src, [{var,Hd}, {var,Tl}], I, Vdb, Bef, St) ->
     {Es,Aft,St}.
     
 
-guard_clause_cg(#l{ke={guard_clause,G,B},vdb=Vdb}, Fail, Bef, St0) ->
+guard_clause_cg(#k_guard_clause{anno=#l{vdb=Vdb},guard=G,body=B}, Fail, Bef, St0) ->
     {Gis,Int,St1} = guard_cg(G, Fail, Vdb, Bef, St0),
     {Bis,Aft,St} = match_cg(B, Fail, Int, St1),
     {Gis ++ Bis,Aft,St}.
@@ -1058,11 +1507,11 @@ guard_clause_cg(#l{ke={guard_clause,G,B},vdb=Vdb}, Fail, Bef, St0) ->
 %%  the correct exit point.  Primops and tests all go to the next
 %%  instruction on success or jump to a failure label.
 
-guard_cg(#l{ke={protected,Ts,Rs},i=I,vdb=Pdb}, Fail, _Vdb, Bef, St) ->
-    protected_cg(Ts, Rs, Fail, I, Pdb, Bef, St);
-guard_cg(#l{ke={block,Ts},i=I,vdb=Bdb}, Fail, _Vdb, Bef, St) ->
-    guard_cg_list(Ts, Fail, I, Bdb, Bef, St);
-guard_cg(#l{ke={test,Test,As,Inverted},i=I,vdb=_Tdb}, Fail, Vdb, Bef, St0) ->
+guard_cg(#k_protected{arg=Ts,ret=Rs,anno=#l{vdb=Pdb}}, Fail, _Vdb, Bef, St) ->
+    protected_cg(Ts, Rs, Fail, Pdb, Bef, St);
+guard_cg(#k_test{anno=#l{i=I},op=Test0,args=As,inverted=Inverted},
+         Fail, Vdb, Bef, St0) ->
+    #k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=Test}} = Test0,
     case Inverted of
 	false ->
 	    test_cg(Test, As, Fail, I, Vdb, Bef, St0);
@@ -1077,6 +1526,18 @@ guard_cg(G, _Fail, Vdb, Bef, St) ->
     %%ok = io:fwrite("cg ~w: ~p~n", [?LINE,{Aft}]),
     {Gis,Aft,St1}.
 
+%% guard_cg_list([Kexpr], Fail, I, Vdb, StackReg, St) ->
+%%      {[Ainstr],StackReg,St}.
+
+guard_cg_list(Kes, Fail, Vdb, Bef, St0) ->
+    {Keis,{Aft,St1}} =
+	flatmapfoldl(fun (Ke, {Inta,Sta}) ->
+			     {Keis,Intb,Stb} =
+				 guard_cg(Ke, Fail, Vdb, Inta, Sta),
+			     {Keis,{Intb,Stb}}
+		     end, {Bef,St0}, need_heap(Kes)),
+    {Keis,Aft,St1}.
+
 %% protected_cg([Kexpr], [Ret], Fail, I, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
 %%  Do a protected.  Protecteds without return values are just done
 %%  for effect, the return value is not checked, success passes on to
@@ -1084,19 +1545,18 @@ guard_cg(G, _Fail, Vdb, Bef, St) ->
 %%  return values then these must be set to 'false' on failure,
 %%  control always passes to the next instruction.
 
-protected_cg(Ts, [], Fail, I, Vdb, Bef, St0) ->
+protected_cg(Ts, [], Fail, Vdb, Bef, St0) ->
     %% Protect these calls, revert when done.
-    {Tis,Aft,St1} = guard_cg_list(Ts, Fail, I, Vdb, Bef,
-				  St0#cg{bfail=Fail}),
+    {Tis,Aft,St1} = guard_cg_list(Ts, Fail, Vdb, Bef, St0#cg{bfail=Fail}),
     {Tis,Aft,St1#cg{bfail=St0#cg.bfail}};
-protected_cg(Ts, Rs, _Fail, I, Vdb, Bef, St0) ->
+protected_cg(Ts, Rs, _Fail, Vdb, Bef, St0) ->
     {Pfail,St1} = new_label(St0),
     {Psucc,St2} = new_label(St1),
-    {Tis,Aft,St3} = guard_cg_list(Ts, Pfail, I, Vdb, Bef,
+    {Tis,Aft,St3} = guard_cg_list(Ts, Pfail, Vdb, Bef,
 				  St2#cg{bfail=Pfail}),
     %%ok = io:fwrite("cg ~w: ~p~n", [?LINE,{Rs,I,Vdb,Aft}]),
     %% Set return values to false.
-    Mis = [{move,{atom,false},fetch_var(V,Aft)}||{var,V} <- Rs],
+    Mis = [{move,{atom,false},fetch_var(V,Aft)}||#k_var{name=V} <- Rs],
     {Tis ++ [{jump,{f,Psucc}},
 	     {label,Pfail}] ++ Mis ++ [{label,Psucc}],
      Aft,St3#cg{bfail=St0#cg.bfail}}.    
@@ -1121,7 +1581,7 @@ test_cg(is_map, [A], Fail, I, Vdb, Bef, St) ->
     Arg = cg_reg_arg_prefer_y(A, Bef),
     Aft = clear_dead(Bef, I, Vdb),
     {[{test,is_map,{f,Fail},[Arg]}],Aft,St};
-test_cg(is_boolean, [{atom,Val}], Fail, I, Vdb, Bef, St) ->
+test_cg(is_boolean, [#k_atom{val=Val}], Fail, I, Vdb, Bef, St) ->
     Aft = clear_dead(Bef, I, Vdb),
     Is = case is_boolean(Val) of
 	     true -> [];
@@ -1133,18 +1593,6 @@ test_cg(Test, As, Fail, I, Vdb, Bef, St) ->
     Aft = clear_dead(Bef, I, Vdb),
     {[beam_utils:bif_to_test(Test, Args, {f,Fail})],Aft,St}.
 
-%% guard_cg_list([Kexpr], Fail, I, Vdb, StackReg, St) ->
-%%      {[Ainstr],StackReg,St}.
-
-guard_cg_list(Kes, Fail, I, Vdb, Bef, St0) ->
-    {Keis,{Aft,St1}} =
-	flatmapfoldl(fun (Ke, {Inta,Sta}) ->
-			     {Keis,Intb,Stb} =
-				 guard_cg(Ke, Fail, Vdb, Inta, Sta),
-			     {Keis,{Intb,Stb}}
-		     end, {Bef,St0}, need_heap(Kes, I)),
-    {Keis,Aft,St1}.
-
 %% match_fmf(Fun, LastFail, State, [Clause]) -> {Is,Aft,State}.
 %%  This is a special flatmapfoldl for match code gen where we
 %%  generate a "failure" label for each clause. The last clause uses
@@ -1167,7 +1615,7 @@ match_fmf(F, LastFail, St0, [H|T]) ->
 %%  frame size. Finally the actual call is made.  Call then needs the
 %%  return values filled in.
 
-call_cg({var,_V} = Var, As, Rs, Le, Vdb, Bef, St0) ->
+call_cg(#k_var{}=Var, As, Rs, Le, Vdb, Bef, St0) ->
     {Sis,Int} = cg_setup_call(As++[Var], Bef, Le#l.i, Vdb),
     %% Put return values in registers.
     Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
@@ -1176,9 +1624,8 @@ call_cg({var,_V} = Var, As, Rs, Le, Vdb, Bef, St0) ->
     {Frees,Aft} = free_dead(clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb)),
     {Sis ++ Frees ++ [line(Le),{call_fun,Arity}],Aft,
      need_stack_frame(St0)};
-call_cg({remote,Mod,Name}, As, Rs, Le, Vdb, Bef, St0)
-  when element(1, Mod) =:= var;
-       element(1, Name) =:= var ->
+call_cg(#k_remote{mod=Mod,name=Name}, As, Rs, Le, Vdb, Bef, St0)
+  when is_record(Mod, k_var); is_record(Name, k_var) ->
     {Sis,Int} = cg_setup_call(As++[Mod,Name], Bef, Le#l.i, Vdb),
     %% Put return values in registers.
     Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
@@ -1196,8 +1643,9 @@ call_cg(Func, As, Rs, Le, Vdb, Bef, St0) ->
 	    %%
 	    %%     move {atom,ok} DestReg
 	    %%     jump FailureLabel
-	    {remote,{atom,erlang},{atom,error}} = Func,	%Assertion.
-	    [{var,DestVar}] = Rs,
+	    #k_remote{mod=#k_atom{val=erlang},
+                      name=#k_atom{val=error}} = Func, %Assertion.
+	    [#k_var{name=DestVar}] = Rs,
 	    Int0 = clear_dead(Bef, Le#l.i, Vdb),
 	    Reg = put_reg(DestVar, Int0#sr.reg),
 	    Int = Int0#sr{reg=Reg},
@@ -1216,11 +1664,11 @@ call_cg(Func, As, Rs, Le, Vdb, Bef, St0) ->
 	    {Sis ++ Frees ++ [line(Le)|Call],Aft,St1}
     end.
 
-build_call({remote,{atom,erlang},{atom,'!'}}, 2, St0) ->
+build_call(#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val='!'}}, 2, St0) ->
     {[send],need_stack_frame(St0)};
-build_call({remote,{atom,Mod},{atom,Name}}, Arity, St0) ->
+build_call(#k_remote{mod=#k_atom{val=Mod},name=#k_atom{val=Name}}, Arity, St0) ->
     {[{call_ext,Arity,{extfunc,Mod,Name,Arity}}],need_stack_frame(St0)};
-build_call(Name, Arity, St0) when is_atom(Name) ->
+build_call(#k_local{name=Name}, Arity, St0) when is_atom(Name) ->
     {Lbl,St1} = local_func_label(Name, Arity, need_stack_frame(St0)),
     {[{call,Arity,{f,Lbl}}],St1}.
 
@@ -1236,16 +1684,15 @@ free_dead([Any|Stk], Y, Instr, StkAcc) ->
     free_dead(Stk, Y+1, Instr, [Any|StkAcc]);
 free_dead([], _, Instr, StkAcc) -> {Instr,reverse(StkAcc)}.
 
-enter_cg({var,_V} = Var, As, Le, Vdb, Bef, St0) ->
+enter_cg(#k_var{} = Var, As, Le, Vdb, Bef, St0) ->
     {Sis,Int} = cg_setup_call(As++[Var], Bef, Le#l.i, Vdb),
     %% Build complete code and final stack/register state.
     Arity = length(As),
     {Sis ++ [line(Le),{call_fun,Arity},return],
      clear_dead(Int#sr{reg=clear_regs(Int#sr.reg)}, Le#l.i, Vdb),
      need_stack_frame(St0)};
-enter_cg({remote,Mod,Name}, As, Le, Vdb, Bef, St0)
-  when element(1, Mod) =:= var;
-       element(1, Name) =:= var ->
+enter_cg(#k_remote{mod=Mod,name=Name}, As, Le, Vdb, Bef, St0)
+  when is_record(Mod, k_var); is_record(Name, k_var) ->
     {Sis,Int} = cg_setup_call(As++[Mod,Name], Bef, Le#l.i, Vdb),
     %% Build complete code and final stack/register state.
     Arity = length(As),
@@ -1263,19 +1710,19 @@ enter_cg(Func, As, Le, Vdb, Bef, St0) ->
      clear_dead(Int#sr{reg=clear_regs(Int#sr.reg)}, Le#l.i, Vdb),
      St1}.
 
-build_enter({remote,{atom,erlang},{atom,'!'}}, 2, St0) ->
+build_enter(#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val='!'}}, 2, St0) ->
     {[send,return],need_stack_frame(St0)};
-build_enter({remote,{atom,Mod},{atom,Name}}, Arity, St0) ->
+build_enter(#k_remote{mod=#k_atom{val=Mod},name=#k_atom{val=Name}}, Arity, St0) ->
     St1 = case trap_bif(Mod, Name, Arity) of
 	      true -> need_stack_frame(St0);
 	      false -> St0
 	  end,
     {[{call_ext_only,Arity,{extfunc,Mod,Name,Arity}}],St1};
-build_enter(Name, Arity, St0) when is_atom(Name) ->
+build_enter(#k_local{name=Name}, Arity, St0) when is_atom(Name) ->
     {Lbl,St1} = local_func_label(Name, Arity, St0),
     {[{call_only,Arity,{f,Lbl}}],St1}.
 
-enter_line({remote,{atom,Mod},{atom,Name}}, Arity, Le) ->
+enter_line(#k_remote{mod=#k_atom{val=Mod},name=#k_atom{val=Name}}, Arity, Le) ->
     case erl_bifs:is_safe(Mod, Name, Arity) of
 	false ->
 	    %% Tail-recursive call, possibly to a BIF.
@@ -1323,17 +1770,28 @@ trap_bif(erlang, group_leader, 2) -> true;
 trap_bif(erlang, exit, 2) -> true;
 trap_bif(_, _, _) -> false.
 
+%% bif_cg(#k_bif{}, Le, Vdb, StackReg, State) ->
+%%      {[Ainstr],StackReg,State}.
+%%  Generate code a BIF.
+
+bif_cg(#k_bif{op=#k_internal{name=Name},args=As,ret=Rs}, Le, Vdb, Bef, St) ->
+    internal_cg(Name, As, Rs, Le, Vdb, Bef, St);
+bif_cg(#k_bif{op=#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=Name}},
+              args=As,ret=Rs}, Le, Vdb, Bef, St) ->
+    Ar = length(As),
+    case is_gc_bif(Name, Ar) of
+	false ->
+            bif_cg(Name, As, Rs, Le, Vdb, Bef, St);
+	true ->
+            gc_bif_cg(Name, As, Rs, Le, Vdb, Bef, St)
+    end.
+
 %% internal_cg(Bif, [Arg], [Ret], Le, Vdb, StackReg, State) ->
 %%      {[Ainstr],StackReg,State}.
 
 internal_cg(bs_context_to_binary=Instr, [Src0], [], Le, Vdb, Bef, St0) ->
     [Src] = cg_reg_args([Src0], Bef),
-    case is_register(Src) of
-	false ->
-	    {[],clear_dead(Bef, Le#l.i, Vdb), St0};
-	true ->
-	    {[{Instr,Src}],clear_dead(Bef, Le#l.i, Vdb), St0}
-    end;
+    {[{Instr,Src}],clear_dead(Bef, Le#l.i, Vdb), St0};
 internal_cg(dsetelement, [Index0,Tuple0,New0], _Rs, Le, Vdb, Bef, St0) ->
     [New,Tuple,{integer,Index1}] = cg_reg_args([New0,Tuple0,Index0], Bef),
     Index = Index1-1,
@@ -1341,8 +1799,8 @@ internal_cg(dsetelement, [Index0,Tuple0,New0], _Rs, Le, Vdb, Bef, St0) ->
      clear_dead(Bef, Le#l.i, Vdb), St0};
 internal_cg(make_fun, [Func0,Arity0|As], Rs, Le, Vdb, Bef, St0) ->
     %% This behaves more like a function call.
-    {atom,Func} = Func0,
-    {integer,Arity} = Arity0,
+    #k_atom{val=Func} = Func0,
+    #k_int{val=Arity} = Arity0,
     {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
     Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
     {FuncLbl,St1} = local_func_label(Func, Arity, St0),
@@ -1355,6 +1813,11 @@ internal_cg(bs_init_writable=I, As, Rs, Le, Vdb, Bef, St) ->
     {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
     Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
     {Sis++[I],clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb),St};
+internal_cg(build_stacktrace=I, As, Rs, Le, Vdb, Bef, St) ->
+    %% This behaves like a function call.
+    {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
+    Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
+    {Sis++[I],clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb),St};
 internal_cg(raise, As, Rs, Le, Vdb, Bef, St) ->
     %% raise can be treated like a guard BIF.
     bif_cg(raise, As, Rs, Le, Vdb, Bef, St).
@@ -1362,7 +1825,7 @@ internal_cg(raise, As, Rs, Le, Vdb, Bef, St) ->
 %% bif_cg(Bif, [Arg], [Ret], Le, Vdb, StackReg, State) ->
 %%      {[Ainstr],StackReg,State}.
 
-bif_cg(Bif, As, [{var,V}], Le, Vdb, Bef, St0) ->
+bif_cg(Bif, As, [#k_var{name=V}], Le, Vdb, Bef, St0) ->
     Ars = cg_reg_args(As, Bef),
 
     %% If we are inside a catch and in a body (not in guard) and the
@@ -1400,7 +1863,7 @@ bif_cg(Bif, As, [{var,V}], Le, Vdb, Bef, St0) ->
 %% gc_bif_cg(Bif, [Arg], [Ret], Le, Vdb, StackReg, State) ->
 %%      {[Ainstr],StackReg,State}.
 
-gc_bif_cg(Bif, As, [{var,V}], Le, Vdb, Bef, St0) ->
+gc_bif_cg(Bif, As, [#k_var{name=V}], Le, Vdb, Bef, St0) ->
     Ars = cg_reg_args(As, Bef),
 
     %% If we are inside a catch and in a body (not in guard) and the
@@ -1446,7 +1909,7 @@ recv_loop_cg(Te, Rvar, Rm, Tes, Rs, Le, Vdb, Bef, St0) ->
 
 %% cg_recv_mesg( ) -> {[Ainstr],Aft,St}.
 
-cg_recv_mesg({var,R}, Rm, Tl, Bef, St0) ->
+cg_recv_mesg(#k_var{name=R}, Rm, Tl, Bef, St0) ->
     Int0 = Bef#sr{reg=put_reg(R, Bef#sr.reg)},
     Ret = fetch_reg(R, Int0#sr.reg),
     %% Int1 = clear_dead(Int0, I, Rm#l.vdb),
@@ -1456,22 +1919,22 @@ cg_recv_mesg({var,R}, Rm, Tl, Bef, St0) ->
 
 %% cg_recv_wait(Te, Tes, I, Vdb, Int2, St3) -> {[Ainstr],Aft,St}.
 
-cg_recv_wait({atom,infinity}, Tes, I, Bef, St0) ->
+cg_recv_wait(#k_atom{val=infinity}, #cg_block{anno=Le,es=Tes}, I, Bef, St0) ->
     %% We know that the 'after' body will never be executed.
     %% But to keep the stack and register information up to date,
     %% we will generate the code for the 'after' body, and then discard it.
-    Int1 = clear_dead(Bef, I, Tes#l.vdb),
-    {_,Int2,St1} = cg_block(Tes#l.ke, Tes#l.i, Tes#l.vdb,
-			      Int1#sr{reg=clear_regs(Int1#sr.reg)}, St0),
+    Int1 = clear_dead(Bef, I, Le#l.vdb),
+    {_,Int2,St1} = cg_block(Tes, Le#l.vdb,
+                            Int1#sr{reg=clear_regs(Int1#sr.reg)}, St0),
     {[{wait,{f,St1#cg.recv}}],Int2,St1};
-cg_recv_wait({integer,0}, Tes, _I, Bef, St0) ->
-    {Tis,Int,St1} = cg_block(Tes#l.ke, Tes#l.i, Tes#l.vdb, Bef, St0),
+cg_recv_wait(#k_int{val=0}, #cg_block{anno=Le,es=Tes}, _I, Bef, St0) ->
+    {Tis,Int,St1} = cg_block(Tes, Le#l.vdb, Bef, St0),
     {[timeout|Tis],Int,St1};
-cg_recv_wait(Te, Tes, I, Bef, St0) ->
+cg_recv_wait(Te, #cg_block{anno=Le,es=Tes}, I, Bef, St0) ->
     Reg = cg_reg_arg(Te, Bef),
     %% Must have empty registers here!  Bug if anything in registers.
-    Int0 = clear_dead(Bef, I, Tes#l.vdb),
-    {Tis,Int,St1} = cg_block(Tes#l.ke, Tes#l.i, Tes#l.vdb,
+    Int0 = clear_dead(Bef, I, Le#l.vdb),
+    {Tis,Int,St1} = cg_block(Tes, Le#l.vdb,
 			     Int0#sr{reg=clear_regs(Int0#sr.reg)}, St0),
     {[{wait_timeout,{f,St1#cg.recv},Reg},timeout] ++ Tis,Int,St1}.
 
@@ -1489,7 +1952,7 @@ try_cg(Ta, Vs, Tb, Evs, Th, Rs, Le, Vdb, Bef, St0) ->
     {B,St1} = new_label(St0),			%Body label
     {H,St2} = new_label(St1),			%Handler label
     {E,St3} = new_label(St2),			%End label
-    TryTag = Ta#l.i,
+    #l{i=TryTag} = get_kanno(Ta),
     Int1 = Bef#sr{stk=put_catch(TryTag, Bef#sr.stk)},
     TryReg = fetch_stack({catch_tag,TryTag}, Int1#sr.stk),
     {Ais,Int2,St4} = cg(Ta, Vdb, Int1, St3#cg{break=B,in_catch=true}),
@@ -1509,7 +1972,7 @@ try_cg(Ta, Vs, Tb, Evs, Th, Rs, Le, Vdb, Bef, St0) ->
 try_enter_cg(Ta, Vs, Tb, Evs, Th, Le, Vdb, Bef, St0) ->
     {B,St1} = new_label(St0),			%Body label
     {H,St2} = new_label(St1),			%Handler label
-    TryTag = Ta#l.i,
+    #l{i=TryTag} = get_kanno(Ta),
     Int1 = Bef#sr{stk=put_catch(TryTag, Bef#sr.stk)},
     TryReg = fetch_stack({catch_tag,TryTag}, Int1#sr.stk),
     {Ais,Int2,St3} = cg(Ta, Vdb, Int1, St2#cg{break=B,in_catch=true}),
@@ -1527,12 +1990,12 @@ try_enter_cg(Ta, Vs, Tb, Evs, Th, Le, Vdb, Bef, St0) ->
 
 %% catch_cg(CatchBlock, Ret, Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
 
-catch_cg(C, {var,R}, Le, Vdb, Bef, St0) ->
+catch_cg(#cg_block{es=C}, #k_var{name=R}, Le, Vdb, Bef, St0) ->
     {B,St1} = new_label(St0),
     CatchTag = Le#l.i,
     Int1 = Bef#sr{stk=put_catch(CatchTag, Bef#sr.stk)},
     CatchReg = fetch_stack({catch_tag,CatchTag}, Int1#sr.stk),
-    {Cis,Int2,St2} = cg_block(C, Le#l.i, Le#l.vdb, Int1,
+    {Cis,Int2,St2} = cg_block(C, Le#l.vdb, Int1,
 			      St1#cg{break=B,in_catch=true}),
     [] = Int2#sr.reg,				%Assertion.
     Aft = Int2#sr{reg=[{0,R}],stk=drop_catch(CatchTag, Int2#sr.stk)},
@@ -1541,8 +2004,8 @@ catch_cg(C, {var,R}, Le, Vdb, Bef, St0) ->
      clear_dead(Aft, Le#l.i, Vdb),
      St2#cg{break=St1#cg.break,in_catch=St1#cg.in_catch}}.
 
-%% set_cg([Var], Constr, Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
-%%  We have to be careful how a 'set' works. First the structure is
+%% put_cg([Var], Constr, Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
+%%  We have to be careful how a 'put' works. First the structure is
 %%  built, then it is filled and finally things can be cleared. The
 %%  annotation must reflect this and make sure that the return
 %%  variable is allocated first.
@@ -1550,13 +2013,14 @@ catch_cg(C, {var,R}, Le, Vdb, Bef, St0) ->
 %%  put_list and put_map are atomic instructions, both of
 %%  which can safely resuse one of the source registers as target.
 
-set_cg([{var,R}], {cons,Es}, Le, Vdb, Bef, St) ->
-    [S1,S2] = cg_reg_args(Es, Bef),
+put_cg([#k_var{name=R}], #k_cons{hd=Hd,tl=Tl}, Le, Vdb, Bef, St) ->
+    [S1,S2] = cg_reg_args([Hd,Tl], Bef),
     Int0 = clear_dead(Bef, Le#l.i, Vdb),
     Int1 = Int0#sr{reg=put_reg(R, Int0#sr.reg)},
     Ret = fetch_reg(R, Int1#sr.reg),
     {[{put_list,S1,S2,Ret}], Int1, St};
-set_cg([{var,R}], {binary,Segs}, Le, Vdb, Bef, #cg{bfail=Bfail}=St) ->
+put_cg([#k_var{name=R}], #k_binary{segs=Segs}, Le, Vdb, Bef,
+       #cg{bfail=Bfail}=St) ->
     %% At run-time, binaries are constructed in three stages:
     %% 1) First the size of the binary is calculated.
     %% 2) Then the binary is allocated.
@@ -1584,7 +2048,9 @@ set_cg([{var,R}], {binary,Segs}, Le, Vdb, Bef, #cg{bfail=Bfail}=St) ->
     {Sis++Code,Aft,St};
 
 %% Map: single variable key.
-set_cg([{var,R}], {map,Op,Map,[{map_pair,{var,_}=K,V}]}, Le, Vdb, Bef, St0) ->
+put_cg([#k_var{name=R}], #k_map{op=Op,var=Map,
+                                es=[#k_map_pair{key=#k_var{}=K,val=V}]},
+       Le, Vdb, Bef, St0) ->
     {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0),
 
     SrcReg = cg_reg_arg_prefer_y(Map, Int0),
@@ -1599,22 +2065,23 @@ set_cg([{var,R}], {map,Op,Map,[{map_pair,{var,_}=K,V}]}, Le, Vdb, Bef, St0) ->
     Aft = Aft0#sr{reg=put_reg(R, Aft0#sr.reg)},
     Target = fetch_reg(R, Aft#sr.reg),
 
-    {Is,St1} = set_cg_map(Line, Op, SrcReg, Target, Live, List, St0),
+    {Is,St1} = put_cg_map(Line, Op, SrcReg, Target, Live, List, St0),
     {Sis++Is,Aft,St1};
 
 %% Map: (possibly) multiple literal keys.
-set_cg([{var,R}], {map,Op,Map,Es}, Le, Vdb, Bef, St0) ->
+put_cg([#k_var{name=R}], #k_map{op=Op,var=Map,es=Es}, Le, Vdb, Bef, St0) ->
 
     %% assert key literals
-    [] = [Var||{map_pair,{var,_}=Var,_} <- Es],
+    [] = [Var || #k_map_pair{key=#k_var{}=Var} <- Es],
 
     {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0),
     SrcReg = cg_reg_arg_prefer_y(Map, Int0),
     Line = line(Le#l.a),
 
     %% fetch registers for values to be put into the map
-    Pairs = [{K,V} || {_,K,V} <- Es],
-    List = flatmap(fun({K,V}) -> [K,cg_reg_arg(V,Int0)] end, Pairs),
+    List = flatmap(fun(#k_map_pair{key=K,val=V}) ->
+                           [atomic(K),cg_reg_arg(V, Int0)]
+                   end, Es),
 
     Live = max_reg(Bef#sr.reg),
 
@@ -1623,16 +2090,16 @@ set_cg([{var,R}], {map,Op,Map,Es}, Le, Vdb, Bef, St0) ->
     Aft = Aft0#sr{reg=put_reg(R, Aft0#sr.reg)},
     Target = fetch_reg(R, Aft#sr.reg),
 
-    {Is,St1} = set_cg_map(Line, Op, SrcReg, Target, Live, List, St0),
+    {Is,St1} = put_cg_map(Line, Op, SrcReg, Target, Live, List, St0),
     {Sis++Is,Aft,St1};
 
 %% Everything else.
-set_cg([{var,R}], Con, Le, Vdb, Bef, St) ->
+put_cg([#k_var{name=R}], Con, Le, Vdb, Bef, St) ->
     %% Find a place for the return register first.
     Int = Bef#sr{reg=put_reg(R, Bef#sr.reg)},
     Ret = fetch_reg(R, Int#sr.reg),
     Ais = case Con of
-	      {tuple,Es} ->
+	      #k_tuple{es=Es} ->
 		  [{put_tuple,length(Es),Ret}] ++ cg_build_args(Es, Bef);
 	      Other ->
 		  [{move,cg_reg_arg(Other, Int),Ret}]
@@ -1640,7 +2107,7 @@ set_cg([{var,R}], Con, Le, Vdb, Bef, St) ->
     {Ais,clear_dead(Int, Le#l.i, Vdb),St}.
 
 
-set_cg_map(Line, Op0, SrcReg, Target, Live, List, St0) ->
+put_cg_map(Line, Op0, SrcReg, Target, Live, List, St0) ->
     Bfail = St0#cg.bfail,
     Fail = {f,St0#cg.bfail},
     Op = case Op0 of
@@ -1854,7 +2321,8 @@ cg_bin_opt_1([I|Is]) ->
 cg_bin_opt_1([]) ->
     [].
 
-cg_bin_put({bin_seg,[],S0,U,T,Fs,[E0,Next]}, Fail, Bef) ->
+cg_bin_put(#k_bin_seg{size=S0,unit=U,type=T,flags=Fs,seg=E0,next=Next},
+           Fail, Bef) ->
     S1 = cg_reg_arg(S0, Bef),
     E1 = cg_reg_arg(E0, Bef),
     {Format,Op} = case T of
@@ -1871,7 +2339,7 @@ cg_bin_put({bin_seg,[],S0,U,T,Fs,[E0,Next]}, Fail, Bef) ->
 	utf ->
 	    [{Op,Fail,{field_flags,Fs},E1}|cg_bin_put(Next, Fail, Bef)]
     end;
-cg_bin_put({bin_end,[]}, _, _) -> [].
+cg_bin_put(#k_bin_end{}, _, _) -> [].
 
 cg_build_args(As, Bef) ->
     [{put,cg_reg_arg(A, Bef)} || A <- As].
@@ -1891,13 +2359,12 @@ break_cg(Bs, Le, Vdb, Bef, St) ->
     {Ms ++ [{jump,{f,St#cg.break}}],
      Int#sr{reg=clear_regs(Int#sr.reg)},St}.
 
-guard_break_cg(Bs, Locked, #l{i=I}, Vdb, #sr{reg=Reg0}=Bef, St) ->
-    RegLocked = get_locked_regs(Reg0, Locked),
-    #sr{reg=Reg1} = Int = clear_dead(Bef#sr{reg=RegLocked}, I, Vdb),
+guard_break_cg(Bs, #l{i=I}, Vdb, #sr{reg=Reg0}=Bef, St) ->
+    #sr{reg=Reg1} = Int = clear_dead(Bef, I, Vdb),
     Reg2 = trim_free(Reg1),
     NumLocked = length(Reg2),
     Moves0 = gen_moves(Bs, Bef, NumLocked, []),
-    Moves = order_moves(Moves0, find_scratch_reg(RegLocked)),
+    Moves = order_moves(Moves0, find_scratch_reg(Reg0)),
     {BreakVars,_} = mapfoldl(fun(_, RegNum) ->
 				     {{RegNum,gbreakvar},RegNum+1}
 			     end, length(Reg2), Bs),
@@ -1905,31 +2372,17 @@ guard_break_cg(Bs, Locked, #l{i=I}, Vdb, #sr{reg=Reg0}=Bef, St) ->
     Aft = Int#sr{reg=Reg},
     {Moves ++ [{jump,{f,St#cg.break}}],Aft,St}.
 
-get_locked_regs([R|Rs0], Preserve) ->
-    case {get_locked_regs(Rs0, Preserve),R} of
-	{[],{_,V}} ->
-	    case lists:member(V, Preserve) of
-		true -> [R];
-		false -> []
-	    end;
-	{[],_} ->
-	    [];
-	{Rs,_} ->
-	    [R|Rs]
-    end;
-get_locked_regs([], _) -> [].
-
 %% cg_reg_arg(Arg0, Info) -> Arg
 %% cg_reg_args([Arg0], Info) -> [Arg]
 %%  Convert argument[s] into registers. Literal values are returned unchanged.
 
 cg_reg_args(As, Bef) -> [cg_reg_arg(A, Bef) || A <- As].
 
-cg_reg_arg({var,V}, Bef) -> fetch_var(V, Bef);
-cg_reg_arg(Literal, _) -> Literal.
+cg_reg_arg(#k_var{name=V}, Bef) -> fetch_var(V, Bef);
+cg_reg_arg(Literal, _) -> atomic(Literal).
 
-cg_reg_arg_prefer_y({var,V}, Bef) -> fetch_var_prefer_y(V, Bef);
-cg_reg_arg_prefer_y(Literal, _) -> Literal.
+cg_reg_arg_prefer_y(#k_var{name=V}, Bef) -> fetch_var_prefer_y(V, Bef);
+cg_reg_arg_prefer_y(Literal, _) -> atomic(Literal).
 
 %% cg_setup_call([Arg], Bef, Cur, Vdb) -> {[Instr],Aft}.
 %%  Do the complete setup for a call/enter.
@@ -1967,9 +2420,9 @@ cg_call_args(As, Bef, I, Vdb) ->
 
 load_arg_regs(Regs, As) -> load_arg_regs(Regs, As, 0).
 
-load_arg_regs([_|Rs], [{var,V}|As], I) -> [{I,V}|load_arg_regs(Rs, As, I+1)];
+load_arg_regs([_|Rs], [#k_var{name=V}|As], I) -> [{I,V}|load_arg_regs(Rs, As, I+1)];
 load_arg_regs([_|Rs], [A|As], I) -> [{I,A}|load_arg_regs(Rs, As, I+1)];
-load_arg_regs([], [{var,V}|As], I) -> [{I,V}|load_arg_regs([], As, I+1)];
+load_arg_regs([], [#k_var{name=V}|As], I) -> [{I,V}|load_arg_regs([], As, I+1)];
 load_arg_regs([], [A|As], I) -> [{I,A}|load_arg_regs([], As, I+1)];
 load_arg_regs(Rs, [], _) -> Rs.
 
@@ -2005,12 +2458,13 @@ move_unsaved([], _, Regs, Acc) -> {Acc,Regs}.
 
 gen_moves(As, Sr) -> gen_moves(As, Sr, 0, []).
 
-gen_moves([{var,V}|As], Sr, I, Acc) ->
+gen_moves([#k_var{name=V}|As], Sr, I, Acc) ->
     case fetch_var(V, Sr) of
 	{x,I} -> gen_moves(As, Sr, I+1, Acc);
 	Reg -> gen_moves(As, Sr, I+1, [{move,Reg,{x,I}}|Acc])
     end;
-gen_moves([A|As], Sr, I, Acc) ->
+gen_moves([A0|As], Sr, I, Acc) ->
+    A = atomic(A0),
     gen_moves(As, Sr, I+1, [{move,A,{x,I}}|Acc]);
 gen_moves([], _, _, Acc) -> lists:keysort(3, Acc).
 
@@ -2058,21 +2512,21 @@ break_up_cycle1(Dst, [M|Path], LastMove) ->
 %% clear_dead(Sr, Until, Vdb) -> Aft.
 %%  Remove all variables in Sr which have died AT ALL so far.
 
-clear_dead(Sr, Until, Vdb) ->
-    Sr#sr{reg=clear_dead_reg(Sr, Until, Vdb),
-	  stk=clear_dead_stk(Sr#sr.stk, Until, Vdb)}.
+clear_dead(#sr{stk=Stk}=Sr0, Until, Vdb) ->
+    Sr = Sr0#sr{reg=clear_dead_reg(Sr0, Until, Vdb),
+                stk=clear_dead_stk(Stk, Until, Vdb)},
+    reserve(Sr).
 
 clear_dead_reg(Sr, Until, Vdb) ->
-    Reg = [case R of
-            {_I,V} = IV ->
-                case vdb_find(V, Vdb) of
-                    {V,_,L} when L > Until -> IV;
-                    _ -> free		%Remove anything else
-                end;
-            {reserved,_I,_V} = Reserved -> Reserved;
-            free -> free
-        end || R <- Sr#sr.reg],
-    reserve(Sr#sr.res, Reg, Sr#sr.stk).
+    [case R of
+         {_I,V} = IV ->
+             case vdb_find(V, Vdb) of
+                 {V,_,L} when L > Until -> IV;
+                 _ -> free                      %Remove anything else
+             end;
+         {reserved,_I,_V}=Reserved -> Reserved;
+         free -> free
+     end || R <- Sr#sr.reg].
 
 clear_dead_stk(Stk, Until, Vdb) ->
     [case S of
@@ -2144,16 +2598,25 @@ adjust_stack(Bef, Fb, Lf, Vdb) ->
 
 save_stack(Stk0, Fb, Lf, Vdb) ->
     %% New variables that are in use but not on stack.
-    New = [VFL || {V,F,L} = VFL <- Vdb,
-		  F < Fb,
-		  L >= Lf,
-		  not on_stack(V, Stk0)],
+    New = new_not_on_stack(Stk0, Fb, Lf, Vdb),
+
     %% Add new variables that are not just dropped immediately.
     %% N.B. foldr works backwards from the end!!
     Saves = [V || {V,_,_} <- keysort(3, New)],
     Stk1 = foldr(fun (V, Stk) -> put_stack(V, Stk) end, Stk0, Saves),
     {Stk1,Saves}.
 
+%% new_not_on_stack(Stack, FirstBefore, LastFrom, Vdb) ->
+%%                 [{Variable,First,Last}]
+%%  Return information about all variables that are used past current
+%%  point and that are not already on the stack.
+
+new_not_on_stack(Stk, Fb, Lf, Vdb) ->
+    [VFL || {V,F,L} = VFL <- Vdb,
+            F < Fb,
+            L >= Lf,
+            not on_stack(V, Stk)].
+
 %% saves([SaveVar], Reg, Stk) -> [{move,Reg,Stk}].
 %%  Generate move instructions to save variables onto stack.  The
 %%  stack/reg info used is that after the new stack has been made.
@@ -2179,7 +2642,7 @@ fetch_var_prefer_y(V, #sr{reg=Reg,stk=Stk}) ->
     end.
 
 load_vars(Vs, Regs) ->
-    foldl(fun ({var,V}, Rs) -> put_reg(V, Rs) end, Regs, Vs).
+    foldl(fun (#k_var{name=V}, Rs) -> put_reg(V, Rs) end, Regs, Vs).
 
 %% put_reg(Val, Regs) -> Regs.
 %% find_reg(Val, Regs) -> {ok,r{R}} | error.
@@ -2259,10 +2722,6 @@ find_stack(_, [], _) -> error.
 
 on_stack(V, Stk) -> keymember(V, 1, Stk).
 
-is_register({x,_}) -> true;
-is_register({yy,_}) -> true;
-is_register(_) -> false.
-
 %% put_catch(CatchTag, Stack) -> Stack'
 %% drop_catch(CatchTag, Stack) -> Stack'
 %%  Special interface for putting and removing catch tags, to ensure that
@@ -2280,6 +2739,16 @@ put_catch(Tag, [Other|Stk], Acc) ->
 drop_catch(Tag, [{{catch_tag,Tag}}|Stk]) -> [free|Stk];
 drop_catch(Tag, [Other|Stk]) -> [Other|drop_catch(Tag, Stk)].
 
+%% atomic(Klit) -> Lit.
+%% atomic_list([Klit]) -> [Lit].
+
+atomic(#k_literal{val=V}) -> {literal,V};
+atomic(#k_int{val=I}) -> {integer,I};
+atomic(#k_float{val=F}) -> {float,F};
+atomic(#k_atom{val=A}) -> {atom,A};
+%%atomic(#k_char{val=C}) -> {char,C};
+atomic(#k_nil{}) -> nil.
+
 %% new_label(St) -> {L,St}.
 
 new_label(#cg{lcount=Next}=St) ->
@@ -2322,3 +2791,86 @@ flatmapfoldl(F, Accu0, [Hd|Tail]) ->
     {Rs,Accu2} = flatmapfoldl(F, Accu1, Tail),
     {R++Rs,Accu2};
 flatmapfoldl(_, Accu, []) -> {[],Accu}.
+
+%% Keep track of life time for variables.
+%%
+%% init_vars([{var,VarName}]) -> Vdb.
+%% new_vars([VarName], I, Vdb) -> Vdb.
+%% use_vars([VarName], I, Vdb) -> Vdb.
+%% add_var(VarName, F, L, Vdb) -> Vdb.
+%%
+%% The list of variable names for new_vars/3 and use_vars/3
+%% must be sorted.
+
+init_vars(Vs) ->
+    vdb_new(Vs).
+
+new_vars([], _, Vdb) -> Vdb;
+new_vars([V], I, Vdb) -> vdb_store_new(V, {V,I,I}, Vdb);
+new_vars(Vs, I, Vdb) -> vdb_update_vars(Vs, Vdb, I).
+
+use_vars([], _, Vdb) ->
+    Vdb;
+use_vars([V], I, Vdb) ->
+    case vdb_find(V, Vdb) of
+        {V,F,L} when I > L -> vdb_update(V, {V,F,I}, Vdb);
+        {V,_,_} -> Vdb;
+        error -> vdb_store_new(V, {V,I,I}, Vdb)
+    end;
+use_vars(Vs, I, Vdb) -> vdb_update_vars(Vs, Vdb, I).
+
+add_var(V, F, L, Vdb) ->
+    vdb_store_new(V, {V,F,L}, Vdb).
+
+%% vdb
+
+vdb_new(Vs) ->
+    ordsets:from_list([{V,0,0} || #k_var{name=V} <- Vs]).
+
+-type var() :: atom().
+
+-spec vdb_find(var(), [vdb_entry()]) -> 'error' | vdb_entry().
+
+vdb_find(V, Vdb) ->
+    case lists:keyfind(V, 1, Vdb) of
+        false -> error;
+        Vd -> Vd
+    end.
+
+vdb_update(V, Update, [{V,_,_}|Vdb]) ->
+    [Update|Vdb];
+vdb_update(V, Update, [Vd|Vdb]) ->
+    [Vd|vdb_update(V, Update, Vdb)].
+
+vdb_store_new(V, New, [{V1,_,_}=Vd|Vdb]) when V > V1 ->
+    [Vd|vdb_store_new(V, New, Vdb)];
+vdb_store_new(V, New, [{V1,_,_}|_]=Vdb) when V < V1 ->
+    [New|Vdb];
+vdb_store_new(_, New, []) -> [New].
+
+vdb_update_vars([V|_]=Vs, [{V1,_,_}=Vd|Vdb], I) when V > V1 ->
+    [Vd|vdb_update_vars(Vs, Vdb, I)];
+vdb_update_vars([V|Vs], [{V1,_,_}|_]=Vdb, I) when V < V1 ->
+    %% New variable.
+    [{V,I,I}|vdb_update_vars(Vs, Vdb, I)];
+vdb_update_vars([V|Vs], [{_,F,L}=Vd|Vdb], I) ->
+    %% Existing variable.
+    if
+        I > L -> [{V,F,I}|vdb_update_vars(Vs, Vdb, I)];
+        true ->  [Vd|vdb_update_vars(Vs, Vdb, I)]
+    end;
+vdb_update_vars([V|Vs], [], I) ->
+    %% New variable.
+    [{V,I,I}|vdb_update_vars(Vs, [], I)];
+vdb_update_vars([], Vdb, _) -> Vdb.
+
+%% vdb_sub(Min, Max, Vdb) -> Vdb.
+%%  Extract variables which are used before and after Min.  Lock
+%%  variables alive after Max.
+
+vdb_sub(Min, Max, Vdb) ->
+    [ if L >= Max -> {V,F,locked};
+         true -> Vd
+      end || {V,F,L}=Vd <- Vdb,
+             F < Min,
+             L >= Min ].
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index 20cb3343fb..6029b91cdc 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -920,8 +920,9 @@ try_exception(Ecs0, St0) ->
     %% Note that Tag is not needed for rethrow - it is already in Info.
     {Evs,St1} = new_vars(3, St0), % Tag, Value, Info
     {Ecs1,Ceps,St2} = clauses(Ecs0, St1),
+    Ecs2 = try_build_stacktrace(Ecs1, hd(Evs)),
     [_,Value,Info] = Evs,
-    LA = case Ecs1 of
+    LA = case Ecs2 of
 	     [] -> [];
 	     [C|_] -> get_lineno_anno(C)
 	 end,
@@ -930,7 +931,7 @@ try_exception(Ecs0, St0) ->
 		  body=[#iprimop{anno=#a{},       %Must have an #a{}
 				 name=#c_literal{val=raise},
 				 args=[Info,Value]}]},
-    Hs = [#icase{anno=#a{anno=LA},args=[c_tuple(Evs)],clauses=Ecs1,fc=Ec}],
+    Hs = [#icase{anno=#a{anno=LA},args=[c_tuple(Evs)],clauses=Ecs2,fc=Ec}],
     {Evs,Ceps++Hs,St2}.
 
 try_after(As, St0) ->
@@ -946,6 +947,25 @@ try_after(As, St0) ->
     Hs = [#icase{anno=#a{},args=[c_tuple(Evs)],clauses=[],fc=Ec}],
     {Evs,Hs,St1}.
 
+try_build_stacktrace([#iclause{pats=Ps0,body=B0}=C0|Cs], RawStk) ->
+    [#c_tuple{es=[Class,Exc,Stk]}=Tup] = Ps0,
+    case Stk of
+        #c_var{name='_'} ->
+            %% Stacktrace variable is not used. Nothing to do.
+            [C0|try_build_stacktrace(Cs, RawStk)];
+        _ ->
+            %% Add code to build the stacktrace.
+            Ps = [Tup#c_tuple{es=[Class,Exc,RawStk]}],
+            Call = #iprimop{anno=#a{},
+                            name=#c_literal{val=build_stacktrace},
+                            args=[RawStk]},
+            Iset = #iset{var=Stk,arg=Call},
+            B = [Iset|B0],
+            C = C0#iclause{pats=Ps,body=B},
+            [C|try_build_stacktrace(Cs, RawStk)]
+    end;
+try_build_stacktrace([], _) -> [].
+
 %% expr_bin([ArgExpr], St) -> {[Arg],[PreExpr],St}.
 %%  Flatten the arguments of a bin. Do this straight left to right!
 %%  Note that ibinary needs to have its annotation wrapped in a #a{}
@@ -2462,9 +2482,11 @@ cexpr(#icase{anno=A,args=Largs,clauses=Lcs,fc=Lfc}, As, St0) ->
 cexpr(#ireceive1{anno=A,clauses=Lcs}, As, St0) ->
     Exp = intersection(A#a.ns, As),		%Exports
     {Ccs,St1} = cclauses(Lcs, Exp, St0),
+    True = #c_literal{val=true},
+    Action = core_lib:make_values(lists:duplicate(1+length(Exp), True)),
     {#c_receive{anno=A#a.anno,
 		clauses=Ccs,
-		timeout=#c_literal{val=infinity},action=#c_literal{val=true}},
+		timeout=#c_literal{val=infinity},action=Action},
      Exp,A#a.us,St1};
 cexpr(#ireceive2{anno=A,clauses=Lcs,timeout=Lto,action=Les}, As, St0) ->
     Exp = intersection(A#a.ns, As),		%Exports
diff --git a/lib/compiler/src/v3_kernel.erl b/lib/compiler/src/v3_kernel.erl
index 1fc05109c5..fd73e5a7dc 100644
--- a/lib/compiler/src/v3_kernel.erl
+++ b/lib/compiler/src/v3_kernel.erl
@@ -82,7 +82,8 @@
 -export([module/2,format_error/1]).
 
 -import(lists, [map/2,foldl/3,foldr/3,mapfoldl/3,splitwith/2,member/2,
-		keymember/3,keyfind/3,partition/2,droplast/1,last/1,sort/1]).
+		keymember/3,keyfind/3,partition/2,droplast/1,last/1,sort/1,
+                reverse/1]).
 -import(ordsets, [add_element/2,del_element/2,union/2,union/1,subtract/2]).
 -import(cerl, [c_tuple/1]).
 
@@ -107,6 +108,7 @@ copy_anno(Kdst, Ksrc) ->
 -record(iclause, {anno=[],isub,osub,pats,guard,body}).
 -record(ireceive_accept, {anno=[],arg}).
 -record(ireceive_next, {anno=[],arg}).
+-record(ignored, {anno=[]}).
 
 -type warning() :: term().	% XXX: REFINE
 
@@ -159,11 +161,9 @@ function({#c_var{name={F,Arity}=FA},Body}, St0) ->
 	{#ifun{anno=Ab,vars=Kvs,body=B0},[],St2} = expr(Body, new_sub(), St1),
 	{B1,_,St3} = ubody(B0, return, St2),
 	%%B1 = B0, St3 = St2,				%Null second pass
-	{#k_fdef{anno=#k{us=[],ns=[],a=Ab},
-		 func=F,arity=Arity,vars=Kvs,body=B1},St3}
+        {make_fdef(#k{us=[],ns=[],a=Ab}, F, Arity, Kvs, B1),St3}
     catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
+        Class:Error:Stack ->
 	    io:fwrite("Function: ~w/~w\n", [F,Arity]),
 	    erlang:raise(Class, Error, Stack)
     end.
@@ -489,7 +489,7 @@ make_alt(First0, Then0) ->
     Then1 = pre_seq(droplast(Then0), last(Then0)),
     First2 = make_protected(First1),
     Then2 = make_protected(Then1),
-    Body = #k_atom{val=ignored},
+    Body = #ignored{},
     First3 = #k_guard_clause{guard=First2,body=Body},
     Then3 = #k_guard_clause{guard=Then2,body=Body},
     First = #k_guard{clauses=[First3]},
@@ -1589,23 +1589,18 @@ match_var([U|Us], Cs0, Def, St) ->
 %%  according to type, the order is really irrelevant but tries to be
 %%  smart.
 
-match_con(Us, [C], Def, St) ->
-    %% There is only one clause. We can keep literal tuples and
-    %% lists, but we must convert []/integer/float/atom literals
-    %% to the proper record (#k_nil{} and so on).
-    Cs = [expand_pat_lit_clause(C, false)],
-    match_con_1(Us, Cs, Def, St);
 match_con(Us, Cs0, Def, St) ->
-    %% More than one clause. Remove literals at the top level.
-    Cs = [expand_pat_lit_clause(C, true) || C <- Cs0],
+    %% Expand literals at the top level.
+    Cs = [expand_pat_lit_clause(C) || C <- Cs0],
     match_con_1(Us, Cs, Def, St).
 
 match_con_1([U|_Us] = L, Cs, Def, St0) ->
     %% Extract clauses for different constructors (types).
     %%ok = io:format("match_con ~p~n", [Cs]),
-    Ttcs = select_types([k_binary], Cs) ++ select_bin_con(Cs) ++
-	select_types([k_cons,k_tuple,k_map,k_atom,k_float,k_int,
-		      k_nil,k_literal], Cs),
+    Ttcs0 = select_types([k_binary], Cs) ++ select_bin_con(Cs) ++
+        select_types([k_cons,k_tuple,k_map,k_atom,k_float,
+                      k_int,k_nil], Cs),
+    Ttcs = opt_single_valued(Ttcs0),
     %%ok = io:format("ttcs = ~p~n", [Ttcs]),
     {Scs,St1} =
 	mapfoldl(fun ({T,Tcs}, St) ->
@@ -1618,28 +1613,14 @@ match_con_1([U|_Us] = L, Cs, Def, St0) ->
 
 select_types(Types, Cs) ->
     [{T,Tcs} || T <- Types, begin Tcs = select(T, Cs), Tcs =/= [] end].
-    
-expand_pat_lit_clause(#iclause{pats=[#ialias{pat=#k_literal{anno=A,val=Val}}=Alias|Ps]}=C, B) ->
-    P = case B of
-	    true -> expand_pat_lit(Val, A);
-	    false -> literal(Val, A)
-	end,
+
+expand_pat_lit_clause(#iclause{pats=[#ialias{pat=#k_literal{anno=A,val=Val}}=Alias|Ps]}=C) ->
+    P = expand_pat_lit(Val, A),
     C#iclause{pats=[Alias#ialias{pat=P}|Ps]};
-expand_pat_lit_clause(#iclause{pats=[#k_literal{anno=A,val=Val}|Ps]}=C, B) ->
-    P = case B of
-	    true -> expand_pat_lit(Val, A);
-	    false -> literal(Val, A)
-	end,
+expand_pat_lit_clause(#iclause{pats=[#k_literal{anno=A,val=Val}|Ps]}=C) ->
+    P = expand_pat_lit(Val, A),
     C#iclause{pats=[P|Ps]};
-expand_pat_lit_clause(#iclause{pats=[#k_binary{anno=A,segs=#k_bin_end{}}|Ps]}=C, B) ->
-    case B of
-	true ->
-	    C;
-	false ->
-	    P = #k_literal{anno=A,val = <<>>},
-	    C#iclause{pats=[P|Ps]}
-    end;
-expand_pat_lit_clause(C, _) -> C.
+expand_pat_lit_clause(C) -> C.
 
 expand_pat_lit([H|T], A) ->
     #k_cons{anno=A,hd=literal(H, A),tl=literal(T, A)};
@@ -1659,6 +1640,107 @@ literal(Val, A) when is_atom(Val) ->
 literal(Val, A) when is_list(Val); is_tuple(Val) ->
     #k_literal{anno=A,val=Val}.
 
+%% opt_singled_valued([{Type,Clauses}]) -> [{Type,Clauses}].
+%%  If a type only has one clause and if the pattern is literal,
+%%  the matching can be done more efficiently by directly comparing
+%%  with the literal (that is especially true for binaries).
+
+opt_single_valued(Ttcs) ->
+    opt_single_valued(Ttcs, [], []).
+
+opt_single_valued([{_,[#iclause{pats=[P0|Ps]}=Tc]}=Ttc|Ttcs], TtcAcc, LitAcc) ->
+    try combine_lit_pat(P0) of
+        P ->
+            LitTtc = Tc#iclause{pats=[P|Ps]},
+            opt_single_valued(Ttcs, TtcAcc, [LitTtc|LitAcc])
+    catch
+        not_possible ->
+            opt_single_valued(Ttcs, [Ttc|TtcAcc], LitAcc)
+    end;
+opt_single_valued([Ttc|Ttcs], TtcAcc, LitAcc) ->
+    opt_single_valued(Ttcs, [Ttc|TtcAcc], LitAcc);
+opt_single_valued([], TtcAcc, []) ->
+    reverse(TtcAcc);
+opt_single_valued([], TtcAcc, LitAcc) ->
+    Literals = {k_literal,reverse(LitAcc)},
+    %% Test the literals as early as possible.
+    case reverse(TtcAcc) of
+        [{k_binary,_}=Bin|Ttcs] ->
+            %% The delayed creation of sub binaries requires
+            %% bs_start_match2 to be the first instruction in the
+            %% function.
+            [Bin,Literals|Ttcs];
+        Ttcs ->
+            [Literals|Ttcs]
+    end.
+
+combine_lit_pat(#ialias{pat=Pat0}=Alias) ->
+    Pat = combine_lit_pat(Pat0),
+    Alias#ialias{pat=Pat};
+combine_lit_pat(Pat) ->
+    case do_combine_lit_pat(Pat) of
+        #k_literal{val=Val} when is_atom(Val) ->
+            throw(not_possible);
+        #k_literal{val=Val} when is_number(Val) ->
+            throw(not_possible);
+        #k_literal{val=[]} ->
+            throw(not_possible);
+        #k_literal{}=Lit ->
+            Lit
+    end.
+
+do_combine_lit_pat(#k_atom{anno=A,val=Val}) ->
+    #k_literal{anno=A,val=Val};
+do_combine_lit_pat(#k_float{anno=A,val=Val}) ->
+    #k_literal{anno=A,val=Val};
+do_combine_lit_pat(#k_int{anno=A,val=Val}) ->
+    #k_literal{anno=A,val=Val};
+do_combine_lit_pat(#k_nil{anno=A}) ->
+    #k_literal{anno=A,val=[]};
+do_combine_lit_pat(#k_binary{anno=A,segs=Segs}) ->
+    Bin = combine_bin_segs(Segs),
+    #k_literal{anno=A,val=Bin};
+do_combine_lit_pat(#k_cons{anno=A,hd=Hd0,tl=Tl0}) ->
+    #k_literal{val=Hd} = do_combine_lit_pat(Hd0),
+    #k_literal{val=Tl} = do_combine_lit_pat(Tl0),
+    #k_literal{anno=A,val=[Hd|Tl]};
+do_combine_lit_pat(#k_literal{}=Lit) ->
+    Lit;
+do_combine_lit_pat(#k_tuple{anno=A,es=Es0}) ->
+    Es = [begin
+              #k_literal{val=Lit} = do_combine_lit_pat(El),
+              Lit
+          end || El <- Es0],
+    #k_literal{anno=A,val=list_to_tuple(Es)};
+do_combine_lit_pat(_) ->
+    throw(not_possible).
+
+combine_bin_segs(#k_bin_seg{size=Size0,unit=Unit,type=integer,
+                            flags=[unsigned,big],seg=Seg,next=Next}) ->
+    #k_literal{val=Size1} = do_combine_lit_pat(Size0),
+    #k_literal{val=Int} = do_combine_lit_pat(Seg),
+    Size = Size1 * Unit,
+    if
+        0 < Size, Size < 64 ->
+            Bin = <<Int:Size>>,
+            case Bin of
+                <<Int:Size>> ->
+                    NextBin = combine_bin_segs(Next),
+                    <<Bin/bits,NextBin/bits>>;
+                _ ->
+                    %% The integer Int does not fit in the segment,
+                    %% thus it will not match.
+                    throw(not_possible)
+            end;
+        true ->
+            %% Avoid creating huge binary literals.
+            throw(not_possible)
+    end;
+combine_bin_segs(#k_bin_end{}) ->
+    <<>>;
+combine_bin_segs(_) ->
+    throw(not_possible).
+
 %% select_bin_con([Clause]) -> [{Type,[Clause]}].
 %%  Extract clauses for the k_bin_seg constructor.  As k_bin_seg
 %%  matching can overlap, the k_bin_seg constructors cannot be
@@ -2143,7 +2225,9 @@ ubody(E, return, St0) ->
 	    {Ea,Pa,St1} = force_atomic(E, St0),
 	    ubody(pre_seq(Pa, #ivalues{args=[Ea]}), return, St1)
     end;
-ubody(E, {break,_Rs} = Break, St0) ->
+ubody(#ignored{}, {break,_} = Break, St) ->
+    ubody(#ivalues{args=[]}, Break, St);
+ubody(E, {break,[_]} = Break, St0) ->
     %%ok = io:fwrite("ubody ~w:~p~n", [?LINE,{E,Br}]),
     %% Exiting expressions need no trailing break.
     case is_exit_expr(E) of
@@ -2151,6 +2235,16 @@ ubody(E, {break,_Rs} = Break, St0) ->
 	false ->
 	    {Ea,Pa,St1} = force_atomic(E, St0),
 	    ubody(pre_seq(Pa, #ivalues{args=[Ea]}), Break, St1)
+    end;
+ubody(E, {break,Rs}=Break, St0) ->
+    case is_exit_expr(E) of
+        true ->
+            uexpr(E, return, St0);
+        false ->
+            {Vs,St1} = new_vars(length(Rs), St0),
+            Iset = #iset{vars=Vs,arg=E},
+            PreSeq = pre_seq([Iset], #ivalues{args=Vs}),
+            ubody(PreSeq, Break, St1)
     end.
 
 iletrec_funs(#iletrec{defs=Fs}, St0) ->
@@ -2179,9 +2273,8 @@ iletrec_funs_gen(Fs, FreeVs, St) ->
 		  Arity0 = length(Vs),
 		  {Fb1,_,Lst1} = ubody(Fb0, return, Lst0#kern{ff={N,Arity0}}),
 		  Arity = Arity0 + length(FreeVs),
-		  Fun = #k_fdef{anno=#k{us=[],ns=[],a=Fa},
-				func=N,arity=Arity,
-				vars=Vs ++ FreeVs,body=Fb1},
+                  Fun = make_fdef(#k{us=[],ns=[],a=Fa}, N, Arity,
+                                  Vs++FreeVs, Fb1),
 		  Lst1#kern{funs=[Fun|Lst1#kern.funs]}
 	  end, St, Fs).
 
@@ -2325,8 +2418,7 @@ uexpr(#ifun{anno=A,vars=Vs,body=B0}, {break,Rs}, St0) ->
 		%% No id annotation. Must invent a fun name.
 		new_fun_name(St1)
 	end,
-    Fun = #k_fdef{anno=#k{us=[],ns=[],a=A},func=Fname,arity=Arity,
-		  vars=Vs ++ Fvs,body=B1},
+    Fun = make_fdef(#k{us=[],ns=[],a=A}, Fname, Arity, Vs++Fvs, B1),
     {#k_bif{anno=#k{us=Free,ns=lit_list_vars(Rs),a=A},
 	    op=#k_internal{name=make_fun,arity=length(Free)+2},
 	    args=[#k_atom{val=Fname},#k_int{val=Arity}|Fvs],
@@ -2343,6 +2435,16 @@ uexpr(Lit, {break,Rs0}, St0) ->
 add_local_function(_, #kern{funs=ignore}=St) -> St;
 add_local_function(F, #kern{funs=Funs}=St) -> St#kern{funs=[F|Funs]}.
 
+%% Make a #k_fdef{}, making sure that the body is always a #k_match{}.
+make_fdef(Anno, Name, Arity, Vs, #k_match{}=Body) ->
+    #k_fdef{anno=Anno,func=Name,arity=Arity,vars=Vs,body=Body};
+make_fdef(Anno, Name, Arity, Vs, Body) ->
+    Ka = get_kanno(Body),
+    Match = #k_match{anno=#k{us=Ka#k.us,ns=[],a=Ka#k.a},
+                     vars=Vs,body=Body,ret=[]},
+    #k_fdef{anno=Anno,func=Name,arity=Arity,vars=Vs,body=Match}.
+
+
 %% handle_reuse_annos([#k_var{}], State) -> State.
 %%  In general, it is only safe to reuse a variable for a match context
 %%  if the original value of the variable will no longer be needed.
diff --git a/lib/compiler/src/v3_life.erl b/lib/compiler/src/v3_life.erl
deleted file mode 100644
index be3ade47ff..0000000000
--- a/lib/compiler/src/v3_life.erl
+++ /dev/null
@@ -1,468 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-%% Purpose : Convert annotated kernel expressions to annotated beam format.
-
-%% This module creates beam format annotated with variable lifetime
-%% information.  Each thing is given an index and for each variable we
-%% store the first and last index for its occurrence.  The variable
-%% database, VDB, attached to each thing is only relevant internally
-%% for that thing.
-%%
-%% For nested things like matches the numbering continues locally and
-%% the VDB for that thing refers to the variable usage within that
-%% thing.  Variables which live through a such a thing are internally
-%% given a very large last index.  Internally the indexes continue
-%% after the index of that thing.  This creates no problems as the
-%% internal variable info never escapes and externally we only see
-%% variable which are alive both before or after.
-%%
-%% This means that variables never "escape" from a thing and the only
-%% way to get values from a thing is to "return" them, with 'break' or
-%% 'return'.  Externally these values become the return values of the
-%% thing.  This is no real limitation as most nested things have
-%% multiple threads so working out a common best variable usage is
-%% difficult.
-
--module(v3_life).
-
--export([module/2]).
-
--export([vdb_find/2]).
-
--import(lists, [member/2,map/2,reverse/1,sort/1]).
--import(ordsets, [add_element/2,intersection/2,union/2]).
-
--include("v3_kernel.hrl").
--include("v3_life.hrl").
-
--type fa() :: {atom(),arity()}.
-
-%% These are not defined in v3_kernel.hrl.
-get_kanno(Kthing) -> element(2, Kthing).
-%%set_kanno(Kthing, Anno) -> setelement(2, Kthing, Anno).
-
--spec module(#k_mdef{}, [compile:option()]) ->
-                    {'ok',{module(),[fa()],[_],[_]}}.
-
-module(#k_mdef{name=M,exports=Es,attributes=As,body=Fs0}, _Opts) ->
-    Fs1 = functions(Fs0, []),
-    {ok,{M,Es,As,Fs1}}.
-
-functions([F|Fs], Acc) ->
-    functions(Fs, [function(F)|Acc]);
-functions([], Acc) -> reverse(Acc).
-
-%% function(Kfunc) -> Func.
-
-function(#k_fdef{anno=#k{a=Anno},func=F,arity=Ar,vars=Vs,body=Kb}) ->
-    try
-	As = var_list(Vs),
-	Vdb0 = init_vars(As),
-	%% Force a top-level match!
-	B0 = case Kb of
-		 #k_match{} -> Kb;
-		 _ ->
-		     Ka = get_kanno(Kb),
-		     #k_match{anno=#k{us=Ka#k.us,ns=[],a=Ka#k.a},
-			      vars=Vs,body=Kb,ret=[]}
-	     end,
-	{B1,_,Vdb1} = body(B0, 1, Vdb0),
-	{function,F,Ar,As,B1,Vdb1,Anno}
-    catch
-	Class:Error ->
-	    Stack = erlang:get_stacktrace(),
-	    io:fwrite("Function: ~w/~w\n", [F,Ar]),
-	    erlang:raise(Class, Error, Stack)
-    end.
-
-%% body(Kbody, I, Vdb) -> {[Expr],MaxI,Vdb}.
-%%  Handle a body.
-
-body(#k_seq{arg=Ke,body=Kb}, I, Vdb0) ->
-    %%ok = io:fwrite("life ~w:~p~n", [?LINE,{Ke,I,Vdb0}]),
-    A = get_kanno(Ke),
-    Vdb1 = use_vars(union(A#k.us, A#k.ns), I, Vdb0),
-    {Es,MaxI,Vdb2} = body(Kb, I+1, Vdb1),
-    E = expr(Ke, I, Vdb2),
-    {[E|Es],MaxI,Vdb2};
-body(Ke, I, Vdb0) ->
-    %%ok = io:fwrite("life ~w:~p~n", [?LINE,{Ke,I,Vdb0}]),
-    A = get_kanno(Ke),
-    Vdb1 = use_vars(union(A#k.us, A#k.ns), I, Vdb0),
-    E = expr(Ke, I, Vdb1),
-    {[E],I,Vdb1}.
-
-%% protected(Kprotected, I, Vdb) -> Protected.
-%%  Only used in guards.
-
-protected(#k_protected{anno=A,arg=Ts,ret=Rs}, I, Vdb) ->
-    %% Lock variables that are alive before try and used afterwards.
-    %% Don't lock variables that are only used inside the protected
-    %% expression.
-    Pdb0 = vdb_sub(I, I+1, Vdb),
-    {T,MaxI,Pdb1} = body(Ts, I+1, Pdb0),
-    Pdb2 = use_vars(A#k.ns, MaxI+1, Pdb1),	%Save "return" values
-    #l{ke={protected,T,var_list(Rs)},i=I,a=A#k.a,vdb=Pdb2}.
-
-%% expr(Kexpr, I, Vdb) -> Expr.
-
-expr(#k_test{anno=A,op=Op,args=As,inverted=Inverted}, I, _Vdb) ->
-    #l{ke={test,test_op(Op),atomic_list(As),Inverted},i=I,a=A#k.a};
-expr(#k_call{anno=A,op=Op,args=As,ret=Rs}, I, _Vdb) ->
-    #l{ke={call,call_op(Op),atomic_list(As),var_list(Rs)},i=I,a=A#k.a};
-expr(#k_enter{anno=A,op=Op,args=As}, I, _Vdb) ->
-    #l{ke={enter,call_op(Op),atomic_list(As)},i=I,a=A#k.a};
-expr(#k_bif{anno=A,op=Op,args=As,ret=Rs}, I, _Vdb) ->
-    Bif = k_bif(A, Op, As, Rs),
-    #l{ke=Bif,i=I,a=A#k.a};
-expr(#k_match{anno=A,body=Kb,ret=Rs}, I, Vdb) ->
-    %% Work out imported variables which need to be locked.
-    Mdb = vdb_sub(I, I+1, Vdb),
-    M = match(Kb, A#k.us, I+1, [], Mdb),
-    #l{ke={match,M,var_list(Rs)},i=I,vdb=use_vars(A#k.us, I+1, Mdb),a=A#k.a};
-expr(#k_guard_match{anno=A,body=Kb,ret=Rs}, I, Vdb) ->
-    %% Work out imported variables which need to be locked.
-    Mdb = vdb_sub(I, I+1, Vdb),
-    M = match(Kb, A#k.us, I+1, [], Mdb),
-    #l{ke={guard_match,M,var_list(Rs)},i=I,vdb=use_vars(A#k.us, I+1, Mdb),a=A#k.a};
-expr(#k_try{}=Try, I, Vdb) ->
-    body_try(Try, I, Vdb);
-expr(#k_protected{}=Protected, I, Vdb) ->
-    protected(Protected, I, Vdb);
-expr(#k_try_enter{anno=A,arg=Ka,vars=Vs,body=Kb,evars=Evs,handler=Kh}, I, Vdb) ->
-    %% Lock variables that are alive before the catch and used afterwards.
-    %% Don't lock variables that are only used inside the try.
-    Tdb0 = vdb_sub(I, I+1, Vdb),
-    %% This is the tricky bit. Lock variables in Arg that are used in
-    %% the body and handler. Add try tag 'variable'.
-    Ab = get_kanno(Kb),
-    Ah = get_kanno(Kh),
-    Tdb1 = use_vars(union(Ab#k.us, Ah#k.us), I+3, Tdb0),
-    Tdb2 = vdb_sub(I, I+2, Tdb1),
-    Vnames = fun (Kvar) -> Kvar#k_var.name end,	%Get the variable names
-    {Aes,_,Adb} = body(Ka, I+2, add_var({catch_tag,I+1}, I+1, 1000000, Tdb2)),
-    {Bes,_,Bdb} = body(Kb, I+4, new_vars(sort(map(Vnames, Vs)), I+3, Tdb2)),
-    {Hes,_,Hdb} = body(Kh, I+4, new_vars(sort(map(Vnames, Evs)), I+3, Tdb2)),
-    #l{ke={try_enter,#l{ke={block,Aes},i=I+1,vdb=Adb,a=[]},
-	   var_list(Vs),#l{ke={block,Bes},i=I+3,vdb=Bdb,a=[]},
-	   var_list(Evs),#l{ke={block,Hes},i=I+3,vdb=Hdb,a=[]}},
-       i=I,vdb=Tdb1,a=A#k.a};
-expr(#k_catch{anno=A,body=Kb,ret=[R]}, I, Vdb) ->
-    %% Lock variables that are alive before the catch and used afterwards.
-    %% Don't lock variables that are only used inside the catch.
-    %% Add catch tag 'variable'.
-    Cdb0 = vdb_sub(I, I+1, Vdb),
-    {Es,_,Cdb1} = body(Kb, I+1, add_var({catch_tag,I}, I, locked, Cdb0)),
-    #l{ke={'catch',Es,variable(R)},i=I,vdb=Cdb1,a=A#k.a};
-expr(#k_receive{anno=A,var=V,body=Kb,timeout=T,action=Ka,ret=Rs}, I, Vdb) ->
-    %% Work out imported variables which need to be locked.
-    Rdb = vdb_sub(I, I+1, Vdb),
-    M = match(Kb, add_element(V#k_var.name, A#k.us), I+1, [],
-	      new_vars([V#k_var.name], I, Rdb)),
-    {Tes,_,Adb} = body(Ka, I+1, Rdb),
-    #l{ke={receive_loop,atomic(T),variable(V),M,
-	   #l{ke=Tes,i=I+1,vdb=Adb,a=[]},var_list(Rs)},
-       i=I,vdb=use_vars(A#k.us, I+1, Vdb),a=A#k.a};
-expr(#k_receive_accept{anno=A}, I, _Vdb) ->
-    #l{ke=receive_accept,i=I,a=A#k.a};
-expr(#k_receive_next{anno=A}, I, _Vdb) ->
-    #l{ke=receive_next,i=I,a=A#k.a};
-expr(#k_put{anno=A,arg=Arg,ret=Rs}, I, _Vdb) ->
-    #l{ke={set,var_list(Rs),literal(Arg, [])},i=I,a=A#k.a};
-expr(#k_break{anno=A,args=As}, I, _Vdb) ->
-    #l{ke={break,atomic_list(As)},i=I,a=A#k.a};
-expr(#k_guard_break{anno=A,args=As}, I, Vdb) ->
-    Locked = [V || {V,_,_} <- Vdb],
-    #l{ke={guard_break,atomic_list(As),Locked},i=I,a=A#k.a};
-expr(#k_return{anno=A,args=As}, I, _Vdb) ->
-    #l{ke={return,atomic_list(As)},i=I,a=A#k.a}.
-
-body_try(#k_try{anno=A,arg=Ka,vars=Vs,body=Kb,evars=Evs,handler=Kh,ret=Rs},
-	 I, Vdb) ->
-    %% Lock variables that are alive before the catch and used afterwards.
-    %% Don't lock variables that are only used inside the try.
-    Tdb0 = vdb_sub(I, I+1, Vdb),
-    %% This is the tricky bit. Lock variables in Arg that are used in
-    %% the body and handler. Add try tag 'variable'.
-    Ab = get_kanno(Kb),
-    Ah = get_kanno(Kh),
-    Tdb1 = use_vars(union(Ab#k.us, Ah#k.us), I+3, Tdb0),
-    Tdb2 = vdb_sub(I, I+2, Tdb1),
-    Vnames = fun (Kvar) -> Kvar#k_var.name end,	%Get the variable names
-    {Aes,_,Adb} = body(Ka, I+2, add_var({catch_tag,I+1}, I+1, locked, Tdb2)),
-    {Bes,_,Bdb} = body(Kb, I+4, new_vars(sort(map(Vnames, Vs)), I+3, Tdb2)),
-    {Hes,_,Hdb} = body(Kh, I+4, new_vars(sort(map(Vnames, Evs)), I+3, Tdb2)),
-    #l{ke={'try',#l{ke={block,Aes},i=I+1,vdb=Adb,a=[]},
-	   var_list(Vs),#l{ke={block,Bes},i=I+3,vdb=Bdb,a=[]},
-	   var_list(Evs),#l{ke={block,Hes},i=I+3,vdb=Hdb,a=[]},
-	   var_list(Rs)},
-       i=I,vdb=Tdb1,a=A#k.a}.
-
-%% call_op(Op) -> Op.
-%% test_op(Op) -> Op.
-%%  Do any necessary name translations here to munge into beam format.
-
-call_op(#k_local{name=N}) -> N; 
-call_op(#k_remote{mod=M,name=N}) -> {remote,atomic(M),atomic(N)};
-call_op(Other) -> variable(Other).
-
-test_op(#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=N}}) -> N.
-
-%% k_bif(Anno, Op, [Arg], [Ret], Vdb) -> Expr.
-%%  Build bifs.
-
-k_bif(_A, #k_internal{name=Name}, As, Rs) ->
-    {internal,Name,atomic_list(As),var_list(Rs)};
-k_bif(_A, #k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=Name}}, As, Rs) ->
-    Ar = length(As),
-    case is_gc_bif(Name, Ar) of
-	false ->
-	    {bif,Name,atomic_list(As),var_list(Rs)};
-	true ->
-	    {gc_bif,Name,atomic_list(As),var_list(Rs)}
-    end.
-
-%% match(Kexpr, [LockVar], I, Vdb) -> Expr.
-%%  Convert match tree to old format.
-
-match(#k_alt{anno=A,first=Kf,then=Kt}, Ls, I, Ctxt, Vdb0) ->
-    Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
-    F = match(Kf, Ls, I+1, Ctxt, Vdb1),
-    T = match(Kt, Ls, I+1, Ctxt, Vdb1),
-    #l{ke={alt,F,T},i=I,vdb=Vdb1,a=A#k.a};
-match(#k_select{anno=A,var=V,types=Kts}, Ls0, I, Ctxt, Vdb0) ->
-    Vanno = get_kanno(V),
-    Ls1 = case member(no_usage, Vanno) of
-	      false -> add_element(V#k_var.name, Ls0);
-	      true -> Ls0
-	  end,
-    Anno = case member(reuse_for_context, Vanno) of
-	       true -> [reuse_for_context|A#k.a];
-	       false -> A#k.a
-	   end,
-    Vdb1 = use_vars(union(A#k.us, Ls1), I, Vdb0),
-    Ts = [type_clause(Tc, Ls1, I+1, Ctxt, Vdb1) || Tc <- Kts],
-    #l{ke={select,literal(V, Ctxt),Ts},i=I,vdb=Vdb1,a=Anno};
-match(#k_guard{anno=A,clauses=Kcs}, Ls, I, Ctxt, Vdb0) ->
-    Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
-    Cs = [guard_clause(G, Ls, I+1, Ctxt, Vdb1) || G <- Kcs],
-    #l{ke={guard,Cs},i=I,vdb=Vdb1,a=A#k.a};
-match(Other, Ls, I, _Ctxt, Vdb0) ->
-    Vdb1 = use_vars(Ls, I, Vdb0),
-    {B,_,Vdb2} = body(Other, I+1, Vdb1),
-    #l{ke={block,B},i=I,vdb=Vdb2,a=[]}.
-
-type_clause(#k_type_clause{anno=A,type=T,values=Kvs}, Ls, I, Ctxt, Vdb0) ->
-    %%ok = io:format("life ~w: ~p~n", [?LINE,{T,Kvs}]),
-    Vdb1 = use_vars(union(A#k.us, Ls), I+1, Vdb0),
-    Vs = [val_clause(Vc, Ls, I+1, Ctxt, Vdb1) || Vc <- Kvs],
-    #l{ke={type_clause,type(T),Vs},i=I,vdb=Vdb1,a=A#k.a}.
-
-val_clause(#k_val_clause{anno=A,val=V,body=Kb}, Ls0, I, Ctxt0, Vdb0) ->
-    New = (get_kanno(V))#k.ns,
-    Bus = (get_kanno(Kb))#k.us,
-    %%ok = io:format("Ls0 = ~p, Used=~p\n  New=~p, Bus=~p\n", [Ls0,Used,New,Bus]),
-    Ls1 = union(intersection(New, Bus), Ls0),	%Lock for safety
-    Vdb1 = use_vars(union(A#k.us, Ls1), I+1, new_vars(New, I, Vdb0)),
-    Ctxt = case V of
-	       #k_binary{segs=#k_var{name=C0}} -> C0;
-	       _ -> Ctxt0
-	   end,
-    B = match(Kb, Ls1, I+1, Ctxt, Vdb1),
-    #l{ke={val_clause,literal(V, Ctxt),B},i=I,vdb=use_vars(Bus, I+1, Vdb1),a=A#k.a}.
-
-guard_clause(#k_guard_clause{anno=A,guard=Kg,body=Kb}, Ls, I, Ctxt, Vdb0) ->
-    Vdb1 = use_vars(union(A#k.us, Ls), I+2, Vdb0),
-    Gdb = vdb_sub(I+1, I+2, Vdb1),
-    G = protected(Kg, I+1, Gdb),
-    B = match(Kb, Ls, I+2, Ctxt, Vdb1),
-    #l{ke={guard_clause,G,B},
-       i=I,vdb=use_vars((get_kanno(Kg))#k.us, I+2, Vdb1),
-       a=A#k.a}.
-
-%% type(Ktype) -> Type.
-
-type(k_literal) -> literal;
-type(k_int) -> integer;
-%%type(k_char) -> integer;			%Hhhmmm???
-type(k_float) -> float;
-type(k_atom) -> atom;
-type(k_nil) -> nil;
-type(k_cons) -> cons;
-type(k_tuple) -> tuple;
-type(k_binary) -> binary;
-type(k_bin_seg) -> bin_seg;
-type(k_bin_int) -> bin_int;
-type(k_bin_end) -> bin_end;
-type(k_map) -> map.
-
-%% variable(Klit) -> Lit.
-%% var_list([Klit]) -> [Lit].
-
-variable(#k_var{name=N}) -> {var,N}.
-
-var_list(Ks) -> [variable(K) || K <- Ks].
-
-%% atomic(Klit) -> Lit.
-%% atomic_list([Klit]) -> [Lit].
-
-atomic(#k_literal{val=V}) -> {literal,V};
-atomic(#k_var{name=N}) -> {var,N};
-atomic(#k_int{val=I}) -> {integer,I};
-atomic(#k_float{val=F}) -> {float,F};
-atomic(#k_atom{val=N}) -> {atom,N};
-%%atomic(#k_char{val=C}) -> {char,C};
-atomic(#k_nil{}) -> nil.
-
-atomic_list(Ks) -> [atomic(K) || K <- Ks].
-
-%% literal(Klit) -> Lit.
-%% literal_list([Klit]) -> [Lit].
-
-literal(#k_var{name=N}, _) -> {var,N};
-literal(#k_literal{val=I}, _) -> {literal,I};
-literal(#k_int{val=I}, _) -> {integer,I};
-literal(#k_float{val=F}, _) -> {float,F};
-literal(#k_atom{val=N}, _) -> {atom,N};
-%%literal(#k_char{val=C}, _) -> {char,C};
-literal(#k_nil{}, _) -> nil;
-literal(#k_cons{hd=H,tl=T}, Ctxt) ->
-    {cons,[literal(H, Ctxt),literal(T, Ctxt)]};
-literal(#k_binary{segs=V}, Ctxt) ->
-    {binary,literal(V, Ctxt)};
-literal(#k_bin_seg{size=S,unit=U,type=T,flags=Fs,seg=Seg,next=[]}, Ctxt) ->
-    %% Only occurs in patterns.
-    {bin_seg,Ctxt,literal(S, Ctxt),U,T,Fs,[literal(Seg, Ctxt)]};
-literal(#k_bin_seg{size=S,unit=U,type=T,flags=Fs,seg=Seg,next=N}, Ctxt) ->
-    {bin_seg,Ctxt,literal(S, Ctxt),U,T,Fs,
-     [literal(Seg, Ctxt),literal(N, Ctxt)]};
-literal(#k_bin_int{size=S,unit=U,flags=Fs,val=Int,next=N}, Ctxt) ->
-    %% Only occurs in patterns.
-    {bin_int,Ctxt,literal(S, Ctxt),U,Fs,Int,
-     [literal(N, Ctxt)]};
-literal(#k_bin_end{}, Ctxt) ->
-    {bin_end,Ctxt};
-literal(#k_tuple{es=Es}, Ctxt) ->
-    {tuple,literal_list(Es, Ctxt)};
-literal(#k_map{op=Op,var=Var,es=Es0}, Ctxt) ->
-    {map,Op,literal(Var, Ctxt),literal_list(Es0, Ctxt)};
-literal(#k_map_pair{key=K,val=V}, Ctxt) ->
-    {map_pair,literal(K, Ctxt),literal(V, Ctxt)}.
-
-literal_list(Ks, Ctxt) ->
-    [literal(K, Ctxt) || K <- Ks].
-
-
-%% is_gc_bif(Name, Arity) -> true|false
-%%  Determines whether the BIF Name/Arity might do a GC.
-
-is_gc_bif(hd, 1) -> false;
-is_gc_bif(tl, 1) -> false;
-is_gc_bif(self, 0) -> false;
-is_gc_bif(node, 0) -> false;
-is_gc_bif(node, 1) -> false;
-is_gc_bif(element, 2) -> false;
-is_gc_bif(get, 1) -> false;
-is_gc_bif(tuple_size, 1) -> false;
-is_gc_bif(Bif, Arity) ->
-    not (erl_internal:bool_op(Bif, Arity) orelse
-	 erl_internal:new_type_test(Bif, Arity) orelse
-	 erl_internal:comp_op(Bif, Arity)).
-
-%% Keep track of life time for variables.
-%%
-%% init_vars([{var,VarName}]) -> Vdb.
-%% new_vars([VarName], I, Vdb) -> Vdb.
-%% use_vars([VarName], I, Vdb) -> Vdb.
-%% add_var(VarName, F, L, Vdb) -> Vdb.
-%%
-%% The list of variable names for new_vars/3 and use_vars/3
-%% must be sorted.
-
-init_vars(Vs) ->
-    vdb_new(Vs).
-
-new_vars([], _, Vdb) -> Vdb;
-new_vars([V], I, Vdb) -> vdb_store_new(V, {V,I,I}, Vdb);
-new_vars(Vs, I, Vdb) -> vdb_update_vars(Vs, Vdb, I).
-
-use_vars([], _, Vdb) ->
-    Vdb;
-use_vars([V], I, Vdb) ->
-    case vdb_find(V, Vdb) of
-	{V,F,L} when I > L -> vdb_update(V, {V,F,I}, Vdb);
-	{V,_,_} -> Vdb;
-	error -> vdb_store_new(V, {V,I,I}, Vdb)
-    end;
-use_vars(Vs, I, Vdb) -> vdb_update_vars(Vs, Vdb, I).
-
-add_var(V, F, L, Vdb) ->
-    vdb_store_new(V, {V,F,L}, Vdb).
-
-%% vdb
-
-vdb_new(Vs) ->
-    sort([{V,0,0} || {var,V} <- Vs]).
-
--type var() :: atom().
-
--spec vdb_find(var(), [vdb_entry()]) -> 'error' | vdb_entry().
-
-vdb_find(V, Vdb) ->
-    case lists:keyfind(V, 1, Vdb) of
-	false -> error;
-	Vd -> Vd
-    end.
-
-vdb_update(V, Update, [{V,_,_}|Vdb]) ->
-    [Update|Vdb];
-vdb_update(V, Update, [Vd|Vdb]) ->
-    [Vd|vdb_update(V, Update, Vdb)].
-
-vdb_store_new(V, New, [{V1,_,_}=Vd|Vdb]) when V > V1 ->
-    [Vd|vdb_store_new(V, New, Vdb)];
-vdb_store_new(V, New, [{V1,_,_}|_]=Vdb) when V < V1 ->
-    [New|Vdb];
-vdb_store_new(_, New, []) -> [New].
-
-vdb_update_vars([V|_]=Vs, [{V1,_,_}=Vd|Vdb], I) when V > V1 ->
-    [Vd|vdb_update_vars(Vs, Vdb, I)];
-vdb_update_vars([V|Vs], [{V1,_,_}|_]=Vdb, I) when V < V1 ->
-    %% New variable.
-    [{V,I,I}|vdb_update_vars(Vs, Vdb, I)];
-vdb_update_vars([V|Vs], [{_,F,L}=Vd|Vdb], I) ->
-    %% Existing variable.
-    if
-	I > L -> [{V,F,I}|vdb_update_vars(Vs, Vdb, I)];
-	true ->  [Vd|vdb_update_vars(Vs, Vdb, I)]
-    end;
-vdb_update_vars([V|Vs], [], I) ->
-    %% New variable.
-    [{V,I,I}|vdb_update_vars(Vs, [], I)];
-vdb_update_vars([], Vdb, _) -> Vdb.
-
-%% vdb_sub(Min, Max, Vdb) -> Vdb.
-%%  Extract variables which are used before and after Min.  Lock
-%%  variables alive after Max.
-
-vdb_sub(Min, Max, Vdb) ->
-    [ if L >= Max -> {V,F,locked};
-	 true -> Vd
-      end || {V,F,L}=Vd <- Vdb, F < Min, L >= Min ].
diff --git a/lib/compiler/test/beam_utils_SUITE.erl b/lib/compiler/test/beam_utils_SUITE.erl
index 710cb050d4..7686e69b63 100644
--- a/lib/compiler/test/beam_utils_SUITE.erl
+++ b/lib/compiler/test/beam_utils_SUITE.erl
@@ -24,7 +24,8 @@
 	 apply_fun/1,apply_mf/1,bs_init/1,bs_save/1,
 	 is_not_killed/1,is_not_used_at/1,
 	 select/1,y_catch/1,otp_8949_b/1,liveopt/1,coverage/1,
-	 y_registers/1]).
+         y_registers/1,user_predef/1,scan_f/1,cafu/1,
+         receive_label/1,read_size_file_version/1]).
 -export([id/1]).
 
 suite() -> [{ct_hooks,[ts_install_cth]}].
@@ -46,7 +47,11 @@ groups() ->
        otp_8949_b,
        liveopt,
        coverage,
-       y_registers
+       y_registers,
+       user_predef,
+       scan_f,
+       cafu,
+       read_size_file_version
       ]}].
 
 init_per_suite(Config) ->
@@ -117,6 +122,15 @@ bs_init(_Config) ->
     {'EXIT',{badarg,_}} = (catch do_bs_init_2([0.5])),
     {'EXIT',{badarg,_}} = (catch do_bs_init_2([-1])),
     {'EXIT',{badarg,_}} = (catch do_bs_init_2([1 bsl 32])),
+
+    <<>> = do_bs_init_3({tag,0}, 0, 0),
+    <<0>> = do_bs_init_3({tag,0}, 2, 1),
+
+    <<"_build/shared">> = do_bs_init_4([], false),
+    <<"abc/shared">> = do_bs_init_4(<<"abc">>, false),
+    <<"foo/foo">> = do_bs_init_4(<<"foo">>, true),
+    error = do_bs_init_4([], not_boolean),
+
     ok.
 
 do_bs_init_1([?MODULE], Sz) ->
@@ -134,6 +148,45 @@ do_bs_init_2(SigNos) ->
 	    erlang:error(badarg)
     >>.
 
+do_bs_init_3({tag,Pos}, Offset, Len) ->
+    N0 = Offset - Pos,
+    N = if N0 > Len -> Len;
+           true -> N0
+        end,
+    <<0:N/unit:8>>.
+
+do_bs_init_4(Arg1, Arg2) ->
+    Build =
+        case id(Arg1) of
+            X when X =:= [] orelse X =:= false -> <<"_build">>;
+            X -> X
+        end,
+    case id(Arg2) of
+        true ->
+            id(<<case Build of
+                     Rewrite when is_binary(Rewrite) ->
+                         Rewrite;
+                     Rewrite ->
+                         id(Rewrite)
+                 end/binary,
+                 "/",
+                 case id(<<"foo">>) of
+                     Rewrite when is_binary(Rewrite) ->
+                         Rewrite;
+                     Rewrite ->
+                         id(Rewrite)
+                 end/binary>>);
+        false ->
+            id(<<case Build of
+                     Rewrite when is_binary(Rewrite) ->
+                         Rewrite;
+                     Rewrite ->
+                         id(Rewrite)
+                 end/binary,
+                 "/shared">>);
+        Other ->
+            error
+    end.
 
 bs_save(_Config) ->
     {a,30,<<>>} = do_bs_save(<<1:1,30:5>>),
@@ -376,5 +429,83 @@ do(A, B) -> {A,B}.
 appointment(#{"resolution" := Url}) ->
     do(receive _ -> Url end, #{true => Url}).
 
+%% From epp.erl.
+user_predef(_Config) ->
+    #{key:="value"} = user_predef({key,"value"}, #{}),
+    #{key:="value"} = user_predef({key,"value"}, #{key=>defined}),
+    error = user_predef({key,"value"}, #{key=>[defined]}),
+    ok.
+
+user_predef({M,Val}, Ms) ->
+    case Ms of
+	#{M:=Defs} when is_list(Defs) ->
+	    error;
+	_ ->
+	    Ms#{M=>Val}
+    end.
+
+%% From disk_log_1.erl.
+scan_f(_Config) ->
+    {1,<<>>,[]} = scan_f(<<1:32>>, 1, []),
+    {1,<<>>,[<<156>>]} = scan_f(<<1:32,156,1:32>>, 1, []),
+    ok.
+
+scan_f(<<Size:32,Tail/binary>>, FSz, Acc) when Size =< FSz ->
+    case Tail of
+        <<BinTerm:Size/binary,Tail2/binary>> ->
+            scan_f(Tail2, FSz, [BinTerm | Acc]);
+        _ ->
+            {Size,Tail,Acc}
+    end.
+
+%% From file_io_server.erl.
+cafu(_Config) ->
+    error = cafu(<<42:32>>, -1, 0, {utf32,big}),
+    error = cafu(<<42:32>>, 10, 0, {utf32,big}),
+    error = cafu(<<42:32>>, -1, 0, {utf32,little}),
+    ok.
+
+cafu(<<_/big-utf32,Rest/binary>>, N, Count, {utf32,big}) when N < 0 ->
+    cafu(Rest, -1, Count+1, {utf32,big});
+cafu(<<_/big-utf32,Rest/binary>>, N, Count, {utf32,big}) ->
+    cafu(Rest, N-1, Count+1, {utf32,big});
+cafu(<<_/little-utf32,Rest/binary>>, N, Count, {utf32,little}) when N < 0 ->
+    cafu(Rest, -1, Count+1, {utf32,little});
+cafu(_, _, _, _) ->
+    error.
+
+-record(rec_label, {bool}).
+
+receive_label(_Config) ->
+    Pid = spawn_link(fun() -> do_receive_label(#rec_label{bool=true}) end),
+    Msg = {a,b,c},
+    Pid ! {self(),Msg},
+    receive
+        {ok,Msg} ->
+            unlink(Pid),
+            exit(Pid, die),
+            ok
+    end.
+
+do_receive_label(Rec) ->
+    receive
+        {From,Message} when Rec#rec_label.bool ->
+            From ! {ok,Message},
+            do_receive_label(Rec)
+    end.
+
+read_size_file_version(_Config) ->
+    ok = do_read_size_file_version({ok,<<42>>}),
+    {ok,7777} = do_read_size_file_version({ok,<<7777:32>>}),
+    ok.
+
+do_read_size_file_version(E) ->
+    case E of
+	{ok,<<Version>>} when Version =:= 42 ->
+            ok;
+	{ok,<<MaxFiles:32>>} ->
+            {ok,MaxFiles}
+    end.
+
 %% The identity function.
 id(I) -> I.
diff --git a/lib/compiler/test/beam_validator_SUITE.erl b/lib/compiler/test/beam_validator_SUITE.erl
index c23514b36b..685eb2a72e 100644
--- a/lib/compiler/test/beam_validator_SUITE.erl
+++ b/lib/compiler/test/beam_validator_SUITE.erl
@@ -421,9 +421,9 @@ try_bin_opt(Mod) ->
     try
 	do_bin_opt(Mod)
     catch
-	Class:Error ->
+	Class:Error:Stk ->
 	    io:format("~p: ~p ~p\n~p\n",
-		      [Mod,Class,Error,erlang:get_stacktrace()]),
+		      [Mod,Class,Error,Stk]),
 	    error
     end.
 
diff --git a/lib/compiler/test/bs_match_SUITE.erl b/lib/compiler/test/bs_match_SUITE.erl
index ad48d4c0b7..7e1a432511 100644
--- a/lib/compiler/test/bs_match_SUITE.erl
+++ b/lib/compiler/test/bs_match_SUITE.erl
@@ -39,7 +39,8 @@
 	 match_string_opt/1,select_on_integer/1,
 	 map_and_binary/1,unsafe_branch_caching/1,
 	 bad_literals/1,good_literals/1,constant_propagation/1,
-	 parse_xml/1,get_payload/1,escape/1,num_slots_different/1]).
+	 parse_xml/1,get_payload/1,escape/1,num_slots_different/1,
+         check_bitstring_list/1,guard/1]).
 
 -export([coverage_id/1,coverage_external_ignore/2]).
 
@@ -71,7 +72,8 @@ groups() ->
        match_string_opt,select_on_integer,
        map_and_binary,unsafe_branch_caching,
        bad_literals,good_literals,constant_propagation,parse_xml,
-       get_payload,escape,num_slots_different]}].
+       get_payload,escape,num_slots_different,
+       check_bitstring_list,guard]}].
 
 
 init_per_suite(Config) ->
@@ -1572,6 +1574,32 @@ lgettext(<<"de">>, <<"navigation">>, <<"Results">>) ->
 lgettext(<<"de">>, <<"navigation">>, <<"Resources">>) ->
     {ok, <<"Ressourcen">>}.
 
+%% Cover more code in beam_bsm.
+check_bitstring_list(_Config) ->
+    true = check_bitstring_list(<<1:1,0:1,1:1,1:1>>, [1,0,1,1]),
+    false = check_bitstring_list(<<1:1,0:1,1:1,1:1>>, [0]),
+    ok.
+
+check_bitstring_list(<<H:1,T1/bitstring>>, [H|T2]) ->
+    check_bitstring_list(T1, T2);
+check_bitstring_list(<<>>, []) ->
+    true;
+check_bitstring_list(_, _) ->
+    false.
+
+guard(_Config) ->
+    Tuple = id({a,b}),
+    ok = guard_1(<<1,2,3>>, {1,2,3}),
+    ok = guard_2(<<42>>, #{}),
+    ok.
+
+%% Cover handling of #k_put{} in v3_codegen:bsm_rename_ctx/4.
+guard_1(<<A,B,C>>, Tuple) when Tuple =:= {A,B,C} ->
+    ok.
+
+%% Cover handling of #k_call{} in v3_codegen:bsm_rename_ctx/4.
+guard_2(<<_>>, Healing) when Healing#{[] => Healing} =:= #{[] => #{}} ->
+    ok.
 
 check(F, R) ->
     R = F().
diff --git a/lib/compiler/test/compile_SUITE.erl b/lib/compiler/test/compile_SUITE.erl
index 25983c6012..35c11d894d 100644
--- a/lib/compiler/test/compile_SUITE.erl
+++ b/lib/compiler/test/compile_SUITE.erl
@@ -120,9 +120,19 @@ file_1(Config) when is_list(Config) ->
     true = exists(Target),
     passed = run(Target, test, []),
 
+    %% Test option 'deterministic' as a compiler attribute.
+    Det = deterministic_module,
+    {DetPath, DetTarget} = get_files(Config, Det, "det_target"),
+    {ok,Det,DetCode} = compile:file(DetPath, [binary]),
+    {module,Det} = code:load_binary(Det, "", DetCode),
+    [{version,_}] = Det:module_info(compile),
+    true = code:delete(Det),
+    false = code:purge(Det),
+
     %% Cleanup.
     ok = file:delete(Target),
     ok = file:del_dir(filename:dirname(Target)),
+    ok = file:del_dir(filename:dirname(DetTarget)),
 
     %% There should not be any messages in the messages.
     receive
@@ -375,7 +385,6 @@ do_file_listings(DataDir, PrivDir, [File|Files]) ->
     do_listing(Simple, TargetDir, dcbsm, ".core_bsm"),
     do_listing(Simple, TargetDir, dsetel, ".dsetel"),
     do_listing(Simple, TargetDir, dkern, ".kernel"),
-    do_listing(Simple, TargetDir, dlife, ".life"),
     do_listing(Simple, TargetDir, dcg, ".codegen"),
     do_listing(Simple, TargetDir, dblk, ".block"),
     do_listing(Simple, TargetDir, dexcept, ".except"),
@@ -399,6 +408,7 @@ do_file_listings(DataDir, PrivDir, [File|Files]) ->
     ok = file:delete(filename:join(Listings, File ++ ".core")),
     do_listing(Simple, TargetDir, to_core, ".core"),
     do_listing(Simple, TargetDir, to_kernel, ".kernel"),
+    do_listing(Simple, TargetDir, to_dis, ".dis"),
 
     %% Final clean up.
     lists:foreach(fun(F) -> ok = file:delete(F) end,
@@ -414,6 +424,7 @@ listings_big(Config) when is_list(Config) ->
     do_listing(Big, TargetDir, 'E'),
     do_listing(Big, TargetDir, 'P'),
     do_listing(Big, TargetDir, dkern, ".kernel"),
+    do_listing(Big, TargetDir, to_dis, ".dis"),
 
     TargetNoext = filename:rootname(Target, code:objfile_extension()),
     {ok,big} = compile:file(TargetNoext, [from_asm,{outdir,TargetDir}]),
@@ -489,9 +500,8 @@ do_kernel_listing({M,A}) ->
 	    io:format("*** compilation failure '~p' for module ~s\n",
 		      [Error,M]),
 	    error;
-	Class:Error ->
-	    io:format("~p: ~p ~p\n~p\n",
-		      [M,Class,Error,erlang:get_stacktrace()]),
+	Class:Error:Stk ->
+	    io:format("~p: ~p ~p\n~p\n", [M,Class,Error,Stk]),
 	    error
     end.
 
@@ -891,9 +901,8 @@ do_core_pp({M,A}, Outdir) ->
 	    io:format("*** compilation failure '~p' for module ~s\n",
 		      [Error,M]),
 	    error;
-	Class:Error ->
-	    io:format("~p: ~p ~p\n~p\n",
-		      [M,Class,Error,erlang:get_stacktrace()]),
+	Class:Error:Stk ->
+	    io:format("~p: ~p ~p\n~p\n", [M,Class,Error,Stk]),
 	    error
     end.
 
@@ -950,9 +959,8 @@ do_core_roundtrip(Beam, Outdir) ->
 	    io:format("*** compilation failure '~p' for file ~s\n",
 		      [Error,Beam]),
 	    error;
-	Class:Error ->
-	    io:format("~p: ~p ~p\n~p\n",
-		      [Beam,Class,Error,erlang:get_stacktrace()]),
+	Class:Error:Stk ->
+	    io:format("~p: ~p ~p\n~p\n", [Beam,Class,Error,Stk]),
 	    error
     end.
 
@@ -1137,9 +1145,8 @@ do_asm(Beam, Outdir) ->
 			  [Other,AsmFile]),
 		error
 	end
-    catch Class:Error ->
-	    io:format("~p: ~p ~p\n~p\n",
-		      [M,Class,Error,erlang:get_stacktrace()]),
+    catch Class:Error:Stk ->
+	    io:format("~p: ~p ~p\n~p\n", [M,Class,Error,Stk]),
 	    error
     end.
 
@@ -1156,9 +1163,8 @@ do_opt_guards(Beam) ->
     try
 	{ok,M,Asm} = compile:forms(A, ['S']),
 	do_opt_guards_mod(Asm)
-    catch Class:Error ->
-	    io:format("~p: ~p ~p\n~p\n",
-		      [M,Class,Error,erlang:get_stacktrace()]),
+    catch Class:Error:Stk ->
+	    io:format("~p: ~p ~p\n~p\n", [M,Class,Error,Stk]),
 	    error
     end.
 
@@ -1319,10 +1325,13 @@ do_warnings_2([], Next, F) ->
 %% pre-loads the modules that are used by a typical compilation.
 
 pre_load_check(Config) ->
-    case test_server:is_cover() of
-	true ->
+    case {test_server:is_cover(),code:module_info(native)} of
+	{true,_} ->
 	    {skip,"Cover is running"};
-	false ->
+        {false,true} ->
+            %% Tracing won't work.
+            {skip,"'code' is native-compiled"};
+	{false,false} ->
 	    try
 		do_pre_load_check(Config)
 	    after
diff --git a/lib/compiler/test/compile_SUITE_data/deterministic_module.erl b/lib/compiler/test/compile_SUITE_data/deterministic_module.erl
new file mode 100644
index 0000000000..5e0e29c25e
--- /dev/null
+++ b/lib/compiler/test/compile_SUITE_data/deterministic_module.erl
@@ -0,0 +1,21 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(deterministic_module).
+-compile([deterministic]).
diff --git a/lib/compiler/test/guard_SUITE.erl b/lib/compiler/test/guard_SUITE.erl
index d96cfdb7ac..0d6f8c6f98 100644
--- a/lib/compiler/test/guard_SUITE.erl
+++ b/lib/compiler/test/guard_SUITE.erl
@@ -35,7 +35,8 @@
 	 basic_andalso_orelse/1,traverse_dcd/1,
 	 check_qlc_hrl/1,andalso_semi/1,t_tuple_size/1,binary_part/1,
 	 bad_constants/1,bad_guards/1,
-	 guard_in_catch/1,beam_bool_SUITE/1]).
+         guard_in_catch/1,beam_bool_SUITE/1,
+         cover_beam_dead/1]).
 
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
@@ -54,7 +55,8 @@ groups() ->
        rel_ops,rel_op_combinations,
        literal_type_tests,basic_andalso_orelse,traverse_dcd,
        check_qlc_hrl,andalso_semi,t_tuple_size,binary_part,
-       bad_constants,bad_guards,guard_in_catch,beam_bool_SUITE]}].
+       bad_constants,bad_guards,guard_in_catch,beam_bool_SUITE,
+       cover_beam_dead]}].
 
 init_per_suite(Config) ->
     Config.
@@ -1619,7 +1621,9 @@ type_tests() ->
      is_reference,
      is_port,
      is_binary,
-     is_function].
+     is_bitstring,
+     is_function,
+     is_map].
 
 basic_andalso_orelse(Config) when is_list(Config) ->
     T = id({type,integers,23,42}),
@@ -2202,7 +2206,31 @@ maps() ->
 evidence(#{0 := Charge}) when 0; #{[] => Charge} == #{[] => 42} ->
     ok.
 
+cover_beam_dead(_Config) ->
+    Mod = ?FUNCTION_NAME,
+    Attr = [],
+    Fs = [{function,test,1,2,
+           [{label,1},
+            {line,[]},
+            {func_info,{atom,Mod},{atom,test},1},
+            {label,2},
+            %% Cover beam_dead:turn_op/1 using swapped operand order.
+            {test,is_ne_exact,{f,3},[{integer,1},{x,0}]},
+            {test,is_eq_exact,{f,1},[{atom,a},{x,0}]},
+            {label,3},
+            {move,{atom,ok},{x,0}},
+            return]}],
+    Exp = [{test,1}],
+    Asm = {Mod,Exp,Attr,Fs,3},
+    {ok,Mod,Beam} = compile:forms(Asm, [from_asm,binary,report]),
+    {module,Mod} = code:load_binary(Mod, Mod, Beam),
+    ok = Mod:test(1),
+    ok = Mod:test(a),
+    {'EXIT',_} = (catch Mod:test(other)),
+    true = code:delete(Mod),
+    _ = code:purge(Mod),
 
+    ok.
 
 %% Call this function to turn off constant propagation.
 id(I) -> I.
diff --git a/lib/compiler/test/map_SUITE.erl b/lib/compiler/test/map_SUITE.erl
index 5e90b79aa2..f15917e3cb 100644
--- a/lib/compiler/test/map_SUITE.erl
+++ b/lib/compiler/test/map_SUITE.erl
@@ -695,8 +695,28 @@ t_is_map(Config) when is_list(Config) ->
     if is_map(#{b=>1}) -> ok end,
     if not is_map([1,2,3]) -> ok end,
     if not is_map(x) -> ok end,
+
+    ok = do_t_is_map(map, #{}),
+    error = do_t_is_map(map, {a,b,c}),
+    ok = do_t_is_map(number, 42),
+    ok = do_t_is_map(number, 42.0),
+    error = do_t_is_map(number, {a,b,c}),
     ok.
 
+do_t_is_map(What, X) ->
+    B = case What of
+            map ->
+                %% Cover conversion of is_map/1 BIF to test instruction
+                %% in beam_utils:bif_to_test/3.
+                is_map(X);
+            number ->
+                is_number(X)
+        end,
+    case B of
+        true -> ok;
+        false -> error
+    end.
+
 % test map updates without matching
 t_update_literals(Config) when is_list(Config) ->
     Map = #{x=>1,y=>2,z=>3,q=>4},
diff --git a/lib/compiler/test/match_SUITE.erl b/lib/compiler/test/match_SUITE.erl
index c31695be24..4b26a8dcdc 100644
--- a/lib/compiler/test/match_SUITE.erl
+++ b/lib/compiler/test/match_SUITE.erl
@@ -24,7 +24,8 @@
 	 pmatch/1,mixed/1,aliases/1,non_matching_aliases/1,
 	 match_in_call/1,untuplify/1,shortcut_boolean/1,letify_guard/1,
 	 selectify/1,deselectify/1,underscore/1,match_map/1,map_vars_used/1,
-	 coverage/1,grab_bag/1,literal_binary/1]).
+	 coverage/1,grab_bag/1,literal_binary/1,
+         unary_op/1]).
 	 
 -include_lib("common_test/include/ct.hrl").
 
@@ -40,7 +41,7 @@ groups() ->
        match_in_call,untuplify,
        shortcut_boolean,letify_guard,selectify,deselectify,
        underscore,match_map,map_vars_used,coverage,
-       grab_bag,literal_binary]}].
+       grab_bag,literal_binary,unary_op]}].
 
 
 init_per_suite(Config) ->
@@ -617,6 +618,10 @@ grab_bag(_Config) ->
 	 {bad,16#555555555555555555555555555555555555555555555555555}],
     ok = grab_bag_remove_failure(L, unit, 0),
 
+    {42,<<43,44>>} = grab_bag_single_valued(<<42,43,44>>),
+    empty_list = grab_bag_single_valued([]),
+    empty_tuple = grab_bag_single_valued({}),
+
     ok.
 
 grab_bag_remove_failure([], _Unit, _MaxFailure) ->
@@ -634,6 +639,12 @@ grab_bag_remove_failure([{stretch,_,Mi}=Stretch | Specs], Unit, _MaxFailure) ->
 	    ok
     end.
 
+%% Cover a line v3_kernel that places binary matching first.
+grab_bag_single_valued(<<H,T/bytes>>) -> {H,T};
+grab_bag_single_valued([]) -> empty_list;
+grab_bag_single_valued({}) -> empty_tuple.
+
+
 %% Regression in 19.0, reported by Alexei Sholik
 literal_binary(_Config) ->
     3 = literal_binary_match(bar, <<"y">>),
@@ -652,5 +663,74 @@ literal_binary_match(_, <<"x">>) -> 2;
 literal_binary_match(_, <<"y">>) -> 3;
 literal_binary_match(_, _) -> fail.
 
+unary_op(Config) ->
+    %% ERL-514. This test case only verifies that the code
+    %% calculates the correct result, not that the generated
+    %% code is optimial.
+
+    {non_associative,30} = unary_op_1('&'),
+    {non_associative,300} = unary_op_1('^'),
+    {non_associative,300} = unary_op_1('not'),
+    {non_associative,300} = unary_op_1('+'),
+    {non_associative,300} = unary_op_1('-'),
+    {non_associative,300} = unary_op_1('~~~'),
+    {non_associative,300} = unary_op_1('!'),
+    {non_associative,320} = unary_op_1('@'),
+
+    error = unary_op_1(Config),
+    error = unary_op_1(abc),
+    error = unary_op_1(42),
+
+    ok.
+
+unary_op_1(Vop@1) ->
+    %% If all optimizations are working as they should, there should
+    %% be no stack frame and all '=:=' tests should be coalesced into
+    %% a single select_val instruction.
+
+    case Vop@1 =:= '&' of
+        true ->
+            {non_associative,30};
+        false ->
+            case
+                case Vop@1 =:= '^' of
+                    true ->
+                        true;
+                    false ->
+                        case Vop@1 =:= 'not' of
+                            true ->
+                                true;
+                            false ->
+                                case Vop@1 =:= '+' of
+                                    true ->
+                                        true;
+                                    false ->
+                                        case Vop@1 =:= '-' of
+                                            true ->
+                                                true;
+                                            false ->
+                                                case Vop@1 =:= '~~~' of
+                                                    true ->
+                                                        true;
+                                                    false ->
+                                                        Vop@1 =:= '!'
+                                                end
+                                        end
+                                end
+                        end
+                end
+            of
+                true ->
+                    {non_associative,300};
+                false ->
+                    case Vop@1 =:= '@' of
+                        true ->
+                            {non_associative,320};
+                        false ->
+                            error
+                    end
+            end
+    end.
+
 
 id(I) -> I.
diff --git a/lib/compiler/test/misc_SUITE.erl b/lib/compiler/test/misc_SUITE.erl
index ea4aaf40a9..d93c5dda1e 100644
--- a/lib/compiler/test/misc_SUITE.erl
+++ b/lib/compiler/test/misc_SUITE.erl
@@ -171,7 +171,7 @@ silly_coverage(Config) when is_list(Config) ->
     expect_error(fun() -> sys_core_dsetel:module(BadCoreErlang, []) end),
     expect_error(fun() -> v3_kernel:module(BadCoreErlang, []) end),
 
-    %% v3_life
+    %% v3_codegen
     BadKernel = {k_mdef,[],?MODULE,
 		 [{foo,0}],
 		 [],
@@ -179,11 +179,7 @@ silly_coverage(Config) when is_list(Config) ->
 		   {k,[],[],[]},
 		   f,0,[],
 		   seriously_bad_body}]},
-    expect_error(fun() -> v3_life:module(BadKernel, []) end),
-
-    %% v3_codegen
-    CodegenInput = {?MODULE,[{foo,0}],[],[{function,foo,0,[a|b],a,b,[]}]},
-    expect_error(fun() -> v3_codegen:module(CodegenInput, []) end),
+    expect_error(fun() -> v3_codegen:module(BadKernel, []) end),
 
     %% beam_a
     BeamAInput = {?MODULE,[{foo,0}],[],
@@ -322,8 +318,7 @@ expect_error(Fun) ->
 	    io:format("~p", [Any]),
 	    ct:fail(call_was_supposed_to_fail)
     catch
-	Class:Reason ->
-	    Stk = erlang:get_stacktrace(),
+	Class:Reason:Stk ->
 	    io:format("~p:~p\n~p\n", [Class,Reason,Stk]),
 	    case {Class,Reason} of
 		{error,undef} ->
diff --git a/lib/compiler/test/receive_SUITE.erl b/lib/compiler/test/receive_SUITE.erl
index 8304672558..5e386790c0 100644
--- a/lib/compiler/test/receive_SUITE.erl
+++ b/lib/compiler/test/receive_SUITE.erl
@@ -222,9 +222,8 @@ do_ref_opt(Source, PrivDir) ->
 		    collect_recv_opt_instrs(Code)
 	end,
 	ok
-    catch Class:Error ->
-	    io:format("~s: ~p ~p\n~p\n",
-		      [Source,Class,Error,erlang:get_stacktrace()]),
+    catch Class:Error:Stk ->
+	    io:format("~s: ~p ~p\n~p\n", [Source,Class,Error,Stk]),
 	    error
     end.
 
@@ -265,6 +264,10 @@ export(Config) when is_list(Config) ->
     self() ! {result,Ref,42},
     42 = export_1(Ref),
     {error,timeout} = export_1(Ref),
+
+    self() ! {result,Ref},
+    {ok,Ref} = export_2(),
+
     ok.
 
 export_1(Reference) ->
@@ -281,6 +284,10 @@ export_1(Reference) ->
     id({build,self()}),
     Result.
 
+export_2() ->
+    receive {result,Result} -> ok end,
+    {ok,Result}.
+
 wait(Config) when is_list(Config) ->
     self() ! <<42>>,
     <<42>> = wait_1(r, 1, 2),
diff --git a/lib/compiler/test/trycatch_SUITE.erl b/lib/compiler/test/trycatch_SUITE.erl
index 42dbf7d5f0..8cf7928cc4 100644
--- a/lib/compiler/test/trycatch_SUITE.erl
+++ b/lib/compiler/test/trycatch_SUITE.erl
@@ -26,7 +26,8 @@
 	 nested_of/1,nested_catch/1,nested_after/1,
 	 nested_horrid/1,last_call_optimization/1,bool/1,
 	 plain_catch_coverage/1,andalso_orelse/1,get_in_try/1,
-	 hockey/1,handle_info/1,catch_in_catch/1,grab_bag/1]).
+	 hockey/1,handle_info/1,catch_in_catch/1,grab_bag/1,
+         stacktrace/1,nested_stacktrace/1]).
 
 -include_lib("common_test/include/ct.hrl").
 
@@ -42,7 +43,8 @@ groups() ->
        after_oops,eclectic,rethrow,nested_of,nested_catch,
        nested_after,nested_horrid,last_call_optimization,
        bool,plain_catch_coverage,andalso_orelse,get_in_try,
-       hockey,handle_info,catch_in_catch,grab_bag]}].
+       hockey,handle_info,catch_in_catch,grab_bag,
+       stacktrace,nested_stacktrace]}].
 
 
 init_per_suite(Config) ->
@@ -1039,5 +1041,123 @@ grab_bag(_Config) ->
 
     ok.
 
+stacktrace(_Config) ->
+    V = [make_ref()|self()],
+    case ?MODULE:module_info(native) of
+        false ->
+            {value2,{caught1,badarg,[{erlang,abs,[V],_}|_]}} =
+                stacktrace_1({'abs',V}, error, {value,V}),
+            {caught2,{error,badarith},[{erlang,'+',[0,a],_},
+                                       {?MODULE,my_add,2,_}|_]} =
+                stacktrace_1({'div',{1,0}}, error, {'add',{0,a}});
+        true ->
+            {value2,{caught1,badarg,[{?MODULE,my_abs,1,_}|_]}} =
+                stacktrace_1({'abs',V}, error, {value,V}),
+            {caught2,{error,badarith},[{?MODULE,my_add,2,_}|_]} =
+                stacktrace_1({'div',{1,0}}, error, {'add',{0,a}})
+    end,
+    {caught2,{error,{try_clause,V}},[{?MODULE,stacktrace_1,3,_}|_]} =
+        stacktrace_1({value,V}, error, {value,V}),
+    {caught2,{throw,V},[{?MODULE,foo,1,_}|_]} =
+        stacktrace_1({value,V}, error, {throw,V}),
+
+    try
+        stacktrace_2()
+    catch
+        error:{badmatch,_}:Stk2 ->
+            [{?MODULE,stacktrace_2,0,_},
+             {?MODULE,stacktrace,1,_}|_] = Stk2,
+            Stk2 = erlang:get_stacktrace(),
+            ok
+    end,
+
+    try
+        stacktrace_3(a, b)
+    catch
+        error:function_clause:Stk3 ->
+            Stk3 = erlang:get_stacktrace(),
+            case lists:module_info(native) of
+                false ->
+                    [{lists,prefix,[a,b],_}|_] = Stk3;
+                true ->
+                    [{lists,prefix,2,_}|_] = Stk3
+            end
+    end,
+
+    try
+        throw(x)
+    catch
+        throw:x:IntentionallyUnused ->
+            ok
+    end.
+
+stacktrace_1(X, C1, Y) ->
+    try try foo(X) of
+            C1 -> value1
+        catch
+            C1:D1:Stk1 ->
+                Stk1 = erlang:get_stacktrace(),
+                {caught1,D1,Stk1}
+        after
+            foo(Y)
+        end of
+        V2 -> {value2,V2}
+    catch
+        C2:D2:Stk2 -> {caught2,{C2,D2},Stk2=erlang:get_stacktrace()}
+    end.
+
+stacktrace_2() ->
+    ok = erlang:process_info(self(), current_function),
+    ok.
+
+stacktrace_3(A, B) ->
+    {ok,lists:prefix(A, B)}.
+
+nested_stacktrace(_Config) ->
+    V = [{make_ref()}|[self()]],
+    value1 = nested_stacktrace_1({{value,{V,x1}},void,{V,x1}},
+                                 {void,void,void}),
+    case ?MODULE:module_info(native) of
+        false ->
+            {caught1,
+             [{erlang,'+',[V,x1],_},{?MODULE,my_add,2,_}|_],
+             value2} =
+                nested_stacktrace_1({{'add',{V,x1}},error,badarith},
+                                    {{value,{V,x2}},void,{V,x2}}),
+            {caught1,
+             [{erlang,'+',[V,x1],_},{?MODULE,my_add,2,_}|_],
+             {caught2,[{erlang,abs,[V],_}|_]}} =
+                nested_stacktrace_1({{'add',{V,x1}},error,badarith},
+                                    {{'abs',V},error,badarg});
+        true ->
+            {caught1,
+             [{?MODULE,my_add,2,_}|_],
+             value2} =
+                nested_stacktrace_1({{'add',{V,x1}},error,badarith},
+                                    {{value,{V,x2}},void,{V,x2}}),
+            {caught1,
+             [{?MODULE,my_add,2,_}|_],
+             {caught2,[{?MODULE,my_abs,1,_}|_]}} =
+                nested_stacktrace_1({{'add',{V,x1}},error,badarith},
+                                    {{'abs',V},error,badarg})
+    end,
+    ok.
+
+nested_stacktrace_1({X1,C1,V1}, {X2,C2,V2}) ->
+    try foo(X1) of
+        V1 -> value1
+    catch
+        C1:V1:S1 ->
+            S1 = erlang:get_stacktrace(),
+            T2 = try foo(X2) of
+                     V2 -> value2
+                 catch
+                     C2:V2:S2 ->
+                         S2 = erlang:get_stacktrace(),
+                         {caught2,S2}
+                 end,
+            {caught1,S1,T2}
+    end.
+
 
 id(I) -> I.
diff --git a/lib/compiler/test/z_SUITE.erl b/lib/compiler/test/z_SUITE.erl
index d864184f4c..cd95d0e733 100644
--- a/lib/compiler/test/z_SUITE.erl
+++ b/lib/compiler/test/z_SUITE.erl
@@ -54,8 +54,7 @@ do_loaded([{M,_}|Ms], E0) ->
 	    _ = M:module_info(functions),
 	    E0
 	catch
-	    C:Error ->
-		Stk = erlang:get_stacktrace(),
+	    C:Error:Stk ->
 		io:format("~p:~p\n~p\n", [C,Error,Stk]),
 		E0 + 1
 	end,
diff --git a/lib/compiler/vsn.mk b/lib/compiler/vsn.mk
index 435a57aac2..082786c7d8 100644
--- a/lib/compiler/vsn.mk
+++ b/lib/compiler/vsn.mk
@@ -1 +1 @@
-COMPILER_VSN = 7.1.3
+COMPILER_VSN = 7.1.4
diff --git a/lib/cosEvent/doc/src/Makefile b/lib/cosEvent/doc/src/Makefile
index ba505d6f7b..4fcb210e5a 100644
--- a/lib/cosEvent/doc/src/Makefile
+++ b/lib/cosEvent/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 1999-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 1999-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 #
@@ -49,31 +49,26 @@ XML_REF3_FILES = \
 	cosEventApp.xml
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml
+	part.xml
 XML_CHAPTER_FILES = \
 	ch_contents.xml \
 	ch_introduction.xml \
 	ch_event_service.xml \
-	notes.xml 
+	notes.xml
 
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
-TECHNICAL_DESCR_FILES = 
+TECHNICAL_DESCR_FILES =
 
 GIF_FILES = \
-	book.gif \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif \
 	e_s_components.gif \
-	e_s_models.gif 
+	e_s_models.gif
 
 
-PS_FILES = 
+PS_FILES =
 
 
 # ----------------------------------------------------
@@ -84,7 +79,7 @@ HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
 	$(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html)
 
 INFO_FILE = ../../info
-EXTRA_FILES = summary.html.src \
+EXTRA_FILES = \
 	$(DEFAULT_GIF_FILES) \
 	$(DEFAULT_HTML_FILES) \
 	$(XML_REF3_FILES:%.xml=$(HTMLDIR)/%.html) \
@@ -97,10 +92,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -130,11 +125,11 @@ gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 $(INDEX_TARGET): $(INDEX_SRC)
 	sed -e 's;%VSN%;$(VSN);' $(INDEX_SRC) > $(INDEX_TARGET)
 
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/cosEvent/doc/src/book.gif b/lib/cosEvent/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/cosEvent/doc/src/book.gif
+++ /dev/null
diff --git a/lib/cosEvent/doc/src/fascicules.xml b/lib/cosEvent/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/cosEvent/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/cosEvent/doc/src/notes.gif b/lib/cosEvent/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/cosEvent/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/cosEvent/doc/src/notes.xml b/lib/cosEvent/doc/src/notes.xml
index fe94cb64d3..ba0b0d88db 100644
--- a/lib/cosEvent/doc/src/notes.xml
+++ b/lib/cosEvent/doc/src/notes.xml
@@ -33,7 +33,22 @@
     <file>notes.xml</file>
   </header>
 
-  <section><title>cosEvent 2.2.1</title>
+  <section><title>cosEvent 2.2.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>cosEvent 2.2.1</title>
 
     <section><title>Improvements and New Features</title>
       <list>
diff --git a/lib/cosEvent/doc/src/part_notes.xml b/lib/cosEvent/doc/src/part_notes.xml
deleted file mode 100644
index 37103a5592..0000000000
--- a/lib/cosEvent/doc/src/part_notes.xml
+++ /dev/null
@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>1999</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>cosEvent Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date>1999-04-20</date>
-    <rev>1.0</rev>
-    <file>part_notes.xml</file>
-  </header>
-  <description>
-    <p>The cosEvent Application is an Erlang implementation of a CORBA Service
-      CosEvent.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/cosEvent/doc/src/ref_man.gif b/lib/cosEvent/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/cosEvent/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/cosEvent/doc/src/summary.html.src b/lib/cosEvent/doc/src/summary.html.src
deleted file mode 100644
index 6196223480..0000000000
--- a/lib/cosEvent/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-Orber OMG Event Service
\ No newline at end of file
diff --git a/lib/cosEvent/doc/src/user_guide.gif b/lib/cosEvent/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/cosEvent/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/cosEvent/vsn.mk b/lib/cosEvent/vsn.mk
index c39bed9fe4..578950294a 100644
--- a/lib/cosEvent/vsn.mk
+++ b/lib/cosEvent/vsn.mk
@@ -1,2 +1,2 @@
-COSEVENT_VSN = 2.2.1
+COSEVENT_VSN = 2.2.2
 
diff --git a/lib/cosEventDomain/doc/src/Makefile b/lib/cosEventDomain/doc/src/Makefile
index 0f18e43547..9faf65394d 100644
--- a/lib/cosEventDomain/doc/src/Makefile
+++ b/lib/cosEventDomain/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2001-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 2001-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 #
@@ -44,31 +44,24 @@ XML_REF3_FILES = \
 	cosEventDomainApp.xml
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml
+	part.xml
 XML_CHAPTER_FILES = \
 	ch_contents.xml \
 	ch_introduction.xml \
 	ch_QoS.xml \
 	ch_event_domain_service.xml \
-	notes.xml 
+	notes.xml
 
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
-TECHNICAL_DESCR_FILES = 
+TECHNICAL_DESCR_FILES =
 
-GIF_FILES = \
-	book.gif \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif
-
-
-PS_FILES = 
+GIF_FILES =
 
+PS_FILES =
 
 # ----------------------------------------------------
 
@@ -78,7 +71,7 @@ HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
 	$(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html)
 
 INFO_FILE = ../../info
-EXTRA_FILES = summary.html.src \
+EXTRA_FILES = \
 	$(DEFAULT_GIF_FILES) \
 	$(DEFAULT_HTML_FILES) \
 	$(XML_REF3_FILES:%.xml=$(HTMLDIR)/%.html) \
@@ -91,10 +84,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -124,11 +117,11 @@ gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 $(INDEX_TARGET): $(INDEX_SRC)
 	sed -e 's;%VSN%;$(VSN);' $(INDEX_SRC) > $(INDEX_TARGET)
 
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/cosEventDomain/doc/src/book.gif b/lib/cosEventDomain/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/cosEventDomain/doc/src/book.gif
+++ /dev/null
diff --git a/lib/cosEventDomain/doc/src/fascicules.xml b/lib/cosEventDomain/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/cosEventDomain/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/cosEventDomain/doc/src/notes.gif b/lib/cosEventDomain/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/cosEventDomain/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/cosEventDomain/doc/src/notes.xml b/lib/cosEventDomain/doc/src/notes.xml
index 5e5bb2c33e..bd0a119ad2 100644
--- a/lib/cosEventDomain/doc/src/notes.xml
+++ b/lib/cosEventDomain/doc/src/notes.xml
@@ -32,7 +32,22 @@
     <file>notes.xml</file>
   </header>
 
-  <section><title>cosEventDomain 1.2.1</title>
+  <section><title>cosEventDomain 1.2.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>cosEventDomain 1.2.1</title>
 
     <section><title>Improvements and New Features</title>
       <list>
diff --git a/lib/cosEventDomain/doc/src/part_notes.xml b/lib/cosEventDomain/doc/src/part_notes.xml
deleted file mode 100644
index af6864decf..0000000000
--- a/lib/cosEventDomain/doc/src/part_notes.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2001</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>cosEventDomain Release Notes</title>
-    <prepared>Niclas Eklund</prepared>
-    <docno></docno>
-    <date>2001-08-20</date>
-    <rev>1.0</rev>
-  </header>
-  <description>
-    <p>The cosEventDomain Application is an Erlang implementation of a CORBA Service
-      CosEventDomainAdmin.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/cosEventDomain/doc/src/ref_man.gif b/lib/cosEventDomain/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/cosEventDomain/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/cosEventDomain/doc/src/summary.html.src b/lib/cosEventDomain/doc/src/summary.html.src
deleted file mode 100644
index 922c956633..0000000000
--- a/lib/cosEventDomain/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-Orber OMG Event Domain Service
\ No newline at end of file
diff --git a/lib/cosEventDomain/doc/src/user_guide.gif b/lib/cosEventDomain/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/cosEventDomain/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/cosEventDomain/vsn.mk b/lib/cosEventDomain/vsn.mk
index 4e10d6ac60..0c063a00f9 100644
--- a/lib/cosEventDomain/vsn.mk
+++ b/lib/cosEventDomain/vsn.mk
@@ -1,2 +1,2 @@
-COSEVENTDOMAIN_VSN = 1.2.1
+COSEVENTDOMAIN_VSN = 1.2.2
 
diff --git a/lib/cosFileTransfer/doc/src/Makefile b/lib/cosFileTransfer/doc/src/Makefile
index 8d8c736f1b..fcaa88c1e2 100644
--- a/lib/cosFileTransfer/doc/src/Makefile
+++ b/lib/cosFileTransfer/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2000-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 2000-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 #
@@ -46,8 +46,7 @@ XML_REF3_FILES = \
 	CosFileTransfer_FileIterator.xml
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml
+	part.xml
 XML_CHAPTER_FILES = \
 	ch_contents.xml \
 	ch_introduction.xml \
@@ -59,18 +58,14 @@ XML_CHAPTER_FILES = \
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
-TECHNICAL_DESCR_FILES = 
+TECHNICAL_DESCR_FILES =
 
 GIF_FILES = \
-	book.gif \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif \
 	CosFileTransfer.gif
 
-PS_FILES = 
+PS_FILES =
 
 # ----------------------------------------------------
 
@@ -83,7 +78,7 @@ HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
 
 INFO_FILE = ../../info
 
-EXTRA_FILES = summary.html.src \
+EXTRA_FILES = \
 	$(DEFAULT_GIF_FILES) \
 	$(DEFAULT_HTML_FILES) \
 	$(XML_REF3_FILES:%.xml=$(HTMLDIR)/%.html)
@@ -95,10 +90,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -127,11 +122,11 @@ gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 $(INDEX_TARGET): $(INDEX_SRC)
 	sed -e 's;%VSN%;$(VSN);' $(INDEX_SRC) > $(INDEX_TARGET)
 
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/cosFileTransfer/doc/src/book.gif b/lib/cosFileTransfer/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/cosFileTransfer/doc/src/book.gif
+++ /dev/null
diff --git a/lib/cosFileTransfer/doc/src/fascicules.xml b/lib/cosFileTransfer/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/cosFileTransfer/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/cosFileTransfer/doc/src/notes.gif b/lib/cosFileTransfer/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/cosFileTransfer/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/cosFileTransfer/doc/src/notes.xml b/lib/cosFileTransfer/doc/src/notes.xml
index 58ab087014..e0b4bdf64b 100644
--- a/lib/cosFileTransfer/doc/src/notes.xml
+++ b/lib/cosFileTransfer/doc/src/notes.xml
@@ -31,7 +31,22 @@
     <file>notes.xml</file>
   </header>
 
-  <section><title>cosFileTransfer 1.2.1</title>
+  <section><title>cosFileTransfer 1.2.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>cosFileTransfer 1.2.1</title>
 
     <section><title>Improvements and New Features</title>
       <list>
diff --git a/lib/cosFileTransfer/doc/src/part_notes.xml b/lib/cosFileTransfer/doc/src/part_notes.xml
deleted file mode 100644
index d91de39b1f..0000000000
--- a/lib/cosFileTransfer/doc/src/part_notes.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2000</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>cosFileTransfer Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date>2000-08-24</date>
-    <rev>1.0</rev>
-  </header>
-  <description>
-    <p>The cosFileTransfer Application is an Erlang implementation of the OMG
-      CORBA FileTransfer Service.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/cosFileTransfer/doc/src/ref_man.gif b/lib/cosFileTransfer/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/cosFileTransfer/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/cosFileTransfer/doc/src/summary.html.src b/lib/cosFileTransfer/doc/src/summary.html.src
deleted file mode 100644
index 4c66e147e9..0000000000
--- a/lib/cosFileTransfer/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-Orber OMG File Transfer Service.
diff --git a/lib/cosFileTransfer/doc/src/user_guide.gif b/lib/cosFileTransfer/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/cosFileTransfer/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/cosFileTransfer/vsn.mk b/lib/cosFileTransfer/vsn.mk
index e271c05242..561f11fbb2 100644
--- a/lib/cosFileTransfer/vsn.mk
+++ b/lib/cosFileTransfer/vsn.mk
@@ -1 +1 @@
-COSFILETRANSFER_VSN = 1.2.1
+COSFILETRANSFER_VSN = 1.2.2
diff --git a/lib/cosNotification/doc/src/Makefile b/lib/cosNotification/doc/src/Makefile
index 6207290101..43ed8294c4 100644
--- a/lib/cosNotification/doc/src/Makefile
+++ b/lib/cosNotification/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2000-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 2000-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 #
@@ -70,8 +70,7 @@ XML_REF3_FILES = \
 
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml
+	part.xml
 XML_CHAPTER_FILES = \
 	ch_contents.xml \
 	ch_introduction.xml \
@@ -85,19 +84,15 @@ XML_CHAPTER_FILES = \
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
-TECHNICAL_DESCR_FILES = 
+TECHNICAL_DESCR_FILES =
 
 GIF_FILES = \
-	book.gif \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif \
 	eventstructure.gif \
 	notificationFlow.gif
 
-PS_FILES = 
+PS_FILES =
 
 # ----------------------------------------------------
 
@@ -107,7 +102,7 @@ HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
 	$(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html)
 
 INFO_FILE = ../../info
-EXTRA_FILES = summary.html.src \
+EXTRA_FILES = \
 	$(DEFAULT_GIF_FILES) \
 	$(DEFAULT_HTML_FILES) \
 	$(XML_REF3_FILES:%.xml=$(HTMLDIR)/%.html) \
@@ -120,10 +115,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -152,11 +147,11 @@ gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 $(INDEX_TARGET): $(INDEX_SRC)
 	sed -e 's;%VSN%;$(VSN);' $(INDEX_SRC) > $(INDEX_TARGET)
 
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/cosNotification/doc/src/book.gif b/lib/cosNotification/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/cosNotification/doc/src/book.gif
+++ /dev/null
diff --git a/lib/cosNotification/doc/src/fascicules.xml b/lib/cosNotification/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/cosNotification/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/cosNotification/doc/src/notes.gif b/lib/cosNotification/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/cosNotification/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/cosNotification/doc/src/notes.xml b/lib/cosNotification/doc/src/notes.xml
index 1237000153..bf0fc73548 100644
--- a/lib/cosNotification/doc/src/notes.xml
+++ b/lib/cosNotification/doc/src/notes.xml
@@ -32,7 +32,22 @@
     <file>notes.xml</file>
   </header>
 
-  <section><title>cosNotification 1.2.2</title>
+  <section><title>cosNotification 1.2.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>cosNotification 1.2.2</title>
 
     <section><title>Improvements and New Features</title>
       <list>
diff --git a/lib/cosNotification/doc/src/part_notes.xml b/lib/cosNotification/doc/src/part_notes.xml
deleted file mode 100644
index c999d885c1..0000000000
--- a/lib/cosNotification/doc/src/part_notes.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2000</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>cosNotification Release Notes</title>
-    <prepared>Niclas Eklund</prepared>
-    <docno></docno>
-    <date>2000-01-31</date>
-    <rev>1.0</rev>
-  </header>
-  <description>
-    <p>The cosNotification Application is an Erlang implementation of the OMG
-      CORBA Notification Service.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/cosNotification/doc/src/ref_man.gif b/lib/cosNotification/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/cosNotification/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/cosNotification/doc/src/summary.html.src b/lib/cosNotification/doc/src/summary.html.src
deleted file mode 100644
index 92ade4f9cd..0000000000
--- a/lib/cosNotification/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-Orber OMG Notification Service
\ No newline at end of file
diff --git a/lib/cosNotification/doc/src/user_guide.gif b/lib/cosNotification/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/cosNotification/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/cosNotification/vsn.mk b/lib/cosNotification/vsn.mk
index 0d95ab4853..1677057670 100644
--- a/lib/cosNotification/vsn.mk
+++ b/lib/cosNotification/vsn.mk
@@ -1,2 +1,2 @@
-COSNOTIFICATION_VSN = 1.2.2
+COSNOTIFICATION_VSN = 1.2.3
 
diff --git a/lib/cosProperty/doc/src/Makefile b/lib/cosProperty/doc/src/Makefile
index 6b210500f9..ec11ca1735 100644
--- a/lib/cosProperty/doc/src/Makefile
+++ b/lib/cosProperty/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2000-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 2000-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 #
@@ -46,11 +46,10 @@ XML_REF3_FILES = \
 	CosPropertyService_PropertiesIterator.xml \
 	CosPropertyService_PropertyNamesIterator.xml
 
-XML_REF6_FILES = 
+XML_REF6_FILES =
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml
+	part.xml
 XML_CHAPTER_FILES = \
 	ch_contents.xml \
 	ch_introduction.xml \
@@ -61,17 +60,13 @@ XML_CHAPTER_FILES = \
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
-TECHNICAL_DESCR_FILES = 
+TECHNICAL_DESCR_FILES =
 
-GIF_FILES = \
-	book.gif \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif
+GIF_FILES =
 
-PS_FILES = 
+PS_FILES =
 
 # ----------------------------------------------------
 
@@ -82,7 +77,7 @@ HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
 
 INFO_FILE = ../../info
 
-EXTRA_FILES = summary.html.src \
+EXTRA_FILES = \
 	$(DEFAULT_GIF_FILES) \
 	$(DEFAULT_HTML_FILES) \
 	$(XML_REF3_FILES:%.xml=$(HTMLDIR)/%.html) \
@@ -97,10 +92,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -129,11 +124,11 @@ gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 $(INDEX_TARGET): $(INDEX_SRC)
 	sed -e 's;%VSN%;$(VSN);' $(INDEX_SRC) > $(INDEX_TARGET)
 
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/cosProperty/doc/src/book.gif b/lib/cosProperty/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/cosProperty/doc/src/book.gif
+++ /dev/null
diff --git a/lib/cosProperty/doc/src/fascicules.xml b/lib/cosProperty/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/cosProperty/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/cosProperty/doc/src/notes.gif b/lib/cosProperty/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/cosProperty/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/cosProperty/doc/src/notes.xml b/lib/cosProperty/doc/src/notes.xml
index e5d22982c5..4de246de67 100644
--- a/lib/cosProperty/doc/src/notes.xml
+++ b/lib/cosProperty/doc/src/notes.xml
@@ -33,7 +33,22 @@
   </header>
 
 
-  <section><title>cosProperty 1.2.2</title>
+  <section><title>cosProperty 1.2.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>cosProperty 1.2.2</title>
 
     <section><title>Improvements and New Features</title>
       <list>
diff --git a/lib/cosProperty/doc/src/part_notes.xml b/lib/cosProperty/doc/src/part_notes.xml
deleted file mode 100644
index bb3221e41c..0000000000
--- a/lib/cosProperty/doc/src/part_notes.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2000</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>cosProperty Release Notes</title>
-    <prepared>Niclas Eklund</prepared>
-    <docno></docno>
-    <date>2000-06-07</date>
-    <rev>1.0</rev>
-  </header>
-  <description>
-    <p>The cosProperty Application is an Erlang implementation of the OMG
-      CORBA Property Service.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/cosProperty/doc/src/ref_man.gif b/lib/cosProperty/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/cosProperty/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/cosProperty/doc/src/summary.html.src b/lib/cosProperty/doc/src/summary.html.src
deleted file mode 100644
index 87370c659c..0000000000
--- a/lib/cosProperty/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-Orber OMG Property Service.
\ No newline at end of file
diff --git a/lib/cosProperty/doc/src/user_guide.gif b/lib/cosProperty/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/cosProperty/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/cosProperty/vsn.mk b/lib/cosProperty/vsn.mk
index 78ba88445d..a3a952346e 100644
--- a/lib/cosProperty/vsn.mk
+++ b/lib/cosProperty/vsn.mk
@@ -1,2 +1,2 @@
-COSPROPERTY_VSN = 1.2.2
+COSPROPERTY_VSN = 1.2.3
 
diff --git a/lib/cosTime/doc/src/Makefile b/lib/cosTime/doc/src/Makefile
index f3fdafa58a..6886d2812c 100644
--- a/lib/cosTime/doc/src/Makefile
+++ b/lib/cosTime/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2000-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 2000-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 #
@@ -46,8 +46,7 @@ XML_REF3_FILES = \
 	CosTimerEvent_TimerEventService.xml \
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml
+	part.xml
 XML_CHAPTER_FILES = \
 	ch_contents.xml \
 	ch_introduction.xml \
@@ -58,17 +57,13 @@ XML_CHAPTER_FILES = \
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
-TECHNICAL_DESCR_FILES = 
+TECHNICAL_DESCR_FILES =
 
-GIF_FILES = \
-	book.gif \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif
+GIF_FILES =
 
-PS_FILES = 
+PS_FILES =
 
 # ----------------------------------------------------
 
@@ -78,7 +73,7 @@ HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
 	$(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html)
 
 INFO_FILE = ../../info
-EXTRA_FILES = summary.html.src \
+EXTRA_FILES = \
 	$(DEFAULT_GIF_FILES) \
 	$(DEFAULT_HTML_FILES) \
 	$(XML_REF3_FILES:%.xml=$(HTMLDIR)/%.html) \
@@ -91,10 +86,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -123,11 +118,11 @@ gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 $(INDEX_TARGET): $(INDEX_SRC)
 	sed -e 's;%VSN%;$(VSN);' $(INDEX_SRC) > $(INDEX_TARGET)
 
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/cosTime/doc/src/book.gif b/lib/cosTime/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/cosTime/doc/src/book.gif
+++ /dev/null
diff --git a/lib/cosTime/doc/src/fascicules.xml b/lib/cosTime/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/cosTime/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/cosTime/doc/src/notes.gif b/lib/cosTime/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/cosTime/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/cosTime/doc/src/notes.xml b/lib/cosTime/doc/src/notes.xml
index 686d9e6add..16e02f8b1f 100644
--- a/lib/cosTime/doc/src/notes.xml
+++ b/lib/cosTime/doc/src/notes.xml
@@ -33,7 +33,22 @@
     <file>notes.xml</file>
   </header>
 
-  <section><title>cosTime 1.2.2</title>
+  <section><title>cosTime 1.2.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>cosTime 1.2.2</title>
 
     <section><title>Improvements and New Features</title>
       <list>
diff --git a/lib/cosTime/doc/src/part_notes.xml b/lib/cosTime/doc/src/part_notes.xml
deleted file mode 100644
index dbc9185038..0000000000
--- a/lib/cosTime/doc/src/part_notes.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2000</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>cosTime Release Notes</title>
-    <prepared>Niclas Eklund</prepared>
-    <docno></docno>
-    <date>2000-01-31</date>
-    <rev>1.0</rev>
-  </header>
-  <description>
-    <p>The cosTime Application is an Erlang implementation of the OMG
-      CORBA Time and TimerEvent Services.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/cosTime/doc/src/ref_man.gif b/lib/cosTime/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/cosTime/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/cosTime/doc/src/summary.html.src b/lib/cosTime/doc/src/summary.html.src
deleted file mode 100644
index 78e383d275..0000000000
--- a/lib/cosTime/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-Orber OMG Timer and TimerEvent Services.
diff --git a/lib/cosTime/doc/src/user_guide.gif b/lib/cosTime/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/cosTime/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/cosTime/vsn.mk b/lib/cosTime/vsn.mk
index 7c9cae2d2f..7d6fcbebcd 100644
--- a/lib/cosTime/vsn.mk
+++ b/lib/cosTime/vsn.mk
@@ -1,2 +1,2 @@
-COSTIME_VSN = 1.2.2
+COSTIME_VSN = 1.2.3
 
diff --git a/lib/cosTransactions/doc/src/Makefile b/lib/cosTransactions/doc/src/Makefile
index b70d7647b1..3c054593a9 100644
--- a/lib/cosTransactions/doc/src/Makefile
+++ b/lib/cosTransactions/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 1999-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 1999-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 #
@@ -49,8 +49,7 @@ XML_REF3_FILES = \
 #	CosTransactions_Synchronization.xml
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml
+	part.xml
 XML_CHAPTER_FILES = \
 	ch_contents.xml \
 	ch_introduction.xml \
@@ -62,17 +61,13 @@ XML_CHAPTER_FILES = \
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
-TECHNICAL_DESCR_FILES = 
+TECHNICAL_DESCR_FILES =
 
-GIF_FILES = \
-	book.gif \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif
+GIF_FILES =
 
-PS_FILES = 
+PS_FILES =
 
 # ----------------------------------------------------
 
@@ -82,7 +77,7 @@ HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
 	$(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html)
 
 INFO_FILE = ../../info
-EXTRA_FILES = summary.html.src \
+EXTRA_FILES = \
 	$(DEFAULT_GIF_FILES) \
 	$(DEFAULT_HTML_FILES) \
 	$(XML_REF3_FILES:%.xml=$(HTMLDIR)/%.html) \
@@ -95,10 +90,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -127,11 +122,11 @@ gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 $(INDEX_TARGET): $(INDEX_SRC)
 	sed -e 's;%VSN%;$(VSN);' $(INDEX_SRC) > $(INDEX_TARGET)
 
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/cosTransactions/doc/src/book.gif b/lib/cosTransactions/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/cosTransactions/doc/src/book.gif
+++ /dev/null
diff --git a/lib/cosTransactions/doc/src/fascicules.xml b/lib/cosTransactions/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/cosTransactions/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/cosTransactions/doc/src/notes.gif b/lib/cosTransactions/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/cosTransactions/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/cosTransactions/doc/src/notes.xml b/lib/cosTransactions/doc/src/notes.xml
index 85ace1208b..2401c04c3f 100644
--- a/lib/cosTransactions/doc/src/notes.xml
+++ b/lib/cosTransactions/doc/src/notes.xml
@@ -33,7 +33,22 @@
     <file>notes.xml</file>
   </header>
 
-  <section><title>cosTransactions 1.3.2</title>
+  <section><title>cosTransactions 1.3.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>cosTransactions 1.3.2</title>
 
     <section><title>Improvements and New Features</title>
       <list>
diff --git a/lib/cosTransactions/doc/src/part_notes.xml b/lib/cosTransactions/doc/src/part_notes.xml
deleted file mode 100644
index 48cc04aa4c..0000000000
--- a/lib/cosTransactions/doc/src/part_notes.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>1999</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>cosTransactions Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date>1999-04-14</date>
-    <rev>2.0</rev>
-  </header>
-  <description>
-    <p>The cosTransactions Application is an Erlang implementation of the OMG
-      CORBA Transaction Service.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/cosTransactions/doc/src/ref_man.gif b/lib/cosTransactions/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/cosTransactions/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/cosTransactions/doc/src/summary.html.src b/lib/cosTransactions/doc/src/summary.html.src
deleted file mode 100644
index 8fb7d6ea20..0000000000
--- a/lib/cosTransactions/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-Orber OMG Transaction Service
\ No newline at end of file
diff --git a/lib/cosTransactions/doc/src/user_guide.gif b/lib/cosTransactions/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/cosTransactions/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/cosTransactions/vsn.mk b/lib/cosTransactions/vsn.mk
index ab163d83c2..bba2058231 100644
--- a/lib/cosTransactions/vsn.mk
+++ b/lib/cosTransactions/vsn.mk
@@ -1 +1 @@
-COSTRANSACTIONS_VSN = 1.3.2
+COSTRANSACTIONS_VSN = 1.3.3
diff --git a/lib/crypto/c_src/Makefile.in b/lib/crypto/c_src/Makefile.in
index af7c209c75..31124ba477 100644
--- a/lib/crypto/c_src/Makefile.in
+++ b/lib/crypto/c_src/Makefile.in
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 1999-2016. All Rights Reserved.
+# Copyright Ericsson AB 1999-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -78,12 +78,16 @@ CRYPTO_STATIC_OBJS = $(OBJDIR)/crypto_static$(TYPEMARKER).o\
 
 NIF_ARCHIVE = $(LIBDIR)/crypto$(TYPEMARKER).a
 
+TEST_ENGINE_OBJS = $(OBJDIR)/otp_test_engine$(TYPEMARKER).o
+
 ifeq ($(findstring win32,$(TARGET)), win32)
 NIF_LIB = $(LIBDIR)/crypto$(TYPEMARKER).dll
 CALLBACK_LIB = $(LIBDIR)/crypto_callback$(TYPEMARKER).dll
+TEST_ENGINE_LIB = $(LIBDIR)/otp_test_engine$(TYPEMARKER).dll
 else
 NIF_LIB = $(LIBDIR)/crypto$(TYPEMARKER).so
 CALLBACK_LIB = $(LIBDIR)/crypto_callback$(TYPEMARKER).so
+TEST_ENGINE_LIB = $(LIBDIR)/otp_test_engine$(TYPEMARKER).so
 endif
 
 ifeq ($(HOST_OS),)
@@ -129,10 +133,22 @@ ALL_STATIC_CFLAGS = $(DED_STATIC_CFLAGS) $(INCLUDES)
 
 _create_dirs := $(shell mkdir -p $(OBJDIR) $(LIBDIR))
 
-debug opt valgrind: $(NIF_LIB) $(CALLBACK_LIB)
+debug opt valgrind: $(NIF_LIB) $(CALLBACK_LIB) $(TEST_ENGINE_LIB) 
 
 static_lib: $(NIF_ARCHIVE)
 
+$(OBJDIR)/otp_test_engine$(TYPEMARKER).o: otp_test_engine.c
+	$(V_at)$(INSTALL_DIR) $(OBJDIR)
+	$(V_CC) -c -o $@ $(ALL_CFLAGS) $<
+
+$(LIBDIR)/otp_test_engine$(TYPEMARKER).so: $(TEST_ENGINE_OBJS)
+	$(V_at)$(INSTALL_DIR) $(LIBDIR)
+	$(V_LD) $(LDFLAGS) -o $@ $^ $(LDLIBS) $(CRYPTO_LINK_LIB)
+
+$(LIBDIR)/otp_test_engine$(TYPEMARKER).dll: $(TEST_ENGINE_OBJS)
+	$(V_at)$(INSTALL_DIR) $(LIBDIR)
+	$(V_LD) $(LDFLAGS) -o $@  $(SSL_DED_LD_RUNTIME_LIBRARY_PATH) -L$(SSL_LIBDIR) $(TEST_ENGINE_OBJS) -l$(SSL_CRYPTO_LIBNAME) -l$(SSL_SSL_LIBNAME)
+
 $(OBJDIR)/%$(TYPEMARKER).o: %.c
 	$(V_at)$(INSTALL_DIR) $(OBJDIR)
 	$(V_CC) -c -o $@ $(ALL_CFLAGS) $<
@@ -170,6 +186,7 @@ ifeq ($(findstring win32,$(TARGET)), win32)
 	rm -f $(LIBDIR)/crypto.debug.dll
 	rm -f $(LIBDIR)/crypto_callback.dll
 	rm -f $(LIBDIR)/crypto_callback.debug.dll
+	rm -f $(LIBDIR)/otp_test_engine.dll
 else
 	rm -f $(LIBDIR)/crypto.so
 	rm -f $(LIBDIR)/crypto.debug.so
@@ -177,6 +194,7 @@ else
 	rm -f $(LIBDIR)/crypto_callback.so
 	rm -f $(LIBDIR)/crypto_callback.debug.so
 	rm -f $(LIBDIR)/crypto_callback.valgrind.so
+	rm -f $(LIBDIR)/otp_test_engine.so
 endif
 	rm -f $(OBJDIR)/crypto.o
 	rm -f $(OBJDIR)/crypto_static.o
@@ -187,6 +205,7 @@ endif
 	rm -f $(OBJDIR)/crypto_callback.o
 	rm -f $(OBJDIR)/crypto_callback.debug.o
 	rm -f $(OBJDIR)/crypto_callback.valgrind.o
+	rm -f $(OBJDIR)/otp_test_engine.o
 	rm -f core *~
 
 docs:
@@ -206,6 +225,8 @@ ifeq ($(DYNAMIC_CRYPTO_LIB),yes)
 	$(INSTALL_PROGRAM) $(CALLBACK_OBJS) "$(RELSYSDIR)/priv/obj"
 	$(INSTALL_PROGRAM) $(CALLBACK_LIB) "$(RELSYSDIR)/priv/lib"
 endif
+	$(INSTALL_PROGRAM) $(TEST_ENGINE_OBJS) "$(RELSYSDIR)/priv/obj"
+	$(INSTALL_PROGRAM) $(TEST_ENGINE_LIB) "$(RELSYSDIR)/priv/lib"
 
 release_docs_spec:
 
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c
index 53fe233790..6957d25774 100644
--- a/lib/crypto/c_src/crypto.c
+++ b/lib/crypto/c_src/crypto.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * %CopyrightBegin%
  *
  * Copyright Ericsson AB 2010-2017. All Rights Reserved.
@@ -19,8 +19,8 @@
  */
 
 /*
- * Purpose:  Dynamically loadable NIF library for cryptography. 
- * Based on OpenSSL. 
+ * Purpose:  Dynamically loadable NIF library for cryptography.
+ * Based on OpenSSL.
  */
 
 #ifdef __WIN32__
@@ -60,6 +60,8 @@
 #include <openssl/rand.h>
 #include <openssl/evp.h>
 #include <openssl/hmac.h>
+#include <openssl/engine.h>
+#include <openssl/err.h>
 
 /* Helper macro to construct a OPENSSL_VERSION_NUMBER.
  * See openssl/opensslv.h
@@ -79,9 +81,9 @@
  *
  * Therefor works tests like this as intendend:
  *     OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,0)
- * (The test is for example "2.4.2" >= "1.0.0" although the test 
+ * (The test is for example "2.4.2" >= "1.0.0" although the test
  *  with the cloned OpenSSL test would be "1.0.1" >= "1.0.0")
- *     
+ *
  * But tests like this gives wrong result:
  *     OPENSSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION_PLAIN(1,1,0)
  * (The test is false since "2.4.2" < "1.1.0".  It should have been
@@ -119,6 +121,10 @@
 #include <openssl/modes.h>
 #endif
 
+#if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION(0,9,8,'h')
+#define HAS_ENGINE_SUPPORT
+#endif
+
 #include "crypto_callback.h"
 
 #if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(0,9,8)	\
@@ -240,7 +246,7 @@
 
 /* This shall correspond to the similar macro in crypto.erl */
 /* Current value is: erlang:system_info(context_reductions) * 10 */
-#define MAX_BYTES_TO_NIF 20000 
+#define MAX_BYTES_TO_NIF 20000
 
 #define CONSUME_REDS(NifEnv, Ibin)			\
 do {							\
@@ -277,7 +283,7 @@ static HMAC_CTX *HMAC_CTX_new()
 static void HMAC_CTX_free(HMAC_CTX *ctx)
 {
     HMAC_CTX_cleanup(ctx);
-    return CRYPTO_free(ctx);
+    CRYPTO_free(ctx);
 }
 
 #define EVP_MD_CTX_new() EVP_MD_CTX_create()
@@ -342,6 +348,10 @@ static INLINE void RSA_get0_crt_params(const RSA *r, const BIGNUM **dmp1, const
 
 static INLINE int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key);
 static INLINE int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g);
+static INLINE void DSA_get0_pqg(const DSA *dsa,
+			       const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
+static INLINE void DSA_get0_key(const DSA *dsa,
+			       const BIGNUM **pub_key, const BIGNUM **priv_key);
 
 static INLINE int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key)
 {
@@ -358,6 +368,23 @@ static INLINE int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g)
     return 1;
 }
 
+static INLINE void
+DSA_get0_pqg(const DSA *dsa, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
+{
+    *p = dsa->p;
+    *q = dsa->q;
+    *g = dsa->g;
+}
+
+static INLINE void
+DSA_get0_key(const DSA *dsa, const BIGNUM **pub_key, const BIGNUM **priv_key)
+{
+    if (pub_key) *pub_key = dsa->pub_key;
+    if (priv_key) *priv_key = dsa->priv_key;
+}
+
+
+
 static INLINE int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);
 static INLINE int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
 static INLINE int DH_set_length(DH *dh, long length);
@@ -387,6 +414,8 @@ static INLINE int DH_set_length(DH *dh, long length)
     return 1;
 }
 
+
+
 static INLINE void
 DH_get0_pqg(const DH *dh, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
 {
@@ -398,8 +427,8 @@ DH_get0_pqg(const DH *dh, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
 static INLINE void
 DH_get0_key(const DH *dh, const BIGNUM **pub_key, const BIGNUM **priv_key)
 {
-    *pub_key = dh->pub_key;
-    *priv_key = dh->priv_key;
+    if (pub_key) *pub_key = dh->pub_key;
+    if (priv_key) *priv_key = dh->priv_key;
 }
 
 #else /* End of compatibility definitions. */
@@ -448,6 +477,7 @@ static ERL_NIF_TERM dh_generate_parameters_nif(ErlNifEnv* env, int argc, const E
 static ERL_NIF_TERM dh_check(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM dh_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM dh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM privkey_to_pubkey_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM srp_value_B_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM srp_user_secret_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM srp_host_secret_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
@@ -466,6 +496,22 @@ static ERL_NIF_TERM aes_gcm_decrypt_NO_EVP(ErlNifEnv* env, int argc, const ERL_N
 static ERL_NIF_TERM chacha20_poly1305_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM chacha20_poly1305_decrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 
+static int get_engine_load_cmd_list(ErlNifEnv* env, const ERL_NIF_TERM term, char **cmds, int i);
+static ERL_NIF_TERM engine_by_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_finish_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_free_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_load_dynamic_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_ctrl_cmd_strings_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_register_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_unregister_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_add_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_remove_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_get_first_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_get_next_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_get_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM engine_get_all_methods_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
 /* helpers */
 static void init_algorithms_types(ErlNifEnv*);
 static void init_digest_types(ErlNifEnv* env);
@@ -477,6 +523,10 @@ static int term2point(ErlNifEnv* env, ERL_NIF_TERM term,
 #endif
 static ERL_NIF_TERM bin_from_bn(ErlNifEnv* env, const BIGNUM *bn);
 
+#ifdef HAS_ENGINE_SUPPORT
+static int zero_terminate(ErlNifBinary bin, char **buf);
+#endif
+
 static int library_refc = 0; /* number of users of this dynamic library */
 
 static ErlNifFunc nif_funcs[] = {
@@ -516,6 +566,7 @@ static ErlNifFunc nif_funcs[] = {
     {"dh_check", 1, dh_check},
     {"dh_generate_key_nif", 4, dh_generate_key_nif},
     {"dh_compute_key_nif", 3, dh_compute_key_nif},
+    {"privkey_to_pubkey_nif", 2, privkey_to_pubkey_nif},
     {"srp_value_B_nif", 5, srp_value_B_nif},
     {"srp_user_secret_nif", 7, srp_user_secret_nif},
     {"srp_host_secret_nif", 5, srp_host_secret_nif},
@@ -529,12 +580,27 @@ static ErlNifFunc nif_funcs[] = {
     {"aes_gcm_decrypt", 5, aes_gcm_decrypt},
 
     {"chacha20_poly1305_encrypt", 4, chacha20_poly1305_encrypt},
-    {"chacha20_poly1305_decrypt", 5, chacha20_poly1305_decrypt}
+    {"chacha20_poly1305_decrypt", 5, chacha20_poly1305_decrypt},
+
+    {"engine_by_id_nif", 1, engine_by_id_nif},
+    {"engine_init_nif", 1, engine_init_nif},
+    {"engine_finish_nif", 1, engine_finish_nif},
+    {"engine_free_nif", 1, engine_free_nif},
+    {"engine_load_dynamic_nif", 0, engine_load_dynamic_nif},
+    {"engine_ctrl_cmd_strings_nif", 3, engine_ctrl_cmd_strings_nif},
+    {"engine_register_nif", 2, engine_register_nif},
+    {"engine_unregister_nif", 2, engine_unregister_nif},
+    {"engine_add_nif", 1, engine_add_nif},
+    {"engine_remove_nif", 1, engine_remove_nif},
+    {"engine_get_first_nif", 0, engine_get_first_nif},
+    {"engine_get_next_nif", 1, engine_get_next_nif},
+    {"engine_get_id_nif", 1, engine_get_id_nif},
+    {"engine_get_all_methods_nif", 0, engine_get_all_methods_nif}
+
 };
 
 ERL_NIF_INIT(crypto,nif_funcs,load,NULL,upgrade,unload)
 
-
 #define MD5_CTX_LEN       (sizeof(MD5_CTX))
 #define MD4_CTX_LEN       (sizeof(MD4_CTX))
 #define RIPEMD160_CTX_LEN (sizeof(RIPEMD160_CTX))
@@ -603,7 +669,33 @@ static ERL_NIF_TERM atom_sha512;
 static ERL_NIF_TERM atom_md5;
 static ERL_NIF_TERM atom_ripemd160;
 
-
+#ifdef HAS_ENGINE_SUPPORT
+static ERL_NIF_TERM atom_bad_engine_method;
+static ERL_NIF_TERM atom_bad_engine_id;
+static ERL_NIF_TERM atom_ctrl_cmd_failed;
+static ERL_NIF_TERM atom_engine_init_failed;
+static ERL_NIF_TERM atom_register_engine_failed;
+static ERL_NIF_TERM atom_add_engine_failed;
+static ERL_NIF_TERM atom_remove_engine_failed;
+static ERL_NIF_TERM atom_engine_method_not_supported;
+
+static ERL_NIF_TERM atom_engine_method_rsa;
+static ERL_NIF_TERM atom_engine_method_dsa;
+static ERL_NIF_TERM atom_engine_method_dh;
+static ERL_NIF_TERM atom_engine_method_rand;
+static ERL_NIF_TERM atom_engine_method_ecdh;
+static ERL_NIF_TERM atom_engine_method_ecdsa;
+static ERL_NIF_TERM atom_engine_method_ciphers;
+static ERL_NIF_TERM atom_engine_method_digests;
+static ERL_NIF_TERM atom_engine_method_store;
+static ERL_NIF_TERM atom_engine_method_pkey_meths;
+static ERL_NIF_TERM atom_engine_method_pkey_asn1_meths;
+static ERL_NIF_TERM atom_engine_method_ec;
+
+static ERL_NIF_TERM atom_engine;
+static ERL_NIF_TERM atom_key_id;
+static ERL_NIF_TERM atom_password;
+#endif
 
 static ErlNifResourceType* hmac_context_rtype;
 struct hmac_context
@@ -728,11 +820,13 @@ static struct cipher_type_t cipher_types[] =
 
 static struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len);
 
+
 /*
 #define PRINTF_ERR0(FMT) enif_fprintf(stderr, FMT "\n")
 #define PRINTF_ERR1(FMT, A1) enif_fprintf(stderr, FMT "\n", A1)
 #define PRINTF_ERR2(FMT, A1, A2) enif_fprintf(stderr, FMT "\n", A1, A2)
 */
+
 #define PRINTF_ERR0(FMT)
 #define PRINTF_ERR1(FMT,A1)
 #define PRINTF_ERR2(FMT,A1,A2)
@@ -758,6 +852,23 @@ static void evp_cipher_ctx_dtor(ErlNifEnv* env, struct evp_cipher_ctx* ctx) {
 }
 #endif
 
+// Engine
+#ifdef HAS_ENGINE_SUPPORT
+static ErlNifResourceType* engine_ctx_rtype;
+struct engine_ctx {
+    ENGINE *engine;
+    char *id;
+};
+static void engine_ctx_dtor(ErlNifEnv* env, struct engine_ctx* ctx) {
+    PRINTF_ERR0("engine_ctx_dtor");
+    if(ctx->id) {
+        PRINTF_ERR1("  non empty ctx->id=%s", ctx->id);
+        enif_free(ctx->id);
+    } else
+         PRINTF_ERR0("  empty ctx->id=NULL");
+}
+#endif
+
 static int verify_lib_version(void)
 {
     const unsigned long libv = SSLeay();
@@ -793,7 +904,7 @@ static char crypto_callback_name[] = "crypto_callback";
 static int change_basename(ErlNifBinary* bin, char* buf, int bufsz, const char* newfile)
 {
     int i;
-    
+
     for (i = bin->size; i > 0; i--) {
 	if (bin->data[i-1] == '/')
 	    break;
@@ -869,12 +980,23 @@ static int initialize(ErlNifEnv* env, ERL_NIF_TERM load_info)
         return __LINE__;
     }
 #endif
+#ifdef HAS_ENGINE_SUPPORT
+    engine_ctx_rtype = enif_open_resource_type(env, NULL, "ENGINE_CTX",
+                                                   (ErlNifResourceDtor*) engine_ctx_dtor,
+                                                   ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
+                                                   NULL);
+    if (!engine_ctx_rtype) {
+        PRINTF_ERR0("CRYPTO: Could not open resource type 'ENGINE_CTX'");
+        return __LINE__;
+    }
+
     if (library_refc > 0) {
 	/* Repeated loading of this library (module upgrade).
 	 * Atoms and callbacks are already set, we are done.
 	 */
 	return 0;
     }
+#endif 
 
     atom_true  = enif_make_atom(env,"true");
     atom_false = enif_make_atom(env,"false");
@@ -952,6 +1074,33 @@ static int initialize(ErlNifEnv* env, ERL_NIF_TERM load_info)
     atom_md5 = enif_make_atom(env,"md5");
     atom_ripemd160 = enif_make_atom(env,"ripemd160");
 
+#ifdef HAS_ENGINE_SUPPORT
+    atom_bad_engine_method = enif_make_atom(env,"bad_engine_method");
+    atom_bad_engine_id = enif_make_atom(env,"bad_engine_id");
+    atom_ctrl_cmd_failed = enif_make_atom(env,"ctrl_cmd_failed");
+    atom_engine_init_failed = enif_make_atom(env,"engine_init_failed");
+    atom_engine_method_not_supported = enif_make_atom(env,"engine_method_not_supported");
+    atom_add_engine_failed = enif_make_atom(env,"add_engine_failed");
+    atom_remove_engine_failed = enif_make_atom(env,"remove_engine_failed");
+
+    atom_engine_method_rsa = enif_make_atom(env,"engine_method_rsa");
+    atom_engine_method_dsa = enif_make_atom(env,"engine_method_dsa");
+    atom_engine_method_dh = enif_make_atom(env,"engine_method_dh");
+    atom_engine_method_rand = enif_make_atom(env,"engine_method_rand");
+    atom_engine_method_ecdh = enif_make_atom(env,"engine_method_ecdh");
+    atom_engine_method_ecdsa = enif_make_atom(env,"engine_method_ecdsa");
+    atom_engine_method_store = enif_make_atom(env,"engine_method_store");
+    atom_engine_method_ciphers = enif_make_atom(env,"engine_method_ciphers");
+    atom_engine_method_digests = enif_make_atom(env,"engine_method_digests");
+    atom_engine_method_pkey_meths = enif_make_atom(env,"engine_method_pkey_meths");
+    atom_engine_method_pkey_asn1_meths = enif_make_atom(env,"engine_method_pkey_asn1_meths");
+    atom_engine_method_ec = enif_make_atom(env,"engine_method_ec");
+
+    atom_engine = enif_make_atom(env,"engine");
+    atom_key_id = enif_make_atom(env,"key_id");
+    atom_password = enif_make_atom(env,"password");
+#endif
+
     init_digest_types(env);
     init_cipher_types(env);
     init_algorithms_types(env);
@@ -973,24 +1122,24 @@ static int initialize(ErlNifEnv* env, ERL_NIF_TERM load_info)
 #else /* !HAVE_DYNAMIC_CRYPTO_LIB */
     funcp = &get_crypto_callbacks;
 #endif
-    
+
 #ifdef OPENSSL_THREADS
     enif_system_info(&sys_info, sizeof(sys_info));
     if (sys_info.scheduler_threads > 1) {
-	nlocks = CRYPTO_num_locks(); 
+	nlocks = CRYPTO_num_locks();
     }
     /* else no need for locks */
 #endif
-    
+
     ccb = (*funcp)(nlocks);
-    
+
     if (!ccb || ccb->sizeof_me != sizeof(*ccb)) {
 	PRINTF_ERR0("Invalid 'crypto_callbacks'");
 	return __LINE__;
     }
-    
+
     CRYPTO_set_mem_functions(ccb->crypto_alloc, ccb->crypto_realloc, ccb->crypto_free);
-    
+
 #ifdef OPENSSL_THREADS
     if (nlocks > 0) {
 	CRYPTO_set_locking_callback(ccb->locking_function);
@@ -1186,11 +1335,11 @@ static ERL_NIF_TERM info_lib(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]
      * Version string is still from library though.
      */
 
-    memcpy(enif_make_new_binary(env, name_sz, &name_term), libname, name_sz);    
+    memcpy(enif_make_new_binary(env, name_sz, &name_term), libname, name_sz);
     memcpy(enif_make_new_binary(env, ver_sz, &ver_term), ver, ver_sz);
 
     return enif_make_list1(env, enif_make_tuple3(env, name_term,
-						 enif_make_int(env, ver_num),						 
+						 enif_make_int(env, ver_num),
 						 ver_term));
 }
 
@@ -1225,6 +1374,8 @@ static ERL_NIF_TERM enable_fips_mode(ErlNifEnv* env, int argc, const ERL_NIF_TER
     }
 }
 
+
+#if defined(HAVE_EC)
 static ERL_NIF_TERM make_badarg_maybe(ErlNifEnv* env)
 {
     ERL_NIF_TERM reason;
@@ -1233,6 +1384,7 @@ static ERL_NIF_TERM make_badarg_maybe(ErlNifEnv* env)
     else
 	return enif_make_badarg(env);
 }
+#endif
 
 static ERL_NIF_TERM hash_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
 {/* (Type, Data) */
@@ -1668,7 +1820,7 @@ static ERL_NIF_TERM hmac_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM
 {/* (Context, Data) */
     ErlNifBinary data;
     struct hmac_context* obj;
-    
+
     if (!enif_get_resource(env, argv[0], hmac_context_rtype, (void**)&obj)
 	|| !enif_inspect_iolist_as_binary(env, argv[1], &data)) {
 	return enif_make_badarg(env);
@@ -1704,13 +1856,13 @@ static ERL_NIF_TERM hmac_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM
 	enif_mutex_unlock(obj->mtx);
 	return enif_make_badarg(env);
     }
-    
+
     HMAC_Final(obj->ctx, mac_buf, &mac_len);
     HMAC_CTX_free(obj->ctx);
     obj->alive = 0;
     enif_mutex_unlock(obj->mtx);
 
-    if (argc == 2 && req_len < mac_len) { 
+    if (argc == 2 && req_len < mac_len) {
         /* Only truncate to req_len bytes if asked. */
         mac_len = req_len;
     }
@@ -2021,7 +2173,7 @@ static ERL_NIF_TERM aes_ctr_stream_init(ErlNifEnv* env, int argc, const ERL_NIF_
 }
 
 static ERL_NIF_TERM aes_ctr_stream_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* ({Key, IVec, ECount, Num}, Data) */    
+{/* ({Key, IVec, ECount, Num}, Data) */
     ErlNifBinary key_bin, ivec_bin, text_bin, ecount_bin;
     AES_KEY aes_key;
     unsigned int num;
@@ -2042,14 +2194,14 @@ static ERL_NIF_TERM aes_ctr_stream_encrypt(ErlNifEnv* env, int argc, const ERL_N
         return enif_make_badarg(env);
     }
 
-    ivec2_buf = enif_make_new_binary(env, ivec_bin.size, &ivec2_term); 
+    ivec2_buf = enif_make_new_binary(env, ivec_bin.size, &ivec2_term);
     ecount2_buf = enif_make_new_binary(env, ecount_bin.size, &ecount2_term);
-    
+
     memcpy(ivec2_buf, ivec_bin.data, 16);
     memcpy(ecount2_buf, ecount_bin.data, ecount_bin.size);
 
     AES_ctr128_encrypt((unsigned char *) text_bin.data,
-		       enif_make_new_binary(env, text_bin.size, &cipher_term), 
+		       enif_make_new_binary(env, text_bin.size, &cipher_term),
 		       text_bin.size, &aes_key, ivec2_buf, ecount2_buf, &num);
 
     num2_term = enif_make_uint(env, num);
@@ -2352,7 +2504,7 @@ out_err:
 }
 
 static ERL_NIF_TERM strong_rand_bytes_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Bytes) */     
+{/* (Bytes) */
     unsigned bytes;
     unsigned char* data;
     ERL_NIF_TERM ret;
@@ -2446,7 +2598,7 @@ static ERL_NIF_TERM rand_uniform_nif(ErlNifEnv* env, int argc, const ERL_NIF_TER
 
     bn_to = BN_new();
     BN_sub(bn_to, bn_rand, bn_from);
-    BN_pseudo_rand_range(bn_rand, bn_to);      
+    BN_pseudo_rand_range(bn_rand, bn_to);
     BN_add(bn_rand, bn_rand, bn_from);
     dlen = BN_num_bytes(bn_rand);
     data = enif_make_new_binary(env, dlen+4, &ret);
@@ -2464,7 +2616,7 @@ static ERL_NIF_TERM mod_exp_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM arg
     BIGNUM *bn_base=NULL, *bn_exponent=NULL, *bn_modulo=NULL, *bn_result;
     BN_CTX *bn_ctx;
     unsigned char* ptr;
-    unsigned dlen;      
+    unsigned dlen;
     unsigned bin_hdr; /* return type: 0=plain binary, 4: mpint */
     unsigned extra_byte;
     ERL_NIF_TERM ret;
@@ -2485,7 +2637,7 @@ static ERL_NIF_TERM mod_exp_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM arg
     dlen = BN_num_bytes(bn_result);
     extra_byte = bin_hdr && BN_is_bit_set(bn_result, dlen*8-1);
     ptr = enif_make_new_binary(env, bin_hdr+extra_byte+dlen, &ret);
-    if (bin_hdr) {	
+    if (bin_hdr) {
 	put_int32(ptr, extra_byte+dlen);
 	ptr[4] = 0; /* extra zeroed byte to ensure a positive mpint */
 	ptr += bin_hdr + extra_byte;
@@ -2545,6 +2697,7 @@ static struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len)
     return NULL;
 }
 
+
 static ERL_NIF_TERM do_exor(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
 {/* (Data1, Data2) */
     ErlNifBinary d1, d2;
@@ -2578,7 +2731,7 @@ static ERL_NIF_TERM rc4_set_key(ErlNifEnv* env, int argc, const ERL_NIF_TERM arg
 	return enif_make_badarg(env);
     }
     RC4_set_key((RC4_KEY*)enif_make_new_binary(env, sizeof(RC4_KEY), &ret),
-		key.size, key.data);        
+		key.size, key.data);
     return ret;
 #else
     return enif_raise_exception(env, atom_notsup);
@@ -2846,7 +2999,7 @@ static ERL_NIF_TERM rsa_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF
 static ERL_NIF_TERM dh_generate_parameters_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
 {/* (PrimeLen, Generator) */
     int prime_len, generator;
-    DH* dh_params;
+    DH* dh_params = NULL;
     int p_len, g_len;
     unsigned char *p_ptr, *g_ptr;
     ERL_NIF_TERM ret_p, ret_g;
@@ -2857,8 +3010,8 @@ static ERL_NIF_TERM dh_generate_parameters_nif(ErlNifEnv* env, int argc, const E
 
 	return enif_make_badarg(env);
     }
-    dh_params = DH_generate_parameters(prime_len, generator, NULL, NULL);
-    if (dh_params == NULL) {
+
+    if (DH_generate_parameters_ex(dh_params, prime_len, generator, NULL)) {
 	return atom_error;
     }
     DH_get0_pqg(dh_params, &dh_p, &dh_q, &dh_g);
@@ -2871,7 +3024,7 @@ static ERL_NIF_TERM dh_generate_parameters_nif(ErlNifEnv* env, int argc, const E
     BN_bn2bin(dh_g, g_ptr);
     ERL_VALGRIND_MAKE_MEM_DEFINED(p_ptr, p_len);
     ERL_VALGRIND_MAKE_MEM_DEFINED(g_ptr, g_len);
-    return enif_make_list2(env, ret_p, ret_g);    
+    return enif_make_list2(env, ret_p, ret_g);
 }
 
 static ERL_NIF_TERM dh_check(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
@@ -2881,9 +3034,9 @@ static ERL_NIF_TERM dh_check(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]
     ERL_NIF_TERM ret, head, tail;
     BIGNUM *dh_p, *dh_g;
 
-    if (!enif_get_list_cell(env, argv[0], &head, &tail)   
+    if (!enif_get_list_cell(env, argv[0], &head, &tail)
 	|| !get_bn_from_bin(env, head, &dh_p)
-	|| !enif_get_list_cell(env, tail, &head, &tail)   
+	|| !enif_get_list_cell(env, tail, &head, &tail)
 	|| !get_bn_from_bin(env, head, &dh_g)
 	|| !enif_is_empty_list(env,tail)) {
 
@@ -2900,12 +3053,12 @@ static ERL_NIF_TERM dh_check(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]
 	else if (i & DH_NOT_SUITABLE_GENERATOR)	ret = atom_not_suitable_generator;
 	else ret = enif_make_tuple2(env, atom_unknown, enif_make_uint(env, i));
     }
-    else { /* Check Failed */       
+    else { /* Check Failed */
 	ret = enif_make_tuple2(env, atom_error, atom_check_failed);
     }
     DH_free(dh_params);
     return ret;
-}   
+}
 
 static ERL_NIF_TERM dh_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
 {/* (PrivKey|undefined, DHParams=[P,G], Mpint, Len|0) */
@@ -3007,7 +3160,7 @@ static ERL_NIF_TERM dh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_T
 	i = DH_compute_key(ret_bin.data, other_pub_key, dh_params);
 	if (i > 0) {
 	    if (i != ret_bin.size) {
-		enif_realloc_binary(&ret_bin, i); 
+		enif_realloc_binary(&ret_bin, i);
 	    }
 	    ret = enif_make_binary(env, &ret_bin);
 	}
@@ -3803,9 +3956,69 @@ static int get_pkey_sign_options(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF
 }
 
 
+#ifdef HAS_ENGINE_SUPPORT
+static int get_engine_and_key_id(ErlNifEnv *env, ERL_NIF_TERM key, char ** id, ENGINE **e)
+{
+    ERL_NIF_TERM engine_res, key_id_term;
+    struct engine_ctx *ctx;
+    ErlNifBinary key_id_bin;
+
+    if (!enif_get_map_value(env, key, atom_engine, &engine_res) ||
+        !enif_get_resource(env, engine_res, engine_ctx_rtype, (void**)&ctx) ||
+        !enif_get_map_value(env, key, atom_key_id, &key_id_term) ||
+        !enif_inspect_binary(env, key_id_term, &key_id_bin)) {
+        return 0;
+    }
+    else {
+        *e = ctx->engine;
+        return zero_terminate(key_id_bin, id);
+    }
+}
+
+
+static char *get_key_password(ErlNifEnv *env, ERL_NIF_TERM key) {
+    ERL_NIF_TERM tmp_term;
+    ErlNifBinary pwd_bin;
+    char *pwd;
+    if (enif_get_map_value(env, key, atom_password, &tmp_term) &&
+        enif_inspect_binary(env, tmp_term, &pwd_bin) &&
+        zero_terminate(pwd_bin, &pwd)
+        ) return pwd;
+
+    return NULL;
+}
+
+static int zero_terminate(ErlNifBinary bin, char **buf) {
+    *buf = enif_alloc(bin.size+1);
+    if (!*buf)
+        return 0;
+    memcpy(*buf, bin.data, bin.size);
+    *(*buf+bin.size) = 0;
+    return 1;
+}
+#endif
+
 static int get_pkey_private_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key, EVP_PKEY **pkey)
 {
-    if (algorithm == atom_rsa) {
+    if (enif_is_map(env, key)) {
+#ifdef HAS_ENGINE_SUPPORT
+        /* Use key stored in engine */
+        ENGINE *e;
+        char *id;
+        char *password;
+
+        if (!get_engine_and_key_id(env, key, &id, &e))
+            return PKEY_BADARG;
+        password = get_key_password(env, key);
+        *pkey = ENGINE_load_private_key(e, id, NULL, password);
+        if (!*pkey)
+            return PKEY_BADARG;
+        enif_free(id);
+#else
+        return PKEY_BADARG;
+#endif
+    }
+    else if (algorithm == atom_rsa) {
 	RSA *rsa = RSA_new();
 
 	if (!get_rsa_private_key(env, key, rsa)) {
@@ -3866,7 +4079,24 @@ static int get_pkey_private_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_
 static int get_pkey_public_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key,
 			       EVP_PKEY **pkey)
 {
-    if (algorithm == atom_rsa) {
+    if (enif_is_map(env, key)) {
+#ifdef HAS_ENGINE_SUPPORT
+        /* Use key stored in engine */
+        ENGINE *e;
+        char *id;
+        char *password;
+
+        if (!get_engine_and_key_id(env, key, &id, &e))
+            return PKEY_BADARG;
+        password = get_key_password(env, key);
+        *pkey = ENGINE_load_public_key(e, id, NULL, password);
+        if (!pkey)
+            return PKEY_BADARG;
+        enif_free(id);
+#else
+        return PKEY_BADARG;
+#endif
+    } else  if (algorithm == atom_rsa) {
 	RSA *rsa = RSA_new();
 
 	if (!get_rsa_public_key(env, key, rsa)) {
@@ -3924,7 +4154,7 @@ static int get_pkey_public_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_T
 }
 
 static ERL_NIF_TERM pkey_sign_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
-{/* (Algorithm, Type, Data|{digest,Digest}, Key, Options) */
+{/* (Algorithm, Type, Data|{digest,Digest}, Key|#{}, Options) */
     int i;
     const EVP_MD *md = NULL;
     unsigned char md_value[EVP_MAX_MD_SIZE];
@@ -3944,6 +4174,13 @@ enif_get_atom(env,argv[0],buf,1024,ERL_NIF_LATIN1); printf("algo=%s ",buf);
 enif_get_atom(env,argv[1],buf,1024,ERL_NIF_LATIN1); printf("hash=%s ",buf);
 printf("\r\n");
 */
+
+#ifndef HAS_ENGINE_SUPPORT
+    if (enif_is_map(env, argv[3])) {
+        return atom_notsup;
+    }
+#endif
+
     i = get_pkey_sign_digest(env, argv[0], argv[1], argv[2], md_value, &md, &tbs, &tbslen);
     if (i != PKEY_OK) {
 	if (i == PKEY_NOTSUP)
@@ -3965,10 +4202,9 @@ printf("\r\n");
     }
 
 #ifdef HAS_EVP_PKEY_CTX
-/* printf("EVP interface\r\n"); 
- */
     ctx = EVP_PKEY_CTX_new(pkey, NULL);
     if (!ctx) goto badarg;
+
     if (EVP_PKEY_sign_init(ctx) <= 0) goto badarg;
     if (md != NULL && EVP_PKEY_CTX_set_signature_md(ctx, md) <= 0) goto badarg;
 
@@ -4070,6 +4306,12 @@ static ERL_NIF_TERM pkey_verify_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM
     unsigned char *tbs; /* data to be signed */
     size_t tbslen;
 
+#ifndef HAS_ENGINE_SUPPORT
+    if (enif_is_map(env, argv[4])) {
+        return atom_notsup;
+    }
+#endif
+
     if (!enif_inspect_binary(env, argv[3], &sig_bin)) {
 	return enif_make_badarg(env);
     }
@@ -4095,7 +4337,7 @@ static ERL_NIF_TERM pkey_verify_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM
     }
 
 #ifdef HAS_EVP_PKEY_CTX
-/* printf("EVP interface\r\n"); 
+/* printf("EVP interface\r\n");
  */
     ctx = EVP_PKEY_CTX_new(pkey, NULL);
     if (!ctx) goto badarg;
@@ -4280,7 +4522,13 @@ static ERL_NIF_TERM pkey_crypt_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM
     int algo_init = 0;
 
 /* char algo[1024]; */
-   
+
+#ifndef HAS_ENGINE_SUPPORT
+    if (enif_is_map(env, argv[2])) {
+        return atom_notsup;
+    }
+#endif
+
     if (!enif_inspect_binary(env, argv[1], &in_bin)) {
 	return enif_make_badarg(env);
     }
@@ -4409,7 +4657,6 @@ static ERL_NIF_TERM pkey_crypt_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM
 
     enif_alloc_binary(outlen, &out_bin);
 
-    ERL_VALGRIND_ASSERT_MEM_DEFINED(out_bin.data, out_bin.size);
     if (is_private) {
 	if (is_encrypt) {
 	    /* private_encrypt */
@@ -4542,6 +4789,80 @@ static ERL_NIF_TERM pkey_crypt_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM
 
 
 /*--------------------------------*/
+static ERL_NIF_TERM privkey_to_pubkey_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{ /* (Algorithm, PrivKey | KeyMap) */
+    EVP_PKEY *pkey;
+    ERL_NIF_TERM alg = argv[0];
+    ERL_NIF_TERM result[8];
+    if (get_pkey_private_key(env, alg, argv[1], &pkey) != PKEY_OK) {
+	return enif_make_badarg(env);
+    }
+
+    if (alg == atom_rsa) {
+        const BIGNUM *n = NULL, *e = NULL, *d = NULL;
+        RSA *rsa = EVP_PKEY_get1_RSA(pkey);
+        if (rsa) {
+            RSA_get0_key(rsa, &n, &e, &d);
+            result[0] = bin_from_bn(env, e);  // Exponent E
+            result[1] = bin_from_bn(env, n);  // Modulus N = p*q
+            EVP_PKEY_free(pkey);
+            return enif_make_list_from_array(env, result, 2);
+        }
+
+    } else if (argv[0] == atom_dss) {
+        const BIGNUM *p = NULL, *q = NULL, *g = NULL, *pub_key = NULL;
+        DSA *dsa = EVP_PKEY_get1_DSA(pkey);
+        if (dsa) {
+            DSA_get0_pqg(dsa, &p, &q, &g);
+            DSA_get0_key(dsa, &pub_key, NULL);
+            result[0] = bin_from_bn(env, p);
+            result[1] = bin_from_bn(env, q);
+            result[2] = bin_from_bn(env, g);
+            result[3] = bin_from_bn(env, pub_key);
+            EVP_PKEY_free(pkey);
+            return enif_make_list_from_array(env, result, 4);
+        }
+
+    } else if (argv[0] == atom_ecdsa) {
+#if defined(HAVE_EC)
+        /* not yet implemented
+          EC_KEY *ec = EVP_PKEY_get1_EC_KEY(pkey);
+          if (ec) {
+          / * Example of result:
+               {
+                 Curve =  {Field, Prime, Point, Order, CoFactor} =
+                    { 
+                      Field =  {prime_field,<<255,...,255>>},
+                      Prime = {<<255,...,252>>,
+                               <<90,...,75>>,
+                               <<196,...,144>>
+                              },
+                      Point =    <<4,...,245>>,
+                      Order =    <<255,...,81>>,
+                      CoFactor = <<1>>
+                    },
+                Key = <<151,...,62>>
+                }
+              or
+              { 
+                Curve =
+                    {characteristic_two_field, 
+                     M,
+                     Basis = {tpbasis, _}
+                           | {ppbasis, k1, k2, k3}
+                    },
+                Key
+               }
+        * /
+            EVP_PKEY_free(pkey);
+            return enif_make_list_from_array(env, ..., ...);
+        */
+#endif
+    }
+    
+    if (pkey) EVP_PKEY_free(pkey);
+    return enif_make_badarg(env);
+}
 
 /*================================================================*/
 
@@ -4554,3 +4875,600 @@ static ERL_NIF_TERM rand_seed_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM a
     RAND_seed(seed_bin.data,seed_bin.size);
     return atom_ok;
 }
+
+/*================================================================*/
+/* Engine */
+/*================================================================*/
+static ERL_NIF_TERM engine_by_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (EngineId) */
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM ret;
+    ErlNifBinary engine_id_bin;
+    char *engine_id;
+    ENGINE *engine;
+    struct engine_ctx *ctx;
+
+    // Get Engine Id
+    if(!enif_inspect_binary(env, argv[0], &engine_id_bin)) {
+        PRINTF_ERR0("engine_by_id_nif Leaved: badarg");
+        return enif_make_badarg(env);
+    } else {
+        engine_id = enif_alloc(engine_id_bin.size+1);
+        (void) memcpy(engine_id, engine_id_bin.data, engine_id_bin.size);
+        engine_id[engine_id_bin.size] = '\0';
+    }
+
+    engine = ENGINE_by_id(engine_id);
+    if(!engine) {
+        enif_free(engine_id);
+        PRINTF_ERR0("engine_by_id_nif Leaved: {error, bad_engine_id}");
+        return enif_make_tuple2(env, atom_error, atom_bad_engine_id);
+    }
+
+    ctx = enif_alloc_resource(engine_ctx_rtype, sizeof(struct engine_ctx));
+    ctx->engine = engine;
+    ctx->id = engine_id;
+
+    ret = enif_make_resource(env, ctx);
+    enif_release_resource(ctx);
+
+    return enif_make_tuple2(env, atom_ok, ret);
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM ret = atom_ok;
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
+        PRINTF_ERR0("engine_init_nif Leaved: Parameter not an engine resource object");
+        return enif_make_badarg(env);
+    }
+    if (!ENGINE_init(ctx->engine)) {
+        //ERR_print_errors_fp(stderr);
+        PRINTF_ERR0("engine_init_nif Leaved: {error, engine_init_failed}");
+        return enif_make_tuple2(env, atom_error, atom_engine_init_failed);
+    }
+
+    return ret;
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_free_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
+        PRINTF_ERR0("engine_free_nif Leaved: Parameter not an engine resource object");
+        return enif_make_badarg(env);
+    }
+
+    ENGINE_free(ctx->engine);
+    return atom_ok;
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_finish_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
+        PRINTF_ERR0("engine_finish_nif Leaved: Parameter not an engine resource object");
+        return enif_make_badarg(env);
+    }
+
+    ENGINE_finish(ctx->engine);
+    return atom_ok;
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_load_dynamic_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* () */
+#ifdef HAS_ENGINE_SUPPORT
+    ENGINE_load_dynamic();
+    return atom_ok;
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_ctrl_cmd_strings_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine, Commands) */
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM ret = atom_ok;
+    unsigned int cmds_len = 0;
+    char **cmds = NULL;
+    struct engine_ctx *ctx;
+    int i, optional = 0;
+
+    // Get Engine
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
+        PRINTF_ERR0("engine_ctrl_cmd_strings_nif Leaved: Parameter not an engine resource object");
+        return enif_make_badarg(env);
+    }
+
+    PRINTF_ERR1("Engine Id:  %s\r\n", ENGINE_get_id(ctx->engine));
+
+    // Get Command List
+    if(!enif_get_list_length(env, argv[1], &cmds_len)) {
+        PRINTF_ERR0("engine_ctrl_cmd_strings_nif Leaved: Bad Command List");
+        return enif_make_badarg(env);
+    } else {
+        cmds_len *= 2; // Key-Value list from erlang
+        cmds = enif_alloc((cmds_len+1)*sizeof(char*));
+        if(get_engine_load_cmd_list(env, argv[1], cmds, 0)) {
+            PRINTF_ERR0("engine_ctrl_cmd_strings_nif Leaved: Couldn't read Command List");
+            ret = enif_make_badarg(env);
+            goto error;
+        }
+    }
+
+    if(!enif_get_int(env, argv[2], &optional)) {
+        PRINTF_ERR0("engine_ctrl_cmd_strings_nif Leaved: Parameter optional not an integer");
+        return enif_make_badarg(env);
+    }
+
+    for(i = 0; i < cmds_len; i+=2) {
+        PRINTF_ERR2("Cmd:  %s:%s\r\n",
+                   cmds[i] ? cmds[i] : "(NULL)",
+                   cmds[i+1] ? cmds[i+1] : "(NULL)");
+        if(!ENGINE_ctrl_cmd_string(ctx->engine, cmds[i], cmds[i+1], optional)) {
+            PRINTF_ERR2("Command failed:  %s:%s\r\n",
+                        cmds[i] ? cmds[i] : "(NULL)",
+                        cmds[i+1] ? cmds[i+1] : "(NULL)");
+            //ENGINE_free(ctx->engine);
+            ret = enif_make_tuple2(env, atom_error, atom_ctrl_cmd_failed);
+            PRINTF_ERR0("engine_ctrl_cmd_strings_nif Leaved: {error, ctrl_cmd_failed}");
+            goto error;
+        }
+    }
+
+ error:
+    for(i = 0; cmds != NULL && cmds[i] != NULL; i++)
+        enif_free(cmds[i]);    
+    enif_free(cmds);
+    return ret;
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_add_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
+        PRINTF_ERR0("engine_add_nif Leaved: Parameter not an engine resource object");
+        return enif_make_badarg(env);
+    }
+
+    if (!ENGINE_add(ctx->engine)) {
+        PRINTF_ERR0("engine_add_nif Leaved: {error, add_engine_failed}");
+        return enif_make_tuple2(env, atom_error, atom_add_engine_failed);
+    }
+    return atom_ok;
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_remove_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
+        PRINTF_ERR0("engine_remove_nif Leaved: Parameter not an engine resource object");
+        return enif_make_badarg(env);
+    }
+
+    if (!ENGINE_remove(ctx->engine)) {
+        PRINTF_ERR0("engine_remove_nif Leaved: {error, remove_engine_failed}");
+        return enif_make_tuple2(env, atom_error, atom_remove_engine_failed);
+    }
+    return atom_ok;
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_register_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine, EngineMethod) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+    unsigned int method;
+
+    // Get Engine
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
+        PRINTF_ERR0("engine_register_nif Leaved: Parameter not an engine resource object");
+        return enif_make_badarg(env);
+    }
+    // Get Method
+    if (!enif_get_uint(env, argv[1], &method)) {
+        PRINTF_ERR0("engine_register_nif Leaved: Parameter Method not an uint");
+        return enif_make_badarg(env);
+    }
+
+    switch(method)
+    {
+#ifdef ENGINE_METHOD_RSA
+    case ENGINE_METHOD_RSA:
+        if (!ENGINE_register_RSA(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+#ifdef ENGINE_METHOD_DSA
+    case ENGINE_METHOD_DSA:
+        if (!ENGINE_register_DSA(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+#ifdef ENGINE_METHOD_DH
+    case ENGINE_METHOD_DH:
+        if (!ENGINE_register_DH(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+#ifdef ENGINE_METHOD_RAND
+    case ENGINE_METHOD_RAND:
+        if (!ENGINE_register_RAND(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+#ifdef ENGINE_METHOD_ECDH
+    case ENGINE_METHOD_ECDH:
+        if (!ENGINE_register_ECDH(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+#ifdef ENGINE_METHOD_ECDSA
+    case ENGINE_METHOD_ECDSA:
+        if (!ENGINE_register_ECDSA(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+#ifdef ENGINE_METHOD_STORE
+    case ENGINE_METHOD_STORE:
+        if (!ENGINE_register_STORE(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+#ifdef ENGINE_METHOD_CIPHERS
+    case ENGINE_METHOD_CIPHERS:
+        if (!ENGINE_register_ciphers(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+#ifdef ENGINE_METHOD_DIGESTS
+    case ENGINE_METHOD_DIGESTS:
+        if (!ENGINE_register_digests(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+#ifdef ENGINE_METHOD_PKEY_METHS
+    case ENGINE_METHOD_PKEY_METHS:
+        if (!ENGINE_register_pkey_meths(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+#ifdef ENGINE_METHOD_PKEY_ASN1_METHS
+    case ENGINE_METHOD_PKEY_ASN1_METHS:
+        if (!ENGINE_register_pkey_asn1_meths(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+#ifdef ENGINE_METHOD_EC
+    case ENGINE_METHOD_EC:
+        if (!ENGINE_register_EC(ctx->engine))
+            return enif_make_tuple2(env, atom_error, atom_register_engine_failed);
+        break;
+#endif
+    default:
+        return  enif_make_tuple2(env, atom_error, atom_engine_method_not_supported);
+        break;
+    }
+    return atom_ok;
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_unregister_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine, EngineMethod) */
+#ifdef HAS_ENGINE_SUPPORT
+    struct engine_ctx *ctx;
+    unsigned int method;
+
+    // Get Engine
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
+        PRINTF_ERR0("engine_unregister_nif Leaved: Parameter not an engine resource object");
+        return enif_make_badarg(env);
+    }
+    // Get Method
+    if (!enif_get_uint(env, argv[1], &method)) {
+        PRINTF_ERR0("engine_unregister_nif Leaved: Parameter Method not an uint");
+        return enif_make_badarg(env);
+    }
+
+    switch(method)
+    {
+#ifdef ENGINE_METHOD_RSA
+    case ENGINE_METHOD_RSA:
+        ENGINE_unregister_RSA(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_DSA
+    case ENGINE_METHOD_DSA:
+        ENGINE_unregister_DSA(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_DH
+    case ENGINE_METHOD_DH:
+        ENGINE_unregister_DH(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_RAND
+    case ENGINE_METHOD_RAND:
+        ENGINE_unregister_RAND(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_ECDH
+    case ENGINE_METHOD_ECDH:
+        ENGINE_unregister_ECDH(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_ECDSA
+    case ENGINE_METHOD_ECDSA:
+        ENGINE_unregister_ECDSA(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_STORE
+    case ENGINE_METHOD_STORE:
+        ENGINE_unregister_STORE(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_CIPHERS
+    case ENGINE_METHOD_CIPHERS:
+        ENGINE_unregister_ciphers(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_DIGESTS
+    case ENGINE_METHOD_DIGESTS:
+        ENGINE_unregister_digests(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_PKEY_METHS
+    case ENGINE_METHOD_PKEY_METHS:
+        ENGINE_unregister_pkey_meths(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_PKEY_ASN1_METHS
+    case ENGINE_METHOD_PKEY_ASN1_METHS:
+        ENGINE_unregister_pkey_asn1_meths(ctx->engine);
+        break;
+#endif
+#ifdef ENGINE_METHOD_EC
+    case ENGINE_METHOD_EC:
+        ENGINE_unregister_EC(ctx->engine);
+        break;
+#endif
+    default:
+        break;
+    }
+    return atom_ok;
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_get_first_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM ret;
+    ENGINE *engine;
+    ErlNifBinary engine_bin;
+    struct engine_ctx *ctx;
+
+    engine = ENGINE_get_first();
+    if(!engine) {
+        enif_alloc_binary(0, &engine_bin);
+        engine_bin.size = 0;
+        return enif_make_tuple2(env, atom_ok, enif_make_binary(env, &engine_bin));
+    }
+
+    ctx = enif_alloc_resource(engine_ctx_rtype, sizeof(struct engine_ctx));
+    ctx->engine = engine;
+    ctx->id = NULL;
+
+    ret = enif_make_resource(env, ctx);
+    enif_release_resource(ctx);
+
+    return enif_make_tuple2(env, atom_ok, ret);
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_get_next_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM ret;
+    ENGINE *engine;
+    ErlNifBinary engine_bin;
+    struct engine_ctx *ctx, *next_ctx;
+
+    // Get Engine
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
+        PRINTF_ERR0("engine_get_next_nif Leaved: Parameter not an engine resource object");
+        return enif_make_badarg(env);
+    }
+    engine = ENGINE_get_next(ctx->engine);
+    if (!engine) {
+        enif_alloc_binary(0, &engine_bin);
+        engine_bin.size = 0;
+        return enif_make_tuple2(env, atom_ok, enif_make_binary(env, &engine_bin));
+    }
+
+    next_ctx = enif_alloc_resource(engine_ctx_rtype, sizeof(struct engine_ctx));
+    next_ctx->engine = engine;
+    next_ctx->id = NULL;
+
+    ret = enif_make_resource(env, next_ctx);
+    enif_release_resource(next_ctx);
+
+    return enif_make_tuple2(env, atom_ok, ret);
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_get_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Engine) */
+#ifdef HAS_ENGINE_SUPPORT
+    ErlNifBinary engine_id_bin;
+    const char *engine_id;
+    int size;
+    struct engine_ctx *ctx;
+
+    // Get Engine
+    if (!enif_get_resource(env, argv[0], engine_ctx_rtype, (void**)&ctx)) {
+        PRINTF_ERR0("engine_get_id_nif Leaved: Parameter not an engine resource object");
+        return enif_make_badarg(env);
+    }
+
+    engine_id = ENGINE_get_id(ctx->engine);
+    if (!engine_id) {
+        enif_alloc_binary(0, &engine_id_bin);
+        engine_id_bin.size = 0;
+        return enif_make_tuple2(env, atom_ok, enif_make_binary(env, &engine_id_bin));
+    }
+
+    size = strlen(engine_id);
+    enif_alloc_binary(size, &engine_id_bin);
+    engine_id_bin.size = size;
+    memcpy(engine_id_bin.data, engine_id, size);
+
+    return enif_make_tuple2(env, atom_ok, enif_make_binary(env, &engine_id_bin));
+#else
+    return atom_notsup;
+#endif
+}
+
+static int get_engine_load_cmd_list(ErlNifEnv* env, const ERL_NIF_TERM term, char **cmds, int i)
+{
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM head, tail;
+    const ERL_NIF_TERM *tmp_tuple;
+    ErlNifBinary tmpbin;
+    int arity;
+    char* tmpstr;
+
+    if(!enif_is_empty_list(env, term)) {
+        if(!enif_get_list_cell(env, term, &head, &tail)) {
+            cmds[i] = NULL;
+            return -1;
+        } else {
+            if(!enif_get_tuple(env, head, &arity, &tmp_tuple)  || arity != 2) {
+                cmds[i] = NULL;
+                return -1;
+            } else {
+                if(!enif_inspect_binary(env, tmp_tuple[0], &tmpbin)) {
+                    cmds[i] = NULL;
+                    return -1;
+                } else {
+                    tmpstr = enif_alloc(tmpbin.size+1);
+                    (void) memcpy(tmpstr, tmpbin.data, tmpbin.size);
+                    tmpstr[tmpbin.size] = '\0';
+                    cmds[i++] = tmpstr;
+                }
+                if(!enif_inspect_binary(env, tmp_tuple[1], &tmpbin)) {
+                    cmds[i] = NULL;
+                    return -1;
+                } else {
+                    if(tmpbin.size == 0)
+                        cmds[i++] = NULL;
+                    else {
+                        tmpstr = enif_alloc(tmpbin.size+1);
+                        (void) memcpy(tmpstr, tmpbin.data, tmpbin.size);
+                        tmpstr[tmpbin.size] = '\0';
+                        cmds[i++] = tmpstr;
+                    }
+                }
+                return get_engine_load_cmd_list(env, tail, cmds, i);
+            }
+        }
+    } else {
+        cmds[i] = NULL;
+        return 0;
+    }
+#else
+    return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM engine_get_all_methods_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* () */
+#ifdef HAS_ENGINE_SUPPORT
+    ERL_NIF_TERM method_array[12];
+    int i = 0;
+
+#ifdef ENGINE_METHOD_RSA
+    method_array[i++] = atom_engine_method_rsa;
+#endif
+#ifdef ENGINE_METHOD_DSA
+    method_array[i++] = atom_engine_method_dsa;
+#endif
+#ifdef ENGINE_METHOD_DH
+    method_array[i++] = atom_engine_method_dh;
+#endif
+#ifdef ENGINE_METHOD_RAND
+    method_array[i++] = atom_engine_method_rand;
+#endif
+#ifdef ENGINE_METHOD_ECDH
+    method_array[i++] = atom_engine_method_ecdh;
+#endif
+#ifdef ENGINE_METHOD_ECDSA
+    method_array[i++] = atom_engine_method_ecdsa;
+#endif
+#ifdef ENGINE_METHOD_STORE
+    method_array[i++] = atom_engine_method_store;
+#endif
+#ifdef ENGINE_METHOD_CIPHERS
+    method_array[i++] = atom_engine_method_ciphers;
+#endif
+#ifdef ENGINE_METHOD_DIGESTS
+    method_array[i++] = atom_engine_method_digests;
+#endif
+#ifdef ENGINE_METHOD_PKEY_METHS
+    method_array[i++] = atom_engine_method_pkey_meths;
+#endif
+#ifdef ENGINE_METHOD_PKEY_ASN1_METHS
+    method_array[i++] = atom_engine_method_pkey_asn1_meths;
+#endif
+#ifdef ENGINE_METHOD_EC
+    method_array[i++] = atom_engine_method_ec;
+#endif
+
+    return enif_make_list_from_array(env, method_array, i);
+#else
+    return atom_notsup;
+#endif
+}
diff --git a/lib/crypto/c_src/otp_test_engine.c b/lib/crypto/c_src/otp_test_engine.c
new file mode 100644
index 0000000000..5c6122c06a
--- /dev/null
+++ b/lib/crypto/c_src/otp_test_engine.c
@@ -0,0 +1,264 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2017-2017. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifdef _WIN32
+#define OPENSSL_OPT_WINDLL
+#endif
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/engine.h>
+#include <openssl/md5.h>
+#include <openssl/rsa.h>
+#include <openssl/pem.h>
+
+#define PACKED_OPENSSL_VERSION(MAJ, MIN, FIX, P)	\
+    ((((((((MAJ << 8) | MIN) << 8 ) | FIX) << 8) | (P-'a'+1)) << 4) | 0xf)
+
+#define PACKED_OPENSSL_VERSION_PLAIN(MAJ, MIN, FIX) \
+    PACKED_OPENSSL_VERSION(MAJ,MIN,FIX,('a'-1))
+
+#if OPENSSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION_PLAIN(1,1,0) \
+    || defined(LIBRESSL_VERSION_NUMBER)
+#define OLD
+#endif
+
+static const char *test_engine_id = "MD5";
+static const char *test_engine_name = "MD5 test engine";
+
+/* The callback that does the job of fetching keys on demand by the Engine */
+EVP_PKEY* test_key_load(ENGINE *er, const char *id, UI_METHOD *ui_method, void *callback_data);
+
+
+static int test_init(ENGINE *e) {
+    printf("OTP Test Engine Initializatzion!\r\n");
+    
+    /* Load all digest and cipher algorithms. Needed for password protected private keys */
+    OpenSSL_add_all_algorithms();
+
+    return 111;
+}
+
+static void add_test_data(unsigned char *md, unsigned int len)
+{
+    unsigned int i;
+
+    for (i=0; i<len; i++) {
+        md[i] = (unsigned char)(i & 0xff);
+    }
+}
+
+/* MD5 part */
+#undef data
+#ifdef OLD
+#define data(ctx) ((MD5_CTX *)ctx->md_data)
+#endif
+
+static int test_engine_md5_init(EVP_MD_CTX *ctx) {
+    fprintf(stderr, "MD5 initialized\r\n");
+#ifdef OLD
+    return MD5_Init(data(ctx));
+#else
+    return 1;
+#endif
+}
+
+static int test_engine_md5_update(EVP_MD_CTX *ctx,const void *data, size_t count)
+{
+    fprintf(stderr, "MD5 update\r\n");
+#ifdef OLD
+    return MD5_Update(data(ctx), data, (size_t)count);
+#else
+    return 1;
+#endif
+}
+
+static int test_engine_md5_final(EVP_MD_CTX *ctx,unsigned char *md) {
+#ifdef OLD
+    int ret;
+
+    fprintf(stderr, "MD5 final size of EVP_MD: %lu\r\n", sizeof(EVP_MD));
+    ret = MD5_Final(md, data(ctx));
+
+    if (ret > 0) {
+         add_test_data(md, MD5_DIGEST_LENGTH);
+    }
+    return ret;
+#else
+    fprintf(stderr, "MD5 final\r\n");
+    add_test_data(md, MD5_DIGEST_LENGTH);
+    return 1;
+#endif
+}
+
+#ifdef OLD
+static EVP_MD test_engine_md5_method=  {
+        NID_md5,                      /* The name ID for MD5 */
+        NID_undef,                    /* IGNORED: MD5 with private key encryption NID */
+        MD5_DIGEST_LENGTH,            /* Size of MD5 result, in bytes */
+        0,                            /* Flags */
+        test_engine_md5_init,         /* digest init */
+        test_engine_md5_update,       /* digest update */
+        test_engine_md5_final,        /* digest final */
+        NULL,                         /* digest copy */
+        NULL,                         /* digest cleanup */
+        EVP_PKEY_NULL_method,         /* IGNORED: pkey methods */
+        MD5_CBLOCK,                   /* Internal blocksize, see rfc1321/md5.h */
+        sizeof(EVP_MD *) + sizeof(MD5_CTX),
+        NULL,                          /* IGNORED: control function */
+};
+#endif
+
+static int test_digest_ids[] = {NID_md5};
+
+static int test_engine_digest_selector(ENGINE *e, const EVP_MD **digest,
+        const int **nids, int nid) {
+    int ok = 1;
+    if (!digest) {
+        *nids = test_digest_ids;
+        fprintf(stderr, "Digest is empty! Nid:%d\r\n", nid);
+        return 2;
+    }
+    fprintf(stderr, "Digest no %d requested\r\n",nid);
+    if (nid == NID_md5) {
+#ifdef OLD
+        *digest = &test_engine_md5_method;
+#else
+        EVP_MD *md = EVP_MD_meth_new(NID_md5, NID_undef);
+        if (!md ||
+            !EVP_MD_meth_set_result_size(md, MD5_DIGEST_LENGTH) ||
+            !EVP_MD_meth_set_flags(md, 0) ||
+            !EVP_MD_meth_set_init(md,  test_engine_md5_init) ||
+            !EVP_MD_meth_set_update(md,  test_engine_md5_update) ||
+            !EVP_MD_meth_set_final(md,  test_engine_md5_final) ||
+            !EVP_MD_meth_set_copy(md,  NULL) ||
+            !EVP_MD_meth_set_cleanup(md,  NULL) ||
+            !EVP_MD_meth_set_input_blocksize(md, MD5_CBLOCK) ||
+            !EVP_MD_meth_set_app_datasize(md, sizeof(EVP_MD *) + sizeof(MD5_CTX)) ||
+            !EVP_MD_meth_set_ctrl(md, NULL))
+            {
+                ok = 0;
+                *digest = NULL;
+            } else
+            {
+                *digest = md;
+            }
+#endif
+    }
+    else {
+        ok = 0;
+        *digest = NULL;
+    }
+    
+    return ok;
+}
+
+
+static int bind_helper(ENGINE * e, const char *id)
+{
+    if (!ENGINE_set_id(e, test_engine_id) ||
+        !ENGINE_set_name(e, test_engine_name) ||
+        !ENGINE_set_init_function(e, test_init) ||
+        !ENGINE_set_digests(e, &test_engine_digest_selector) ||
+        /* For testing of key storage in an Engine: */
+        !ENGINE_set_load_privkey_function(e, &test_key_load) ||
+        !ENGINE_set_load_pubkey_function(e, &test_key_load)
+    )
+        return 0;
+
+    return 1;
+}
+
+IMPLEMENT_DYNAMIC_CHECK_FN();
+
+IMPLEMENT_DYNAMIC_BIND_FN(bind_helper);
+
+/********************************************************
+ *
+ * Engine storage simulation
+ *
+ */
+int pem_passwd_cb_fun(char *buf, int size, int rwflag, void *password);
+
+EVP_PKEY* test_key_load(ENGINE *er, const char *id, UI_METHOD *ui_method, void *callback_data)
+{
+    EVP_PKEY *pkey = NULL;
+    FILE *f = fopen(id, "r");
+
+    if (!f) {
+            fprintf(stderr, "%s:%d fopen(%s) failed\r\n", __FILE__,__LINE__,id);
+            return NULL;
+    }
+
+    /* First try to read as a private key. If that fails, try to read as a public key: */
+    pkey = PEM_read_PrivateKey(f, NULL, pem_passwd_cb_fun, callback_data);
+    if (!pkey) {
+        /* ERR_print_errors_fp (stderr); */
+        fclose(f);
+        f = fopen(id, "r");
+        pkey = PEM_read_PUBKEY(f, NULL, NULL, NULL);
+    }
+    fclose(f);
+    
+    if (!pkey) {
+        fprintf(stderr, "%s:%d Key read from file %s failed.\r\n", __FILE__,__LINE__,id);
+        if (callback_data) 
+            fprintf(stderr, "Pwd = \"%s\".\r\n", (char *)callback_data);
+        fprintf(stderr, "Contents of file \"%s\":\r\n",id);
+        f = fopen(id, "r");
+        { /* Print the contents of the key file */
+            char c;
+            while (!feof(f)) {
+                switch (c=fgetc(f)) {
+                case '\n':
+                case '\r': putc('\r',stderr); putc('\n',stderr); break;
+                default: putc(c, stderr);
+                }
+            }
+        }
+        fprintf(stderr, "File contents printed.\r\n");
+        fclose(f);
+        return NULL;
+    }
+    
+    return pkey;
+}
+
+
+int pem_passwd_cb_fun(char *buf, int size, int rwflag, void *password) 
+{ 
+    int i;
+
+    fprintf(stderr, "In pem_passwd_cb_fun\r\n");
+    if (!password)
+        return 0;
+
+    i = strlen(password);
+    if (i < size) {
+        /* whole pwd (incl terminating 0) fits */
+        fprintf(stderr, "Got FULL pwd %d(%d) chars\r\n", i, size);
+        memcpy(buf, (char*)password, i+1);
+        return i+1;
+    } else {
+        fprintf(stderr, "Got TO LONG pwd %d(%d) chars\r\n", i, size);
+        /* meaningless with a truncated password */
+        return 0;
+    }
+}
diff --git a/lib/crypto/doc/src/Makefile b/lib/crypto/doc/src/Makefile
index 9c503b8fe0..aa987d2b39 100644
--- a/lib/crypto/doc/src/Makefile
+++ b/lib/crypto/doc/src/Makefile
@@ -9,11 +9,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # The Initial Developer of the Original Code is Ericsson Utvecklings AB.
 # Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
 # AB. All Rights Reserved.''
-# 
+#
 #     $Id$
 #
 include $(ERL_TOP)/make/target.mk
@@ -38,13 +38,13 @@ XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = crypto.xml
 XML_REF6_FILES = crypto_app.xml
 
-XML_PART_FILES = release_notes.xml usersguide.xml
-XML_CHAPTER_FILES = notes.xml licenses.xml fips.xml
+XML_PART_FILES = usersguide.xml
+XML_CHAPTER_FILES = notes.xml licenses.xml fips.xml engine_load.xml engine_keys.xml
 
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES)  $(XML_REF6_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
 GIF_FILES =
 
@@ -63,9 +63,9 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -73,7 +73,6 @@ XML_FLAGS +=
 $(HTMLDIR)/%.gif: %.gif
 	$(INSTALL_DATA) $< $@
 
-
 docs: pdf html man
 
 $(TOP_PDF_FILE): $(XML_FILES)
@@ -86,7 +85,7 @@ man: $(MAN3_FILES) $(MAN6_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt valgrind: 
+debug opt valgrind:
 
 clean clean_docs clean_tex:
 	rm -rf $(HTMLDIR)/*
@@ -97,7 +96,7 @@ clean clean_docs clean_tex:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -114,4 +113,3 @@ release_docs_spec: docs
 
 
 release_spec:
-
diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml
index 8c30d3d50c..3a5efd0bea 100644
--- a/lib/crypto/doc/src/crypto.xml
+++ b/lib/crypto/doc/src/crypto.xml
@@ -11,7 +11,7 @@
       Licensed under the Apache License, Version 2.0 (the "License");
       you may not use this file except in compliance with the License.
       You may obtain a copy of the License at
- 
+
           http://www.apache.org/licenses/LICENSE-2.0
 
       Unless required by applicable law or agreed to in writing, software
@@ -19,7 +19,6 @@
       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
       See the License for the specific language governing permissions and
       limitations under the License.
-
     </legalnotice>
 
     <title>crypto</title>
@@ -68,11 +67,11 @@
 
  <section>
     <title>DATA TYPES </title>
-    
-    <code>key_value()  = integer() | binary() </code>
+
+    <code>key_value() = integer() | binary() </code>
     <p>Always <c>binary()</c> when used as return value</p>
 
-    <code>rsa_public()  = [key_value()] = [E, N]  </code>
+    <code>rsa_public() = [key_value()] = [E, N]  </code>
     <p> Where E is the public exponent and N is public modulus. </p>
 
     <code>rsa_private() = [key_value()] = [E, N, D] | [E, N, D, P1, P2, E1, E2, C] </code>
@@ -85,7 +84,7 @@
     <code>dss_public() = [key_value()] = [P, Q, G, Y] </code>
     <p>Where P, Q and G are the dss parameters and Y is the public key.</p>
 
-    <code>dss_private() =  [key_value()] = [P, Q, G, X] </code>
+    <code>dss_private() = [key_value()] = [P, Q, G, X] </code>
     <p>Where P, Q and G are the dss parameters and X is the private key.</p>
 
     <code>srp_public() = key_value() </code>
@@ -109,15 +108,16 @@
 
     <code>ecdh_private() = key_value() </code>
 
-    <code>ecdh_params() =  ec_named_curve() | ec_explicit_curve()</code>
+    <code>ecdh_params() = ec_named_curve() | ec_explicit_curve()</code>
 
     <code>ec_explicit_curve() =
-    {ec_field(), Prime :: key_value(), Point :: key_value(), Order :: integer(), CoFactor :: none | integer()} </code>
+    {ec_field(), Prime :: key_value(), Point :: key_value(), Order :: integer(),
+     CoFactor :: none | integer()} </code>
 
     <code>ec_field() = {prime_field, Prime :: integer()} |
     {characteristic_two_field, M :: integer(), Basis :: ec_basis()}</code>
 
-    <code>ec_basis() =  {tpbasis, K :: non_neg_integer()} |
+    <code>ec_basis() = {tpbasis, K :: non_neg_integer()} |
     {ppbasis, K1 :: non_neg_integer(), K2 :: non_neg_integer(), K3 :: non_neg_integer()} |
     onbasis</code>
 
@@ -136,16 +136,34 @@
     See also <seealso marker="#supports-0">crypto:supports/0</seealso>
     </p>
 
+    <marker id="engine_key_ref_type"/>
+    <code>engine_key_ref() = #{engine   := engine_ref(),
+                               key_id   := key_id(),
+                               password => password()}</code>
+
+    <code>engine_ref() = term()</code>
+    <p>The result of a call to <seealso marker="#engine_load-3">engine_load/3</seealso>.
+    </p>
+
+    <code>key_id() = string() | binary()</code>
+    <p>Identifies the key to be used. The format depends on the loaded engine. It is passed to
+    the <c>ENGINE_load_(private|public)_key</c> functions in libcrypto.
+    </p>
+
+    <code>password() = string() | binary()</code>
+    <p>The key's password
+    </p>
+
      <code>stream_cipher() = rc4 | aes_ctr </code>
 
-     <code>block_cipher() =  aes_cbc | aes_cfb8 | aes_cfb128 | aes_ige256 | blowfish_cbc |
+     <code>block_cipher() = aes_cbc | aes_cfb8 | aes_cfb128 | aes_ige256 | blowfish_cbc |
      blowfish_cfb64 | des_cbc | des_cfb | des3_cbc | des3_cfb | des_ede3 | rc2_cbc </code>
 
-     <code>aead_cipher() =  aes_gcm | chacha20_poly1305 </code>
+     <code>aead_cipher() = aes_gcm | chacha20_poly1305 </code>
 
-     <code>stream_key() =  aes_key() | rc4_key() </code>
+     <code>stream_key() = aes_key() | rc4_key() </code>
 
-     <code>block_key() =  aes_key() |  blowfish_key() | des_key()| des3_key() </code>
+     <code>block_key() = aes_key() |  blowfish_key() | des_key()| des3_key() </code>
 
      <code>aes_key() = iodata() </code> <p>Key length is 128, 192 or 256 bits</p>
 
@@ -174,13 +192,17 @@
      Note that both md4 and md5 are recommended only for compatibility with existing applications.
      </p>
      <code> cipher_algorithms() = aes_cbc | aes_cfb8 | aes_cfb128 | aes_ctr | aes_gcm |
-     aes_ige256 | blowfish_cbc | blowfish_cfb64 | chacha20_poly1305 | des_cbc | des_cfb |
-     des3_cbc | des3_cfb | des_ede3 | rc2_cbc | rc4 </code>
-     <code> mac_algorithms() =   hmac | cmac</code>
-     <code> public_key_algorithms() =   rsa |dss | ecdsa | dh | ecdh | ec_gf2m</code>
+     aes_ige256 | blowfish_cbc | blowfish_cfb64 | chacha20_poly1305 | des_cbc |
+     des_cfb | des3_cbc | des3_cfb | des_ede3 | rc2_cbc | rc4 </code>
+     <code> mac_algorithms() = hmac | cmac</code>
+     <code> public_key_algorithms() = rsa |dss | ecdsa | dh | ecdh | ec_gf2m</code>
      <p>Note that ec_gf2m is not strictly a public key algorithm, but a restriction on what curves are supported
      with ecdsa and ecdh.
      </p>
+     <code>engine_method_type() = engine_method_rsa | engine_method_dsa | engine_method_dh |
+     engine_method_rand | engine_method_ecdh | engine_method_ecdsa |
+     engine_method_ciphers | engine_method_digests | engine_method_store |
+     engine_method_pkey_meths | engine_method_pkey_asn1_meths</code>
 
  </section>
 
@@ -261,13 +283,13 @@
 	is not supported by the underlying OpenSSL implementation.</p>
       </desc>
     </func>
-    
+
      <func>
       <name>bytes_to_integer(Bin) -> Integer </name>
       <fsummary>Convert binary representation, of an integer, to an Erlang integer.</fsummary>
       <type>
 	<v>Bin = binary() - as returned by crypto functions</v>
-	
+
         <v>Integer = integer() </v>
       </type>
       <desc>
@@ -439,7 +461,7 @@
       </type>
       <desc>
         <p>Updates the HMAC represented by <c>Context</c> using the given <c>Data</c>. <c>Context</c>
-        must have been generated using an HMAC init function (such as 
+        must have been generated using an HMAC init function (such as
         <seealso marker="#hmac_init-2">hmac_init</seealso>). <c>Data</c> can be any length. <c>NewContext</c>
         must be passed into the next call to <c>hmac_update</c>
 	or to one of the functions <seealso marker="#hmac_final-1">hmac_final</seealso> and
@@ -580,7 +602,7 @@
       <type>
 	<v>Type = rsa</v>
 	<v>CipherText = binary()</v>
-	<v>PrivateKey = rsa_private()</v>
+	<v>PrivateKey = rsa_private() | engine_key_ref()</v>
 	<v>Padding = rsa_pkcs1_padding | rsa_pkcs1_oaep_padding | rsa_no_padding</v>
         <v>PlainText = binary()</v>
       </type>
@@ -594,7 +616,22 @@
 	</p>
       </desc>
     </func>
-    
+
+    <func>
+      <name>privkey_to_pubkey(Type, EnginePrivateKeyRef) -> PublicKey</name>
+      <fsummary>Fetches a public key from an Engine stored private key.</fsummary>
+      <type>
+	<v>Type = rsa | dss</v>
+	<v>EnginePrivateKeyRef = engine_key_ref()</v>
+	<v>PublicKey =  rsa_public() | dss_public()</v>
+      </type>
+      <desc>
+	<p>Fetches the corresponding public key from a private key stored in an Engine.
+	The key must be of the type indicated by the Type parameter.
+	</p>	
+      </desc>
+    </func>
+
     <func>
       <name>private_encrypt(Type, PlainText, PrivateKey, Padding) -> CipherText</name>
       <fsummary>Encrypts PlainText using the private Key.</fsummary>
@@ -605,7 +642,7 @@
 	than <c>byte_size(N)-11</c> if <c>rsa_pkcs1_padding</c> is
 	used, and <c>byte_size(N)</c> if <c>rsa_no_padding</c> is
 	used, where N is public modulus of the RSA key.</d>
-	<v>PrivateKey = rsa_private()</v>
+	<v>PrivateKey = rsa_private() | engine_key_ref()</v>
 	<v>Padding = rsa_pkcs1_padding | rsa_no_padding</v>
         <v>CipherText = binary()</v>
       </type>
@@ -624,7 +661,7 @@
       <type>
 	<v>Type = rsa</v>
 	<v>CipherText = binary()</v>
-	<v>PublicKey =  rsa_public() </v>
+	<v>PublicKey =  rsa_public() | engine_key_ref()</v>
 	<v>Padding = rsa_pkcs1_padding | rsa_no_padding</v>
         <v>PlainText = binary()</v>
       </type>
@@ -649,7 +686,7 @@
 	than <c>byte_size(N)-11</c> if <c>rsa_pkcs1_padding</c> is
 	used, and <c>byte_size(N)</c> if <c>rsa_no_padding</c> is
 	used, where N is public modulus of the RSA key.</d>
-	<v>PublicKey = rsa_public()</v>
+	<v>PublicKey = rsa_public() | engine_key_ref()</v>
 	<v>Padding = rsa_pkcs1_padding | rsa_pkcs1_oaep_padding | rsa_no_padding</v>
         <v>CipherText = binary()</v>
       </type>
@@ -702,7 +739,7 @@
 	signed or it is the hashed value of "cleartext" i.e. the
 	digest (plaintext).</d>
 	<v>DigestType = rsa_digest_type() | dss_digest_type() | ecdsa_digest_type()</v>
-	<v>Key = rsa_private() | dss_private() | [ecdh_private(),ecdh_params()]</v>
+	<v>Key = rsa_private() | dss_private() | [ecdh_private(),ecdh_params()] | engine_key_ref()</v>
 	<v>Options = sign_options()</v>
       </type>
       <desc>
@@ -1014,7 +1051,7 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
         or it is the hashed value of "cleartext" i.e. the digest (plaintext).</d>
 	<v>DigestType = rsa_digest_type() | dss_digest_type() | ecdsa_digest_type()</v>
 	<v>Signature = binary()</v>
-	<v>Key = rsa_public() | dss_public() | [ecdh_public(),ecdh_params()]</v>
+	<v>Key = rsa_public() | dss_public() | [ecdh_public(),ecdh_params()] | engine_key_ref()</v>
 	<v>Options = sign_options()</v>
       </type>
       <desc>
@@ -1026,6 +1063,175 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
       </desc>
     </func>
 
+    <!-- Engine functions -->
+    <func>
+      <name>engine_get_all_methods() -> Result</name>
+      <fsummary>Return list of all possible engine methods</fsummary>
+      <type>
+	<v>Result = [EngineMethod::atom()]</v>
+      </type>
+      <desc>
+	<p>
+	  Returns a list of all possible engine methods.
+	</p>
+	<p>	  
+	  May throw exception notsup in case there is 
+	  no engine support in the underlying OpenSSL implementation.
+	</p>
+	<p>
+	  See also the chapter <seealso marker="crypto:engine_load#engine_load">Engine Load</seealso>
+	  in the User's Guide.
+	</p>
+      </desc>
+    </func>
+
+    <func>
+      <name>engine_load(EngineId, PreCmds, PostCmds) -> Result</name>
+      <fsummary>Dynamical load an encryption engine</fsummary>
+      <type>
+	<v>EngineId = unicode:chardata()</v>
+	<v>PreCmds, PostCmds = [{unicode:chardata(), unicode:chardata()}]</v>
+	<v>Result = {ok, Engine::term()} | {error, Reason::term()}</v>
+      </type>
+      <desc>
+	<p>
+	  Loads the OpenSSL engine given by <c>EngineId</c> if it is available and then returns ok and
+	  an engine handle. This function is the same as calling <c>engine_load/4</c> with 
+	  <c>EngineMethods</c> set to a list of all the possible methods.  An error tuple is 
+	  returned if the engine can't be loaded.
+	</p>
+	<p>
+	  The function throws a badarg if the parameters are in wrong format.
+	  It may also throw the exception notsup in case there is 
+	  no engine support in the underlying OpenSSL implementation.
+	</p>
+	<p>
+	  See also the chapter <seealso marker="crypto:engine_load#engine_load">Engine Load</seealso>
+	  in the User's Guide.
+	</p>
+      </desc>
+    </func>
+
+    <func>
+      <name>engine_load(EngineId, PreCmds, PostCmds, EngineMethods) -> Result</name>
+      <fsummary>Dynamical load an encryption engine</fsummary>
+      <type>
+	<v>EngineId = unicode:chardata()</v>
+	<v>PreCmds, PostCmds = [{unicode:chardata(), unicode:chardata()}]</v>
+	<v>EngineMethods = [engine_method_type()]</v>
+	<v>Result = {ok, Engine::term()} | {error, Reason::term()}</v>
+      </type>
+      <desc>
+	<p>
+	  Loads the OpenSSL engine given by <c>EngineId</c> if it is available and then returns ok and
+	  an engine handle. An error tuple is returned if the engine can't be loaded.
+	</p>
+	<p>
+	  The function throws a badarg if the parameters are in wrong format.
+	  It may also throw the exception notsup in case there is 
+	  no engine support in the underlying OpenSSL implementation.
+	</p>
+	<p>
+	  See also the chapter <seealso marker="crypto:engine_load#engine_load">Engine Load</seealso>
+	  in the User's Guide.
+	</p>
+      </desc>
+    </func>
+
+    <func>
+      <name>engine_unload(Engine) -> Result</name>
+      <fsummary>Dynamical load an encryption engine</fsummary>
+      <type>
+	<v>Engine = term()</v>
+	<v>Result = ok | {error, Reason::term()}</v>
+      </type>
+      <desc>
+	<p>
+	  Unloads the OpenSSL engine given by <c>EngineId</c>.
+	  An error tuple is returned if the engine can't be unloaded.
+	</p>
+	<p>
+	  The function throws a badarg if the parameter is in wrong format.
+	  It may also throw the exception notsup in case there is 
+	  no engine support in the underlying OpenSSL implementation.
+	</p>
+	<p>
+	  See also the chapter <seealso marker="crypto:engine_load#engine_load">Engine Load</seealso>
+	  in the User's Guide.
+	</p>
+      </desc>
+    </func>
+
+    <func>
+      <name>engine_list() -> Result</name>
+      <fsummary>List the known engine ids</fsummary>
+      <type>
+	<v>Result = [EngineId::unicode:chardata()]</v>
+      </type>
+      <desc>
+	<p>List the id's of all engines in OpenSSL's internal list.</p>
+	<p>
+	  It may also throw the exception notsup in case there is 
+	  no engine support in the underlying OpenSSL implementation.
+	</p>
+	<p>
+	  See also the chapter <seealso marker="crypto:engine_load#engine_load">Engine Load</seealso> 
+	  in the User's Guide.
+	</p>
+      </desc>
+    </func>
+
+    <func>
+      <name>engine_ctrl_cmd_string(Engine, CmdName, CmdArg) -> Result</name>
+      <fsummary>Sends ctrl commands to an OpenSSL engine</fsummary>
+      <type>
+	<v>Engine = term()</v>
+	<v>CmdName = unicode:chardata()</v>
+	<v>CmdArg = unicode:chardata()</v>
+	<v>Result = ok | {error, Reason::term()}</v>
+      </type>
+      <desc>
+	<p>
+	  Sends ctrl commands to the OpenSSL engine given by <c>Engine</c>.
+	  This function is the same as calling <c>engine_ctrl_cmd_string/4</c> with 
+	  <c>Optional</c> set to <c>false</c>.
+	</p>
+	<p>
+	  The function throws a badarg if the parameters are in wrong format.
+	  It may also throw the exception notsup in case there is 
+	  no engine support in the underlying OpenSSL implementation.
+	</p>
+      </desc>
+    </func>
+
+    <func>
+      <name>engine_ctrl_cmd_string(Engine, CmdName, CmdArg, Optional) -> Result</name>
+      <fsummary>Sends ctrl commands to an OpenSSL engine</fsummary>
+      <type>
+	<v>Engine = term()</v>
+	<v>CmdName = unicode:chardata()</v>
+	<v>CmdArg = unicode:chardata()</v>
+	<v>Optional = boolean()</v>
+	<v>Result = ok | {error, Reason::term()}</v>
+      </type>
+      <desc>
+	<p>
+	  Sends ctrl commands to the OpenSSL engine given by <c>Engine</c>.
+	  <c>Optional</c> is a boolean argument that can relax the semantics of the function. 
+	  If set to <c>true</c> it will only return failure if the ENGINE supported the given 
+	  command name but failed while executing it, if the ENGINE doesn't support the command 
+	  name it will simply return success without doing anything. In this case we assume 
+	  the user is only supplying commands specific to the given ENGINE so we set this to
+	  <c>false</c>.
+	</p>
+	<p>
+	  The function throws a badarg if the parameters are in wrong format.
+	  It may also throw the exception notsup in case there is 
+	  no engine support in the underlying OpenSSL implementation.
+	</p>
+      </desc>
+    </func>
+
  </funcs>
 
   <!-- Maybe put this in the users guide -->
@@ -1100,4 +1306,3 @@ _FloatValue = rand:uniform().     % [0.0; 1.0[</pre>
   <!--   </p> -->
   <!-- </section> -->
 </erlref>
-
diff --git a/lib/crypto/doc/src/engine_keys.xml b/lib/crypto/doc/src/engine_keys.xml
new file mode 100644
index 0000000000..38714fed8a
--- /dev/null
+++ b/lib/crypto/doc/src/engine_keys.xml
@@ -0,0 +1,129 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!DOCTYPE chapter SYSTEM "chapter.dtd">
+
+<chapter>
+  <header>
+    <copyright>
+      <year>2017</year><year>2017</year>
+      <holder>Ericsson AB. All Rights Reserved.</holder>
+    </copyright>
+    <legalnotice>
+      The contents of this file are subject to the Erlang Public License,
+      Version 1.1, (the "License"); you may not use this file except in
+      compliance with the License. You should have received a copy of the
+      Erlang Public License along with this software. If not, it can be
+      retrieved online at http://www.erlang.org/.
+
+      Software distributed under the License is distributed on an "AS IS"
+      basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+      the License for the specific language governing rights and limitations
+      under the License.
+    </legalnotice>
+    <title>Engine Stored Keys</title>
+    <prepared>Hans Nilsson</prepared>
+    <date>2017-11-10</date>
+    <file>engine_keys.xml</file>
+  </header>
+  <p>
+    <marker id="engine_key"></marker>
+    This chapter describes the support in the crypto application for using public and private keys stored in encryption engines.
+  </p>
+
+  <section>
+    <title>Background</title>
+    <p>
+      <url href="https://www.openssl.org/">OpenSSL</url> exposes an Engine API, which makes 
+      it possible to plug in alternative implementations for some of the cryptographic
+      operations implemented by OpenSSL.
+      See the chapter <seealso marker="crypto:engine_load#engine_load">Engine Load</seealso>
+      for details and how to load an Engine.
+    </p>
+    <p>
+      An engine could among other tasks provide a storage for
+      private or public keys. Such a storage could be made safer than the normal file system. Thoose techniques are not 
+      described in this User's Guide.  Here we concentrate on how to use private or public keys stored in
+      such an engine.
+    </p>
+    <p>
+      The storage engine must call <c>ENGINE_set_load_privkey_function</c> and <c>ENGINE_set_load_pubkey_function</c>.
+      See the OpenSSL cryptolib's <url href="https://www.openssl.org/docs/manpages.html">manpages</url>.
+    </p>
+    <p>
+      OTP/Crypto requires that the user provides two or three items of information about the key. The application used
+      by the user is usually on a higher level, for example in
+      <seealso marker="ssl:ssl#key_option_def">SSL</seealso>. If using
+      the crypto application directly, it is required that:
+    </p>
+    <list>
+      <item>an Engine is loaded, see the chapter on <seealso marker="crypto:engine_load#engine_load">Engine Load</seealso>
+      or the <seealso marker="crypto:crypto#engine_load-3">Reference Manual</seealso>
+      </item>
+      <item>a reference to a key in the Engine is available. This should be an Erlang string or binary and depends
+      on the Engine loaded
+      </item>
+      <item>an Erlang map is constructed with the Engine reference, the key reference and possibly a key passphrase if
+      needed by the Engine. See the <seealso marker="crypto:crypto#engine_key_ref_type">Reference Manual</seealso> for
+      details of the map.
+      </item>
+    </list>
+  </section>
+
+  <section>
+    <title>Use Cases</title>
+    <section>
+      <title>Sign with an engine stored private key</title>
+      <p>
+	This example shows how to construct a key reference that is used in a sign operation.
+	The actual key is stored in the engine that is loaded at prompt 1.
+      </p>
+      <code>
+1> {ok, EngineRef} = crypto:engine_load(....).
+...
+{ok,#Ref&lt;0.2399045421.3028942852.173962>}
+2> PrivKey = #{engine => EngineRef,
+               key_id => "id of the private key in Engine"}.
+...
+3> Signature = crypto:sign(rsa, sha, &lt;&lt;"The message">>, PrivKey).
+&lt;&lt;65,6,125,254,54,233,84,77,83,63,168,28,169,214,121,76,
+  207,177,124,183,156,185,160,243,36,79,125,230,231,...>>
+      </code>
+    </section>
+
+    <section>
+      <title>Verify with an engine stored public key</title>
+      <p>
+	Here the signature and message in the last example is verifyed using the public key.
+	The public key is stored in an engine, only to exemplify that it is possible. The public
+	key could of course be handled openly as usual.
+      </p>
+      <code>
+4> PublicKey = #{engine => EngineRef,
+                 key_id => "id of the public key in Engine"}.
+...
+5> crypto:verify(rsa, sha, &lt;&lt;"The message">>, Signature, PublicKey).
+true
+6> 
+      </code>
+    </section>
+
+    <section>
+      <title>Using a password protected private key</title>
+      <p>
+	The same example as the first sign example, except that a password protects the key down in the Engine.
+      </p>
+      <code>
+6> PrivKeyPwd = #{engine => EngineRef,
+                  key_id => "id of the pwd protected private key in Engine",
+		  password => "password"}.
+...
+7> crypto:sign(rsa, sha, &lt;&lt;"The message">>, PrivKeyPwd).
+&lt;&lt;140,80,168,101,234,211,146,183,231,190,160,82,85,163,
+  175,106,77,241,141,120,72,149,181,181,194,154,175,76,
+  223,...>>
+8> 
+      </code>
+
+    </section>
+
+  </section>
+</chapter>
diff --git a/lib/crypto/doc/src/engine_load.xml b/lib/crypto/doc/src/engine_load.xml
new file mode 100644
index 0000000000..e5c3f5d561
--- /dev/null
+++ b/lib/crypto/doc/src/engine_load.xml
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!DOCTYPE chapter SYSTEM "chapter.dtd">
+
+<chapter>
+  <header>
+    <copyright>
+      <year>2017</year><year>2017</year>
+      <holder>Ericsson AB. All Rights Reserved.</holder>
+    </copyright>
+    <legalnotice>
+      The contents of this file are subject to the Erlang Public License,
+      Version 1.1, (the "License"); you may not use this file except in
+      compliance with the License. You should have received a copy of the
+      Erlang Public License along with this software. If not, it can be
+      retrieved online at http://www.erlang.org/.
+
+      Software distributed under the License is distributed on an "AS IS"
+      basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+      the License for the specific language governing rights and limitations
+      under the License.
+    </legalnotice>
+    <title>Engine Load</title>
+    <prepared>Lars Thorsén</prepared>
+    <date>2017-08-22</date>
+    <file>engine_load.xml</file>
+  </header>
+  <p>
+    <marker id="engine_load"></marker>
+    This chapter describes the support for loading encryption engines in the crypto application.
+  </p>
+
+  <section>
+    <title>Background</title>
+    <p>
+      OpenSSL exposes an Engine API, which makes it possible to plug in alternative
+      implementations for some or all of the cryptographic operations implemented by OpenSSL.
+      When configured appropriately, OpenSSL calls the engine's implementation of these
+      operations instead of its own.
+    </p>
+    <p>
+      Typically, OpenSSL engines provide a hardware implementation of specific cryptographic
+      operations. The hardware implementation usually offers improved performance over its
+      software-based counterpart, which is known as cryptographic acceleration.
+    </p>
+  </section>
+
+  <section>
+    <title>Use Cases</title>
+    <section>
+      <title>Dynamically load an engine from default directory</title>
+      <p>
+	If the engine is located in the OpenSSL/LibreSSL installation <c>engines</c> directory.
+      </p>
+      <code>
+1> {ok, Engine} = crypto:engine_load(&lt;&lt;"otp_test_engine">>, [], []).
+ {ok, #Ref}</code>
+       <note>
+	<p>The file name requirement on the engine dynamic library can differ between SSL versions.</p>
+      </note>
+    </section>
+
+    <section>
+      <title>Load an engine with the dynamic engine</title>
+      <p>
+	Load an engine with the help of the dynamic engine by giving the path to the library.
+      </p>
+      <code>
+ 2> {ok, Engine} = crypto:engine_load(&lt;&lt;"dynamic">>,
+                                      [{&lt;&lt;"SO_PATH">>,
+                                        &lt;&lt;"/some/path/otp_test_engine.so">>},
+                                       {&lt;&lt;"ID">>, &lt;&lt;"MD5">>},
+                                       &lt;&lt;"LOAD">>],
+                                      []).
+ {ok, #Ref}</code>
+      <note>
+	<p>The dynamic engine is not supported in LibreSSL from version 2.2.1</p>
+      </note>
+    </section>
+
+    <section>
+      <title>Load an engine and replace some methods</title>
+      <p>
+	Load an engine with the help of the dynamic engine and just
+	replace some engine methods.
+      </p>
+      <code>
+ 3> Methods = crypto:engine_get_all_methods() -- [engine_method_dh,engine_method_rand,
+engine_method_ciphers,engine_method_digests, engine_method_store,
+engine_method_pkey_meths, engine_method_pkey_asn1_meths].
+[engine_method_rsa,engine_method_dsa,
+ engine_method_ecdh,engine_method_ecdsa]
+ 4> {ok, Engine} = crypto:engine_load(&lt;&lt;"dynamic">>,
+                                      [{&lt;&lt;"SO_PATH">>,
+                                        &lt;&lt;"/some/path/otp_test_engine.so">>},
+                                       {&lt;&lt;"ID">>, &lt;&lt;"MD5">>},
+                                       &lt;&lt;"LOAD">>],
+                                      [],
+		                      Methods).
+ {ok, #Ref}</code>
+    </section>
+
+    <section>
+      <title>List all engines currently loaded</title>
+      <code>
+ 5> crypto:engine_list().
+[&lt;&lt;"dynamic">>, &lt;&lt;"MD5">>]</code>
+    </section>
+
+  </section>
+</chapter>
diff --git a/lib/crypto/doc/src/fascicules.xml b/lib/crypto/doc/src/fascicules.xml
deleted file mode 100644
index cbc266cd30..0000000000
--- a/lib/crypto/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="usersguide" href="usersguide_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="release_notes" href="release_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/crypto/doc/src/note.gif b/lib/crypto/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/crypto/doc/src/note.gif
+++ /dev/null
diff --git a/lib/crypto/doc/src/notes.xml b/lib/crypto/doc/src/notes.xml
index 9376e6f649..dbeb886d7b 100644
--- a/lib/crypto/doc/src/notes.xml
+++ b/lib/crypto/doc/src/notes.xml
@@ -31,6 +31,76 @@
   </header>
   <p>This document describes the changes made to the Crypto application.</p>
 
+<section><title>Crypto 4.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    The compatibility function <c>void HMAC_CTX_free</c> in
+	    <c>crypto.c</c> erroneously tried to return a value.</p>
+          <p>
+	    Own Id: OTP-14720</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Rewrite public and private key encode/decode with EVP
+	    api. New RSA padding options added. This is a modified
+	    half of PR-838.</p>
+          <p>
+	    Own Id: OTP-14446</p>
+        </item>
+        <item>
+          <p>
+	    The crypto API is extended to use private/public keys
+	    stored in an Engine for sign/verify or encrypt/decrypt
+	    operations.</p>
+          <p>
+	    The ssl application provides an API to use this new
+	    engine concept in TLS.</p>
+          <p>
+	    Own Id: OTP-14448</p>
+        </item>
+        <item>
+	    <p> Add support to plug in alternative implementations
+	    for some or all of the cryptographic operations supported
+	    by the OpenSSL Engine API. When configured appropriately,
+	    OpenSSL calls the engine's implementation of these
+	    operations instead of its own. </p>
+          <p>
+	    Own Id: OTP-14567</p>
+        </item>
+        <item>
+          <p>
+	    Replaced a call of the OpenSSL deprecated function
+	    <c>DH_generate_parameters</c> in <c>crypto.c</c>.</p>
+          <p>
+	    Own Id: OTP-14639</p>
+        </item>
+        <item>
+          <p>
+	    Documentation added about how to use keys stored in an
+	    Engine.</p>
+          <p>
+	    Own Id: OTP-14735 Aux Id: OTP-14448 </p>
+        </item>
+        <item>
+	    <p> Add engine_ ctrl_cmd_string/3,4 the OpenSSL Engine
+	    support in crypto. </p>
+          <p>
+	    Own Id: OTP-14801</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Crypto 4.1</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/crypto/doc/src/usersguide.xml b/lib/crypto/doc/src/usersguide.xml
index 7971aefff4..e2ba1fe160 100644
--- a/lib/crypto/doc/src/usersguide.xml
+++ b/lib/crypto/doc/src/usersguide.xml
@@ -11,7 +11,7 @@
       Licensed under the Apache License, Version 2.0 (the "License");
       you may not use this file except in compliance with the License.
       You may obtain a copy of the License at
- 
+
           http://www.apache.org/licenses/LICENSE-2.0
 
       Unless required by applicable law or agreed to in writing, software
@@ -19,7 +19,7 @@
       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
       See the License for the specific language governing permissions and
       limitations under the License.
-    
+
     </legalnotice>
 
     <title>Crypto User's Guide</title>
@@ -48,5 +48,6 @@
   </description>
   <xi:include href="licenses.xml"/>
   <xi:include href="fips.xml"/>
+  <xi:include href="engine_load.xml"/>
+  <xi:include href="engine_keys.xml"/>
 </part>
-
diff --git a/lib/crypto/doc/src/warning.gif b/lib/crypto/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/crypto/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/crypto/src/Makefile b/lib/crypto/src/Makefile
index aea8a5a71c..edad0e6b61 100644
--- a/lib/crypto/src/Makefile
+++ b/lib/crypto/src/Makefile
@@ -39,8 +39,7 @@ MODULES= \
 	crypto \
 	crypto_ec_curves
 
-HRL_FILES= 
-
+HRL_FILES=
 ERL_FILES= $(MODULES:%=%.erl)
 
 TARGET_FILES= $(MODULES:%=$(EBIN)/%.$(EMULATOR))
@@ -56,16 +55,16 @@ APPUP_TARGET= $(EBIN)/$(APPUP_FILE)
 # ----------------------------------------------------
 # FLAGS
 # ----------------------------------------------------
-ERL_COMPILE_FLAGS += -DCRYPTO_VSN=\"$(VSN)\" -Werror
+ERL_COMPILE_FLAGS += -DCRYPTO_VSN=\"$(VSN)\" -Werror -I../include
 
 # ----------------------------------------------------
 # Targets
 # ----------------------------------------------------
 
-debug opt valgrind: $(TARGET_FILES) $(APP_TARGET) $(APPUP_TARGET) 
+debug opt valgrind: $(TARGET_FILES) $(APP_TARGET) $(APPUP_TARGET)
 
 clean:
-	rm -f $(TARGET_FILES) $(APP_TARGET) $(APPUP_TARGET) 
+	rm -f $(TARGET_FILES) $(APP_TARGET) $(APPUP_TARGET)
 	rm -f errs core *~
 
 $(APP_TARGET): $(APP_SRC) ../vsn.mk
@@ -78,7 +77,7 @@ docs:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_spec: opt
@@ -89,10 +88,3 @@ release_spec: opt
 		$(APPUP_TARGET) "$(RELSYSDIR)/ebin"
 
 release_docs_spec:
-
-
-
-
-
-
-
diff --git a/lib/crypto/src/crypto.erl b/lib/crypto/src/crypto.erl
index 6b4f3a256d..df259d5419 100644
--- a/lib/crypto/src/crypto.erl
+++ b/lib/crypto/src/crypto.erl
@@ -43,12 +43,28 @@
 -export([public_encrypt/4, private_decrypt/4]).
 -export([private_encrypt/4, public_decrypt/4]).
 -export([dh_generate_parameters/2, dh_check/1]). %% Testing see
+-export([privkey_to_pubkey/2]).
 -export([ec_curve/1, ec_curves/0]).
 -export([rand_seed/1]).
+%% Engine
+-export([
+         engine_get_all_methods/0,
+         engine_load/3,
+         engine_load/4,
+         engine_unload/1,
+         engine_list/0,
+         engine_ctrl_cmd_string/3,
+         engine_ctrl_cmd_string/4
+        ]).
+
+-export_type([engine_ref/0,
+              key_id/0,
+              password/0
+             ]).
 
-%% Private. For tests.
--export([packed_openssl_version/4]).
 
+%% Private. For tests.
+-export([packed_openssl_version/4, engine_methods_convert_to_bitmask/2, get_test_engine/0]).
 
 -deprecated({rand_uniform, 2, next_major_release}).
 
@@ -460,13 +476,24 @@ sign(Algorithm, Type, Data, Key, Options) ->
     end.
 
 
+
+-type key_id()   :: string() | binary() .
+-type password() :: string() | binary() .
+
+-type engine_key_ref() :: #{engine :=   engine_ref(),
+                            key_id :=   key_id(),
+                            password => password(),
+                            term() => term() 
+                           }.
+
 -type pk_algs() :: rsa | ecdsa | dss .
--type pk_opt() :: list() | rsa_padding() .
+-type pk_key()  :: engine_key_ref() | [integer() | binary()] .
+-type pk_opt()  :: list() | rsa_padding() .
 
--spec public_encrypt(pk_algs(),  binary(), [binary()],             pk_opt()) -> binary().
--spec public_decrypt(pk_algs(),  binary(), [integer() | binary()], pk_opt()) -> binary().
--spec private_encrypt(pk_algs(), binary(), [integer() | binary()], pk_opt()) -> binary().
--spec private_decrypt(pk_algs(), binary(), [integer() | binary()], pk_opt()) -> binary().
+-spec public_encrypt(pk_algs(),  binary(), pk_key(), pk_opt()) -> binary().
+-spec public_decrypt(pk_algs(),  binary(), pk_key(), pk_opt()) -> binary().
+-spec private_encrypt(pk_algs(), binary(), pk_key(), pk_opt()) -> binary().
+-spec private_decrypt(pk_algs(), binary(), pk_key(), pk_opt()) -> binary().
 
 public_encrypt(Algorithm, In, Key, Options) when is_list(Options) ->
     case pkey_crypt_nif(Algorithm, In, format_pkey(Algorithm, Key), Options, false, true) of
@@ -607,10 +634,174 @@ compute_key(ecdh, Others, My, Curve) ->
 			 nif_curve_params(Curve),
 			 ensure_int_as_bin(My)).
 
+%%======================================================================
+%% Engine functions
+%%======================================================================
+%%----------------------------------------------------------------------
+%% Function: engine_get_all_methods/0
+%%----------------------------------------------------------------------
+-type engine_method_type() :: engine_method_rsa | engine_method_dsa | engine_method_dh |
+                              engine_method_rand | engine_method_ecdh | engine_method_ecdsa |
+                              engine_method_ciphers | engine_method_digests | engine_method_store |
+                              engine_method_pkey_meths | engine_method_pkey_asn1_meths | 
+                              engine_method_ec.
+
+-type engine_ref() :: term().
+
+-spec engine_get_all_methods() ->
+    [engine_method_type()].
+engine_get_all_methods() ->
+     notsup_to_error(engine_get_all_methods_nif()).
+
+%%----------------------------------------------------------------------
+%% Function: engine_load/3
+%%----------------------------------------------------------------------
+-spec engine_load(EngineId::unicode:chardata(),
+                  PreCmds::[{unicode:chardata(), unicode:chardata()}],
+                  PostCmds::[{unicode:chardata(), unicode:chardata()}]) ->
+    {ok, Engine::engine_ref()} | {error, Reason::term()}.
+engine_load(EngineId, PreCmds, PostCmds) when is_list(PreCmds), is_list(PostCmds) ->
+    engine_load(EngineId, PreCmds, PostCmds, engine_get_all_methods()).
+
+%%----------------------------------------------------------------------
+%% Function: engine_load/4
+%%----------------------------------------------------------------------
+-spec engine_load(EngineId::unicode:chardata(),
+                  PreCmds::[{unicode:chardata(), unicode:chardata()}],
+                  PostCmds::[{unicode:chardata(), unicode:chardata()}],
+                  EngineMethods::[engine_method_type()]) ->
+    {ok, Engine::term()} | {error, Reason::term()}.
+engine_load(EngineId, PreCmds, PostCmds, EngineMethods) when is_list(PreCmds),
+                                                             is_list(PostCmds) ->
+    try
+        ok = notsup_to_error(engine_load_dynamic_nif()),
+        case notsup_to_error(engine_by_id_nif(ensure_bin_chardata(EngineId))) of
+            {ok, Engine} ->
+                ok = engine_load_1(Engine, PreCmds, PostCmds, EngineMethods),
+                {ok, Engine};
+            {error, Error1} ->
+                {error, Error1}
+        end
+    catch
+       throw:Error2 ->
+          Error2
+    end.
+
+engine_load_1(Engine, PreCmds, PostCmds, EngineMethods) ->
+    try
+        ok = engine_nif_wrapper(engine_ctrl_cmd_strings_nif(Engine, ensure_bin_cmds(PreCmds), 0)),
+        ok = engine_nif_wrapper(engine_add_nif(Engine)),
+        ok = engine_nif_wrapper(engine_init_nif(Engine)),
+        engine_load_2(Engine, PostCmds, EngineMethods),
+        ok
+    catch
+       throw:Error ->
+          %% The engine couldn't initialise, release the structural reference
+          ok = engine_free_nif(Engine),
+          throw(Error)
+    end.
+
+engine_load_2(Engine, PostCmds, EngineMethods) ->
+    try
+        ok = engine_nif_wrapper(engine_ctrl_cmd_strings_nif(Engine, ensure_bin_cmds(PostCmds), 0)),
+        [ok = engine_nif_wrapper(engine_register_nif(Engine, engine_method_atom_to_int(Method))) ||
+            Method <- EngineMethods],
+        ok
+    catch
+       throw:Error ->
+          %% The engine registration failed, release the functional reference
+          ok = engine_finish_nif(Engine),
+          throw(Error)
+    end.
+
+%%----------------------------------------------------------------------
+%% Function: engine_unload/1
+%%----------------------------------------------------------------------
+-spec engine_unload(Engine::term()) ->
+    ok | {error, Reason::term()}.
+engine_unload(Engine) ->
+    engine_unload(Engine, engine_get_all_methods()).
+
+-spec engine_unload(Engine::term(), EngineMethods::[engine_method_type()]) ->
+    ok | {error, Reason::term()}.
+engine_unload(Engine, EngineMethods) ->
+    try
+        [ok = engine_nif_wrapper(engine_unregister_nif(Engine, engine_method_atom_to_int(Method))) ||
+            Method <- EngineMethods],
+        ok = engine_nif_wrapper(engine_remove_nif(Engine)),
+        %% Release the functional reference from engine_init_nif
+        ok = engine_nif_wrapper(engine_finish_nif(Engine)),
+        %% Release the structural reference from engine_by_id_nif
+        ok = engine_nif_wrapper(engine_free_nif(Engine))
+    catch
+       throw:Error ->
+          Error
+    end.
+
+%%----------------------------------------------------------------------
+%% Function: engine_list/0
+%%----------------------------------------------------------------------
+-spec engine_list() ->
+    [EngineId::binary()].
+engine_list() ->
+    case notsup_to_error(engine_get_first_nif()) of
+        {ok, <<>>} ->
+            [];
+        {ok, Engine} ->
+            case notsup_to_error(engine_get_id_nif(Engine)) of
+                {ok, <<>>} ->
+                    engine_list(Engine, []);
+                {ok, EngineId} ->
+                    engine_list(Engine, [EngineId])
+            end
+    end.
+
+engine_list(Engine0, IdList) ->
+    case notsup_to_error(engine_get_next_nif(Engine0)) of
+        {ok, <<>>} ->
+            lists:reverse(IdList);
+        {ok, Engine1} ->
+            case notsup_to_error(engine_get_id_nif(Engine1)) of
+                {ok, <<>>} ->
+                    engine_list(Engine1, IdList);
+                {ok, EngineId} ->
+                    engine_list(Engine1, [EngineId |IdList])
+            end
+    end.
+
+%%----------------------------------------------------------------------
+%% Function: engine_ctrl_cmd_string/3
+%%----------------------------------------------------------------------
+-spec engine_ctrl_cmd_string(Engine::term(),
+                      CmdName::unicode:chardata(), 
+                      CmdArg::unicode:chardata()) ->
+    ok | {error, Reason::term()}.
+engine_ctrl_cmd_string(Engine, CmdName, CmdArg) ->
+    engine_ctrl_cmd_string(Engine, CmdName, CmdArg, false).
+
+%%----------------------------------------------------------------------
+%% Function: engine_ctrl_cmd_string/4
+%%----------------------------------------------------------------------
+-spec engine_ctrl_cmd_string(Engine::term(),
+                      CmdName::unicode:chardata(), 
+                      CmdArg::unicode:chardata(),
+                      Optional::boolean()) ->
+    ok | {error, Reason::term()}.
+engine_ctrl_cmd_string(Engine, CmdName, CmdArg, Optional) ->
+    case engine_ctrl_cmd_strings_nif(Engine, 
+                                     ensure_bin_cmds([{CmdName, CmdArg}]), 
+                                     bool_to_int(Optional)) of
+        ok ->
+            ok;
+        notsup ->
+            erlang:error(notsup);
+        {error, Error} ->
+            {error, Error}
+    end.
+
 %%--------------------------------------------------------------------
 %%% On load
 %%--------------------------------------------------------------------
-
 on_load() ->
     LibBaseName = "crypto",
     PrivDir = code:priv_dir(crypto),
@@ -670,12 +861,12 @@ path2bin(Path) when is_list(Path) ->
     end.
 
 %%--------------------------------------------------------------------
-%%% Internal functions 
+%%% Internal functions
 %%--------------------------------------------------------------------
 max_bytes() ->
     ?MAX_BYTES_TO_NIF.
 
-notsup_to_error(notsup) ->
+notsup_to_error(notsup) -> 
     erlang:error(notsup);
 notsup_to_error(Other) ->
     Other.
@@ -799,7 +990,7 @@ do_stream_decrypt({rc4, State0}, Data) ->
 
 
 %%
-%% AES - in counter mode (CTR) with state maintained for multi-call streaming 
+%% AES - in counter mode (CTR) with state maintained for multi-call streaming
 %%
 -type ctr_state() :: { iodata(), binary(), binary(), integer() } | binary().
 
@@ -808,11 +999,11 @@ do_stream_decrypt({rc4, State0}, Data) ->
 				 { ctr_state(), binary() }.
 -spec aes_ctr_stream_decrypt(ctr_state(), binary()) ->
 				 { ctr_state(), binary() }.
- 
+
 aes_ctr_stream_init(_Key, _IVec) -> ?nif_stub.
 aes_ctr_stream_encrypt(_State, _Data) -> ?nif_stub.
 aes_ctr_stream_decrypt(_State, _Cipher) -> ?nif_stub.
-     
+
 %%
 %% RC4 - symmetric stream cipher
 %%
@@ -897,22 +1088,22 @@ pkey_verify_nif(_Algorithm, _Type, _Data, _Signature, _Key, _Options) -> ?nif_st
 rsa_generate_key_nif(_Bits, _Exp) -> ?nif_stub.
 
 %% DH Diffie-Hellman functions
-%% 
+%%
 
 %% Generate (and check) Parameters is not documented because they are implemented
 %% for testing (and offline parameter generation) only.
-%% From the openssl doc: 
+%% From the openssl doc:
 %%  DH_generate_parameters() may run for several hours before finding a suitable prime.
-%% Thus dh_generate_parameters may in this implementation block 
+%% Thus dh_generate_parameters may in this implementation block
 %% the emulator for several hours.
 %%
-%% usage: dh_generate_parameters(1024, 2 or 5) -> 
+%% usage: dh_generate_parameters(1024, 2 or 5) ->
 %%    [Prime=mpint(), SharedGenerator=mpint()]
 dh_generate_parameters(PrimeLen, Generator) ->
     case dh_generate_parameters_nif(PrimeLen, Generator) of
 	error -> erlang:error(generation_failed, [PrimeLen,Generator]);
 	Ret -> Ret
-    end.  
+    end.
 
 dh_generate_parameters_nif(_PrimeLen, _Generator) -> ?nif_stub.
 
@@ -938,6 +1129,24 @@ ec_curves() ->
 ec_curve(X) ->
     crypto_ec_curves:curve(X).
 
+
+privkey_to_pubkey(Alg, EngineMap) when Alg == rsa; Alg == dss; Alg == ecdsa ->
+    try privkey_to_pubkey_nif(Alg, format_pkey(Alg,EngineMap))
+    of
+        [_|_]=L -> map_ensure_bin_as_int(L);
+        X -> X
+    catch
+        error:badarg when Alg==ecdsa ->
+            {error, notsup};
+        error:badarg ->
+            {error, not_found};
+        error:notsup ->
+            {error, notsup}
+    end.
+            
+privkey_to_pubkey_nif(_Alg, _EngineMap) -> ?nif_stub.
+
+
 %%
 %% EC
 %%
@@ -1005,6 +1214,19 @@ ensure_int_as_bin(Int) when is_integer(Int) ->
 ensure_int_as_bin(Bin) ->
     Bin.
 
+map_ensure_bin_as_int(List) when is_list(List) ->
+    lists:map(fun ensure_bin_as_int/1, List).
+
+ensure_bin_as_int(Bin) when is_binary(Bin) ->
+    bin_to_int(Bin);
+ensure_bin_as_int(E) ->
+    E.
+
+format_pkey(_Alg, #{engine:=_, key_id:=T}=M) when is_binary(T) -> format_pwd(M);
+format_pkey(_Alg, #{engine:=_, key_id:=T}=M) when is_list(T) -> format_pwd(M#{key_id:=list_to_binary(T)});
+format_pkey(_Alg, #{engine:=_           }=M) -> error({bad_key_id, M});
+format_pkey(_Alg, #{}=M) -> error({bad_engine_map, M});
+%%%
 format_pkey(rsa, Key) ->
     map_ensure_int_as_bin(Key);
 format_pkey(ecdsa, [Key, Curve]) ->
@@ -1014,6 +1236,9 @@ format_pkey(dss, Key) ->
 format_pkey(_, Key) ->
     Key.
 
+format_pwd(#{password := Pwd}=M) when is_list(Pwd) -> M#{password := list_to_binary(Pwd)};
+format_pwd(M) -> M.
+
 %%--------------------------------------------------------------------
 %%
 -type rsa_padding() :: 'rsa_pkcs1_padding' | 'rsa_pkcs1_oaep_padding' | 'rsa_no_padding'.
@@ -1024,7 +1249,7 @@ pkey_crypt_nif(_Algorithm, _In, _Key, _Options, _IsPrivate, _IsEncrypt) -> ?nif_
 %% MP representaion  (SSH2)
 mpint(X) when X < 0 -> mpint_neg(X);
 mpint(X) -> mpint_pos(X).
- 
+
 -define(UINT32(X),   X:32/unsigned-big-integer).
 
 
@@ -1032,7 +1257,7 @@ mpint_neg(X) ->
     Bin = int_to_bin_neg(X, []),
     Sz = byte_size(Bin),
     <<?UINT32(Sz), Bin/binary>>.
-    
+
 mpint_pos(X) ->
     Bin = int_to_bin_pos(X, []),
     <<MSB,_/binary>> = Bin,
@@ -1054,7 +1279,6 @@ erlint(<<MPIntSize:32/integer,MPIntValue/binary>>) ->
 %%
 mod_exp_nif(_Base,_Exp,_Mod,_bin_hdr) -> ?nif_stub.
 
-
 %%%----------------------------------------------------------------
 %% 9470495 == V(0,9,8,zh).
 %% 268435615 == V(1,0,0,i).
@@ -1065,3 +1289,95 @@ packed_openssl_version(MAJ, MIN, FIX, P0) ->
     P1 = atom_to_list(P0),
     P = lists:sum([C-$a||C<-P1]),
     ((((((((MAJ bsl 8) bor MIN) bsl 8 ) bor FIX) bsl 8) bor (P+1)) bsl 4) bor 16#f).
+
+%%--------------------------------------------------------------------
+%% Engine nifs
+engine_by_id_nif(_EngineId) -> ?nif_stub.
+engine_init_nif(_Engine) -> ?nif_stub.
+engine_finish_nif(_Engine) -> ?nif_stub.
+engine_free_nif(_Engine) -> ?nif_stub.
+engine_load_dynamic_nif() -> ?nif_stub.
+engine_ctrl_cmd_strings_nif(_Engine, _Cmds, _Optional) -> ?nif_stub.
+engine_add_nif(_Engine)  -> ?nif_stub.
+engine_remove_nif(_Engine)  -> ?nif_stub.
+engine_register_nif(_Engine, _EngineMethod) -> ?nif_stub.
+engine_unregister_nif(_Engine, _EngineMethod) -> ?nif_stub.
+engine_get_first_nif() -> ?nif_stub.
+engine_get_next_nif(_Engine) -> ?nif_stub.
+engine_get_id_nif(_Engine) -> ?nif_stub.
+engine_get_all_methods_nif() -> ?nif_stub.
+
+%%--------------------------------------------------------------------
+%% Engine internals
+engine_nif_wrapper(ok) ->
+    ok;
+engine_nif_wrapper(notsup) ->
+    erlang:error(notsup);
+engine_nif_wrapper({error, Error}) ->
+    throw({error, Error}).
+
+ensure_bin_chardata(CharData) when is_binary(CharData) ->
+    CharData;
+ensure_bin_chardata(CharData) ->
+    unicode:characters_to_binary(CharData).
+
+ensure_bin_cmds(CMDs) ->
+    ensure_bin_cmds(CMDs, []).
+
+ensure_bin_cmds([], Acc) ->
+    lists:reverse(Acc);
+ensure_bin_cmds([{Key, Value} |CMDs], Acc) ->
+    ensure_bin_cmds(CMDs, [{ensure_bin_chardata(Key), ensure_bin_chardata(Value)} | Acc]);
+ensure_bin_cmds([Key | CMDs], Acc) ->
+    ensure_bin_cmds(CMDs, [{ensure_bin_chardata(Key), <<"">>} | Acc]).
+
+engine_methods_convert_to_bitmask([], BitMask) ->
+    BitMask;
+engine_methods_convert_to_bitmask(engine_method_all, _BitMask) ->
+    16#FFFF;
+engine_methods_convert_to_bitmask(engine_method_none, _BitMask) ->
+    16#0000;
+engine_methods_convert_to_bitmask([M |Ms], BitMask) ->
+    engine_methods_convert_to_bitmask(Ms, BitMask bor engine_method_atom_to_int(M)).
+
+bool_to_int(true) -> 1;
+bool_to_int(false) -> 0.
+
+engine_method_atom_to_int(engine_method_rsa) -> 16#0001;
+engine_method_atom_to_int(engine_method_dsa) -> 16#0002;
+engine_method_atom_to_int(engine_method_dh) -> 16#0004;
+engine_method_atom_to_int(engine_method_rand) -> 16#0008;
+engine_method_atom_to_int(engine_method_ecdh) -> 16#0010;
+engine_method_atom_to_int(engine_method_ecdsa) -> 16#0020;
+engine_method_atom_to_int(engine_method_ciphers) -> 16#0040;
+engine_method_atom_to_int(engine_method_digests) -> 16#0080;
+engine_method_atom_to_int(engine_method_store) -> 16#0100;
+engine_method_atom_to_int(engine_method_pkey_meths) -> 16#0200;
+engine_method_atom_to_int(engine_method_pkey_asn1_meths) -> 16#0400;
+engine_method_atom_to_int(engine_method_ec) -> 16#0800;
+engine_method_atom_to_int(X) ->
+    erlang:error(badarg, [X]).
+
+get_test_engine() ->
+    Type = erlang:system_info(system_architecture),
+    LibDir = filename:join([code:priv_dir(crypto), "lib"]),
+    ArchDir = filename:join([LibDir, Type]),
+    case filelib:is_dir(ArchDir) of        
+	true  -> check_otp_test_engine(ArchDir);
+	false -> check_otp_test_engine(LibDir)
+    end.
+
+check_otp_test_engine(LibDir) ->
+    case filelib:wildcard("otp_test_engine*", LibDir) of
+        [] ->
+            {error, notexist};
+        [LibName] ->
+            LibPath = filename:join(LibDir,LibName),
+            case filelib:is_file(LibPath) of
+                true ->
+                    {ok, unicode:characters_to_binary(LibPath)};
+                false ->
+                    {error, notexist}
+            end
+    end.
+            
diff --git a/lib/crypto/test/Makefile b/lib/crypto/test/Makefile
index 138081d386..e046a25338 100644
--- a/lib/crypto/test/Makefile
+++ b/lib/crypto/test/Makefile
@@ -7,7 +7,8 @@ include $(ERL_TOP)/make/$(TARGET)/otp.mk
 
 MODULES = \
 	blowfish_SUITE \
-	crypto_SUITE
+	crypto_SUITE \
+	engine_SUITE
 
 ERL_FILES= $(MODULES:%=%.erl)
 
@@ -27,7 +28,7 @@ RELSYSDIR = $(RELEASE_PATH)/crypto_test
 # FLAGS
 # ----------------------------------------------------
 ERL_MAKE_FLAGS += 
-ERL_COMPILE_FLAGS +=
+ERL_COMPILE_FLAGS += +nowarn_export_all
 
 EBIN = .
 MAKE_EMAKE = $(wildcard $(ERL_TOP)/make/make_emakefile)
@@ -77,7 +78,7 @@ release_spec:
 release_tests_spec: $(TEST_TARGET)
 	$(INSTALL_DIR) "$(RELSYSDIR)"
 	$(INSTALL_DATA) crypto.spec crypto.cover $(RELTEST_FILES) "$(RELSYSDIR)"
-	@tar cfh - crypto_SUITE_data | (cd "$(RELSYSDIR)"; tar xf -)
+	@tar cfh - *_SUITE_data | (cd "$(RELSYSDIR)"; tar xf -)
 	chmod -R u+w "$(RELSYSDIR)"
 
 release_docs_spec:
diff --git a/lib/crypto/test/crypto_SUITE.erl b/lib/crypto/test/crypto_SUITE.erl
index 69f02d3da6..6dab459df6 100644
--- a/lib/crypto/test/crypto_SUITE.erl
+++ b/lib/crypto/test/crypto_SUITE.erl
@@ -198,7 +198,7 @@ init_per_suite(Config) ->
 		    %% This is NOT how you want to do seeding, it is just here
 		    %% to make the tests pass. Check your OS manual for how you
 		    %% really want to seed.
-		    {H,M,L} = erlang:now(),
+		    {H,M,L} = erlang:timestamp(),
 		    Bin = <<H:24,M:20,L:20>>,
 		    crypto:rand_seed(<< <<Bin/binary>> || _ <- lists:seq(1,16) >>),
 		    Config
diff --git a/lib/crypto/test/engine_SUITE.erl b/lib/crypto/test/engine_SUITE.erl
new file mode 100644
index 0000000000..f206f967c7
--- /dev/null
+++ b/lib/crypto/test/engine_SUITE.erl
@@ -0,0 +1,660 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017-2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+
+-module(engine_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+
+%% Note: This directive should only be used in test suites.
+-compile(export_all).
+
+%%--------------------------------------------------------------------
+%% Common Test interface functions -----------------------------------
+%%--------------------------------------------------------------------
+suite() ->
+    [{ct_hooks,[ts_install_cth]},
+     {timetrap,{seconds, 10}}
+    ].
+
+all() ->
+    [
+     get_all_possible_methods,
+     engine_load_all_methods,
+     engine_load_some_methods,
+     bad_arguments,
+     unknown_engine,
+     pre_command_fail_bad_value,
+     pre_command_fail_bad_key,
+     failed_engine_init,
+     ctrl_cmd_string,
+     ctrl_cmd_string_optional,
+     {group, engine_stored_key}
+    ].
+
+groups() ->
+    [{engine_stored_key, [],
+      [sign_verify_rsa,
+       sign_verify_dsa,
+       sign_verify_ecdsa,
+       sign_verify_rsa_pwd,
+       sign_verify_rsa_pwd_bad_pwd,
+       priv_encrypt_pub_decrypt_rsa,
+       priv_encrypt_pub_decrypt_rsa_pwd,
+       pub_encrypt_priv_decrypt_rsa,
+       pub_encrypt_priv_decrypt_rsa_pwd,
+       get_pub_from_priv_key_rsa,
+       get_pub_from_priv_key_rsa_pwd,
+       get_pub_from_priv_key_rsa_pwd_no_pwd,
+       get_pub_from_priv_key_rsa_pwd_bad_pwd,
+       get_pub_from_priv_key_dsa,
+       get_pub_from_priv_key_ecdsa
+      ]}].
+
+
+init_per_suite(Config) ->
+    try crypto:start() of
+	ok ->
+            Config;
+        {error,{already_started,crypto}} ->
+            Config
+    catch _:_ ->
+	    {skip, "Crypto did not start"}
+    end.
+end_per_suite(_Config) ->
+    ok.
+
+%%--------------------------------------------------------------------
+init_per_group(engine_stored_key, Config) ->
+    case load_storage_engine(Config) of
+        {ok, E} ->
+            KeyDir = key_dir(Config),
+            [{storage_engine,E}, {storage_dir,KeyDir} | Config];
+        {error, notexist} ->
+            {skip, "OTP Test engine not found"};
+        {error, notsup} ->
+            {skip, "Engine not supported on this OpenSSL version"};
+        {error, bad_engine_id} ->
+            {skip, "Dynamic Engine not supported"};
+        Other ->
+            ct:log("Engine load failed: ~p",[Other]),
+            {fail, "Engine load failed"}
+    end;
+init_per_group(_Group, Config0) ->
+    Config0.
+
+end_per_group(engine_stored_key, Config) ->
+    case proplists:get_value(storage_engine, Config) of
+        undefined ->
+            ok;
+        E ->
+            ok = crypto:engine_unload(E)
+    end;
+end_per_group(_, _) ->
+    ok.
+
+%%--------------------------------------------------------------------
+init_per_testcase(_Case, Config) ->
+    Config.
+end_per_testcase(_Case, _Config) ->
+    ok.
+
+%%-------------------------------------------------------------------------
+%% Test cases starts here.
+%%-------------------------------------------------------------------------
+get_all_possible_methods() ->
+    [{doc, "Just fetch all possible engine methods supported."}].
+
+get_all_possible_methods(Config) when is_list(Config) ->
+    try
+        List = crypto:engine_get_all_methods(),
+        ct:log("crypto:engine_get_all_methods() -> ~p\n", [List]),
+        ok
+    catch
+        error:notsup ->
+            {skip, "Engine not supported on this OpenSSL version"}
+    end.
+
+engine_load_all_methods()->
+    [{doc, "Use a dummy md5 engine that does not implement md5"
+      "but rather returns a static binary to test that crypto:engine_load "
+      "functions works."}].
+
+engine_load_all_methods(Config) when is_list(Config) ->
+    case crypto:get_test_engine() of
+        {error, notexist} ->
+            {skip, "OTP Test engine not found"};
+        {ok, Engine} ->
+            try 
+                Md5Hash1 =  <<106,30,3,246,166,222,229,158,244,217,241,179,50,232,107,109>>,
+                Md5Hash1 = crypto:hash(md5, "Don't panic"),
+                Md5Hash2 =  <<0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15>>,
+                case crypto:engine_load(<<"dynamic">>,
+                                        [{<<"SO_PATH">>, Engine},
+                                         {<<"ID">>, <<"MD5">>},
+                                         <<"LOAD">>],
+                                        []) of
+                    {ok, E} ->
+                        case crypto:hash(md5, "Don't panic") of
+                            Md5Hash1 ->
+                                ct:fail(fail_to_load_still_original_engine);
+                            Md5Hash2 ->
+                                ok;
+                            _ ->
+                                ct:fail(fail_to_load_engine)
+                        end,
+                        ok = crypto:engine_unload(E),
+                        case crypto:hash(md5, "Don't panic") of
+                            Md5Hash2 ->
+                                ct:fail(fail_to_unload_still_test_engine);
+                            Md5Hash1 ->
+                                ok;
+                            _ ->
+                                ct:fail(fail_to_unload_engine)
+                        end;
+                    {error, bad_engine_id} ->
+                        {skip, "Dynamic Engine not supported"}
+                end
+           catch
+               error:notsup ->
+                  {skip, "Engine not supported on this OpenSSL version"}
+           end
+    end.
+
+engine_load_some_methods()->
+    [{doc, "Use a dummy md5 engine that does not implement md5"
+      "but rather returns a static binary to test that crypto:engine_load "
+      "functions works."}].
+
+engine_load_some_methods(Config) when is_list(Config) ->
+    case crypto:get_test_engine() of
+        {error, notexist} ->
+            {skip, "OTP Test engine not found"};
+        {ok, Engine} ->
+            try 
+                Md5Hash1 =  <<106,30,3,246,166,222,229,158,244,217,241,179,50,232,107,109>>,
+                Md5Hash1 = crypto:hash(md5, "Don't panic"),
+                Md5Hash2 =  <<0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15>>,
+                EngineMethods = crypto:engine_get_all_methods() --
+                    [engine_method_dh,engine_method_rand,
+                     engine_method_ciphers, engine_method_store,
+                     engine_method_pkey_meths, engine_method_pkey_asn1_meths],
+                case crypto:engine_load(<<"dynamic">>,
+                                        [{<<"SO_PATH">>, Engine},
+                                         {<<"ID">>, <<"MD5">>},
+                                         <<"LOAD">>],
+                                        [],
+                                        EngineMethods) of
+                    {ok, E} ->        
+                        case crypto:hash(md5, "Don't panic") of
+                            Md5Hash1 ->
+                                ct:fail(fail_to_load_engine_still_original);
+                            Md5Hash2 ->
+                                ok;
+                            _ ->
+                                ct:fail(fail_to_load_engine)
+                        end,
+                        ok = crypto:engine_unload(E),
+                        case crypto:hash(md5, "Don't panic") of
+                            Md5Hash2 ->
+                                ct:fail(fail_to_unload_still_test_engine);
+                            Md5Hash1 ->
+                                ok;
+                            _ ->
+                                ct:fail(fail_to_unload_engine)
+                        end;
+                    {error, bad_engine_id} ->
+                    {skip, "Dynamic Engine not supported"}
+                end
+           catch
+               error:notsup ->
+                  {skip, "Engine not supported on this OpenSSL version"}
+           end
+    end.
+
+%%-------------------------------------------------------------------------
+%% Error cases
+bad_arguments()->
+    [{doc, "Test different arguments in bad format."}].
+
+bad_arguments(Config) when is_list(Config) ->
+    case crypto:get_test_engine() of
+        {error, notexist} ->
+            {skip, "OTP Test engine not found"};
+        {ok, Engine} ->
+            try 
+                try
+                    crypto:engine_load(fail_engine, [], [])
+                catch
+                    error:badarg ->
+                       ok
+                end,
+                try
+                    crypto:engine_load(<<"dynamic">>,
+                                       [{<<"SO_PATH">>, Engine},
+                                        1,
+                                        {<<"ID">>, <<"MD5">>},
+                                        <<"LOAD">>],
+                                       [])
+                catch
+                    error:badarg ->
+                       ok
+                end,
+                try
+                    crypto:engine_load(<<"dynamic">>,
+                                       [{<<"SO_PATH">>, Engine},
+                                        {'ID', <<"MD5">>},
+                                        <<"LOAD">>],
+                                       [])
+                catch
+                    error:badarg ->
+                       ok
+                end
+          catch
+              error:notsup ->
+                 {skip, "Engine not supported on this OpenSSL version"}
+          end
+    end.
+
+unknown_engine() ->
+    [{doc, "Try to load a non existent engine."}].
+
+unknown_engine(Config) when is_list(Config) ->
+    try
+        {error, bad_engine_id} = crypto:engine_load(<<"fail_engine">>, [], []),
+        ok
+    catch
+        error:notsup ->
+           {skip, "Engine not supported on this OpenSSL version"}
+    end.
+
+pre_command_fail_bad_value() ->
+    [{doc, "Test pre command due to bad value"}].
+
+pre_command_fail_bad_value(Config) when is_list(Config) ->
+    DataDir = unicode:characters_to_binary(code:priv_dir(crypto)),
+    try
+        case crypto:engine_load(<<"dynamic">>,
+                                [{<<"SO_PATH">>,
+                                  <<DataDir/binary, <<"/libfail_engine.so">>/binary >>},
+                                 {<<"ID">>, <<"MD5">>},
+                                 <<"LOAD">>],
+                                []) of
+            {error, ctrl_cmd_failed} ->
+                ok;
+            {error, bad_engine_id} ->
+                {skip, "Dynamic Engine not supported"}
+        end
+    catch
+        error:notsup ->
+           {skip, "Engine not supported on this OpenSSL version"}
+    end.
+
+pre_command_fail_bad_key() ->
+    [{doc, "Test pre command due to bad key"}].
+
+pre_command_fail_bad_key(Config) when is_list(Config) ->
+    try
+        case crypto:get_test_engine() of
+            {error, notexist} ->
+                {skip, "OTP Test engine not found"};
+            {ok, Engine} ->
+                case crypto:engine_load(<<"dynamic">>,
+                                        [{<<"SO_WRONG_PATH">>, Engine},
+                                         {<<"ID">>, <<"MD5">>},
+                                         <<"LOAD">>],
+                                        []) of
+                    {error, ctrl_cmd_failed} ->
+                        ok;
+                    {error, bad_engine_id} ->
+                        {skip, "Dynamic Engine not supported"}
+                end
+        end
+   catch 
+       error:notsup ->
+          {skip, "Engine not supported on this OpenSSL version"}
+   end.
+
+failed_engine_init()->
+    [{doc, "Test failing engine init due to missed pre command"}].
+
+failed_engine_init(Config) when is_list(Config) ->
+    try
+        case crypto:get_test_engine() of
+            {error, notexist} ->
+                {skip, "OTP Test engine not found"};
+            {ok, Engine} ->
+                case crypto:engine_load(<<"dynamic">>,
+                                        [{<<"SO_PATH">>, Engine},
+                                         {<<"ID">>, <<"MD5">>}],
+                                        []) of
+                    {error, add_engine_failed} ->
+                        ok;
+                    {error, bad_engine_id} ->
+                        {skip, "Dynamic Engine not supported"}
+                end
+        end
+   catch 
+       error:notsup ->
+          {skip, "Engine not supported on this OpenSSL version"}
+   end.
+
+
+ctrl_cmd_string()->
+    [{doc, "Test that a not known optional ctrl comand do not fail"}].
+ctrl_cmd_string(Config) when is_list(Config) ->
+    try
+        case crypto:get_test_engine() of
+            {error, notexist} ->
+                {skip, "OTP Test engine not found"};
+            {ok, Engine} ->
+                case crypto:engine_load(<<"dynamic">>,
+                                        [{<<"SO_PATH">>, Engine},
+                                         {<<"ID">>, <<"MD5">>},
+                                         <<"LOAD">>],
+                                        []) of
+                    {ok, E} ->        
+                        case crypto:engine_ctrl_cmd_string(E, <<"TEST">>, <<"17">>) of
+                            ok ->
+                                ct:fail(fail_ctrl_cmd_should_fail);
+                            {error,ctrl_cmd_failed} -> 
+                                ok
+                        end,
+                        ok = crypto:engine_unload(E);              
+                    {error, bad_engine_id} ->
+                        {skip, "Dynamic Engine not supported"}
+                end
+        end
+   catch 
+       error:notsup ->
+          {skip, "Engine not supported on this OpenSSL version"}
+   end.        
+
+ctrl_cmd_string_optional()->
+    [{doc, "Test that a not known optional ctrl comand do not fail"}].
+ctrl_cmd_string_optional(Config) when is_list(Config) ->
+    try
+        case crypto:get_test_engine() of
+            {error, notexist} ->
+                {skip, "OTP Test engine not found"};
+            {ok, Engine} ->
+                case crypto:engine_load(<<"dynamic">>,
+                                        [{<<"SO_PATH">>, Engine},
+                                         {<<"ID">>, <<"MD5">>},
+                                         <<"LOAD">>],
+                                        []) of
+                    {ok, E} ->        
+                        case crypto:engine_ctrl_cmd_string(E, <<"TEST">>, <<"17">>, true) of
+                            ok ->
+                                ok;
+                            _ -> 
+                                ct:fail(fail_ctrl_cmd_string)
+                        end,
+                        ok = crypto:engine_unload(E);              
+                    {error, bad_engine_id} ->
+                        {skip, "Dynamic Engine not supported"}
+                end
+        end
+   catch 
+       error:notsup ->
+          {skip, "Engine not supported on this OpenSSL version"}
+   end.        
+
+%%%----------------------------------------------------------------
+%%% Pub/priv key storage tests.  Thoose are for testing the crypto.erl
+%%% support for using priv/pub keys stored in an engine.
+
+sign_verify_rsa(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_private_key.pem")},
+    Pub  = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_public_key.pem")},
+    sign_verify(rsa, sha, Priv, Pub).
+
+sign_verify_dsa(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "dsa_private_key.pem")},
+    Pub  = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "dsa_public_key.pem")},
+    sign_verify(dss, sha, Priv, Pub).
+
+sign_verify_ecdsa(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "ecdsa_private_key.pem")},
+    Pub  = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "ecdsa_public_key.pem")},
+    sign_verify(ecdsa, sha, Priv, Pub).
+
+sign_verify_rsa_pwd(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_private_key_pwd.pem"),
+             password => "password"},
+    Pub  = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_public_key_pwd.pem")},
+    sign_verify(rsa, sha, Priv, Pub).
+
+sign_verify_rsa_pwd_bad_pwd(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_private_key_pwd.pem"),
+             password => "Bad password"},
+    Pub  = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_public_key_pwd.pem")},
+    try sign_verify(rsa, sha, Priv, Pub) of
+        _ -> {fail, "PWD prot pubkey sign succeded with no pwd!"}
+    catch
+        error:badarg -> ok
+    end.  
+
+priv_encrypt_pub_decrypt_rsa(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_private_key.pem")},
+    Pub  = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_public_key.pem")},
+    priv_enc_pub_dec(rsa, Priv, Pub,  rsa_pkcs1_padding).
+
+priv_encrypt_pub_decrypt_rsa_pwd(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_private_key_pwd.pem"),
+             password => "password"},
+    Pub  = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_public_key_pwd.pem")},
+    priv_enc_pub_dec(rsa, Priv, Pub,  rsa_pkcs1_padding).
+
+pub_encrypt_priv_decrypt_rsa(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_private_key.pem")},
+    Pub  = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_public_key.pem")},
+    pub_enc_priv_dec(rsa, Pub, Priv,  rsa_pkcs1_padding).
+
+pub_encrypt_priv_decrypt_rsa_pwd(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_private_key_pwd.pem"),
+             password => "password"},
+    Pub  = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_public_key_pwd.pem")},
+    pub_enc_priv_dec(rsa, Pub, Priv,  rsa_pkcs1_padding).
+
+get_pub_from_priv_key_rsa(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_private_key.pem")},
+    case crypto:privkey_to_pubkey(rsa, Priv) of
+        {error, not_found} ->
+            {fail, "Key not found"};
+        {error, notsup} ->
+            {skip, "RSA not supported"};
+        {error, Error} ->
+            {fail, {wrong_error,Error}};
+        Pub ->
+            ct:log("rsa Pub = ~p",[Pub]),
+            sign_verify(rsa, sha, Priv, Pub)
+    end.
+
+get_pub_from_priv_key_rsa_pwd(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_private_key_pwd.pem"),
+             password => "password"},
+    case crypto:privkey_to_pubkey(rsa, Priv) of
+        {error, not_found} ->
+            {fail, "Key not found"};
+        {error, notsup} ->
+            {skip, "RSA not supported"};
+        {error, Error} ->
+            {fail, {wrong_error,Error}};
+        Pub ->
+            ct:log("rsa Pub = ~p",[Pub]),
+            sign_verify(rsa, sha, Priv, Pub)
+    end.
+
+get_pub_from_priv_key_rsa_pwd_no_pwd(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_private_key_pwd.pem")},
+    case crypto:privkey_to_pubkey(rsa, Priv) of
+        {error, not_found} ->
+            ok;
+        {error, notsup} ->
+            {skip, "RSA not supported"};
+        {error, Error} ->
+            {fail, {wrong_error,Error}};
+        Pub -> 
+            ct:log("rsa Pub = ~p",[Pub]),
+            {fail, "PWD prot pubkey fetch succeded although no pwd!"}
+    end.
+
+get_pub_from_priv_key_rsa_pwd_bad_pwd(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "rsa_private_key_pwd.pem"),
+             password => "Bad password"},
+    case crypto:privkey_to_pubkey(rsa, Priv) of
+        {error, not_found} ->
+            ok;
+        {error, notsup} ->
+            {skip, "RSA not supported"};
+        {error, Error} ->
+            {fail, {wrong_error,Error}};
+        Pub -> 
+            ct:log("rsa Pub = ~p",[Pub]),
+            {fail, "PWD prot pubkey fetch succeded with bad pwd!"}
+    end.
+
+get_pub_from_priv_key_dsa(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "dsa_private_key.pem")},
+    case crypto:privkey_to_pubkey(dss, Priv) of
+        {error, not_found} ->
+            {fail, "Key not found"};
+        {error, notsup} ->
+            {skip, "DSA not supported"};
+        {error, Error} ->
+            {fail, {wrong_error,Error}};
+        Pub ->
+            ct:log("dsa Pub = ~p",[Pub]),
+            sign_verify(dss, sha, Priv, Pub)
+    end.
+
+get_pub_from_priv_key_ecdsa(Config) ->
+    Priv = #{engine => engine_ref(Config),
+             key_id => key_id(Config, "ecdsa_private_key.pem")},
+    case crypto:privkey_to_pubkey(ecdsa, Priv) of
+        {error, not_found} ->
+            {fail, "Key not found"};
+        {error, notsup} ->
+            {skip, "ECDSA not supported"};
+        {error, Error} ->
+            {fail, {wrong_error,Error}};
+        Pub ->
+            ct:log("ecdsa Pub = ~p",[Pub]),
+            sign_verify(ecdsa, sha, Priv, Pub)
+    end.
+    
+%%%================================================================
+%%% Help for engine_stored_pub_priv_keys* test cases
+%%%
+load_storage_engine(_Config) ->
+    case crypto:get_test_engine() of
+        {ok, Engine} ->
+            try crypto:engine_load(<<"dynamic">>,
+                                   [{<<"SO_PATH">>, Engine},
+                                    <<"LOAD">>],
+                                   [])
+            catch
+                error:notsup ->
+                    {error, notsup}
+            end;
+
+        {error, Error} ->
+            {error, Error}
+    end.
+
+
+key_dir(Config) ->
+    DataDir = unicode:characters_to_binary(proplists:get_value(data_dir, Config)),
+    filename:join(DataDir, "pkcs8").
+
+
+engine_ref(Config) ->
+    proplists:get_value(storage_engine, Config).
+
+key_id(Config, File) ->
+    filename:join(proplists:get_value(storage_dir,Config), File).
+
+pubkey_alg_supported(Alg) ->
+    lists:member(Alg,
+                 proplists:get_value(public_keys, crypto:supports())).
+
+
+pub_enc_priv_dec(Alg, KeyEnc, KeyDec, Padding) ->
+    case pubkey_alg_supported(Alg) of
+        true ->
+            PlainText = <<"Hej på dig">>,
+            CryptoText = crypto:public_encrypt(Alg, PlainText, KeyEnc, Padding),
+            case crypto:private_decrypt(Alg, CryptoText, KeyDec, Padding) of
+                PlainText -> ok;
+                _ -> {fail, "Encrypt-decrypt error"}
+            end;
+        false ->
+            {skip, lists:concat([Alg," is not supported by cryptolib"])}
+    end.
+
+priv_enc_pub_dec(Alg, KeyEnc, KeyDec, Padding) ->
+    case pubkey_alg_supported(Alg) of
+        true ->
+            PlainText = <<"Hej på dig">>,
+            CryptoText = crypto:private_encrypt(Alg, PlainText, KeyEnc, Padding),
+            case crypto:public_decrypt(Alg, CryptoText, KeyDec, Padding) of
+                PlainText -> ok;
+                _ -> {fail, "Encrypt-decrypt error"}
+            end;
+        false ->
+            {skip, lists:concat([Alg," is not supported by cryptolib"])}
+    end.
+
+sign_verify(Alg, Sha, KeySign, KeyVerify) ->
+    case pubkey_alg_supported(Alg) of
+        true ->
+            PlainText = <<"Hej på dig">>,
+            Signature = crypto:sign(Alg, Sha, PlainText, KeySign),
+            case crypto:verify(Alg, Sha, PlainText, Signature, KeyVerify) of
+                true -> ok;
+                _ -> {fail, "Sign-verify error"}
+            end;
+        false ->
+            {skip, lists:concat([Alg," is not supported by cryptolib"])}
+    end.
diff --git a/lib/crypto/test/engine_SUITE_data/pkcs8/dsa_private_key.pem b/lib/crypto/test/engine_SUITE_data/pkcs8/dsa_private_key.pem
new file mode 100644
index 0000000000..778ffac675
--- /dev/null
+++ b/lib/crypto/test/engine_SUITE_data/pkcs8/dsa_private_key.pem
@@ -0,0 +1,9 @@
+-----BEGIN PRIVATE KEY-----
+MIIBSwIBADCCASwGByqGSM44BAEwggEfAoGBAMyitTMR7vPbpqyAXJpqnB0AhFwQ
+F87IE+JKFl5bD/MSkhhRV5sM73HUU1ooXY0FjhZ+cdLUCATuZR5ta4ydANqWIcAB
+gX3IwF1B4zf5SXEKTWkUYneL9dOKtiZLtoG28swrk8xMxwX+0fLHkltCEj6FiTW9
+PFrv8GmIfV6DjcI9AhUAqXWbb3RtoN9Ld28fVMhGZrj3LJUCgYEAwnxGHGBMpJaF
+2w7zAw3jHjL8PMYlV6vnufGHQlwF0ZUXJxRsvagMb/X1qACTu2VPYEVoLQGM3cfH
+EhHoQmvSXGAyTfR7Bmn3gf1n/s/DcFbdZduUCZ/rAyIrfd0eSbc1I+kZk85UCsKK
+w/IYdlqcuYa4Cgm2TapT5uEMqH4jhzEEFgIULh8swEUWmU8aJNWsrWl4eCiuUUg=
+-----END PRIVATE KEY-----
diff --git a/lib/crypto/test/engine_SUITE_data/pkcs8/dsa_public_key.pem b/lib/crypto/test/engine_SUITE_data/pkcs8/dsa_public_key.pem
new file mode 100644
index 0000000000..0fa5428828
--- /dev/null
+++ b/lib/crypto/test/engine_SUITE_data/pkcs8/dsa_public_key.pem
@@ -0,0 +1,12 @@
+-----BEGIN PUBLIC KEY-----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+-----END PUBLIC KEY-----
diff --git a/lib/crypto/test/engine_SUITE_data/pkcs8/ecdsa_private_key.pem b/lib/crypto/test/engine_SUITE_data/pkcs8/ecdsa_private_key.pem
new file mode 100644
index 0000000000..a45522064f
--- /dev/null
+++ b/lib/crypto/test/engine_SUITE_data/pkcs8/ecdsa_private_key.pem
@@ -0,0 +1,8 @@
+-----BEGIN PRIVATE KEY-----
+MIHuAgEAMBAGByqGSM49AgEGBSuBBAAjBIHWMIHTAgEBBEIBparGjr0KcdNrVM2J
+G0mW5ltP1QyvxDqBMyWLWo3fruRZv6Qoohl5skd1u4O+KJoM/UrrSTOXI/MDR7NN
+i1yl7O+hgYkDgYYABAG8K2XVsK0ahG9+HIIPwCO0pJY8ulwSTXwIjkCGyB2lpglh
+8qJmRzuyGcfRTslv8wfv0sPlT9H9PKDvgrTUL7rvQQDdOODNgVPXSecUoXoPn+X+
+eqxs77bjx+A5x0t/i3m5PfkaNPh5MZ1H/bWuOOdj2ZXZw0R4rlVc0zVrgnPU8L8S
+BQ==
+-----END PRIVATE KEY-----
diff --git a/lib/crypto/test/engine_SUITE_data/pkcs8/ecdsa_public_key.pem b/lib/crypto/test/engine_SUITE_data/pkcs8/ecdsa_public_key.pem
new file mode 100644
index 0000000000..6d22fe43fe
--- /dev/null
+++ b/lib/crypto/test/engine_SUITE_data/pkcs8/ecdsa_public_key.pem
@@ -0,0 +1,6 @@
+-----BEGIN PUBLIC KEY-----
+MIGbMBAGByqGSM49AgEGBSuBBAAjA4GGAAQBvCtl1bCtGoRvfhyCD8AjtKSWPLpc
+Ek18CI5AhsgdpaYJYfKiZkc7shnH0U7Jb/MH79LD5U/R/Tyg74K01C+670EA3Tjg
+zYFT10nnFKF6D5/l/nqsbO+248fgOcdLf4t5uT35GjT4eTGdR/21rjjnY9mV2cNE
+eK5VXNM1a4Jz1PC/EgU=
+-----END PUBLIC KEY-----
diff --git a/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_private_key.pem b/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_private_key.pem
new file mode 100644
index 0000000000..ea0e3d3958
--- /dev/null
+++ b/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_private_key.pem
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_private_key_pwd.pem b/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_private_key_pwd.pem
new file mode 100644
index 0000000000..501662fc35
--- /dev/null
+++ b/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_private_key_pwd.pem
@@ -0,0 +1,30 @@
+-----BEGIN ENCRYPTED PRIVATE KEY-----
+MIIFDjBABgkqhkiG9w0BBQ0wMzAbBgkqhkiG9w0BBQwwDgQIh888Iq6gxuMCAggA
+MBQGCCqGSIb3DQMHBAic/11YZ8Nt5gSCBMjG/Jb4qiMoBS50iQvHXqcETPE+0NBr
+jhsn9w94LkdRBstMPAsoKmY98Er96Rnde/NfmqlU9CupKTkd7Ce5poBf72Y6KMED
+cPURyjbGRFsu6x9skXB2obhyKYEqAEF2oQAg4Qbe5v1qXBIgDuC/NgiJnM+w2zCZ
+LkHSZB2/NmcnvDzcgPF7TM8pTO23xCJ33m37qjfWvHsgocVqZmL9wQ4+wr/NMYjJ
+pJvX1OHW1vBsZsXh40WchalYRSB1VeO368QfsE8coRJztqbMzdce9EQdMB6Q6jlO
+cetd3moLIoMP4I7HW0/SgokbycTbRiYSvRyU1TGc2WbW6BrFZV24IckcnnVUFatf
+6HKUcaYLG68dJcRgs5QMGkcmgVvlddENHFmHZlo0eym/xSiUl/AT8/5odscm6ML8
+wW5sneax+TF4J2eYmiN7yjAUCodXVTNYNDVKo6uUhntlymbM0o4UitVIbPIfTDHl
+sxJAEZ7vpuPqeNMxUk6G6zipuEjqsVbnuFSBSZmgKiGYcifRPUmqqINa3DdS4WVx
+xaPWdHbHVRD//ze3h/FsA+1lIE5q2kUE0xXseJA1ISog++kJp14XeaaL2j/tx3Ob
+OsbcaOAD/IUw/ItDt9kn0qzfnar7sS0Wov8AmJQxHmH7Lm93jHTLM05yE0AR/eBr
+Mig2ZdC+9OqVC+GPuBkRjSs8NpltQIDroz6EV9IMwPwXm0szSYoyoPLmlHJUdnLs
+ZUef+au6hYkEJBrvuisagnq5eT/fCV3hsjD7yODebNU2CmBTo6X2PRx/xsBHRMWl
+QkoM9PBdSCnKv6HpHl4pchuoqU2NpFjN0BCaad6aHfZSTnqgzK4bEh1oO6dI8/rB
+/eh71JyFFG5J4xbpaqz5Su01V1iwU5leK5bDwqals4M4+ZGHGciou7qnXUmX2fJl
+r6DlMUa/xy+A2ZG0NuZR05yk2oB3+KVNMgp6zFty3XaxwoNtc8GTLtLnBnIh2rlP
+mE1+I65LRWwrNQalPeOAUrYuEzhyp2Df7a8Ykas5PUH7MGR/S0Ge/dLxtE2bJuK4
+znbLAsGhvo/SbNxYqIp6D4iDtd3va6yUGncy41paA/vTKFVvXZDrXcwJQYYCVOGT
+OwdzNuozU8Dc7oxsd8oakfC46kvmVaOrGvZbm56PFfprcaL/Hslska5xxEni/eZe
+WRxZbCBhAVqS1pn5zkDQVUe9uFlR/x39Qi01HIlKLBsjpSs6qQsFArMe8hgXmXLG
+xP+dyVuOE18NzSewdEjeqSRKIM7Qi8EOjZsI4HdSRBY7bh9VhmaVXDZiCSf33TTE
+3y8nimzQAeuGoYg6WqHmWWC2Qnpki2HlaIH/ayXEyQWkP/qvg61e8ovdg9Fy8JOO
+0AacXVt5zj0q00AW5bKx7usi4NIjZedi86hUm6H19aBm7r86BKjwYTEI/GOcdrbV
+9HC/8ayOimgwiAG3gq+aLioWym+Z6KnsbVd7XReVbvM/InQx54WA2y5im0A+/c67
+oQFFPV84XGX9waeqv/K4Wzkm6HW+qVAEM67482VGOf0PVrlQMno6dOotT/Y7ljoZ
+2iz0LmN9yylJnLPDrr1i6gzbs5OhhUgbF5LI2YP2wWdCZTl/DrKSIvQZWl8U+tw3
+ciA=
+-----END ENCRYPTED PRIVATE KEY-----
diff --git a/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_public_key.pem b/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_public_key.pem
new file mode 100644
index 0000000000..d3fb5a2cc9
--- /dev/null
+++ b/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_public_key.pem
@@ -0,0 +1,9 @@
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsMG9P3XVxl0xSuBS8V3V
+emv1iTEqDz0ueUb2SABxbIk7bzy2yfC8Q7GesElWSzdP1EOMHVp/Y37co1OfyMQV
+RvFzrSopkzL5t/2Ts1S7nhhwW6y2LHEb/aC/ObpUyh1oK2Q7tJQV+SSUyL+VEwhK
+8yUUG5GvQxtRmgYA29T5V35MwVjMH7AWZsKAu+yrwnCBgoG1v1wmNN0z9t04PHa7
+6QcjErXXT9hUOH2fdahVMz7vLoWRLKkkExZZoYBhMe3S5ZMtMb7utkbgA0U6SDaX
+FmbVgx03bLDqruudy8MKgWPJQaKQmf+AH/EEd2WJEIXp9WCxG1YXl0bsyC0gmSIi
+TQIDAQAB
+-----END PUBLIC KEY-----
diff --git a/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_public_key_pwd.pem b/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_public_key_pwd.pem
new file mode 100644
index 0000000000..f74361cead
--- /dev/null
+++ b/lib/crypto/test/engine_SUITE_data/pkcs8/rsa_public_key_pwd.pem
@@ -0,0 +1,9 @@
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxquo1Na8C+kjeW0YESGm
+vE1bgNW9xh+SQjU1fv/97ePK8mQW2zO1h/vUNz23pfZAKjQu3rlFW/VgGJQ0LgCs
+8Gr/HbMwNcCJzuFMePUrnWn/qBeR7OKUZCJ3E1pp4kwsTdGDDO7jPtNzKf0bdKlg
+G2GHfZWhUediRX8NsRg12X1odVPuRGVRsyJ952YODk9PFjK7pro7Ynf3Icx7di9d
+PXL5vEcKSRdomXvt1rgM8XVHES94RQqoz60ZhfV2JnPfa9V8qu0KaGntpEr7p4rQ
+5BSiLFPjPOArjsD5tKyo8ldKCdQjLfisEp7AetfMjLPVVPw9o/SmCjDxsYWTVRQ2
+tQIDAQAB
+-----END PUBLIC KEY-----
diff --git a/lib/crypto/vsn.mk b/lib/crypto/vsn.mk
index 1dceebb4e4..da3915a4fc 100644
--- a/lib/crypto/vsn.mk
+++ b/lib/crypto/vsn.mk
@@ -1 +1 @@
-CRYPTO_VSN = 4.1
+CRYPTO_VSN = 4.2
diff --git a/lib/debugger/doc/src/Makefile b/lib/debugger/doc/src/Makefile
index 0f724b6f17..cc0b8861d3 100644
--- a/lib/debugger/doc/src/Makefile
+++ b/lib/debugger/doc/src/Makefile
@@ -41,7 +41,7 @@ XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = debugger.xml i.xml int.xml
 
 XML_PART_FILES = part.xml
-XML_CHAPTER_FILES = debugger_chapter.xml notes.xml
+XML_CHAPTER_FILES = introduction.xml debugger_chapter.xml notes.xml
 
 BOOK_FILES = book.xml
 
diff --git a/lib/debugger/doc/src/fascicules.xml b/lib/debugger/doc/src/fascicules.xml
deleted file mode 100644
index 154c8a3b6d..0000000000
--- a/lib/debugger/doc/src/fascicules.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-</fascicules>
-
diff --git a/lib/debugger/doc/src/notes.xml b/lib/debugger/doc/src/notes.xml
index 21fe7d449d..e71746e30d 100644
--- a/lib/debugger/doc/src/notes.xml
+++ b/lib/debugger/doc/src/notes.xml
@@ -33,6 +33,21 @@
   <p>This document describes the changes made to the Debugger
     application.</p>
 
+<section><title>Debugger 4.2.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Do not quote variables and button names in Debugger
+	    windows. The bug was introduced in Erlang/OTP 20.1. </p>
+          <p>
+	    Own Id: OTP-14802</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Debugger 4.2.3</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/debugger/src/dbg_wx_win.erl b/lib/debugger/src/dbg_wx_win.erl
index 9f59915476..f1298154ab 100644
--- a/lib/debugger/src/dbg_wx_win.erl
+++ b/lib/debugger/src/dbg_wx_win.erl
@@ -299,7 +299,7 @@ open_help(_Parent, HelpHtmlFile) ->
 %%--------------------------------------------------------------------
     
 to_string(Atom) when is_atom(Atom) ->
-    io_lib:format("~tw", [Atom]);
+    atom_to_list(Atom);
 to_string(Integer) when is_integer(Integer) ->
     integer_to_list(Integer);
 to_string([]) -> "";
diff --git a/lib/debugger/test/guard_SUITE.erl b/lib/debugger/test/guard_SUITE.erl
index f7874f79df..e781ea932f 100644
--- a/lib/debugger/test/guard_SUITE.erl
+++ b/lib/debugger/test/guard_SUITE.erl
@@ -390,7 +390,7 @@ all_types() ->
      {atom, xxxx},
      {ref, make_ref()},
      {pid, self()},
-     {port, open_port({spawn, efile}, [])},
+     {port, make_port()},
      {function, fun(X) -> X+1, "" end},
      {binary, list_to_binary([])}].
 
@@ -435,6 +435,9 @@ type_test(binary, X) when binary(X) ->
 type_test(function, X) when function(X) ->
     function.
 
+make_port() ->
+    hd(erlang:ports()).
+
 const_guard(Config) when is_list(Config) ->
     if
 	(0 == 0) and ((0 == 0) or (0 == 0)) ->
diff --git a/lib/debugger/vsn.mk b/lib/debugger/vsn.mk
index 72cedb2240..57da7e5618 100644
--- a/lib/debugger/vsn.mk
+++ b/lib/debugger/vsn.mk
@@ -1 +1 @@
-DEBUGGER_VSN = 4.2.3
+DEBUGGER_VSN = 4.2.4
diff --git a/lib/dialyzer/doc/src/Makefile b/lib/dialyzer/doc/src/Makefile
index 8fe6cd30eb..3463b589e6 100644
--- a/lib/dialyzer/doc/src/Makefile
+++ b/lib/dialyzer/doc/src/Makefile
@@ -9,11 +9,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # The Initial Developer of the Original Code is Ericsson Utvecklings AB.
 # Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
 # AB. All Rights Reserved.''
-# 
+#
 
 include $(ERL_TOP)/make/target.mk
 include $(ERL_TOP)/make/$(TARGET)/otp.mk
@@ -36,7 +36,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
 XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = dialyzer.xml typer.xml
 
-XML_PART_FILES = part.xml part_notes.xml
+XML_PART_FILES = part.xml
 XML_CHAPTER_FILES = dialyzer_chapter.xml notes.xml
 
 BOOK_FILES = book.xml
@@ -65,9 +65,9 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -85,19 +85,19 @@ html: gifs $(HTML_REF_MAN_FILE)
 
 man: $(MAN3_FILES)
 
-gifs: $(GIF_FILES:%=$(HTMLDIR)/%) 
+gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
 	rm -f $(MAN3DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/dialyzer/doc/src/fascicules.xml b/lib/dialyzer/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/dialyzer/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/dialyzer/doc/src/note.gif b/lib/dialyzer/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/dialyzer/doc/src/note.gif
+++ /dev/null
diff --git a/lib/dialyzer/doc/src/notes.xml b/lib/dialyzer/doc/src/notes.xml
index 6a6e65cb94..a1eecfb3fe 100644
--- a/lib/dialyzer/doc/src/notes.xml
+++ b/lib/dialyzer/doc/src/notes.xml
@@ -32,6 +32,29 @@
   <p>This document describes the changes made to the Dialyzer
     application.</p>
 
+<section><title>Dialyzer 3.2.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> The error message returned from Dialyzer when, for
+	    example, a modified record field type is not a subtype of
+	    the declared type, no longer includes a call stack. The
+	    bug was introduced in Erlang/OTP 19.3. </p>
+          <p>
+	    Own Id: OTP-14742</p>
+        </item>
+        <item>
+	    <p> A bug relating to maps and never returning functions
+	    has been fixed. </p>
+          <p>
+	    Own Id: OTP-14743</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Dialyzer 3.2.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/dialyzer/doc/src/part_notes.xml b/lib/dialyzer/doc/src/part_notes.xml
deleted file mode 100644
index 4a0a0af2d1..0000000000
--- a/lib/dialyzer/doc/src/part_notes.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2006</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Dialyzer Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-    <file>part_notes.xml</file>
-  </header>
-  <description>
-    <p><em>Dialyzer</em> is a static analysis tool that identifies software discrepancies such as type errors, unreachable code, unnecessary tests, etc in single Erlang modules or entire (sets of) applications.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/dialyzer/doc/src/warning.gif b/lib/dialyzer/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/dialyzer/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/dialyzer/src/dialyzer_analysis_callgraph.erl b/lib/dialyzer/src/dialyzer_analysis_callgraph.erl
index a4b42c9367..9993c68fed 100644
--- a/lib/dialyzer/src/dialyzer_analysis_callgraph.erl
+++ b/lib/dialyzer/src/dialyzer_analysis_callgraph.erl
@@ -165,7 +165,11 @@ analysis_start(Parent, Analysis, LegalWarnings) ->
 
 remote_type_postprocessing(TmpCServer, Args) ->
   Fun = fun() ->
-            exit(remote_type_postproc(TmpCServer, Args))
+            exit(try remote_type_postproc(TmpCServer, Args) of
+                     R -> R
+                 catch
+                   throw:{error,_}=Error -> Error
+                 end)
         end,
   {Pid, Ref} = erlang:spawn_monitor(Fun),
   dialyzer_codeserver:give_away(TmpCServer, Pid),
diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl
index 8367432ac5..93cfea3c5e 100644
--- a/lib/dialyzer/src/dialyzer_dataflow.erl
+++ b/lib/dialyzer/src/dialyzer_dataflow.erl
@@ -299,6 +299,7 @@ traverse(Tree, Map, State) ->
 	  match_fail -> t_none();
 	  raise -> t_none();
 	  bs_init_writable -> t_from_term(<<>>);
+          build_stacktrace -> t_list();
 	  Other -> erlang:error({'Unsupported primop', Other})
 	end,
       {State, Map, Type};
diff --git a/lib/dialyzer/src/dialyzer_typesig.erl b/lib/dialyzer/src/dialyzer_typesig.erl
index c4d8f45447..b1f6a54503 100644
--- a/lib/dialyzer/src/dialyzer_typesig.erl
+++ b/lib/dialyzer/src/dialyzer_typesig.erl
@@ -41,7 +41,7 @@
 	 t_is_float/1, t_is_fun/1,
 	 t_is_integer/1, t_non_neg_integer/0,
 	 t_is_list/1, t_is_nil/1, t_is_none/1, t_is_number/1,
-	 t_is_singleton/1,
+	 t_is_singleton/1, t_is_none_or_unit/1,
 
          t_limit/2, t_list/0, t_list/1,
 	 t_list_elements/1, t_nonempty_list/1, t_maybe_improper_list/0,
@@ -418,6 +418,7 @@ traverse(Tree, DefinedVars, State) ->
 	match_fail -> throw(error);
 	raise -> throw(error);
 	bs_init_writable -> {State, t_from_term(<<>>)};
+	build_stacktrace -> {State, t_list()};
 	Other -> erlang:error({'Unsupported primop', Other})
       end;
     'receive' ->
@@ -528,13 +529,14 @@ traverse(Tree, DefinedVars, State) ->
 		    false -> t_any();
 		    true ->
 		      MT = t_inf(lookup_type(MapVar, Map), t_map()),
-		      case t_is_none(MT) of
+		      case t_is_none_or_unit(MT) of
 			true -> t_none();
 			false ->
 			  DisjointFromKeyType =
 			    fun(ShadowKey) ->
-				t_is_none(t_inf(lookup_type(ShadowKey, Map),
-						KeyType))
+                                ST = t_inf(lookup_type(ShadowKey, Map),
+                                           KeyType),
+				t_is_none_or_unit(ST)
 			    end,
 			  case lists:all(DisjointFromKeyType, ShadowKeys) of
 			    true -> t_map_get(KeyType, MT);
@@ -567,7 +569,8 @@ traverse(Tree, DefinedVars, State) ->
 			  case cerl:is_literal(OpTree) andalso
 			    cerl:concrete(OpTree) =:= exact of
 			    true ->
-			      case t_is_none(t_inf(ShadowedKeys, KeyType)) of
+                              ST = t_inf(ShadowedKeys, KeyType),
+                              case t_is_none_or_unit(ST) of
 				true ->
 				  t_map_put({KeyType, t_any()}, AccType);
 				false ->
diff --git a/lib/dialyzer/test/map_SUITE_data/results/map_anon_fun b/lib/dialyzer/test/map_SUITE_data/results/map_anon_fun
new file mode 100644
index 0000000000..cfca5b1407
--- /dev/null
+++ b/lib/dialyzer/test/map_SUITE_data/results/map_anon_fun
@@ -0,0 +1,2 @@
+
+map_anon_fun.erl:4: Function g/1 will never be called
diff --git a/lib/dialyzer/test/map_SUITE_data/src/map_anon_fun.erl b/lib/dialyzer/test/map_SUITE_data/src/map_anon_fun.erl
new file mode 100644
index 0000000000..e77016d68a
--- /dev/null
+++ b/lib/dialyzer/test/map_SUITE_data/src/map_anon_fun.erl
@@ -0,0 +1,9 @@
+-module(map_anon_fun).
+
+%% Not exported.
+g(A) ->
+    maps:map(fun F(K, {V, _C}) ->
+                    F(K, V);
+                 F(_K, _V) ->
+                    #{ system => {A} }
+            end, #{}).
diff --git a/lib/dialyzer/test/plt_SUITE.erl b/lib/dialyzer/test/plt_SUITE.erl
index ebe79b2a6d..680f5b5088 100644
--- a/lib/dialyzer/test/plt_SUITE.erl
+++ b/lib/dialyzer/test/plt_SUITE.erl
@@ -9,14 +9,14 @@
 -export([suite/0, all/0, build_plt/1, beam_tests/1, update_plt/1,
          local_fun_same_as_callback/1,
          remove_plt/1, run_plt_check/1, run_succ_typings/1,
-         bad_dialyzer_attr/1, merge_plts/1]).
+         bad_dialyzer_attr/1, merge_plts/1, bad_record_type/1]).
 
 suite() ->
   [{timetrap, ?plt_timeout}].
 
 all() -> [build_plt, beam_tests, update_plt, run_plt_check,
           remove_plt, run_succ_typings, local_fun_same_as_callback,
-          bad_dialyzer_attr, merge_plts].
+          bad_dialyzer_attr, merge_plts, bad_record_type].
 
 build_plt(Config) ->
   OutDir = ?config(priv_dir, Config),
@@ -283,8 +283,8 @@ bad_dialyzer_attr(Config) ->
     {dialyzer_error,
      "Analysis failed with error:\n" ++ Str1} =
         (catch dialyzer:run(Opts)),
-    P1 = string:str(Str1, "dial.erl:2: function undef/0 undefined"),
-    true = P1 > 0,
+    S1 = string:find(Str1, "dial.erl:2: function undef/0 undefined"),
+    true = is_list(S1),
 
     Prog2 = <<"-module(dial).
                -dialyzer({no_return, [{undef,1,2}]}).">>,
@@ -292,9 +292,9 @@ bad_dialyzer_attr(Config) ->
     {dialyzer_error,
      "Analysis failed with error:\n" ++ Str2} =
         (catch dialyzer:run(Opts)),
-    P2 = string:str(Str2, "dial.erl:2: badly formed dialyzer "
-                          "attribute: {no_return,{undef,1,2}}"),
-    true = P2 > 0,
+    S2 = string:find(Str2, "dial.erl:2: badly formed dialyzer "
+                           "attribute: {no_return,{undef,1,2}}"),
+    true = is_list(S2),
 
     ok.
 
@@ -369,6 +369,32 @@ create_plts(Mod1, Mod2, Config) ->
 
 %% End of merge_plts().
 
+bad_record_type(Config) ->
+    PrivDir = ?config(priv_dir, Config),
+    Source = lists:concat([bad_record_type, ".erl"]),
+    Filename = filename:join(PrivDir, Source),
+    PltFilename = dialyzer_common:plt_file(PrivDir),
+
+    Opts = [{files, [Filename]},
+            {check_plt, false},
+            {from, src_code},
+            {init_plt, PltFilename}],
+
+    Prog = <<"-module(bad_record_type).
+              -export([r/0]).
+              -record(r, {f = 3 :: integer()}).
+              -spec r() -> #r{f :: atom()}.
+              r() ->
+                  #r{}.">>,
+    ok = file:write_file(Filename, Prog),
+    {dialyzer_error,
+     "Analysis failed with error:\n" ++ Str} =
+        (catch dialyzer:run(Opts)),
+    P = string:str(Str,
+                    "bad_record_type.erl:4: Illegal declaration of #r{f}"),
+    true = P > 0,
+    ok.
+
 erlang_beam() ->
     case code:where_is_file("erlang.beam") of
         non_existing ->
diff --git a/lib/dialyzer/test/small_SUITE_data/results/maps_sum b/lib/dialyzer/test/small_SUITE_data/results/maps_sum
index bd192bdb93..b29ac77d88 100644
--- a/lib/dialyzer/test/small_SUITE_data/results/maps_sum
+++ b/lib/dialyzer/test/small_SUITE_data/results/maps_sum
@@ -1,4 +1,4 @@
 
-maps_sum.erl:15: Invalid type specification for function maps_sum:wrong1/1. The success typing is (map()) -> any()
+maps_sum.erl:15: Invalid type specification for function maps_sum:wrong1/1. The success typing is (maps:iterator() | map()) -> any()
 maps_sum.erl:26: Function wrong2/1 has no local return
 maps_sum.erl:27: The call lists:foldl(fun((_,_,_) -> any()),0,Data::any()) will never return since it differs in the 1st argument from the success typing arguments: (fun((_,_) -> any()),any(),[any()])
diff --git a/lib/dialyzer/vsn.mk b/lib/dialyzer/vsn.mk
index d130b14fec..1b46f66602 100644
--- a/lib/dialyzer/vsn.mk
+++ b/lib/dialyzer/vsn.mk
@@ -1 +1 @@
-DIALYZER_VSN = 3.2.2
+DIALYZER_VSN = 3.2.3
diff --git a/lib/diameter/doc/src/notes.xml b/lib/diameter/doc/src/notes.xml
index d1ad00de5c..ba4525fd20 100644
--- a/lib/diameter/doc/src/notes.xml
+++ b/lib/diameter/doc/src/notes.xml
@@ -43,6 +43,56 @@ first.</p>
 
 <!-- ===================================================================== -->
 
+<section><title>diameter 2.1.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fix documentation typo: peer_down/3 was written where
+	    peer_down/3 was intended.</p>
+          <p>
+	    Own Id: OTP-14805</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>diameter 2.1.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    A fault introduced in diameter 2.1 could cause decode
+	    errors to be ignored in AVPs following the header of a
+	    Grouped AVP.</p>
+          <p>
+	    Own Id: OTP-14684 Aux Id: ERIERL-85 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>diameter 2.1.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    An inadvertently removed monitor in diameter 2.1 caused
+	    the ets table diameter_reg to leak entries, and caused
+	    service restart and more to fail.</p>
+          <p>
+	    Own Id: OTP-14668 Aux Id: ERIERL-83 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>diameter 2.1</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/diameter/doc/src/seealso.ent b/lib/diameter/doc/src/seealso.ent
index c5a53670d0..72d74c103c 100644
--- a/lib/diameter/doc/src/seealso.ent
+++ b/lib/diameter/doc/src/seealso.ent
@@ -79,7 +79,7 @@ significant.
 <!ENTITY app_handle_answer '<seealso marker="diameter_app#Mod:handle_answer-4">handle_answer/4</seealso>'>
 <!ENTITY app_handle_request '<seealso marker="diameter_app#Mod:handle_request-3">handle_request/3</seealso>'>
 <!ENTITY app_handle_error '<seealso marker="diameter_app#Mod:handle_error-4">handle_error/4</seealso>'>
-<!ENTITY app_peer_down '<seealso marker="diameter_app#Mod:peer_down-3">peer_up/3</seealso>'>
+<!ENTITY app_peer_down '<seealso marker="diameter_app#Mod:peer_down-3">peer_down/3</seealso>'>
 <!ENTITY app_peer_up '<seealso marker="diameter_app#Mod:peer_up-3">peer_up/3</seealso>'>
 <!ENTITY app_pick_peer '<seealso marker="diameter_app#Mod:pick_peer-4">pick_peer/4</seealso>'>
 <!ENTITY app_prepare_retransmit '<seealso marker="diameter_app#Mod:prepare_retransmit-3">prepare_retransmit/3</seealso>'>
diff --git a/lib/diameter/src/base/diameter_gen.erl b/lib/diameter/src/base/diameter_gen.erl
index d3b9f704fe..93ebe57685 100644
--- a/lib/diameter/src/base/diameter_gen.erl
+++ b/lib/diameter/src/base/diameter_gen.erl
@@ -320,8 +320,8 @@ decode(Bin, Code, Vid, DataLen, Pad, M, P, Name, Mod, Fmt, Strict, Opts0,
                                 index = Idx},
 
             Dec = dec(Data, Name, NameT, Mod, Fmt, Opts, Avp),
-            Acc = decode(T, Name, Mod, Fmt, Strict, Opts, Idx+1, AM),%% recurse
-            acc(Acc, Dec, I, Field, Arity, Strict, Mod, Opts);
+            Acc = decode(T, Name, Mod, Fmt, Strict, Opts0, Idx+1, AM),%% recurse
+            acc(Acc, Dec, I, Field, Arity, Strict, Mod);
         _ ->
             {NameT, _Field, _Arity, {_, AM}}
                 = incr(Name, Code, Vid, M, Mod, Strict, Opts0, AM0),
@@ -574,15 +574,17 @@ dec_AVP(Dicts, Data, Name, Mod, Fmt, Opts, #diameter_avp{code = Code,
 %% Try to decode an AVP in the first alternate dictionary that defines
 %% it.
 
-dec_AVP([Dict | Rest], Data, Name, Mod, Fmt, Opts, Code, Vid, Avp) ->
+dec_AVP([Dict | Rest], Data, Name, Mod, Fmt, Opts0, Code, Vid, Avp) ->
     case Dict:avp_name(Code, Vid) of
-        {AvpName, Type} ->
+        {AvpName, Type} = NameT ->
             A = Avp#diameter_avp{name = AvpName,
                                  type = Type},
-            #{failed_avp := Failed} = Opts,
+            #{failed_avp := Failed}
+                = Opts
+                = setopts(NameT, Name, Avp#diameter_avp.is_mandatory, Opts0),
             dec(Data, Name, AvpName, Type, Mod, Dict, Fmt, Failed, Opts, A);
         _ ->
-            dec_AVP(Rest, Data, Name, Mod, Fmt, Opts, Code, Vid, Avp)
+            dec_AVP(Rest, Data, Name, Mod, Fmt, Opts0, Code, Vid, Avp)
     end;
 
 dec_AVP([], _, _, _, _, _, _, _, Avp) ->
@@ -680,30 +682,30 @@ set_failed('Failed-AVP', #{failed_avp := false} = Opts) ->
 set_failed(_, Opts) ->
     Opts.
 
-%% acc/8
+%% acc/7
 
-acc([AM | Acc], As, I, Field, Arity, Strict, Mod, Opts) ->
-    [AM | acc1(Acc, As, I, Field, Arity, Strict, Mod, Opts)].
+acc([AM | Acc], As, I, Field, Arity, Strict, Mod) ->
+    [AM | acc1(Acc, As, I, Field, Arity, Strict, Mod)].
 
-%% acc1/8
+%% acc1/7
 
 %% Faulty AVP, not grouped.
-acc1(Acc, {_RC, Avp} = E, _, _, _, _, _, _) ->
+acc1(Acc, {_RC, Avp} = E, _, _, _, _, _) ->
     [Avps, Failed | Rec] = Acc,
     [[Avp | Avps], [E | Failed] | Rec];
 
 %% Faulty component in grouped AVP.
-acc1(Acc, {RC, As, Avp}, _, _, _, _, _, _) ->
+acc1(Acc, {RC, As, Avp}, _, _, _, _, _) ->
     [Avps, Failed | Rec] = Acc,
     [[As | Avps], [{RC, Avp} | Failed] | Rec];
 
 %% Grouped AVP ...
-acc1([Avps | Acc], [Avp|_] = As, I, Field, Arity, Strict, Mod, Opts) ->
-    [[As|Avps] | acc2(Acc, Avp, I, Field, Arity, Strict, Mod, Opts)];
+acc1([Avps | Acc], [Avp|_] = As, I, Field, Arity, Strict, Mod) ->
+    [[As|Avps] | acc2(Acc, Avp, I, Field, Arity, Strict, Mod)];
 
 %% ... or not.
-acc1([Avps | Acc], Avp, I, Field, Arity, Strict, Mod, Opts) ->
-    [[Avp|Avps] | acc2(Acc, Avp, I, Field, Arity, Strict, Mod, Opts)].
+acc1([Avps | Acc], Avp, I, Field, Arity, Strict, Mod) ->
+    [[Avp|Avps] | acc2(Acc, Avp, I, Field, Arity, Strict, Mod)].
 
 %% The component list of a Grouped AVP is discarded when packing into
 %% the record (or equivalent): the values in an 'AVP' field are
@@ -713,24 +715,24 @@ acc1([Avps | Acc], Avp, I, Field, Arity, Strict, Mod, Opts) ->
 %% retain the same structure as in diameter_packet.avps, but an 'AVP'
 %% list has always been flat.
 
-%% acc2/8
+%% acc2/7
 
 %% No errors, but nowhere to pack.
-acc2(Acc, Avp, _, 'AVP', 0, _, _, _) ->
+acc2(Acc, Avp, _, 'AVP', 0, _, _) ->
     [Failed | Rec] = Acc,
     [[{rc(Avp), Avp} | Failed] | Rec];
 
 %% Relaxed arities.
-acc2(Acc, Avp, _, Field, Arity, Strict, Mod, _)
+acc2(Acc, Avp, _, Field, Arity, Strict, Mod)
   when Strict /= decode ->
     pack(Arity, Field, Avp, Mod, Acc);
 
 %% No maximum arity.
-acc2(Acc, Avp, _, Field, {_,'*'} = Arity, _, Mod, _) ->
+acc2(Acc, Avp, _, Field, {_,'*'} = Arity, _, Mod) ->
     pack(Arity, Field, Avp, Mod, Acc);
 
 %% Or check.
-acc2(Acc, Avp, I, Field, Arity, _, Mod, _) ->
+acc2(Acc, Avp, I, Field, Arity, _, Mod) ->
     Mx = max_arity(Arity),
     if Mx =< I ->
             [Failed | Rec] = Acc,
diff --git a/lib/diameter/src/base/diameter_reg.erl b/lib/diameter/src/base/diameter_reg.erl
index bd5db54a5c..5b7cfab31a 100644
--- a/lib/diameter/src/base/diameter_reg.erl
+++ b/lib/diameter/src/base/diameter_reg.erl
@@ -238,7 +238,11 @@ handle_call({add, Uniq, Key}, {Pid, _}, S) ->
     Rec = {Key, Pid},
     NS = flush(Uniq, Rec, S),  %% before insert
     {Res, New} = insert(Uniq, Rec),
-    {reply, Res, notify(add, New andalso Rec, NS)};
+    {reply, Res, notify(add, New andalso Rec, if New ->
+                                                      add_monitor(Pid, NS);
+                                                 true ->
+                                                      NS
+                                              end)};
 
 handle_call({remove, Key}, {Pid, _}, S) ->
     Rec = {Key, Pid},
@@ -294,6 +298,11 @@ terminate(_Reason, _State)->
 %% # code_change/3
 %% ----------------------------------------------------------
 
+code_change(_, State, "2.1") ->
+    {ok, lists:foldl(fun add_monitor/2,
+                     State,
+                     ets:select(?TABLE, [{{'_', '$1'}, [], ['$1']}]))};
+
 code_change(_OldVsn, State, _Extra) ->
     {ok, State}.
 
diff --git a/lib/diameter/src/diameter.appup.src b/lib/diameter/src/diameter.appup.src
index 7566cf25c3..7da59f8b25 100644
--- a/lib/diameter/src/diameter.appup.src
+++ b/lib/diameter/src/diameter.appup.src
@@ -53,7 +53,11 @@
   {"1.12",    [{restart_application, diameter}]},  %% 19.0
   {"1.12.1",  [{restart_application, diameter}]},  %% 19.1
   {"1.12.2",  [{restart_application, diameter}]},  %% 19.3
-  {"2.0",     [{restart_application, diameter}]}   %% 20.0
+  {"2.0",     [{restart_application, diameter}]},  %% 20.0
+  {"2.1",     [{load_module, diameter_gen},        %% 20.1
+               {update, diameter_reg, {advanced, "2.1"}}]},
+  {"2.1.1",   [{load_module, diameter_gen}]},      %% 20.1.2
+  {"2.1.2",   []}                                  %% 20.1.3
  ],
  [
   {"0.9",     [{restart_application, diameter}]},
@@ -88,6 +92,9 @@
   {"1.12",    [{restart_application, diameter}]},
   {"1.12.1",  [{restart_application, diameter}]},
   {"1.12.2",  [{restart_application, diameter}]},
-  {"2.0",     [{restart_application, diameter}]}
+  {"2.0",     [{restart_application, diameter}]},
+  {"2.1",     [{restart_application, diameter}]},
+  {"2.1.1",   [{load_module, diameter_gen}]},
+  {"2.1.2",   []}
  ]
 }.
diff --git a/lib/diameter/test/diameter_reg_SUITE.erl b/lib/diameter/test/diameter_reg_SUITE.erl
index e2a1ca00c3..cd9242faa8 100644
--- a/lib/diameter/test/diameter_reg_SUITE.erl
+++ b/lib/diameter/test/diameter_reg_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2010-2016. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2017. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -34,6 +34,7 @@
 -export([add/1,
          add_new/1,
          remove/1,
+         down/1,
          terms/1,
          pids/1]).
 
@@ -56,6 +57,7 @@ tc() ->
     [add,
      add_new,
      remove,
+     down,
      terms,
      pids].
 
@@ -88,6 +90,13 @@ remove(_) ->
     [{Ref, Pid}] = ?reg:match(Ref),
     Pid = self().
 
+down(_) ->
+    Ref = make_ref(),
+    {_, MRef} = spawn_monitor(fun() -> ?reg:add_new(Ref), timer:sleep(1000) end),
+    receive {'DOWN', MRef, process, _, _} -> ok end,
+    timer:sleep(1000),
+    [] = ?reg:match(Ref).
+
 terms(_) ->
     Ref = make_ref(),
     true = ?reg:add_new(Ref),
diff --git a/lib/diameter/vsn.mk b/lib/diameter/vsn.mk
index e6dfddb5b2..0c852d75cd 100644
--- a/lib/diameter/vsn.mk
+++ b/lib/diameter/vsn.mk
@@ -17,5 +17,5 @@
 # %CopyrightEnd%
 
 APPLICATION  = diameter
-DIAMETER_VSN = 2.1
+DIAMETER_VSN = 2.1.3
 APP_VSN      = $(APPLICATION)-$(DIAMETER_VSN)$(PRE_VSN)
diff --git a/lib/edoc/doc/src/Makefile b/lib/edoc/doc/src/Makefile
index ce7945a1bb..ca9ea66e3c 100644
--- a/lib/edoc/doc/src/Makefile
+++ b/lib/edoc/doc/src/Makefile
@@ -9,11 +9,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # The Initial Developer of the Original Code is Ericsson Utvecklings AB.
 # Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
 # AB. All Rights Reserved.''
-# 
+#
 include $(ERL_TOP)/make/target.mk
 include $(ERL_TOP)/make/$(TARGET)/otp.mk
 
@@ -47,7 +47,7 @@ XML_REF3_FILES = \
 	edoc_lib.xml \
 	edoc_run.xml
 
-XML_PART_FILES = part.xml part_notes.xml
+XML_PART_FILES = part.xml
 XML_CHAPTER_FILES = chapter.xml
 XML_NOTES_FILES = notes.xml
 
@@ -80,10 +80,10 @@ TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -109,19 +109,19 @@ $(XML_CHAPTER_FILES): ../overview.edoc
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
 	rm -f $(MAN3DIR)/*
 	rm -f $(XML_REF3_FILES) $(XML_CHAPTER_FILES) *.html
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/edoc/doc/src/fascicules.xml b/lib/edoc/doc/src/fascicules.xml
deleted file mode 100644
index 154c8a3b6d..0000000000
--- a/lib/edoc/doc/src/fascicules.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-</fascicules>
-
diff --git a/lib/edoc/doc/src/notes.xml b/lib/edoc/doc/src/notes.xml
index 96d7597d83..240789e876 100644
--- a/lib/edoc/doc/src/notes.xml
+++ b/lib/edoc/doc/src/notes.xml
@@ -32,6 +32,21 @@
   <p>This document describes the changes made to the EDoc
     application.</p>
 
+<section><title>Edoc 0.9.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> The map type is correctly denoted as <c>map()</c> in
+	    function specifications and types. </p>
+          <p>
+	    Own Id: OTP-14777</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Edoc 0.9.1</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/edoc/doc/src/part_notes.xml b/lib/edoc/doc/src/part_notes.xml
deleted file mode 100644
index 6a79435ff0..0000000000
--- a/lib/edoc/doc/src/part_notes.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2007</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>EDoc Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p><em>EDoc</em> is the Erlang program documentation generator.
-      Inspired by the Javadoc (TM) tool for the Java (TM) programming
-      language, EDoc is adapted to the conventions of the Erlang world,
-      and has several features not found in Javadoc.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/edoc/priv/Makefile b/lib/edoc/priv/Makefile
index 9873136201..45bff37b39 100644
--- a/lib/edoc/priv/Makefile
+++ b/lib/edoc/priv/Makefile
@@ -1,6 +1,6 @@
 #
 # Copyright (C) 2004, Ericsson Telecommunications
-# Author: Richard Carlsson, Bertil Karlsson 
+# Author: Richard Carlsson, Bertil Karlsson
 #
 include $(ERL_TOP)/make/target.mk
 include $(ERL_TOP)/make/$(TARGET)/otp.mk
@@ -9,9 +9,6 @@ include $(ERL_TOP)/make/$(TARGET)/otp.mk
 # Application version
 # ----------------------------------------------------
 include ../vsn.mk
-include ../../xmerl/vsn.mk
-include ../../syntax_tools/vsn.mk
-
 
 # ----------------------------------------------------
 # Release directory specification
@@ -23,21 +20,12 @@ RELSYSDIR = $(RELEASE_PATH)/lib/edoc-$(EDOC_VSN)
 # Common Macros
 #
 
-GEN_SCRIPT_SRC = edoc_generate.src
 GEN_SCRIPT = edoc_generate
 PRIV_FILES = stylesheet.css erlang.png edoc.dtd
 
-debug opt: $(GEN_SCRIPT)
-
-$(GEN_SCRIPT): ../vsn.mk ../../xmerl/vsn.mk ../../syntax_tools/vsn.mk \
-		$(GEN_SCRIPT_SRC)
-	$(vsn_verbose)sed -e "s/%EDOC_VSN%/$(EDOC_VSN)/g" \
-	    -e "s/%XMERL_VSN%/$(XMERL_VSN)/g" \
-	    -e "s/%SYNTAX_TOOLS_VSN%/$(SYNTAX_TOOLS_VSN)/g" \
-		$(GEN_SCRIPT_SRC) > $(GEN_SCRIPT)
+debug opt:
 
 clean:
-	rm -f $(GEN_SCRIPT)
 	rm -f core *~
 
 docs:
@@ -54,4 +42,3 @@ release_spec: opt
 
 
 release_docs_spec:
-
diff --git a/lib/edoc/priv/edoc_generate.src b/lib/edoc/priv/edoc_generate
index eeaa20f959..0492623c7f 100644
--- a/lib/edoc/priv/edoc_generate.src
+++ b/lib/edoc/priv/edoc_generate
@@ -10,28 +10,18 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # The Initial Developer of the Original Code is Ericsson Utvecklings AB.
-# Portions created by Ericsson are Copyright 1999-2000, Ericsson 
+# Portions created by Ericsson are Copyright 1999-2000, Ericsson
 # Utvecklings AB. All Rights Reserved.''
-# 
-
-#EDOC_DIR=/clearcase/otp/internal_tools/edoc
-EDOC_DIR=/home/otp/sgml/edoc-%EDOC_VSN%
-SYNTAX_TOOLS_DIR=/home/otp/sgml/syntax_tools-%SYNTAX_TOOLS_VSN%
-XMERL_DIR=/home/otp/sgml/xmerl-%XMERL_VSN%
+#
 
-FILE=
 APP=
 TITLE=
 VSN=
 
 while [ $# -gt 0 ]; do
     case $1 in
-    -file)
-	FILE=$2;
-	shift;
-	shift;;
     -app)
         APP=$2;
 	shift;
@@ -47,28 +37,14 @@ while [ $# -gt 0 ]; do
     esac
 done
 
-if [ -n "$FILE" ] ; then
-    EDOC_ARGS="[{layout,otpsgml_layout},{dir,\".\"},{file_suffix,\".sgml\"},{preprocess,true},{includes,[\"$XMERL_DIR/include\"]}]"
-    erl -boot start_clean -noshell \
-	-pa $EDOC_DIR/ebin \
-	-pa $SYNTAX_TOOLS_DIR/ebin \
-	-pa $XMERL_DIR/ebin \
-	-run edoc_run file $FILE $EDOC_ARGS \
-	-s erlang halt
-elif [ -n "$APP" -a -n "$TITLE" ] ; then 
+if [ -n "$APP" -a -n "$TITLE" ] ; then
     erl -boot start_clean -noshell \
-	-pa $EDOC_DIR/ebin \
-	-pa $SYNTAX_TOOLS_DIR/ebin \
-	-pa $XMERL_DIR/ebin \
 	-run edoc_run application $APP "\".\"" "[{title,$TITLE}]" \
 	-s erlang halt
-elif [ -n "$APP" -a -n "$VSN" ] ; then 
+elif [ -n "$APP" -a -n "$VSN" ] ; then
     erl -boot start_clean -noshell \
-	-pa $EDOC_DIR/ebin \
-	-pa $SYNTAX_TOOLS_DIR/ebin \
-	-pa $XMERL_DIR/ebin \
 	-run edoc_run application $APP "\".\"" "[{def,{vsn,\"$VSN\"}}]" \
 	-s erlang halt
 else
-    echo "Usage: docb_edoc [-file Filename] | [-app Appname [-title Title |-vsn Vsn]]"
+    echo "Usage: edoc_generate [-app Appname [-title Title |-vsn Vsn]]"
 fi
diff --git a/lib/edoc/src/Makefile b/lib/edoc/src/Makefile
index 4e5a4182da..ea2f45dc4c 100644
--- a/lib/edoc/src/Makefile
+++ b/lib/edoc/src/Makefile
@@ -29,8 +29,7 @@ SOURCES= \
 	edoc.erl edoc_data.erl edoc_doclet.erl edoc_extract.erl \
 	edoc_layout.erl edoc_lib.erl edoc_macros.erl edoc_parser.erl \
 	edoc_refs.erl edoc_report.erl edoc_run.erl edoc_scanner.erl \
-	edoc_specs.erl edoc_tags.erl edoc_types.erl edoc_wiki.erl \
-	otpsgml_layout.erl
+	edoc_specs.erl edoc_tags.erl edoc_types.erl edoc_wiki.erl
 
 OBJECTS=$(SOURCES:%.erl=$(EBIN)/%.$(EMULATOR)) $(APP_TARGET) $(APPUP_TARGET)
 
diff --git a/lib/edoc/src/edoc.app.src b/lib/edoc/src/edoc.app.src
index e4b9040c78..43343e2ae8 100644
--- a/lib/edoc/src/edoc.app.src
+++ b/lib/edoc/src/edoc.app.src
@@ -18,8 +18,7 @@
              edoc_specs,
 	     edoc_tags,
 	     edoc_types,
-	     edoc_wiki,
-	     otpsgml_layout]},
+	     edoc_wiki]},
   {registered,[]},
   {applications, [compiler,kernel,stdlib,syntax_tools]},
   {env, []},
diff --git a/lib/edoc/src/edoc_specs.erl b/lib/edoc/src/edoc_specs.erl
index 26b7202462..7b451c43f8 100644
--- a/lib/edoc/src/edoc_specs.erl
+++ b/lib/edoc/src/edoc_specs.erl
@@ -372,7 +372,7 @@ d2e({type,_,binary,[Base,Unit]}, _Prec) ->
     {integer,_,U} = erl_eval:partial_eval(Unit),
     #t_binary{base_size = B, unit_size = U};
 d2e({type,_,map,any}, _Prec) ->
-    #t_map{types = []};
+    #t_type{name = #t_name{name = map}, args = []};
 d2e({type,_,map,Es}, _Prec) ->
     #t_map{types = d2e(Es) };
 d2e({type,_,map_field_assoc,[K,V]}, Prec) ->
diff --git a/lib/edoc/src/otpsgml_layout.erl b/lib/edoc/src/otpsgml_layout.erl
deleted file mode 100644
index 295daed551..0000000000
--- a/lib/edoc/src/otpsgml_layout.erl
+++ /dev/null
@@ -1,836 +0,0 @@
-%% =====================================================================
-%% Licensed under the Apache License, Version 2.0 (the "License"); you may
-%% not use this file except in compliance with the License. You may obtain
-%% a copy of the License at <http://www.apache.org/licenses/LICENSE-2.0>
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% Alternatively, you may use this file under the terms of the GNU Lesser
-%% General Public License (the "LGPL") as published by the Free Software
-%% Foundation; either version 2.1, or (at your option) any later version.
-%% If you wish to allow use of your version of this file only under the
-%% terms of the LGPL, you should delete the provisions above and replace
-%% them with the notice and other provisions required by the LGPL; see
-%% <http://www.gnu.org/licenses/>. If you do not delete the provisions
-%% above, a recipient may use your version of this file under the terms of
-%% either the Apache License or the LGPL.
-%%
-%% @author Richard Carlsson <[email protected]>
-%% @author Kenneth Lundin <[email protected]>
-%% @copyright 2001-2004 Richard Carlsson
-%% @see edoc_layout
-%% @end
-%% =====================================================================
-
-%% @doc The OTP SGML layout module for EDoc. See the module {@link edoc}
-%% for details on usage.
-
-%% Note that this is written so that it is *not* depending on edoc.hrl!
-
--module(otpsgml_layout).
-
--export([module/2, overview/2,type/1]).
-
--import(edoc_report, [report/2]).
-
--include_lib("xmerl/include/xmerl.hrl").
-
--define(SGML_EXPORT, xmerl_otpsgml).
--define(DEFAULT_XML_EXPORT, ?SGML_EXPORT).
--define(STYLESHEET, "stylesheet.css").
--define(NL, "\n").
--define(DESCRIPTION_TITLE, "Description").
--define(DESCRIPTION_LABEL, "description").
--define(DATA_TYPES_TITLE, "Data Types").
--define(DATA_TYPES_LABEL, "types").
--define(FUNCTION_INDEX_TITLE, "Function Index").
--define(FUNCTION_INDEX_LABEL, "index").
--define(FUNCTIONS_TITLE, "Function Details").
--define(FUNCTIONS_LABEL, "functions").
-
-
-%% @doc The layout function.
-%%
-%% Options:
-%% <dl>
-%%  <dt>{@type {index_columns, integer()@}}
-%%  </dt>
-%%  <dd>Specifies the number of column pairs used for the function
-%%      index tables. The default value is 1.
-%%  </dd>
-%%  <dt>{@type {stylesheet, string()@}}
-%%  </dt>
-%%  <dd>Specifies the URI used for referencing the stylesheet. The
-%%      default value is `"stylesheet.css"'. If an empty string is
-%%      specified, no stylesheet reference will be generated.
-%%  </dd>
-%%  <dt>{@type {xml_export, Module::atom()@}}
-%%  </dt>
-%%  <dd>Specifies an {@link //xmerl. `xmerl'} callback module to be
-%%      used for exporting the documentation. See {@link
-%%      //xmerl/xmerl:export_simple/3} for details.
-%%  </dd>
-%% </dl>
-%%
-%% @see edoc:layout/2
-
--record(opts, {root, stylesheet, index_columns}).
-
-module(Element, Options) ->
-    XML = layout_module(Element, init_opts(Element, Options)),
-    Export = proplists:get_value(xml_export, Options,
-				 ?DEFAULT_XML_EXPORT),
-    xmerl:export_simple([XML], Export, []).
-
-% Put layout options in a data structure for easier access.
-
-init_opts(Element, Options) ->
-    R = #opts{root = get_attrval(root, Element),
-	      index_columns = proplists:get_value(index_columns,
-						  Options, 1)
-	     },
-    case proplists:get_value(stylesheet, Options) of
-	undefined ->
-	    S = edoc_lib:join_uri(R#opts.root, ?STYLESHEET),
-	    R#opts{stylesheet = S};
-	"" ->
-	    R;  % don't use any stylesheet
-	S when is_list(S) ->
-	    R#opts{stylesheet = S}; 
-	_ ->
-	    report("bad value for option `stylesheet'.", []),
-	    exit(error)
-    end.
-
-
-%% =====================================================================
-%% XML-BASED LAYOUT ENGINE
-%% =====================================================================
-
-%% We assume that we have expanded XML data.
-
-%% <!ELEMENT module (moduleName, moduleFullName, behaviour*, description?,
-%%                   author*, version?, since?, copyright?, deprecated?,
-%%                   see*, reference*, typedecls?, functions)>
-%% <!ATTLIST module
-%%   root CDATA #IMPLIED>
-%% <!ELEMENT moduleName (#PCDATA)>
-%% <!ELEMENT moduleFullName (#PCDATA)>
-%% <!ELEMENT behaviour (#PCDATA)>
-%% <!ATTLIST behaviour
-%%   href CDATA #IMPLIED>
-%% <!ELEMENT description (briefDescription, fullDescription?)>
-%% <!ELEMENT briefDescription (#PCDATA)>
-%% <!ELEMENT fullDescription (#PCDATA)>
-%% <!ELEMENT author EMPTY>
-%% <!ATTLIST author
-%%   name CDATA #REQUIRED
-%%   email CDATA #IMPLIED
-%%   website CDATA #IMPLIED>
-%% <!ELEMENT version (#PCDATA)>
-%% <!ELEMENT since (#PCDATA)>
-%% <!ELEMENT copyright (#PCDATA)>
-%% <!ELEMENT deprecated (description)>
-%% <!ELEMENT see (#PCDATA)>
-%% <!ATTLIST see
-%%   name CDATA #REQUIRED
-%%   href CDATA #IMPLIED>
-%% <!ELEMENT reference (#PCDATA)>
-%% <!ELEMENT typedecls (typedecl+)>
-%% <!ELEMENT functions (function+)>
-
-layout_module(#xmlElement{name = module, content = Es}=E, _Opts) ->
-    Name = get_attrval(name, E),
-    Desc = get_content(description, Es),
-    ShortDesc = get_content(briefDescription, Desc),
-    FullDesc = get_content(fullDescription, Desc),
-    Functions = [E || E <- get_content(functions, Es)],
-    SortedFs = lists:sort([{function_name(E), E} || E <- Functions]),
-    Types = get_content(typedecls, Es),
-    SortedTs = lists:sort([{type_name(E), E} || E <- Types]),
-    Header = {header, [
-		       ?NL,{title, [Name]},
-		       ?NL,{prepared, [""]},
-		       ?NL,{responsible, [""]},
-		       ?NL,{docno, ["1"]},
-		       ?NL,{approved, [""]},
-		       ?NL,{checked, [""]},
-		       ?NL,{date, [""]},
-		       ?NL,{rev, ["A"]},
-		       ?NL,{file, [Name++".sgml"]}
-		      ]},
-    Module = {module, [Name]},
-    ModuleSummary = {modulesummary, ShortDesc},
-    {Short,Long} = find_first_p(FullDesc,[]),
-    Description = {description, [?NL,{p,Short}|Long]++[?NL|types(SortedTs)]},
-    Funcs = functions(SortedFs),
-    Authors = {authors, authors(Es)},
-    See = sees1(Es),
-    {erlref, [
-	      ?NL,Header,
-	      ?NL,Module,
-	      ?NL,ModuleSummary,
-	      ?NL,Description,
-	      ?NL,Funcs,
-	      ?NL,See,
-	      ?NL,Authors
-	     ]
-    }.
-
-stylesheet(Opts) ->
-    case Opts#opts.stylesheet of
-	undefined ->
-	    [];
-	CSS ->
-	    [{link, [{rel, "stylesheet"},
-		     {type, "text/css"},
-		     {href, CSS}], []},
-	     ?NL]
-    end.
-
-% doc_index(FullDesc, Functions, Types) ->
-%     case doc_index_rows(FullDesc, Functions, Types) of
-% 	[] -> [];
-% 	Rs ->
-% 	    [{ul, [{li, [{a, [{href, local_label(R)}], [T]}]}
-% 		   || {T, R} <- Rs]}]
-%     end.
-
-% doc_index_rows(FullDesc, Functions, Types) ->
-%     (if FullDesc == [] -> [];
-% 	true -> [{?DESCRIPTION_TITLE, ?DESCRIPTION_LABEL}]
-%      end
-%      ++ if Types == [] -> [];
-% 	   true -> [{?DATA_TYPES_TITLE, ?DATA_TYPES_LABEL}]
-% 	end
-%      ++ if Functions == [] -> [];
-% 	   true -> [{?FUNCTION_INDEX_TITLE, ?FUNCTION_INDEX_LABEL},
-% 		    {?FUNCTIONS_TITLE, ?FUNCTIONS_LABEL}]
-% 	end).
-
-% function_index(Fs, Cols) ->
-%     case function_index_rows(Fs, Cols, []) of
-% 	[] -> [];
-% 	Rows ->
-% 	    [?NL,
-% 	     {h2, [{a, [{name, ?FUNCTION_INDEX_LABEL}],
-% 		    [?FUNCTION_INDEX_TITLE]}]},
-% 	     ?NL,
-% 	     {table, [{width, "100%"}, {border, 1}], Rows},
-% 	     ?NL]
-%     end.
-
-% function_index_rows(Fs, Cols, Title) ->
-%     Rows = (length(Fs) + (Cols - 1)) div Cols,
-%     (if Title == [] -> [];
-% 	true -> [{tr, [{th, [{colspan, Cols * 2}, {align, left}],
-% 			[Title]}]},
-% 		 ?NL]
-%      end
-%      ++ lists:flatmap(fun index_row/1,
-% 		      edoc_lib:transpose(edoc_lib:segment(Fs, Rows)))).
-
-% index_row(Fs) ->
-%     [{tr, lists:flatmap(fun index_col/1, Fs)}, ?NL].
-
-% index_col({Name, F=#xmlElement{content = Es}}) ->
-%     [{td, [{valign, "top"}], label_href([Name], F)},
-%      {td, index_desc(Es)}].
-
-index_desc(Es) ->
-    Desc = get_content(description, Es),
-    case get_content(briefDescription, Desc) of
-	[] ->
-	    equiv(Es);    % no description at all if no equiv
-	ShortDesc ->
-	    ShortDesc
-    end.
-
-% label_href(Content, F) ->
-%     case get_attrval(label, F) of
-% 	"" -> Content;
-% 	Ref -> [{a, [{href, local_label(Ref)}], Content}]
-%     end.
-
-
-%% <!ELEMENT function (args, typespec?, equiv?, description?, since?,
-%%                     deprecated?, see*)>
-%% <!ATTLIST function
-%%   name CDATA #REQUIRED
-%%   arity CDATA #REQUIRED
-%%   exported NMTOKEN(yes | no) #REQUIRED
-%%   label CDATA #IMPLIED>
-%% <!ELEMENT args (arg*)>
-%% <!ELEMENT arg description?>
-%% <!ATTLIST arg name CDATA #REQUIRED>
-
-
-%% <!ELEMENT equiv (expr, see?)>
-%% <!ELEMENT expr (#PCDATA)>
-
-% functions(Fs) ->
-%     Es = lists:flatmap(fun ({Name, E}) -> function(Name, E) end, Fs),
-%     if Es == [] -> [];
-%        true ->
-% 	    [?NL,
-% 	     {h2, [{a, [{name, ?FUNCTIONS_LABEL}], [?FUNCTIONS_TITLE]}]},
-% 	     ?NL | Es]
-%     end.
-
-functions(Fs) ->
-    Es = lists:flatmap(fun ({Name, E}) -> function(Name, E) end, Fs),
-    if Es == [] -> [];
-       true ->
-	    {funcs, Es}
-    end.
-
-% is_exported(E) ->
-%     case get_attrval(exported, E) of
-% 	"yes" -> true;
-% 	_ -> false
-%     end.
-
-% function(Name, E=#xmlElement{content = Es}) ->
-%     ([?NL, {h3, label_anchor([Name], E)}, ?NL]
-%      ++ case typespec(get_content(typespec, Es)) of
-% 	    [] ->
-% 		signature(get_content(arguments, Es),
-% 			  get_text(functionName, Es));
-% 	    Spec -> Spec
-% 	end
-%      ++ equiv(Es)
-%      ++ deprecated(Es, "function")
-%      ++ fulldesc(Es)
-%      ++ since(Es)
-%      ++ sees(Es)).
-
-function(_Name, E=#xmlElement{content = Es}) ->
-    TypeSpec = get_content(typespec, Es),
-    [?NL,{func, [ ?NL,
-		  {name, 
-%			  case typespec(get_content(typespec, Es)) of
-			  case funcheader(TypeSpec) of
-			      [] ->
-				  signature(get_content(args, Es),
-					    get_attrval(name, E));
-			      Spec -> Spec
-			  end
-			 },
-		  ?NL,{fsummary, fsummary(Es)},
-%		  ?NL,{type, local_types(TypeSpec)},
-		  ?NL,local_types(TypeSpec),
-		  ?NL,{desc, label_anchor(E)++fulldesc(Es)++sees(Es)}
-	   ]}].
-
-fsummary([]) -> ["\s"];
-fsummary(Es) ->
-    Desc = get_content(description, Es),
-    case get_content(briefDescription, Desc) of
-	[] ->
-	    fsummary_equiv(Es);    % no description at all if no equiv
-	ShortDesc ->
-	    ShortDesc
-    end.
-
-
-fsummary_equiv(Es) ->
-    case get_content(equiv, Es) of
-	[] -> ["\s"];
-	Es1 ->
-	    case get_content(expr, Es1) of
-		[] -> ["\s"];
-		[Expr] ->
-		    ["Equivalent to ", Expr, ".",?NL]
-	    end
-    end.
-
-
-function_name(E) ->
-    get_attrval(name, E) ++ "/" ++ get_attrval(arity, E).
-
-label_anchor(E) ->
-    case get_attrval(label, E) of
-	"" -> [];
-	Ref -> [{marker, [{id, Ref}],[]},?NL]
-    end.
-
-label_anchor(Content, E) ->
-    case get_attrval(label, E) of
-	"" -> Content;
-	Ref -> {p,[{marker, [{id, Ref}],[]},
-		   {em, Content}]}
-    end.
-
-%% <!ELEMENT args (arg*)>
-%% <!ELEMENT arg (argName, description?)>
-%% <!ELEMENT argName (#PCDATA)>
-
-%% This is currently only done for functions without type spec.
-
-signature(Es, Name) -> 
-%    [{tt, [Name, "("] ++ seq(fun arg/1, Es) ++ [") -> term()", ?NL]}].
-    [Name, "("] ++ seq(fun arg/1, Es) ++ [") -> term()", ?NL].
-
-arg(#xmlElement{content = Es}) ->
-    [get_text(argName, Es)].
-
-%% <!ELEMENT typespec (erlangName, type, localdef*)>
-
-% typespec([]) -> [];
-% typespec(Es) ->
-%     [{p, ([{tt, ([t_name(get_elem(qualifiedName, Es))]
-% 		 ++ t_type(get_content(type, Es)))}]
-% 	  ++ local_defs(get_elem(definition, Es)))},
-%      ?NL].
-
-funcheader([]) -> [];
-funcheader(Es) ->
-    [t_name(get_elem(erlangName, Es))] ++ t_utype(get_elem(type, Es)).
-
-local_types([]) -> [];
-local_types(Es) ->
-    local_defs2(get_elem(localdef, Es)).
-
-local_defs2([]) -> [];
-local_defs2(Es) ->
-    {type,[?NL | [{v, localdef(E)} || E <- Es]]}.
-
-%% <!ELEMENT typedecl (typedef, description?)>
-%% <!ELEMENT typedef (erlangName, argtypes, type?, localdef*)>
-
-types([]) -> [];
-types(Ts) ->
-    Es = lists:flatmap(fun ({Name, E}) -> typedecl(Name, E) end, Ts),
-    [?NL,
-%    {h2, [{a, [{name, ?DATA_TYPES_LABEL}],
-%	   [?DATA_TYPES_TITLE]}]},
-%    ?NL | Es]
-     {p,[{marker, [{id, ?DATA_TYPES_LABEL}],[]},
-	 {em,[?DATA_TYPES_TITLE]}]},
-     ?NL, {taglist,[?NL|Es]}].
-
-%%type(Name, E=#xmlElement{content = Es}) ->
-%%    ([?NL, {h3, label_anchor([Name, "()"], E)}, ?NL]
-%%     ++ [{p, typedef(get_content(typedef, Es))}, ?NL]
-%%     ++ fulldesc(Es)).
-typedecl(_Name, #xmlElement{content = Es}) ->
-    [{tag, typedef(get_content(typedef, Es))},?NL,{item,fulldesc(Es)},?NL].
-
-
-type_name(#xmlElement{content = Es}) ->
-    t_name(get_elem(erlangName, get_content(typedef, Es))).
-
-typedef(Es) ->
-    Name = ([t_name(get_elem(erlangName, Es)), "("]
-  	    ++ seq(fun t_utype_elem/1, get_content(argtypes, Es), [")"])),
-    (case get_elem(type, Es) of
- 	 [] -> [{b, ["abstract datatype"]}, ": ", {tt, Name}];
- 	 Type ->
-	     [{tt, Name ++ [" = "] ++ t_utype(Type)}]
-     end
-     ++ local_defs(get_elem(localdef, Es))).
-
-local_defs([]) -> [];
-local_defs(Es) ->
-    [?NL, {ul, [{li, [{tt, localdef(E)}]} || E <- Es]}].
-
-localdef(E = #xmlElement{content = Es}) ->
-    (case get_elem(typevar, Es) of
-	 [] -> 
-	     label_anchor(t_abstype(get_content(abstype, Es)), E);
-	 [V] ->
-	     t_var(V)
-     end
-     ++ [" = "] ++ t_utype(get_elem(type, Es))).
-
-fulldesc(Es) ->
-    case get_content(fullDescription, get_content(description, Es)) of
-%	[] -> [?NL];
-	[] -> index_desc(Es);
-%	Desc -> [{p, Desc}, ?NL]
-	Desc ->
-	    {Short,Long} = find_first_p(Desc,[]),
-	    [?NL,{p,Short}|Long] ++[?NL]
-    end.
-
-find_first_p([#xmlElement{name=p}|_]=Long,Short) ->
-    {lists:reverse(Short),Long};
-find_first_p([H|T],Short) ->
-    find_first_p(T,[H|Short]);
-find_first_p([],Short) ->
-    {lists:reverse(Short),[]}.
-
-
-sees1(Es) ->
-    case get_elem(see, Es) of
-	[] -> [];
-	Es1 ->
-	    {section,[{title,["See also"]},{p,seq(fun see/1, Es1, [])}]}
-    end.
-
-sees(Es) ->
-    case get_elem(see, Es) of
-	[] -> [];
-	Es1 ->
-	    [{p, [{em, ["See also:"]}, " "] ++ seq(fun see/1, Es1, ["."])},
-	     ?NL]
-    end.
-
-see(E=#xmlElement{content = Es}) ->
-    see(E,Es).
-
-see(E, Es) ->
-    case get_attrval(href, E) of
-	"" -> Es;
-	Ref -> 
-	    case lists:reverse(Ref) of
-		"lmgs.ppa_"++Ppa -> 
-		    App = lists:reverse(Ppa),
-		    [{seealso, [{marker, App++"_app"}], [App]},"(6)"];
-		"lmgs."++Dom -> 
-		    Mod = lists:reverse(Dom),
-		    [{seealso, [{marker, Mod}], [Mod]},"(3)"];
-		_ -> 
-		    [{seealso, [{marker, Ref}], Es}]
-	    end
-    end.
-
-equiv(Es) ->
-    case get_content(equiv, Es) of
-	[] -> ["\s"];
-	Es1 ->
-	    case get_content(expr, Es1) of
-		[] -> [];
-		[Expr] ->
-%		    Expr1 = {tt, [Expr]},
-%		    Expr1 = {c, [Expr]},
-		    Expr1 = [Expr],
-		    Expr2 = case get_elem(see, Es1) of
-				[] ->
-				    {c,Expr1};
-				[E=#xmlElement{}] ->
-%				    see(E,Expr1)
- 				    case get_attrval(href, E) of
- 					"" ->
- 					    {c,Expr1};
- 					Ref ->
- 					    {seealso, [{marker, Ref}], Expr1}
- 				    end
-			    end,
-		    [{p, ["Equivalent to ", Expr2, "."]}, ?NL]
-	    end
-    end.
-
-% replace_minus_with_percent([$-|T]) ->
-%     [$%|T];
-% replace_minus_with_percent([H|T]) ->
-%     [H|replace_minus_with_percent(T)].
-
-copyright(Es) ->
-    case get_content(copyright, Es) of
-	[] -> [];
-	Es1 ->
-	    [{p, ["Copyright \251 " | Es1]}, ?NL]
-    end.
-
-version(Es) ->
-    case get_content(version, Es) of
-	[] -> [];
-	Es1 ->
-	    [{p, [{b, ["Version:"]}, " " | Es1]}, ?NL]
-    end.
-
-since(Es) ->
-    case get_content(since, Es) of
-	[] -> [];
-	Es1 ->
-	    [{p, [{b, ["Introduced in:"]}, " " | Es1]}, ?NL]
-    end.
-
-deprecated(Es, S) ->
-    Es1 = get_content(description, get_content(deprecated, Es)),
-    case get_content(fullDescription, Es1) of
-	[] -> [];
-	Es2 ->
-	    [{p, [{b, ["This " ++ S ++ " is deprecated:"]}, " " | Es2]},
-	     ?NL]
-    end.
-
-% behaviours(Es) ->
-%     case get_elem(behaviour, Es) of
-% 	[] -> [];
-% 	Es1 ->
-% 	    [{p, [{b, ["Behaviour:"]}, " "] ++ seq(fun behaviour/1, Es1, ["."])},
-% 	     ?NL]
-%     end.
-
-% behaviour(E=#xmlElement{content = Es}) ->
-%     case get_attrval(href, E) of
-% 	"" -> [{tt, Es}];
-% 	Ref -> [{a, [{href, Ref}], [{tt, Es}]}]
-%     end.
-
-authors(Es) ->
-    case get_elem(author, Es) of
-	[] -> [?NL,{aname,["\s"]},?NL,{email,["\s"]}];
-	Es1 -> [?NL|seq(fun author/1, Es1, [])]
-%
-%	    [{p, [{b, ["Authors:"]}, " "] ++ seq(fun author/1, Es1, ["."])},
-%	     ?NL]
-    end.
-
-
-%% <!ATTLIST author
-%%   name CDATA #REQUIRED
-%%   email CDATA #IMPLIED
-%%   website CDATA #IMPLIED>
-
-author(E=#xmlElement{}) ->
-    Name = case get_attrval(name, E) of
-	       [] -> "\s";
-	       N -> N
-	   end,
-    Mail = case get_attrval(email, E) of
-	       [] -> "\s";
-	       M -> M
-	   end,
-    [?NL,{aname,[Name]},?NL,{email,[Mail]}].
-
-% author(E=#xmlElement{}) ->
-%     Name = get_attrval(name, E),
-%     Mail = get_attrval(email, E),
-%     URI = get_attrval(website, E),
-%     (if Name == Mail ->
-% 	     [{a, [{href, "mailto:" ++ Mail}],[{tt, [Mail]}]}];
-% 	true ->
-% 	     if Mail == "" -> [Name];
-% 		true -> [Name, " (", {a, [{href, "mailto:" ++ Mail}],
-% 				      [{tt, [Mail]}]}, ")"]
-% 	     end
-%      end
-%      ++ if URI == "" -> [];
-% 	   true -> [" [", {em, ["web site:"]}, " ",
-% 		    {tt, [{a, [{href, URI}], [URI]}]}, "]"]
-% 	end).
-
-references(Es) ->
-    case get_elem(reference, Es) of
-	[] -> [];
-	Es1 ->
-	    [{p, [{b, ["References"]},
-		  {ul, [{li, C} || #xmlElement{content = C} <- Es1]}]},
-	     ?NL]
-    end.
-
-t_name([E]) ->
-    N = get_attrval(name, E),
-    case get_attrval(module, E) of
-	"" -> N;
-	M ->
-	    S = M ++ ":" ++ N,
-	    case get_attrval(app, E) of
-		"" -> S;
-		A -> "//" ++ A ++ "/" ++ S
-	    end
-    end.
-
-t_utype([E]) ->
-    t_utype_elem(E).
-
-t_utype_elem(E=#xmlElement{content = Es}) ->
-    case get_attrval(name, E) of
-	"" -> t_type(Es);
-	Name ->
-	    T = t_type(Es),
-	    case T of
-		[Name] -> T;    % avoid generating "Foo::Foo"
-		T -> [Name] ++ ["::"] ++ T
-	    end
-    end.
-
-t_type([E=#xmlElement{name = typevar}]) ->
-    t_var(E);
-t_type([E=#xmlElement{name = atom}]) ->
-    t_atom(E);
-t_type([E=#xmlElement{name = integer}]) ->
-    t_integer(E);
-t_type([E=#xmlElement{name = float}]) ->
-    t_float(E);
-t_type([#xmlElement{name = nil}]) ->
-    t_nil();
-t_type([#xmlElement{name = list, content = Es}]) ->
-    t_list(Es);
-t_type([#xmlElement{name = tuple, content = Es}]) ->
-    t_tuple(Es);
-t_type([#xmlElement{name = 'fun', content = Es}]) ->
-    t_fun(Es);
-t_type([E = #xmlElement{name = abstype, content = Es}]) ->
-    T = t_abstype(Es),
-%    see(E,T);
-     case get_attrval(href, E) of
- 	"" -> T;
- %	Ref -> [{seealso, [{marker, Ref}], T}]
- 	_Ref -> T
-     end;
-t_type([#xmlElement{name = union, content = Es}]) ->
-    t_union(Es).
-
-t_var(E) ->
-    [get_attrval(name, E)].
-
-
-t_atom(E) ->
-    [get_attrval(value, E)].
-
-t_integer(E) ->
-    [get_attrval(value, E)].
-
-t_float(E) ->
-    [get_attrval(value, E)].
-
-t_nil() ->
-    ["[]"].
-
-t_list(Es) ->
-    ["["] ++ t_utype(get_elem(type, Es)) ++ ["]"].
-
-t_tuple(Es) ->
-    ["{"] ++ seq(fun t_utype_elem/1, Es, ["}"]).
-
-t_fun(Es) ->
-    ["("] ++ seq(fun t_utype_elem/1, get_content(argtypes, Es),
-		 [") -> "] ++ t_utype(get_elem(type, Es))).
-
-t_abstype(Es) ->
-%    ([t_name(get_elem(qualifiedName, Es)), "("]
-%     ++ seq(fun t_type_elem/1, get_elem(type, Es), [")"])).
-    case split_at_colon(t_name(get_elem(erlangName, Es)),[]) of
-	{Mod,Type} -> 
-	    [Type, "("] ++ 
-		seq(fun t_utype_elem/1, get_elem(type, Es), [")"]) ++ 
-		[" (see module ", Mod, ")"];
-	Type ->
-	    [Type, "("] ++ 
-		seq(fun t_utype_elem/1, get_elem(type, Es), [")"])
-    end.
-
-%% Split at one colon, but not at two (or more)
-split_at_colon([$:,$:|_]=Rest,Acc) ->
-    lists:reverse(Acc)++Rest;
-split_at_colon([$:|Type],Acc) ->
-    {lists:reverse(Acc),Type};
-split_at_colon([Char|Rest],Acc) ->
-    split_at_colon(Rest,[Char|Acc]);
-split_at_colon([],Acc) ->
-    lists:reverse(Acc).
-
-% t_par(Es) ->
-%     T = t_type(get_content(type, Es)),
-%     case get_elem(variable, Es) of
-% 	[] -> T;
-% 	[V0] -> case t_variable(V0) of
-% 		   T -> T;
-% 		   V -> V ++ ["::"] ++ T
-% 	       end
-%     end.
-
-% t_par_elem(#xmlElement{content = Es}) -> t_par(Es).
-
-t_union(Es) ->
-    seq(fun t_utype_elem/1, Es, " | ", []).
-
-seq(F, Es) ->
-    seq(F, Es, []).
-
-seq(F, Es, Tail) ->
-    seq(F, Es, ", ", Tail).
-
-seq(F, [E], _Sep, Tail) ->
-    F(E) ++ Tail;
-seq(F, [E | Es], Sep, Tail) ->
-    F(E) ++ [Sep] ++ seq(F, Es, Sep, Tail);
-seq(_F, [], _Sep, Tail) ->
-    Tail.
-
-get_elem(Name, [#xmlElement{name = Name} = E | Es]) ->
-    [E | get_elem(Name, Es)];
-get_elem(Name, [_ | Es]) ->
-    get_elem(Name, Es);
-get_elem(_, []) ->
-    [].
-
-get_attr(Name, [#xmlAttribute{name = Name} = A | As]) ->
-    [A | get_attr(Name, As)];
-get_attr(Name, [_ | As]) ->
-    get_attr(Name, As);
-get_attr(_, []) ->
-    [].
-
-get_attrval(Name, #xmlElement{attributes = As}) ->
-    case get_attr(Name, As) of
-	[#xmlAttribute{value = V}] ->
-	    V;
-	[] -> ""
-    end.
-
-get_content(Name, Es) ->
-    case get_elem(Name, Es) of
-	[#xmlElement{content = Es1}] ->
-	    Es1;
-	[] -> []
-    end.
-
-get_text(Name, Es) ->
-    case get_content(Name, Es) of
-	[#xmlText{value = Text}] ->
-	    Text;
-	[] -> ""
-    end.
-
-% local_label(R) ->
-%     "#" ++ R.
-
-xml(Title, CSS, Body) ->
-    {html, [?NL,
-	    {head, [?NL,
-		    {title, [Title]},
-		    ?NL] ++ CSS},
-	    ?NL,
-	    {body, [{bgcolor, "white"}], Body},
-	    ?NL]
-    }.
-
-%% ---------------------------------------------------------------------
-
- type(E) ->
-     type(E, []).
-
-% type(E, Ds) ->
-%     xmerl:export_simple_content(t_utype_elem(E) ++ local_defs(Ds),
-% 				?HTML_EXPORT).
- type(E, Ds) ->
-     xmerl:export_simple_content(t_utype_elem(E) ++ local_defs(Ds),
- 				?SGML_EXPORT).
-
-overview(E=#xmlElement{name = overview, content = Es}, Options) ->
-    Opts = init_opts(E, Options),
-    Title = get_text(title, Es),
-    Desc = get_content(description, Es),
-%    ShortDesc = get_content(briefDescription, Desc),
-    FullDesc = get_content(fullDescription, Desc),
-    Body = ([?NL, {h1, [Title]}, ?NL]
-%	    ++ ShortDesc
-	    ++ copyright(Es)
-	    ++ version(Es)
-	    ++ since(Es)
-	    ++ deprecated(Es, "application")
-	    ++ authors(Es)
-	    ++ references(Es)
-	    ++ sees(Es)
-	    ++ FullDesc),
-    XML = xml(Title, stylesheet(Opts), Body),
-    xmerl:export_simple([XML], ?SGML_EXPORT, []).
diff --git a/lib/edoc/vsn.mk b/lib/edoc/vsn.mk
index 065944ccef..2f6d469536 100644
--- a/lib/edoc/vsn.mk
+++ b/lib/edoc/vsn.mk
@@ -1 +1 @@
-EDOC_VSN = 0.9.1
+EDOC_VSN = 0.9.2
diff --git a/lib/eldap/doc/src/Makefile b/lib/eldap/doc/src/Makefile
index ac869e446f..aff1da4a9a 100644
--- a/lib/eldap/doc/src/Makefile
+++ b/lib/eldap/doc/src/Makefile
@@ -37,7 +37,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
 XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = eldap.xml
 
-XML_PART_FILES = release_notes.xml usersguide.xml
+XML_PART_FILES = usersguide.xml
 XML_CHAPTER_FILES = notes.xml
 
 BOOK_FILES = book.xml
diff --git a/lib/eldap/doc/src/fascicules.xml b/lib/eldap/doc/src/fascicules.xml
deleted file mode 100644
index cbc266cd30..0000000000
--- a/lib/eldap/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="usersguide" href="usersguide_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="release_notes" href="release_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/eldap/doc/src/note.gif b/lib/eldap/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/eldap/doc/src/note.gif
+++ /dev/null
diff --git a/lib/eldap/doc/src/notes.xml b/lib/eldap/doc/src/notes.xml
index 7aad745f67..8b066671ee 100644
--- a/lib/eldap/doc/src/notes.xml
+++ b/lib/eldap/doc/src/notes.xml
@@ -31,6 +31,21 @@
   </header>
   <p>This document describes the changes made to the Eldap application.</p>
 
+<section><title>Eldap 1.2.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Eldap 1.2.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/eldap/doc/src/warning.gif b/lib/eldap/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/eldap/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/eldap/vsn.mk b/lib/eldap/vsn.mk
index 721387d97d..1636b6bb6d 100644
--- a/lib/eldap/vsn.mk
+++ b/lib/eldap/vsn.mk
@@ -1 +1 @@
-ELDAP_VSN = 1.2.2
+ELDAP_VSN = 1.2.3
diff --git a/lib/erl_docgen/doc/src/fasc_dtds.xml b/lib/erl_docgen/doc/src/fasc_dtds.xml
deleted file mode 100644
index 390ae6c5d1..0000000000
--- a/lib/erl_docgen/doc/src/fasc_dtds.xml
+++ /dev/null
@@ -1,116 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE chapter SYSTEM "chapter.dtd">
-
-<chapter>
-  <header>
-    <copyright>
-      <year>2007</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Fascicules DTDs</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-    <file>fasc_dtds.xml</file>
-  </header>
-
-  <section>
-    <title>The fascicules DTD</title>
-
-    <p>The <c>fascicules</c> DTD is a special kind of DTD which can be
-      used to specify the different parts of the documentation, and
-      which one of those should be shown as default.</p>
-
-    <p>Example:</p>
-
-    <pre><![CDATA[
-<?xml version="1.0" encoding="latin1" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-</fascicules>
-    ]]></pre>
-
-    <p>In the example, it is specified that the documentation for this
-      application consists of three parts: User's Guide, where
-      the "cover page" (with the two frames) is located in
-      <c>part_frame.html</c>, Reference Manual with the cover page
-      <c>ref_man_frame.html</c> and Release Notes with the cover page
-      <c>part_notes_frame.html</c>.</p>
-
-    <p>As a result, at the top of the left frame in the generated HTML
-      documentation, there will be corresponding links to User's Guide,
-      Reference Manual and Release Notes.</p>
-
-    <p>The attribute <c>entry="yes"</c> specifies that it is
-      the Reference Manual which should be shown as default. This means
-      that when generating the HTML files, <c>application_frame.html</c>
-      will be copied to <c>index.html</c>.</p>
-
-    <note>
-      <p>DocBuilder assumes that the XML file written according to
-	the <c>fascicules</c> DTD is called <c>fascicules.xml</c>.</p>
-    </note>
-
-    <p>This file is optional. If it does not exist, there are no links
-      to other parts of the documentation (as they are not known) in
-      the left frame, and no <c>index.html</c> is created.</p>
-  </section>
-
-  <section>
-    <marker id="fasciculesTAG"></marker>
-    <title>&lt;fascicules&gt;</title>
-
-    <p>Top level tag for the <c>fascicules</c> DTD.</p>
-
-    <p>Contains one or more
-      <seealso marker="#fasciculeTAG">&lt;fascicule&gt;</seealso>.</p>
-  </section>
-
-  <section>
-    <marker id="fasciculeTAG"></marker>
-    <title>&lt;fascicule&gt;</title>
-
-    <p>Specifies properties for one "part" of the documentation for an
-      application.</p>
-
-    <p>Contains plain text, the name of this part.</p>
-
-    <p>The <c>file</c> attribute should specify the file name for
-      the corresponding <c>part</c> or <c>application</c>, without
-      the <c>.xml</c> extension.</p>
-
-    <p>The <c>href</c> attribute should specify the file name for
-      the corresponding HTML cover page file, without the <c>.html</c>
-      extension.</p>
-
-    <p>The optional <c>entry="yes"|"no"</c> attribute specifies if
-      the HTML cover page should be copied to <c>index.html</c> or
-      not. Default is <c>"no"</c>.</p>
-  </section>
-</chapter>
-
diff --git a/lib/erl_docgen/doc/src/fascicules.xml b/lib/erl_docgen/doc/src/fascicules.xml
deleted file mode 100644
index 154c8a3b6d..0000000000
--- a/lib/erl_docgen/doc/src/fascicules.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-</fascicules>
-
diff --git a/lib/erl_docgen/doc/src/notes.xml b/lib/erl_docgen/doc/src/notes.xml
index 59c65665d4..2652b4b0c8 100644
--- a/lib/erl_docgen/doc/src/notes.xml
+++ b/lib/erl_docgen/doc/src/notes.xml
@@ -31,7 +31,26 @@
   </header>
   <p>This document describes the changes made to the <em>erl_docgen</em> application.</p>
 
-  <section><title>Erl_Docgen 0.7.1</title>
+  <section><title>Erl_Docgen 0.7.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> The style for code, warning and note tags in the pdf
+	    have been changed so they look like the html version.
+	    <br/> The spacing around code blocks have been changed
+	    for both html and pdf so it's the same regardless if the
+	    user have a newline after the start tag (or before the
+	    end tag) or not. </p>
+          <p>
+	    Own Id: OTP-14674</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Erl_Docgen 0.7.1</title>
 
     <section><title>Improvements and New Features</title>
       <list>
diff --git a/lib/erl_docgen/priv/dtd/erlref.dtd b/lib/erl_docgen/priv/dtd/erlref.dtd
index 615b88b61a..78d6771f52 100644
--- a/lib/erl_docgen/priv/dtd/erlref.dtd
+++ b/lib/erl_docgen/priv/dtd/erlref.dtd
@@ -33,4 +33,5 @@
 <!ATTLIST name                 name CDATA #IMPLIED
                                arity CDATA #IMPLIED
 	                       clause_i CDATA #IMPLIED
+                               anchor CDATA #IMPLIED
                                n_vars CDATA #IMPLIED>
diff --git a/lib/erl_docgen/priv/xsl/db_funcs.xsl b/lib/erl_docgen/priv/xsl/db_funcs.xsl
new file mode 100644
index 0000000000..8178ce44fb
--- /dev/null
+++ b/lib/erl_docgen/priv/xsl/db_funcs.xsl
@@ -0,0 +1,136 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     #
+     # %CopyrightBegin%
+     #
+     # Copyright Ericsson AB 2009-2017. All Rights Reserved.
+     #
+     # Licensed under the Apache License, Version 2.0 (the "License");
+     # you may not use this file except in compliance with the License.
+     # You may obtain a copy of the License at
+     #
+     #     http://www.apache.org/licenses/LICENSE-2.0
+     #
+     # Unless required by applicable law or agreed to in writing, software
+     # distributed under the License is distributed on an "AS IS" BASIS,
+     # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     # See the License for the specific language governing permissions and
+     # limitations under the License.
+     #
+     # %CopyrightEnd%
+
+     -->
+<xsl:stylesheet version="1.0"
+  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+  xmlns:erl="http://erlang.org"
+  xmlns:func="http://exslt.org/functions"
+  extension-element-prefixes="func"
+  xmlns:fo="http://www.w3.org/1999/XSL/Format"
+  xmlns:fn="http://www.w3.org/2005/02/xpath-functions">
+
+  <!-- Used from code template to trim the newline/cr after the tag
+       and spaces/tabs between them
+  -->
+  <xsl:variable name="newlinechars" select="'&#10;&#13;'" />
+  <xsl:variable name="spacechars" select="'&#09; '" />
+
+  <func:function name="erl:code_trim">
+    <xsl:param name="string" />
+
+    <xsl:variable name="leftresult" select="erl:code_ltrim($string, $string)"/>
+    <xsl:variable name="result" select="erl:code_rtrim($leftresult, $leftresult)"/>
+
+    <func:result select="$result"/>
+  </func:function>
+
+  <func:function name="erl:code_rtrim">
+    <xsl:param name="string" />
+    <xsl:param name="origstring" />
+    
+    <xsl:variable name="length" select="string-length($string)" />
+
+    <xsl:variable name="result">
+      <xsl:if test="$length &gt; 0">
+	<xsl:choose>
+          <xsl:when test="contains($spacechars, substring($string, $length, 1))">
+	    <xsl:value-of select="erl:code_rtrim(substring($string, 1, $length - 1), $origstring)" />
+          </xsl:when>
+          <xsl:when test="contains($newlinechars, substring($string, $length, 1))">
+	    <xsl:value-of select="erl:code_rtrim_1(substring($string, 1, $length - 1))" />
+          </xsl:when>	
+          <xsl:otherwise>
+            <xsl:value-of select="$origstring" />
+          </xsl:otherwise>
+	</xsl:choose>
+    </xsl:if>
+    </xsl:variable>
+
+    <func:result select="$result" />
+  </func:function>
+  
+  <func:function name="erl:code_rtrim_1">
+    <xsl:param name="string" />
+    
+    <xsl:variable name="length" select="string-length($string)" />
+
+    <xsl:variable name="result">
+      <xsl:if test="$length &gt; 0">
+	<xsl:choose>
+          <xsl:when test="contains($newlinechars, substring($string, $length, 1))">
+	    <xsl:value-of select="erl:code_rtrim_1(substring($string, 1, $length - 1))" />
+          </xsl:when>	
+          <xsl:otherwise>
+	    <xsl:value-of select="erl:code_rtrim($string, $string)" />	    
+            <!--xsl:value-of select="$string" /-->
+          </xsl:otherwise>
+	</xsl:choose>
+      </xsl:if>
+    </xsl:variable>
+
+    <func:result select="$result" />
+  </func:function>
+  
+  <func:function name="erl:code_ltrim">
+    <xsl:param name="string" />
+    <xsl:param name="origstring" />
+
+    <xsl:variable name="result">
+      <xsl:if test="string-length($string) &gt; 0">
+	<xsl:choose>
+          <xsl:when test="contains($spacechars, substring($string, 1, 1))">
+	    <xsl:value-of select="erl:code_ltrim(substring($string, 2), $origstring)" />
+          </xsl:when>
+          <xsl:when test="contains($newlinechars, substring($string, 1, 1))">
+	    <xsl:value-of select="erl:code_ltrim_1(substring($string, 2))" />
+          </xsl:when>	
+          <xsl:otherwise>
+            <xsl:value-of select="$origstring" />
+          </xsl:otherwise>
+	</xsl:choose>
+      </xsl:if>
+    </xsl:variable>
+
+    <func:result select="$result" />
+  </func:function>
+  
+  <func:function name="erl:code_ltrim_1">
+    <xsl:param name="string" />
+
+    <xsl:variable name="result">
+      <xsl:if test="string-length($string) &gt; 0">
+	<xsl:choose>
+          <xsl:when test="contains($newlinechars, substring($string, 1, 1))">
+	    <xsl:value-of select="erl:code_ltrim_1(substring($string, 2))" />
+          </xsl:when>	
+          <xsl:otherwise>
+	    <xsl:value-of select="erl:code_ltrim($string, $string)" />
+            <!--xsl:value-of select="$string" /-->
+          </xsl:otherwise>
+	</xsl:choose>
+      </xsl:if>
+    </xsl:variable>
+    
+    <func:result select="$result" />
+  </func:function>
+
+</xsl:stylesheet>
diff --git a/lib/erl_docgen/priv/xsl/db_html.xsl b/lib/erl_docgen/priv/xsl/db_html.xsl
index a5e277aece..5b7eae4f73 100644
--- a/lib/erl_docgen/priv/xsl/db_html.xsl
+++ b/lib/erl_docgen/priv/xsl/db_html.xsl
@@ -30,6 +30,7 @@
   xmlns:fn="http://www.w3.org/2005/02/xpath-functions">
 
   <xsl:include href="db_html_params.xsl"/>
+  <xsl:include href="db_funcs.xsl"/>
 
   <func:function name="erl:flip_first_char">
     <xsl:param name="in"/>
@@ -171,6 +172,7 @@
   <xsl:template name="spec_name">
     <xsl:variable name="name" select="@name"/>
     <xsl:variable name="arity" select="@arity"/>
+    <xsl:variable name="anchor" select="@anchor"/>
     <xsl:variable name="spec0">
       <xsl:call-template name="find_spec"/>
     </xsl:variable>
@@ -197,6 +199,11 @@
 	  </xsl:otherwise>
         </xsl:choose>
 
+	<!-- Insert an anchor for "anchor" attribute -->
+	<xsl:if test="string-length($anchor) > 0">
+	      <a name="{$anchor}"></a>
+	</xsl:if>
+
         <xsl:variable name="global_types" select="ancestor::erlref/datatypes"/>
 	<xsl:variable name="local_types"
 		      select="../type[string-length(@name) > 0]"/>
@@ -1132,7 +1139,14 @@
     <xsl:variable name="codenum">
       <xsl:number level="any" from="chapter" count="code"/>
     </xsl:variable>
-    <div class="example"><pre><xsl:apply-templates/></pre></div>
+      <xsl:choose> 
+	<xsl:when test="not(descendant::anno)">
+ 	   <div class="example"><pre><xsl:value-of select="erl:code_trim(text())"/></pre></div>
+ 	</xsl:when>
+	<xsl:otherwise>    
+	   <div class="example"><pre><xsl:apply-templates/></pre></div>
+	</xsl:otherwise>
+      </xsl:choose>	
   </xsl:template>
 
   <!-- Pre -->
diff --git a/lib/erl_docgen/priv/xsl/db_pdf.xsl b/lib/erl_docgen/priv/xsl/db_pdf.xsl
index 99263847fb..46de66bcd8 100644
--- a/lib/erl_docgen/priv/xsl/db_pdf.xsl
+++ b/lib/erl_docgen/priv/xsl/db_pdf.xsl
@@ -23,12 +23,16 @@
 <xsl:stylesheet version="1.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   xmlns:exsl="http://exslt.org/common"
-  extension-element-prefixes="exsl"
-  xmlns:fo="http://www.w3.org/1999/XSL/Format">
+  xmlns:func="http://exslt.org/functions"
+  xmlns:erl="http://erlang.org"
+  extension-element-prefixes="exsl func"
+  xmlns:fo="http://www.w3.org/1999/XSL/Format"
+  xmlns:fn="http://www.w3.org/2005/02/xpath-functions">
 
   <xsl:output method="xml" indent="yes"/>
 
   <xsl:include href="db_pdf_params.xsl"/>
+  <xsl:include href="db_funcs.xsl"/>
 
   <!-- Start of Dialyzer type/spec tags.
        See also the templates matching "name" and "seealso" as well as
@@ -687,7 +691,7 @@
         <fo:block xsl:use-attribute-sets="cover.inner.copyrightnotice">
           <xsl:value-of select="/book/header/legalnotice"/>
 
-        <!--   
+        <!--
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
@@ -744,12 +748,12 @@
         <fo:bookmark internal-destination="{generate-id(header/title)}"
           starting-state="hide">
           <fo:bookmark-title><xsl:value-of select="header/title"/></fo:bookmark-title>
-          
+
           <xsl:call-template name="bookmarks2">
             <xsl:with-param name="entries"
               select="chapter[header/title]"/>
           </xsl:call-template>
-          
+
         </fo:bookmark>
       </xsl:for-each>
     </xsl:if>
@@ -1122,52 +1126,60 @@
   <!-- Note -->
   <xsl:template match="note">
     <xsl:param name="partnum"/>
-    <fo:block xsl:use-attribute-sets="note">
-        <fo:block xsl:use-attribute-sets="note-warning-title">
-            <xsl:text>Note:</xsl:text>
-        </fo:block>
-      <xsl:apply-templates>
-        <xsl:with-param name="partnum" select="$partnum"/>
-      </xsl:apply-templates>
+    <fo:block xsl:use-attribute-sets="note-warning">
+      <fo:block xsl:use-attribute-sets="note-title">
+	<xsl:text>Note:</xsl:text>
+      </fo:block>
+      <fo:block xsl:use-attribute-sets="note-warning-content">
+	<xsl:apply-templates>
+          <xsl:with-param name="partnum" select="$partnum"/>
+	</xsl:apply-templates>
+      </fo:block>
     </fo:block>
   </xsl:template>
 
   <!-- Warning -->
   <xsl:template match="warning">
     <xsl:param name="partnum"/>
-    <fo:block xsl:use-attribute-sets="warning">
-        <fo:block xsl:use-attribute-sets="note-warning-title">
-            <xsl:text>Warning:</xsl:text>
-        </fo:block>
-      <xsl:apply-templates>
-        <xsl:with-param name="partnum" select="$partnum"/>
-      </xsl:apply-templates>
+    <fo:block xsl:use-attribute-sets="note-warning">
+      <fo:block xsl:use-attribute-sets="warning-title">
+	<xsl:text>Warning:</xsl:text>
+      </fo:block>
+      <fo:block xsl:use-attribute-sets="note-warning-content">
+	<xsl:apply-templates>
+          <xsl:with-param name="partnum" select="$partnum"/>
+	</xsl:apply-templates>
+      </fo:block>
     </fo:block>
   </xsl:template>
 
   <!-- Do -->
   <xsl:template match="do">
     <xsl:param name="partnum"/>
-    <fo:block xsl:use-attribute-sets="do">
-        <fo:block xsl:use-attribute-sets="note-warning-title">
-            <xsl:text>Do:</xsl:text>
-        </fo:block>
-      <xsl:apply-templates>
-        <xsl:with-param name="partnum" select="$partnum"/>
-      </xsl:apply-templates>
+    <fo:block xsl:use-attribute-sets="note-warning">
+      <fo:block xsl:use-attribute-sets="note-title">
+	<xsl:text>Do:</xsl:text>
+      </fo:block>
+      <fo:block xsl:use-attribute-sets="note-warning-content">
+	<xsl:apply-templates>
+          <xsl:with-param name="partnum" select="$partnum"/>
+	</xsl:apply-templates>
+      </fo:block>
     </fo:block>
   </xsl:template>
 
   <!-- Dont -->
   <xsl:template match="dont">
     <xsl:param name="partnum"/>
-    <fo:block xsl:use-attribute-sets="dont">
-        <fo:block xsl:use-attribute-sets="note-warning-title">
-            <xsl:text>Don't:</xsl:text>
-        </fo:block>
-      <xsl:apply-templates>
-        <xsl:with-param name="partnum" select="$partnum"/>
-      </xsl:apply-templates>
+    <fo:block xsl:use-attribute-sets="note-warning">
+      <fo:block xsl:use-attribute-sets="warning-title">
+	<xsl:text>Don't:</xsl:text>
+      </fo:block>
+      <fo:block xsl:use-attribute-sets="note-warning-content">
+	<xsl:apply-templates>
+          <xsl:with-param name="partnum" select="$partnum"/>
+	</xsl:apply-templates>
+      </fo:block>
     </fo:block>
   </xsl:template>
 
@@ -1226,7 +1238,14 @@
     </xsl:variable>
 
     <fo:block xsl:use-attribute-sets="code">
-      <xsl:apply-templates select="text()"/>
+      <xsl:choose> 
+	<xsl:when test="not(descendant::anno)">
+	  <xsl:value-of select="erl:code_trim(text())"/>
+	</xsl:when>
+	<xsl:otherwise>
+	  <xsl:apply-templates/>
+	</xsl:otherwise>
+      </xsl:choose>	
     </fo:block>
 
     <xsl:if test="@caption">
diff --git a/lib/erl_docgen/priv/xsl/db_pdf_params.xsl b/lib/erl_docgen/priv/xsl/db_pdf_params.xsl
index d9a150d2d9..99da29c2ac 100644
--- a/lib/erl_docgen/priv/xsl/db_pdf_params.xsl
+++ b/lib/erl_docgen/priv/xsl/db_pdf_params.xsl
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!--      
+<!--
      #
      # %CopyrightBegin%
      #
-     # Copyright Ericsson AB 2009-2016. All Rights Reserved.
+     # Copyright Ericsson AB 2009-2017. All Rights Reserved.
      #
      # Licensed under the Apache License, Version 2.0 (the "License");
      # you may not use this file except in compliance with the License.
@@ -18,7 +18,7 @@
      # limitations under the License.
      #
      # %CopyrightEnd%
-     
+
      -->
 <xsl:stylesheet version="1.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
@@ -45,7 +45,7 @@
   <xsl:param name="page-width">210mm</xsl:param>
 
   <!-- Paper size: US Letter (279x216 mm) -->
-  <!-- 
+  <!--
   <xsl:param name="page-height">11in</xsl:param>
   <xsl:param name="page-width">8.5in</xsl:param>
   -->
@@ -248,86 +248,82 @@
   </xsl:attribute-set>
 
   <xsl:attribute-set name="code">
-    <xsl:attribute name="background-color">#e0e0ff</xsl:attribute>
+    <xsl:attribute name="background-color">#f1f3f5</xsl:attribute>
+    <xsl:attribute name="border-style">solid</xsl:attribute>
+    <xsl:attribute name="border-color">#dee2e6</xsl:attribute><!-- dee2e6-->
+    <xsl:attribute name="border-width">0.3mm</xsl:attribute>
     <xsl:attribute name="font-family">DejaVuSansMono, monospace</xsl:attribute>
     <xsl:attribute name="font-size">0.8em</xsl:attribute>
-    <xsl:attribute name="keep-together.within-page">auto</xsl:attribute>
+    <xsl:attribute name="keep-together.within-page">3</xsl:attribute>
     <xsl:attribute name="linefeed-treatment">preserve</xsl:attribute>
-    <xsl:attribute name="padding-before">0em</xsl:attribute>
-    <xsl:attribute name="padding-after">1em</xsl:attribute>
-    <xsl:attribute name="space-after">1em</xsl:attribute>
-    <xsl:attribute name="space-before">2em</xsl:attribute>
-    <xsl:attribute name="margin-left">0.5em</xsl:attribute>
-    <xsl:attribute name="margin-right">0.5em</xsl:attribute>
+    <xsl:attribute name="padding-before">1.5mm</xsl:attribute>
+    <xsl:attribute name="padding-after">1mm</xsl:attribute>
+    <xsl:attribute name="padding-left">1mm</xsl:attribute>
+    <xsl:attribute name="padding-right">1mm</xsl:attribute>
+    <xsl:attribute name="margin-left">1mm</xsl:attribute>
+    <xsl:attribute name="margin-right">1mm</xsl:attribute>
     <xsl:attribute name="white-space-collapse">false</xsl:attribute>
     <xsl:attribute name="white-space-treatment">preserve</xsl:attribute>
     <xsl:attribute name="wrap-option">no-wrap</xsl:attribute>
+    <xsl:attribute name="space-after">0.5em</xsl:attribute>
+    <xsl:attribute name="space-before">0.5em</xsl:attribute>
   </xsl:attribute-set>
 
-
-
   <xsl:attribute-set name="toc.level1">
     <xsl:attribute name="space-before">1em</xsl:attribute>
-  </xsl:attribute-set> 
-
-<xsl:attribute-set name="note">
-    <xsl:attribute name="background-color">#d0fed0</xsl:attribute>
-    <xsl:attribute name="space-after">1em</xsl:attribute>
-    <xsl:attribute name="space-before">2em</xsl:attribute>
-    <xsl:attribute name="text-align">justify</xsl:attribute>
-    <xsl:attribute name="padding-before">1em</xsl:attribute>
-    <xsl:attribute name="padding-after">0.3em</xsl:attribute>
-    <xsl:attribute name="padding-left">0.5em</xsl:attribute>
-    <xsl:attribute name="padding-right">0.5em</xsl:attribute>
-    <xsl:attribute name="margin-left">0.5em</xsl:attribute>
-    <xsl:attribute name="margin-right">0.5em</xsl:attribute>
-    <xsl:attribute name="keep-together.within-page">always</xsl:attribute>
   </xsl:attribute-set>
 
-<xsl:attribute-set name="warning">
-  <xsl:attribute name="background-color">#ffd6d6</xsl:attribute> 
-    <xsl:attribute name="space-after">1em</xsl:attribute>
-    <xsl:attribute name="space-before">2em</xsl:attribute>
-    <xsl:attribute name="text-align">justify</xsl:attribute>
-    <xsl:attribute name="padding-before">1em</xsl:attribute>
-    <xsl:attribute name="padding-after">0.3em</xsl:attribute>
-    <xsl:attribute name="padding-left">0.5em</xsl:attribute>
-    <xsl:attribute name="padding-right">0.5em</xsl:attribute>
-    <xsl:attribute name="margin-left">0.5em</xsl:attribute>
-    <xsl:attribute name="margin-right">0.5em</xsl:attribute>
-    <xsl:attribute name="keep-together.within-page">always</xsl:attribute>
+  <xsl:attribute-set name="note-title">
+    <xsl:attribute name="space-before">0.5em</xsl:attribute>
+    <xsl:attribute name="border-style">solid</xsl:attribute>
+    <xsl:attribute name="border-bottom-width">0mm</xsl:attribute>
+    <xsl:attribute name="border-color">#495057</xsl:attribute>
+    <xsl:attribute name="background-color">#2b8a3e</xsl:attribute>
+    <xsl:attribute name="font-weight">bold</xsl:attribute>
+    <xsl:attribute name="color">#fefefe</xsl:attribute>
+    <xsl:attribute name="padding-before">1mm</xsl:attribute>
+    <xsl:attribute name="padding-after">0.5mm</xsl:attribute>
+    <xsl:attribute name="padding-left">1mm</xsl:attribute>
+    <xsl:attribute name="padding-right">1mm</xsl:attribute>
+    <xsl:attribute name="margin-left">1mm</xsl:attribute>
+    <xsl:attribute name="margin-right">1mm</xsl:attribute>
+    <xsl:attribute name="font-size">1.33em</xsl:attribute>
   </xsl:attribute-set>
 
-<xsl:attribute-set name="do">
-    <xsl:attribute name="background-color">#d0fed0</xsl:attribute>
-    <xsl:attribute name="space-after">1em</xsl:attribute>
-    <xsl:attribute name="space-before">2em</xsl:attribute>
-    <xsl:attribute name="text-align">justify</xsl:attribute>
-    <xsl:attribute name="padding-before">1em</xsl:attribute>
-    <xsl:attribute name="padding-after">0.3em</xsl:attribute>
-    <xsl:attribute name="padding-left">0.5em</xsl:attribute>
-    <xsl:attribute name="padding-right">0.5em</xsl:attribute>
-    <xsl:attribute name="margin-left">0.5em</xsl:attribute>
-    <xsl:attribute name="margin-right">0.5em</xsl:attribute>
+  <xsl:attribute-set name="note-warning">
     <xsl:attribute name="keep-together.within-page">always</xsl:attribute>
   </xsl:attribute-set>
 
-<xsl:attribute-set name="dont">
-  <xsl:attribute name="background-color">#ffd6d6</xsl:attribute> 
-    <xsl:attribute name="space-after">1em</xsl:attribute>
-    <xsl:attribute name="space-before">2em</xsl:attribute>
-    <xsl:attribute name="text-align">justify</xsl:attribute>
-    <xsl:attribute name="padding-before">1em</xsl:attribute>
-    <xsl:attribute name="padding-after">0.3em</xsl:attribute>
-    <xsl:attribute name="padding-left">0.5em</xsl:attribute>
-    <xsl:attribute name="padding-right">0.5em</xsl:attribute>
-    <xsl:attribute name="margin-left">0.5em</xsl:attribute>
-    <xsl:attribute name="margin-right">0.5em</xsl:attribute>
-    <xsl:attribute name="keep-together.within-page">always</xsl:attribute>
+  <xsl:attribute-set name="warning-title">
+    <xsl:attribute name="space-before">0.5em</xsl:attribute>
+    <xsl:attribute name="border-style">solid</xsl:attribute>
+    <xsl:attribute name="border-bottom-width">0mm</xsl:attribute>
+    <xsl:attribute name="border-color">#495057</xsl:attribute>
+    <xsl:attribute name="background-color">#c92a2a</xsl:attribute>
+    <xsl:attribute name="font-weight">bold</xsl:attribute>
+    <xsl:attribute name="color">#fefefe</xsl:attribute>
+    <xsl:attribute name="padding-before">1mm</xsl:attribute>
+    <xsl:attribute name="padding-after">0.5mm</xsl:attribute>
+    <xsl:attribute name="padding-left">1mm</xsl:attribute>
+    <xsl:attribute name="padding-right">1mm</xsl:attribute>
+    <xsl:attribute name="margin-left">1mm</xsl:attribute>
+    <xsl:attribute name="margin-right">1mm</xsl:attribute>
+    <xsl:attribute name="font-size">1.33em</xsl:attribute>
   </xsl:attribute-set>
 
-  <xsl:attribute-set name="note-warning-title">
-    <xsl:attribute name="font-size">1.33em</xsl:attribute>
+  <xsl:attribute-set name="note-warning-content">
+    <xsl:attribute name="space-after">0.5em</xsl:attribute>
+    <xsl:attribute name="border-style">solid</xsl:attribute>
+    <xsl:attribute name="border-top-width">0mm</xsl:attribute>
+    <xsl:attribute name="border-color">#495057</xsl:attribute>
+    <xsl:attribute name="background-color">#f8f9fa</xsl:attribute>
+    <xsl:attribute name="text-align">justify</xsl:attribute>
+    <xsl:attribute name="padding-before">1mm</xsl:attribute>
+    <xsl:attribute name="padding-after">0.5mm</xsl:attribute>
+    <xsl:attribute name="padding-left">1mm</xsl:attribute>
+    <xsl:attribute name="padding-right">1mm</xsl:attribute>
+    <xsl:attribute name="margin-left">1mm</xsl:attribute>
+    <xsl:attribute name="margin-right">1mm</xsl:attribute>
   </xsl:attribute-set>
 
   <xsl:attribute-set name="module-header">
@@ -354,7 +350,7 @@
     <xsl:attribute name="keep-with-next.within-page">always</xsl:attribute>
     <xsl:attribute name="space-after">0.25em</xsl:attribute>
     <!-- xsl:attribute name="space-before">1.5em</xsl:attribute -->
-  </xsl:attribute-set> 
+  </xsl:attribute-set>
 
   <xsl:attribute-set name="type-listblock">
     <xsl:attribute name="provisional-distance-between-starts">1.8em</xsl:attribute>
diff --git a/lib/erl_docgen/src/docgen_edoc_xml_cb.erl b/lib/erl_docgen/src/docgen_edoc_xml_cb.erl
index 67e6e33c93..b065c18cda 100644
--- a/lib/erl_docgen/src/docgen_edoc_xml_cb.erl
+++ b/lib/erl_docgen/src/docgen_edoc_xml_cb.erl
@@ -489,6 +489,8 @@ otp_xmlify_a_href("#"++_ = Marker, Es0) -> % <seealso marker="#what">
     {Marker, Es0};
 otp_xmlify_a_href("http:"++_ = URL, Es0) -> % external URL
     {URL, Es0};
+otp_xmlify_a_href("https:"++_ = URL, Es0) -> % external URL
+    {URL, Es0};
 otp_xmlify_a_href("OTPROOT"++AppRef, Es0) -> % <.. marker="App:FileRef
     [AppS, "doc", FileRef1] = split(AppRef, "/"),
     FileRef = AppS++":"++otp_xmlify_a_fileref(FileRef1, AppS),
diff --git a/lib/erl_docgen/vsn.mk b/lib/erl_docgen/vsn.mk
index 17a7c483f4..95b2329ac5 100644
--- a/lib/erl_docgen/vsn.mk
+++ b/lib/erl_docgen/vsn.mk
@@ -1 +1 @@
-ERL_DOCGEN_VSN = 0.7.1
+ERL_DOCGEN_VSN = 0.7.2
diff --git a/lib/erl_interface/doc/src/Makefile b/lib/erl_interface/doc/src/Makefile
index 204a6051b2..8ef7e9648c 100644
--- a/lib/erl_interface/doc/src/Makefile
+++ b/lib/erl_interface/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 1998-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 1998-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 include $(ERL_TOP)/make/target.mk
@@ -36,7 +36,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
 # Target Specs
 # ----------------------------------------------------
 
-XML_REF1_FILES = erl_call.xml 
+XML_REF1_FILES = erl_call.xml
 XML_REF3_FILES = erl_connect.xml \
 	erl_error.xml \
 	erl_eterm.xml \
@@ -46,16 +46,14 @@ XML_REF3_FILES = erl_connect.xml \
 	erl_global.xml \
 	ei.xml \
 	ei_connect.xml \
-	registry.xml 
+	registry.xml
 
 BOOK_FILES = book.xml
-XML_APPLICATION_FILES = ref_man.xml 
+XML_APPLICATION_FILES = ref_man.xml
 #ref_man_ei.xml ref_man_erl_interface.xml
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml \
-	part_notes_history.xml
-XML_CHAPTER_FILES = ei_users_guide.xml notes.xml notes_history.xml
+	part.xml
+XML_CHAPTER_FILES = ei_users_guide.xml notes.xml
 
 XML_FILES = $(XML_REF1_FILES) $(XML_REF3_FILES) $(BOOK_FILES) \
 	 $(XML_APPLICATION_FILES) $(XML_PART_FILES) $(XML_CHAPTER_FILES)
@@ -66,7 +64,7 @@ HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
 
 INFO_FILE = ../../info
 
-GIF_FILES = 
+GIF_FILES =
 
 MAN1_FILES = $(XML_REF1_FILES:%.xml=$(MAN1DIR)/%.1)
 MAN3_FILES = $(XML_REF3_FILES:%.xml=$(MAN3DIR)/%.3)
@@ -76,9 +74,9 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -98,7 +96,7 @@ man: $(MAN1_FILES) $(MAN3_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 clean clean_docs clean_tex:
 	rm -rf $(HTMLDIR)/*
@@ -110,7 +108,7 @@ clean clean_docs clean_tex:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -127,4 +125,3 @@ release_docs_spec: docs
 
 
 release_spec:
-
diff --git a/lib/erl_interface/doc/src/note.gif b/lib/erl_interface/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/erl_interface/doc/src/note.gif
+++ /dev/null
diff --git a/lib/erl_interface/doc/src/notes.xml b/lib/erl_interface/doc/src/notes.xml
index ec20f3c67f..641a3de13f 100644
--- a/lib/erl_interface/doc/src/notes.xml
+++ b/lib/erl_interface/doc/src/notes.xml
@@ -31,6 +31,21 @@
   </header>
   <p>This document describes the changes made to the Erl_interface application.</p>
 
+<section><title>Erl_Interface 3.10.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Erl_Interface 3.10</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/erl_interface/doc/src/part_notes.xml b/lib/erl_interface/doc/src/part_notes.xml
deleted file mode 100644
index facdf821ee..0000000000
--- a/lib/erl_interface/doc/src/part_notes.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Erl_Interface Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p><em>Erl_Interface</em> is a C interface library for communication
-      with Erlang.</p>
-    <p>For information about older versions, see
-      <url href="part_notes_history_frame.html">Release Notes History</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/erl_interface/doc/src/part_notes_history.xml b/lib/erl_interface/doc/src/part_notes_history.xml
deleted file mode 100644
index 401fea4dd4..0000000000
--- a/lib/erl_interface/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2006</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Erl_Interface Release Notes History</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p><em>Erl_Interface</em> is a C interface library for communication
-      with Erlang.</p>
-  </description>
-  <xi:include href="notes_history.xml"/>
-</part>
-
diff --git a/lib/erl_interface/doc/src/warning.gif b/lib/erl_interface/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/erl_interface/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/erl_interface/src/Makefile b/lib/erl_interface/src/Makefile
index 31f34d4bba..135522397b 100644
--- a/lib/erl_interface/src/Makefile
+++ b/lib/erl_interface/src/Makefile
@@ -29,5 +29,5 @@ include $(ERL_TOP)/make/target.mk
 debug opt shared purify quantify purecov gcov:
 	$(make_verbose)$(MAKE) -f $(TARGET)/Makefile TYPE=$@
 
-clean depend docs release release_docs tests release_tests check:
+clean depend docs release release_docs tests release_tests check xmllint:
 	$(make_verbose)$(MAKE) -f $(TARGET)/Makefile $@
diff --git a/lib/erl_interface/src/Makefile.in b/lib/erl_interface/src/Makefile.in
index 4f393e952c..69b5b6003d 100644
--- a/lib/erl_interface/src/Makefile.in
+++ b/lib/erl_interface/src/Makefile.in
@@ -854,3 +854,5 @@ endif
 release_docs:
 
 release_tests:
+
+xmllint:
diff --git a/lib/erl_interface/test/ei_accept_SUITE.erl b/lib/erl_interface/test/ei_accept_SUITE.erl
index e06ee762d7..6676e73e21 100644
--- a/lib/erl_interface/test/ei_accept_SUITE.erl
+++ b/lib/erl_interface/test/ei_accept_SUITE.erl
@@ -25,7 +25,8 @@
 -include("ei_accept_SUITE_data/ei_accept_test_cases.hrl").
 
 -export([all/0, suite/0,
-         ei_accept/1, ei_threaded_accept/1]).
+         ei_accept/1, ei_threaded_accept/1,
+         monitor_ei_process/1]).
 
 -import(runner, [get_term/1,send_term/2]).
 
@@ -34,7 +35,8 @@ suite() ->
      {timetrap, {seconds, 30}}].
 
 all() -> 
-    [ei_accept, ei_threaded_accept].
+    [ei_accept, ei_threaded_accept,
+     monitor_ei_process].
 
 ei_accept(Config) when is_list(Config) ->
     P = runner:start(?interpret),
@@ -44,33 +46,32 @@ ei_accept(Config) when is_list(Config) ->
     io:format("Myname ~p ~n",  [Myname]),
     EINode = list_to_atom("c42@"++Myname),
     io:format("EINode ~p ~n",  [EINode]),
+
+    %% We take this opportunity to also test export-funs and bit-strings
+    %% with (ugly) tuple fallbacks.
+    %% Test both toward pending connection and established connection.
+    RealTerms = [<<1:1>>,     fun lists:map/2],
+    Fallbacks = [{<<128>>,1}, {lists,map}],
+
     Self = self(),
-    TermToSend= {call, Self, "Test"},
-    F= fun() ->
-               case waitfornode("c42",20) of
-                   true ->
-                       {any, EINode} ! TermToSend,
-                       Self ! sent_ok;
-                   false ->
-                       Self ! never_published
-               end,
-               ok
-       end,
-
-    spawn(F),
+    Funny = fun() -> hello end,
+    TermToSend = {call, Self, "Test", Funny, RealTerms},
+    TermToGet  = {call, Self, "Test", Funny, Fallbacks},
     Port = 6543,
-    {ok, Fd, _Node} = ei_accept(P, Port),
-    TermReceived= ei_receive(P, Fd),
-    io:format("Sent ~p received ~p ~n", [TermToSend, TermReceived]),
-    TermToSend= TermReceived,
-    receive
-        sent_ok ->
-            ok;
-        Unknown ->
-            io:format("~p ~n", [Unknown])
-    after 1000 ->
-              io:format("timeout ~n")
-    end,
+    {ok, ListenFd} = ei_publish(P, Port),
+    {any, EINode} ! TermToSend,
+
+    {ok, Fd, _Node} = ei_accept(P, ListenFd),
+    Got1 = ei_receive(P, Fd),
+
+    %% Send again, now without auto-connect
+    {any, EINode} ! TermToSend,
+    Got2 = ei_receive(P, Fd),
+
+    io:format("Sent ~p~nExp. ~p~nGot1 ~p~nGot2 ~p~n", [TermToSend, TermToGet, Got1, Got2]),
+    TermToGet = Got1,
+    TermToGet = Got2,
+
     runner:finish(P),
     ok.
 
@@ -87,6 +88,41 @@ ei_threaded_accept(Config) when is_list(Config) ->
     [receive I -> ok end || I <- lists:seq(0, N-1) ],
     ok.
 
+
+%% Test erlang:monitor toward erl_interface "processes"
+monitor_ei_process(Config) when is_list(Config) ->
+    P = runner:start(?interpret),
+    0 = ei_connect_init(P, 42, erlang:get_cookie(), 0),
+
+    Myname = hd(tl(string:tokens(atom_to_list(node()), "@"))),
+    io:format("Myname ~p ~n",  [Myname]),
+    EINode = list_to_atom("c42@"++Myname),
+    io:format("EINode ~p ~n",  [EINode]),
+
+    Self = self(),
+    Port = 6543,
+    {ok, ListenFd} = ei_publish(P, Port),
+    MRef1 = erlang:monitor(process, {any, EINode}),
+    {any, EINode} ! hello,
+
+    {ok, Fd, _Node} = ei_accept(P, ListenFd),
+    hello = ei_receive(P, Fd),
+
+    %% Again, now on an established connection.
+    MRef2 = erlang:monitor(process, {any, EINode}),
+    {any, EINode} ! hello,
+    hello = ei_receive(P, Fd),
+
+    ok = receive M -> M after 0 -> ok end,
+
+    runner:finish(P),
+
+    [{'DOWN', MRef1, process, {any, EINode}, noconnection},
+     {'DOWN', MRef2, process, {any, EINode}, noconnection}
+    ] = lists:sort(flush(2, 1000)),
+
+    ok.
+
 waitfornode(String,0) ->
     io:format("~s never published itself.~n",[String]),
     false;
@@ -137,8 +173,15 @@ ei_connect_init(P, Num, Cookie, Creation) ->
         {term,Int} when is_integer(Int) -> Int
     end.
 
-ei_accept(P, PortNo) ->
-    send_command(P, ei_accept, [PortNo]),
+ei_publish(P, PortNo) ->
+    send_command(P, ei_publish, [PortNo]),
+    case get_term(P) of
+        {term,{ListenFd, EpmdFd, _}} when ListenFd >= 0, EpmdFd >= 0 -> {ok, ListenFd};
+        {term,{_, _, Errno}} -> {error,Errno}
+    end.
+
+ei_accept(P, ListenFd) ->
+    send_command(P, ei_accept, [ListenFd]),
     case get_term(P) of
         {term,{Fd, _, Node}} when Fd >= 0 -> {ok, Fd, Node};
         {term,{_Fd, Errno, _Node}} -> {error,Errno}
@@ -151,3 +194,12 @@ ei_receive(P, Fd) ->
 
 send_command(P, Name, Args) ->
     runner:send_term(P, {Name,list_to_tuple(Args)}).
+
+flush(0, Timeout) ->
+    flush(1, Timeout div 10);
+flush(Expected, Timeout) ->
+    receive M ->
+            [M | flush(Expected-1, Timeout)]
+    after Timeout ->
+            []
+    end.
diff --git a/lib/erl_interface/test/ei_accept_SUITE_data/ei_accept_test.c b/lib/erl_interface/test/ei_accept_SUITE_data/ei_accept_test.c
index 7b81ee5491..2b62d7c3a4 100644
--- a/lib/erl_interface/test/ei_accept_SUITE_data/ei_accept_test.c
+++ b/lib/erl_interface/test/ei_accept_SUITE_data/ei_accept_test.c
@@ -43,6 +43,7 @@
 #include "ei_runner.h"
 
 static void cmd_ei_connect_init(char* buf, int len);
+static void cmd_ei_publish(char* buf, int len);
 static void cmd_ei_accept(char* buf, int len);
 static void cmd_ei_receive(char* buf, int len);
 static void cmd_ei_unpublish(char* buf, int len);
@@ -58,6 +59,7 @@ static struct {
     void (*func)(char* buf, int len);
 } commands[] = {
     "ei_connect_init",  3, cmd_ei_connect_init,
+    "ei_publish", 	1, cmd_ei_publish,
     "ei_accept", 	1, cmd_ei_accept,
     "ei_receive",  	1, cmd_ei_receive,
     "ei_unpublish",     0, cmd_ei_unpublish
@@ -149,11 +151,10 @@ static int my_listen(int port)
     return listen_fd;
 }
 
-static void cmd_ei_accept(char* buf, int len)
+static void cmd_ei_publish(char* buf, int len)
 {
     int index = 0;
     int listen, r;
-    ErlConnect conn;
     long port;
     ei_x_buff x;
     int i;
@@ -170,6 +171,29 @@ static void cmd_ei_accept(char* buf, int len)
 #ifdef VXWORKS
     save_fd(i);
 #endif
+    /* send listen-fd, result and errno */
+    ei_x_new_with_version(&x);
+    ei_x_encode_tuple_header(&x, 3);
+    ei_x_encode_long(&x, listen);
+    ei_x_encode_long(&x, i);
+    ei_x_encode_long(&x, erl_errno);
+    send_bin_term(&x);
+    ei_x_free(&x);
+}
+
+static void cmd_ei_accept(char* buf, int len)
+{
+    int index = 0;
+    int r;
+    ErlConnect conn;
+    long listen;
+    ei_x_buff x;
+    int i;
+
+    /* get port */
+    if (ei_decode_long(buf, &index, &listen) < 0)
+	fail("expected int (listen fd)");
+
     r = ei_accept(&ec, listen, &conn);
 #ifdef VXWORKS
     save_fd(r);
@@ -200,7 +224,7 @@ static void cmd_ei_receive(char* buf, int len)
 	if (got == ERL_TICK)
 	    continue;
 	if (got == ERL_ERROR)
-	    fail("ei_xreceive_msg");
+	    fail1("ei_xreceive_msg, got==%d", got);
 	break;
     }
     index = 1;
diff --git a/lib/erl_interface/test/runner.erl b/lib/erl_interface/test/runner.erl
index 1084eec2a3..cbdeb3c8a9 100644
--- a/lib/erl_interface/test/runner.erl
+++ b/lib/erl_interface/test/runner.erl
@@ -67,7 +67,12 @@ start({Prog, Tc}) when is_list(Prog), is_integer(Tc) ->
 
 finish(Port) when is_port(Port) ->
     send_eot(Port),
-    recv_eot(Port).
+    ok = recv_eot(Port),
+    0 = receive
+            {Port,{exit_status,Status}} ->
+                Status
+        end,
+    ok.
 
 %% Sends an Erlang term to a C program.
 
diff --git a/lib/erl_interface/vsn.mk b/lib/erl_interface/vsn.mk
index 01fcee86dd..d76d110afd 100644
--- a/lib/erl_interface/vsn.mk
+++ b/lib/erl_interface/vsn.mk
@@ -1,2 +1,2 @@
-EI_VSN = 3.10
+EI_VSN = 3.10.1
 ERL_INTERFACE_VSN = $(EI_VSN)
diff --git a/lib/eunit/doc/src/Makefile b/lib/eunit/doc/src/Makefile
index f1491eb873..610e575af6 100644
--- a/lib/eunit/doc/src/Makefile
+++ b/lib/eunit/doc/src/Makefile
@@ -1,5 +1,5 @@
 #<copyright>
-# <year>2004-2007</year>
+# <year>2004-2017</year>
 # <holder>Ericsson AB, All Rights Reserved</holder>
 #</copyright>
 #<legalnotice>
@@ -51,11 +51,10 @@ EUNIT_MODULES = \
 
 XML_APPLICATION_FILES = ref_man.xml
 
-XML_REF3_FILES =  $(EUNIT_MODULES:=.xml) 
+XML_REF3_FILES =  $(EUNIT_MODULES:=.xml)
 
 XML_PART_FILES =  \
-	part.xml \
-	part_notes.xml
+	part.xml
 
 XML_CHAPTER_FILES =  \
 	chapter.xml
@@ -63,7 +62,7 @@ XML_CHAPTER_FILES =  \
 XML_NOTES_FILES =  \
 	notes.xml
 
-HTML_EXAMPLE_FILES =  
+HTML_EXAMPLE_FILES =
 
 HTML_STYLESHEET_FILES = \
 	../stylesheet.css
@@ -99,10 +98,10 @@ TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -123,8 +122,8 @@ man: $(MAN3_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-$(XML_REF3_FILES): 
-	escript $(DOCGEN)/priv/bin/xml_from_edoc.escript -def vsn $(EUNIT_VSN) -i $(EUNIT_INC_DIR) $(EUNIT_DIR)/$(@:%.xml=%.erl) 
+$(XML_REF3_FILES):
+	escript $(DOCGEN)/priv/bin/xml_from_edoc.escript -def vsn $(EUNIT_VSN) -i $(EUNIT_INC_DIR) $(EUNIT_DIR)/$(@:%.xml=%.erl)
 
 $(XML_CHAPTER_FILES):
 	escript $(DOCGEN)/priv/bin/xml_from_edoc.escript -def vsn $(EUNIT_VSN) -chapter ../overview.edoc
@@ -142,19 +141,19 @@ info:
 
 xml: $(XML_REF3_FILES) $(XML_CHAPTER_FILES)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
 	rm -f $(MAN3DIR)/*
 	rm -f $(XML_REF3_FILES) $(XML_CHAPTER_FILES) *.html
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -169,6 +168,3 @@ release_docs_spec: docs
 
 
 release_spec:
-
-
-
diff --git a/lib/eunit/doc/src/fascicules.xml b/lib/eunit/doc/src/fascicules.xml
deleted file mode 100644
index 217228785c..0000000000
--- a/lib/eunit/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-   <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/eunit/doc/src/notes.xml b/lib/eunit/doc/src/notes.xml
index 7133befe37..b38cb2e70e 100644
--- a/lib/eunit/doc/src/notes.xml
+++ b/lib/eunit/doc/src/notes.xml
@@ -33,6 +33,21 @@
   </header>
   <p>This document describes the changes made to the EUnit application.</p>
 
+<section><title>Eunit 2.3.5</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Eunit 2.3.4</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/eunit/doc/src/part_notes.xml b/lib/eunit/doc/src/part_notes.xml
deleted file mode 100644
index 7db65083e0..0000000000
--- a/lib/eunit/doc/src/part_notes.xml
+++ /dev/null
@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2008</year>
-      <year>2016</year>
-      <holder>Ericsson AB, All Rights Reserved</holder>
-    </copyright>
-    <legalnotice>
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
- 
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-  The Initial Developer of the Original Code is Ericsson AB.
-    </legalnotice>
-
-    <title>EUnit Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date>2008-10-29</date>
-    <rev></rev>
-
-  </header>
-  <description>
-    <p>The <em>EUnit</em> application 
-      contains modules with support for unit testing</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/eunit/vsn.mk b/lib/eunit/vsn.mk
index 25bb0dec17..2ed9eaac16 100644
--- a/lib/eunit/vsn.mk
+++ b/lib/eunit/vsn.mk
@@ -1 +1 @@
-EUNIT_VSN = 2.3.4
+EUNIT_VSN = 2.3.5
diff --git a/lib/hipe/cerl/erl_bif_types.erl b/lib/hipe/cerl/erl_bif_types.erl
index a3a936322a..462a1f9dcd 100644
--- a/lib/hipe/cerl/erl_bif_types.erl
+++ b/lib/hipe/cerl/erl_bif_types.erl
@@ -1701,24 +1701,6 @@ type(maps, size, 1, Xs, Opaques) ->
 		 t_from_range(LowerBound, UpperBound)
 	     end
 	 end, Opaques);
-type(maps, to_list, 1, Xs, Opaques) ->
-  strict(maps, to_list, 1, Xs,
-	 fun ([Map]) ->
-	     DefK = t_map_def_key(Map, Opaques),
-	     DefV = t_map_def_val(Map, Opaques),
-	     Pairs = t_map_entries(Map, Opaques),
-	     EType = lists:foldl(
-		       fun({K,_,V},EType0) ->
-			   case t_is_none(V) of
-			     true -> t_subtract(EType0, t_tuple([K,t_any()]));
-			     false -> t_sup(EType0, t_tuple([K,V]))
-			   end
-		       end, t_tuple([DefK, DefV]), Pairs),
-	     case t_is_none(EType) of
-	       true -> t_nil();
-	       false -> t_list(EType)
-	     end
-	 end, Opaques);
 type(maps, update, 3, Xs, Opaques) ->
   strict(maps, update, 3, Xs,
 	 fun ([Key, Value, Map]) ->
@@ -2648,8 +2630,6 @@ arg_types(maps, put, 3) ->
   [t_any(), t_any(), t_map()];
 arg_types(maps, size, 1) ->
   [t_map()];
-arg_types(maps, to_list, 1) ->
-  [t_map()];
 arg_types(maps, update, 3) ->
   [t_any(), t_any(), t_map()];
 arg_types(M, F, A) when is_atom(M), is_atom(F),
diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl
index d8d707c05e..77a2a7401c 100644
--- a/lib/hipe/cerl/erl_types.erl
+++ b/lib/hipe/cerl/erl_types.erl
@@ -1877,6 +1877,7 @@ t_map_put(KV, Map, Opaques) ->
 
 %% Key and Value are *not* unopaqued, but the map is
 map_put(_, ?none, _) -> ?none;
+map_put(_, ?unit, _) -> ?none;
 map_put({Key, Value}, ?map(Pairs,DefK,DefV), Opaques) ->
   case t_is_none_or_unit(Key) orelse t_is_none_or_unit(Value) of
     true -> ?none;
@@ -1902,6 +1903,7 @@ t_map_update(KV, Map) ->
 -spec t_map_update({erl_type(), erl_type()}, erl_type(), opaques()) -> erl_type().
 
 t_map_update(_, ?none, _) -> ?none;
+t_map_update(_, ?unit, _) -> ?none;
 t_map_update(KV={Key, _}, M, Opaques) ->
   case t_is_subtype(t_atom('true'), t_map_is_key(Key, M, Opaques)) of
     false -> ?none;
@@ -1922,6 +1924,7 @@ t_map_get(Key, Map, Opaques) ->
 	    end).
 
 map_get(_, ?none) -> ?none;
+map_get(_, ?unit) -> ?none;
 map_get(Key, ?map(Pairs, DefK, DefV)) ->
   DefRes =
     case t_do_overlap(DefK, Key) of
@@ -1957,6 +1960,7 @@ t_map_is_key(Key, Map, Opaques) ->
 	    end).
 
 map_is_key(_, ?none) -> ?none;
+map_is_key(_, ?unit) -> ?none;
 map_is_key(Key, ?map(Pairs, DefK, _DefV)) ->
   case is_singleton_type(Key) of
     true ->
diff --git a/lib/hipe/doc/src/Makefile b/lib/hipe/doc/src/Makefile
index a5edb80381..1c774d3357 100644
--- a/lib/hipe/doc/src/Makefile
+++ b/lib/hipe/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 2006-2016. All Rights Reserved.
+# Copyright Ericsson AB 2006-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -36,9 +36,9 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
 # Target Specs
 # ----------------------------------------------------
 XML_APPLICATION_FILES =  ref_man.xml
-XML_REF3_FILES = 
+XML_REF3_FILES =
 
-XML_PART_FILES = part_notes.xml
+XML_PART_FILES = hipe_app.xml
 XML_CHAPTER_FILES = notes.xml
 
 BOOK_FILES = book.xml
@@ -47,7 +47,7 @@ XML_FILES = \
 	$(BOOK_FILES) $(XML_CHAPTER_FILES) \
 	$(XML_PART_FILES) $(XML_REF3_FILES) $(XML_APPLICATION_FILES)
 
-GIF_FILES = 
+GIF_FILES =
 
 # ----------------------------------------------------
 
@@ -68,9 +68,9 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE =  $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -90,20 +90,20 @@ man: $(MAN3_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
 	rm -f $(MAN3DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 distclean: clean
 realclean: clean
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/hipe/doc/src/fascicules.xml b/lib/hipe/doc/src/fascicules.xml
deleted file mode 100644
index b15610fa8b..0000000000
--- a/lib/hipe/doc/src/fascicules.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="yes">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/hipe/doc/src/hipe_app.xml b/lib/hipe/doc/src/hipe_app.xml
index e489d155c3..aaeb06193d 100644
--- a/lib/hipe/doc/src/hipe_app.xml
+++ b/lib/hipe/doc/src/hipe_app.xml
@@ -47,6 +47,61 @@
       Details on HiPE compiler options are given by <c>hipe:help_options()</c>.</p>
   </description>  
   <section>
+    <title>Feature Limitations</title>
+    <p>
+      The HiPE compiler is in general compliant with the normal BEAM compiler,
+      with respect to semantic behavior. There are however features in the BEAM compiler
+      and the runtime system that have limited or no support for HiPE compiled modules.
+    </p>
+    <taglist>
+      <tag>Stack traces</tag>
+      <item><p>Stack traces returned from <seealso marker="erts:erlang#get_stacktrace/0">
+      <c>erlang:get_stacktrace/0</c></seealso> or as part of <c>'EXIT'</c> terms
+      can look incomplete if HiPE compiled functions are involved. Typically a stack trace
+      will contain only BEAM compiled functions or only HiPE compiled functions, depending
+      on where the exception was raised.</p>
+      <p>Source code line numbers in stack traces are also not supported by HiPE compiled functions.</p>
+      </item>
+
+      <tag>Tracing</tag>
+      <item><p>Erlang call trace is not supported by HiPE. Calling
+      <seealso marker="erts:erlang#trace_pattern/3"><c>erlang:trace_pattern({M,F,A}, ...)</c></seealso>
+      does not have any effect on HiPE compiled modules.</p>
+      </item>
+
+      <tag>NIFs</tag>
+      <item><p>Modules compiled with HiPE can not call <seealso marker="erts:erlang#load_nif-2">
+      <c>erlang:load_nif/2</c></seealso> to load NIFs.</p>
+      </item>
+
+      <tag>-on_load</tag>
+      <item><p>Modules compiled with HiPE can not use
+      <seealso marker="doc/reference_manual:code_loading#on_load"><c>-on_load()</c></seealso>
+      directives.</p>
+      </item>
+    </taglist>
+
+  </section>
+  <section>
+    <title>Performance Limitations</title>
+    <p>
+      The HiPE compiler does in general produce faster code than the
+      BEAM compiler. There are however some situation when HiPE
+      compiled code will perform worse than BEAM code.
+    </p>
+    <taglist>
+      <tag>Mode switches</tag>
+      <item><p>Every time a process changes from executing code in a
+      HiPE compiled module to a BEAM compiled module (or vice versa),
+      it will do a mode switch. This involves a certain amount of
+      CPU overhead which can have a negative net impact if the
+      process is switching back and forth without getting enough done in
+      each mode.</p>
+      </item>
+
+    </taglist>
+  </section>
+  <section>
     <title>SEE ALSO</title>
     <p>
       <seealso marker="stdlib:c">c(3)</seealso>, 
diff --git a/lib/hipe/doc/src/notes.xml b/lib/hipe/doc/src/notes.xml
index eadaee50e2..bad0c254ce 100644
--- a/lib/hipe/doc/src/notes.xml
+++ b/lib/hipe/doc/src/notes.xml
@@ -31,6 +31,39 @@
   </header>
   <p>This document describes the changes made to HiPE.</p>
 
+<section><title>Hipe 3.17</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fix bug for hipe compiled code using
+	    <c>&lt;&lt;X/utf32&gt;&gt;</c> binary construction that
+	    could cause faulty result or even VM crash.</p>
+          <p>
+	    On architectures other than x86_64, code need to be
+	    recompiled to benefit from this fix.</p>
+          <p>
+	    Own Id: OTP-14740</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Added documentation about limitations of hipe compared to
+	    beam compiled code.</p>
+          <p>
+	    Own Id: OTP-14767</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Hipe 3.16.1</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/hipe/doc/src/part_notes.xml b/lib/hipe/doc/src/part_notes.xml
deleted file mode 100644
index 828c304fb5..0000000000
--- a/lib/hipe/doc/src/part_notes.xml
+++ /dev/null
@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2006</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>HiPE Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p><em>HiPE</em> - High Performance Erlang.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/hipe/icode/hipe_beam_to_icode.erl b/lib/hipe/icode/hipe_beam_to_icode.erl
index 2abecf7f18..7ff9fd83eb 100644
--- a/lib/hipe/icode/hipe_beam_to_icode.erl
+++ b/lib/hipe/icode/hipe_beam_to_icode.erl
@@ -415,11 +415,13 @@ trans_fun([{wait_timeout,{_,Lbl},Reg}|Instructions], Env) ->
   SuspTmout = hipe_icode:mk_if(suspend_msg_timeout,[],
 			       map_label(Lbl),hipe_icode:label_name(DoneLbl)),
   Movs ++ [SetTmout, SuspTmout, DoneLbl | trans_fun(Instructions,Env1)];
-%%--- recv_mark/1 & recv_set/1 ---  XXX: Handle better??
+%%--- recv_mark/1 & recv_set/1 ---
 trans_fun([{recv_mark,{f,_}}|Instructions], Env) ->
-  trans_fun(Instructions,Env);
+  Mark = hipe_icode:mk_primop([],recv_mark,[]),
+  [Mark | trans_fun(Instructions,Env)];
 trans_fun([{recv_set,{f,_}}|Instructions], Env) ->
-  trans_fun(Instructions,Env);
+  Set = hipe_icode:mk_primop([],recv_set,[]),
+  [Set | trans_fun(Instructions,Env)];
 %%--------------------------------------------------------------------
 %%--- Translation of arithmetics {bif,ArithOp, ...} ---
 %%--------------------------------------------------------------------
@@ -794,7 +796,7 @@ trans_fun([{bs_append,{f,Lbl},Size,W,R,U,Binary,{field_flags,F},Dst}|
   SizeArg = trans_arg(Size),
   BinArg = trans_arg(Binary),
   IcodeDst = mk_var(Dst),
-  Offset = mk_var(reg),
+  Offset = mk_var(reg_gcsafe),
   Base = mk_var(reg),
   trans_bin_call({hipe_bs_primop,{bs_append,W,R,U,F}},Lbl,[SizeArg,BinArg],
 		[IcodeDst,Base,Offset],
@@ -805,7 +807,7 @@ trans_fun([{bs_private_append,{f,Lbl},Size,U,Binary,{field_flags,F},Dst}|
   SizeArg = trans_arg(Size),
   BinArg = trans_arg(Binary),
   IcodeDst = mk_var(Dst),
-  Offset = mk_var(reg),
+  Offset = mk_var(reg_gcsafe),
   Base = mk_var(reg),
   trans_bin_call({hipe_bs_primop,{bs_private_append,U,F}},
 		 Lbl,[SizeArg,BinArg],
@@ -844,7 +846,7 @@ trans_fun([{bs_init2,{f,Lbl},Size,_Words,_LiveRegs,{field_flags,Flags0},X}|
 	   Instructions], Env) ->
   Dst = mk_var(X),
   Flags = resolve_native_endianess(Flags0),
-  Offset = mk_var(reg),
+  Offset = mk_var(reg_gcsafe),
   Base = mk_var(reg),
   {Name, Args} =
     case Size of
@@ -860,7 +862,7 @@ trans_fun([{bs_init_bits,{f,Lbl},Size,_Words,_LiveRegs,{field_flags,Flags0},X}|
 	   Instructions], Env) ->
   Dst = mk_var(X),
   Flags = resolve_native_endianess(Flags0),
-  Offset = mk_var(reg),
+  Offset = mk_var(reg_gcsafe),
   Base = mk_var(reg),
   {Name, Args} =
     case Size of
@@ -1157,6 +1159,11 @@ trans_fun([{put_map_exact,{f,Lbl},Map,Dst,_N,{list,Pairs}}|Instructions], Env) -
 	  gen_put_map_instrs(new, exact, TempMapVar, Dst, new, Pairs, Env1)
       end,
   [MapMove, TempMapMove, PutInstructions | trans_fun(Instructions, Env2)];
+%%--- build_stacktrace ---
+trans_fun([build_stacktrace|Instructions], Env) ->
+  Vars = [mk_var({x,0})], %{x,0} is implict arg and dst
+  [hipe_icode:mk_primop(Vars,build_stacktrace,Vars),
+   trans_fun(Instructions, Env)];
 %%--------------------------------------------------------------------
 %%--- ERROR HANDLING ---
 %%--------------------------------------------------------------------
@@ -1505,7 +1512,10 @@ clone_dst(Dest) ->
   New = 
     case hipe_icode:is_reg(Dest) of
       true ->
-	mk_var(reg);
+	case hipe_icode:reg_is_gcsafe(Dest) of
+	  true -> mk_var(reg_gcsafe);
+	  false -> mk_var(reg)
+	end;
       false ->
 	true = hipe_icode:is_var(Dest),	      
 	mk_var(new)
@@ -2126,7 +2136,12 @@ mk_var(reg) ->
   T = hipe_gensym:new_var(icode),
   V = (5*T)+4,
   hipe_gensym:update_vrange(icode,V),
-  hipe_icode:mk_reg(V).
+  hipe_icode:mk_reg(V);
+mk_var(reg_gcsafe) ->
+  T = hipe_gensym:new_var(icode),
+  V = (5*T)+4, % same namespace as 'reg'
+  hipe_gensym:update_vrange(icode,V),
+  hipe_icode:mk_reg_gcsafe(V).
 
 %%-----------------------------------------------------------------------
 %% Make an icode label of proper type
@@ -2296,6 +2311,12 @@ split_code([First|Code], Label, Instr) ->
 
 split_code([Instr|Code], Label, Instr, Prev, As) when Prev =:= Label ->
   split_code_final(Code, As);  % drop both label and instruction
+split_code([{icode_end_try}|_]=Code, Label, {try_case,_}, Prev, As)
+  when Prev =:= Label ->
+  %% The try_case has been replaced with try_end as an optimization.
+  %% Keep this instruction, since it might be the only try_end instruction
+  %% for this try/catch block.
+  split_code_final(Code, As);  % drop label
 split_code([Other|_Code], Label, Instr, Prev, _As) when Prev =:= Label ->
   ?EXIT({missing_instr_after_label, Label, Instr, [Other, Prev | _As]});
 split_code([Other|Code], Label, Instr, Prev, As) ->
diff --git a/lib/hipe/icode/hipe_icode.erl b/lib/hipe/icode/hipe_icode.erl
index 24b7ac4783..bc3403b0c5 100644
--- a/lib/hipe/icode/hipe_icode.erl
+++ b/lib/hipe/icode/hipe_icode.erl
@@ -515,10 +515,12 @@
 	 annotate_variable/2,  %% annotate_var_or_reg(VarOrReg, Type)
 	 unannotate_variable/1,%% unannotate_var_or_reg(VarOrReg)
 	 mk_reg/1,               %% mk_reg(Id)
+	 mk_reg_gcsafe/1,        %% mk_reg_gcsafe(Id)
 	 mk_fvar/1,              %% mk_fvar(Id)
 	 mk_new_var/0,           %% mk_new_var()
 	 mk_new_fvar/0,          %% mk_new_fvar()
 	 mk_new_reg/0,           %% mk_new_reg()
+	 mk_new_reg_gcsafe/0,    %% mk_new_reg_gcsafe()
 	 mk_phi/1,               %% mk_phi(Id)
 	 mk_phi/2                %% mk_phi(Id, ArgList)
 	]).
@@ -1260,14 +1262,22 @@ is_var(_) -> false.
 -spec mk_reg(non_neg_integer()) -> #icode_variable{kind::'reg'}.
 mk_reg(V) -> #icode_variable{name=V, kind=reg}.
 
--spec reg_name(#icode_variable{kind::'reg'}) -> non_neg_integer().
-reg_name(#icode_variable{name=Name, kind=reg}) -> Name.
+-spec mk_reg_gcsafe(non_neg_integer()) -> #icode_variable{kind::'reg_gcsafe'}.
+mk_reg_gcsafe(V) -> #icode_variable{name=V, kind=reg_gcsafe}.
 
--spec reg_is_gcsafe(#icode_variable{kind::'reg'}) -> 'false'.
-reg_is_gcsafe(#icode_variable{kind=reg}) -> false. % for now
+-spec reg_name(#icode_variable{kind::'reg'|'reg_gcsafe'})
+	      -> non_neg_integer().
+reg_name(#icode_variable{name=Name, kind=reg})        -> Name;
+reg_name(#icode_variable{name=Name, kind=reg_gcsafe}) -> Name.
+
+-spec reg_is_gcsafe(#icode_variable{kind::'reg'}) -> 'false';
+		   (#icode_variable{kind::'reg_gcsafe'}) -> 'true'.
+reg_is_gcsafe(#icode_variable{kind=reg})        -> false;
+reg_is_gcsafe(#icode_variable{kind=reg_gcsafe}) -> true.
 
 -spec is_reg(icode_argument()) -> boolean().
-is_reg(#icode_variable{kind=reg}) -> true;
+is_reg(#icode_variable{kind=reg})        -> true;
+is_reg(#icode_variable{kind=reg_gcsafe}) -> true;
 is_reg(_) -> false.
 
 -spec mk_fvar(non_neg_integer()) -> #icode_variable{kind::'fvar'}.
@@ -1676,6 +1686,16 @@ mk_new_reg() ->
   mk_reg(hipe_gensym:get_next_var(icode)).
 
 %%
+%% @doc Makes a new gcsafe register; that is, a register that is allowed to be
+%% live over calls and other operations that might cause GCs and thus move heap
+%% data around.
+%%
+
+-spec mk_new_reg_gcsafe() -> icode_reg().
+mk_new_reg_gcsafe() ->
+  mk_reg_gcsafe(hipe_gensym:get_next_var(icode)).
+
+%%
 %% @doc Makes a new label.
 %%
 
diff --git a/lib/hipe/icode/hipe_icode.hrl b/lib/hipe/icode/hipe_icode.hrl
index 380ddd8371..7ed80a9ed4 100644
--- a/lib/hipe/icode/hipe_icode.hrl
+++ b/lib/hipe/icode/hipe_icode.hrl
@@ -41,9 +41,9 @@
 
 -type variable_annotation() :: {atom(), any(), fun((any()) -> string())}.
 
--record(icode_variable, {name :: non_neg_integer(), 
-			 kind :: 'var' | 'reg' | 'fvar',
-			 annotation = [] :: [] | variable_annotation()}). 
+-record(icode_variable, {name :: non_neg_integer(),
+			 kind :: 'var' | 'reg' | 'reg_gcsafe' | 'fvar',
+			 annotation = [] :: [] | variable_annotation()}).
 
 %%---------------------------------------------------------------------
 %% Type declarations for Icode instructions
@@ -66,7 +66,7 @@
 -type icode_funcall()   :: mfa() | icode_primop().
 
 -type icode_var()	:: #icode_variable{kind::'var'}.
--type icode_reg()	:: #icode_variable{kind::'reg'}.
+-type icode_reg()	:: #icode_variable{kind::'reg'|'reg_gcsafe'}.
 -type icode_fvar()	:: #icode_variable{kind::'fvar'}.
 -type icode_argument()	:: #icode_const{} | #icode_variable{}.
 -type icode_term_arg()	:: icode_var() | #icode_const{}.
diff --git a/lib/hipe/icode/hipe_icode_liveness.erl b/lib/hipe/icode/hipe_icode_liveness.erl
index 51e2855108..e61529a1bb 100644
--- a/lib/hipe/icode/hipe_icode_liveness.erl
+++ b/lib/hipe/icode/hipe_icode_liveness.erl
@@ -77,6 +77,7 @@ print_var(#icode_variable{name=V, kind=Kind, annotation=T}) ->
   case Kind of
     var -> io:format("v~p", [V]);
     reg -> io:format("r~p", [V]);
+    reg_gcsafe -> io:format("rs~p", [V]);
     fvar -> io:format("fv~p", [V])
   end,
   case T of
diff --git a/lib/hipe/icode/hipe_icode_pp.erl b/lib/hipe/icode/hipe_icode_pp.erl
index 5b017dca32..33d1e62884 100644
--- a/lib/hipe/icode/hipe_icode_pp.erl
+++ b/lib/hipe/icode/hipe_icode_pp.erl
@@ -230,7 +230,10 @@ pp_arg(Dev, Arg) ->
 	  case hipe_icode:is_reg(Arg) of
 	    true ->
 	      N = hipe_icode:reg_name(Arg),
-	      io:format(Dev, "r~p", [N]);
+	      case hipe_icode:reg_is_gcsafe(Arg) of
+		true  -> io:format(Dev, "rs~p", [N]);
+		false -> io:format(Dev, "r~p", [N])
+	      end;
 	    false ->
 	      N = hipe_icode:fvar_name(Arg),
 	      io:format(Dev, "fv~p", [N])
diff --git a/lib/hipe/icode/hipe_icode_primops.erl b/lib/hipe/icode/hipe_icode_primops.erl
index 50ece05259..941516e8b1 100644
--- a/lib/hipe/icode/hipe_icode_primops.erl
+++ b/lib/hipe/icode/hipe_icode_primops.erl
@@ -67,6 +67,8 @@ is_safe(fp_mul) -> false;
 is_safe(fp_sub) -> false;
 is_safe(mktuple) -> true;
 is_safe(next_msg) -> false;
+is_safe(recv_mark) -> false;
+is_safe(recv_set) -> false;
 is_safe(redtest) -> false;
 is_safe(select_msg) -> false;
 is_safe(self) -> true;
@@ -130,6 +132,7 @@ is_safe({hipe_bs_primop, {bs_match_string, _, _}}) -> false;
 is_safe({hipe_bs_primop, {bs_append, _, _, _, _}}) -> false;
 is_safe({hipe_bs_primop, {bs_private_append, _, _}}) -> false;
 is_safe({hipe_bs_primop, bs_init_writable}) -> true;
+is_safe(build_stacktrace) -> true;
 is_safe(#mkfun{}) -> true;
 is_safe(#unsafe_element{}) -> true;
 is_safe(#unsafe_update_element{}) -> true;
@@ -165,6 +168,8 @@ fails(fp_mul) -> false;
 fails(fp_sub) -> false;
 fails(mktuple) -> false;
 fails(next_msg) -> false;
+fails(recv_mark) -> false;
+fails(recv_set) -> false;
 fails(redtest) -> false;
 fails(select_msg) -> false;
 fails(self) -> false;
@@ -230,6 +235,7 @@ fails({hipe_bs_primop, bs_final}) -> false;
 fails({hipe_bs_primop, {bs_append, _, _, _, _}}) -> true;
 fails({hipe_bs_primop, {bs_private_append, _, _}}) -> true;
 fails({hipe_bs_primop, bs_init_writable}) -> true;
+fails(build_stacktrace) -> false;
 fails(#mkfun{}) -> false;
 fails(#unsafe_element{}) -> false;
 fails(#unsafe_update_element{}) -> false;
@@ -709,6 +715,10 @@ type(Primop, Args) ->
       erl_types:t_any();
     next_msg ->
       erl_types:t_any();
+    recv_mark ->
+      erl_types:t_any();
+    recv_set ->
+      erl_types:t_any();
     select_msg ->
       erl_types:t_any();
     set_timeout ->
@@ -723,6 +733,8 @@ type(Primop, Args) ->
       erl_types:t_any();
     debug_native_called ->
       erl_types:t_any();
+    build_stacktrace ->
+      erl_types:t_list();
     {M, F, A} ->
       erl_bif_types:type(M, F, A, Args)
   end.
@@ -883,6 +895,10 @@ type(Primop) ->
       erl_types:t_any();
     next_msg ->
       erl_types:t_any();
+    recv_mark ->
+      erl_types:t_any();
+    recv_set ->
+      erl_types:t_any();
     select_msg ->
       erl_types:t_any();
     set_timeout ->
@@ -891,6 +907,8 @@ type(Primop) ->
       erl_types:t_any();
 %%% -----------------------------------------------------
 %%% Other
+    build_stacktrace ->
+      erl_types:t_any();
     #closure_element{} ->
       erl_types:t_any();
     redtest ->
diff --git a/lib/hipe/icode/hipe_icode_range.erl b/lib/hipe/icode/hipe_icode_range.erl
index 287b1c80fe..cf74c1eb5b 100644
--- a/lib/hipe/icode/hipe_icode_range.erl
+++ b/lib/hipe/icode/hipe_icode_range.erl
@@ -1160,6 +1160,8 @@ basic_type(#gc_test{}) -> not_analysed;
 %% Message handling
 basic_type(check_get_msg) -> not_analysed;
 basic_type(next_msg) -> not_analysed;
+basic_type(recv_mark) -> not_analysed;
+basic_type(recv_set) -> not_analysed;
 basic_type(select_msg) -> not_analysed;
 basic_type(suspend_msg) -> not_analysed;
 %% Functions
@@ -1184,7 +1186,8 @@ basic_type(unsafe_hd) -> not_analysed;
 basic_type(unsafe_tl) -> not_int;
 basic_type(#element{}) -> not_analysed;
 basic_type(#unsafe_element{}) -> not_analysed;
-basic_type(#unsafe_update_element{}) -> not_analysed.
+basic_type(#unsafe_update_element{}) -> not_analysed;
+basic_type(build_stacktrace) -> not_int.
 
 -spec analyse_bs_get_integer(integer(), integer(), boolean()) -> range_tuple().
 
diff --git a/lib/hipe/main/hipe.app.src b/lib/hipe/main/hipe.app.src
index 5b2280594f..66008a4178 100644
--- a/lib/hipe/main/hipe.app.src
+++ b/lib/hipe/main/hipe.app.src
@@ -179,6 +179,7 @@
 	     hipe_rtl_to_sparc,
 	     hipe_rtl_to_x86,
 	     hipe_rtl_varmap,
+	     hipe_rtl_verify_gcsafe,
 	     hipe_segment_trees,
 	     hipe_sdi,
 	     hipe_sparc,
@@ -236,4 +237,4 @@
   {applications, [kernel,stdlib]},
   {env, []},
   {runtime_dependencies, ["syntax_tools-1.6.14","stdlib-3.4","kernel-5.3",
-			  "erts-9.0","compiler-5.0"]}]}.
+			  "erts-9.2","compiler-5.0"]}]}.
diff --git a/lib/hipe/main/hipe.erl b/lib/hipe/main/hipe.erl
index f5f5bf5830..acb9b7b062 100644
--- a/lib/hipe/main/hipe.erl
+++ b/lib/hipe/main/hipe.erl
@@ -1414,6 +1414,7 @@ opt_keys() ->
      use_clusters,
      use_jumptable,
      verbose,
+     verify_gcsafe,
      %% verbose_spills,
      x87].
 
@@ -1510,7 +1511,8 @@ opt_negations() ->
    {no_use_callgraph, use_callgraph},
    {no_use_clusters, use_clusters},
    {no_use_inline_atom_search, use_inline_atom_search},
-   {no_use_indexing, use_indexing}].
+   {no_use_indexing, use_indexing},
+   {no_verify_gcsafe, verify_gcsafe}].
 
 %% Don't use negative forms in right-hand sides of aliases and expansions!
 %% We only expand negations once, before the other expansions are done.
diff --git a/lib/hipe/main/hipe_main.erl b/lib/hipe/main/hipe_main.erl
index dca6fddec3..4b5eb4c63e 100644
--- a/lib/hipe/main/hipe_main.erl
+++ b/lib/hipe/main/hipe_main.erl
@@ -410,6 +410,11 @@ icode_to_rtl(MFA, Icode, Options, Servers) ->
         hipe_llvm_liveness:analyze(RtlCfg4)
     end,
   pp(RtlCfg5, MFA, rtl, pp_rtl, Options, Servers),
+  case proplists:get_bool(verify_gcsafe, Options) of
+    false -> ok;
+    true ->
+      ok = hipe_rtl_verify_gcsafe:check(RtlCfg5)
+  end,
   LinearRTL1 = hipe_rtl_cfg:linearize(RtlCfg5),
   LinearRTL2 = hipe_rtl_cleanup_const:cleanup(LinearRTL1),
   %% hipe_rtl:pp(standard_io, LinearRTL2),
diff --git a/lib/hipe/rtl/Makefile b/lib/hipe/rtl/Makefile
index 5abc9ec049..becdd0b7d8 100644
--- a/lib/hipe/rtl/Makefile
+++ b/lib/hipe/rtl/Makefile
@@ -50,7 +50,7 @@ HIPE_MODULES = hipe_rtl hipe_rtl_cfg \
 	  hipe_rtl_ssa hipe_rtl_ssa_const_prop \
 	  hipe_rtl_cleanup_const hipe_rtl_symbolic hipe_rtl_lcm \
 	  hipe_rtl_ssapre hipe_rtl_binary hipe_rtl_ssa_avail_expr \
-	  hipe_rtl_arch hipe_tagscheme
+	  hipe_rtl_arch hipe_tagscheme hipe_rtl_verify_gcsafe
 else
 HIPE_MODULES =
 endif
diff --git a/lib/hipe/rtl/hipe_rtl.erl b/lib/hipe/rtl/hipe_rtl.erl
index 04c9728d5c..33027f3259 100644
--- a/lib/hipe/rtl/hipe_rtl.erl
+++ b/lib/hipe/rtl/hipe_rtl.erl
@@ -1740,7 +1740,10 @@ pp_reg(Dev, Arg) ->
     true ->
       pp_hard_reg(Dev, reg_index(Arg));
     false ->
-      io:format(Dev, "r~w", [reg_index(Arg)])
+      case reg_is_gcsafe(Arg) of
+        true -> io:format(Dev, "rs~w", [reg_index(Arg)]);
+        false -> io:format(Dev, "r~w", [reg_index(Arg)])
+      end
   end.
 
 pp_var(Dev, Arg) ->
diff --git a/lib/hipe/rtl/hipe_rtl_binary_construct.erl b/lib/hipe/rtl/hipe_rtl_binary_construct.erl
index 52ea5db382..5b89d4946a 100644
--- a/lib/hipe/rtl/hipe_rtl_binary_construct.erl
+++ b/lib/hipe/rtl/hipe_rtl_binary_construct.erl
@@ -195,8 +195,13 @@ gen_rtl(BsOP, Dst, Args, TrueLblName, FalseLblName, SystemLimitLblName, ConstTab
 
 	  bs_validate_unicode ->
 	    [_Arg] = Args,
-	    [hipe_rtl:mk_call([], bs_validate_unicode, Args,
-			      TrueLblName, FalseLblName, not_remote)];
+            [IsUnicode] = create_regs(1),
+            RetLbl = hipe_rtl:mk_new_label(),
+            [hipe_rtl:mk_call([IsUnicode], is_unicode, Args,
+                              hipe_rtl:label_name(RetLbl), [], not_remote),
+             RetLbl,
+             hipe_rtl:mk_branch(IsUnicode, ne, hipe_rtl:mk_imm(0),
+                                TrueLblName, FalseLblName, 0.99)];
 
 	  bs_final ->
 	    Zero = hipe_rtl:mk_imm(0),
@@ -354,7 +359,8 @@ not_writable_code(Bin, SizeReg, Dst, Base, Offset, Unit,
 allocate_writable(Dst, Base, UsedBytes, TotBytes, TotSize) ->
   Zero = hipe_rtl:mk_imm(0),
   [NextLbl] = create_lbls(1),
-  [EndSubSize, EndSubBitSize, ProcBin] = create_regs(3),
+  [EndSubSize, EndSubBitSize] = create_regs(2),
+  [ProcBin] = create_unsafe_regs(1),
   [hipe_rtl:mk_call([Base], bs_allocate, [UsedBytes],
 		    hipe_rtl:label_name(NextLbl), [], not_remote),
    NextLbl,
@@ -581,12 +587,12 @@ const_init2(Size, Dst, Base, Offset, TrueLblName) ->
     false ->
       ByteSize = hipe_rtl:mk_new_reg(),
       [hipe_rtl:mk_gctest(?PROC_BIN_WORDSIZE+?SUB_BIN_WORDSIZE),
-       hipe_rtl:mk_move(Offset, hipe_rtl:mk_imm(0)),
        hipe_rtl:mk_move(ByteSize, hipe_rtl:mk_imm(Size)),
        hipe_rtl:mk_call([Base], bs_allocate, [ByteSize],
 			hipe_rtl:label_name(NextLbl), [], not_remote),
        NextLbl,
        hipe_tagscheme:create_refc_binary(Base, ByteSize, Dst),
+       hipe_rtl:mk_move(Offset, hipe_rtl:mk_imm(0)),
        hipe_rtl:mk_goto(TrueLblName)]
   end.
 
@@ -629,13 +635,12 @@ var_init2(Size, Dst, Base, Offset, TrueLblName, SystemLimitLblName, FalseLblName
   Log2WordSize = hipe_rtl_arch:log2_word_size(),
   WordSize = hipe_rtl_arch:word_size(),
   [ContLbl, HeapLbl, REFCLbl, NextLbl] = create_lbls(4),
-  [USize, Tmp] = create_unsafe_regs(2),
+  [USize, Tmp] = create_regs(2),
   [get_word_integer(Size, USize, SystemLimitLblName, FalseLblName),
    hipe_rtl:mk_branch(USize, leu, hipe_rtl:mk_imm(?MAX_BINSIZE),
 		      hipe_rtl:label_name(ContLbl),
 		      SystemLimitLblName),
    ContLbl,
-   hipe_rtl:mk_move(Offset, hipe_rtl:mk_imm(0)),
    hipe_rtl:mk_branch(USize, leu, hipe_rtl:mk_imm(?MAX_HEAP_BIN_SIZE),
 		      hipe_rtl:label_name(HeapLbl),
 		      hipe_rtl:label_name(REFCLbl)),
@@ -645,6 +650,7 @@ var_init2(Size, Dst, Base, Offset, TrueLblName, SystemLimitLblName, FalseLblName
    hipe_rtl:mk_alu(Tmp, Tmp, add, hipe_rtl:mk_imm(?SUB_BIN_WORDSIZE)),
    hipe_rtl:mk_gctest(Tmp),
    hipe_tagscheme:create_heap_binary(Base, USize, Dst),
+   hipe_rtl:mk_move(Offset, hipe_rtl:mk_imm(0)),
    hipe_rtl:mk_goto(TrueLblName),
    REFCLbl,
    hipe_rtl:mk_gctest(?PROC_BIN_WORDSIZE+?SUB_BIN_WORDSIZE),
@@ -652,6 +658,7 @@ var_init2(Size, Dst, Base, Offset, TrueLblName, SystemLimitLblName, FalseLblName
 		    hipe_rtl:label_name(NextLbl), [], not_remote),
    NextLbl,
    hipe_tagscheme:create_refc_binary(Base, USize, Dst),
+   hipe_rtl:mk_move(Offset, hipe_rtl:mk_imm(0)),
    hipe_rtl:mk_goto(TrueLblName)].
 
 var_init_bits(Size, Dst, Base, Offset, TrueLblName, SystemLimitLblName, FalseLblName) ->
@@ -858,7 +865,7 @@ get_base_offset_size(Binary, SrcBase, SrcOffset, SrcSize, FLName) ->
    JoinLbl,
    hipe_tagscheme:test_heap_binary(Orig, HeapLblName, REFCLblName),
    HeapLbl,
-   hipe_rtl:mk_alu(SrcBase, Orig, add, hipe_rtl:mk_imm(?HEAP_BIN_DATA-2)),
+   hipe_tagscheme:get_field_addr_from_term({heap_bin, {data, 0}}, Orig, SrcBase),
    hipe_rtl:mk_goto(EndLblName),
    REFCLbl,
    hipe_tagscheme:get_field_from_term({proc_bin,bytes}, Orig, SrcBase),
@@ -1205,6 +1212,12 @@ is_divisible(Dividend, Divisor, SuccLbl, FailLbl) ->
       [hipe_rtl:mk_branch(Dividend, 'and', Mask, eq, SuccLbl, FailLbl, 0.99)];
     false ->
       %% We need division, fall back to a primop
-      [hipe_rtl:mk_call([], is_divisible, [Dividend, hipe_rtl:mk_imm(Divisor)],
-			SuccLbl, FailLbl, not_remote)]
+      [Tmp] = create_regs(1),
+      RetLbl = hipe_rtl:mk_new_label(),
+      [hipe_rtl:mk_call([Tmp], is_divisible,
+                        [Dividend, hipe_rtl:mk_imm(Divisor)],
+                        hipe_rtl:label_name(RetLbl), [], not_remote),
+       RetLbl,
+       hipe_rtl:mk_branch(Tmp, ne, hipe_rtl:mk_imm(0),
+                          SuccLbl, FailLbl, 0.99)]
   end.
diff --git a/lib/hipe/rtl/hipe_rtl_binary_match.erl b/lib/hipe/rtl/hipe_rtl_binary_match.erl
index 362a52f8fe..4575213838 100644
--- a/lib/hipe/rtl/hipe_rtl_binary_match.erl
+++ b/lib/hipe/rtl/hipe_rtl_binary_match.erl
@@ -730,7 +730,7 @@ get_base(Orig,Base) ->
   [hipe_tagscheme:test_heap_binary(Orig, hipe_rtl:label_name(HeapLbl),
 				   hipe_rtl:label_name(REFCLbl)),
    HeapLbl,
-   hipe_rtl:mk_alu(Base, Orig, 'add', hipe_rtl:mk_imm(?HEAP_BIN_DATA-2)),
+   hipe_tagscheme:get_field_addr_from_term({heap_bin, {data, 0}}, Orig, Base),
    hipe_rtl:mk_goto(hipe_rtl:label_name(EndLbl)),
    REFCLbl,
    get_field_from_term({proc_bin, flags}, Orig, Flags),
@@ -740,7 +740,7 @@ get_base(Orig,Base) ->
    WritableLbl,
    hipe_rtl:mk_call([], emasculate_binary, [Orig], [], [], 'not_remote'),
    NotWritableLbl,
-   hipe_rtl:mk_load(Base, Orig, hipe_rtl:mk_imm(?PROC_BIN_BYTES-2)),
+   get_field_from_term({proc_bin, bytes}, Orig, Base),
    EndLbl].
 
 extract_matchstate_var(binsize, Ms) ->
@@ -842,12 +842,12 @@ make_dyn_prep(SizeReg, CCode) ->
 %%------------------------------------------------------------------------
 
 get_unaligned_int(Dst1, Size, Base, Offset, Shiftr, Type, TrueLblName) ->
-  [Reg] = create_regs(1),
+  [Reg] = create_gcsafe_regs(1),
   [get_maybe_unaligned_int_to_reg(Reg, Size, Base, Offset, Shiftr, Type),
    do_bignum_code(Size, Type, Reg, Dst1, TrueLblName)].
 
 get_maybe_unaligned_int_to_reg(Reg, Size, Base, Offset, Shiftr, Type) ->
-  [LowBits] = create_regs(1),
+  [LowBits] = create_gcsafe_regs(1),
   [AlignedLbl, UnAlignedLbl, EndLbl] = create_lbls(3),
   [hipe_rtl:mk_alub(LowBits, Offset, 'and', hipe_rtl:mk_imm(?LOW_BITS),
 		    eq, hipe_rtl:label_name(AlignedLbl), 
@@ -1001,7 +1001,7 @@ do_bignum_code(Size, {Signedness,_}, Src, Dst1, TrueLblName)
     end.
 
 signed_bignum(Dst1, Src, TrueLblName) ->
-  Tmp1 = hipe_rtl:mk_new_reg(),
+  Tmp1 = hipe_rtl:mk_new_reg_gcsafe(),
   BignumLabel = hipe_rtl:mk_new_label(),
   [hipe_tagscheme:realtag_fixnum(Dst1, Src),
    hipe_tagscheme:realuntag_fixnum(Tmp1, Dst1),
diff --git a/lib/hipe/rtl/hipe_rtl_cleanup_const.erl b/lib/hipe/rtl/hipe_rtl_cleanup_const.erl
index bfa6b9682e..00cc2bcb37 100644
--- a/lib/hipe/rtl/hipe_rtl_cleanup_const.erl
+++ b/lib/hipe/rtl/hipe_rtl_cleanup_const.erl
@@ -69,9 +69,9 @@ cleanup_instr([Const|Left], I, Acc) ->
   case I of
     X when is_record(X, fp_unop) orelse is_record(X, fp) ->
       Fdst = hipe_rtl:mk_new_fpreg(),
-      Fconv = hipe_tagscheme:unsafe_untag_float(Fdst, Dst),		  
+      Fconv = lists:flatten(hipe_tagscheme:unsafe_untag_float(Fdst, Dst)),
       NewI = hipe_rtl:subst_uses([{Const, Fdst}], I),
-      cleanup_instr(Left, NewI, Fconv ++ [Load|Acc]);
+      cleanup_instr(Left, NewI, lists:reverse(Fconv, [Load|Acc]));
     _ ->
       NewI = hipe_rtl:subst_uses([{Const, Dst}], I),
       cleanup_instr(Left, NewI, [Load|Acc])
diff --git a/lib/hipe/rtl/hipe_rtl_lcm.erl b/lib/hipe/rtl/hipe_rtl_lcm.erl
index 9dcdd05fb1..af39c9a0a4 100644
--- a/lib/hipe/rtl/hipe_rtl_lcm.erl
+++ b/lib/hipe/rtl/hipe_rtl_lcm.erl
@@ -182,42 +182,41 @@ delete_exprs(Code, _, _, []) ->
   Code;
 delete_exprs(Code, ExprMap, IdMap, [ExprId|Exprs]) ->
   Expr = expr_id_map_get_expr(IdMap, ExprId),
-  %% Perform a foldl that goes through the code and deletes all
-  %% occurences of the expression.
-  NewCode =
-    lists:reverse
-      (lists:foldl(fun(CodeExpr, Acc) ->
-                     case is_expr(CodeExpr) of
-                       true ->
-                         case expr_clear_dst(CodeExpr) =:= Expr of
-                           true ->
-                             pp_debug("  Deleting:         ", []),
-                             pp_debug_instr(CodeExpr),
-                             %% Lookup expression entry.
-                             Defines = 
-                               case expr_map_lookup(ExprMap, Expr) of
-                                 {value, {_, _, Defs}} -> 
-				   Defs;
-                                 none -> 
-                                   exit({?MODULE, expr_map_lookup,
-                                         "expression missing"})
-                               end,
-                             MoveCode = 
-                               mk_expr_move_instr(hipe_rtl:defines(CodeExpr),
-						  Defines),
-                             pp_debug("    Replacing with: ", []),
-                             pp_debug_instr(MoveCode),
-                             [MoveCode|Acc];
-                           false ->
-                             [CodeExpr|Acc]
-                         end;
-		       false ->
-                             [CodeExpr|Acc]
-                     end
-                   end, 
-		   [], Code)),
+  %% Lookup expression entry.
+  {value, {_, _, Defines}} = expr_map_lookup(ExprMap, Expr),
+  %% Go through the code and deletes all occurences of the expression.
+  NewCode = delete_expr(Code, Expr, Defines, []),
   delete_exprs(NewCode, ExprMap, IdMap, Exprs).
 
+delete_expr([], _Expr, _Defines, Acc) -> lists:reverse(Acc);
+delete_expr([CodeExpr|Code], Expr, Defines, Acc) ->
+  case exp_kill_expr(CodeExpr, [Expr]) of
+    [] -> % Expr was killed; deleting stops here
+      pp_debug("  Stopping before:  ", []),
+      pp_debug_instr(CodeExpr),
+      lists:reverse(Acc, [CodeExpr|Code]);
+    [Expr] ->
+      NewCodeExpr =
+        case is_expr(CodeExpr) of
+          true ->
+            case expr_clear_dst(CodeExpr) =:= Expr of
+              true ->
+                pp_debug("  Deleting:         ", []),
+                pp_debug_instr(CodeExpr),
+                MoveCode = mk_expr_move_instr(hipe_rtl:defines(CodeExpr),
+                                              Defines),
+                pp_debug("    Replacing with: ", []),
+                pp_debug_instr(MoveCode),
+                MoveCode;
+              false ->
+                CodeExpr
+            end;
+          false ->
+            CodeExpr
+        end,
+      delete_expr(Code, Expr, Defines, [NewCodeExpr|Acc])
+  end.
+
 %%=============================================================================
 %% Goes through the given list of expressions and inserts them at 
 %% appropriate places in the code.
@@ -226,13 +225,12 @@ insert_exprs(CFG, _, _, _, _, BetweenMap, []) ->
 insert_exprs(CFG, Pred, Succ, ExprMap, IdMap, BetweenMap, [ExprId|Exprs]) ->
   Expr = expr_id_map_get_expr(IdMap, ExprId),
   Instr = expr_map_get_instr(ExprMap, Expr),
-  case hipe_rtl_cfg:succ(CFG, Pred) of
-    [_] ->
+  case try_insert_expr_last(CFG, Pred, Instr) of
+    {ok, NewCFG} ->
       pp_debug("  Inserted last: ", []),
       pp_debug_instr(Instr),
-      NewCFG = insert_expr_last(CFG, Pred, Instr),
       insert_exprs(NewCFG, Pred, Succ, ExprMap, IdMap, BetweenMap, Exprs);
-    _ ->
+    not_safe ->
       case hipe_rtl_cfg:pred(CFG, Succ) of
         [_] ->
 	  pp_debug("  Inserted first: ", []),
@@ -252,25 +250,31 @@ insert_exprs(CFG, Pred, Succ, ExprMap, IdMap, BetweenMap, [ExprId|Exprs]) ->
 %% Recursively goes through the code in a block and returns a new block
 %% with the new code inserted second to last (assuming the last expression
 %% is a branch operation).
-insert_expr_last(CFG0, Label, Instr) ->
-  Code0 = hipe_bb:code(hipe_rtl_cfg:bb(CFG0, Label)),
-  %% FIXME: Use hipe_bb:butlast() instead?
-  Code1 = insert_expr_last_work(Label, Instr, Code0),
-  hipe_rtl_cfg:bb_add(CFG0, Label, hipe_bb:mk_bb(Code1)).
+try_insert_expr_last(CFG0, Label, Instr) ->
+  case hipe_rtl_cfg:succ(CFG0, Label) of
+    [_] ->
+      Code0 = hipe_bb:code(hipe_rtl_cfg:bb(CFG0, Label)),
+      case insert_expr_last_work(Instr, Code0) of
+        not_safe -> not_safe;
+        Code1 ->
+          {ok, hipe_rtl_cfg:bb_add(CFG0, Label, hipe_bb:mk_bb(Code1))}
+      end;
+    _ -> not_safe
+  end.
 
 %%=============================================================================
 %% Recursively goes through the code in a block and returns a new block
 %% with the new code inserted second to last (assuming the last expression
 %% is a branch operation).
-insert_expr_last_work(_, Instr, []) ->
-  %% This case should not happen since this means that block was completely 
-  %% empty when the function was called. For compatibility we insert it last.
-  [Instr];
-insert_expr_last_work(_, Instr, [Code1]) ->
+insert_expr_last_work(_Instr, [#call{}]) ->
+  %% Call instructions clobber all expressions; we musn't insert the expression
+  %% before it
+  not_safe;
+insert_expr_last_work(Instr, [Code1]) ->
   %% We insert the code next to last.
   [Instr, Code1];
-insert_expr_last_work(Label, Instr, [Code|Codes]) ->
-  [Code|insert_expr_last_work(Label, Instr, Codes)].
+insert_expr_last_work(Instr, [Code|Codes]) ->
+  [Code|insert_expr_last_work(Instr, Codes)].
 
 %%=============================================================================
 %% Inserts expression first in the block for the given label.
@@ -305,7 +309,8 @@ insert_expr_between(CFG0, BetweenMap, Pred, Succ, Instr) ->
     {value, Label} ->
       pp_debug("    Using existing new bb for edge (~w,~w) with label ~w~n", 
 	       [Pred, Succ, Label]),
-      {insert_expr_last(CFG0, Label, Instr), BetweenMap}
+      {ok, NewCfg} = try_insert_expr_last(CFG0, Label, Instr),
+      {NewCfg, BetweenMap}
   end.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
diff --git a/lib/hipe/rtl/hipe_rtl_primops.erl b/lib/hipe/rtl/hipe_rtl_primops.erl
index 850a75f71b..d646b78a3d 100644
--- a/lib/hipe/rtl/hipe_rtl_primops.erl
+++ b/lib/hipe/rtl/hipe_rtl_primops.erl
@@ -291,6 +291,10 @@ gen_primop({Op,Dst,Args,Cont,Fail}, IsGuard, ConstTab) ->
 	    gen_select_msg(Dst, Cont);
 	  clear_timeout ->
 	    gen_clear_timeout(Dst, GotoCont);
+          recv_mark ->
+            gen_recv_mark(Dst, GotoCont);
+	  recv_set ->
+            gen_recv_set(Dst, Cont);
 	  set_timeout ->
 	    %% BIF call: am_set_timeout -> nbif_set_timeout -> hipe_set_timeout
 	    [hipe_rtl:mk_call(Dst, set_timeout, Args, Cont, Fail, not_remote)];
@@ -390,6 +394,8 @@ gen_primop({Op,Dst,Args,Cont,Fail}, IsGuard, ConstTab) ->
 	    end;
 	  debug_native_called -> 
 	    [hipe_rtl:mk_call(Dst, Op, Args, Cont, Fail, not_remote)];
+          build_stacktrace ->
+	    [hipe_rtl:mk_call(Dst, Op, Args, Cont, Fail, not_remote)];
 
 	  %% Only names listed above are accepted! MFA:s are not primops!
 	  _ ->
@@ -1064,6 +1070,27 @@ gen_tuple_header(Ptr, Arity) ->
 %%%
 %%% Receives
 
+%%% recv_mark is:
+%%%	p->msg.saved_last = p->msg.last;
+gen_recv_mark([], GotoCont) ->
+  TmpLast = hipe_rtl:mk_new_reg(),
+  [load_p_field(TmpLast, ?P_MSG_LAST),
+   store_p_field(TmpLast, ?P_MSG_SAVED_LAST),
+   GotoCont].
+
+%%% recv_set is:
+%%%	if (p->msg.saved_last)
+%%%	    p->msg.save = p->msg.saved_last;
+gen_recv_set([], Cont) ->
+  TmpSave = hipe_rtl:mk_new_reg(),
+  TrueLbl = hipe_rtl:mk_new_label(),
+  [load_p_field(TmpSave, ?P_MSG_SAVED_LAST),
+   hipe_rtl:mk_branch(TmpSave, ne, hipe_rtl:mk_imm(0),
+                      hipe_rtl:label_name(TrueLbl), Cont),
+   TrueLbl,
+   store_p_field(TmpSave, ?P_MSG_SAVE),
+   hipe_rtl:mk_goto(Cont)].
+
 gen_check_get_msg(Dsts, GotoCont, Fail) ->
   gen_check_get_msg_outofline(Dsts, GotoCont, Fail).
 
diff --git a/lib/hipe/rtl/hipe_rtl_varmap.erl b/lib/hipe/rtl/hipe_rtl_varmap.erl
index 375a8f85c0..f34c66ab85 100644
--- a/lib/hipe/rtl/hipe_rtl_varmap.erl
+++ b/lib/hipe/rtl/hipe_rtl_varmap.erl
@@ -105,7 +105,7 @@ icode_var2rtl_var(Var, Map) ->
 	{reg, IsGcSafe} ->
 	  NewVar =
 	    case IsGcSafe of
-	      %% true -> hipe_rtl:mk_new_reg_gcsafe();
+              true -> hipe_rtl:mk_new_reg_gcsafe();
 	      false -> hipe_rtl:mk_new_reg()
 	    end,
 	  {NewVar, insert(Var, NewVar, Map)}
diff --git a/lib/hipe/rtl/hipe_rtl_verify_gcsafe.erl b/lib/hipe/rtl/hipe_rtl_verify_gcsafe.erl
new file mode 100644
index 0000000000..c3f20bfec1
--- /dev/null
+++ b/lib/hipe/rtl/hipe_rtl_verify_gcsafe.erl
@@ -0,0 +1,88 @@
+%% -*- mode: erlang; erlang-indent-level: 2 -*-
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+-module(hipe_rtl_verify_gcsafe).
+
+-export([check/1]).
+
+-include("../flow/cfg.hrl").              %% needed for the specs
+-include("hipe_rtl.hrl").
+
+check(CFG) ->
+  Liveness = hipe_rtl_liveness:analyze(CFG),
+  put({?MODULE, 'fun'}, CFG#cfg.info#cfg_info.'fun'),
+  lists:foreach(
+    fun(Lb) ->
+        put({?MODULE, label}, Lb),
+        Liveout = hipe_rtl_liveness:liveout(Liveness, Lb),
+        BB = hipe_rtl_cfg:bb(CFG, Lb),
+        check_instrs(lists:reverse(hipe_bb:code(BB)), Liveout)
+    end, hipe_rtl_cfg:labels(CFG)),
+  erase({?MODULE, 'fun'}),
+  erase({?MODULE, label}),
+  erase({?MODULE, instr}),
+  ok.
+
+check_instrs([], _Livein) -> ok;
+check_instrs([I|Is], LiveOut) ->
+  Def = ordsets:from_list(hipe_rtl:defines(I)),
+  Use = ordsets:from_list(hipe_rtl:uses(I)),
+  LiveOver = ordsets:subtract(LiveOut, Def),
+  LiveIn = ordsets:union(LiveOver, Use),
+  case (hipe_rtl:is_call(I)
+        andalso not safe_primop(hipe_rtl:call_fun(I)))
+    orelse is_record(I, gctest)
+  of
+    false -> ok;
+    true ->
+      put({?MODULE, instr}, I),
+      lists:foreach(fun verify_live/1, LiveOver)
+  end,
+  check_instrs(Is, LiveIn).
+
+verify_live(T) ->
+  case hipe_rtl:is_reg(T) of
+    false -> ok;
+    true ->
+      case hipe_rtl:reg_is_gcsafe(T) of
+        true -> ok;
+        false ->
+          error({gcunsafe_live_over_call,
+                 get({?MODULE, 'fun'}),
+                 {label, get({?MODULE, label})},
+                 get({?MODULE, instr}),
+                 T})
+      end
+  end.
+
+%% Primops that can't gc
+%% Note: This information is essentially duplicated from hipe_bif_list.m4
+safe_primop(is_divisible) -> true;
+safe_primop(is_unicode) -> true;
+safe_primop(cmp_2) -> true;
+safe_primop(eq_2) -> true;
+safe_primop(bs_allocate) -> true;
+safe_primop(bs_reallocate) -> true;
+safe_primop(bs_utf8_size) -> true;
+safe_primop(bs_get_utf8) -> true;
+safe_primop(bs_utf16_size) -> true;
+safe_primop(bs_get_utf16) -> true;
+safe_primop(bs_validate_unicode_retract) -> true;
+safe_primop(bs_put_small_float) -> true;
+safe_primop(bs_put_bits) -> true;
+safe_primop(emasculate_binary) -> true;
+safe_primop(atomic_inc) -> true;
+%% Not noproc but manually verified
+safe_primop(bs_put_big_integer) -> true;
+safe_primop(_) -> false.
diff --git a/lib/hipe/rtl/hipe_tagscheme.erl b/lib/hipe/rtl/hipe_tagscheme.erl
index 68cbe75e85..737f0ec5e3 100644
--- a/lib/hipe/rtl/hipe_tagscheme.erl
+++ b/lib/hipe/rtl/hipe_tagscheme.erl
@@ -53,7 +53,8 @@
 -export([test_subbinary/3, test_heap_binary/3]).
 -export([create_heap_binary/3, create_refc_binary/3, create_refc_binary/4]).
 -export([create_matchstate/6, convert_matchstate/1, compare_matchstate/4]).
--export([get_field_from_term/3, get_field_from_pointer/3,
+-export([get_field_addr_from_term/3,
+	 get_field_from_term/3, get_field_from_pointer/3,
 	 set_field_from_term/3, set_field_from_pointer/3,
 	 extract_matchbuffer/2, extract_binary_bytes/2]).
 
@@ -76,6 +77,10 @@
 -define(TAG_PRIMARY_BOXED,  16#2).
 -define(TAG_PRIMARY_IMMED1, 16#3).
 
+%% Only when ?ERTS_USE_LITERAL_TAG =:= 1
+-define(TAG_PTR_MASK__,   16#7).
+-define(TAG_LITERAL_PTR,  16#4).
+
 -define(TAG_IMMED1_SIZE,  4).
 -define(TAG_IMMED1_MASK,  16#F).
 -define(TAG_IMMED1_PID,   ((16#0 bsl ?TAG_PRIMARY_SIZE) bor ?TAG_PRIMARY_IMMED1)).
@@ -157,6 +162,38 @@ tag_cons(Res, X) ->
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+ptr_val(Res, X) ->
+  hipe_rtl:mk_alu(Res, X, 'and', hipe_rtl:mk_imm(bnot ?TAG_PTR_MASK__)).
+
+%% Returns {Base, Offset, Untag}. To be used like, for example:
+%% {Base, Offset, Untag} = untag_ptr(X, ?TAG_PRIMARY_BOXED),
+%% ...
+%% [Untag, hipe_rtl:mk_load(Dst, Base, hipe_rtl:mk_imm(Offset))].
+%%
+%% NB: Base might either be X or a new temp. It must thus not be modified.
+untag_ptr(X, Tag) ->
+  case ?ERTS_USE_LITERAL_TAG of
+    0 ->
+      {X, -Tag, []};
+    1 ->
+      Base = hipe_rtl:mk_new_reg(),
+      Untag = ptr_val(Base, X),
+      {Base, 0, Untag}
+  end.
+
+untag_ptr_nooffset(Dst, X, Tag) ->
+  %% We could just use ptr_val in all cases, but subtraction can use LEA on x86
+  %% and can be inlined into effective address computations on several
+  %% architectures.
+  case ?ERTS_USE_LITERAL_TAG of
+    0 ->
+      hipe_rtl:mk_alu(Dst, X, 'sub', hipe_rtl:mk_imm(Tag));
+    1 ->
+      ptr_val(Dst, X)
+  end.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
 %%% Operations to test if an object has a known type T.
 
 test_nil(X, TrueLab, FalseLab, Pred) ->
@@ -171,7 +208,8 @@ test_is_boxed(X, TrueLab, FalseLab, Pred) ->
   hipe_rtl:mk_branch(X, 'and', Mask, 'eq', TrueLab, FalseLab, Pred).
 
 get_header(Res, X) ->
-  hipe_rtl:mk_load(Res, X, hipe_rtl:mk_imm(-(?TAG_PRIMARY_BOXED))).
+  {Base, Offset, Untag} = untag_ptr(X, ?TAG_PRIMARY_BOXED),
+  [Untag, hipe_rtl:mk_load(Res, Base, hipe_rtl:mk_imm(Offset))].
 
 mask_and_compare(X, Mask, Value, TrueLab, FalseLab, Pred) ->
   Tmp = hipe_rtl:mk_new_reg_gcsafe(),
@@ -617,21 +655,25 @@ test_either_immed(Arg1, Arg2, TrueLab, FalseLab) ->
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 unsafe_car(Dst, Arg) ->
-  hipe_rtl:mk_load(Dst, Arg, hipe_rtl:mk_imm(-(?TAG_PRIMARY_LIST))).
+  {Base, Offset, Untag} = untag_ptr(Arg, ?TAG_PRIMARY_LIST),
+  [Untag, hipe_rtl:mk_load(Dst, Base, hipe_rtl:mk_imm(Offset))].
 
 unsafe_cdr(Dst, Arg) ->
+  {Base, Offset, Untag} = untag_ptr(Arg, ?TAG_PRIMARY_LIST),
   WordSize = hipe_rtl_arch:word_size(),
-  hipe_rtl:mk_load(Dst, Arg, hipe_rtl:mk_imm(-(?TAG_PRIMARY_LIST)+WordSize)).
+  [Untag, hipe_rtl:mk_load(Dst, Base, hipe_rtl:mk_imm(Offset+WordSize))].
 
 unsafe_constant_element(Dst, Index, Tuple) ->	% Index is an immediate
   WordSize = hipe_rtl_arch:word_size(),
-  Offset = -(?TAG_PRIMARY_BOXED) + WordSize * hipe_rtl:imm_value(Index),
-  hipe_rtl:mk_load(Dst, Tuple, hipe_rtl:mk_imm(Offset)).
+  {Base, Offset0, Untag} = untag_ptr(Tuple, ?TAG_PRIMARY_BOXED),
+  Offset = Offset0 + WordSize * hipe_rtl:imm_value(Index),
+  [Untag, hipe_rtl:mk_load(Dst, Base, hipe_rtl:mk_imm(Offset))].
 
 unsafe_update_element(Tuple, Index, Value) ->   % Index is an immediate
   WordSize = hipe_rtl_arch:word_size(),
-  Offset = -(?TAG_PRIMARY_BOXED) + WordSize * hipe_rtl:imm_value(Index),
-  hipe_rtl:mk_store(Tuple, hipe_rtl:mk_imm(Offset), Value).
+  {Base, Offset0, Untag} = untag_ptr(Tuple, ?TAG_PRIMARY_BOXED),
+  Offset = Offset0 + WordSize * hipe_rtl:imm_value(Index),
+  [Untag, hipe_rtl:mk_store(Base, hipe_rtl:mk_imm(Offset), Value)].
 
 %%% wrong semantics
 %% unsafe_variable_element(Dst, Index, Tuple) -> % Index is an unknown fixnum
@@ -644,10 +686,12 @@ unsafe_update_element(Tuple, Index, Value) ->   % Index is an immediate
 %%     Tmp1 = hipe_rtl:mk_new_reg_gcsafe(),
 %%     Tmp2 = hipe_rtl:mk_new_reg_gcsafe(),
 %%     Shift = ?TAG_IMMED1_SIZE - 2,
-%%     OffAdj = (?TAG_IMMED1_SMALL bsr Shift) + ?TAG_PRIMARY_BOXED,
+%%     {Base, Off0, Untag} = untag_ptr(Tuple, ?TAG_PRIMARY_BOXED),
+%%     OffAdj = (?TAG_IMMED1_SMALL bsr Shift) - Off0,
 %%     [hipe_rtl:mk_alu(Tmp1, Index, 'srl', hipe_rtl:mk_imm(Shift)),
 %%      hipe_rtl:mk_alu(Tmp2, Tmp1, 'sub', hipe_rtl:mk_imm(OffAdj)),
-%%      hipe_rtl:mk_load(Dst, Tuple, Tmp2)].
+%%      Untag,
+%%      hipe_rtl:mk_load(Base, Tuple, Tmp2)].
 
 element(Dst, Index, Tuple, FailLabName, {tuple, A}, IndexInfo) ->
   FixnumOkLab = hipe_rtl:mk_new_label(),
@@ -660,7 +704,7 @@ element(Dst, Index, Tuple, FailLabName, {tuple, A}, IndexInfo) ->
       Offset = hipe_rtl:mk_new_reg_gcsafe(),
       Ptr = hipe_rtl:mk_new_reg(), % offset from Tuple
       [untag_fixnum(UIndex, Index),
-       hipe_rtl:mk_alu(Ptr, Tuple, 'sub', hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED)),
+       untag_ptr_nooffset(Ptr, Tuple, ?TAG_PRIMARY_BOXED),
        hipe_rtl:mk_alu(Offset, UIndex, 'sll', 
 		       hipe_rtl:mk_imm(hipe_rtl_arch:log2_word_size())),
        hipe_rtl:mk_load(Dst, Ptr, Offset)];
@@ -769,7 +813,7 @@ gen_element_tail(Dst, Tuple, Arity, UIndex, FailLabName, IndexOkLab) ->
    hipe_rtl:mk_branch(ZeroIndex, 'geu', Arity, FailLabName,
 		      hipe_rtl:label_name(IndexOkLab), 0.01),
    IndexOkLab,
-   hipe_rtl:mk_alu(Ptr, Tuple, 'sub', hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED)),
+   untag_ptr_nooffset(Ptr, Tuple, ?TAG_PRIMARY_BOXED),
    hipe_rtl:mk_alu(Offset, UIndex, 'sll',
                    hipe_rtl:mk_imm(hipe_rtl_arch:log2_word_size())),
    hipe_rtl:mk_load(Dst, Ptr, Offset)].
@@ -777,11 +821,13 @@ gen_element_tail(Dst, Tuple, Arity, UIndex, FailLabName, IndexOkLab) ->
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 unsafe_closure_element(Dst, Index, Closure) ->	% Index is an immediate
-  Offset = -(?TAG_PRIMARY_BOXED)    %% Untag
+  %% XXX: Can there even be closure literals?
+  {Base, Offset0, Untag} = untag_ptr(Closure, ?TAG_PRIMARY_BOXED),
+  Offset = Offset0                  %% Untag
     + ?EFT_ENV                      %% Field offset
                                     %% Index from 1 to N hence -1)
     + (hipe_rtl_arch:word_size() * (hipe_rtl:imm_value(Index)-1)),
-  hipe_rtl:mk_load(Dst, Closure, hipe_rtl:mk_imm(Offset)).
+  [Untag, hipe_rtl:mk_load(Dst, Base, hipe_rtl:mk_imm(Offset))].
 
 mk_fun_header() ->
   hipe_rtl:mk_imm(?HEADER_FUN).
@@ -790,7 +836,7 @@ tag_fun(Res, X) ->
   tag_boxed(Res, X).
 
 %% untag_fun(Res, X) ->
-%%   hipe_rtl:mk_alu(Res, X, 'sub', hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED)).
+%%   untag_ptr_nooffset(Res, X, ?TAG_PRIMARY_BOXED).
 
 if_fun_get_arity_and_address(ArityReg, AddressReg, FunP, BadFunLab, Pred) ->
   %% EmuAddressPtrReg = hipe_rtl:mk_new_reg(),
@@ -801,15 +847,15 @@ if_fun_get_arity_and_address(ArityReg, AddressReg, FunP, BadFunLab, Pred) ->
   TrueLab0 = hipe_rtl:mk_new_label(),
   %% TrueLab1 = hipe_rtl:mk_new_label(),
   IsFunCode = test_closure(FunP, hipe_rtl:label_name(TrueLab0), BadFunLab, Pred),
+  {Base, Offset, Untag} = untag_ptr(FunP, ?TAG_PRIMARY_BOXED),
   GetArityCode =
     [TrueLab0,
      %% Funp->arity contains the arity
-     hipe_rtl:mk_load(ArityReg, FunP,
-		      hipe_rtl:mk_imm(-(?TAG_PRIMARY_BOXED)+
-				      ?EFT_ARITY)),
-     hipe_rtl:mk_load(FEPtrReg, FunP,
-		      hipe_rtl:mk_imm(-(?TAG_PRIMARY_BOXED)+
-				      ?EFT_FE)),
+     Untag,
+     hipe_rtl:mk_load(ArityReg, Base,
+		      hipe_rtl:mk_imm(Offset+?EFT_ARITY)),
+     hipe_rtl:mk_load(FEPtrReg, Base,
+		      hipe_rtl:mk_imm(Offset+?EFT_FE)),
      hipe_rtl:mk_load(AddressReg, FEPtrReg,
 		      hipe_rtl:mk_imm(?EFE_NATIVE_ADDRESS))],
   IsFunCode ++ GetArityCode.
@@ -927,20 +973,24 @@ test_subbinary(Binary, TrueLblName, FalseLblName) ->
 
 unsafe_load_float(DstLo, DstHi, Src) ->
   WordSize = hipe_rtl_arch:word_size(),
-  Offset1 = -(?TAG_PRIMARY_BOXED) + WordSize,
+  {Base, Offset0, Untag} = untag_ptr(Src, ?TAG_PRIMARY_BOXED),
+  Offset1 = Offset0 + WordSize,
   Offset2 = Offset1 + 4, %% This should really be 4 and not WordSize
   case hipe_rtl_arch:endianess() of
     little ->
-      [hipe_rtl:mk_load(DstLo, Src, hipe_rtl:mk_imm(Offset1), int32, unsigned),
-       hipe_rtl:mk_load(DstHi, Src, hipe_rtl:mk_imm(Offset2), int32, unsigned)];
+      [Untag,
+       hipe_rtl:mk_load(DstLo, Base, hipe_rtl:mk_imm(Offset1), int32, unsigned),
+       hipe_rtl:mk_load(DstHi, Base, hipe_rtl:mk_imm(Offset2), int32, unsigned)];
     big ->
-      [hipe_rtl:mk_load(DstHi, Src, hipe_rtl:mk_imm(Offset1), int32, unsigned),
-       hipe_rtl:mk_load(DstLo, Src, hipe_rtl:mk_imm(Offset2), int32, unsigned)]
+      [Untag,
+       hipe_rtl:mk_load(DstHi, Base, hipe_rtl:mk_imm(Offset1), int32, unsigned),
+       hipe_rtl:mk_load(DstLo, Base, hipe_rtl:mk_imm(Offset2), int32, unsigned)]
   end. 
 
 unsafe_untag_float(Dst, Src) ->
-  Offset = -(?TAG_PRIMARY_BOXED) + hipe_rtl_arch:word_size(),
-  [hipe_rtl:mk_fload(Dst, Src, hipe_rtl:mk_imm(Offset))].
+  {Base, Offset0, Untag} = untag_ptr(Src, ?TAG_PRIMARY_BOXED),
+  Offset = Offset0 + hipe_rtl_arch:word_size(),
+  [Untag, hipe_rtl:mk_fload(Dst, Base, hipe_rtl:mk_imm(Offset))].
 
 unsafe_tag_float(Dst, Src) ->
   {GetHPInsn, HP, PutHPInsn} = hipe_rtl_arch:heap_pointer(),
@@ -999,8 +1049,9 @@ get_one_word_pos_bignum(USize, Size, Fail) ->
 
 unsafe_get_one_word_pos_bignum(USize, Size) ->
   WordSize = hipe_rtl_arch:word_size(),
-  Imm = hipe_rtl:mk_imm(1*WordSize-?TAG_PRIMARY_BOXED),
-  [hipe_rtl:mk_load(USize, Size, Imm)].
+  {Base, Offset, Untag} = untag_ptr(Size, ?TAG_PRIMARY_BOXED),
+  Imm = hipe_rtl:mk_imm(1*WordSize+Offset),
+  [Untag, hipe_rtl:mk_load(USize, Base, Imm)].
 
 -spec bignum_sizeneed(non_neg_integer()) -> non_neg_integer().
 
@@ -1040,7 +1091,7 @@ create_matchstate(Max, BinSize, Base, Offset, Orig, Ms) ->
   SizeInWords = ((ByteSize div WordSize) - 1),
   Header = hipe_rtl:mk_imm(mk_header(SizeInWords, ?TAG_HEADER_BIN_MATCHSTATE)),
   [GetHPInsn,
-   hipe_rtl:mk_alu(Ms, HP, add, hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED)),
+   tag_boxed(Ms, HP),
    set_field_from_term({matchstate,thing_word}, Ms, Header),
    set_field_from_term({matchstate,{matchbuffer,orig}}, Ms, Orig),
    set_field_from_term({matchstate,{matchbuffer,base}}, Ms, Base),
@@ -1078,7 +1129,10 @@ convert_matchstate(Ms) ->
    size_from_header(SizeInWords, Header),
    hipe_rtl:mk_alu(Hole, SizeInWords, sub, hipe_rtl:mk_imm(?SUB_BIN_WORDSIZE)),
    mk_var_header(BigIntHeader, Hole, ?TAG_HEADER_POS_BIG),
-   hipe_rtl:mk_store(Ms, hipe_rtl:mk_imm(?SUB_BIN_WORDSIZE*WordSize-?TAG_PRIMARY_BOXED),
+   %% Matchstates can't be literals; so untagging with ?TAG_PRIMARY_BOXED is
+   %% fine here
+   hipe_rtl:mk_store(Ms, hipe_rtl:mk_imm(?SUB_BIN_WORDSIZE*WordSize
+                                         -?TAG_PRIMARY_BOXED),
 		     BigIntHeader)].
 
 compare_matchstate(Max, Ms, LargeEnough, TooSmall) ->
@@ -1087,8 +1141,10 @@ compare_matchstate(Max, Ms, LargeEnough, TooSmall) ->
   SizeInWords = ((ByteSize div WordSize) - 1),
   Header = hipe_rtl:mk_imm(mk_header(SizeInWords, ?TAG_HEADER_BIN_MATCHSTATE)),
   RealHeader = hipe_rtl:mk_new_reg_gcsafe(),
-   [hipe_rtl:mk_load(RealHeader, Ms, hipe_rtl:mk_imm(-?TAG_PRIMARY_BOXED)),
-    hipe_rtl:mk_branch(RealHeader, ge, Header, LargeEnough, TooSmall)].
+  %% Matchstates can't be literals; so untagging with ?TAG_PRIMARY_BOXED is fine
+  %% here
+  [hipe_rtl:mk_load(RealHeader, Ms, hipe_rtl:mk_imm(-?TAG_PRIMARY_BOXED)),
+   hipe_rtl:mk_branch(RealHeader, ge, Header, LargeEnough, TooSmall)].
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%
@@ -1207,15 +1263,22 @@ get_field_size1({matchbuffer, base}) ->
 get_field_size1({matchbuffer, binsize}) ->  
   ?MB_SIZE_SIZE.
 
+get_field_addr_from_term(Struct, Term, Dst) ->
+  {Base, Offset0, Untag} = untag_ptr(Term, ?TAG_PRIMARY_BOXED),
+  Offset = hipe_rtl:mk_imm(get_field_offset(Struct) + Offset0),
+  [Untag, hipe_rtl:mk_alu(Dst, Base, add, Offset)].
+
 get_field_from_term(Struct, Term, Dst) ->
-  Offset = hipe_rtl:mk_imm(get_field_offset(Struct) - ?TAG_PRIMARY_BOXED),
+  {Base, Offset0, Untag} = untag_ptr(Term, ?TAG_PRIMARY_BOXED),
+  Offset = hipe_rtl:mk_imm(get_field_offset(Struct) + Offset0),
   Size = get_field_size(Struct),
-  hipe_rtl:mk_load(Dst, Term, Offset, Size, unsigned). 
+  [Untag, hipe_rtl:mk_load(Dst, Base, Offset, Size, unsigned)].
 
 set_field_from_term(Struct, Term, Value) ->
-  Offset = hipe_rtl:mk_imm(get_field_offset(Struct) - ?TAG_PRIMARY_BOXED),
+  {Base, Offset0, Untag} = untag_ptr(Term, ?TAG_PRIMARY_BOXED),
+  Offset = hipe_rtl:mk_imm(get_field_offset(Struct) + Offset0),
   Size = get_field_size(Struct),
-  hipe_rtl:mk_store(Term, Offset, Value, Size).
+  [Untag, hipe_rtl:mk_store(Base, Offset, Value, Size)].
 
 get_field_from_pointer(Struct, Term, Dst) ->
   Offset = hipe_rtl:mk_imm(get_field_offset(Struct)),
@@ -1229,6 +1292,8 @@ set_field_from_pointer(Struct, Term, Value) ->
   
 extract_matchbuffer(Mb, Ms) ->
   What = {matchstate, matchbuffer},
+  %% Matchstates can't be literals; so untagging with ?TAG_PRIMARY_BOXED is fine
+  %% here
   Offset = hipe_rtl:mk_imm(get_field_offset(What) - ?TAG_PRIMARY_BOXED),
   hipe_rtl:mk_alu(Mb, Ms, add, Offset).
 
diff --git a/lib/hipe/ssa/hipe_ssa.inc b/lib/hipe/ssa/hipe_ssa.inc
index c7c1a8e1d7..29e8b92266 100644
--- a/lib/hipe/ssa/hipe_ssa.inc
+++ b/lib/hipe/ssa/hipe_ssa.inc
@@ -463,20 +463,20 @@ updateStatementDefs([], Statement, Current, Acc) ->
 %%----------------------------------------------------------------------
 
 updateIndices(Current, Variable) ->
-  case ?CODE:is_var(Variable) of
-    true ->
-      NewVar = ?CODE:mk_new_var(),
-      {NewVar,gb_trees:enter(Variable, NewVar, Current)};
-    false ->
-      case is_fp_temp(Variable) of
-	true ->
-	  NewFVar = mk_new_fp_temp(),
-	  {NewFVar,gb_trees:enter(Variable, NewFVar, Current)};
-	false ->
-	  NewReg = ?CODE:mk_new_reg(),
-	  {NewReg,gb_trees:enter(Variable, NewReg, Current)}
-      end
-  end.
+  New =
+    case ?CODE:is_var(Variable) of
+      true -> ?CODE:mk_new_var();
+      false ->
+        case is_fp_temp(Variable) of
+          true -> mk_new_fp_temp();
+          false ->
+            case ?CODE:reg_is_gcsafe(Variable) of
+              true -> ?CODE:mk_new_reg_gcsafe();
+              false -> ?CODE:mk_new_reg()
+            end
+        end
+    end,
+  {New, gb_trees:enter(Variable, New, Current)}.
 
 %%----------------------------------------------------------------------
 %% Procedure : updateSuccPhi/4
diff --git a/lib/hipe/test/basic_SUITE_data/basic_exceptions.erl b/lib/hipe/test/basic_SUITE_data/basic_exceptions.erl
index 229a0516dc..d71b924d22 100644
--- a/lib/hipe/test/basic_SUITE_data/basic_exceptions.erl
+++ b/lib/hipe/test/basic_SUITE_data/basic_exceptions.erl
@@ -6,12 +6,13 @@
 %%%-------------------------------------------------------------------
 -module(basic_exceptions).
 
--export([test/0, test_catches/0]).
+-export([test/0]).
 
 %% functions used as arguments to spawn/3
 -export([bad_guy/2]).
 
 test() ->
+  ok = test_catches(),
   ok = test_catch_exit(42),
   ok = test_catch_throw(42),
   ok = test_catch_element(),
@@ -22,6 +23,7 @@ test() ->
   ok = test_pending_errors(),
   ok = test_bad_fun_call(),
   ok = test_guard_bif(),
+  ok = test_eclectic(),
   ok.
 
 %%--------------------------------------------------------------------
@@ -463,3 +465,117 @@ guard_bif('node/0', X, Y) when node() == Y ->
   {'node/0', X, Y};
 guard_bif('node/1', X, Y) when node(X) == Y ->
   {'node/1', X, Y}.
+
+%%--------------------------------------------------------------------
+%% Taken from trycatch_SUITE.erl (compiler test suite).
+%%
+%% Cases that are commented out contain exception information that was
+%% added to Erlang/OTP in commit e8d45ae14c6c3bdfcbbc7964228b004ef4f11ea6
+%% (May 2017) only in the BEAM emulator.  Thus, part of this test fails
+%% when compiled in native code.
+%% The remaining cases are uncommented so that they are properly tested
+%% in native code too.
+%%--------------------------------------------------------------------
+
+test_eclectic() ->
+  V = {make_ref(),3.1415926535,[[]|{}]},
+  {{value,{value,V},V},V} =
+    eclectic_1({foo,{value,{value,V}}}, undefined, {value,V}),
+  {{'EXIT',{V,[{?MODULE,foo,1,_}|_]}},V} =
+    eclectic_1({catch_foo,{error,V}}, undefined, {value,V}),
+  {{error,{exit,V},{'EXIT',V}},V} =
+    eclectic_1({foo,{error,{exit,V}}}, error, {value,V}),
+  %% {{value,{value,V},V},
+  %%        {'EXIT',{badarith,[{erlang,'+',[0,a],_},{?MODULE,my_add,2,_}|_]}}} =
+  %%     eclectic_1({foo,{value,{value,V}}}, undefined, {'add',{0,a}}),
+  {{'EXIT',V},V} =
+    eclectic_1({catch_foo,{exit,V}}, undefined, {throw,V}),
+  %% {{error,{'div',{1,0}},{'EXIT',{badarith,[{erlang,'div',[1,0],_},{?MODULE,my_div,2,_}|_]}}},
+  %%        {'EXIT',V}} =
+  %%     eclectic_1({foo,{error,{'div',{1,0}}}}, error, {exit,V}),
+  {{{error,V},{'EXIT',{V,[{?MODULE,foo,1,_}|_]}}},
+   {'EXIT',V}} =
+    eclectic_1({catch_foo,{throw,{error,V}}}, undefined, {exit,V}),
+  %%
+  {{value,{value,{value,V},V}},V} =
+    eclectic_2({value,{value,V}}, undefined, {value,V}),
+  {{value,{throw,{value,V},V}},V} =
+    eclectic_2({throw,{value,V}}, throw, {value,V}),
+  {{caught,{'EXIT',V}},undefined} =
+    eclectic_2({value,{value,V}}, undefined, {exit,V}),
+  {{caught,{'EXIT',{V,[{?MODULE,foo,1,_}|_]}}},undefined} =
+    eclectic_2({error,{value,V}}, throw, {error,V}),
+  %% The following fails in native code
+  %% %% {{caught,{'EXIT',{badarg,[{erlang,abs,[V],_}|_]}}},V} =
+  %% %%     eclectic_2({value,{'abs',V}}, undefined, {value,V}),
+  %% {{caught,{'EXIT',{badarith,[{erlang,'+',[0,a],_},{?MODULE,my_add,2,_}|_]}}},V} =
+  %%     eclectic_2({exit,{'add',{0,a}}}, exit, {value,V}),
+  {{caught,{'EXIT',V}},undefined} =
+    eclectic_2({value,{error,V}}, undefined, {exit,V}),
+  {{caught,{'EXIT',{V,[{?MODULE,foo,1,_}|_]}}},undefined} =
+    eclectic_2({throw,{'div',{1,0}}}, throw, {error,V}),
+  ok.
+
+eclectic_1(X, C, Y) ->
+  erase(eclectic),
+  Done = make_ref(),
+  Try =
+    try case X of
+          {catch_foo,V} -> catch {Done,foo(V)};
+          {foo,V} -> {Done,foo(V)}
+        end of
+        {Done,D} -> {value,D,catch foo(D)};
+        {'EXIT',_}=Exit -> Exit;
+        D -> {D,catch foo(D)}
+    catch
+      C:D -> {C,D,catch foo(D)}
+    after
+      put(eclectic, catch foo(Y))
+    end,
+  {Try,erase(eclectic)}.
+
+eclectic_2(X, C, Y) ->
+  Done = make_ref(),
+  erase(eclectic),
+  Catch =
+    case
+      catch
+        {Done,
+         try foo(X) of
+             V -> {value,V,foo(V)}
+         catch
+           C:D -> {C,D,foo(D)}
+         after
+           put(eclectic, foo(Y))
+         end} of
+        {Done,Z} -> {value,Z};
+        Z -> {caught,Z}
+      end,
+  {Catch,erase(eclectic)}.
+
+foo({value,Value}) -> Value;
+foo({'div',{A,B}}) ->
+  my_div(A, B);
+foo({'add',{A,B}}) ->
+  my_add(A, B);
+foo({'abs',X}) ->
+  my_abs(X);
+foo({error,Error}) ->
+  erlang:error(Error);
+foo({throw,Throw}) ->
+  erlang:throw(Throw);
+foo({exit,Exit}) ->
+  erlang:exit(Exit);
+foo({raise,{Class,Reason}}) ->
+  erlang:raise(Class, Reason);
+foo(Term) when not is_atom(Term) -> Term.
+%%foo(Atom) when is_atom(Atom) -> % must not be defined!
+
+my_div(A, B) ->
+  A div B.
+
+my_add(A, B) ->
+  A + B.
+
+my_abs(X) ->
+  abs(X).
diff --git a/lib/hipe/test/basic_SUITE_data/basic_receive.erl b/lib/hipe/test/basic_SUITE_data/basic_receive.erl
index 5f865d7b7a..20e3f350e8 100644
--- a/lib/hipe/test/basic_SUITE_data/basic_receive.erl
+++ b/lib/hipe/test/basic_SUITE_data/basic_receive.erl
@@ -12,6 +12,7 @@ test() ->
   ok = test_wait_timeout(),
   ok = test_double_timeout(),
   ok = test_reschedule(),
+  ok = test_recv_mark(),
   ok.
 
 %%--------------------------------------------------------------------
@@ -54,3 +55,91 @@ doit(First) ->
   erts_debug:set_internal_state(hipe_test_reschedule_suspend, 1).
 
 %%--------------------------------------------------------------------
+%% Check that we cannot cause a recv_mark,recv_set pair to misbehave and
+%% deadlock the process.
+
+test_recv_mark() ->
+  ok = test_recv_mark(fun disturber_nop/0),
+  ok = test_recv_mark(fun disturber_receive/0),
+  ok = test_recv_mark(fun disturber_other/0),
+  ok = test_recv_mark(fun disturber_recurse/0),
+  ok = test_recv_mark_after(self(), fun disturber_after_recurse/0, false),
+  ok = test_recv_mark(fun disturber_other_recurse/0),
+  ok = test_recv_mark(fun disturber_other_after/0),
+  ok = test_recv_mark_nested().
+
+test_recv_mark(Disturber) ->
+  Ref = make_ref(),
+  self() ! Ref,
+  Disturber(),
+  receive Ref -> ok
+  after 0 -> error(failure)
+  end.
+
+disturber_nop() -> ok.
+
+disturber_receive() ->
+  self() ! message,
+  receive message -> ok end.
+
+disturber_other() ->
+  Ref = make_ref(),
+  self() ! Ref,
+  receive Ref -> ok end.
+
+disturber_recurse() ->
+  aborted = (catch test_recv_mark(fun() -> throw(aborted) end)),
+  ok.
+
+test_recv_mark_after(Recipient, Disturber, IsInner) ->
+  Ref = make_ref(),
+  Recipient ! Ref,
+  Disturber(),
+  receive
+      Ref -> ok
+  after 0 ->
+          case IsInner of
+              true -> expected;
+              false -> error(failure)
+          end
+  end.
+
+disturber_after_recurse() ->
+  NoOp = fun() -> ok end,
+  BlackHole = spawn(NoOp),
+  expected = test_recv_mark_after(BlackHole, NoOp, true),
+  ok.
+
+disturber_other_recurse() ->
+  aborted = (catch disturber_other_recurse(fun() -> throw(aborted) end)),
+  ok.
+
+disturber_other_recurse(InnerD) ->
+  Ref = make_ref(),
+  self() ! Ref,
+  InnerD(),
+  receive Ref -> ok
+  after 0 -> error(failure)
+  end.
+
+disturber_other_after() ->
+  BlackHole = spawn(fun() -> ok end),
+  Ref = make_ref(),
+  BlackHole ! Ref,
+  receive Ref -> error(imposible)
+  after 0 -> ok
+  end.
+
+test_recv_mark_nested() ->
+  Ref1 = make_ref(),
+  self() ! Ref1,
+  begin
+    Ref2 = make_ref(),
+    self() ! Ref2,
+    receive Ref2 -> ok end
+  end,
+  receive Ref1 -> ok
+  after 0 -> error(failure)
+  end.
+
+%%--------------------------------------------------------------------
diff --git a/lib/hipe/test/hipe_testsuite_driver.erl b/lib/hipe/test/hipe_testsuite_driver.erl
index ee9c57a908..8813af5dfc 100644
--- a/lib/hipe/test/hipe_testsuite_driver.erl
+++ b/lib/hipe/test/hipe_testsuite_driver.erl
@@ -161,7 +161,8 @@ run(TestCase, Dir, _OutDir) ->
     %% 		  end, DataFiles),
     %% try
     ok = TestCase:test(),
-    HiPEOpts = try TestCase:hipe_options() catch error:undef -> [] end,
+    HiPEOpts0 = try TestCase:hipe_options() catch error:undef -> [] end,
+    HiPEOpts = HiPEOpts0 ++ hipe_options(),
     {ok, TestCase} = hipe:c(TestCase, HiPEOpts),
     ok = TestCase:test(),
     {ok, TestCase} = hipe:c(TestCase, [o1|HiPEOpts]),
@@ -179,3 +180,6 @@ run(TestCase, Dir, _OutDir) ->
     %% 	lists:foreach(fun (DF) -> ok end, % = file:delete(DF) end,
     %% 		      [filename:join(OutDir, D) || D <- DataFiles])
     %% end.
+
+hipe_options() ->
+    [verify_gcsafe].
diff --git a/lib/hipe/vsn.mk b/lib/hipe/vsn.mk
index f88d9147b1..508ec00548 100644
--- a/lib/hipe/vsn.mk
+++ b/lib/hipe/vsn.mk
@@ -1 +1 @@
-HIPE_VSN = 3.16.1
+HIPE_VSN = 3.17
diff --git a/lib/ic/doc/src/Makefile b/lib/ic/doc/src/Makefile
index 19f12ac6b9..118f42b605 100644
--- a/lib/ic/doc/src/Makefile
+++ b/lib/ic/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 1998-2016. All Rights Reserved.
+# Copyright Ericsson AB 1998-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -49,8 +49,7 @@ XML_REF3_FILES = ic.xml \
 	 	  ic_clib.xml \
 		  ic_c_protocol.xml
 
-XML_PART_FILES = part.xml \
-	 part_notes.xml
+XML_PART_FILES = part.xml
 
 XML_CHAPTER_FILES = \
 	ch_introduction.xml \
@@ -68,13 +67,9 @@ XML_CHAPTER_FILES = \
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
-GIF_FILES = \
-	book.gif \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif
+GIF_FILES =
 
 # ----------------------------------------------------
 
@@ -82,7 +77,7 @@ HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
 	$(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html)
 
 INFO_FILE = ../../info
-EXTRA_FILES = summary.html.src \
+EXTRA_FILES = \
 	$(DEFAULT_GIF_FILES) \
 	$(DEFAULT_HTML_FILES) \
 	$(XML_REF3_FILES:%.xml=$(HTMLDIR)/%.html) \
@@ -161,12 +156,12 @@ JAVADOC_GENERATED_FILES = $(JAVADOC_PACK_HTML_FILES) $(JAVADOC_INDEX_HTML_FILES)
 
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
 CLASSPATH = $(JAVA_SRC_ROOT):$(JAVA_INCL_ROOT)
 
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 JAVADOCFLAGS = \
 	-classpath $(CLASSPATH) \
 	-d ../doc/html/java \
@@ -197,7 +192,7 @@ clean clean_docs:
 	rm -rf $(HTMLDIR)/*
 	rm -f $(MAN3DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 $(JAVADOC_GENERATED_FILES): JAVADOC-GENERATED
 
@@ -212,12 +207,12 @@ gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 $(INDEX_TARGET): $(INDEX_SRC) ../../vsn.mk
 	sed -e 's;%VSN%;$(VSN);' $< > $@
 
-debug opt: 
+debug opt:
 
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/ic/doc/src/book.gif b/lib/ic/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/ic/doc/src/book.gif
+++ /dev/null
diff --git a/lib/ic/doc/src/fascicules.xml b/lib/ic/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/ic/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/ic/doc/src/ic.gif b/lib/ic/doc/src/ic.gif
deleted file mode 100644
index d78cf7d8ed..0000000000
--- a/lib/ic/doc/src/ic.gif
+++ /dev/null
diff --git a/lib/ic/doc/src/notes.gif b/lib/ic/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/ic/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/ic/doc/src/notes.xml b/lib/ic/doc/src/notes.xml
index ea8bf758cf..fc68ec386c 100644
--- a/lib/ic/doc/src/notes.xml
+++ b/lib/ic/doc/src/notes.xml
@@ -31,7 +31,22 @@
     <file>notes.xml</file>
   </header>
 
-   <section><title>IC 4.4.2</title>
+   <section><title>IC 4.4.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>IC 4.4.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
diff --git a/lib/ic/doc/src/part_notes.xml b/lib/ic/doc/src/part_notes.xml
deleted file mode 100644
index 305b2c558d..0000000000
--- a/lib/ic/doc/src/part_notes.xml
+++ /dev/null
@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>1998</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Idl Compiler Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date>1998-05-06</date>
-    <rev>2.1</rev>
-  </header>
-  <description>
-    <p>The IDL
-      Compiler Application is an Erlang implementation of a compiler for the IDL language.
-      </p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/ic/doc/src/ref_man.gif b/lib/ic/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/ic/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/ic/doc/src/summary.html.src b/lib/ic/doc/src/summary.html.src
deleted file mode 100644
index cb92e51791..0000000000
--- a/lib/ic/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-IDL compiler
diff --git a/lib/ic/doc/src/user_guide.gif b/lib/ic/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/ic/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/ic/vsn.mk b/lib/ic/vsn.mk
index f0e5e7c266..b9f1ef7f20 100644
--- a/lib/ic/vsn.mk
+++ b/lib/ic/vsn.mk
@@ -1 +1 @@
-IC_VSN = 4.4.2
+IC_VSN = 4.4.3
diff --git a/lib/inets/doc/src/Makefile b/lib/inets/doc/src/Makefile
index cb71fbeb9c..cbfa5c9e30 100644
--- a/lib/inets/doc/src/Makefile
+++ b/lib/inets/doc/src/Makefile
@@ -39,6 +39,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
 XML_APPLICATION_FILES = ref_man.xml
 
 XML_CHAPTER_FILES = \
+	introduction.xml \
 	inets_services.xml \
 	http_client.xml \
 	http_server.xml \
@@ -58,7 +59,7 @@ XML_REF3_FILES = \
 	mod_alias.xml \
 	mod_auth.xml \
 	mod_esi.xml \
-	mod_security.xml	
+	mod_security.xml
 
 XML_PART_FILES = \
 	part.xml
@@ -83,7 +84,7 @@ HTML_FILES = \
 	$(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html)
 
 INFO_FILE = ../../info
-EXTRA_FILES = summary.html.src \
+EXTRA_FILES = \
 	$(XML_REF3_FILES:%.xml=$(HTMLDIR)/%.html) \
 	$(XML_REF6_FILES:%.xml=$(HTMLDIR)/%.html) \
 	$(XML_CHAPTER_FILES:%.xml=$(HTMLDIR)/%.html)
@@ -95,10 +96,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -119,25 +120,25 @@ html: gifs $(HTML_REF_MAN_FILE)
 clean clean_docs: clean_html clean_man clean_pdf
 	rm -f errs core *~
 
-man: $(MAN3_FILES) 
+man: $(MAN3_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
-clean_pdf: 
+clean_pdf:
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
 
-clean_html: 
+clean_html:
 	rm -rf $(TOP_HTML_FILES) $(HTMLDIR)/*
 
 clean_man:
-	rm -f $(MAN3_FILES) 
+	rm -f $(MAN3_FILES)
 
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/inets/doc/src/book.gif b/lib/inets/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/inets/doc/src/book.gif
+++ /dev/null
diff --git a/lib/inets/doc/src/fascicules.xml b/lib/inets/doc/src/fascicules.xml
deleted file mode 100644
index c075478967..0000000000
--- a/lib/inets/doc/src/fascicules.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
-
diff --git a/lib/inets/doc/src/httpc.xml b/lib/inets/doc/src/httpc.xml
index 29e4b22632..58714328c5 100644
--- a/lib/inets/doc/src/httpc.xml
+++ b/lib/inets/doc/src/httpc.xml
@@ -287,8 +287,7 @@
                            {autoredirect,    boolean()} | 
                            {proxy_auth, {userstring(), passwordstring()}} | 
                            {version,         http_version()} | 
-                           {relaxed,         boolean()} |
-	                   {url_encode,      boolean()}</v>
+                           {relaxed,         boolean()}</v>
         <v>timeout() = integer() >= 0 | infinity</v>
         <v>Options = options()</v>
         <v>options() = [option()]</v>
@@ -379,13 +378,6 @@
 	    from the HTTP-standard are enabled.</p>
             <p>Default is <c>false</c>.</p>
 	  </item>
-
-	  <tag><c><![CDATA[url_encode]]></c></tag>
-          <item>
-            <p>Applies Percent-encoding, also known as URL encoding on the 
-	    URL.</p>
-	    <p>Default is <c>false</c>.</p>
-	  </item>
         </taglist>
 
         <p>Option (<c>option()</c>) details:</p>
diff --git a/lib/inets/doc/src/inets.gif b/lib/inets/doc/src/inets.gif
deleted file mode 100644
index 64968ae68a..0000000000
--- a/lib/inets/doc/src/inets.gif
+++ /dev/null
diff --git a/lib/inets/doc/src/min_head.gif b/lib/inets/doc/src/min_head.gif
deleted file mode 100644
index 67948a6378..0000000000
--- a/lib/inets/doc/src/min_head.gif
+++ /dev/null
diff --git a/lib/inets/doc/src/note.gif b/lib/inets/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/inets/doc/src/note.gif
+++ /dev/null
diff --git a/lib/inets/doc/src/notes.gif b/lib/inets/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/inets/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/inets/doc/src/notes.xml b/lib/inets/doc/src/notes.xml
index 10ef84d7cf..70b2811c0e 100644
--- a/lib/inets/doc/src/notes.xml
+++ b/lib/inets/doc/src/notes.xml
@@ -33,7 +33,88 @@
     <file>notes.xml</file>
   </header>
   
-  <section><title>Inets 6.4.2</title>
+  <section><title>Inets 6.4.5</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    CGI environment variable CONTENT_LENGTH shall be a string</p>
+          <p>
+	    Own Id: OTP-14679</p>
+        </item>
+        <item>
+          <p>
+	    In relaxed mode disregard Content-Length header if there
+	    is also a Transfer-Encoding header.</p>
+          <p>
+	    Own Id: OTP-14727</p>
+        </item>
+        <item>
+          <p>
+	    Eliminated race condition, that could cause http request
+	    to sporadically fail to complete successfully, when
+	    keep-alive connections are used.</p>
+          <p>
+	    Own Id: OTP-14783</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Inets 6.4.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Correct the handling of location headers so that the
+	    status code is not hard coded. This should have been
+	    fixed by commit 2cc5ba70cbbc6b3ace81a2a0324417c3b65265bb
+	    but unfortunately was broken during a code refactoring
+	    and unnoticed due to a faulty placed test case.</p>
+          <p>
+	    Own Id: OTP-14761</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Inets 6.4.3</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Fix broken handling of POST requests</p>
+          <p>
+	    New chunk mechanism of body data in POST requests added
+	    in 5d01c70ca399edf28e99dc760506329689fab6ba broke
+	    handling of POST body data not using the new mechanism.</p>
+          <p>
+	    Own Id: OTP-14656</p>
+        </item>
+        <item>
+          <p>
+	    Make sure ints:stop/2 of the service httpd is synchronous</p>
+          <p>
+	    Own Id: OTP-14696</p>
+        </item>
+        <item>
+          <p>
+	    Honor status code returned by ESI script and modernize
+	    "location" header handling.</p>
+          <p>
+	    Own Id: OTP-14716</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Inets 6.4.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
diff --git a/lib/inets/doc/src/part_notes.xml b/lib/inets/doc/src/part_notes.xml
deleted file mode 100644
index d10c829f4a..0000000000
--- a/lib/inets/doc/src/part_notes.xml
+++ /dev/null
@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2002</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Inets</title>
-    <prepared>Micael Karlberg</prepared>
-    <docno></docno>
-    <date>2002-02-28</date>
-    <rev>3.0</rev>
-    <file>part_notes.sgml</file>
-  </header>
-  <description>
-    <p>A set of services such as a Web server and a ftp client etc. </p>
-    <p>For information about older versions see
-      <url href="part_notes_history_frame.html">release notes history</url>.</p>
-  </description>
-  <xi:include file="notes.xml"/>
-</part>
-
-
diff --git a/lib/inets/doc/src/part_notes_history.xml b/lib/inets/doc/src/part_notes_history.xml
deleted file mode 100644
index 66e3307f69..0000000000
--- a/lib/inets/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Inets</title>
-    <prepared>Micael Karlberg</prepared>
-    <docno></docno>
-    <date>2002-02-28</date>
-    <rev>3.0</rev>
-    <file>part_notes.sgml</file>
-  </header>
-  <include file="notes_history"></include>
-</part>
-
-
diff --git a/lib/inets/doc/src/ref_man.gif b/lib/inets/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/inets/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/inets/doc/src/summary.html.src b/lib/inets/doc/src/summary.html.src
deleted file mode 100644
index 17637a0787..0000000000
--- a/lib/inets/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-A set of services such as a web server and a ftp client etc
\ No newline at end of file
diff --git a/lib/inets/doc/src/user_guide.gif b/lib/inets/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/inets/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/inets/doc/src/warning.gif b/lib/inets/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/inets/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/inets/src/http_client/httpc.erl b/lib/inets/src/http_client/httpc.erl
index bf2da82603..821eb7f02f 100644
--- a/lib/inets/src/http_client/httpc.erl
+++ b/lib/inets/src/http_client/httpc.erl
@@ -175,10 +175,10 @@ request(Method,
        (Method =:= delete) orelse 
        (Method =:= trace) andalso 
        (is_atom(Profile) orelse is_pid(Profile)) ->
-    case uri_parse(Url, Options) of
-	{error, Reason} ->
+    case uri_string:parse(uri_string:normalize(Url)) of
+	{error, Reason, _} ->
 	    {error, Reason};
-	{ok, ParsedUrl} ->
+	ParsedUrl ->
 	    case header_parse(Headers) of
 		{error, Reason} ->
 		    {error, Reason};
@@ -189,10 +189,10 @@ request(Method,
     end.
 
 do_request(Method, {Url, Headers, ContentType, Body}, HTTPOptions, Options, Profile) ->
-    case uri_parse(Url, Options) of
-	{error, Reason} ->
+    case uri_string:parse(uri_string:normalize(Url)) of
+	{error, Reason, _} ->
 	    {error, Reason};
-	{ok, ParsedUrl} ->
+	ParsedUrl ->
 	    handle_request(Method, Url, 
 			   ParsedUrl, Headers, ContentType, Body, 
 			   HTTPOptions, Options, Profile)
@@ -312,23 +312,28 @@ store_cookies(SetCookieHeaders, Url) ->
 
 store_cookies(SetCookieHeaders, Url, Profile) 
   when is_atom(Profile) orelse is_pid(Profile) ->
-    try 
-	begin
+    case uri_string:parse(uri_string:normalize(Url)) of
+        {error, Bad, _} ->
+            {error, {parse_failed, Bad}};
+        URI ->
+            Scheme = scheme_to_atom(maps:get(scheme, URI, '')),
+            Host = maps:get(host, URI, ""),
+            Port = maps:get(port, URI, default_port(Scheme)),
+            Path = uri_string:recompose(#{path => maps:get(path, URI, "")}),
 	    %% Since the Address part is not actually used
 	    %% by the manager when storing cookies, we dont
 	    %% care about ipv6-host-with-brackets.
-	    {ok, {_, _, Host, Port, Path, _}} = uri_parse(Url),
 	    Address     = {Host, Port}, 
 	    ProfileName = profile_name(Profile),
 	    Cookies     = httpc_cookie:cookies(SetCookieHeaders, Path, Host),
 	    httpc_manager:store_cookies(Cookies, Address, ProfileName), 
 	    ok
-	end
-    catch 
-	error:{badmatch, Bad} ->
-	    {error, {parse_failed, Bad}}
     end.
 
+default_port(http) ->
+    80;
+default_port(https) ->
+    443.
 
 %%--------------------------------------------------------------------------
 %% cookie_header(Url) -> Header | {error, Reason}
@@ -495,7 +500,7 @@ service_info(Pid) ->
 %%% Internal functions
 %%%========================================================================
 handle_request(Method, Url, 
-	       {Scheme, UserInfo, Host, Port, Path, Query}, 
+               URI,
 	       Headers0, ContentType, Body0,
 	       HTTPOptions0, Options0, Profile) ->
 
@@ -520,37 +525,40 @@ handle_request(Method, Url,
 			throw({error, {bad_body, Body0}})
 		end,
 
-	    HTTPOptions   = http_options(HTTPOptions0),
-	    Options       = request_options(Options0), 
-	    Sync          = proplists:get_value(sync,   Options),
-	    Stream        = proplists:get_value(stream, Options),
-	    Host2         = http_request:normalize_host(Scheme, Host, Port),
-	    HeadersRecord = header_record(NewHeaders, Host2, HTTPOptions),
-	    Receiver      = proplists:get_value(receiver, Options),
-	    SocketOpts    = proplists:get_value(socket_opts, Options),
-	    BracketedHost = proplists:get_value(ipv6_host_with_brackets, 
-						Options),
-	    MaybeEscPath  = maybe_encode_uri(HTTPOptions, Path),
-	    MaybeEscQuery = maybe_encode_uri(HTTPOptions, Query),
-	    AbsUri        = maybe_encode_uri(HTTPOptions, Url),
+            HTTPOptions   = http_options(HTTPOptions0),
+            Options       = request_options(Options0),
+            Sync          = proplists:get_value(sync,   Options),
+            Stream        = proplists:get_value(stream, Options),
+            Receiver      = proplists:get_value(receiver, Options),
+            SocketOpts    = proplists:get_value(socket_opts, Options),
+            BracketedHost = proplists:get_value(ipv6_host_with_brackets,
+                                                Options),
+
+            Scheme        = scheme_to_atom(maps:get(scheme, URI, '')),
+            Userinfo      = maps:get(userinfo, URI, ""),
+            Host          = http_util:maybe_add_brackets(maps:get(host, URI, ""), BracketedHost),
+            Port          = maps:get(port, URI, default_port(Scheme)),
+            Host2         = http_request:normalize_host(Scheme, Host, Port),
+            Path          = uri_string:recompose(#{path => maps:get(path, URI, "")}),
+            Query         = add_question_mark(maps:get(query, URI, "")),
+            HeadersRecord = header_record(NewHeaders, Host2, HTTPOptions),
 
 	    Request = #request{from          = Receiver,
-			       scheme        = Scheme, 
-			       address       = {host_address(Host, BracketedHost), Port},
-			       path          = MaybeEscPath,
-			       pquery        = MaybeEscQuery,
+			       scheme        = Scheme,
+			       address       = {Host, Port},
+			       path          = Path,
+			       pquery        = Query,
 			       method        = Method,
 			       headers       = HeadersRecord, 
 			       content       = {ContentType, Body},
 			       settings      = HTTPOptions, 
-			       abs_uri       = AbsUri,
-			       userinfo      = UserInfo, 
+			       abs_uri       = Url,
+			       userinfo      = Userinfo,
 			       stream        = Stream, 
 			       headers_as_is = headers_as_is(Headers0, Options),
 			       socket_opts   = SocketOpts, 
 			       started       = Started,
 			       ipv6_host_with_brackets = BracketedHost},
-
 	    case httpc_manager:request(Request, profile_name(Profile)) of
 		{ok, RequestId} ->
 		    handle_answer(RequestId, Sync, Options);
@@ -565,14 +573,31 @@ handle_request(Method, Url,
 	    Error
     end.
 
+
+add_question_mark(<<>>) ->
+    <<>>;
+add_question_mark([]) ->
+    [];
+add_question_mark(Comp) when is_binary(Comp) ->
+    <<$?, Comp/binary>>;
+add_question_mark(Comp) when is_list(Comp) ->
+    [$?|Comp].
+
+
+scheme_to_atom("http") ->
+    http;
+scheme_to_atom("https") ->
+    https;
+scheme_to_atom('') ->
+    '';
+scheme_to_atom(Scheme) ->
+    throw({error, {bad_scheme, Scheme}}).
+
+
 ensure_chunked_encoding(Hdrs) ->
     Key = "transfer-encoding",
     lists:keystore(Key, 1, Hdrs, {Key, "chunked"}).
 
-maybe_encode_uri(#http_options{url_encode = true}, URI) ->
-    http_uri:encode(URI);
-maybe_encode_uri(_, URI) ->
-    URI.
 
 mk_chunkify_fun(ProcessBody) ->
     fun(eof_body) ->
@@ -1190,17 +1215,6 @@ validate_headers(RequestHeaders, _, _) ->
 %% These functions is just simple wrappers to parse specifically HTTP URIs
 %%--------------------------------------------------------------------------
 
-scheme_defaults() ->
-    [{http, 80}, {https, 443}].
-
-uri_parse(URI) ->
-    http_uri:parse(URI, [{scheme_defaults, scheme_defaults()}]).
-
-uri_parse(URI, Opts) ->
-    http_uri:parse(URI, [{scheme_defaults, scheme_defaults()} | Opts]).
-
-
-%%--------------------------------------------------------------------------
 header_parse([]) ->
     ok;
 header_parse([{Field, Value}|T]) when is_list(Field), is_list(Value) ->    
@@ -1221,10 +1235,6 @@ child_name(Pid, [{Name, Pid} | _]) ->
 child_name(Pid, [_ | Children]) ->
     child_name(Pid, Children).
 
-host_address(Host, false) ->
-    Host;
-host_address(Host, true) ->
-    string:strip(string:strip(Host, right, $]), left, $[).
 
 check_body_gen({Fun, _}) when is_function(Fun) -> 
     ok;
diff --git a/lib/inets/src/http_client/httpc_handler.erl b/lib/inets/src/http_client/httpc_handler.erl
index bd1d2e833a..1482f4f922 100644
--- a/lib/inets/src/http_client/httpc_handler.erl
+++ b/lib/inets/src/http_client/httpc_handler.erl
@@ -109,7 +109,7 @@ start_link(Parent, Request, Options, ProfileName) ->
 %% to be called by the httpc manager process.
 %%--------------------------------------------------------------------
 send(Request, Pid) ->
-    call(Request, Pid, 5000).
+    call(Request, Pid).
 
 
 %%--------------------------------------------------------------------
@@ -712,12 +712,16 @@ do_handle_info({'EXIT', _, _}, State = #state{request = undefined}) ->
 do_handle_info({'EXIT', _, _}, State) ->
     {noreply, State#state{status = close}}.
     
-
 call(Msg, Pid) ->
-    call(Msg, Pid, infinity).
-
-call(Msg, Pid, Timeout) ->
-    gen_server:call(Pid, Msg, Timeout).
+    try gen_server:call(Pid, Msg)
+    catch
+ 	exit:{noproc, _} ->
+ 	    {error, closed};
+	exit:{normal, _} ->
+	    {error, closed};
+	exit:{{shutdown, _},_} ->
+	    {error, closed}
+    end.
 
 cast(Msg, Pid) ->
     gen_server:cast(Pid, Msg).
@@ -736,7 +740,7 @@ maybe_send_answer(Request, Answer, State) ->
     answer_request(Request, Answer, State).
 
 deliver_answer(#request{from = From} = Request) 
-  when is_pid(From) ->
+  when From =/= answer_sent ->
     Response = httpc_response:error(Request, socket_closed_remotely),
     httpc_response:send(From, Response);
 deliver_answer(_Request) ->
diff --git a/lib/inets/src/http_client/httpc_manager.erl b/lib/inets/src/http_client/httpc_manager.erl
index a63864493f..ffdf1603b3 100644
--- a/lib/inets/src/http_client/httpc_manager.erl
+++ b/lib/inets/src/http_client/httpc_manager.erl
@@ -849,11 +849,11 @@ pipeline_or_keep_alive(#request{id   = Id,
 				from = From} = Request, 
 		       HandlerPid, 
 		       #state{handler_db = HandlerDb} = State) ->
-    case (catch httpc_handler:send(Request, HandlerPid)) of
+    case httpc_handler:send(Request, HandlerPid) of
 	ok ->
 	    HandlerInfo = {Id, HandlerPid, From}, 
 	    ets:insert(HandlerDb, HandlerInfo);
-	_  -> % timeout pipelining failed
+	{error, closed}  -> % timeout pipelining failed
 	    start_handler(Request, State)
     end.
 
diff --git a/lib/inets/src/http_client/httpc_response.erl b/lib/inets/src/http_client/httpc_response.erl
index b3b11b74ab..58ab9144df 100644
--- a/lib/inets/src/http_client/httpc_response.erl
+++ b/lib/inets/src/http_client/httpc_response.erl
@@ -190,7 +190,7 @@ parse_status_code(<<?CR, ?LF, Rest/binary>>, StatusCodeStr,
 		  MaxHeaderSize, Result, true) ->
     parse_headers(Rest, [], [], MaxHeaderSize,
  		  [" ", list_to_integer(lists:reverse(
-				     string:strip(StatusCodeStr))) 
+                                          string:trim(StatusCodeStr)))
 		   | Result], true); 
 
 parse_status_code(<<?SP, Rest/binary>>, StatusCodeStr, 
@@ -269,7 +269,7 @@ parse_headers(<<?LF,?LF,Body/binary>>, Header, Headers,
 		  MaxHeaderSize, Result, Relaxed);
 
 parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, Header, Headers,
-	      MaxHeaderSize, Result, _) ->
+	      MaxHeaderSize, Result, Relaxed) ->
     HTTPHeaders = [lists:reverse(Header) | Headers],
     Length = lists:foldl(fun(H, Acc) -> length(H) + Acc end,
 			   0, HTTPHeaders),
@@ -277,8 +277,42 @@ parse_headers(<<?CR,?LF,?CR,?LF,Body/binary>>, Header, Headers,
  	true ->   
 	    ResponseHeaderRcord = 
 		http_response:headers(HTTPHeaders, #http_response_h{}),
-	    {ok, list_to_tuple(
-		   lists:reverse([Body, ResponseHeaderRcord | Result]))};
+
+            %% RFC7230, Section 3.3.3
+            %% If a message is received with both a Transfer-Encoding and a
+            %% Content-Length header field, the Transfer-Encoding overrides the
+            %% Content-Length. Such a message might indicate an attempt to
+            %% perform request smuggling (Section 9.5) or response splitting
+            %% (Section 9.4) and ought to be handled as an error. A sender MUST
+            %% remove the received Content-Length field prior to forwarding such
+            %% a message downstream.
+            case ResponseHeaderRcord#http_response_h.'transfer-encoding' of
+                undefined ->
+                    {ok, list_to_tuple(
+                           lists:reverse([Body, ResponseHeaderRcord | Result]))};
+                Value ->
+                    TransferEncoding = string:lowercase(Value),
+                    ContentLength = ResponseHeaderRcord#http_response_h.'content-length',
+                    if
+                        %% Respond without error but remove Content-Length field in relaxed mode
+                        (Relaxed =:= true)
+                        andalso (TransferEncoding =:= "chunked")
+                        andalso (ContentLength =/= "-1") ->
+                            ResponseHeaderRcordFixed =
+                                ResponseHeaderRcord#http_response_h{'content-length' = "-1"},
+                            {ok, list_to_tuple(
+                                   lists:reverse([Body, ResponseHeaderRcordFixed | Result]))};
+                        %% Respond with error in default (not relaxed) mode
+                        (Relaxed =:= false)
+                        andalso (TransferEncoding =:= "chunked")
+                        andalso (ContentLength =/= "-1") ->
+                            throw({error, {headers_conflict, {'content-length',
+                                                              'transfer-encoding'}}});
+                        true  ->
+                            {ok, list_to_tuple(
+                                   lists:reverse([Body, ResponseHeaderRcord | Result]))}
+                    end
+            end;
  	false ->
 	    throw({error, {header_too_long, MaxHeaderSize, 
 			   MaxHeaderSize-Length}})
@@ -343,58 +377,173 @@ status_server_error_50x(Response, Request) ->
     {stop, {Request#request.id, Msg}}.
 
 
-redirect(Response = {StatusLine, Headers, Body}, Request) ->
+redirect(Response = {_, Headers, _}, Request) ->
     {_, Data} =  format_response(Response),
     case Headers#http_response_h.location of
-	undefined ->
-	    transparent(Response, Request);
-	RedirUrl ->
-	    UrlParseOpts = [{ipv6_host_with_brackets, 
-			     Request#request.ipv6_host_with_brackets}], 
-	    case uri_parse(RedirUrl, UrlParseOpts) of
-		{error, no_scheme} when
-		(Request#request.settings)#http_options.relaxed ->
-		    NewLocation = fix_relative_uri(Request, RedirUrl),
-		    redirect({StatusLine, Headers#http_response_h{
-					    location = NewLocation},
-			      Body}, Request);
-		{error, Reason} ->
-		    {ok, error(Request, Reason), Data};
-		%% Automatic redirection
-		{ok, {Scheme, _, Host, Port, Path,  Query}} -> 
-		    HostPort = http_request:normalize_host(Scheme, Host, Port),
-		    NewHeaders = 
-			(Request#request.headers)#http_request_h{host = HostPort},
-		    NewRequest = 
-			Request#request{redircount = 
-					Request#request.redircount+1,
-					scheme = Scheme,
-					headers = NewHeaders,
-					address = {Host,Port},
-					path = Path,
-					pquery = Query,
-					abs_uri =
-					atom_to_list(Scheme) ++ "://" ++
-                                        Host ++ ":" ++ 
-					integer_to_list(Port) ++
-					Path ++ Query},
-		    {redirect, NewRequest, Data}
-	    end
+        undefined ->
+            transparent(Response, Request);
+        RedirUrl ->
+            Brackets = Request#request.ipv6_host_with_brackets,
+            case uri_string:parse(RedirUrl) of
+                {error, Reason, _} ->
+                    {ok, error(Request, Reason), Data};
+                %% Automatic redirection
+                URI ->
+                    {Host, Port0} = Request#request.address,
+                    Port = maybe_to_integer(Port0),
+                    Path = Request#request.path,
+                    Scheme = atom_to_list(Request#request.scheme),
+                    Query = Request#request.pquery,
+                    URIMap = resolve_uri(Scheme, Host, Port, Path, Query, URI),
+                    TScheme = list_to_atom(maps:get(scheme, URIMap)),
+                    THost = http_util:maybe_add_brackets(maps:get(host, URIMap), Brackets),
+                    TPort = maps:get(port, URIMap),
+                    TPath = maps:get(path, URIMap),
+                    TQuery = maps:get(query, URIMap, ""),
+                    NewURI = uri_string:normalize(
+                               uri_string:recompose(URIMap)),
+                    HostPort = http_request:normalize_host(TScheme, THost, TPort),
+                    NewHeaders =
+                        (Request#request.headers)#http_request_h{host = HostPort},
+                    NewRequest =
+                        Request#request{redircount =
+                                            Request#request.redircount+1,
+                                        scheme = TScheme,
+                                        headers = NewHeaders,
+                                        address = {THost,TPort},
+                                        path = TPath,
+                                        pquery = TQuery,
+                                        abs_uri = NewURI},
+                    {redirect, NewRequest, Data}
+            end
+    end.
+
+
+%% RFC3986 - 5.2.2.  Transform References
+resolve_uri(Scheme, Host, Port, Path, Query, URI) ->
+    resolve_uri(Scheme, Host, Port, Path, Query, URI, #{}).
+%%
+resolve_uri(Scheme, Host, Port, Path, Query, URI, Map0) ->
+    case maps:is_key(scheme, URI) of
+        true ->
+            Port = get_port(URI),
+            maybe_add_query(
+              Map0#{scheme => maps:get(scheme, URI),
+                   host => maps:get(host, URI),
+                   port => Port,
+                   path => maps:get(path, URI)},
+              URI);
+        false ->
+            Map = Map0#{scheme => Scheme},
+            resolve_authority(Host, Port, Path, Query, URI, Map)
+    end.
+
+
+get_port(URI) ->
+    Scheme = maps:get(scheme, URI),
+    case maps:get(port, URI, undefined) of
+        undefined ->
+            get_default_port(Scheme);
+        Port ->
+            Port
+    end.
+
+
+get_default_port("http") ->
+    80;
+get_default_port("https") ->
+    443.
+
+
+resolve_authority(Host, Port, Path, Query, RelURI, Map) ->
+    case maps:is_key(host, RelURI) of
+        true ->
+            Port = get_port(RelURI),
+            maybe_add_query(
+              Map#{host => maps:get(host, RelURI),
+                   port => Port,
+                   path => maps:get(path, RelURI)},
+              RelURI);
+        false ->
+            Map1 = Map#{host => Host,
+                    port => Port},
+            resolve_path(Path, Query, RelURI, Map1)
+    end.
+
+
+maybe_add_query(Map, RelURI) ->
+     case maps:is_key(query, RelURI) of
+         true ->
+             Map#{query => maps:get(query, RelURI)};
+         false ->
+             Map
+         end.
+
+
+resolve_path(Path, Query, RelURI, Map) ->
+    case maps:is_key(path, RelURI) of
+        true ->
+            Path1 = calculate_path(Path,  maps:get(path, RelURI)),
+            maybe_add_query(
+              Map#{path => Path1},
+              RelURI);
+        false ->
+            Map1 = Map#{path => Path},
+            resolve_query(Query, RelURI, Map1)
+    end.
+
+
+calculate_path(BaseP, RelP) ->
+    case starts_with_slash(RelP) of
+        true ->
+            RelP;
+        false ->
+            merge_paths(BaseP, RelP)
     end.
 
-maybe_to_list(Port) when is_integer(Port) ->
-    integer_to_list(Port);
-maybe_to_list(Port) when is_list(Port) ->
+
+starts_with_slash([$/|_]) ->
+    true;
+starts_with_slash(<<$/,_/binary>>) ->
+    true;
+starts_with_slash(_) ->
+    false.
+
+
+%% RFC3986 - 5.2.3.  Merge Paths
+merge_paths("", RelP) ->
+    [$/|RelP];
+merge_paths(BaseP, RelP) when is_list(BaseP) ->
+    do_merge_paths(lists:reverse(BaseP), RelP);
+merge_paths(BaseP, RelP) when is_binary(BaseP) ->
+    B = binary_to_list(BaseP),
+    R = binary_to_list(RelP),
+    Res = merge_paths(B, R),
+    list_to_binary(Res).
+
+
+do_merge_paths([$/|_] = L, RelP) ->
+    lists:reverse(L) ++ RelP;
+do_merge_paths([_|T], RelP) ->
+    do_merge_paths(T, RelP).
+
+
+resolve_query(Query, RelURI, Map) ->
+    case maps:is_key(query, RelURI) of
+        true ->
+            Map#{query => maps:get(query, RelURI)};
+        false ->
+            Map#{query => Query}
+    end.
+
+
+maybe_to_integer(Port) when is_list(Port) ->
+    {Port1, _} = string:to_integer(Port),
+    Port1;
+maybe_to_integer(Port) when is_integer(Port) ->
     Port.
 
-%%% Guessing that we received a relative URI, fix it to become an absoluteURI
-fix_relative_uri(Request, RedirUrl) ->
-    {Server, Port0} = Request#request.address,
-    Port = maybe_to_list(Port0),
-    Path = Request#request.path,
-    atom_to_list(Request#request.scheme) ++ "://" ++ Server ++ ":" ++ Port
-	++ Path ++ RedirUrl.
-    
+
 error(#request{id = Id}, Reason) ->
     {Id, {error, Reason}}.
 
@@ -444,18 +593,3 @@ format_response({StatusLine, Headers, Body}) ->
 		{Body, <<>>}
 	end,
     {{StatusLine, http_response:header_list(Headers), NewBody}, Data}.
-
-%%--------------------------------------------------------------------------
-%% These functions is just simple wrappers to parse specifically HTTP URIs
-%%--------------------------------------------------------------------------
-
-scheme_defaults() ->
-    [{http, 80}, {https, 443}].
-
-uri_parse(URI, Opts) ->
-    http_uri:parse(URI, [{scheme_defaults, scheme_defaults()} | Opts]).
-
-
-%%--------------------------------------------------------------------------
-
-
diff --git a/lib/inets/src/http_lib/http_util.erl b/lib/inets/src/http_lib/http_util.erl
index 487d04f7aa..5577b00cc8 100644
--- a/lib/inets/src/http_lib/http_util.erl
+++ b/lib/inets/src/http_lib/http_util.erl
@@ -27,7 +27,8 @@
 	 convert_month/1, 
 	 is_hostname/1,
 	 timestamp/0, timeout/2,
-	 html_encode/1
+	 html_encode/1,
+	 maybe_add_brackets/2
 	]).
 
 
@@ -194,6 +195,24 @@ html_encode(Chars) ->
     lists:append([char_to_html_entity(Char, Reserved) || Char <- Chars]).
 
 
+maybe_add_brackets(Addr, false) ->
+    Addr;
+maybe_add_brackets(Addr, true) when is_list(Addr) ->
+    case is_ipv6_address(Addr) of
+        true ->
+            [$[|Addr] ++ "]";
+        false ->
+            Addr
+    end;
+maybe_add_brackets(Addr, true) when is_binary(Addr) ->
+    case is_ipv6_address(Addr) of
+        true ->
+            <<$[,Addr/binary,$]>>;
+        false ->
+            Addr
+    end.
+
+
 %%%========================================================================
 %%% Internal functions
 %%%========================================================================
@@ -205,3 +224,14 @@ char_to_html_entity(Char, Reserved) ->
 	false ->
 	    [Char]
     end.
+
+is_ipv6_address(Addr) when is_binary(Addr) ->
+    B = binary_to_list(Addr),
+    is_ipv6_address(B);
+is_ipv6_address(Addr) when is_list(Addr) ->
+    case inet:parse_ipv6strict_address(Addr) of
+        {ok, _ } ->
+            true;
+        {error, _} ->
+            false
+    end.
diff --git a/lib/inets/src/http_server/httpd.erl b/lib/inets/src/http_server/httpd.erl
index 0b632d24e3..540e68e749 100644
--- a/lib/inets/src/http_server/httpd.erl
+++ b/lib/inets/src/http_server/httpd.erl
@@ -99,7 +99,14 @@ start_service(Conf) ->
 stop_service({Address, Port}) ->
     stop_service({Address, Port, ?DEFAULT_PROFILE});
 stop_service({Address, Port, Profile}) ->
-     httpd_sup:stop_child(Address, Port, Profile);
+    Name  = httpd_util:make_name("httpd_instance_sup", Address, Port, Profile),
+    Pid = whereis(Name),
+    MonitorRef = erlang:monitor(process, Pid),
+    Result = httpd_sup:stop_child(Address, Port, Profile),
+    receive
+        {'DOWN', MonitorRef, _, _, _} ->
+            Result
+    end;     
 stop_service(Pid) when is_pid(Pid) ->
     case service_info(Pid)  of
 	{ok, Info} ->	   
diff --git a/lib/inets/src/http_server/httpd_esi.erl b/lib/inets/src/http_server/httpd_esi.erl
index 9406b47802..f5493f6fad 100644
--- a/lib/inets/src/http_server/httpd_esi.erl
+++ b/lib/inets/src/http_server/httpd_esi.erl
@@ -66,7 +66,7 @@ handle_headers("") ->
     {ok, [], 200};
 handle_headers(Headers) ->
     NewHeaders = string:tokens(Headers, ?CRLF),
-    handle_headers(NewHeaders, [], 200).
+    handle_headers(NewHeaders, [], 200, true).
 
 %%%========================================================================
 %%% Internal functions
@@ -80,21 +80,17 @@ parse_headers([?CR, ?LF, ?CR, ?LF | Rest], Acc) ->
 parse_headers([Char | Rest], Acc) ->
     parse_headers(Rest, [Char | Acc]).
  
-handle_headers([], NewHeaders, StatusCode) ->
+handle_headers([], NewHeaders, StatusCode, _) ->
     {ok, NewHeaders, StatusCode};
 
-handle_headers([Header | Headers], NewHeaders, StatusCode) -> 
+handle_headers([Header | Headers], NewHeaders, StatusCode, NoESIStatus) -> 
     {FieldName, FieldValue} = httpd_response:split_header(Header, []),
     case FieldName of
-	"location" ->
-	    case http_request:is_absolut_uri(FieldValue) of
-		true ->
-		    handle_headers(Headers, 
-				   [{FieldName, FieldValue} | NewHeaders], 
-				   302);
-		false ->
-		    {proceed, FieldValue}
-	    end;
+	"location" when NoESIStatus == true ->
+            handle_headers(Headers, 
+                           [{FieldName, FieldValue} | NewHeaders], 
+                           302, NoESIStatus);
+	
 	"status" ->
 	    NewStatusCode = 
 		case httpd_util:split(FieldValue," ",2) of
@@ -103,8 +99,9 @@ handle_headers([Header | Headers], NewHeaders, StatusCode) ->
 		    _ ->
 			200
 		end,
-	    handle_headers(Headers, NewHeaders, NewStatusCode);
+	    handle_headers(Headers, NewHeaders, NewStatusCode, false);
 	_ -> 
 	    handle_headers(Headers, 
-			     [{FieldName, FieldValue}| NewHeaders], StatusCode)
-    end.	
+                           [{FieldName, FieldValue}| NewHeaders], StatusCode,
+                           NoESIStatus)
+    end.	 
diff --git a/lib/inets/src/http_server/httpd_example.erl b/lib/inets/src/http_server/httpd_example.erl
index 45b6deba97..47a8c48d01 100644
--- a/lib/inets/src/http_server/httpd_example.erl
+++ b/lib/inets/src/http_server/httpd_example.erl
@@ -20,7 +20,7 @@
 %%
 -module(httpd_example).
 -export([print/1]).
--export([get/2, put/2, post/2, yahoo/2, test1/2, get_bin/2, peer/2]).
+-export([get/2, put/2, post/2, yahoo/2, test1/2, get_bin/2, peer/2,new_status_and_location/2]).
 
 -export([newformat/3, post_chunked/3]).
 %% These are used by the inets test-suite
@@ -90,6 +90,9 @@ post(Env,Input) ->
 yahoo(_Env,_Input) ->
   "Location: http://www.yahoo.com\r\n\r\n".
 
+new_status_and_location(_Env,_Input) ->
+  "status:201 Created\r\n Location: http://www.yahoo.com\r\n\r\n".
+
 default(Env,Input) ->
   [header(),
    top("Default Example"),
diff --git a/lib/inets/src/http_server/httpd_request.erl b/lib/inets/src/http_server/httpd_request.erl
index 0eaf073255..007d272323 100644
--- a/lib/inets/src/http_server/httpd_request.erl
+++ b/lib/inets/src/http_server/httpd_request.erl
@@ -306,10 +306,10 @@ add_chunk([<<>>, Body, Length, MaxChunk]) ->
 add_chunk([More, Body, Length, MaxChunk]) ->
     body_chunk(<<Body/binary, More/binary>>, Length, MaxChunk).
 
-body_chunk(<<>> = Body, Length, MaxChunk) ->
-    {ok, {continue, ?MODULE, add_chunk, [Body, Length, MaxChunk]}};
 body_chunk(Body, Length, nolimit) ->
     whole_body(Body, Length); 
+body_chunk(<<>> = Body, Length, MaxChunk) ->
+    {ok, {continue, ?MODULE, add_chunk, [Body, Length, MaxChunk]}};
 
 body_chunk(Body, Length, MaxChunk) when Length > MaxChunk ->
     case size(Body) >= MaxChunk of 
diff --git a/lib/inets/src/http_server/httpd_request_handler.erl b/lib/inets/src/http_server/httpd_request_handler.erl
index bd4fdd3832..d918f10424 100644
--- a/lib/inets/src/http_server/httpd_request_handler.erl
+++ b/lib/inets/src/http_server/httpd_request_handler.erl
@@ -516,6 +516,15 @@ handle_body(#state{headers = Headers, body = Body,
 	    case ((Length =< MaxBodySize) or (MaxBodySize == nolimit)) of
 		true ->
 		    case httpd_request:body_chunk_first(Body, Length, MaxChunk) of 
+                        %% This is the case that the we need more data to complete
+                        %% the body but chunking to the mod_esi user is not enabled.
+                        {Module, add_chunk = Function,  Args} ->  
+                            http_transport:setopts(ModData#mod.socket_type, 
+						   ModData#mod.socket, 
+						   [{active, once}]),
+			    {noreply, State#state{mfa = 
+						      {Module, Function, Args}}};
+                        %% Chunking to mod_esi user is enabled
                         {ok, {continue, Module, Function, Args}} ->
                                 http_transport:setopts(ModData#mod.socket_type, 
 						   ModData#mod.socket, 
@@ -525,6 +534,8 @@ handle_body(#state{headers = Headers, body = Body,
                         {ok, {{continue, Chunk}, Module, Function, Args}} ->
                             handle_internal_chunk(State#state{chunk =  chunk_start(MaxChunk), 
                                                               body = Chunk}, Module, Function, Args);                   
+                        %% Whole body delivered, if chunking mechanism is enabled the whole
+                        %% body fits in one chunk.
                         {ok, NewBody} ->
                             handle_response(State#state{chunk = chunk_finish(ChunkState, 
                                                                              CbState, MaxChunk),
diff --git a/lib/inets/src/http_server/httpd_script_env.erl b/lib/inets/src/http_server/httpd_script_env.erl
index 055f08fdb0..d7c92c59ef 100644
--- a/lib/inets/src/http_server/httpd_script_env.erl
+++ b/lib/inets/src/http_server/httpd_script_env.erl
@@ -166,9 +166,9 @@ create_script_elements(cgi, path_info, PathInfo, ModData) ->
     [{"PATH_INFO", PathInfo},
      {"PATH_TRANSLATED", PathTranslated}];
 create_script_elements(esi, entity_body, Body, _) ->
-    [{content_length, httpd_util:flatlength(Body)}]; 
+    [{content_length, integer_to_list(httpd_util:flatlength(Body))}]; 
 create_script_elements(cgi, entity_body, Body, _) ->
-    [{"CONTENT_LENGTH", httpd_util:flatlength(Body)}]; 
+    [{"CONTENT_LENGTH", integer_to_list(httpd_util:flatlength(Body))}]; 
 create_script_elements(_, _, _, _) ->
     [].
 
diff --git a/lib/inets/src/http_server/mod_esi.erl b/lib/inets/src/http_server/mod_esi.erl
index 3a589ca5f0..3206d957d9 100644
--- a/lib/inets/src/http_server/mod_esi.erl
+++ b/lib/inets/src/http_server/mod_esi.erl
@@ -339,26 +339,21 @@ erl_scheme_webpage_whole(Mod, Func, Env, Input, ModData) ->
 	    {Headers, Body} = 
 		httpd_esi:parse_headers(lists:flatten(Response)),
 	    Length =  httpd_util:flatlength(Body),
-	    case httpd_esi:handle_headers(Headers) of
-		{proceed, AbsPath} ->
-		    {proceed, [{real_name, httpd_util:split_path(AbsPath)} 
-			       | ModData#mod.data]};
-		{ok, NewHeaders, StatusCode} ->
-		    send_headers(ModData, StatusCode, 
-				 [{"content-length", 
-				   integer_to_list(Length)}| NewHeaders]),
-		    case ModData#mod.method of
-			"HEAD" ->
-			    {proceed, [{response, {already_sent, 200, 0}} | 
-				       ModData#mod.data]};
-			_ ->
-			    httpd_response:send_body(ModData, 
-						     StatusCode, Body),
-			    {proceed, [{response, {already_sent, 200, 
-						  Length}} | 
-				       ModData#mod.data]}
-		    end
-	    end
+            {ok, NewHeaders, StatusCode} = httpd_esi:handle_headers(Headers), 
+            send_headers(ModData, StatusCode, 
+                         [{"content-length", 
+                           integer_to_list(Length)}| NewHeaders]),
+            case ModData#mod.method of
+                "HEAD" ->
+                    {proceed, [{response, {already_sent, 200, 0}} | 
+                               ModData#mod.data]};
+                _ ->
+                    httpd_response:send_body(ModData, 
+                                             StatusCode, Body),
+                    {proceed, [{response, {already_sent, 200, 
+                                           Length}} | 
+                               ModData#mod.data]}
+            end
     end.
 
 %% New API that allows the dynamic wepage to be sent back to the client 
@@ -398,29 +393,23 @@ deliver_webpage_chunk(#mod{config_db = Db} = ModData, Pid, Timeout) ->
         {continue, _} = Continue ->
             Continue;
 	{Headers, Body} ->
-	    case httpd_esi:handle_headers(Headers) of
-		{proceed, AbsPath} ->
-		    {proceed, [{real_name, httpd_util:split_path(AbsPath)} 
-			       | ModData#mod.data]};
-		{ok, NewHeaders, StatusCode} ->
-		    IsDisableChunkedSend = 
-			httpd_response:is_disable_chunked_send(Db),
-		    case (ModData#mod.http_version =/= "HTTP/1.1") or
-			(IsDisableChunkedSend) of
-			true ->
-			    send_headers(ModData, StatusCode, 
-					 [{"connection", "close"} | 
-					  NewHeaders]);
-			false ->
-			    send_headers(ModData, StatusCode, 
-					 [{"transfer-encoding", 
-					   "chunked"} | NewHeaders])
-		    end,    
-		    handle_body(Pid, ModData, Body, Timeout, length(Body), 
-				IsDisableChunkedSend)
-	    end;
-	timeout ->
-	    send_headers(ModData, 504, [{"connection", "close"}]),
+            {ok, NewHeaders, StatusCode} = httpd_esi:handle_headers(Headers),
+                IsDisableChunkedSend = httpd_response:is_disable_chunked_send(Db),
+            case (ModData#mod.http_version =/= "HTTP/1.1") or
+                (IsDisableChunkedSend) of
+                true ->
+                    send_headers(ModData, StatusCode, 
+                                 [{"connection", "close"} | 
+                                  NewHeaders]);
+                false ->
+                    send_headers(ModData, StatusCode, 
+                                 [{"transfer-encoding", 
+                                   "chunked"} | NewHeaders])
+            end,    
+            handle_body(Pid, ModData, Body, Timeout, length(Body), 
+                        IsDisableChunkedSend);
+        timeout ->
+            send_headers(ModData, 504, [{"connection", "close"}]),
 	    httpd_socket:close(ModData#mod.socket_type, ModData#mod.socket),
 	    {proceed,[{response, {already_sent, 200, 0}} | ModData#mod.data]}
     end.
@@ -560,15 +549,10 @@ eval(#mod{method = Method} = ModData, ESIBody, Modules)
 		{ok, Response} ->
 		    {Headers, _} = 
 			httpd_esi:parse_headers(lists:flatten(Response)),
-		    case httpd_esi:handle_headers(Headers) of
-			{ok, _, StatusCode} ->
-			    {proceed,[{response, {StatusCode, Response}} | 
-				      ModData#mod.data]};
-			{proceed, AbsPath} ->
-			    {proceed, [{real_name, AbsPath} | 
-				       ModData#mod.data]}
-		    end
-	    end;
+                    {ok, _, StatusCode} =httpd_esi:handle_headers(Headers), 
+                    {proceed,[{response, {StatusCode, Response}} | 
+                              ModData#mod.data]}
+            end;
 	false ->
 	    {proceed,[{status,
 		       {403, ModData#mod.request_uri,
diff --git a/lib/inets/src/inets_app/inets.appup.src b/lib/inets/src/inets_app/inets.appup.src
index a86413147c..fdf4cc6e07 100644
--- a/lib/inets/src/inets_app/inets.appup.src
+++ b/lib/inets/src/inets_app/inets.appup.src
@@ -18,10 +18,14 @@
 %% %CopyrightEnd%
 {"%VSN%",
  [
+  {<<"6.4.3">>, [{load_module, httpd_esi, 
+		  soft_purge, soft_purge, []}]},
   {<<"6\\..*">>,[{restart_application, inets}]},
   {<<"5\\..*">>,[{restart_application, inets}]}
  ],
  [
+  {<<"6.4.3">>, [{load_module, httpd_esi, 
+		  soft_purge, soft_purge, []}]},
   {<<"6\\..*">>,[{restart_application, inets}]},
   {<<"5\\..*">>,[{restart_application, inets}]}
  ]
diff --git a/lib/inets/test/Makefile b/lib/inets/test/Makefile
index ffc512050a..95e0559470 100644
--- a/lib/inets/test/Makefile
+++ b/lib/inets/test/Makefile
@@ -150,6 +150,7 @@ INETS_ROOT = ../../inets
 MODULES =                 		\
 	inets_test_lib    		\
 	erl_make_certs                  \
+	make_certs                      \
 	ftp_SUITE 	  		\
 	ftp_format_SUITE  		\
 	http_format_SUITE 		\
@@ -157,6 +158,8 @@ MODULES =                 		\
 	httpc_cookie_SUITE		\
 	httpc_proxy_SUITE		\
 	httpd_SUITE       		\
+	httpd_bench_SUITE               \
+	http_test_lib    		\
 	old_httpd_SUITE       		\
 	httpd_basic_SUITE		\
 	httpd_mod 	  		\
@@ -189,7 +192,7 @@ SOURCE = $(ERL_FILES) $(HRL_FILES)
 
 TARGET_FILES = $(MODULES:%=$(EBIN)/%.$(EMULATOR))
 
-INETS_SPECS = inets.spec
+INETS_SPECS = inets.spec inets_bench.spec
 COVER_FILE = inets.cover
 INETS_FILES = inets.config $(INETS_SPECS)
 
@@ -200,8 +203,10 @@ INETS_FILES = inets.config $(INETS_SPECS)
 # 	inets_ftp_suite \
 # 	inets_tftp_suite
 
+
 INETS_DATADIRS = inets_SUITE_data inets_socketwrap_SUITE_data
-HTTPD_DATADIRS = httpd_test_data httpd_SUITE_data httpd_basic_SUITE_data old_httpd_SUITE_data
+HTTPD_DATADIRS = httpd_test_data httpd_SUITE_data httpd_basic_SUITE_data old_httpd_SUITE_data httpd_bench_SUITE_data
+
 HTTPC_DATADIRS = httpc_SUITE_data httpc_proxy_SUITE_data
 FTP_DATADIRS   = ftp_SUITE_data  
 
diff --git a/lib/inets/test/http_format_SUITE.erl b/lib/inets/test/http_format_SUITE.erl
index 4e10a97f58..647eff4f7c 100644
--- a/lib/inets/test/http_format_SUITE.erl
+++ b/lib/inets/test/http_format_SUITE.erl
@@ -535,8 +535,11 @@ esi_parse_headers(Config) when is_list(Config) ->
 	 {"location","http://foo.bar.se"}], 302} =
 	httpd_esi:handle_headers(Headers2),
     
-    {proceed,"/foo/bar.html"} = 
-	httpd_esi:handle_headers("location:/foo/bar.html\r\n").
+   {ok,[{"location","/foo/bar.html"}], 302} = 
+	httpd_esi:handle_headers("location:/foo/bar.html\r\n"),
+    
+    {ok,[{"location","http://foo/bar.html"}],201} =
+        httpd_esi:handle_headers("status:201 Created\r\nlocation:http://foo/bar.html\r\n").
 
 %%--------------------------------------------------------------------
 cgi_parse_headers() ->
diff --git a/lib/inets/test/http_test_lib.erl b/lib/inets/test/http_test_lib.erl
new file mode 100644
index 0000000000..38e9e4976e
--- /dev/null
+++ b/lib/inets/test/http_test_lib.erl
@@ -0,0 +1,180 @@
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2015-2015. All Rights Reserved.
+%% 
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+-module(http_test_lib).
+
+-include_lib("common_test/include/ct.hrl").
+-include("inets_test_lib.hrl").
+-include("http_internal.hrl").
+-include("httpc_internal.hrl").
+
+%% Note: This directive should only be used in test suites.
+-compile(export_all).
+
+dummy_server(SocketType, Inet, Extra) ->
+    dummy_server(self(), SocketType, Inet, Extra).
+
+dummy_server(Caller, SocketType, Inet, Extra) ->
+    Args = [Caller, SocketType, Inet, Extra],
+    Pid = spawn(?MODULE, dummy_server_init, Args),
+    receive
+	{port, Port} ->
+	    {Pid, Port}
+    end.
+
+dummy_server_init(Caller, ip_comm, Inet, Extra) ->
+    ContentCb = proplists:get_value(content_cb, Extra),
+    BaseOpts = [binary, {packet, 0}, {reuseaddr,true}, {active, false}, {nodelay, true}], 
+    Conf = proplists:get_value(conf, Extra),
+    {ok, ListenSocket} = gen_tcp:listen(0, [Inet | BaseOpts]),
+    {ok, Port} = inet:port(ListenSocket),
+    Caller ! {port, Port},
+    dummy_ipcomm_server_loop({httpd_request, parse, [[{max_uri,    ?HTTP_MAX_URI_SIZE},
+						      {max_header, ?HTTP_MAX_HEADER_SIZE},
+						      {max_version,?HTTP_MAX_VERSION_STRING}, 
+						      {max_method, ?HTTP_MAX_METHOD_STRING},
+						      {max_content_length, ?HTTP_MAX_CONTENT_LENGTH},
+						      {customize, httpd_custom}
+						     ]]},
+			     [], ContentCb, Conf, ListenSocket);
+
+dummy_server_init(Caller, ssl, Inet, Extra) ->
+    ContentCb = proplists:get_value(content_cb, Extra),
+    SSLOptions = proplists:get_value(ssl, Extra),
+    Conf = proplists:get_value(conf, Extra),
+    BaseOpts = [binary, {reuseaddr,true}, {active, false}, {nodelay, true} |
+	        SSLOptions], 
+    dummy_ssl_server_init(Caller, BaseOpts, Inet, ContentCb, Conf).
+
+dummy_ssl_server_init(Caller, BaseOpts, Inet, ContentCb, Conf) ->
+    {ok, ListenSocket} = ssl:listen(0, [Inet | BaseOpts]),
+    {ok, {_, Port}} = ssl:sockname(ListenSocket),
+    Caller ! {port, Port},
+    dummy_ssl_server_loop({httpd_request, parse, [[{max_uri,    ?HTTP_MAX_URI_SIZE},
+						   {max_method, ?HTTP_MAX_METHOD_STRING},
+						   {max_version,?HTTP_MAX_VERSION_STRING}, 
+						   {max_method, ?HTTP_MAX_METHOD_STRING},
+						   {max_content_length, ?HTTP_MAX_CONTENT_LENGTH},
+						   {customize, httpd_custom}
+						  ]]},
+			  [], ContentCb, Conf, ListenSocket).
+
+dummy_ipcomm_server_loop(MFA, Handlers, ContentCb, Conf, ListenSocket) ->
+    receive
+	stop ->
+	    lists:foreach(fun(Handler) -> Handler ! stop end, Handlers);
+	{stop, From} ->
+	    Stopper = fun(Handler) -> Handler ! stop end, 
+	    lists:foreach(Stopper, Handlers),
+	    From ! {stopped, self()}
+    after 0 ->
+	    {ok, Socket} = gen_tcp:accept(ListenSocket),
+	    HandlerPid  = dummy_request_handler(MFA, Socket, ContentCb, Conf),
+	    gen_tcp:controlling_process(Socket, HandlerPid),
+	    HandlerPid ! ipcomm_controller,
+	    dummy_ipcomm_server_loop(MFA, [HandlerPid | Handlers],
+				     ContentCb, Conf, ListenSocket)
+    end.
+
+dummy_ssl_server_loop(MFA, Handlers, ContentCb, Conf, ListenSocket) ->
+    receive
+	stop ->
+	    lists:foreach(fun(Handler) -> Handler ! stop end, Handlers);
+	{stop, From} ->
+	    Stopper = fun(Handler) -> Handler ! stop end, 
+	    lists:foreach(Stopper, Handlers),
+	    From ! {stopped, self()}
+    after 0 ->
+	    {ok, Socket} = ssl:transport_accept(ListenSocket),
+	    HandlerPid  = dummy_request_handler(MFA, Socket, ContentCb, Conf),
+	    ssl:controlling_process(Socket, HandlerPid),
+	    HandlerPid ! ssl_controller,
+	    dummy_ssl_server_loop(MFA, [HandlerPid | Handlers],
+				  ContentCb, Conf, ListenSocket)
+    end.
+
+dummy_request_handler(MFA, Socket, ContentCb, Conf) ->
+    spawn(?MODULE, dummy_request_handler_init, [MFA, Socket, ContentCb, Conf]).
+
+dummy_request_handler_init(MFA, Socket, ContentCb, Conf) ->
+    SockType = 
+	receive 
+	    ipcomm_controller ->
+		inet:setopts(Socket, [{active, true}]),
+		ip_comm;
+	    ssl_controller ->
+		ok = ssl:ssl_accept(Socket, infinity),
+		ssl:setopts(Socket, [{active, true}]),
+		ssl
+	end,
+    dummy_request_handler_loop(MFA, SockType, Socket, ContentCb, Conf).
+    
+dummy_request_handler_loop({Module, Function, Args}, SockType, Socket, ContentCb, Conf) ->
+    receive 
+	{Proto, _, Data} when (Proto =:= tcp) orelse (Proto =:= ssl) ->
+	    case handle_request(Module, Function, [Data | Args], Socket, ContentCb, Conf) of
+		stop when Proto =:= tcp ->
+		    gen_tcp:close(Socket);
+		stop when Proto =:= ssl ->
+		    ssl:close(Socket);
+		NewMFA ->
+		    dummy_request_handler_loop(NewMFA, SockType, Socket, ContentCb, Conf)
+	    end;
+	stop when SockType =:= ip_comm ->
+	    gen_tcp:close(Socket);
+	stop when SockType =:= ssl ->
+	    ssl:close(Socket)
+    end.
+
+handle_request(Module, Function, Args, Socket, ContentCb, Conf) ->
+    case Module:Function(Args) of
+	{ok, Result} ->
+	    case ContentCb:handle_http_msg(Result, Socket, Conf) of
+		stop ->
+		    stop;
+		<<>> ->
+		    {httpd_request, parse, [[{max_uri,?HTTP_MAX_URI_SIZE},
+					     {max_header, ?HTTP_MAX_HEADER_SIZE},
+					     {max_version,?HTTP_MAX_VERSION_STRING}, 
+					     {max_method, ?HTTP_MAX_METHOD_STRING},
+					     {max_content_length, ?HTTP_MAX_CONTENT_LENGTH},
+					     {customize, httpd_custom}
+					    ]]};
+		Data ->	
+		    handle_request(httpd_request, parse, 
+				   [Data, [{max_uri,    ?HTTP_MAX_URI_SIZE},
+					   {max_header, ?HTTP_MAX_HEADER_SIZE},
+					   {max_version,?HTTP_MAX_VERSION_STRING}, 
+					   {max_method, ?HTTP_MAX_METHOD_STRING},
+					   {max_content_length, ?HTTP_MAX_CONTENT_LENGTH},
+					   {customize, httpd_custom}
+					  ]], Socket, ContentCb, Conf)
+	    end;
+	NewMFA ->
+	    NewMFA
+    end.
+
+%% Perform a synchronous stop
+dummy_server_stop(Pid) ->
+    Pid ! {stop, self()},
+    receive 
+	{stopped, Pid} ->
+	    ok
+    end.
diff --git a/lib/inets/test/httpc_SUITE.erl b/lib/inets/test/httpc_SUITE.erl
index e6dcd2285f..9b5317c6bb 100644
--- a/lib/inets/test/httpc_SUITE.erl
+++ b/lib/inets/test/httpc_SUITE.erl
@@ -42,7 +42,8 @@
 %% Common Test interface functions -----------------------------------
 %%--------------------------------------------------------------------
 suite() ->
-    [{ct_hooks,[ts_install_cth]}
+    [{ct_hooks,[ts_install_cth]},
+     {timetrap,{seconds, 30}}
     ].
 
 all() ->
@@ -57,7 +58,10 @@ all() ->
 groups() ->
     [
      {http, [], real_requests()},
-     {sim_http, [], only_simulated()},
+     %% process_leak_on_keepalive is depending on stream_fun_server_close
+     %% and it shall be the last test case in the suite otherwise cookie
+     %% will fail.
+     {sim_http, [], only_simulated() ++ [process_leak_on_keepalive]},
      {https, [], real_requests()},
      {sim_https, [], only_simulated()},
      {misc, [], misc()}
@@ -67,6 +71,7 @@ real_requests()->
     [
      head,
      get,
+     get_query_string,
      post,
      delete,
      post_stream,
@@ -114,10 +119,10 @@ only_simulated() ->
      invalid_chunk_size,
      headers_dummy,
      headers_with_obs_fold,
+     headers_conflict_chunked_with_length,
      empty_response_header,
      remote_socket_close,
      remote_socket_close_async,
-     process_leak_on_keepalive,
      transfer_encoding,
      transfer_encoding_identity,
      redirect_loop,
@@ -126,10 +131,13 @@ only_simulated() ->
      redirect_found,
      redirect_see_other,
      redirect_temporary_redirect,
+     redirect_relative_uri,
      port_in_host_header,
      redirect_port_in_host_header,
      relaxed,
-     multipart_chunks
+     multipart_chunks,
+     get_space,
+     stream_fun_server_close
     ].
 
 misc() ->
@@ -142,7 +150,6 @@ misc() ->
 %%--------------------------------------------------------------------
 
 init_per_suite(Config) ->
-    ct:timetrap({seconds, 30}),
     PrivDir = proplists:get_value(priv_dir, Config),
     DataDir = proplists:get_value(data_dir, Config),
     inets_test_lib:start_apps([inets]),
@@ -169,7 +176,6 @@ init_per_group(Group, Config0) when Group =:= sim_https; Group =:= https->
     catch crypto:stop(),
     try crypto:start() of
         ok ->
-            ct:timetrap({seconds, 30}),
             start_apps(Group),
             do_init_per_group(Group, Config0)
     catch
@@ -243,6 +249,25 @@ get(Config) when is_list(Config) ->
 
     {ok, {{_,200,_}, [_ | _], BinBody}} =  httpc:request(get, Request, [], [{body_format, binary}]),
     true = is_binary(BinBody).
+
+
+get_query_string() ->
+    [{doc, "Test http get request with query string against local server"}].
+get_query_string(Config) when is_list(Config) ->
+    Request  = {url(group_name(Config), "/dummy.html?foo=bar", Config), []},
+    {ok, {{_,200,_}, [_ | _], Body = [_ | _]}} = httpc:request(get, Request, [], []),
+
+    inets_test_lib:check_body(Body).
+
+%%--------------------------------------------------------------------
+get_space() ->
+    [{"Test http get request with '%20' in the path of the URL."}].
+get_space(Config) when is_list(Config) ->
+    Request  = {url(group_name(Config), "/space%20.html", Config), []},
+    {ok, {{_,200,_}, [_ | _], Body = [_ | _]}} = httpc:request(get, Request, [], []),
+
+    inets_test_lib:check_body(Body).
+
 %%--------------------------------------------------------------------
 post() ->
     [{"Test http post request against local server. We do in this case "
@@ -576,7 +601,26 @@ redirect_temporary_redirect(Config) when is_list(Config) ->
     {ok, {{_,200,_}, [_ | _], [_|_]}}
 	= httpc:request(post, {URL307, [],"text/plain", "foobar"},
 			[], []).
+%%-------------------------------------------------------------------------
+redirect_relative_uri() ->
+    [{doc, "The server SHOULD generate a Location header field in the response "
+      "containing a preferred URI reference for the new permanent URI.  The user "
+      "agent MAY use the Location field value for automatic redirection.  The server's "
+      "response payload usually contains a short hypertext note with a "
+      "hyperlink to the new URI(s)."}].
+redirect_relative_uri(Config) when is_list(Config) ->
+
+    URL301 = url(group_name(Config), "/301_rel_uri.html", Config),
+
+    {ok, {{_,200,_}, [_ | _], [_|_]}}
+	= httpc:request(get, {URL301, []}, [], []),
+
+    {ok, {{_,200,_}, [_ | _], []}}
+	= httpc:request(head, {URL301, []}, [], []),
 
+    {ok, {{_,200,_}, [_ | _], [_|_]}}
+	= httpc:request(post, {URL301, [],"text/plain", "foobar"},
+			[], []).
 %%-------------------------------------------------------------------------
 redirect_loop() ->
     [{"doc, Test redirect loop detection"}].
@@ -746,7 +790,7 @@ empty_body() ->
 empty_body(Config) when is_list(Config) ->
     URL = url(group_name(Config), "/empty.html", Config),
     {ok, {{_,200,_}, [_ | _], []}} =
-	httpc:request(get, {URL, []}, [{timeout, 500}], []).
+	httpc:request(get, {URL, []}, [], []).
 
 %%-------------------------------------------------------------------------
 
@@ -978,7 +1022,6 @@ headers_dummy(Config) when is_list(Config) ->
 		       {"If-Range", "Sat, 29 Oct 1994 19:43:31 GMT"},
 		       {"If-Match", "*"},
 		       {"Content-Type", "text/plain"},
-		       {"Content-Encoding", "chunked"},
 		       {"Content-Length", "6"},
 		       {"Content-Language", "en"},
 		       {"Content-Location", "http://www.foobar.se"},
@@ -1004,6 +1047,18 @@ headers_with_obs_fold(Config) when is_list(Config) ->
 
 %%-------------------------------------------------------------------------
 
+headers_conflict_chunked_with_length(doc) ->
+    ["Test the code for handling headers with both Transfer-Encoding"
+     "and Content-Length which must receive error in default (not relaxed) mode"
+     "and must receive successful response in relaxed mode"];
+headers_conflict_chunked_with_length(Config) when is_list(Config) ->
+    Request = {url(group_name(Config), "/headers_conflict_chunked_with_length.html", Config), []},
+    {error, {could_not_parse_as_http, _}} = httpc:request(get, Request, [{relaxed, false}], []),
+    {ok,{{_,200,_},_,_}} = httpc:request(get, Request, [{relaxed, true}], []),
+    ok.
+
+%%-------------------------------------------------------------------------
+
 invalid_headers(Config) ->
     Request  = {url(group_name(Config), "/dummy.html", Config), [{"cookie", undefined}]},
     {error, _} = httpc:request(get, Request, [], []).
@@ -1043,8 +1098,6 @@ remote_socket_close_async(Config) when is_list(Config) ->
 %%-------------------------------------------------------------------------
 
 process_leak_on_keepalive(Config) ->
-    {ok, ClosedSocket} = gen_tcp:listen(6666, [{active, false}]),
-    ok = gen_tcp:close(ClosedSocket),
     Request  = {url(group_name(Config), "/dummy.html", Config), []},
     HttpcHandlers0 = supervisor:which_children(httpc_handler_sup),
     {ok, {{_, 200, _}, _, Body}} = httpc:request(get, Request, [], []),
@@ -1056,11 +1109,10 @@ process_leak_on_keepalive(Config) ->
         ordsets:to_list(
           ordsets:subtract(ordsets:from_list(HttpcHandlers1),
                            ordsets:from_list(HttpcHandlers0))),
-    sys:replace_state(
-      Pid, fun (State) ->
-                   Session = element(3, State),
-                   setelement(3, State, Session#session{socket=ClosedSocket})
-           end),
+    State = sys:get_state(Pid),
+    #session{socket=Socket} = element(3, State),
+    gen_tcp:close(Socket),
+
     {ok, {{_, 200, _}, _, Body}} = httpc:request(get, Request, [], []),
     %% bad handler with the closed socket should get replaced by
     %% the new one, so children count should stay the same
@@ -1179,6 +1231,22 @@ wait_for_whole_response(Config) when is_list(Config) ->
      ReqSeqNumServer ! shutdown.
 
 %%--------------------------------------------------------------------
+stream_fun_server_close() ->
+    [{doc, "Test that an error msg is received when using a receiver fun as stream target"}].
+stream_fun_server_close(Config) when is_list(Config) ->
+    Request  = {url(group_name(Config), "/delay_close.html", Config), []},
+    Self = self(),
+    Fun = fun(X) -> Self ! X end,
+    {ok, RequestId} = httpc:request(get, Request, [], [{sync, false}, {receiver, Fun}]),
+    receive
+        {RequestId, {error, Reason}} ->
+            ct:pal("Close ~p", [Reason]),
+            ok
+    after 13000 ->
+            ct:fail(did_not_receive_close)
+    end. 
+                                             
+%%--------------------------------------------------------------------
 %% Internal Functions ------------------------------------------------
 %%--------------------------------------------------------------------
 stream(ReceiverPid, Receiver, Config) ->
@@ -1291,13 +1359,13 @@ group_name(Config) ->
 server_start(sim_http, _) ->
     Inet = inet_version(),
     ok = httpc:set_options([{ipfamily, Inet}]),
-    {_Pid, Port} = dummy_server(Inet),
+    {_Pid, Port} = http_test_lib:dummy_server(ip_comm, Inet, [{content_cb, ?MODULE}]),
     Port;
 
 server_start(sim_https, SslConfig) ->
     Inet = inet_version(),
     ok = httpc:set_options([{ipfamily, Inet}]),
-    {_Pid, Port} = dummy_server(ssl, Inet, SslConfig),
+    {_Pid, Port} = http_test_lib:dummy_server(ssl, Inet, [{ssl, SslConfig}, {content_cb, ?MODULE}]),
     Port;
 
 server_start(_, HttpdConfig) ->
@@ -1401,13 +1469,7 @@ receive_replys([ID|IDs]) ->
 	    ct:pal({recived_canceld_id, Other})
     end.
 
-%% Perform a synchronous stop
-dummy_server_stop(Pid) ->
-    Pid ! {stop, self()},
-    receive 
-	{stopped, Pid} ->
-	    ok
-    end.
+
 
 inet_version() ->
     inet. %% Just run inet for now
@@ -1561,7 +1623,6 @@ handle_request(Module, Function, Args, Socket) ->
     end.
 
 handle_http_msg({Method, RelUri, _, {_, Headers}, Body}, Socket) ->
-
     ct:print("Request: ~p ~p", [Method, RelUri]),
 
     NextRequest = 
@@ -1685,6 +1746,15 @@ content_length(["content-length:" ++ Value | _]) ->
 content_length([_Head | Tail]) ->
    content_length(Tail).
 
+handle_uri("GET","/dummy.html?foo=bar",_,_,_,_) ->
+    "HTTP/1.0 200 OK\r\n\r\nTEST";
+
+handle_uri("GET","/space%20.html",_,_,_,_) ->
+    Body = "<HTML><BODY>foobar</BODY></HTML>",
+    "HTTP/1.1 200 OK\r\n" ++
+        "Content-Length:" ++ integer_to_list(length(Body)) ++ "\r\n\r\n" ++
+        Body;
+
 handle_uri(_,"/just_close.html",_,_,_,_) ->
 		close;
 handle_uri(_,"/no_content.html",_,_,_,_) ->
@@ -1750,6 +1820,23 @@ handle_uri(_,"/301.html",Port,_,Socket,_) ->
 	"Content-Length:" ++ integer_to_list(length(Body))
 	++ "\r\n\r\n" ++ Body;
 
+
+handle_uri("HEAD","/301_rel_uri.html",_,_,_,_) ->
+    NewUri = "/dummy.html",
+    "HTTP/1.1 301 Moved Permanently\r\n" ++
+	"Location:" ++ NewUri ++  "\r\n" ++
+	"Content-Length:0\r\n\r\n";
+
+handle_uri(_,"/301_rel_uri.html",_,_,_,_) ->
+    NewUri = "/dummy.html",
+  Body = "<HTML><BODY><a href=" ++ NewUri ++
+	">New place</a></BODY></HTML>",
+    "HTTP/1.1 301 Moved Permanently\r\n" ++
+	"Location:" ++ NewUri ++  "\r\n" ++
+	"Content-Length:" ++ integer_to_list(length(Body))
+	++ "\r\n\r\n" ++ Body;
+
+
 handle_uri("HEAD","/302.html",Port,_,Socket,_) ->
     NewUri = url_start(Socket) ++
 	integer_to_list(Port) ++ "/dummy.html",
@@ -1853,7 +1940,6 @@ handle_uri(_,"/dummy_headers.html",_,_,Socket,_) ->
     %% user to evaluate. This is not a valid response
     %% it only tests that the header handling code works.
     Head = "HTTP/1.1 200 ok\r\n" ++
-	"Content-Length:32\r\n" ++
 	"Pragma:1#no-cache\r\n"  ++
 	"Via:1.0 fred, 1.1 nowhere.com (Apache/1.1)\r\n"  ++
 	"Warning:1#pseudonym foobar\r\n"  ++
@@ -1883,6 +1969,15 @@ handle_uri(_,"/obs_folded_headers.html",_,_,_,_) ->
     " b\r\n\r\n"
     "Hello";
 
+handle_uri(_,"/headers_conflict_chunked_with_length.html",_,_,Socket,_) ->
+    Head =  "HTTP/1.1 200 ok\r\n"
+        "Content-Length:32\r\n"
+	"Transfer-Encoding:Chunked\r\n\r\n",
+    send(Socket, Head),
+    send(Socket, http_chunk:encode("<HTML><BODY>fo")),
+    send(Socket, http_chunk:encode("obar</BODY></HTML>")),
+    http_chunk:encode_last();
+
 handle_uri(_,"/capital_transfer_encoding.html",_,_,Socket,_) ->
     Head =  "HTTP/1.1 200 ok\r\n" ++
 	"Transfer-Encoding:Chunked\r\n\r\n",
@@ -2030,6 +2125,9 @@ handle_uri(_,"/multipart_chunks.html",_,_,Socket,_) ->
     send(Socket, Head),
     send_multipart_chunks(Socket),
     http_chunk:encode_last();
+handle_uri(_,"/delay_close.html",_,_,Socket,_) ->
+    ct:sleep(10000),
+    close(Socket);
 handle_uri("HEAD",_,_,_,_,_) ->
     "HTTP/1.1 200 ok\r\n" ++
 	"Content-Length:0\r\n\r\n";
diff --git a/lib/inets/test/httpd_SUITE.erl b/lib/inets/test/httpd_SUITE.erl
index 6c8728470b..9a85c51d24 100644
--- a/lib/inets/test/httpd_SUITE.erl
+++ b/lib/inets/test/httpd_SUITE.erl
@@ -129,7 +129,7 @@ groups() ->
      {http_1_1, [],
       [host, chunked, expect, cgi, cgi_chunked_encoding_test,
        trace, range, if_modified_since, mod_esi_chunk_timeout,
-       esi_put] ++ http_head() ++ http_get() ++ load()},
+       esi_put, esi_post] ++ http_head() ++ http_get() ++ load()},
      {http_1_0, [], [host, cgi, trace] ++ http_head() ++ http_get() ++ load()},
      {http_0_9, [], http_head() ++ http_get() ++ load()}
     ].
@@ -923,8 +923,11 @@ esi(Config) when is_list(Config) ->
 		      {no_header, "cache-control"}]),
     ok = http_status("GET /cgi-bin/erl/httpd_example:peer ",
 	  	     Config, [{statuscode, 200},
-	 	      {header, "peer-cert-exist", peer(Config)}]).
-
+                              {header, "peer-cert-exist", peer(Config)}]),
+    ok = http_status("GET /cgi-bin/erl/httpd_example:new_status_and_location ",
+                     Config, [{statuscode, 201},
+                              {header, "location"}]).
+    
 %%-------------------------------------------------------------------------
 esi_put() ->
     [{doc, "Test mod_esi PUT"}].
@@ -932,7 +935,20 @@ esi_put() ->
 esi_put(Config) when is_list(Config) ->
     ok = http_status("PUT /cgi-bin/erl/httpd_example/put/123342234123 ",
 		     Config, [{statuscode, 200}]).
- 
+%%-------------------------------------------------------------------------
+esi_post() ->
+    [{doc, "Test mod_esi POST"}].
+
+esi_post(Config) when is_list(Config) ->
+    Chunk = "ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ",
+    Data = lists:duplicate(10000, Chunk),
+    Length = lists:flatlength(Data),
+    ok = http_status("POST /cgi-bin/erl/httpd_example/post ",
+                     {"Content-Length:" ++ integer_to_list(Length) ++ "\r\n",
+                      Data},
+                     [{http_version, "HTTP/1.1"} |Config], 
+                     [{statuscode, 200}]).
+
 %%-------------------------------------------------------------------------
 mod_esi_chunk_timeout(Config) when is_list(Config) -> 
     ok = httpd_1_1:mod_esi_chunk_timeout(proplists:get_value(type, Config), 
diff --git a/lib/inets/test/httpd_basic_SUITE.erl b/lib/inets/test/httpd_basic_SUITE.erl
index 931cd076cc..94d22ea76c 100644
--- a/lib/inets/test/httpd_basic_SUITE.erl
+++ b/lib/inets/test/httpd_basic_SUITE.erl
@@ -303,7 +303,10 @@ escaped_url_in_error_body(Config) when is_list(Config) ->
     %% Ask for a non-existing page(1)
     Path            = "/<b>this_is_bold<b>",
     HTMLEncodedPath = http_util:html_encode(Path),
-    URL2            = URL1 ++ Path,
+    URL2 = uri_string:recompose(#{scheme => "http",
+                                  host => "localhost",
+                                  port => Port,
+                                  path => Path}),
     {ok, {404, Body3}} = httpc:request(get, {URL2, []},
 				       [{url_encode,  true}, 
 					{version,     "HTTP/1.0"}],
diff --git a/lib/inets/test/httpd_bench_SUITE.erl b/lib/inets/test/httpd_bench_SUITE.erl
new file mode 100644
index 0000000000..9d8cbf9ae2
--- /dev/null
+++ b/lib/inets/test/httpd_bench_SUITE.erl
@@ -0,0 +1,846 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2012. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+
+%%
+-module(httpd_bench_SUITE).
+-compile(export_all).
+
+-include_lib("common_test/include/ct.hrl").
+-include_lib("common_test/include/ct_event.hrl").
+-include_lib("public_key/include/public_key.hrl").
+-include_lib("kernel/include/file.hrl").
+
+-define(remote_host, "NETMARKS_REMOTE_HOST").
+-define(LF, [10]).
+-define(CR, [13]).
+-define(CRLF, ?CR ++ ?LF).
+
+%%--------------------------------------------------------------------
+%% Common Test interface functions -----------------------------------
+%%--------------------------------------------------------------------
+suite() -> 
+    [{ct_hooks,[{ts_install_cth,[{nodenames,2}]}]}].
+
+all() -> 
+    [
+     {group, http_dummy},
+     {group, http_inets},
+     {group, http_nginx},
+     {group, https_inets},
+     {group, https_dummy},
+     {group, https_nginx},
+     {group, http_dummy_keep_alive},
+     {group, http_inets_keep_alive},
+     {group, http_nginx_keep_alive},
+     {group, https_inets_keep_alive},
+     {group, https_dummy_keep_alive},
+     {group, https_nginx_keep_alive}
+    ].
+
+groups() -> 
+    [
+     {http_dummy, [],  client_tests()},
+     {http_inets, [],   client_tests()},
+     {http_nginx, [],   client_tests()},
+     {https_dummy, [],  client_tests()}, 
+     {https_inets, [],  client_tests()},
+     {https_nginx, [],  client_tests()},
+     {http_dummy_keep_alive, [],  client_tests()},
+     {http_inets_keep_alive, [],  client_tests()},
+     {http_nginx_keep_alive, [],  client_tests()},
+     {https_dummy_keep_alive, [], client_tests()},
+     {https_inets_keep_alive, [], client_tests()},
+     {https_nginx_keep_alive, [], client_tests()}
+    ].
+
+    
+client_tests() ->
+    [wget_small,
+     erl_dummy_small,
+     httpc_small,
+     wget_big,
+     erl_dummy_big, 
+     httpc_big
+    ].
+
+init_per_suite(Config) -> 
+    try	
+	{Node, Host} = setup(Config, node()),
+	init_ssl(Config),
+	[{iter, 10}, {server_node, Node}, {server_host, Host} | Config]
+    catch _:_ ->
+	    {skipped, "Benchmark machines only"}
+    end.
+
+end_per_suite(_Config) -> 
+    [application:stop(App) || App <- [asn1, crypto, public_key, ssl, inets]].
+
+init_per_group(Group, Config) when Group == http_dummy_keep_alive; 
+				   Group == https_dummy_keep_alive;
+				   Group == http_inets_keep_alive; 
+				   Group == https_inets_keep_alive;
+				   Group == http_nginx_keep_alive;
+				   Group == https_nginx_keep_alive ->
+    Version = http_version(Group),
+    start_web_server(Group,
+		     [{keep_alive, true}, 
+		      {reuse_sessions, false},
+		      {http_version, Version},
+		      {http_opts,[{version, Version}]},
+		      {http_headers, [{"connection", "keep-alive"}]},
+		      {httpc_opts, [{keep_alive_timeout, 1500}, 
+				    {max_keep_alive_length, ?config(iter, Config)}]}
+		      | Config]);
+init_per_group(Group, Config)  when Group == http_dummy; 
+				    Group == https_dummy;
+				    Group == http_inets; 
+				    Group == https_inets;
+				    Group == http_nginx;
+				    Group == https_nginx ->
+    Version = http_version(Group),
+    start_web_server(Group, 
+		     [{keep_alive, false}, 
+		      {reuse_sessions, false},
+		      {http_version, Version},
+		      {http_headers, [{"connection", "close"}]},
+		      {http_opts,[{version, Version}]},
+		      {httpc_opts, [{keep_alive_timeout, 0}, {max_keep_alive_length, 0}]}
+		      | Config]);
+
+
+init_per_group(_, Config) ->
+    Config.
+
+end_per_group(Group, Config) ->
+    stop_web_server(Group, Config).
+
+init_per_testcase(TestCase, Config) when TestCase == httpc_small;
+					 TestCase == httpc_big
+					 -> 
+    Opts = ?config(httpc_opts, Config),
+    inets:start(httpc, [{profile, TestCase}, {socket_opts, [{nodelay, true}]}]),
+    httpc:set_options(Opts, TestCase),
+    [{profile, TestCase} | proplists:delete(profile, Config)];
+
+init_per_testcase(_, Config) -> 
+    Config.
+end_per_testcase(TestCase, _Config) when TestCase == httpc_small;
+					 TestCase == httpc_big ->	
+    ok = inets:stop(httpc, TestCase);
+end_per_testcase(_TestCase, Config) ->	
+    Config.
+%%--------------------------------------------------------------------
+%% Test Cases --------------------------------------------------------
+%%--------------------------------------------------------------------
+
+erl_dummy_small(Config) when is_list(Config) -> 
+    {ok, Result} = run_test(httpd_lib_client, "1k_file", Config),
+    notify(Result, Config, "erl_1k_file"). 
+
+erl_dummy_big(Config)  when is_list(Config) -> 
+    {ok, Result} = run_test(httpd_lib_client, "1M_file", Config),
+    notify(Result, Config, "erl_1M_file"). 
+
+wget_small(Config) when is_list(Config) -> 
+    {ok, Result} = run_test(wget_client, "1k_file", Config),
+    notify(Result, Config, "wget_1k_file"). 
+
+wget_big(Config)  when is_list(Config) -> 
+    {ok, Result} = run_test(wget_client, "1M_file", Config),
+    notify(Result, Config, "wget_1M_file"). 
+
+httpc_small(Config) when is_list(Config) -> 
+    {ok, Result} = run_test(httpc_client, "1k_file", Config),
+    notify(Result, Config, "httpc_1k_file"). 
+
+httpc_big(Config)  when is_list(Config) -> 
+    {ok, Result} = run_test(httpc_client, "1M_file", Config),
+    notify(Result, Config, "httpc_1M_file"). 
+
+%%--------------------------------------------------------------------
+%% Internal functions ------------------------------------------------
+%%--------------------------------------------------------------------
+
+%%--------------------------------------------------------------------
+%% Report benchmark results  ------------------------------------------------
+%%--------------------------------------------------------------------
+
+notify({TestPerSec, _MBps}, Config, Suffix) ->
+    Name = lists:concat([?config(protocol,Config), " ", 
+			 server_name(Config, [dummy_pid, httpd_pid, nginx_port]), 
+			 "", Suffix]),
+    ct:comment("~p tps", [TestPerSec]),
+    ct_event:notify(#event{name = benchmark_data,
+			   data=[{value, TestPerSec},
+				 {suite, ?MODULE},
+				 {name, Name}]}),
+			 ok.
+%%--------------------------------------------------------------------
+%% Setup erlang nodes  ------------------------------------------------
+%%--------------------------------------------------------------------
+
+server_name(Config, [Server | Rest]) ->
+    case proplists:get_value(Server, Config) of
+	undefined ->
+	    server_name(Config, Rest);
+	_ ->
+	    server_name(Server)
+    end.
+
+server_name(httpd_pid) ->   
+   "inets";
+server_name(nginx_port) -> 
+    "nginx";
+server_name(dummy_pid) ->
+    "erlang".
+
+setup(_Config, nonode@nohost) ->
+    exit(dist_not_enabled);
+setup(_Config, _LocalNode) ->
+    Host = case os:getenv(?remote_host) of
+	       false ->
+		   {ok, This} = inet:gethostname(),
+		   This;
+	       RemHost ->
+		   RemHost
+	   end,
+    Node = list_to_atom("inets_perf_server@" ++ Host),
+    SlaveArgs = case init:get_argument(pa) of
+	       {ok, PaPaths} ->
+		   lists:append([" -pa " ++ P || [P] <- PaPaths]);
+	       _ -> []
+	   end,
+    Prog =
+	case os:find_executable("erl") of
+	    false -> "erl";
+	    P -> P
+	end,
+    case net_adm:ping(Node) of
+	pong -> ok;
+	pang ->
+	    {ok, Node} = slave:start(Host, inets_perf_server, SlaveArgs, no_link, Prog)
+    end,
+    Path = code:get_path(),
+    true = rpc:call(Node, code, set_path, [Path]),
+    [ensure_started(Node, App) || App <- [asn1, crypto, public_key, ssl, inets]],
+    [ensure_started(node(), App) || App <- [asn1, crypto, public_key, ssl, inets]],
+    (Node =:= node()) andalso restrict_schedulers(client),
+    {Node, Host}.
+
+ensure_started(Node, App) ->
+     ok = rpc:call(Node, application, ensure_started, [App]).
+
+
+restrict_schedulers(Type) ->
+    %% We expect this to run on 8 core machine
+    Extra0 = 1,
+    Extra =  if (Type =:= server) -> -Extra0; true -> Extra0 end,
+    Scheds = erlang:system_info(schedulers),
+    erlang:system_flag(schedulers_online, (Scheds div 2) + Extra).
+
+%%--------------------------------------------------------------------
+%% Setup TLS input files  ------------------------------------------------
+%%--------------------------------------------------------------------
+
+init_ssl(Config) ->
+    DDir = ?config(data_dir, Config),
+    PDir = ?config(priv_dir, Config),
+    {ok, _} = make_certs:all(DDir,
+			     PDir).
+cert_opts(Config) ->
+    ClientCaCertFile = filename:join([?config(priv_dir, Config), 
+				      "client", "cacerts.pem"]),
+    ClientCertFile = filename:join([?config(priv_dir, Config), 
+				    "client", "cert.pem"]),
+    ServerCaCertFile = filename:join([?config(priv_dir, Config), 
+				      "server", "cacerts.pem"]),
+    ServerCertFile = filename:join([?config(priv_dir, Config), 
+				    "server", "cert.pem"]),
+    ServerKeyFile = filename:join([?config(priv_dir, Config), 
+			     "server", "key.pem"]),
+    ClientKeyFile = filename:join([?config(priv_dir, Config), 
+				   "client", "key.pem"]),
+    [{server_verification_opts, [{reuseaddr, true}, 
+				 {cacertfile, ServerCaCertFile},
+				 {ciphers, ["ECDHE-RSA-AES256-GCM-SHA384"]},
+				 {certfile, ServerCertFile}, {keyfile, ServerKeyFile}]},
+     {client_verification_opts, [
+				 %%{verify, verify_peer},
+				 {cacertfile, ClientCaCertFile}, 
+				 {certfile, ClientCertFile},  
+				 {keyfile, ClientKeyFile}]}]. 
+
+%%--------------------------------------------------------------------
+%% Run clients  ------------------------------------------------
+%%--------------------------------------------------------------------
+
+run_test(Client, File, Config) -> 
+    Parent = self(),
+    Pid = spawn(fun() ->
+			receive
+			    go -> 
+				Parent ! {self(),
+					  do_runs(Client, [{file, File} | Config])}
+			end
+		end),
+    Pid ! go,
+    receive
+	{Pid,{{tps, Tps}, {mbps, MBps}}} ->
+	    ct:pal("Tps: ~p  Bps~p", [Tps, MBps]),
+	    {ok, {Tps, MBps}}
+    end.
+
+do_runs(Client, Config) ->
+    N = ?config(iter, Config),
+    DataDir = ?config(data_dir, Config),
+    File = ?config(file, Config),
+    Name = filename:join(DataDir, File), 
+    Args = ?MODULE:Client(Config),
+    ?MODULE:Client({init, Args}),
+    Run = 
+	fun() ->
+		ok = ?MODULE:Client(Args, N)	
+	end,
+    {ok, Info} = file:read_file_info(Name, []),
+    Length = Info#file_info.size,
+    {TimeInMicro, _} = timer:tc(Run),
+    ReqPerSecond = (1000000 * N) div TimeInMicro,
+    BytesPerSecond = (1000000 * N * Length) div TimeInMicro,
+    {{tps, ReqPerSecond}, {mbps, BytesPerSecond}}.
+
+
+httpc_client({init, [_, Profile, URL, Headers, HTTPOpts]}) ->
+     %% Make sure pipelining feature will kick in when appropriate. 
+    {ok, {{_ ,200, "OK"}, _,_}} = httpc:request(get,{URL, Headers}, HTTPOpts, 
+						[{body_format, binary}, 
+						 {socket_opts, [{nodelay, true}]}], Profile),
+    ct:sleep(1000);
+httpc_client(Config) ->
+    File = ?config(file, Config),
+    Protocol = ?config(protocol, Config),
+    Profile = ?config(profile, Config),
+    URL = (?config(urlfun,Config))(File),
+    Headers =  ?config(http_headers, Config),
+    HTTPOpts = ?config(http_opts, Config),
+    [Protocol, Profile, URL, Headers, HTTPOpts].
+httpc_client(_,0) ->
+    ok;
+httpc_client([Protocol, Profile, URL, Headers, HTTPOpts], N) ->
+    {ok, {{_ ,200,"OK"}, _,_}} = httpc:request(get,{URL, Headers}, HTTPOpts, [{body_format, binary},
+									     {socket_opts, [{nodelay, true}]}], Profile),
+    httpc_client([Protocol, Profile, URL, Headers, HTTPOpts], N-1).
+
+httpd_lib_client({init, [_, Type, Version, Request, Host, Port, Opts]}) ->
+    ok = httpd_test_lib:verify_request(Type, Host, 
+     				       Port,  
+     				       Opts, node(),
+     				       Request,
+     				       [{statuscode, 200},
+     					{version, Version}], infinity),
+    ct:sleep(1000);
+httpd_lib_client(Config) ->
+    File = ?config(file, Config),
+    KeepAlive = ?config(keep_alive, Config),
+    Host = ?config(server_host, Config),
+    Port = ?config(port, Config),
+    ReuseSession = ?config(reuse_sessions, Config),
+    {Type, Opts} = 
+	case ?config(protocol, Config) of
+	    "http" ->
+		{ip_comm, [{active, true}, {mode, binary},{nodelay, true}]};
+	    "https" ->	
+		SSLOpts =  proplists:get_value(client_verification_opts, cert_opts(Config)),
+		{ssl, [{active, true}, {mode, binary}, {nodelay, true},  
+		       {reuse_sessions, ReuseSession} | SSLOpts]}
+		    
+	end,
+    Version = ?config(http_version, Config),
+    Request = case KeepAlive of
+		  true ->
+		      http_request("GET /" ++ File ++ " ", Version, Host, {"connection:keep-alive\r\n", ""});
+		  false ->
+		      http_request("GET /" ++ File ++ " ", Version, Host)
+	      end,
+    
+    Args = [KeepAlive, Type, Version, Request, Host, Port, Opts],
+    httpd_lib_client(Args, 1),
+    Args.
+
+httpd_lib_client(_, 0) ->
+    ok;
+httpd_lib_client([true, Type, Version, Request, Host, Port, Opts], N) ->
+    ok = httpd_test_lib:verify_request_N(Type, Host, 
+					 Port,  
+					 Opts, node(),
+					 Request,
+					 [{statuscode, 200},
+					  {version, Version}], infinity, N);
+httpd_lib_client([false, Type, Version, Request, Host, Port, Opts] = List, N) ->
+    ok = httpd_test_lib:verify_request(Type, Host, 
+				       Port,  
+				       Opts, node(),
+				       Request,
+				       [{statuscode, 200},
+					{version, Version}], infinity),
+    httpd_lib_client(List, N-1).
+
+wget_client({init,_}) ->
+    ok;
+wget_client(Config) ->
+    File = ?config(file, Config),
+    URL = (?config(urlfun,Config))(File),
+    KeepAlive = ?config(keep_alive, Config),
+    PrivDir = ?config(priv_dir, Config),
+    Protocol = ?config(protocol, Config),
+    Iter = ?config(iter, Config),
+    FileName = filename:join(PrivDir, "wget_req"),
+    ProtocolOpts = case Protocol of
+		    "http" ->
+			   [];
+		       "https" ->
+			   proplists:get_value(client_verification_opts, cert_opts(Config))
+		   end,
+    wget_req_file(FileName,URL,Iter),
+    [KeepAlive, FileName, URL, Protocol, ProtocolOpts, Iter].
+wget_client([KeepAlive, WgetFile, _URL, Protocol, ProtocolOpts, _], _) ->
+    process_flag(trap_exit, true),
+    Cmd = wget_N(KeepAlive, WgetFile, Protocol, ProtocolOpts),
+    %%ct:pal("Wget cmd: ~p", [Cmd]),
+    Port = open_port({spawn, Cmd}, [stderr_to_stdout]), 
+    wait_for_wget(Port).
+
+
+%%--------------------------------------------------------------------
+%% Start/stop servers  ------------------------------------------------
+%%--------------------------------------------------------------------
+start_web_server(Group, Config) when Group == http_dummy;
+				     Group == http_dummy_keep_alive ->
+    start_dummy("http", Config);
+
+start_web_server(Group, Config) when Group == https_dummy;
+				     Group == https_dummy_keep_alive ->
+    start_dummy("https", Config);
+
+start_web_server(Group, Config) when Group == http_inets;
+				     Group == http_inets_keep_alive ->
+    start_inets("http", [], Config);
+    
+start_web_server(Group, Config) when Group == https_inets;
+				     Group == https_inets_keep_alive ->
+    Opts = proplists:get_value(server_verification_opts, cert_opts(Config)),
+    ReuseSessions = ?config(reuse_sessions, Config),
+    SSLConfHttpd = [{socket_type, {essl,
+				   [{nodelay, true}, {reuse_sessions, ReuseSessions} | Opts]}}],
+    start_inets("https", SSLConfHttpd, Config);
+
+start_web_server(Group, Config)  when Group == http_nginx;
+				      Group == http_nginx_keep_alive ->
+    case os:find_executable("nginx") of
+	false ->
+	    {skip, "nginx not found"};
+	_ ->
+	    start_nginx("http",  Config)
+    end;
+
+start_web_server(Group, Config)  when Group == https_nginx;
+				      Group == https_nginx_keep_alive ->
+     case os:find_executable("nginx") of
+	false ->
+	    {skip, "nginx not found"};
+	 _ ->
+	     start_nginx("https",  cert_opts(Config) ++ Config)  
+     end.
+   
+start_inets(Protocol, ConfHttpd, Config) ->
+    PrivDir = ?config(priv_dir, Config),
+    DataDir = ?config(data_dir, Config),
+    Node = ?config(server_node, Config),
+    Host = ?config(server_host, Config),    
+    HTTPVersion = ?config(http_version, Config),    
+    Conf = [httpd, [{port,0},
+		    {http_version, HTTPVersion},
+		    {ipfamily, inet},
+		    {server_name, "inets_test"},
+		    {server_root, PrivDir}, 
+		    {document_root, DataDir},
+		    {keep_alive, ?config(keep_alive, Config)},
+		    {keep_alive_timeout, 360}
+		    | ConfHttpd]],
+    {ok, Pid} = rpc:call(Node, inets, start, Conf),
+    Port = proplists:get_value(port,  rpc:call(Node, httpd, info, [Pid])),
+    F = fun(File) -> 
+		lists:concat([Protocol,"://",Host,":",Port,"/",File]) 
+	end,
+    [{httpd_pid,Pid},{urlfun,F},{protocol,Protocol},{port,Port} | Config].
+
+start_dummy("http"= Protocol, Config) ->
+    HTTPVersion = ?config(http_version, Config),    
+    Node = ?config(server_node, Config),
+    %%DataDir= ?config(data_dir, Config),
+    Host = ?config(server_host, Config),
+    Conf = [
+	    %%{big, filename:join(DataDir, "1M_file")},
+	    %%{small, filename:join(DataDir, "1k_file")},
+	    {big, {gen,  crypto:rand_bytes(1000000)}},
+	    {small, {gen,  crypto:rand_bytes(1000)}},
+	    {http_version, HTTPVersion},
+	    {keep_alive,  ?config(keep_alive, Config)}
+	   ],
+    {Pid, Port} = rpc:call(Node, http_test_lib, dummy_server, [ip_comm, inet, [{content_cb, ?MODULE}, {conf, Conf}]]),
+    F = fun(File) -> 
+		lists:concat([Protocol,"://",Host,":",Port,"/",File]) 
+	end,
+    [{dummy_pid,Pid},{urlfun,F},{protocol, Protocol},{port,Port} | Config];
+
+start_dummy("https" = Protocol, Config) ->
+    HTTPVersion = ?config(http_version, Config),    
+    Node = ?config(server_node, Config),
+    %% DataDir= ?config(data_dir, Config),
+    Host = ?config(server_host, Config),
+    SSLOpts =  proplists:get_value(server_verification_opts, cert_opts(Config)),
+    Opts = [{active, true}, {nodelay, true}, {reuseaddr, true} | SSLOpts],
+    Conf = [%%{big, filename:join(DataDir, "1M_file")},
+	    %%{small, filename:join(DataDir, "1k_file")},
+	    {big, {gen, crypto:rand_bytes(1000000)}},
+	    {small, {gen, crypto:rand_bytes(1000)}},
+	    {http_version, HTTPVersion},
+	    {keep_alive, ?config(keep_alive, Config)}
+	   ],
+    {Pid, Port} = rpc:call(Node, http_test_lib, dummy_server,
+			   [ssl, inet, [{ssl, Opts}, {content_cb, ?MODULE}, {conf, Conf}]]),
+    F = fun(File) -> 
+		lists:concat([Protocol,"://",Host,":",Port,"/",File]) 
+	end,
+    [{dummy_pid,Pid},{urlfun,F},{protocol,Protocol},{port,Port} | Config].
+
+start_nginx(Protocol, Config) ->
+    PrivDir = ?config(priv_dir, Config),
+    DataDir = ?config(data_dir, Config),
+    Host = ?config(server_host, Config),    
+    Port = inet_port(node()),
+    
+    ConfFile = filename:join(PrivDir, "nginx.conf"),
+    nginx_conf(ConfFile, [{port, Port}, {protocol, Protocol} | Config]),
+    Cmd = "nginx -c " ++ ConfFile, 
+    NginxPort =  open_port({spawn, Cmd}, [{cd, DataDir}, stderr_to_stdout]), 
+
+    F = fun(File) -> 
+ 		lists:concat([Protocol,"://",Host,":",Port,"/",File]) 
+	end,
+    
+    wait_for_nginx_up(Host, Port),
+   
+    [{port, Port},{nginx_port, NginxPort},{urlfun,F},{protocol, Protocol} | Config ].
+
+stop_nginx(Config)->
+    PrivDir = ?config(priv_dir, Config),    
+    {ok, Bin} = file:read_file(filename:join(PrivDir, "nginx.pid")),
+    Pid = string:strip(binary_to_list(Bin), right, $\n),
+    Cmd = "kill " ++ Pid,
+    os:cmd(Cmd).
+    
+stop_web_server(Group, Config) when  Group == http_inets;
+				     Group == http_inets_keep_alive;
+				     Group == https_inets;
+				     Group == https_inets_keep_alive -> 
+    ServerNode = ?config(server_node, Config),
+    rpc:call(ServerNode, inets, stop, [httpd, ?config(httpd_pid, Config)]);
+stop_web_server(Group, Config) when  Group == http_dummy;
+				     Group == http_dummy_keep_alive;
+				     Group == https_dummy;
+				     Group == https_dummy_keep_alive -> 
+    stop_dummy_server(Config);
+stop_web_server(Group, Config) when  Group == http_nginx;
+				     Group == http_nginx_keep_alive;
+				     Group == https_nginx;
+				     Group == https_nginx_keep_alive -> 
+    stop_nginx(Config).
+
+stop_dummy_server(Config) ->    
+      case ?config(dummy_pid, Config) of
+	  Pid when is_pid(Pid) ->
+	      exit(Pid, kill);
+	  _ ->
+	      ok
+      end.
+
+%%--------------------------------------------------------------------
+%% Misc  ------------------------------------------------
+%%--------------------------------------------------------------------
+http_request(Request, "HTTP/1.1" = Version, Host, {Headers, Body}) ->
+    Request ++ Version ++ "\r\nhost:" ++ Host ++ "\r\n" ++ Headers ++ "\r\n" ++ Body;
+http_request(Request, Version, _, {Headers, Body}) ->
+    Request ++ Version ++ "\r\n" ++ Headers  ++ "\r\n" ++ Body.
+
+http_request(Request, "HTTP/1.1" = Version, Host) ->
+    Request ++ Version ++ "\r\nhost:" ++ Host  ++ "\r\n\r\n";
+http_request(Request, Version, _) ->
+    Request ++ Version ++ "\r\n\r\n".
+
+http_version(_) ->
+    "HTTP/1.1".
+
+inet_port(Node) ->
+    {Port, Socket} = do_inet_port(Node),
+     rpc:call(Node, gen_tcp, close, [Socket]),
+     Port.
+
+do_inet_port(Node) ->
+    {ok, Socket} = rpc:call(Node, gen_tcp, listen, [0, [{reuseaddr, true}]]),
+    {ok, Port} = rpc:call(Node, inet, port, [Socket]),
+    {Port, Socket}.
+ 
+%%--------------------------------------------------------------------
+%% Dummy server callbacks  ------------------------------------------------
+%%--------------------------------------------------------------------
+
+handle_request(CB, S, "/1M_file" ++ _, Opts) ->
+    Name = proplists:get_value(big, Opts),
+    KeepAlive = proplists:get_value(keep_alive, Opts),
+    do_handle_request(CB, S, Name, Opts, KeepAlive);
+handle_request(CB, S, "/1k_file" ++ _, Opts) ->
+    Name = proplists:get_value(small, Opts),
+    KeepAlive = proplists:get_value(keep_alive, Opts),
+    do_handle_request(CB, S, Name, Opts, KeepAlive).
+
+do_handle_request(CB, S, Name, Opts, KeepAlive) when is_list(Name) ->
+    Version = proplists:get_value(http_version, Opts),
+    {ok, Fdesc} = file:open(Name, [read, binary]),
+    {ok, Info} = file:read_file_info(Name, []),
+    Length = Info#file_info.size,
+    Response = response_status_line_and_headers(Version, "Content-Length:" 
+						++ integer_to_list(Length) ++ ?CRLF, keep_alive(KeepAlive)), 
+    CB:send(S, Response),
+    send_file(CB, S, Fdesc);
+do_handle_request(CB, S, {gen, Data}, Opts, KeepAlive) ->
+    Version = proplists:get_value(http_version, Opts),
+    Length = size(Data),
+    Response = response_status_line_and_headers(Version, "Content-Length:" 
+						++ integer_to_list(Length) ++ ?CRLF, keep_alive(KeepAlive)), 
+    CB:send(S, Response),
+    send_file(CB, S, {gen, Data}).
+    
+send_file(CB, S, {gen, Data})  ->
+    CB:send(S, Data);
+    %% ChunkSize = 64*1024,
+    %% case size(Data) of
+    %% 	N when N > ChunkSize ->
+    %% 	    <<Chunk:N/binary, Rest/binary>> = Data,
+    %% 	    %%{Chunk, Rest} = lists:split(N, Data),
+    %% 	    CB:send(S, Chunk),
+    %% 	    send_file(CB, S, {gen, Rest});
+    %% 	_ ->
+    %% 	    CB:send(S, Data)
+    %% end; 
+
+send_file(CB, S, FileDesc) ->
+    case file:read(FileDesc, 64*1024) of
+	{ok, Chunk} ->
+	    CB:send(S, Chunk),
+	    send_file(CB, S, FileDesc);	
+	eof ->
+	    file:close(FileDesc),
+	    ok
+    end.
+
+response_status_line_and_headers(Version, Headers,  ConnectionHeader) -> 
+    StatusLine = [Version, " ", "200 OK", ?CRLF],
+    [StatusLine, Headers, ConnectionHeader, ?CRLF].
+
+keep_alive(true)->
+    "Connection:keep-alive\r\n";
+keep_alive(false) ->
+    "Connection:close\r\n".
+
+handle_http_msg({_Method, RelUri, _, {_, _Headers}, _Body}, Socket, Conf) ->
+    handle_request(connect_cb(Socket), Socket, RelUri, Conf),
+    case proplists:get_value(keep_alive, Conf) of
+	true ->
+	    <<>>;
+	false ->
+	    stop
+    end.
+    
+connect_cb({sslsocket, _, _}) ->
+    ssl;
+connect_cb(_) ->
+    gen_tcp.
+
+%%--------------------------------------------------------------------
+%% Setup wget  ------------------------------------------------
+%%--------------------------------------------------------------------
+wget_req_file(FileName, Url, Iter) ->
+    {ok, File} = file:open(FileName, [write]),
+    write_urls(File, Url, Iter).
+
+write_urls(File, Url, 1) ->
+    file:write(File, Url), 
+    file:close(File);
+write_urls(File, Url, N) ->
+    file:write(File, Url), 
+    file:write(File, "\n"),
+    write_urls(File, Url, N-1).
+    
+wait_for_wget(Port) ->
+    receive 
+	{Port, {data, _Data}} when is_port(Port) ->
+	    wait_for_wget(Port);
+	{Port, closed} -> 
+	    ok;
+	{'EXIT', Port, _Reason} ->
+	    ok
+    end.
+
+wget_N(KeepAlive, WegetFile, "http", _ProtocolOpts) ->
+    "wget -i " ++ WegetFile ++ " " ++ wget_keep_alive(KeepAlive) ++ 
+	" --no-cache --timeout=120" ;
+wget_N(KeepAlive, WegetFile, "https", ProtocolOpts) ->
+    
+    "wget -i " ++ WegetFile ++ " " ++ wget_keep_alive(KeepAlive) 
+	++ wget_cert(ProtocolOpts) ++ wget_key(ProtocolOpts)
+	++ wget_cacert(ProtocolOpts) ++ 
+	" --no-cache --timeout=120".
+
+wget(KeepAlive, URL, "http", _ProtocolOpts) ->
+    "wget " ++ URL ++ " " ++ wget_keep_alive(KeepAlive) ++ 
+	" --no-cache --timeout=120" ;
+wget(KeepAlive, URL, "https", ProtocolOpts) ->
+    
+    "wget " ++ URL ++ " " ++ wget_keep_alive(KeepAlive) 
+	++ wget_cert(ProtocolOpts) ++ wget_key(ProtocolOpts)
+	++ wget_cacert(ProtocolOpts) ++ 
+	" --no-cache --timeout=120".
+
+wget_keep_alive(true)->
+    "";
+wget_keep_alive(false) ->
+   "--no-http-keep-alive ".
+
+wget_cacert(ProtocolOpts) ->
+    "--ca-certificate=" ++ proplists:get_value(cacertfile, ProtocolOpts) ++ " ".
+
+wget_cert(ProtocolOpts) ->
+    "--certificate=" ++ proplists:get_value(certfile, ProtocolOpts) ++ " ".
+
+wget_key(ProtocolOpts) ->
+    "--private-key=" ++ proplists:get_value(keyfile, ProtocolOpts) ++ " ".
+
+%%--------------------------------------------------------------------
+%% Setup nginx  ------------------------------------------------
+%%--------------------------------------------------------------------
+nginx_conf(ConfFile, Config)->
+    Protocol = ?config(protocol, Config),
+    file:write_file(ConfFile,
+		    [format_nginx_conf(nginx_global(Config)),
+		     format_nginx_conf(nginx_events(Config)),
+		     format_nginx_conf(nginx_http(Protocol, Config))]).
+       
+format_nginx_conf(Directives) ->
+    lists:map(fun({Key, Value}) ->
+			  io_lib:format("~s ~s;\n", [Key, Value]);
+		     (Str) ->
+			  Str    
+		  end, Directives).
+
+
+nginx_global(Config) ->
+    PrivDir = ?config(priv_dir, Config),
+    [{"pid", filename:join(PrivDir, "nginx.pid")},
+     {"error_log",  filename:join(PrivDir, "nginx.pid")},
+     {"worker_processes", "1"}].
+
+nginx_events(_Config) ->
+    ["events {\n",
+     {"worker_connections",  "1024"},
+     "\n}"
+    ].
+
+nginx_http("http", Config) ->
+    PrivDir = ?config(priv_dir, Config),
+    DataDir = ?config(data_dir, Config),
+    Port = ?config(port, Config),
+    ["http {\n" |
+     nginx_defaults(PrivDir) ++
+	 [" server {",
+	  {root,                DataDir}, 
+	  {listen,              integer_to_list(Port)},
+	  " location / {\n  try_files $uri $uri/ /index.html;\n}"
+	  "}\n", "}\n"
+	 ]
+    ];
+	
+nginx_http("https", Config) ->
+    PrivDir = ?config(priv_dir, Config),
+    DataDir = ?config(data_dir, Config),
+    Port = ?config(port, Config),
+    SSLOpts = ?config(server_verification_opts, Config),
+    Ciphers = proplists:get_value(ciphers, SSLOpts),
+    ReuseSession = ?config(reuse_sessions, Config),
+    ["http {" |
+     nginx_defaults(PrivDir) ++
+	 [" server {",
+	  {"root",                DataDir}, 
+	  {"listen",              integer_to_list(Port) ++ " ssl"},
+	  {"ssl_certificate",     ?config(certfile, SSLOpts)},
+	  {"ssl_certificate_key", ?config(keyfile, SSLOpts)},
+	  {"ssl_protocols",       "TLSv1 TLSv1.1 TLSv1.2"},
+	  {"ssl_ciphers",         Ciphers}, 
+	  {"ssl_session_cache",    nginx_reuse_session(ReuseSession)},
+	  " location / {\n  try_files $uri $uri/ /index.html;\n}"
+	  "}\n", "}\n"
+	 ]
+    ].
+	
+nginx_defaults(PrivDir) ->
+    [
+     %% Set temp and cache file options that will otherwise default to
+     %% restricted locations accessible only to root.
+     {"client_body_temp_path", filename:join(PrivDir, "client_body")},
+     {"fastcgi_temp_path",   filename:join(PrivDir, "fastcgi_temp")}, 
+     {"proxy_temp_path", filename:join(PrivDir, "proxy_temp")},
+     {"scgi_temp_path", filename:join(PrivDir, "scgi_temp")},
+     {"uwsgi_temp_path", filename:join(PrivDir, "uwsgi_temp_path")},
+     {"access_log",  filename:join(PrivDir, "access.log")},
+     {"error_log",   filename:join(PrivDir, "error.log")},
+     %% Standard options
+     {"sendfile", "on"},
+     {"tcp_nopush", "on"},
+     {"tcp_nodelay", "on"},
+     {"keepalive_timeout",  "360"},
+     {"types_hash_max_size", "2048"},
+     {"include", "/etc/nginx/mime.types"},
+     {"default_type", "application/octet-stream"}
+    ].
+
+nginx_reuse_session(true) ->
+    "on";
+nginx_reuse_session(false) ->
+    "off".
+
+wait_for_nginx_up(Host, Port) ->
+    case gen_tcp:connect(Host, Port, []) of
+	{ok, Socket} ->
+	    gen_tcp:close(Socket);
+	_  ->
+	    ct:sleep(100),
+	    wait_for_nginx_up(Host, Port)
+    end.
+		
diff --git a/lib/inets/test/httpd_bench_SUITE_data/1M_file b/lib/inets/test/httpd_bench_SUITE_data/1M_file
new file mode 100644
index 0000000000..557989144e
--- /dev/null
+++ b/lib/inets/test/httpd_bench_SUITE_data/1M_file
diff --git a/lib/inets/test/httpd_bench_SUITE_data/1k_file b/lib/inets/test/httpd_bench_SUITE_data/1k_file
new file mode 100644
index 0000000000..cade172d80
--- /dev/null
+++ b/lib/inets/test/httpd_bench_SUITE_data/1k_file
diff --git a/lib/inets/test/httpd_mod.erl b/lib/inets/test/httpd_mod.erl
index d9118aa1a4..2035b50248 100644
--- a/lib/inets/test/httpd_mod.erl
+++ b/lib/inets/test/httpd_mod.erl
@@ -779,9 +779,14 @@ esi(Type, Port, Host, Node) ->
 				       [{statuscode, 200},
 					{no_header, "cache-control"},
 					{version, "HTTP/1.0"}]),
+    ok = httpd_test_lib:verify_request(Type, Host, Port, Node,
+				       "GET /cgi-bin/erl/httpd_example:new_status_and_location"
+				       " HTTP/1.1\r\n\r\n",
+				       [{statuscode, 201},
+                                        {header, "Location"},
+					{version, "HTTP/1.1"}]),
     ok.
 
-
 %%--------------------------------------------------------------------
 get(Type, Port, Host, Node) ->
     ok = httpd_test_lib:verify_request(Type, Host, Port, Node,
diff --git a/lib/inets/test/httpd_test_lib.erl b/lib/inets/test/httpd_test_lib.erl
index 1cecd2642c..b6525037b2 100644
--- a/lib/inets/test/httpd_test_lib.erl
+++ b/lib/inets/test/httpd_test_lib.erl
@@ -23,7 +23,8 @@
 -include("inets_test_lib.hrl").
 
 %% Poll functions
--export([verify_request/6, verify_request/7, verify_request/8, is_expect/1]).
+-export([verify_request/6, verify_request/7, verify_request/8, is_expect/1,
+	 verify_request_N/9]).
 
 -record(state, {request,        % string()
 		socket,         % socket()
@@ -109,9 +110,9 @@ verify_request(SocketType, Host, Port, TranspOpts, Node, RequestStr, Options, Ti
 		    {error, Reason};
 		NewState ->
 		    ValidateResult = 
-			validate(RequestStr, NewState, Options, Node, Port),
+		   	validate(RequestStr, NewState, Options, Node, Port),
 		    inets_test_lib:close(SocketType, Socket),
-		    ValidateResult
+		    ValidateResult 
 	    end;
 
 	ConnectError ->
@@ -126,6 +127,46 @@ verify_request(SocketType, Host, Port, TranspOpts, Node, RequestStr, Options, Ti
 		      {args,       [SocketType, Host, Port, TranspOpts]}]}) 
     end.
 
+verify_request_N(SocketType, Host, Port, TranspOpts, Node, RequestStr, Options, TimeOut, N) ->
+    State = #state{},
+     try inets_test_lib:connect_bin(SocketType, Host, Port, TranspOpts) of
+	{ok, Socket} ->
+	     request_N(SocketType, Socket, RequestStr, Options, TimeOut, Node, Port, State, N); 
+	ConnectError ->
+	    ct:fail({connect_error, ConnectError, 
+		     [SocketType, Host, Port, TranspOpts]})
+    catch
+	T:E ->
+	    ct:fail({connect_failure, 
+		     [{type,       T}, 
+		      {error,      E}, 
+		      {stacktrace, erlang:get_stacktrace()}, 
+		      {args,       [SocketType, Host, Port, TranspOpts]}]}) 
+    end.
+
+request_N(SocketType, Socket, RequestStr, Options, TimeOut, Node, Port, State, 0) ->
+    ok = inets_test_lib:send(SocketType, Socket, RequestStr),
+    case request(State#state{request = RequestStr, 
+			     socket  = Socket}, TimeOut) of
+	{error, Reason} ->
+	    {error, Reason};	
+	NewState ->
+	    ValidateResult = 
+		validate(RequestStr, NewState, Options, Node, Port),
+	    inets_test_lib:close(SocketType, Socket),
+	    ValidateResult
+    end;
+request_N(SocketType, Socket, RequestStr, Options, TimeOut, Node, Port, State, N) ->
+    ok = inets_test_lib:send(SocketType, Socket, RequestStr),
+    case request(State#state{request = RequestStr, 
+			     socket  = Socket}, TimeOut) of
+	{error, Reason} ->
+	    {error, Reason};
+	_NewState ->
+	    request_N(SocketType, Socket, RequestStr, Options, TimeOut, Node, Port, 
+		      #state{}, N-1)
+    end.
+
 request(#state{mfa = {Module, Function, Args}, 
 	       request = RequestStr, socket = Socket} = State, TimeOut) ->
             
@@ -160,13 +201,35 @@ request(#state{mfa = {Module, Function, Args},
 	{ssl_closed, Socket} ->
 	    exit({test_failed, connection_closed});
 	{ssl_error, Socket, Reason} ->
-	    ct:fail({ssl_error, Reason})
+	    ct:fail({ssl_error, Reason});
+	{Socket, {data, Data}} when is_port(Socket) ->
+	    case Module:Function([list_to_binary(Data) | Args]) of
+		{ok, Parsed} ->
+		    port_handle_http_msg(Parsed, State); 
+		{_, whole_body, _} when HeadRequest =:= "HEAD" ->
+		    State#state{body = <<>>}; 
+		NewMFA ->
+		    request(State#state{mfa = NewMFA}, TimeOut)
+	    end;
+	{Socket, closed}  when Function =:= whole_body -> 
+	    State#state{body = hd(Args)};
+	{Socket, closed} ->
+	    exit({test_failed, connection_closed})
     after TimeOut ->
 	    ct:pal("~p ~w[~w]request -> timeout"
-		   "~n", [self(), ?MODULE, ?LINE]),
+		   "~p~n", [self(), ?MODULE, ?LINE, Args]),
 	    ct:fail(connection_timed_out)    
     end.
 
+
+port_handle_http_msg({Version, StatusCode, ReasonPharse, Headers, Body}, State) ->
+    State#state{status_line = {Version, 
+			       StatusCode,
+			       ReasonPharse},
+		headers = Headers,
+		body = Body}.
+
+
 handle_http_msg({Version, StatusCode, ReasonPharse, Headers, Body}, 
 		State = #state{request = RequestStr}) ->
     case is_expect(RequestStr) of
diff --git a/lib/inets/test/inets.spec b/lib/inets/test/inets.spec
index ed102f8219..6cb3d6526c 100644
--- a/lib/inets/test/inets.spec
+++ b/lib/inets/test/inets.spec
@@ -1 +1,3 @@
-{suites,"../inets_test",all}.
+{suites,"../inets_test", all}.
+{skip_suites, "../inets_test", [httpd_bench_SUITE], 
+    "Benchmarks run separately"}.
diff --git a/lib/inets/test/inets_SUITE.erl b/lib/inets/test/inets_SUITE.erl
index 38b8229389..1abd96a228 100644
--- a/lib/inets/test/inets_SUITE.erl
+++ b/lib/inets/test/inets_SUITE.erl
@@ -213,7 +213,6 @@ start_httpd(Config) when is_list(Config) ->
     true = lists:member(Pid0, Pids0),
     [_|_] = inets:services_info(),	
     inets:stop(httpd, Pid0),
-    ct:sleep(500),
     Pids1 =  [ServicePid || {_, ServicePid} <- inets:services()],
     false = lists:member(Pid0, Pids1),
     {ok, Pid0b} =
@@ -222,7 +221,6 @@ start_httpd(Config) when is_list(Config) ->
     true = lists:member(Pid0b, Pids0b),
     [_|_] = inets:services_info(),
     inets:stop(httpd, Pid0b),
-    ct:sleep(500),
     Pids1 =  [ServicePid || {_, ServicePid} <- inets:services()], 
     false = lists:member(Pid0b, Pids1),
     {ok, Pid1} = 
diff --git a/lib/inets/test/inets_bench.spec b/lib/inets/test/inets_bench.spec
new file mode 100644
index 0000000000..19136e691b
--- /dev/null
+++ b/lib/inets/test/inets_bench.spec
@@ -0,0 +1 @@
+{suites,"../inets_test",[httpd_bench_SUITE]}.
diff --git a/lib/inets/test/inets_test_lib.erl b/lib/inets/test/inets_test_lib.erl
index f1185f7574..2529cc5f9b 100644
--- a/lib/inets/test/inets_test_lib.erl
+++ b/lib/inets/test/inets_test_lib.erl
@@ -463,8 +463,9 @@ connect_bin(essl, Host, Port, Opts0) ->
     connect(ssl, Host, Port, Opts);
 connect_bin(ip_comm, Host, Port, Opts0) ->
     Opts = [binary, {packet, 0} | Opts0],
-    connect(ip_comm, Host, Port, Opts).
-
+    connect(ip_comm, Host, Port, Opts);
+connect_bin(Type, Host, Port, Opts) ->
+    connect(Type, Host, Port, Opts).
 
 connect_byte(SockType, Host, Port) ->
     connect_byte(SockType, Host, Port, []).
@@ -477,27 +478,40 @@ connect_byte(essl, Host, Port, Opts0) ->
     connect(ssl, Host, Port, Opts);
 connect_byte(ip_comm, Host, Port, Opts0) ->
     Opts = [{packet,0} | Opts0],
-    connect(ip_comm, Host, Port, Opts).
+    connect(ip_comm, Host, Port, Opts);
+connect_byte(Type, Host, Port, Opts) ->
+    connect(Type, Host, Port, Opts).
 
 connect(ip_comm, Host, Port, Opts) ->
     gen_tcp:connect(Host, Port, Opts);
 connect(ssl, Host, Port, Opts) ->
-    ssl:connect(Host, Port, Opts).
+    ssl:connect(Host, Port, Opts);
+connect(openssl_port, Host, Port, Opts) ->
+    CaCertFile = proplists:get_value(cacertfile, Opts),
+    Cmd = "openssl s_client -quiet -port " ++ integer_to_list(Port)  ++ " -host " ++ Host 
+	++ " -CAfile " ++ CaCertFile,
+    ct:log("openssl cmd: ~p~n", [Cmd]),
+    OpensslPort =  open_port({spawn, Cmd}, [stderr_to_stdout]),
+    read_junk(OpensslPort),
+    {ok, OpensslPort}.
 
 send(ssl, Socket, Data) ->
     ssl:send(Socket, Data);
 send(essl, Socket, Data) ->
     ssl:send(Socket, Data);
 send(ip_comm,Socket,Data) ->
-    gen_tcp:send(Socket,Data).
-
-
+    gen_tcp:send(Socket,Data);
+send(openssl_port, Port, Data) ->
+    true = port_command(Port, Data),
+    ok.
 close(ssl,Socket) ->
     catch ssl:close(Socket);
 close(essl,Socket) ->
     catch ssl:close(Socket);
 close(ip_comm,Socket) ->
-    catch gen_tcp:close(Socket).
+    catch gen_tcp:close(Socket);
+close(openssl_port, Port) ->
+    exit(Port, normal).
 
 
 hours(N)   -> trunc(N * 1000 * 60 * 60).
@@ -572,3 +586,11 @@ do_inet_port(Node) ->
     {ok, Socket} = rpc:call(Node, gen_tcp, listen, [0, [{reuseaddr, true}]]),
     {ok, Port} = rpc:call(Node, inet, port, [Socket]),
     {Port, Socket}.
+
+read_junk(OpensslPort) ->
+    receive
+	{OpensslPort, _} ->
+	    read_junk(OpensslPort)
+    after 500 -> 
+	    ok    
+    end.
diff --git a/lib/inets/test/make_certs.erl b/lib/inets/test/make_certs.erl
new file mode 100644
index 0000000000..7215a59823
--- /dev/null
+++ b/lib/inets/test/make_certs.erl
@@ -0,0 +1,530 @@
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2007-2015. All Rights Reserved.
+%% 
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%% 
+%% %CopyrightEnd%
+%%
+
+-module(make_certs).
+-compile([export_all]).
+
+%-export([all/1, all/2, rootCA/2, intermediateCA/3, endusers/3, enduser/3, revoke/3, gencrl/2, verify/3]).
+
+-record(config, {commonName, 
+	     organizationalUnitName = "Erlang OTP",
+	     organizationName = "Ericsson AB",
+	     localityName = "Stockholm",
+	     countryName = "SE",
+	     emailAddress = "[email protected]",
+	     default_bits = 2048,
+	     v2_crls = true,
+	     ecc_certs = false,
+	     issuing_distribution_point = false,
+	     crl_port = 8000,
+	     openssl_cmd = "openssl"}).
+
+
+default_config() ->
+    #config{}.
+
+make_config(Args) ->
+    make_config(Args, #config{}).
+
+make_config([], C) ->
+    C;
+make_config([{organizationalUnitName, Name}|T], C) when is_list(Name) ->
+    make_config(T, C#config{organizationalUnitName = Name});
+make_config([{organizationName, Name}|T], C) when is_list(Name) ->
+    make_config(T, C#config{organizationName = Name});
+make_config([{localityName, Name}|T], C) when is_list(Name) ->
+    make_config(T, C#config{localityName = Name});
+make_config([{countryName, Name}|T], C) when is_list(Name) ->
+    make_config(T, C#config{countryName = Name});
+make_config([{emailAddress, Name}|T], C) when is_list(Name) ->
+    make_config(T, C#config{emailAddress = Name});
+make_config([{default_bits, Bits}|T], C) when is_integer(Bits) ->
+    make_config(T, C#config{default_bits = Bits});
+make_config([{v2_crls, Bool}|T], C) when is_boolean(Bool) ->
+    make_config(T, C#config{v2_crls = Bool});
+make_config([{crl_port, Port}|T], C) when is_integer(Port) ->
+    make_config(T, C#config{crl_port = Port});
+make_config([{ecc_certs, Bool}|T], C) when is_boolean(Bool) ->
+    make_config(T, C#config{ecc_certs = Bool});
+make_config([{issuing_distribution_point, Bool}|T], C) when is_boolean(Bool) ->
+    make_config(T, C#config{issuing_distribution_point = Bool});
+make_config([{openssl_cmd, Cmd}|T], C) when is_list(Cmd) ->
+    make_config(T, C#config{openssl_cmd = Cmd}).
+
+
+all([DataDir, PrivDir]) ->
+    all(DataDir, PrivDir).
+
+all(DataDir, PrivDir) ->
+    all(DataDir, PrivDir, #config{}).
+
+all(DataDir, PrivDir, C) when is_list(C) ->
+    all(DataDir, PrivDir, make_config(C));
+all(DataDir, PrivDir, C = #config{}) ->
+    ok = filelib:ensure_dir(filename:join(PrivDir, "erlangCA")),
+    create_rnd(DataDir, PrivDir),			% For all requests
+    rootCA(PrivDir, "erlangCA", C),
+    intermediateCA(PrivDir, "otpCA", "erlangCA", C),
+    endusers(PrivDir, "otpCA", ["client", "server", "revoked", "a.server", "b.server"], C),
+    endusers(PrivDir, "erlangCA", ["localhost"], C),
+    %% Create keycert files 
+    SDir = filename:join([PrivDir, "server"]),
+    SC = filename:join([SDir, "cert.pem"]),
+    SK = filename:join([SDir, "key.pem"]),
+    SKC = filename:join([SDir, "keycert.pem"]),
+    append_files([SK, SC], SKC),
+    CDir = filename:join([PrivDir, "client"]),
+    CC = filename:join([CDir, "cert.pem"]),
+    CK = filename:join([CDir, "key.pem"]),
+    CKC = filename:join([CDir, "keycert.pem"]),
+    append_files([CK, CC], CKC),
+    RDir = filename:join([PrivDir, "revoked"]),
+    RC = filename:join([RDir, "cert.pem"]),
+    RK = filename:join([RDir, "key.pem"]),
+    RKC = filename:join([RDir, "keycert.pem"]),
+    revoke(PrivDir, "otpCA", "revoked", C),
+    append_files([RK, RC], RKC),
+    remove_rnd(PrivDir),
+    {ok, C}.
+
+append_files(FileNames, ResultFileName) ->
+    {ok, ResultFile} = file:open(ResultFileName, [write]),
+    do_append_files(FileNames, ResultFile).
+
+do_append_files([], RF) ->
+    ok = file:close(RF);
+do_append_files([F|Fs], RF) ->
+    {ok, Data} = file:read_file(F),
+    ok = file:write(RF, Data),
+    do_append_files(Fs, RF).
+
+rootCA(Root, Name, C) ->
+    create_ca_dir(Root, Name, ca_cnf(C#config{commonName = Name})),
+    create_self_signed_cert(Root, Name, req_cnf(C#config{commonName = Name}), C),
+    file:copy(filename:join([Root, Name, "cert.pem"]), filename:join([Root, Name, "cacerts.pem"])),
+    gencrl(Root, Name, C).
+
+intermediateCA(Root, CA, ParentCA, C) ->
+    create_ca_dir(Root, CA, ca_cnf(C#config{commonName = CA})),
+    CARoot = filename:join([Root, CA]),
+    CnfFile = filename:join([CARoot, "req.cnf"]),
+    file:write_file(CnfFile, req_cnf(C#config{commonName = CA})),
+    KeyFile = filename:join([CARoot, "private", "key.pem"]), 
+    ReqFile =  filename:join([CARoot, "req.pem"]), 
+    create_req(Root, CnfFile, KeyFile, ReqFile, C),
+    CertFile = filename:join([CARoot, "cert.pem"]),
+    sign_req(Root, ParentCA, "ca_cert", ReqFile, CertFile, C),
+    CACertsFile = filename:join(CARoot, "cacerts.pem"),
+    file:copy(filename:join([Root, ParentCA, "cacerts.pem"]), CACertsFile),
+    %% append this CA's cert to the cacerts file
+    {ok, Bin} = file:read_file(CertFile),
+    {ok, FD} = file:open(CACertsFile, [append]),
+    file:write(FD, ["\n", Bin]),
+    file:close(FD),
+    gencrl(Root, CA, C).
+
+endusers(Root, CA, Users, C) ->
+    [enduser(Root, CA, User, C) || User <- Users].
+
+enduser(Root, CA, User, C) ->
+    UsrRoot = filename:join([Root, User]),
+    file:make_dir(UsrRoot),
+    CnfFile = filename:join([UsrRoot, "req.cnf"]),
+    file:write_file(CnfFile, req_cnf(C#config{commonName = User})),
+    KeyFile = filename:join([UsrRoot, "key.pem"]), 
+    ReqFile =  filename:join([UsrRoot, "req.pem"]), 
+    create_req(Root, CnfFile, KeyFile, ReqFile, C),
+    %create_req(Root, CnfFile, KeyFile, ReqFile),
+    CertFileAllUsage =  filename:join([UsrRoot, "cert.pem"]),
+    sign_req(Root, CA, "user_cert", ReqFile, CertFileAllUsage, C),
+    CertFileDigitalSigOnly =  filename:join([UsrRoot, "digital_signature_only_cert.pem"]),
+    sign_req(Root, CA, "user_cert_digital_signature_only", ReqFile, CertFileDigitalSigOnly, C),
+    CACertsFile = filename:join(UsrRoot, "cacerts.pem"),
+    file:copy(filename:join([Root, CA, "cacerts.pem"]), CACertsFile),
+    ok.
+
+revoke(Root, CA, User, C) ->
+    UsrCert = filename:join([Root, User, "cert.pem"]),
+    CACnfFile = filename:join([Root, CA, "ca.cnf"]),
+    Cmd = [C#config.openssl_cmd, " ca"
+	   " -revoke ", UsrCert,
+	   [" -crl_reason keyCompromise" || C#config.v2_crls ],
+	   " -config ", CACnfFile],
+    Env = [{"ROOTDIR", filename:absname(Root)}], 
+    cmd(Cmd, Env),
+    gencrl(Root, CA, C).
+
+gencrl(Root, CA, C) ->
+    CACnfFile = filename:join([Root, CA, "ca.cnf"]),
+    CACRLFile = filename:join([Root, CA, "crl.pem"]),
+    Cmd = [C#config.openssl_cmd, " ca"
+	   " -gencrl ",
+	   " -crlhours 24",
+	   " -out ", CACRLFile,
+	   " -config ", CACnfFile],
+    Env = [{"ROOTDIR", filename:absname(Root)}], 
+    cmd(Cmd, Env).
+
+verify(Root, CA, User, C) ->
+    CAFile = filename:join([Root, User, "cacerts.pem"]),
+    CACRLFile = filename:join([Root, CA, "crl.pem"]),
+    CertFile = filename:join([Root, User, "cert.pem"]),
+    Cmd = [C#config.openssl_cmd, " verify"
+	   " -CAfile ", CAFile,
+	   " -CRLfile ", CACRLFile, %% this is undocumented, but seems to work
+	   " -crl_check ",
+	   CertFile],
+    Env = [{"ROOTDIR", filename:absname(Root)}],
+    try cmd(Cmd, Env) catch
+	   exit:{eval_cmd, _, _} ->
+		invalid
+    end.
+
+create_self_signed_cert(Root, CAName, Cnf, C = #config{ecc_certs = true}) ->
+    CARoot = filename:join([Root, CAName]),
+    CnfFile = filename:join([CARoot, "req.cnf"]),
+    file:write_file(CnfFile, Cnf),
+    KeyFile = filename:join([CARoot, "private", "key.pem"]), 
+    CertFile = filename:join([CARoot, "cert.pem"]), 
+    Cmd = [C#config.openssl_cmd, " ecparam"
+	   " -out ", KeyFile,
+	   " -name secp521r1 ",
+	   %" -name sect283k1 ",
+	   " -genkey "],
+    Env = [{"ROOTDIR", filename:absname(Root)}], 
+    cmd(Cmd, Env),
+
+    Cmd2 = [C#config.openssl_cmd, " req"
+	   " -new"
+	   " -x509"
+	   " -config ", CnfFile,
+	   " -key ", KeyFile, 
+		 " -outform PEM ",
+	   " -out ", CertFile], 
+    cmd(Cmd2, Env);
+create_self_signed_cert(Root, CAName, Cnf, C) ->
+    CARoot = filename:join([Root, CAName]),
+    CnfFile = filename:join([CARoot, "req.cnf"]),
+    file:write_file(CnfFile, Cnf),
+    KeyFile = filename:join([CARoot, "private", "key.pem"]), 
+    CertFile = filename:join([CARoot, "cert.pem"]), 
+    Cmd = [C#config.openssl_cmd, " req"
+	   " -new"
+	   " -x509"
+	   " -config ", CnfFile,
+	   " -keyout ", KeyFile,
+	   " -outform PEM",
+	   " -out ", CertFile], 
+    Env = [{"ROOTDIR", filename:absname(Root)}],  
+    cmd(Cmd, Env).
+
+
+create_ca_dir(Root, CAName, Cnf) ->
+    CARoot = filename:join([Root, CAName]),
+    ok = filelib:ensure_dir(CARoot),
+    file:make_dir(CARoot),
+    create_dirs(CARoot, ["certs", "crl", "newcerts", "private"]),
+    create_rnd(Root, filename:join([CAName, "private"])),
+    create_files(CARoot, [{"serial", "01\n"},
+			  {"crlnumber", "01"},
+			  {"index.txt", ""},
+			  {"ca.cnf", Cnf}]).
+
+create_req(Root, CnfFile, KeyFile, ReqFile, C = #config{ecc_certs = true}) ->
+    Cmd = [C#config.openssl_cmd, " ecparam"
+	   " -out ", KeyFile,
+	   " -name secp521r1 ",
+	   %" -name sect283k1 ",
+	   " -genkey "],
+    Env = [{"ROOTDIR", filename:absname(Root)}], 
+    cmd(Cmd, Env),
+    Cmd2 = [C#config.openssl_cmd, " req"
+	   " -new ",
+	   " -key ", KeyFile,
+	   " -outform PEM ",
+	   " -out ", ReqFile,
+	   " -config ", CnfFile],
+    cmd(Cmd2, Env);
+    %fix_key_file(KeyFile).
+create_req(Root, CnfFile, KeyFile, ReqFile, C) ->
+    Cmd = [C#config.openssl_cmd, " req"
+	   " -new"
+	   " -config ", CnfFile,
+	   " -outform PEM ",
+	   " -keyout ", KeyFile, 
+	   " -out ", ReqFile], 
+    Env = [{"ROOTDIR", filename:absname(Root)}], 
+    cmd(Cmd, Env).
+    %fix_key_file(KeyFile).
+
+
+sign_req(Root, CA, CertType, ReqFile, CertFile, C) ->
+    CACnfFile = filename:join([Root, CA, "ca.cnf"]),
+    Cmd = [C#config.openssl_cmd, " ca"
+	   " -batch"
+	   " -notext"
+	   " -config ", CACnfFile, 
+	   " -extensions ", CertType,
+	   " -in ", ReqFile, 
+	   " -out ", CertFile],
+    Env = [{"ROOTDIR", filename:absname(Root)}], 
+    cmd(Cmd, Env).
+    
+%%
+%%  Misc
+%%
+    
+create_dirs(Root, Dirs) ->
+    lists:foreach(fun(Dir) ->
+			  file:make_dir(filename:join([Root, Dir])) end,
+		  Dirs).
+
+create_files(Root, NameContents) ->
+    lists:foreach(
+      fun({Name, Contents}) ->
+	      file:write_file(filename:join([Root, Name]), Contents) end,
+      NameContents).
+
+create_rnd(FromDir, ToDir) ->
+     From = filename:join([FromDir, "RAND"]),
+     To = filename:join([ToDir, "RAND"]),
+     file:copy(From, To).
+
+remove_rnd(Dir) ->
+    File = filename:join([Dir, "RAND"]),
+    file:delete(File).
+
+cmd(Cmd, Env) ->
+    FCmd = lists:flatten(Cmd),
+    Port = open_port({spawn, FCmd}, [stream, eof, exit_status, stderr_to_stdout, 
+				    {env, Env}]),
+    eval_cmd(Port, FCmd).
+
+eval_cmd(Port, Cmd) ->
+    receive 
+	{Port, {data, _}} ->
+	    eval_cmd(Port, Cmd);
+	{Port, eof} ->
+	    ok
+    end,
+    receive
+	{Port, {exit_status, 0}}  ->
+	    ok;
+	{Port, {exit_status, Status}} ->
+	    exit({eval_cmd, Cmd, Status})
+    after 0 ->
+	    ok
+    end.
+
+%%
+%% Contents of configuration files 
+%%
+
+req_cnf(C) ->
+    ["# Purpose: Configuration for requests (end users and CAs)."
+     "\n"
+     "ROOTDIR	        = $ENV::ROOTDIR\n"
+     "\n"
+
+     "[req]\n"
+     "input_password	= secret\n"
+     "output_password	= secret\n"
+     "default_bits	= ", integer_to_list(C#config.default_bits), "\n"
+     "RANDFILE		= $ROOTDIR/RAND\n"
+     "encrypt_key	= no\n"
+     "default_md	= md5\n"
+     "#string_mask	= pkix\n"
+     "x509_extensions	= ca_ext\n"
+     "prompt		= no\n"
+     "distinguished_name= name\n"
+     "\n"
+
+     "[name]\n"
+     "commonName		= ", C#config.commonName, "\n"
+     "organizationalUnitName	= ", C#config.organizationalUnitName, "\n"
+     "organizationName	        = ", C#config.organizationName, "\n" 
+     "localityName		= ", C#config.localityName, "\n"
+     "countryName		= ", C#config.countryName, "\n"
+     "emailAddress		= ", C#config.emailAddress, "\n"
+     "\n"
+
+     "[ca_ext]\n"
+     "basicConstraints 	= critical, CA:true\n"
+     "keyUsage 		= cRLSign, keyCertSign\n"
+     "subjectKeyIdentifier = hash\n"
+     "subjectAltName	= email:copy\n"].
+
+ca_cnf(C = #config{issuing_distribution_point = true}) ->
+    ["# Purpose: Configuration for CAs.\n"
+     "\n"
+     "ROOTDIR	        = $ENV::ROOTDIR\n"
+     "default_ca	= ca\n"
+     "\n"
+
+     "[ca]\n"
+     "dir		= $ROOTDIR/", C#config.commonName, "\n"
+     "certs		= $dir/certs\n"
+     "crl_dir	        = $dir/crl\n"
+     "database	        = $dir/index.txt\n"
+     "new_certs_dir	= $dir/newcerts\n"
+     "certificate	= $dir/cert.pem\n"
+     "serial		= $dir/serial\n"
+     "crl		= $dir/crl.pem\n",
+     ["crlnumber		= $dir/crlnumber\n" || C#config.v2_crls],
+     "private_key	= $dir/private/key.pem\n"
+     "RANDFILE	        = $dir/private/RAND\n"
+     "\n"
+     "x509_extensions   = user_cert\n",
+     ["crl_extensions = crl_ext\n" || C#config.v2_crls],
+     "unique_subject  = no\n"
+     "default_days	= 3600\n"
+     "default_md	= md5\n"
+     "preserve	        = no\n"
+     "policy		= policy_match\n"
+     "\n"
+
+     "[policy_match]\n"
+     "commonName		= supplied\n"
+     "organizationalUnitName	= optional\n"
+     "organizationName	        = match\n"
+     "countryName		= match\n"
+     "localityName		= match\n"
+     "emailAddress		= supplied\n"
+     "\n"
+
+     "[crl_ext]\n"
+     "authorityKeyIdentifier=keyid:always,issuer:always\n",
+     ["issuingDistributionPoint=critical, @idpsec\n" || C#config.issuing_distribution_point],
+
+     "[idpsec]\n"
+     "fullname=URI:http://localhost:8000/",C#config.commonName,"/crl.pem\n"
+
+     "[user_cert]\n"
+     "basicConstraints	= CA:false\n"
+     "keyUsage 		= nonRepudiation, digitalSignature, keyEncipherment\n"
+     "subjectKeyIdentifier = hash\n"
+     "authorityKeyIdentifier = keyid,issuer:always\n"
+     "subjectAltName	= email:copy\n"
+     "issuerAltName	= issuer:copy\n"
+     "crlDistributionPoints=@crl_section\n"
+
+     "[crl_section]\n"
+     %% intentionally invalid
+     "URI.1=http://localhost/",C#config.commonName,"/crl.pem\n"
+     "URI.2=http://localhost:",integer_to_list(C#config.crl_port),"/",C#config.commonName,"/crl.pem\n"
+     "\n"
+
+     "[user_cert_digital_signature_only]\n"
+     "basicConstraints	= CA:false\n"
+     "keyUsage 		= digitalSignature\n"
+     "subjectKeyIdentifier = hash\n"
+     "authorityKeyIdentifier = keyid,issuer:always\n"
+     "subjectAltName	= email:copy\n"
+     "issuerAltName	= issuer:copy\n"
+     "\n"
+
+     "[ca_cert]\n"
+     "basicConstraints 	= critical,CA:true\n"
+     "keyUsage 		= cRLSign, keyCertSign\n"
+     "subjectKeyIdentifier = hash\n"
+     "authorityKeyIdentifier = keyid:always,issuer:always\n"
+     "subjectAltName	= email:copy\n"
+     "issuerAltName	= issuer:copy\n"
+     "crlDistributionPoints=@crl_section\n"
+    ];
+
+ca_cnf(C = #config{issuing_distribution_point = false}) ->
+    ["# Purpose: Configuration for CAs.\n"
+     "\n"
+     "ROOTDIR	        = $ENV::ROOTDIR\n"
+     "default_ca	= ca\n"
+     "\n"
+
+     "[ca]\n"
+     "dir		= $ROOTDIR/", C#config.commonName, "\n"
+     "certs		= $dir/certs\n"
+     "crl_dir	        = $dir/crl\n"
+     "database	        = $dir/index.txt\n"
+     "new_certs_dir	= $dir/newcerts\n"
+     "certificate	= $dir/cert.pem\n"
+     "serial		= $dir/serial\n"
+     "crl		= $dir/crl.pem\n",
+     ["crlnumber		= $dir/crlnumber\n" || C#config.v2_crls],
+     "private_key	= $dir/private/key.pem\n"
+     "RANDFILE	        = $dir/private/RAND\n"
+     "\n"
+     "x509_extensions   = user_cert\n",
+     ["crl_extensions = crl_ext\n" || C#config.v2_crls],
+     "unique_subject  = no\n"
+     "default_days	= 3600\n"
+     "default_md	= md5\n"
+     "preserve	        = no\n"
+     "policy		= policy_match\n"
+     "\n"
+
+     "[policy_match]\n"
+     "commonName		= supplied\n"
+     "organizationalUnitName	= optional\n"
+     "organizationName	        = match\n"
+     "countryName		= match\n"
+     "localityName		= match\n"
+     "emailAddress		= supplied\n"
+     "\n"
+
+     "[crl_ext]\n"
+     "authorityKeyIdentifier=keyid:always,issuer:always\n",
+     %["issuingDistributionPoint=critical, @idpsec\n" || C#config.issuing_distribution_point],
+
+     %"[idpsec]\n"
+     %"fullname=URI:http://localhost:8000/",C#config.commonName,"/crl.pem\n"
+
+     "[user_cert]\n"
+     "basicConstraints	= CA:false\n"
+     "keyUsage 		= nonRepudiation, digitalSignature, keyEncipherment\n"
+     "subjectKeyIdentifier = hash\n"
+     "authorityKeyIdentifier = keyid,issuer:always\n"
+     "subjectAltName	= email:copy\n"
+     "issuerAltName	= issuer:copy\n"
+     %"crlDistributionPoints=@crl_section\n"
+
+     %%"[crl_section]\n"
+     %% intentionally invalid
+     %%"URI.1=http://localhost/",C#config.commonName,"/crl.pem\n"
+     %%"URI.2=http://localhost:",integer_to_list(C#config.crl_port),"/",C#config.commonName,"/crl.pem\n"
+     %%"\n"
+
+     "[user_cert_digital_signature_only]\n"
+     "basicConstraints	= CA:false\n"
+     "keyUsage 		= digitalSignature\n"
+     "subjectKeyIdentifier = hash\n"
+     "authorityKeyIdentifier = keyid,issuer:always\n"
+     "subjectAltName	= email:copy\n"
+     "issuerAltName	= issuer:copy\n"
+     "\n"
+
+     "[ca_cert]\n"
+     "basicConstraints 	= critical,CA:true\n"
+     "keyUsage 		= cRLSign, keyCertSign\n"
+     "subjectKeyIdentifier = hash\n"
+     "authorityKeyIdentifier = keyid:always,issuer:always\n"
+     "subjectAltName	= email:copy\n"
+     "issuerAltName	= issuer:copy\n"
+     %"crlDistributionPoints=@crl_section\n"
+    ].
diff --git a/lib/inets/vsn.mk b/lib/inets/vsn.mk
index 34b6902747..05cf4f6cc3 100644
--- a/lib/inets/vsn.mk
+++ b/lib/inets/vsn.mk
@@ -19,6 +19,6 @@
 # %CopyrightEnd%
 
 APPLICATION = inets
-INETS_VSN   = 6.4.2
+INETS_VSN   = 6.4.5
 PRE_VSN     =
 APP_VSN     = "$(APPLICATION)-$(INETS_VSN)$(PRE_VSN)"
diff --git a/lib/jinterface/doc/src/Makefile b/lib/jinterface/doc/src/Makefile
index 508c8e01b5..37de0a35c5 100644
--- a/lib/jinterface/doc/src/Makefile
+++ b/lib/jinterface/doc/src/Makefile
@@ -3,7 +3,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 2000-2016. All Rights Reserved.
+# Copyright Ericsson AB 2000-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -43,25 +43,17 @@ XML_APP_FILES = ref_man.xml
 XML_REF3_FILES = jinterface.xml
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml \
-	part_notes_history.xml
-
+	part.xml
 XML_CHAPTER_FILES = \
 	notes.xml \
-	notes_history.xml \
 	jinterface_users_guide.xml
 
 BOOK_FILES = book.xml
 
-XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
-
-GIF_FILES = \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif
+XML_FILES = $(BOOK_FILES) $(XML_APP_FILES) $(XML_REF3_FILES) \
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
+GIF_FILES =
 #------------------------------------------------------
 
 
@@ -92,7 +84,7 @@ JAVA_DOC_FILES = \
 	serialized-form.html \
 	package-list \
 	stylesheet.css \
-	help-doc.html 
+	help-doc.html
 
 INFO_FILE = ../../info
 JAVA_EXTRA_FILES = $(JAVA_DOC_FILES:%=$(HTMLDIR)/java/%)
@@ -110,17 +102,16 @@ JAVA_GEN_FILES = \
 HTML_FILES = \
 	$(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html)
 
-TOP_HTML_FILES = $(INDEX_TARGET) 
+TOP_HTML_FILES = $(INDEX_TARGET)
 
 INDEX_FILE = index.html
-INDEX_SRC = $(INDEX_FILE).src
 INDEX_TARGET = $(DOCDIR)/$(INDEX_FILE)
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -146,18 +137,15 @@ jdoc:$(JAVA_SRC_FILES)
 	(cd ../../java_src;$(JAVADOC) -sourcepath . -d $(JAVADOC_DEST) \
 		-windowtitle $(JAVADOC_TITLE) $(JAVADOC_PKGS))
 
-man: 
+man:
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-#$(INDEX_TARGET): $(INDEX_SRC) ../../vsn.mk
-#	sed -e 's;%VSN%;$(VSN);' $< > $@
-
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/jinterface/doc/src/fascicules.xml b/lib/jinterface/doc/src/fascicules.xml
deleted file mode 100644
index 4f04be0515..0000000000
--- a/lib/jinterface/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="yes">
-    User Guide
-  </fascicule>
-  <fascicule file="" href="java/index.html" entry="no">
-    Java API
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/jinterface/doc/src/index.html.src b/lib/jinterface/doc/src/index.html.src
deleted file mode 100644
index 9276c5f89a..0000000000
--- a/lib/jinterface/doc/src/index.html.src
+++ /dev/null
@@ -1,99 +0,0 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<!-- This file is obsolete -->
-<HTML>
-<!-- 
-    %CopyrightBegin%
-    
-    Copyright Ericsson AB 2000-2016. All Rights Reserved.
-    
-    Licensed under the Apache License, Version 2.0 (the "License");
-    you may not use this file except in compliance with the License.
-    You may obtain a copy of the License at
- 
-        http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
-    
-    %CopyrightEnd%
--->
-<HEAD>
-<TITLE>Jinterface %VSN%</TITLE>
-</HEAD>
-
-<BODY BGCOLOR="#FFFFFF">
-
-<CENTER>
-<A HREF="http://www.erlang.se/"><IMG  ALT="Erlang/OTP" BORDER=0 SRC="html/min_head.gif"></A><BR>
-
-<FONT SIZE="-1">
-[<A HREF="../../../doc/index.html">Up</A> |
-<A HREF="http://www.erlang.se/">Erlang/OTP</A>]
-</FONT><BR>
-
-<P><FONT SIZE="+3">Jinterface </FONT><BR>
-Version %VSN%
-</CENTER>
-
-<P><TABLE>
-<TR>
-<TD>
-</TD>
-
-<TD>
-<STRONG>Jinterface</STRONG> contains functions, 
-which help you integrate programs written in Java and Erlang.
-</TD>
-</TR>
-</TABLE>
-
-<P><CENTER>
-<TABLE CELLPADDING=15>
-<TR>
-
-
-<TD ALIGN=CENTER>
-<A HREF="html/part_frame.html">
-<IMG ALT="User Guide" BORDER=0 SRC="html/user_guide.gif"></A><BR>
-<FONT SIZE="-1">
-<A HREF="html/part_frame.html">User Guide</A>
-</FONT>
-</TD>
-
-
-<TD ALIGN=CENTER>
-<A HREF="html/index.html"><IMG ALT="Java API" BORDER=0 SRC="html/ref_man.gif"></A><BR>
-<FONT SIZE="-1">
-<A HREF="html/index.html">Java API</A>
-</FONT>
-</TD>
-
-
-
-<TD ALIGN=CENTER>
-<A HREF="html/part_notes_frame.html"><IMG ALT="Release Notes" BORDER=0 SRC="html/notes.gif"></A><BR>
-<FONT SIZE="-1">
-<A HREF="html/part_notes_frame.html">Release Notes</A>
-</FONT>
-</TD>
-
-</TR>
-</TABLE>
-</CENTER>
-
-<P><CENTER>
-<HR>
-<FONT SIZE="-1">
-Copyright &copy; 1991-2001
-<A HREF="http://www.erlang.se/">Ericsson Utvecklings AB</A>
-</FONT>
-</CENTER>
-</BODY>
-</HTML>
-
-
-
-
diff --git a/lib/jinterface/doc/src/notes.gif b/lib/jinterface/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/jinterface/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/jinterface/doc/src/notes.xml b/lib/jinterface/doc/src/notes.xml
index b44a04d7cd..346d467c2d 100644
--- a/lib/jinterface/doc/src/notes.xml
+++ b/lib/jinterface/doc/src/notes.xml
@@ -31,6 +31,21 @@
   </header>
   <p>This document describes the changes made to the Jinterface application.</p>
 
+<section><title>Jinterface 1.8.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Jinterface 1.8</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/jinterface/doc/src/part_notes.xml b/lib/jinterface/doc/src/part_notes.xml
deleted file mode 100644
index de6dd7d162..0000000000
--- a/lib/jinterface/doc/src/part_notes.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2000</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Jinterface Release Notes</title>
-    <prepared>Gordon Beaton</prepared>
-    <docno></docno>
-    <date>1999-10-25</date>
-    <rev>A</rev>
-  </header>
-  <description>
-    <p>The <em>Jinterface</em> application is a Java-Erlang
-      communication tool package.</p>
-    <p>For information about older versions, see 
-      <url href="part_notes_history_frame.html">Release Notes History</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/jinterface/doc/src/part_notes_history.xml b/lib/jinterface/doc/src/part_notes_history.xml
deleted file mode 100644
index 94bb996db5..0000000000
--- a/lib/jinterface/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2006</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Jinterface Release Notes History</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The <em>Jinterface</em> application is a Java-Erlang
-      communication tool package.</p>
-  </description>
-  <include file="notes_history"></include>
-</part>
-
diff --git a/lib/jinterface/doc/src/ref_man.gif b/lib/jinterface/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/jinterface/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/jinterface/doc/src/summary.html.src b/lib/jinterface/doc/src/summary.html.src
deleted file mode 100644
index beb3305d58..0000000000
--- a/lib/jinterface/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-Low level interface to Java. 
\ No newline at end of file
diff --git a/lib/jinterface/doc/src/user_guide.gif b/lib/jinterface/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/jinterface/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/Makefile b/lib/jinterface/java_src/com/ericsson/otp/erlang/Makefile
index e55cfa62ea..001acfdd2e 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/Makefile
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/Makefile
@@ -130,7 +130,6 @@ release_spec: opt
 
 release_docs_spec:
 
-
-
+xmllint:
 
 # ----------------------------------------------------
diff --git a/lib/jinterface/test/jinterface_SUITE.erl b/lib/jinterface/test/jinterface_SUITE.erl
index 73851f47e0..8c6a6368a9 100644
--- a/lib/jinterface/test/jinterface_SUITE.erl
+++ b/lib/jinterface/test/jinterface_SUITE.erl
@@ -176,11 +176,29 @@ init_per_suite(Config) when is_list(Config) ->
 	     {error,bad_name} -> false;
 	     P -> filelib:is_dir(P) end of
 	true ->
-	    jitu:init_all(Config);
+            case hostname_resolves() of
+                true ->
+                    jitu:init_all(Config);
+                Skip ->
+                    Skip
+            end;
 	false ->
 	    {skip,"No jinterface application"}
     end.
 
+%% Check if inet:gethostname() can be resolved by
+%% the native resolver. If it can, we know that
+%% jinterface name resolution works. If it cannot
+%% jinterface tests will fail.
+hostname_resolves() ->
+    {ok, HN} = inet:gethostname(),
+    case inet_gethost_native:gethostbyname(HN) of
+        {ok, _} ->
+            true;
+        _ ->
+            {skip, "Cannot resolve short hostname, add " ++ HN ++ " to /etc/hosts"}
+    end.
+
 end_per_suite(Config) when is_list(Config) ->
     jitu:finish_all(Config).
 
diff --git a/lib/jinterface/test/nc_SUITE.erl b/lib/jinterface/test/nc_SUITE.erl
index 81944f71d4..daa17195ee 100644
--- a/lib/jinterface/test/nc_SUITE.erl
+++ b/lib/jinterface/test/nc_SUITE.erl
@@ -651,11 +651,10 @@ do_echo(DataList, Config, OutTrans, InTrans, ExtraArgs)
 echo_loop([D|Ds], Echoer, OutTrans, InTrans, TermAcc) ->
     OutMsg = OutTrans(D),
     Echoer ! OutMsg,
-    io:format("echo_server ~p: ~p ! ~P~n", [self(),Echoer,OutMsg,10]),
+    %%io:format("echo_server ~p: ~p ! ~P~n", [self(),Echoer,OutMsg,10]),
     receive
 	Reply ->
-	    io:format("echo_server ~p: receive ~P~n",
-		      [self(),Reply,10]),
+	    %%io:format("echo_server ~p: receive ~P~n", [self(),Reply,10]),
 	    InTrans(Echoer, D, Reply)
     end,
     Term = case OutMsg of
@@ -670,11 +669,10 @@ echo_loop(Cont, Echoer, OutTrans, InTrans, TermAcc)
   when is_function(Cont, 0) ->
     check_terms(Echoer, TermAcc),
     OutMsg = Echoer ! {self(),undefined,hash_clear},
-    io:format("echo_server ~p: ~p ! ~P~n", [self(),Echoer,OutMsg,10]),
+    %%io:format("echo_server ~p: ~p ! ~P~n", [self(),Echoer,OutMsg,10]),
     receive
 	{Echoer,hash_cleared,hash_clear}=Reply ->
-	    io:format("echo_server ~p: receive ~P~n",
-		      [self(),Reply,10]),
+	    %%io:format("echo_server ~p: receive ~P~n", [self(),Reply,10]),
 	    ok;
 	Other ->
 	    io:format("echo_server_terms unexpected ~p: receive ~P~n",
@@ -686,11 +684,10 @@ echo_loop(Cont, Echoer, OutTrans, InTrans, TermAcc)
 check_terms(Echoer, [Term | Rest]) ->
     OutMsg = {self(),Term,hash_lookup},
     Echoer ! OutMsg,
-    io:format("check_terms ~p: ~p ! ~P~n", [self(),Echoer,OutMsg,10]),
+    %%io:format("check_terms ~p: ~p ! ~P~n", [self(),Echoer,OutMsg,10]),
     receive
 	{Echoer,true,hash_lookup} = ReplyMsg ->
-	    io:format("check_terms ~p: receive ~P~n",
-		      [self(),ReplyMsg,10]),
+	    %%io:format("check_terms ~p: receive ~P~n", [self(),ReplyMsg,10]),
 	    check_terms(Echoer, Rest);
 	Other ->
 	    io:format("check_terms unexpected ~p: receive ~P~n",
diff --git a/lib/jinterface/vsn.mk b/lib/jinterface/vsn.mk
index 373e2dab22..0a8a1190ec 100644
--- a/lib/jinterface/vsn.mk
+++ b/lib/jinterface/vsn.mk
@@ -1 +1 @@
-JINTERFACE_VSN = 1.8
+JINTERFACE_VSN = 1.8.1
diff --git a/lib/kernel/doc/src/Makefile b/lib/kernel/doc/src/Makefile
index 8976a3b800..0759f362d4 100644
--- a/lib/kernel/doc/src/Makefile
+++ b/lib/kernel/doc/src/Makefile
@@ -70,8 +70,8 @@ XML_REF4_FILES = app.xml config.xml
 
 XML_REF6_FILES = kernel_app.xml
 
-XML_PART_FILES = part_notes.xml part_notes_history.xml
-XML_CHAPTER_FILES = notes.xml notes_history.xml
+XML_PART_FILES =
+XML_CHAPTER_FILES = notes.xml
 
 BOOK_FILES = book.xml
 
@@ -100,9 +100,9 @@ SPECS_FILES = $(XML_REF3_FILES:%.xml=$(SPECDIR)/specs_%.xml)
 TOP_SPECS_FILE = specs.xml
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 SPECS_ESRC = ../../src
 
@@ -125,7 +125,7 @@ html: gifs $(HTML_REF_MAN_FILE)
 man: $(MAN3_FILES) $(MAN4_FILES) $(MAN6_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
@@ -134,7 +134,7 @@ clean clean_docs:
 	rm -f $(MAN6DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
 	rm -f $(SPECDIR)/*
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 $(SPECDIR)/specs_erl_prim_loader_stub.xml:
 	escript $(SPECS_EXTRACTOR) $(SPECS_FLAGS) \
@@ -151,7 +151,7 @@ $(SPECDIR)/specs_zlib_stub.xml:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -169,4 +169,3 @@ release_docs_spec: docs
 	$(INSTALL_DATA) $(MAN6_FILES) "$(RELEASE_PATH)/man/man6"
 
 release_spec:
-
diff --git a/lib/kernel/doc/src/fascicules.xml b/lib/kernel/doc/src/fascicules.xml
deleted file mode 100644
index fadd37eefb..0000000000
--- a/lib/kernel/doc/src/fascicules.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/kernel/doc/src/file.xml b/lib/kernel/doc/src/file.xml
index 593bee74fe..58abb35428 100644
--- a/lib/kernel/doc/src/file.xml
+++ b/lib/kernel/doc/src/file.xml
@@ -33,15 +33,18 @@
   <description>
     <p>This module provides an interface to the file system.</p>
 
-    <p>On operating systems with thread support,
-      file operations can be performed in threads of their own, allowing
-      other Erlang processes to continue executing in parallel with
-      the file operations. See command-line flag
-      <c>+A</c> in <seealso marker="erts:erl"><c>erl(1)</c></seealso>.</p>
+    <warning>
+       <p>File operations are only guaranteed to appear atomic when going
+          through the same file server. A NIF or other OS process may observe
+          intermediate steps on certain operations on some operating systems,
+          eg. renaming an existing file on Windows, or
+          <seealso marker="#write_file_info/2"><c>write_file_info/2</c>
+          </seealso> on any OS at the time of writing.</p>
+    </warning>
 
     <p>Regarding filename encoding, the Erlang VM can operate in
     two modes. The current mode can be queried using function
-    <seealso marker="#native_name_encoding"><c>native_name_encoding/0</c></seealso>.
+    <seealso marker="#native_name_encoding/0"><c>native_name_encoding/0</c></seealso>.
     It returns <c>latin1</c> or <c>utf8</c>.</p>
 
     <p>In <c>latin1</c> mode, the Erlang VM does not change the
@@ -84,8 +87,9 @@
     <note><p>
       File operations used to accept filenames containing
       null characters (integer value zero). This caused
-      the name to be truncated at the first null character.
-      Filenames containing null characters inside the filename
+      the name to be truncated and in some cases arguments
+      to primitive operations to be mixed up. Filenames
+      containing null characters inside the filename
       are now <em>rejected</em> and will cause primitive
       file operations fail.
     </p></note>
@@ -1437,8 +1441,12 @@ f.txt:  {person, "kalle", 25}.
 	    which is 1970-01-01 00:00 UTC.</p></item>
 	  </taglist>
 	<p>Default is <c>{time, local}</c>.</p>
-        <p>If the option <c>raw</c> is set, the file server is not called
-          and only information about local files is returned.</p>
+        <p>If the option <c>raw</c> is set, the file server is not called and
+           only information about local files is returned. Note that this will
+           break this module's atomicity guarantees as it can race with a
+           concurrent call to
+           <seealso marker="#write_file_info/2"><c>write_file_info/1,2</c>
+           </seealso></p>
 	  <note>
           <p>As file times are stored in POSIX time on most OS, it is faster to
 	  query file information with option <c>posix</c>.</p>
@@ -1686,8 +1694,12 @@ f.txt:  {person, "kalle", 25}.
 	except that if <c><anno>Name</anno></c> is a symbolic link, information
 	about the link is returned in the <c>file_info</c> record and
           the <c>type</c> field of the record is set to <c>symlink</c>.</p>
-      <p>If the option <c>raw</c> is set, the file server is not called
-        and only information about local files is returned.</p>
+        <p>If the option <c>raw</c> is set, the file server is not called and
+           only information about local files is returned. Note that this will
+           break this module's atomicity guarantees as it can race with a
+           concurrent call to
+           <seealso marker="#write_file_info/2"><c>write_file_info/1,2</c>
+           </seealso></p>
         <p>If <c><anno>Name</anno></c> is not a symbolic link, this function returns
           the same result as <c>read_file_info/1</c>.
           On platforms that do not support symbolic links, this function
@@ -1825,24 +1837,16 @@ f.txt:  {person, "kalle", 25}.
 	<p>The file used must be opened using the <c>raw</c> flag, and the process
 	calling <c>sendfile</c> must be the controlling process of the socket.
 	See <seealso marker="gen_tcp#controlling_process-2"><c>gen_tcp:controlling_process/2</c></seealso>.</p>
-	<p>If the OS used does not support <c>sendfile</c>, an Erlang fallback
-	using
-	<seealso marker="#read/2"><c>read/2</c></seealso> and
-	<seealso marker="gen_tcp#send/2"><c>gen_tcp:send/2</c></seealso> is used.</p>
+	<p>If the OS used does not support non-blocking <c>sendfile</c>, an
+	Erlang fallback using <seealso marker="#read/2"><c>read/2</c></seealso>
+	and <seealso marker="gen_tcp#send/2"><c>gen_tcp:send/2</c></seealso> is
+        used.</p>
 	<p>The option list can contain the following options:</p>
 	<taglist>
           <tag><c>chunk_size</c></tag>
           <item><p>The chunk size used by the Erlang fallback to send
 	  data. If using the fallback, set this to a value
 	  that comfortably fits in the systems memory. Default is 20 MB.</p></item>
-	  <tag><c>use_threads</c></tag>
-          <item><p>Instructs the emulator to use the <c>async</c> thread pool for the
-	  <c>sendfile</c> system call. This can be useful if the OS you are running
-	  on does not properly support non-blocking <c>sendfile</c> calls. Notice that
-	  using <c>async</c> threads potentially makes your system vulnerable to slow
-	  client attacks. If set to <c>true</c> and no <c>async</c> threads are available,
-	  the <c>sendfile</c> call returns <c>{error,einval}</c>.
-	  Introduced in Erlang/OTP 17.0. Default is <c>false</c>.</p></item>
 	</taglist>
       </desc>
     </func>
@@ -1855,7 +1859,7 @@ f.txt:  {person, "kalle", 25}.
         <p>The functions in the module <c>file</c> usually treat binaries
           as raw filenames, that is, they are passed "as is" even when the
 	  encoding of the binary does not agree with
-	  <seealso marker="#native_name_encoding"><c>native_name_encoding()</c></seealso>.
+	  <seealso marker="#native_name_encoding/0"><c>native_name_encoding()</c></seealso>.
           However, this function expects binaries to be encoded according to the
           value returned by <c>native_name_encoding()</c>.</p>
         <p>Typical error reasons are:</p>
@@ -2147,144 +2151,77 @@ f.txt:  {person, "kalle", 25}.
 
   <section>
     <title>Performance</title>
-    <p>Some operating system file operations, for example, a
-      <c>sync/1</c> or <c>close/1</c> on a huge file, can block their
-      calling thread for seconds. If this affects the emulator main
-      thread, the response time is no longer in the order of
-      milliseconds, depending on the definition of "soft" in soft
-      real-time system.</p>
-    <p>If the device driver thread pool is active, file operations are
-      done through those threads instead, so the emulator can go on
-      executing Erlang processes. Unfortunately, the time for serving a
-      file operation increases because of the extra scheduling required
-      from the operating system.</p>
-    <p>If the device driver thread pool is disabled or of size 0, large
-      file reads and writes are segmented into many smaller, which
-      enable the emulator to serve other processes during the file
-      operation. This has the same effect as when using the thread
-      pool, but with larger overhead. Other file operations, for
-      example, <c>sync/1</c> or <c>close/1</c> on a huge file, still are
-      a problem.</p>
-    <p>For increased performance, raw files are recommended. Raw files
-      use the file system of the host machine of the node.</p>
+    <p>For increased performance, raw files are recommended.</p>
+    <p>A normal file is really a process so it can be used as an I/O
+       device (see <seealso marker="stdlib:io"><c>io</c></seealso>).
+       Therefore, when data is written to a normal file, the sending of the
+       data to the file process, copies all data that are not binaries. Opening
+       the file in binary mode and writing binaries is therefore recommended.
+       If the file is opened on another node, or if the file server runs as
+       slave to the file server of another node, also binaries are copied.</p>
     <note>
-      <p>
-	For normal files (non-raw), the file server is used to find the files,
-	and if the node is running its file server as slave to the file server
-	of another node, and the other node runs on some other host machine,
-	they can have different file systems.
-        However, this is seldom a problem.</p>
+      <p>Raw files use the file system of the host machine of the node.
+         For normal files (non-raw), the file server is used to find the files,
+         and if the node is running its file server as slave to the file server
+         of another node, and the other node runs on some other host machine,
+         they can have different file systems.
+         However, this is seldom a problem.</p>
     </note>
-    <p>A normal file is really a process so it can be used as an I/O
-      device (see
-      <seealso marker="stdlib:io"><c>io</c></seealso>).
-      Therefore, when data is written to a
-      normal file, the sending of the data to the file process, copies 
-      all data that are not binaries. Opening the file in binary mode
-      and writing binaries is therefore recommended. If the file is
-      opened on another node, or if the file server runs as slave to
-      the file server of another node, also binaries are copied.</p>
-    <p>Caching data to reduce the number of file operations, or rather
-      the number of calls to the file driver, generally increases
-      performance. The following function writes 4 MBytes in 23
-      seconds when tested:</p>
+    <p><seealso marker="#open/2"><c>open/2</c></seealso> can be given the
+       options <c>delayed_write</c> and <c>read_ahead</c> to turn on caching,
+       which will reduce the number of operating system calls and greatly
+       improve performance for small reads and writes. However, the overhead
+       won't disappear completely and it's best to keep the number of file
+       operations to a minimum. As a contrived example, the following function
+       writes 4MB in 2.5 seconds when tested:</p>
+
     <code type="none"><![CDATA[
-create_file_slow(Name, N) when integer(N), N >= 0 ->
-    {ok, FD} = file:open(Name, [raw, write, delayed_write, binary]),
-    ok = create_file_slow(FD, 0, N),
-    ok = ?FILE_MODULE:close(FD),
-    ok.
-      
-create_file_slow(FD, M, M) ->
+create_file_slow(Name) ->
+    {ok, Fd} = file:open(Name, [raw, write, delayed_write, binary]),
+    create_file_slow_1(Fd, 4 bsl 20),
+    file:close(Fd).
+
+create_file_slow_1(_Fd, 0) ->
     ok;
-create_file_slow(FD, M, N) ->
-    ok = file:write(FD, <<M:32/unsigned>>),
-    create_file_slow(FD, M+1, N).]]></code>
+create_file_slow_1(Fd, M) ->
+    ok = file:write(Fd, <<0>>),
+    create_file_slow_1(Fd, M - 1).]]></code>
+
+    <p>The following functionally equivalent code writes 128 bytes per call
+       to <seealso marker="#write/2"><c>write/2</c></seealso> and so does the
+       same work in 0.08 seconds, which is roughly 30 times faster:</p>
 
-    <p>The following, functionally equivalent, function collects 1024
-      entries into a list of 128 32-byte binaries before each call to
-      <seealso marker="#write/2"><c>write/2</c></seealso> and so
-      does the same work in 0.52 seconds,
-      which is 44 times faster:</p>
     <code type="none"><![CDATA[
-create_file(Name, N) when integer(N), N >= 0 ->
-    {ok, FD} = file:open(Name, [raw, write, delayed_write, binary]),
-    ok = create_file(FD, 0, N),
-    ok = ?FILE_MODULE:close(FD),
+create_file(Name) ->
+    {ok, Fd} = file:open(Name, [raw, write, delayed_write, binary]),
+    create_file_1(Fd, 4 bsl 20),
+    file:close(Fd),
     ok.
-      
-create_file(FD, M, M) ->
+
+create_file_1(_Fd, 0) ->
     ok;
-create_file(FD, M, N) when M + 1024 =&lt; N ->
-    create_file(FD, M, M + 1024, []),
-    create_file(FD, M + 1024, N);
-create_file(FD, M, N) ->
-    create_file(FD, M, N, []).
-      
-create_file(FD, M, M, R) ->
-    ok = file:write(FD, R);
-create_file(FD, M, N0, R) when M + 8 =&lt; N0 ->
-    N1  = N0-1,  N2  = N0-2,  N3  = N0-3,  N4  = N0-4, 
-    N5  = N0-5,  N6  = N0-6,  N7  = N0-7,  N8  = N0-8, 
-    create_file(FD, M, N8, 
-                [<<N8:32/unsigned,  N7:32/unsigned, 
-                   N6:32/unsigned,  N5:32/unsigned, 
-                   N4:32/unsigned,  N3:32/unsigned, 
-                   N2:32/unsigned,  N1:32/unsigned>> | R]);
-create_file(FD, M, N0, R) ->
-    N1 = N0-1,
-    create_file(FD, M, N1, [<<N1:32/unsigned>> | R]).]]></code>
+create_file_1(Fd, M) when M >= 128 ->
+    ok = file:write(Fd, <<0:(128)/unit:8>>),
+    create_file_1(Fd, M - 128);
+create_file_1(Fd, M) ->
+    ok = file:write(Fd, <<0:(M)/unit:8>>),
+    create_file_1(Fd, M - 1).]]></code>
 
-    <note>
-      <p>Trust only your own benchmarks. If the list length in 
-        <c>create_file/2</c> above is increased, it runs slightly
-        faster, but consumes more memory and causes more memory
-        fragmentation. How much this affects your application is
-        something that this simple benchmark cannot predict.</p>
-      <p>If the size of each binary is increased to 64 bytes, it
-        also runs slightly faster, but the code is then twice as clumsy.
-        In the current implementation, binaries larger than 64 bytes are
-        stored in memory common to all processes and not copied when
-        sent between processes, while these smaller binaries are stored
-        on the process heap and copied when sent like any other term.</p>
-      <p>So, with a binary size of 68 bytes, <c>create_file/2</c> runs
-        30 percent slower than with 64 bytes, and causes much more
-        memory fragmentation. Notice that if the binaries were to be sent
-        between processes (for example, a non-raw file), the results
-        would probably be completely different.</p>
-    </note>
-    <p>A raw file is really a port. When writing data to a port, it is
-      efficient to write a list of binaries. It is not needed to
-      flatten a deep list before writing. On Unix hosts, scatter output,
-      which writes a set of buffers in one operation, is used when
-      possible. In this way <c>write(FD, [Bin1, Bin2 | Bin3])</c>
-      writes the contents of the binaries without copying the data
-      at all, except for perhaps deep down in the operating system
-      kernel.</p>
-    <p>For raw files, <c>pwrite/2</c> and <c>pread/2</c> are
-      efficiently implemented. The file driver is called only once for
-      the whole operation, and the list iteration is done in the file
-      driver.</p>
-    <p>The options <c>delayed_write</c> and <c>read_ahead</c> to 
-      <seealso marker="#open/2"><c>open/2</c></seealso>
-      make the file driver cache data to reduce
-      the number of operating system calls. The function
-      <c>create_file/2</c> in the recent example takes 60 seconds
-      without option <c>delayed_write</c>, which is 2.6
-      times slower.</p>
-    <p>As a bad example, <c>create_file_slow/2</c>
-      without options <c>raw</c>, <c>binary</c>, and <c>delayed_write</c>,
-      meaning it calls <c>open(Name, [write])</c>, needs
-      1 min 20 seconds for the job, which is 3.5 times slower than
-      the first example, and 150 times slower than the optimized
-      <c>create_file/2</c>.</p>
-      <warning>
-	<p>If an error occurs when accessing an open file with module
-      <seealso marker="stdlib:io"><c>io</c></seealso>,
-      the process handling the file exits. The dead
-      file process can hang if a process tries to access it later.
-      This will be fixed in a future release.</p>
-      </warning>
+    <p>When writing data it's generally more efficient to write a list of
+       binaries rather than a list of integers. It is not needed to
+       flatten a deep list before writing. On Unix hosts, scatter output,
+       which writes a set of buffers in one operation, is used when
+       possible. In this way <c>write(FD, [Bin1, Bin2 | Bin3])</c>
+       writes the contents of the binaries without copying the data
+       at all, except for perhaps deep down in the operating system
+       kernel.</p>
+    <warning>
+        <p>If an error occurs when accessing an open file with module
+           <seealso marker="stdlib:io"><c>io</c></seealso>, the process
+           handling the file exits. The dead file process can hang if a process
+           tries to access it later. This will be fixed in a future release.
+           </p>
+    </warning>
   </section>
 
   <section>
diff --git a/lib/kernel/doc/src/gen_tcp.xml b/lib/kernel/doc/src/gen_tcp.xml
index 070782e1f3..e6104b0c76 100644
--- a/lib/kernel/doc/src/gen_tcp.xml
+++ b/lib/kernel/doc/src/gen_tcp.xml
@@ -51,6 +51,7 @@ server() ->
     {ok, Sock} = gen_tcp:accept(LSock),
     {ok, Bin} = do_recv(Sock, []),
     ok = gen_tcp:close(Sock),
+    ok = gen_tcp:close(LSock),
     Bin.
 
 do_recv(Sock, Bs) ->
@@ -309,9 +310,9 @@ do_recv(Sock, Bs) ->
             <seealso marker="inet#setopts/2"><c>inet:setopts/2</c></seealso>.
             </p></item>
         </taglist>
-        <p>The returned socket <c><anno>ListenSocket</anno></c> can only be
-          used in calls to
-          <seealso marker="#accept/1"><c>accept/1,2</c></seealso>.</p>
+        <p>The returned socket <c><anno>ListenSocket</anno></c> should be used
+          in calls to <seealso marker="#accept/1"><c>accept/1,2</c></seealso> to
+          accept incoming connection requests.</p>
         <note>
           <p>The default values for options specified to <c>listen</c> can
             be affected by the Kernel configuration parameter
diff --git a/lib/kernel/doc/src/net_kernel.xml b/lib/kernel/doc/src/net_kernel.xml
index 0b94fc0fa6..94c8fb9e20 100644
--- a/lib/kernel/doc/src/net_kernel.xml
+++ b/lib/kernel/doc/src/net_kernel.xml
@@ -230,7 +230,12 @@ $ <input>erl -sname foobar</input></pre>
           <item>
             <p>The tuple <c>{nodedown_reason, Reason}</c> is included in
               <c>InfoList</c> in <c>nodedown</c> messages.</p>
-            <p><c>Reason</c> can be any of the following:</p>
+            <p>
+	      <c>Reason</c> can, depending on which
+	      distribution module or process that is used be any term,
+	      but for the standard TCP distribution module it is
+	      any of the following:
+	    </p>
             <taglist>
               <tag><c>connection_setup_failed</c></tag>
               <item><p>The connection setup failed (after <c>nodeup</c>
diff --git a/lib/kernel/doc/src/notes.xml b/lib/kernel/doc/src/notes.xml
index a5316dd476..d7f224c38e 100644
--- a/lib/kernel/doc/src/notes.xml
+++ b/lib/kernel/doc/src/notes.xml
@@ -31,6 +31,21 @@
   </header>
   <p>This document describes the changes made to the Kernel application.</p>
 
+<section><title>Kernel 5.4.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Refactored an internal API.</p>
+          <p>
+	    Own Id: OTP-14784</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Kernel 5.4</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/kernel/doc/src/os.xml b/lib/kernel/doc/src/os.xml
index 0e9add4161..0a08e2c78a 100644
--- a/lib/kernel/doc/src/os.xml
+++ b/lib/kernel/doc/src/os.xml
@@ -36,8 +36,99 @@
       only run on a specific platform. On the other hand, with careful
       use, these functions can be of help in enabling a program to run on
       most platforms.</p>
+
+    <note>
+      <p>
+	File operations used to accept filenames containing
+	null characters (integer value zero). This caused
+	the name to be truncated and in some cases arguments
+	to primitive operations to be mixed up. Filenames
+	containing null characters inside the filename
+	are now <em>rejected</em> and will cause primitive
+	file operations to fail.
+      </p>
+      <p>
+	Also environment variable operations used to accept
+	names and values of environment variables containing
+	null characters (integer value zero). This caused
+	operations to silently produce erroneous results.
+	Environment variable names and values containing
+	null characters inside the name or value are now
+	<em>rejected</em> and will cause environment variable
+	operations to fail.
+      </p>
+    </note>
+    <warning>
+      <p>
+	Currently null characters at the end of filenames,
+	environment variable names and values will be accepted
+	by the primitive operations. Such filenames, environment
+	variable names and values are however still documented as
+	invalid. The implementation will also change in the
+	future and reject such filenames, environment variable
+	names and values.
+      </p>
+    </warning>
   </description>
 
+  <datatypes>
+    <datatype>
+      <name name="env_var_name"/>
+      <desc>
+        <p>A string containing valid characters on the specific
+	OS for environment variable names using
+	<seealso marker="file#native_name_encoding/0"><c>file:native_name_encoding()</c></seealso>
+	encoding. Note that specifically null characters (integer
+	value zero) and <c>$=</c> characters are not allowed.
+	However, note that not all invalid characters necessarily
+	will cause the primitiv operations to fail, but may instead
+	produce invalid results.
+	</p>
+      </desc>
+    </datatype>
+    <datatype>
+      <name name="env_var_value"/>
+      <desc>
+        <p>A string containing valid characters on the specific
+	OS for environment variable values using
+	<seealso marker="file#native_name_encoding/0"><c>file:native_name_encoding()</c></seealso>
+	encoding. Note that specifically null characters (integer
+	value zero) are not allowed. However, note that not all
+	invalid characters necessarily will cause the primitiv
+	operations to fail, but may instead produce invalid results.
+	</p>
+      </desc>
+    </datatype>
+    <datatype>
+      <name name="env_var_name_value"/>
+      <desc>
+        <p>
+	  Assuming that environment variables has been correctly
+	  set, a strings containing valid characters on the specific
+	  OS for environment variable names and values using
+	  <seealso marker="file#native_name_encoding/0"><c>file:native_name_encoding()</c></seealso>
+	  encoding. The first <c>$=</c> characters appearing in
+	  the string separates environment variable name (on the
+	  left) from environment variable value (on the right).
+	</p>
+      </desc>
+    </datatype>
+    <datatype>
+      <name name="command_input"/>
+      <desc>
+        <p>All characters needs to be valid characters on the
+	specific OS using
+	<seealso marker="file#native_name_encoding/0"><c>file:native_name_encoding()</c></seealso>
+	encoding. Note that specifically null characters (integer
+	value zero) are not allowed. However, note that not all
+	invalid characters not necessarily will cause
+	<seealso marker="#cmd/1"><c>os:cmd/1</c></seealso>
+	to fail, but may instead produce invalid results.
+	</p>
+      </desc>
+    </datatype>
+  </datatypes>
+ 
   <funcs>
     <func>
       <name name="cmd" arity="1"/>
@@ -49,6 +140,15 @@
           result as a string. This function is a replacement of
           the previous function <c>unix:cmd/1</c>; they are equivalent on a
           Unix platform.</p>
+	  <warning><p>Previous implementation used to allow all characters
+	  as long as they were integer values greater than or equal to zero.
+	  This sometimes lead to unwanted results since null characters
+	  (integer value zero) often are interpreted as string termination.
+	  Current implementation still accepts null characters at the end
+	  of <c><anno>Command</anno></c> even though the documentation
+	  states that no null characters are allowed. This will however
+	  be changed in the future so that no null characters at all will
+	  be accepted.</p></warning>
         <p><em>Examples:</em></p>
         <code type="none">
 LsOut = os:cmd("ls"), % on unix platform
@@ -152,6 +252,15 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
 	<p>On Unix platforms, the environment is set using UTF-8 encoding
 	  if Unicode filename translation is in effect. On Windows, the
 	  environment is set using wide character interfaces.</p>
+	  <note>
+	    <p>
+	      <c><anno>VarName</anno></c> is not allowed to contain
+	      an <c>$=</c> character. Previous implementations used
+	      to just let the <c>$=</c> character through which
+	      silently caused erroneous results. Current implementation
+	      will instead throw a <c>badarg</c> exception.
+	    </p>
+	  </note>
       </desc>
     </func>
 
diff --git a/lib/kernel/doc/src/part_notes.xml b/lib/kernel/doc/src/part_notes.xml
deleted file mode 100644
index 5e849039ee..0000000000
--- a/lib/kernel/doc/src/part_notes.xml
+++ /dev/null
@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Kernel Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The <em>Kernel</em> application has all the code necessary to run
-      the Erlang runtime system itself; File servers and code servers
-      etc.</p>
-    <p>For information about older versions, see
-      <url href="part_notes_history_frame.html">Release Notes History</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/kernel/doc/src/part_notes_history.xml b/lib/kernel/doc/src/part_notes_history.xml
deleted file mode 100644
index 0cf7b793da..0000000000
--- a/lib/kernel/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2006</year>
-      <year>2016</year>
-      <holder>Ericsson AB, All Rights Reserved</holder>
-    </copyright>
-    <legalnotice>
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
- 
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-  The Initial Developer of the Original Code is Ericsson AB.
-    </legalnotice>
-
-    <title>Kernel Release Notes History</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The <em>Kernel</em> application has all the code necessary to run
-      the Erlang runtime system itself; File servers and code servers
-      etc.</p>
-  </description>
-  <include file="notes_history"></include>
-</part>
-
diff --git a/lib/kernel/doc/src/user_guide.gif b/lib/kernel/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/kernel/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/kernel/src/Makefile b/lib/kernel/src/Makefile
index 5946620f0f..4a713b2a99 100644
--- a/lib/kernel/src/Makefile
+++ b/lib/kernel/src/Makefile
@@ -120,6 +120,13 @@ MODULES = \
 	user \
 	user_drv \
 	user_sup \
+	raw_file_io \
+	raw_file_io_compressed \
+	raw_file_io_inflate \
+	raw_file_io_deflate \
+	raw_file_io_delayed \
+	raw_file_io_list \
+	raw_file_io_raw \
 	wrap_log_reader
 
 HRL_FILES= ../include/file.hrl ../include/inet.hrl ../include/inet_sctp.hrl \
@@ -226,7 +233,8 @@ $(EBIN)/disk_log_server.beam: disk_log.hrl
 $(EBIN)/dist_util.beam: ../include/dist_util.hrl ../include/dist.hrl
 $(EBIN)/erl_boot_server.beam: inet_boot.hrl
 $(EBIN)/erl_epmd.beam: inet_int.hrl erl_epmd.hrl
-$(EBIN)/file.beam: ../include/file.hrl
+$(EBIN)/file.beam: ../include/file.hrl file_int.hrl
+$(EBIN)/file_io_server.beam: ../include/file.hrl file_int.hrl
 $(EBIN)/gen_tcp.beam: inet_int.hrl
 $(EBIN)/gen_udp.beam: inet_int.hrl
 $(EBIN)/gen_sctp.beam: ../include/inet_sctp.hrl
@@ -254,3 +262,10 @@ $(EBIN)/net_kernel.beam: ../include/net_address.hrl
 $(EBIN)/os.beam: ../include/file.hrl
 $(EBIN)/ram_file.beam: ../include/file.hrl
 $(EBIN)/wrap_log_reader.beam: disk_log.hrl ../include/file.hrl
+$(EBIN)/raw_file_io.beam: ../include/file.hrl file_int.hrl
+$(EBIN)/raw_file_io_compressed.beam: ../include/file.hrl file_int.hrl
+$(EBIN)/raw_file_io_inflate.beam: ../include/file.hrl file_int.hrl
+$(EBIN)/raw_file_io_deflate.beam: ../include/file.hrl file_int.hrl
+$(EBIN)/raw_file_io_delayed.beam: ../include/file.hrl file_int.hrl
+$(EBIN)/raw_file_io_list.beam: ../include/file.hrl file_int.hrl
+$(EBIN)/raw_file_io_raw.beam: ../include/file.hrl file_int.hrl
diff --git a/lib/kernel/src/dist_util.erl b/lib/kernel/src/dist_util.erl
index 08bd5946cd..fb9f7fd7eb 100644
--- a/lib/kernel/src/dist_util.erl
+++ b/lib/kernel/src/dist_util.erl
@@ -250,7 +250,8 @@ check_dflags(#hs_data{other_node = Node,
                       require_flags = RequiredFlags} = HSData) ->
     Mandatory = ((?DFLAG_EXTENDED_REFERENCES
                       bor ?DFLAG_EXTENDED_PIDS_PORTS
-                      bor ?DFLAG_UTF8_ATOMS)
+                      bor ?DFLAG_UTF8_ATOMS
+                      bor ?DFLAG_NEW_FUN_TAGS)
                      bor RequiredFlags),
     Missing = check_mandatory(0, ?DFLAGS_ALL, Mandatory,
                               OtherFlags, []),
diff --git a/lib/kernel/src/erts_debug.erl b/lib/kernel/src/erts_debug.erl
index 2887014c1c..3456c8511e 100644
--- a/lib/kernel/src/erts_debug.erl
+++ b/lib/kernel/src/erts_debug.erl
@@ -21,7 +21,7 @@
 
 %% Low-level debugging support. EXPERIMENTAL!
 
--export([size/1,df/1,df/2,df/3,ic/1]).
+-export([size/1,df/1,df/2,df/3,dis_to_file/2,ic/1]).
 
 %% This module contains the following *experimental* BIFs:
 %%   disassemble/1
@@ -378,6 +378,16 @@ df(Mod, Func, Arity) when is_atom(Mod), is_atom(Func) ->
     catch _:_ -> {undef,Mod}
     end.
 
+-spec dis_to_file(module(), file:filename()) -> df_ret().
+
+dis_to_file(Mod, Name) when is_atom(Mod) ->
+    try Mod:module_info(functions) of
+	Fs0 when is_list(Fs0) ->
+	    Fs = [{Mod,Func,Arity} || {Func,Arity} <- Fs0],
+	    dff(Name, Fs)
+    catch _:_ -> {undef,Mod}
+    end.
+
 dff(Name, Fs) ->
     case file:open(Name, [write,raw,delayed_write]) of
 	{ok,F} ->
diff --git a/lib/kernel/src/file.erl b/lib/kernel/src/file.erl
index 933f2d5f65..d05199897f 100644
--- a/lib/kernel/src/file.erl
+++ b/lib/kernel/src/file.erl
@@ -72,7 +72,7 @@
               io_device/0, name/0, name_all/0, posix/0]).
 
 %%% Includes and defines
--include("file.hrl").
+-include("file_int.hrl").
 
 -define(FILE_IO_SERVER_TABLE, file_io_servers).
 
@@ -454,41 +454,23 @@ raw_write_file_info(Name, #file_info{} = Info) ->
       Reason :: posix() | badarg | system_limit.
 
 open(Item, ModeList) when is_list(ModeList) ->
-    case lists:member(raw, ModeList) of
-	%% Raw file, use ?PRIM_FILE to handle this file
-	true ->
+    case {lists:member(raw, ModeList), lists:member(ram, ModeList)} of
+        {false, false} ->
+            %% File server file
             Args = [file_name(Item) | ModeList],
             case check_args(Args) of
                 ok ->
                     [FileName | _] = Args,
-                    %% We rely on the returned Handle (in {ok, Handle})
-                    %% being a pid() or a #file_descriptor{}
-                    ?PRIM_FILE:open(FileName, ModeList);
+                    call(open, [FileName, ModeList]);
                 Error ->
                     Error
-	    end;
-	false ->
-	    case lists:member(ram, ModeList) of
-		%% RAM file, use ?RAM_FILE to handle this file
-		true ->
-		    case check_args(ModeList) of
-			ok ->
-			    ?RAM_FILE:open(Item, ModeList);
-			Error ->
-			    Error
-		    end;
-		%% File server file
-		false ->
-		    Args = [file_name(Item) | ModeList],
-		    case check_args(Args) of 
-			ok ->
-			    [FileName | _] = Args,
-			    call(open, [FileName, ModeList]);
-			Error ->
-			    Error
-		    end
-	    end
+            end;
+        {true, _Either} ->
+            raw_file_io:open(file_name(Item), ModeList);
+        {false, true} ->
+            ram_file:open(Item, ModeList)
     end;
+
 %% Old obsolete mode specification in atom or 2-tuple format
 open(Item, Mode) ->
     open(Item, mode_list(Mode)).
@@ -1254,15 +1236,18 @@ sendfile(File, _Sock, _Offet, _Bytes, _Opts) when is_pid(File) ->
 sendfile(File, Sock, Offset, Bytes, []) ->
     sendfile(File, Sock, Offset, Bytes, ?MAX_CHUNK_SIZE, [], [], []);
 sendfile(File, Sock, Offset, Bytes, Opts) ->
-    ChunkSize0 = proplists:get_value(chunk_size, Opts, ?MAX_CHUNK_SIZE),
-    ChunkSize = if ChunkSize0 > ?MAX_CHUNK_SIZE ->
-			?MAX_CHUNK_SIZE;
-		   true -> ChunkSize0
-		end,
-    %% Support for headers, trailers and options has been removed because the
-    %% Darwin and BSD API for using it does not play nice with
-    %% non-blocking sockets. See unix_efile.c for more info.
-    sendfile(File, Sock, Offset, Bytes, ChunkSize, [], [], Opts).
+    try proplists:get_value(chunk_size, Opts, ?MAX_CHUNK_SIZE) of
+        ChunkSize0 when is_integer(ChunkSize0) ->
+            ChunkSize = erlang:min(ChunkSize0, ?MAX_CHUNK_SIZE),
+            %% Support for headers, trailers and options has been removed
+            %% because the Darwin and BSD API for using it does not play nice
+            %% with non-blocking sockets. See unix_efile.c for more info.
+            sendfile(File, Sock, Offset, Bytes, ChunkSize, [], [], Opts);
+        _Other ->
+            {error, badarg}
+    catch
+        error:_ -> {error, badarg}
+    end.
 
 %% sendfile/2
 -spec sendfile(Filename, Socket) ->
diff --git a/lib/compiler/src/v3_life.hrl b/lib/kernel/src/file_int.hrl
index 5c76312067..bafc330c04 100644
--- a/lib/compiler/src/v3_life.hrl
+++ b/lib/kernel/src/file_int.hrl
@@ -1,8 +1,8 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
 %% You may obtain a copy of the License at
@@ -14,16 +14,20 @@
 %% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 %% See the License for the specific language governing permissions and
 %% limitations under the License.
-%% 
+%%
 %% %CopyrightEnd%
 %%
-%% This record contains variable life-time annotation for a
-%% kernel expression.  Added by v3_life, used by v3_codegen.
 
--type vdb_entry() :: {atom(),non_neg_integer(),non_neg_integer()}.
+%%
+%% Internal definitions for the 'file' module and friends.
+%%
+
+-ifndef(FILE_INTERNAL_HRL_).
+-define(FILE_INTERNAL_HRL_, 1).
+
+-include("file.hrl").
 
--record(l, {ke,					%Kernel expression
-	    i=0 :: non_neg_integer(),           %Op number
-	    vdb=[] :: [vdb_entry()],            %Variable database
-	    a=[] :: [term()]}).                 %Core annotation
+-define(CALL_FD(Fd, Method, Args),
+    apply(Fd#file_descriptor.module, Method, [Fd | Args])).
 
+-endif.
diff --git a/lib/kernel/src/file_io_server.erl b/lib/kernel/src/file_io_server.erl
index deb7b315b1..34d5497a4a 100644
--- a/lib/kernel/src/file_io_server.erl
+++ b/lib/kernel/src/file_io_server.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2000-2015. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2017. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -28,7 +28,8 @@
 
 -record(state, {handle,owner,mref,buf,read_mode,unic}).
 
--define(PRIM_FILE, prim_file).
+-include("file_int.hrl").
+
 -define(READ_SIZE_LIST, 128).
 -define(READ_SIZE_BINARY, (8*1024)).
 
@@ -67,8 +68,9 @@ do_start(Spawn, Owner, FileName, ModeList) ->
 		  erlang:dt_restore_tag(Utag),
 		  %% process_flag(trap_exit, true),
 		  case parse_options(ModeList) of
-		      {ReadMode, UnicodeMode, Opts} ->
-			  case ?PRIM_FILE:open(FileName, Opts) of
+                      {ReadMode, UnicodeMode, Opts0} ->
+                          Opts = maybe_add_read_ahead(ReadMode, Opts0),
+			  case raw_file_io:open(FileName, [raw | Opts]) of
 			      {error, Reason} = Error ->
 				  Self ! {Ref, Error},
 				  exit(Reason);
@@ -157,6 +159,24 @@ valid_enc({utf32,little}) ->
 valid_enc(_Other) ->
     {error,badarg}.
 
+%% Add a small read_ahead buffer if the file is opened for reading
+%% only in list mode and no read_ahead is already given.
+maybe_add_read_ahead(binary, Opts) ->
+    Opts;
+maybe_add_read_ahead(list, Opts) ->
+    P = fun(read_ahead) -> true;
+           ({read_ahead,_}) -> true;
+           (append) -> true;
+           (exclusive) -> true;
+           (write) -> true;
+           (_) -> false
+        end,
+    case lists:any(P, Opts) of
+        false ->
+            [{read_ahead, 4096}|Opts];
+        true ->
+            Opts
+    end.
 
 server_loop(#state{mref = Mref} = State) ->
     receive
@@ -205,7 +225,7 @@ io_reply(From, ReplyAs, Reply) ->
 
 file_request({advise,Offset,Length,Advise},
          #state{handle=Handle}=State) ->
-    case ?PRIM_FILE:advise(Handle, Offset, Length, Advise) of
+    case ?CALL_FD(Handle, advise, [Offset, Length, Advise]) of
     {error,Reason}=Reply ->
         {stop,Reason,Reply,State};
     Reply ->
@@ -213,7 +233,7 @@ file_request({advise,Offset,Length,Advise},
     end;
 file_request({allocate, Offset, Length},
          #state{handle = Handle} = State) ->
-    Reply = ?PRIM_FILE:allocate(Handle, Offset, Length),
+    Reply = ?CALL_FD(Handle, allocate, [Offset, Length]),
     {reply, Reply, State};
 file_request({pread,At,Sz}, State)
   when At =:= cur;
@@ -256,7 +276,7 @@ file_request({pwrite,At,Data},
     end;
 file_request(datasync,
 	     #state{handle=Handle}=State) ->
-    case ?PRIM_FILE:datasync(Handle) of
+    case ?CALL_FD(Handle, datasync, []) of
 	{error,Reason}=Reply ->
 	    {stop,Reason,Reply,State};
 	Reply ->
@@ -264,7 +284,7 @@ file_request(datasync,
     end;
 file_request(sync, 
 	     #state{handle=Handle}=State) ->
-    case ?PRIM_FILE:sync(Handle) of
+    case ?CALL_FD(Handle, sync, []) of
 	{error,Reason}=Reply ->
 	    {stop,Reason,Reply,State};
 	Reply ->
@@ -272,7 +292,7 @@ file_request(sync,
     end;
 file_request(close, 
 	     #state{handle=Handle}=State) ->
-    case ?PRIM_FILE:close(Handle) of
+    case ?CALL_FD(Handle, close, []) of
 	{error,Reason}=Reply ->
 	    {stop,Reason,Reply,State#state{buf= <<>>}};
 	Reply ->
@@ -288,7 +308,7 @@ file_request({position,At},
     end;
 file_request(truncate, 
 	     #state{handle=Handle}=State) ->
-    case ?PRIM_FILE:truncate(Handle) of
+    case ?CALL_FD(Handle, truncate, []) of
 	{error,Reason}=Reply ->
 	    {stop,Reason,Reply,State#state{buf= <<>>}};
 	Reply ->
@@ -398,7 +418,7 @@ io_request_loop([Request|Tail],
 %%
 put_chars(Chars, latin1, #state{handle=Handle, unic=latin1}=State) ->
     NewState = State#state{buf = <<>>},
-    case ?PRIM_FILE:write(Handle, Chars) of
+    case ?CALL_FD(Handle, write, [Chars]) of
 	{error,Reason}=Reply ->
 	    {stop,Reason,Reply,NewState};
 	Reply ->
@@ -408,7 +428,7 @@ put_chars(Chars, InEncoding, #state{handle=Handle, unic=OutEncoding}=State) ->
     NewState = State#state{buf = <<>>},
     case unicode:characters_to_binary(Chars,InEncoding,OutEncoding) of
 	Bin when is_binary(Bin) ->
-	    case ?PRIM_FILE:write(Handle, Bin) of
+	    case ?CALL_FD(Handle, write, [Bin]) of
 		{error,Reason}=Reply ->
 		    {stop,Reason,Reply,NewState};
 		Reply ->
@@ -422,7 +442,7 @@ put_chars(Chars, InEncoding, #state{handle=Handle, unic=OutEncoding}=State) ->
 
 get_line(S, {<<>>, Cont}, OutEnc,
 	 #state{handle=Handle, read_mode=Mode, unic=InEnc}=State) ->
-    case ?PRIM_FILE:read(Handle, read_size(Mode)) of
+    case ?CALL_FD(Handle, read, [read_size(Mode)]) of
 	{ok,Bin} ->
 	    get_line(S, convert_enc([Cont, Bin], InEnc, OutEnc), OutEnc, State);
 	eof ->
@@ -472,7 +492,7 @@ get_chars(N, OutEnc,#state{handle=Handle,buf=Buf,read_mode=ReadMode,unic=latin1}
     BufSize = byte_size(Buf),
     NeedSize = N-BufSize,
     Size = erlang:max(NeedSize, ?READ_SIZE_BINARY),
-    case ?PRIM_FILE:read(Handle, Size) of
+    case ?CALL_FD(Handle, read, [Size]) of
 	{ok, B} ->
 	    if BufSize+byte_size(B) < N ->
 		    std_reply(cat(Buf, B, ReadMode,latin1,OutEnc), State);
@@ -504,7 +524,7 @@ get_chars(N, OutEnc,#state{handle=Handle,buf=Buf,read_mode=ReadMode,unic=InEncod
 		%% Need more, Try to read 4*needed in bytes...
 		NeedSize = (N - BufCount) * 4,
 		Size = erlang:max(NeedSize, ?READ_SIZE_BINARY),
-		case ?PRIM_FILE:read(Handle, Size) of
+		case ?CALL_FD(Handle, read, [Size]) of
 		    {ok, B} ->
 			NewBuf = list_to_binary([Buf,B]),
 			{NewCount,NewSplit} = count_and_find(NewBuf,N,InEncoding),
@@ -544,7 +564,7 @@ get_chars(Mod, Func, XtraArg, OutEnc, #state{buf=Buf}=State) ->
 
 get_chars_empty(Mod, Func, XtraArg, S, latin1,
 		#state{handle=Handle,read_mode=ReadMode, unic=latin1}=State) ->
-    case ?PRIM_FILE:read(Handle, read_size(ReadMode)) of
+    case ?CALL_FD(Handle, read, [read_size(ReadMode)]) of
 	{ok,Bin} ->
 	    get_chars_apply(Mod, Func, XtraArg, S, latin1, State, Bin);
 	eof ->
@@ -554,7 +574,7 @@ get_chars_empty(Mod, Func, XtraArg, S, latin1,
     end;
 get_chars_empty(Mod, Func, XtraArg, S, OutEnc,
 		#state{handle=Handle,read_mode=ReadMode}=State) ->
-    case ?PRIM_FILE:read(Handle, read_size(ReadMode)) of
+    case ?CALL_FD(Handle, read, [read_size(ReadMode)]) of
 	{ok,Bin} ->
 	    get_chars_apply(Mod, Func, XtraArg, S, OutEnc, State, Bin);
 	eof ->
@@ -564,7 +584,7 @@ get_chars_empty(Mod, Func, XtraArg, S, OutEnc,
     end.
 get_chars_notempty(Mod, Func, XtraArg, S, OutEnc,
 		   #state{handle=Handle,read_mode=ReadMode,buf = B}=State) ->
-    case ?PRIM_FILE:read(Handle, read_size(ReadMode)) of
+    case ?CALL_FD(Handle, read, [read_size(ReadMode)]) of
 	{ok,Bin} ->
 	    get_chars_apply(Mod, Func, XtraArg, S, OutEnc, State, list_to_binary([B,Bin]));
 	eof ->
@@ -918,13 +938,10 @@ cbv({utf32,little},_) ->
 %% Compensates ?PRIM_FILE:position/2 for the number of bytes 
 %% we have buffered
 position(Handle, At, Buf) ->
-    ?PRIM_FILE:position(
-       Handle,
-       case At of
-	   cur ->
-	       {cur, -byte_size(Buf)};
-	   {cur, Offs} ->
-	       {cur, Offs-byte_size(Buf)};
-	   _ ->
-	       At
-       end).
+    SeekTo =
+        case At of
+            {cur, Offs} -> {cur, Offs-byte_size(Buf)};
+            cur -> {cur, -byte_size(Buf)};
+            _ -> At
+        end,
+    ?CALL_FD(Handle, position, [SeekTo]).
diff --git a/lib/kernel/src/file_server.erl b/lib/kernel/src/file_server.erl
index 6e8f64d932..ecc1ffbdd6 100644
--- a/lib/kernel/src/file_server.erl
+++ b/lib/kernel/src/file_server.erl
@@ -63,7 +63,7 @@ stop() ->
 %%% Callback functions from gen_server
 %%%----------------------------------------------------------------------
 
--type state() :: port().	% Internal type
+-type state() :: term().	% Internal type
 
 %%----------------------------------------------------------------------
 %% Func: init/1
@@ -77,14 +77,8 @@ stop() ->
 
 init([]) ->
     process_flag(trap_exit, true),
-    case ?PRIM_FILE:start() of
-	{ok, Handle} ->
-	    ?FILE_IO_SERVER_TABLE =
-                ets:new(?FILE_IO_SERVER_TABLE, [named_table]),
-	    {ok, Handle};
-	{error, Reason} ->
-	    {stop, Reason}
-    end.
+    ?FILE_IO_SERVER_TABLE =  ets:new(?FILE_IO_SERVER_TABLE, [named_table]),
+    {ok, undefined}.
 
 %%----------------------------------------------------------------------
 %% Func: handle_call/3
@@ -101,7 +95,7 @@ init([]) ->
 	{'reply', 'eof' | 'ok' | {'error', term()} | {'ok', term()}, state()} |
 	{'stop', 'normal', 'stopped', state()}.
 
-handle_call({open, Name, ModeList}, {Pid, _Tag} = _From, Handle)
+handle_call({open, Name, ModeList}, {Pid, _Tag} = _From, State)
   when is_list(ModeList) ->
     Child = ?FILE_IO_SERVER:start_link(Pid, Name, ModeList),
     case Child of
@@ -110,78 +104,78 @@ handle_call({open, Name, ModeList}, {Pid, _Tag} = _From, Handle)
 	_ ->
 	    ok
     end,
-    {reply, Child, Handle};
+    {reply, Child, State};
 
-handle_call({open, _Name, _Mode}, _From, Handle) ->
-    {reply, {error, einval}, Handle};
+handle_call({open, _Name, _Mode}, _From, State) ->
+    {reply, {error, einval}, State};
 
-handle_call({read_file, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:read_file(Name), Handle};
+handle_call({read_file, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:read_file(Name), State};
 
-handle_call({write_file, Name, Bin}, _From, Handle) ->
-    {reply, ?PRIM_FILE:write_file(Name, Bin), Handle};
+handle_call({write_file, Name, Bin}, _From, State) ->
+    {reply, ?PRIM_FILE:write_file(Name, Bin), State};
 
-handle_call({set_cwd, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:set_cwd(Handle, Name), Handle};
+handle_call({set_cwd, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:set_cwd(Name), State};
 
-handle_call({delete, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:delete(Handle, Name), Handle};
+handle_call({delete, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:delete(Name), State};
 
-handle_call({rename, Fr, To}, _From, Handle) ->
-    {reply, ?PRIM_FILE:rename(Handle, Fr, To), Handle};
+handle_call({rename, Fr, To}, _From, State) ->
+    {reply, ?PRIM_FILE:rename(Fr, To), State};
 
-handle_call({make_dir, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:make_dir(Handle, Name), Handle};
+handle_call({make_dir, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:make_dir(Name), State};
 
-handle_call({del_dir, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:del_dir(Handle, Name), Handle};
+handle_call({del_dir, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:del_dir(Name), State};
 
-handle_call({list_dir, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:list_dir(Handle, Name), Handle};
-handle_call({list_dir_all, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:list_dir_all(Handle, Name), Handle};
+handle_call({list_dir, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:list_dir(Name), State};
+handle_call({list_dir_all, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:list_dir_all(Name), State};
 
-handle_call(get_cwd, _From, Handle) ->
-    {reply, ?PRIM_FILE:get_cwd(Handle), Handle};
-handle_call({get_cwd}, _From, Handle) ->
-    {reply, ?PRIM_FILE:get_cwd(Handle), Handle};
-handle_call({get_cwd, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:get_cwd(Handle, Name), Handle};
+handle_call(get_cwd, _From, State) ->
+    {reply, ?PRIM_FILE:get_cwd(), State};
+handle_call({get_cwd}, _From, State) ->
+    {reply, ?PRIM_FILE:get_cwd(), State};
+handle_call({get_cwd, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:get_cwd(Name), State};
 
-handle_call({read_file_info, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:read_file_info(Handle, Name), Handle};
+handle_call({read_file_info, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:read_file_info(Name), State};
 
-handle_call({read_file_info, Name, Opts}, _From, Handle) ->
-    {reply, ?PRIM_FILE:read_file_info(Handle, Name, Opts), Handle};
+handle_call({read_file_info, Name, Opts}, _From, State) ->
+    {reply, ?PRIM_FILE:read_file_info(Name, Opts), State};
 
-handle_call({altname, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:altname(Handle, Name), Handle};
+handle_call({altname, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:altname(Name), State};
 
-handle_call({write_file_info, Name, Info}, _From, Handle) ->
-    {reply, ?PRIM_FILE:write_file_info(Handle, Name, Info), Handle};
+handle_call({write_file_info, Name, Info}, _From, State) ->
+    {reply, ?PRIM_FILE:write_file_info(Name, Info), State};
 
-handle_call({write_file_info, Name, Info, Opts}, _From, Handle) ->
-    {reply, ?PRIM_FILE:write_file_info(Handle, Name, Info, Opts), Handle};
+handle_call({write_file_info, Name, Info, Opts}, _From, State) ->
+    {reply, ?PRIM_FILE:write_file_info(Name, Info, Opts), State};
 
-handle_call({read_link_info, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:read_link_info(Handle, Name), Handle};
+handle_call({read_link_info, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:read_link_info(Name), State};
 
-handle_call({read_link_info, Name, Opts}, _From, Handle) ->
-    {reply, ?PRIM_FILE:read_link_info(Handle, Name, Opts), Handle};
+handle_call({read_link_info, Name, Opts}, _From, State) ->
+    {reply, ?PRIM_FILE:read_link_info(Name, Opts), State};
 
-handle_call({read_link, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:read_link(Handle, Name), Handle};
-handle_call({read_link_all, Name}, _From, Handle) ->
-    {reply, ?PRIM_FILE:read_link_all(Handle, Name), Handle};
+handle_call({read_link, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:read_link(Name), State};
+handle_call({read_link_all, Name}, _From, State) ->
+    {reply, ?PRIM_FILE:read_link_all(Name), State};
 
-handle_call({make_link, Old, New}, _From, Handle) ->
-    {reply, ?PRIM_FILE:make_link(Handle, Old, New), Handle};
+handle_call({make_link, Old, New}, _From, State) ->
+    {reply, ?PRIM_FILE:make_link(Old, New), State};
 
-handle_call({make_symlink, Old, New}, _From, Handle) ->
-    {reply, ?PRIM_FILE:make_symlink(Handle, Old, New), Handle};
+handle_call({make_symlink, Old, New}, _From, State) ->
+    {reply, ?PRIM_FILE:make_symlink(Old, New), State};
 
 handle_call({copy, SourceName, SourceOpts, DestName, DestOpts, Length},
-	    _From, Handle) ->
+	    _From, State) ->
     Reply = 
 	case ?PRIM_FILE:open(SourceName, [read, binary | SourceOpts]) of
 	    {ok, Source} ->
@@ -201,14 +195,14 @@ handle_call({copy, SourceName, SourceOpts, DestName, DestOpts, Length},
 	    {error, _} = Error ->
 		Error
 	end,
-    {reply, Reply, Handle};
+    {reply, Reply, State};
 
-handle_call(stop, _From, Handle) ->
-    {stop, normal, stopped, Handle};
+handle_call(stop, _From, State) ->
+    {stop, normal, stopped, State};
 
-handle_call(Request, From, Handle) ->
+handle_call(Request, From, State) ->
     error_logger:error_msg("handle_call(~tp, ~tp, _)", [Request, From]),
-    {noreply, Handle}.
+    {noreply, State}.
 
 %%----------------------------------------------------------------------
 %% Func: handle_cast/2
@@ -233,14 +227,9 @@ handle_cast(Msg, State) ->
 -spec handle_info(term(), state()) ->
         {'noreply', state()} | {'stop', 'normal', state()}.
 
-handle_info({'EXIT', Pid, _Reason}, Handle) when is_pid(Pid) ->
+handle_info({'EXIT', Pid, _Reason}, State) when is_pid(Pid) ->
     ets:delete(?FILE_IO_SERVER_TABLE, Pid),
-    {noreply, Handle};
-
-handle_info({'EXIT', Handle, _Reason}, Handle) ->
-    error_logger:error_msg("Port controlling ~w terminated in ~w",
-			   [?FILE_SERVER, ?MODULE]),
-    {stop, normal, Handle};
+    {noreply, State};
 
 handle_info(Info, State) ->
     error_logger:error_msg("handle_Info(~tp, _)", [Info]),
@@ -254,8 +243,8 @@ handle_info(Info, State) ->
 
 -spec terminate(term(), state()) -> 'ok'.
 
-terminate(_Reason, Handle) ->
-    ?PRIM_FILE:stop(Handle).
+terminate(_Reason, _State) ->
+    ok.
 
 %%----------------------------------------------------------------------
 %% Func: code_change/3
diff --git a/lib/kernel/src/group.erl b/lib/kernel/src/group.erl
index a5210901f2..e1198d2587 100644
--- a/lib/kernel/src/group.erl
+++ b/lib/kernel/src/group.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2017. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -261,11 +261,11 @@ io_request({put_chars,latin1,M,F,As}, Drv, From, Buf) ->
     end;
 
 io_request({get_chars,Encoding,Prompt,N}, Drv, _From, Buf) ->
-    get_chars(Prompt, io_lib, collect_chars, N, Drv, Buf, Encoding);
+    get_chars_n(Prompt, io_lib, collect_chars, N, Drv, Buf, Encoding);
 io_request({get_line,Encoding,Prompt}, Drv, _From, Buf) ->
-    get_chars(Prompt, io_lib, collect_line, [], Drv, Buf, Encoding);
+    get_chars_line(Prompt, io_lib, collect_line, [], Drv, Buf, Encoding);
 io_request({get_until,Encoding, Prompt,M,F,As}, Drv, _From, Buf) ->
-    get_chars(Prompt, io_lib, get_until, {M,F,As}, Drv, Buf, Encoding);
+    get_chars_line(Prompt, io_lib, get_until, {M,F,As}, Drv, Buf, Encoding);
 io_request({get_password,_Encoding},Drv,_From,Buf) ->
     get_password_chars(Drv, Buf);
 io_request({setopts,Opts}, Drv, _From, Buf) when is_list(Opts) ->
@@ -434,7 +434,7 @@ getopts(Drv,Buf) ->
     {ok,[Exp,Echo,Bin,Uni],Buf}.
     
 
-%% get_chars(Prompt, Module, Function, XtraArgument, Drv, Buffer)
+%% get_chars_*(Prompt, Module, Function, XtraArgument, Drv, Buffer)
 %%  Gets characters from the input Drv until as the applied function
 %%  returns {stop,Result,Rest}. Does not block output until input has been
 %%  received.
@@ -452,12 +452,21 @@ get_password_chars(Drv,Buf) ->
 	    {exit, terminated}
     end.
 
-get_chars(Prompt, M, F, Xa, Drv, Buf, Encoding) ->
+get_chars_n(Prompt, M, F, Xa, Drv, Buf, Encoding) ->
+    Pbs = prompt_bytes(Prompt, Encoding),
+    case get(echo) of
+        true ->
+            get_chars_loop(Pbs, M, F, Xa, Drv, Buf, start, Encoding);
+        false ->
+            get_chars_n_loop(Pbs, M, F, Xa, Drv, Buf, start, Encoding)
+    end.
+
+get_chars_line(Prompt, M, F, Xa, Drv, Buf, Encoding) ->
     Pbs = prompt_bytes(Prompt, Encoding),
     get_chars_loop(Pbs, M, F, Xa, Drv, Buf, start, Encoding).
 
 get_chars_loop(Pbs, M, F, Xa, Drv, Buf0, State, Encoding) ->
-    Result = case get(echo) of 
+    Result = case get(echo) of
 		 true ->
 		     get_line(Buf0, Pbs, Drv, Encoding);
 		 false ->
@@ -466,8 +475,8 @@ get_chars_loop(Pbs, M, F, Xa, Drv, Buf0, State, Encoding) ->
 		     get_line_echo_off(Buf0, Pbs, Drv)
 	     end,
     case Result of
-	{done,Line,Buf1} ->
-	    get_chars_apply(Pbs, M, F, Xa, Drv, Buf1, State, Line, Encoding);
+	{done,Line,Buf} ->
+            get_chars_apply(Pbs, M, F, Xa, Drv, Buf, State, Line, Encoding);
 	interrupted ->
 	    {error,{error,interrupted},[]};
 	terminated ->
@@ -476,12 +485,29 @@ get_chars_loop(Pbs, M, F, Xa, Drv, Buf0, State, Encoding) ->
 
 get_chars_apply(Pbs, M, F, Xa, Drv, Buf, State0, Line, Encoding) ->
     case catch M:F(State0, cast(Line,get(read_mode), Encoding), Encoding, Xa) of
-	{stop,Result,Rest} ->
-	    {ok,Result,append(Rest, Buf, Encoding)};
-	{'EXIT',_} ->
-	    {error,{error,err_func(M, F, Xa)},[]};
-	State1 ->
-	    get_chars_loop(Pbs, M, F, Xa, Drv, Buf, State1, Encoding)
+        {stop,Result,Rest} ->
+            {ok,Result,append(Rest, Buf, Encoding)};
+        {'EXIT',_} ->
+            {error,{error,err_func(M, F, Xa)},[]};
+        State1 ->
+            get_chars_loop(Pbs, M, F, Xa, Drv, Buf, State1, Encoding)
+    end.
+
+get_chars_n_loop(Pbs, M, F, Xa, Drv, Buf0, State, Encoding) ->
+    try M:F(State, cast(Buf0, get(read_mode), Encoding), Encoding, Xa) of
+        {stop,Result,Rest} ->
+            {ok, Result, Rest};
+        State1 ->
+            case get_chars_echo_off(Pbs, Drv) of
+                interrupted ->
+                    {error,{error,interrupted},[]};
+                terminated ->
+                    {exit,terminated};
+                Buf ->
+                    get_chars_n_loop(Pbs, M, F, Xa, Drv, Buf, State1, Encoding)
+            end
+    catch _:_ ->
+            {error,{error,err_func(M, F, Xa)},[]}
     end.
 
 %% Convert error code to make it look as before
@@ -684,6 +710,29 @@ get_line_echo_off1({Chars,[]}, Drv) ->
 get_line_echo_off1({Chars,Rest}, _Drv) ->
     {done,lists:reverse(Chars),case Rest of done -> []; _ -> Rest end}.
 
+get_chars_echo_off(Pbs, Drv) ->
+    send_drv_reqs(Drv, [{put_chars, unicode,Pbs}]),
+    get_chars_echo_off1(Drv).
+
+get_chars_echo_off1(Drv) ->
+    receive
+        {Drv, {data, Cs}} ->
+            Cs;
+	{Drv, eof} ->
+            eof;
+	{io_request,From,ReplyAs,Req} when is_pid(From) ->
+	    io_request(Req, From, ReplyAs, Drv, []),
+	    get_chars_echo_off1(Drv);
+        {reply,{{From,ReplyAs},Reply}} when From =/= undefined ->
+            %% We take care of replies from puts here as well
+            io_reply(From, ReplyAs, Reply),
+            get_chars_echo_off1(Drv);
+	{'EXIT',Drv,interrupt} ->
+	    interrupted;
+	{'EXIT',Drv,_} ->
+	    terminated
+    end.
+
 %% We support line editing for the ICANON mode except the following
 %% line editing characters, which already has another meaning in
 %% echo-on mode (See Advanced Programming in the Unix Environment, 2nd ed,
diff --git a/lib/kernel/src/inet_int.hrl b/lib/kernel/src/inet_int.hrl
index bc5b67f7bf..357e27826c 100644
--- a/lib/kernel/src/inet_int.hrl
+++ b/lib/kernel/src/inet_int.hrl
@@ -100,6 +100,8 @@
 -define(TCP_REQ_RECV,           42).
 -define(TCP_REQ_UNRECV,         43).
 -define(TCP_REQ_SHUTDOWN,       44).
+-define(TCP_REQ_SENDFILE,       45).
+
 %% UDP and SCTP requests
 -define(PACKET_REQ_RECV,        60).
 %%-define(SCTP_REQ_LISTEN,        61). MERGED
@@ -319,6 +321,12 @@
 	[((X) bsr 24) band 16#ff, ((X) bsr 16) band 16#ff,
 	 ((X) bsr 8) band 16#ff, (X) band 16#ff]).
 
+-define(int64(X),
+	[((X) bsr 56) band 16#ff, ((X) bsr 48) band 16#ff,
+	 ((X) bsr 40) band 16#ff, ((X) bsr 32) band 16#ff,
+	 ((X) bsr 24) band 16#ff, ((X) bsr 16) band 16#ff,
+	 ((X) bsr 8) band 16#ff, (X) band 16#ff]).
+
 -define(intAID(X), % For SCTP AssocID
         ?int32(X)).
 
diff --git a/lib/kernel/src/kernel.app.src b/lib/kernel/src/kernel.app.src
index b5e5f8eb73..e4852a6e75 100644
--- a/lib/kernel/src/kernel.app.src
+++ b/lib/kernel/src/kernel.app.src
@@ -88,6 +88,13 @@
              inet_udp,
 	     inet_sctp,
              pg2,
+             raw_file_io,
+             raw_file_io_compressed,
+             raw_file_io_deflate,
+             raw_file_io_delayed,
+             raw_file_io_inflate,
+             raw_file_io_list,
+             raw_file_io_raw,
 	     seq_trace,
 	     standard_error,
 	     wrap_log_reader]},
@@ -120,6 +127,6 @@
   {applications, []},
   {env, [{error_logger, tty}]},
   {mod, {kernel, []}},
-  {runtime_dependencies, ["erts-9.1.1", "stdlib-3.4.3", "sasl-3.0"]}
+  {runtime_dependencies, ["erts-10.0", "stdlib-3.5", "sasl-3.0"]}
  ]
 }.
diff --git a/lib/kernel/src/kernel.appup.src b/lib/kernel/src/kernel.appup.src
index fc5417597f..4ee497bbbd 100644
--- a/lib/kernel/src/kernel.appup.src
+++ b/lib/kernel/src/kernel.appup.src
@@ -18,7 +18,9 @@
 %% %CopyrightEnd%
 {"%VSN%",
  %% Up from - max one major revision back
- [{<<"5\\.3(\\.[0-9]+)*">>,[restart_new_emulator]}], % OTP-20.*
+ [{<<"5\\.[0-3](\\.[0-9]+)*">>,[restart_new_emulator]}, % OTP-19.*, OTP-20.0
+  {<<"5\\.4(\\.[0-9]+)*">>,[restart_new_emulator]}],    % OTP-20.1+
  %% Down to - max one major revision back
- [{<<"5\\.3(\\.[0-9]+)*">>,[restart_new_emulator]}]  % OTP-20.*
+ [{<<"5\\.[0-3](\\.[0-9]+)*">>,[restart_new_emulator]}, % OTP-19.*, OTP-20.0
+  {<<"5\\.4(\\.[0-9]+)*">>,[restart_new_emulator]}]     % OTP-20.1+
 }.
diff --git a/lib/kernel/src/net_kernel.erl b/lib/kernel/src/net_kernel.erl
index f36b4f1e6a..cdb10a7b12 100644
--- a/lib/kernel/src/net_kernel.erl
+++ b/lib/kernel/src/net_kernel.erl
@@ -70,8 +70,8 @@
 	 protocol_childspecs/0,
 	 epmd_module/0]).
 
--export([connect/1, disconnect/1, hidden_connect/1, passive_cnct/1]).
--export([hidden_connect_node/1]). %% explicit connect
+-export([disconnect/1, passive_cnct/1]).
+-export([hidden_connect_node/1]).
 -export([set_net_ticktime/1, set_net_ticktime/2, get_net_ticktime/0]).
 
 -export([node_info/1, node_info/2, nodes_info/0,
@@ -122,6 +122,7 @@
 
 -record(connection, {
 		     node,          %% remote node name
+                     conn_id,       %% Connection identity
 		     state,         %% pending | up | up_pending
 		     owner,         %% owner pid
 	             pending_owner, %% possible new owner
@@ -247,14 +248,15 @@ ticktime_res(A)      when is_atom(A)             -> A.
 
 %% Called though BIF's
 
-connect(Node) ->               do_connect(Node, normal, false).
 %%% Long timeout if blocked (== barred), only affects nodes with
 %%% {dist_auto_connect, once} set.
-passive_cnct(Node) ->              do_connect(Node, normal, true).
-disconnect(Node) ->            request({disconnect, Node}).
+passive_cnct(Node) ->
+    case request({passive_cnct, Node}) of
+        ignored -> false;
+        Other -> Other
+    end.
 
-%% connect but not seen
-hidden_connect(Node) ->        do_connect(Node, hidden, false).
+disconnect(Node) ->            request({disconnect, Node}).
 
 %% Should this node publish itself on Node?
 publish_on_node(Node) when is_atom(Node) ->
@@ -272,67 +274,30 @@ connect_node(Node) when is_atom(Node) ->
 hidden_connect_node(Node) when is_atom(Node) ->
     request({connect, hidden, Node}).
 
-do_connect(Node, Type, WaitForBarred) -> %% Type = normal | hidden
-    case catch ets:lookup(sys_dist, Node) of
-	{'EXIT', _} ->
-	    ?connect_failure(Node,{table_missing, sys_dist}),
-	    false;
-	[#barred_connection{}] ->
-	    case WaitForBarred of
-		false ->
-		    false;
-		true ->
-		    Pid = spawn(?MODULE,passive_connect_monitor,[self(),Node]),
-		    receive
-			{Pid, true} ->
-			    %%io:format("Net Kernel: barred connection (~p) "
-			    %%          "connected from other end.~n",[Node]),
-			    true;
-			{Pid, false} ->
-			    ?connect_failure(Node,{barred_connection,
-						   ets:lookup(sys_dist, Node)}),
-			    %%io:format("Net Kernel: barred connection (~p) "
-			    %%      "- failure.~n",[Node]),
-			    false
-		    end
-	    end;
-	Else ->
-	    case application:get_env(kernel, dist_auto_connect) of
-		{ok, never} ->
-		    ?connect_failure(Node,{dist_auto_connect,never}),
-		    false;
-		% This might happen due to connection close
-		% not beeing propagated to user space yet.
-		% Save the day by just not connecting...
-		{ok, once} when Else =/= [],
-				(hd(Else))#connection.state =:= up ->
-		    ?connect_failure(Node,{barred_connection,
-				ets:lookup(sys_dist, Node)}),
-		    false;
-		_ ->
-		    request({connect, Type, Node})
-	    end
-    end.
 
-passive_connect_monitor(Parent, Node) ->
+passive_connect_monitor(From, Node) ->
     ok = monitor_nodes(true,[{node_type,all}]),
-    case lists:member(Node,nodes([connected])) of
-	true ->
-	    ok = monitor_nodes(false,[{node_type,all}]),
-	    Parent ! {self(),true};
-	_ ->
-	    Ref = make_ref(),
-	    Tref = erlang:send_after(connecttime(),self(),Ref),
-	    receive
-		Ref ->
-		    ok = monitor_nodes(false,[{node_type,all}]),
-		    Parent ! {self(), false};
-		{nodeup,Node,_} ->
-		    ok = monitor_nodes(false,[{node_type,all}]),
-		    _ = erlang:cancel_timer(Tref),
-		    Parent ! {self(),true}
-	    end
-    end.
+    Reply = case lists:member(Node,nodes([connected])) of
+                true ->
+                    io:format("~p: passive_connect_monitor ~p\n", [self(), ?LINE]),
+                    true;
+                _ ->
+                    receive
+                        {nodeup,Node,_} ->
+                            io:format("~p: passive_connect_monitor ~p\n", [self(), ?LINE]),
+                            true
+                    after connecttime() ->
+                            io:format("~p: passive_connect_monitor ~p\n", [self(), ?LINE]),
+                            false
+                    end
+            end,
+    ok = monitor_nodes(false,[{node_type,all}]),
+    io:format("~p: passive_connect_monitor ~p\n", [self(), ?LINE]),
+    {Pid, Tag} = From,
+    io:format("~p: passive_connect_monitor ~p\n", [self(), ?LINE]),
+    erlang:send(Pid, {Tag, Reply}),
+    io:format("~p: passive_connect_monitor ~p\n", [self(), ?LINE]).
+
 
 %% If the net_kernel isn't running we ignore all requests to the
 %% kernel, thus basically accepting them :-)
@@ -394,40 +359,135 @@ init({Name, LongOrShortNames, TickT, CleanHalt}) ->
     end.
 
 
+do_auto_connect(Type, Node, ConnId, WaitForBarred, From, State) ->
+    ConnLookup = ets:lookup(sys_dist, Node),
+
+    case ConnLookup of
+        [#barred_connection{}] ->
+            case WaitForBarred of
+                false ->
+                    {reply, false, State};
+                true ->
+                    spawn(?MODULE,passive_connect_monitor,[From,Node]),
+                    {noreply, State}
+            end;
+
+        [#connection{conn_id=ConnId, state = up}] ->
+            {reply, true, State};
+        [#connection{conn_id=ConnId, waiting=Waiting}=Conn] ->
+            case From of
+                noreply -> ok;
+                _ -> ets:insert(sys_dist, Conn#connection{waiting = [From|Waiting]})
+            end,
+            {noreply, State};
+
+        _ ->
+            case application:get_env(kernel, dist_auto_connect) of
+                {ok, never} ->
+                    ?connect_failure(Node,{dist_auto_connect,never}),
+                    {reply, false, State};
+
+                %% This might happen due to connection close
+                %% not beeing propagated to user space yet.
+                %% Save the day by just not connecting...
+                {ok, once} when ConnLookup =/= [],
+                                (hd(ConnLookup))#connection.state =:= up ->
+                    ?connect_failure(Node,{barred_connection,
+                                           ets:lookup(sys_dist, Node)}),
+                    {reply, false, State};
+                _ ->
+                    case setup(ConnLookup, Node,ConnId,Type,From,State) of
+                        {ok, SetupPid} ->
+                            Owners = [{SetupPid, Node} | State#state.conn_owners],
+                            {noreply,State#state{conn_owners=Owners}};
+                        _Error  ->
+                            ?connect_failure(Node, {setup_call, failed, _Error}),
+                            {reply, false, State}
+                    end
+            end
+    end.
+
+
+do_explicit_connect([#connection{conn_id = ConnId, state = up}], _, _, ConnId, _From, State) ->
+    {reply, true, State};
+do_explicit_connect([#connection{conn_id = ConnId}=Conn], _, _, ConnId, From, State)
+  when Conn#connection.state =:= pending;
+       Conn#connection.state =:= up_pending ->
+    Waiting = Conn#connection.waiting,
+    ets:insert(sys_dist, Conn#connection{waiting = [From|Waiting]}),    
+    {noreply, State};
+do_explicit_connect([#barred_connection{}], Type, Node, ConnId, From , State) ->
+    %% Barred connection only affects auto_connect, ignore it.
+    do_explicit_connect([], Type, Node, ConnId, From , State);
+do_explicit_connect(ConnLookup, Type, Node, ConnId, From , State) ->
+    case setup(ConnLookup, Node,ConnId,Type,From,State) of
+        {ok, SetupPid} ->
+            Owners = [{SetupPid, Node} | State#state.conn_owners],
+            {noreply,State#state{conn_owners=Owners}};
+        _Error ->
+            ?connect_failure(Node, {setup_call, failed, _Error}),
+            {reply, false, State}
+    end.
+
+-define(ERTS_DIST_CON_ID_MASK, 16#ffffff).  % also in external.h
+
+verify_new_conn_id([], {Nr,_DHandle})
+  when (Nr band (bnot ?ERTS_DIST_CON_ID_MASK)) =:= 0 ->
+    true;
+verify_new_conn_id([#connection{conn_id = {Old,_}}], {New,_})
+  when New =:= ((Old+1) band ?ERTS_DIST_CON_ID_MASK) ->
+    true;
+verify_new_conn_id(_, _) ->
+    false.
+                                                              
+
+
 %% ------------------------------------------------------------
 %% handle_call.
 %% ------------------------------------------------------------
 
 %%
-%% Set up a connection to Node.
-%% The response is delayed until the connection is up and
-%% running.
+%% Passive auto-connect to Node.
+%% The response is delayed until the connection is up and running.
 %%
-handle_call({connect, _, Node}, From, State) when Node =:= node() ->
+handle_call({passive_cnct, Node}, From, State) when Node =:= node() ->
+    async_reply({reply, true, State}, From);
+handle_call({passive_cnct, Node}, From, State) ->
+    verbose({passive_cnct, Node}, 1, State),
+    Type = normal,
+    WaitForBarred = true,
+    R = case (catch erts_internal:new_connection(Node)) of
+            {Nr,_DHandle}=ConnId when is_integer(Nr) ->
+                do_auto_connect(Type, Node, ConnId, WaitForBarred, From, State);
+
+            _Error ->
+                error_logger:error_msg("~n** Cannot get connection id for node ~w~n",
+                                       [Node]),
+                {reply, false, State}
+        end,
+
+    return_call(R, From);
+
+%%
+%% Explicit connect
+%% The response is delayed until the connection is up and running.
+%%
+handle_call({connect, _, Node, _, _}, From, State) when Node =:= node() ->
     async_reply({reply, true, State}, From);
 handle_call({connect, Type, Node}, From, State) ->
     verbose({connect, Type, Node}, 1, State),
-    case ets:lookup(sys_dist, Node) of
-	[Conn] when Conn#connection.state =:= up ->
-	    async_reply({reply, true, State}, From);
-	[Conn] when Conn#connection.state =:= pending ->
-	    Waiting = Conn#connection.waiting,
-	    ets:insert(sys_dist, Conn#connection{waiting = [From|Waiting]}),
-	    {noreply, State};
-	[Conn] when Conn#connection.state =:= up_pending ->
-	    Waiting = Conn#connection.waiting,
-	    ets:insert(sys_dist, Conn#connection{waiting = [From|Waiting]}),
-	    {noreply, State};
-	_ ->
-	    case setup(Node,Type,From,State) of
-		{ok, SetupPid} ->
-		    Owners = [{SetupPid, Node} | State#state.conn_owners],
-		    {noreply,State#state{conn_owners=Owners}};
-		_Error  ->
-		    ?connect_failure(Node, {setup_call, failed, _Error}),
-		    async_reply({reply, false, State}, From)
-	    end
-    end;
+    ConnLookup = ets:lookup(sys_dist, Node),
+    R = case (catch erts_internal:new_connection(Node)) of
+            {Nr,_DHandle}=ConnId when is_integer(Nr) ->
+                do_explicit_connect(ConnLookup, Type, Node, ConnId, From, State);
+                    
+            _Error ->
+                error_logger:error_msg("~n** Cannot get connection id for node ~w~n",
+                                       [Node]),
+                {reply, false, State}                    
+        end,
+    return_call(R, From);
+            
 
 %%
 %% Close the connection to Node.
@@ -634,6 +694,26 @@ terminate(_Reason, State) ->
 %% ------------------------------------------------------------
 
 %%
+%% Asynchronous auto connect request
+%%
+handle_info({auto_connect,Node, Nr, DHandle}, State) ->
+    verbose({auto_connect, Node, Nr, DHandle}, 1, State),
+    ConnId = {Nr, DHandle},
+    NewState =
+        case do_auto_connect(normal, Node, ConnId, false, noreply, State) of
+            {noreply, S} ->           %% Pending connection
+                S;
+
+            {reply, true, S} ->  %% Already connected
+                S;
+
+            {reply, false, S} -> %% Connection refused
+                erts_internal:abort_connection(Node, ConnId),
+                S
+        end,
+    {noreply, NewState};
+
+%%
 %% accept a new connection.
 %%
 handle_info({accept,AcceptPid,Socket,Family,Proto}, State) ->
@@ -713,14 +793,23 @@ handle_info({AcceptPid, {accept_pending,MyNode,Node,Address,Type}}, State) ->
 	    AcceptPid ! {self(), {accept_pending, already_pending}},
 	    {noreply, State};
 	_ ->
-	    ets:insert(sys_dist, #connection{node = Node,
-					     state = pending,
-					     owner = AcceptPid,
-					     address = Address,
-					     type = Type}),
-	    AcceptPid ! {self(),{accept_pending,ok}},
-	    Owners = [{AcceptPid,Node} | State#state.conn_owners],
-	    {noreply, State#state{conn_owners = Owners}}
+            case (catch erts_internal:new_connection(Node)) of
+                {Nr,_DHandle}=ConnId when is_integer(Nr) ->
+                    ets:insert(sys_dist, #connection{node = Node,
+                                                     conn_id = ConnId,
+                                                     state = pending,
+                                                     owner = AcceptPid,
+                                                     address = Address,
+                                                     type = Type}),
+                    AcceptPid ! {self(),{accept_pending,ok}},
+                    Owners = [{AcceptPid,Node} | State#state.conn_owners],
+                    {noreply, State#state{conn_owners = Owners}};
+
+                _ ->
+                    error_logger:error_msg("~n** Cannot get connection id for node ~w~n",
+                                           [Node]),
+                    AcceptPid ! {self(),{accept_pending,nok_pending}}
+            end
     end;
 
 handle_info({SetupPid, {is_pending, Node}}, State) ->
@@ -906,6 +995,7 @@ pending_nodedown(Conn, Node, Type, State) ->
     % Don't bar connections that have never been alive
     %mark_sys_dist_nodedown(Node),
     % - instead just delete the node:
+    erts_internal:abort_connection(Node, Conn#connection.conn_id),
     ets:delete(sys_dist, Node),
     reply_waiting(Node,Conn#connection.waiting, false),
     case Type of
@@ -920,7 +1010,9 @@ up_pending_nodedown(Conn, Node, _Reason, _Type, State) ->
     AcceptPid = Conn#connection.pending_owner,
     Owners = State#state.conn_owners,
     Pend = lists:keydelete(AcceptPid, 1, State#state.pend_owners),
+    erts_internal:abort_connection(Node, Conn#connection.conn_id),
     Conn1 = Conn#connection { owner = AcceptPid,
+                              conn_id = erts_internal:new_connection(Node),
 			      pending_owner = undefined,
 			      state = pending },
     ets:insert(sys_dist, Conn1),
@@ -928,15 +1020,16 @@ up_pending_nodedown(Conn, Node, _Reason, _Type, State) ->
     State#state{conn_owners = [{AcceptPid,Node}|Owners], pend_owners = Pend}.
 
 
-up_nodedown(_Conn, Node, _Reason, Type, State) ->
-    mark_sys_dist_nodedown(Node),
+up_nodedown(Conn, Node, _Reason, Type, State) ->
+    mark_sys_dist_nodedown(Conn, Node),
     case Type of
 	normal -> ?nodedown(Node, State);
 	_ -> ok
     end,
     State.
 
-mark_sys_dist_nodedown(Node) ->
+mark_sys_dist_nodedown(Conn, Node) ->
+    erts_internal:abort_connection(Node, Conn#connection.conn_id),
     case application:get_env(kernel, dist_auto_connect) of
 	{ok, once} ->
 	    ets:insert(sys_dist, #barred_connection{node = Node});
@@ -1179,15 +1272,8 @@ spawn_func(_,{From,Tag},M,F,A,Gleader) ->
 %% Set up connection to a new node.
 %% -----------------------------------------------------------
 
-setup(Node,Type,From,State) ->
-    Allowed = State#state.allowed,
-    case lists:member(Node, Allowed) of
-	false when Allowed =/= [] ->
-	    error_msg("** Connection attempt with "
-		      "disallowed node ~w ** ~n", [Node]),
-	    {error, bad_node};
-	_ ->
-	    case select_mod(Node, State#state.listen) of
+setup(ConnLookup, Node,ConnId,Type,From,State) ->
+    case setup_check(ConnLookup, Node, ConnId, State) of
 		{ok, L} ->
 		    Mod = L#listen.module,
 		    LAddr = L#listen.address,
@@ -1200,18 +1286,45 @@ setup(Node,Type,From,State) ->
 		    Addr = LAddr#net_address {
 					      address = undefined,
 					      host = undefined },
+                    Waiting = case From of
+                                  noreply -> [];
+                                  _ -> [From]
+                              end,
 		    ets:insert(sys_dist, #connection{node = Node,
+                                                     conn_id = ConnId,
 						     state = pending,
 						     owner = Pid,
-						     waiting = [From],
+						     waiting = Waiting,
 						     address = Addr,
 						     type = normal}),
 		    {ok, Pid};
 		Error ->
 		    Error
-	    end
     end.
 
+setup_check(ConnLookup, Node, ConnId, State) ->
+    Allowed = State#state.allowed,    
+    case lists:member(Node, Allowed) of
+	false when Allowed =/= [] ->
+	    error_msg("** Connection attempt with "
+		      "disallowed node ~w ** ~n", [Node]),
+	    {error, bad_node};
+       _ ->
+            case verify_new_conn_id(ConnLookup, ConnId) of
+                false ->
+                    error_msg("** Connection attempt to ~w with "
+                              "bad connection id ~w ** ~n", [Node, ConnId]),
+                    {error, bad_conn_id};
+                true ->
+                    case select_mod(Node, State#state.listen) of
+                        {ok, _L}=OK -> OK;
+                        Error -> Error
+                    end
+            end
+    end.                    
+
+    
+
 %%
 %% Find a module that is willing to handle connection setup to Node
 %%
@@ -1652,6 +1765,11 @@ verbose(_, _, _) ->
 getnode(P) when is_pid(P) -> node(P);
 getnode(P) -> P.
 
+return_call({noreply, _State}=R, _From) ->
+    R;
+return_call(R, From) ->
+    async_reply(R, From).
+
 async_reply({reply, Msg, State}, From) ->
     async_gen_server_reply(From, Msg),
     {noreply, State}.
diff --git a/lib/kernel/src/os.erl b/lib/kernel/src/os.erl
index 209899d587..b5f19d4b99 100644
--- a/lib/kernel/src/os.erl
+++ b/lib/kernel/src/os.erl
@@ -25,6 +25,8 @@
 
 -include("file.hrl").
 
+-export_type([env_var_name/0, env_var_value/0, env_var_name_value/0, command_input/0]).
+
 %%% BIFs
 
 -export([getenv/0, getenv/1, getenv/2, getpid/0,
@@ -32,21 +34,29 @@
          putenv/2, set_signal/2, system_time/0, system_time/1,
 	 timestamp/0, unsetenv/1]).
 
--spec getenv() -> [string()].
+-type env_var_name() :: nonempty_string().
+
+-type env_var_value() :: string().
+
+-type env_var_name_value() :: nonempty_string().
+
+-type command_input() :: atom() | io_lib:chars().
+
+-spec getenv() -> [env_var_name_value()].
 
 getenv() -> erlang:nif_error(undef).
 
 -spec getenv(VarName) -> Value | false when
-      VarName :: string(),
-      Value :: string().
+      VarName :: env_var_name(),
+      Value :: env_var_value().
 
 getenv(_) ->
     erlang:nif_error(undef).
 
 -spec getenv(VarName, DefaultValue) -> Value when
-      VarName :: string(),
-      DefaultValue :: string(),
-      Value :: string().
+      VarName :: env_var_name(),
+      DefaultValue :: env_var_value(),
+      Value :: env_var_value().
 
 getenv(VarName, DefaultValue) ->
     case os:getenv(VarName) of
@@ -75,8 +85,8 @@ perf_counter(Unit) ->
       erlang:convert_time_unit(os:perf_counter(), perf_counter, Unit).
 
 -spec putenv(VarName, Value) -> true when
-      VarName :: string(),
-      Value :: string().
+      VarName :: env_var_name(),
+      Value :: env_var_value().
 
 putenv(_, _) ->
     erlang:nif_error(undef).
@@ -99,7 +109,7 @@ timestamp() ->
     erlang:nif_error(undef).
 
 -spec unsetenv(VarName) -> true when
-      VarName :: string().
+      VarName :: env_var_name().
 
 unsetenv(_) ->
     erlang:nif_error(undef).
@@ -232,10 +242,9 @@ extensions() ->
 
 %% Executes the given command in the default shell for the operating system.
 -spec cmd(Command) -> string() when
-      Command :: atom() | io_lib:chars().
+      Command :: os:command_input().
 cmd(Cmd) ->
-    validate(Cmd),
-    {SpawnCmd, SpawnOpts, SpawnInput, Eot} = mk_cmd(os:type(), Cmd),
+    {SpawnCmd, SpawnOpts, SpawnInput, Eot} = mk_cmd(os:type(), validate(Cmd)),
     Port = open_port({spawn, SpawnCmd}, [binary, stderr_to_stdout,
                                          stream, in, hide | SpawnOpts]),
     MonRef = erlang:monitor(port, Port),
@@ -255,8 +264,6 @@ mk_cmd({win32,Wtype}, Cmd) ->
                   {Cspec,_} -> lists:concat([Cspec," /c",Cmd])
               end,
     {Command, [], [], <<>>};
-mk_cmd(OsType,Cmd) when is_atom(Cmd) ->
-    mk_cmd(OsType, atom_to_list(Cmd));
 mk_cmd(_,Cmd) ->
     %% Have to send command in like this in order to make sh commands like
     %% cd and ulimit available
@@ -279,17 +286,33 @@ mk_cmd(_,Cmd) ->
      <<$\^D>>}.
 
 validate(Atom) when is_atom(Atom) ->
-    ok;
+    validate(atom_to_list(Atom));
 validate(List) when is_list(List) ->
-    validate1(List).
+    case validate1(List) of
+        false ->
+            List;
+        true -> 
+            %% Had zeros at end; remove them...
+            string:trim(List, trailing, [0])
+    end.
 
-validate1([C|Rest]) when is_integer(C) ->
+validate1([0|Rest]) ->
+    validate2(Rest);
+validate1([C|Rest]) when is_integer(C), C > 0 ->
     validate1(Rest);
 validate1([List|Rest]) when is_list(List) ->
-    validate1(List),
-    validate1(Rest);
+    validate1(List) or validate1(Rest);
 validate1([]) ->
-    ok.
+    false.
+
+%% Ensure that the rest is zero only...
+validate2([]) ->
+    true;
+validate2([0|Rest]) ->
+    validate2(Rest);
+validate2([List|Rest]) when is_list(List) ->
+    validate2(List),
+    validate2(Rest).
 
 get_data(Port, MonRef, Eot, Sofar) ->
     receive
diff --git a/lib/kernel/src/raw_file_io.erl b/lib/kernel/src/raw_file_io.erl
new file mode 100644
index 0000000000..e3c07c8f78
--- /dev/null
+++ b/lib/kernel/src/raw_file_io.erl
@@ -0,0 +1,75 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(raw_file_io).
+
+-export([open/2]).
+
+open(Filename, Modes) ->
+    %% Layers are applied in this order, and the listed modules will call this
+    %% function again as necessary. eg. a raw compressed delayed file in list
+    %% mode will walk through [_list -> _compressed -> _delayed -> _raw].
+    ModuleOrder = [{raw_file_io_list, fun match_list/1},
+                   {raw_file_io_compressed, fun match_compressed/1},
+                   {raw_file_io_delayed, fun match_delayed/1},
+                   {raw_file_io_raw, fun match_raw/1}],
+    open_1(ModuleOrder, Filename, add_implicit_modes(Modes)).
+open_1([], _Filename, _Modes) ->
+    error(badarg);
+open_1([{Module, Match} | Rest], Filename, Modes) ->
+    case lists:any(Match, Modes) of
+        true ->
+            {Options, ChildModes} =
+                lists:partition(fun(Mode) -> Match(Mode) end, Modes),
+            Module:open_layer(Filename, ChildModes, Options);
+        false ->
+            open_1(Rest, Filename, Modes)
+    end.
+
+%% 'read' and 'list' mode are enabled unless disabled by another option, so
+%% we'll explicitly add them to avoid duplicating this logic in child layers.
+add_implicit_modes(Modes0) ->
+    Modes1 = add_unless_matched(Modes0, fun match_writable/1, read),
+    add_unless_matched(Modes1, fun match_binary/1, list).
+add_unless_matched(Modes, Match, Default) ->
+    case lists:any(Match, Modes) of
+        false -> [Default | Modes];
+        true -> Modes
+    end.
+
+match_list(list) -> true;
+match_list(_Other) -> false.
+
+match_compressed(compressed) -> true;
+match_compressed(_Other) -> false.
+
+match_delayed({delayed_write, _Size, _Timeout}) -> true;
+match_delayed(delayed_write) -> true;
+match_delayed(_Other) -> false.
+
+match_raw(raw) -> true;
+match_raw(_Other) -> false.
+
+match_writable(write) -> true;
+match_writable(append) -> true;
+match_writable(exclusive) -> true;
+match_writable(_Other) -> false.
+
+match_binary(binary) -> true;
+match_binary(_Other) -> false.
diff --git a/lib/kernel/src/raw_file_io_compressed.erl b/lib/kernel/src/raw_file_io_compressed.erl
new file mode 100644
index 0000000000..d5ab042d25
--- /dev/null
+++ b/lib/kernel/src/raw_file_io_compressed.erl
@@ -0,0 +1,134 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(raw_file_io_compressed).
+
+-export([close/1, sync/1, datasync/1, truncate/1, advise/4, allocate/3,
+         position/2, write/2, pwrite/2, pwrite/3,
+         read_line/1, read/2, pread/2, pread/3]).
+
+%% OTP internal.
+-export([ipread_s32bu_p32bu/3, sendfile/8]).
+
+-export([open_layer/3]).
+
+-include("file_int.hrl").
+
+open_layer(Filename, Modes, Options) ->
+    IsAppend = lists:member(append, Modes),
+    IsDeflate = lists:member(write, Modes),
+    IsInflate = lists:member(read, Modes),
+    if
+        IsDeflate, IsInflate; IsAppend ->
+            {error, einval};
+        IsDeflate, not IsInflate ->
+            start_server_module(raw_file_io_deflate, Filename, Modes, Options);
+        IsInflate ->
+            start_server_module(raw_file_io_inflate, Filename, Modes, Options)
+    end.
+
+start_server_module(Module, Filename, Modes, Options) ->
+    Secret = make_ref(),
+    case gen_statem:start(Module, {self(), Secret, Options}, []) of
+        {ok, Pid} -> open_next_layer(Pid, Secret, Filename, Modes);
+        Other -> Other
+    end.
+
+open_next_layer(Pid, Secret, Filename, Modes) ->
+    case gen_statem:call(Pid, {'$open', Secret, Filename, Modes}, infinity) of
+        ok ->
+            PublicFd = #file_descriptor{
+                module = raw_file_io_compressed, data = {self(), Pid} },
+            {ok, PublicFd};
+        Other -> Other
+    end.
+
+close(Fd) ->
+    wrap_call(Fd, [close]).
+
+sync(Fd) ->
+    wrap_call(Fd, [sync]).
+datasync(Fd) ->
+    wrap_call(Fd, [datasync]).
+
+truncate(Fd) ->
+    wrap_call(Fd, [truncate]).
+
+advise(Fd, Offset, Length, Advise) ->
+    wrap_call(Fd, [advise, Offset, Length, Advise]).
+allocate(Fd, Offset, Length) ->
+    wrap_call(Fd, [allocate, Offset, Length]).
+
+position(Fd, Mark) ->
+    wrap_call(Fd, [position, Mark]).
+
+write(Fd, IOData) ->
+    try
+        CompactedData = erlang:iolist_to_iovec(IOData),
+        wrap_call(Fd, [write, CompactedData])
+    catch
+        error:badarg -> {error, badarg}
+    end.
+
+pwrite(Fd, Offset, IOData) ->
+    try
+        CompactedData = erlang:iolist_to_iovec(IOData),
+        wrap_call(Fd, [pwrite, Offset, CompactedData])
+    catch
+        error:badarg -> {error, badarg}
+    end.
+pwrite(Fd, LocBytes) ->
+    try
+        CompactedLocBytes =
+            [ {Offset, erlang:iolist_to_iovec(IOData)} ||
+              {Offset, IOData} <- LocBytes ],
+        wrap_call(Fd, [pwrite, CompactedLocBytes])
+    catch
+        error:badarg -> {error, badarg}
+    end.
+
+read_line(Fd) ->
+    wrap_call(Fd, [read_line]).
+read(Fd, Size) ->
+    wrap_call(Fd, [read, Size]).
+pread(Fd, Offset, Size) ->
+    wrap_call(Fd, [pread, Offset, Size]).
+pread(Fd, LocNums) ->
+    wrap_call(Fd, [pread, LocNums]).
+
+ipread_s32bu_p32bu(Fd, Offset, MaxSize) ->
+    wrap_call(Fd, [ipread_s32bu_p32bu, Offset, MaxSize]).
+
+sendfile(_,_,_,_,_,_,_,_) ->
+    {error, enotsup}.
+
+wrap_call(Fd, Command) ->
+    {_Owner, Pid} = get_fd_data(Fd),
+    try gen_statem:call(Pid, Command, infinity) of
+        Result -> Result
+    catch
+        exit:{noproc, _StackTrace} -> {error, einval}
+    end.
+
+get_fd_data(#file_descriptor{ data = Data }) ->
+    {Owner, _ServerPid} = Data,
+    case self() of
+        Owner -> Data;
+        _ -> error(not_on_controlling_process)
+    end.
diff --git a/lib/kernel/src/raw_file_io_deflate.erl b/lib/kernel/src/raw_file_io_deflate.erl
new file mode 100644
index 0000000000..acfc546743
--- /dev/null
+++ b/lib/kernel/src/raw_file_io_deflate.erl
@@ -0,0 +1,159 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(raw_file_io_deflate).
+
+-behavior(gen_statem).
+
+-export([init/1, callback_mode/0, terminate/3]).
+-export([opening/3, opened/3]).
+
+-include("file_int.hrl").
+
+-define(GZIP_WBITS, 16 + 15).
+
+callback_mode() -> state_functions.
+
+init({Owner, Secret, [compressed]}) ->
+    Monitor = monitor(process, Owner),
+    Z = zlib:open(),
+    ok = zlib:deflateInit(Z, default, deflated, ?GZIP_WBITS, 8, default),
+    Data =
+        #{ owner => Owner,
+           monitor => Monitor,
+           secret => Secret,
+           position => 0,
+           zlib => Z },
+    {ok, opening, Data}.
+
+opening({call, From}, {'$open', Secret, Filename, Modes}, #{ secret := Secret } = Data) ->
+    case raw_file_io:open(Filename, Modes) of
+        {ok, PrivateFd} ->
+            NewData = Data#{ handle => PrivateFd },
+            {next_state, opened, NewData, [{reply, From, ok}]};
+        Other ->
+            {stop_and_reply, normal, [{reply, From, Other}]}
+    end;
+opening(_Event, _Contents, _Data) ->
+    {keep_state_and_data, [postpone]}.
+
+%%
+
+opened(info, {'DOWN', Monitor, process, _Owner, Reason}, #{ monitor := Monitor } = Data) ->
+    if
+        Reason =/= kill -> flush_deflate_state(Data);
+        Reason =:= kill -> ignored
+    end,
+    {stop, shutdown};
+
+opened(info, _Message, _Data) ->
+    keep_state_and_data;
+
+opened({call, {Owner, _Tag} = From}, [close], #{ owner := Owner } = Data) ->
+    #{ handle := PrivateFd } = Data,
+    Response =
+        case flush_deflate_state(Data) of
+            ok -> ?CALL_FD(PrivateFd, close, []);
+            Other -> Other
+        end,
+    {stop_and_reply, normal, [{reply, From, Response}]};
+
+opened({call, {Owner, _Tag} = From}, [position, Mark], #{ owner := Owner } = Data) ->
+    case position(Data, Mark) of
+        {ok, NewData, Result} ->
+            Response = {ok, Result},
+            {keep_state, NewData, [{reply, From, Response}]};
+        Other ->
+            {keep_state_and_data, [{reply, From, Other}]}
+    end;
+
+opened({call, {Owner, _Tag} = From}, [write, IOVec], #{ owner := Owner } = Data) ->
+    case write(Data, IOVec) of
+        {ok, NewData} -> {keep_state, NewData, [{reply, From, ok}]};
+        Other -> {keep_state_and_data, [{reply, From, Other}]}
+    end;
+
+opened({call, {Owner, _Tag} = From}, [read, _Size], #{ owner := Owner }) ->
+    Response = {error, ebadf},
+    {keep_state_and_data, [{reply, From, Response}]};
+
+opened({call, {Owner, _Tag} = From}, [read_line], #{ owner := Owner }) ->
+    Response = {error, ebadf},
+    {keep_state_and_data, [{reply, From, Response}]};
+
+opened({call, {Owner, _Tag} = From}, _Command, #{ owner := Owner }) ->
+    Response = {error, enotsup},
+    {keep_state_and_data, [{reply, From, Response}]};
+
+opened({call, _From}, _Command, _Data) ->
+    %% The client functions filter this out, so we'll crash if the user does
+    %% anything stupid on purpose.
+    {shutdown, protocol_violation};
+
+opened(_Event, _Request, _Data) ->
+    keep_state_and_data.
+
+write(Data, IOVec) ->
+    #{ handle := PrivateFd, position := Position, zlib := Z } = Data,
+    UncompressedSize = iolist_size(IOVec),
+    case ?CALL_FD(PrivateFd, write, [zlib:deflate(Z, IOVec)]) of
+        ok -> {ok, Data#{ position := (Position + UncompressedSize) }};
+        Other -> Other
+    end.
+
+%%
+%% We support "seeking" forward as long as it isn't relative to EOF.
+%%
+%% Seeking is a bit of a misnomer as it's really just compressing zeroes until
+%% we reach the desired point, but it has always behaved like this.
+%%
+
+position(Data, Mark) when is_atom(Mark) ->
+    position(Data, {Mark, 0});
+position(Data, Offset) when is_integer(Offset) ->
+    position(Data, {bof, Offset});
+position(Data, {bof, Offset}) when is_integer(Offset) ->
+    position_1(Data, Offset);
+position(Data, {cur, Offset}) when is_integer(Offset) ->
+    #{ position := Position } = Data,
+    position_1(Data, Position + Offset);
+position(_Data, {eof, Offset}) when is_integer(Offset) ->
+    {error, einval};
+position(_Data, _Any) ->
+    {error, badarg}.
+
+position_1(#{ position := Desired } = Data, Desired) ->
+    {ok, Data, Desired};
+position_1(#{ position := Current } = Data, Desired) when Current < Desired ->
+    BytesToWrite = min(Desired - Current, 4 bsl 20),
+    case write(Data, <<0:(BytesToWrite)/unit:8>>) of
+        {ok, NewData} -> position_1(NewData, Desired);
+        Other -> Other
+    end;
+position_1(#{ position := Current }, Desired) when Current > Desired ->
+    {error, einval}.
+
+flush_deflate_state(#{ handle := PrivateFd, zlib := Z }) ->
+    case ?CALL_FD(PrivateFd, write, [zlib:deflate(Z, [], finish)]) of
+        ok -> ok;
+        Other -> Other
+    end.
+
+terminate(_Reason, _State, _Data) ->
+    ok.
diff --git a/lib/kernel/src/raw_file_io_delayed.erl b/lib/kernel/src/raw_file_io_delayed.erl
new file mode 100644
index 0000000000..d2ad7550a1
--- /dev/null
+++ b/lib/kernel/src/raw_file_io_delayed.erl
@@ -0,0 +1,320 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(raw_file_io_delayed).
+
+-behavior(gen_statem).
+
+-export([close/1, sync/1, datasync/1, truncate/1, advise/4, allocate/3,
+         position/2, write/2, pwrite/2, pwrite/3,
+         read_line/1, read/2, pread/2, pread/3]).
+
+%% OTP internal.
+-export([ipread_s32bu_p32bu/3, sendfile/8]).
+
+-export([open_layer/3]).
+
+-export([init/1, callback_mode/0, terminate/3]).
+-export([opening/3, opened/3]).
+
+-include("file_int.hrl").
+
+open_layer(Filename, Modes, Options) ->
+    Secret = make_ref(),
+    case gen_statem:start(?MODULE, {self(), Secret, Options}, []) of
+        {ok, Pid} ->
+            gen_statem:call(Pid, {'$open', Secret, Filename, Modes}, infinity);
+        Other ->
+            Other
+    end.
+
+callback_mode() -> state_functions.
+
+init({Owner, Secret, Options}) ->
+    Monitor = monitor(process, Owner),
+    Defaults =
+        #{ owner => Owner,
+           monitor => Monitor,
+           secret => Secret,
+           timer => none,
+           pid => self(),
+           buffer => prim_buffer:new(),
+           delay_size => 64 bsl 10,
+           delay_time => 2000 },
+    Data = fill_delay_values(Defaults, Options),
+    {ok, opening, Data}.
+
+fill_delay_values(Data, []) ->
+    Data;
+fill_delay_values(Data, [{delayed_write, Size, Time} | Options]) ->
+    fill_delay_values(Data#{ delay_size => Size, delay_time => Time }, Options);
+fill_delay_values(Data, [_ | Options]) ->
+    fill_delay_values(Data, Options).
+
+opening({call, From}, {'$open', Secret, Filename, Modes}, #{ secret := Secret } = Data) ->
+    case raw_file_io:open(Filename, Modes) of
+        {ok, PrivateFd} ->
+            PublicData = maps:with([owner, buffer, delay_size, pid], Data),
+            PublicFd = #file_descriptor{ module = ?MODULE, data = PublicData },
+
+            NewData = Data#{ handle => PrivateFd },
+            Response = {ok, PublicFd},
+            {next_state, opened, NewData, [{reply, From, Response}]};
+        Other ->
+            {stop_and_reply, normal, [{reply, From, Other}]}
+    end;
+opening(_Event, _Contents, _Data) ->
+    {keep_state_and_data, [postpone]}.
+
+%%
+
+opened(info, {'$timed_out', Secret}, #{ secret := Secret } = Data) ->
+    %% If the user writes something at this exact moment, the flush will fail
+    %% and the timer won't reset on the next write since the buffer won't be
+    %% empty (Unless we collided on a flush). We therefore reset the timeout to
+    %% ensure that data won't sit idle for extended periods of time.
+    case try_flush_write_buffer(Data) of
+        busy -> gen_statem:cast(self(), '$reset_timeout');
+        ok -> ok
+    end,
+    {keep_state, Data#{ timer => none }, []};
+
+opened(info, {'DOWN', Monitor, process, _Owner, Reason}, #{ monitor := Monitor } = Data) ->
+    if
+        Reason =/= kill -> try_flush_write_buffer(Data);
+        Reason =:= kill -> ignored
+    end,
+    {stop, shutdown};
+
+opened(info, _Message, _Data) ->
+    keep_state_and_data;
+
+opened({call, {Owner, _Tag} = From}, [close], #{ owner := Owner } = Data) ->
+    case flush_write_buffer(Data) of
+        ok ->
+            #{ handle := PrivateFd } = Data,
+            Response = ?CALL_FD(PrivateFd, close, []),
+            {stop_and_reply, normal, [{reply, From, Response}]};
+        Other ->
+            {stop_and_reply, normal, [{reply, From, Other}]}
+    end;
+
+opened({call, {Owner, _Tag} = From}, '$wait', #{ owner := Owner }) ->
+    %% Used in write/2 to synchronize writes on lock conflicts.
+    {keep_state_and_data, [{reply, From, ok}]};
+
+opened({call, {Owner, _Tag} = From}, '$synchronous_flush', #{ owner := Owner } = Data) ->
+    cancel_flush_timeout(Data),
+    Response = flush_write_buffer(Data),
+    {keep_state_and_data, [{reply, From, Response}]};
+
+opened({call, {Owner, _Tag} = From}, Command, #{ owner := Owner } = Data) ->
+    Response =
+        case flush_write_buffer(Data) of
+            ok -> dispatch_command(Data, Command);
+            Other -> Other
+        end,
+    {keep_state_and_data, [{reply, From, Response}]};
+
+opened({call, _From}, _Command, _Data) ->
+    %% The client functions filter this out, so we'll crash if the user does
+    %% anything stupid on purpose.
+    {shutdown, protocol_violation};
+
+opened(cast, '$reset_timeout', #{ delay_time := Timeout, secret := Secret } = Data) ->
+    cancel_flush_timeout(Data),
+    Timer = erlang:send_after(Timeout, self(), {'$timed_out', Secret}),
+    {keep_state, Data#{ timer => Timer }, []};
+
+opened(cast, _Message, _Data) ->
+    {keep_state_and_data, []}.
+
+dispatch_command(Data, [Function | Args]) ->
+    #{ handle := Handle } = Data,
+    Module = Handle#file_descriptor.module,
+    apply(Module, Function, [Handle | Args]).
+
+cancel_flush_timeout(#{ timer := none }) ->
+    ok;
+cancel_flush_timeout(#{ timer := Timer }) ->
+    _ = erlang:cancel_timer(Timer, [{async, true}]),
+    ok.
+
+try_flush_write_buffer(#{ buffer := Buffer, handle := PrivateFd }) ->
+    case prim_buffer:try_lock(Buffer) of
+        acquired ->
+            flush_write_buffer_1(Buffer, PrivateFd),
+            prim_buffer:unlock(Buffer),
+            ok;
+        busy ->
+            busy
+    end.
+
+%% This is only safe to use when there is no chance of conflict with the owner
+%% process, or in other words, "during synchronous calls outside of the locked
+%% section of write/2"
+flush_write_buffer(#{ buffer := Buffer, handle := PrivateFd }) ->
+    acquired = prim_buffer:try_lock(Buffer),
+    Result = flush_write_buffer_1(Buffer, PrivateFd),
+    prim_buffer:unlock(Buffer),
+    Result.
+
+flush_write_buffer_1(Buffer, PrivateFd) ->
+    case prim_buffer:size(Buffer) of
+        Size when Size > 0 ->
+            ?CALL_FD(PrivateFd, write, [prim_buffer:read_iovec(Buffer, Size)]);
+        0 ->
+            ok
+    end.
+
+terminate(_Reason, _State, _Data) ->
+    ok.
+
+%% Client functions
+
+write(Fd, IOData) ->
+    try
+        enqueue_write(Fd, erlang:iolist_to_iovec(IOData))
+    catch
+        error:badarg -> {error, badarg}
+    end.
+enqueue_write(_Fd, []) ->
+    ok;
+enqueue_write(Fd, IOVec) ->
+    %% get_fd_data will reject everyone except the process that opened the Fd,
+    %% so we can't race with anyone except the wrapper process.
+    #{ delay_size := DelaySize,
+       buffer := Buffer,
+       pid := Pid } = get_fd_data(Fd),
+    case prim_buffer:try_lock(Buffer) of
+        acquired ->
+            %% (The wrapper process will exit without flushing if we're killed
+            %% while holding the lock).
+            enqueue_write_locked(Pid, Buffer, DelaySize, IOVec);
+        busy ->
+            %% This can only happen while we're processing a timeout in the
+            %% wrapper process, so we perform a bogus call to get a completion
+            %% notification before trying again.
+            gen_statem:call(Pid, '$wait'),
+            enqueue_write(Fd, IOVec)
+    end.
+enqueue_write_locked(Pid, Buffer, DelaySize, IOVec) ->
+    %% The synchronous operations (write, forced flush) are safe since we're
+    %% running on the only process that can fill the buffer; a timeout being
+    %% processed just before $synchronous_flush will cause the flush to nop,
+    %% and a timeout sneaking in just before a synchronous write won't do
+    %% anything since the buffer is guaranteed to be empty at that point.
+    BufSize = prim_buffer:size(Buffer),
+    case is_iovec_smaller_than(IOVec, DelaySize - BufSize) of
+        true when BufSize > 0 ->
+            prim_buffer:write(Buffer, IOVec),
+            prim_buffer:unlock(Buffer);
+        true ->
+            prim_buffer:write(Buffer, IOVec),
+            prim_buffer:unlock(Buffer),
+            gen_statem:cast(Pid, '$reset_timeout');
+        false when BufSize > 0 ->
+            prim_buffer:write(Buffer, IOVec),
+            prim_buffer:unlock(Buffer),
+            gen_statem:call(Pid, '$synchronous_flush');
+        false ->
+            prim_buffer:unlock(Buffer),
+            gen_statem:call(Pid, [write, IOVec])
+    end.
+
+%% iolist_size/1 will always look through the entire list to get a precise
+%% amount, which is pretty inefficient since we only need to know whether we've
+%% hit the buffer threshold or not.
+%%
+%% We only handle the binary case since write/2 forcibly translates input to
+%% erlang:iovec().
+is_iovec_smaller_than(IOVec, Max) ->
+    is_iovec_smaller_than_1(IOVec, Max, 0).
+is_iovec_smaller_than_1(_IOVec, Max, Acc) when Acc >= Max ->
+    false;
+is_iovec_smaller_than_1([], _Max, _Acc) ->
+    true;
+is_iovec_smaller_than_1([Binary | Rest], Max, Acc) when is_binary(Binary) ->
+    is_iovec_smaller_than_1(Rest, Max, Acc + byte_size(Binary)).
+
+close(Fd) ->
+    wrap_call(Fd, [close]).
+
+sync(Fd) ->
+    wrap_call(Fd, [sync]).
+datasync(Fd) ->
+    wrap_call(Fd, [datasync]).
+
+truncate(Fd) ->
+    wrap_call(Fd, [truncate]).
+
+advise(Fd, Offset, Length, Advise) ->
+    wrap_call(Fd, [advise, Offset, Length, Advise]).
+allocate(Fd, Offset, Length) ->
+    wrap_call(Fd, [allocate, Offset, Length]).
+
+position(Fd, Mark) ->
+    wrap_call(Fd, [position, Mark]).
+
+pwrite(Fd, Offset, IOData) ->
+    try
+        CompactedData = erlang:iolist_to_iovec(IOData),
+        wrap_call(Fd, [pwrite, Offset, CompactedData])
+    catch
+        error:badarg -> {error, badarg}
+    end.
+pwrite(Fd, LocBytes) ->
+    try
+        CompactedLocBytes =
+            [ {Offset, erlang:iolist_to_iovec(IOData)} ||
+              {Offset, IOData} <- LocBytes ],
+        wrap_call(Fd, [pwrite, CompactedLocBytes])
+    catch
+        error:badarg -> {error, badarg}
+    end.
+
+read_line(Fd) ->
+    wrap_call(Fd, [read_line]).
+read(Fd, Size) ->
+    wrap_call(Fd, [read, Size]).
+pread(Fd, Offset, Size) ->
+    wrap_call(Fd, [pread, Offset, Size]).
+pread(Fd, LocNums) ->
+    wrap_call(Fd, [pread, LocNums]).
+
+ipread_s32bu_p32bu(Fd, Offset, MaxSize) ->
+    wrap_call(Fd, [ipread_s32bu_p32bu, Offset, MaxSize]).
+
+sendfile(_,_,_,_,_,_,_,_) ->
+    {error, enotsup}.
+
+wrap_call(Fd, Command) ->
+    #{ pid := Pid } = get_fd_data(Fd),
+    try gen_statem:call(Pid, Command, infinity) of
+        Result -> Result
+    catch
+        exit:{noproc, _StackTrace} -> {error, einval}
+    end.
+
+get_fd_data(#file_descriptor{ data = Data }) ->
+    #{ owner := Owner } = Data,
+    case self() of
+        Owner -> Data;
+        _ -> error(not_on_controlling_process)
+    end.
diff --git a/lib/kernel/src/raw_file_io_inflate.erl b/lib/kernel/src/raw_file_io_inflate.erl
new file mode 100644
index 0000000000..7e9780310c
--- /dev/null
+++ b/lib/kernel/src/raw_file_io_inflate.erl
@@ -0,0 +1,261 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(raw_file_io_inflate).
+
+-behavior(gen_statem).
+
+-export([init/1, callback_mode/0, terminate/3]).
+-export([opening/3, opened_gzip/3, opened_passthrough/3]).
+
+-include("file_int.hrl").
+
+-define(INFLATE_CHUNK_SIZE, (1 bsl 10)).
+-define(GZIP_WBITS, (16 + 15)).
+
+callback_mode() -> state_functions.
+
+init({Owner, Secret, [compressed]}) ->
+    Monitor = monitor(process, Owner),
+    %% We're using the undocumented inflateInit/3 to open the stream in
+    %% 'reset mode', which resets the inflate state at the end of every stream,
+    %% allowing us to read concatenated gzip files.
+    Z = zlib:open(),
+    ok = zlib:inflateInit(Z, ?GZIP_WBITS, reset),
+    Data =
+        #{ owner => Owner,
+           monitor => Monitor,
+           secret => Secret,
+           position => 0,
+           buffer => prim_buffer:new(),
+           zlib => Z },
+    {ok, opening, Data}.
+
+%% The old driver fell back to plain reads if the file didn't start with the
+%% magic gzip bytes.
+choose_decompression_state(PrivateFd) ->
+    State =
+        case ?CALL_FD(PrivateFd, read, [2]) of
+            {ok, <<16#1F, 16#8B>>} -> opened_gzip;
+            _Other -> opened_passthrough
+        end,
+    {ok, 0} = ?CALL_FD(PrivateFd, position, [0]),
+    State.
+
+opening({call, From}, {'$open', Secret, Filename, Modes}, #{ secret := Secret } = Data) ->
+    case raw_file_io:open(Filename, Modes) of
+        {ok, PrivateFd} ->
+            NextState = choose_decompression_state(PrivateFd),
+            NewData = Data#{ handle => PrivateFd },
+            {next_state, NextState, NewData, [{reply, From, ok}]};
+        Other ->
+            {stop_and_reply, normal, [{reply, From, Other}]}
+    end;
+opening(_Event, _Contents, _Data) ->
+    {keep_state_and_data, [postpone]}.
+
+internal_close(From, Data) ->
+    #{ handle := PrivateFd } = Data,
+    Response = ?CALL_FD(PrivateFd, close, []),
+    {stop_and_reply, normal, [{reply, From, Response}]}.
+
+opened_passthrough(info, {'DOWN', Monitor, process, _Owner, _Reason}, #{ monitor := Monitor }) ->
+    {stop, shutdown};
+
+opened_passthrough(info, _Message, _Data) ->
+    keep_state_and_data;
+
+opened_passthrough({call, {Owner, _Tag} = From}, [close], #{ owner := Owner } = Data) ->
+    internal_close(From, Data);
+
+opened_passthrough({call, {Owner, _Tag} = From}, [Method | Args], #{ owner := Owner } = Data) ->
+    #{ handle := PrivateFd } = Data,
+    Response = ?CALL_FD(PrivateFd, Method, Args),
+    {keep_state_and_data, [{reply, From, Response}]};
+
+opened_passthrough({call, _From}, _Command, _Data) ->
+    %% The client functions filter this out, so we'll crash if the user does
+    %% anything stupid on purpose.
+    {shutdown, protocol_violation};
+
+opened_passthrough(_Event, _Request, _Data) ->
+    keep_state_and_data.
+
+%%
+
+opened_gzip(info, {'DOWN', Monitor, process, _Owner, _Reason}, #{ monitor := Monitor }) ->
+    {stop, shutdown};
+
+opened_gzip(info, _Message, _Data) ->
+    keep_state_and_data;
+
+opened_gzip({call, {Owner, _Tag} = From}, [close], #{ owner := Owner } = Data) ->
+    internal_close(From, Data);
+
+opened_gzip({call, {Owner, _Tag} = From}, [position, Mark], #{ owner := Owner } = Data) ->
+    case position(Data, Mark) of
+        {ok, NewData, Result} ->
+            Response = {ok, Result},
+            {keep_state, NewData, [{reply, From, Response}]};
+        Other ->
+            {keep_state_and_data, [{reply, From, Other}]}
+    end;
+
+opened_gzip({call, {Owner, _Tag} = From}, [read, Size], #{ owner := Owner } = Data) ->
+    case read(Data, Size) of
+        {ok, NewData, Result} ->
+            Response = {ok, Result},
+            {keep_state, NewData, [{reply, From, Response}]};
+        Other ->
+            {keep_state_and_data, [{reply, From, Other}]}
+    end;
+
+opened_gzip({call, {Owner, _Tag} = From}, [read_line], #{ owner := Owner } = Data) ->
+    case read_line(Data) of
+        {ok, NewData, Result} ->
+            Response = {ok, Result},
+            {keep_state, NewData, [{reply, From, Response}]};
+        Other ->
+            {keep_state_and_data, [{reply, From, Other}]}
+    end;
+
+opened_gzip({call, {Owner, _Tag} = From}, [write, _IOData], #{ owner := Owner }) ->
+    Response = {error, ebadf},
+    {keep_state_and_data, [{reply, From, Response}]};
+
+opened_gzip({call, {Owner, _Tag} = From}, _Request, #{ owner := Owner }) ->
+    Response = {error, enotsup},
+    {keep_state_and_data, [{reply, From, Response}]};
+
+opened_gzip({call, _From}, _Request, _Data) ->
+    %% The client functions filter this out, so we'll crash if the user does
+    %% anything stupid on purpose.
+    {shutdown, protocol_violation};
+
+opened_gzip(_Event, _Request, _Data) ->
+    keep_state_and_data.
+
+%%
+
+read(#{ buffer := Buffer } = Data, Size) ->
+    try read_1(Data, Buffer, prim_buffer:size(Buffer), Size) of
+        Result -> Result
+    catch
+        error:badarg -> {error, badarg};
+        error:_ -> {error, eio}
+    end.
+read_1(Data, Buffer, BufferSize, ReadSize) when BufferSize >= ReadSize ->
+    #{ position := Position } = Data,
+    Decompressed = prim_buffer:read(Buffer, ReadSize),
+    {ok, Data#{ position => (Position + ReadSize) }, Decompressed};
+read_1(Data, Buffer, BufferSize, ReadSize) when BufferSize < ReadSize ->
+    #{ handle := PrivateFd } = Data,
+    case ?CALL_FD(PrivateFd, read, [?INFLATE_CHUNK_SIZE]) of
+        {ok, Compressed} ->
+            #{ zlib := Z } = Data,
+            Uncompressed = erlang:iolist_to_iovec(zlib:inflate(Z, Compressed)),
+            prim_buffer:write(Buffer, Uncompressed),
+            read_1(Data, Buffer, prim_buffer:size(Buffer), ReadSize);
+        eof when BufferSize > 0 ->
+            read_1(Data, Buffer, BufferSize, BufferSize);
+        Other ->
+            Other
+    end.
+
+read_line(#{ buffer := Buffer } = Data) ->
+    try read_line_1(Data, Buffer, prim_buffer:find_byte_index(Buffer, $\n)) of
+        {ok, NewData, Decompressed} -> {ok, NewData, Decompressed};
+        Other -> Other
+    catch
+        error:badarg -> {error, badarg};
+        error:_ -> {error, eio}
+    end.
+
+read_line_1(Data, Buffer, not_found) ->
+    #{ handle := PrivateFd, zlib := Z } = Data,
+    case ?CALL_FD(PrivateFd, read, [?INFLATE_CHUNK_SIZE]) of
+        {ok, Compressed} ->
+            Uncompressed = erlang:iolist_to_iovec(zlib:inflate(Z, Compressed)),
+            prim_buffer:write(Buffer, Uncompressed),
+            read_line_1(Data, Buffer, prim_buffer:find_byte_index(Buffer, $\n));
+        eof ->
+            case prim_buffer:size(Buffer) of
+                Size when Size > 0 -> {ok, prim_buffer:read(Buffer, Size)};
+                Size when Size =:= 0 -> eof
+            end;
+        Error ->
+            Error
+    end;
+read_line_1(Data, Buffer, {ok, LFIndex}) ->
+    %% Translate CRLF into just LF, completely ignoring which encoding is used,
+    %% but treat the file position as including CR.
+    #{ position := Position } = Data,
+    NewData = Data#{ position => (Position + LFIndex + 1) },
+    CRIndex = (LFIndex - 1),
+    TranslatedLine =
+        case prim_buffer:read(Buffer, LFIndex + 1) of
+            <<Line:CRIndex/binary, "\r\n">> -> <<Line/binary, "\n">>;
+            Line -> Line
+        end,
+    {ok, NewData, TranslatedLine}.
+
+%%
+%% We support seeking in both directions as long as it isn't relative to EOF.
+%%
+%% Seeking backwards is extremely inefficient since we have to seek to the very
+%% beginning and then decompress up to the desired point.
+%%
+
+position(Data, Mark) when is_atom(Mark) ->
+    position(Data, {Mark, 0});
+position(Data, Offset) when is_integer(Offset) ->
+    position(Data, {bof, Offset});
+position(Data, {bof, Offset}) when is_integer(Offset) ->
+    position_1(Data, Offset);
+position(Data, {cur, Offset}) when is_integer(Offset) ->
+    #{ position := Position } = Data,
+    position_1(Data, Position + Offset);
+position(_Data, {eof, Offset}) when is_integer(Offset) ->
+    {error, einval};
+position(_Data, _Other) ->
+    {error, badarg}.
+
+position_1(_Data, Desired) when Desired < 0 ->
+    {error, einval};
+position_1(#{ position := Desired } = Data, Desired) ->
+    {ok, Data, Desired};
+position_1(#{ position := Current } = Data, Desired) when Current < Desired ->
+    case read(Data, min(Desired - Current, ?INFLATE_CHUNK_SIZE)) of
+        {ok, NewData, _Data} -> position_1(NewData, Desired);
+        eof -> {ok, Data, Current};
+        Other -> Other
+    end;
+position_1(#{ position := Current } = Data, Desired) when Current > Desired ->
+    #{ handle := PrivateFd, buffer := Buffer, zlib := Z } = Data,
+    case ?CALL_FD(PrivateFd, position, [bof]) of
+        {ok, 0} ->
+            ok = zlib:inflateReset(Z),
+            prim_buffer:wipe(Buffer),
+            position_1(Data#{ position => 0 }, Desired);
+        Other ->
+            Other
+    end.
+
+terminate(_Reason, _State, _Data) ->
+    ok.
diff --git a/lib/kernel/src/raw_file_io_list.erl b/lib/kernel/src/raw_file_io_list.erl
new file mode 100644
index 0000000000..2e16e63f0e
--- /dev/null
+++ b/lib/kernel/src/raw_file_io_list.erl
@@ -0,0 +1,128 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(raw_file_io_list).
+
+-export([close/1, sync/1, datasync/1, truncate/1, advise/4, allocate/3,
+         position/2, write/2, pwrite/2, pwrite/3,
+         read_line/1, read/2, pread/2, pread/3]).
+
+%% OTP internal.
+-export([ipread_s32bu_p32bu/3, sendfile/8]).
+
+-export([open_layer/3]).
+
+-include("file_int.hrl").
+
+open_layer(Filename, Modes, [list]) ->
+    case raw_file_io:open(Filename, [binary | Modes]) of
+        {ok, PrivateFd} -> {ok, make_public_fd(PrivateFd, Modes)};
+        Other -> Other
+    end.
+
+%% We can skip wrapping the file if it's write-only since only read operations
+%% are affected by list mode. Since raw_file_io fills in all implicit options
+%% for us, all we need to do is check whether 'read' is among them.
+make_public_fd(PrivateFd, Modes) ->
+    case lists:member(read, Modes) of
+        true -> #file_descriptor{ module = ?MODULE, data = PrivateFd };
+        false -> PrivateFd
+    end.
+
+close(Fd) ->
+    PrivateFd = Fd#file_descriptor.data,
+    ?CALL_FD(PrivateFd, close, []).
+
+sync(Fd) ->
+    PrivateFd = Fd#file_descriptor.data,
+    ?CALL_FD(PrivateFd, sync, []).
+datasync(Fd) ->
+    PrivateFd = Fd#file_descriptor.data,
+    ?CALL_FD(PrivateFd, datasync, []).
+
+truncate(Fd) ->
+    PrivateFd = Fd#file_descriptor.data,
+    ?CALL_FD(PrivateFd, truncate, []).
+
+advise(Fd, Offset, Length, Advise) ->
+    PrivateFd = Fd#file_descriptor.data,
+    ?CALL_FD(PrivateFd, advise, [Offset, Length, Advise]).
+allocate(Fd, Offset, Length) ->
+    PrivateFd = Fd#file_descriptor.data,
+    ?CALL_FD(PrivateFd, allocate, [Offset, Length]).
+
+position(Fd, Mark) ->
+    PrivateFd = Fd#file_descriptor.data,
+    ?CALL_FD(PrivateFd, position, [Mark]).
+
+write(Fd, IOData) ->
+    PrivateFd = Fd#file_descriptor.data,
+    ?CALL_FD(PrivateFd, write, [IOData]).
+
+pwrite(Fd, Offset, IOData) ->
+    PrivateFd = Fd#file_descriptor.data,
+    ?CALL_FD(PrivateFd, pwrite, [Offset, IOData]).
+pwrite(Fd, LocBytes) ->
+    PrivateFd = Fd#file_descriptor.data,
+    ?CALL_FD(PrivateFd, pwrite, [LocBytes]).
+
+read_line(Fd) ->
+    PrivateFd = Fd#file_descriptor.data,
+    case ?CALL_FD(PrivateFd, read_line, []) of
+        {ok, Binary} -> {ok, binary_to_list(Binary)};
+        Other -> Other
+    end.
+read(Fd, Size) ->
+    PrivateFd = Fd#file_descriptor.data,
+    case ?CALL_FD(PrivateFd, read, [Size]) of
+        {ok, Binary} -> {ok, binary_to_list(Binary)};
+        Other -> Other
+    end.
+pread(Fd, Offset, Size) ->
+    PrivateFd = Fd#file_descriptor.data,
+    case ?CALL_FD(PrivateFd, pread, [Offset, Size]) of
+        {ok, Binary} -> {ok, binary_to_list(Binary)};
+        Other -> Other
+    end.
+pread(Fd, LocNums) ->
+    PrivateFd = Fd#file_descriptor.data,
+    case ?CALL_FD(PrivateFd, pread, [LocNums]) of
+        {ok, LocResults} ->
+            TranslatedResults =
+                [ case Result of
+                      Result when is_binary(Result) -> binary_to_list(Result);
+                      eof -> eof
+                  end || Result <- LocResults ],
+            {ok, TranslatedResults};
+        Other -> Other
+    end.
+
+ipread_s32bu_p32bu(Fd, Offset, MaxSize) ->
+    PrivateFd = Fd#file_descriptor.data,
+    case ?CALL_FD(PrivateFd, ipread_s32bu_p32bu, [Offset, MaxSize]) of
+        {ok, {Size, Pointer, Binary}} when is_binary(Binary) ->
+            {ok, {Size, Pointer, binary_to_list(Binary)}};
+        Other ->
+            Other
+    end.
+
+sendfile(Fd, Dest, Offset, Bytes, ChunkSize, Headers, Trailers, Flags) ->
+    Args = [Dest, Offset, Bytes, ChunkSize, Headers, Trailers, Flags],
+    PrivateFd = Fd#file_descriptor.data,
+    ?CALL_FD(PrivateFd, sendfile, Args).
diff --git a/lib/kernel/src/raw_file_io_raw.erl b/lib/kernel/src/raw_file_io_raw.erl
new file mode 100644
index 0000000000..9a9fe78eb1
--- /dev/null
+++ b/lib/kernel/src/raw_file_io_raw.erl
@@ -0,0 +1,25 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(raw_file_io_raw).
+
+-export([open_layer/3]).
+
+open_layer(Filename, Modes, [raw]) ->
+    prim_file:open(Filename, [raw | Modes]).
diff --git a/lib/kernel/src/user.erl b/lib/kernel/src/user.erl
index a5cc7b0ec1..872e63ab53 100644
--- a/lib/kernel/src/user.erl
+++ b/lib/kernel/src/user.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2017. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -398,7 +398,7 @@ get_line(Prompt, Port, Q, Acc, Enc) ->
 		    get_line_bytes(Prompt, Port, Q, Acc, Bytes, Enc);
 		{Port, eof} ->
 		    put(eof, true),
-		    {ok, eof, []};
+		    {ok, eof, queue:new()};
                 {io_request,From,ReplyAs,{get_geometry,_}=Req} when is_pid(From) ->
                     do_io_request(Req, From, ReplyAs, Port, 
                                   queue:new()), 
@@ -615,7 +615,7 @@ get_chars(Prompt, M, F, Xa, Port, Q, State, Enc) ->
 		    get_chars_bytes(State, M, F, Xa, Port, Q, Bytes, Enc);
 		{Port, eof} ->
 		    put(eof, true),
-		    {ok, eof, []};
+		    {ok, eof, queue:new()};
 		%%{io_request,From,ReplyAs,Request} when is_pid(From) ->
 		%%    get_chars_req(Prompt, M, F, Xa, Port, queue:new(), State,
 		%%		  Request, From, ReplyAs);
diff --git a/lib/kernel/test/code_SUITE.erl b/lib/kernel/test/code_SUITE.erl
index 612f77149d..569753155f 100644
--- a/lib/kernel/test/code_SUITE.erl
+++ b/lib/kernel/test/code_SUITE.erl
@@ -1562,16 +1562,7 @@ on_load_trace_on_load(Config) ->
     erlang:trace_pattern(on_load, false, []),
     erlang:trace(self(), false, [call]),
 
-    %% WE GET TRACES FOR CALLS TO UNDEFINED FUNCTIONS ???
-    %% Remove filter when that is fixed.
-    Ms = lists:filter(fun({trace,Papa,call,
-                           {error_handler,undefined_function,
-                            [on_load_update_code,_,_]}})
-                         -> false;
-                         (_) -> true
-                      end,
-                      flush()),
-
+    Ms = flush(),
     [{trace, Papa, call, {on_load_update_code, a, []}},
      {trace, Papa, call, {on_load_update_code, b, [99]}},
      {trace, Papa, call, {on_load_update_code, c, []}}] = Ms,
diff --git a/lib/kernel/test/code_SUITE_data/upgrade_client.erl b/lib/kernel/test/code_SUITE_data/upgrade_client.erl
index faa18e1410..1c3c2def53 100644
--- a/lib/kernel/test/code_SUITE_data/upgrade_client.erl
+++ b/lib/kernel/test/code_SUITE_data/upgrade_client.erl
@@ -341,6 +341,7 @@ check_tracing_loop(N, MsgList) ->
 
 
 stop_tracing(Tracer) ->
+    erlang:trace_pattern({error_handler,undefined_function,3}, false, [global]),
     erlang:trace(self(), false, [call]),
     Tracer ! die_please,
     receive
diff --git a/lib/kernel/test/disk_log_SUITE.erl b/lib/kernel/test/disk_log_SUITE.erl
index fe2fc778f2..7beaadb1d6 100644
--- a/lib/kernel/test/disk_log_SUITE.erl
+++ b/lib/kernel/test/disk_log_SUITE.erl
@@ -89,8 +89,6 @@
 	 dist_terminate/1, dist_accessible/1, dist_deadlock/1,
          dist_open2/1, other_groups/1,
 
-         evil/1,
-
          otp_6278/1, otp_10131/1]).
 
 -export([head_fun/1, hf/0, lserv/1, 
@@ -123,7 +121,7 @@
 	[halt_int, wrap_int, halt_ext, wrap_ext, read_mode, head,
 	 notif, new_idx_vsn, reopen, block, unblock, open, close,
 	 error, chunk, truncate, many_users, info, change_size,
-	 change_attribute, distribution, evil, otp_6278, otp_10131]).
+	 change_attribute, distribution, otp_6278, otp_10131]).
 
 %% These test cases should be skipped if the VxWorks card is 
 %% configured without NFS cache.
@@ -149,7 +147,7 @@ all() ->
      {group, open}, {group, close}, {group, error}, chunk,
      truncate, many_users, {group, info},
      {group, change_size}, change_attribute,
-     {group, distribution}, evil, otp_6278, otp_10131].
+     {group, distribution}, otp_6278, otp_10131].
 
 groups() -> 
     [{halt_int, [], [halt_int_inf, {group, halt_int_sz}]},
@@ -4676,119 +4674,6 @@ other_groups(Conf) when is_list(Conf) ->
 
     ok.
 
--define(MAX, ?MAX_FWRITE_CACHE). % as in disk_log_1.erl
-%% Evil cases such as closed file descriptor port.
-evil(Conf) when is_list(Conf) ->
-    Dir = ?privdir(Conf),
-    File = filename:join(Dir, "n.LOG"),
-    Log = n,
-
-    %% Not a very thorough test.
-
-    ok = setup_evil_filled_cache_wrap(Log, Dir),
-    {error, {file_error,_,einval}} = disk_log:log(Log, apa),
-    ok = disk_log:close(Log),
-
-    ok = setup_evil_filled_cache_halt(Log, Dir),
-    {error, {file_error,_,einval}} = disk_log:truncate(Log, apa),
-    ok = stop_evil(Log),
-
-    %% White box test. 
-    file:delete(File),
-    Ports0 = erlang:ports(),
-    {ok, Log} = disk_log:open([{name,Log},{file,File},{type,halt},
-                                     {size,?MAX+50},{format,external}]),
-    [Fd] = erlang:ports() -- Ports0,
-    {B,_} = x_mk_bytes(30),
-    ok = disk_log:blog(Log, <<0:(?MAX-1)/unit:8>>),
-    exit(Fd, kill),
-    {error, {file_error,_,einval}} = disk_log:blog_terms(Log, [B,B]),
-    ok= disk_log:close(Log),
-    file:delete(File),
-
-    ok = setup_evil_wrap(Log, Dir),
-    {error, {file_error,_,einval}} = disk_log:close(Log),
-
-    ok = setup_evil_wrap(Log, Dir),
-    {error, {file_error,_,einval}} = disk_log:log(Log, apa),
-    ok = stop_evil(Log),
-
-    ok = setup_evil_halt(Log, Dir),
-    {error, {file_error,_,einval}} = disk_log:log(Log, apa),
-    ok = stop_evil(Log),
-
-    ok = setup_evil_wrap(Log, Dir),
-    {error, {file_error,_,einval}} = disk_log:reopen(Log, apa),
-    {error, {file_error,_,einval}} = disk_log:reopen(Log, apa),
-    ok = stop_evil(Log),
-
-    ok = setup_evil_wrap(Log, Dir),
-    {error, {file_error,_,einval}} = disk_log:reopen(Log, apa),
-    ok = stop_evil(Log),
-
-    ok = setup_evil_wrap(Log, Dir),
-    {error, {file_error,_,einval}} = disk_log:inc_wrap_file(Log),
-    ok = stop_evil(Log),
-
-    ok = setup_evil_wrap(Log, Dir),
-    {error, {file_error,_,einval}} = disk_log:chunk(Log, start),
-    ok = stop_evil(Log),
-
-    ok = setup_evil_wrap(Log, Dir),
-    {error, {file_error,_,einval}} = disk_log:truncate(Log),
-    ok = stop_evil(Log),
-
-    ok = setup_evil_wrap(Log, Dir),
-    {error, {file_error,_,einval}} = disk_log:chunk_step(Log, start, 1),
-    ok = stop_evil(Log),
-
-    io:format("messages: ~p~n", [erlang:process_info(self(), messages)]),
-    del(File, 2),
-    file:delete(File),
-    ok.
-
-setup_evil_wrap(Log, Dir) ->
-    setup_evil(Log, [{type,wrap},{size,{100,2}}], Dir).
-
-setup_evil_halt(Log, Dir) ->
-    setup_evil(Log, [{type,halt},{size,10000}], Dir).
-
-setup_evil(Log, Args, Dir) ->
-    File = filename:join(Dir, lists:concat([Log, ".LOG"])),
-    file:delete(File),
-    del(File, 2),
-    ok = disk_log:start(),
-    Ports0 = erlang:ports(),
-    {ok, Log} = disk_log:open([{name,Log},{file,File} | Args]),
-    [Fd] = erlang:ports() -- Ports0,
-    exit(Fd, kill),
-    ok = disk_log:log_terms(n, [<<0:10/unit:8>>]),
-    timer:sleep(2500), % TIMEOUT in disk_log_1.erl is 2000
-    ok.
-
-stop_evil(Log) ->
-    {error, _} = disk_log:close(Log),
-    ok.
-
-setup_evil_filled_cache_wrap(Log, Dir) ->
-    setup_evil_filled_cache(Log, [{type,wrap},{size,{?MAX,2}}], Dir).
-
-setup_evil_filled_cache_halt(Log, Dir) ->
-    setup_evil_filled_cache(Log, [{type,halt},{size,infinity}], Dir).
-
-%% The cache is filled, and the file descriptor port gone.
-setup_evil_filled_cache(Log, Args, Dir) ->
-    File = filename:join(Dir, lists:concat([Log, ".LOG"])),
-    file:delete(File),
-    del(File, 2),
-    ok = disk_log:start(),
-    Ports0 = erlang:ports(),
-    {ok, Log} = disk_log:open([{name,Log},{file,File} | Args]),
-    [Fd] = erlang:ports() -- Ports0,
-    ok = disk_log:log_terms(n, [<<0:?MAX/unit:8>>]),
-    exit(Fd, kill),
-    ok.
-
 %% OTP-6278. open/1 creates no status or crash report.
 otp_6278(Conf) when is_list(Conf) ->
     Dir = ?privdir(Conf),
diff --git a/lib/kernel/test/erl_distribution_wb_SUITE.erl b/lib/kernel/test/erl_distribution_wb_SUITE.erl
index 03aaee56b7..8256444bdc 100644
--- a/lib/kernel/test/erl_distribution_wb_SUITE.erl
+++ b/lib/kernel/test/erl_distribution_wb_SUITE.erl
@@ -61,10 +61,13 @@
 %% From R9 and forward extended references is compulsory
 %% From R10 and forward extended pids and ports are compulsory
 %% From R20 and forward UTF8 atoms are compulsory
+%% From R21 and forward NEW_FUN_TAGS is compulsory (no more tuple fallback {fun, ...})
 -define(COMPULSORY_DFLAGS, (?DFLAG_EXTENDED_REFERENCES bor
                             ?DFLAG_EXTENDED_PIDS_PORTS bor
-                            ?DFLAG_UTF8_ATOMS)).
+                            ?DFLAG_UTF8_ATOMS bor
+                            ?DFLAG_NEW_FUN_TAGS)).
 
+-define(PASS_THROUGH, $p).
 
 -define(shutdown(X), exit(X)).
 -define(int16(X), [((X) bsr 8) band 16#ff, (X) band 16#ff]).
@@ -674,15 +677,16 @@ build_rex_message(Cookie,OurName) ->
 %% Receive a distribution message    
 recv_message(Socket) ->
     case gen_tcp:recv(Socket, 0) of
+        {ok,[]} ->
+            recv_message(Socket);  %% a tick, ignore
 	{ok,Data} ->
 	    B0 = list_to_binary(Data),
-	    {_,B1} = erlang:split_binary(B0,1),
-	    Header = binary_to_term(B1),
-	    Siz = byte_size(term_to_binary(Header)),
-	    {_,B2} = erlang:split_binary(B1,Siz),
+	    <<?PASS_THROUGH, B1/binary>> = B0,
+	    {Header,Siz} = binary_to_term(B1,[used]),
+	    <<_:Siz/binary,B2/binary>> = B1,
 	    Message = case (catch binary_to_term(B2)) of
 			  {'EXIT', _} ->
-			      could_not_digest_message;
+			      {could_not_digest_message,B2};
 			  Other ->
 			      Other
 		      end,
diff --git a/lib/kernel/test/erl_prim_loader_SUITE.erl b/lib/kernel/test/erl_prim_loader_SUITE.erl
index b6417210b9..3502a4ad08 100644
--- a/lib/kernel/test/erl_prim_loader_SUITE.erl
+++ b/lib/kernel/test/erl_prim_loader_SUITE.erl
@@ -33,6 +33,7 @@
 	 primary_archive/1, virtual_dir_in_archive/1,
 	 get_modules/1]).
 
+-define(PRIM_FILE, prim_file).
 
 %%-----------------------------------------------------------------
 %% Test suite for erl_prim_loader. (Most code is run during system start/stop.)
@@ -461,7 +462,7 @@ primary_archive(Config) when is_list(Config) ->
     %% Set primary archive 
     ExpectedEbins = [Archive, DictDir ++ "/ebin", DummyDir ++ "/ebin"],
     io:format("ExpectedEbins: ~p\n", [ExpectedEbins]),
-    {ok, FileInfo} = prim_file:read_file_info(Archive),
+    {ok, FileInfo} = ?PRIM_FILE:read_file_info(Archive),
     {ok, Ebins} = rpc:call(Node, erl_prim_loader, set_primary_archive,
 			   [Archive, ArchiveBin, FileInfo,
 			    fun escript:parse_file/1]),
diff --git a/lib/kernel/test/file_SUITE.erl b/lib/kernel/test/file_SUITE.erl
index 119e1f24bb..0cb8087a76 100644
--- a/lib/kernel/test/file_SUITE.erl
+++ b/lib/kernel/test/file_SUITE.erl
@@ -39,6 +39,8 @@
 -define(FILE_FIN_PER_TESTCASE(Config), Config).
 -endif.
 
+-define(PRIM_FILE, prim_file).
+
 -module(?FILE_SUITE).
 
 -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
@@ -97,6 +99,12 @@
 
 -export([unicode_mode/1]).
 
+-export([volume_relative_paths/1]).
+
+-export([tiny_writes/1, tiny_writes_delayed/1,
+         large_writes/1, large_writes_delayed/1,
+         tiny_reads/1, tiny_reads_ahead/1]).
+
 %% Debug exports
 -export([create_file_slow/2, create_file/2, create_bin/2]).
 -export([verify_file/2, verify_bin/3]).
@@ -107,6 +115,8 @@
 -export([disc_free/1, memsize/0]).
 
 -include_lib("common_test/include/ct.hrl").
+-include_lib("common_test/include/ct_event.hrl").
+
 -include_lib("kernel/include/file.hrl").
 
 -define(THROW_ERROR(RES), throw({fail, ?LINE, RES})).
@@ -118,13 +128,13 @@ suite() ->
 
 all() -> 
     [unicode, altname, read_write_file, {group, dirs},
-     {group, files}, delete, rename, names, {group, errors},
-     {group, compression}, {group, links}, copy,
+     {group, files}, delete, rename, names, volume_relative_paths,
+     {group, errors}, {group, compression}, {group, links}, copy,
      delayed_write, read_ahead, segment_read, segment_write,
      ipread, pid2name, interleaved_read_write, otp_5814, otp_10852,
      large_file, large_write, read_line_1, read_line_2, read_line_3,
      read_line_4, standard_io, old_io_protocol,
-     unicode_mode
+     unicode_mode, {group, bench}
     ].
 
 groups() -> 
@@ -154,11 +164,19 @@ groups() ->
        write_compressed, compress_errors, catenated_gzips,
        compress_async_crash]},
      {links, [],
-      [make_link, read_link_info_for_non_link, symlinks]}].
+      [make_link, read_link_info_for_non_link, symlinks]},
+     {bench, [],
+      [tiny_writes, tiny_writes_delayed,
+       large_writes, large_writes_delayed,
+       tiny_reads, tiny_reads_ahead]}].
 
 init_per_group(_GroupName, Config) ->
     Config.
 
+end_per_group(bench, Config) ->
+    ScratchDir = proplists:get_value(priv_dir, Config),
+    file:delete(filename:join(ScratchDir, "benchmark_scratch_file")),
+    Config;
 end_per_group(_GroupName, Config) ->
     Config.
 
@@ -473,7 +491,7 @@ um_check_unicode(_Utf8Bin, {ok, _ListOrBin}, _, _UTF8_) ->
 um_filename(Bin, Dir, Options) when is_binary(Bin) ->
     um_filename(binary_to_list(Bin), Dir, Options);
 um_filename(Str = [_|_], Dir, Options) ->
-    Name = hd(string:tokens(Str, ":")),
+    Name = hd(string:lexemes(Str, ":")),
     Enc = atom_to_list(proplists:get_value(encoding, Options, latin1)),
     File = case lists:member(binary, Options) of
 	       true ->
@@ -638,6 +656,10 @@ cur_dir_0(Config) when is_list(Config) ->
 	    {ok,NewDirFiles} = ?FILE_MODULE:list_dir("."),
 	    true = lists:member(UncommonName,NewDirFiles),
 
+	    %% Ensure that we get the same result with a trailing slash; the
+	    %% APIs used on Windows will choke on them if passed directly.
+	    {ok,NewDirFiles} = ?FILE_MODULE:list_dir("./"),
+
 	    %% Delete the directory and return to the old current directory
 	    %% and check that the created file isn't there (too!)
 	    expect({error, einval}, {error, eacces}, 
@@ -690,10 +712,15 @@ win_cur_dir_1(_Config) ->
     %% Get the drive letter from the current directory,
     %% and try to get current directory for that drive.
 
-    [Drive,$:|_] = BaseDir,
-    {ok,BaseDir} = ?FILE_MODULE:get_cwd([Drive,$:]),
+    [CurDrive,$:|_] = BaseDir,
+    {ok,BaseDir} = ?FILE_MODULE:get_cwd([CurDrive,$:]),
     io:format("BaseDir = ~s\n", [BaseDir]),
 
+    %% We should error out on non-existent drives. Any reasonable system will
+    %% have at least one.
+    CurDirs = [?FILE_MODULE:get_cwd([Drive,$:]) || Drive <- lists:seq($A, $Z)],
+    lists:member({error,eaccess}, CurDirs),
+
     %% Unfortunately, there is no way to move away from the
     %% current drive as we can't use the "subst" command from
     %% a SSH connection. We can't test any more.
@@ -831,7 +858,7 @@ no_untranslatable_names() ->
     end.
 
 start_node(Name, Args) ->
-    [_,Host] = string:tokens(atom_to_list(node()), "@"),
+    [_,Host] = string:lexemes(atom_to_list(node()), "@"),
     ct:log("Trying to start ~w@~s~n", [Name,Host]),
     case test_server:start_node(Name, peer, [{args,Args}]) of
 	{error,Reason} ->
@@ -1019,6 +1046,23 @@ close(Config) when is_list(Config) ->
     Val = ?FILE_MODULE:close(Fd1),
     io:format("Second close gave: ~p",[Val]),
 
+    %% All operations on a closed raw file should EINVAL, even if they're not
+    %% supported on the current platform.
+    {ok,Fd2} = ?FILE_MODULE:open(Name, [read, write, raw]),
+    ok = ?FILE_MODULE:close(Fd2),
+
+    {error, einval} = ?FILE_MODULE:advise(Fd2, 5, 5, normal),
+    {error, einval} = ?FILE_MODULE:allocate(Fd2, 5, 5),
+    {error, einval} = ?FILE_MODULE:close(Fd2),
+    {error, einval} = ?FILE_MODULE:datasync(Fd2),
+    {error, einval} = ?FILE_MODULE:position(Fd2, 5),
+    {error, einval} = ?FILE_MODULE:pread(Fd2, 5, 1),
+    {error, einval} = ?FILE_MODULE:pwrite(Fd2, 5, "einval please"),
+    {error, einval} = ?FILE_MODULE:read(Fd2, 1),
+    {error, einval} = ?FILE_MODULE:sync(Fd2),
+    {error, einval} = ?FILE_MODULE:truncate(Fd2),
+    {error, einval} = ?FILE_MODULE:write(Fd2, "einval please"),
+
     [] = flush(),
     ok.
 
@@ -1132,8 +1176,8 @@ pread_write_test(File, Data) ->
 	   end,
     I = Size + 17,
     ok = ?FILE_MODULE:pwrite(File, 0, Data),
-    Res = ?FILE_MODULE:pread(File, 0, I),
-    {ok, Data} = Res,
+    {ok, Data} = ?FILE_MODULE:pread(File, 0, I),
+    {ok, [Data]} = ?FILE_MODULE:pread(File, [{0, I}]),
     eof = ?FILE_MODULE:pread(File, I, 1),
     ok = ?FILE_MODULE:pwrite(File, [{0, Data}, {I, Data}]),
     {ok, [Data, eof, Data]} =
@@ -2044,13 +2088,22 @@ names(Config) when is_list(Config) ->
     ok = ?FILE_MODULE:close(Fd2),
     {ok,Fd3} = ?FILE_MODULE:open(Name3,read),
     ok = ?FILE_MODULE:close(Fd3),
+
+    %% Now try the same on raw files.
+    {ok,Fd4} = ?FILE_MODULE:open(Name2, [read, raw]),
+    ok = ?FILE_MODULE:close(Fd4),
+    {ok,Fd4f} = ?FILE_MODULE:open(lists:flatten(Name2), [read, raw]),
+    ok = ?FILE_MODULE:close(Fd4f),
+    {ok,Fd5} = ?FILE_MODULE:open(Name3, [read, raw]),
+    ok = ?FILE_MODULE:close(Fd5),
+
     case length(Name1) > 255 of
 	true ->
 	    io:format("Path too long for an atom:\n\n~p\n", [Name1]);
 	false ->
 	    Name4 = list_to_atom(Name1),
-	    {ok,Fd4} = ?FILE_MODULE:open(Name4,read),
-	    ok = ?FILE_MODULE:close(Fd4)
+	    {ok,Fd6} = ?FILE_MODULE:open(Name4,read),
+	    ok = ?FILE_MODULE:close(Fd6)
     end,
 
     %% Try some path names
@@ -2074,6 +2127,22 @@ names(Config) when is_list(Config) ->
     [] = flush(),
     ok.
 
+volume_relative_paths(Config) when is_list(Config) ->
+    case os:type() of
+        {win32, _} ->
+            {ok, [Drive, $: | _]} = file:get_cwd(),
+            %% Relative to current device root.
+            {ok, RootInfo} = file:read_file_info([Drive, $:, $/]),
+            {ok, RootInfo} = file:read_file_info("/"),
+            %% Relative to current device directory.
+            {ok, DirContents} = file:list_dir([Drive, $:]),
+            {ok, DirContents} = file:list_dir("."),
+            [] = flush(),
+            ok;
+        _ ->
+            {skip, "This test is Windows-specific."}
+    end.
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
@@ -2641,8 +2710,8 @@ altname(Config) when is_list(Config) ->
 		{skipped, "Altname not supported on this platform"};
 	    {ok, "LONGAL~1"} -> 
 		{ok, "A_FILE~1"} = ?FILE_MODULE:altname(Name),
-		{ok, "C:/"} = ?FILE_MODULE:altname("C:/"),
-		{ok, "C:\\"} = ?FILE_MODULE:altname("C:\\"),
+		{ok, "c:/"} = ?FILE_MODULE:altname("C:/"),
+		{ok, "c:/"} = ?FILE_MODULE:altname("C:\\"),
 		{error,enoent} = ?FILE_MODULE:altname(NonexName),
 		{ok, "short"} = ?FILE_MODULE:altname(ShortName),
 		ok
@@ -2923,20 +2992,22 @@ delayed_write(Config) when is_list(Config) ->
     %%
     %% Test caching and normal close of non-raw file
     {ok, Fd1} = 
-	?FILE_MODULE:open(File, [write, {delayed_write, Size+1, 2000}]),
+	?FILE_MODULE:open(File, [write, {delayed_write, Size+1, 400}]),
     ok = ?FILE_MODULE:write(Fd1, Data1),
-    timer:sleep(1000), % Just in case the file system is slow
+    %% Wait for a reasonable amount of time to check whether the write was
+    %% practically instantaneous or actually delayed.
+    timer:sleep(100),
     {ok, Fd2} = ?FILE_MODULE:open(File, [read]),
     eof = ?FILE_MODULE:read(Fd2, 1),
     ok = ?FILE_MODULE:write(Fd1, Data1), % Data flush on size
-    timer:sleep(1000), % Just in case the file system is slow
+    timer:sleep(100),
     {ok, Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 2*Size+1),
     ok = ?FILE_MODULE:write(Fd1, Data1),
-    timer:sleep(3000), % Wait until data flush on timeout
+    timer:sleep(500), % Wait until data flush on timeout
     {ok, Data1Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 3*Size+1),
     ok = ?FILE_MODULE:write(Fd1, Data1),
     ok = ?FILE_MODULE:close(Fd1), % Data flush on close
-    timer:sleep(1000), % Just in case the file system is slow
+    timer:sleep(100),
     {ok, Data1Data1Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 4*Size+1),
     ok = ?FILE_MODULE:close(Fd2),
     %%
@@ -2970,7 +3041,7 @@ delayed_write(Config) when is_list(Config) ->
         {'DOWN', Mref1, _, _, _} = Down1a ->
             ct:fail(Down1a)
     end,
-    timer:sleep(1000), % Just in case the file system is slow
+    timer:sleep(100), % Just in case the file system is slow
     {ok, Fd3} = ?FILE_MODULE:open(File, [read]),
     eof = ?FILE_MODULE:read(Fd3, 1),
     Child1 ! {Parent, continue, normal},
@@ -2980,7 +3051,7 @@ delayed_write(Config) when is_list(Config) ->
         {'DOWN', Mref1, _, _, _} = Down1b ->
             ct:fail(Down1b)
     end,
-    timer:sleep(1000), % Just in case the file system is slow
+    timer:sleep(100), % Just in case the file system is slow
     {ok, Data1} = ?FILE_MODULE:pread(Fd3, bof, Size+1),
     ok = ?FILE_MODULE:close(Fd3),
     %%
@@ -2993,7 +3064,7 @@ delayed_write(Config) when is_list(Config) ->
         {'DOWN', Mref2, _, _, _} = Down2a ->
             ct:fail(Down2a)
     end,
-    timer:sleep(1000), % Just in case the file system is slow
+    timer:sleep(100), % Just in case the file system is slow
     {ok, Fd4} = ?FILE_MODULE:open(File, [read]),
     eof = ?FILE_MODULE:read(Fd4, 1),
     Child2 ! {Parent, continue, kill},
@@ -3003,7 +3074,7 @@ delayed_write(Config) when is_list(Config) ->
         {'DOWN', Mref2, _, _, _} = Down2b ->
             ct:fail(Down2b)
     end,
-    timer:sleep(1000), % Just in case the file system is slow
+    timer:sleep(100), % Just in case the file system is slow
     eof = ?FILE_MODULE:pread(Fd4, bof, 1),
     ok  = ?FILE_MODULE:close(Fd4),
     %%
@@ -3095,6 +3166,16 @@ read_ahead(Config) when is_list(Config) ->
     Data1Data2Data3 = Data1++Data2++Data3,
     {ok, Data1Data2Data3} = ?FILE_MODULE:read(Fd5, 3*Size+1),
     ok = ?FILE_MODULE:close(Fd5),
+
+    %% Ensure that a read that draws from both the buffer and the file won't
+    %% return anything wonky.
+    SplitData = << <<(I rem 256)>> || I <- lists:seq(1, 1024) >>,
+    file:write_file(File, SplitData),
+    {ok, Fd6} = ?FILE_MODULE:open(File, [raw, read, binary, {read_ahead, 256}]),
+    {ok, <<1>>} = file:read(Fd6, 1),
+    <<1, Shifted:512/binary, _Rest/binary>> = SplitData,
+    {ok, Shifted} = file:read(Fd6, 512),
+
     %%
     [] = flush(),
     ok.
@@ -3699,6 +3780,83 @@ do_large_write(Name) ->
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+%% Benchmarks
+%%
+%% Note that we only measure the time it takes to run the isolated file
+%% operations and that the actual test runtime can differ significantly,
+%% especially on the write side as the files need to be truncated before
+%% writing.
+
+large_writes(Config) when is_list(Config) ->
+    Modes = [raw, binary],
+    OpCount = 4096,
+    Data = <<0:(64 bsl 10)/unit:8>>,
+    run_write_benchmark(Config, Modes, OpCount, Data).
+
+large_writes_delayed(Config) when is_list(Config) ->
+    %% Each write is exactly as large as the delay buffer, causing the writes
+    %% to pass through each time, giving us a decent idea of how much overhead
+    %% delayed_write adds.
+    Modes = [raw, binary, {delayed_write, 64 bsl 10, 2000}],
+    OpCount = 4096,
+    Data = <<0:(64 bsl 10)/unit:8>>,
+    run_write_benchmark(Config, Modes, OpCount, Data).
+
+tiny_writes(Config) when is_list(Config) ->
+    Modes = [raw, binary],
+    OpCount = 512 bsl 10,
+    Data = <<0>>,
+    run_write_benchmark(Config, Modes, OpCount, Data).
+
+tiny_writes_delayed(Config) when is_list(Config) ->
+    Modes = [raw, binary, {delayed_write, 512 bsl 10, 2000}],
+    OpCount = 512 bsl 10,
+    Data = <<0>>,
+    run_write_benchmark(Config, Modes, OpCount, Data).
+
+%% The read benchmarks assume that "benchmark_scratch_file" has been filled by
+%% the write benchmarks.
+
+tiny_reads(Config) when is_list(Config) ->
+    Modes = [raw, binary],
+    OpCount = 512 bsl 10,
+    run_read_benchmark(Config, Modes, OpCount, 1).
+
+tiny_reads_ahead(Config) when is_list(Config) ->
+    Modes = [raw, binary, {read_ahead, 512 bsl 10}],
+    OpCount = 512 bsl 10,
+    run_read_benchmark(Config, Modes, OpCount, 1).
+
+run_write_benchmark(Config, Modes, OpCount, Data) ->
+    run_benchmark(Config, [write | Modes], OpCount, fun file:write/2, Data).
+
+run_read_benchmark(Config, Modes, OpCount, OpSize) ->
+    run_benchmark(Config, [read | Modes], OpCount, fun file:read/2, OpSize).
+
+run_benchmark(Config, Modes, OpCount, Fun, Arg) ->
+    ScratchDir = proplists:get_value(priv_dir, Config),
+    Path = filename:join(ScratchDir, "benchmark_scratch_file"),
+    {ok, Fd} = file:open(Path, Modes),
+    submit_throughput_results(Fun, [Fd, Arg], OpCount).
+
+submit_throughput_results(Fun, Args, Times) ->
+    MSecs = measure_repeated_file_op(Fun, Args, Times, millisecond),
+    IOPS = trunc(Times * (1000 / MSecs)),
+    ct_event:notify(#event{ name = benchmark_data, data = [{value,IOPS}] }),
+    {comment, io_lib:format("~p IOPS, ~p ms", [IOPS, trunc(MSecs)])}.
+
+measure_repeated_file_op(Fun, Args, Times, Unit) ->
+    Start = os:perf_counter(Unit),
+    repeated_apply(Fun, Args, Times),
+    os:perf_counter(Unit) - Start.
+
+repeated_apply(_F, _Args, Times) when Times =< 0 ->
+    ok;
+repeated_apply(F, Args, Times) ->
+    erlang:apply(F, Args),
+    repeated_apply(F, Args, Times - 1).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
 response_analysis(Module, Function, Arguments) ->
@@ -3934,7 +4092,7 @@ read_line_create_files(TestData) ->
 read_line_remove_files(TestData) ->
     [ file:delete(File) || {_Function,File,_,_} <- TestData ].
 
-%% read_line with prim_file.
+%% read_line with ?PRIM_FILE.
 read_line_1(Config) when is_list(Config) ->
     PrivDir = proplists:get_value(priv_dir, Config),
     All = read_line_testdata(PrivDir),
@@ -4103,9 +4261,9 @@ read_line_create7(Filename) ->
     file:close(F).
 
 read_line_all(Filename) ->
-    {ok,F} = prim_file:open(Filename,[read,binary]),
+    {ok,F} = ?PRIM_FILE:open(Filename,[read,binary]),
     X=read_rl_lines(F),
-    prim_file:close(F),
+    ?PRIM_FILE:close(F),
     Bin = list_to_binary([B || {ok,B} <- X]),
     Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
 		     "\r\n","\n",[global,{return,binary}]),
@@ -4138,7 +4296,7 @@ read_line_all4(Filename) ->
     {length(X),Bin}.
 
 read_rl_lines(F) ->
-    case prim_file:read_line(F) of
+    case ?PRIM_FILE:read_line(F) of
 	eof ->
 	    [];
 	{error,X} ->
@@ -4158,9 +4316,9 @@ read_rl_lines2(F) ->
     end.
 
 read_line_all_alternating(Filename) ->
-    {ok,F} = prim_file:open(Filename,[read,binary]),
+    {ok,F} = ?PRIM_FILE:open(Filename,[read,binary]),
     X=read_rl_lines(F,true),
-    prim_file:close(F),
+    ?PRIM_FILE:close(F),
     Bin = list_to_binary([B || {ok,B} <- X]),
     Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
 		     "\r\n","\n",[global,{return,binary}]),
@@ -4194,8 +4352,8 @@ read_line_all_alternating4(Filename) ->
 read_rl_lines(F,Alternate) ->
     case begin
 	     case Alternate of
-		 true -> prim_file:read(F,1);
-		 false -> prim_file:read_line(F)
+		 true -> ?PRIM_FILE:read(F,1);
+		 false -> ?PRIM_FILE:read_line(F)
 	     end 
 	 end of
 	eof ->
diff --git a/lib/kernel/test/file_name_SUITE.erl b/lib/kernel/test/file_name_SUITE.erl
index f23529fec9..3afc647081 100644
--- a/lib/kernel/test/file_name_SUITE.erl
+++ b/lib/kernel/test/file_name_SUITE.erl
@@ -77,6 +77,7 @@
 	 init_per_testcase/2, end_per_testcase/2]).
 -export([normal/1,icky/1,very_icky/1,normalize/1,home_dir/1]).
 
+-define(PRIM_FILE, prim_file).
 
 init_per_testcase(_Func, Config) ->
     Config.
@@ -131,7 +132,7 @@ home_dir(Config) when is_list(Config) ->
 					     os:putenv("HOME",NewHome),
 					     {"HOME",Save};
 					 _ ->
-					     rm_rf(prim_file,NewHome),
+					     rm_rf(?PRIM_FILE,NewHome),
 					     throw(unsupported_os)
 				     end,
 	try
@@ -145,7 +146,7 @@ home_dir(Config) when is_list(Config) ->
 		_ ->
 		    os:putenv(SaveOldName,SaveOldValue)
 	    end,
-	    rm_rf(prim_file,NewHome)
+	    rm_rf(?PRIM_FILE,NewHome)
 	end
     catch
 	throw:need_unicode_mode ->
@@ -190,7 +191,7 @@ normal(Config) when is_list(Config) ->
     try
 	Priv = proplists:get_value(priv_dir, Config),
 	file:set_cwd(Priv),
-	ok = check_normal(prim_file),
+	ok = check_normal(?PRIM_FILE),
 	ok = check_normal(file),
 	%% If all is good, delete dir again (avoid hanging dir on windows)
 	rm_rf(file,"normal_dir"),
@@ -210,7 +211,7 @@ icky(Config) when is_list(Config) ->
 	    try
 		Priv = proplists:get_value(priv_dir, Config),
 		file:set_cwd(Priv),
-		ok = check_icky(prim_file),
+		ok = check_icky(?PRIM_FILE),
 		ok = check_icky(file),
 		%% If all is good, delete dir again (avoid hanging dir on windows)
 		rm_rf(file,"icky_dir"),
@@ -229,7 +230,7 @@ very_icky(Config) when is_list(Config) ->
 	    try
 		Priv = proplists:get_value(priv_dir, Config),
 		file:set_cwd(Priv),
-		case check_very_icky(prim_file) of
+		case check_very_icky(?PRIM_FILE) of
 		    need_unicode_mode ->
 			{skipped,"VM needs to be started in Unicode filename mode"};
 		    ok ->
@@ -292,11 +293,6 @@ check_normal(Mod) ->
 		ok
 	end,
 	[ begin
-	      {ok, FD} = Mod:open(Name,[read]),
-	      {ok, Content} = Mod:read(FD,1024),
-	      ok = file:close(FD)
-	  end || {regular,Name,Content} <- NormalDir ],
-	[ begin
 	      {ok, FD} = Mod:open(Name,[read,binary]),
 	      BC = list_to_binary(Content),
 	      {ok, BC} = Mod:read(FD,1024),
@@ -412,11 +408,6 @@ check_icky(Mod) ->
 		ok
 	end,
 	[ begin
-	      {ok, FD} = Mod:open(Name,[read]),
-	      {ok, Content} = Mod:read(FD,1024),
-	      ok = file:close(FD)
-	  end || {regular,Name,Content} <- IckyDir ],
-	[ begin
 	      {ok, FD} = Mod:open(Name,[read,binary]),
 	      BC = list_to_binary([Content]),
 	      {ok, BC} = Mod:read(FD,1024),
@@ -521,11 +512,6 @@ check_very_icky(Mod) ->
 		ok
 	end,
 	[ begin
-	      {ok, FD} = Mod:open(Name,[read]),
-	      {ok, Content} = Mod:read(FD,1024),
-	      ok = file:close(FD)
-	  end || {regular,Name,Content} <- VeryIckyDir ],
-	[ begin
 	      {ok, FD} = Mod:open(Name,[read,binary]),
 	      BC = list_to_binary([Content]),
 	      {ok, BC} = Mod:read(FD,1024),
diff --git a/lib/kernel/test/gen_tcp_misc_SUITE.erl b/lib/kernel/test/gen_tcp_misc_SUITE.erl
index 331864b5de..e47023d201 100644
--- a/lib/kernel/test/gen_tcp_misc_SUITE.erl
+++ b/lib/kernel/test/gen_tcp_misc_SUITE.erl
@@ -1572,52 +1572,56 @@ fill_sendq(Config) when is_list(Config) ->
     Master = self(),
     Server =
 	spawn_link(fun () ->
-			   {ok,L} = gen_tcp:listen
-				      (0, [{active,false},binary,
-					   {reuseaddr,true},{packet,0}]),
+			   {ok,L} = gen_tcp:listen(0, [{active,false},binary,
+                                                       {reuseaddr,true},{packet,0}]),
 			   {ok,Port} = inet:port(L),
 			   Master ! {self(),client,
 				     fill_sendq_client(Port, Master)},
 			   fill_sendq_srv(L, Master)
 		   end),
     io:format("~p Server~n", [Server]),
-    receive {Server,client,Client} ->
-		  io:format("~p Client~n", [Client]),
-		  receive {Server,reader,Reader} ->
-				io:format("~p Reader~n", [Reader]),
-				fill_sendq_loop(Server, Client, Reader)
+    receive
+        {Server,client,Client} ->
+            io:format("~p Client~n", [Client]),
+            receive
+                {Server,reader,Reader} ->
+                    io:format("~p Reader~n", [Reader]),
+                    fill_sendq_loop(Server, Client, Reader)
 	    end
     end.
 
 fill_sendq_loop(Server, Client, Reader) ->
     %% Master
     %%
-    receive {Server,send} ->
+    receive
+        {Server,send} ->
 	    fill_sendq_loop(Server, Client, Reader)
     after 2000 ->
 	    %% Send queue full, sender blocked -> close client.
 	    io:format("Send timeout, closing Client...~n", []),
 	    Client ! {self(),close},
-	    receive {Server,[{error,closed}]} ->
-			  io:format("Got server closed.~n"),
-			  receive {Reader,[{error,closed}]} ->
-					io:format
-						("Got reader closed.~n"),
-					ok
-				after 3000 ->
-					ct:fail({timeout,{closed,reader}})
-				end;
-			  {Reader,[{error,closed}]} ->
-			  io:format("Got reader closed.~n"),
-			  receive {Server,[{error,closed}]} ->
-					io:format("Got server closed~n"),
-					ok
-				after 3000 ->
-					ct:fail({timeout,{closed,server}})
-				end
-		  after 3000 ->
-			  ct:fail({timeout,{closed,[server,reader]}})
-		  end
+	    receive
+                {Server,[{error,closed}]} ->
+                    io:format("Got server closed.~n"),
+                    receive
+                        {Reader,[{error,closed}]} ->
+                            io:format("Got reader closed.~n"),
+                            ok
+                    after 3000 ->
+                            ct:fail({timeout,{closed,reader}})
+                    end;
+                {Reader,[{error,closed}]} ->
+                    io:format("Got reader closed.~n"),
+                    receive
+                        {Server,[{error,closed}]} ->
+                            io:format("Got server closed~n"),
+                            ok
+                    after 3000 ->
+                            ct:fail({timeout,{closed,server}})
+                    end
+            after 3000 ->
+                    ct:fail({timeout,{closed,[server,reader]}})
+            end
     end.
 
 fill_sendq_srv(L, Master) ->
diff --git a/lib/kernel/test/kernel_bench.spec b/lib/kernel/test/kernel_bench.spec
index 8de60dae31..4de133f21b 100644
--- a/lib/kernel/test/kernel_bench.spec
+++ b/lib/kernel/test/kernel_bench.spec
@@ -1 +1,2 @@
 {groups,"../kernel_test",zlib_SUITE,[bench]}.
+{groups,"../kernel_test",file_SUITE,[bench]}.
diff --git a/lib/kernel/test/os_SUITE.erl b/lib/kernel/test/os_SUITE.erl
index 53a9e168ef..8056321448 100644
--- a/lib/kernel/test/os_SUITE.erl
+++ b/lib/kernel/test/os_SUITE.erl
@@ -22,7 +22,8 @@
 -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
 	 init_per_group/2,end_per_group/2,
 	 init_per_testcase/2,end_per_testcase/2]).
--export([space_in_cwd/1, quoting/1, cmd_unicode/1, space_in_name/1, bad_command/1,
+-export([space_in_cwd/1, quoting/1, cmd_unicode/1, 
+         null_in_command/1, space_in_name/1, bad_command/1,
 	 find_executable/1, unix_comment_in_command/1, deep_list_command/1,
          large_output_command/1, background_command/0, background_command/1,
          message_leak/1, close_stdin/0, close_stdin/1, perf_counter_api/1]).
@@ -34,7 +35,8 @@ suite() ->
      {timetrap,{minutes,1}}].
 
 all() ->
-    [space_in_cwd, quoting, cmd_unicode, space_in_name, bad_command,
+    [space_in_cwd, quoting, cmd_unicode, null_in_command,
+     space_in_name, bad_command,
      find_executable, unix_comment_in_command, deep_list_command,
      large_output_command, background_command, message_leak,
      close_stdin, perf_counter_api].
@@ -125,6 +127,14 @@ cmd_unicode(Config) when is_list(Config) ->
     [] = receive_all(),
     ok.
 
+null_in_command(Config) ->
+    {Ok, Error} = case os:type() of
+                      {win32,_} -> {"dir", "di\0r"};
+                      _ -> {"ls", "l\0s"}
+                  end,
+    true = is_list(try os:cmd(Ok) catch Class0:_ -> Class0 end),
+    error = try os:cmd(Error) catch Class1:_ -> Class1 end,
+    ok.
 
 %% Test that program with a space in its name can be executed.
 space_in_name(Config) when is_list(Config) ->
diff --git a/lib/kernel/test/prim_file_SUITE.erl b/lib/kernel/test/prim_file_SUITE.erl
index 2f4330c217..db753679ea 100644
--- a/lib/kernel/test/prim_file_SUITE.erl
+++ b/lib/kernel/test/prim_file_SUITE.erl
@@ -21,38 +21,23 @@
 -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
 	 init_per_group/2,end_per_group/2, init_per_testcase/2, end_per_testcase/2,
 	 read_write_file/1, free_memory/0]).
--export([cur_dir_0a/1, cur_dir_0b/1, 
-	 cur_dir_1a/1, cur_dir_1b/1, 
-	 make_del_dir_a/1, make_del_dir_b/1,
-	 pos1/1, pos2/1]).
--export([close/1, 
-	 delete_a/1, delete_b/1]).
--export([ open1/1, modes/1]).
--export([ 
-	  file_info_basic_file_a/1, file_info_basic_file_b/1,
-	  file_info_basic_directory_a/1, file_info_basic_directory_b/1,
-	  file_info_bad_a/1, file_info_bad_b/1, 
-	  file_info_times_a/1, file_info_times_b/1, 
-	  file_write_file_info_a/1, file_write_file_info_b/1,
-	  file_read_file_info_opts/1, file_write_file_info_opts/1,
-	  file_write_read_file_info_opts/1
-	]).
--export([rename_a/1, rename_b/1, 
-	 access/1, truncate/1, datasync/1, sync/1,
+-export([cur_dir_0/1, cur_dir_1/1,
+	 make_del_dir/1, pos1/1, pos2/1]).
+-export([close/1, delete/1]).
+-export([open1/1, modes/1]).
+-export([file_info_basic_file/1, file_info_basic_directory/1, file_info_bad/1,
+	 file_info_times/1, file_write_file_info/1,
+         file_read_file_info_opts/1, file_write_file_info_opts/1,
+	 file_write_read_file_info_opts/1]).
+-export([rename/1, access/1, truncate/1, datasync/1, sync/1,
 	 read_write/1, pread_write/1, append/1, exclusive/1]).
--export([ e_delete/1, e_rename/1, e_make_dir/1, e_del_dir/1]).
+-export([e_delete/1, e_rename/1, e_make_dir/1, e_del_dir/1]).
 
--export([ read_not_really_compressed/1,
-	  read_compressed/1, write_compressed/1,
-	  compress_errors/1]).
-
--export([ 
-	  make_link_a/1, make_link_b/1,
-	  read_link_info_for_non_link/1, 
-	  symlinks_a/1, symlinks_b/1,
-	  list_dir_limit/1,
-	  list_dir_error/1,
-	  list_dir/1]).
+-export([make_link/1, read_link_info_for_non_link/1,
+	 symlinks/1,
+	 list_dir_limit/1,
+	 list_dir_error/1,
+	 list_dir/1]).
 
 -export([advise/1]).
 -export([large_write/1]).
@@ -67,29 +52,16 @@
 
 -define(PRIM_FILE, prim_file).
 
-%% Calls ?PRIM_FILE:F with arguments A and an optional handle H 
-%% as first argument, unless the handle is [], i.e no handle.
-%% This is a macro to give the compiler and thereby 
-%% the cross reference tool the possibility to interprete
-%% the call, since M, F, A (or [H | A]) can all be known at 
-%% compile time.
--define(PRIM_FILE_call(F, H, A), 
-	case H of
-	    [] -> apply(?PRIM_FILE, F, A);
-	    _ ->  apply(?PRIM_FILE, F, [H | A])
-	end).
-
 suite() -> [].
 
 all() -> 
     [read_write_file, {group, dirs}, {group, files},
-     delete_a, delete_b, rename_a, rename_b, {group, errors},
-     {group, compression}, {group, links}, list_dir_limit, list_dir].
+     delete, rename, {group, errors}, {group, links},
+     list_dir_limit, list_dir].
 
 groups() -> 
     [{dirs, [],
-      [make_del_dir_a, make_del_dir_b, cur_dir_0a, cur_dir_0b,
-       cur_dir_1a, cur_dir_1b]},
+      [make_del_dir, cur_dir_0, cur_dir_1]},
      {files, [],
       [{group, open}, {group, pos}, {group, file_info},
        truncate, sync, datasync, advise, large_write, allocate]},
@@ -98,22 +70,14 @@ groups() ->
        append, exclusive]},
      {pos, [], [pos1, pos2]},
      {file_info, [],
-      [file_info_basic_file_a, file_info_basic_file_b,
-       file_info_basic_directory_a,
-       file_info_basic_directory_b, file_info_bad_a,
-       file_info_bad_b, file_info_times_a, file_info_times_b,
-       file_write_file_info_a, file_write_file_info_b,
-       file_read_file_info_opts, file_write_file_info_opts,
-       file_write_read_file_info_opts
+      [file_info_basic_file,file_info_basic_directory, file_info_bad,
+       file_info_times, file_write_file_info, file_read_file_info_opts,
+       file_write_file_info_opts, file_write_read_file_info_opts
       ]},
      {errors, [],
       [e_delete, e_rename, e_make_dir, e_del_dir]},
-     {compression, [],
-      [read_compressed, read_not_really_compressed,
-       write_compressed, compress_errors]},
      {links, [],
-      [make_link_a, make_link_b, read_link_info_for_non_link,
-       symlinks_a, symlinks_b, list_dir_error]}].
+      [make_link, read_link_info_for_non_link, symlinks, list_dir_error]}].
 
 init_per_testcase(large_write, Config) ->
     {ok, Started} = application:ensure_all_started(os_mon),
@@ -246,39 +210,27 @@ read_write_file(Config) when is_list(Config) ->
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-
-make_del_dir_a(Config) when is_list(Config) ->
-    make_del_dir(Config, [], "_a").
-
-make_del_dir_b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = make_del_dir(Config, Handle, "_b"),
-    ok = ?PRIM_FILE:stop(Handle),
-    %% Just to make sure the state of the server makes a difference
-    {error, einval} = ?PRIM_FILE_call(get_cwd, Handle, []),
-    Result.
-
-make_del_dir(Config, Handle, Suffix) ->
+make_del_dir(Config) when is_list(Config) ->
     RootDir = proplists:get_value(priv_dir,Config),
     NewDir = filename:join(RootDir,
 			   atom_to_list(?MODULE)
-			   ++"_mk-dir"++Suffix),
-    ok = ?PRIM_FILE_call(make_dir, Handle, [NewDir]),
-    {error, eexist} = ?PRIM_FILE_call(make_dir, Handle, [NewDir]),
-    ok = ?PRIM_FILE_call(del_dir, Handle, [NewDir]),
-    {error, enoent} = ?PRIM_FILE_call(del_dir, Handle, [NewDir]),
+			   ++"_mk-dir"),
+    ok = ?PRIM_FILE:make_dir(NewDir),
+    {error, eexist} = ?PRIM_FILE:make_dir(NewDir),
+    ok = ?PRIM_FILE:del_dir(NewDir),
+    {error, enoent} = ?PRIM_FILE:del_dir(NewDir),
 
     %% Make sure we are not in a directory directly under test_server
     %% as that would result in eacces errors when trying to delete '..',
     %% because there are processes having that directory as current.
-    ok = ?PRIM_FILE_call(make_dir, Handle, [NewDir]),
-    {ok, CurrentDir} = ?PRIM_FILE_call(get_cwd, Handle, []),
+    ok = ?PRIM_FILE:make_dir(NewDir),
+    {ok, CurrentDir} = ?PRIM_FILE:get_cwd(),
     case {os:type(), length(NewDir) >= 260 } of
 	{{win32,_}, true} ->
 	    io:format("Skip set_cwd for windows path longer than 260 (MAX_PATH)\n", []),
 	    io:format("\nNewDir = ~p\n", [NewDir]);
 	_ ->
-	    ok = ?PRIM_FILE_call(set_cwd, Handle, [NewDir])
+	    ok = ?PRIM_FILE:set_cwd(NewDir)
     end,
     try
 	%% Check that we get an error when trying to create...
@@ -286,14 +238,14 @@ make_del_dir(Config, Handle, Suffix) ->
 	NewDir2 = filename:join(RootDir,
 				atom_to_list(?MODULE)
 				++"_mk-dir-noexist/foo"),
-	{error, enoent} = ?PRIM_FILE_call(make_dir, Handle, [NewDir2]),
+	{error, enoent} = ?PRIM_FILE:make_dir(NewDir2),
 	%% a nameless directory
-	{error, enoent} = ?PRIM_FILE_call(make_dir, Handle, [""]),
+	{error, enoent} = ?PRIM_FILE:make_dir(""),
 	%% a directory with illegal name
-	{error, badarg} = ?PRIM_FILE_call(make_dir, Handle, ['mk-dir']),
+	{error, badarg} = ?PRIM_FILE:make_dir('mk-dir'),
 
 	%% a directory with illegal name, even if it's a (bad) list
-	{error, badarg} = ?PRIM_FILE_call(make_dir, Handle, [[1,2,3,{}]]),
+	{error, badarg} = ?PRIM_FILE:make_dir([1,2,3,{}]),
 
 	%% Maybe this isn't an error, exactly, but worth mentioning anyway:
 	%% ok = ?PRIM_FILE:make_dir([$f,$o,$o,0,$b,$a,$r])),
@@ -306,125 +258,101 @@ make_del_dir(Config, Handle, Suffix) ->
 	%% Try deleting some bad directories
 	%% Deleting the parent directory to the current, sounds dangerous, huh?
 	%% Don't worry ;-) the parent directory should never be empty, right?
-	case ?PRIM_FILE_call(del_dir, Handle, [".."]) of
+	case ?PRIM_FILE:del_dir("..") of
 	    {error, eexist} -> ok;
 	    {error, eacces} -> ok;	%OpenBSD
 	    {error, einval} -> ok		%FreeBSD
 	end,
-	{error, enoent} = ?PRIM_FILE_call(del_dir, Handle, [""]),
-	{error, badarg} = ?PRIM_FILE_call(del_dir, Handle, [[3,2,1,{}]])
+	{error, enoent} = ?PRIM_FILE:del_dir(""),
+	{error, badarg} = ?PRIM_FILE:del_dir([3,2,1,{}])
     after
-	ok = ?PRIM_FILE_call(set_cwd, Handle, [CurrentDir])
+	ok = ?PRIM_FILE:set_cwd(CurrentDir)
     end,
     ok.
 
-cur_dir_0a(Config) when is_list(Config) ->
-    cur_dir_0(Config, []).
-
-cur_dir_0b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = cur_dir_0(Config, Handle),
-    ok = ?PRIM_FILE:stop(Handle),
-    Result.
-
-cur_dir_0(Config, Handle) ->
+cur_dir_0(Config) when is_list(Config) ->
     %% Find out the current dir, and cd to it ;-)
-    {ok,BaseDir} = ?PRIM_FILE_call(get_cwd, Handle, []),
+    {ok,BaseDir} = ?PRIM_FILE:get_cwd(),
     Dir1 = BaseDir ++ "", %% Check that it's a string
-    ok = ?PRIM_FILE_call(set_cwd, Handle, [Dir1]),
-    DirName = atom_to_list(?MODULE) ++
-	case Handle of
-	    [] ->
-		"_curdir";
-	    _ ->
-		"_curdir_h"
-	end,
+    ok = ?PRIM_FILE:set_cwd(Dir1),
+    DirName = atom_to_list(?MODULE) ++ "_curdir",
 
     %% Make a new dir, and cd to that
     RootDir = proplists:get_value(priv_dir,Config),
     NewDir = filename:join(RootDir, DirName),
-    ok = ?PRIM_FILE_call(make_dir, Handle, [NewDir]),
+    ok = ?PRIM_FILE:make_dir(NewDir),
     case {os:type(), length(NewDir) >= 260} of
 	{{win32,_}, true} ->
 	    io:format("Skip set_cwd for windows path longer than 260 (MAX_PATH):\n"),
 	    io:format("\nNewDir = ~p\n", [NewDir]);
 	_ ->
 	    io:format("cd to ~s",[NewDir]),
-	    ok = ?PRIM_FILE_call(set_cwd, Handle, [NewDir]),
+	    ok = ?PRIM_FILE:set_cwd(NewDir),
 
 	    %% Create a file in the new current directory, and check that it
 	    %% really is created there
 	    UncommonName = "uncommon.fil",
 	    {ok,Fd} = ?PRIM_FILE:open(UncommonName, [read, write]),
 	    ok = ?PRIM_FILE:close(Fd),
-	    {ok,NewDirFiles} = ?PRIM_FILE_call(list_dir, Handle, ["."]),
+	    {ok,NewDirFiles} = ?PRIM_FILE:list_dir("."),
 	    true = lists:member(UncommonName,NewDirFiles),
 
 	    %% Delete the directory and return to the old current directory
 	    %% and check that the created file isn't there (too!)
 	    expect({error, einval}, {error, eacces}, {error, eexist},
-		   ?PRIM_FILE_call(del_dir, Handle, [NewDir])),
-	    ?PRIM_FILE_call(delete, Handle, [UncommonName]),
-	    {ok,[]} = ?PRIM_FILE_call(list_dir, Handle, ["."]),
-	    ok = ?PRIM_FILE_call(set_cwd, Handle, [Dir1]),
+		   ?PRIM_FILE:del_dir(NewDir)),
+	    ?PRIM_FILE:delete(UncommonName),
+	    {ok,[]} = ?PRIM_FILE:list_dir("."),
+	    ok = ?PRIM_FILE:set_cwd(Dir1),
 	    io:format("cd back to ~s",[Dir1]),
-	    ok = ?PRIM_FILE_call(del_dir, Handle, [NewDir]),
-	    {error, enoent} = ?PRIM_FILE_call(set_cwd, Handle, [NewDir]),
-	    ok = ?PRIM_FILE_call(set_cwd, Handle, [Dir1]),
+	    ok = ?PRIM_FILE:del_dir(NewDir),
+	    {error, enoent} = ?PRIM_FILE:set_cwd(NewDir),
+	    ok = ?PRIM_FILE:set_cwd(Dir1),
 	    io:format("cd back to ~s",[Dir1]),
-	    {ok,OldDirFiles} = ?PRIM_FILE_call(list_dir, Handle, ["."]),
+	    {ok,OldDirFiles} = ?PRIM_FILE:list_dir("."),
 	    false = lists:member(UncommonName,OldDirFiles)
     end,
 
     %% Try doing some bad things
     {error, badarg} =
-	?PRIM_FILE_call(set_cwd, Handle, [{foo,bar}]),
+	?PRIM_FILE:set_cwd({foo,bar}),
     {error, enoent} =
-	?PRIM_FILE_call(set_cwd, Handle, [""]),
+	?PRIM_FILE:set_cwd(""),
     {error, enoent} =
-	?PRIM_FILE_call(set_cwd, Handle, [".......a......"]),
+	?PRIM_FILE:set_cwd(".......a......"),
     {ok,BaseDir} =
-	?PRIM_FILE_call(get_cwd, Handle, []), %% Still there?
+	?PRIM_FILE:get_cwd(), %% Still there?
 
     %% On Windows, there should only be slashes, no backslashes,
     %% in the return value of get_cwd().
     %% (The test is harmless on Unix, because filenames usually
     %% don't contain backslashes.)
 
-    {ok, BaseDir} = ?PRIM_FILE_call(get_cwd, Handle, []),
+    {ok, BaseDir} = ?PRIM_FILE:get_cwd(),
     false = lists:member($\\, BaseDir),
 
     ok.
 
 %% Tests ?PRIM_FILE:get_cwd/1.
 
-cur_dir_1a(Config) when is_list(Config) ->
-    cur_dir_1(Config, []).
-
-cur_dir_1b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = cur_dir_1(Config, Handle),
-    ok = ?PRIM_FILE:stop(Handle),
-    Result.
-
-cur_dir_1(Config, Handle) ->
+cur_dir_1(Config) when is_list(Config) ->
     case os:type() of
 	{win32, _} ->
-	    win_cur_dir_1(Config, Handle);
+	    win_cur_dir_1(Config);
 	_ ->
 	    {error, enotsup} =
-		?PRIM_FILE_call(get_cwd, Handle, ["d:"])
+		?PRIM_FILE:get_cwd("d:")
     end,
     ok.
 
-win_cur_dir_1(_Config, Handle) ->
-    {ok, BaseDir} = ?PRIM_FILE_call(get_cwd, Handle, []),
+win_cur_dir_1(_Config) ->
+    {ok, BaseDir} = ?PRIM_FILE:get_cwd(),
 
     %% Get the drive letter from the current directory,
     %% and try to get current directory for that drive.
 
     [Drive, $:|_] = BaseDir,
-    {ok, BaseDir} = ?PRIM_FILE_call(get_cwd, Handle, [[Drive, $:]]),
+    {ok, BaseDir} = ?PRIM_FILE:get_cwd([Drive, $:]),
     io:format("BaseDir = ~s\n", [BaseDir]),
 
     %% Unfortunately, there is no way to move away from the
@@ -446,12 +374,12 @@ open1(Config) when is_list(Config) ->
     Name = filename:join(NewDir, "foo1.fil"),
     {ok,Fd1} = ?PRIM_FILE:open(Name, [read, write]),
     {ok,Fd2} = ?PRIM_FILE:open(Name, [read]),
-    Str = "{a,tuple}.\n",
-    Length = length(Str),
-    ?PRIM_FILE:write(Fd1,Str),
+    Bin = list_to_binary("{a,tuple}.\n"),
+    Length = byte_size(Bin),
+    ?PRIM_FILE:write(Fd1,Bin),
     {ok,0} = ?PRIM_FILE:position(Fd1,bof),
-    {ok, Str} = ?PRIM_FILE:read(Fd1,Length),
-    {ok, Str} = ?PRIM_FILE:read(Fd2,Length),
+    {ok, Bin} = ?PRIM_FILE:read(Fd1,Length),
+    {ok, Bin} = ?PRIM_FILE:read(Fd2,Length),
     ok = ?PRIM_FILE:close(Fd2),
     {ok,0} = ?PRIM_FILE:position(Fd1,bof),
     ok = ?PRIM_FILE:truncate(Fd1),
@@ -471,13 +399,13 @@ modes(Config) when is_list(Config) ->
 			   ++"_open_modes"),
     ok = ?PRIM_FILE:make_dir(NewDir),
     Name1 = filename:join(NewDir, "foo1.fil"),
-    Marker = "hello, world",
-    Length = length(Marker),
+    Marker = <<"hello, world">>,
+    Length = byte_size(Marker),
 
     %% write
     {ok, Fd1} = ?PRIM_FILE:open(Name1, [write]),
     ok = ?PRIM_FILE:write(Fd1, Marker),
-    ok = ?PRIM_FILE:write(Fd1, ".\n"),
+    ok = ?PRIM_FILE:write(Fd1, <<".\n">>),
     ok = ?PRIM_FILE:close(Fd1),
 
     %% read
@@ -496,12 +424,6 @@ modes(Config) when is_list(Config) ->
     {ok, Marker} = ?PRIM_FILE:read(Fd4, Length),
     ok = ?PRIM_FILE:close(Fd4),
 
-    %% read and binary
-    BinaryMarker = list_to_binary(Marker),
-    {ok, Fd5} = ?PRIM_FILE:open(Name1, [read, binary]),
-    {ok, BinaryMarker} = ?PRIM_FILE:read(Fd5, Length),
-    ok = ?PRIM_FILE:close(Fd5),
-
     ok.
 
 close(Config) when is_list(Config) ->
@@ -528,9 +450,9 @@ access(Config) when is_list(Config) ->
     Name = filename:join(RootDir,
 			 atom_to_list(?MODULE)
 			 ++"_access.fil"),
-    Str = "ABCDEFGH",
+    Bin = <<"ABCDEFGH">>,
     {ok,Fd1} = ?PRIM_FILE:open(Name, [write]),
-    ?PRIM_FILE:write(Fd1,Str),
+    ?PRIM_FILE:write(Fd1,Bin),
     ok = ?PRIM_FILE:close(Fd1),
     %% Check that we can't write when in read only mode
     {ok,Fd2} = ?PRIM_FILE:open(Name, [read]),
@@ -542,7 +464,7 @@ access(Config) when is_list(Config) ->
     end,
     ok = ?PRIM_FILE:close(Fd2),
     {ok, Fd3} = ?PRIM_FILE:open(Name, [read]),
-    {ok, Str} = ?PRIM_FILE:read(Fd3,length(Str)),
+    {ok, Bin} = ?PRIM_FILE:read(Fd3,byte_size(Bin)),
     ok = ?PRIM_FILE:close(Fd3),
 
     ok.
@@ -564,7 +486,7 @@ read_write(Config) when is_list(Config) ->
     ok.
 
 read_write_test(File) ->
-    Marker = "hello, world",
+    Marker = <<"hello, world">>,
     ok = ?PRIM_FILE:write(File, Marker),
     {ok, 0} = ?PRIM_FILE:position(File, 0),
     {ok, Marker} = ?PRIM_FILE:read(File, 100),
@@ -590,15 +512,15 @@ pread_write(Config) when is_list(Config) ->
     ok.
 
 pread_write_test(File) ->
-    Marker = "hello, world",
-    Len = length(Marker),
+    Marker = <<"hello, world">>,
+    Len = byte_size(Marker),
     ok = ?PRIM_FILE:write(File, Marker),
     {ok, Marker} = ?PRIM_FILE:pread(File, 0, 100),
     eof = ?PRIM_FILE:pread(File, 100, 1),
     ok = ?PRIM_FILE:pwrite(File, Len, Marker),
     {ok, Marker} = ?PRIM_FILE:pread(File, Len, 100),
     eof = ?PRIM_FILE:pread(File, 100, 1),
-    MM = Marker ++ Marker,
+    MM = <<Marker/binary,Marker/binary>>,
     {ok, MM} = ?PRIM_FILE:pread(File, 0, 100),
     ok = ?PRIM_FILE:close(File),
     ok.
@@ -655,24 +577,24 @@ pos1(Config) when is_list(Config) ->
 			 atom_to_list(?MODULE)
 			 ++"_pos1.fil"),
     {ok, Fd1} = ?PRIM_FILE:open(Name, [write]),
-    ?PRIM_FILE:write(Fd1,"ABCDEFGH"),
+    ?PRIM_FILE:write(Fd1,<<"ABCDEFGH">>),
     ok        = ?PRIM_FILE:close(Fd1),
     {ok, Fd2} = ?PRIM_FILE:open(Name, [read]),
 
     %% Start pos is first char
     io:format("Relative positions"),
-    {ok, "A"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"A">>} = ?PRIM_FILE:read(Fd2,1),
     {ok, 2}   = ?PRIM_FILE:position(Fd2,{cur,1}),
-    {ok, "C"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"C">>} = ?PRIM_FILE:read(Fd2,1),
     {ok, 0}   = ?PRIM_FILE:position(Fd2,{cur,-3}),
-    {ok, "A"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"A">>} = ?PRIM_FILE:read(Fd2,1),
     %% Backwards from first char should be an error
     {ok,0}    = ?PRIM_FILE:position(Fd2,{cur,-1}),
     {error, einval} = ?PRIM_FILE:position(Fd2,{cur,-1}),
     %% Reset position and move again
     {ok, 0}   = ?PRIM_FILE:position(Fd2,0),
     {ok, 2}   = ?PRIM_FILE:position(Fd2,{cur,2}),
-    {ok, "C"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"C">>} = ?PRIM_FILE:read(Fd2,1),
     %% Go a lot forwards
     {ok, 13}  = ?PRIM_FILE:position(Fd2,{cur,10}),
     eof       = ?PRIM_FILE:read(Fd2,1),
@@ -684,27 +606,27 @@ pos1(Config) when is_list(Config) ->
     {ok, 8}   = ?PRIM_FILE:position(Fd2,cur),
     eof = ?PRIM_FILE:read(Fd2,1),
     {ok, 7}   = ?PRIM_FILE:position(Fd2,7),
-    {ok, "H"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"H">>} = ?PRIM_FILE:read(Fd2,1),
     {ok, 0}   = ?PRIM_FILE:position(Fd2,0),
-    {ok, "A"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"A">>} = ?PRIM_FILE:read(Fd2,1),
     {ok, 3}   = ?PRIM_FILE:position(Fd2,3),
-    {ok, "D"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"D">>} = ?PRIM_FILE:read(Fd2,1),
     {ok, 12}  = ?PRIM_FILE:position(Fd2,12),
     eof       = ?PRIM_FILE:read(Fd2,1),
     {ok, 3}   = ?PRIM_FILE:position(Fd2,3),
-    {ok, "D"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"D">>} = ?PRIM_FILE:read(Fd2,1),
     %% Try the {bof,X} notation
     {ok, 3}   = ?PRIM_FILE:position(Fd2,{bof,3}),
-    {ok, "D"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"D">>} = ?PRIM_FILE:read(Fd2,1),
 
     %% Try eof positions
     io:format("EOF positions"),
     {ok, 8}   = ?PRIM_FILE:position(Fd2,{eof,0}),
     eof       = ?PRIM_FILE:read(Fd2,1),
     {ok, 7}   = ?PRIM_FILE:position(Fd2,{eof,-1}),
-    {ok, "H"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"H">>} = ?PRIM_FILE:read(Fd2,1),
     {ok, 0}   = ?PRIM_FILE:position(Fd2,{eof,-8}),
-    {ok, "A"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"A">>} = ?PRIM_FILE:read(Fd2,1),
     {error, einval} = ?PRIM_FILE:position(Fd2,{eof,-9}),
     ok.
 
@@ -714,7 +636,7 @@ pos2(Config) when is_list(Config) ->
 			 atom_to_list(?MODULE)
 			 ++"_pos2.fil"),
     {ok,Fd1} = ?PRIM_FILE:open(Name, [write]),
-    ?PRIM_FILE:write(Fd1,"ABCDEFGH"),
+    ?PRIM_FILE:write(Fd1,<<"ABCDEFGH">>),
     ok = ?PRIM_FILE:close(Fd1),
     {ok, Fd2} = ?PRIM_FILE:open(Name, [read]),
     {error, einval} = ?PRIM_FILE:position(Fd2,-1),
@@ -722,35 +644,25 @@ pos2(Config) when is_list(Config) ->
     %% Make sure that we still can search after an error.
     {ok, 0}   = ?PRIM_FILE:position(Fd2, 0),
     {ok, 3}   = ?PRIM_FILE:position(Fd2, {bof,3}),
-    {ok, "D"} = ?PRIM_FILE:read(Fd2,1),
+    {ok, <<"D">>} = ?PRIM_FILE:read(Fd2,1),
 
     io:format("DONE"),
     ok.
 
-
-file_info_basic_file_a(Config) when is_list(Config) ->
-    file_info_basic_file(Config, [], "_a").
-
-file_info_basic_file_b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = file_info_basic_file(Config, Handle, "_b"),
-    ok = ?PRIM_FILE:stop(Handle),
-    Result.
-
-file_info_basic_file(Config, Handle, Suffix) ->
+file_info_basic_file(Config) when is_list(Config) ->
     RootDir = proplists:get_value(priv_dir, Config),
 
     %% Create a short file.
     Name = filename:join(RootDir,
 			 atom_to_list(?MODULE)
-			 ++"_basic_test"++Suffix++".fil"),
+			 ++"_basic_test"".fil"),
     {ok,Fd1} = ?PRIM_FILE:open(Name, [write]),
     ?PRIM_FILE:write(Fd1, "foo bar"),
     ok = ?PRIM_FILE:close(Fd1),
 
     %% Test that the file has the expected attributes.
     %% The times are tricky, so we will save them to a separate test case.
-    {ok, FileInfo} = ?PRIM_FILE_call(read_file_info, Handle, [Name]),
+    {ok, FileInfo} = ?PRIM_FILE:read_file_info(Name),
     #file_info{size = Size, type = Type, access = Access,
 	       atime = AccessTime, mtime = ModifyTime} =
 	FileInfo,
@@ -768,39 +680,30 @@ file_info_basic_file(Config, Handle, Suffix) ->
 
     ok.
 
-file_info_basic_directory_a(Config) when is_list(Config) ->
-    file_info_basic_directory(Config, []).
-
-file_info_basic_directory_b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = file_info_basic_directory(Config, Handle),
-    ok = ?PRIM_FILE:stop(Handle),
-    Result.
-
-file_info_basic_directory(Config, Handle) ->
+file_info_basic_directory(Config) when is_list(Config) ->
     %% Note: filename:join/1 removes any trailing slash,
     %% which is essential for ?PRIM_FILE:read_file_info/1 to work on
     %% platforms such as Windows95.
     RootDir = filename:join([proplists:get_value(priv_dir, Config)]),
 
     %% Test that the RootDir directory has the expected attributes.
-    test_directory(RootDir, read_write, Handle),
+    test_directory(RootDir, read_write),
 
     %% Note that on Windows file systems, "/" or "c:/" are *NOT* directories.
     %% Therefore, test that ?PRIM_FILE:read_file_info/1 behaves 
     %% as if they were directories.
     case os:type() of
 	{win32, _} ->
-	    test_directory("/", read_write, Handle),
-	    test_directory("c:/", read_write, Handle),
-	    test_directory("c:\\", read_write, Handle);
+	    test_directory("/", read_write),
+	    test_directory("c:/", read_write),
+	    test_directory("c:\\", read_write);
 	_ ->
-	    test_directory("/", read, Handle)
+	    test_directory("/", read)
     end,
     ok.
 
-test_directory(Name, ExpectedAccess, Handle) ->
-    {ok, FileInfo} = ?PRIM_FILE_call(read_file_info, Handle, [Name]),
+test_directory(Name, ExpectedAccess) ->
+    {ok, FileInfo} = ?PRIM_FILE:read_file_info(Name),
     #file_info{size = Size, type = Type, access = Access,
 	       atime = AccessTime, mtime = ModifyTime} =
 	FileInfo,
@@ -824,45 +727,24 @@ all_integers([]) ->
 
 %% Try something nonexistent.
 
-file_info_bad_a(Config) when is_list(Config) ->
-    file_info_bad(Config, []).
-
-file_info_bad_b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = file_info_bad(Config, Handle),
-    ok = ?PRIM_FILE:stop(Handle),
-    Result.
-
-file_info_bad(Config, Handle) ->
+file_info_bad(Config) when is_list(Config) ->
     RootDir = filename:join([proplists:get_value(priv_dir, Config)]),
-    {error, enoent} =
-	?PRIM_FILE_call(
-	   read_file_info, Handle, 
-	   [filename:join(RootDir,
-			  atom_to_list(?MODULE)++"_nonexistent")]),
+    NonExistent = filename:join(RootDir, atom_to_list(?MODULE)++"_nonexistent"),
+    {error, enoent} = ?PRIM_FILE:read_file_info(NonExistent),
     ok.
 
 %% Test that the file times behave as they should.
 
-file_info_times_a(Config) when is_list(Config) ->
-    file_info_times(Config, [], "_a").
-
-file_info_times_b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = file_info_times(Config, Handle, "_b"),
-    ok = ?PRIM_FILE:stop(Handle),
-    Result.
-
-file_info_times(Config, Handle, Suffix) ->
+file_info_times(Config) when is_list(Config) ->
     %% We have to try this twice, since if the test runs across the change
     %% of a month the time diff calculations will fail. But it won't happen
     %% if you run it twice in succession.
     test_server:m_out_of_n(
       1,2,
-      fun() -> file_info_int(Config, Handle, Suffix) end),
+      fun() -> file_info_int(Config) end),
     ok.
 
-file_info_int(Config, Handle, Suffix) ->
+file_info_int(Config) ->
     %% Note: filename:join/1 removes any trailing slash,
     %% which is essential for ?PRIM_FILE:read_file_info/1 to work on
     %% platforms such as Windows95.
@@ -872,14 +754,14 @@ file_info_int(Config, Handle, Suffix) ->
 
     Name = filename:join(RootDir,
 			 atom_to_list(?MODULE)
-			 ++"_file_info"++Suffix++".fil"),
+			 ++"_file_info.fil"),
     {ok,Fd1} = ?PRIM_FILE:open(Name, [write]),
     ?PRIM_FILE:write(Fd1,"foo"),
 
     %% check that the file got a modify date max a few seconds away from now
     {ok, #file_info{type = regular,
 		    atime = AccTime1, mtime = ModTime1}} =
-	?PRIM_FILE_call(read_file_info, Handle, [Name]),
+	?PRIM_FILE:read_file_info(Name),
     Now = erlang:localtime(),
     io:format("Now ~p",[Now]),
     io:format("Open file Acc ~p Mod ~p",[AccTime1,ModTime1]),
@@ -897,7 +779,7 @@ file_info_int(Config, Handle, Suffix) ->
     ok = ?PRIM_FILE:close(Fd1),
     {ok, #file_info{size = Size, type = regular, access = Access,
 		    atime = AccTime2, mtime = ModTime2}} =
-	?PRIM_FILE_call(read_file_info, Handle, [Name]),
+	?PRIM_FILE:read_file_info(Name),
     io:format("Closed file Acc ~p Mod ~p",[AccTime2,ModTime2]),
     true = time_dist(ModTime1, ModTime2) >= 0,
 
@@ -909,7 +791,7 @@ file_info_int(Config, Handle, Suffix) ->
     {ok, #file_info{size = DSize, type = directory,
 		    access = DAccess,
 		    atime = AccTime3, mtime = ModTime3}} =
-	?PRIM_FILE_call(read_file_info, Handle, [RootDir]),
+	?PRIM_FILE:read_file_info(RootDir),
     %% this dir was modified only a few secs ago
     io:format("Dir Acc ~p; Mod ~p; Now ~p",
 	      [AccTime3, ModTime3, Now]),
@@ -936,16 +818,7 @@ filter_atime(Atime, Config) ->
 
 %% Test the write_file_info/2 function.
 
-file_write_file_info_a(Config) when is_list(Config) ->
-    file_write_file_info(Config, [], "_a").
-
-file_write_file_info_b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = file_write_file_info(Config, Handle, "_b"),
-    ok = ?PRIM_FILE:stop(Handle),
-    Result.
-
-file_write_file_info(Config, Handle, Suffix) ->
+file_write_file_info(Config) when is_list(Config) ->
     RootDir = get_good_directory(Config),
     io:format("RootDir = ~p", [RootDir]),
 
@@ -955,16 +828,16 @@ file_write_file_info(Config, Handle, Suffix) ->
 
     Name = filename:join(RootDir,
 			 atom_to_list(?MODULE)
-			 ++"_write_file_info_ro"++Suffix),
+			 ++"_write_file_info_ro"),
     ok = ?PRIM_FILE:write_file(Name, "hello"),
     Time = {{1997, 01, 02}, {12, 35, 42}},
     Info = #file_info{mode=8#400, atime=Time, mtime=Time, ctime=Time},
-    ok = ?PRIM_FILE_call(write_file_info, Handle, [Name, Info]),
+    ok = ?PRIM_FILE:write_file_info(Name, Info),
 
     %% Read back the times.
 
     {ok, ActualInfo} =
-	?PRIM_FILE_call(read_file_info, Handle, [Name]),
+	?PRIM_FILE:read_file_info(Name),
     #file_info{mode=_Mode, atime=ActAtime, mtime=Time,
 	       ctime=ActCtime} = ActualInfo,
     FilteredAtime = filter_atime(Time, Config),
@@ -980,14 +853,11 @@ file_write_file_info(Config, Handle, Suffix) ->
     {error, eacces} = ?PRIM_FILE:write_file(Name, "hello again"),
 
     %% Make the file writable again.
-
-    ?PRIM_FILE_call(write_file_info, Handle,
-		    [Name, #file_info{mode=8#600}]),
+    ?PRIM_FILE:write_file_info(Name, #file_info{mode=8#600}),
     ok = ?PRIM_FILE:write_file(Name, "hello again"),
 
     %% And unwritable.
-    ?PRIM_FILE_call(write_file_info, Handle,
-		    [Name, #file_info{mode=8#400}]),
+    ?PRIM_FILE:write_file_info(Name, #file_info{mode=8#400}),
     {error, eacces} = ?PRIM_FILE:write_file(Name, "hello again"),
 
     %% Write the times again.
@@ -995,9 +865,9 @@ file_write_file_info(Config, Handle, Suffix) ->
 
     NewTime = {{1997, 02, 15}, {13, 18, 20}},
     NewInfo = #file_info{atime=NewTime, mtime=NewTime, ctime=NewTime},
-    ok = ?PRIM_FILE_call(write_file_info, Handle, [Name, NewInfo]),
+    ok = ?PRIM_FILE:write_file_info(Name, NewInfo),
     {ok, ActualInfo2} =
-	?PRIM_FILE_call(read_file_info, Handle, [Name]),
+	?PRIM_FILE:read_file_info(Name),
     #file_info{atime=NewActAtime, mtime=NewTime,
 	       ctime=NewActCtime} = ActualInfo2,
     NewFilteredAtime = filter_atime(NewTime, Config),
@@ -1012,14 +882,12 @@ file_write_file_info(Config, Handle, Suffix) ->
 
     %% Make the file writeable again, so that we can remove the
     %% test suites ... :-)
-    ?PRIM_FILE_call(write_file_info, Handle,
-		    [Name, #file_info{mode=8#600}]),
+    ?PRIM_FILE:write_file_info(Name, #file_info{mode=8#600}),
     ok.
 
 %% Test the write_file_info/3 function.
 
 file_write_file_info_opts(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
     RootDir = get_good_directory(Config),
     io:format("RootDir = ~p", [RootDir]),
 
@@ -1028,7 +896,7 @@ file_write_file_info_opts(Config) when is_list(Config) ->
 
     lists:foreach(fun
 		      ({FI, Opts}) ->
-			 ok = ?PRIM_FILE_call(write_file_info, Handle, [Name, FI, Opts])
+			 ok = ?PRIM_FILE:write_file_info(Name, FI, Opts)
 		 end, [
 			{#file_info{ mode=8#600, atime = Time, mtime = Time, ctime = Time}, Opts} ||
 			  Opts <- [[{time, posix}]],
@@ -1038,7 +906,7 @@ file_write_file_info_opts(Config) when is_list(Config) ->
     %% REM: determine date range dependent on time_t = Uint32 | Sint32 | Sint64 | Uint64
     %% Determine time_t on os:type()?
     lists:foreach(fun ({FI, Opts}) ->
-			 ok = ?PRIM_FILE_call(write_file_info, Handle, [Name, FI, Opts])
+			 ok = ?PRIM_FILE:write_file_info(Name, FI, Opts)
 		 end, [ {#file_info{ mode=8#400, atime = Time, mtime = Time, ctime = Time}, Opts} ||
 			  Opts <- [[{time, universal}],[{time, local}]],
 			  Time <- [
@@ -1050,11 +918,9 @@ file_write_file_info_opts(Config) when is_list(Config) ->
 				   {{2037,2,3},{23,59,59}},
 				   erlang:localtime()
 				  ]]),
-    ok   = ?PRIM_FILE:stop(Handle),
     ok.
 
 file_read_file_info_opts(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
     RootDir = get_good_directory(Config),
     io:format("RootDir = ~p", [RootDir]),
 
@@ -1063,41 +929,38 @@ file_read_file_info_opts(Config) when is_list(Config) ->
 
     lists:foreach(fun
 		      (Opts) ->
-			 {ok,_} = ?PRIM_FILE_call(read_file_info, Handle, [Name, Opts])
+			 {ok,_} = ?PRIM_FILE:read_file_info(Name, Opts)
 		 end, [[{time, Type}] || Type <- [local, universal, posix]]),
-    ok   = ?PRIM_FILE:stop(Handle),
     ok.
 
 %% Test the write and read back *_file_info/3 functions.
 
 file_write_read_file_info_opts(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
     RootDir = get_good_directory(Config),
     io:format("RootDir = ~p", [RootDir]),
 
     Name = filename:join(RootDir, atom_to_list(?MODULE) ++"_read_write_file_info_opts"),
     ok   = ?PRIM_FILE:write_file(Name, "hello_opts2"),
 
-    ok = file_write_read_file_info_opts(Handle, Name, {{1989, 04, 28}, {19,30,22}}, [{time, local}]),
-    ok = file_write_read_file_info_opts(Handle, Name, {{1989, 04, 28}, {19,30,22}}, [{time, universal}]),
+    ok = file_write_read_file_info_opts(Name, {{1989, 04, 28}, {19,30,22}}, [{time, local}]),
+    ok = file_write_read_file_info_opts(Name, {{1989, 04, 28}, {19,30,22}}, [{time, universal}]),
     %% will not work on platforms with unsigned time_t
-    %ok = file_write_read_file_info_opts(Handle, Name, {{1930, 04, 28}, {19,30,22}}, [{time, local}]),
-    %ok = file_write_read_file_info_opts(Handle, Name, {{1930, 04, 28}, {19,30,22}}, [{time, universal}]),
-    ok = file_write_read_file_info_opts(Handle, Name, 1, [{time, posix}]),
+    %ok = file_write_read_file_info_opts(Name, {{1930, 04, 28}, {19,30,22}}, [{time, local}]),
+    %ok = file_write_read_file_info_opts(Name, {{1930, 04, 28}, {19,30,22}}, [{time, universal}]),
+    ok = file_write_read_file_info_opts(Name, 1, [{time, posix}]),
     %% will not work on platforms with unsigned time_t
-    %ok = file_write_read_file_info_opts(Handle, Name, -1, [{time, posix}]),
-    %ok = file_write_read_file_info_opts(Handle, Name, -300000, [{time, posix}]),
-    ok = file_write_read_file_info_opts(Handle, Name, 300000, [{time, posix}]),
-    ok = file_write_read_file_info_opts(Handle, Name, 0, [{time, posix}]),
+    %ok = file_write_read_file_info_opts(Name, -1, [{time, posix}]),
+    %ok = file_write_read_file_info_opts(Name, -300000, [{time, posix}]),
+    ok = file_write_read_file_info_opts(Name, 300000, [{time, posix}]),
+    ok = file_write_read_file_info_opts(Name, 0, [{time, posix}]),
 
-    ok = ?PRIM_FILE:stop(Handle),
     ok.
 
-file_write_read_file_info_opts(Handle, Name, Mtime, Opts) ->
-    {ok, FI} = ?PRIM_FILE_call(read_file_info, Handle, [Name, Opts]),
+file_write_read_file_info_opts(Name, Mtime, Opts) ->
+    {ok, FI} = ?PRIM_FILE:read_file_info(Name, Opts),
     FI2 = FI#file_info{ mtime = Mtime },
-    ok = ?PRIM_FILE_call(write_file_info, Handle, [Name, FI2, Opts]),
-    {ok, FI3} = ?PRIM_FILE_call(read_file_info, Handle, [Name, Opts]),
+    ok = ?PRIM_FILE:write_file_info(Name, FI2, Opts),
+    {ok, FI3} = ?PRIM_FILE:read_file_info(Name, Opts),
     io:format("Expecting mtime = ~p, got ~p~n", [FI2#file_info.mtime, FI3#file_info.mtime]),
     FI2 = FI3,
     ok.
@@ -1175,8 +1038,8 @@ advise(Config) when is_list(Config) ->
 			   atom_to_list(?MODULE)
 			   ++"_advise.fil"),
 
-    Line1 = "Hello\n",
-    Line2 = "World!\n",
+    Line1 = <<"Hello\n">>,
+    Line2 = <<"World!\n">>,
 
     {ok, Fd} = ?PRIM_FILE:open(Advise, [write]),
     ok = ?PRIM_FILE:advise(Fd, 0, 0, normal),
@@ -1226,7 +1089,7 @@ advise(Config) when is_list(Config) ->
     {ok, Fd9} = ?PRIM_FILE:open(Advise, [read]),
     Offset = 0,
     %% same as a 0 length in some implementations
-    Length = length(Line1) + length(Line2),
+    Length = byte_size(Line1) + byte_size(Line2),
     ok = ?PRIM_FILE:advise(Fd9, Offset, Length, sequential),
     {ok, Line1} = ?PRIM_FILE:read_line(Fd9),
     {ok, Line2} = ?PRIM_FILE:read_line(Fd9),
@@ -1250,23 +1113,18 @@ do_large_write(Name) ->
     Chunk = <<0:ChunkSize/unit:8>>,
     Data = zip_data(lists:duplicate(Chunks, Chunk), Interleave),
     Size = Chunks * ChunkSize + Chunks,	% 4 G + 32
-    Wordsize = erlang:system_info(wordsize),
-    case prim_file:write_file(Name, Data) of
-	ok when Wordsize =:= 8 ->
-	    {ok,#file_info{size=Size}} = file:read_file_info(Name),
-	    {ok,Fd} = prim_file:open(Name, [read]),
-	    check_large_write(Fd, ChunkSize, 0, Interleave);
-	{error,einval} when Wordsize =:= 4 ->
-	    ok
-    end.
+    ok = ?PRIM_FILE:write_file(Name, Data),
+    {ok,#file_info{size=Size}} = file:read_file_info(Name),
+    {ok,Fd} = ?PRIM_FILE:open(Name, [read]),
+    check_large_write(Fd, ChunkSize, 0, Interleave).
 
 check_large_write(Fd, ChunkSize, Pos, [X|Interleave]) ->
     Pos1 = Pos + ChunkSize,
-    {ok,Pos1} = prim_file:position(Fd, {cur,ChunkSize}),
-    {ok,[X]} = prim_file:read(Fd, 1),
+    {ok,Pos1} = ?PRIM_FILE:position(Fd, {cur,ChunkSize}),
+    {ok,<<X>>} = ?PRIM_FILE:read(Fd, 1),
     check_large_write(Fd, ChunkSize, Pos1+1, Interleave);
 check_large_write(Fd, _, _, []) ->
-    eof = prim_file:read(Fd, 1),
+    eof = ?PRIM_FILE:read(Fd, 1),
     ok.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1338,71 +1196,53 @@ allocate_and_assert(Fd, Offset, Length) ->
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-delete_a(Config) when is_list(Config) ->
-    delete(Config, [], "_a").
-
-delete_b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = delete(Config, Handle, "_b"),
-    ok = ?PRIM_FILE:stop(Handle),
-    Result.
-
-delete(Config, Handle, Suffix) ->
+delete(Config) when is_list(Config) ->
     RootDir = proplists:get_value(priv_dir,Config),
     Name = filename:join(RootDir,
 			 atom_to_list(?MODULE)
-			 ++"_delete"++Suffix++".fil"),
+			 ++"_delete.fil"),
     {ok, Fd1} = ?PRIM_FILE:open(Name, [write]),
     ?PRIM_FILE:write(Fd1,"ok.\n"),
     ok = ?PRIM_FILE:close(Fd1),
     %% Check that the file is readable
     {ok, Fd2} = ?PRIM_FILE:open(Name, [read]),
     ok = ?PRIM_FILE:close(Fd2),
-    ok = ?PRIM_FILE_call(delete, Handle, [Name]),
+    ok = ?PRIM_FILE:delete(Name),
     %% Check that the file is not readable anymore
     {error, _} = ?PRIM_FILE:open(Name, [read]),
     %% Try deleting a nonexistent file
-    {error, enoent} = ?PRIM_FILE_call(delete, Handle, [Name]),
+    {error, enoent} = ?PRIM_FILE:delete(Name),
     ok.
 
-rename_a(Config) when is_list(Config) ->
-    rename(Config, [], "_a").
-
-rename_b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = rename(Config, Handle, "_b"),
-    ok = ?PRIM_FILE:stop(Handle),
-    Result.
-
-rename(Config, Handle, Suffix) ->
+rename(Config) when is_list(Config) ->
     RootDir = proplists:get_value(priv_dir,Config),
-    FileName1 = atom_to_list(?MODULE)++"_rename"++Suffix++".fil",
-    FileName2 = atom_to_list(?MODULE)++"_rename"++Suffix++".ful",
+    FileName1 = atom_to_list(?MODULE)++"_rename.fil",
+    FileName2 = atom_to_list(?MODULE)++"_rename.ful",
     Name1 = filename:join(RootDir, FileName1),
     Name2 = filename:join(RootDir, FileName2),
     {ok,Fd1} = ?PRIM_FILE:open(Name1, [write]),
     ok = ?PRIM_FILE:close(Fd1),
     %% Rename, and check that it really changed name
-    ok = ?PRIM_FILE_call(rename, Handle, [Name1, Name2]),
+    ok = ?PRIM_FILE:rename(Name1, Name2),
     {error, _} = ?PRIM_FILE:open(Name1, [read]),
     {ok, Fd2} = ?PRIM_FILE:open(Name2, [read]),
     ok = ?PRIM_FILE:close(Fd2),
     %% Try renaming something to itself
-    ok = ?PRIM_FILE_call(rename, Handle, [Name2, Name2]),
+    ok = ?PRIM_FILE:rename(Name2, Name2),
     %% Try renaming something that doesn't exist
     {error, enoent} =
-	?PRIM_FILE_call(rename, Handle, [Name1, Name2]),
+	?PRIM_FILE:rename(Name1, Name2),
     %% Try renaming to something else than a string
     {error, badarg} =
-	?PRIM_FILE_call(rename, Handle, [Name1, foobar]),
+	?PRIM_FILE:rename(Name1, foobar),
 
     %% Move between directories
     DirName1 = filename:join(RootDir,
 			     atom_to_list(?MODULE)
-			     ++"_rename_dir"++Suffix),
+			     ++"_rename_dir"),
     DirName2 = filename:join(RootDir,
 			     atom_to_list(?MODULE)
-			     ++"_second_rename_dir"++Suffix),
+			     ++"_second_rename_dir"),
     Name1foo = filename:join(DirName1, "foo.fil"),
     Name2foo = filename:join(DirName2, "foo.fil"),
     Name2bar = filename:join(DirName2, "bar.dir"),
@@ -1410,21 +1250,21 @@ rename(Config, Handle, Suffix) ->
     %% The name has to include the full file name, path is not enough
     expect(
       {error, eexist}, {error, eisdir},
-      ?PRIM_FILE_call(rename, Handle, [Name2, DirName1])),
+      ?PRIM_FILE:rename(Name2, DirName1)),
     ok =
-	?PRIM_FILE_call(rename, Handle, [Name2, Name1foo]),
+	?PRIM_FILE:rename(Name2, Name1foo),
     %% Now rename the directory
-    ok = ?PRIM_FILE_call(rename, Handle, [DirName1, DirName2]),
+    ok = ?PRIM_FILE:rename(DirName1, DirName2),
     %% And check that the file is there now
     {ok,Fd3} = ?PRIM_FILE:open(Name2foo, [read]),
     ok = ?PRIM_FILE:close(Fd3),
     %% Try some dirty things now: move the directory into itself
     {error, Msg1} =
-	?PRIM_FILE_call(rename, Handle, [DirName2, Name2bar]),
+	?PRIM_FILE:rename(DirName2, Name2bar),
     io:format("Errmsg1: ~p",[Msg1]),
     %% move dir into a file in itself
     {error, Msg2} =
-	?PRIM_FILE_call(rename, Handle, [DirName2, Name2foo]),
+	?PRIM_FILE:rename(DirName2, Name2foo),
     io:format("Errmsg2: ~p",[Msg2]),
 
     ok.
@@ -1657,165 +1497,19 @@ e_del_dir(Config) when is_list(Config) ->
     ok.
 
 
-%% Trying reading and positioning from a compressed file.
-
-read_compressed(Config) when is_list(Config) ->
-    Data = proplists:get_value(data_dir, Config),
-    Real = filename:join(Data, "realmen.html.gz"),
-    {ok, Fd} = ?PRIM_FILE:open(Real, [read, compressed]),
-    try_read_file(Fd).
-
-%% Trying reading and positioning from an uncompressed file,
-%% but with the compressed flag given.
-
-read_not_really_compressed(Config) when is_list(Config) ->
-    Data = proplists:get_value(data_dir, Config),
-    Priv = proplists:get_value(priv_dir, Config),
-
-    %% The file realmen.html might have got CRs added (by WinZip).
-    %% Remove them, or the file positions will not be correct.
-
-    Real = filename:join(Data, "realmen.html"),
-    RealPriv = filename:join(Priv,
-			     atom_to_list(?MODULE)++"_realmen.html"),
-    {ok, RealDataBin} = ?PRIM_FILE:read_file(Real),
-    RealData = remove_crs(binary_to_list(RealDataBin), []),
-    ok = ?PRIM_FILE:write_file(RealPriv, RealData),
-    {ok, Fd} = ?PRIM_FILE:open(RealPriv, [read, compressed]),
-    try_read_file(Fd).
-
-remove_crs([$\r|Rest], Result) ->
-    remove_crs(Rest, Result);
-remove_crs([C|Rest], Result) ->
-    remove_crs(Rest, [C|Result]);
-remove_crs([], Result) ->
-    lists:reverse(Result).
-
-try_read_file(Fd) ->
-    %% Seek to the current position (nothing should happen).
-
-    {ok, 0} = ?PRIM_FILE:position(Fd, 0),
-    {ok, 0} = ?PRIM_FILE:position(Fd, {cur, 0}),
-
-    %% Read a few lines from a compressed file.
-
-    ShouldBe = "<TITLE>Real Programmers Don't Use PASCAL</TITLE>\n",
-    {ok, ShouldBe} = ?PRIM_FILE:read(Fd, length(ShouldBe)),
-
-    %% Now seek forward.
-
-    {ok, 381} = ?PRIM_FILE:position(Fd, 381),
-    Back = "Back in the good old days -- the \"Golden Era\" " ++
-	"of computers, it was\n",
-    {ok, Back} = ?PRIM_FILE:read(Fd, length(Back)),
-
-    %% Try to search forward relative to the current position.
-
-    {ok, CurPos} = ?PRIM_FILE:position(Fd, {cur, 0}),
-    RealPos = 4273,
-    {ok, RealPos} = ?PRIM_FILE:position(Fd, {cur, RealPos-CurPos}),
-    RealProg = "<LI> Real Programmers aren't afraid to use GOTOs.\n",
-    {ok, RealProg} = ?PRIM_FILE:read(Fd, length(RealProg)),
-
-    %% Seek backward.
-
-    AfterTitle = length("<TITLE>"),
-    {ok, AfterTitle} = ?PRIM_FILE:position(Fd, AfterTitle),
-    Title = "Real Programmers Don't Use PASCAL</TITLE>\n",
-    {ok, Title} = ?PRIM_FILE:read(Fd, length(Title)),
-
-    %% Done.
-
-    ?PRIM_FILE:close(Fd),
-    ok.
-
-write_compressed(Config) when is_list(Config) ->
-    Priv = proplists:get_value(priv_dir, Config),
-    MyFile = filename:join(Priv,
-			   atom_to_list(?MODULE)++"_test.gz"),
-
-    %% Write a file.
-
-    {ok, Fd} = ?PRIM_FILE:open(MyFile, [write, compressed]),
-    {ok, 0} = ?PRIM_FILE:position(Fd, 0),
-    Prefix = "hello\n",
-    End = "end\n",
-    ok = ?PRIM_FILE:write(Fd, Prefix),
-    {ok, 143} = ?PRIM_FILE:position(Fd, 143),
-    ok = ?PRIM_FILE:write(Fd, End),
-    ok = ?PRIM_FILE:close(Fd),
-
-    %% Read the file and verify the contents.
-
-    {ok, Fd1} = ?PRIM_FILE:open(MyFile, [read, compressed]),
-    {ok, Prefix} = ?PRIM_FILE:read(Fd1, length(Prefix)),
-    Second = lists:duplicate(143-length(Prefix), 0) ++ End,
-    {ok, Second} = ?PRIM_FILE:read(Fd1, length(Second)),
-    ok = ?PRIM_FILE:close(Fd1),
-
-    %% Ensure that the file is compressed.
-
-    TotalSize = 143 + length(End),
-    case ?PRIM_FILE:read_file_info(MyFile) of
-	{ok, #file_info{size=Size}} when Size < TotalSize ->
-	    ok;
-	{ok, #file_info{size=Size}} when Size == TotalSize ->
-	    ct:fail(file_not_compressed)
-    end,
-
-    %% Write again to ensure that the file is truncated.
-
-    {ok, Fd2} = ?PRIM_FILE:open(MyFile, [write, compressed]),
-    NewString = "aaaaaaaaaaa",
-    ok = ?PRIM_FILE:write(Fd2, NewString),
-    ok = ?PRIM_FILE:close(Fd2),
-    {ok, Fd3} = ?PRIM_FILE:open(MyFile, [read, compressed]),
-    {ok, NewString} = ?PRIM_FILE:read(Fd3, 1024),
-    ok = ?PRIM_FILE:close(Fd3),
-
-    ok.
-
-compress_errors(Config) when is_list(Config) ->
-    Data = proplists:get_value(data_dir, Config),
-    {error, enoent} = ?PRIM_FILE:open("non_existing__",
-				      [compressed, read]),
-    {error, einval} = ?PRIM_FILE:open("non_existing__",
-				      [compressed, read, write]),
-
-    %% Read a corrupted .gz file.
-
-    Corrupted = filename:join(Data, "corrupted.gz"),
-    {ok, Fd} = ?PRIM_FILE:open(Corrupted, [read, compressed]),
-    {error, eio} = ?PRIM_FILE:read(Fd, 100),
-    ?PRIM_FILE:close(Fd),
-
-    ok.
-
-
-%% Test creating a hard link.
-make_link_a(Config) when is_list(Config) ->
-    make_link(Config, [], "_a").
-
-%% Test creating a hard link.
-make_link_b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = make_link(Config, Handle, "_b"),
-    ok = ?PRIM_FILE:stop(Handle),
-    Result.
-
-make_link(Config, Handle, Suffix) ->
+make_link(Config) when is_list(Config) ->
     RootDir = proplists:get_value(priv_dir, Config),
     NewDir = filename:join(RootDir,
 			   atom_to_list(?MODULE)
-			   ++"_make_link"++Suffix),
-    ok = ?PRIM_FILE_call(make_dir, Handle, [NewDir]),
+			   ++"_make_link"),
+    ok = ?PRIM_FILE:make_dir(NewDir),
 
     Name = filename:join(NewDir, "a_file"),
     ok = ?PRIM_FILE:write_file(Name, "some contents\n"),
 
     Alias = filename:join(NewDir, "an_alias"),
     Result =
-	case ?PRIM_FILE_call(make_link, Handle, [Name, Alias]) of
+	case ?PRIM_FILE:make_link(Name, Alias) of
 	    {error, enotsup} ->
 		{skipped, "Links not supported on this platform"};
 	    ok ->
@@ -1826,12 +1520,12 @@ make_link(Config, Handle, Suffix) ->
 		%% since they are not used on symbolic links.
 
 		{ok, Info} =
-		    ?PRIM_FILE_call(read_link_info, Handle, [Name]),
+		    ?PRIM_FILE:read_link_info(Name),
 		{ok, Info} =
-		    ?PRIM_FILE_call(read_link_info, Handle, [Alias]),
+		    ?PRIM_FILE:read_link_info(Alias),
 		#file_info{links = 2, type = regular} = Info,
 		{error, eexist} =
-		    ?PRIM_FILE_call(make_link, Handle, [Name, Alias]),
+		    ?PRIM_FILE:make_link(Name, Alias),
 		ok
 	end,
 
@@ -1843,30 +1537,19 @@ read_link_info_for_non_link(Config) when is_list(Config) ->
     {ok, #file_info{type=directory}} = ?PRIM_FILE:read_link_info("."),
     ok.
 
-%% Test operations on symbolic links (for Unix).
-symlinks_a(Config) when is_list(Config) ->
-    symlinks(Config, [], "_a").
-
-%% Test operations on symbolic links (for Unix).
-symlinks_b(Config) when is_list(Config) ->
-    {ok, Handle} = ?PRIM_FILE:start(),
-    Result = symlinks(Config, Handle, "_b"),
-    ok = ?PRIM_FILE:stop(Handle),
-    Result.
-
-symlinks(Config, Handle, Suffix) ->
+symlinks(Config) when is_list(Config)  ->
     RootDir = proplists:get_value(priv_dir, Config),
     NewDir = filename:join(RootDir,
 			   atom_to_list(?MODULE)
-			   ++"_make_symlink"++Suffix),
-    ok = ?PRIM_FILE_call(make_dir, Handle, [NewDir]),
+			   ++"_make_symlink"),
+    ok = ?PRIM_FILE:make_dir(NewDir),
 
     Name = filename:join(NewDir, "a_plain_file"),
     ok = ?PRIM_FILE:write_file(Name, "some stupid content\n"),
 
     Alias = filename:join(NewDir, "a_symlink_alias"),
     Result =
-	case ?PRIM_FILE_call(make_symlink, Handle, [Name, Alias]) of
+	case ?PRIM_FILE:make_symlink(Name, Alias) of
 	    {error, enotsup} ->
 		{skipped, "Links not supported on this platform"};
 	    {error, eperm} ->
@@ -1874,20 +1557,20 @@ symlinks(Config, Handle, Suffix) ->
 		{skipped, "Windows user not privileged to create links"};
 	    ok ->
 		{ok, Info1} =
-		    ?PRIM_FILE_call(read_file_info, Handle, [Name]),
+		    ?PRIM_FILE:read_file_info(Name),
 		{ok, Info1} =
-		    ?PRIM_FILE_call(read_file_info, Handle, [Alias]),
+		    ?PRIM_FILE:read_file_info(Alias),
 		{ok, Info1} =
-		    ?PRIM_FILE_call(read_link_info, Handle, [Name]),
+		    ?PRIM_FILE:read_link_info(Name),
 		#file_info{links = 1, type = regular} = Info1,
 
 		{ok, Info2} =
-		    ?PRIM_FILE_call(read_link_info, Handle, [Alias]),
+		    ?PRIM_FILE:read_link_info(Alias),
 		#file_info{links=1, type=symlink} = Info2,
 		{ok, Name} =
-		    ?PRIM_FILE_call(read_link, Handle, [Alias]),
+		    ?PRIM_FILE:read_link(Alias),
 		{ok, Name} =
-		    ?PRIM_FILE_call(read_link_all, Handle, [Alias]),
+		    ?PRIM_FILE:read_link_all(Alias),
 		%% If all is good, delete dir again (avoid hanging dir on windows)
 		rm_rf(?PRIM_FILE,NewDir),
 		ok
@@ -1907,10 +1590,9 @@ list_dir_limit(Config) when is_list(Config) ->
     RootDir = proplists:get_value(priv_dir, Config),
     NewDir = filename:join(RootDir,
 			   atom_to_list(?MODULE)++"_list_dir_limit"),
-    {ok, Handle1} = ?PRIM_FILE:start(),
-    ok = ?PRIM_FILE_call(make_dir, Handle1, [NewDir]),
+    ok = ?PRIM_FILE:make_dir(NewDir),
     Ref = erlang:start_timer(MaxTime*1000, self(), []),
-    Result = list_dir_limit_loop(NewDir, Handle1, Ref, MaxNumber, 0),
+    Result = list_dir_limit_loop(NewDir, Ref, MaxNumber, 0),
     Time = case erlang:cancel_timer(Ref) of
 	       false -> MaxTime;
 	       T -> MaxTime - (T div 1000)
@@ -1920,21 +1602,18 @@ list_dir_limit(Config) when is_list(Config) ->
 		 {error, _Reason, N} -> N;
 		 _ -> 0
 	     end,
-    {ok, Handle2} = ?PRIM_FILE:start(),
-    list_dir_limit_cleanup(NewDir, Handle2, Number, 0),
-    ok = ?PRIM_FILE:stop(Handle1),
-    ok = ?PRIM_FILE:stop(Handle2),
+    list_dir_limit_cleanup(NewDir, Number, 0),
     {ok, Number} = Result,
     {comment, 
      "Created " ++ integer_to_list(Number) ++ " files in " 
      ++ integer_to_list(Time) ++ " seconds."}.
 
-list_dir_limit_loop(Dir, Handle, _Ref, N, Cnt) when Cnt >= N ->
-    list_dir_check(Dir, Handle, Cnt);
-list_dir_limit_loop(Dir, Handle, Ref, N, Cnt) ->
+list_dir_limit_loop(Dir, _Ref, N, Cnt) when Cnt >= N ->
+    list_dir_check(Dir, Cnt);
+list_dir_limit_loop(Dir, Ref, N, Cnt) ->
     receive 
 	{timeout, Ref, []} -> 
-	    list_dir_check(Dir, Handle, Cnt)
+	    list_dir_check(Dir, Cnt)
     after 0 ->
 	    Name = integer_to_list(Cnt),
 	    case ?PRIM_FILE:write_file(filename:join(Dir, Name), Name) of
@@ -1942,23 +1621,23 @@ list_dir_limit_loop(Dir, Handle, Ref, N, Cnt) ->
 		    Next = Cnt + 1,
 		    case Cnt rem 100 of
 			0 ->
-			    case list_dir_check(Dir, Handle, Next) of
+			    case list_dir_check(Dir, Next) of
 				{ok, Next} ->
 				    list_dir_limit_loop(
-				      Dir, Handle, Ref, N, Next);
+				      Dir, Ref, N, Next);
 				Other ->
 				    Other
 			    end;
 			_ ->
-			    list_dir_limit_loop(Dir, Handle, Ref, N, Next)
+			    list_dir_limit_loop(Dir, Ref, N, Next)
 		    end;
 		{error, Reason} ->
 		    {error, Reason, Cnt}
 	    end
     end.
 
-list_dir_check(Dir, Handle, Cnt) ->
-    case ?PRIM_FILE:list_dir(Handle, Dir) of
+list_dir_check(Dir, Cnt) ->
+    case ?PRIM_FILE:list_dir(Dir) of
 	{ok, ListDir} ->
 	    case length(ListDir) of
 		Cnt ->
@@ -1975,18 +1654,18 @@ list_dir_check(Dir, Handle, Cnt) ->
 %% Deletes N files while ignoring errors, then continues deleting
 %% as long as they exist.
 
-list_dir_limit_cleanup(Dir, Handle, N, Cnt) when Cnt >= N ->
+list_dir_limit_cleanup(Dir, N, Cnt) when Cnt >= N ->
     Name = integer_to_list(Cnt),
-    case ?PRIM_FILE:delete(Handle, filename:join(Dir, Name)) of
+    case ?PRIM_FILE:delete(filename:join(Dir, Name)) of
 	ok ->
-	    list_dir_limit_cleanup(Dir, Handle, N, Cnt+1);
+	    list_dir_limit_cleanup(Dir, N, Cnt+1);
 	_ ->
 	    ok
     end;
-list_dir_limit_cleanup(Dir, Handle, N, Cnt) ->
+list_dir_limit_cleanup(Dir, N, Cnt) ->
     Name = integer_to_list(Cnt),
-    ?PRIM_FILE:delete(Handle, filename:join(Dir, Name)),
-    list_dir_limit_cleanup(Dir, Handle, N, Cnt+1).
+    ?PRIM_FILE:delete(filename:join(Dir, Name)),
+    list_dir_limit_cleanup(Dir, N, Cnt+1).
 
 %%%
 %%% Test list_dir() on a non-existing pathname.
@@ -1995,7 +1674,7 @@ list_dir_limit_cleanup(Dir, Handle, N, Cnt) ->
 list_dir_error(Config) ->
     Priv = proplists:get_value(priv_dir, Config),
     NonExisting = filename:join(Priv, "non-existing-dir"),
-    {error,enoent} = prim_file:list_dir(NonExisting),
+    {error,enoent} = ?PRIM_FILE:list_dir(NonExisting),
     ok.
 
 %%%
@@ -2063,7 +1742,7 @@ do_run_large_file_test(Config, Run, Name0) ->
 		      {'DOWN',Mref,_,_,_} -> ok;
 		      {Tester,done} -> ok
 		  end,
-		  prim_file:delete(Name)
+		  ?PRIM_FILE:delete(Name)
 	  end),
 
     %% Run the test case.
diff --git a/lib/kernel/test/sendfile_SUITE.erl b/lib/kernel/test/sendfile_SUITE.erl
index bfa564c32c..0c0b1cbcb6 100644
--- a/lib/kernel/test/sendfile_SUITE.erl
+++ b/lib/kernel/test/sendfile_SUITE.erl
@@ -23,30 +23,41 @@
 -include_lib("common_test/include/ct.hrl").
 -include_lib("kernel/include/file.hrl").
 
--compile(export_all).
-
-all() -> [{group,async_threads},
-	  {group,no_async_threads}].
-
-groups() ->
-    [{async_threads,[],tcs()},
-     {no_async_threads,[],tcs()}].
-
-tcs() ->
-    [t_sendfile_small
-     ,t_sendfile_big_all
-     ,t_sendfile_big_size
-     ,t_sendfile_many_small
-     ,t_sendfile_partial
-     ,t_sendfile_offset
-     ,t_sendfile_sendafter
-     ,t_sendfile_recvafter
-     ,t_sendfile_recvafter_remoteclose
-     ,t_sendfile_sendduring
-     ,t_sendfile_recvduring
-     ,t_sendfile_closeduring
-     ,t_sendfile_crashduring
-    ].
+-export([all/0, init_per_suite/1, end_per_suite/1, init_per_testcase/2]).
+
+-export([sendfile_server/2, sendfile_do_recv/2, init/1, handle_event/2]).
+
+-export(
+    [t_sendfile_small/1,
+     t_sendfile_big_all/1,
+     t_sendfile_big_size/1,
+     t_sendfile_many_small/1,
+     t_sendfile_partial/1,
+     t_sendfile_offset/1,
+     t_sendfile_sendafter/1,
+     t_sendfile_recvafter/1,
+     t_sendfile_recvafter_remoteclose/1,
+     t_sendfile_sendduring/1,
+     t_sendfile_recvduring/1,
+     t_sendfile_closeduring/1,
+     t_sendfile_crashduring/1,
+     t_sendfile_arguments/1]).
+
+all() ->
+    [t_sendfile_small,
+     t_sendfile_big_all,
+     t_sendfile_big_size,
+     t_sendfile_many_small,
+     t_sendfile_partial,
+     t_sendfile_offset,
+     t_sendfile_sendafter,
+     t_sendfile_recvafter,
+     t_sendfile_recvafter_remoteclose,
+     t_sendfile_sendduring,
+     t_sendfile_recvduring,
+     t_sendfile_closeduring,
+     t_sendfile_crashduring,
+     t_sendfile_arguments].
 
 init_per_suite(Config) ->
     case {os:type(),os:version()} of
@@ -72,28 +83,18 @@ init_per_suite(Config) ->
 end_per_suite(Config) ->
     file:delete(proplists:get_value(big_file, Config)).
 
-init_per_group(async_threads,Config) ->
-    case erlang:system_info(thread_pool_size) of
-	0 ->
-	    {skip,"No async threads"};
-	_ ->
-	    [{sendfile_opts,[{use_threads,true}]}|Config]
-    end;
-init_per_group(no_async_threads,Config) ->
-    [{sendfile_opts,[{use_threads,false}]}|Config].
-
-end_per_group(_,_Config) ->
-    ok.
-
 init_per_testcase(TC,Config) when TC == t_sendfile_recvduring;
 				  TC == t_sendfile_sendduring ->
     Filename = proplists:get_value(small_file, Config),
 
     Send = fun(Sock) ->
 		   {_Size, Data} = sendfile_file_info(Filename),
-		   {ok,D} = file:open(Filename, [raw,binary,read]),
-		   prim_file:sendfile(D, Sock, 0, 0, 0,
-				      [],[],[]),
+		   {ok,Fd} = file:open(Filename, [raw,binary,read]),
+                   %% Determine whether the driver has native support by
+                   %% hitting the raw module directly; file:sendfile/5 will
+                   %% land in the fallback if it doesn't.
+                   RawModule = Fd#file_descriptor.module,
+                   {ok, _Ignored} = RawModule:sendfile(Fd,Sock,0,0,0,[],[],[]),
 		   Data
 	   end,
 
@@ -105,9 +106,8 @@ init_per_testcase(TC,Config) when TC == t_sendfile_recvduring;
 	    ct:log("Error: ~p",[Error]),
 	    {skip,"Not supported"}
     end;
-init_per_testcase(_Tc,Config) ->
-    Config ++ [{sendfile_opts,[{use_threads,false}]}].
-
+init_per_testcase(_TC,Config) ->
+    Config.
 
 t_sendfile_small(Config) when is_list(Config) ->
     Filename = proplists:get_value(small_file, Config),
@@ -124,7 +124,7 @@ t_sendfile_small(Config) when is_list(Config) ->
 t_sendfile_many_small(Config) when is_list(Config) ->
     Filename = proplists:get_value(small_file, Config),
     FileOpts = proplists:get_value(file_opts, Config, []),
-    SendfileOpts = proplists:get_value(sendfile_opts, Config),
+    SendfileOpts = proplists:get_value(sendfile_opts, Config, []),
 
     error_logger:add_report_handler(?MODULE,[self()]),
 
@@ -151,7 +151,7 @@ t_sendfile_many_small(Config) when is_list(Config) ->
 
 t_sendfile_big_all(Config) when is_list(Config) ->
     Filename = proplists:get_value(big_file, Config),
-    SendfileOpts = proplists:get_value(sendfile_opts, Config),
+    SendfileOpts = proplists:get_value(sendfile_opts, Config, []),
 
     Send = fun(Sock) ->
 		   {ok, #file_info{size = Size}} =
@@ -165,7 +165,7 @@ t_sendfile_big_all(Config) when is_list(Config) ->
 t_sendfile_big_size(Config) ->
     Filename = proplists:get_value(big_file, Config),
     FileOpts = proplists:get_value(file_opts, Config, []),
-    SendfileOpts = proplists:get_value(sendfile_opts, Config),
+    SendfileOpts = proplists:get_value(sendfile_opts, Config, []),
 
     SendAll = fun(Sock) ->
 		      {ok, #file_info{size = Size}} =
@@ -180,7 +180,7 @@ t_sendfile_big_size(Config) ->
 t_sendfile_partial(Config) ->
     Filename = proplists:get_value(small_file, Config),
     FileOpts = proplists:get_value(file_opts, Config, []),
-    SendfileOpts = proplists:get_value(sendfile_opts, Config),
+    SendfileOpts = proplists:get_value(sendfile_opts, Config, []),
 
     SendSingle = fun(Sock) ->
 			 {_Size, <<Data:5/binary,_/binary>>} =
@@ -217,7 +217,7 @@ t_sendfile_partial(Config) ->
 t_sendfile_offset(Config) ->
     Filename = proplists:get_value(small_file, Config),
     FileOpts = proplists:get_value(file_opts, Config, []),
-    SendfileOpts = proplists:get_value(sendfile_opts, Config),
+    SendfileOpts = proplists:get_value(sendfile_opts, Config, []),
 
     Send = fun(Sock) ->
 		   {_Size, <<_:5/binary,Data:3/binary,_/binary>> = AllData} =
@@ -233,7 +233,7 @@ t_sendfile_offset(Config) ->
 
 t_sendfile_sendafter(Config) ->
     Filename = proplists:get_value(small_file, Config),
-    SendfileOpts = proplists:get_value(sendfile_opts, Config),
+    SendfileOpts = proplists:get_value(sendfile_opts, Config, []),
 
     Send = fun(Sock) ->
 		   {Size, Data} = sendfile_file_info(Filename),
@@ -246,7 +246,7 @@ t_sendfile_sendafter(Config) ->
 
 t_sendfile_recvafter(Config) ->
     Filename = proplists:get_value(small_file, Config),
-    SendfileOpts = proplists:get_value(sendfile_opts, Config),
+    SendfileOpts = proplists:get_value(sendfile_opts, Config, []),
 
     Send = fun(Sock) ->
 		   {Size, Data} = sendfile_file_info(Filename),
@@ -279,7 +279,7 @@ t_sendfile_recvafter_remoteclose(Config) ->
 
 t_sendfile_sendduring(Config) ->
     Filename = proplists:get_value(big_file, Config),
-    SendfileOpts = proplists:get_value(sendfile_opts, Config),
+    SendfileOpts = proplists:get_value(sendfile_opts, Config, []),
 
     Send = fun(Sock) ->
 		   {ok, #file_info{size = Size}} =
@@ -296,7 +296,7 @@ t_sendfile_sendduring(Config) ->
 
 t_sendfile_recvduring(Config) ->
     Filename = proplists:get_value(big_file, Config),
-    SendfileOpts = proplists:get_value(sendfile_opts, Config),
+    SendfileOpts = proplists:get_value(sendfile_opts, Config, []),
 
     Send = fun(Sock) ->
 		   {ok, #file_info{size = Size}} =
@@ -315,7 +315,7 @@ t_sendfile_recvduring(Config) ->
 
 t_sendfile_closeduring(Config) ->
     Filename = proplists:get_value(big_file, Config),
-    SendfileOpts = proplists:get_value(sendfile_opts, Config),
+    SendfileOpts = proplists:get_value(sendfile_opts, Config, []),
 
     Send = fun(Sock,SFServPid) ->
 		   spawn_link(fun() ->
@@ -345,7 +345,7 @@ t_sendfile_closeduring(Config) ->
 
 t_sendfile_crashduring(Config) ->
     Filename = proplists:get_value(big_file, Config),
-    SendfileOpts = proplists:get_value(sendfile_opts, Config),
+    SendfileOpts = proplists:get_value(sendfile_opts, Config, []),
 
     error_logger:add_report_handler(?MODULE,[self()]),
 
@@ -373,6 +373,36 @@ t_sendfile_crashduring(Config) ->
 		end
 	end.
 
+t_sendfile_arguments(Config) ->
+    Filename = proplists:get_value(small_file, Config),
+
+    {ok, Listener} = gen_tcp:listen(0,
+        [{packet, 0}, {active, false}, {reuseaddr, true}]),
+    {ok, Port} = inet:port(Listener),
+
+    ErrorCheck =
+        fun(Reason, Offset, Length, Opts) ->
+            {ok, Sender} = gen_tcp:connect({127, 0, 0, 1}, Port,
+                [{packet, 0}, {active, false}]),
+            {ok, Receiver} = gen_tcp:accept(Listener),
+            {ok, Fd} = file:open(Filename, [read, raw]),
+            {error, Reason} = file:sendfile(Fd, Sender, Offset, Length, Opts),
+            gen_tcp:close(Receiver),
+            gen_tcp:close(Sender),
+            file:close(Fd)
+        end,
+
+    ErrorCheck(einval, -1, 0, []),
+    ErrorCheck(einval, 0, -1, []),
+    ErrorCheck(badarg, gurka, 0, []),
+    ErrorCheck(badarg, 0, gurka, []),
+    ErrorCheck(badarg, 0, 0, gurka),
+    ErrorCheck(badarg, 0, 0, [{chunk_size, gurka}]),
+
+    gen_tcp:close(Listener),
+
+    ok.
+
 %% Generic sendfile server code
 sendfile_send(Send) ->
     sendfile_send({127,0,0,1},Send).
diff --git a/lib/kernel/test/zlib_SUITE.erl b/lib/kernel/test/zlib_SUITE.erl
index 131a0685cd..f203ef878f 100644
--- a/lib/kernel/test/zlib_SUITE.erl
+++ b/lib/kernel/test/zlib_SUITE.erl
@@ -166,7 +166,7 @@ api_deflateInit(Config) when is_list(Config) ->
 			  ?m(ok, zlib:deflateInit(Z12,default,deflated,-Wbits,8,default)),
 			  ?m(ok,zlib:close(Z11)),
 			  ?m(ok,zlib:close(Z12))
-		  end, lists:seq(8, 15)),
+		  end, lists:seq(9, 15)),
 
     lists:foreach(fun(MemLevel) ->
 			  Z = zlib:open(),
@@ -213,12 +213,46 @@ api_deflateReset(Config) when is_list(Config) ->
 
 %% Test deflateParams.
 api_deflateParams(Config) when is_list(Config) ->
+    Levels = [none, default, best_speed, best_compression] ++ lists:seq(0, 9),
+    Strategies = [filtered, huffman_only, rle, default],
+
     Z1 = zlib:open(),
     ?m(ok, zlib:deflateInit(Z1, default)),
-    ?m(L when is_list(L), zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, none)),
-    ?m(ok, zlib:deflateParams(Z1, best_compression, huffman_only)),
-    ?m(L when is_list(L), zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, sync)),
-    ?m(ok, zlib:close(Z1)).
+
+    ApiTest =
+        fun(Level, Strategy) ->
+            ?m(ok, zlib:deflateParams(Z1, Level, Strategy)),
+            ?m(ok, zlib:deflateReset(Z1))
+        end,
+
+    [ ApiTest(Level, Strategy) || Level <- Levels, Strategy <- Strategies ],
+
+    ?m(ok, zlib:close(Z1)),
+
+    FlushTest =
+        fun FlushTest(Size, Level, Strategy) ->
+            Z = zlib:open(),
+            ok = zlib:deflateInit(Z, default),
+            Data = gen_determ_rand_bytes(Size),
+            case zlib:deflate(Z, Data, none) of
+                [<<120, 156>>] ->
+                    %% All data is present in the internal zlib state, and will
+                    %% be flushed on deflateParams.
+
+                    ok = zlib:deflateParams(Z, Level, Strategy),
+                    Compressed = [<<120, 156>>, zlib:deflate(Z, <<>>, finish)],
+                    Data = zlib:uncompress(Compressed),
+                    zlib:close(Z),
+
+                    FlushTest(Size + (1 bsl 10), Level, Strategy);
+                _Other ->
+                    ok
+            end
+        end,
+
+    [ FlushTest(1, Level, Strategy) || Level <- Levels, Strategy <- Strategies ],
+
+    ok.
 
 %% Test deflate.
 api_deflate(Config) when is_list(Config) ->
@@ -652,6 +686,11 @@ api_g_un_zip(Config) when is_list(Config) ->
     Concatenated = <<Bin/binary, Bin/binary>>,
     ?m(Concatenated, zlib:gunzip([Comp, Comp])),
 
+    %% Don't explode if the uncompressed size is a perfect multiple of the
+    %% internal inflate chunk size.
+    ChunkSizedData = <<0:16384/unit:8>>,
+    ?m(ChunkSizedData, zlib:gunzip(zlib:gzip(ChunkSizedData))),
+
     %% Bad CRC; bad length.
     BadCrc = bad_crc_data(),
     ?m(?EXIT(data_error),(catch zlib:gunzip(BadCrc))),
@@ -762,13 +801,13 @@ zip_usage({run,ZIP,ORIG}) ->
 
     ?m(ok, zlib:deflateInit(Z, default, deflated, -15, 8, default)),
     C2 = zlib:deflate(Z, ORIG, finish),
-    ?m(true, C1 == list_to_binary(C2)),
+    ?m(ORIG, zlib:unzip(C2)),
     ?m(ok, zlib:deflateEnd(Z)),
 
     ?m(ok, zlib:deflateInit(Z, none, deflated, -15, 8, filtered)),
     ?m(ok, zlib:deflateParams(Z, default, default)),
     C3 = zlib:deflate(Z, ORIG, finish),
-    ?m(true, C1 == list_to_binary(C3)),
+    ?m(ORIG, zlib:unzip(C3)),
     ?m(ok, zlib:deflateEnd(Z)),
 
     ok = zlib:close(Z),
@@ -978,23 +1017,37 @@ split_bin(Last,Acc) ->
 
 only_allow_owner(Config) when is_list(Config) ->
     Z = zlib:open(),
+    Owner = self(),
 
     ?m(ok, zlib:inflateInit(Z)),
     ?m(ok, zlib:inflateReset(Z)),
 
     {Pid, Ref} = spawn_monitor(
         fun() ->
-            ?m(?EXIT(not_on_controlling_process), zlib:inflateReset(Z))
+            ?m(?EXIT(not_on_controlling_process), zlib:inflateReset(Z)),
+            Owner ! '$transfer_ownership',
+            receive
+                '$ownership_transferred' ->
+                    ?m(ok, zlib:inflateReset(Z))
+            after 200 ->
+                ct:fail("Never received transfer signal.")
+            end
         end),
+    ownership_transfer_check(Z, Pid, Ref).
 
+ownership_transfer_check(Z, WorkerPid, Ref) ->
     receive
-        {'DOWN', Ref, process, Pid, _Reason} ->
-            ok
+        '$transfer_ownership' ->
+            zlib:set_controlling_process(Z, WorkerPid),
+            WorkerPid ! '$ownership_transferred',
+            ownership_transfer_check(Z, WorkerPid, Ref);
+        {'DOWN', Ref, process, WorkerPid, normal} ->
+            ok;
+        {'DOWN', Ref, process, WorkerPid, Reason} ->
+            ct:fail("Spawned worker crashed with reason ~p.", [Reason])
     after 200 ->
         ct:fail("Spawned worker timed out.")
-    end,
-
-    ?m(ok, zlib:inflateReset(Z)).
+    end.
 
 sub_heap_binaries(Config) when is_list(Config) ->
     Compressed = zlib:compress(<<"gurka">>),
diff --git a/lib/kernel/vsn.mk b/lib/kernel/vsn.mk
index cef54dd41a..106bda01ca 100644
--- a/lib/kernel/vsn.mk
+++ b/lib/kernel/vsn.mk
@@ -1 +1 @@
-KERNEL_VSN = 5.4
+KERNEL_VSN = 5.4.1
diff --git a/lib/megaco/doc/src/Makefile b/lib/megaco/doc/src/Makefile
index 8b9ce31d0e..43704cddf4 100644
--- a/lib/megaco/doc/src/Makefile
+++ b/lib/megaco/doc/src/Makefile
@@ -1,7 +1,7 @@
-# 
+#
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 2000-2016. All Rights Reserved.
+# Copyright Ericsson AB 2000-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -43,7 +43,7 @@ include files.mk
 # ----------------------------------------------------
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
 INTERNAL_HTML_FILES = $(TECHNICAL_DESCR_FILES:%.xml=$(HTMLDIR)/%.html)
 
@@ -70,10 +70,6 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
-INDEX_FILE   = index.html
-INDEX_SRC    = $(INDEX_FILE).src
-INDEX_TARGET = $(DOCDIR)/$(INDEX_FILE)
-
 STANDARD_DIR = ../standard
 STANDARDS = $(STANDARD_DIR)/rfc3525.txt \
             $(STANDARD_DIR)/rfc4234.txt \
@@ -81,10 +77,10 @@ STANDARDS = $(STANDARD_DIR)/rfc3525.txt \
             $(STANDARD_DIR)/implementors_guide_v10-13.pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 
 # ----------------------------------------------------
@@ -101,7 +97,7 @@ $(HTMLDIR)/%.png: %.png
 
 docs: pdf html man
 
-ldocs: local_docs $(INDEX_TARGET)
+ldocs: local_docs
 
 $(TOP_PDF_FILE): $(XML_FILES)
 
@@ -121,22 +117,14 @@ clean_html:
 
 imgs: $(IMG_FILES:%=$(HTMLDIR)/%)
 
-man: $(MAN3_FILES) 
-
-$(INDEX_TARGET): $(INDEX_SRC) $(APP_FILE)
-	sed -e 's/%VSN%/$(VSN)/' \
-            -e 's/%ERLANG_SITE%/www\.erlang\.se\//' \
-            -e 's/%UP_ONE_LEVEL%/..\/..\/..\/doc\/index.html/' \
-            -e 's/%OFF_PRINT%/pdf\/megaco-$(VSN).pdf/' $< > $@
+man: $(MAN3_FILES)
 
-debug opt: 
+debug opt:
 
 info:
 	@echo "->Makefile<-"
 	@echo ""
-	@echo "INDEX_FILE   = $(INDEX_FILE)"
-	@echo "INDEX_SRC    = $(INDEX_SRC)"
-	@echo "INDEX_TARGET = $(INDEX_TARGET)"
+	@echo "HTML_REF_MAN_FILE   = $(HTML_REF_MAN_FILE)"
 	@echo ""
 	@echo "XML_APPLICATION_FILES = $(XML_APPLICATION_FILES)"
 	@echo "XML_PART_FILES        = $(XML_PART_FILES)"
@@ -158,7 +146,7 @@ info:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -193,4 +181,3 @@ $(HTMLDIR)/megaco_transport_mechanisms.html: megaco_transport_mechanisms.xml
 $(HTMLDIR)/megaco_transport.html: megaco_transport.xml
 $(HTMLDIR)/megaco_udp.html: megaco_udp.xml
 $(HTMLDIR)/megaco_user.html: megaco_user.xml
-
diff --git a/lib/megaco/doc/src/book.gif b/lib/megaco/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/megaco/doc/src/book.gif
+++ /dev/null
diff --git a/lib/megaco/doc/src/book.xml b/lib/megaco/doc/src/book.xml
index 47ad9b6a5e..9c304d6cae 100644
--- a/lib/megaco/doc/src/book.xml
+++ b/lib/megaco/doc/src/book.xml
@@ -11,7 +11,7 @@
       Licensed under the Apache License, Version 2.0 (the "License");
       you may not use this file except in compliance with the License.
       You may obtain a copy of the License at
- 
+
           http://www.apache.org/licenses/LICENSE-2.0
 
       Unless required by applicable law or agreed to in writing, software
@@ -19,7 +19,7 @@
       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
       See the License for the specific language governing permissions and
       limitations under the License.
-    
+
     </legalnotice>
 
     <title>Megaco/H.248</title>
@@ -46,4 +46,3 @@
   </releasenotes>
   <index></index>
 </book>
-
diff --git a/lib/megaco/doc/src/fascicules.xml b/lib/megaco/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/megaco/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/megaco/doc/src/files.mk b/lib/megaco/doc/src/files.mk
index 5e7d849ab6..e40889c3fb 100644
--- a/lib/megaco/doc/src/files.mk
+++ b/lib/megaco/doc/src/files.mk
@@ -2,7 +2,7 @@
 
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 2001-2016. All Rights Reserved.
+# Copyright Ericsson AB 2001-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -36,9 +36,7 @@ XML_REF3_FILES = \
 	megaco_udp.xml
 
 XML_PART_FILES =       \
-	part.xml       \
-        part_notes.xml \
-        part_notes_history.xml
+	part.xml
 
 XML_EXTRA_FILES = \
 	notes_history.xml
@@ -61,11 +59,6 @@ IMG_FILES = \
 	single_node_config.gif \
 	distr_node_config.gif \
 	megaco_sys_arch.gif \
-	user_guide.gif \
-	note.gif \
-	notes.gif \
-	ref_man.gif \
-	book.gif \
 	MG-startup_flow_noMID.gif \
 	MGC_startup_call_flow.gif \
 	MG_startup_call_flow.gif \
diff --git a/lib/megaco/doc/src/index.html.src b/lib/megaco/doc/src/index.html.src
deleted file mode 100644
index b3ff9c3ae7..0000000000
--- a/lib/megaco/doc/src/index.html.src
+++ /dev/null
@@ -1,113 +0,0 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<!-- This file is obsolete -->
-<HTML>
-<!-- 
- ``Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
-     http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
- 
- The Initial Developer of the Original Code is Ericsson Utvecklings AB.
- Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
- AB. All Rights Reserved.''
- 
-     $Id$
--->
-<HEAD>
-<TITLE>Megaco %VSN%</TITLE>
-</HEAD>
-
-<BODY BGCOLOR="#FFFFFF">
-
-<CENTER>
-<A HREF="http://%ERLANG_SITE%">
-  <IMG ALT="Erlang/OTP" BORDER=0 SRC="html/min_head.gif">
-</A><BR>
-
-<FONT SIZE="-1">
-[<A HREF="%UP_ONE_LEVEL%">Up</A> |
-<A HREF="http://%ERLANG_SITE%">Erlang/OTP</A>]
-</FONT><BR>
-
-<P><FONT SIZE="+3">Megaco</FONT><BR>
-Version %VSN%
-</CENTER>
-
-<P><TABLE>
-<TR>
-<TD>
-<!-- IMG ALIGN=LEFT ALT="MEGACO" SRC="html/megaco.gif" -->
-</TD>
-
-<TD>
-    <p>The <STRONG>Megaco</STRONG> application is a framework
-for building applications on top of the Megaco/H.248 protocol.</p>  
-</TD>
-</TR>
-</TABLE>
-
-<P><CENTER>
-<TABLE CELLPADDING=15>
-<TR>
-<TD ALIGN=CENTER>
-<A HREF="html/users_guide.html">
-  <IMG ALT="User's Guide" BORDER=0 SRC="html/user_guide.gif">
-</A>
-<BR>
-<FONT SIZE="-1">
-<A HREF="html/users_guide.html">User's Guide</A>
-</FONT>
-</TD>
-
-<TD ALIGN=CENTER>
-<A HREF="html/index.html">
-  <IMG ALT="Reference Manual" BORDER=0 SRC="html/ref_man.gif">
-</A>
-<BR>
-<FONT SIZE="-1">
-<A HREF="html/index.html">Reference Manual</A>
-</FONT>
-</TD>
-
-</TR>
-
-<TR>
-<TD ALIGN=CENTER>
-<A HREF="html/release_notes.html">
-  <IMG ALT="Release Notes" BORDER=0 SRC="html/notes.gif">
-</A>
-<BR>
-<FONT SIZE="-1">
-<A HREF="html/release_notes.html">Release Notes</A>
-</FONT>
-</TD>
-
-<TD ALIGN=CENTER>
-<A HREF="%OFF_PRINT%">
-  <IMG ALT="Off-Print" BORDER=0 SRC="html/book.gif">
-</A>
-<BR>
-<FONT SIZE="-1">
-<A HREF="%OFF_PRINT%">Off-Print</A>
-</FONT>
-</TD>
-</TR>
-</TABLE>
-</CENTER>
-
-<P><CENTER>
-<HR>
-<FONT SIZE="-1">
-Copyright &copy; 1991-2001
-<A HREF="http://www.erlang.se/">Ericsson Utvecklings AB</A>
-</FONT>
-</CENTER>
-</BODY>
-</HTML>
diff --git a/lib/megaco/doc/src/note.gif b/lib/megaco/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/megaco/doc/src/note.gif
+++ /dev/null
diff --git a/lib/megaco/doc/src/notes.gif b/lib/megaco/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/megaco/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/megaco/doc/src/notes.xml b/lib/megaco/doc/src/notes.xml
index 068389c0c2..54e048a172 100644
--- a/lib/megaco/doc/src/notes.xml
+++ b/lib/megaco/doc/src/notes.xml
@@ -11,7 +11,7 @@
       Licensed under the Apache License, Version 2.0 (the "License");
       you may not use this file except in compliance with the License.
       You may obtain a copy of the License at
- 
+
           http://www.apache.org/licenses/LICENSE-2.0
 
       Unless required by applicable law or agreed to in writing, software
@@ -19,9 +19,9 @@
       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
       See the License for the specific language governing permissions and
       limitations under the License.
-      
+
     </legalnotice>
-    
+
     <title>Megaco Release Notes</title>
     <prepared>Lars Thors&eacute;n, H&aring;kan Mattsson, Micael Karlberg</prepared>
     <docno></docno>
@@ -35,9 +35,24 @@
   bugfixes for every release of Megaco. Each release of Megaco
   thus constitutes one section in this document. The title of each
   section is the version number of Megaco.</p>
-  
-  
-  <section><title>Megaco 3.18.2</title>
+
+
+  <section><title>Megaco 3.18.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Megaco 3.18.2</title>
 
     <section><title>Improvements and New Features</title>
       <list>
@@ -142,7 +157,7 @@
       </item>
     </list>
     </section>
-  
+
   </section>
 
   <section><title>Megaco 3.17.0.2</title>
@@ -158,7 +173,7 @@
       </item>
     </list>
     </section>
-  
+
   </section>
 
   <section><title>Megaco 3.17.0.1</title>
@@ -190,7 +205,7 @@
       <list type="bulleted">
         <item>
           <p>Allow whitespaces in installation path. </p>
-          <p>It is now possible to give configure and make an 
+          <p>It is now possible to give configure and make an
 	  installation/release path with whitespaces in it. </p>
           <p>Own Id: OTP-10107</p>
         </item>
@@ -202,24 +217,24 @@
 
     <section>
       <title>Fixed bugs and malfunctions</title>
-      
+
  <!--
       <p>-</p>
  -->
-      
+
       <list type="bulleted">
 	<item>
-          <p>Buffer overrun error while flex scanner processing 
+          <p>Buffer overrun error while flex scanner processing
 	  property parm groups. </p>
-          <p>This error occured only for large messages if a 
-	  buffer realloc was needed while processing the 
+          <p>This error occured only for large messages if a
+	  buffer realloc was needed while processing the
 	  property parm groups. </p>
           <p>Own Id: OTP-10998</p>
           <p>Aux Id: Seq 12263</p>
 	</item>
-	
+
       </list>
-      
+
     </section>
 
     <section>
@@ -229,10 +244,10 @@
 <!--
       <list type="bulleted">
         <item>
-	  <p>A number of binary encoding alternatives has been removed. 
+	  <p>A number of binary encoding alternatives has been removed.
 	  The binary encoding option <c>driver</c> has been removed
-	  since this (the use of the asn1 linked in driver) is 
-	  now default and there is now way to <em>not</em> use it. 
+	  since this (the use of the asn1 linked in driver) is
+	  now default and there is now way to <em>not</em> use it.
 	  See <seealso marker="megaco_encode#binary_config">configuration of binary encoding</seealso> for more info. </p>
         </item>
 
@@ -270,19 +285,19 @@
 
     <section>
       <title>Fixed bugs and malfunctions</title>
-      
+
       <p>-</p>
-      
+
  <!--
       <list type="bulleted">
 	<item>
 	  <p>Fixing miscellaneous things detected by dialyzer. </p>
 	  <p>Own Id: OTP-9075</p>
 	</item>
-	
+
       </list>
  -->
-      
+
     </section>
 
     <section>
@@ -293,10 +308,10 @@
 
       <list type="bulleted">
         <item>
-	  <p>A number of binary encoding alternatives has been removed. 
+	  <p>A number of binary encoding alternatives has been removed.
 	  The binary encoding option <c>driver</c> has been removed
-	  since this (the use of the asn1 linked in driver) is 
-	  now default and there is now way to <em>not</em> use it. 
+	  since this (the use of the asn1 linked in driver) is
+	  now default and there is now way to <em>not</em> use it.
 	  See <seealso marker="megaco_encode#binary_config">configuration of binary encoding</seealso> for more info. </p>
         </item>
 
@@ -322,7 +337,7 @@
       <list type="bulleted">
         <item>
           <p>Allow whitespaces in installation path. </p>
-          <p>It is now possible to give configure and make an 
+          <p>It is now possible to give configure and make an
 	  installation/release path with whitespaces in it. </p>
           <p>Own Id: OTP-10107</p>
         </item>
@@ -332,8 +347,8 @@
         </item>
 
         <item>
-          <p>Removed use of deprecated system flag, 
-	  <c>global_haeps_size</c>, in the measurement tool 
+          <p>Removed use of deprecated system flag,
+	  <c>global_haeps_size</c>, in the measurement tool
 	  <c>mstone1</c>. </p>
         </item>
 
@@ -343,19 +358,19 @@
 
     <section>
       <title>Fixed bugs and malfunctions</title>
-      
+
       <p>-</p>
-      
+
  <!--
       <list type="bulleted">
 	<item>
 	  <p>Fixing miscellaneous things detected by dialyzer. </p>
 	  <p>Own Id: OTP-9075</p>
 	</item>
-	
+
       </list>
  -->
-      
+
     </section>
 
     <section>
@@ -365,8 +380,8 @@
 <!--
       <list type="bulleted">
         <item>
-	  <p>Due to the change in the flex driver API, 
-	  we may no longer be able to build and/or use 
+	  <p>Due to the change in the flex driver API,
+	  we may no longer be able to build and/or use
 	  the flex driver without reentrant support. </p>
           <p>Own Id: OTP-9795</p>
         </item>
@@ -400,8 +415,8 @@
         </item>
 
         <item>
-          <p>Removed use of deprecated system flag, 
-	  <c>scheduler_bind_type</c>, in the measurement tool 
+          <p>Removed use of deprecated system flag,
+	  <c>scheduler_bind_type</c>, in the measurement tool
 	  <c>mstone1</c>. </p>
           <p>Own Id: OTP-9949</p>
         </item>
@@ -412,19 +427,19 @@
 
     <section>
       <title>Fixed bugs and malfunctions</title>
-      
+
       <p>-</p>
-      
+
  <!--
       <list type="bulleted">
 	<item>
 	  <p>Fixing miscellaneous things detected by dialyzer. </p>
 	  <p>Own Id: OTP-9075</p>
 	</item>
-	
+
       </list>
  -->
-      
+
     </section>
 
     <section>
@@ -434,8 +449,8 @@
 <!--
       <list type="bulleted">
         <item>
-	  <p>Due to the change in the flex driver API, 
-	  we may no longer be able to build and/or use 
+	  <p>Due to the change in the flex driver API,
+	  we may no longer be able to build and/or use
 	  the flex driver without reentrant support. </p>
           <p>Own Id: OTP-9795</p>
         </item>
@@ -467,8 +482,8 @@
         </item>
 
         <item>
-	  <p>ASN.1 no longer makes use of a driver to accelerate encode/decode, 
-	  instead it uses NIFs. The encoding config option is <em>still</em> 
+	  <p>ASN.1 no longer makes use of a driver to accelerate encode/decode,
+	  instead it uses NIFs. The encoding config option is <em>still</em>
 	  the same, i.e. <c>driver</c>. </p>
           <p>Own Id: OTP-9672</p>
         </item>
@@ -491,19 +506,19 @@
 
     <section>
       <title>Fixed bugs and malfunctions</title>
-      
+
       <p>-</p>
-      
+
  <!--
       <list type="bulleted">
 	<item>
 	  <p>Fixing miscellaneous things detected by dialyzer. </p>
 	  <p>Own Id: OTP-9075</p>
 	</item>
-	
+
       </list>
  -->
-      
+
     </section>
 
     <section>
@@ -513,8 +528,8 @@
 <!--
       <list type="bulleted">
         <item>
-	  <p>Due to the change in the flex driver API, 
-	  we may no longer be able to build and/or use 
+	  <p>Due to the change in the flex driver API,
+	  we may no longer be able to build and/or use
 	  the flex driver without reentrant support. </p>
           <p>Own Id: OTP-9795</p>
         </item>
@@ -551,19 +566,19 @@
 
     <section>
       <title>Fixed bugs and malfunctions</title>
-      
+
       <p>-</p>
-      
+
  <!--
       <list type="bulleted">
 	<item>
 	  <p>Fixing miscellaneous things detected by dialyzer. </p>
 	  <p>Own Id: OTP-9075</p>
 	</item>
-	
+
       </list>
  -->
-      
+
     </section>
 
   </section> <!-- 3.15.1.1 -->
@@ -582,8 +597,8 @@
 <!--
       <list type="bulleted">
         <item>
-          <p>Updated the 
-            <seealso marker="megaco_performance">performance</seealso> 
+          <p>Updated the
+            <seealso marker="megaco_performance">performance</seealso>
             chapter. </p>
           <p>Own Id: OTP-8696</p>
         </item>
@@ -637,7 +652,7 @@
 <!--
       <list type="bulleted">
         <item>
-          <p>Eliminated a possible race condition while creating 
+          <p>Eliminated a possible race condition while creating
             pending counters. </p>
           <p>Own Id: OTP-8634</p>
 	  <p>Aux Id: Seq 11579</p>
@@ -666,8 +681,8 @@
 
       <list type="bulleted">
         <item>
-          <p>Updated the 
-            <seealso marker="megaco_performance">performance</seealso> 
+          <p>Updated the
+            <seealso marker="megaco_performance">performance</seealso>
             chapter. </p>
           <p>Own Id: OTP-8696</p>
         </item>
@@ -694,14 +709,14 @@
 
         <item>
           <p>Fix shared libraries installation. </p>
-          <p>The flex shared lib(s) were incorrectly installed as data 
+          <p>The flex shared lib(s) were incorrectly installed as data
             files. </p>
           <p>Peter Lemenkov</p>
           <p>Own Id: OTP-8627</p>
         </item>
 
         <item>
-          <p>Eliminated a possible race condition while creating 
+          <p>Eliminated a possible race condition while creating
             pending counters. </p>
           <p>Own Id: OTP-8634</p>
 	  <p>Aux Id: Seq 11579</p>
@@ -757,14 +772,14 @@
 
         <item>
           <p>Fix shared libraries installation. </p>
-          <p>The flex shared lib(s) were incorrectly installed as data 
+          <p>The flex shared lib(s) were incorrectly installed as data
             files. </p>
           <p>Peter Lemenkov</p>
           <p>Own Id: OTP-8627</p>
         </item>
 
         <item>
-          <p>Eliminated a possible race condition while creating 
+          <p>Eliminated a possible race condition while creating
             pending counters. </p>
           <p>Own Id: OTP-8634</p>
 	  <p>Aux Id: Seq 11579</p>
@@ -792,18 +807,18 @@
 
       <list type="bulleted">
         <item>
-          <p>Various changes to configure and makefile(s) to facilitate cross 
+          <p>Various changes to configure and makefile(s) to facilitate cross
             compilation (and other build system improvements). </p>
           <p>Own Id: OTP-8323</p>
         </item>
 
         <item>
-          <p>Added a help target in the test Makefile to explain 
-            the most useful make targets, used when testing the 
+          <p>Added a help target in the test Makefile to explain
+            the most useful make targets, used when testing the
             application using the test-server provided with megaco.</p>
           <p>Own Id: OTP-8362</p>
         </item>
- 
+
         <item>
           <p>Adapted megaco_filter to the new internal format.</p>
           <p>Own Id: OTP-8403</p>
@@ -820,16 +835,16 @@
 
       <list type="bulleted">
         <item>
-          <p>Callbacks, when the callback module is unknown (undefined), 
+          <p>Callbacks, when the callback module is unknown (undefined),
             results in warning messages. </p>
           <p>A race condition scenario. As part of a cancelation operation,
             replies with waiting acknowledgements is cancelled. This includes
-            informing the user (via a call to the handle_trans_ack callback 
-            function). It is possible that at this point the connection data 
-            has been removed, which makes it impossible for megaco to 
-            perform this operation, resulting in the warning message. The 
-            solution is to also store the callback module with the other 
-            reply information, to be used when cleaning up after a 
+            informing the user (via a call to the handle_trans_ack callback
+            function). It is possible that at this point the connection data
+            has been removed, which makes it impossible for megaco to
+            perform this operation, resulting in the warning message. The
+            solution is to also store the callback module with the other
+            reply information, to be used when cleaning up after a
             cancelation. </p>
           <p>Own Id: OTP-8328</p>
 	  <p>Aux Id: Seq 11384</p>
@@ -863,8 +878,8 @@
         </item>
 
         <item>
-          <p>The documentation is now built with open source tools 
-            (<em>xsltproc</em> and <em>fop</em>) that exists on most 
+          <p>The documentation is now built with open source tools
+            (<em>xsltproc</em> and <em>fop</em>) that exists on most
             platforms. One visible change is that the frames are removed.</p>
           <p>Own Id: OTP-8249</p>
         </item>
@@ -910,11 +925,4 @@
     </section>
   </section> <!-- 3.13 -->
 
-
-  <!-- section>
-    <title>Release notes history</title>
-    <p>For information about older versions see
-      <url href="part_notes_history_frame.html">release notes history</url>.</p 
-  </section> -->
 </chapter>
-
diff --git a/lib/megaco/doc/src/part_notes.xml b/lib/megaco/doc/src/part_notes.xml
deleted file mode 100644
index 7a838c5718..0000000000
--- a/lib/megaco/doc/src/part_notes.xml
+++ /dev/null
@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2000</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Megaco/H.248 Release Notes</title>
-    <prepared>Lars Thors&eacute;n, H&aring;kan Mattsson, Micael Karlberg</prepared>
-    <docno></docno>
-    <date>2007-06-15</date>
-    <rev>%VSN%</rev>
-    <file>part_notes.xml</file>
-  </header>
-  <description>
-    <p>The Megaco application is a framework for building
-      applications on top of the Megaco/H.248 protocol.</p>
-    <p>For information about older versions see
-      <url href="part_notes_history_frame.html">release notes history</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/megaco/doc/src/part_notes_history.xml b/lib/megaco/doc/src/part_notes_history.xml
deleted file mode 100644
index 0d8f1f2fb5..0000000000
--- a/lib/megaco/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2006</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Megaco Release Notes History</title>
-    <prepared>Micael Karklberg</prepared>
-    <responsible>OTP</responsible>
-    <docno></docno>
-    <approved>OTP</approved>
-    <checked></checked>
-    <date>2007-06-15</date>
-    <rev>A</rev>
-    <file>part_notes_history.xml</file>
-  </header>
-  <description>
-    <p>The Megaco application is a framework for building
-      applications on top of the Megaco/H.248 protocol.</p>
-  </description>
-  <include file="notes_history"></include>
-</part>
-
diff --git a/lib/megaco/doc/src/ref_man.gif b/lib/megaco/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/megaco/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/megaco/doc/src/user_guide.gif b/lib/megaco/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/megaco/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/megaco/doc/src/warning.gif b/lib/megaco/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/megaco/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/megaco/vsn.mk b/lib/megaco/vsn.mk
index 9c6ba5bba0..a4f7de7f07 100644
--- a/lib/megaco/vsn.mk
+++ b/lib/megaco/vsn.mk
@@ -19,6 +19,6 @@
 # %CopyrightEnd%
 
 APPLICATION = megaco
-MEGACO_VSN  = 3.18.2
+MEGACO_VSN  = 3.18.3
 PRE_VSN     =
 APP_VSN     = "$(APPLICATION)-$(MEGACO_VSN)$(PRE_VSN)"
diff --git a/lib/mnesia/doc/src/Makefile b/lib/mnesia/doc/src/Makefile
index 39f2b28637..82fcf66256 100644
--- a/lib/mnesia/doc/src/Makefile
+++ b/lib/mnesia/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 1997-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 
@@ -44,12 +44,11 @@ XML_REF3_FILES = \
 	mnesia_registry.xml
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml \
-	part_notes_history.xml
+	part.xml
 
 XML_CHAPTER_FILES = \
 	Mnesia_chap1.xml \
+	Mnesia_overview.xml \
 	Mnesia_chap2.xml \
 	Mnesia_chap3.xml \
 	Mnesia_chap4.xml \
@@ -63,20 +62,12 @@ XML_CHAPTER_FILES = \
 
 BOOK_FILES = book.xml
 
-
 XML_FILES = \
 	$(BOOK_FILES) $(XML_CHAPTER_FILES) \
 	$(XML_PART_FILES) $(XML_REF3_FILES) $(XML_APPLICATION_FILES)
 
 GIF_FILES = \
-	book.gif \
-	company.gif \
-	mnesia.gif \
-	note.gif \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif \
-	warning.gif
+	company.gif
 
 XML_HTML_FILES = \
 	notes_history.xml
@@ -89,7 +80,7 @@ HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
 	$(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html)
 
 INFO_FILE = ../../info
-EXTRA_FILES = summary.html.src \
+EXTRA_FILES = \
 	$(DEFAULT_GIF_FILES) \
 	$(DEFAULT_HTML_FILES) \
 	$(XML_REF3_FILES:%.xml=$(HTMLDIR)/%.html) \
@@ -102,10 +93,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -134,11 +125,11 @@ gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 $(INDEX_TARGET): $(INDEX_SRC) ../../vsn.mk
 	sed -e 's;%VSN%;$(VSN);' $< > $@
 
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/mnesia/doc/src/book.gif b/lib/mnesia/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/mnesia/doc/src/book.gif
+++ /dev/null
diff --git a/lib/mnesia/doc/src/fascicules.xml b/lib/mnesia/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/mnesia/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/mnesia/doc/src/mnesia.gif b/lib/mnesia/doc/src/mnesia.gif
deleted file mode 100644
index fbbabee5aa..0000000000
--- a/lib/mnesia/doc/src/mnesia.gif
+++ /dev/null
diff --git a/lib/mnesia/doc/src/note.gif b/lib/mnesia/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/mnesia/doc/src/note.gif
+++ /dev/null
diff --git a/lib/mnesia/doc/src/notes.gif b/lib/mnesia/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/mnesia/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/mnesia/doc/src/notes.xml b/lib/mnesia/doc/src/notes.xml
index e9243f7fc9..ebab612b58 100644
--- a/lib/mnesia/doc/src/notes.xml
+++ b/lib/mnesia/doc/src/notes.xml
@@ -11,7 +11,7 @@
       Licensed under the Apache License, Version 2.0 (the "License");
       you may not use this file except in compliance with the License.
       You may obtain a copy of the License at
- 
+
           http://www.apache.org/licenses/LICENSE-2.0
 
       Unless required by applicable law or agreed to in writing, software
@@ -39,7 +39,23 @@
     thus constitutes one section in this document. The title of each
     section is the version number of Mnesia.</p>
 
-  <section><title>Mnesia 4.15.1</title>
+  <section><title>Mnesia 4.15.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fix backup error handling, the real failure reason was
+	    not returned.</p>
+          <p>
+	    Own Id: OTP-14776 Aux Id: ERIERL-103 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Mnesia 4.15.1</title>
 
     <section><title>Improvements and New Features</title>
       <list>
@@ -906,9 +922,9 @@
         </item>
       </list>
     </section>
-    
-  </section>  
-  
+
+  </section>
+
   <section><title>Mnesia 4.4.13</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -977,7 +993,7 @@
 
   </section>
   <section><title>Mnesia 4.4.10</title>
-    
+
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
         <item>
@@ -1007,7 +1023,7 @@
         </item>
       </list>
     </section>
-    
+
   </section>
 
 
@@ -1025,7 +1041,7 @@
         </item>
       </list>
     </section>
-    
+
   </section>
 
   <section><title>Mnesia 4.4.8</title>
@@ -1050,7 +1066,7 @@
         </item>
       </list>
     </section>
-    
+
   </section>
 
  <section><title>Mnesia 4.4.7</title>
@@ -1084,7 +1100,7 @@
 
 </section>
 
- <section><title>Mnesia 4.4.6</title>    
+ <section><title>Mnesia 4.4.6</title>
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
         <item>
@@ -1275,9 +1291,4 @@
     </section>
   </section>
 
-  <!-- section>
-    <title>Previous Notes</title>
-    <p>For information about older versions see <url href="part_notes_history_frame.html">release notes history</url>.</p>
-  </section -->
 </chapter>
-
diff --git a/lib/mnesia/doc/src/part_notes.xml b/lib/mnesia/doc/src/part_notes.xml
deleted file mode 100644
index 1e4e4bc60a..0000000000
--- a/lib/mnesia/doc/src/part_notes.xml
+++ /dev/null
@@ -1,42 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>1997</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>MNESIA Release Notes</title>
-    <prepared>Claes Wikstr&ouml;m, Hans Nilsson and H&aring;kan Mattsson</prepared>
-    <docno></docno>
-    <date>1997-05-27</date>
-    <rev>1.2</rev>
-    <file>part_notes.xml</file>
-  </header>
-  <description>
-    <p><em>Mnesia</em> is a Distributed DataBase Management
-      System (DBMS), appropriate for telecommunications applications and other
-      Erlang applications which require continuous operation and exhibit soft
-      real-time properties. </p>
-    <p>For information about older versions see
-      <url href="part_notes_history_frame.html">release notes history</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/mnesia/doc/src/part_notes_history.xml b/lib/mnesia/doc/src/part_notes_history.xml
deleted file mode 100644
index a1c6f5aef0..0000000000
--- a/lib/mnesia/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,42 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2004</year>
-      <year>2016</year>
-      <holder>Ericsson AB, All Rights Reserved</holder>
-    </copyright>
-    <legalnotice>
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
- 
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-  The Initial Developer of the Original Code is Ericsson AB.
-    </legalnotice>
-
-    <title>MNESIA Release Notes</title>
-    <prepared>Claes Wikstr&ouml;m, Hans Nilsson and H&aring;kan Mattsson</prepared>
-    <docno></docno>
-    <date>1997-05-27</date>
-    <rev>1.2</rev>
-    <file>part_notes_history.sgml</file>
-  </header>
-  <description>
-    <p><em>Mnesia</em> is a Distributed DataBase Management
-      System (DBMS), appropriate for telecommunications applications and other
-      Erlang applications which require continuous operation and exhibit soft
-      real-time properties. </p>
-  </description>
-  <include file="notes_history"></include>
-</part>
-
diff --git a/lib/mnesia/doc/src/ref_man.gif b/lib/mnesia/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/mnesia/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/mnesia/doc/src/summary.html.src b/lib/mnesia/doc/src/summary.html.src
deleted file mode 100644
index 2941a2f46a..0000000000
--- a/lib/mnesia/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-A heavy duty real-time distributed database
\ No newline at end of file
diff --git a/lib/mnesia/doc/src/user_guide.gif b/lib/mnesia/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/mnesia/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/mnesia/doc/src/warning.gif b/lib/mnesia/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/mnesia/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/mnesia/src/mnesia.erl b/lib/mnesia/src/mnesia.erl
index b68b2de028..95f7d4afc1 100644
--- a/lib/mnesia/src/mnesia.erl
+++ b/lib/mnesia/src/mnesia.erl
@@ -151,7 +151,8 @@
         {'snmp', SnmpStruct::term()} |
         {'storage_properties', [{Backend::module(), [BackendProp::_]}]} |
         {'type', 'set' | 'ordered_set' | 'bag'} |
-        {'local_content', boolean()}.
+        {'local_content', boolean()} |
+        {'user_properties', proplists:proplist()}.
 
 -type t_result(Res) :: {'atomic', Res} | {'aborted', Reason::term()}.
 -type activity() :: 'ets' | 'async_dirty' | 'sync_dirty' | 'transaction' | 'sync_transaction' |
@@ -2681,7 +2682,7 @@ del_table_index(Tab, Ix) ->
 
 -spec transform_table(Tab::table(), Fun, [Attr]) -> t_result(ok) when
       Attr :: atom(),
-      Fun:: fun((Record::tuple()) -> Transformed::tuple()).
+      Fun:: fun((Record::tuple()) -> Transformed::tuple()) | ignore.
 transform_table(Tab, Fun, NewA) ->
     try val({Tab, record_name}) of
 	OldRN -> mnesia_schema:transform_table(Tab, Fun, NewA, OldRN)
@@ -2692,7 +2693,7 @@ transform_table(Tab, Fun, NewA) ->
 -spec transform_table(Tab::table(), Fun, [Attr], RecName) -> t_result(ok) when
       RecName :: atom(),
       Attr :: atom(),
-      Fun:: fun((Record::tuple()) -> Transformed::tuple()).
+      Fun:: fun((Record::tuple()) -> Transformed::tuple()) | ignore.
 transform_table(Tab, Fun, NewA, NewRN) ->
     mnesia_schema:transform_table(Tab, Fun, NewA, NewRN).
 
diff --git a/lib/mnesia/src/mnesia_log.erl b/lib/mnesia/src/mnesia_log.erl
index 55b1d6e419..a2de23a2a3 100644
--- a/lib/mnesia/src/mnesia_log.erl
+++ b/lib/mnesia/src/mnesia_log.erl
@@ -752,8 +752,8 @@ abort_write(B, What, Args, Reason) ->
     Opaque = B#backup_args.opaque,
     dbg_out("Failed to perform backup. M=~p:F=~tp:A=~tp -> ~tp~n",
 	    [Mod, What, Args, Reason]),
-    try apply(Mod, abort_write, [Opaque]) of
-	{ok, _Res} -> throw({error, Reason})
+    try {ok, _Res} = apply(Mod, abort_write, [Opaque]) of
+        _ -> throw({error, Reason})
     catch _:Other ->
 	    error("Failed to abort backup. ~p:~tp~tp -> ~tp~n",
 		  [Mod, abort_write, [Opaque], Other]),
diff --git a/lib/mnesia/src/mnesia_schema.erl b/lib/mnesia/src/mnesia_schema.erl
index 83cc19c678..71952af31c 100644
--- a/lib/mnesia/src/mnesia_schema.erl
+++ b/lib/mnesia/src/mnesia_schema.erl
@@ -952,19 +952,9 @@ get_index_plugins() ->
     get_schema_user_property(mnesia_index_plugins).
 
 get_schema_user_property(Key) ->
-    Tab = schema,
-    %% Must work reliably both within transactions and outside of transactions
-    Res = case get(mnesia_activity_state) of
-	      undefined ->
-		  dirty_read_table_property(Tab, Key);
-	      _ ->
-		  do_read_table_property(Tab, Key)
-	  end,
-    case Res of
-	undefined ->
-	    [];
-	{_, Types} ->
-	    Types
+    case dirty_read_table_property(schema, Key) of
+	undefined ->  [];
+	{_, Types} -> Types
     end.
 
 get_ext_types_disc() ->
diff --git a/lib/mnesia/vsn.mk b/lib/mnesia/vsn.mk
index a95f468ba2..67afbdc0de 100644
--- a/lib/mnesia/vsn.mk
+++ b/lib/mnesia/vsn.mk
@@ -1 +1 @@
-MNESIA_VSN = 4.15.1
+MNESIA_VSN = 4.15.2
diff --git a/lib/observer/doc/src/Makefile b/lib/observer/doc/src/Makefile
index b38278a156..11bfee1bdb 100644
--- a/lib/observer/doc/src/Makefile
+++ b/lib/observer/doc/src/Makefile
@@ -9,11 +9,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # The Initial Developer of the Original Code is Ericsson Utvecklings AB.
 # Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
 # AB. All Rights Reserved.''
-# 
+#
 #     $Id$
 #
 include $(ERL_TOP)/make/target.mk
@@ -45,17 +45,15 @@ XML_REF3_FILES = \
 XML_REF6_FILES = observer_app.xml
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml \
-	part_notes_history.xml
+	part.xml
 
 XML_CHAPTER_FILES = \
+	introduction_ug.xml \
 	crashdump_ug.xml \
 	etop_ug.xml \
 	observer_ug.xml \
 	ttb_ug.xml \
-	notes.xml \
-	notes_history.xml
+	notes.xml
 
 BOOK_FILES = book.xml
 
@@ -69,9 +67,7 @@ ONLY_HTML_FILE =
 
 GIF_FILES = \
 	et_processes.gif \
-	et_modsprocs.gif \
-	note.gif
-
+	et_modsprocs.gif
 # ----------------------------------------------------
 
 HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
@@ -88,9 +84,9 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -123,12 +119,12 @@ man: $(MAN1_FILES) $(MAN3_FILES) $(MAN6_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 
@@ -148,4 +144,3 @@ release_docs_spec: docs
 
 
 release_spec:
-
diff --git a/lib/observer/doc/src/fascicules.xml b/lib/observer/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/observer/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/observer/doc/src/note.gif b/lib/observer/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/observer/doc/src/note.gif
+++ /dev/null
diff --git a/lib/observer/doc/src/notes.xml b/lib/observer/doc/src/notes.xml
index 05ea550964..96cd89b375 100644
--- a/lib/observer/doc/src/notes.xml
+++ b/lib/observer/doc/src/notes.xml
@@ -32,6 +32,73 @@
   <p>This document describes the changes made to the Observer
     application.</p>
 
+<section><title>Observer 2.6</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    A bug introduced in OTP-20 would make Crashdump Viewer
+	    crash when trying to expand an empty binary. This is now
+	    corrected.</p>
+          <p>
+	    Own Id: OTP-14642</p>
+        </item>
+        <item>
+          <p>
+	    If a match spec in the config file contained more than
+	    one clause, observer would earlier crash when trying to
+	    display it in the GUI. This is now corrected.</p>
+          <p>
+	    Own Id: OTP-14643 Aux Id: ERL-489 </p>
+        </item>
+        <item>
+	    <p>Writing of crash dumps is significantly faster.</p>
+	    <p>Maps are now included in crash dumps.</p>
+	    <p>Constants terms would only be shown in one process,
+	    while other processes referencing the same constant term
+	    would show a marker for incomplete heap. </p>
+          <p>
+	    Own Id: OTP-14685 Aux Id: OTP-14611, OTP-14603, OTP-14595 </p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+	    <p>Binaries and some other data in crash dumps are now
+	    encoded in base64 (instead of in hex), which will reduce
+	    the size of crash dumps.</p>
+	    <p>A few bugs in the handling of sub binaries in
+	    <c>crashdump_viewer</c> have been fixed.</p>
+          <p>
+	    Own Id: OTP-14686</p>
+        </item>
+        <item>
+          <p>
+	    In order to allow future improvements, Crashdump Viewer
+	    now checks the version tag of the crashdump to see that
+	    it is a known format. If the crashdump version is newer
+	    than Crashdump Viewer is prepared to read, then an
+	    information dialog is displayed before Crashdump Viewer
+	    terminates.</p>
+          <p>
+	    If an incomplete process heap is discovered in a
+	    crashdump, Crashdump Viewer will now display a warning
+	    for this, similar to the warning displayed when a
+	    crashdump is truncated. Incomplete heaps can occur if for
+	    instance the literals are not included, which is the case
+	    for all dumps prior to OTP-20.2.</p>
+          <p>
+	    Own Id: OTP-14755</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Observer 2.5</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/observer/doc/src/part_notes.xml b/lib/observer/doc/src/part_notes.xml
deleted file mode 100644
index ba15c39cda..0000000000
--- a/lib/observer/doc/src/part_notes.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Observer Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The <em>OBSERVER</em> application contains tools for tracing
-      and investigation of distributed systems.</p>
-    <p>For information about older versions, see
-      <url href="part_notes_history_frame.html">Release Notes History</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/observer/doc/src/part_notes_history.xml b/lib/observer/doc/src/part_notes_history.xml
deleted file mode 100644
index e60210924c..0000000000
--- a/lib/observer/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2006</year>
-      <year>2016</year>
-      <holder>Ericsson AB, All Rights Reserved</holder>
-    </copyright>
-    <legalnotice>
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
- 
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-  The Initial Developer of the Original Code is Ericsson AB.
-    </legalnotice>
-
-    <title>Observer Release Notes History</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The <em>OBSERVER</em> application contains tools for tracing
-      and investigation of distributed systems.</p>
-  </description>
-  <include file="notes_history"></include>
-</part>
-
diff --git a/lib/observer/src/cdv_bin_cb.erl b/lib/observer/src/cdv_bin_cb.erl
index 5502869973..a4a542297c 100644
--- a/lib/observer/src/cdv_bin_cb.erl
+++ b/lib/observer/src/cdv_bin_cb.erl
@@ -71,6 +71,8 @@ hex_binary_fun(Bin) ->
 	    plain_html(io_lib:format("~s",[S]))
     end.
 
+format_hex(<<>>,_) ->
+    [];
 format_hex(<<B1:4,B2:4>>,_) ->
     [integer_to_list(B1,16),integer_to_list(B2,16)];
 format_hex(<<B1:4,B2:4,Bin/binary>>,0) ->
diff --git a/lib/observer/src/crashdump_viewer.erl b/lib/observer/src/crashdump_viewer.erl
index 51ff69fd69..f197e72b90 100644
--- a/lib/observer/src/crashdump_viewer.erl
+++ b/lib/observer/src/crashdump_viewer.erl
@@ -26,10 +26,25 @@
 %% Tables
 %% ------
 %% cdv_dump_index_table: This table holds all tags read from the
-%% crashdump.  Each tag indicates where the information about a
-%% specific item starts.  The table entry for a tag includes the start
-%% position for this item-information. In a crash dump file, all tags
-%% start with a "=" at the beginning of a line.
+%% crashdump, except the 'binary' tag.  Each tag indicates where the
+%% information about a specific item starts.  The table entry for a
+%% tag includes the start position for this item-information. In a
+%% crash dump file, all tags start with a "=" at the beginning of a
+%% line.
+%%
+%% cdv_binary_index_table: This table holds all 'binary' tags. The hex
+%% address for each binary is converted to its integer value before
+%% storing Address -> Start Position in this table. The hex value of
+%% the address is never used for lookup.
+%%
+%% cdv_reg_proc_table: This table holds mappings between pid and
+%% registered name. This is used for timers and monitors.
+%%
+%% cdv_heap_file_chars: For each 'proc_heap' and 'literals' tag, this
+%% table contains the number of characters to read from the crash dump
+%% file. This is used for giving an indication in percent of the
+%% progress when parsing this data.
+%%
 %%
 %% Process state
 %% -------------
@@ -73,6 +88,9 @@
 -export([init/1, handle_call/3, handle_cast/2, handle_info/2, 
 	 terminate/2, code_change/3]).
 
+%% Test support
+-export([get_dump_versions/0]).
+
 %% Debug support
 -export([debug/1,stop_debug/0]).
 
@@ -87,7 +105,10 @@
 			    % line_head/1 function can return
 -define(not_available,"N/A").
 -define(binary_size_progress_limit,10000).
+-define(max_dump_version,[0,5]).
 
+%% The value of the next define must be divisible by 4.
+-define(base64_chunk_size, (4*256)).
 
 %% All possible tags - use macros in order to avoid misspelling in the code
 -define(abort,abort).
@@ -104,6 +125,7 @@
 -define(index_table,index_table).
 -define(instr_data,instr_data).
 -define(internal_ets,internal_ets).
+-define(literals,literals).
 -define(loaded_modules,loaded_modules).
 -define(memory,memory).
 -define(memory_map,memory_map).
@@ -125,6 +147,7 @@
 
 
 -record(state,{file,dump_vsn,wordsize=4,num_atoms="unknown"}).
+-record(dec_opts, {bin_addr_adj=0,base64=true}).
 
 %%%-----------------------------------------------------------------
 %%% Debugging
@@ -293,6 +316,11 @@ port(Id) ->
 expand_binary(Pos) ->
     call({expand_binary,Pos}).
 
+%%%-----------------------------------------------------------------
+%%% For testing only - called from crashdump_viewer_SUITE
+get_dump_versions() ->
+    call(get_dump_versions).
+
 %%====================================================================
 %% Server functions
 %%====================================================================
@@ -342,10 +370,12 @@ handle_call(general_info,_From,State=#state{file=File}) ->
     ets:insert(cdv_reg_proc_table,
 	       {cdv_dump_node_name,GenInfo#general_info.node_name}),
     {reply,{ok,GenInfo,TW},State#state{wordsize=WS, num_atoms=NumAtoms}};
-handle_call({expand_binary,{Offset,Size,Pos}},_From,State=#state{file=File}) ->
+handle_call({expand_binary,{Offset,Size,Pos}},_From,
+            #state{file=File,dump_vsn=DumpVsn}=State) ->
     Fd = open(File),
     pos_bof(Fd,Pos),
-    {Bin,_Line} = get_binary(Offset,Size,bytes(Fd)),
+    DecodeOpts = get_decode_opts(DumpVsn),
+    {Bin,_Line} = get_binary(Offset,Size,bytes(Fd),DecodeOpts),
     close(Fd),
     {reply,{ok,Bin},State};
 handle_call(procs_summary,_From,State=#state{file=File,wordsize=WS}) ->
@@ -418,9 +448,11 @@ handle_call(loaded_mods,_From,State=#state{file=File}) ->
     TW = truncated_warning([?mod]),
     {_CC,_OC,Mods} = loaded_mods(File),
     {reply,{ok,Mods,TW},State};
-handle_call({loaded_mod_details,Mod},_From,State=#state{file=File}) ->
+handle_call({loaded_mod_details,Mod},_From,
+            #state{dump_vsn=DumpVsn,file=File}=State) ->
     TW = truncated_warning([{?mod,Mod}]),
-    ModInfo = get_loaded_mod_details(File,Mod),
+    DecodeOpts = get_decode_opts(DumpVsn),
+    ModInfo = get_loaded_mod_details(File,Mod,DecodeOpts),
     {reply,{ok,ModInfo,TW},State};
 handle_call(funs,_From,State=#state{file=File}) ->
     TW = truncated_warning([?fu]),
@@ -454,8 +486,9 @@ handle_call(index_tables,_From,State=#state{file=File}) ->
 handle_call(schedulers,_From,State=#state{file=File}) ->
     Schedulers=schedulers(File),
     TW = truncated_warning([?scheduler]),
-    {reply,{ok,Schedulers,TW},State}.
-
+    {reply,{ok,Schedulers,TW},State};
+handle_call(get_dump_versions,_From,State=#state{dump_vsn=DumpVsn}) ->
+    {reply,{ok,{?max_dump_version,DumpVsn}},State}.
 
 
 %%--------------------------------------------------------------------
@@ -780,11 +813,12 @@ parse_vsn_str(Str,WS) ->
 
 
 %%%-----------------------------------------------------------------
-%%% Traverse crash dump and insert index in table for each heading
-%%%
-%%% Progress is reported during the time and MUST be checked with
-%%% crashdump_viewer:get_progress/0 until it returns {ok,done}.
+%%% Traverse crash dump and insert index in table for each heading.
+%%% Progress is reported during the time.
 do_read_file(File) ->
+    erase(?literals),                           %Clear literal cache.
+    put(truncated,false),                       %Not truncated (yet).
+    erase(truncated_reason),                    %Not truncated (yet).
     case file:read_file_info(File) of
 	{ok,#file_info{type=regular,
 		       access=FileA,
@@ -796,17 +830,21 @@ do_read_file(File) ->
 		    {Tag,Id,Rest,N1} = tag(Fd,TagAndRest,1),
 		    case Tag of
 			?erl_crash_dump ->
-			    reset_tables(),
-			    insert_index(Tag,Id,N1+1),
-			    put_last_tag(Tag,""),
-                            DumpVsn = [list_to_integer(L) ||
-                                          L<-string:lexemes(Id,".")],
-                            AddrAdj = get_bin_addr_adj(DumpVsn),
-                            indexify(Fd,AddrAdj,Rest,N1),
-			    end_progress(),
-			    check_if_truncated(),
-			    close(Fd),
-                            {ok,DumpVsn};
+                            case check_dump_version(Id) of
+                                {ok,DumpVsn} ->
+                                    reset_tables(),
+                                    insert_index(Tag,Id,N1+1),
+                                    put_last_tag(Tag,""),
+                                    DecodeOpts = get_decode_opts(DumpVsn),
+                                    indexify(Fd,DecodeOpts,Rest,N1),
+                                    end_progress(),
+                                    check_if_truncated(),
+                                    close(Fd),
+                                    {ok,DumpVsn};
+                                Error ->
+                                    close(Fd),
+                                    Error
+                            end;
 			_Other ->
 			    R = io_lib:format(
 				  "~ts is not an Erlang crash dump~n",
@@ -834,7 +872,19 @@ do_read_file(File) ->
 	    {error,R}
     end.
 
-indexify(Fd,AddrAdj,Bin,N) ->
+check_dump_version(Vsn) ->
+    DumpVsn = [list_to_integer(L) || L<-string:lexemes(Vsn,".")],
+    if DumpVsn > ?max_dump_version ->
+            Info =
+                "This Crashdump Viewer is too old for the given "
+                "Erlang crash dump. Please use a newer version of "
+                "Crashdump Viewer.",
+            {error,Info};
+       true ->
+            {ok,DumpVsn}
+    end.
+
+indexify(Fd,DecodeOpts,Bin,N) ->
     case binary:match(Bin,<<"\n=">>) of
 	{Start,Len} ->
 	    Pos = Start+Len,
@@ -847,7 +897,7 @@ indexify(Fd,AddrAdj,Bin,N) ->
                     %% order to minimize lookup time. Key is the
                     %% translated address.
                     {HexAddr,_} = get_hex(Id),
-                    Addr = HexAddr bor AddrAdj,
+                    Addr = HexAddr bor DecodeOpts#dec_opts.bin_addr_adj,
                     insert_binary_index(Addr,NewPos);
                 _ ->
                     insert_index(Tag,Id,NewPos)
@@ -856,9 +906,22 @@ indexify(Fd,AddrAdj,Bin,N) ->
                 {?proc_heap,LastId} ->
                     [{_,LastPos}] = lookup_index(?proc_heap,LastId),
                     ets:insert(cdv_heap_file_chars,{LastId,N+Start+1-LastPos});
+                {?literals,[]} ->
+                    case get(truncated_reason) of
+                        undefined ->
+                            [{_,LastPos}] = lookup_index(?literals,[]),
+                            ets:insert(cdv_heap_file_chars,
+                                       {literals,N+Start+1-LastPos});
+                        _ ->
+                            %% Literals are truncated. Make sure we never
+                            %% attempt to read in the literals. (Heaps that
+                            %% references literals will show markers for
+                            %% incomplete heaps, but will otherwise work.)
+                            delete_index(?literals, [])
+                    end;
                 _ -> ok
             end,
-	    indexify(Fd,AddrAdj,Rest,N1);
+	    indexify(Fd,DecodeOpts,Rest,N1);
 	nomatch ->
 	    case progress_read(Fd) of
 		{ok,Chunk0} when is_binary(Chunk0) ->
@@ -869,7 +932,7 @@ indexify(Fd,AddrAdj,Bin,N) ->
 			    _ ->
 				{Chunk0,N+byte_size(Bin)}
 			end,
-		    indexify(Fd,AddrAdj,Chunk,N1);
+		    indexify(Fd,DecodeOpts,Chunk,N1);
 		eof ->
 		    eof
 	    end
@@ -908,6 +971,7 @@ check_if_truncated() ->
 find_truncated_proc({Tag,_Id}) when Tag==?atoms;
                                     Tag==?binary;
                                     Tag==?instr_data;
+                                    Tag==?literals;
                                     Tag==?memory_status;
                                     Tag==?memory_map ->
     put(truncated_proc,false);
@@ -1065,7 +1129,7 @@ get_proc_details(File,Pid,WS,DumpVsn) ->
 	    {{Stack,MsgQ,Dict},TW} =
 		case truncated_warning([{?proc,Pid}]) of
 		    [] ->
-			{expand_memory(Fd,Pid,DumpVsn),[]};
+                        expand_memory(Fd,Pid,DumpVsn);
 		    TW0 ->
 			{{[],[],[]},TW0}
 		end,
@@ -1384,50 +1448,85 @@ maybe_other_node2(Channel) ->
 
 
 expand_memory(Fd,Pid,DumpVsn) ->
-    BinAddrAdj = get_bin_addr_adj(DumpVsn),
+    DecodeOpts = get_decode_opts(DumpVsn),
     put(fd,Fd),
-    Dict = read_heap(Fd,Pid,BinAddrAdj,gb_trees:empty()),
-    Expanded = {read_stack_dump(Fd,Pid,BinAddrAdj,Dict),
-		read_messages(Fd,Pid,BinAddrAdj,Dict),
-		read_dictionary(Fd,Pid,BinAddrAdj,Dict)},
+    Dict0 = case get(?literals) of
+                undefined ->
+                    Literals = read_literals(Fd,DecodeOpts),
+                    put(?literals,Literals),
+                    put(fd,Fd),
+                    Literals;
+                Literals ->
+                    Literals
+            end,
+    Dict = read_heap(Fd,Pid,DecodeOpts,Dict0),
+    Expanded = {read_stack_dump(Fd,Pid,DecodeOpts,Dict),
+		read_messages(Fd,Pid,DecodeOpts,Dict),
+		read_dictionary(Fd,Pid,DecodeOpts,Dict)},
     erase(fd),
-    Expanded.
-
-%%%-----------------------------------------------------------------
-%%% This is a workaround for a bug in dump versions prior to 0.3:
-%%% Addresses were truncated to 32 bits. This could cause binaries to
-%%% get the same address as heap terms in the dump. To work around it
-%%% we always store binaries on very high addresses in the gb_tree.
-get_bin_addr_adj(DumpVsn) when DumpVsn < [0,3] ->
-    16#f bsl 64;
-get_bin_addr_adj(_) ->
-    0.
+    IncompleteWarning =
+        case erase(incomplete_heap) of
+            undefined ->
+                [];
+            true ->
+                ["WARNING: This process has an incomplete heap. "
+                 "Some information might be missing."]
+        end,
+    {Expanded,IncompleteWarning}.
+
+read_literals(Fd,DecodeOpts) ->
+    case lookup_index(?literals,[]) of
+	[{_,Start}] ->
+            [{_,Chars}] = ets:lookup(cdv_heap_file_chars,literals),
+            init_progress("Reading literals",Chars),
+	    pos_bof(Fd,Start),
+	    read_heap(DecodeOpts,gb_trees:empty());
+        [] ->
+            gb_trees:empty()
+    end.
+
+get_decode_opts(DumpVsn) ->
+    BinAddrAdj = if
+                     DumpVsn < [0,3] ->
+                         %% This is a workaround for a bug in dump
+                         %% versions prior to 0.3: Addresses were
+                         %% truncated to 32 bits. This could cause
+                         %% binaries to get the same address as heap
+                         %% terms in the dump. To work around it we
+                         %% always store binaries on very high
+                         %% addresses in the gb_tree.
+                         16#f bsl 64;
+                     true ->
+                         0
+                 end,
+    Base64 = DumpVsn >= [0,5],
+    #dec_opts{bin_addr_adj=BinAddrAdj,base64=Base64}.
 
 %%%
 %%% Read top level section.
 %%%
 
-read_stack_dump(Fd,Pid,BinAddrAdj,Dict) ->
+read_stack_dump(Fd,Pid,DecodeOpts,Dict) ->
     case lookup_index(?proc_stack,Pid) of
 	[{_,Start}] ->
 	    pos_bof(Fd,Start),
-	    read_stack_dump1(Fd,BinAddrAdj,Dict,[]);
+	    read_stack_dump1(Fd,DecodeOpts,Dict,[]);
 	[] ->
 	    []
     end.
-read_stack_dump1(Fd,BinAddrAdj,Dict,Acc) ->
+read_stack_dump1(Fd,DecodeOpts,Dict,Acc) ->
     %% This function is never called if the dump is truncated in {?proc_heap,Pid}
     case bytes(Fd) of
 	"=" ++ _next_tag ->
 	    lists:reverse(Acc);
 	Line ->
-	    Stack = parse_top(Line,BinAddrAdj,Dict),
-	    read_stack_dump1(Fd,BinAddrAdj,Dict,[Stack|Acc])
+	    Stack = parse_top(Line,DecodeOpts,Dict),
+	    read_stack_dump1(Fd,DecodeOpts,Dict,[Stack|Acc])
     end.
 
-parse_top(Line0, BinAddrAdj, D) ->
+parse_top(Line0, DecodeOpts, D) ->
     {Label,Line1} = get_label(Line0),
-    {Term,Line,D} = parse_term(Line1, BinAddrAdj, D),
+    {Term,Line,D} = parse_term(Line1, DecodeOpts, D),
     [] = skip_blanks(Line),
     {Label,Term}.
 
@@ -1435,27 +1534,27 @@ parse_top(Line0, BinAddrAdj, D) ->
 %%% Read message queue.
 %%%
 
-read_messages(Fd,Pid,BinAddrAdj,Dict) ->
+read_messages(Fd,Pid,DecodeOpts,Dict) ->
     case lookup_index(?proc_messages,Pid) of
 	[{_,Start}] ->
 	    pos_bof(Fd,Start),
-	    read_messages1(Fd,BinAddrAdj,Dict,[]);
+	    read_messages1(Fd,DecodeOpts,Dict,[]);
 	[] ->
 	    []
     end.
-read_messages1(Fd,BinAddrAdj,Dict,Acc) ->
+read_messages1(Fd,DecodeOpts,Dict,Acc) ->
     %% This function is never called if the dump is truncated in {?proc_heap,Pid}
     case bytes(Fd) of
 	"=" ++ _next_tag ->
 	    lists:reverse(Acc);
 	Line ->
-	    Msg = parse_message(Line,BinAddrAdj,Dict),
-	    read_messages1(Fd,BinAddrAdj,Dict,[Msg|Acc])
+	    Msg = parse_message(Line,DecodeOpts,Dict),
+	    read_messages1(Fd,DecodeOpts,Dict,[Msg|Acc])
     end.
     
-parse_message(Line0, BinAddrAdj, D) ->
-    {Msg,":"++Line1,_} = parse_term(Line0, BinAddrAdj, D),
-    {Token,Line,_} = parse_term(Line1, BinAddrAdj, D),
+parse_message(Line0, DecodeOpts, D) ->
+    {Msg,":"++Line1,_} = parse_term(Line0, DecodeOpts, D),
+    {Token,Line,_} = parse_term(Line1, DecodeOpts, D),
     [] = skip_blanks(Line),
     {Msg,Token}.
     
@@ -1463,26 +1562,26 @@ parse_message(Line0, BinAddrAdj, D) ->
 %%% Read process dictionary
 %%%
 
-read_dictionary(Fd,Pid,BinAddrAdj,Dict) ->
+read_dictionary(Fd,Pid,DecodeOpts,Dict) ->
     case lookup_index(?proc_dictionary,Pid) of
 	[{_,Start}] ->
 	    pos_bof(Fd,Start),
-	    read_dictionary1(Fd,BinAddrAdj,Dict,[]);
+	    read_dictionary1(Fd,DecodeOpts,Dict,[]);
 	[] ->
 	    []
     end.
-read_dictionary1(Fd,BinAddrAdj,Dict,Acc) ->
+read_dictionary1(Fd,DecodeOpts,Dict,Acc) ->
     %% This function is never called if the dump is truncated in {?proc_heap,Pid}
     case bytes(Fd) of
 	"=" ++ _next_tag ->
 	    lists:reverse(Acc);
 	Line ->
-	    Msg = parse_dictionary(Line,BinAddrAdj,Dict),
-	    read_dictionary1(Fd,BinAddrAdj,Dict,[Msg|Acc])
+	    Msg = parse_dictionary(Line,DecodeOpts,Dict),
+	    read_dictionary1(Fd,DecodeOpts,Dict,[Msg|Acc])
     end.
     
-parse_dictionary(Line0, BinAddrAdj, D) ->
-    {Entry,Line,_} = parse_term(Line0, BinAddrAdj, D),
+parse_dictionary(Line0, DecodeOpts, D) ->
+    {Entry,Line,_} = parse_term(Line0, DecodeOpts, D),
     [] = skip_blanks(Line),
     Entry.
     
@@ -1490,18 +1589,18 @@ parse_dictionary(Line0, BinAddrAdj, D) ->
 %%% Read heap data.
 %%%
 
-read_heap(Fd,Pid,BinAddrAdj,Dict0) ->
+read_heap(Fd,Pid,DecodeOpts,Dict0) ->
     case lookup_index(?proc_heap,Pid) of
 	[{_,Pos}] ->
             [{_,Chars}] = ets:lookup(cdv_heap_file_chars,Pid),
             init_progress("Reading process heap",Chars),
 	    pos_bof(Fd,Pos),
-	    read_heap(BinAddrAdj,Dict0);
+	    read_heap(DecodeOpts,Dict0);
 	[] ->
 	    Dict0
     end.
 
-read_heap(BinAddrAdj,Dict0) ->
+read_heap(DecodeOpts,Dict0) ->
     %% This function is never called if the dump is truncated in {?proc_heap,Pid}
     case get(fd) of
 	end_of_heap ->
@@ -1515,14 +1614,14 @@ read_heap(BinAddrAdj,Dict0) ->
 		    Dict0;
 		Line ->
                     update_progress(length(Line)+1),
-		    Dict = parse(Line,BinAddrAdj,Dict0),
-		    read_heap(BinAddrAdj,Dict)
+		    Dict = parse(Line,DecodeOpts,Dict0),
+		    read_heap(DecodeOpts,Dict)
 	    end
     end.
 
-parse(Line0, BinAddrAdj, Dict0) ->
+parse(Line0, DecodeOpts, Dict0) ->
     {Addr,":"++Line1} = get_hex(Line0),
-    {_Term,Line,Dict} = parse_heap_term(Line1, Addr, BinAddrAdj, Dict0),
+    {_Term,Line,Dict} = parse_heap_term(Line1, Addr, DecodeOpts, Dict0),
     [] = skip_blanks(Line),
     Dict.
 
@@ -1844,12 +1943,15 @@ get_nodeinfo(Fd,Nod) ->
 
 %%-----------------------------------------------------------------
 %% Page with details about one loaded modules
-get_loaded_mod_details(File,Mod) ->
+get_loaded_mod_details(File,Mod,DecodeOpts) ->
     [{_,Start}] = lookup_index(?mod,Mod),
     Fd = open(File),
     pos_bof(Fd,Start),
     InitLM = #loaded_mod{mod=Mod,old_size="No old code exists"},
-    ModInfo = get_loaded_mod_info(Fd,InitLM,fun all_modinfo/3),
+    Fun = fun(F, LM, LineHead) ->
+                  all_modinfo(F, LM, LineHead, DecodeOpts)
+          end,
+    ModInfo = get_loaded_mod_info(Fd,InitLM,Fun),
     close(Fd),
     ModInfo.
 
@@ -1907,59 +2009,44 @@ get_loaded_mod_info(Fd,LM,Fun) ->
 
 main_modinfo(_Fd,LM,_LineHead) ->
     LM.
-all_modinfo(Fd,LM,LineHead) ->
+all_modinfo(Fd,LM,LineHead,DecodeOpts) ->
     case LineHead of
 	"Current attributes" ->
-	    Str = hex_to_str(bytes(Fd,"")),
+            Str = get_attribute(Fd, DecodeOpts),
 	    LM#loaded_mod{current_attrib=Str};
 	"Current compilation info" ->
-	    Str = hex_to_str(bytes(Fd,"")),
+            Str = get_attribute(Fd, DecodeOpts),
 	    LM#loaded_mod{current_comp_info=Str};
 	"Old attributes" ->
-	    Str = hex_to_str(bytes(Fd,"")),
+            Str = get_attribute(Fd, DecodeOpts),
 	    LM#loaded_mod{old_attrib=Str};
 	"Old compilation info" ->
-	    Str = hex_to_str(bytes(Fd,"")),
+            Str = get_attribute(Fd, DecodeOpts),
 	    LM#loaded_mod{old_comp_info=Str};
 	Other ->
 	    unexpected(Fd,Other,"loaded modules info"),
 	    LM
     end.
-    
 
-hex_to_str(Hex) ->
-    Term = hex_to_term(Hex,[]),
-    io_lib:format("~tp~n",[Term]).
-
-hex_to_term([X,Y|Hex],Acc) ->
-    MS = hex_to_dec([X]),
-    LS = hex_to_dec([Y]),
-    Z = 16*MS+LS,
-    hex_to_term(Hex,[Z|Acc]);
-hex_to_term([],Acc) ->
-    Bin = list_to_binary(lists:reverse(Acc)),
-    case catch binary_to_term(Bin) of
-	{'EXIT',_Reason} ->
-	    {"WARNING: The term is probably truncated!",
-	     "I can not do binary_to_term.",
-	     Bin};
-	Term ->
-	    Term
-    end;
-hex_to_term(Rest,Acc) ->
-    {"WARNING: The term is probably truncated!",
-     "I can not convert hex to term.",
-     Rest,list_to_binary(lists:reverse(Acc))}.
-
-
-hex_to_dec("F") -> 15;
-hex_to_dec("E") -> 14;
-hex_to_dec("D") -> 13;
-hex_to_dec("C") -> 12;
-hex_to_dec("B") -> 11;
-hex_to_dec("A") -> 10;
-hex_to_dec(N) -> list_to_integer(N).
-    
+get_attribute(Fd, DecodeOpts) ->
+    Bytes = bytes(Fd, ""),
+    try get_binary(Bytes, DecodeOpts) of
+        {Bin,_} ->
+            try binary_to_term(Bin) of
+                Term ->
+                    io_lib:format("~tp~n",[Term])
+            catch
+                _:_ ->
+                    {"WARNING: The term is probably truncated!",
+                     "I cannot do binary_to_term/1.",
+                     Bin}
+            end
+    catch
+        _:_ ->
+            {"WARNING: The term is probably truncated!",
+             "I cannot convert to binary.",
+             Bytes}
+    end.
 
 %%-----------------------------------------------------------------
 %% Page with list of all funs
@@ -2516,99 +2603,134 @@ get_limited_stack(Fd, N, Ds) ->
 %%%-----------------------------------------------------------------
 %%% Parse memory in crashdump version 0.1 and newer
 %%%
-parse_heap_term([$l|Line0], Addr, BinAddrAdj, D0) ->	%Cons cell.
-    {H,"|"++Line1,D1} = parse_term(Line0, BinAddrAdj, D0),
-    {T,Line,D2} = parse_term(Line1, BinAddrAdj, D1),
+parse_heap_term([$l|Line0], Addr, DecodeOpts, D0) ->	%Cons cell.
+    {H,"|"++Line1,D1} = parse_term(Line0, DecodeOpts, D0),
+    {T,Line,D2} = parse_term(Line1, DecodeOpts, D1),
     Term = [H|T],
     D = gb_trees:insert(Addr, Term, D2),
     {Term,Line,D};
-parse_heap_term([$t|Line0], Addr, BinAddrAdj, D) ->	%Tuple
+parse_heap_term([$t|Line0], Addr, DecodeOpts, D) ->	%Tuple
     {N,":"++Line} = get_hex(Line0),
-    parse_tuple(N, Line, Addr, BinAddrAdj, D, []);
-parse_heap_term([$F|Line0], Addr, _BinAddrAdj, D0) ->	%Float
+    parse_tuple(N, Line, Addr, DecodeOpts, D, []);
+parse_heap_term([$F|Line0], Addr, _DecodeOpts, D0) ->	%Float
     {N,":"++Line1} = get_hex(Line0),
     {Chars,Line} = get_chars(N, Line1),
     Term = list_to_float(Chars),
     D = gb_trees:insert(Addr, Term, D0),
     {Term,Line,D};
-parse_heap_term("B16#"++Line0, Addr, _BinAddrAdj, D0) -> %Positive big number.
+parse_heap_term("B16#"++Line0, Addr, _DecodeOpts, D0) -> %Positive big number.
     {Term,Line} = get_hex(Line0),
     D = gb_trees:insert(Addr, Term, D0),
     {Term,Line,D};
-parse_heap_term("B-16#"++Line0, Addr, _BinAddrAdj, D0) -> %Negative big number
+parse_heap_term("B-16#"++Line0, Addr, _DecodeOpts, D0) -> %Negative big number
     {Term0,Line} = get_hex(Line0),
     Term = -Term0,
     D = gb_trees:insert(Addr, Term, D0),
     {Term,Line,D};
-parse_heap_term("B"++Line0, Addr, _BinAddrAdj, D0) ->	%Decimal big num
+parse_heap_term("B"++Line0, Addr, _DecodeOpts, D0) ->	%Decimal big num
     case string:to_integer(Line0) of
 	{Int,Line} when is_integer(Int) ->
 	    D = gb_trees:insert(Addr, Int, D0),
 	    {Int,Line,D}
     end;
-parse_heap_term([$P|Line0], Addr, _BinAddrAdj, D0) ->	% External Pid.
+parse_heap_term([$P|Line0], Addr, _DecodeOpts, D0) ->	% External Pid.
     {Pid0,Line} = get_id(Line0),
     Pid = ['#CDVPid'|Pid0],
     D = gb_trees:insert(Addr, Pid, D0),
     {Pid,Line,D};
-parse_heap_term([$p|Line0], Addr, _BinAddrAdj, D0) ->   % External Port.
+parse_heap_term([$p|Line0], Addr, _DecodeOpts, D0) ->   % External Port.
     {Port0,Line} = get_id(Line0),
     Port = ['#CDVPort'|Port0],
     D = gb_trees:insert(Addr, Port, D0),
     {Port,Line,D};
-parse_heap_term("E"++Line0, Addr, _BinAddrAdj, D0) ->	%Term encoded in external format.
-    {Bin,Line} = get_binary(Line0),
+parse_heap_term("E"++Line0, Addr, DecodeOpts, D0) ->	%Term encoded in external format.
+    {Bin,Line} = get_binary(Line0, DecodeOpts),
     Term = binary_to_term(Bin),
     D = gb_trees:insert(Addr, Term, D0),
     {Term,Line,D};
-parse_heap_term("Yh"++Line0, Addr, _BinAddrAdj, D0) ->	%Heap binary.
-    {Term,Line} = get_binary(Line0),
+parse_heap_term("Yh"++Line0, Addr, DecodeOpts, D0) ->	%Heap binary.
+    {Term,Line} = get_binary(Line0, DecodeOpts),
     D = gb_trees:insert(Addr, Term, D0),
     {Term,Line,D};
-parse_heap_term("Yc"++Line0, Addr, BinAddrAdj, D0) ->	%Reference-counted binary.
+parse_heap_term("Yc"++Line0, Addr, DecodeOpts, D0) ->	%Reference-counted binary.
     {Binp0,":"++Line1} = get_hex(Line0),
     {Offset,":"++Line2} = get_hex(Line1),
     {Sz,Line} = get_hex(Line2),
-    Binp = Binp0 bor BinAddrAdj,
-    Term = case lookup_binary_index(Binp) of
-               [{_,Start}] -> cdvbin(Offset,Sz,{'#CDVBin',Start});
-	       [] -> '#CDVNonexistingBinary'
-	   end,
-    D = gb_trees:insert(Addr, Term, D0),
-    {Term,Line,D};
-parse_heap_term("Ys"++Line0, Addr, BinAddrAdj, D0) ->	%Sub binary.
+    Binp = Binp0 bor DecodeOpts#dec_opts.bin_addr_adj,
+    case lookup_binary_index(Binp) of
+        [{_,Start}] ->
+            SymbolicBin = {'#CDVBin',Start},
+            Term = cdvbin(Offset, Sz, SymbolicBin),
+            D1 = gb_trees:insert(Addr, Term, D0),
+            D = gb_trees:insert(Binp, SymbolicBin, D1),
+            {Term,Line,D};
+        [] ->
+            Term = '#CDVNonexistingBinary',
+            D1 = gb_trees:insert(Addr, Term, D0),
+            D = gb_trees:insert(Binp, Term, D1),
+            {Term,Line,D}
+    end;
+parse_heap_term("Ys"++Line0, Addr, DecodeOpts, D0) ->	%Sub binary.
     {Binp0,":"++Line1} = get_hex(Line0),
     {Offset,":"++Line2} = get_hex(Line1),
-    {Sz,Line} = get_hex(Line2),
-    Binp = Binp0 bor BinAddrAdj,
-    Term = case lookup_binary_index(Binp) of
-               [{_,Start}] -> cdvbin(Offset,Sz,{'#CDVBin',Start});
-	       [] ->
-		   %% Might it be on the heap?
-		   case gb_trees:lookup(Binp, D0) of
-		       {value,Bin} -> cdvbin(Offset,Sz,Bin);
-		       none -> '#CDVNonexistingBinary'
-		   end
-	   end,
-    D = gb_trees:insert(Addr, Term, D0),
-    {Term,Line,D}.
-
+    {Sz,Line3} = get_hex(Line2),
+    {Term,Line,D1} = deref_bin(Binp0, Offset, Sz, Line3, DecodeOpts, D0),
+    D = gb_trees:insert(Addr, Term, D1),
+    {Term,Line,D};
+parse_heap_term("Mf"++Line0, Addr, DecodeOpts, D0) -> %Flatmap.
+    {Size,":"++Line1} = get_hex(Line0),
+    {Keys,":"++Line2,D1} = parse_term(Line1, DecodeOpts, D0),
+    {Values,Line,D2} = parse_tuple(Size, Line2, Addr,DecodeOpts, D1, []),
+    Pairs = zip_tuples(tuple_size(Keys), Keys, Values, []),
+    Map = maps:from_list(Pairs),
+    D = gb_trees:update(Addr, Map, D2),
+    {Map,Line,D};
+parse_heap_term("Mh"++Line0, Addr, DecodeOpts, D0) -> %Head node in a hashmap.
+    {MapSize,":"++Line1} = get_hex(Line0),
+    {N,":"++Line2} = get_hex(Line1),
+    {Nodes,Line,D1} = parse_tuple(N, Line2, Addr, DecodeOpts, D0, []),
+    Map = maps:from_list(flatten_hashmap_nodes(Nodes)),
+    MapSize = maps:size(Map),                   %Assertion.
+    D = gb_trees:update(Addr, Map, D1),
+    {Map,Line,D};
+parse_heap_term("Mn"++Line0, Addr, DecodeOpts, D) -> %Interior node in a hashmap.
+    {N,":"++Line} = get_hex(Line0),
+    parse_tuple(N, Line, Addr, DecodeOpts, D, []).
 
 parse_tuple(0, Line, Addr, _, D0, Acc) ->
     Tuple = list_to_tuple(lists:reverse(Acc)),
     D = gb_trees:insert(Addr, Tuple, D0),
     {Tuple,Line,D};
-parse_tuple(N, Line0, Addr, BinAddrAdj, D0, Acc) ->
-    case parse_term(Line0, BinAddrAdj, D0) of
+parse_tuple(N, Line0, Addr, DecodeOpts, D0, Acc) ->
+    case parse_term(Line0, DecodeOpts, D0) of
 	{Term,[$,|Line],D} when N > 1 ->
-	    parse_tuple(N-1, Line, Addr, BinAddrAdj, D, [Term|Acc]);
+	    parse_tuple(N-1, Line, Addr, DecodeOpts, D, [Term|Acc]);
 	{Term,Line,D}->
-	    parse_tuple(N-1, Line, Addr, BinAddrAdj, D, [Term|Acc])
+	    parse_tuple(N-1, Line, Addr, DecodeOpts, D, [Term|Acc])
     end.
 
-parse_term([$H|Line0], BinAddrAdj, D) ->        %Pointer to heap term.
+zip_tuples(0, _T1, _T2, Acc) ->
+    Acc;
+zip_tuples(N, T1, T2, Acc) when N =< tuple_size(T1) ->
+    zip_tuples(N-1, T1, T2, [{element(N, T1),element(N, T2)}|Acc]).
+
+flatten_hashmap_nodes(Tuple) ->
+    flatten_hashmap_nodes_1(tuple_size(Tuple), Tuple, []).
+
+flatten_hashmap_nodes_1(0, _Tuple, Acc) ->
+    Acc;
+flatten_hashmap_nodes_1(N, Tuple0, Acc0) ->
+    case element(N, Tuple0) of
+        [K|V] ->
+            flatten_hashmap_nodes_1(N-1, Tuple0, [{K,V}|Acc0]);
+        Tuple when is_tuple(Tuple) ->
+            Acc = flatten_hashmap_nodes_1(N-1, Tuple0, Acc0),
+            flatten_hashmap_nodes_1(tuple_size(Tuple), Tuple, Acc)
+    end.
+
+parse_term([$H|Line0], DecodeOpts, D) ->        %Pointer to heap term.
     {Ptr,Line} = get_hex(Line0),
-    deref_ptr(Ptr, Line, BinAddrAdj, D);
+    deref_ptr(Ptr, Line, DecodeOpts, D);
 parse_term([$N|Line], _, D) ->			%[] (nil).
     {[],Line,D};
 parse_term([$I|Line0], _, D) ->			%Small.
@@ -2625,11 +2747,11 @@ parse_term([$p|Line0], _, D) ->			%Port.
 parse_term([$S|Str0], _, D) ->			%Information string.
     Str = lists:reverse(skip_blanks(lists:reverse(Str0))),
     {Str,[],D};
-parse_term([$D|Line0], _, D) ->                 %DistExternal
+parse_term([$D|Line0], DecodeOpts, D) ->                 %DistExternal
     try
 	{AttabSize,":"++Line1} = get_hex(Line0),
 	{Attab, "E"++Line2} = parse_atom_translation_table(AttabSize, Line1, []),
-	{Bin,Line3} = get_binary(Line2),
+	{Bin,Line3} = get_binary(Line2, DecodeOpts),
 	{try
 	     erts_debug:dist_ext_to_term(Attab, Bin)
 	 catch
@@ -2662,26 +2784,55 @@ parse_atom_translation_table(0, Line0, As) ->
 parse_atom_translation_table(N, Line0, As) ->
     {A, Line1, _} = parse_atom(Line0, []),
     parse_atom_translation_table(N-1, Line1, [A|As]).
-    
-    
 
-deref_ptr(Ptr, Line, BinAddrAdj, D0) ->
-    case gb_trees:lookup(Ptr, D0) of
+
+deref_ptr(Ptr, Line, DecodeOpts, D) ->
+    Lookup = fun(D0) ->
+                     gb_trees:lookup(Ptr, D0)
+             end,
+    do_deref_ptr(Lookup, Line, DecodeOpts, D).
+
+deref_bin(Binp0, Offset, Sz, Line, DecodeOpts, D) ->
+    Binp = Binp0 bor DecodeOpts#dec_opts.bin_addr_adj,
+    Lookup = fun(D0) ->
+                     lookup_binary(Binp, Offset, Sz, D0)
+             end,
+    do_deref_ptr(Lookup, Line, DecodeOpts, D).
+
+lookup_binary(Binp, Offset, Sz, D) ->
+    case lookup_binary_index(Binp) of
+        [{_,Start}] ->
+            Term = cdvbin(Offset, Sz, {'#CDVBin',Start}),
+            {value,Term};
+        [] ->
+            case gb_trees:lookup(Binp, D) of
+                {value,<<_:Offset/bytes,Sub:Sz/bytes,_/bytes>>} ->
+                    {value,Sub};
+                {value,SymbolicBin} ->
+                    {value,cdvbin(Offset, Sz, SymbolicBin)};
+                none ->
+                    none
+            end
+    end.
+
+do_deref_ptr(Lookup, Line, DecodeOpts, D0) ->
+    case Lookup(D0) of
 	{value,Term} ->
 	    {Term,Line,D0};
 	none ->
 	    case get(fd) of
 		end_of_heap ->
+                    put(incomplete_heap,true),
 		    {['#CDVIncompleteHeap'],Line,D0};
 		Fd ->
 		    case bytes(Fd) of
 			"="++_ ->
 			    put(fd, end_of_heap),
-			    deref_ptr(Ptr, Line, BinAddrAdj, D0);
+			    do_deref_ptr(Lookup, Line, DecodeOpts, D0);
 			L ->
                             update_progress(length(L)+1),
-			    D = parse(L, BinAddrAdj, D0),
-			    deref_ptr(Ptr, Line, BinAddrAdj, D)
+			    D = parse(L, DecodeOpts, D0),
+			    do_deref_ptr(Lookup, Line, DecodeOpts, D)
 		    end
 	    end
     end.
@@ -2744,36 +2895,80 @@ get_label([$:|Line], Acc) ->
 get_label([H|T], Acc) ->
     get_label(T, [H|Acc]).
 
-get_binary(Line0) ->
+get_binary(Line0,DecodeOpts) ->
     case get_hex(Line0) of
         {N,":"++Line} ->
-            do_get_binary(N, Line, [], false);
+            get_binary_1(N, Line, DecodeOpts);
         _  ->
            {'#CDVTruncatedBinary',[]}
     end.
 
-get_binary(Offset,Size,Line0) ->
+get_binary_1(N,Line,#dec_opts{base64=false}) ->
+    get_binary_hex(N, Line, [], false);
+get_binary_1(N,Line0,#dec_opts{base64=true}) ->
+    NumBytes = ((N+2) div 3) * 4,
+    {Base64,Line} = lists:split(NumBytes, Line0),
+    Bin = get_binary_base64(list_to_binary(Base64), <<>>, false),
+    {Bin,Line}.
+
+get_binary(Offset,Size,Line0,DecodeOpts) ->
     case get_hex(Line0) of
         {_N,":"++Line} ->
-            Progress = Size>?binary_size_progress_limit,
-            Progress andalso init_progress("Reading binary",Size),
-            do_get_binary(Size, lists:sublist(Line,(Offset*2)+1,Size*2), [],
-                          Progress);
-        _  ->
-           {'#CDVTruncatedBinary',[]}
-    end.
-
-do_get_binary(0, Line, Acc, Progress) ->
+            get_binary_1(Offset,Size,Line,DecodeOpts);
+        _ ->
+            {'#CDVTruncatedBinary',[]}
+    end.
+
+get_binary_1(Offset,Size,Line,#dec_opts{base64=false}) ->
+    Progress = Size > ?binary_size_progress_limit,
+    Progress andalso init_progress("Reading binary",Size),
+    get_binary_hex(Size, lists:sublist(Line,(Offset*2)+1,Size*2), [],
+                  Progress);
+get_binary_1(StartOffset,Size,Line,#dec_opts{base64=true}) ->
+    Progress = Size > ?binary_size_progress_limit,
+    Progress andalso init_progress("Reading binary",Size),
+    EndOffset = StartOffset + Size,
+    StartByte = (StartOffset div 3) * 4,
+    EndByte = ((EndOffset + 2) div 3) * 4,
+    NumBytes = EndByte - StartByte,
+    case list_to_binary(Line) of
+        <<_:StartByte/bytes,Base64:NumBytes/bytes,_/bytes>> ->
+            Bin0 = get_binary_base64(Base64, <<>>, Progress),
+            Skip = StartOffset - (StartOffset div 3) * 3,
+            <<_:Skip/bytes,Bin:Size/bytes,_/bytes>> = Bin0,
+            {Bin,[]};
+        _ ->
+            {'#CDVTruncatedBinary',[]}
+    end.
+
+get_binary_hex(0, Line, Acc, Progress) ->
     Progress andalso end_progress(),
     {list_to_binary(lists:reverse(Acc)),Line};
-do_get_binary(N, [A,B|Line], Acc, Progress) ->
+get_binary_hex(N, [A,B|Line], Acc, Progress) ->
     Byte = (get_hex_digit(A) bsl 4) bor get_hex_digit(B),
     Progress andalso update_progress(),
-    do_get_binary(N-1, Line, [Byte|Acc], Progress);
-do_get_binary(_N, [], _Acc, Progress) ->
+    get_binary_hex(N-1, Line, [Byte|Acc], Progress);
+get_binary_hex(_N, [], _Acc, Progress) ->
     Progress andalso end_progress(),
     {'#CDVTruncatedBinary',[]}.
 
+get_binary_base64(<<Chunk0:?base64_chunk_size/bytes,T/bytes>>,
+                  Acc0, Progress) ->
+    Chunk = base64:decode(Chunk0),
+    Acc = <<Acc0/binary,Chunk/binary>>,
+    Progress andalso update_progress(?base64_chunk_size * 3 div 4),
+    get_binary_base64(T, Acc, Progress);
+get_binary_base64(Chunk0, Acc, Progress) ->
+    case Progress of
+        true ->
+            update_progress(?base64_chunk_size * 3 div 4),
+            end_progress();
+        false ->
+            ok
+    end,
+    Chunk = base64:decode(Chunk0),
+    <<Acc/binary,Chunk/binary>>.
+
 cdvbin(Offset,Size,{'#CDVBin',Pos}) ->
     ['#CDVBin',Offset,Size,Pos];
 cdvbin(Offset,Size,['#CDVBin',_,_,Pos]) ->
@@ -2794,6 +2989,10 @@ reset_tables() ->
 insert_index(Tag,Id,Pos) ->
     ets:insert(cdv_dump_index_table,{{Tag,Pos},Id}).
 
+delete_index(Tag,Id) ->
+    Ms = [{{{Tag,'$1'},Id},[],[true]}],
+    ets:select_delete(cdv_dump_index_table, Ms).
+
 lookup_index({Tag,Id}) ->
     lookup_index(Tag,Id);
 lookup_index(Tag) ->
@@ -2810,6 +3009,7 @@ insert_binary_index(Addr,Pos) ->
 lookup_binary_index(Addr) ->
     ets:lookup(cdv_binary_index_table,Addr).
 
+
 %%-----------------------------------------------------------------
 %% Convert tags read from crashdump to atoms used as first part of key
 %% in cdv_dump_index_table
@@ -2827,6 +3027,7 @@ tag_to_atom("hidden_node") -> ?hidden_node;
 tag_to_atom("index_table") -> ?index_table;
 tag_to_atom("instr_data") -> ?instr_data;
 tag_to_atom("internal_ets") -> ?internal_ets;
+tag_to_atom("literals") -> ?literals;
 tag_to_atom("loaded_modules") -> ?loaded_modules;
 tag_to_atom("memory") -> ?memory;
 tag_to_atom("mod") -> ?mod;
@@ -2850,8 +3051,10 @@ tag_to_atom(UnknownTag) ->
 %%%-----------------------------------------------------------------
 %%% Store last tag for use when truncated, and reason if aborted
 put_last_tag(?abort,Reason) ->
-    %% Don't overwrite the real last tag
-    put(truncated_reason,Reason);
+    %% Don't overwrite the real last tag, and make sure to return
+    %% the previous last tag.
+    put(truncated_reason,Reason),
+    get(last_tag);
 put_last_tag(Tag,Id) ->
     put(last_tag,{Tag,Id}).
 
diff --git a/lib/observer/src/observer_html_lib.erl b/lib/observer/src/observer_html_lib.erl
index 68381bcc7b..8202f91030 100644
--- a/lib/observer/src/observer_html_lib.erl
+++ b/lib/observer/src/observer_html_lib.erl
@@ -355,11 +355,11 @@ href_proc_bin(From, T, Acc, LTB) ->
                                 PreviewStr
                         end
                 end;
-	    [PreviewIntStr,SizeStr,Md5] when From =:= obs ->
+	    [PreviewIntStr,PreviewBitSizeStr,SizeStr,Md5] when From =:= obs ->
 		Size = list_to_integer(SizeStr),
                 PreviewInt = list_to_integer(PreviewIntStr),
-		PrevSize = (trunc(math:log2(PreviewInt)/8)+1)*8,
-		PreviewStr = preview_string(Size,<<PreviewInt:PrevSize>>),
+                PreviewBitSize = list_to_integer(PreviewBitSizeStr),
+		PreviewStr = preview_string(Size,<<PreviewInt:PreviewBitSize>>),
 		if LTB ->
 			href("TARGET=\"expanded\"",
 			     ["#OBSBinary?key1="++PreviewIntStr++
diff --git a/lib/observer/src/observer_lib.erl b/lib/observer/src/observer_lib.erl
index e5ffe61d25..52e6c3e52a 100644
--- a/lib/observer/src/observer_lib.erl
+++ b/lib/observer/src/observer_lib.erl
@@ -810,7 +810,7 @@ progress_dialog_destroy({Dialog,_,_}) ->
 
 make_obsbin(Bin,Tab) ->
     Size = byte_size(Bin),
-    Preview =
+    {Preview,PreviewBitSize} =
         try
             %% The binary might be a unicode string, in which case we
             %% don't want to split it in the middle of a grapheme
@@ -819,14 +819,14 @@ make_obsbin(Bin,Tab) ->
             PB1 = string:slice(Bin,0,PL1),
             PS1 = byte_size(PB1) * 8,
             <<P1:PS1>> = PB1,
-            P1
+            {P1,PS1}
         catch _:_ ->
                 %% Probably not a string, so just split anywhere
                 PS2 = min(Size, 10) * 8,
                 <<P2:PS2, _/binary>> = Bin,
-                P2
+                {P2,PS2}
         end,
     Hash = erlang:phash2(Bin),
     Key = {Preview, Size, Hash},
     ets:insert(Tab, {Key,Bin}),
-    ['#OBSBin',Preview,Size,Hash].
+    ['#OBSBin',Preview,PreviewBitSize,Size,Hash].
diff --git a/lib/observer/src/observer_trace_wx.erl b/lib/observer/src/observer_trace_wx.erl
index 8127248262..2c3b46a3a1 100644
--- a/lib/observer/src/observer_trace_wx.erl
+++ b/lib/observer/src/observer_trace_wx.erl
@@ -1201,7 +1201,7 @@ make_ms(MS) ->
     make_ms(Name,Term,FunStr).
 
 make_ms(Name, Term, FunStr) ->
-    #match_spec{name=Name, term=Term, str=io_lib:format("~tw", Term), func = FunStr}.
+    #match_spec{name=Name, term=Term, str=io_lib:format("~tw", [Term]), func = FunStr}.
 
 parse_tp({tp, Mod, FAs}, State) ->
     Patterns = [#tpattern{m=Mod,fa={F,A}, ms=make_ms(List)} ||
diff --git a/lib/observer/test/crashdump_helper.erl b/lib/observer/test/crashdump_helper.erl
index f37d9057cb..bb1755f530 100644
--- a/lib/observer/test/crashdump_helper.erl
+++ b/lib/observer/test/crashdump_helper.erl
@@ -19,7 +19,9 @@
 %%
 
 -module(crashdump_helper).
--export([n1_proc/2,remote_proc/2]).
+-export([n1_proc/2,remote_proc/2,
+         dump_maps/0,create_maps/0,
+         create_binaries/0,create_sub_binaries/1]).
 -compile(r18).
 -include_lib("common_test/include/ct.hrl").
 
@@ -60,7 +62,9 @@ n1_proc(Creator,_N2,Pid2,Port2,_L) ->
     put(ref,Ref),
     put(pid,Pid),
     put(bin,Bin),
+    put(bins,create_binaries()),
     put(sub_bin,SubBin),
+    put(sub_bins,create_sub_binaries(get(bins))),
     put(bignum,83974938738373873),
     put(neg_bignum,-38748762783736367),
     put(ext_pid,Pid2),
@@ -92,3 +96,49 @@ remote_proc(P1,Creator) ->
 		  Creator ! {self(),done},
 		  receive after infinity -> ok end
 	  end).
+
+create_binaries() ->
+    Sizes = lists:seq(60, 70) ++ lists:seq(120, 140),
+    [begin
+         <<H:16/unit:8>> = erlang:md5(<<Size:32>>),
+         Data = ((H bsl (8*150)) div (H+7919)),
+         <<Data:Size/unit:8>>
+     end || Size <- Sizes].
+
+create_sub_binaries(Bins) ->
+    [create_sub_binary(Bin, Start, LenSub) ||
+        Bin <- Bins,
+        Start <- [0,1,2,3,4,5,10,22],
+        LenSub <- [0,1,2,3,4,6,9]].
+
+create_sub_binary(Bin, Start, LenSub) ->
+    Len = byte_size(Bin) - LenSub - Start,
+    <<_:Start/bytes,Sub:Len/bytes,_/bytes>> = Bin,
+    Sub.
+
+%%%
+%%% Test dumping of maps. Dumping of maps only from OTP 20.2.
+%%%
+
+dump_maps() ->
+    Parent = self(),
+    F = fun() ->
+                register(aaaaaaaa_maps, self()),
+                put(maps, create_maps()),
+                Parent ! {self(),done},
+                receive _ -> ok end
+        end,
+    Pid = spawn_link(F),
+    receive
+        {Pid,done} ->
+            {ok,Pid}
+    end.
+
+create_maps() ->
+    Map0 = maps:from_list([{I,[I,I+1]} || I <- lists:seq(1, 40)]),
+    Map1 = maps:from_list([{I,{a,[I,I*I],{}}} || I <- lists:seq(1, 100)]),
+    Map2 = maps:from_list([{{I},(I*I) bsl 24} || I <- lists:seq(1, 10000)]),
+    Map3 = lists:foldl(fun(I, A) ->
+                               A#{I=>I*I}
+                       end, Map2, lists:seq(-10, 0)),
+    #{a=>Map0,b=>Map1,c=>Map2,d=>Map3,e=>#{}}.
diff --git a/lib/observer/test/crashdump_viewer_SUITE.erl b/lib/observer/test/crashdump_viewer_SUITE.erl
index f9ac884743..9fbd1a62a4 100644
--- a/lib/observer/test/crashdump_viewer_SUITE.erl
+++ b/lib/observer/test/crashdump_viewer_SUITE.erl
@@ -25,7 +25,7 @@
 %% Test functions
 -export([all/0, suite/0,groups/0,init_per_group/2,end_per_group/2,
 	 start_stop/1,load_file/1,not_found_items/1,
-	 non_existing/1,not_a_crashdump/1,old_crashdump/1]).
+	 non_existing/1,not_a_crashdump/1,old_crashdump/1,new_crashdump/1]).
 -export([init_per_suite/1, end_per_suite/1]).
 -export([init_per_testcase/2, end_per_testcase/2]).
 
@@ -83,6 +83,7 @@ all() ->
      non_existing,
      not_a_crashdump,
      old_crashdump,
+     new_crashdump,
      load_file,
      not_found_items
     ].
@@ -212,6 +213,25 @@ not_a_crashdump(Config) when is_list(Config) ->
 
     ok = crashdump_viewer:stop().
 
+%% Try to load a file with newer version than this crashdump viewer can handle
+new_crashdump(Config) ->
+    Dump = hd(?config(dumps,Config)),
+    ok = start_backend(Dump),
+    {ok,{MaxVsn,CurrentVsn}} = crashdump_viewer:get_dump_versions(),
+    if MaxVsn =/= CurrentVsn ->
+            ct:fail("Current dump version is not equal to cdv's max version");
+       true ->
+            ok
+    end,
+    ok = crashdump_viewer:stop(),
+    NewerVsn = lists:join($.,[integer_to_list(X+1) || X <- MaxVsn]),
+    PrivDir = ?config(priv_dir,Config),
+    NewDump = filename:join(PrivDir,"new_erl_crash.dump"),
+    ok = file:write_file(NewDump,"=erl_crash_dump:"++NewerVsn++"\n"),
+    {error, Reason} = start_backend(NewDump),
+    "This Crashdump Viewer is too old" ++_ = Reason,
+    ok = crashdump_viewer:stop().
+
 %% Load files into the tool and view all pages
 load_file(Config) when is_list(Config) ->
     case ?t:is_debug() of
@@ -328,7 +348,7 @@ browse_file(File) ->
 
     io:format("  info read",[]),
 
-    lookat_all_pids(Procs),
+    lookat_all_pids(Procs,is_truncated(File),incomplete_allowed(File)),
     io:format("  pids ok",[]),
     lookat_all_ports(Ports),
     io:format("  ports ok",[]),
@@ -339,6 +359,21 @@ browse_file(File) ->
 
     Procs. % used as second arg to special/2
 
+is_truncated(File) ->
+    case filename:extension(File) of
+        ".trunc"++_ ->
+            true;
+        _ ->
+            false
+    end.
+
+incomplete_allowed(File) ->
+    %% Incomplete heap is allowed for native libs, since some literals
+    %% are not dumped - and for pre OTP-20 (really pre 20.2) releases,
+    %% since literals were not dumped at all then.
+    Rel = get_rel_from_dump_name(File),
+    Rel < 20 orelse test_server:is_native(lists).
+
 special(File,Procs) ->
     case filename:extension(File) of
 	".full_dist" ->
@@ -364,6 +399,14 @@ special(File,Procs) ->
 		crashdump_viewer:expand_binary({SOffset,SSize,SPos}),
 	    io:format("  expand binary ok",[]),
 
+            Binaries = crashdump_helper:create_binaries(),
+            verify_binaries(Binaries, proplists:get_value(bins,Dict)),
+	    io:format("  binaries ok",[]),
+
+            SubBinaries = crashdump_helper:create_sub_binaries(Binaries),
+            verify_binaries(SubBinaries, proplists:get_value(sub_bins,Dict)),
+	    io:format("  sub binaries ok",[]),
+
 	    #proc{last_calls=LastCalls} = ProcDetails,
             true = length(LastCalls) =< 4,
 
@@ -422,7 +465,9 @@ special(File,Procs) ->
             %% i.e. no binary exist in the dump
 	    [#proc{pid=Pid0}|_Rest] = lists:keysort(#proc.name,Procs),
 	    Pid = pid_to_list(Pid0),
-	    {ok,ProcDetails=#proc{},[]} = crashdump_viewer:proc_details(Pid),
+            %%WarnIncompleteHeap = ["WARNING: This process has an incomplete heap. Some information might be missing."],
+	    {ok,ProcDetails=#proc{},[]} =
+                crashdump_viewer:proc_details(Pid),
 	    io:format("  process details ok",[]),
 
 	    #proc{dict=Dict} = ProcDetails,
@@ -513,20 +558,56 @@ special(File,Procs) ->
             io:format("  unicode table name ok",[]),
 
             ok;
+        ".maps" ->
+	    %% I registered a process as aaaaaaaa_maps in the map dump
+	    %% to make sure it will be the first in the list when sorted
+	    %% on names.
+	    [#proc{pid=Pid0,name=Name}|_Rest] = lists:keysort(#proc.name,Procs),
+            "aaaaaaaa_maps" = Name,
+	    Pid = pid_to_list(Pid0),
+	    {ok,ProcDetails=#proc{},[]} = crashdump_viewer:proc_details(Pid),
+	    io:format("  process details ok",[]),
+
+	    #proc{dict=Dict} = ProcDetails,
+            %% io:format("~p\n", [Dict]),
+            Maps = crashdump_helper:create_maps(),
+            Maps = proplists:get_value(maps,Dict),
+            io:format("  maps ok",[]),
+            ok;
 	_ ->
 	    ok
     end,
     ok.
 
+verify_binaries([H|T1], [H|T2]) ->
+    %% Heap binary.
+    verify_binaries(T1, T2);
+verify_binaries([Bin|T1], [['#CDVBin',Offset,Size,Pos]|T2]) ->
+    %% Refc binary.
+    {ok,<<Bin:Size/binary>>} = crashdump_viewer:expand_binary({Offset,Size,Pos}),
+    verify_binaries(T1, T2);
+verify_binaries([], []) ->
+    ok.
 
-lookat_all_pids([]) ->
+lookat_all_pids([],_,_) ->
     ok;
-lookat_all_pids([#proc{pid=Pid0}|Procs]) ->
+lookat_all_pids([#proc{pid=Pid0}|Procs],TruncAllowed,IncompAllowed) ->
     Pid = pid_to_list(Pid0),
-    {ok,_ProcDetails=#proc{},_ProcTW} = crashdump_viewer:proc_details(Pid),
-    {ok,_Ets,_EtsTW} = crashdump_viewer:ets_tables(Pid),
-    {ok,_Timers,_TimersTW} = crashdump_viewer:timers(Pid),
-    lookat_all_pids(Procs).
+    {ok,_ProcDetails=#proc{},ProcTW} = crashdump_viewer:proc_details(Pid),
+    {ok,_Ets,EtsTW} = crashdump_viewer:ets_tables(Pid),
+    {ok,_Timers,TimersTW} = crashdump_viewer:timers(Pid),
+    case {ProcTW,EtsTW,TimersTW} of
+        {[],[],[]} ->
+            ok;
+        {["WARNING: This process has an incomplete heap."++_],[],[]}
+          when IncompAllowed ->
+            ok;  % native libs, literals might not be included in dump
+        _ when TruncAllowed ->
+            ok; % truncated dump
+        TWs ->
+            ct:fail({unexpected_warning,TWs})
+    end,
+    lookat_all_pids(Procs,TruncAllowed,IncompAllowed).
 
 lookat_all_ports([]) ->
     ok;
@@ -574,16 +655,11 @@ do_create_dumps(DataDir,Rel) ->
 	current ->
 	    CD3 = dump_with_args(DataDir,Rel,"instr","+Mim true"),
 	    CD4 = dump_with_strange_module_name(DataDir,Rel,"strangemodname"),
-	    Tmp = dump_with_args(DataDir,Rel,"trunc_bytes",""),
-            {ok,#file_info{size=Max}} = file:read_file_info(Tmp),
-            ok = file:delete(Tmp),
-            Bytes = max(15,rand:uniform(Max)),
-            CD5 = dump_with_args(DataDir,Rel,"trunc_bytes",
-                                 "-env ERL_CRASH_DUMP_BYTES " ++
-                                     integer_to_list(Bytes)),
+            CD5 = dump_with_size_limit_reached(DataDir,Rel,"trunc_bytes"),
             CD6 = dump_with_unicode_atoms(DataDir,Rel,"unicode"),
+            CD7 = dump_with_maps(DataDir,Rel,"maps"),
             TruncatedDumps = truncate_dump(CD1),
-	    {[CD1,CD2,CD3,CD4,CD5,CD6|TruncatedDumps], DosDump};
+	    {[CD1,CD2,CD3,CD4,CD5,CD6,CD7|TruncatedDumps], DosDump};
 	_ ->
 	    {[CD1,CD2], DosDump}
     end.
@@ -596,7 +672,10 @@ truncate_dump(File) ->
                   {win32,_} -> <<"\r\n">>;
                   _ -> <<"\n">>
               end,
-    [StartBin,AfterTag] = binary:split(Bin,BinTag),
+    %% Split after "our binary" created by crashdump_helper
+    %% (it may not be the first binary).
+    RE = <<"\n=binary:(?=[0-9A-Z]+",NewLine/binary,"FF:AQID)">>,
+    [StartBin,AfterTag] = re:split(Bin,RE,[{parts,2}]),
     [AddrAndSize,BinaryAndRest] = binary:split(AfterTag,Colon),
     [Binary,_Rest] = binary:split(BinaryAndRest,NewLine),
     TruncSize = byte_size(Binary) - 2,
@@ -689,6 +768,28 @@ dump_with_strange_module_name(DataDir,Rel,DumpName) ->
     ?t:stop_node(n1),
     CD.
 
+dump_with_size_limit_reached(DataDir,Rel,DumpName) ->
+    Tmp = dump_with_args(DataDir,Rel,DumpName,""),
+    {ok,#file_info{size=Max}} = file:read_file_info(Tmp),
+    ok = file:delete(Tmp),
+    dump_with_size_limit_reached(DataDir,Rel,DumpName,Max).
+
+dump_with_size_limit_reached(DataDir,Rel,DumpName,Max) ->
+    Bytes = max(15,rand:uniform(Max)),
+    CD = dump_with_args(DataDir,Rel,DumpName,
+                        "-env ERL_CRASH_DUMP_BYTES " ++
+                            integer_to_list(Bytes)),
+    {ok,#file_info{size=Size}} = file:read_file_info(CD),
+    if Size < Bytes ->
+            %% This means that the dump was actually smaller than the
+            %% randomly selected truncation size, so we'll just do it
+            %% again with a smaller numer
+            ok = file:delete(CD),
+            dump_with_size_limit_reached(DataDir,Rel,DumpName,Size-3);
+       true ->
+            CD
+    end.
+
 dump_with_unicode_atoms(DataDir,Rel,DumpName) ->
     Opt = rel_opt(Rel),
     Pz = "-pz \"" ++ filename:dirname(code:which(?MODULE)) ++ "\"",
@@ -699,6 +800,16 @@ dump_with_unicode_atoms(DataDir,Rel,DumpName) ->
     ?t:stop_node(n1),
     CD.
 
+dump_with_maps(DataDir,Rel,DumpName) ->
+    Opt = rel_opt(Rel),
+    Pz = "-pz \"" ++ filename:dirname(code:which(?MODULE)) ++ "\"",
+    PzOpt = [{args,Pz}],
+    {ok,N1} = ?t:start_node(n1,peer,Opt ++ PzOpt),
+    {ok,_Pid} = rpc:call(N1,crashdump_helper,dump_maps,[]),
+    CD = dump(N1,DataDir,Rel,DumpName),
+    ?t:stop_node(n1),
+    CD.
+
 dump(Node,DataDir,Rel,DumpName) ->
     Crashdump = filename:join(DataDir, dump_prefix(Rel)++DumpName),
     rpc:call(Node,os,putenv,["ERL_CRASH_DUMP",Crashdump]),
@@ -751,6 +862,11 @@ dump_prefix(current) ->
 dump_prefix(Rel) ->
     lists:concat(["r",Rel,"_dump."]).
 
+get_rel_from_dump_name(File) ->
+    Name = filename:basename(File),
+    ["r"++Rel|_] = string:split(Name,"_"),
+    list_to_integer(Rel).
+
 compat_rel(current) ->
     "";
 compat_rel(Rel) ->
diff --git a/lib/observer/vsn.mk b/lib/observer/vsn.mk
index 5f43198f85..fc1fca0925 100644
--- a/lib/observer/vsn.mk
+++ b/lib/observer/vsn.mk
@@ -1 +1 @@
-OBSERVER_VSN = 2.5
+OBSERVER_VSN = 2.6
diff --git a/lib/odbc/doc/src/Makefile b/lib/odbc/doc/src/Makefile
index b66d00a88b..b3f93a7e9c 100644
--- a/lib/odbc/doc/src/Makefile
+++ b/lib/odbc/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 1999-2016. All Rights Reserved.
+# Copyright Ericsson AB 1999-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -38,11 +38,9 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
 # Target Specs
 # ----------------------------------------------------
 XML_APPLICATION_FILES = ref_man.xml
-XML_REF3_FILES = odbc.xml 
+XML_REF3_FILES = odbc.xml
 
-XML_PART_FILES = part.xml \
-	part_notes.xml \
-	part_notes_history.xml
+XML_PART_FILES = part.xml
 
 XML_HTML_FILES = \
 	notes_history.xml
@@ -52,21 +50,15 @@ XML_CHAPTER_FILES = \
 	getting_started.xml \
 	databases.xml \
 	error_handling.xml \
-	notes.xml 
+	notes.xml
 
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
 GIF_FILES = \
-	book.gif \
-	odbc.gif \
-	note.gif \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif \
-	odbc_app_arc.gif 
+	odbc_app_arc.gif
 
 # ----------------------------------------------------
 
@@ -87,10 +79,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -117,12 +109,12 @@ man: $(MAN3_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)	# We depend just to copy them to ../html
 
-debug opt: 
+debug opt:
 
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/odbc/doc/src/book.gif b/lib/odbc/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/odbc/doc/src/book.gif
+++ /dev/null
diff --git a/lib/odbc/doc/src/fascicules.xml b/lib/odbc/doc/src/fascicules.xml
deleted file mode 100644
index 91251d4b20..0000000000
--- a/lib/odbc/doc/src/fascicules.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes 
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
-
diff --git a/lib/odbc/doc/src/note.gif b/lib/odbc/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/odbc/doc/src/note.gif
+++ /dev/null
diff --git a/lib/odbc/doc/src/notes.gif b/lib/odbc/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/odbc/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/odbc/doc/src/notes.xml b/lib/odbc/doc/src/notes.xml
index cc25a21c74..2aa55ca99c 100644
--- a/lib/odbc/doc/src/notes.xml
+++ b/lib/odbc/doc/src/notes.xml
@@ -11,7 +11,7 @@
       Licensed under the Apache License, Version 2.0 (the "License");
       you may not use this file except in compliance with the License.
       You may obtain a copy of the License at
- 
+
           http://www.apache.org/licenses/LICENSE-2.0
 
       Unless required by applicable law or agreed to in writing, software
@@ -21,7 +21,7 @@
       limitations under the License.
 
     </legalnotice>
-    
+
     <title>ODBC Release Notes</title>
     <prepared>otp_appnotes</prepared>
     <docno>nil</docno>
@@ -32,7 +32,22 @@
   <p>This document describes the changes made to the odbc application.
   </p>
 
-  <section><title>ODBC 2.12</title>
+  <section><title>ODBC 2.12.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>ODBC 2.12</title>
 
     <section><title>Improvements and New Features</title>
       <list>
@@ -568,9 +583,9 @@
 
 </section>
 
-  
+
   <section><title>ODBC 2.10.7</title>
-  
+
     <section><title>Fixed Bugs and Malfunctions</title>
     <list>
       <item>
@@ -583,7 +598,7 @@
     </list>
     </section>
 
-    
+
     <section><title>Improvements and New Features</title>
       <list>
         <item>
@@ -720,7 +735,7 @@
   </section>
 
   <section><title>ODBC 2.10.5</title>
-  
+
   <section><title>Fixed Bugs and Malfunctions</title>
   <list>
     <item>
@@ -732,12 +747,12 @@
     </item>
   </list>
   </section>
-  
+
   </section>
 
 
   <section><title>ODBC 2.10.4</title>
-  
+
   <section><title>Improvements and New Features</title>
   <list>
     <item>
@@ -756,7 +771,7 @@
     </item>
   </list>
   </section>
-  
+
   </section>
 
  <section><title>ODBC 2.10.3</title>
@@ -787,7 +802,7 @@
 </section>
 
   <section><title>ODBC 2.10.2</title>
-  
+
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
         <item>
@@ -802,9 +817,9 @@
     </section>
 
   </section>
-  
+
   <section><title>ODBC 2.10.1</title>
-  
+
     <section><title>Improvements and New Features</title>
       <list>
         <item>
@@ -852,7 +867,7 @@
  </section>
 
   <section><title>ODBC 2.10</title>
-    
+
     <section><title>Improvements and New Features</title>
       <list>
         <item>
@@ -865,11 +880,11 @@
         </item>
       </list>
     </section>
-    
+
   </section>
 
   <section><title>ODBC 2.0.9</title>
-    
+
     <section><title>Improvements and New Features</title>
       <list>
         <item>
@@ -897,9 +912,9 @@
         </item>
       </list>
     </section>
-    
+
   </section>
-  
+
   <section>
     <title>ODBC 2.0.8</title>
 
@@ -1142,9 +1157,5 @@
         </item>
       </list>
     </section>
-    <!-- p>For information about older versions see
-      <url href="part_notes_history_frame.html">release notes history</url>.</p -->
   </section>
 </chapter>
-
-
diff --git a/lib/odbc/doc/src/odbc.gif b/lib/odbc/doc/src/odbc.gif
deleted file mode 100644
index fbbabee5aa..0000000000
--- a/lib/odbc/doc/src/odbc.gif
+++ /dev/null
diff --git a/lib/odbc/doc/src/odbc_index.gif b/lib/odbc/doc/src/odbc_index.gif
deleted file mode 100644
index fbbabee5aa..0000000000
--- a/lib/odbc/doc/src/odbc_index.gif
+++ /dev/null
diff --git a/lib/odbc/doc/src/part_notes.xml b/lib/odbc/doc/src/part_notes.xml
deleted file mode 100644
index 8f1dbd3fbc..0000000000
--- a/lib/odbc/doc/src/part_notes.xml
+++ /dev/null
@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>ODBC Release Notes</title>
-    <prepared>Ingela Anderton Andin</prepared>
-    <docno></docno>
-    <date>2004-09-07</date>
-    <rev></rev>
-    <file>part_notes.sgml</file>
-  </header>
-  <description>
-    <p>An interface to relational SQL-databases built on ODBC (Open
-      Database Connectivity). </p>
-    <p>For information about older versions see
-      <url href="part_notes_history_frame.html">release notes history</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
-
diff --git a/lib/odbc/doc/src/part_notes_history.xml b/lib/odbc/doc/src/part_notes_history.xml
deleted file mode 100644
index 6f855f6ed1..0000000000
--- a/lib/odbc/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Odbc</title>
-    <prepared>Ingela Anderton Andin</prepared>
-    <docno></docno>
-    <date>2004-09-30</date>
-    <rev></rev>
-    <file>part_notes.sgml</file>
-  </header>
-  <include file="notes_history"></include>
-</part>
-
-
diff --git a/lib/odbc/doc/src/ref_man.gif b/lib/odbc/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/odbc/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/odbc/doc/src/user_guide.gif b/lib/odbc/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/odbc/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/odbc/doc/src/warning.gif b/lib/odbc/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/odbc/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/odbc/vsn.mk b/lib/odbc/vsn.mk
index 2e313570e1..3f7677a71d 100644
--- a/lib/odbc/vsn.mk
+++ b/lib/odbc/vsn.mk
@@ -1 +1 @@
-ODBC_VSN = 2.12
+ODBC_VSN = 2.12.1
diff --git a/lib/orber/doc/src/CosNaming.xml b/lib/orber/doc/src/CosNaming.xml
index d69b604f2f..251e721df1 100644
--- a/lib/orber/doc/src/CosNaming.xml
+++ b/lib/orber/doc/src/CosNaming.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1997</year><year>2016</year>
+      <year>1997</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -55,8 +55,8 @@ struct Binding {
 
 typedef sequence <Binding> BindingList;
     ]]></code>
-    <p>To get access to the record definitions for the structs use:
-      <c>-include_lib("orber/COSS/CosNaming.hrl").</c>.</p>
+    <p>To get access to the record definitions for the structs use:</p>
+    <code>-include_lib("orber/COSS/CosNaming.hrl").</code>
     <p>Names are not an ORB object but the can be structured in components as seen by 
       the definition above. There are no requirements on names so the service can support 
       many different conventions and standards.</p>
diff --git a/lib/orber/doc/src/CosNaming_NamingContext.xml b/lib/orber/doc/src/CosNaming_NamingContext.xml
index 96a6367cbb..4c83e6a240 100644
--- a/lib/orber/doc/src/CosNaming_NamingContext.xml
+++ b/lib/orber/doc/src/CosNaming_NamingContext.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1997</year><year>2016</year>
+      <year>1997</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -37,61 +37,54 @@
       naming contexts. Name context may be named in other contexts and cycles are
       permitted.</p>
     <p>The type <c>NameComponent</c> used below is defined as:</p>
-    <code type="none">
-      -record('CosNaming_NameComponent', {id, kind=""}).
-    </code>
+    <code type="erl">-record('CosNaming_NameComponent', {id, kind=""}).</code>
     <p>where <c>id</c> and <c>kind</c> are strings. </p>
     <p>The type <c>Binding</c> used below is defined as:</p>
-    <code type="none">
-      -record('CosNaming_Binding', {binding_name, binding_type}).
-    </code>
+    <code type="erl">-record('CosNaming_Binding', {binding_name, binding_type}).</code>
     <p>where <c>binding_name</c> is a Name and <c>binding_type</c> is an enum which 
       has the values <c>nobject</c> and <c>ncontext</c>.</p>
     <p>Both these records are defined in the file <c>CosNaming.hrl</c> and it 
       is included with:</p>
-    <code type="none">
-      -include_lib("orber/COSS/CosNaming/CosNaming.hrl").
-    </code>
+    <code type="erl">-include_lib("orber/COSS/CosNaming/CosNaming.hrl").</code>
     <p>There are a number of exceptions that can be returned from functions in this 
       interface.</p>
     <list type="bulleted">
       <item>
         <p>NotFound is defined as </p>
-        <code type="none">
--record('CosNaming_NamingContext_NotFound', 
-                      {rest_of_name, why}).        </code>
+        <code type="erl">
+-record('CosNaming_NamingContext_NotFound',
+        {rest_of_name, why}).</code>
       </item>
       <item>
         <p>CannotProceed is defined as </p>
-        <code type="none">
--record('CosNaming_NamingContext_CannotProceed', 
-                      {rest_of_name, cxt}).        </code>
+        <code type="erl">
+-record('CosNaming_NamingContext_CannotProceed',
+        {rest_of_name, cxt}).
+	</code>
       </item>
       <item>
         <p>InvalidName is defined as </p>
-        <code type="none">
--record('CosNaming_NamingContext_InvalidName', {}).        </code>
+        <code type="erl">
+-record('CosNaming_NamingContext_InvalidName', {}).
+	</code>
       </item>
       <item>
         <p>NotFound is defined as </p>
-        <code type="none">
--record('CosNaming_NamingContext_NotFound', {}).        </code>
+        <code type="erl">-record('CosNaming_NamingContext_NotFound', {}).</code>
       </item>
       <item>
         <p>AlreadyBound is defined as </p>
-        <code type="none">
--record('CosNaming_NamingContext_AlreadyBound', {}).        </code>
+        <code type="erl">-record('CosNaming_NamingContext_AlreadyBound', {}).</code>
       </item>
       <item>
         <p>NotEmpty is defined as </p>
-        <code type="none">
--record('CosNaming_NamingContext_NotEmpty', {).        </code>
+        <code type="erl">-record('CosNaming_NamingContext_NotEmpty', {}).</code>
       </item>
     </list>
     <p>These exceptions are defined in the file <c>CosNaming_NamingContext.hrl</c> and it 
       is included with:</p>
-    <code type="none">
-      -include_lib("orber/COSS/CosNaming/CosNaming_NamingContext.hrl").
+    <code type="erl">
+-include_lib("orber/COSS/CosNaming/CosNaming_NamingContext.hrl").
     </code>
   </description>
   <funcs>
diff --git a/lib/orber/doc/src/CosNaming_NamingContextExt.xml b/lib/orber/doc/src/CosNaming_NamingContextExt.xml
index a571b97ccb..2af3deadda 100644
--- a/lib/orber/doc/src/CosNaming_NamingContextExt.xml
+++ b/lib/orber/doc/src/CosNaming_NamingContextExt.xml
@@ -4,8 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>2000</year>
-      <year>2016</year>
+      <year>2000</year><year>2017</year>
       <holder>Ericsson AB, All Rights Reserved</holder>
     </copyright>
     <legalnotice>
@@ -36,8 +35,8 @@
   <description>
     <p>To get access to the record definitions for the structures use:      <br></br>
 </p>
-    <code type="none">
-        -include_lib("orber/COSS/CosNaming/CosNaming.hrl").
+    <code type="erl">
+-include_lib("orber/COSS/CosNaming/CosNaming.hrl").
     </code>
     <p>This module also exports the functions described in:</p>
     <list type="bulleted">
diff --git a/lib/orber/doc/src/Makefile b/lib/orber/doc/src/Makefile
index ecb0206443..c77345f12b 100644
--- a/lib/orber/doc/src/Makefile
+++ b/lib/orber/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
+# Copyright Ericsson AB 1997-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -57,8 +57,7 @@ XML_REF3_FILES = \
 	orber_acl.xml
 
 XML_PART_FILES = \
-	part.xml \
-	part_notes.xml
+	part.xml
 
 XML_CHAPTER_FILES = \
 	ch_contents.xml \
@@ -79,15 +78,11 @@ XML_CHAPTER_FILES = \
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
-TECHNICAL_DESCR_FILES = 
+TECHNICAL_DESCR_FILES =
 
 GIF_FILES = \
-	book.gif \
-	notes.gif \
-	ref_man.gif \
-	user_guide.gif \
 	name.gif \
 	orbs.gif \
 	theORB.gif \
@@ -114,7 +109,7 @@ HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \
 	$(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html)
 
 INFO_FILE = ../../info
-EXTRA_FILES = summary.html.src \
+EXTRA_FILES = \
 	$(DEFAULT_GIF_FILES) \
 	$(DEFAULT_HTML_FILES) \
 	$(XML_REF3_FILES:%.xml=$(HTMLDIR)/%.html)
@@ -126,10 +121,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -157,11 +152,11 @@ man: $(MAN3_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/orber/doc/src/any.xml b/lib/orber/doc/src/any.xml
index f51712c97e..c94a2132d8 100644
--- a/lib/orber/doc/src/any.xml
+++ b/lib/orber/doc/src/any.xml
@@ -4,8 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1998</year>
-      <year>2016</year>
+      <year>1998</year><year>2017</year>
       <holder>Ericsson AB, All Rights Reserved</holder>
     </copyright>
     <legalnotice>
@@ -41,9 +40,7 @@
     <p>The type <c>TC</c> used below describes an IDL type and is a tuple according 
       to the to the Erlang language mapping.</p>
     <p>The type <c>Any</c> used below is defined as:</p>
-    <code type="none">
-      -record(any, {typecode, value}).
-    </code>
+    <code type="erl">-record(any, {typecode, value}).</code>
     <p>where <c>typecode</c> is a TC tuple and <c>value</c> is an Erlang term of 
       the type defined by the typecode field.</p>
   </description>
diff --git a/lib/orber/doc/src/book.gif b/lib/orber/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/orber/doc/src/book.gif
+++ /dev/null
diff --git a/lib/orber/doc/src/ch_debugging.xml b/lib/orber/doc/src/ch_debugging.xml
index a036cf5231..debac4313e 100644
--- a/lib/orber/doc/src/ch_debugging.xml
+++ b/lib/orber/doc/src/ch_debugging.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>2001</year><year>2016</year>
+      <year>2001</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -121,7 +121,7 @@ Result.......: {'EXCEPTION',{'MARSHAL',[],102,'COMPLETED_NO'}}
         uses the <c>error_logger</c> module to generate the logs. If the traffic 
         is intense you probably want to write the reports to a log-file. 
         This is done by, for example, invoking:</p>
-      <code type="none">
+      <code type="erl">
 erl> error_logger:tty(false). 
 erl> error_logger:logfile({open, "/tmp/IIOPTrace"}). 
       </code>
diff --git a/lib/orber/doc/src/ch_exceptions.xml b/lib/orber/doc/src/ch_exceptions.xml
index 52735dc394..17657d0d4a 100644
--- a/lib/orber/doc/src/ch_exceptions.xml
+++ b/lib/orber/doc/src/ch_exceptions.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>2001</year><year>2016</year>
+      <year>2001</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -192,7 +192,7 @@ module MyModule {
     <title>Throwing Exceptions</title>
     <p>To be able to raise <c>MyException</c> or <c>MyExceptionMsg</c> exceptions, 
       the generated <c>MyModule.hrl</c> must be included, and typical usage is:</p>
-    <code type="none">
+    <code type="erl">
 -module('MyModule_MyInterface_impl').
 -include("MyModule.hrl").
 
diff --git a/lib/orber/doc/src/ch_idl_to_erlang_mapping.xml b/lib/orber/doc/src/ch_idl_to_erlang_mapping.xml
index a0feda3f84..eaa88f24f1 100644
--- a/lib/orber/doc/src/ch_idl_to_erlang_mapping.xml
+++ b/lib/orber/doc/src/ch_idl_to_erlang_mapping.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>1997</year><year>2016</year>
+      <year>1997</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -819,7 +819,7 @@ module x {
     <p><term id="Type Codes"><termdef>Type codes give a complete description  of the type including all its components and structure.</termdef></term>are, for example, used in <seealso marker="any">Any</seealso> values.
       Hence, we can encapsulate the <c>employee</c> struct in an <c>any</c>
       type by:</p>
-    <code type="none">
+    <code type="erl">
 %% Erlang code
 ....
 AnEmployee = #'DB_employee'{'No'      = 1,
@@ -962,7 +962,7 @@ R1 = m_i:foo(Obj, 55),
       representation of the IDL-type <c>void</c>, must be returned by
       <c>baz</c> and <c>'_set_RWAttribute'</c>. 
       These operations can be implemented in the call-back module as:</p>
-    <code type="none">
+    <code type="erl">
 '_set_RWAttribute'(State, Long) ->
     {reply, ok, State}.
 
@@ -1011,7 +1011,7 @@ $> erlc +"{be,erl_template}" DB.idl
     <p>We begin with implementing the <c>DB_Access_impl.erl</c> module, which,
       if we used <c>erl_template</c>, will look like the following. All we need
       to do is to add the logic to the <c>logon</c> operation.</p>
-    <code type="none"><![CDATA[
+    <code type="erl"><![CDATA[
 %%----------------------------------------------------------------------
 %% <LICENSE>
 %% 
@@ -1154,7 +1154,7 @@ $ <input>erlc *.erl</input>
       <seealso marker="ch_exceptions">Exceptions</seealso> chapter.
       In the following example, only the implementation of the API functions
       are shown:</p>
-    <code type="none">
+    <code type="erl">
 %%======================================================================
 %% API Functions
 %%======================================================================
diff --git a/lib/orber/doc/src/ch_install.xml b/lib/orber/doc/src/ch_install.xml
index 9bc974225d..65faa91ccf 100644
--- a/lib/orber/doc/src/ch_install.xml
+++ b/lib/orber/doc/src/ch_install.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>1997</year><year>2016</year>
+      <year>1997</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -106,7 +106,7 @@
         necessary to start the Erlang distribution (i.e. using <c>-name/-sname</c>).</p>
       <p>If we use <c>ram_copies</c> there is no need for creating a disk based
         schema. Simply use:</p>
-      <code type="none">
+      <code type="erl">
 erl> mnesia:start().
 erl> corba:orb_init([{domain, "MyRAMSingleNodeORB"}]).
 erl> orber:install([node()], [{ifr_storage_type, ram_copies}]).
@@ -115,7 +115,7 @@ erl> orber:start().
       <p>If you installation requires <c>disc_copies</c> you must begin with
         creating a Mnesia schema. Otherwise, the installation is similar
         to a RAM installation:</p>
-      <code type="none">
+      <code type="erl">
 erl> mnesia:create_schema([node()]).
 erl> mnesia:start().
 erl> corba:orb_init([{domain, "MyDiskSingleNodeORB"}]).
@@ -137,7 +137,7 @@ erl> orber:start().
       <title>Install RAM Based Multi Node Orber</title>
       <p>Within a domain Orber uses the Erlang distribution protocol. Hence, you
         <em>must</em> start it first by, for example, using:</p>
-      <code type="none">
+      <code type="erl">
 hostA> erl -sname nodeA
       </code>
       <p>In this example, we assume that we want to use two nodes; <c>nodeA</c> and
@@ -146,7 +146,7 @@ hostA> erl -sname nodeA
         parameter <c>extra_db_nodes</c> or use <c>mnesia:change_config/2</c>. To 
         begin with, Mnesia must be started on all nodes before we can install
         Orber:</p>
-      <code type="none">
+      <code type="erl">
 nodeA@hostA> mnesia:start().
 nodeA@hostA> mnesia:change_config(extra_db_nodes, 
                                   [nodeA@hostA, nodeB@hostB]).
@@ -154,7 +154,7 @@ nodeA@hostA> mnesia:change_config(extra_db_nodes,
       <p>After that the above have been repeated on <c>nodeB</c> we must
         first make sure that both nodes will use the same domain name, then
         we can install Orber:</p>
-      <code type="none">
+      <code type="erl">
 nodeA@hostA> corba:orb_init([{domain, "MyRAMMultiNodeORB"}]).
 nodeA@hostA> orber:install([nodeA@hostA, nodeB@hostB],
                            [{ifr_storage_type, ram_copies}]).
@@ -162,7 +162,7 @@ nodeA@hostA> orber:start().
       </code>
       <p>Note that you can only invoke <c>orber:install/1/2</c> on one of the
         nodes. Now we can start Orber on the other node:</p>
-      <code type="none">
+      <code type="erl">
 nodeB@hostB> corba:orb_init([{domain, "MyRAMMultiNodeORB"}]).
 nodeB@hostB> orber:start().
       </code>
@@ -173,7 +173,7 @@ nodeB@hostB> orber:start().
       <p>As for RAM based multi-node Orber installations, the Erlang distribution
         must be started (e.g. erl -sname nodeA). The major difference is that
         when it is disk based a Mnesia schema must be created:</p>
-      <code type="none">
+      <code type="erl">
 nodeA@hostA> mnesia:create_schema([nodeA@hostA, nodeB@hostB]).
 nodeA@hostA> mnesia:start().
       </code>
@@ -183,7 +183,7 @@ nodeA@hostA> mnesia:start().
         <c>mnesia:start()</c>) on <c>nodeB</c>.</p>
       <p>After Mnesia have been started on all nodes, you must confirm that all 
         nodes have the same domain name, then Orber is ready to be installed:</p>
-      <code type="none">
+      <code type="erl">
 nodeA@hostA> corba:orb_init([{domain, "MyDiskMultiNodeORB"}]).
 nodeA@hostA> orber:install([nodeA@hostA, nodeB@hostB],
                            [{ifr_storage_type, disc_copies}]).
@@ -191,7 +191,7 @@ nodeA@hostA> orber:start().
       </code>
       <p>Note that you can only invoke <c>orber:install/1/2</c> on one of the
         nodes. Now we can start Orber on the other node:</p>
-      <code type="none">
+      <code type="erl">
 nodeB@hostB> corba:orb_init([{domain, "MyDiskMultiNodeORB"}]).
 nodeB@hostB> orber:start().
       </code>
@@ -918,7 +918,7 @@ TCP Firewall With NAT</icaption>
       verify whether access would be granted or not. For example, if Orber would
       be started with the ACL <c>[{tcp_out, "10.1.1.1/8#4001/5001"}]</c>, then 
       <c>orber_acl:match/2</c> would behave as follows:</p>
-    <code type="none">
+    <code type="erl">
 erl> orber_acl:match({11,1,1,1}, tcp_out).
 false
 
@@ -967,7 +967,7 @@ erl> orber_acl:match({10,1,1,1}, tcp_out, true).
       the configuration of the underlying system.</p>
     <p>Adding the interface context, for generated stubs/skeletons, is done in the 
       following way:</p>
-    <code type="none">
+    <code type="erl">
 Ctx = #'IOP_ServiceContext'{context_id = ?ORBER_GENERIC_CTX_ID, 
                             context_data = {interface, "10.0.0.1"}},
 'CosNaming_NamingContext':resolve(NS, [{context, [Ctx]}], Name),
diff --git a/lib/orber/doc/src/ch_interceptors.xml b/lib/orber/doc/src/ch_interceptors.xml
index 392fe7de82..4a9f8e69ca 100644
--- a/lib/orber/doc/src/ch_interceptors.xml
+++ b/lib/orber/doc/src/ch_interceptors.xml
@@ -4,7 +4,7 @@
 <chapter>
    <header>
     <copyright>
-      <year>2001</year><year>2016</year>
+      <year>2001</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -121,7 +121,7 @@ The Invocation Order of Interceptor Functions.</icaption>
       we store which objects the clients are allowed to invoke operations on
       and <c>ChecksumModule</c> determines which module we should use to handle
       the checksums. </p>
-    <code type="none">
+    <code type="erl">
 new_in_connection(Arg, Host, Port) ->
     %% Since we only use one interceptor we do not care about the
     %% input Arg since it is set do undefined by Orber.
@@ -141,7 +141,7 @@ new_in_connection(Arg, Host, Port) ->
     <p>When a new request comes in the first interceptor function to be invoked is
       <c>in_request_encoded</c>. We will remove the checksum from the coded
       request body in the following way:</p>
-    <code type="none">
+    <code type="erl">
 in_request_encoded({ObjTable, ChecksumModule}, ObjKey, Ctx, Op, Bin, Extra) ->
     NewBin = ChecksumModule:remove_checksum(Bin),
     {NewBin, Extra}.
@@ -154,7 +154,7 @@ in_request_encoded({ObjTable, ChecksumModule}, ObjKey, Ctx, Op, Bin, Extra) ->
       good throughput.</p>
     <p>If we want to we can restrict any clients to only use a subset of operations
       exported by a server:</p>
-    <code type="none">
+    <code type="erl">
 in_request({ObjTable, ChecksumModule}, ObjKey, Ctx, Op, Params, Extra) ->
     case ets:lookup(ObjTable, {ObjKey, Op}) of
          [] ->
@@ -166,13 +166,13 @@ in_request({ObjTable, ChecksumModule}, ObjKey, Ctx, Op, Params, Extra) ->
     <p>At this point Orber are now ready to invoke the operation on the target 
       object. Since we do not care about what the reply is the <c>out_reply</c>
       function do nothing, i.e.:</p>
-    <code type="none">
+    <code type="erl">
 out_reply(_, _, _, _, Reply, Extra) ->
     {Reply, Extra}.
     </code>
     <p>If the client side ORB expects a checksum to be added to the reply we
       add it by using:</p>
-    <code type="none">
+    <code type="erl">
 out_reply_encoded({ObjTable, ChecksumModule}, ObjKey, Ctx, Op, Bin, Extra) ->
     NewBin = ChecksumModule:add_checksum(Bin),
     {NewBin, Extra}.
@@ -183,8 +183,7 @@ out_reply_encoded({ObjTable, ChecksumModule}, ObjKey, Ctx, Op, Bin, Extra) ->
     </warning>
     <p>For outgoing requests the principle is the same. Hence, it is not further
       described here. The complete interceptor module would look like:</p>
-    <code type="none">
-
+    <code type="erl">
 -module(myInterceptor).
 
 %% Interceptor functions.
diff --git a/lib/orber/doc/src/ch_naming_service.xml b/lib/orber/doc/src/ch_naming_service.xml
index bcbab2a597..991402ae86 100644
--- a/lib/orber/doc/src/ch_naming_service.xml
+++ b/lib/orber/doc/src/ch_naming_service.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>1997</year><year>2016</year>
+      <year>1997</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -116,7 +116,7 @@ Figure 1: Contextual object relationships using the Naming Service.</icaption>
       <title>Fetch Initial Reference to the Naming Service</title>
       <p>In order to use the naming service you have to fetch an 
         initial reference to it. This is done with:</p>
-      <code type="none">
+      <code type="erl">
 NS = corba:resolve_initial_references("NameService").
       </code>
       <note>
@@ -128,14 +128,14 @@ NS = corba:resolve_initial_references("NameService").
       <title>Creating a Naming Context</title>
       <p>There are two functions for creating a naming context.
         The first function, which only creates a naming context object is:</p>
-      <code type="none">
+      <code type="erl">
 NC = 'CosNaming_NamingContext':new_context(NS).
       </code>
       <p>The other function creates a naming context and binds it to a name in 
         an already existing naming context (the initial context in this 
         example):
         </p>
-      <code type="none">
+      <code type="erl">
 NC = 'CosNaming_NamingContext':bind_new_context(NS, lname:new(["new"])).
       </code>
     </section>
@@ -150,19 +150,19 @@ NC = 'CosNaming_NamingContext':bind_new_context(NS, lname:new(["new"])).
       <list type="ordered">
         <item>
           <p>Use the naming library functions to create a name</p>
-          <code type="none">
+          <code type="erl">
 Name = lname:new(["object"]).
           </code>
         </item>
         <item>
           <p>Use CosNaming::NamingContext::bind() to bind a name to an object</p>
-          <code type="none">
+          <code type="erl">
 'CosNaming_NamingContext':bind(Sc, Name, Object).
           </code>
         </item>
         <item>
           <p>Use CosNaming::NamingContext::unbind() to remove the NameBinding from an object</p>
-          <code type="none">
+          <code type="erl">
 'CosNaming_NamingContext':unbind(Sc, Name).
           </code>
         </item>
@@ -180,19 +180,19 @@ Name = lname:new(["object"]).
       <list type="ordered">
         <item>
           <p>Use the naming library functions to create a name path:</p>
-          <code type="none">
+          <code type="erl">
 Name = lname:new(["workgroup", "services"]).
           </code>
         </item>
         <item>
           <p>Use CosNaming::NamingContext::resolve() to to resolve the name to an object</p>
-          <code type="none">
+          <code type="erl">
 Sc = 'CosNaming_NamingContext':resolve(NS, Name).
           </code>
         </item>
       </list>
       <p>An alternative is to use:</p>
-      <code type="none">
+      <code type="erl">
 Sc = corba:string_to_object("corbaname:rir:/NameService#workgroup/services/").
       </code>
       <p>The <c>corbaname</c> schema is described further in the Interoperable
@@ -205,7 +205,7 @@ Sc = corba:string_to_object("corbaname:rir:/NameService#workgroup/services/").
         <item>
           <p>Use CosNaming::NamingContext::list() to list all the bindings in a context</p>
           <p>The following code retrieves and lists up to 10 bindings from a context.</p>
-          <code type="none">
+          <code type="erl">
 {BList, BIterator} = 'CosNaming_NamingContext':list(Sc, 10).
 
 lists:foreach(fun({{Id, Kind},BindingType}) -> case BindingType of 
@@ -229,8 +229,8 @@ lists:foreach(fun({{Id, Kind},BindingType}) -> case BindingType of
           <em>must be removed</em> otherwise dangling processes will occur.
           Use <c>CosNaming::BindingIterator::destroy()</c> to remove it.</p>
       </warning>
-      <code type="none">
-      'CosNaming_NamingContext':destroy(BIterator).
+      <code type="erl">
+'CosNaming_NamingContext':destroy(BIterator).
       </code>
     </section>
 
@@ -241,7 +241,7 @@ lists:foreach(fun({{Id, Kind},BindingType}) -> case BindingType of
       <list type="ordered">
         <item>
           <p>Use CosNaming::NamingContext::destroy() to remove a NamingContext</p>
-          <code type="none">
+          <code type="erl">
 'CosNaming_NamingContext':destroy(Sc).
           </code>
         </item>
@@ -318,13 +318,13 @@ lists:foreach(fun({{Id, Kind},BindingType}) -> case BindingType of
         listed below, they should be associated with. The <c>NameService</c>
         key may <em>not</em> be changed in Orber. If you want to add one of the
         reserved keys as an initial service, simply use:</p>
-      <code type="none">
+      <code type="erl">
 1> Factory = cosNotificationApp:start_global_factory().
 2> corba:add_initial_service("NotificationService", Factory).
       </code>
       <p>This object can then be easily resolved by any other ORB, supporting 
         the Interoperable Naming Service, by using:</p>
-      <code type="none">
+      <code type="erl">
 3> NF = corba:string_to_object("corbaloc::[email protected]:4001/NotificationService").
       </code>
       <table>
@@ -438,13 +438,13 @@ lists:foreach(fun({{Id, Kind},BindingType}) -> case BindingType of
         <tcaption>Stringified Name representation</tcaption>
       </table>
       <p>After creating a stringified Name we can either use:</p>
-      <code type="none">
+      <code type="erl">
 NameStr = "org.erlang",
 NS      = corba:resolve_initial_references("NameService"),
 Obj     = 'CosNaming_NamingContextExt':resolve_str(NS, NameStr),
       </code>
       <p>or concatenate the Name String using:</p>
-      <code type="none">
+      <code type="erl">
 NameStr = "Swedish/Soccer/Champions",
 Address = "corbaname:iiop:[email protected]:2000/NameService",
 NS      = corba:resolve_initial_references("NameService"),
diff --git a/lib/orber/doc/src/ch_orberweb.xml b/lib/orber/doc/src/ch_orberweb.xml
index be1d7fb983..c9dcc382e6 100644
--- a/lib/orber/doc/src/ch_orberweb.xml
+++ b/lib/orber/doc/src/ch_orberweb.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>2001</year><year>2016</year>
+      <year>2001</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -208,8 +208,7 @@
     <p>You may choose to start OrberWeb on node, on which Orber is running or not. But
       the Erlang distribution must be started (e.g. by using -sname aNodeName). Now, all 
       you have to do is to invoke:</p>
-    <code type="none">
-    
+    <code type="none">    
 erl> webtool:start().
 WebTool is available at http://localhost:8888/
 Or  http://127.0.0.1:8888/
diff --git a/lib/orber/doc/src/ch_stubs.xml b/lib/orber/doc/src/ch_stubs.xml
index 144191a66a..9290c127f9 100644
--- a/lib/orber/doc/src/ch_stubs.xml
+++ b/lib/orber/doc/src/ch_stubs.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>1999</year><year>2016</year>
+      <year>1999</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -158,7 +158,7 @@ up_to_date
         <p>Arguments and Replies are determined by the IDL-code and, hence, not
           further described here.</p>
       </note>
-      <code type="none">
+      <code type="erl">
 %%%-----------------------------------------------------------
 %%% File    : Module_Interface_impl.erl
 %%% Author  : 
diff --git a/lib/orber/doc/src/corba.xml b/lib/orber/doc/src/corba.xml
index d89f035dba..fbfb55f2f2 100644
--- a/lib/orber/doc/src/corba.xml
+++ b/lib/orber/doc/src/corba.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1997</year><year>2016</year>
+      <year>1997</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -370,12 +370,12 @@ Example:
       <desc>
         <p>This function takes a <c>corbaname</c>, <c>corbaloc</c> or an IOR on the
           external string representation and returns the object reference.</p>
-        <p>To lookup the NameService reference, simply use
-          <c>"corbaloc:iiop:[email protected]:4001/NameService"</c></p>
-        <p>We can also resolve an object from the NameService by using
-          <c>"corbaname:iiop:[email protected]:4001/NameService#org/Erlang/MyObj"</c></p>
-        <p>To lookup the NameService reference with an IPv6 address, simply use
-          <c>"corbaloc:iiop:1.2@[FEC1:0:3:0:0312:44AF:FAB1:3D01]:4001/NameService"</c></p>
+        <p>To lookup the NameService reference, simply use:</p>
+        <code>corbaloc:iiop:[email protected]:4001/NameService</code>
+        <p>We can also resolve an object from the NameService by using:</p>
+        <code>corbaname:iiop:[email protected]:4001/NameService#org/Erlang/MyObj</code>
+        <p>To lookup the NameService reference with an IPv6 address, simply use:</p>
+        <code>corbaloc:iiop:1.2@[FEC1:0:3:0:0312:44AF:FAB1:3D01]:4001/NameService</code>
         <p>For more information about <c>corbaname</c> and <c>corbaloc</c>, see
           the User's Guide (Interoperable Naming Service).</p>
         <p>The <em>configuration</em> context is used to override the global
diff --git a/lib/orber/doc/src/fascicules.xml b/lib/orber/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/orber/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/orber/doc/src/fixed.xml b/lib/orber/doc/src/fixed.xml
index a751476cf7..ef4d1bd604 100644
--- a/lib/orber/doc/src/fixed.xml
+++ b/lib/orber/doc/src/fixed.xml
@@ -4,8 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>2002</year>
-      <year>2016</year>
+      <year>2002</year><year>2017</year>
       <holder>Ericsson AB, All Rights Reserved</holder>
     </copyright>
     <legalnotice>
@@ -38,8 +37,8 @@
   <description>
     <p>This module contains functions that gives an interface to the CORBA fixed type.</p>
     <p>The type <c>Fixed</c> used below is defined as:</p>
-    <code type="none">
-      -record(fixed, {digits, scale, value}).
+    <code type="erl">
+-record(fixed, {digits, scale, value}).
     </code>
     <p>where <c>digits</c> is the total amount of digits it consists of and 
       <c>scale</c> is the number of fractional digits. The <c>value</c> field
diff --git a/lib/orber/doc/src/lname.xml b/lib/orber/doc/src/lname.xml
index 09d6859777..c0c9be1a85 100644
--- a/lib/orber/doc/src/lname.xml
+++ b/lib/orber/doc/src/lname.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1997</year><year>2016</year>
+      <year>1997</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -44,14 +44,14 @@
       the Names are represented as standard Erlang lists and therefor will be removed 
       by the garbage collector when not in use.</p>
     <p>The type <c>NameComponent</c> used below is defined as:</p>
-    <code type="none">
-      -record('CosNaming_NameComponent', {id, kind=""}).
+    <code type="erl">
+-record('CosNaming_NameComponent', {id, kind=""}).
     </code>
     <p><c>id</c> and <c>kind</c> are strings. </p>
     <p>The record is defined in the file <c>CosNaming.hrl</c> and it 
       is included with:</p>
-    <code type="none">
-      -include_lib("orber/COSS/CosNaming/CosNaming.hrl").
+    <code type="erl">
+-include_lib("orber/COSS/CosNaming/CosNaming.hrl").
     </code>
   </description>
   <funcs>
diff --git a/lib/orber/doc/src/lname_component.xml b/lib/orber/doc/src/lname_component.xml
index 631e5d0244..8b8001c0fb 100644
--- a/lib/orber/doc/src/lname_component.xml
+++ b/lib/orber/doc/src/lname_component.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1997</year><year>2016</year>
+      <year>1997</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -44,14 +44,14 @@
       function because the NameComponents are represented as Erlang records and 
       therefor will be removed by the garbage collector when not in use.</p>
     <p>The type <c>NameComponent</c> used below is defined as:</p>
-    <code type="none">
-      -record('CosNaming_NameComponent', {id, kind=""}).
+    <code type="erl">
+-record('CosNaming_NameComponent', {id, kind=""}).
     </code>
     <p><c>id</c> and <c>kind</c> are strings. </p>
     <p>The record is defined in the file <c>CosNaming.hrl</c> and it 
       is included with:</p>
-    <code type="none">
-      -include_lib("orber/COSS/CosNaming/CosNaming.hrl").
+    <code type="erl">
+-include_lib("orber/COSS/CosNaming/CosNaming.hrl").
     </code>
   </description>
   <funcs>
diff --git a/lib/orber/doc/src/notes.gif b/lib/orber/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/orber/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/orber/doc/src/notes.xml b/lib/orber/doc/src/notes.xml
index 5a82270b28..35da4f73da 100644
--- a/lib/orber/doc/src/notes.xml
+++ b/lib/orber/doc/src/notes.xml
@@ -33,7 +33,28 @@
     <file>notes.xml</file>
   </header>
 
-  <section><title>Orber 3.8.3</title>
+  <section><title>Orber 3.8.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+        <item>
+	    <p> Removed the man warnings by using the code tag
+	    instead of c tag. </p>
+          <p>
+	    Own Id: OTP-14673</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Orber 3.8.3</title>
 
     <section><title>Improvements and New Features</title>
       <list>
diff --git a/lib/orber/doc/src/orber.gif b/lib/orber/doc/src/orber.gif
deleted file mode 100644
index d78cf7d8ed..0000000000
--- a/lib/orber/doc/src/orber.gif
+++ /dev/null
diff --git a/lib/orber/doc/src/part_notes.xml b/lib/orber/doc/src/part_notes.xml
deleted file mode 100644
index 61d9d4c3b9..0000000000
--- a/lib/orber/doc/src/part_notes.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>1997</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Orber Release Notes</title>
-    <prepared>Lars Thors&eacute;n, Peter Lundell</prepared>
-    <docno></docno>
-    <date>1999-04-20</date>
-    <rev>2.0</rev>
-  </header>
-  <description>
-    <p>The Orber Application is an Erlang implementation of a CORBA Object 
-      Request Broker.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/orber/doc/src/ref_man.gif b/lib/orber/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/orber/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/orber/doc/src/summary.html.src b/lib/orber/doc/src/summary.html.src
deleted file mode 100644
index f88ee7218f..0000000000
--- a/lib/orber/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-A CORBA Object Request Broker
diff --git a/lib/orber/doc/src/user_guide.gif b/lib/orber/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/orber/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/orber/vsn.mk b/lib/orber/vsn.mk
index 595e686cb7..bfd3f283b5 100644
--- a/lib/orber/vsn.mk
+++ b/lib/orber/vsn.mk
@@ -1 +1 @@
-ORBER_VSN = 3.8.3
+ORBER_VSN = 3.8.4
diff --git a/lib/os_mon/doc/src/Makefile b/lib/os_mon/doc/src/Makefile
index 91c7ae7bc3..4aa8879a91 100644
--- a/lib/os_mon/doc/src/Makefile
+++ b/lib/os_mon/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 1997-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 include $(ERL_TOP)/make/target.mk
@@ -43,16 +43,14 @@ XML_REF3_FILES = cpu_sup.xml \
 	os_sup.xml \
 	nteventlog.xml
 
-XML_REF6_FILES = os_mon_app.xml 
+XML_REF6_FILES = os_mon_app.xml
 
-XML_PART_FILES = part_notes.xml
+XML_PART_FILES =
 XML_CHAPTER_FILES = notes.xml
 
 BOOK_FILES = book.xml
 
-GIF_FILES = \
-	note.gif \
-	warning.gif
+GIF_FILES =
 
 XML_FILES = \
 	$(BOOK_FILES) $(XML_CHAPTER_FILES) \
@@ -74,9 +72,9 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -96,17 +94,17 @@ man: $(MAN3_FILES) $(MAN6_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
 	rm -f $(MAN3DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -122,4 +120,3 @@ release_docs_spec: docs
 	$(INSTALL_DATA) $(MAN6DIR)/* "$(RELEASE_PATH)/man/man6"
 
 release_spec:
-
diff --git a/lib/os_mon/doc/src/fascicules.xml b/lib/os_mon/doc/src/fascicules.xml
deleted file mode 100644
index fadd37eefb..0000000000
--- a/lib/os_mon/doc/src/fascicules.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/os_mon/doc/src/note.gif b/lib/os_mon/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/os_mon/doc/src/note.gif
+++ /dev/null
diff --git a/lib/os_mon/doc/src/notes.xml b/lib/os_mon/doc/src/notes.xml
index b29a64155e..cec0856a8b 100644
--- a/lib/os_mon/doc/src/notes.xml
+++ b/lib/os_mon/doc/src/notes.xml
@@ -31,6 +31,21 @@
   </header>
   <p>This document describes the changes made to the OS_Mon application.</p>
 
+<section><title>Os_Mon 2.4.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Os_Mon 2.4.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/os_mon/doc/src/part_notes.xml b/lib/os_mon/doc/src/part_notes.xml
deleted file mode 100644
index 364178acc3..0000000000
--- a/lib/os_mon/doc/src/part_notes.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>OS_Mon Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The operating system monitor, OS_Mon, provides services for
-      monitoring CPU load, disk usage, memory usage and OS messages.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/os_mon/doc/src/user_guide.gif b/lib/os_mon/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/os_mon/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/os_mon/doc/src/warning.gif b/lib/os_mon/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/os_mon/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/os_mon/vsn.mk b/lib/os_mon/vsn.mk
index e4250f577b..eb4f13ea9e 100644
--- a/lib/os_mon/vsn.mk
+++ b/lib/os_mon/vsn.mk
@@ -1 +1 @@
-OS_MON_VSN = 2.4.3
+OS_MON_VSN = 2.4.4
diff --git a/lib/otp_mibs/doc/src/Makefile b/lib/otp_mibs/doc/src/Makefile
index 62698b9300..c65e2a8e3c 100644
--- a/lib/otp_mibs/doc/src/Makefile
+++ b/lib/otp_mibs/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2003-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 2003-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 
@@ -38,7 +38,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
 XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = otp_mib.xml
 
-XML_PART_FILES = part.xml part_notes.xml
+XML_PART_FILES = part.xml
 XML_CHAPTER_FILES = \
 	introduction.xml \
 	mibs.xml \
@@ -50,7 +50,7 @@ XML_FILES = \
 	$(BOOK_FILES) $(XML_CHAPTER_FILES) \
 	$(XML_PART_FILES) $(XML_REF3_FILES) $(XML_APPLICATION_FILES)
 
-GIF_FILES = note.gif
+GIF_FILES =
 
 # ----------------------------------------------------
 
@@ -95,7 +95,7 @@ clean clean_docs:
 	rm -rf $(HTMLDIR)/*
 	rm -f $(MAN3DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 # ----------------------------------------------------
 # Release Target
@@ -113,4 +113,3 @@ release_docs_spec: docs
 	$(INSTALL_DATA) $(MAN3DIR)/* "$(RELEASE_PATH)/man/man3"
 
 release_spec:
-
diff --git a/lib/otp_mibs/doc/src/fascicules.xml b/lib/otp_mibs/doc/src/fascicules.xml
deleted file mode 100644
index c075478967..0000000000
--- a/lib/otp_mibs/doc/src/fascicules.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
-
diff --git a/lib/otp_mibs/doc/src/note.gif b/lib/otp_mibs/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/otp_mibs/doc/src/note.gif
+++ /dev/null
diff --git a/lib/otp_mibs/doc/src/notes.xml b/lib/otp_mibs/doc/src/notes.xml
index dbd2f47ffb..c99148a904 100644
--- a/lib/otp_mibs/doc/src/notes.xml
+++ b/lib/otp_mibs/doc/src/notes.xml
@@ -32,6 +32,21 @@
   <p>This document describes the changes made to the OTP_Mibs
     application.</p>
 
+<section><title>Otp_Mibs 1.1.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Otp_Mibs 1.1.1</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/otp_mibs/doc/src/part_notes.xml b/lib/otp_mibs/doc/src/part_notes.xml
deleted file mode 100644
index 5c03d28720..0000000000
--- a/lib/otp_mibs/doc/src/part_notes.xml
+++ /dev/null
@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>OTP_Mibs Release Notes</title>
-    <prepared>Ingela Anderton Andin</prepared>
-    <docno></docno>
-    <date>2004-09-07</date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The <em>OTP_Mibs</em> application provides an SNMP management
-      information base for Erlang nodes.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
-
diff --git a/lib/otp_mibs/vsn.mk b/lib/otp_mibs/vsn.mk
index 7a793007ee..13406cb5b1 100644
--- a/lib/otp_mibs/vsn.mk
+++ b/lib/otp_mibs/vsn.mk
@@ -1,4 +1,4 @@
-OTP_MIBS_VSN = 1.1.1
+OTP_MIBS_VSN = 1.1.2
 
 # Note: The branch 'otp_mibs' is defunct as of otp_mibs-1.0.4 and
 # should NOT be used again.
diff --git a/lib/parsetools/doc/src/Makefile b/lib/parsetools/doc/src/Makefile
index 8b03ed0fc7..e4cd2c0a76 100644
--- a/lib/parsetools/doc/src/Makefile
+++ b/lib/parsetools/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 1997-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 
@@ -39,7 +39,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
 XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = yecc.xml leex.xml
 
-XML_PART_FILES = part_notes.xml
+XML_PART_FILES =
 XML_CHAPTER_FILES = notes.xml
 
 BOOK_FILES = book.xml
@@ -48,8 +48,7 @@ XML_FILES = \
 	$(BOOK_FILES) $(XML_CHAPTER_FILES) \
 	$(XML_PART_FILES) $(XML_REF3_FILES) $(XML_APPLICATION_FILES)
 
-GIF_FILES = \
-	note.gif
+GIF_FILES =
 
 XML_HTML_FILES = \
 	notes_history.xml
@@ -69,10 +68,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -98,11 +97,11 @@ man: $(MAN3_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -117,4 +116,3 @@ release_docs_spec: docs
 
 
 release_spec:
-
diff --git a/lib/parsetools/doc/src/fascicules.xml b/lib/parsetools/doc/src/fascicules.xml
deleted file mode 100644
index fadd37eefb..0000000000
--- a/lib/parsetools/doc/src/fascicules.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/parsetools/doc/src/note.gif b/lib/parsetools/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/parsetools/doc/src/note.gif
+++ /dev/null
diff --git a/lib/parsetools/doc/src/notes.xml b/lib/parsetools/doc/src/notes.xml
index 3fa7169f50..b3370a06ab 100644
--- a/lib/parsetools/doc/src/notes.xml
+++ b/lib/parsetools/doc/src/notes.xml
@@ -31,6 +31,21 @@
   </header>
   <p>This document describes the changes made to the Parsetools application.</p>
 
+<section><title>Parsetools 2.1.6</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Warnings about unused functions in <c>leexinc.hrl</c>
+	    are suppressed. </p>
+          <p>
+	    Own Id: OTP-14697</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Parsetools 2.1.5</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/parsetools/doc/src/part_notes.xml b/lib/parsetools/doc/src/part_notes.xml
deleted file mode 100644
index 5e0824e839..0000000000
--- a/lib/parsetools/doc/src/part_notes.xml
+++ /dev/null
@@ -1,44 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>1997</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>PARSETOOLS Release Notes</title>
-    <prepared>Carl Velin</prepared>
-    <docno></docno>
-    <date>1997-04-28</date>
-    <rev>1.0</rev>
-    <file>part_notes.sgml</file>
-  </header>
-  <description>
-    <p>The <em>Parsetools</em> application contains utilities for
-      parsing and scanning. Yecc is an <term id="LALR-1"></term>parser
-      generator for Erlang, similar to yacc. Yecc takes a <term
-      id="BNF"></term>grammar definition as input, and produces Erlang
-      code for a parser as output. Leex is a regular expression based
-      lexical analyzer generator for Erlang, similar to lex or flex.</p>
-    <p>There are also release notes for
-      <seealso marker="notes_history">older versions</seealso>.</p>
-  </description>
-  <xi:lude href="notes.xml"/>
-</part>
-
diff --git a/lib/parsetools/doc/src/user_guide.gif b/lib/parsetools/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/parsetools/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/parsetools/doc/src/warning.gif b/lib/parsetools/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/parsetools/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/parsetools/include/leexinc.hrl b/lib/parsetools/include/leexinc.hrl
index b4449607cb..2a74c252ff 100644
--- a/lib/parsetools/include/leexinc.hrl
+++ b/lib/parsetools/include/leexinc.hrl
@@ -272,6 +272,8 @@ skip_cont(Rest, Line, {skip_token,Push}, Error) ->
 skip_cont(Rest, Line, {error,_S}, Error) ->
     skip_tokens(yystate(), Rest, Line, Rest, 0, Line, Error, reject, 0).
 
+-compile({nowarn_unused_function, [yyrev/1, yyrev/2, yypre/2, yysuf/2]}).
+
 yyrev(List) -> lists:reverse(List).
 yyrev(List, Tail) -> lists:reverse(List, Tail).
 yypre(List, N) -> lists:sublist(List, N).
@@ -282,6 +284,8 @@ yysuf(List, N) -> lists:nthtail(N, List).
 %% Line has been updated with respect to newlines in the prefix of
 %% Chars consisting of (TokenLength - AcceptLength) characters.
 
+-compile({nowarn_unused_function, adjust_line/4}).
+
 adjust_line(N, N, _Cs, L) -> L;
 adjust_line(T, A, [$\n|Cs], L) ->
     adjust_line(T-1, A, Cs, L-1);
diff --git a/lib/parsetools/vsn.mk b/lib/parsetools/vsn.mk
index 502ca00a47..b6d2ce0cd4 100644
--- a/lib/parsetools/vsn.mk
+++ b/lib/parsetools/vsn.mk
@@ -1 +1 @@
-PARSETOOLS_VSN = 2.1.5
+PARSETOOLS_VSN = 2.1.6
diff --git a/lib/public_key/doc/src/Makefile b/lib/public_key/doc/src/Makefile
index 5bdc5d4159..f5157fe87a 100644
--- a/lib/public_key/doc/src/Makefile
+++ b/lib/public_key/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 2008-2016. All Rights Reserved.
+# Copyright Ericsson AB 2008-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -40,7 +40,7 @@ XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = public_key.xml
 XML_REF6_FILES = public_key_app.xml
 
-XML_PART_FILES = part.xml part_notes.xml
+XML_PART_FILES = part.xml
 XML_CHAPTER_FILES = \
 	introduction.xml \
         public_key_records.xml \
@@ -50,9 +50,9 @@ XML_CHAPTER_FILES = \
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) \
-             $(XML_REF6_FILES) $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+             $(XML_REF6_FILES) $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
-GIF_FILES = note.gif
+GIF_FILES =
 
 # ----------------------------------------------------
 
diff --git a/lib/public_key/doc/src/fascicules.xml b/lib/public_key/doc/src/fascicules.xml
deleted file mode 100644
index 25e7008537..0000000000
--- a/lib/public_key/doc/src/fascicules.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="usersguide" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference  Manual
-  </fascicule>
-  <fascicule file="release_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
-
diff --git a/lib/public_key/doc/src/note.gif b/lib/public_key/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/public_key/doc/src/note.gif
+++ /dev/null
diff --git a/lib/public_key/doc/src/notes.xml b/lib/public_key/doc/src/notes.xml
index 7a7c828760..11012ee9e5 100644
--- a/lib/public_key/doc/src/notes.xml
+++ b/lib/public_key/doc/src/notes.xml
@@ -35,6 +35,55 @@
     <file>notes.xml</file>
   </header>
 
+<section><title>Public_Key 1.5.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fixed a bug in <c>public_key:ssh_encode/2</c> that made
+	    it possible to erroneously encode e.g. an RSA key with
+	    another type e.g. ECDSA in the resulting binary.</p>
+          <p>
+	    Own Id: OTP-14570 Aux Id: ERIERL-52, OTP-14676 </p>
+        </item>
+        <item>
+          <p>
+	    Corrected handling of parameterized EC keys in
+	    public_key:generate_key/1 so that it will work as
+	    expected instead of causing a runtime error in crypto.</p>
+          <p>
+	    Own Id: OTP-14620</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Public_Key 1.5.1</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Hostname verification: Add handling of the general name
+	    <c>iPAddress</c> in certificate's subject alternative
+	    name extension (<c>subjAltName</c>).</p>
+          <p>
+	    Own Id: OTP-14653</p>
+        </item>
+        <item>
+          <p>
+	    Correct key handling in pkix_test_data/1 and use a
+	    generic example mail address instead of an existing one.</p>
+          <p>
+	    Own Id: OTP-14766</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Public_Key 1.5</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/public_key/doc/src/part_notes.xml b/lib/public_key/doc/src/part_notes.xml
deleted file mode 100644
index 17f06d14f5..0000000000
--- a/lib/public_key/doc/src/part_notes.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2008</year>
-      <year>2016</year>
-      <holder>Ericsson AB, All Rights Reserved</holder>
-    </copyright>
-    <legalnotice>
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
- 
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-  The Initial Developer of the Original Code is Ericsson AB.
-    </legalnotice>
-
-    <title>public_key Release Notes</title>
-    <prepared>Ingela Anderton Andin</prepared>
-    <docno></docno>
-    <date>2008-01-22</date>
-    <rev></rev>
-  </header>
-  <description>
-    <p></p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
-
diff --git a/lib/public_key/doc/src/public_key.xml b/lib/public_key/doc/src/public_key.xml
index 3040f2db0d..dea35bc390 100644
--- a/lib/public_key/doc/src/public_key.xml
+++ b/lib/public_key/doc/src/public_key.xml
@@ -774,6 +774,7 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
 
   <func>
     <name>pkix_test_data(Options) -> Config </name>
+    <name>pkix_test_data([chain_opts()]) -> [conf_opt()]</name>
     <fsummary>Creates certificate test data.</fsummary>
     <type>
       <v>Options = #{chain_type() := chain_opts()} </v>
@@ -781,30 +782,83 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
       
       <v>chain_type() = server_chain | client_chain </v>
 
-      <v>chain_opts() = #{chain_end() := [cert_opt()],
-          intermediates => [[cert_opt()]]}</v>
-      <d>A valid chain must have at least a ROOT and a peer cert</d>
-
-      <v>chain_end() = root | peer </v>
-
+      <v>chain_opts() = #{root := [cert_opt()] | root_cert(),
+      peer := [cert_opt()],
+      intermediates => [[cert_opt()]]}</v>
+      <d>
+	A valid chain must have at least a ROOT and a peer cert.
+	The root cert can be given either as a cert pre-generated by
+	<seealso marker="#pkix_test_root_cert-2">
+	  pkix_test_root_cert/2
+	</seealso>, or as root cert generation options.
+      </d>
+      <v>root_cert() = #{cert := der_encoded(), key := Key}</v>
+      <d>
+	A root certificate generated by
+	<seealso marker="#pkix_test_root_cert-2">
+	  pkix_test_root_cert/2
+	</seealso>.
+      </d>
       <v>cert_opt() = {Key, Value}</v>
       <d>For available options see <seealso marker="#cert_opt"> cert_opt()</seealso> below.</d>
 
       <v>Config = #{server_config := [conf_opt()],
       client_config := [conf_opt()]}</v>
 
-      <v>conf_opt() = {cert, der_encoded()} | {key, der_encoded()} |{cacerts, [der_encoded()]}</v>
-      <d>This is a subset of the type <seealso marker="ssl:ssl#type-ssloption"> ssl:ssl_option()</seealso> </d>
+      <v>conf_opt() = {cert, der_encoded()} | {key, PrivateKey} |{cacerts, [der_encoded()]}</v>
+      <d>
+	This is a subset of the type
+	<seealso marker="ssl:ssl#type-ssloption"> ssl:ssl_option()</seealso>.
+	<c>PrivateKey</c> is what
+	<seealso marker="#generate_key-1">generate_key/1</seealso>
+	returns.
+      </d>
     </type>
     
     <desc>
-      <p>Creates certificate test data to facilitate automated testing
-      of applications using X509-certificates often through
-      SSL/TLS. The test data can be used when you have control
-      over both the client and the server in a test scenario.
+      <p>
+	Creates certificate configuration(s) consisting of certificate
+	and its private key plus CA certificate bundle, for a client
+	and a server, intended to facilitate automated testing
+	of applications using X509-certificates,
+	often through SSL/TLS. The test data can be used
+	when you have control over both the client and the server
+	in a test scenario.
+      </p>
+      <p>
+	When this function is called with a map containing
+	client and server chain specifications;
+	it generates both a client and a server certificate chain
+	where the <c>cacerts</c>
+	returned for the server contains the root cert the server
+	should trust and the intermediate certificates the server
+	should present to connecting clients.
+	The root cert the server should trust is the one used
+	as root of the client certificate chain.
+	Vice versa applies to the <c>cacerts</c> returned for the client.
+	The root cert(s) can either be pre-generated with
+	<seealso marker="#pkix_test_root_cert-2">
+	  pkix_test_root_cert/2
+	</seealso>, or if options are specified; it is (they are)
+	 generated.
+      </p>
+      <p>
+	When this function is called with a list of certificate options;
+	it generates a configuration with just one node certificate
+	where <c>cacerts</c> contains the root cert
+	and the intermediate certs that should be presented to a peer.
+	In this case the same root cert must be used for all peers.
+	This is useful in for example an Erlang distributed cluster
+	where any node,	towards another node, acts either
+	as a server or as a client depending on who connects to whom.
+	The generated certificate contains a subject altname,
+	which is not needed in a client certificate,
+	but makes the certificate useful for both roles.
+      </p>
+      <p>
+	The <marker id="cert_opt"/><c>cert_opt()</c>
+	type consists of the following options:
       </p>
-      
-      <p> The <marker id="cert_opt"/> cert_opt() type consists of the following options: </p>
       <taglist>
 	<tag> {digest, digest_type()}</tag>
 	<item><p>Hash algorithm to be used for
@@ -851,6 +905,36 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
     </desc>
   </func>
   
+  <func>
+    <name>pkix_test_root_cert(Name, Options) -> RootCert</name>
+    <fsummary>Generates a test data root cert.</fsummary>
+    <type>
+      <v>Name = string()</v>
+      <d>The root certificate name.</d>
+      <v>Options = [cert_opt()]</v>
+      <d>
+	For available options see
+	<seealso marker="#cert_opt">cert_opt()</seealso>
+	under
+	<seealso marker="#pkix_test_data-1">pkix_test_data/1</seealso>.
+      </d>
+      <v>RootCert = #{cert := der_encoded(), key := Key}</v>
+      <d>
+	A root certificate and key.  The <c>Key</c> is generated by
+	<seealso marker="#generate_key-1">generate_key/1</seealso>.
+      </d>
+    </type>
+    <desc>
+      <p>
+	Generates a root certificate that can be used
+	in multiple calls to
+	<seealso marker="#pkix_test_data-1">pkix_test_data/1</seealso>
+	when you want the same root certificate for
+	several generated certificates.
+      </p>
+    </desc>
+  </func>
+
   <func>  
     <name>pkix_verify(Cert, Key) -> boolean()</name>
     <fsummary>Verifies PKIX x.509 certificate signature.</fsummary>
@@ -883,8 +967,8 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
     </type>
     <desc>
       <p>This function checks that the <i>Presented Identifier</i> (e.g hostname) in a peer certificate
-      conforms with the Expected Identifier that the client wants to connect to.
-      This functions is intended to be added as an extra client check to the peer certificate when performing
+      is in agreement with the <i>Reference Identifier</i> that the client expects to be connected to.
+      The function is intended to be added as an extra client check of the peer certificate when performing
       <seealso marker="public_key:public_key#pkix_path_validation-3">public_key:pkix_path_validation/3</seealso>
       </p>
       <p>See <url href="https://tools.ietf.org/html/rfc6125">RFC 6125</url>
@@ -897,7 +981,8 @@ fun(#'DistributionPoint'{}, #'CertificateList'{},
       <p>The <c>{OtherRefId,term()}</c> is defined by the user and is passed to the <c>match_fun</c>, if defined.
       If that term is a binary, it will be converted to a string.
       </p>
-      <p>The <c>ip</c> takes a 4-tuple or a 
+      <p>The <c>ip</c> Reference ID takes an <seealso marker="inet:inet#type-ip_address">inet:ip_address()</seealso>
+      or an ip address in string format (E.g "10.0.1.1" or "1234::5678:9012") as second element.
       </p>
     </desc>
   </func>
diff --git a/lib/public_key/doc/src/public_key_records.xml b/lib/public_key/doc/src/public_key_records.xml
index 739310c88b..9ebdbb244d 100644
--- a/lib/public_key/doc/src/public_key_records.xml
+++ b/lib/public_key/doc/src/public_key_records.xml
@@ -70,10 +70,10 @@
       <p><c>| {dNSName, string()}</c></p>
       <p><c>| {x400Address, string()}</c></p>
       <p><c>| {directoryName, {rdnSequence, [#AttributeTypeAndValue'{}]}}</c></p>
-      <p><c>| {eidPartyName, special_string()}</c></p>
-      <p><c>| {eidPartyName, special_string(), special_string()}</c></p>
+      <p><c>| {ediPartyName, special_string()}</c></p>
+      <p><c>| {ediPartyName, special_string(), special_string()}</c></p>
       <p><c>| {uniformResourceIdentifier, string()}</c></p>
-      <p><c>| {ipAddress, string()}</c></p>
+      <p><c>| {iPAddress, string()}</c></p>
       <p><c>| {registeredId, oid()}</c></p>
       <p><c>| {otherName, term()}</c></p>
       </item>
diff --git a/lib/public_key/src/pubkey_cert.erl b/lib/public_key/src/pubkey_cert.erl
index 13833830a7..c433a96585 100644
--- a/lib/public_key/src/pubkey_cert.erl
+++ b/lib/public_key/src/pubkey_cert.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2008-2016. All Rights Reserved.
+%% Copyright Ericsson AB 2008-2017. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -33,11 +33,12 @@
 	 is_fixed_dh_cert/1, verify_data/1, verify_fun/4, 
 	 select_extension/2, match_name/3,
 	 extensions_list/1, cert_auth_key_id/1, time_str_2_gregorian_sec/1,
-         gen_test_certs/1]).
+         gen_test_certs/1, root_cert/2]).
 
 -define(NULL, 0).
 
--export_type([chain_opts/0, test_config/0]).
+-export_type([cert_opt/0, chain_opts/0, conf_opt/0,
+              test_config/0, test_root_cert/0]).
 
 -type cert_opt()  :: {digest, public_key:digest_type()} | 
                      {key, public_key:key_params() | public_key:private_key()} | 
@@ -46,9 +47,12 @@
 -type chain_end()   :: root | peer.
 -type chain_opts()  :: #{chain_end() := [cert_opt()],  intermediates =>  [[cert_opt()]]}.
 -type conf_opt()    :: {cert, public_key:der_encoded()} | 
-                       {key,  public_key:der_encoded()} |
+                       {key,  public_key:private_key()} |
                        {cacerts, [public_key:der_encoded()]}.
--type test_config() :: #{server_config := [conf_opt()],  client_config :=  [conf_opt()]}.
+-type test_config() ::
+        #{server_config := [conf_opt()],  client_config :=  [conf_opt()]}.
+-type test_root_cert() ::
+        #{cert := binary(), key := public_key:private_key()}.
 %%====================================================================
 %% Internal application APIu
 %%====================================================================
@@ -430,31 +434,94 @@ match_name(Fun, Name, PermittedName, [Head | Tail]) ->
 	false ->
 	    match_name(Fun, Name, Head, Tail)
     end.
+
 %%%
--spec gen_test_certs(#{server_chain:= chain_opts(), client_chain:= chain_opts()}) -> test_config().
- 
-%% Generates server and and client configuration for testing 
+-spec gen_test_certs(#{server_chain:= chain_opts(),
+                       client_chain:= chain_opts()} |
+                     chain_opts()) ->
+                            test_config() |
+                            [conf_opt()].
+%%
+%% Generates server and and client configuration for testing
 %% purposes. All certificate options have default values
-gen_test_certs(#{client_chain := #{root := ClientRootConf,
-                                   intermediates := ClientCAs,
-                                   peer := ClientPeer}, 
-                 server_chain := 
-                     #{root := ServerRootConf,
-                       intermediates := ServerCAs,
-                       peer := ServerPeer}}) ->
-    SRootKey = gen_key(proplists:get_value(key, ServerRootConf, default_key_gen())),
-    CRootKey = gen_key(proplists:get_value(key, ClientRootConf, default_key_gen())),
-    ServerRoot = root_cert("server", SRootKey, ClientRootConf),
-    ClientRoot = root_cert("client", CRootKey, ServerRootConf),
-    
-    [{ServerDERCert, ServerDERKey} | ServerCAsKeys] = config(server, ServerRoot, 
-                                                       SRootKey, lists:reverse([ServerPeer | lists:reverse(ServerCAs)])),
-    [{ClientDERCert, ClientDERKey} | ClientCAsKeys] = config(client, ClientRoot, 
-                                                       CRootKey, lists:reverse([ClientPeer | lists:reverse(ClientCAs)])),
-    ServerDERCA = ca_config(ClientRoot, ServerCAsKeys),
-    ClientDERCA = ca_config(ServerRoot, ClientCAsKeys),
-    #{server_config => [{cert, ServerDERCert}, {key, ServerDERKey}, {cacerts, ServerDERCA}], 
-      client_config => [{cert, ClientDERCert}, {key, ClientDERKey}, {cacerts, ClientDERCA}]}.
+gen_test_certs(
+  #{client_chain :=
+        #{root := ClientRoot,
+          intermediates := ClientCAs,
+          peer := ClientPeer},
+    server_chain :=
+        #{root := ServerRoot,
+          intermediates := ServerCAs,
+          peer := ServerPeer}}) ->
+    #{cert := ServerRootCert, key := ServerRootKey} =
+        case ServerRoot of
+            #{} ->
+                ServerRoot;
+            ServerRootConf when is_list(ServerRootConf) ->
+                root_cert("SERVER ROOT CA", ServerRootConf)
+        end,
+    #{cert := ClientRootCert, key := ClientRootKey} =
+        case ClientRoot of
+            #{} ->
+                ClientRoot;
+            ClientRootConf when is_list(ClientRootConf) ->
+                root_cert("CLIENT ROOT CA", ClientRootConf)
+        end,
+    [{ServerDERCert, ServerDERKey} | ServerCAsKeys] =
+        config(
+          server, ServerRootCert, ServerRootKey,
+          lists:reverse([ServerPeer | lists:reverse(ServerCAs)])),
+    [{ClientDERCert, ClientDERKey} | ClientCAsKeys] =
+        config(
+          client, ClientRootCert, ClientRootKey,
+          lists:reverse([ClientPeer | lists:reverse(ClientCAs)])),
+    ServerDERCA = ca_config(ClientRootCert, ServerCAsKeys),
+    ClientDERCA = ca_config(ServerRootCert, ClientCAsKeys),
+    #{server_config =>
+          [{cert, ServerDERCert}, {key, ServerDERKey},
+           {cacerts, ServerDERCA}],
+      client_config =>
+          [{cert, ClientDERCert}, {key, ClientDERKey},
+           {cacerts, ClientDERCA}]};
+%%
+%% Generates a node configuration for testing purposes,
+%% when using the node server cert also for the client.
+%% All certificate options have default values
+gen_test_certs(
+  #{root := Root, intermediates := CAs, peer := Peer}) ->
+    #{cert := RootCert, key := RootKey} =
+        case Root of
+            #{} ->
+                Root;
+            RootConf when is_list(RootConf) ->
+                root_cert("SERVER ROOT CA", RootConf)
+        end,
+    [{DERCert, DERKey} | CAsKeys] =
+        config(
+          server, RootCert, RootKey,
+          lists:reverse([Peer | lists:reverse(CAs)])),
+    DERCAs = ca_config(RootCert, CAsKeys),
+    [{cert, DERCert}, {key, DERKey}, {cacerts, DERCAs}].
+
+%%%
+-spec root_cert(string(), [cert_opt()]) -> test_root_cert().
+%%
+%% Generate a self-signed root cert
+root_cert(Name, Opts) ->
+    PrivKey = gen_key(proplists:get_value(key, Opts, default_key_gen())),
+    TBS = cert_template(),
+    Issuer = subject("root", Name),
+    OTPTBS =
+        TBS#'OTPTBSCertificate'{
+          signature = sign_algorithm(PrivKey, Opts),
+          issuer = Issuer,
+          validity = validity(Opts),
+          subject = Issuer,
+          subjectPublicKeyInfo = public_key(PrivKey),
+          extensions = extensions(undefined, ca, Opts)
+         },
+    #{cert => public_key:pkix_sign(OTPTBS, PrivKey),
+      key => PrivKey}.
 
 %%--------------------------------------------------------------------
 %%% Internal functions
@@ -1103,7 +1170,7 @@ missing_basic_constraints(OtpCert, SelfSigned, ValidationState, VerifyFun, UserS
 	     UserState}
     end.
 
- gen_key(KeyGen) ->
+gen_key(KeyGen) ->
      case is_key(KeyGen) of
          true ->
              KeyGen;
@@ -1120,31 +1187,17 @@ is_key(#'ECPrivateKey'{}) ->
 is_key(_) ->
     false.
 
-root_cert(Role, PrivKey, Opts) ->
-     TBS = cert_template(),
-     Issuer = issuer("root", Role, " ROOT CA"),
-     OTPTBS = TBS#'OTPTBSCertificate'{
-                signature = sign_algorithm(PrivKey, Opts),
-                issuer = Issuer,
-                validity = validity(Opts),  
-                subject = Issuer,
-                subjectPublicKeyInfo = public_key(PrivKey),
-                extensions = extensions(Role, ca, Opts)
-               },
-     public_key:pkix_sign(OTPTBS, PrivKey).
 
 cert_template() ->
     #'OTPTBSCertificate'{
        version = v3,              
-       serialNumber = trunc(rand:uniform()*100000000)*10000 + 1,
+       serialNumber = erlang:unique_integer([positive, monotonic]),
        issuerUniqueID = asn1_NOVALUE,       
        subjectUniqueID = asn1_NOVALUE
       }.
-issuer(Contact, Role, Name) ->
-  subject(Contact, Role ++ Name).
 
 subject(Contact, Name) ->
-    Opts = [{email, Contact ++ "@erlang.org"},
+    Opts = [{email, Contact ++ "@example.org"},
 	    {name,  Name},
 	    {city, "Stockholm"},
 	    {country, "SE"},
@@ -1176,9 +1229,11 @@ validity(Opts) ->
     DefFrom0 = calendar:gregorian_days_to_date(calendar:date_to_gregorian_days(date())-1),
     DefTo0   = calendar:gregorian_days_to_date(calendar:date_to_gregorian_days(date())+7),
     {DefFrom, DefTo} = proplists:get_value(validity, Opts, {DefFrom0, DefTo0}),
-    Format = fun({Y,M,D}) -> 
-                     lists:flatten(io_lib:format("~w~2..0w~2..0w000000Z",[Y,M,D])) 
-             end,
+    Format =
+        fun({Y,M,D}) ->
+                lists:flatten(
+                  io_lib:format("~4..0w~2..0w~2..0w000000Z",[Y,M,D]))
+        end,
     #'Validity'{notBefore={generalTime, Format(DefFrom)},
 		notAfter ={generalTime, Format(DefTo)}}.
 
@@ -1223,12 +1278,12 @@ cert_chain(Role, IssuerCert, IssuerKey, [PeerOpts], _, Acc) ->
     Key = gen_key(proplists:get_value(key, PeerOpts, default_key_gen())),
     Cert = cert(Role, public_key:pkix_decode_cert(IssuerCert, otp), 
                 IssuerKey, Key, "admin", " Peer cert", PeerOpts, peer),
-    [{Cert, Key}, {IssuerCert, IssuerKey} | Acc];
+    [{Cert, encode_key(Key)}, {IssuerCert, encode_key(IssuerKey)} | Acc];
 cert_chain(Role, IssuerCert, IssuerKey, [CAOpts | Rest], N, Acc) ->
     Key = gen_key(proplists:get_value(key, CAOpts, default_key_gen())),
     Cert = cert(Role, public_key:pkix_decode_cert(IssuerCert, otp), IssuerKey, Key, "webadmin", 
                 " Intermidiate CA " ++ integer_to_list(N), CAOpts, ca),
-    cert_chain(Role, Cert, Key, Rest, N+1, [{IssuerCert, IssuerKey} | Acc]).
+    cert_chain(Role, Cert, Key, Rest, N+1, [{IssuerCert, encode_key(IssuerKey)} | Acc]).
 
 cert(Role, #'OTPCertificate'{tbsCertificate = #'OTPTBSCertificate'{subject = Issuer}}, 
      PrivKey, Key, Contact, Name, Opts, Type) ->
@@ -1240,7 +1295,6 @@ cert(Role, #'OTPCertificate'{tbsCertificate = #'OTPTBSCertificate'{subject = Iss
                subject = subject(Contact, atom_to_list(Role) ++ Name),
                subjectPublicKeyInfo = public_key(Key),
                extensions = extensions(Role, Type, Opts)
-               
               },
     public_key:pkix_sign(OTPTBS, PrivKey).
 
@@ -1297,7 +1351,7 @@ add_default_extensions(server, peer, Exts) ->
               ],
     add_default_extensions(Default, Exts);
     
-add_default_extensions(_, peer, Exts) ->
+add_default_extensions(client, peer, Exts) ->
     Exts.
 
 add_default_extensions(Defaults0, Exts) ->
@@ -1311,3 +1365,10 @@ add_default_extensions(Defaults0, Exts) ->
                                end, Defaults0),
     Exts ++ Defaults.
 
+encode_key(#'RSAPrivateKey'{} = Key) ->
+    {'RSAPrivateKey', public_key:der_encode('RSAPrivateKey', Key)};
+encode_key(#'ECPrivateKey'{} = Key) ->
+    {'ECPrivateKey', public_key:der_encode('ECPrivateKey', Key)};
+encode_key(#'DSAPrivateKey'{} = Key) ->
+    {'DSAPrivateKey', public_key:der_encode('DSAPrivateKey', Key)}.
+
diff --git a/lib/public_key/src/pubkey_ssh.erl b/lib/public_key/src/pubkey_ssh.erl
index 75c1880655..02c061efc9 100644
--- a/lib/public_key/src/pubkey_ssh.erl
+++ b/lib/public_key/src/pubkey_ssh.erl
@@ -29,7 +29,17 @@
 	]).
 
 -define(UINT32(X), X:32/unsigned-big-integer).
--define(STRING(X), ?UINT32((size(X))), (X)/binary).
+-define(STRING(X), ?UINT32((byte_size(X))), (X)/binary).
+
+-define(DEC_BIN(X,Len),   ?UINT32(Len), X:Len/binary ).
+-define(DEC_MPINT(I,Len), ?DEC_INT(I,Len) ).
+-define(DEC_INT(I,Len),   ?UINT32(Len), I:Len/big-signed-integer-unit:8 ).
+
+-define(Empint(X),  (mpint(X))/binary ).
+-define(Estring(X), (string(X))/binary ).
+
+-define(b64enc(X), base64:encode(iolist_to_binary(X)) ).
+-define(b64mime_dec(X), base64:mime_decode(iolist_to_binary(X)) ).
 
 %% Max encoded line length is 72, but conformance examples use 68
 %% Comment from rfc 4716: "The following are some examples of public
@@ -47,12 +57,12 @@
 %% Description: Decodes a ssh file-binary.
 %%--------------------------------------------------------------------
 decode(Bin, public_key)->
-    case binary:match(Bin, begin_marker()) of
-	nomatch ->
-	    openssh_decode(Bin, openssh_public_key);
-	_ ->
-	    rfc4716_decode(Bin)
-    end;
+    PKtype =
+        case binary:match(Bin, begin_marker()) of
+            nomatch -> openssh_public_key;
+            _ -> rfc4716_public_key
+        end,
+    decode(Bin, PKtype);
 decode(Bin, rfc4716_public_key) ->
     rfc4716_decode(Bin);
 decode(Bin, ssh2_pubkey) ->
@@ -155,7 +165,7 @@ rfc4716_decode_line(Line, Lines, Acc) ->
 	    rfc4716_decode_lines(Lines, [{string_decode(Tag), unicode_decode(Value)} | Acc]);
 	_ ->
 	    {Body, Rest} = join_entry([Line | Lines], []),
-	    {lists:reverse(Acc), rfc4716_pubkey_decode(base64:mime_decode(Body)), Rest}
+	    {lists:reverse(Acc), rfc4716_pubkey_decode(?b64mime_dec(Body)), Rest}
     end.
 
 join_entry([<<"---- END SSH2 PUBLIC KEY ----", _/binary>>| Lines], Entry) ->
@@ -164,26 +174,8 @@ join_entry([Line | Lines], Entry) ->
     join_entry(Lines, [Line | Entry]).
 
 
-rfc4716_pubkey_decode(<<?UINT32(Len), Type:Len/binary,
-			?UINT32(SizeE), E:SizeE/binary,
-			?UINT32(SizeN), N:SizeN/binary>>) when Type == <<"ssh-rsa">> ->
-    #'RSAPublicKey'{modulus = erlint(SizeN, N),
-		    publicExponent = erlint(SizeE, E)};
-
-rfc4716_pubkey_decode(<<?UINT32(Len), Type:Len/binary,
-			?UINT32(SizeP), P:SizeP/binary,
-			?UINT32(SizeQ), Q:SizeQ/binary,
-			?UINT32(SizeG), G:SizeG/binary,
-			?UINT32(SizeY), Y:SizeY/binary>>) when Type == <<"ssh-dss">> ->
-    {erlint(SizeY, Y),
-     #'Dss-Parms'{p = erlint(SizeP, P),
-		  q = erlint(SizeQ, Q),
-		  g = erlint(SizeG, G)}};
-rfc4716_pubkey_decode(<<?UINT32(Len), ECDSA_SHA2_etc:Len/binary,
-			?UINT32(SizeId), Id:SizeId/binary,
-			?UINT32(SizeQ), Q:SizeQ/binary>>) ->
-    <<"ecdsa-sha2-", Id/binary>> = ECDSA_SHA2_etc,
-    {#'ECPoint'{point = Q}, {namedCurve,public_key:ssh_curvename2oid(Id)}}.
+rfc4716_pubkey_decode(BinKey) -> ssh2_pubkey_decode(BinKey).
+
 
 openssh_decode(Bin, FileType) ->
     Lines = binary:split(Bin, <<"\n">>, [global]),
@@ -267,18 +259,14 @@ decode_comment(Comment) ->
 
 openssh_pubkey_decode(Type,  Base64Enc) ->
     try
-	ssh2_pubkey_decode(Type,  base64:mime_decode(Base64Enc))
+        <<?DEC_BIN(Type,_TL), Bin/binary>> = ?b64mime_dec(Base64Enc),
+	ssh2_pubkey_decode(Type,  Bin)
     catch
 	_:_ ->
-	    {Type, base64:mime_decode(Base64Enc)}
+	    {Type, ?b64mime_dec(Base64Enc)}
     end.
 
 
-erlint(MPIntSize, MPIntValue) ->
-    Bits= MPIntSize * 8,
-    <<Integer:Bits/integer>> = MPIntValue,
-    Integer.
-
 ssh1_rsa_pubkey_decode(MBin, EBin) ->
     #'RSAPublicKey'{modulus = integer_decode(MBin),
 		    publicExponent = integer_decode(EBin)}.
@@ -306,12 +294,12 @@ do_encode(Type, Key, Attributes) ->
 
 rfc4716_encode(Key, [],[]) ->
     iolist_to_binary([begin_marker(),"\n",
-			     split_lines(base64:encode(ssh2_pubkey_encode(Key))),
+			     split_lines(?b64enc(ssh2_pubkey_encode(Key))),
 			     "\n", end_marker(), "\n"]);
 rfc4716_encode(Key, [], [_|_] = Acc) ->
     iolist_to_binary([begin_marker(), "\n",
 			     lists:reverse(Acc),
-			     split_lines(base64:encode(ssh2_pubkey_encode(Key))),
+			     split_lines(?b64enc(ssh2_pubkey_encode(Key))),
 			     "\n", end_marker(), "\n"]);
 rfc4716_encode(Key, [ Header | Headers], Acc) ->
     LinesStr = rfc4716_encode_header(Header),
@@ -340,7 +328,7 @@ rfc4716_encode_value(Value) ->
 
 openssh_encode(openssh_public_key, Key, Attributes) ->
     Comment = proplists:get_value(comment, Attributes, ""),
-    Enc = base64:encode(ssh2_pubkey_encode(Key)),
+    Enc = ?b64enc(ssh2_pubkey_encode(Key)),
     iolist_to_binary([key_type(Key), " ",  Enc,  " ", Comment, "\n"]);
 
 openssh_encode(auth_keys, Key, Attributes) ->
@@ -365,10 +353,10 @@ openssh_encode(known_hosts, Key, Attributes) ->
     end.
 
 openssh_ssh2_auth_keys_encode(undefined, Key, Comment) ->
-    iolist_to_binary([key_type(Key)," ",  base64:encode(ssh2_pubkey_encode(Key)), line_end(Comment)]);
+    iolist_to_binary([key_type(Key)," ",  ?b64enc(ssh2_pubkey_encode(Key)), line_end(Comment)]);
 openssh_ssh2_auth_keys_encode(Options, Key, Comment) ->
     iolist_to_binary([comma_list_encode(Options, []), " ",
-			     key_type(Key)," ", base64:encode(ssh2_pubkey_encode(Key)), line_end(Comment)]).
+			     key_type(Key)," ", ?b64enc(ssh2_pubkey_encode(Key)), line_end(Comment)]).
 
 openssh_ssh1_auth_keys_encode(undefined, Bits,
 			      #'RSAPublicKey'{modulus = N, publicExponent = E},
@@ -383,7 +371,7 @@ openssh_ssh1_auth_keys_encode(Options, Bits,
 
 openssh_ssh2_know_hosts_encode(Hostnames, Key, Comment) ->
     iolist_to_binary([comma_list_encode(Hostnames, []), " ",
-			     key_type(Key)," ",  base64:encode(ssh2_pubkey_encode(Key)), line_end(Comment)]).
+			     key_type(Key)," ",  ?b64enc(ssh2_pubkey_encode(Key)), line_end(Comment)]).
 
 openssh_ssh1_known_hosts_encode(Hostnames, Bits,
 				#'RSAPublicKey'{modulus = N, publicExponent = E},
@@ -411,71 +399,37 @@ comma_list_encode([Option | Rest], Acc) ->
 
 
 ssh2_pubkey_encode(#'RSAPublicKey'{modulus = N, publicExponent = E}) ->
-    ssh2_pubkey_encode({#'RSAPublicKey'{modulus = N, publicExponent = E}, 'ssh-rsa'});
-
-ssh2_pubkey_encode({Key, 'rsa-sha2-256'}) -> ssh2_pubkey_encode({Key, 'ssh-rsa'});
-ssh2_pubkey_encode({Key, 'rsa-sha2-512'}) -> ssh2_pubkey_encode({Key, 'ssh-rsa'});
-ssh2_pubkey_encode({#'RSAPublicKey'{modulus = N, publicExponent = E}, SignAlg}) ->
-    SignAlgName = list_to_binary(atom_to_list(SignAlg)),
-    StrLen = size(SignAlgName),
-    EBin = mpint(E),
-    NBin = mpint(N),
-    <<?UINT32(StrLen), SignAlgName:StrLen/binary,
-      EBin/binary,
-      NBin/binary>>;
-ssh2_pubkey_encode({{_,#'Dss-Parms'{}}=Key, _}) ->
-    ssh2_pubkey_encode(Key);
+    <<?STRING(<<"ssh-rsa">>), ?Empint(E), ?Empint(N)>>;
 ssh2_pubkey_encode({Y,  #'Dss-Parms'{p = P, q = Q, g = G}}) ->
-    TypeStr = <<"ssh-dss">>,
-    StrLen = size(TypeStr),
-    PBin = mpint(P),
-    QBin = mpint(Q),
-    GBin = mpint(G),
-    YBin = mpint(Y),
-    <<?UINT32(StrLen), TypeStr:StrLen/binary,
-      PBin/binary,
-      QBin/binary,
-      GBin/binary,
-      YBin/binary>>;
-ssh2_pubkey_encode({{#'ECPoint'{},_}=Key, _}) ->
-    ssh2_pubkey_encode(Key);
+    <<?STRING(<<"ssh-dss">>), ?Empint(P), ?Empint(Q), ?Empint(G), ?Empint(Y)>>;
 ssh2_pubkey_encode(Key={#'ECPoint'{point = Q}, {namedCurve,OID}}) ->
-    TypeStr = key_type(Key),
-    StrLen = size(TypeStr),
-    IdB = public_key:oid2ssh_curvename(OID),
-    <<?UINT32(StrLen), TypeStr:StrLen/binary,
-      (string(IdB))/binary,
-      (string(Q))/binary>>.
+    Curve = public_key:oid2ssh_curvename(OID),
+    <<?STRING(key_type(Key)), ?Estring(Curve), ?Estring(Q)>>.
 
 
-ssh2_pubkey_decode(Bin = <<?UINT32(Len), Type:Len/binary, _/binary>>) ->
+ssh2_pubkey_decode(<<?DEC_BIN(Type,_TL), Bin/binary>>) ->
     ssh2_pubkey_decode(Type, Bin).
 
-ssh2_pubkey_decode(<<"rsa-sha2-256">>, Bin) -> ssh2_pubkey_decode(<<"ssh-rsa">>, Bin);
-ssh2_pubkey_decode(<<"rsa-sha2-512">>, Bin) -> ssh2_pubkey_decode(<<"ssh-rsa">>, Bin);
+%% ssh2_pubkey_decode(<<"rsa-sha2-256">>, Bin) -> ssh2_pubkey_decode(<<"ssh-rsa">>, Bin);
+%% ssh2_pubkey_decode(<<"rsa-sha2-512">>, Bin) -> ssh2_pubkey_decode(<<"ssh-rsa">>, Bin);
 ssh2_pubkey_decode(<<"ssh-rsa">>,
-		   <<?UINT32(Len),   _:Len/binary,
-		     ?UINT32(SizeE), E:SizeE/binary,
-		     ?UINT32(SizeN), N:SizeN/binary>>) ->
-    #'RSAPublicKey'{modulus = erlint(SizeN, N),
-		    publicExponent = erlint(SizeE, E)};
+                   <<?DEC_INT(E, _EL),
+                     ?DEC_INT(N, _NL)>>) ->
+    #'RSAPublicKey'{modulus = N,
+		    publicExponent = E};
 
 ssh2_pubkey_decode(<<"ssh-dss">>,
-		   <<?UINT32(Len),   _:Len/binary,
-		     ?UINT32(SizeP), P:SizeP/binary,
-		     ?UINT32(SizeQ), Q:SizeQ/binary,
-		     ?UINT32(SizeG), G:SizeG/binary,
-		     ?UINT32(SizeY), Y:SizeY/binary>>) ->
-    {erlint(SizeY, Y),
-     #'Dss-Parms'{p = erlint(SizeP, P),
-		  q = erlint(SizeQ, Q),
-		  g = erlint(SizeG, G)}};
+                   <<?DEC_INT(P, _PL),
+                     ?DEC_INT(Q, _QL),
+                     ?DEC_INT(G, _GL),
+                     ?DEC_INT(Y, _YL)>>) ->
+    {Y, #'Dss-Parms'{p = P,
+                     q = Q,
+                     g = G}};
 
 ssh2_pubkey_decode(<<"ecdsa-sha2-",Id/binary>>,
-		   <<?UINT32(Len), ECDSA_SHA2_etc:Len/binary,
-		     ?UINT32(SizeId), Id:SizeId/binary,
-		     ?UINT32(SizeQ), Q:SizeQ/binary>>) ->
-    <<"ecdsa-sha2-", Id/binary>> = ECDSA_SHA2_etc,
+                   <<?DEC_BIN(Id, _IL),
+                     ?DEC_BIN(Q, _QL)>>) ->
     {#'ECPoint'{point = Q}, {namedCurve,public_key:ssh_curvename2oid(Id)}}.
 
 
@@ -575,17 +529,16 @@ mpint(X) -> mpint_pos(X).
 
 mpint_neg(X) ->
     Bin = int_to_bin_neg(X, []),
-    Sz = byte_size(Bin),
-    <<?UINT32(Sz), Bin/binary>>.
+    <<?STRING(Bin)>>.
     
 mpint_pos(X) ->
     Bin = int_to_bin_pos(X, []),
     <<MSB,_/binary>> = Bin,
-    Sz = byte_size(Bin),
     if MSB band 16#80 == 16#80 ->
-	    <<?UINT32((Sz+1)), 0, Bin/binary>>;
+            B = << 0, Bin/binary>>,
+	    <<?STRING(B)>>;
        true ->
-	    <<?UINT32(Sz), Bin/binary>>
+	    <<?STRING(Bin)>>
     end.
 
 int_to_bin_pos(0,Ds=[_|_]) ->
@@ -602,7 +555,8 @@ int_to_bin_neg(X,Ds) ->
 string(X) when is_binary(X) ->
     << ?STRING(X) >>;
 string(X) ->
-    << ?STRING(list_to_binary(X)) >>.
+    B = list_to_binary(X),
+    << ?STRING(B) >>.
 
 is_ssh_curvename(Id) -> try public_key:ssh_curvename2oid(Id) of _ -> true
 			catch _:_  -> false
diff --git a/lib/public_key/src/public_key.erl b/lib/public_key/src/public_key.erl
index c3f2d791a3..034126655c 100644
--- a/lib/public_key/src/public_key.erl
+++ b/lib/public_key/src/public_key.erl
@@ -59,7 +59,8 @@
 	 pkix_crl_verify/2,
 	 pkix_crl_issuer/1,
 	 short_name_hash/1,
-         pkix_test_data/1
+         pkix_test_data/1,
+         pkix_test_root_cert/2
 	]).
 
 -export_type([public_key/0, private_key/0, pem_entry/0,
@@ -850,10 +851,10 @@ pkix_crls_validate(OtpCert, DPAndCRLs0, Options) ->
 
 %--------------------------------------------------------------------
 -spec pkix_verify_hostname(Cert :: #'OTPCertificate'{} | binary(),
-			   ReferenceIDs :: [{uri_id | dns_id | oid(),  string()}]) -> boolean().
+			   ReferenceIDs :: [{uri_id | dns_id | ip | srv_id | oid(),  string()}]) -> boolean().
 
 -spec pkix_verify_hostname(Cert :: #'OTPCertificate'{} | binary(),
-			   ReferenceIDs :: [{uri_id | dns_id | oid(),  string()}],
+			   ReferenceIDs :: [{uri_id | dns_id | ip | srv_id | oid(),  string()}],
 			   Options :: proplists:proplist()) -> boolean().
 
 %% Description: Validates a hostname to RFC 6125
@@ -942,7 +943,6 @@ ssh_decode(SshBin, Type) when is_binary(SshBin),
 %%--------------------------------------------------------------------
 -spec ssh_encode([{public_key(), Attributes::list()}], ssh_file()) -> binary()
 	      ; (public_key(), ssh2_pubkey) -> binary()
-	      ; ({public_key(),atom()}, ssh2_pubkey) -> binary()
 	      .
 %%
 %% Description: Encodes a list of ssh file entries (public keys and
@@ -1034,10 +1034,12 @@ short_name_hash({rdnSequence, _Attributes} = Name) ->
 
 
 %%--------------------------------------------------------------------
--spec pkix_test_data(#{chain_type() := pubkey_cert:chain_opts()}) ->
-                            pubkey_cert:test_config().
+-spec pkix_test_data(#{chain_type() := pubkey_cert:chain_opts()} |
+                     pubkey_cert:chain_opts()) ->
+                            pubkey_cert:test_config() |
+                            [pubkey_cert:conf_opt()].
 
-%% Description: Generates OpenSSL-style hash of a name.
+%% Description: Generates cert(s) and ssl configuration
 %%--------------------------------------------------------------------
 
 pkix_test_data(#{client_chain := ClientChain0,
@@ -1046,7 +1048,21 @@ pkix_test_data(#{client_chain := ClientChain0,
     ClientChain = maps:merge(Default, ClientChain0),
     ServerChain = maps:merge(Default, ServerChain0),
     pubkey_cert:gen_test_certs(#{client_chain => ClientChain,
-                                 server_chain => ServerChain}).
+                                 server_chain => ServerChain});
+pkix_test_data(#{} = Chain) ->
+    Default = #{intermediates => []},
+    pubkey_cert:gen_test_certs(maps:merge(Default, Chain)).
+
+%%--------------------------------------------------------------------
+-spec pkix_test_root_cert(
+        Name :: string(), Opts :: [pubkey_cert:cert_opt()]) ->
+                                 pubkey_cert:test_root_cert().
+
+%% Description: Generates a root cert suitable for pkix_test_data/1
+%%--------------------------------------------------------------------
+
+pkix_test_root_cert(Name, Opts) ->
+    pubkey_cert:root_cert(Name, Opts).
 
 %%--------------------------------------------------------------------
 %%% Internal functions
@@ -1324,9 +1340,9 @@ ec_normalize_params(#'ECParameters'{} = ECParams) ->
 ec_normalize_params(Other) -> Other.
 
 -spec ec_curve_spec(ecpk_parameters_api()) -> term().
-ec_curve_spec( #'ECParameters'{fieldID = FieldId, curve = PCurve, base = Base, order = Order, cofactor = CoFactor }) ->
-    Field = {pubkey_cert_records:supportedCurvesTypes(FieldId#'FieldID'.fieldType),
-	     FieldId#'FieldID'.parameters},
+ec_curve_spec( #'ECParameters'{fieldID = #'FieldID'{fieldType = Type,
+                                                    parameters = Params}, curve = PCurve, base = Base, order = Order, cofactor = CoFactor }) ->
+    Field = format_field(pubkey_cert_records:supportedCurvesTypes(Type), Params),
     Curve = {PCurve#'Curve'.a, PCurve#'Curve'.b, none},
     {Field, Curve, Base, Order, CoFactor};
 ec_curve_spec({ecParameters, ECParams}) ->
@@ -1336,6 +1352,26 @@ ec_curve_spec({namedCurve, OID}) when is_tuple(OID), is_integer(element(1,OID))
 ec_curve_spec({namedCurve, Name}) when is_atom(Name) ->
     crypto:ec_curve(Name).
 
+format_field(characteristic_two_field = Type, Params0) ->
+    #'Characteristic-two'{
+       m = M,
+       basis = BasisOid,
+       parameters = Params} = der_decode('Characteristic-two', Params0),
+    {Type, M, field_param_decode(BasisOid, Params)};
+format_field(prime_field, Params0) ->
+    Prime = der_decode('Prime-p', Params0),
+    {prime_field, Prime}.
+
+field_param_decode(?'ppBasis', Params) ->
+    #'Pentanomial'{k1 = K1, k2 = K2, k3 = K3} =
+        der_decode('Pentanomial', Params),
+    {ppbasis, K1, K2, K3};
+field_param_decode(?'tpBasis', Params) ->
+    K = der_decode('Trinomial', Params),
+    {tpbasis, K};
+field_param_decode(?'gnBasis', _) ->
+    onbasis.
+        
 -spec ec_key({PubKey::term(), PrivateKey::term()}, Params::ecpk_parameters()) -> #'ECPrivateKey'{}.
 ec_key({PubKey, PrivateKey}, Params) ->
     #'ECPrivateKey'{version = 1,
@@ -1529,6 +1565,8 @@ verify_hostname_match_loop(Refs, Pres, MatchFun, FailCB, Cert) ->
       Refs).
 
 
+to_lower_ascii({ip,_}=X) -> X;
+to_lower_ascii({iPAddress,_}=X) -> X;
 to_lower_ascii(S) when is_list(S) -> lists:map(fun to_lower_ascii/1, S);
 to_lower_ascii({T,S}) -> {T, to_lower_ascii(S)};
 to_lower_ascii(C) when $A =< C,C =< $Z -> C + ($a-$A);
diff --git a/lib/public_key/test/public_key_SUITE.erl b/lib/public_key/test/public_key_SUITE.erl
index 0077c7908c..449d1fc040 100644
--- a/lib/public_key/test/public_key_SUITE.erl
+++ b/lib/public_key/test/public_key_SUITE.erl
@@ -64,7 +64,9 @@ all() ->
 groups() -> 
     [{pem_decode_encode, [], [dsa_pem, rsa_pem, ec_pem, encrypted_pem,
 			      dh_pem, cert_pem, pkcs7_pem, pkcs10_pem, ec_pem2,
-                  ec_pem_encode_generated]},
+                              ec_pem_encode_generated,
+                              gen_ec_param_prime_field, gen_ec_param_char_2_field
+                             ]},
      {ssh_public_key_decode_encode, [],
       [ssh_rsa_public_key, ssh_dsa_public_key, ssh_ecdsa_public_key,
        ssh_rfc4716_rsa_comment, ssh_rfc4716_dsa_comment,
@@ -102,8 +104,15 @@ init_per_testcase(pkix_test_data_all_default, Config) ->
          [] ->
              {skip, missing_ecc_support};
          _ ->
-               init_common_per_testcase(Config)
+             init_common_per_testcase(Config)
      end;
+
+init_per_testcase(gen_ec_param_prime_field=TC, Config) ->
+    init_per_testcase_gen_ec_param(TC, secp521r1, Config);
+
+init_per_testcase(gen_ec_param_char_2_field=TC, Config) ->
+    init_per_testcase_gen_ec_param(TC, sect571r1, Config);
+
 init_per_testcase(TestCase, Config) ->
     case TestCase of
 	ssh_hostkey_fingerprint_md5_implicit -> init_fingerprint_testcase([md5], Config);
@@ -991,7 +1000,7 @@ pkix_verify_hostname_options(Config) ->
 %% openssl req -x509 -nodes -newkey rsa:1024 -keyout /dev/null -extensions SAN -config  public_key_SUITE_data/verify_hostname_ip.conf 2>/dev/null > public_key_SUITE_data/pkix_verify_hostname_subjAltName_IP.pem
 %%
 %% Subject: C=SE, CN=example.com
-%% Subject Alternative Name: DNS:1.2.3.4, DNS: abcd:ef::1, IP:5.6.7.8, URI:https://10.11.12.13
+%% Subject Alternative Name: DNS:1.2.3.4, DNS: abcd:ef::1, IP:10.67.16.75, URI:https://10.11.12.13
 
 pkix_verify_hostname_subjAltName_IP(Config) ->
     DataDir = proplists:get_value(data_dir, Config),
@@ -1000,7 +1009,7 @@ pkix_verify_hostname_subjAltName_IP(Config) ->
 
     %% Print the tests that a matchfun has to handle
     catch public_key:pkix_verify_hostname(Cert, [{some_tag,"some.domain"},
-                                                 {ip, {5,6,7,8}}
+                                                 {ip, {10,67,16,75}}
                                                 ],
                                           [{match_fun,
                                             fun(Ref,Pres) -> 
@@ -1012,14 +1021,14 @@ pkix_verify_hostname_subjAltName_IP(Config) ->
     true  =  public_key:pkix_verify_hostname(Cert, [{uri_id,"https://10.11.12.13"}]),
     true  =  public_key:pkix_verify_hostname(Cert, [{dns_id,"1.2.3.4"}]),
     true  =  public_key:pkix_verify_hostname(Cert, [{dns_id,<<"1.2.3.4">>}]),
-    false =  public_key:pkix_verify_hostname(Cert, [{dns_id,"5.6.7.8"}]),
+    false =  public_key:pkix_verify_hostname(Cert, [{dns_id,"10.67.16.75"}]),
     true  =  public_key:pkix_verify_hostname(Cert, [{ip, "aBcD:ef:0::0:1"}]),
     true  =  public_key:pkix_verify_hostname(Cert, [{ip, {16#abcd,16#ef,0,0,0,0,0,1}}]),
-    true  =  public_key:pkix_verify_hostname(Cert, [{ip, "5.6.7.8"}]),
-    true  =  public_key:pkix_verify_hostname(Cert, [{ip, <<"5.6.7.8">>}]),
-    true  =  public_key:pkix_verify_hostname(Cert, [{ip, {5,6,7,8}}]).
-        
-
+    true  =  public_key:pkix_verify_hostname(Cert, [{ip, "10.67.16.75"}]),
+    true  =  public_key:pkix_verify_hostname(Cert, [{ip, <<"10.67.16.75">>}]),
+    true  =  public_key:pkix_verify_hostname(Cert, [{ip, {10,67,16,75}}]),
+    false =  public_key:pkix_verify_hostname(Cert, [{ip, {1,2,3,4}}]),
+    false =  public_key:pkix_verify_hostname(Cert, [{ip, {10,11,12,13}}]).
 %%--------------------------------------------------------------------
 pkix_iso_rsa_oid() ->
  [{doc, "Test workaround for supporting certs that use ISO oids"
@@ -1205,6 +1214,19 @@ short_crl_issuer_hash(Config) when is_list(Config) ->
 
     CrlIssuerHash = public_key:short_name_hash(Issuer).
 
+%%--------------------------------------------------------------------
+gen_ec_param_prime_field() ->
+    [{doc, "Generate key with EC prime_field parameters"}].
+gen_ec_param_prime_field(Config) when is_list(Config) ->
+    Datadir = proplists:get_value(data_dir, Config),
+    do_gen_ec_param(filename:join(Datadir, "ec_key_param0.pem")).
+
+%%--------------------------------------------------------------------
+gen_ec_param_char_2_field() ->
+    [{doc, "Generate key with EC characteristic_two_field parameters"}].
+gen_ec_param_char_2_field(Config) when is_list(Config) ->
+    Datadir = proplists:get_value(data_dir, Config),
+    do_gen_ec_param(filename:join(Datadir, "ec_key_param1.pem")).
 
 %%--------------------------------------------------------------------
 %% Internal functions ------------------------------------------------
@@ -1277,6 +1299,43 @@ strip_superfluous_newlines(Bin) ->
     Str = string:strip(binary_to_list(Bin), right, 10),
     re:replace(Str,"\n\n","\n", [{return,list}, global]).
 
+do_gen_ec_param(File) ->    
+    {ok, KeyPem} = file:read_file(File),
+    Entries = public_key:pem_decode(KeyPem),
+    [ParamInfo] = [Entry || Entry={'EcpkParameters', _, not_encrypted} <- Entries],
+    {ecParameters, Params} = public_key:pem_entry_decode(ParamInfo),
+    Key = public_key:generate_key(Params),
+    case check_entry_type(Key, 'ECPrivateKey') of
+        true ->
+            ok;
+        false ->
+            ct:fail({key_gen_fail, File})
+    end.
+
+init_per_testcase_gen_ec_param(TC, Curve, Config) ->
+    case crypto:ec_curves() of
+        [] ->
+            {skip, missing_ec_support};
+        Curves ->
+            case lists:member(Curve, Curves)
+                andalso crypto_supported_curve(Curve, Curves)
+            of
+                true ->
+                    init_common_per_testcase(Config);
+                false ->
+                    {skip, {missing_ec_support, Curve}}
+            end
+    end.
+
+
+crypto_supported_curve(Curve, Curves) ->
+    try crypto:generate_key(ecdh, Curve) of
+        {error,_} -> false; % Just in case crypto is changed in the future...
+        _-> true
+    catch
+        _:_-> false
+    end.
+        
 incorrect_countryname_pkix_cert() ->
     <<48,130,5,186,48,130,4,162,160,3,2,1,2,2,7,7,250,61,63,6,140,137,48,13,6,9,42, 134,72,134,247,13,1,1,5,5,0,48,129,220,49,11,48,9,6,3,85,4,6,19,2,85,83,49, 16,48,14,6,3,85,4,8,19,7,65,114,105,122,111,110,97,49,19,48,17,6,3,85,4,7,19, 10,83,99,111,116,116,115,100,97,108,101,49,37,48,35,6,3,85,4,10,19,28,83,116, 97,114,102,105,101,108,100,32,84,101,99,104,110,111,108,111,103,105,101,115, 44,32,73,110,99,46,49,57,48,55,6,3,85,4,11,19,48,104,116,116,112,58,47,47,99, 101,114,116,105,102,105,99,97,116,101,115,46,115,116,97,114,102,105,101,108, 100,116,101,99,104,46,99,111,109,47,114,101,112,111,115,105,116,111,114,121, 49,49,48,47,6,3,85,4,3,19,40,83,116,97,114,102,105,101,108,100,32,83,101,99, 117,114,101,32,67,101,114,116,105,102,105,99,97,116,105,111,110,32,65,117, 116,104,111,114,105,116,121,49,17,48,15,6,3,85,4,5,19,8,49,48,54,56,56,52,51, 53,48,30,23,13,49,48,49,48,50,51,48,49,51,50,48,53,90,23,13,49,50,49,48,50, 51,48,49,51,50,48,53,90,48,122,49,11,48,9,6,3,85,4,6,12,2,85,83,49,11,48,9,6, 3,85,4,8,12,2,65,90,49,19,48,17,6,3,85,4,7,12,10,83,99,111,116,116,115,100, 97,108,101,49,38,48,36,6,3,85,4,10,12,29,83,112,101,99,105,97,108,32,68,111, 109,97,105,110,32,83,101,114,118,105,99,101,115,44,32,73,110,99,46,49,33,48, 31,6,3,85,4,3,12,24,42,46,108,111,103,105,110,46,115,101,99,117,114,101,115, 101,114,118,101,114,46,110,101,116,48,130,1,34,48,13,6,9,42,134,72,134,247, 13,1,1,1,5,0,3,130,1,15,0,48,130,1,10,2,130,1,1,0,185,136,240,80,141,36,124, 245,182,130,73,19,188,74,166,117,72,228,185,209,43,129,244,40,44,193,231,11, 209,12,234,88,43,142,1,162,48,122,17,95,230,105,171,131,12,147,46,204,36,80, 250,171,33,253,35,62,83,22,71,212,186,141,14,198,89,89,121,204,224,122,246, 127,110,188,229,162,67,95,6,74,231,127,99,131,7,240,85,102,203,251,50,58,58, 104,245,103,181,183,134,32,203,121,232,54,32,188,139,136,112,166,126,14,91, 223,153,172,164,14,61,38,163,208,215,186,210,136,213,143,70,147,173,109,217, 250,169,108,31,211,104,238,103,93,182,59,165,43,196,189,218,241,30,148,240, 109,90,69,176,194,52,116,173,151,135,239,10,209,179,129,192,102,75,11,25,168, 223,32,174,84,223,134,70,167,55,172,143,27,130,123,226,226,7,34,142,166,39, 48,246,96,231,150,84,220,106,133,193,55,95,159,227,24,249,64,36,1,142,171,16, 202,55,126,7,156,15,194,22,116,53,113,174,104,239,203,120,45,131,57,87,84, 163,184,27,83,57,199,91,200,34,43,98,61,180,144,76,65,170,177,2,3,1,0,1,163, 130,1,224,48,130,1,220,48,15,6,3,85,29,19,1,1,255,4,5,48,3,1,1,0,48,29,6,3, 85,29,37,4,22,48,20,6,8,43,6,1,5,5,7,3,1,6,8,43,6,1,5,5,7,3,2,48,14,6,3,85, 29,15,1,1,255,4,4,3,2,5,160,48,56,6,3,85,29,31,4,49,48,47,48,45,160,43,160, 41,134,39,104,116,116,112,58,47,47,99,114,108,46,115,116,97,114,102,105,101, 108,100,116,101,99,104,46,99,111,109,47,115,102,115,50,45,48,46,99,114,108, 48,83,6,3,85,29,32,4,76,48,74,48,72,6,11,96,134,72,1,134,253,110,1,7,23,2,48, 57,48,55,6,8,43,6,1,5,5,7,2,1,22,43,104,116,116,112,115,58,47,47,99,101,114, 116,115,46,115,116,97,114,102,105,101,108,100,116,101,99,104,46,99,111,109, 47,114,101,112,111,115,105,116,111,114,121,47,48,129,141,6,8,43,6,1,5,5,7,1, 1,4,129,128,48,126,48,42,6,8,43,6,1,5,5,7,48,1,134,30,104,116,116,112,58,47, 47,111,99,115,112,46,115,116,97,114,102,105,101,108,100,116,101,99,104,46,99, 111,109,47,48,80,6,8,43,6,1,5,5,7,48,2,134,68,104,116,116,112,58,47,47,99, 101,114,116,105,102,105,99,97,116,101,115,46,115,116,97,114,102,105,101,108, 100,116,101,99,104,46,99,111,109,47,114,101,112,111,115,105,116,111,114,121, 47,115,102,95,105,110,116,101,114,109,101,100,105,97,116,101,46,99,114,116, 48,31,6,3,85,29,35,4,24,48,22,128,20,73,75,82,39,209,27,188,242,161,33,106, 98,123,81,66,122,138,215,213,86,48,59,6,3,85,29,17,4,52,48,50,130,24,42,46, 108,111,103,105,110,46,115,101,99,117,114,101,115,101,114,118,101,114,46,110, 101,116,130,22,108,111,103,105,110,46,115,101,99,117,114,101,115,101,114,118, 101,114,46,110,101,116,48,29,6,3,85,29,14,4,22,4,20,138,233,191,208,157,203, 249,85,242,239,20,195,48,10,148,49,144,101,255,116,48,13,6,9,42,134,72,134, 247,13,1,1,5,5,0,3,130,1,1,0,82,31,121,162,49,50,143,26,167,202,143,61,71, 189,201,199,57,81,122,116,90,192,88,24,102,194,174,48,157,74,27,87,210,223, 253,93,3,91,150,109,120,1,110,27,11,200,198,141,222,246,14,200,71,105,41,138, 13,114,122,106,63,17,197,181,234,121,61,89,74,65,41,231,248,219,129,83,176, 219,55,107,55,211,112,98,38,49,69,77,96,221,108,123,152,12,210,159,157,141, 43,226,55,187,129,3,82,49,136,66,81,196,91,234,196,10,82,48,6,80,163,83,71, 127,102,177,93,209,129,26,104,2,84,24,255,248,161,3,244,169,234,92,122,110, 43,4,17,113,185,235,108,219,210,236,132,216,177,227,17,169,58,162,159,182, 162,93,160,229,200,9,163,229,110,121,240,168,232,14,91,214,188,196,109,210, 164,222,0,109,139,132,113,91,16,118,173,178,176,80,132,34,41,199,51,206,250, 224,132,60,115,192,94,107,163,219,212,226,225,65,169,148,108,213,46,174,173, 103,110,189,229,166,149,254,31,51,44,144,108,187,182,11,251,201,206,86,138, 208,59,51,86,132,235,81,225,88,34,190,8,184>>.
 
diff --git a/lib/public_key/test/public_key_SUITE_data/ec_key_param0.pem b/lib/public_key/test/public_key_SUITE_data/ec_key_param0.pem
new file mode 100644
index 0000000000..679b08f1a2
--- /dev/null
+++ b/lib/public_key/test/public_key_SUITE_data/ec_key_param0.pem
@@ -0,0 +1,28 @@
+-----BEGIN EC PARAMETERS-----
+MIIBwgIBATBNBgcqhkjOPQEBAkIB////////////////////////////////////
+//////////////////////////////////////////////////8wgZ4EQgH/////
+////////////////////////////////////////////////////////////////
+/////////////////ARBUZU+uWGOHJofkpohoLaFQO6i2nJbmbMV87i0iZGO8Qnh
+Vhk5Uex+k3sWUsC9O7G/BzVz34g9LDTx70Uf1GtQPwADFQDQnogAKRy4U5bMZxc5
+MoSqoNpkugSBhQQAxoWOBrcEBOnNnj7LZiOVtEKcZIE5BT+1Ifgor2BrTT26oUte
+d+/nWSj+HcEnov+o3jNIs8GFakKb+X5+McLlvWYBGDkpaniaO8AEXIpftCx9G9mY
+9URJV5tEaBevvRcnPmYsl+5ymV70JkDFULkBP60HYTU8cIaicsJAiL6Udp/RZlAC
+QgH///////////////////////////////////////////pRhoeDvy+Wa3/MAUj3
+CaXQO7XJuImcR667b7cekThkCQIBAQ==
+-----END EC PARAMETERS-----
+-----BEGIN EC PRIVATE KEY-----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-----END EC PRIVATE KEY-----
diff --git a/lib/public_key/test/public_key_SUITE_data/ec_key_param1.pem b/lib/public_key/test/public_key_SUITE_data/ec_key_param1.pem
new file mode 100644
index 0000000000..67095d8dc5
--- /dev/null
+++ b/lib/public_key/test/public_key_SUITE_data/ec_key_param1.pem
@@ -0,0 +1,25 @@
+-----BEGIN EC PARAMETERS-----
+MIIBcQIBATAlBgcqhkjOPQECMBoCAgI7BgkqhkjOPQECAwMwCQIBAgIBBQIBCjBk
+BAEBBEgC9A5+IiHyld4pcRe389YvXGqX/8uM7/HNa6jOSpoYrYT/q72O+lkzK+et
+Z1ambilK/RhaeP8SqlIOTec5usoMf/7/fylVcnoDFQAqoFj3Og4zq0hrD2EEEMU6
+fxMjEASBkQQDAwAdNLhWKWwWwNQNPNd1CpPR0pVfqAql9A/I23sqvb3lOVD0wNKT
+zdcRo1tn+xSZrmADhhTxOUq/o7TIUNkn4ed2nI7sLRkDe/JzQtpjm23M//63PWnX
+jGwnpgCcu8oZgPhTOSHopoRCPkO6sIpXYpGvj0YbsqizUx0vBIXBmxbi8VFuI908
+GkgnrxuKwVsCSAP//////////////////////////////////////////////+Zh
+zhj/VZhzCAWbGGgjhR7H3ZyhFh3pPVF01m6Dgum7L+hORwIBAg==
+-----END EC PARAMETERS-----
+-----BEGIN EC PRIVATE KEY-----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+-----END EC PRIVATE KEY-----
diff --git a/lib/public_key/test/public_key_SUITE_data/pkix_verify_hostname_subjAltName_IP.pem b/lib/public_key/test/public_key_SUITE_data/pkix_verify_hostname_subjAltName_IP.pem
index f9ffb257b5..97d12cdadf 100644
--- a/lib/public_key/test/public_key_SUITE_data/pkix_verify_hostname_subjAltName_IP.pem
+++ b/lib/public_key/test/public_key_SUITE_data/pkix_verify_hostname_subjAltName_IP.pem
@@ -1,13 +1,13 @@
 -----BEGIN CERTIFICATE-----
-MIIB/zCCAWigAwIBAgIJAMoSejmTjwAGMA0GCSqGSIb3DQEBCwUAMB8xCzAJBgNV
-BAYTAlNFMRAwDgYDVQQDEwc1LjYuNy44MB4XDTE3MDkyODE0MDAxNVoXDTE3MTAy
-ODE0MDAxNVowHzELMAkGA1UEBhMCU0UxEDAOBgNVBAMTBzUuNi43LjgwgZ8wDQYJ
-KoZIhvcNAQEBBQADgY0AMIGJAoGBAMUPU89KwVbTCDkyxQSz3wprMbZTLe35K6jm
-Q7oY1rJyVXjsFHwZrFqqNMScEyX40rJhczQ2Z9etEX6qYLbdb/DZeFcKo14fR583
-QMFZC+qqpLWHdvjaQN0KwD99VFeZIGpRgywG8SR+BXZjDHUkGsMrikAEJtf0Tgih
-IPyiFtiJAgMBAAGjQzBBMD8GA1UdEQQ4MDaCBzEuMi4zLjSHBAUGBwiHEKvNAO8A
-AAAAAAAAAAAAAAGGE2h0dHBzOi8vMTAuMTEuMTIuMTMwDQYJKoZIhvcNAQELBQAD
-gYEAtWVeQaRFZ0kH/pzSWMSsOCUrjbwlWRwDNbagNKoM6nCRv0QQ59fG6XrVZwR3
-c0s5arlMh3U2+bjKE+Iq9+b/lN1lGzf8iaAqBNa7KptwTSUEY3TiNG5X0zlSXKTI
-3z7AaUEtghL9ImCPj5V3tVksqWd7U0zLmeeLZnM+wGAL9Hc=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 -----END CERTIFICATE-----
diff --git a/lib/public_key/test/public_key_SUITE_data/verify_hostname_ip.conf b/lib/public_key/test/public_key_SUITE_data/verify_hostname_ip.conf
index 0a738f2586..798592e4f6 100644
--- a/lib/public_key/test/public_key_SUITE_data/verify_hostname_ip.conf
+++ b/lib/public_key/test/public_key_SUITE_data/verify_hostname_ip.conf
@@ -5,14 +5,13 @@ distinguished_name = DN
 [DN]
 C=SE
 CN=example.com
-CN=5.6.7.8
 
 [SAN]
 subjectAltName = @alt_names
 
 [alt_names]
 DNS = 1.2.3.4
-IP.1 = 5.6.7.8
+IP.1 = 10.67.16.75
 IP.2 = abcd:ef::1
 URI = https://10.11.12.13
 
diff --git a/lib/public_key/vsn.mk b/lib/public_key/vsn.mk
index bb96c2237d..99a0cc087e 100644
--- a/lib/public_key/vsn.mk
+++ b/lib/public_key/vsn.mk
@@ -1 +1 @@
-PUBLIC_KEY_VSN = 1.5
+PUBLIC_KEY_VSN = 1.5.2
diff --git a/lib/reltool/src/reltool.hrl b/lib/reltool/src/reltool.hrl
index 9c8aae6b7e..d133762818 100644
--- a/lib/reltool/src/reltool.hrl
+++ b/lib/reltool/src/reltool.hrl
@@ -220,7 +220,8 @@
         {
           name     :: rel_name(),
           vsn      :: rel_vsn(),
-          rel_apps :: [#rel_app{}]
+          rel_apps :: [#rel_app{}],
+          load_dot_erlang = true :: boolean()
 	}).
 
 -record(sys,
@@ -300,6 +301,7 @@
 
 -define(STANDALONE_INCL_SYS_FILTERS,  ["^bin/(erl|epmd)(|\\.exe|\\.ini)\$",
 				       "^bin/start(|_clean).boot\$",
+				       "^bin/no_dot_erlang\\.boot\$",
 				       "^erts.*/bin",
 				       "^lib\$"]).
 -define(STANDALONE_EXCL_SYS_FILTERS,
diff --git a/lib/reltool/src/reltool_target.erl b/lib/reltool/src/reltool_target.erl
index 676ce70aea..503e1971b9 100644
--- a/lib/reltool/src/reltool_target.erl
+++ b/lib/reltool/src/reltool_target.erl
@@ -424,7 +424,7 @@ gen_script(Rel, Sys, PathFlag, Variables) ->
             {error, Text}
     end.
 
-do_gen_script(#rel{name = RelName, vsn = RelVsn},
+do_gen_script(#rel{name = RelName, vsn = RelVsn, load_dot_erlang=LoadErlangRc},
               #sys{apps = Apps},
 	      MergedApps,
               PathFlag,
@@ -474,9 +474,11 @@ do_gen_script(#rel{name = RelName, vsn = RelVsn},
              Type =/= none,
              Type =/= load,
              not lists:member(Name, InclApps)],
-
          %% Apply user specific customizations
-         {apply, {c, erlangrc, []}},
+         case LoadErlangRc of
+             true -> {apply, {c, erlangrc, []}};
+             false -> []
+         end,
          {progress, started}
         ],
     {ok, {script, {RelName, RelVsn}, lists:flatten(DeepList)}}.
diff --git a/lib/reltool/src/reltool_utils.erl b/lib/reltool/src/reltool_utils.erl
index 1a00671f13..060a0912f9 100644
--- a/lib/reltool/src/reltool_utils.erl
+++ b/lib/reltool/src/reltool_utils.erl
@@ -154,7 +154,12 @@ default_rels() ->
 	  rel_apps = []},
      #rel{name = "start_sasl",
 	  vsn = "1.0",
-	  rel_apps = [#rel_app{name = sasl}]}
+          rel_apps = [#rel_app{name = sasl}]},
+     #rel{name = "no_dot_erlang", %% Needed by escript and erlc
+          vsn = "1.0",
+          rel_apps = [],
+          load_dot_erlang = false
+         }
     ].
 
 choose_default(Tag, Profile, InclDefs)
diff --git a/lib/reltool/test/reltool_server_SUITE.erl b/lib/reltool/test/reltool_server_SUITE.erl
index db13c56238..3622f6650c 100644
--- a/lib/reltool/test/reltool_server_SUITE.erl
+++ b/lib/reltool/test/reltool_server_SUITE.erl
@@ -247,6 +247,7 @@ get_config(_Config) ->
 		    {app,stdlib,[{incl_cond,include},{vsn,undefined},
 				 {lib_dir,StdLibDir}]},
 		    {boot_rel,"start_clean"},
+                    {rel,"no_dot_erlang","1.0",[]},
 		    {rel,"start_clean","1.0",[]},
 		    {rel,"start_sasl","1.0",[sasl]},
 		    {emu_name,"beam"},
@@ -277,6 +278,7 @@ get_config(_Config) ->
 		    {app,stdlib,[{incl_cond,include},{vsn,StdVsn},
 				 {lib_dir,StdLibDir},{mod,_,[]}|_]},
 		    {boot_rel,"start_clean"},
+                    {rel,"no_dot_erlang","1.0",[]},
 		    {rel,"start_clean","1.0",[]},
 		    {rel,"start_sasl","1.0",[sasl]},
 		    {emu_name,"beam"},
@@ -2104,6 +2106,7 @@ save_config(Config) ->
 		     {app,stdlib,[{incl_cond,include},{vsn,undefined},
 				  {lib_dir,undefined}]},
 		     {boot_rel,"start_clean"},
+                     {rel,"no_dot_erlang","1.0",[]},
 		     {rel,"start_clean","1.0",[]},
 		     {rel,"start_sasl","1.0",[sasl]},
 		     {emu_name,"beam"},
@@ -2144,6 +2147,7 @@ save_config(Config) ->
 		     {app,stdlib,[{incl_cond,include},{vsn,StdVsn},
 				  {lib_dir,StdLibDir},{mod,_,[]}|_]},
 		     {boot_rel,"start_clean"},
+                     {rel,"no_dot_erlang","1.0",[]},
 		     {rel,"start_clean","1.0",[]},
 		     {rel,"start_sasl","1.0",[sasl]},
 		     {emu_name,"beam"},
diff --git a/lib/runtime_tools/doc/src/LTTng.xml b/lib/runtime_tools/doc/src/LTTng.xml
index 392d54857c..93937b3fdc 100644
--- a/lib/runtime_tools/doc/src/LTTng.xml
+++ b/lib/runtime_tools/doc/src/LTTng.xml
@@ -134,7 +134,7 @@ $ make </code>
         <p><em>port_open</em></p>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
         </list>
         <p>
@@ -323,7 +323,7 @@ $ make </code>
 
         <p><em>driver_init</em></p>
         <list type="bulleted">
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
             <item><c>major : integer</c> :: Major version. Ex. <c>3</c></item>
             <item><c>minor : integer</c> :: Minor version. Ex. <c>1</c></item>
             <item><c>flags : integer</c> :: Flags. Ex. <c>1</c></item>
@@ -334,7 +334,7 @@ $ make </code>
         <p><em>driver_start</em></p>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
         </list>
         <p>Example:</p>
@@ -344,7 +344,7 @@ $ make </code>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
             <item><c>bytes : integer</c> :: Size of data returned. Ex. <c>82</c></item>
         </list>
         <p>Example:</p>
@@ -354,7 +354,7 @@ $ make </code>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
             <item><c>bytes : integer</c> :: Size of data returned. Ex. <c>82</c></item>
         </list>
         <p>Example:</p>
@@ -364,7 +364,7 @@ $ make </code>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
         </list>
         <p>Example:</p>
         <code type="none">driver_ready_input: { cpu_id = 5 }, { pid = "&lt;0.189.0&gt;", port = "#Port&lt;0.3637&gt;", driver = "inet_gethost 4 " }</code>
@@ -373,7 +373,7 @@ $ make </code>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
         </list>
         <p>Example:</p>
         <code type="none">driver_ready_output: { cpu_id = 5 }, { pid = "&lt;0.194.0&gt;", port = "#Port&lt;0.3663&gt;", driver = "tcp_inet" }</code>
@@ -382,14 +382,14 @@ $ make </code>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
         </list>
         <p>Example:</p>
         <code type="none">driver_timeout: { cpu_id = 5 }, { pid = "&lt;0.196.0&gt;", port = "#Port&lt;0.3664&gt;", driver = "tcp_inet" }</code>
 
         <p><em>driver_stop_select</em></p>
         <list type="bulleted">
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
         </list>
         <p>Example:</p>
         <code type="none">driver_stop_select: { cpu_id = 5 }, { driver = "unknown" }</code>
@@ -398,7 +398,7 @@ $ make </code>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
         </list>
         <p>Example:</p>
         <code type="none">driver_flush: { cpu_id = 7 }, { pid = "&lt;0.204.0&gt;", port = "#Port&lt;0.3686&gt;", driver = "tcp_inet" }</code>
@@ -407,32 +407,32 @@ $ make </code>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
         </list>
         <p>Example:</p>
-        <code type="none">driver_stop: { cpu_id = 5 }, { pid = "[]", port = "#Port&lt;0.3673&gt;", driver = "efile" }</code>
+        <code type="none">driver_stop: { cpu_id = 5 }, { pid = "[]", port = "#Port&lt;0.3673&gt;", driver = "tcp_inet" }</code>
 
         <p><em>driver_process_exit</em></p>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
         </list>
 
         <p><em>driver_ready_async</em></p>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
         </list>
         <p>Example:</p>
-        <code type="none">driver_ready_async: { cpu_id = 3 }, { pid = "&lt;0.181.0&gt;", port = "#Port&lt;0.3622&gt;", driver = "efile" }</code>
+        <code type="none">driver_ready_async: { cpu_id = 3 }, { pid = "&lt;0.181.0&gt;", port = "#Port&lt;0.3622&gt;", driver = "tcp_inet" }</code>
 
         <p><em>driver_call</em></p>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
             <item><c>command : integer</c> :: Command integer. Ex. <c>1</c></item>
             <item><c>bytes : integer</c> :: Size of data returned. Ex. <c>82</c></item>
         </list>
@@ -443,7 +443,7 @@ $ make </code>
         <list type="bulleted">
             <item><c>pid : string</c> :: Process ID. Ex. <c>"&lt;0.131.0&gt;"</c></item>
             <item><c>port : string</c> :: Port ID. Ex. <c>"#Port&lt;0.1031&gt;"</c></item>
-            <item><c>driver : string</c> :: Driver name. Ex. <c>"efile"</c></item>
+            <item><c>driver : string</c> :: Driver name. Ex. <c>"tcp_inet"</c></item>
             <item><c>command : integer</c> :: Command integer. Ex. <c>1</c></item>
             <item><c>bytes : integer</c> :: Size of data returned. Ex. <c>82</c></item>
         </list>
diff --git a/lib/runtime_tools/doc/src/Makefile b/lib/runtime_tools/doc/src/Makefile
index 5ce40bb995..ec19a4ce59 100644
--- a/lib/runtime_tools/doc/src/Makefile
+++ b/lib/runtime_tools/doc/src/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
+#
 # Copyright Ericsson AB 1999-2016. All Rights Reserved.
-# 
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 include $(ERL_TOP)/make/target.mk
@@ -44,8 +44,8 @@ XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = dbg.xml dyntrace.xml erts_alloc_config.xml system_information.xml msacc.xml
 XML_REF6_FILES = runtime_tools_app.xml
 
-XML_PART_FILES = part_notes.xml part_notes_history.xml part.xml
-XML_CHAPTER_FILES = notes.xml notes_history.xml LTTng.xml
+XML_PART_FILES = part.xml
+XML_CHAPTER_FILES = notes.xml LTTng.xml
 
 GENERATED_XML_FILES = DTRACE.xml SYSTEMTAP.xml
 
@@ -54,7 +54,8 @@ BOOK_FILES = book.xml
 XML_FILES = \
 	$(BOOK_FILES) $(XML_CHAPTER_FILES) \
 	$(XML_PART_FILES) $(XML_REF3_FILES) \
-	$(XML_REF6_FILES) $(XML_APPLICATION_FILES)
+	$(XML_REF6_FILES) $(XML_APPLICATION_FILES) \
+	$(GENERATED_XML_FILES)
 
 GIF_FILES =
 
@@ -77,10 +78,10 @@ SPECS_FILES = $(XML_REF3_FILES:%.xml=$(SPECDIR)/specs_%.xml)
 TOP_SPECS_FILE = specs.xml
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 SPECS_ESRC = ../../src
 
@@ -89,7 +90,6 @@ SPECS_FLAGS = -I../../include -I../../../kernel/src
 # ----------------------------------------------------
 # Targets
 # ----------------------------------------------------
-$(XML_FILES): $(GENERATED_XML_FILES)
 
 %.xml: $(ERL_TOP)/HOWTO/%.md $(ERL_TOP)/make/emd2exml
 	$(ERL_TOP)/make/emd2exml $< $@
@@ -109,18 +109,18 @@ man: $(MAN3_FILES) $(MAN6_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
 	rm -f $(MAN3DIR)/*
 	rm -f $(MAN6DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -136,4 +136,3 @@ release_docs_spec: docs
 	$(INSTALL_DATA) $(MAN6_FILES) "$(RELEASE_PATH)/man/man6"
 
 release_spec:
-
diff --git a/lib/runtime_tools/doc/src/fascicules.xml b/lib/runtime_tools/doc/src/fascicules.xml
deleted file mode 100644
index 1a0bd6ec97..0000000000
--- a/lib/runtime_tools/doc/src/fascicules.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="refman" href="refman_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/runtime_tools/doc/src/note.gif b/lib/runtime_tools/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/runtime_tools/doc/src/note.gif
+++ /dev/null
diff --git a/lib/runtime_tools/doc/src/notes.xml b/lib/runtime_tools/doc/src/notes.xml
index 8b4d437c26..93e3e26fda 100644
--- a/lib/runtime_tools/doc/src/notes.xml
+++ b/lib/runtime_tools/doc/src/notes.xml
@@ -32,6 +32,21 @@
   <p>This document describes the changes made to the Runtime_Tools
     application.</p>
 
+<section><title>Runtime_Tools 1.12.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Runtime_Tools 1.12.2</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/runtime_tools/doc/src/part_notes.xml b/lib/runtime_tools/doc/src/part_notes.xml
deleted file mode 100644
index cabf3e39da..0000000000
--- a/lib/runtime_tools/doc/src/part_notes.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Runtime_Tools Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p><em>Runtime_Tools</em> provides low footprint tracing/debugging
-      tools suitable for inclusion in a production system.</p>
-    <p>For information about older versions, see
-      <url href="part_notes_history_frame.html">Release Notes History</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/runtime_tools/doc/src/part_notes_history.xml b/lib/runtime_tools/doc/src/part_notes_history.xml
deleted file mode 100644
index dd1991f23a..0000000000
--- a/lib/runtime_tools/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2006</year>
-      <year>2016</year>
-      <holder>Ericsson AB, All Rights Reserved</holder>
-    </copyright>
-    <legalnotice>
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
- 
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-  The Initial Developer of the Original Code is Ericsson AB.
-    </legalnotice>
-
-    <title>Runtime_Tools Release Notes History</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p><em>Runtime_Tools</em> provides low footprint tracing/debugging
-      tools suitable for inclusion in a production system.</p>
-  </description>
-  <include file="notes_history"></include>
-</part>
-
diff --git a/lib/runtime_tools/doc/src/warning.gif b/lib/runtime_tools/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/runtime_tools/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/runtime_tools/examples/efile_drv.d b/lib/runtime_tools/examples/efile_drv.d
deleted file mode 100644
index a470518dd9..0000000000
--- a/lib/runtime_tools/examples/efile_drv.d
+++ /dev/null
@@ -1,105 +0,0 @@
-/* example usage: dtrace -q -s /path/to/efile_drv.d */
-/*
- * %CopyrightBegin%
- *
- * Copyright Scott Lystig Fritchie 2011-2016. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-
-BEGIN
-{
-    op_map[1] = "OPEN";
-    op_map[2] = "READ";
-    op_map[3] = "LSEEK";
-    op_map[4] = "WRITE";
-    op_map[5] = "FSTAT";
-    op_map[6] = "PWD";
-    op_map[7] = "READDIR";
-    op_map[8] = "CHDIR";
-    op_map[9] = "FSYNC";
-    op_map[10] = "MKDIR";
-    op_map[11] = "DELETE";
-    op_map[12] = "RENAME";
-    op_map[13] = "RMDIR";
-    op_map[14] = "TRUNCATE";
-    op_map[15] = "READ_FILE";
-    op_map[16] = "WRITE_INFO";
-    op_map[19] = "LSTAT";
-    op_map[20] = "READLINK";
-    op_map[21] = "LINK";
-    op_map[22] = "SYMLINK";
-    op_map[23] = "CLOSE";
-    op_map[24] = "PWRITEV";
-    op_map[25] = "PREADV";
-    op_map[26] = "SETOPT";
-    op_map[27] = "IPREAD";
-    op_map[28] = "ALTNAME";
-    op_map[29] = "READ_LINE";
-    op_map[30] = "FDATASYNC";
-    op_map[31] = "FADVISE";
-}
-
-erlang*:::aio_pool-add
-{
-    printf("async I/O pool port %s queue len %d\n", copyinstr(arg0), arg1);
-}
-
-erlang*:::aio_pool-get
-{
-    printf("async I/O pool port %s queue len %d\n", copyinstr(arg0), arg1);
-}
-
-erlang*:::efile_drv-entry
-{
-    printf("efile_drv enter tag={%d,%d} %s%s | %s (%d) | args: %s %s , %d %d (port %s)\n",
-	   arg0, arg1,
-           arg2 == NULL ? "" : "user tag ",
-           arg2 == NULL ? "" : copyinstr(arg2),
-           op_map[arg3], arg3,
-	   arg4 == NULL ? "" : copyinstr(arg4),
-	   arg5 == NULL ? "" : copyinstr(arg5), arg6, arg7,
-           /* NOTE: port name in args[10] is experimental */
-           (args[10] == NULL) ? 
-	       "?" : copyinstr((user_addr_t) args[10]));
-}
-
-erlang*:::efile_drv-int*
-{
-    printf("async I/O worker tag={%d,%d} | %s (%d) | %s\n",
-           arg0, arg1, op_map[arg2], arg2, probename);
-}
-
-/* efile_drv-return error case */
-erlang*:::efile_drv-return
-/arg4 == 0/
-{
-    printf("efile_drv return tag={%d,%d} %s%s | %s (%d) | errno %d\n",
-           arg0, arg1,
-           arg2 == NULL ? "" : "user tag ",
-           arg2 == NULL ? "" : copyinstr(arg2),
-           op_map[arg3], arg3,
-           arg5);
-}
-
-/* efile_drv-return success case */
-erlang*:::efile_drv-return
-/arg4 != 0/
-{
-    printf("efile_drv return tag={%d,%d} %s | %s (%d) ok\n",
-           arg0, arg1,
-           arg2 == NULL ? "" : copyinstr(arg2),
-           op_map[arg3], arg3);
-}
diff --git a/lib/runtime_tools/examples/efile_drv.systemtap b/lib/runtime_tools/examples/efile_drv.systemtap
deleted file mode 100644
index 29c3637e10..0000000000
--- a/lib/runtime_tools/examples/efile_drv.systemtap
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Scott Lystig Fritchie and Andreas Schultz, 2011-2016. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-/*
- * Note: This file assumes that you're using the non-SMP-enabled Erlang
- *       virtual machine, "beam".  The SMP-enabled VM is called "beam.smp".
- *       Note that other variations of the virtual machine also have
- *       different names, e.g. the debug build of the SMP-enabled VM
- *       is "beam.debug.smp".
- *
- *       To use a different virtual machine, replace each instance of
- *       "beam" with "beam.smp" or the VM name appropriate to your
- *       environment.
- */
-
-probe begin
-{
-    op_map[1] = "OPEN";
-    op_map[2] = "READ";
-    op_map[3] = "LSEEK";
-    op_map[4] = "WRITE";
-    op_map[5] = "FSTAT";
-    op_map[6] = "PWD";
-    op_map[7] = "READDIR";
-    op_map[8] = "CHDIR";
-    op_map[9] = "FSYNC";
-    op_map[10] = "MKDIR";
-    op_map[11] = "DELETE";
-    op_map[12] = "RENAME";
-    op_map[13] = "RMDIR";
-    op_map[14] = "TRUNCATE";
-    op_map[15] = "READ_FILE";
-    op_map[16] = "WRITE_INFO";
-    op_map[19] = "LSTAT";
-    op_map[20] = "READLINK";
-    op_map[21] = "LINK";
-    op_map[22] = "SYMLINK";
-    op_map[23] = "CLOSE";
-    op_map[24] = "PWRITEV";
-    op_map[25] = "PREADV";
-    op_map[26] = "SETOPT";
-    op_map[27] = "IPREAD";
-    op_map[28] = "ALTNAME";
-    op_map[29] = "READ_LINE";
-    op_map[30] = "FDATASYNC";
-    op_map[31] = "FADVISE";
-}
-
-probe process("beam").mark("aio_pool-add")
-{
-    printf("async I/O pool port %s queue len %d\n", user_string($arg1), $arg2);
-}
-
-probe process("beam").mark("aio_pool-get")
-{
-    printf("async I/O pool port %s queue len %d\n", user_string($arg1), $arg2);
-}
-
-probe process("beam").mark("efile_drv-entry")
-{
-    printf("efile_drv enter tag={%d,%d} %s%s | %s (%d) | args: %s %s , %d %d (port %s)\n",
-	   $arg1, $arg2,
-           $arg3 == NULL ? "" : "user tag ",
-           $arg3 == NULL ? "" : user_string($arg3),
-           op_map[$arg4], $arg4,
-	   $arg5 == NULL ? "" : user_string($arg5),
-	   $arg6 == NULL ? "" : user_string($arg6), $arg7, $arg8,
-           /* NOTE: port name in $arg[11] is experimental */
-           user_string($arg11))
-}
-
-probe process("beam").mark("efile_drv-int*")
-{
-    printf("async I/O worker tag={%d,%d} | %s (%d) | %s\n",
-           $arg1, $arg2, op_map[$arg3], $arg3, probefunc());
-}
-
-probe process("beam").mark("efile_drv-return")
-{
-    if ($arg5 == 0) {
-       /* efile_drv-return error case */
-       printf("efile_drv return tag={%d,%d} %s%s | %s (%d) | errno %d\n",
-           $arg1, $arg2,
-           $arg3 == NULL ? "" : "user tag ",
-           $arg3 == NULL ? "" : user_string($arg3),
-           op_map[$arg4], $arg4,
-           $arg6);
-    } else {
-       /* efile_drv-return success case */
-       printf("efile_drv return tag={%d,%d} %s | %s (%d) ok\n",
-           $arg1, $arg2,
-           $arg3 == NULL ? "" : user_string($arg3),
-           op_map[$arg4], $arg4);
-    }
-}
-
-global op_map;
diff --git a/lib/runtime_tools/vsn.mk b/lib/runtime_tools/vsn.mk
index d8a4ede136..872bd5db1d 100644
--- a/lib/runtime_tools/vsn.mk
+++ b/lib/runtime_tools/vsn.mk
@@ -1 +1 @@
-RUNTIME_TOOLS_VSN = 1.12.2
+RUNTIME_TOOLS_VSN = 1.12.3
diff --git a/lib/sasl/doc/src/Makefile b/lib/sasl/doc/src/Makefile
index a66b1f8bcb..baf563ca62 100644
--- a/lib/sasl/doc/src/Makefile
+++ b/lib/sasl/doc/src/Makefile
@@ -9,11 +9,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # The Initial Developer of the Original Code is Ericsson Utvecklings AB.
 # Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
 # AB. All Rights Reserved.''
-# 
+#
 #     $Id$
 #
 include $(ERL_TOP)/make/target.mk
@@ -44,17 +44,14 @@ XML_REF4_FILES = appup.xml rel.xml relup.xml script.xml
 
 XML_REF6_FILES = sasl_app.xml
 
-XML_PART_FILES = part.xml part_notes.xml part_notes_history.xml
+XML_PART_FILES = part.xml
 XML_CHAPTER_FILES = sasl_intro.xml \
 	error_logging.xml \
-	notes.xml \
-	notes_history.xml
+	notes.xml
 
 BOOK_FILES = book.xml
 
-GIF_FILES = \
-	note.gif \
-	warning.gif
+GIF_FILES =
 
 XML_FILES = \
 	$(BOOK_FILES) $(XML_CHAPTER_FILES) \
@@ -78,14 +75,14 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
 # ----------------------------------------------------
-$(HTMLDIR)/%.gif: %.gif		
+$(HTMLDIR)/%.gif: %.gif
 	$(INSTALL_DATA) $< $@
 
 docs: pdf html man
@@ -100,7 +97,7 @@ man: $(MAN3_FILES) $(MAN4_FILES) $(MAN6_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)	# We depend just to copy them to ../html
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
@@ -108,11 +105,11 @@ clean clean_docs:
 	rm -f $(MAN4DIR)/*
 	rm -f $(MAN6DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -130,4 +127,3 @@ release_docs_spec: docs
 	$(INSTALL_DATA) $(MAN6_FILES) "$(RELEASE_PATH)/man/man6"
 
 release_spec:
-
diff --git a/lib/sasl/doc/src/fascicules.xml b/lib/sasl/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/sasl/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/sasl/doc/src/note.gif b/lib/sasl/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/sasl/doc/src/note.gif
+++ /dev/null
diff --git a/lib/sasl/doc/src/notes.xml b/lib/sasl/doc/src/notes.xml
index b144122c4b..e532c3cd6f 100644
--- a/lib/sasl/doc/src/notes.xml
+++ b/lib/sasl/doc/src/notes.xml
@@ -31,6 +31,26 @@
   </header>
   <p>This document describes the changes made to the SASL application.</p>
 
+<section><title>SASL 3.1.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    The Report Browser, rb, could earlier not handle reports
+	    that were not lists, for example generated by
+	    <c>error_logger:info_report({some, tuple})</c>. This term
+	    is allowed as input to error_logger, but rb would state
+	    that "A report on bad form was encountered". This is now
+	    corrected.</p>
+          <p>
+	    Own Id: OTP-13906 Aux Id: ERL-261 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>SASL 3.1</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/sasl/doc/src/part_notes.xml b/lib/sasl/doc/src/part_notes.xml
deleted file mode 100644
index 8a32deefd9..0000000000
--- a/lib/sasl/doc/src/part_notes.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>SASL Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The System Architecture Support Libraries, <em>SASL</em>,
-      provides support for alarm and release handling etc.</p>
-    <p>For information about older versions, see
-      <url href="part_notes_history_frame.html">Release Notes History</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/sasl/doc/src/part_notes_history.xml b/lib/sasl/doc/src/part_notes_history.xml
deleted file mode 100644
index abdf09d845..0000000000
--- a/lib/sasl/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2006</year>
-      <year>2016</year>
-      <holder>Ericsson AB, All Rights Reserved</holder>
-    </copyright>
-    <legalnotice>
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
- 
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-  The Initial Developer of the Original Code is Ericsson AB.
-    </legalnotice>
-
-    <title>SASL Release Notes History</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The System Architecture Support Libraries, <em>SASL</em>,
-      provides support for alarm and release handling etc.</p>
-  </description>
-  <include file="notes_history"></include>
-</part>
-
diff --git a/lib/sasl/doc/src/warning.gif b/lib/sasl/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/sasl/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/sasl/src/format_lib_supp.erl b/lib/sasl/src/format_lib_supp.erl
index cfe2ec7668..2d37dfe117 100644
--- a/lib/sasl/src/format_lib_supp.erl
+++ b/lib/sasl/src/format_lib_supp.erl
@@ -86,8 +86,10 @@ print_data(Device, Line, [{Key, Value}|T]) ->
 print_data(Device, Line, [Value|T]) ->
     Modifier = misc_supp:modifier(Device),
     io:format(Device, "~"++Modifier++"p~n", [Value]),
-    print_data(Device, Line, T).
-
+    print_data(Device, Line, T);
+print_data(Device, _Line, Value) ->
+    Modifier = misc_supp:modifier(Device),
+    io:format(Device, "~"++Modifier++"p~n", [Value]).
 
 print_items(Device, Line, {Name, Items}) ->
     print_items(Device, Line, Name, Items).
diff --git a/lib/sasl/src/systools_make.erl b/lib/sasl/src/systools_make.erl
index 391b1fb5cc..9d960b7361 100644
--- a/lib/sasl/src/systools_make.erl
+++ b/lib/sasl/src/systools_make.erl
@@ -1501,7 +1501,7 @@ preloaded() ->
     [erl_prim_loader,erl_tracer,erlang,
      erts_code_purger,erts_dirty_process_code_checker,
      erts_internal,erts_literal_area_collector,
-     init,otp_ring0,prim_eval,prim_file,
+     init,otp_ring0,prim_buffer,prim_eval,prim_file,
      prim_inet,prim_zip,zlib].
 
 %%______________________________________________________________________
diff --git a/lib/sasl/test/rb_SUITE.erl b/lib/sasl/test/rb_SUITE.erl
index 426dedbab5..4ba2540545 100644
--- a/lib/sasl/test/rb_SUITE.erl
+++ b/lib/sasl/test/rb_SUITE.erl
@@ -36,6 +36,7 @@ no_group_cases() ->
 
 groups() ->
     [{running_error_logger,[shuffle],[show,
+                                      show_other,
 				      list,
 				      rescan,
 				      start_stop_log,
@@ -165,6 +166,23 @@ show(Config) ->
 
     ok.
 
+show_other(Config) ->
+    PrivDir = ?config(priv_dir,Config),
+    OutFile = filename:join(PrivDir,"rb_SUITE_log.txt"),
+
+    %% Insert some reports in the error log and start rb
+    error_logger:info_report([rb_test_term_in_list]),
+    error_logger:info_report(rb_test_term_no_list),
+    ok = start_rb(OutFile),
+
+    %% Show by type and check content
+    [{_,I1},{_,I2}] = check_report(fun() -> rb:show(info_report) end,OutFile),
+
+    true = contains(I1,"rb_test_term_no_list"),
+    true = contains(I2,"rb_test_term_in_list"),
+
+    ok.
+
 list(Config) ->
     PrivDir = ?config(priv_dir,Config),
     OutFile = filename:join(PrivDir,"rb_SUITE_log.txt"),
diff --git a/lib/sasl/test/release_handler_SUITE.erl b/lib/sasl/test/release_handler_SUITE.erl
index 50932e89e4..4935782cf2 100644
--- a/lib/sasl/test/release_handler_SUITE.erl
+++ b/lib/sasl/test/release_handler_SUITE.erl
@@ -1384,9 +1384,9 @@ upgrade_supervisor(Conf) when is_list(Conf) ->
     %% Check that the restart strategy and child spec is updated
     {status, _, {module, _}, [_, _, _, _, [_,_,{data,[{"State",State}]}|_]]} =
 	rpc:call(Node,sys,get_status,[a_sup]),
-    {state,_,RestartStrategy,[Child],_,_,_,_,_,_,_} = State,
+    {state,_,RestartStrategy,{[a],Db},_,_,_,_,_,_,_} = State,
     one_for_all = RestartStrategy, % changed from one_for_one
-    {child,_,_,_,_,brutal_kill,_,_} = Child, % changed from timeout 2000
+    {child,_,_,_,_,brutal_kill,_,_} = maps:get(a,Db), % changed from timeout 2000
 
     ok.
 
@@ -1835,24 +1835,32 @@ otp_10463_upgrade_script_regexp(cleanup,Config) ->
     code:del_path(filename:join([DataDir,regexp_appup,app1,ebin])),
     ok.
 
-no_dot_erlang(Conf) ->
-    PrivDir = ?config(data_dir,Conf),
-    {ok, OrigWd} = file:get_cwd(),
-    try
-	ok = file:set_cwd(PrivDir),
-
-	{ok, Wd} = file:get_cwd(),
-	io:format("Dir ~ts~n", [Wd]),
+no_dot_erlang(_Conf) ->
+    case init:get_argument(home) of
+        {ok,[[Home]]} when is_list(Home) ->
+            no_dot_erlang_1(Home);
+        _ -> ok
+    end.
 
+no_dot_erlang_1(Home) ->
+    DotErlang = filename:join(Home, ".erlang"),
+    BupErlang = filename:join(Home, ".erlang_testbup"),
+    try
+        {ok, Wd} = file:get_cwd(),
+        case filelib:is_file(DotErlang) of
+            true -> {ok, _} = file:copy(DotErlang, BupErlang);
+            false -> ok
+        end,
 	Erl0 =  filename:join([code:root_dir(),"bin","erl"]),
 	Erl = filename:nativename(Erl0),
 	Quote = "\"",
 	Args = " -noinput -run c pwd -run erlang halt",
-	ok = file:write_file(".erlang", <<"io:put_chars(\"DOT_ERLANG_READ\\n\").\n">>),
+	ok = file:write_file(DotErlang, <<"io:put_chars(\"DOT_ERLANG_READ\\n\").\n">>),
 
 	CMD1 = Quote ++ Erl ++ Quote ++ Args ,
 	case os:cmd(CMD1) of
-	    "DOT_ERLANG_READ" ++ _ -> ok;
+	    "DOT_ERLANG_READ" ++ _ ->
+                io:format("~p: Success~n", [?LINE]);
 	    Other1 ->
 		io:format("Failed: ~ts~n",[CMD1]),
 		io:format("Expected: ~s ++ _~n",["DOT_ERLANG_READ "]),
@@ -1862,7 +1870,7 @@ no_dot_erlang(Conf) ->
 	NO_DOT_ERL = " -boot no_dot_erlang",
 	CMD2 = Quote ++ Erl ++ Quote ++ NO_DOT_ERL ++ Args,
 	case lists:prefix(Wd, Other2 = os:cmd(CMD2)) of
-	    true -> ok;
+	    true -> io:format("~p: Success~n", [?LINE]);
 	    false ->
 		io:format("Failed: ~ts~n",[CMD2]),
 		io:format("Expected: ~s~n",["TESTOK"]),
@@ -1870,9 +1878,13 @@ no_dot_erlang(Conf) ->
 		exit({failed_to_start, no_dot_erlang})
 	end
     after
-	_ = file:delete(".erlang"),
-	ok = file:set_cwd(OrigWd),
-	ok
+        case filelib:is_file(BupErlang) of
+            true ->
+                {ok, _} = file:copy(BupErlang, DotErlang),
+                _ = file:delete(BupErlang);
+            false ->
+                _ = file:delete(DotErlang)
+        end
     end.
 
 %%%-----------------------------------------------------------------
diff --git a/lib/sasl/vsn.mk b/lib/sasl/vsn.mk
index e980a42688..2488197ec5 100644
--- a/lib/sasl/vsn.mk
+++ b/lib/sasl/vsn.mk
@@ -1 +1 @@
-SASL_VSN = 3.1
+SASL_VSN = 3.1.1
diff --git a/lib/snmp/doc/src/Makefile b/lib/snmp/doc/src/Makefile
index 9ea5dba0c5..3ebee792f9 100644
--- a/lib/snmp/doc/src/Makefile
+++ b/lib/snmp/doc/src/Makefile
@@ -1,9 +1,9 @@
 #-*-makefile-*-   ; force emacs to enter makefile-mode
 
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 1997-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -15,7 +15,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 
 include $(ERL_TOP)/make/target.mk
@@ -66,7 +66,6 @@ HTML_REF6_FILES = $(XML_REF6_FILES:%.xml=$(HTMLDIR)/%.html)
 HTML_CHAP_FILES = $(XML_CHAPTER_FILES:%.xml=$(HTMLDIR)/%.html)
 
 EXTRA_FILES = \
-        summary.html.src \
         $(DEFAULT_HTML_FILES)  \
         $(HTML_REF1_FILES)     \
         $(HTML_REF3_FILES)     \
@@ -85,18 +84,14 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
-INDEX_FILE   = index.html
-INDEX_SRC    = $(INDEX_FILE).src
-INDEX_TARGET = $(DOCDIR)/$(INDEX_FILE)
-
 GIF_TARGETS = $(GIF_FILES:%=$(HTMLDIR)/%)
 
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -106,21 +101,17 @@ $(HTMLDIR)/%.gif: %.gif			# Copy them to ../html
 
 docs: pdf html man
 
-ldocs: local_docs $(INDEX_TARGET)
+ldocs: local_docs
 
 $(TOP_PDF_FILE): $(XML_FILES)
 
 pdf: $(TOP_PDF_FILE)
 
 html: gifs $(HTML_REF_MAN_FILE)
-html2: html $(INDEX_TARGET)
 
 clean clean_docs: clean_html clean_man clean_pdf
 	rm -f errs core *~
 
-$(INDEX_TARGET): $(INDEX_SRC) ../../vsn.mk	# Create top make file 
-	$(vsn_verbose)sed -e 's;%VSN%;$(VSN);' $< > $@	# inserting version number
-
 man: man1 man3 man6 man7
 
 man1: $(MAN1_FILES)
@@ -133,7 +124,7 @@ man7: $(MAN7_FILES)
 
 gifs: $(GIF_TARGETS)
 
-debug opt: 
+debug opt:
 
 clean_pdf:
 	@echo "cleaning pdf:"
@@ -149,7 +140,6 @@ clean_man:
 clean_html:
 	@echo "cleaning html:"
 	rm -rf $(HTMLDIR)/*
-	rm -f $(INDEX_TARGET)
 
 $(MAN7DIR)/%.7: $(MIBSDIR)/%.mib
 	@echo "processing $*"
@@ -162,7 +152,7 @@ $(MAN7DIR)/%.7: $(MIBSDIR)/%.mib
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 
 $(MAN1DIR)/snmpc.1: snmpc_cmd.xml
 	date=`date +"%B %e %Y"`; \
@@ -194,7 +184,7 @@ info: info_xml info_man info_html
 	@echo "MAN6DIR: $(MAN6DIR)"
 	@echo "MAN7DIR: $(MAN7DIR)"
 
-info_man: 
+info_man:
 	@echo "man files:"
 	@echo "MAN1_FILES = $(MAN1_FILES)"
 	@echo "MAN3_FILES = $(MAN3_FILES)"
@@ -203,7 +193,7 @@ info_man:
 	@echo ""
 	@echo "MIB_FILES  = $(MIB_FILES)"
 
-info_xml: 
+info_xml:
 	@echo "xml files:"
 #	@echo "XML_REF1_FILES        = $(XML_REF1_FILES)"
 	@echo "XML_REF3_FILES        = $(XML_REF3_FILES)"
@@ -221,9 +211,7 @@ info_xml:
 info_html:
 	@echo "html files:"
 	@echo "DOCDIR = $(DOCDIR)"
-	@echo "INDEX_FILE = $(INDEX_FILE)"
-	@echo "INDEX_SRC = $(INDEX_SRC)"
-	@echo "INDEX_TARGET = $(INDEX_TARGET)"
+	@echo "HTML_REF_MAN_FILE = $(HTML_REF_MAN_FILE)"
 	@echo ""
 	@echo "HTMLDIR = $(HTMLDIR)"
 	@echo "HTML_APP_FILES  = $(HTML_APP_FILES)"
diff --git a/lib/snmp/doc/src/book.gif b/lib/snmp/doc/src/book.gif
deleted file mode 100644
index 94b3868792..0000000000
--- a/lib/snmp/doc/src/book.gif
+++ /dev/null
diff --git a/lib/snmp/doc/src/fascicules.xml b/lib/snmp/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/snmp/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/snmp/doc/src/files.mk b/lib/snmp/doc/src/files.mk
index 5aeae19105..f364cb6fa5 100644
--- a/lib/snmp/doc/src/files.mk
+++ b/lib/snmp/doc/src/files.mk
@@ -1,9 +1,9 @@
 #-*-makefile-*-   ; force emacs to enter makefile-mode
 
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 2001-2016. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 2001-2017. All Rights Reserved.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -15,7 +15,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 
 XML_APPLICATION_FILES = \
@@ -81,9 +81,7 @@ XML_REF3_FILES = \
 XML_REF6_FILES = snmp_app.xml
 
 XML_PART_FILES =  \
-	part.xml \
-	part_notes.xml \
-	part_notes_history.xml
+	part.xml
 
 XML_CHAPTER_FILES = \
 	snmp_intro.xml \
@@ -115,23 +113,16 @@ XML_FILES = $(BOOK_FILES)        \
             $(XML_REF6_FILES)    \
             $(XML_APPLICATION_FILES)
 
-GIF_FILES = book.gif \
+GIF_FILES = \
 	getnext1.gif \
 	getnext2.gif \
 	getnext3.gif \
 	getnext4.gif \
 	snmp_agent_netif_1.gif \
 	snmp_manager_netif_1.gif \
-	min_head.gif \
-	note.gif \
-	notes.gif \
-	ref_man.gif \
 	snmp-um-1-image-1.gif \
 	snmp-um-1-image-2.gif \
 	snmp-um-1-image-3.gif \
-	snmp.gif \
-	user_guide.gif \
-	warning.gif \
 	MIB_mechanism.gif
 
 PS_FILES = getnext1.ps \
diff --git a/lib/snmp/doc/src/index.html.src b/lib/snmp/doc/src/index.html.src
deleted file mode 100644
index e1b6be4d1f..0000000000
--- a/lib/snmp/doc/src/index.html.src
+++ /dev/null
@@ -1,99 +0,0 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<!-- This file is obsolete -->
-<HTML>
-<!-- 
- ``Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
-     http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
- 
- The Initial Developer of the Original Code is Ericsson Utvecklings AB.
- Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
- AB. All Rights Reserved.''
- 
-     $Id$
--->
-<HEAD>
-<TITLE>SNMP %VSN%</TITLE>
-</HEAD>
-
-<BODY BGCOLOR="#FFFFFF">
-
-<CENTER>
-<A HREF="http://www.erlang.se/"><IMG  ALT="Erlang/OTP" BORDER=0 SRC="html/min_head.gif"></A><BR>
-
-<FONT SIZE="-1">
-[<A HREF="../../../doc/index.html">Up</A> |
-<A HREF="http://www.erlang.se/">Erlang/OTP</A>]
-</FONT><BR>
-
-<P><FONT SIZE="+3">
-SNMP
-</FONT><BR>  
-Version %VSN%
-</CENTER>
-
-<P><TABLE>
-<TR>
-<TD>
-<IMG ALIGN=LEFT ALT="SNMP" SRC="html/snmp.gif">
-</TD>
-
-<TD>
-<P>A bilingual Simple Network Management Protocol application,
- featuring an Extensible Agent, a simple manager, a MIB compiler 
- and facilities for implementing SNMP MIBs etc.
-</TD>
-</TR>
-</TABLE>
-
-<P><CENTER>
-<TABLE CELLPADDING=15>
-<TR>
-<TD ALIGN=CENTER>
-<A HREF="html/users_guide.html"><IMG ALT="User's Guide" BORDER=0 SRC="html/user_guide.gif"></A><BR>
-<FONT SIZE="-1">
-<A HREF="html/users_guide.html">User's Guide</A>
-</FONT>
-</TD>
-
-<TD ALIGN=CENTER>
-<A HREF="html/index.html"><IMG ALT="Reference Manual" BORDER=0 SRC="html/ref_man.gif"></A><BR>
-<FONT SIZE="-1">
-<A HREF="html/index.html">Reference Manual</A>
-</FONT>
-</TD>
-
-<TD ALIGN=CENTER>
-<A HREF="html/release_notes.html"><IMG ALT="Release Notes" BORDER=0 SRC="html/notes.gif"></A><BR>
-<FONT SIZE="-1">
-<A HREF="html/release_notes.html">Release Notes</A>
-</FONT>
-</TD>
-
-<TD ALIGN=CENTER>
-<A HREF="pdf/snmp-%VSN%.pdf"><IMG ALT="Off-Print" BORDER=0 SRC="html/book.gif"></A><BR>
-<FONT SIZE="-1">
-<A HREF="pdf/snmp-%VSN%.pdf">Off-Print</A>
-</FONT>
-</TD>
-</TR>
-</TABLE>
-</CENTER>
-
-<P><CENTER>
-<HR>
-<FONT SIZE="-1">
-Copyright &copy; 1991-2001
-<A HREF="http://www.erlang.se/">Ericsson Utvecklings AB</A>
-</FONT>
-</CENTER>
-</BODY>
-</HTML>
diff --git a/lib/snmp/doc/src/min_head.gif b/lib/snmp/doc/src/min_head.gif
deleted file mode 100644
index 67948a6378..0000000000
--- a/lib/snmp/doc/src/min_head.gif
+++ /dev/null
diff --git a/lib/snmp/doc/src/note.gif b/lib/snmp/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/snmp/doc/src/note.gif
+++ /dev/null
diff --git a/lib/snmp/doc/src/notes.gif b/lib/snmp/doc/src/notes.gif
deleted file mode 100644
index e000cca26a..0000000000
--- a/lib/snmp/doc/src/notes.gif
+++ /dev/null
diff --git a/lib/snmp/doc/src/notes.xml b/lib/snmp/doc/src/notes.xml
index e8527ded93..1b5f94ed07 100644
--- a/lib/snmp/doc/src/notes.xml
+++ b/lib/snmp/doc/src/notes.xml
@@ -11,7 +11,7 @@
       Licensed under the Apache License, Version 2.0 (the "License");
       you may not use this file except in compliance with the License.
       You may obtain a copy of the License at
- 
+
           http://www.apache.org/licenses/LICENSE-2.0
 
       Unless required by applicable law or agreed to in writing, software
@@ -19,7 +19,7 @@
       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
       See the License for the specific language governing permissions and
       limitations under the License.
-    
+
     </legalnotice>
 
     <title>SNMP Release Notes</title>
@@ -34,7 +34,38 @@
   </header>
 
 
-  <section><title>SNMP 5.2.7</title>
+  <section><title>SNMP 5.2.9</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>SNMP 5.2.8</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    The <c>recbuf</c> configuration option was not propagated
+	    correctly to the socket for the SNMP Manager.</p>
+          <p>
+	    Own Id: OTP-13372 Aux Id: ERIERL-73 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>SNMP 5.2.7</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
@@ -237,8 +268,8 @@
       <list type="bulleted">
         <item>
           <p>[compiler] Refinement of type Opaque was not allowed. </p>
-          <p>MIB constructs such as '<c>SYNTAX Opaque (SIZE(0..65535))</c>' 
-	  was previously not allowed, 
+          <p>MIB constructs such as '<c>SYNTAX Opaque (SIZE(0..65535))</c>'
+	  was previously not allowed,
 	  see the standard <c>ALARM-MIB</c> for eaxmple. </p>
           <p>Own Id: OTP-12066</p>
           <p>Aux Id: Seq 12669</p>
@@ -255,8 +286,8 @@
 <!--
       <list type="bulleted">
         <item>
-          <p>[agent] 
-	  see <seealso marker="snmpa#load_mibs">load_mibs</seealso> and 
+          <p>[agent]
+	  see <seealso marker="snmpa#load_mibs">load_mibs</seealso> and
 	  <seealso marker="snmpa#unload_mibs">unload_mibs</seealso>. </p>
           <p>Own Id: OTP-11216</p>
         </item>
@@ -387,18 +418,18 @@
 <!--
       <list type="bulleted">
         <item>
-          <p>Wrong block cypher type used for AES ('aes_cbf128' 
-	  instead of 'aes_cfb128') when performing AES block 
-	  encrypt/decrypt which breaks SNMP usmAesCfb128Protocol 
+          <p>Wrong block cypher type used for AES ('aes_cbf128'
+	  instead of 'aes_cfb128') when performing AES block
+	  encrypt/decrypt which breaks SNMP usmAesCfb128Protocol
 	  in agent and manager. </p>
           <p>Own Id: OTP-11412</p>
         </item>
 
         <item>
-          <p>[manager] When performing the AES encryption, invalid values for 
+          <p>[manager] When performing the AES encryption, invalid values for
 	  the EngineBoots and EngineTime was used. </p>
-	  <p>The values of the local agent was used, which would have produced 
-	  "some" values if an agent was actually running. 
+	  <p>The values of the local agent was used, which would have produced
+	  "some" values if an agent was actually running.
 	  If not it would have caused a crash. </p>
 	  <p>Own Id: OTP-11413</p>
         </item>
@@ -442,16 +473,16 @@
       <list type="bulleted">
         <item>
           <p>[agent] Enable SNMP to create missing database directories. </p>
-	  <p>Add 
+	  <p>Add
 	  <seealso marker="snmp_app#db_init_error">
-	  {db_init_error, create_db_and_dir}</seealso> option to SNMP 
-	  <seealso marker="snmp_app#manager_opts_and_types">manager</seealso> 
+	  {db_init_error, create_db_and_dir}</seealso> option to SNMP
+	  <seealso marker="snmp_app#manager_opts_and_types">manager</seealso>
 	  and
-	  <seealso marker="snmp_app#agent_opts_and_types">agent</seealso>. 
+	  <seealso marker="snmp_app#agent_opts_and_types">agent</seealso>.
 	  This allows them to create any missing parent directories for
-	  <c>db_dir</c>, rather than treating any missing directories 
+	  <c>db_dir</c>, rather than treating any missing directories
 	  as a fatal error.
-	  The default for <c>db_init_error</c>, which is <c>terminate</c>, 
+	  The default for <c>db_init_error</c>, which is <c>terminate</c>,
 	  is unchanged. </p>
 	  <p>Steve Vinoski</p>
           <p>Own Id: OTP-11352</p>
@@ -461,7 +492,7 @@
           <p>[manager] Improved handling of unexpected return values from
 	  <seealso marker="snmpm_user">snmpm_user</seealso>
 	  callback functions. </p>
-	  <p>Violations of the documented API (crashes or invalid return 
+	  <p>Violations of the documented API (crashes or invalid return
 	  values) will now result in an error message. </p>
           <p>Own Id: OTP-11307</p>
         </item>
@@ -469,16 +500,16 @@
         <item>
           <p>Add (atl) log conversion block option. </p>
 	  <p>It is now possible to request that the Audit Trail Log should
-	  be blocked during conversion (<c>log_to_txt</c> or <c>log_to_io</c>). 
-	  This could be usefull when coverting an entire large log (when 
+	  be blocked during conversion (<c>log_to_txt</c> or <c>log_to_io</c>).
+	  This could be usefull when coverting an entire large log (when
 	  there is a chance it may otherwise wrap during conversion). </p>
-	  <p>See 
-	  agent 
+	  <p>See
+	  agent
 	  <seealso marker="snmpa#log_to_txt">log_to_txt</seealso> and
-	  <seealso marker="snmpa#log_to_io">log_to_io</seealso> and also 
-	  manager 
+	  <seealso marker="snmpa#log_to_io">log_to_io</seealso> and also
+	  manager
 	  <seealso marker="snmpm#log_to_txt">log_to_txt</seealso> and
-	  <seealso marker="snmpm#log_to_io">log_to_io</seealso> 
+	  <seealso marker="snmpm#log_to_io">log_to_io</seealso>
 	  for details. </p>
           <p>Own Id: OTP-11396</p>
           <p>Own Id: seq12433</p>
@@ -487,9 +518,9 @@
         <item>
           <p>When converting an Audit Trail Log to text, a corrupt
 	  log entry could cause the entire conversion to fail. </p>
-	  <p>Also, for a log with sequence numbers, failing to 
+	  <p>Also, for a log with sequence numbers, failing to
 	  decode a log entry would cause the conversion to fail
-	  (not because of the failed decode, but because of the 
+	  (not because of the failed decode, but because of the
 	  failure to write the error message). </p>
           <p>Own Id: OTP-111453</p>
           <p>Aux Id: Seq 12459</p>
@@ -507,18 +538,18 @@
 
       <list type="bulleted">
         <item>
-          <p>Wrong block cypher type used for AES ('aes_cbf128' 
-	  instead of 'aes_cfb128') when performing AES block 
-	  encrypt/decrypt which breaks SNMP usmAesCfb128Protocol 
+          <p>Wrong block cypher type used for AES ('aes_cbf128'
+	  instead of 'aes_cfb128') when performing AES block
+	  encrypt/decrypt which breaks SNMP usmAesCfb128Protocol
 	  in agent and manager. </p>
           <p>Own Id: OTP-11412</p>
         </item>
 
         <item>
-          <p>[manager] When performing the AES encryption, invalid values for 
+          <p>[manager] When performing the AES encryption, invalid values for
 	  the EngineBoots and EngineTime was used. </p>
-	  <p>The values of the local agent was used, which would have produced 
-	  "some" values if an agent was actually running. 
+	  <p>The values of the local agent was used, which would have produced
+	  "some" values if an agent was actually running.
 	  If not it would have caused a crash. </p>
 	  <p>Own Id: OTP-11413</p>
         </item>
@@ -560,14 +591,14 @@
 
       <list type="bulleted">
         <item>
-          <p>[agent] Improved documentation for the functions for 
-	  loading and unloading mibs, 
-	  see <seealso marker="snmpa#load_mibs">load_mibs</seealso> and 
-	  <seealso marker="snmpa#unload_mibs">unload_mibs</seealso> for 
+          <p>[agent] Improved documentation for the functions for
+	  loading and unloading mibs,
+	  see <seealso marker="snmpa#load_mibs">load_mibs</seealso> and
+	  <seealso marker="snmpa#unload_mibs">unload_mibs</seealso> for
 	  more info. </p>
-          <p>Also added new functions for loading and unloading a single mib, 
-	  see <seealso marker="snmpa#load_mib">load_mib</seealso> and 
-	  <seealso marker="snmpa#unload_mib">unload_mib</seealso> for 
+          <p>Also added new functions for loading and unloading a single mib,
+	  see <seealso marker="snmpa#load_mib">load_mib</seealso> and
+	  <seealso marker="snmpa#unload_mib">unload_mib</seealso> for
 	  more info. </p>
           <p>Own Id: OTP-11216</p>
         </item>
@@ -583,8 +614,8 @@
 <!--
       <list type="bulleted">
         <item>
-          <p>[agent] 
-	  see <seealso marker="snmpa#load_mibs">load_mibs</seealso> and 
+          <p>[agent]
+	  see <seealso marker="snmpa#load_mibs">load_mibs</seealso> and
 	  <seealso marker="snmpa#unload_mibs">unload_mibs</seealso>. </p>
           <p>Own Id: OTP-11216</p>
         </item>
@@ -610,7 +641,7 @@
       </list>
 -->
     </section>
-    
+
   </section> <!-- 4.24.2 -->
 
 
@@ -643,29 +674,29 @@
 
       <list type="bulleted">
         <item>
-          <p>[agent] Reading the value of the vacmViewTreeFamilyMask returns 
+          <p>[agent] Reading the value of the vacmViewTreeFamilyMask returns
 	  it in the wrong (internal bitlist) format. </p>
 	  <p>The vacmViewTreeFamilyMask is defined as a bit string in the MIB
-	  (OCTET STRING). Internally a bitlist (list of 1's and 0's, 
+	  (OCTET STRING). Internally a bitlist (list of 1's and 0's,
 	  see <seealso marker="snmp_agent_config_files#vacm">vacm config file</seealso>
-	  for more info) is used. 
+	  for more info) is used.
 	  However, the MIB implementation assumed the latter, effectively
 	  rendering all attempts to read/set masks via SNMP unsuccessful. </p>
-	  <p>Since the mask is used in hot paths (e.g. access permission checks 
-	  for each SNMP operation, the bitlist representation of the mask has 
-	  benefits (e.g. faster processing). Reading/writing the view mask 
-	  objects is less time-critical. Therefore, to fix the issue, convert 
-	  between the bitlist (internal) representation and bitstring 
+	  <p>Since the mask is used in hot paths (e.g. access permission checks
+	  for each SNMP operation, the bitlist representation of the mask has
+	  benefits (e.g. faster processing). Reading/writing the view mask
+	  objects is less time-critical. Therefore, to fix the issue, convert
+	  between the bitlist (internal) representation and bitstring
 	  (external) when the vacmViewTreeFamilyMask objects are accessed. </p>
-	  <p>Also, the check of the vacm config file was invalid with 
-	  regard to the mask value. It was assumed to be a proper oid, which 
+	  <p>Also, the check of the vacm config file was invalid with
+	  regard to the mask value. It was assumed to be a proper oid, which
 	  is not strictly the case (see bitlist above). </p>
           <p>Own Id: OTP-11177</p>
 	  <p>Stefan Zegenhagen</p>
         </item>
 
         <item>
-          <p>[agent] The counter increment function in the local-db was  
+          <p>[agent] The counter increment function in the local-db was
 	  incorrect. It did not handle counter wrap correctly. </p>
           <p>Own Id: OTP-11192</p>
         </item>
@@ -712,26 +743,26 @@
         </item>
 
         <item>
-          <p>[agent] Introduced a documented behaviour for the mib-server 
-	  <seealso marker="snmpa_mib_data">mib-data backend</seealso>. 
+          <p>[agent] Introduced a documented behaviour for the mib-server
+	  <seealso marker="snmpa_mib_data">mib-data backend</seealso>.
 	  At present only the default module (<c>snmpa_mib_data_tttn</c>) is
 	  provided. </p>
-	  <p>A config option for the (agent) 
-	  <seealso marker="snmp_config#agent_mib_server">mib-servers</seealso> 
-	  mib-data backend module has been added to the agent config options, 
+	  <p>A config option for the (agent)
+	  <seealso marker="snmp_config#agent_mib_server">mib-servers</seealso>
+	  mib-data backend module has been added to the agent config options,
 	  <seealso marker="snmp_config#agent_ms_data_module">data_module</seealso>. </p>
 	  <p>Own Id: OTP-11101</p>
         </item>
 
         <item>
-          <p>[agent] Introduced a documented behaviour for the 
-	  <seealso marker="snmpa_mib_storage">mib storage</seealso>. 
-	  At present there are three simple modules 
-	  (<c>snmpa_mib_storage_ets</c>, <c>snmpa_mib_storage_dets</c> and 
+          <p>[agent] Introduced a documented behaviour for the
+	  <seealso marker="snmpa_mib_storage">mib storage</seealso>.
+	  At present there are three simple modules
+	  (<c>snmpa_mib_storage_ets</c>, <c>snmpa_mib_storage_dets</c> and
 	  <c>snmpa_mib_storage_mnesia</c>) implementing this behaviour,
 	  provided with the app. </p>
-	  <p>A config option for the (agent) 
-	  <seealso marker="snmp_config#agent_mib_storage">mib storage</seealso> 
+	  <p>A config option for the (agent)
+	  <seealso marker="snmp_config#agent_mib_storage">mib storage</seealso>
 	  has been added to the agent config options. </p>
 	  <p>Own Id: OTP-11107</p>
         </item>
@@ -789,14 +820,14 @@
       <list type="bulleted">
         <item>
           <p>[agent] Errors in <c>vacmAccessTable</c> RowStatus handling.
-	  There are problems with the handling of vacmAccessTableStatus 
+	  There are problems with the handling of vacmAccessTableStatus
 	  that cause some SNMP test suites to report errors.
-	  Most notably, erroneous set operations frequently cause "genErr" 
-	  errors to be returned. These "genErr" errors are usually caused 
-	  by badmatch exceptions coming from 
-	  <c>{ok, Row} = snmpa_vacm:get_row(RowIndex)</c> 
+	  Most notably, erroneous set operations frequently cause "genErr"
+	  errors to be returned. These "genErr" errors are usually caused
+	  by badmatch exceptions coming from
+	  <c>{ok, Row} = snmpa_vacm:get_row(RowIndex)</c>
 	  if the row does not exist. </p>
-	  <p>The semantics of the RowStatus handling in that table has 
+	  <p>The semantics of the RowStatus handling in that table has
 	  been adjusted to be compliant with the RowStatus
 	  textual description of SNPMv2-TC MIB. </p>
 	  <p>Stefan Zegenhagen</p>
@@ -820,7 +851,7 @@
         </item>
 
         <item>
-          <p>[compiler] The MIB compiler could not handle a table index 
+          <p>[compiler] The MIB compiler could not handle a table index
 	  that was defined later in the MIB. </p>
           <p>Own Id: OTP-10808</p>
         </item>
@@ -853,7 +884,7 @@
     <title>SNMP Development Toolkit 4.23</title>
 <!--
     <p>Version 4.23 supports code replacement in runtime from/to
-    version 4.22.1, 
+    version 4.22.1,
     4.22, 4.21.7 4.21.6 4.21.5, 4.21.4, 4.21.3, 4.21.2, 4.21.1 and 4.21. </p>
 -->
 
@@ -865,14 +896,14 @@
 
       <list type="bulleted">
         <item>
-          <p>[manager] Polish return values of snmpm_user_default according 
+          <p>[manager] Polish return values of snmpm_user_default according
 	  to snmpm_user doc.</p>
 	  <p>Luca Favatella</p>
 	  <p>Own Id: OTP-10671</p>
         </item>
 
         <item>
-          <p>[agent] Remove runtime warning in snmpa_agent because of 
+          <p>[agent] Remove runtime warning in snmpa_agent because of
 	  tuple fun usage. </p>
 	  <p>Luca Favatella</p>
 	  <p>Own Id: OTP-10672</p>
@@ -894,10 +925,10 @@
       <!--
       <list type="bulleted">
         <item>
-          <p>[agent] Simultaneous 
-          <seealso marker="snmpa#backup">snmpa:backup/1,2</seealso> 
+          <p>[agent] Simultaneous
+          <seealso marker="snmpa#backup">snmpa:backup/1,2</seealso>
           calls can interfere.
-          The master agent did not check if a backup was already in 
+          The master agent did not check if a backup was already in
           progress when a backup request was accepted. </p>
           <p>Own Id: OTP-9884</p>
           <p>Aux Id: Seq 11995</p>
@@ -930,7 +961,7 @@
   <section>
     <title>SNMP Development Toolkit 4.22.1</title>
     <p>Version 4.22.1 supports code replacement in runtime from/to
-    version 4.22, 4.21.7 4.21.6 4.21.5, 4.21.4, 4.21.3, 4.21.2, 4.21.1 and 
+    version 4.22, 4.21.7 4.21.6 4.21.5, 4.21.4, 4.21.3, 4.21.2, 4.21.1 and
     4.21. </p>
 
     <section>
@@ -942,15 +973,15 @@
       <list type="bulleted">
         <item>
           <p>[agent] Sematic fixes to SNMP-USER-BASED-SM-MIB.
-	  The semantics allow the <c>usmUserAuthKeyChange</c> and 
-	  <c>usmUserPrivKeyChange</c> objects to be written to in the 
-	  same set requests that also creates and clones the user. 
-	  This was not possible beforehand, causing test tools checking 
+	  The semantics allow the <c>usmUserAuthKeyChange</c> and
+	  <c>usmUserPrivKeyChange</c> objects to be written to in the
+	  same set requests that also creates and clones the user.
+	  This was not possible beforehand, causing test tools checking
 	  semantic SNMPv3 behaviour to fail on a lot of test cases. </p>
-	  <p>Furthermore, once the user has been cloned by writing to an 
-	  instance of <c>usmUserCloneFrom</c>, further set-operations to 
-	  the same object will not return an error, but be no-ops. 
-	  Especially, it must be avoided to copy security parameters 
+	  <p>Furthermore, once the user has been cloned by writing to an
+	  instance of <c>usmUserCloneFrom</c>, further set-operations to
+	  the same object will not return an error, but be no-ops.
+	  Especially, it must be avoided to copy security parameters
 	  again (possibly even from a different user). </p>
 	  <p>Stefan Zegenhagen</p>
 	  <p>Own Id: OTP-10166</p>
@@ -958,14 +989,14 @@
 
         <item>
           <p>[agent] Errors in <c>vacmAccessTable</c> RowStatus handling.
-	  There are problems with the handling of vacmAccessTableStatus 
+	  There are problems with the handling of vacmAccessTableStatus
 	  that cause some SNMP test suites to report errors.
-	  Most notably, erroneous set operations frequently cause "genErr" 
-	  errors to be returned. These "genErr" errors are usually caused 
-	  by badmatch exceptions coming from 
-	  <c>{ok, Row} = snmpa_vacm:get_row(RowIndex)</c> 
+	  Most notably, erroneous set operations frequently cause "genErr"
+	  errors to be returned. These "genErr" errors are usually caused
+	  by badmatch exceptions coming from
+	  <c>{ok, Row} = snmpa_vacm:get_row(RowIndex)</c>
 	  if the row does not exist. </p>
-	  <p>The semantics of the RowStatus handling in that table has 
+	  <p>The semantics of the RowStatus handling in that table has
 	  been adjusted to be compliant with the RowStatus
 	  textual description of SNPMv2-TC MIB. </p>
 	  <p>Stefan Zegenhagen</p>
@@ -984,24 +1015,24 @@
       <list type="bulleted">
         <item>
           <p>[agent] Fix walk over vacmAccessTable.
-	  Fix the get_next implementation of vacmAccessTable to 
+	  Fix the get_next implementation of vacmAccessTable to
 	  return all table entries. </p>
-	  <p>The get_next implementation of vacmAccessTable did not return 
-	  all available table data. Instead, it only returned the first 
+	  <p>The get_next implementation of vacmAccessTable did not return
+	  all available table data. Instead, it only returned the first
 	  column for each row, and all columns for the last row available. </p>
 	  <p>Stefan Zegenhagen</p>
           <p>Own Id: OTP-10165</p>
         </item>
 
         <item>
-          <p>[manager] 
-	  <seealso marker="snmpm#log_to_io">snmpm:log_to_io/6</seealso> 
+          <p>[manager]
+	  <seealso marker="snmpm#log_to_io">snmpm:log_to_io/6</seealso>
 	  did not use the LogName argument. </p>
           <p>Own Id: OTP-10066</p>
         </item>
 
         <item>
-          <p>Incorrect TimeTicks decode. Also bad handling of 
+          <p>Incorrect TimeTicks decode. Also bad handling of
 	  invalid encode (value outside of value range) for both
 	  <c>TimeTicks</c> and <c>Unsigned32</c>. </p>
           <p>Own Id: OTP-10132</p>
@@ -1032,38 +1063,38 @@
 
       <list type="bulleted">
         <item>
-          <p>[compiler] The table information the MIB compiler provides with 
-	  augmented tables has been extended with <c>nbr_of_cols</c>, 
+          <p>[compiler] The table information the MIB compiler provides with
+	  augmented tables has been extended with <c>nbr_of_cols</c>,
 	  <c>first_accessible</c> and <c>not_accessible</c>. </p>
           <p>Own Id: OTP-9969</p>
         </item>
 
         <item>
-          <p>Added the <c>log_to_io</c> audit-trail-log converter function 
-	  to the api modules of both the 
-	  <seealso marker="snmpm#log_to_io">manager</seealso> 
-	  and 
+          <p>Added the <c>log_to_io</c> audit-trail-log converter function
+	  to the api modules of both the
+	  <seealso marker="snmpm#log_to_io">manager</seealso>
+	  and
 	  <seealso marker="snmpa#log_to_io">agent</seealso>. </p>
           <p>Own Id: OTP-9940</p>
         </item>
 
         <item>
-          <p>[manager] Introduced a new transport module, 
-	  <c>snmpm_net_if_mt</c>, 
-	  which handles all incomming and outgoing 
+          <p>[manager] Introduced a new transport module,
+	  <c>snmpm_net_if_mt</c>,
+	  which handles all incomming and outgoing
 	  traffic in newly created processes. The message/request is
 	  processed and then the process exits. </p>
           <p>Own Id: OTP-9876</p>
 	</item>
 
         <item>
-          <p>[agent] Documenting previously existing but undocumented function, 
+          <p>[agent] Documenting previously existing but undocumented function,
 	  <seealso marker="snmp_generic#get_table_info">snmp_generic:get_table_info/2</seealso>. </p>
 	  <p>Own Id: OTP-9942</p>
         </item>
 
         <item>
-          <p>[agent] Improve error handling while reading agent config files. 
+          <p>[agent] Improve error handling while reading agent config files.
 	  Some files contain mandatory information and is therefor themself
 	  mandatory. </p>
 	  <p>Own Id: OTP-9943</p>
@@ -1079,10 +1110,10 @@
       <!--
       <list type="bulleted">
         <item>
-          <p>[agent] Simultaneous 
-          <seealso marker="snmpa#backup">snmpa:backup/1,2</seealso> 
+          <p>[agent] Simultaneous
+          <seealso marker="snmpa#backup">snmpa:backup/1,2</seealso>
           calls can interfere.
-          The master agent did not check if a backup was already in 
+          The master agent did not check if a backup was already in
           progress when a backup request was accepted. </p>
           <p>Own Id: OTP-9884</p>
           <p>Aux Id: Seq 11995</p>
@@ -1104,7 +1135,7 @@
   <section>
     <title>SNMP Development Toolkit 4.21.7</title>
     <p>Version 4.21.7 supports code replacement in runtime from/to
-    version 4.21.6, 4.21.5, 4.21.4, 4.21.3, 4.21.2, 4.21.1, 4.21, 4.20.1 and 
+    version 4.21.6, 4.21.5, 4.21.4, 4.21.3, 4.21.2, 4.21.1, 4.21, 4.20.1 and
     4.20. </p>
 
     <section>
@@ -1114,13 +1145,13 @@
       <!--
       <list type="bulleted">
         <item>
-          <p>[agent] DoS attack using GET-BULK with large value of 
+          <p>[agent] DoS attack using GET-BULK with large value of
           MaxRepetitions.
-          A preventive method has been implementing by simply 
-          limit the number of varbinds that can be included in 
-          a Get-BULK response message. This is specified by the 
-          new config option, 
-          <seealso marker="snmp_app#agent_gb_max_vbs">gb_max_vbs</seealso>. 
+          A preventive method has been implementing by simply
+          limit the number of varbinds that can be included in
+          a Get-BULK response message. This is specified by the
+          new config option,
+          <seealso marker="snmp_app#agent_gb_max_vbs">gb_max_vbs</seealso>.
           </p>
           <p>Own Id: OTP-9700</p>
         </item>
@@ -1138,10 +1169,10 @@
 
       <list type="bulleted">
         <item>
-          <p>[agent] Simultaneous 
-          <seealso marker="snmpa#backup">snmpa:backup/1,2</seealso> 
+          <p>[agent] Simultaneous
+          <seealso marker="snmpa#backup">snmpa:backup/1,2</seealso>
           calls can interfere.
-          The master agent did not check if a backup was already in 
+          The master agent did not check if a backup was already in
           progress when a backup request was accepted. </p>
           <p>Own Id: OTP-9884</p>
           <p>Aux Id: Seq 11995</p>
@@ -1162,7 +1193,7 @@
   <section>
     <title>SNMP Development Toolkit 4.21.6</title>
     <p>Version 4.21.6 supports code replacement in runtime from/to
-    version 4.21.5, 4.21.4, 4.21.3, 4.21.2, 4.21.1, 4.21, 4.20.1 and 
+    version 4.21.5, 4.21.4, 4.21.3, 4.21.2, 4.21.1, 4.21, 4.20.1 and
     4.20. </p>
 
     <section>
@@ -1173,13 +1204,13 @@
 
       <list type="bulleted">
         <item>
-          <p>[agent] DoS attack using GET-BULK with large value of 
+          <p>[agent] DoS attack using GET-BULK with large value of
           MaxRepetitions.
-          A preventive method has been implementing by simply 
-          limit the number of varbinds that can be included in 
-          a Get-BULK response message. This is specified by the 
-          new config option, 
-          <seealso marker="snmp_app#agent_gb_max_vbs">gb_max_vbs</seealso>. 
+          A preventive method has been implementing by simply
+          limit the number of varbinds that can be included in
+          a Get-BULK response message. This is specified by the
+          new config option,
+          <seealso marker="snmp_app#agent_gb_max_vbs">gb_max_vbs</seealso>.
           </p>
           <p>Own Id: OTP-9700</p>
         </item>
@@ -1196,11 +1227,11 @@
 
       <list type="bulleted">
         <item>
-          <p>[agent] Mib server cache gclimit update function incorrectly calls 
-          age update function. 
-          The gclimit update function, 
-          <seealso marker="snmpa#update_mibs_cache_gclimit">update_mibs_cache_gclimit/1</seealso>, 
-          <em>incorrectly</em> called the age update function, 
+          <p>[agent] Mib server cache gclimit update function incorrectly calls
+          age update function.
+          The gclimit update function,
+          <seealso marker="snmpa#update_mibs_cache_gclimit">update_mibs_cache_gclimit/1</seealso>,
+          <em>incorrectly</em> called the age update function,
           <seealso marker="snmpa#update_mibs_cache_age">update_mibs_cache_age/2</seealso>. </p>
           <p>Johan Claesson</p>
           <p>Own Id: OTP-9868</p>
@@ -1242,18 +1273,18 @@
     <section>
       <title>Fixed Bugs and Malfunctions</title>
 <!--
-      <p>-</p> 
+      <p>-</p>
 -->
 
       <list type="bulleted">
         <item>
-          <p>[agent] Repeated vacm table dumping fails due to file name 
-          conflict. When dumping the vacm table to disk, a temoporary 
-          file with a fixed name was used. If the table dumping 
-          (snmpa_vacm:dump_table/0) was initiated from several different 
-          processes in rapid succesion, the dumping could fail because the 
-          different processes was simultaniously trying to write to the 
-          same file. This problem has been eliminated by creating a unique 
+          <p>[agent] Repeated vacm table dumping fails due to file name
+          conflict. When dumping the vacm table to disk, a temoporary
+          file with a fixed name was used. If the table dumping
+          (snmpa_vacm:dump_table/0) was initiated from several different
+          processes in rapid succesion, the dumping could fail because the
+          different processes was simultaniously trying to write to the
+          same file. This problem has been eliminated by creating a unique
           name for the temporary file. </p>
           <p>Own Id: OTP-9851</p>
           <p>Aux Id: Seq 11980</p>
@@ -1294,7 +1325,7 @@
 <!--
       <list type="bulleted">
         <item>
-          <p>[compiler] Improved version info printout from the 
+          <p>[compiler] Improved version info printout from the
           <seealso marker="snmpc(command)#">MIB compiler frontend escript</seealso>. </p>
           <p>Own Id: OTP-9618</p>
         </item>
@@ -1307,7 +1338,7 @@
     <section>
       <title>Fixed Bugs and Malfunctions</title>
 <!--
-      <p>-</p> 
+      <p>-</p>
 -->
 
       <list type="bulleted">
@@ -1351,7 +1382,7 @@
 
       <list type="bulleted">
         <item>
-          <p>[compiler] Improved version info printout from the 
+          <p>[compiler] Improved version info printout from the
 	  <seealso marker="snmpc(command)#">MIB compiler frontend escript</seealso>. </p>
           <p>Own Id: OTP-9618</p>
         </item>
@@ -1363,27 +1394,27 @@
     <section>
       <title>Fixed Bugs and Malfunctions</title>
 <!--
-      <p>-</p> 
+      <p>-</p>
 -->
 
       <list type="bulleted">
         <item>
-          <p>[agent] Version 4.20 introduced a change that broke trap 
-	  sending from subagents. Due to a bug in the test code, 
+          <p>[agent] Version 4.20 introduced a change that broke trap
+	  sending from subagents. Due to a bug in the test code,
 	  this was not discovered, until that bug was fixed. </p>
           <p>Own Id: OTP-9745</p>
         </item>
 
         <item>
-          <p>[agent] When sending an error message (reply) regarding 
+          <p>[agent] When sending an error message (reply) regarding
 	  <c>snmpUnknownPDUHandlers</c>, the agent used the wrong OID. </p>
           <p>Own Id: OTP-9747</p>
         </item>
 
         <item>
-          <p>[compiler] Fix the <c>--warnings/--W</c> option parsing in the 
+          <p>[compiler] Fix the <c>--warnings/--W</c> option parsing in the
           <seealso marker="snmpc(command)#option_warnings">snmpc</seealso>
-          wrapper (e)script. 
+          wrapper (e)script.
           The short warning option was incorrectly <c>--w</c>, instead
           of as documented <c>--W</c>. This has now been corrected. </p>
           <p>*** POTENTIAL INCOMPATIBILITY ***</p>
@@ -1403,7 +1434,7 @@
 
       <list type="bulleted">
         <item>
-          <p>[compiler] The short warning option has been changed from 
+          <p>[compiler] The short warning option has been changed from
           <c>--w</c> to <c>--W</c> to comply with the documentation. </p>
           <p>Tuncer Ayaz</p>
           <p>Own Id: OTP-9718</p>
@@ -1427,7 +1458,7 @@
 <!--
       <list type="bulleted">
         <item>
-          <p>Bad note store GC timer deactivation. 
+          <p>Bad note store GC timer deactivation.
 	  Wrong field in the state record was set (timeout instead active). </p>
           <p>Stefan Grundmann</p>
           <p>Own Id: OTP-9690</p>
@@ -1441,12 +1472,12 @@
     <section>
       <title>Fixed Bugs and Malfunctions</title>
 <!--
-      <p>-</p> 
+      <p>-</p>
 -->
 
       <list type="bulleted">
         <item>
-          <p>Bad note store GC timer deactivation. 
+          <p>Bad note store GC timer deactivation.
 	  Wrong field in the state record was set (timeout instead active). </p>
           <p>Stefan Grundmann</p>
           <p>Own Id: OTP-9690</p>
@@ -1476,13 +1507,13 @@
 -->
       <list type="bulleted">
         <item>
-          <p>[compiler] Used wrong variable name (for 
-	  warnings-as-errors variable), which caused the 
+          <p>[compiler] Used wrong variable name (for
+	  warnings-as-errors variable), which caused the
 	  compiler to crash when using the snmpc (e)script. </p>
-	  <p>Also added the option 
+	  <p>Also added the option
 	  <seealso marker="snmpc(command)#option_werror">--Werror</seealso>
-	  for the SNMP MIB compiler (escript) frontend (to mimic 
-	  <seealso marker="erts:erlc">erlc</seealso>), 
+	  for the SNMP MIB compiler (escript) frontend (to mimic
+	  <seealso marker="erts:erlc">erlc</seealso>),
 	  which specifies whether warnings should be treated as errors. </p>
           <p>Own Id: OTP-9447</p>
         </item>
@@ -1497,12 +1528,12 @@
 
     <section>
       <title>Fixed Bugs and Malfunctions</title>
-      <p>-</p> 
+      <p>-</p>
 
 <!--
       <list type="bulleted">
         <item>
-          <p>The snmp config tool could not handle (manager) audit trail config 
+          <p>The snmp config tool could not handle (manager) audit trail config
 	  because the option seqno was not handled. </p>
 	  <p>Own Id: OTP-9354</p>
 	</item>
@@ -1532,15 +1563,15 @@
 -->
       <list type="bulleted">
         <item>
-          <p>[manager] There was no way to specify transport domain. 
+          <p>[manager] There was no way to specify transport domain.
 	  The transport domains was assumed to be IPv4 (transportDomainUdpIpv4).
-	  This has now been changed so that it can also be IPv6 
-	  (transportDomainUdpIpv6). 
-	  To facilitate this, the transport domain, <c>tdomain</c>, 
-	  is now a (new) valid option when 
+	  This has now been changed so that it can also be IPv6
+	  (transportDomainUdpIpv6).
+	  To facilitate this, the transport domain, <c>tdomain</c>,
+	  is now a (new) valid option when
 	  <seealso marker="snmpm#register_agent">registering</seealso>
-	  a new agent (and 
-	  <seealso marker="snmpm#update_agent_info">updating</seealso> 
+	  a new agent (and
+	  <seealso marker="snmpm#update_agent_info">updating</seealso>
 	  agent info). </p>
 	  <p>This also mean that the transport behaviour has changed. </p>
           <p>Own Id: OTP-9305</p>
@@ -1548,10 +1579,10 @@
         </item>
 
         <item>
-          <p>[compiler] Added the option 
-	  <seealso marker="snmpc#compile">warnings_as_errors</seealso> 
-	  (for the SNMP MIB compiler (escript) frontend, the option 
-	  <seealso marker="snmpc(command)#option_wae">--wae</seealso> is used) 
+          <p>[compiler] Added the option
+	  <seealso marker="snmpc#compile">warnings_as_errors</seealso>
+	  (for the SNMP MIB compiler (escript) frontend, the option
+	  <seealso marker="snmpc(command)#option_wae">--wae</seealso> is used)
 	  which specifies whether warnings should be treated as errors. </p>
           <p>Tuncer Ayaz</p>
           <p>Own Id: OTP-9437</p>
@@ -1563,12 +1594,12 @@
     <section>
       <title>Fixed Bugs and Malfunctions</title>
 <!--
-      <p>-</p> 
+      <p>-</p>
 -->
 
       <list type="bulleted">
         <item>
-          <p>The snmp config tool could not handle (manager) audit trail config 
+          <p>The snmp config tool could not handle (manager) audit trail config
 	  because the option seqno was not handled. </p>
 	  <p>Own Id: OTP-9354</p>
 	</item>
@@ -1622,11 +1653,11 @@
     <section>
       <title>Fixed Bugs and Malfunctions</title>
 <!--
-      <p>-</p> 
+      <p>-</p>
 -->
       <list type="bulleted">
         <item>
-          <p>[agent] Did not handle transport domains properly in some cases, 
+          <p>[agent] Did not handle transport domains properly in some cases,
 	  for instance trap sending. </p>
 	  <p>Own Id: OTP-9400</p>
 	</item>
@@ -1663,9 +1694,9 @@
       <list type="bulleted">
         <item>
           <p>[agent] Added support for sending traps to IPv6 targets. </p>
-	  <p>See the 
-	  <seealso marker="snmp_agent_config_files#target_addr">target address config file</seealso>, 
-	  the <seealso marker="snmpa_conf#target_addr_entry">target_addr_entry/11</seealso> function or 
+	  <p>See the
+	  <seealso marker="snmp_agent_config_files#target_addr">target address config file</seealso>,
+	  the <seealso marker="snmpa_conf#target_addr_entry">target_addr_entry/11</seealso> function or
 	  <seealso marker="snmp_target_mib#add_addr">add_addr/11</seealso> for more info. </p>
           <p>Own Id: OTP-9088</p>
           <p>Aux Id: Seq 11790</p>
@@ -1674,7 +1705,7 @@
 
         <item>
           <p>[agent] To be able to handle multiple engine-id(s) when
-	  sending trap(s), the function 
+	  sending trap(s), the function
           <seealso marker="snmp_community_mib#add_community">
 	  add_community/6</seealso> has been added. </p>
           <p>Own Id: OTP-9119</p>
@@ -1684,14 +1715,14 @@
         <item>
           <p>[manager] The API for snmp requests has been augmented to
 	  allow the caller to override some configuration. </p>
-	  <p>This has been done by introducing a new set of API functions, see 
-	  <seealso marker="snmpm#sync_get2">sync_get2/3,4</seealso>, 
-	  <seealso marker="snmpm#async_get2">async_get2/3,4</seealso>, 
-	  <seealso marker="snmpm#sync_get_next2">sync_get_next2/3,4</seealso>, 
-	  <seealso marker="snmpm#async_get_next2">async_get_next2/3,4</seealso>, 
-	  <seealso marker="snmpm#sync_get_bulk2">sync_get_bulk2/5,6</seealso>, 
-	  <seealso marker="snmpm#async_get_bulk2">async_get_bulk2/5,6</seealso>, 
-	  <seealso marker="snmpm#sync_set2">sync_set2/3,4</seealso> and 
+	  <p>This has been done by introducing a new set of API functions, see
+	  <seealso marker="snmpm#sync_get2">sync_get2/3,4</seealso>,
+	  <seealso marker="snmpm#async_get2">async_get2/3,4</seealso>,
+	  <seealso marker="snmpm#sync_get_next2">sync_get_next2/3,4</seealso>,
+	  <seealso marker="snmpm#async_get_next2">async_get_next2/3,4</seealso>,
+	  <seealso marker="snmpm#sync_get_bulk2">sync_get_bulk2/5,6</seealso>,
+	  <seealso marker="snmpm#async_get_bulk2">async_get_bulk2/5,6</seealso>,
+	  <seealso marker="snmpm#sync_set2">sync_set2/3,4</seealso> and
 	  <seealso marker="snmpm#async_set2">async_set2/3,4</seealso>
 	  for more info. </p>
           <p>Own Id: OTP-9162</p>
@@ -1699,8 +1730,8 @@
 
         <item>
           <p>[manager] The old API functions (for get and set
-	  requests: 
-	  snmpm:g/3,4,5,6,7, snmpm:ag/3,4,5,6,7, 
+	  requests:
+	  snmpm:g/3,4,5,6,7, snmpm:ag/3,4,5,6,7,
 	  snmpm:gn/3,4,5,6,7, snmpm:agn/3,4,5,6,7,
 	  snmpm:s/3,4,5,6,7, snmpm:s/3,4,5,6,7,
 	  snmpm:gb/5,6,7,8,9 and snmpm:agb/5,6,7,8,9)
@@ -1712,12 +1743,12 @@
         <item>
           <p>[agent] Pass extra info through the agent to the net-if
 	  process when sending notifications. </p>
-	  <p>See 
+	  <p>See
 	  <seealso marker="snmpa#send_notification2">
-	  snmpa:send_notification2/3</seealso> for more info. 
-	  See also the incomming net-if messages when sending a 
-	  <seealso marker="snmp_agent_netif#im_send_pdu">trap</seealso> 
-	  (send_pdu message) and 
+	  snmpa:send_notification2/3</seealso> for more info.
+	  See also the incomming net-if messages when sending a
+	  <seealso marker="snmp_agent_netif#im_send_pdu">trap</seealso>
+	  (send_pdu message) and
 	  <seealso marker="snmp_agent_netif#im_send_pdu_req">
 	  notification</seealso> (send_pdu_req message). </p>
           <p>Own Id: OTP-9183</p>
@@ -1735,15 +1766,15 @@
     <section>
       <title>Fixed Bugs and Malfunctions</title>
 <!--
-      <p>-</p> 
+      <p>-</p>
 -->
 
       <list type="bulleted">
         <item>
           <p>Fixed endode/decode of values of type <c>Counter32</c>. </p>
-	  <p>This type (<c>Counter32</c>) is an unsigned integer 32, 
-	  but is actually encoded as an signed integer 32. 
-	  The encode/decode functions however, treated it as if it was 
+	  <p>This type (<c>Counter32</c>) is an unsigned integer 32,
+	  but is actually encoded as an signed integer 32.
+	  The encode/decode functions however, treated it as if it was
 	  encodeded as an unsigned integer 32. </p>
 	  <p>Own Id: OTP-9022</p>
 	</item>
@@ -1758,12 +1789,4 @@
     </section>
 
   </section> <!-- 4.20 -->
-
-
-  <!-- section>
-    <title>Release notes history</title>
-    <p>For information about older versions see
-      <url href="part_notes_history_frame.html">release notes history</url>.</p>
-  </section -->
 </chapter>
-
diff --git a/lib/snmp/doc/src/part_notes.xml b/lib/snmp/doc/src/part_notes.xml
deleted file mode 100644
index d149044169..0000000000
--- a/lib/snmp/doc/src/part_notes.xml
+++ /dev/null
@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>1997</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>SNMP Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-    <file>part_notes.xml</file>
-  </header>
-  <description>
-    <p>A multilingual Simple Network Management Protocol application,
-      featuring an Extensible Agent, a simple manager and a MIB 
-      compiler and facilities for implementing SNMP MIBs etc.</p>
-    <p>For information about older versions see
-      <url href="part_notes_history_frame.html">release notes history</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/snmp/doc/src/part_notes_history.xml b/lib/snmp/doc/src/part_notes_history.xml
deleted file mode 100644
index aa5276dc94..0000000000
--- a/lib/snmp/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,42 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>SNMP Release Notes History</title>
-    <prepared></prepared>
-    <responsible></responsible>
-    <docno></docno>
-    <approved></approved>
-    <checked></checked>
-    <date></date>
-    <rev></rev>
-    <file>part_notes_history.xml</file>
-  </header>
-  <description>
-    <p>A multilingual Simple Network Management Protocol application,
-      featuring an Extensible Agent, a simple manager and a MIB 
-      compiler and facilities for implementing SNMP MIBs etc.</p>
-  </description>
-  <include file="notes_history"></include>
-</part>
-
diff --git a/lib/snmp/doc/src/ref_man.gif b/lib/snmp/doc/src/ref_man.gif
deleted file mode 100644
index b13c4efd53..0000000000
--- a/lib/snmp/doc/src/ref_man.gif
+++ /dev/null
diff --git a/lib/snmp/doc/src/snmp.gif b/lib/snmp/doc/src/snmp.gif
deleted file mode 100644
index d9985f990b..0000000000
--- a/lib/snmp/doc/src/snmp.gif
+++ /dev/null
diff --git a/lib/snmp/doc/src/summary.html.src b/lib/snmp/doc/src/summary.html.src
deleted file mode 100644
index 9bad4adbeb..0000000000
--- a/lib/snmp/doc/src/summary.html.src
+++ /dev/null
@@ -1 +0,0 @@
-Simple Network Management Protocol (SNMP) support including a MIB compiler, a simple SNMP manager and tools for creating SNMP agents
diff --git a/lib/snmp/doc/src/user_guide.gif b/lib/snmp/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/snmp/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/snmp/doc/src/warning.gif b/lib/snmp/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/snmp/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/snmp/src/app/snmp.appup.src b/lib/snmp/src/app/snmp.appup.src
index bde637744c..ca61782639 100644
--- a/lib/snmp/src/app/snmp.appup.src
+++ b/lib/snmp/src/app/snmp.appup.src
@@ -8,19 +8,6 @@
 %% {update, snmpa_local_db, soft, soft_purge, soft_purge, []}
 %% {add_module,  snmpm_net_if_mt}
  [
-  {<<"5\\.2\\.6">>,
-   [{load_module, snmpc, soft_purge, soft_purge, []},
-    {load_module, snmpc_lib, soft_purge, soft_purge, []}]},
-  {<<"5\\.2\\.5">>,
-   [{load_module, snmpc, soft_purge, soft_purge, []},
-    {load_module, snmpc_lib, soft_purge, soft_purge, []},
-    {load_module, snmp_generic, soft_purge, soft_purge, []}]},
-  {<<"5\\.2\\.4">>,
-   [{load_module, snmpc, soft_purge, soft_purge, []},
-    {load_module, snmp_generic, soft_purge, soft_purge, []},
-    {load_module, snmp, soft_purge, soft_purge, []},
-    {load_module, snmpc_lib, soft_purge, soft_purge, []},
-    {load_module, snmpc_mib_gram, soft_purge, soft_purge, []}]},
   {<<"5\\..*">>, [{restart_application, snmp}]},	
   {<<"4\\..*">>, [{restart_application, snmp}]}
  ],
@@ -30,19 +17,6 @@
 %% {remove, {snmpm_net_if_mt, soft_purge, soft_purge}}
  
  [
-  {<<"5\\.2\\.6">>,
-   [{load_module, snmpc, soft_purge, soft_purge, []},
-    {load_module, snmpc_lib, soft_purge, soft_purge, []}]},
-  {<<"5\\.2\\.5">>,
-   [{load_module, snmpc, soft_purge, soft_purge, []},
-    {load_module, snmpc_lib, soft_purge, soft_purge, []},
-    {load_module, snmp_generic, soft_purge, soft_purge, []}]},
-  {<<"5\\.2\\.4">>,
-   [{load_module, snmpc, soft_purge, soft_purge, []},
-    {load_module, snmp_generic, soft_purge, soft_purge, []},
-    {load_module, snmp, soft_purge, soft_purge, []},
-    {load_module, snmpc_lib, soft_purge, soft_purge, []},
-    {load_module, snmpc_mib_gram, soft_purge, soft_purge, []}]},
   {<<"5\\..*">>, [{restart_application, snmp}]},	
   {<<"4\\..*">>, [{restart_application, snmp}]}
  ]  	       
diff --git a/lib/snmp/src/manager/snmpm_net_if.erl b/lib/snmp/src/manager/snmpm_net_if.erl
index 93c987eb0f..29216f9d6a 100644
--- a/lib/snmp/src/manager/snmpm_net_if.erl
+++ b/lib/snmp/src/manager/snmpm_net_if.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2015. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2017. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -367,7 +367,7 @@ common_socket_opts(Opts) ->
 	     default ->
 		 [];
 	     Sz ->
-		 [{sndbuf, Sz}]
+		 [{recbuf, Sz}]
 	 end ++
 	 case get_opt(Opts, no_reuse, false) of
 	     false ->
diff --git a/lib/snmp/test/snmp_agent_test.erl b/lib/snmp/test/snmp_agent_test.erl
index 3c1a6f2afd..2ed2c4580c 100644
--- a/lib/snmp/test/snmp_agent_test.erl
+++ b/lib/snmp/test/snmp_agent_test.erl
@@ -605,7 +605,12 @@ init_per_group(multiple_reqs_3 = GroupName, Config) ->
 init_per_group(test_multi_threaded = GroupName, Config) -> 
     init_mt(snmp_test_lib:init_group_top_dir(GroupName, Config));
 init_per_group(test_v3 = GroupName, Config) -> 
-    init_v3(snmp_test_lib:init_group_top_dir(GroupName, Config));
+    case snmp_test_lib:crypto_start() of
+        ok ->
+            init_v3(snmp_test_lib:init_group_top_dir(GroupName, Config));
+        _ ->
+            {skip, "Crypto did not start"}
+    end;
 init_per_group(test_v1_v2 = GroupName, Config) -> 
     init_v1_v2(snmp_test_lib:init_group_top_dir(GroupName, Config));
 init_per_group(test_v2 = GroupName, Config) -> 
@@ -631,11 +636,26 @@ init_per_group(mib_storage_varm_dets = GroupName, Config) ->
     init_varm_mib_storage_dets(
       snmp_test_lib:init_group_top_dir(GroupName, Config));
 init_per_group(mib_storage_size_check_mnesia = GroupName, Config) -> 
-    init_size_check_msm(snmp_test_lib:init_group_top_dir(GroupName, Config));
+       case snmp_test_lib:crypto_start() of
+           ok ->
+               init_size_check_msm(snmp_test_lib:init_group_top_dir(GroupName, Config));
+           _ ->
+               {skip, "Crypto did not start"}
+       end;
 init_per_group(mib_storage_size_check_dets = GroupName, Config) -> 
-    init_size_check_msd(snmp_test_lib:init_group_top_dir(GroupName, Config));
+       case snmp_test_lib:crypto_start() of
+           ok ->
+               init_size_check_msm(snmp_test_lib:init_group_top_dir(GroupName, Config));
+           _ ->
+               {skip, "Crypto did not start"}
+       end;
 init_per_group(mib_storage_size_check_ets = GroupName, Config) -> 
-    init_size_check_mse(snmp_test_lib:init_group_top_dir(GroupName, Config));
+           case snmp_test_lib:crypto_start() of
+           ok ->
+               init_size_check_msm(snmp_test_lib:init_group_top_dir(GroupName, Config));
+           _ ->
+               {skip, "Crypto did not start"}
+       end;
 init_per_group(mib_storage_mnesia = GroupName, Config) -> 
     init_mib_storage_mnesia(snmp_test_lib:init_group_top_dir(GroupName, 
 							     Config));
diff --git a/lib/snmp/test/snmp_manager_test.erl b/lib/snmp/test/snmp_manager_test.erl
index 4bfeb0f8d1..6ced55f0cc 100644
--- a/lib/snmp/test/snmp_manager_test.erl
+++ b/lib/snmp/test/snmp_manager_test.erl
@@ -156,16 +156,25 @@ init_per_suite(Config0) when is_list(Config0) ->
     ?DBG("init_per_suite -> entry with"
 	 "~n   Config0: ~p", [Config0]),
 
-    Config1   = snmp_test_lib:init_suite_top_dir(?MODULE, Config0), 
-    Config2   = snmp_test_lib:fix_data_dir(Config1),
-
-    %% Mib-dirs
-    %% data_dir is trashed by the test-server / common-test
-    %% so there is no point in fixing it...
-    MibDir    = snmp_test_lib:lookup(data_dir, Config2),
-    StdMibDir = filename:join([code:priv_dir(snmp), "mibs"]),
-
-    [{mib_dir, MibDir}, {std_mib_dir, StdMibDir} | Config2].
+    %% Preferably this test SUITE should be divided into groups
+    %% so that if crypto does not work only v3 tests that
+    %% need crypto will be skipped, but as this is only a
+    %% problem with one legacy test machine, we will procrastinate
+    %% until we have a more important reason to fix this. 
+    case snmp_test_lib:crypto_start() of
+        ok ->
+            Config1   = snmp_test_lib:init_suite_top_dir(?MODULE, Config0), 
+            Config2   = snmp_test_lib:fix_data_dir(Config1),
+            %% Mib-dirs
+            %% data_dir is trashed by the test-server / common-test
+            %% so there is no point in fixing it...
+            MibDir    = snmp_test_lib:lookup(data_dir, Config2),
+            StdMibDir = filename:join([code:priv_dir(snmp), "mibs"]),
+            
+            [{mib_dir, MibDir}, {std_mib_dir, StdMibDir} | Config2];
+        _ ->
+            {skip, "Crypto did not start"}
+    end.
 
 end_per_suite(Config) when is_list(Config) ->
 
diff --git a/lib/snmp/test/snmp_to_snmpnet_SUITE.erl b/lib/snmp/test/snmp_to_snmpnet_SUITE.erl
index 24c14d86ea..6a3466b6e4 100644
--- a/lib/snmp/test/snmp_to_snmpnet_SUITE.erl
+++ b/lib/snmp/test/snmp_to_snmpnet_SUITE.erl
@@ -88,8 +88,17 @@ groups() ->
     ].
 
 init_per_suite(Config) ->
-    [{agent_port, ?AGENT_PORT}, {manager_port, ?MANAGER_PORT} | Config].
-    
+    case re:run(os:cmd("snmpd -v"),"NET-SNMP", [{capture, first}]) of
+        nomatch ->
+            {skip, "snmpd is NOT NET-SNMP"};
+        {match, _} ->
+            case re:run(os:cmd("snmpd -v"),"5.4|5.6.2.1", [{capture, first}]) of
+                nomatch ->
+                    [{agent_port, ?AGENT_PORT}, {manager_port, ?MANAGER_PORT} | Config];
+                {match, _} ->
+                    {skip, "buggy snmpd"}
+            end
+    end.
 end_per_suite(_Config) ->
     ok.
 
@@ -322,7 +331,7 @@ snmpget(Oid, Transport, Config) ->
 
     Args =
 	["-c", "public", net_snmp_version(Versions),
-	 "-m", "",
+	 "-m", ":",
 	 "-Cf",
 	 net_snmp_addr_str(Transport),
 	 oid_str(Oid)],
@@ -353,11 +362,13 @@ start_snmpd(Community, SysDescr, Config) ->
 	["--rocommunity"++domain_suffix(Domain)++"="
 	 ++Community++" "++inet_parse:ntoa(Ip)
 	 || {Domain, {Ip, _}} <- Targets],
+
     SnmpdArgs =
-	["-f", "-r", %"-Dverbose",
-	 "-c", filename:join(DataDir, "snmpd.conf"),
-	 "-C", "-Lo",
-	 "-m", "",
+        ["-f", "-r", %"-Dverbose",
+         "-c", filename:join(DataDir, "snmpd.conf"),
+         "-C",
+         "-Lo",
+	 "-m", ":",
 	 "--sysDescr="++SysDescr,
 	 "--agentXSocket=tcp:localhost:"++integer_to_list(Port)]
 	++ CommunityArgs
diff --git a/lib/snmp/vsn.mk b/lib/snmp/vsn.mk
index 207f0084d8..c195f9f5d9 100644
--- a/lib/snmp/vsn.mk
+++ b/lib/snmp/vsn.mk
@@ -19,6 +19,6 @@
 # %CopyrightEnd%
 
 APPLICATION = snmp
-SNMP_VSN    = 5.2.7
+SNMP_VSN    = 5.2.9
 PRE_VSN     =
 APP_VSN     = "$(APPLICATION)-$(SNMP_VSN)$(PRE_VSN)"
diff --git a/lib/ssh/doc/src/Makefile b/lib/ssh/doc/src/Makefile
index adbda5a030..f54f5e0708 100644
--- a/lib/ssh/doc/src/Makefile
+++ b/lib/ssh/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 2004-2016. All Rights Reserved.
+# Copyright Ericsson AB 2004-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -48,18 +48,18 @@ XML_REF3_FILES = ssh.xml \
 
 XML_REF6_FILES = ssh_app.xml
 
-XML_PART_FILES = part_notes.xml \
+XML_PART_FILES = \
 		 usersguide.xml
 XML_CHAPTER_FILES = notes.xml \
 	introduction.xml \
-	ssh_protocol.xml \
 	using_ssh.xml \
 	configure_algos.xml
+#	ssh_protocol.xml \
 
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES)  $(XML_REF6_FILES)\
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
 IMAGE_FILES = SSH_protocols.png
 
@@ -85,10 +85,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -116,12 +116,12 @@ clean clean_docs:
 man: $(MAN3_FILES) $(MAN6_FILES)
 
 
-debug opt: 
+debug opt:
 
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/ssh/doc/src/fascicules.xml b/lib/ssh/doc/src/fascicules.xml
deleted file mode 100644
index 7e99398c16..0000000000
--- a/lib/ssh/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="usersguide" href="usersguide_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/ssh/doc/src/notes.xml b/lib/ssh/doc/src/notes.xml
index ef3e94a1e1..3a2f55a487 100644
--- a/lib/ssh/doc/src/notes.xml
+++ b/lib/ssh/doc/src/notes.xml
@@ -30,12 +30,96 @@
     <file>notes.xml</file>
   </header>
 
-<section><title>Ssh 4.6.1</title>
+<section><title>Ssh 4.6.4</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
         <item>
           <p>
+	    Fix problem with OpenSSH 7.2 (and later) clients that has
+	    used sha1 instead of sha2 for rsa-sha-256/512 user's
+	    public keys.</p>
+          <p>
+	    Own Id: OTP-14827 Aux Id: ERL-531 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Ssh 4.6.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Passphrase option for ecdsa public keys was missing.</p>
+          <p>
+	    Own Id: OTP-14602</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    The host and user public key handling is hardened so that
+	    a faulty plugin can't deliver a key of wrong type.</p>
+          <p>
+	    Better checks in the server of the available hostkey's
+	    types at start and at each accept.</p>
+          <p>
+	    Better checks in the client of the available user public
+	    key types at connect.</p>
+          <p>
+	    Own Id: OTP-14676 Aux Id: ERIERL-52, OTP-14570 </p>
+        </item>
+        <item>
+          <p>
+	    SSH can now fetch the host key from the private keys
+	    stored in an Engine. See the crypto application for
+	    details about Engines.</p>
+          <p>
+	    Own Id: OTP-14757</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Ssh 4.6.2</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Trailing white space was removed at end of the
+	    hello-string. This caused interoperability problems with
+	    some other ssh-implementations (e.g OpenSSH 7.3p1 on
+	    Solaris 11)</p>
+          <p>
+	    Own Id: OTP-14763 Aux Id: ERIERL-74 </p>
+        </item>
+        <item>
+          <p>
+	    Fixes that tcp connections that was immediately closed
+	    (SYN, SYNACK, ACK, RST) by a client could be left in a
+	    zombie state.</p>
+          <p>
+	    Own Id: OTP-14778 Aux Id: ERIERL-104 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>Ssh 4.6.1</title>
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
 	    Fixed broken printout</p>
           <p>
 	    Own Id: OTP-14645</p>
diff --git a/lib/ssh/doc/src/part_notes.xml b/lib/ssh/doc/src/part_notes.xml
deleted file mode 100644
index aaca8ca9f2..0000000000
--- a/lib/ssh/doc/src/part_notes.xml
+++ /dev/null
@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-
-    </legalnotice>
-
-    <title>SSH Release Notes</title>
-    <prepared>Jakob Cederlund</prepared>
-    <docno></docno>
-    <date></date>
-    <rev>%VSN%</rev>
-    <file>part_notes.sgml</file>
-  </header>
-  <description>
-    <p>This document describes the changes made to the SSH application.
-      </p>
-  </description>
-  <xi:include file="notes.xml"/>
-</part>
-
diff --git a/lib/ssh/doc/src/ssh_client_key_api.xml b/lib/ssh/doc/src/ssh_client_key_api.xml
index a1cd9d4b02..98a1676ca4 100644
--- a/lib/ssh/doc/src/ssh_client_key_api.xml
+++ b/lib/ssh/doc/src/ssh_client_key_api.xml
@@ -56,11 +56,17 @@
       <tag><c>string() =</c></tag>
       <item><p><c>[byte()]</c></p></item>
       <tag><c>public_key() =</c></tag>
-      <item><p><c>#'RSAPublicKey'{}| {integer(),  #'Dss-Parms'{}}| term()</c></p></item>
+      <item><p><c>#'RSAPublicKey'{} 
+      | {integer(),#'Dss-Parms'{}} 
+      | {#'ECPoint'{},{namedCurve,Curve::string()}}</c></p></item>
       <tag><c>private_key() =</c></tag>
-      <item><p><c>#'RSAPrivateKey'{} | #'DSAPrivateKey'{} | term()</c></p></item>
+      <item><p><c>#'RSAPrivateKey'{} 
+      | #'DSAPrivateKey'{} 
+      | #'ECPrivateKey'{}</c></p></item>      
       <tag><c>public_key_algorithm() =</c></tag>
-      <item><p><c>'ssh-rsa'| 'ssh-dss' | atom()</c></p></item>
+      <item><p><c>'ssh-rsa' | 'ssh-dss' 
+      | 'rsa-sha2-256' | 'rsa-sha2-384' | 'rsa-sha2-512' 
+      | 'ecdsa-sha2-nistp256' | 'ecdsa-sha2-nistp384' | 'ecdsa-sha2-nistp521' </c></p></item>
     </taglist>
   </section>
 
@@ -73,10 +79,11 @@
       <d>Description of the host that owns the <c>PublicKey</c>.</d>
 
       <v>Key = public_key()</v>
-      <d>Normally an RSA or DSA public key, but handling of other public keys can be added.</d>
+      <d>Normally an RSA, DSA or ECDSA public key, but handling of other public keys can be added.</d>
 
       <v>ConnectOptions = proplists:proplist()</v>
-      <d>Options provided to <seealso marker="ssh#connect-3">ssh:connect/[3,4]</seealso></d>
+      <d>Options provided to <seealso marker="ssh#connect-3">ssh:connect/[3,4]</seealso>. The option list given in
+	the <c>key_cb</c> option is available with the key <c>key_cb_private</c>.</d>
       <v>Reason = term().</v>
       </type>
       <desc>
@@ -89,17 +96,17 @@
       <fsummary>Checks if a host key is trusted.</fsummary>
       <type>
 	<v>Key = public_key() </v>
-	<d>Normally an RSA or DSA public key, but handling of other public keys can be added.</d>
+	<d>Normally an RSA, DSA or ECDSA public key, but handling of other public keys can be added.</d>
 
 	<v>Host = string()</v>
 	<d>Description of the host.</d>
 
 	<v>Algorithm = public_key_algorithm()</v>
-	<d>Host key algorithm. Is to support <c>'ssh-rsa'| 'ssh-dss'</c>, but more algorithms
-	can be handled.</d>
+	<d>Host key algorithm.</d>
 
 	<v>ConnectOptions = proplists:proplist() </v>
-	<d>Options provided to <seealso marker="ssh#connect-3">ssh:connect/[3,4]</seealso>.</d>
+	<d>Options provided to <seealso marker="ssh#connect-3">ssh:connect/[3,4]</seealso>. The option list given in
+	the <c>key_cb</c> option is available with the key <c>key_cb_private</c>.</d>
 
 	<v>Result = boolean()</v>
       </type>
@@ -110,15 +117,15 @@
 
     <func>
       <name>Module:user_key(Algorithm, ConnectOptions) ->
-      {ok,  PrivateKey}  | {error, Reason}</name>
+      {ok, PrivateKey}  | {error, Reason}</name>
       <fsummary>Fetches the users <em>public key</em> matching the <c>Algorithm</c>.</fsummary>
       <type>
 	<v>Algorithm = public_key_algorithm()</v>
-	<d>Host key algorithm. Is to support <c>'ssh-rsa'| 'ssh-dss'</c> but more algorithms
-	can be handled.</d>
+	<d>Host key algorithm.</d>
 
 	<v>ConnectOptions = proplists:proplist()</v>
-	<d>Options provided to <seealso marker="ssh#connect-3">ssh:connect/[3,4]</seealso></d>
+	<d>Options provided to <seealso marker="ssh#connect-3">ssh:connect/[3,4]</seealso>. The option list given in
+	the <c>key_cb</c> option is available with the key <c>key_cb_private</c>.</d>
 
 	<v>PrivateKey = private_key()</v>
 	<d>Private key of the user matching the <c>Algorithm</c>.</d>
diff --git a/lib/ssh/doc/src/ssh_server_key_api.xml b/lib/ssh/doc/src/ssh_server_key_api.xml
index a0694ca8d9..c6808b95d1 100644
--- a/lib/ssh/doc/src/ssh_server_key_api.xml
+++ b/lib/ssh/doc/src/ssh_server_key_api.xml
@@ -57,11 +57,17 @@
       <tag><c>string() =</c></tag>
       <item><p><c>[byte()]</c></p></item>
       <tag><c>public_key() =</c></tag>
-      <item><p><c>#'RSAPublicKey'{}| {integer(),  #'Dss-Parms'{}}| term()</c></p></item>
+      <item><p><c>#'RSAPublicKey'{} 
+      | {integer(),#'Dss-Parms'{}} 
+      | {#'ECPoint'{},{namedCurve,Curve::string()}}</c></p></item>
       <tag><c>private_key() =</c></tag>
-      <item><p><c>#'RSAPrivateKey'{} | #'DSAPrivateKey'{} | term()</c></p></item>
+      <item><p><c>#'RSAPrivateKey'{} 
+      | #'DSAPrivateKey'{} 
+      | #'ECPrivateKey'{}</c></p></item>      
       <tag><c>public_key_algorithm() =</c></tag>
-      <item><p><c>'ssh-rsa'| 'ssh-dss' | atom()</c></p></item>
+      <item><p><c>'ssh-rsa' | 'ssh-dss' 
+      | 'rsa-sha2-256' | 'rsa-sha2-384' | 'rsa-sha2-512'
+      | 'ecdsa-sha2-nistp256' | 'ecdsa-sha2-nistp384' | 'ecdsa-sha2-nistp521' </c></p></item>
     </taglist>
   </section>
   
@@ -72,12 +78,13 @@
       <fsummary>Fetches the host’s private key.</fsummary>
       <type>
 	<v>Algorithm = public_key_algorithm()</v>
-	<d>Host key algorithm. Is to support <c>'ssh-rsa' | 'ssh-dss'</c>, but more algorithms
-	can be handled.</d>
+	<d>Host key algorithm.</d>
 	<v>DaemonOptions = proplists:proplist()</v>
-	<d>Options provided to <seealso marker="ssh#daemon-2">ssh:daemon/[2,3]</seealso>.</d>
-	<v>Key = private_key()</v>
-	<d>Private key of the host matching the <c>Algorithm</c>.</d>
+	<d>Options provided to <seealso marker="ssh#daemon-2">ssh:daemon/[2,3]</seealso>. The option list given in
+	the <c>key_cb</c> option is available with the key <c>key_cb_private</c>.</d>
+	<v>Key = private_key() | crypto:engine_key_ref()</v>
+	<d>Private key of the host matching the <c>Algorithm</c>.
+	It may be a reference to a 'ssh-rsa', rsa-sha2-* or 'ssh-dss' (NOT ecdsa) key stored in a loaded Engine.</d>
 	<v>Reason = term()</v>
       </type>
       <desc>
@@ -90,11 +97,12 @@
       <fsummary>Checks if the user key is authorized.</fsummary>
       <type>
 	<v>Key = public_key()</v>
-	<d>Normally an RSA or DSA public key, but handling of other public keys can be added</d>
+	<d>Normally an RSA, DSA or ECDSA public key, but handling of other public keys can be added</d>
 	<v>User = string()</v>
 	<d>User owning the public key.</d>
 	<v>DaemonOptions = proplists:proplist()</v>
-	<d>Options provided to  <seealso marker="ssh#daemon-2">ssh:daemon/[2,3]</seealso>.</d>
+	<d>Options provided to <seealso marker="ssh#daemon-2">ssh:daemon/[2,3]</seealso>. The option list given in
+	the <c>key_cb</c> option is available with the key <c>key_cb_private</c>.</d>
 	<v>Result = boolean()</v>
       </type>
       <desc>
diff --git a/lib/ssh/src/ssh.app.src b/lib/ssh/src/ssh.app.src
index 974292fde1..4a22322333 100644
--- a/lib/ssh/src/ssh.app.src
+++ b/lib/ssh/src/ssh.app.src
@@ -42,10 +42,10 @@
   {env, []},
   {mod, {ssh_app, []}},
   {runtime_dependencies, [
-			  "crypto-3.7.3",
+			  "crypto-4.2",
 			  "erts-6.0",
 			  "kernel-3.0",
-			  "public_key-1.4",
+			  "public_key-1.5.2",
 			  "stdlib-3.3"
 			 ]}]}.
 
diff --git a/lib/ssh/src/ssh.erl b/lib/ssh/src/ssh.erl
index 1a5d48baca..032d87bdad 100644
--- a/lib/ssh/src/ssh.erl
+++ b/lib/ssh/src/ssh.erl
@@ -188,6 +188,7 @@ daemon(Port) ->
 daemon(Socket, UserOptions) when is_port(Socket) ->
     try
         #{} = Options = ssh_options:handle_options(server, UserOptions),
+
         case valid_socket_to_use(Socket, ?GET_OPT(transport,Options)) of
             ok ->
                 {ok, {IP,Port}} = inet:sockname(Socket),
@@ -461,6 +462,9 @@ open_listen_socket(_Host0, Port0, Options0) ->
 %%%----------------------------------------------------------------
 finalize_start(Host, Port, Profile, Options0, F) ->
     try
+        %% throws error:Error if no usable hostkey is found
+        ssh_connection_handler:available_hkey_algorithms(server, Options0),
+
         sshd_sup:start_child(Host, Port, Profile, Options0)
     of
         {error, {already_started, _}} ->
@@ -470,6 +474,8 @@ finalize_start(Host, Port, Profile, Options0, F) ->
         Result = {ok,_} ->
             F(Options0, Result)
     catch
+        error:{shutdown,Err} ->
+            {error,Err};
         exit:{noproc, _} ->
             {error, ssh_not_started}
     end.
diff --git a/lib/ssh/src/ssh.hrl b/lib/ssh/src/ssh.hrl
index d6d412db43..3dee1c5521 100644
--- a/lib/ssh/src/ssh.hrl
+++ b/lib/ssh/src/ssh.hrl
@@ -63,8 +63,8 @@
 -define(uint16(X), << ?UINT16(X) >> ).
 -define(uint32(X), << ?UINT32(X) >> ).
 -define(uint64(X), << ?UINT64(X) >> ).
--define(string(X), << ?STRING(list_to_binary(X)) >> ).
 -define(string_utf8(X), << ?STRING(unicode:characters_to_binary(X)) >> ).
+-define(string(X), ?string_utf8(X)).
 -define(binary(X), << ?STRING(X) >>).
 
 %% Cipher details
diff --git a/lib/ssh/src/ssh_auth.erl b/lib/ssh/src/ssh_auth.erl
index ac64a7bf14..03d264745b 100644
--- a/lib/ssh/src/ssh_auth.erl
+++ b/lib/ssh/src/ssh_auth.erl
@@ -145,14 +145,17 @@ get_public_key(SigAlg, #ssh{opts = Opts}) ->
     case KeyCb:user_key(KeyAlg, [{key_cb_private,KeyCbOpts}|UserOpts]) of
         {ok, PrivKey} ->
             try
+                %% Check the key - the KeyCb may be a buggy plugin
+                true = ssh_transport:valid_key_sha_alg(PrivKey, KeyAlg),
                 Key = ssh_transport:extract_public_key(PrivKey),
                 public_key:ssh_encode(Key, ssh2_pubkey)
             of
                 PubKeyBlob -> {ok,{PrivKey,PubKeyBlob}}
             catch
                 _:_ -> 
-		    not_ok
+                    not_ok
             end;
+
 	_Error ->
 	    not_ok
     end.
@@ -301,11 +304,10 @@ handle_userauth_request(#ssh_msg_userauth_request{user = User,
 							   SigWLen/binary>>
 						 }, 
 			SessionId, 
-			#ssh{opts = Opts,
-			     userauth_supported_methods = Methods} = Ssh) ->
+			#ssh{userauth_supported_methods = Methods} = Ssh) ->
     
     case verify_sig(SessionId, User, "ssh-connection", 
-		    BAlg, KeyBlob, SigWLen, Opts) of
+		    BAlg, KeyBlob, SigWLen, Ssh) of
 	true ->
 	    {authorized, User, 
 	     ssh_transport:ssh_packet(
@@ -515,7 +517,7 @@ pre_verify_sig(User, KeyBlob, Opts) ->
 	    false
     end.
 
-verify_sig(SessionId, User, Service, AlgBin, KeyBlob, SigWLen, Opts) ->
+verify_sig(SessionId, User, Service, AlgBin, KeyBlob, SigWLen, #ssh{opts = Opts} = Ssh) ->
     try
         Alg = binary_to_list(AlgBin),
         {KeyCb,KeyCbOpts} = ?GET_OPT(key_cb, Opts),
@@ -526,7 +528,7 @@ verify_sig(SessionId, User, Service, AlgBin, KeyBlob, SigWLen, Opts) ->
         <<?UINT32(AlgSigLen), AlgSig:AlgSigLen/binary>> = SigWLen,
         <<?UINT32(AlgLen), _Alg:AlgLen/binary,
           ?UINT32(SigLen), Sig:SigLen/binary>> = AlgSig,
-        ssh_transport:verify(PlainText, ssh_transport:sha(Alg), Sig, Key)
+        ssh_transport:verify(PlainText, ssh_transport:sha(Alg), Sig, Key, Ssh)
     catch
 	_:_ ->
 	    false
diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl
index 4158a52a27..0ca960ef96 100644
--- a/lib/ssh/src/ssh_connection_handler.erl
+++ b/lib/ssh/src/ssh_connection_handler.erl
@@ -46,6 +46,7 @@
 
 %%% Internal application API
 -export([start_connection/4,
+         available_hkey_algorithms/2,
 	 open_channel/6,
 	 request/6, request/7,
 	 reply_request/3, 
@@ -324,23 +325,32 @@ renegotiate_data(ConnectionHandler) ->
 %% Internal process state
 %%====================================================================
 -record(data, {
-	  starter                               :: pid(),
+	  starter                               :: pid()
+						 | undefined,
 	  auth_user                             :: string()
 						 | undefined,
 	  connection_state                      :: #connection{},
-	  latest_channel_id         = 0         :: non_neg_integer(),
+	  latest_channel_id         = 0         :: non_neg_integer()
+                                                 | undefined,
 	  idle_timer_ref                        :: undefined 
 						 | infinity
 						 | reference(),
 	  idle_timer_value          = infinity  :: infinity
 						 | pos_integer(),
-	  transport_protocol                    :: atom(),	% ex: tcp
-	  transport_cb                          :: atom(),	% ex: gen_tcp
-	  transport_close_tag                   :: atom(),	% ex: tcp_closed
-	  ssh_params                            :: #ssh{},
-	  socket                                :: inet:socket(),
-	  decrypted_data_buffer     = <<>>      :: binary(),
-	  encrypted_data_buffer     = <<>>      :: binary(),
+	  transport_protocol                    :: atom()
+                                                 | undefined,	% ex: tcp
+	  transport_cb                          :: atom()
+                                                 | undefined,	% ex: gen_tcp
+	  transport_close_tag                   :: atom()
+                                                 | undefined,	% ex: tcp_closed
+	  ssh_params                            :: #ssh{}
+                                                 | undefined,
+	  socket                                :: inet:socket()
+                                                 | undefined,
+	  decrypted_data_buffer     = <<>>      :: binary()
+                                                 | undefined,
+	  encrypted_data_buffer     = <<>>      :: binary()
+                                                 | undefined,
 	  undecrypted_packet_length             :: undefined | non_neg_integer(),
 	  key_exchange_init_msg                 :: #ssh_msg_kexinit{}
 						 | undefined,
@@ -369,16 +379,17 @@ init_connection_handler(Role, Socket, Opts) ->
                                   StartState,
                                   D);
 
-        {stop, enotconn} ->
-	    %% Handles the abnormal sequence:
-	    %%    SYN->
-	    %%            <-SYNACK
-	    %%    ACK->
-	    %%    RST->
-	    exit({shutdown, "TCP connection to server was prematurely closed by the client"});
-        
-	{stop, OtherError} ->
-	    exit({shutdown, {init,OtherError}})
+        {stop, Error} ->
+            Sups = ?GET_INTERNAL_OPT(supervisors, Opts),
+            C = #connection{system_supervisor =     proplists:get_value(system_sup,     Sups),
+                            sub_system_supervisor = proplists:get_value(subsystem_sup,  Sups),
+                            connection_supervisor = proplists:get_value(connection_sup, Sups)
+                           },
+            gen_statem:enter_loop(?MODULE,
+                                  [],
+                                  {init_error,Error},
+                                  #data{connection_state=C,
+                                        socket=Socket})
     end.
 
 
@@ -432,13 +443,12 @@ init_ssh_record(Role, Socket, Opts) ->
     init_ssh_record(Role, Socket, PeerAddr, Opts).
 
 init_ssh_record(Role, _Socket, PeerAddr, Opts) ->
-    KeyCb = ?GET_OPT(key_cb, Opts),
     AuthMethods = ?GET_OPT(auth_methods, Opts),
     S0 = #ssh{role = Role,
-	      key_cb = KeyCb,
+	      key_cb = ?GET_OPT(key_cb, Opts),
 	      opts = Opts,
 	      userauth_supported_methods = AuthMethods,
-	      available_host_keys = supported_host_keys(Role, KeyCb, Opts),
+	      available_host_keys = available_hkey_algorithms(Role, Opts),
 	      random_length_padding = ?GET_OPT(max_random_length_padding, Opts)
 	   },
 
@@ -531,6 +541,21 @@ renegotiation(_) -> false.
 callback_mode() ->
     handle_event_function.
 
+
+handle_event(_, _Event, {init_error,Error}, _) ->
+    case Error of
+        enotconn ->
+           %% Handles the abnormal sequence:
+           %%    SYN->
+           %%            <-SYNACK
+           %%    ACK->
+           %%    RST->
+            {stop, {shutdown,"TCP connenction to server was prematurely closed by the client"}};
+
+        OtherError ->
+            {stop, {shutdown,{init,OtherError}}}
+    end;
+
 %%% ######## {hello, client|server} ####
 %% The very first event that is sent when the we are set as controlling process of Socket
 handle_event(_, socket_control, {hello,_}, D) ->
@@ -1544,44 +1569,42 @@ peer_role(client) -> server;
 peer_role(server) -> client.
 
 %%--------------------------------------------------------------------
-supported_host_keys(client, _, Options) ->
-    try
-        find_sup_hkeys(Options)
-    of
-	[] ->
+available_hkey_algorithms(Role, Options) ->
+    KeyCb = ?GET_OPT(key_cb, Options),
+    case [A || A <- available_hkey_algos(Options),
+               (Role==client) orelse available_host_key(KeyCb, A, Options)
+         ] of
+        
+        [] when Role==client ->
 	    error({shutdown, "No public key algs"});
-	Algs ->
-	    [atom_to_list(A) || A<-Algs]
-    catch
-	exit:Reason ->
-	    error({shutdown, Reason})
-    end;
-supported_host_keys(server, KeyCb, Options) ->
-    [atom_to_list(A) || A <- find_sup_hkeys(Options),
-			available_host_key(KeyCb, A, Options)
-    ].
 
+        [] when Role==server ->
+	    error({shutdown, "No host key available"});
 
-find_sup_hkeys(Options) ->
-    case proplists:get_value(public_key,
-                             ?GET_OPT(preferred_algorithms,Options)
-                            )
-    of
-        undefined ->
-            ssh_transport:default_algorithms(public_key);
-        L ->
-            NonSupported =  L--ssh_transport:supported_algorithms(public_key),
-            L -- NonSupported
+	Algs ->
+	    [atom_to_list(A) || A<-Algs]
     end.
 
 
+available_hkey_algos(Options) ->
+    SupAlgos = ssh_transport:supported_algorithms(public_key),
+    HKeys = proplists:get_value(public_key,
+                                ?GET_OPT(preferred_algorithms,Options)
+                               ),
+    NonSupported =  HKeys -- SupAlgos,
+    AvailableAndSupported = HKeys -- NonSupported,
+    AvailableAndSupported.
+
 
 %% Alg :: atom()
 available_host_key({KeyCb,KeyCbOpts}, Alg, Opts) ->
     UserOpts = ?GET_OPT(user_options, Opts),
     case KeyCb:host_key(Alg, [{key_cb_private,KeyCbOpts}|UserOpts]) of
-        {ok,_} -> true;
-        _ -> false
+        {ok,Key} ->
+            %% Check the key - the KeyCb may be a buggy plugin
+            ssh_transport:valid_key_sha_alg(Key, Alg);
+        _ ->
+            false
     end.
 
 
diff --git a/lib/ssh/src/ssh_dbg.erl b/lib/ssh/src/ssh_dbg.erl
index 906640b490..af9ad52d68 100644
--- a/lib/ssh/src/ssh_dbg.erl
+++ b/lib/ssh/src/ssh_dbg.erl
@@ -24,6 +24,7 @@
 
 -export([messages/0, messages/1, messages/2, messages/3,
 	 auth/0,     auth/1,     auth/2,     auth/3,
+	 algs/0,     algs/1,     algs/2,     algs/3,
 	 hostkey/0,  hostkey/1,  hostkey/2,  hostkey/3,
 	 stop/0
 	]).
@@ -47,6 +48,11 @@ auth(F) -> start(auth,F).
 auth(F,X) -> start(auth,F,X).
 auth(F,M,I) -> start(auth,F,M,I).
 
+algs() -> start(algs).
+algs(F) -> start(algs,F).
+algs(F,X) -> start(algs,F,X).
+algs(F,M,I) -> start(algs,F,M,I).
+
 hostkey() -> start(hostkey).
 hostkey(F) -> start(hostkey,F).
 hostkey(F,X) -> start(hostkey,F,X).
@@ -95,6 +101,11 @@ dbg_ssh0(auth) ->
                [publickey_msg, password_msg, keyboard_interactive_msg])
     ];
 
+dbg_ssh0(algs) ->
+    [dbg:tpl(ssh_transport,select_algorithm,4, x),
+     dbg:tpl(ssh_connection_handler,ext_info,2, x)
+    ];
+
 dbg_ssh0(hostkey) ->
     [dbg:tpl(ssh_transport, verify_host_key, 4, x),
      dbg:tp(ssh_transport, verify, 4, x),
diff --git a/lib/ssh/src/ssh_message.erl b/lib/ssh/src/ssh_message.erl
index b1fc05ae33..eb06f05a4a 100644
--- a/lib/ssh/src/ssh_message.erl
+++ b/lib/ssh/src/ssh_message.erl
@@ -252,12 +252,12 @@ encode(#ssh_msg_kexdh_init{e = E}) ->
     <<?Ebyte(?SSH_MSG_KEXDH_INIT), ?Empint(E)>>;
 
 encode(#ssh_msg_kexdh_reply{
-	  public_host_key = Key,
+	  public_host_key = {Key,SigAlg},
 	  f = F,
 	  h_sig = Signature
 	 }) ->
     EncKey = public_key:ssh_encode(Key, ssh2_pubkey),
-    EncSign = encode_signature(Key, Signature),
+    EncSign = encode_signature(Key, SigAlg, Signature),
     <<?Ebyte(?SSH_MSG_KEXDH_REPLY), ?Ebinary(EncKey), ?Empint(F), ?Ebinary(EncSign)>>;
 
 encode(#ssh_msg_kex_dh_gex_request{
@@ -278,20 +278,20 @@ encode(#ssh_msg_kex_dh_gex_init{e = Public}) ->
 
 encode(#ssh_msg_kex_dh_gex_reply{
 	  %% Will be private key encode_host_key extracts only the public part!
-	  public_host_key = Key,
+	  public_host_key = {Key,SigAlg},
 	  f = F,
 	  h_sig = Signature
 	 }) ->
     EncKey = public_key:ssh_encode(Key, ssh2_pubkey),
-    EncSign = encode_signature(Key, Signature),
+    EncSign = encode_signature(Key, SigAlg, Signature),
     <<?Ebyte(?SSH_MSG_KEX_DH_GEX_REPLY), ?Ebinary(EncKey), ?Empint(F), ?Ebinary(EncSign)>>;
 
 encode(#ssh_msg_kex_ecdh_init{q_c = Q_c}) ->
     <<?Ebyte(?SSH_MSG_KEX_ECDH_INIT), ?Empint(Q_c)>>;
 
-encode(#ssh_msg_kex_ecdh_reply{public_host_key = Key, q_s = Q_s, h_sig = Sign}) ->
+encode(#ssh_msg_kex_ecdh_reply{public_host_key = {Key,SigAlg}, q_s = Q_s, h_sig = Sign}) ->
     EncKey = public_key:ssh_encode(Key, ssh2_pubkey),
-    EncSign = encode_signature(Key, Sign),
+    EncSign = encode_signature(Key, SigAlg, Sign),
     <<?Ebyte(?SSH_MSG_KEX_ECDH_REPLY), ?Ebinary(EncKey), ?Empint(Q_s), ?Ebinary(EncSign)>>;
 
 encode(#ssh_msg_ignore{data = Data}) ->
@@ -602,12 +602,12 @@ decode_signature(<<?DEC_BIN(Alg,__0), ?UINT32(_), Signature/binary>>) ->
     {binary_to_list(Alg), Signature}.
 
 
-encode_signature({#'RSAPublicKey'{},Sign}, Signature) ->
-    SignName = list_to_binary(atom_to_list(Sign)),
+encode_signature(#'RSAPublicKey'{}, SigAlg, Signature) ->
+    SignName = list_to_binary(atom_to_list(SigAlg)),
     <<?Ebinary(SignName), ?Ebinary(Signature)>>;
-encode_signature({{_, #'Dss-Parms'{}},_}, Signature) ->
+encode_signature({_, #'Dss-Parms'{}}, _SigAlg, Signature) ->
     <<?Ebinary(<<"ssh-dss">>), ?Ebinary(Signature)>>;
-encode_signature({{#'ECPoint'{}, {namedCurve,OID}},_}, Signature) ->
+encode_signature({#'ECPoint'{}, {namedCurve,OID}}, _SigAlg, Signature) ->
     CurveName = public_key:oid2ssh_curvename(OID),
     <<?Ebinary(<<"ecdsa-sha2-",CurveName/binary>>), ?Ebinary(Signature)>>.
 
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl
index 46154cf536..154894cda8 100644
--- a/lib/ssh/src/ssh_transport.erl
+++ b/lib/ssh/src/ssh_transport.erl
@@ -51,7 +51,7 @@
 	 extract_public_key/1,
 	 ssh_packet/2, pack/2,
          valid_key_sha_alg/2,
-	 sha/1, sign/3, verify/4]).
+	 sha/1, sign/3, verify/5]).
 
 %%% For test suites
 -export([pack/3]).
@@ -426,7 +426,7 @@ handle_kexdh_init(#ssh_msg_kexdh_init{e = E},
 	    K = compute_key(dh, E, Private, [P,G]),
 	    MyPrivHostKey = get_host_key(Ssh0, SignAlg),
 	    MyPubHostKey = extract_public_key(MyPrivHostKey),
-            H = kex_hash(Ssh0, MyPubHostKey, SignAlg, sha(Kex), {E,Public,K}),
+            H = kex_hash(Ssh0, MyPubHostKey, sha(Kex), {E,Public,K}),
             H_SIG = sign(H, sha(SignAlg), MyPrivHostKey),
 	    {SshPacket, Ssh1} = 
 		ssh_packet(#ssh_msg_kexdh_reply{public_host_key = {MyPubHostKey,SignAlg},
@@ -451,13 +451,12 @@ handle_kexdh_reply(#ssh_msg_kexdh_reply{public_host_key = PeerPubHostKey,
 					f = F,
 					h_sig = H_SIG}, 
 		   #ssh{keyex_key = {{Private, Public}, {G, P}},
-                        algorithms = #alg{kex=Kex,
-                                          hkey=SignAlg}} = Ssh0) ->
+                        algorithms = #alg{kex=Kex}} = Ssh0) ->
     %% client
     if 
 	1=<F, F=<(P-1)->
 	    K = compute_key(dh, F, Private, [P,G]),
-            H = kex_hash(Ssh0, PeerPubHostKey, SignAlg, sha(Kex), {Public,F,K}),
+            H = kex_hash(Ssh0, PeerPubHostKey, sha(Kex), {Public,F,K}),
 	    case verify_host_key(Ssh0, PeerPubHostKey, H, H_SIG) of
 		ok ->
 		    {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0),
@@ -590,7 +589,7 @@ handle_kex_dh_gex_init(#ssh_msg_kex_dh_gex_init{e = E},
 		1<K, K<(P-1) ->
 		    MyPrivHostKey = get_host_key(Ssh0, SignAlg),
 		    MyPubHostKey = extract_public_key(MyPrivHostKey),
-                    H = kex_hash(Ssh0, MyPubHostKey, SignAlg, sha(Kex), {Min,NBits,Max,P,G,E,Public,K}),
+                    H = kex_hash(Ssh0, MyPubHostKey, sha(Kex), {Min,NBits,Max,P,G,E,Public,K}),
                     H_SIG = sign(H, sha(SignAlg), MyPrivHostKey),
 		    {SshPacket, Ssh} = 
 			ssh_packet(#ssh_msg_kex_dh_gex_reply{public_host_key = {MyPubHostKey,SignAlg},
@@ -620,8 +619,7 @@ handle_kex_dh_gex_reply(#ssh_msg_kex_dh_gex_reply{public_host_key = PeerPubHostK
 						  h_sig = H_SIG},
 			#ssh{keyex_key = {{Private, Public}, {G, P}},
 			     keyex_info = {Min, Max, NBits},
-                             algorithms = #alg{kex=Kex,
-                                               hkey=SignAlg}} = 
+                             algorithms = #alg{kex=Kex}} = 
 			    Ssh0) ->
     %% client
     if 
@@ -629,7 +627,7 @@ handle_kex_dh_gex_reply(#ssh_msg_kex_dh_gex_reply{public_host_key = PeerPubHostK
 	    K = compute_key(dh, F, Private, [P,G]),
 	    if
 		1<K, K<(P-1) ->
-                    H = kex_hash(Ssh0, PeerPubHostKey, SignAlg, sha(Kex), {Min,NBits,Max,P,G,Public,F,K}),
+                    H = kex_hash(Ssh0, PeerPubHostKey, sha(Kex), {Min,NBits,Max,P,G,Public,F,K}),
 		    case verify_host_key(Ssh0, PeerPubHostKey, H, H_SIG) of
 			ok ->
 			    {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0),
@@ -676,7 +674,7 @@ handle_kex_ecdh_init(#ssh_msg_kex_ecdh_init{q_c = PeerPublic},
 	K ->
 	    MyPrivHostKey = get_host_key(Ssh0, SignAlg),
 	    MyPubHostKey = extract_public_key(MyPrivHostKey),
-            H = kex_hash(Ssh0, MyPubHostKey, SignAlg, sha(Curve), {PeerPublic, MyPublic, K}),
+            H = kex_hash(Ssh0, MyPubHostKey, sha(Curve), {PeerPublic, MyPublic, K}),
             H_SIG = sign(H, sha(SignAlg), MyPrivHostKey),
 	    {SshPacket, Ssh1} = 
 		ssh_packet(#ssh_msg_kex_ecdh_reply{public_host_key = {MyPubHostKey,SignAlg},
@@ -699,15 +697,15 @@ handle_kex_ecdh_init(#ssh_msg_kex_ecdh_init{q_c = PeerPublic},
 handle_kex_ecdh_reply(#ssh_msg_kex_ecdh_reply{public_host_key = PeerPubHostKey,
 					      q_s = PeerPublic,
 					      h_sig = H_SIG},
-		      #ssh{keyex_key = {{MyPublic,MyPrivate}, Curve},
-                           algorithms = #alg{hkey=SignAlg}} = Ssh0
+		      #ssh{keyex_key = {{MyPublic,MyPrivate}, Curve}
+                          } = Ssh0
 		     ) ->
     %% at client
     try
 	compute_key(ecdh, PeerPublic, MyPrivate, Curve)
     of
 	K ->
-            H = kex_hash(Ssh0, PeerPubHostKey,  SignAlg, sha(Curve), {MyPublic,PeerPublic,K}),
+            H = kex_hash(Ssh0, PeerPubHostKey, sha(Curve), {MyPublic,PeerPublic,K}),
 	    case verify_host_key(Ssh0, PeerPubHostKey, H, H_SIG) of
 		ok ->
 		    {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0),
@@ -797,8 +795,14 @@ get_host_key(SSH, SignAlg) ->
     #ssh{key_cb = {KeyCb,KeyCbOpts}, opts = Opts} = SSH,
     UserOpts = ?GET_OPT(user_options, Opts),
     case KeyCb:host_key(SignAlg, [{key_cb_private,KeyCbOpts}|UserOpts]) of
-	{ok, PrivHostKey} ->  PrivHostKey;
-	Result -> exit({error, {Result, unsupported_key_type}})
+	{ok, PrivHostKey} ->
+            %% Check the key - the KeyCb may be a buggy plugin
+            case valid_key_sha_alg(PrivHostKey, SignAlg) of
+                true -> PrivHostKey;
+                false -> exit({error, bad_hostkey})
+            end;
+	Result ->
+            exit({error, {Result, unsupported_key_type}})
     end.
 
 extract_public_key(#'RSAPrivateKey'{modulus = N, publicExponent = E}) ->
@@ -807,13 +811,21 @@ extract_public_key(#'DSAPrivateKey'{y = Y, p = P, q = Q, g = G}) ->
     {Y,  #'Dss-Parms'{p=P, q=Q, g=G}};
 extract_public_key(#'ECPrivateKey'{parameters = {namedCurve,OID},
 				   publicKey = Q}) ->
-    {#'ECPoint'{point=Q}, {namedCurve,OID}}.
+    {#'ECPoint'{point=Q}, {namedCurve,OID}};
+extract_public_key(#{engine:=_, key_id:=_, algorithm:=Alg} = M) ->
+    case {Alg, crypto:privkey_to_pubkey(Alg, M)} of
+        {rsa, [E,N]} ->
+            #'RSAPublicKey'{modulus = N, publicExponent = E};
+        {dss, [P,Q,G,Y]} ->
+            {Y, #'Dss-Parms'{p=P, q=Q, g=G}}
+    end.
+
 
 
 verify_host_key(#ssh{algorithms=Alg}=SSH, PublicKey, Digest, {AlgStr,Signature}) ->
     case atom_to_list(Alg#alg.hkey) of
         AlgStr ->
-            case verify(Digest, sha(Alg#alg.hkey), Signature, PublicKey) of
+            case verify(Digest, sha(Alg#alg.hkey), Signature, PublicKey, SSH) of
                 false ->
                     {error, bad_signature};
                 true ->
@@ -1257,10 +1269,12 @@ payload(<<PacketLen:32, PaddingLen:8, PayloadAndPadding/binary>>) ->
     <<Payload:PayloadLen/binary, _/binary>> = PayloadAndPadding,
     Payload.
 
+sign(SigData, HashAlg, #{algorithm:=dss} = Key) ->
+    mk_dss_sig(crypto:sign(dss, HashAlg, SigData, Key));
+sign(SigData, HashAlg, #{algorithm:=SigAlg} = Key) ->
+    crypto:sign(SigAlg, HashAlg, SigData, Key);
 sign(SigData, HashAlg,  #'DSAPrivateKey'{} = Key) ->
-    DerSignature = public_key:sign(SigData, HashAlg, Key),
-    #'Dss-Sig-Value'{r = R, s = S} = public_key:der_decode('Dss-Sig-Value', DerSignature),
-    <<R:160/big-unsigned-integer, S:160/big-unsigned-integer>>;
+    mk_dss_sig(public_key:sign(SigData, HashAlg, Key));
 sign(SigData, HashAlg, Key = #'ECPrivateKey'{}) ->
     DerEncodedSign =  public_key:sign(SigData, HashAlg, Key),
     #'ECDSA-Sig-Value'{r=R, s=S} = public_key:der_decode('ECDSA-Sig-Value', DerEncodedSign),
@@ -1268,7 +1282,13 @@ sign(SigData, HashAlg, Key = #'ECPrivateKey'{}) ->
 sign(SigData, HashAlg, Key) ->
     public_key:sign(SigData, HashAlg, Key).
 
-verify(PlainText, HashAlg, Sig, {_,  #'Dss-Parms'{}} = Key) ->
+
+mk_dss_sig(DerSignature) ->
+    #'Dss-Sig-Value'{r = R, s = S} = public_key:der_decode('Dss-Sig-Value', DerSignature),
+    <<R:160/big-unsigned-integer, S:160/big-unsigned-integer>>.
+
+
+verify(PlainText, HashAlg, Sig, {_,  #'Dss-Parms'{}} = Key, _) ->
     case Sig of
         <<R:160/big-unsigned-integer, S:160/big-unsigned-integer>> ->
             Signature = public_key:der_encode('Dss-Sig-Value', #'Dss-Sig-Value'{r = R, s = S}),
@@ -1276,7 +1296,7 @@ verify(PlainText, HashAlg, Sig, {_,  #'Dss-Parms'{}} = Key) ->
         _ ->
             false
     end;
-verify(PlainText, HashAlg, Sig, {#'ECPoint'{},_} = Key) ->
+verify(PlainText, HashAlg, Sig, {#'ECPoint'{},_} = Key, _) ->
     case Sig of
         <<?UINT32(Rlen),R:Rlen/big-signed-integer-unit:8,
           ?UINT32(Slen),S:Slen/big-signed-integer-unit:8>> ->
@@ -1286,7 +1306,15 @@ verify(PlainText, HashAlg, Sig, {#'ECPoint'{},_} = Key) ->
         _ ->
             false
     end;
-verify(PlainText, HashAlg, Sig, Key) ->
+
+verify(PlainText, HashAlg, Sig, #'RSAPublicKey'{}=Key, #ssh{role = server,
+                                                            c_version = "SSH-2.0-OpenSSH_7."++_})
+  when HashAlg == sha256; HashAlg == sha512 ->
+    %% Public key signing bug in in OpenSSH >= 7.2
+    public_key:verify(PlainText, HashAlg, Sig, Key)
+        orelse public_key:verify(PlainText, sha, Sig, Key);
+
+verify(PlainText, HashAlg, Sig, Key, _) ->
     public_key:verify(PlainText, HashAlg, Sig, Key).
 
 
@@ -1794,11 +1822,11 @@ hash(K, H, Ki, N, HashAlg) ->
     hash(K, H, <<Ki/binary, Kj/binary>>, N-128, HashAlg).
 
 %%%----------------------------------------------------------------
-kex_hash(SSH, Key, SignAlg, HashAlg, Args) ->
-    crypto:hash(HashAlg, kex_plaintext(SSH,Key,SignAlg,Args)).
+kex_hash(SSH, Key, HashAlg, Args) ->
+    crypto:hash(HashAlg, kex_plaintext(SSH,Key,Args)).
 
-kex_plaintext(SSH, Key, SignAlg, Args) ->
-    EncodedKey = public_key:ssh_encode({Key,SignAlg}, ssh2_pubkey),
+kex_plaintext(SSH, Key, Args) ->
+    EncodedKey = public_key:ssh_encode(Key, ssh2_pubkey),
     <<?Estring(SSH#ssh.c_version), ?Estring(SSH#ssh.s_version),
       ?Ebinary(SSH#ssh.c_keyinit), ?Ebinary(SSH#ssh.s_keyinit),
       ?Ebinary(EncodedKey),
@@ -1819,6 +1847,8 @@ kex_alg_dependent({Min, NBits, Max, Prime, Gen, E, F, K}) ->
 
 %%%----------------------------------------------------------------
 
+valid_key_sha_alg(#{engine:=_, key_id:=_}, _Alg) -> true; % Engine key
+
 valid_key_sha_alg(#'RSAPublicKey'{}, 'rsa-sha2-512') -> true;
 valid_key_sha_alg(#'RSAPublicKey'{}, 'rsa-sha2-384') -> true;
 valid_key_sha_alg(#'RSAPublicKey'{}, 'rsa-sha2-256') -> true;
@@ -1832,11 +1862,14 @@ valid_key_sha_alg(#'RSAPrivateKey'{}, 'ssh-rsa'     ) -> true;
 valid_key_sha_alg({_, #'Dss-Parms'{}}, 'ssh-dss') -> true;
 valid_key_sha_alg(#'DSAPrivateKey'{},  'ssh-dss') -> true;
 
-valid_key_sha_alg({#'ECPoint'{},{namedCurve,OID}},                Alg) -> sha(OID) == sha(Alg);
-valid_key_sha_alg(#'ECPrivateKey'{parameters = {namedCurve,OID}}, Alg) -> sha(OID) == sha(Alg);
+valid_key_sha_alg({#'ECPoint'{},{namedCurve,OID}},                Alg) -> valid_key_sha_alg_ec(OID, Alg);
+valid_key_sha_alg(#'ECPrivateKey'{parameters = {namedCurve,OID}}, Alg) -> valid_key_sha_alg_ec(OID, Alg);
 valid_key_sha_alg(_, _) -> false.
     
-
+valid_key_sha_alg_ec(OID, Alg) -> 
+    Curve = public_key:oid2ssh_curvename(OID),
+    Alg == list_to_atom("ecdsa-sha2-" ++ binary_to_list(Curve)).
+    
 
 public_algo(#'RSAPublicKey'{}) ->   'ssh-rsa';  % FIXME: Not right with draft-curdle-rsa-sha2
 public_algo({_, #'Dss-Parms'{}}) -> 'ssh-dss';
@@ -2002,12 +2035,6 @@ same(Algs) ->  [{client2server,Algs}, {server2client,Algs}].
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 trim_tail(Str) ->
-    lists:reverse(trim_head(lists:reverse(Str))).
-
-trim_head([$\s|Cs]) -> trim_head(Cs);
-trim_head([$\t|Cs]) -> trim_head(Cs);
-trim_head([$\n|Cs]) -> trim_head(Cs);
-trim_head([$\r|Cs]) -> trim_head(Cs);
-trim_head(Cs) -> Cs.
-
-
+    lists:takewhile(fun(C) -> 
+			    C=/=$\r andalso C=/=$\n
+		    end, Str).
diff --git a/lib/ssh/test/Makefile b/lib/ssh/test/Makefile
index 5ea048a352..a18383d148 100644
--- a/lib/ssh/test/Makefile
+++ b/lib/ssh/test/Makefile
@@ -38,6 +38,7 @@ MODULES= \
 	ssh_basic_SUITE \
 	ssh_bench_SUITE \
 	ssh_connection_SUITE \
+	ssh_engine_SUITE \
 	ssh_protocol_SUITE \
 	ssh_property_test_SUITE \
 	ssh_sftp_SUITE \
@@ -49,6 +50,7 @@ MODULES= \
 	ssh_test_lib \
 	ssh_key_cb \
 	ssh_key_cb_options \
+	ssh_key_cb_engine_keys \
 	ssh_trpt_test_lib \
 	ssh_echo_server \
 	ssh_bench_dev_null \
diff --git a/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl b/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl
index c07140dc43..19e2754eba 100644
--- a/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl
+++ b/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl
@@ -57,9 +57,9 @@
 
 %%% Properties:
 
-prop_seq(_Config) ->
+prop_seq(Config) ->
     {ok,Pid} = ssh_eqc_event_handler:add_report_handler(),
-    {_, _, Port} = init_daemon(),
+    {_, _, Port} = init_daemon(Config),
     numtests(1000,
 	     ?FORALL(Delay, choose(0,100),%% Micro seconds
 		     try 
@@ -86,7 +86,8 @@ any_relevant_error_report(Pid) ->
 	      end, Reports).
 
 %%%================================================================
-init_daemon() ->
+init_daemon(Config) ->
     ok = begin ssh:stop(), ssh:start() end,
-    ssh_test_lib:daemon([]).
+    DataDir = proplists:get_value(data_dir, Config),
+    ssh_test_lib:daemon([{system_dir,DataDir}]).
 
diff --git a/lib/ssh/test/ssh_basic_SUITE.erl b/lib/ssh/test/ssh_basic_SUITE.erl
index db2ae241e5..202b0afe57 100644
--- a/lib/ssh/test/ssh_basic_SUITE.erl
+++ b/lib/ssh/test/ssh_basic_SUITE.erl
@@ -46,6 +46,7 @@
 	 exec_key_differs2/1,
 	 exec_key_differs3/1,
 	 exec_key_differs_fail/1,
+         fail_daemon_start/1,
 	 idle_time_client/1,
 	 idle_time_server/1,
 	 inet6_option/1,
@@ -105,6 +106,7 @@ all() ->
      {group, host_user_key_differs},
      {group, key_cb},
      {group, internal_error},
+     {group, rsa_host_key_is_actualy_ecdsa},
      daemon_already_started,
      double_close,
      daemon_opt_fd,
@@ -121,6 +123,7 @@ groups() ->
      {ecdsa_sha2_nistp256_key, [], basic_tests()},
      {ecdsa_sha2_nistp384_key, [], basic_tests()},
      {ecdsa_sha2_nistp521_key, [], basic_tests()},
+     {rsa_host_key_is_actualy_ecdsa, [], [fail_daemon_start]},
      {host_user_key_differs, [], [exec_key_differs1,
 				  exec_key_differs2,
 				  exec_key_differs3,
@@ -180,6 +183,31 @@ init_per_group(rsa_key, Config) ->
 	false ->
 	    {skip, unsupported_pub_key}
     end;
+init_per_group(rsa_host_key_is_actualy_ecdsa, Config) ->
+    case 
+        lists:member('ssh-rsa',
+		      ssh_transport:default_algorithms(public_key)) and
+        lists:member('ecdsa-sha2-nistp256',
+                     ssh_transport:default_algorithms(public_key))
+    of
+	true ->
+            DataDir = proplists:get_value(data_dir, Config),
+            PrivDir = proplists:get_value(priv_dir, Config),
+	    ssh_test_lib:setup_ecdsa("256", DataDir, PrivDir),
+            %% The following sets up bad rsa keys:
+            begin
+                UserDir = PrivDir,
+                System = filename:join(UserDir, "system"),
+                file:copy(filename:join(DataDir, "id_rsa"), filename:join(UserDir, "id_rsa")),
+                file:rename(filename:join(System, "ssh_host_ecdsa_key"), filename:join(System, "ssh_host_rsa_key")),
+                file:rename(filename:join(System, "ssh_host_ecdsa_key.pub"), filename:join(System, "ssh_host_rsa_key.pub")),
+                ssh_test_lib:setup_rsa_known_host(DataDir, UserDir),
+                ssh_test_lib:setup_rsa_auth_keys(DataDir, UserDir)
+            end,
+            Config;
+	false ->
+	    {skip, unsupported_pub_key}
+    end;
 init_per_group(ecdsa_sha2_nistp256_key, Config) ->
     case lists:member('ecdsa-sha2-nistp256',
 		      ssh_transport:default_algorithms(public_key)) of
@@ -304,7 +332,8 @@ init_per_group(internal_error, Config) ->
     DataDir = proplists:get_value(data_dir, Config),
     PrivDir = proplists:get_value(priv_dir, Config),
     ssh_test_lib:setup_dsa(DataDir, PrivDir),
-    file:delete(filename:join(PrivDir, "system/ssh_host_dsa_key")),
+    %% In the test case the key will be deleted after the daemon start:
+    %% ... file:delete(filename:join(PrivDir, "system/ssh_host_dsa_key")),
     Config;
 init_per_group(dir_options, Config) ->
     PrivDir = proplists:get_value(priv_dir, Config),
@@ -868,12 +897,17 @@ key_callback_options(Config) when is_list(Config) ->
 %%% Test that client does not hang if disconnects due to internal error
 internal_error(Config) when is_list(Config) ->
     process_flag(trap_exit, true),
-    SystemDir = filename:join(proplists:get_value(priv_dir, Config), system),
+    PrivDir = proplists:get_value(priv_dir, Config),
     UserDir = proplists:get_value(priv_dir, Config),
+    SystemDir = filename:join(PrivDir, system),
     
     {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
                                              {user_dir, UserDir},
                                              {failfun, fun ssh_test_lib:failfun/2}]),
+
+    %% Now provoke an error in the following connect:
+    file:delete(filename:join(PrivDir, "system/ssh_host_dsa_key")), 
+
     {error, Error} =
         ssh:connect(Host, Port, [{silently_accept_hosts, true},
                                  {user_dir, UserDir},
@@ -902,6 +936,17 @@ send(Config) when is_list(Config) ->
 
 
 %%--------------------------------------------------------------------
+%%%
+fail_daemon_start(Config) when is_list(Config) ->
+    process_flag(trap_exit, true),
+    SystemDir = filename:join(proplists:get_value(priv_dir, Config), system),
+    UserDir = proplists:get_value(priv_dir, Config),
+
+    {error,_} = ssh_test_lib:daemon([{system_dir, SystemDir},
+                                     {user_dir, UserDir},
+                                     {failfun, fun ssh_test_lib:failfun/2}]).
+
+%%--------------------------------------------------------------------
 %%% Test ssh:connection_info([peername, sockname])
 peername_sockname(Config) when is_list(Config) ->
     process_flag(trap_exit, true),
@@ -1300,14 +1345,11 @@ shell_exit_status(Config) when is_list(Config) ->
 %%--------------------------------------------------------------------
 %% Due to timing the error message may or may not be delivered to
 %% the "tcp-application" before the socket closed message is recived
-check_error("Invalid state") ->
-    ok;
-check_error("Connection closed") ->
-    ok;
-check_error("Selection of key exchange algorithm failed"++_) ->
-    ok;
-check_error(Error) ->
-    ct:fail(Error).
+check_error("Invalid state") -> ok;
+check_error("Connection closed") -> ok;
+check_error("Selection of key exchange algorithm failed"++_) -> ok;
+check_error("No host key available") -> ok;
+check_error(Error) -> ct:fail(Error).
 
 basic_test(Config) ->
     ClientOpts = proplists:get_value(client_opts, Config),
diff --git a/lib/ssh/test/ssh_bench_SUITE.erl b/lib/ssh/test/ssh_bench_SUITE.erl
index cd0fe23f4a..b6c6147646 100644
--- a/lib/ssh/test/ssh_bench_SUITE.erl
+++ b/lib/ssh/test/ssh_bench_SUITE.erl
@@ -57,7 +57,6 @@ init_per_suite(Config) ->
         ok ->
             DataSize = 1000000,
             SystemDir = proplists:get_value(data_dir, Config),
-%%%            Algs = insert_none(ssh:default_algorithms()),
             Algs = ssh:default_algorithms(),
             {_ServerPid, _Host, Port} =
                 ssh_test_lib:daemon([{system_dir, SystemDir},
@@ -65,7 +64,12 @@ init_per_suite(Config) ->
                                      {failfun, fun ssh_test_lib:failfun/2},
                                      {preferred_algorithms, Algs},
                                      {modify_algorithms,[{prepend,[{cipher,[none]},
-                                                                   {mac,[none]}]}]},
+                                                                   {mac,[none]}
+                                                                  ]},
+                                                         {rm, [{cipher,['[email protected]',
+                                                                        '[email protected]']}
+                                                              ]}
+                                                        ]},
                                      {max_random_length_padding, 0},
                                      {subsystems, [{"/dev/null", {ssh_bench_dev_null,[DataSize]}}]}
                                     ]),
@@ -178,19 +182,30 @@ gen_data(DataSz) ->
 %%              {suite, ?MODULE},
 %%              {name, mk_name(["Transfer 1M bytes ",Cipher,"/",Mac," [µs]"])}]);
 connect_measure(Port, Cipher, Mac, Data, Options) ->
+    AES_GCM = {cipher,['[email protected]',
+                       '[email protected]']},
+
     AlgOpt = case {Cipher,Mac} of
                  {none,none} ->
                      [{modify_algorithms,[{prepend, [{cipher,[Cipher]},
-                                                     {mac,[Mac]}]}]}];
+                                                     {mac,[Mac]}]},
+                                          {rm,[AES_GCM]}
+                                         ]}];
                  {none,_} ->
-                     [{modify_algorithms,[{prepend, [{cipher,[Cipher]}]}]},
+                     [{modify_algorithms,[{prepend, [{cipher,[Cipher]}]},
+                                          {rm,[AES_GCM]}
+                                         ]},
                       {preferred_algorithms, [{mac,[Mac]}]}];
                  {_,none} ->
-                     [{modify_algorithms,[{prepend, [{mac,[Mac]}]}]},
+                     [{modify_algorithms,[{prepend, [{mac,[Mac]}]},
+                                          {rm,[AES_GCM]}
+                                         ]},
                       {preferred_algorithms, [{cipher,[Cipher]}]}];
                  _ ->
                      [{preferred_algorithms, [{cipher,[Cipher]},
-                                              {mac,[Mac]}]}]
+                                              {mac,[Mac]}]},
+                      {modify_algorithms, [{rm,[AES_GCM]}]}
+                     ]
              end,
     Times =
         [begin
@@ -220,16 +235,6 @@ send_wait_acc(C, Ch, Data) ->
 %%% 
 
 %%%----------------------------------------------------------------
-insert_none(L) ->
-    lists:foldl(fun insert_none/2, [], L).
-
-insert_none({T,L}, Acc) when T==cipher ;
-                             T==mac    ->
-    [{T, [{T1,L1++[none]} || {T1,L1} <- L]} | Acc];
-insert_none(_, Acc) ->
-    Acc.
-
-%%%----------------------------------------------------------------
 mk_name(Name) -> [char(C) || C <- lists:concat(Name)].
 
 char($-) -> $_;
diff --git a/lib/ssh/test/ssh_engine_SUITE.erl b/lib/ssh/test/ssh_engine_SUITE.erl
new file mode 100644
index 0000000000..daf93891e9
--- /dev/null
+++ b/lib/ssh/test/ssh_engine_SUITE.erl
@@ -0,0 +1,140 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2008-2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+
+-module(ssh_engine_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+-include("ssh_test_lib.hrl").
+
+%% Note: This directive should only be used in test suites.
+-compile(export_all).
+
+%%--------------------------------------------------------------------
+%% Common Test interface functions -----------------------------------
+%%--------------------------------------------------------------------
+
+suite() ->
+    [{ct_hooks,[ts_install_cth]},
+     {timetrap,{seconds,40}}].
+
+all() -> 
+    [{group, dsa_key},
+     {group, rsa_key}
+    ].
+
+groups() ->
+    [{dsa_key, [], basic_tests()},
+     {rsa_key, [], basic_tests()}
+    ].
+
+basic_tests() ->
+    [simple_connect
+    ].
+
+
+%%--------------------------------------------------------------------
+init_per_suite(Config) ->
+    ssh:start(),
+    ?CHECK_CRYPTO(
+       case load_engine() of
+           {ok,E} -> 
+               [{engine,E}|Config];
+           {error, notsup} ->
+               {skip, "Engine not supported on this OpenSSL version"};
+           {error, bad_engine_id} ->
+               {skip, "Dynamic Engine not supported"};
+           Other ->
+               ct:log("Engine load failed: ~p",[Other]),
+               {fail, "Engine load failed"}
+       end
+      ).
+
+end_per_suite(Config) ->
+    catch crypto:engine_unload( proplists:get_value(engine,Config) ),
+    ssh:stop().
+
+%%--------------------------------------------------------------------
+init_per_group(dsa_key, Config) ->
+    case lists:member('ssh-dss',
+		      ssh_transport:default_algorithms(public_key)) of
+	true ->
+            start_daemon(Config, 'ssh-dss', "dsa_private_key.pem");
+	false ->
+	    {skip, unsupported_pub_key}
+    end;
+init_per_group(rsa_key, Config) ->
+    case lists:member('ssh-rsa',
+		      ssh_transport:default_algorithms(public_key)) of
+	true ->
+            start_daemon(Config, 'ssh-rsa', "rsa_private_key.pem");
+	false ->
+	    {skip, unsupported_pub_key}
+    end.
+
+start_daemon(Config, KeyType, KeyId) ->
+    SystemDir = proplists:get_value(data_dir, Config),
+    FullKeyId = filename:join(SystemDir, KeyId),
+    KeyCBOpts = [{engine, proplists:get_value(engine,Config)},
+                 {KeyType, FullKeyId}
+                ],
+    Opts = [{key_cb, {ssh_key_cb_engine_keys, KeyCBOpts}}],
+    {Pid, Host, Port} = ssh_test_lib:std_daemon(Config, Opts),
+    [{host_port,{Host,Port}}, {daemon_pid,Pid}| Config].
+
+
+end_per_group(_, Config) ->
+    catch ssh:stop_daemon(proplists:get_value(daemon_pid,Config)),
+    Config.
+
+%%--------------------------------------------------------------------
+%% Test Cases --------------------------------------------------------
+%%--------------------------------------------------------------------
+
+%% A simple exec call
+simple_connect(Config) ->
+    {Host,Port} = proplists:get_value(host_port, Config),
+    CRef = ssh_test_lib:std_connect(Config, Host, Port, []),
+    ssh:close(CRef).
+
+%%--------------------------------------------------------------------
+%%--------------------------------------------------------------------
+load_engine() ->
+    case crypto:get_test_engine() of
+        {ok, Engine} ->
+            try crypto:engine_load(<<"dynamic">>,
+                                   [{<<"SO_PATH">>, Engine},
+                                    <<"LOAD">>],
+                                   [])
+            catch
+                error:notsup ->
+                    {error, notsup}
+            end;
+
+        {error, Error} ->
+            {error, Error}
+    end.
+
+start_std_daemon(Opts, Config) ->
+    ct:log("starting std_daemon",[]),
+    {Pid, Host, Port} = ssh_test_lib:std_daemon(Config, Opts),
+    ct:log("started ~p:~p  ~p",[Host,Port,Opts]),
+    [{srvr_pid,Pid},{srvr_addr,{Host,Port}} | Config].
diff --git a/lib/ssh/test/ssh_engine_SUITE_data/dsa_private_key.pem b/lib/ssh/test/ssh_engine_SUITE_data/dsa_private_key.pem
new file mode 100644
index 0000000000..778ffac675
--- /dev/null
+++ b/lib/ssh/test/ssh_engine_SUITE_data/dsa_private_key.pem
@@ -0,0 +1,9 @@
+-----BEGIN PRIVATE KEY-----
+MIIBSwIBADCCASwGByqGSM44BAEwggEfAoGBAMyitTMR7vPbpqyAXJpqnB0AhFwQ
+F87IE+JKFl5bD/MSkhhRV5sM73HUU1ooXY0FjhZ+cdLUCATuZR5ta4ydANqWIcAB
+gX3IwF1B4zf5SXEKTWkUYneL9dOKtiZLtoG28swrk8xMxwX+0fLHkltCEj6FiTW9
+PFrv8GmIfV6DjcI9AhUAqXWbb3RtoN9Ld28fVMhGZrj3LJUCgYEAwnxGHGBMpJaF
+2w7zAw3jHjL8PMYlV6vnufGHQlwF0ZUXJxRsvagMb/X1qACTu2VPYEVoLQGM3cfH
+EhHoQmvSXGAyTfR7Bmn3gf1n/s/DcFbdZduUCZ/rAyIrfd0eSbc1I+kZk85UCsKK
+w/IYdlqcuYa4Cgm2TapT5uEMqH4jhzEEFgIULh8swEUWmU8aJNWsrWl4eCiuUUg=
+-----END PRIVATE KEY-----
diff --git a/lib/ssh/test/ssh_engine_SUITE_data/ecdsa_private_key.pem b/lib/ssh/test/ssh_engine_SUITE_data/ecdsa_private_key.pem
new file mode 100644
index 0000000000..a45522064f
--- /dev/null
+++ b/lib/ssh/test/ssh_engine_SUITE_data/ecdsa_private_key.pem
@@ -0,0 +1,8 @@
+-----BEGIN PRIVATE KEY-----
+MIHuAgEAMBAGByqGSM49AgEGBSuBBAAjBIHWMIHTAgEBBEIBparGjr0KcdNrVM2J
+G0mW5ltP1QyvxDqBMyWLWo3fruRZv6Qoohl5skd1u4O+KJoM/UrrSTOXI/MDR7NN
+i1yl7O+hgYkDgYYABAG8K2XVsK0ahG9+HIIPwCO0pJY8ulwSTXwIjkCGyB2lpglh
+8qJmRzuyGcfRTslv8wfv0sPlT9H9PKDvgrTUL7rvQQDdOODNgVPXSecUoXoPn+X+
+eqxs77bjx+A5x0t/i3m5PfkaNPh5MZ1H/bWuOOdj2ZXZw0R4rlVc0zVrgnPU8L8S
+BQ==
+-----END PRIVATE KEY-----
diff --git a/lib/ssh/test/ssh_engine_SUITE_data/rsa_private_key.pem b/lib/ssh/test/ssh_engine_SUITE_data/rsa_private_key.pem
new file mode 100644
index 0000000000..ea0e3d3958
--- /dev/null
+++ b/lib/ssh/test/ssh_engine_SUITE_data/rsa_private_key.pem
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/lib/ssh/test/ssh_engine_SUITE_data/rsa_private_key_pwd.pem b/lib/ssh/test/ssh_engine_SUITE_data/rsa_private_key_pwd.pem
new file mode 100644
index 0000000000..501662fc35
--- /dev/null
+++ b/lib/ssh/test/ssh_engine_SUITE_data/rsa_private_key_pwd.pem
@@ -0,0 +1,30 @@
+-----BEGIN ENCRYPTED PRIVATE KEY-----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+-----END ENCRYPTED PRIVATE KEY-----
diff --git a/lib/ssh/test/ssh_key_cb_engine_keys.erl b/lib/ssh/test/ssh_key_cb_engine_keys.erl
new file mode 100644
index 0000000000..fc9cbfd49b
--- /dev/null
+++ b/lib/ssh/test/ssh_key_cb_engine_keys.erl
@@ -0,0 +1,62 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2015-2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+%%----------------------------------------------------------------------
+
+%% Note: This module is used by ssh_basic_SUITE
+
+-module(ssh_key_cb_engine_keys).
+-behaviour(ssh_server_key_api).
+-compile(export_all).
+
+host_key(SshAlg, Options) ->
+    KBopts = proplists:get_value(key_cb_private, Options, []),
+    Engine = proplists:get_value(engine, KBopts),
+    case proplists:get_value(SshAlg, KBopts) of
+        undefined ->
+            {error, {unknown_alg,SshAlg}};
+        KeyId ->
+            case crypto_alg(SshAlg) of
+                undefined ->
+                    {error, {unsupported_alg,SshAlg}};
+                CryptoAlg ->
+                    PrivKey = #{engine => Engine,
+                                key_id => KeyId,
+                                algorithm => CryptoAlg},
+                    %% Is there a key with this reference ?
+                    case crypto:privkey_to_pubkey(CryptoAlg, PrivKey) of
+                        [_|_] -> 
+                            {ok, PrivKey};
+                        _ ->
+                            {error, {no_hostkey,SshAlg}}
+                    end
+            end
+    end.
+
+is_auth_key(_PublicUserKey, _User, _Options) ->
+    false.
+
+
+
+crypto_alg('ssh-rsa') -> rsa;
+crypto_alg('ssh-dss') -> dss;
+crypto_alg(_) -> undefined.
+    
diff --git a/lib/ssh/test/ssh_options_SUITE.erl b/lib/ssh/test/ssh_options_SUITE.erl
index 8b454ffe5d..144ec7f8fd 100644
--- a/lib/ssh/test/ssh_options_SUITE.erl
+++ b/lib/ssh/test/ssh_options_SUITE.erl
@@ -36,7 +36,9 @@
 	 id_string_no_opt_client/1, 
 	 id_string_no_opt_server/1, 
 	 id_string_own_string_client/1, 
+	 id_string_own_string_client_trail_space/1, 
 	 id_string_own_string_server/1, 
+	 id_string_own_string_server_trail_space/1, 
 	 id_string_random_client/1, 
 	 id_string_random_server/1, 
 	 max_sessions_sftp_start_channel_parallel/1, 
@@ -116,9 +118,11 @@ all() ->
      hostkey_fingerprint_check_list,
      id_string_no_opt_client,
      id_string_own_string_client,
+     id_string_own_string_client_trail_space,
      id_string_random_client,
      id_string_no_opt_server,
      id_string_own_string_server,
+     id_string_own_string_server_trail_space,
      id_string_random_server,
      {group, hardening_tests}
     ].
@@ -1035,6 +1039,19 @@ id_string_own_string_client(Config) ->
     end.
 
 %%--------------------------------------------------------------------
+id_string_own_string_client_trail_space(Config) ->
+    {Server, _Host, Port} = fake_daemon(Config),
+    {error,_} = ssh:connect("localhost", Port, [{id_string,"Pelle "}], 1000),
+    receive
+	{id,Server,"SSH-2.0-Pelle \r\n"} ->
+	    ok;
+	{id,Server,Other} ->
+	    ct:fail("Unexpected id: ~s.",[Other])
+    after 5000 ->
+	    {fail,timeout}
+    end.
+
+%%--------------------------------------------------------------------
 id_string_random_client(Config) ->
     {Server, _Host, Port} = fake_daemon(Config),
     {error,_} = ssh:connect("localhost", Port, [{id_string,random}], 1000),
@@ -1063,6 +1080,12 @@ id_string_own_string_server(Config) ->
     {ok,"SSH-2.0-Olle\r\n"} = gen_tcp:recv(S1, 0, 2000).
 
 %%--------------------------------------------------------------------
+id_string_own_string_server_trail_space(Config) ->
+    {_Server, Host, Port} = ssh_test_lib:std_daemon(Config, [{id_string,"Olle "}]),
+    {ok,S1}=ssh_test_lib:gen_tcp_connect(Host,Port,[{active,false},{packet,line}]),
+    {ok,"SSH-2.0-Olle \r\n"} = gen_tcp:recv(S1, 0, 2000).
+
+%%--------------------------------------------------------------------
 id_string_random_server(Config) ->
     {_Server, Host, Port} = ssh_test_lib:std_daemon(Config, [{id_string,random}]),
     {ok,S1}=ssh_test_lib:gen_tcp_connect(Host,Port,[{active,false},{packet,line}]),
diff --git a/lib/ssh/test/ssh_protocol_SUITE.erl b/lib/ssh/test/ssh_protocol_SUITE.erl
index 7da921adb2..3e3e151781 100644
--- a/lib/ssh/test/ssh_protocol_SUITE.erl
+++ b/lib/ssh/test/ssh_protocol_SUITE.erl
@@ -630,11 +630,12 @@ client_handles_keyboard_interactive_0_pwds(Config) ->
 
 
 %%%--------------------------------------------------------------------
-client_info_line(_Config) ->
+client_info_line(Config) ->
     %% A client must not send an info-line. If it does, the server should handle
     %% handle this gracefully
     {ok,Pid} = ssh_eqc_event_handler:add_report_handler(),
-    {_, _, Port} = ssh_test_lib:daemon([]),
+    DataDir = proplists:get_value(data_dir, Config),
+    {_, _, Port} = ssh_test_lib:daemon([{system_dir,DataDir}]),
 
     %% Fake client:
     {ok,S} = gen_tcp:connect("localhost",Port,[]),
@@ -884,9 +885,9 @@ chk_pref_algs(Config,
 
 filter_supported(K, Algs) -> Algs -- (Algs--supported(K)).
 
-supported(K) -> proplists:get_value(
-                  server2client,
-                  ssh_transport:supported_algorithms(cipher)).
+supported(_K) -> proplists:get_value(
+                   server2client,
+                   ssh_transport:supported_algorithms(cipher)).
 
 to_lists(L) -> lists:map(fun erlang:atom_to_list/1, L).
     
diff --git a/lib/ssh/test/ssh_to_openssh_SUITE.erl b/lib/ssh/test/ssh_to_openssh_SUITE.erl
index 4d6aa93d4e..75d5b5e296 100644
--- a/lib/ssh/test/ssh_to_openssh_SUITE.erl
+++ b/lib/ssh/test/ssh_to_openssh_SUITE.erl
@@ -332,7 +332,7 @@ erlang_client_openssh_server_publickey_dsa(Config) ->
     erlang_client_openssh_server_publickey_X(Config, 'ssh-dss').
 
 
-erlang_client_openssh_server_publickey_X(Config, Alg) ->
+erlang_client_openssh_server_publickey_X(_Config, Alg) ->
     ConnectionRef =
         ssh_test_lib:connect(?SSH_DEFAULT_PORT,
                              [{pref_public_key_algs, [Alg]},
diff --git a/lib/ssh/vsn.mk b/lib/ssh/vsn.mk
index 5154658e8a..004db6e3a2 100644
--- a/lib/ssh/vsn.mk
+++ b/lib/ssh/vsn.mk
@@ -1,5 +1,5 @@
 #-*-makefile-*-   ; force emacs to enter makefile-mode
 
-SSH_VSN = 4.6.1
+SSH_VSN = 4.6.4
 
 APP_VSN    = "ssh-$(SSH_VSN)"
diff --git a/lib/ssl/doc/src/Makefile b/lib/ssl/doc/src/Makefile
index 669062779e..f9128e8e45 100644
--- a/lib/ssl/doc/src/Makefile
+++ b/lib/ssl/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 1999-2015. All Rights Reserved.
+# Copyright Ericsson AB 1999-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -38,25 +38,25 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN)
 # Target Specs
 # ----------------------------------------------------
 XML_APPLICATION_FILES = refman.xml
-XML_REF3_FILES = ssl.xml ssl_crl_cache.xml ssl_crl_cache_api.xml ssl_session_cache_api.xml 
+XML_REF3_FILES = ssl.xml ssl_crl_cache.xml ssl_crl_cache_api.xml ssl_session_cache_api.xml
 XML_REF6_FILES = ssl_app.xml
 
-XML_PART_FILES = release_notes.xml usersguide.xml
+XML_PART_FILES = usersguide.xml
 XML_CHAPTER_FILES = \
+	ssl_introduction.xml \
 	ssl_protocol.xml \
 	using_ssl.xml \
-	pkix_certs.xml \
 	ssl_distribution.xml \
 	notes.xml
 
 BOOK_FILES = book.xml
 
 XML_FILES = $(BOOK_FILES) $(XML_APPLICATION_FILES) $(XML_REF3_FILES) $(XML_REF6_FILES) \
-            $(XML_PART_FILES) $(XML_CHAPTER_FILES) 
+            $(XML_PART_FILES) $(XML_CHAPTER_FILES)
 
-GIF_FILES = warning.gif
+GIF_FILES =
 
-PS_FILES = 
+PS_FILES =
 
 XML_FLAGS += -defs cite cite.defs -booksty otpA4
 
@@ -81,10 +81,10 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -110,11 +110,11 @@ man: $(MAN3_FILES) $(MAN6_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/ssl/doc/src/fascicules.xml b/lib/ssl/doc/src/fascicules.xml
deleted file mode 100644
index 7a60e8dd1f..0000000000
--- a/lib/ssl/doc/src/fascicules.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="usersguide" href="usersguide_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="refman" href="refman_frame.html" entry="yes">
-    Reference  Manual
-  </fascicule>
-  <fascicule file="release_notes" href="release_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
-
diff --git a/lib/ssl/doc/src/note.gif b/lib/ssl/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/ssl/doc/src/note.gif
+++ /dev/null
diff --git a/lib/ssl/doc/src/notes.xml b/lib/ssl/doc/src/notes.xml
index 4c6a204e63..79176f5edf 100644
--- a/lib/ssl/doc/src/notes.xml
+++ b/lib/ssl/doc/src/notes.xml
@@ -27,6 +27,136 @@
   </header>
   <p>This document describes the changes made to the SSL application.</p>
 
+<section><title>SSL 8.2.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Packet options cannot be supported for unreliable
+	    transports, that is, packet option for DTLS over udp will
+	    not be supported.</p>
+          <p>
+	    Own Id: OTP-14664</p>
+        </item>
+        <item>
+          <p>
+	    Ensure data delivery before close if possible. This fix
+	    is related to fix in PR-1479.</p>
+          <p>
+	    Own Id: OTP-14794</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    The crypto API is extended to use private/public keys
+	    stored in an Engine for sign/verify or encrypt/decrypt
+	    operations.</p>
+          <p>
+	    The ssl application provides an API to use this new
+	    engine concept in TLS.</p>
+          <p>
+	    Own Id: OTP-14448</p>
+        </item>
+        <item>
+          <p>
+	    Implemented renegotiation for DTLS</p>
+          <p>
+	    Own Id: OTP-14563</p>
+        </item>
+        <item>
+          <p>
+	    A new command line option <c>-ssl_dist_optfile</c> has
+	    been added to facilitate specifying the many options
+	    needed when using SSL as the distribution protocol.</p>
+          <p>
+	    Own Id: OTP-14657</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>SSL 8.2.2</title>
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    TLS sessions must be registered with SNI if provided, so
+	    that sessions where client hostname verification would
+	    fail can not connect reusing a session created when the
+	    server name verification succeeded.</p>
+          <p>
+	    Own Id: OTP-14632</p>
+        </item>
+        <item>
+	    <p> An erlang TLS server configured with cipher suites
+	    using rsa key exchange, may be vulnerable to an Adaptive
+	    Chosen Ciphertext attack (AKA Bleichenbacher attack)
+	    against RSA, which when exploited, may result in
+	    plaintext recovery of encrypted messages and/or a
+	    Man-in-the-middle (MiTM) attack, despite the attacker not
+	    having gained access to the server’s private key
+	    itself. <url
+	    href="https://nvd.nist.gov/vuln/detail/CVE-2017-1000385">CVE-2017-1000385</url>
+	    </p> <p> Exploiting this vulnerability to perform
+	    plaintext recovery of encrypted messages will, in most
+	    practical cases, allow an attacker to read the plaintext
+	    only after the session has completed. Only TLS sessions
+	    established using RSA key exchange are vulnerable to this
+	    attack. </p> <p> Exploiting this vulnerability to conduct
+	    a MiTM attack requires the attacker to complete the
+	    initial attack, which may require thousands of server
+	    requests, during the handshake phase of the targeted
+	    session within the window of the configured handshake
+	    timeout. This attack may be conducted against any TLS
+	    session using RSA signatures, but only if cipher suites
+	    using RSA key exchange are also enabled on the server.
+	    The limited window of opportunity, limitations in
+	    bandwidth, and latency make this attack significantly
+	    more difficult to execute. </p> <p> RSA key exchange is
+	    enabled by default although least prioritized if server
+	    order is honored. For such a cipher suite to be chosen it
+	    must also be supported by the client and probably the
+	    only shared cipher suite. </p> <p> Captured TLS sessions
+	    encrypted with ephemeral cipher suites (DHE or ECDHE) are
+	    not at risk for subsequent decryption due to this
+	    vulnerability. </p> <p> As a workaround if default cipher
+	    suite configuration was used you can configure the server
+	    to not use vulnerable suites with the ciphers option like
+	    this: </p> <c> {ciphers, [Suite || Suite &lt;-
+	    ssl:cipher_suites(), element(1,Suite) =/= rsa]} </c> <p>
+	    that is your code will look somethingh like this: </p>
+	    <c> ssl:listen(Port, [{ciphers, [Suite || Suite &lt;-
+	    ssl:cipher_suites(), element(1,S) =/= rsa]} | Options]).
+	    </c> <p> Thanks to Hanno Böck, Juraj Somorovsky and
+	    Craig Young for reporting this vulnerability. </p>
+          <p>
+	    Own Id: OTP-14748</p>
+        </item>
+      </list>
+    </section>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    If no SNI is available and the hostname is an IP-address
+	    also check for IP-address match. This check is not as
+	    good as a DNS hostname check and certificates using
+	    IP-address are not recommended.</p>
+          <p>
+	    Own Id: OTP-14655</p>
+        </item>
+      </list>
+    </section>
+
+</section>
 
 <section><title>SSL 8.2.1</title>
 
@@ -175,9 +305,59 @@
         </item>
       </list>
     </section>
-
 </section>
 
+<section><title>SSL 8.1.3.1</title>
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> An erlang TLS server configured with cipher suites
+	    using rsa key exchange, may be vulnerable to an Adaptive
+	    Chosen Ciphertext attack (AKA Bleichenbacher attack)
+	    against RSA, which when exploited, may result in
+	    plaintext recovery of encrypted messages and/or a
+	    Man-in-the-middle (MiTM) attack, despite the attacker not
+	    having gained access to the server’s private key
+	    itself. <url
+	    href="https://nvd.nist.gov/vuln/detail/CVE-2017-1000385">CVE-2017-1000385</url>
+	    </p> <p> Exploiting this vulnerability to perform
+	    plaintext recovery of encrypted messages will, in most
+	    practical cases, allow an attacker to read the plaintext
+	    only after the session has completed. Only TLS sessions
+	    established using RSA key exchange are vulnerable to this
+	    attack. </p> <p> Exploiting this vulnerability to conduct
+	    a MiTM attack requires the attacker to complete the
+	    initial attack, which may require thousands of server
+	    requests, during the handshake phase of the targeted
+	    session within the window of the configured handshake
+	    timeout. This attack may be conducted against any TLS
+	    session using RSA signatures, but only if cipher suites
+	    using RSA key exchange are also enabled on the server.
+	    The limited window of opportunity, limitations in
+	    bandwidth, and latency make this attack significantly
+	    more difficult to execute. </p> <p> RSA key exchange is
+	    enabled by default although least prioritized if server
+	    order is honored. For such a cipher suite to be chosen it
+	    must also be supported by the client and probably the
+	    only shared cipher suite. </p> <p> Captured TLS sessions
+	    encrypted with ephemeral cipher suites (DHE or ECDHE) are
+	    not at risk for subsequent decryption due to this
+	    vulnerability. </p> <p> As a workaround if default cipher
+	    suite configuration was used you can configure the server
+	    to not use vulnerable suites with the ciphers option like
+	    this: </p> <c> {ciphers, [Suite || Suite &lt;-
+	    ssl:cipher_suites(), element(1,Suite) =/= rsa]} </c> <p>
+	    that is your code will look somethingh like this: </p>
+	    <c> ssl:listen(Port, [{ciphers, [Suite || Suite &lt;-
+	    ssl:cipher_suites(), element(1,S) =/= rsa]} | Options]).
+	    </c> <p> Thanks to Hanno Böck, Juraj Somorovsky and
+	    Craig Young for reporting this vulnerability. </p>
+          <p>
+	    Own Id: OTP-14748</p>
+        </item>
+      </list>
+    </section>
+</section>
 <section><title>SSL 8.1.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -556,6 +736,60 @@
 
 </section>
 
+ <section><title>SSL 7.3.3.2</title>
+
+      <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+	<item>
+	  <p> An erlang TLS server configured with cipher suites
+	  using rsa key exchange, may be vulnerable to an Adaptive
+	  Chosen Ciphertext attack (AKA Bleichenbacher attack)
+	  against RSA, which when exploited, may result in
+	  plaintext recovery of encrypted messages and/or a
+	  Man-in-the-middle (MiTM) attack, despite the attacker not
+	  having gained access to the server’s private key
+	  itself. <url
+	  href="https://nvd.nist.gov/vuln/detail/CVE-2017-1000385">CVE-2017-1000385</url>
+	  </p> <p> Exploiting this vulnerability to perform
+	  plaintext recovery of encrypted messages will, in most
+	  practical cases, allow an attacker to read the plaintext
+	  only after the session has completed. Only TLS sessions
+	  established using RSA key exchange are vulnerable to this
+	  attack. </p> <p> Exploiting this vulnerability to conduct
+	  a MiTM attack requires the attacker to complete the
+	  initial attack, which may require thousands of server
+	  requests, during the handshake phase of the targeted
+	  session within the window of the configured handshake
+	  timeout. This attack may be conducted against any TLS
+	  session using RSA signatures, but only if cipher suites
+	  using RSA key exchange are also enabled on the server.
+	  The limited window of opportunity, limitations in
+	  bandwidth, and latency make this attack significantly
+	  more difficult to execute. </p> <p> RSA key exchange is
+	  enabled by default although least prioritized if server
+	  order is honored. For such a cipher suite to be chosen it
+	  must also be supported by the client and probably the
+	  only shared cipher suite. </p> <p> Captured TLS sessions
+	  encrypted with ephemeral cipher suites (DHE or ECDHE) are
+	  not at risk for subsequent decryption due to this
+	  vulnerability. </p> <p> As a workaround if default cipher
+	  suite configuration was used you can configure the server
+	  to not use vulnerable suites with the ciphers option like
+	  this: </p> <c> {ciphers, [Suite || Suite &lt;-
+	  ssl:cipher_suites(), element(1,Suite) =/= rsa]} </c> <p>
+	  that is your code will look somethingh like this: </p>
+	  <c> ssl:listen(Port, [{ciphers, [Suite || Suite &lt;-
+	  ssl:cipher_suites(), element(1,S) =/= rsa]} | Options]).
+	  </c> <p> Thanks to Hanno Böck, Juraj Somorovsky and
+	  Craig Young for reporting this vulnerability. </p>
+	  <p>
+	  Own Id: OTP-14748</p>
+	</item>
+	    </list>
+      </section>
+      
+  </section>
+
 <section><title>SSL 7.3.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
@@ -585,7 +819,59 @@
       </list>
     </section>
 
+ <section><title>SSL 7.3.3.0.1</title>
 
+      <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+	<item>
+	  <p> An erlang TLS server configured with cipher suites
+	  using rsa key exchange, may be vulnerable to an Adaptive
+	  Chosen Ciphertext attack (AKA Bleichenbacher attack)
+	  against RSA, which when exploited, may result in
+	  plaintext recovery of encrypted messages and/or a
+	  Man-in-the-middle (MiTM) attack, despite the attacker not
+	  having gained access to the server’s private key
+	  itself. <url
+	  href="https://nvd.nist.gov/vuln/detail/CVE-2017-1000385">CVE-2017-1000385</url>
+	  </p> <p> Exploiting this vulnerability to perform
+	  plaintext recovery of encrypted messages will, in most
+	  practical cases, allow an attacker to read the plaintext
+	  only after the session has completed. Only TLS sessions
+	  established using RSA key exchange are vulnerable to this
+	  attack. </p> <p> Exploiting this vulnerability to conduct
+	  a MiTM attack requires the attacker to complete the
+	  initial attack, which may require thousands of server
+	  requests, during the handshake phase of the targeted
+	  session within the window of the configured handshake
+	  timeout. This attack may be conducted against any TLS
+	  session using RSA signatures, but only if cipher suites
+	  using RSA key exchange are also enabled on the server.
+	  The limited window of opportunity, limitations in
+	  bandwidth, and latency make this attack significantly
+	  more difficult to execute. </p> <p> RSA key exchange is
+	  enabled by default although least prioritized if server
+	  order is honored. For such a cipher suite to be chosen it
+	  must also be supported by the client and probably the
+	  only shared cipher suite. </p> <p> Captured TLS sessions
+	  encrypted with ephemeral cipher suites (DHE or ECDHE) are
+	  not at risk for subsequent decryption due to this
+	  vulnerability. </p> <p> As a workaround if default cipher
+	  suite configuration was used you can configure the server
+	  to not use vulnerable suites with the ciphers option like
+	  this: </p> <c> {ciphers, [Suite || Suite &lt;-
+	  ssl:cipher_suites(), element(1,Suite) =/= rsa]} </c> <p>
+	  that is your code will look somethingh like this: </p>
+	  <c> ssl:listen(Port, [{ciphers, [Suite || Suite &lt;-
+	  ssl:cipher_suites(), element(1,S) =/= rsa]} | Options]).
+	  </c> <p> Thanks to Hanno Böck, Juraj Somorovsky and
+	  Craig Young for reporting this vulnerability. </p>
+	  <p>
+	  Own Id: OTP-14748</p>
+	</item>
+	    </list>
+      </section>
+      
+  </section>
     <section><title>Improvements and New Features</title>
       <list>
         <item>
diff --git a/lib/ssl/doc/src/pkix_certs.xml b/lib/ssl/doc/src/pkix_certs.xml
deleted file mode 100644
index f365acef4d..0000000000
--- a/lib/ssl/doc/src/pkix_certs.xml
+++ /dev/null
@@ -1,59 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE chapter SYSTEM "chapter.dtd">
-
-<chapter>
-  <header>
-    <copyright>
-      <year>2003</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>PKIX Certificates</title>
-    <prepared>UAB/F/P Peter H&ouml;gfeldt</prepared>
-    <docno></docno>
-    <date>2003-06-09</date>
-    <rev>A</rev>
-    <file>pkix_certs.xml</file>
-  </header>
-
-  <section>
-    <title>Introduction to Certificates</title>
-    <p>Certificates were originally defined by ITU (CCITT) and the latest 
-      definitions are described in <cite id="X.509"></cite>, but those definitions
-      are (as always) not working. 
-    </p>
-    <p>Working certificate definitions for the Internet Community are found
-      in the the PKIX RFCs <cite id="rfc3279"></cite> and <cite id="rfc3280"></cite>. 
-      The parsing of certificates in the Erlang/OTP SSL application is
-      based on those RFCS. 
-    </p>
-    <p>Certificates are defined in terms of ASN.1 (<cite id="X.680"></cite>).
-      For an introduction to ASN.1 see <url href="http://asn1.elibel.tm.fr/">ASN.1 Information Site</url>.
-    </p>    
-  </section>
-
-  <section>
-    <title>PKIX Certificates</title>
-    <p>Certificate handling is now handled by the <c>public_key</c> application.</p>
-    <p>
-      DER encoded certificates returned by <c>ssl:peercert/1</c> can for example 
-      be decoded by the <c>public_key:pkix_decode_cert/2</c> function. 
-    </p>
-  </section>
-</chapter>
-
-
diff --git a/lib/ssl/doc/src/release_notes.xml b/lib/ssl/doc/src/release_notes.xml
deleted file mode 100644
index 2e263c69a7..0000000000
--- a/lib/ssl/doc/src/release_notes.xml
+++ /dev/null
@@ -1,50 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>1999</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>SSL Release Notes</title>
-    <prepared>Peter H&ouml;gfeldt</prepared>
-    <docno></docno>
-    <date>2003-05-26</date>
-    <rev>A</rev>
-    <file>release_notes.sgml</file>
-  </header>
-  <description>
-    <p>The SSL application provides secure communication over sockets.
-      </p>
-    <p>This product includes software developed by the OpenSSL Project for
-      use in the OpenSSL Toolkit (http://www.openssl.org/).
-      </p>
-    <p>This product includes cryptographic software written by Eric Young
-      ([email protected]).  
-      </p>
-    <p>This product includes software written by Tim Hudson
-      ([email protected]).
-      </p>
-    <p>For full OpenSSL and SSLeay license texts, see <seealso marker="licenses#licenses">Licenses</seealso>.
-      </p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
-
diff --git a/lib/ssl/doc/src/ssl.xml b/lib/ssl/doc/src/ssl.xml
index ca2dcbb761..8fcda78ed5 100644
--- a/lib/ssl/doc/src/ssl.xml
+++ b/lib/ssl/doc/src/ssl.xml
@@ -69,7 +69,9 @@
 	<p><c>| {cert, public_key:der_encoded()}</c></p>
 	<p><c>| {certfile, path()}</c></p>
 	<p><c>| {key, {'RSAPrivateKey'| 'DSAPrivateKey' | 'ECPrivateKey' 
-	| 'PrivateKeyInfo', public_key:der_encoded()}}</c></p>
+	| 'PrivateKeyInfo', public_key:der_encoded()} |
+	#{algorithm := rsa | dss | ecdsa,
+	engine := crypto:engine_ref(), key_id := crypto:key_id(), password => crypto:password()}</c></p>
 	<p><c>| {keyfile, path()}</c></p>
 	<p><c>| {password, string()}</c></p>
 	<p><c>| {cacerts, [public_key:der_encoded()]}</c></p>
@@ -201,9 +203,15 @@
       <tag><c>{certfile, path()}</c></tag>
       <item><p>Path to a file containing the user certificate.</p></item>
       
-      <tag><c>{key, {'RSAPrivateKey'| 'DSAPrivateKey' | 'ECPrivateKey'
-      |'PrivateKeyInfo', public_key:der_encoded()}}</c></tag>
-      <item><p>The DER-encoded user's private key. If this option 
+      <tag>
+	<marker id="key_option_def"/>
+	<c>{key, {'RSAPrivateKey'| 'DSAPrivateKey' | 'ECPrivateKey'
+      |'PrivateKeyInfo', public_key:der_encoded()} |  #{algorithm := rsa | dss | ecdsa,
+	engine := crypto:engine_ref(), key_id :=  crypto:key_id(), password => crypto:password()}</c></tag>
+      <item><p>The DER-encoded user's private key or a map refering to a crypto
+      engine and its key reference that optionally can be password protected,
+      seealso <seealso marker="crypto:crypto#engine_load-4"> crypto:engine_load/4
+      </seealso> and  <seealso marker="crypto:engine_load"> Crypto's Users Guide</seealso>. If this option 
       is supplied, it overrides option <c>keyfile</c>.</p></item>
       
       <tag><c>{keyfile, path()}</c></tag>
@@ -589,22 +597,19 @@ fun(srp, Username :: string(), UserState :: term()) ->
 
       <tag><c>{server_name_indication, HostName :: hostname()}</c></tag>
       <item><p>Specify the hostname to be used in TLS Server Name Indication extension.
-      Is usefull when upgrading a TCP socket to a TLS socket or if the hostname can not be 
-      derived from the Host argument to <seealso marker="ssl#connect-3">ssl:connect/3</seealso>.
-      Will also cause the client to preform host name verification of the peer certificate
-      <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname(PeerCert, [{dns_id, HostName}])</seealso>
-      </p> during the x509-path validation. If the check fails the error {bad_cert, hostname_check_failiure} will be
-      propagated to the path validation fun <seealso marker="#verify_fun">verify_fun</seealso>
-      </item>
-
-	<tag><c>{server_name_indication, disable}</c></tag>
-      <item>
-        <p>When starting a TLS connection without upgrade, the Server Name
-        Indication extension is sent if possible that is can be derived from the Host argument 
-        to <seealso marker="ssl#connect-3">ssl:connect/3</seealso>.  
-	This option can be used to disable that behavior.</p>
-	<note><p> Note that this also disables the default host name verification check of the peer certificate.</p></note>
+      If not specified it will default to the <c>Host</c> argument of <seealso marker="#connect-3">connect/[3,4]</seealso>
+      unless it is of type inet:ipaddress().</p>
+      <p>
+	The <c>HostName</c> will also be used in the hostname verification of the peer certificate using
+	<seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso>.
+      </p>
       </item>
+      <tag><c>{server_name_indication, disable}</c></tag>
+	<item>
+          <p> Prevents the Server Name Indication extension from being sent and
+	  disables the hostname verification check
+	  <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> </p>
+	</item>
       <tag><c>{fallback, boolean()}</c></tag>
       <item>
 	<p> Send special cipher suite TLS_FALLBACK_SCSV to avoid undesired TLS version downgrade.
@@ -881,6 +886,12 @@ fun(srp, Username :: string(), UserState :: term()) ->
       <desc><p>Upgrades a <c>gen_tcp</c>, or equivalent,
 	  connected socket to an SSL socket, that is, performs the
 	  client-side ssl handshake.</p>
+	  
+	  <note><p>If the option <c>verify</c> is set to <c>verify_peer</c>
+	  the option <c>server_name_indication</c> shall also be specified,
+	  if it is not no Server Name Indication extension will be sent,
+	  and <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso>
+	  will be called with the IP-address of the connection as <c>ReferenceID</c>, which is proably not what you want.</p></note>
     </desc>
     </func>
 
@@ -897,7 +908,24 @@ fun(srp, Username :: string(), UserState :: term()) ->
 	  <v>SslSocket = sslsocket()</v>
 	  <v>Reason = term()</v>
       </type>
-      <desc><p>Opens an SSL connection to <c>Host</c>, <c>Port</c>.</p></desc>
+      <desc><p>Opens an SSL connection to <c>Host</c>, <c>Port</c>.</p>
+      
+      <p> When the option <c>verify</c> is set to <c>verify_peer</c> the check 
+      <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> 
+      will be performed in addition to the usual x509-path validation checks. If the check fails the error {bad_cert, hostname_check_failed} will
+      be propagated to the path validation fun <seealso marker="#verify_fun">verify_fun</seealso>, where it is possible to do customized
+      checks by using the full possibilitis of the <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> API.
+      
+      When the option <c>server_name_indication</c> is provided, its value (the DNS name) will be used as <c>ReferenceID</c>
+      to <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso>.
+      When no <c>server_name_indication</c> option is given, the <c>Host</c> argument will be used as
+      Server Name Indication extension. The <c>Host</c> argument will also be used for the
+      <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> check and if the <c>Host</c>
+      argument is an <c>inet:ip_address()</c> the <c>ReferenceID</c> used for the check will be <c>{ip, Host}</c> otherwise
+      <c>dns_id</c> will be assumed with a fallback to <c>ip</c> if that fails. </p>
+      <note><p>According to good practices certificates should not use IP-addresses as "server names". It would
+      be very surprising if this happen outside a closed network. </p></note> 
+      </desc>
     </func>
 
     <func>
diff --git a/lib/ssl/doc/src/ssl_distribution.xml b/lib/ssl/doc/src/ssl_distribution.xml
index 61f88e3860..7f8a08f704 100644
--- a/lib/ssl/doc/src/ssl_distribution.xml
+++ b/lib/ssl/doc/src/ssl_distribution.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>2000</year><year>2016</year>
+      <year>2000</year><year>2017</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -180,10 +180,96 @@ Eshell V5.0  (abort with ^G)
 
   <section>
     <title>Specifying SSL Options</title>
-    <p>For SSL to work, at least
-    a public key and a certificate must be specified for the server
-    side. In the following example, the PEM-files consist of two
-    entries, the server certificate and its private key.</p>
+
+    <p>
+      The SSL distribution options can be written into a file
+      that is consulted when the node is started.  This file name
+      is then specified with the command line argument
+      <c>-ssl_dist_optfile</c>.
+    </p>
+    <p>
+      Any available SSL option can be specified in an options file,
+      but note that options that take a <c>fun()</c> has to use
+      the syntax <c>fun Mod:Func/Arity</c> since a function
+      body can not be compiled when consulting a file.
+    </p>
+    <p>
+      Do not tamper with the socket options
+      <c>list</c>, <c>binary</c>, <c>active</c>, <c>packet</c>,
+      <c>nodelay</c> and <c>deliver</c> since they are used
+      by the distribution protocol handler itself.
+      Other raw socket options such as <c>packet_size</c> may
+      interfere severely, so beware!
+    </p>
+    <p>
+      For SSL to work, at least a public key and a certificate
+      must be specified for the server side.
+      In the following example, the PEM file
+      <c>"/home/me/ssl/erlserver.pem"</c> contains both
+      the server certificate and its private key.
+    </p>
+    <p>
+      Create a file named for example
+      <c>"/home/me/ssl/[email protected]"</c>:
+    </p>
+    <code type="none"><![CDATA[
+[{server,
+  [{certfile, "/home/me/ssl/erlserver.pem"},
+   {secure_renegotiate, true}]},
+ {client,
+  [{secure_renegotiate, true}]}].]]>
+    </code>
+    <p>
+      And then start the node like this
+      (line breaks in the command are for readability,
+      and shall not be there when typed):
+    </p>
+    <code type="none"><![CDATA[
+$ erl -boot /home/me/ssl/start_ssl -proto_dist inet_tls
+  -ssl_dist_optfile "/home/me/ssl/[email protected]"
+  -sname ssl_test]]>
+    </code>
+    <p>
+      The options in the <c>{server, Opts}</c> tuple are used
+      when calling <c>ssl:ssl_accept/3</c>, and the options in the
+      <c>{client, Opts}</c> tuple are used when calling
+      <c>ssl:connect/4</c>.
+    </p>
+    <p>
+      For the client, the option
+      <c>{server_name_indication, atom_to_list(TargetNode)}</c>
+      is added when connecting.
+      This makes it possible to use the client option
+      <c>{verify, verify_peer}</c>,
+      and the client will verify that the certificate matches
+      the node name you are connecting to.
+      This only works if the the server certificate is issued
+      to the name <c>atom_to_list(TargetNode)</c>.
+    </p>
+    <p>
+      For the server it is also possible to use the option
+      <c>{verify, verify_peer}</c> and the server will only accept
+      client connections with certificates that are trusted by
+      a root certificate that the server knows.
+      A client that presents an untrusted certificate will be rejected.
+      This option is preferably combined with
+      <c>{fail_if_no_peer_cert, true}</c> or a client will
+      still be accepted if it does not present any certificate.
+    </p>
+    <p>
+      A node started in this way is fully functional, using SSL
+      as the distribution protocol.
+    </p>
+  </section>
+
+  <section>
+    <title>Specifying SSL Options (Legacy)</title>
+
+    <p>
+      As in the previous section the PEM file
+      <c>"/home/me/ssl/erlserver.pem"</c> contains both
+      the server certificate and its private key.
+    </p>
 
     <p>On the <c>erl</c> command line you can specify options that the
     SSL distribution adds when creating a socket.</p>
@@ -226,24 +312,26 @@ Eshell V5.0  (abort with ^G)
     SSL options and their values. Argument <c>-ssl_dist_opt</c> can
     be repeated any number of times.</p>
 
-      <p>An example command line can now look as follows
+    <p>
+      An example command line doing the same as the example
+      in the previous section can now look as follows
       (line breaks in the command are for readability, 
-      and are not be there when typed):</p>
-    <code type="none">
+      and shall not be there when typed):
+    </p>
+    <code type="none"><![CDATA[
 $ erl -boot /home/me/ssl/start_ssl -proto_dist inet_tls
-  -ssl_dist_opt server_certfile "/home/me/ssl/erlserver.pem" 
+  -ssl_dist_opt server_certfile "/home/me/ssl/erlserver.pem"
   -ssl_dist_opt server_secure_renegotiate true client_secure_renegotiate true
   -sname ssl_test
 Erlang (BEAM) emulator version 5.0 [source]
- 
+
 Eshell V5.0  (abort with ^G)
-(ssl_test@myhost)1>     </code>
-    <p>A node started in this way is fully functional, using SSL
-      as the distribution protocol.</p>
+(ssl_test@myhost)1>]]>
+    </code>
   </section>
 
   <section>
-    <title>Setting up Environment to Always Use SSL</title>
+    <title>Setting up Environment to Always Use SSL (Legacy)</title>
     <p>A convenient way to specify arguments to Erlang is to use environment 
       variable <c>ERL_FLAGS</c>. All the flags needed to
       use the SSL distribution can be specified in that variable and are
@@ -285,15 +373,11 @@ Eshell V5.0  (abort with ^G)
     variable.</p>
 
     <p>An example command line with this option would look like this:</p>
-    <code type="none">
+    <code type="none"><![CDATA[
 $ erl -boot /home/me/ssl/start_ssl -proto_dist inet6_tls
-  -ssl_dist_opt server_certfile "/home/me/ssl/erlserver.pem"
-  -ssl_dist_opt server_secure_renegotiate true client_secure_renegotiate true
-  -sname ssl_test
-Erlang (BEAM) emulator version 5.0 [source]
-
-Eshell V5.0  (abort with ^G)
-(ssl_test@myhost)1>     </code>
+  -ssl_dist_optfile "/home/me/ssl/[email protected]"
+  -sname ssl_test]]>
+    </code>
 
     <p>A node started in this way will only be able to communicate with
     other nodes using SSL distribution over IPv6.</p>
diff --git a/lib/ssl/doc/src/warning.gif b/lib/ssl/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/ssl/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/ssl/src/dtls_connection.erl b/lib/ssl/src/dtls_connection.erl
index ae04167ec0..e5760e7951 100644
--- a/lib/ssl/src/dtls_connection.erl
+++ b/lib/ssl/src/dtls_connection.erl
@@ -39,20 +39,18 @@
 -export([start_fsm/8, start_link/7, init/1]).
 
 %% State transition handling	 
--export([next_record/1, next_event/3, next_event/4]).
+-export([next_record/1, next_event/3, next_event/4,  handle_common_event/4]).
 
 %% Handshake handling
--export([renegotiate/2, 
-	 reinit_handshake_data/1, 
-	 send_handshake/2, queue_handshake/2, queue_change_cipher/2,
-	 select_sni_extension/1, empty_connection_state/2]).
+-export([renegotiate/2, send_handshake/2, 
+         queue_handshake/2, queue_change_cipher/2,
+         reinit_handshake_data/1, select_sni_extension/1, empty_connection_state/2]).
 
 %% Alert and close handling
 -export([encode_alert/3,send_alert/2, close/5, protocol_name/0]).
 
 %% Data handling
-
--export([encode_data/3, passive_receive/2,  next_record_if_active/1, handle_common_event/4,
+-export([encode_data/3, passive_receive/2, next_record_if_active/1,
 	 send/3, socket/5, setopts/3, getopts/3]).
 
 %% gen_statem state functions
@@ -64,6 +62,9 @@
 
 %%====================================================================
 %% Internal application API
+%%====================================================================	
+%%====================================================================
+%% Setup
 %%====================================================================	     
 start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = false},_, Tracker} = Opts,
 	  User, {CbModule, _,_, _} = CbInfo, 
@@ -79,6 +80,218 @@ start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = false},_, Tracker}
 	    Error
     end.
 
+%%--------------------------------------------------------------------
+-spec start_link(atom(), host(), inet:port_number(), port(), list(), pid(), tuple()) ->
+			{ok, pid()} | ignore |  {error, reason()}.
+%%
+%% Description: Creates a gen_statem process which calls Module:init/1 to
+%% initialize.
+%%--------------------------------------------------------------------
+start_link(Role, Host, Port, Socket, Options, User, CbInfo) ->
+    {ok, proc_lib:spawn_link(?MODULE, init, [[Role, Host, Port, Socket, Options, User, CbInfo]])}.
+
+init([Role, Host, Port, Socket, Options,  User, CbInfo]) ->
+    process_flag(trap_exit, true),
+    State0 =  initial_state(Role, Host, Port, Socket, Options, User, CbInfo),
+    try
+	State = ssl_connection:ssl_config(State0#state.ssl_options, Role, State0),
+	gen_statem:enter_loop(?MODULE, [], init, State)
+    catch
+	throw:Error ->
+	    gen_statem:enter_loop(?MODULE, [], error, {Error,State0})
+    end.
+%%====================================================================
+%% State transition handling
+%%====================================================================	     
+next_record(#state{unprocessed_handshake_events = N} = State) when N > 0 ->
+    {no_record, State#state{unprocessed_handshake_events = N-1}};
+					 
+next_record(#state{protocol_buffers =
+		       #protocol_buffers{dtls_cipher_texts = [#ssl_tls{epoch = Epoch} = CT | Rest]}
+		   = Buffers,
+		   connection_states = #{current_read := #{epoch := Epoch}} = ConnectionStates} = State) ->
+    CurrentRead = dtls_record:get_connection_state_by_epoch(Epoch, ConnectionStates, read),
+    case dtls_record:replay_detect(CT, CurrentRead) of
+        false ->
+            decode_cipher_text(State#state{connection_states = ConnectionStates}) ;
+        true ->
+            %% Ignore replayed record
+            next_record(State#state{protocol_buffers =
+                                        Buffers#protocol_buffers{dtls_cipher_texts = Rest},
+                                    connection_states = ConnectionStates})
+    end;
+next_record(#state{protocol_buffers =
+		       #protocol_buffers{dtls_cipher_texts = [#ssl_tls{epoch = Epoch} | Rest]}
+		   = Buffers,
+		   connection_states = #{current_read := #{epoch := CurrentEpoch}} = ConnectionStates} = State) 
+  when Epoch > CurrentEpoch ->
+    %% TODO Buffer later Epoch message, drop it for now
+    next_record(State#state{protocol_buffers =
+                                Buffers#protocol_buffers{dtls_cipher_texts = Rest},
+                            connection_states = ConnectionStates});
+next_record(#state{protocol_buffers =
+		       #protocol_buffers{dtls_cipher_texts = [ _ | Rest]}
+		   = Buffers,
+		   connection_states = ConnectionStates} = State) ->
+    %% Drop old epoch message
+    next_record(State#state{protocol_buffers =
+                                Buffers#protocol_buffers{dtls_cipher_texts = Rest},
+                            connection_states = ConnectionStates});
+next_record(#state{role = server,
+		   socket = {Listener, {Client, _}},
+		   transport_cb = gen_udp} = State) -> 
+    dtls_udp_listener:active_once(Listener, Client, self()),
+    {no_record, State};
+next_record(#state{role = client,
+		   socket = {_Server, Socket},
+		   transport_cb = Transport} = State) -> 
+    dtls_socket:setopts(Transport, Socket, [{active,once}]),
+    {no_record, State};
+next_record(State) ->
+    {no_record, State}.
+
+next_event(StateName, Record, State) ->
+    next_event(StateName, Record, State, []).
+
+next_event(connection = StateName, no_record,
+	   #state{connection_states = #{current_read := #{epoch := CurrentEpoch}}} = State0, Actions) ->
+    case next_record_if_active(State0) of
+	{no_record, State} ->
+            ssl_connection:hibernate_after(StateName, State, Actions);
+        {#ssl_tls{epoch = CurrentEpoch,
+                  type = ?HANDSHAKE,
+                  version = Version} = Record, State1} ->
+            State = dtls_version(StateName, Version, State1), 
+	    {next_state, StateName, State,
+	     [{next_event, internal, {protocol_record, Record}} | Actions]};
+        {#ssl_tls{epoch = CurrentEpoch} = Record, State} ->
+	    {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]};
+	{#ssl_tls{epoch = Epoch,
+		  type = ?HANDSHAKE,
+		  version = _Version}, State1} = _Record when Epoch == CurrentEpoch-1 ->
+	    {State2, MoreActions} = send_handshake_flight(State1, CurrentEpoch),
+            {NextRecord, State} = next_record(State2),
+            next_event(StateName, NextRecord, State, Actions ++ MoreActions);
+        %% From FLIGHT perspective CHANGE_CIPHER_SPEC is treated as a handshake
+        {#ssl_tls{epoch = Epoch,
+		  type = ?CHANGE_CIPHER_SPEC,
+		  version = _Version}, State1} = _Record when Epoch == CurrentEpoch-1 ->
+	    {State2, MoreActions} = send_handshake_flight(State1, CurrentEpoch),
+	    {NextRecord, State} = next_record(State2),
+            next_event(StateName, NextRecord, State, Actions ++ MoreActions);
+	{#ssl_tls{epoch = _Epoch,
+		  version = _Version}, State1} ->
+	    %% TODO maybe buffer later epoch
+            {Record, State} = next_record(State1),
+            next_event(StateName, Record, State, Actions); 
+	{#alert{} = Alert, State} ->
+	    {next_state, StateName, State, [{next_event, internal, Alert} | Actions]}
+    end;
+next_event(connection = StateName, Record,
+	   #state{connection_states = #{current_read := #{epoch := CurrentEpoch}}} = State0, Actions) ->
+    case Record of
+        #ssl_tls{epoch = CurrentEpoch,
+                 type = ?HANDSHAKE,
+                 version = Version} = Record ->
+            State = dtls_version(StateName, Version, State0), 
+	    {next_state, StateName, State,
+	     [{next_event, internal, {protocol_record, Record}} | Actions]};
+	#ssl_tls{epoch = CurrentEpoch} ->
+	    {next_state, StateName, State0, [{next_event, internal, {protocol_record, Record}} | Actions]};
+	#ssl_tls{epoch = Epoch,
+                 type = ?HANDSHAKE,
+                 version = _Version} when Epoch == CurrentEpoch-1 ->
+	    {State1, MoreActions} = send_handshake_flight(State0, CurrentEpoch),
+            {NextRecord, State} = next_record(State1),
+            next_event(StateName, NextRecord, State, Actions ++ MoreActions);
+        %% From FLIGHT perspective CHANGE_CIPHER_SPEC is treated as a handshake
+        #ssl_tls{epoch = Epoch,
+                 type = ?CHANGE_CIPHER_SPEC,
+                 version = _Version} when Epoch == CurrentEpoch-1 ->
+	    {State1, MoreActions} = send_handshake_flight(State0, CurrentEpoch),
+            {NextRecord, State} = next_record(State1),
+            next_event(StateName, NextRecord, State, Actions ++ MoreActions); 
+        _ -> 
+            next_event(StateName, no_record, State0, Actions) 
+    end;
+next_event(StateName, Record, 
+	   #state{connection_states = #{current_read := #{epoch := CurrentEpoch}}} = State0, Actions) ->
+    case Record of
+	no_record ->
+	    {next_state, StateName, State0, Actions};
+        #ssl_tls{epoch = CurrentEpoch,
+                 version = Version} = Record ->
+            State = dtls_version(StateName, Version, State0),
+            {next_state, StateName,  State,
+         [{next_event, internal, {protocol_record, Record}} | Actions]};
+	#ssl_tls{epoch = _Epoch,
+		 version = _Version} = _Record ->
+	    %% TODO maybe buffer later epoch
+            {Record, State} = next_record(State0),
+            next_event(StateName, Record, State, Actions); 
+	#alert{} = Alert ->
+	    {next_state, StateName, State0, [{next_event, internal, Alert} | Actions]}
+    end.
+
+handle_common_event(internal, #alert{} = Alert, StateName, 
+		    #state{negotiated_version = Version} = State) ->
+    handle_own_alert(Alert, Version, StateName, State);
+%%% DTLS record protocol level handshake messages 
+handle_common_event(internal, #ssl_tls{type = ?HANDSHAKE,
+				       fragment = Data}, 
+		    StateName, 
+		    #state{protocol_buffers = Buffers0,
+			   negotiated_version = Version} = State0) ->
+    try
+	case dtls_handshake:get_dtls_handshake(Version, Data, Buffers0) of
+	    {[], Buffers} ->
+		{Record, State} = next_record(State0#state{protocol_buffers = Buffers}),
+		next_event(StateName, Record, State);
+	    {Packets, Buffers} ->
+		State = State0#state{protocol_buffers = Buffers},
+		Events = dtls_handshake_events(Packets),
+                {next_state, StateName, 
+                 State#state{unprocessed_handshake_events = unprocessed_events(Events)}, Events}
+	end
+    catch throw:#alert{} = Alert ->
+	    handle_own_alert(Alert, Version, StateName, State0)
+    end;
+%%% DTLS record protocol level application data messages 
+handle_common_event(internal, #ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, StateName, State) ->
+    {next_state, StateName, State, [{next_event, internal, {application_data, Data}}]};
+%%% DTLS record protocol level change cipher messages
+handle_common_event(internal, #ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = Data}, StateName, State) ->
+    {next_state, StateName, State, [{next_event, internal, #change_cipher_spec{type = Data}}]};
+%%% DTLS record protocol level Alert messages
+handle_common_event(internal, #ssl_tls{type = ?ALERT, fragment = EncAlerts}, StateName,
+		    #state{negotiated_version = Version} = State) ->
+    case decode_alerts(EncAlerts) of
+	Alerts = [_|_] ->
+	    handle_alerts(Alerts,  {next_state, StateName, State});
+	#alert{} = Alert ->
+	    handle_own_alert(Alert, Version, StateName, State)
+    end;
+%% Ignore unknown TLS record level protocol messages
+handle_common_event(internal, #ssl_tls{type = _Unknown}, StateName, State) ->
+    {next_state, StateName, State}.
+
+%%====================================================================
+%% Handshake handling
+%%====================================================================	     
+
+renegotiate(#state{role = client} = State, Actions) ->
+    %% Handle same way as if server requested
+    %% the renegotiation
+    {next_state, connection, State,
+     [{next_event, internal, #hello_request{}} | Actions]};
+
+renegotiate(#state{role = server} = State0, Actions) ->
+    HelloRequest = ssl_handshake:hello_request(),
+    State1 = prepare_flight(State0),
+    {State2, MoreActions} = send_handshake(HelloRequest, State1),
+    {Record, State} = next_record(State2),
+    next_event(hello, Record, State, Actions ++ MoreActions).
+
 send_handshake(Handshake, #state{connection_states = ConnectionStates} = State) ->
     #{epoch := Epoch} = ssl_record:current_connection_state(ConnectionStates, write),
     send_handshake_flight(queue_handshake(Handshake, State), Epoch).
@@ -104,85 +317,12 @@ queue_handshake(Handshake0, #state{tls_handshake_history = Hist0,
 					 next_sequence => Seq +1},
 		tls_handshake_history = Hist}.
 
-
-send_handshake_flight(#state{socket = Socket,
-			     transport_cb = Transport,
-			     flight_buffer = #{handshakes := Flight,
-					       change_cipher_spec := undefined},
-			     negotiated_version = Version,
-			     connection_states = ConnectionStates0} = State0, Epoch) ->
-    %% TODO remove hardcoded Max size
-    {Encoded, ConnectionStates} =
-	encode_handshake_flight(lists:reverse(Flight), Version, 1400, Epoch, ConnectionStates0),
-    send(Transport, Socket, Encoded), 
-   {State0#state{connection_states = ConnectionStates}, []};
-
-send_handshake_flight(#state{socket = Socket,
-			     transport_cb = Transport,
-			     flight_buffer = #{handshakes := [_|_] = Flight0,
-					       change_cipher_spec := ChangeCipher,
-					       handshakes_after_change_cipher_spec := []},
-			     negotiated_version = Version,
-			     connection_states = ConnectionStates0} = State0, Epoch) ->      
-    {HsBefore, ConnectionStates1} =
-	encode_handshake_flight(lists:reverse(Flight0), Version, 1400, Epoch, ConnectionStates0),
-    {EncChangeCipher, ConnectionStates} = encode_change_cipher(ChangeCipher, Version, Epoch, ConnectionStates1),
-
-    send(Transport, Socket, [HsBefore, EncChangeCipher]),
-    {State0#state{connection_states = ConnectionStates}, []};
-
-send_handshake_flight(#state{socket = Socket,
-			     transport_cb = Transport,
-			     flight_buffer = #{handshakes := [_|_] = Flight0,
-					       change_cipher_spec := ChangeCipher,
-					       handshakes_after_change_cipher_spec := Flight1},
-			     negotiated_version = Version,
-			     connection_states = ConnectionStates0} = State0, Epoch) ->      
-    {HsBefore, ConnectionStates1} =
-	encode_handshake_flight(lists:reverse(Flight0), Version, 1400, Epoch-1, ConnectionStates0),
-    {EncChangeCipher, ConnectionStates2} = 
-	encode_change_cipher(ChangeCipher, Version, Epoch-1, ConnectionStates1),
-    {HsAfter, ConnectionStates} =
-	encode_handshake_flight(lists:reverse(Flight1), Version, 1400, Epoch, ConnectionStates2),
-    send(Transport, Socket, [HsBefore, EncChangeCipher, HsAfter]),
-    {State0#state{connection_states = ConnectionStates}, []};
-
-send_handshake_flight(#state{socket = Socket,
-			     transport_cb = Transport,
-			     flight_buffer = #{handshakes := [],
-					       change_cipher_spec := ChangeCipher,
-					       handshakes_after_change_cipher_spec := Flight1},
-			     negotiated_version = Version,
-			     connection_states = ConnectionStates0} = State0, Epoch) ->
-    {EncChangeCipher, ConnectionStates1} = 
-	encode_change_cipher(ChangeCipher, Version, Epoch-1, ConnectionStates0),
-    {HsAfter, ConnectionStates} =
-	encode_handshake_flight(lists:reverse(Flight1), Version, 1400, Epoch, ConnectionStates1),
-    send(Transport, Socket, [EncChangeCipher, HsAfter]),
-    {State0#state{connection_states = ConnectionStates}, []}.
-
 queue_change_cipher(ChangeCipher, #state{flight_buffer = Flight,
 					 connection_states = ConnectionStates0} = State) -> 
     ConnectionStates = 
 	dtls_record:next_epoch(ConnectionStates0, write), 
     State#state{flight_buffer = Flight#{change_cipher_spec => ChangeCipher},
 		connection_states = ConnectionStates}.
-
-send_alert(Alert, #state{negotiated_version = Version,
-			 socket = Socket,
-			 transport_cb = Transport,
-			 connection_states = ConnectionStates0} = State0) ->
-    {BinMsg, ConnectionStates} =
-	encode_alert(Alert, Version, ConnectionStates0),
-    send(Transport, Socket, BinMsg),
-    State0#state{connection_states = ConnectionStates}.
-
-close(downgrade, _,_,_,_) ->
-    ok;
-%% Other
-close(_, Socket, Transport, _,_) ->
-    dtls_socket:close(Transport,Socket).
-
 reinit_handshake_data(#state{protocol_buffers = Buffers} = State) ->
     State#state{premaster_secret = undefined,
 		public_key_info = undefined,
@@ -200,54 +340,81 @@ select_sni_extension(#client_hello{extensions = HelloExtensions}) ->
     HelloExtensions#hello_extensions.sni;
 select_sni_extension(_) ->
     undefined.
+
 empty_connection_state(ConnectionEnd, BeastMitigation) ->
     Empty = ssl_record:empty_connection_state(ConnectionEnd, BeastMitigation),
     dtls_record:empty_connection_state(Empty).
 
-socket(Pid,  Transport, Socket, Connection, _) ->
-    dtls_socket:socket(Pid, Transport, Socket, Connection).
+%%====================================================================
+%% Alert and close handling
+%%====================================================================	     
+encode_alert(#alert{} = Alert, Version, ConnectionStates) ->
+    dtls_record:encode_alert_record(Alert, Version, ConnectionStates).
 
-setopts(Transport, Socket, Other) ->
-    dtls_socket:setopts(Transport, Socket, Other).
-getopts(Transport, Socket, Tag) ->
-    dtls_socket:getopts(Transport, Socket, Tag).
+send_alert(Alert, #state{negotiated_version = Version,
+			 socket = Socket,
+			 transport_cb = Transport,
+			 connection_states = ConnectionStates0} = State0) ->
+    {BinMsg, ConnectionStates} =
+	encode_alert(Alert, Version, ConnectionStates0),
+    send(Transport, Socket, BinMsg),
+    State0#state{connection_states = ConnectionStates}.
+
+close(downgrade, _,_,_,_) ->
+    ok;
+%% Other
+close(_, Socket, Transport, _,_) ->
+    dtls_socket:close(Transport,Socket).
 
 protocol_name() ->
     "DTLS".
         
 %%====================================================================
-%% tls_connection_sup API
-%%====================================================================
+%% Data handling
+%%====================================================================	 
 
-%%--------------------------------------------------------------------
--spec start_link(atom(), host(), inet:port_number(), port(), list(), pid(), tuple()) ->
-			{ok, pid()} | ignore |  {error, reason()}.
-%%
-%% Description: Creates a gen_fsm process which calls Module:init/1 to
-%% initialize. To ensure a synchronized start-up procedure, this function
-%% does not return until Module:init/1 has returned.  
-%%--------------------------------------------------------------------
-start_link(Role, Host, Port, Socket, Options, User, CbInfo) ->
-    {ok, proc_lib:spawn_link(?MODULE, init, [[Role, Host, Port, Socket, Options, User, CbInfo]])}.
+encode_data(Data, Version, ConnectionStates0)->
+    dtls_record:encode_data(Data, Version, ConnectionStates0).
 
-init([Role, Host, Port, Socket, Options,  User, CbInfo]) ->
-    process_flag(trap_exit, true),
-    State0 =  initial_state(Role, Host, Port, Socket, Options, User, CbInfo),
-    try
-	State = ssl_connection:ssl_config(State0#state.ssl_options, Role, State0),
-	gen_statem:enter_loop(?MODULE, [], init, State)
-    catch
-	throw:Error ->
-	    gen_statem:enter_loop(?MODULE, [], error, {Error,State0})
+passive_receive(State0 = #state{user_data_buffer = Buffer}, StateName) ->
+    case Buffer of
+	<<>> ->
+	    {Record, State} = next_record(State0),
+	    next_event(StateName, Record, State);
+	_ ->
+	    {Record, State} = ssl_connection:read_application_data(<<>>, State0),
+	    next_event(StateName, Record, State)
     end.
+next_record_if_active(State =
+		      #state{socket_options =
+			     #socket_options{active = false}}) ->
+    {no_record ,State};
 
-callback_mode() ->
-    [state_functions, state_enter].
+next_record_if_active(State) ->
+    next_record(State).
+
+send(Transport, {_, {{_,_}, _} = Socket}, Data) ->
+    send(Transport, Socket, Data);
+send(Transport, Socket, Data) ->
+   dtls_socket:send(Transport, Socket, Data).
+
+socket(Pid,  Transport, Socket, Connection, _) ->
+    dtls_socket:socket(Pid, Transport, Socket, Connection).
+
+setopts(Transport, Socket, Other) ->
+    dtls_socket:setopts(Transport, Socket, Other).
+
+getopts(Transport, Socket, Tag) ->
+    dtls_socket:getopts(Transport, Socket, Tag).
 
 %%--------------------------------------------------------------------
 %% State functions 
 %%--------------------------------------------------------------------
-
+%%--------------------------------------------------------------------
+-spec init(gen_statem:event_type(),
+	   {start, timeout()} | term(), #state{}) ->
+		   gen_statem:state_function_result().
+%%--------------------------------------------------------------------
 init(enter, _, State) ->
     {keep_state, State};     
 init({call, From}, {start, Timeout}, 
@@ -277,28 +444,33 @@ init({call, From}, {start, Timeout},
     {Record, State} = next_record(State3),
     next_event(hello, Record, State, Actions);
 init({call, _} = Type, Event, #state{role = server, transport_cb = gen_udp} = State) ->
-    Result = ssl_connection:init(Type, Event, 
-                                 State#state{flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT},
-                                             protocol_specific = #{current_cookie_secret => dtls_v1:cookie_secret(), 
-                                                                   previous_cookie_secret => <<>>,
-                                                                   ignored_alerts => 0,
-                                                                   max_ignored_alerts => 10}},
-                                 ?MODULE),
+    Result = gen_handshake(?FUNCTION_NAME, Type, Event, 
+                           State#state{flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT},
+                                       protocol_specific = #{current_cookie_secret => dtls_v1:cookie_secret(), 
+                                                             previous_cookie_secret => <<>>,
+                                                             ignored_alerts => 0,
+                                                             max_ignored_alerts => 10}}),
     erlang:send_after(dtls_v1:cookie_timeout(), self(), new_cookie_secret),
     Result;
-                                     
+
 init({call, _} = Type, Event, #state{role = server} = State) ->
     %% I.E. DTLS over sctp
-    ssl_connection:init(Type, Event, State#state{flight_state = reliable}, ?MODULE);
+    gen_handshake(?FUNCTION_NAME, Type, Event, State#state{flight_state = reliable});
 init(Type, Event, State) ->
-    ssl_connection:init(Type, Event, State, ?MODULE).
- 
+   gen_handshake(?FUNCTION_NAME, Type, Event, State).
+
+%%--------------------------------------------------------------------
+-spec error(gen_statem:event_type(),
+	   {start, timeout()} | term(), #state{}) ->
+		   gen_statem:state_function_result().
+%%--------------------------------------------------------------------
 error(enter, _, State) ->
     {keep_state, State};     
 error({call, From}, {start, _Timeout}, {Error, State}) ->
-    {stop_and_reply, normal, {reply, From, {error, Error}}, State};
-error({call, From}, Msg, State) ->
-    handle_call(Msg, From, error, State);
+    ssl_connection:stop_and_reply(
+      normal, {reply, From, {error, Error}}, State);
+error({call, _} = Call, Msg, State) ->
+    gen_handshake(?FUNCTION_NAME, Call, Msg, State);
 error(_, _, _) ->
      {keep_state_and_data, [postpone]}.
 
@@ -330,7 +502,7 @@ hello(internal, #client_hello{cookie = <<>>,
     State1 = prepare_flight(State0#state{negotiated_version = Version}),
     {State2, Actions} = send_handshake(VerifyRequest, State1),
     {Record, State} = next_record(State2),
-    next_event(hello, Record, State#state{tls_handshake_history = ssl_handshake:init_handshake_history()}, Actions);
+    next_event(?FUNCTION_NAME, Record, State#state{tls_handshake_history = ssl_handshake:init_handshake_history()}, Actions);
 hello(internal, #client_hello{cookie = Cookie} = Hello, #state{role = server,
 							       transport_cb = Transport,
 							       socket = Socket,
@@ -372,7 +544,7 @@ hello(internal, #hello_verify_request{cookie = Cookie}, #state{role = client,
 			      Session0#session{session_id = 
 						   Hello#client_hello.session_id}},
     {Record, State} = next_record(State3),
-    next_event(hello, Record, State, Actions);
+    next_event(?FUNCTION_NAME, Record, State, Actions);
 hello(internal, #server_hello{} = Hello,
       #state{connection_states = ConnectionStates0,
 	     negotiated_version = ReqVersion,
@@ -381,80 +553,96 @@ hello(internal, #server_hello{} = Hello,
 	     ssl_options = SslOptions} = State) ->
     case dtls_handshake:hello(Hello, SslOptions, ConnectionStates0, Renegotiation) of
 	#alert{} = Alert ->
-	    handle_own_alert(Alert, ReqVersion, hello, State);
+	    handle_own_alert(Alert, ReqVersion, ?FUNCTION_NAME, State);
 	{Version, NewId, ConnectionStates, ProtoExt, Protocol} ->
 	    ssl_connection:handle_session(Hello, 
 					  Version, NewId, ConnectionStates, ProtoExt, Protocol, State)
     end;
 hello(internal, {handshake, {#client_hello{cookie = <<>>} = Handshake, _}}, State) ->
     %% Initial hello should not be in handshake history
-    {next_state, hello, State, [{next_event, internal, Handshake}]};
+    {next_state, ?FUNCTION_NAME, State, [{next_event, internal, Handshake}]};
 hello(internal, {handshake, {#hello_verify_request{} = Handshake, _}}, State) ->
     %% hello_verify should not be in handshake history
-    {next_state, hello, State, [{next_event, internal, Handshake}]};
+    {next_state, ?FUNCTION_NAME, State, [{next_event, internal, Handshake}]};
 hello(info, Event, State) ->
-    handle_info(Event, hello, State);
+    gen_info(Event, ?FUNCTION_NAME, State);
 hello(state_timeout, Event, State) ->
-    handle_state_timeout(Event, hello, State);
+    handle_state_timeout(Event, ?FUNCTION_NAME, State);
 hello(Type, Event, State) ->
-    ssl_connection:hello(Type, Event, State, ?MODULE).
+    gen_handshake(?FUNCTION_NAME, Type, Event, State).
 
+%%--------------------------------------------------------------------
+-spec abbreviated(gen_statem:event_type(), term(), #state{}) ->
+			 gen_statem:state_function_result().
+%%--------------------------------------------------------------------
 abbreviated(enter, _, State0) ->
     {State, Actions} = handle_flight_timer(State0),
     {keep_state, State, Actions}; 
 abbreviated(info, Event, State) ->
-    handle_info(Event, abbreviated, State);
+    gen_info(Event, ?FUNCTION_NAME, State);
 abbreviated(internal = Type, 
 	    #change_cipher_spec{type = <<1>>} = Event, 
 	    #state{connection_states = ConnectionStates0} = State) ->
     ConnectionStates1 = dtls_record:save_current_connection_state(ConnectionStates0, read),
     ConnectionStates = dtls_record:next_epoch(ConnectionStates1, read),
-    ssl_connection:abbreviated(Type, Event, State#state{connection_states = ConnectionStates}, ?MODULE);
+    gen_handshake(?FUNCTION_NAME, Type, Event, State#state{connection_states = ConnectionStates});
 abbreviated(internal = Type, #finished{} = Event, #state{connection_states = ConnectionStates} = State) ->
-    ssl_connection:abbreviated(Type, Event, 
-                               prepare_flight(State#state{connection_states = ConnectionStates,
-                                                          flight_state = connection}), ?MODULE);
+    gen_handshake(?FUNCTION_NAME, Type, Event, 
+                  prepare_flight(State#state{connection_states = ConnectionStates,
+                                             flight_state = connection}));
 abbreviated(state_timeout, Event, State) ->
-    handle_state_timeout(Event, abbreviated, State);
+    handle_state_timeout(Event, ?FUNCTION_NAME, State);
 abbreviated(Type, Event, State) ->
-    ssl_connection:abbreviated(Type, Event, State, ?MODULE).
-
+    gen_handshake(?FUNCTION_NAME, Type, Event, State).
+%%--------------------------------------------------------------------
+-spec certify(gen_statem:event_type(), term(), #state{}) ->
+		     gen_statem:state_function_result().
+%%--------------------------------------------------------------------
 certify(enter, _, State0) ->
     {State, Actions} = handle_flight_timer(State0),
     {keep_state, State, Actions}; 
 certify(info, Event, State) ->
-    handle_info(Event, certify, State);
+    gen_info(Event, ?FUNCTION_NAME, State);
 certify(internal = Type, #server_hello_done{} = Event, State) ->
     ssl_connection:certify(Type, Event, prepare_flight(State), ?MODULE);
 certify(state_timeout, Event, State) ->
-    handle_state_timeout(Event, certify, State);
+    handle_state_timeout(Event, ?FUNCTION_NAME, State);
 certify(Type, Event, State) ->
-    ssl_connection:certify(Type, Event, State, ?MODULE).
+    gen_handshake(?FUNCTION_NAME, Type, Event, State).
 
+%%--------------------------------------------------------------------
+-spec cipher(gen_statem:event_type(), term(), #state{}) ->
+		    gen_statem:state_function_result().
+%%--------------------------------------------------------------------
 cipher(enter, _, State0) ->
     {State, Actions} = handle_flight_timer(State0),
     {keep_state, State, Actions}; 
 cipher(info, Event, State) ->
-    handle_info(Event, cipher, State);
+    gen_info(Event, ?FUNCTION_NAME, State);
 cipher(internal = Type, #change_cipher_spec{type = <<1>>} = Event,  
        #state{connection_states = ConnectionStates0} = State) ->
     ConnectionStates1 = dtls_record:save_current_connection_state(ConnectionStates0, read),
     ConnectionStates = dtls_record:next_epoch(ConnectionStates1, read),
-    ssl_connection:cipher(Type, Event, State#state{connection_states = ConnectionStates}, ?MODULE);
+    ssl_connection:?FUNCTION_NAME(Type, Event, State#state{connection_states = ConnectionStates}, ?MODULE);
 cipher(internal = Type, #finished{} = Event, #state{connection_states = ConnectionStates} = State) ->
-    ssl_connection:cipher(Type, Event, 
-			  prepare_flight(State#state{connection_states = ConnectionStates,
-                                                     flight_state = connection}), 
-                          ?MODULE);
+    ssl_connection:?FUNCTION_NAME(Type, Event, 
+                                  prepare_flight(State#state{connection_states = ConnectionStates,
+                                                             flight_state = connection}), 
+                                  ?MODULE);
 cipher(state_timeout, Event, State) ->
-    handle_state_timeout(Event, cipher, State);
+    handle_state_timeout(Event, ?FUNCTION_NAME, State);
 cipher(Type, Event, State) ->
-     ssl_connection:cipher(Type, Event, State, ?MODULE).
+     ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
 
+%%--------------------------------------------------------------------
+-spec connection(gen_statem:event_type(),  
+		 #hello_request{} | #client_hello{}| term(), #state{}) ->
+			gen_statem:state_function_result().
+%%--------------------------------------------------------------------
 connection(enter, _, State) ->
     {keep_state, State};     
 connection(info, Event, State) ->
-    handle_info(Event, connection, State);
+    gen_info(Event, ?FUNCTION_NAME, State);
 connection(internal, #hello_request{}, #state{host = Host, port = Port,
                                               session = #session{own_certificate = Cert} = Session0,
                                               session_cache = Cache, session_cache_cb = CacheCb,
@@ -487,141 +675,29 @@ connection(internal, #client_hello{}, #state{role = server, allow_renegotiate =
     Alert = ?ALERT_REC(?WARNING, ?NO_RENEGOTIATION),
     State1 = send_alert(Alert, State0),
     {Record, State} = ssl_connection:prepare_connection(State1, ?MODULE),
-    next_event(connection, Record, State);
+    next_event(?FUNCTION_NAME, Record, State);
 connection(Type, Event, State) ->
-     ssl_connection:connection(Type, Event, State, ?MODULE).
+     ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
 
 %%TODO does this make sense for DTLS ?
+%%--------------------------------------------------------------------
+-spec downgrade(gen_statem:event_type(), term(), #state{}) ->
+		       gen_statem:state_function_result().
+%%--------------------------------------------------------------------
 downgrade(enter, _, State) ->
     {keep_state, State};
 downgrade(Type, Event, State) ->
-     ssl_connection:downgrade(Type, Event, State, ?MODULE).
+     ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
 
 %%--------------------------------------------------------------------
-%% Description: This function is called by a gen_fsm when it receives any
-%% other message than a synchronous or asynchronous event
-%% (or a system message).
+%% gen_statem callbacks
 %%--------------------------------------------------------------------
+callback_mode() ->
+    [state_functions, state_enter].
 
-%% raw data from socket, unpack records
-handle_info({Protocol, _, _, _, Data}, StateName,
-            #state{data_tag = Protocol} = State0) ->
-    case next_dtls_record(Data, State0) of
-	{Record, State} ->
-	    next_event(StateName, Record, State);
-	#alert{} = Alert ->
-	    ssl_connection:handle_normal_shutdown(Alert, StateName, State0), 
-	    {stop, {shutdown, own_alert}}
-    end;
-handle_info({CloseTag, Socket}, StateName,
-	    #state{socket = Socket, 
-                   socket_options = #socket_options{active = Active},
-                   protocol_buffers = #protocol_buffers{dtls_cipher_texts = CTs},
-                   close_tag = CloseTag,
-		   negotiated_version = Version} = State) ->
-    %% Note that as of DTLS 1.2 (TLS 1.1),
-    %% failure to properly close a connection no longer requires that a
-    %% session not be resumed.	This is a change from DTLS 1.0 to conform
-    %% with widespread implementation practice.
-    case (Active == false) andalso (CTs =/= []) of
-        false ->
-            case Version of
-                {254, N} when N =< 253 ->
-                    ok;
-                _ ->
-                    %% As invalidate_sessions here causes performance issues,
-                    %% we will conform to the widespread implementation
-                    %% practice and go aginst the spec
-                    %%invalidate_session(Role, Host, Port, Session)
-                    ok
-            end,
-            ssl_connection:handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
-            {stop, {shutdown, transport_closed}};
-        true ->
-            %% Fixes non-delivery of final DTLS record in {active, once}.
-            %% Basically allows the application the opportunity to set {active, once} again
-            %% and then receive the final message.
-            next_event(StateName, no_record, State)
-    end;
-
-handle_info(new_cookie_secret, StateName, 
-            #state{protocol_specific = #{current_cookie_secret := Secret} = CookieInfo} = State) ->
-    erlang:send_after(dtls_v1:cookie_timeout(), self(), new_cookie_secret),
-    {next_state, StateName, State#state{protocol_specific = 
-                                            CookieInfo#{current_cookie_secret => dtls_v1:cookie_secret(),
-                                                        previous_cookie_secret => Secret}}};
-handle_info(Msg, StateName, State) ->
-    ssl_connection:StateName(info, Msg, State, ?MODULE).
-
-handle_call(Event, From, StateName, State) ->
-    ssl_connection:handle_call(Event, From, StateName, State, ?MODULE).
-
-handle_common_event(internal, #alert{} = Alert, StateName, 
-		    #state{negotiated_version = Version} = State) ->
-    handle_own_alert(Alert, Version, StateName, State);
-%%% DTLS record protocol level handshake messages 
-handle_common_event(internal, #ssl_tls{type = ?HANDSHAKE,
-				       fragment = Data}, 
-		    StateName, 
-		    #state{protocol_buffers = Buffers0,
-			   negotiated_version = Version} = State0) ->
-    try
-	case dtls_handshake:get_dtls_handshake(Version, Data, Buffers0) of
-	    {[], Buffers} ->
-		{Record, State} = next_record(State0#state{protocol_buffers = Buffers}),
-		next_event(StateName, Record, State);
-	    {Packets, Buffers} ->
-		State = State0#state{protocol_buffers = Buffers},
-		Events = dtls_handshake_events(Packets),
-                {next_state, StateName, 
-                 State#state{unprocessed_handshake_events = unprocessed_events(Events)}, Events}
-	end
-    catch throw:#alert{} = Alert ->
-	    handle_own_alert(Alert, Version, StateName, State0)
-    end;
-%%% DTLS record protocol level application data messages 
-handle_common_event(internal, #ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, StateName, State) ->
-    {next_state, StateName, State, [{next_event, internal, {application_data, Data}}]};
-%%% DTLS record protocol level change cipher messages
-handle_common_event(internal, #ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = Data}, StateName, State) ->
-    {next_state, StateName, State, [{next_event, internal, #change_cipher_spec{type = Data}}]};
-%%% DTLS record protocol level Alert messages
-handle_common_event(internal, #ssl_tls{type = ?ALERT, fragment = EncAlerts}, StateName,
-		    #state{negotiated_version = Version} = State) ->
-    case decode_alerts(EncAlerts) of
-	Alerts = [_|_] ->
-	    handle_alerts(Alerts,  {next_state, StateName, State});
-	#alert{} = Alert ->
-	    handle_own_alert(Alert, Version, StateName, State)
-    end;
-%% Ignore unknown TLS record level protocol messages
-handle_common_event(internal, #ssl_tls{type = _Unknown}, StateName, State) ->
-    {next_state, StateName, State}.
-
-handle_state_timeout(flight_retransmission_timeout, StateName, 
-                    #state{flight_state = {retransmit, NextTimeout}} = State0) ->
-    {State1, Actions} = send_handshake_flight(State0#state{flight_state = {retransmit, NextTimeout}}, 
-                                              retransmit_epoch(StateName, State0)),
-    {Record, State} = next_record(State1),
-    next_event(StateName, Record, State, Actions).
-
-send(Transport, {_, {{_,_}, _} = Socket}, Data) ->
-    send(Transport, Socket, Data);
-send(Transport, Socket, Data) ->
-   dtls_socket:send(Transport, Socket, Data).
-%%--------------------------------------------------------------------
-%% Description:This function is called by a gen_fsm when it is about
-%% to terminate. It should be the opposite of Module:init/1 and do any
-%% necessary cleaning up. When it returns, the gen_fsm terminates with
-%% Reason. The return value is ignored.
-%%--------------------------------------------------------------------
 terminate(Reason, StateName, State) ->
     ssl_connection:terminate(Reason, StateName, State).
 
-%%--------------------------------------------------------------------
-%% code_change(OldVsn, StateName, State, Extra) -> {ok, StateName, NewState}
-%% Description: Convert process state when code is changed
-%%--------------------------------------------------------------------
 code_change(_OldVsn, StateName, State, _Extra) ->
     {ok, StateName, State}.
 
@@ -631,55 +707,6 @@ format_status(Type, Data) ->
 %%--------------------------------------------------------------------
 %%% Internal functions
 %%--------------------------------------------------------------------
-handle_client_hello(#client_hello{client_version = ClientVersion} = Hello,
-		    #state{connection_states = ConnectionStates0,
-			   port = Port, session = #session{own_certificate = Cert} = Session0,
-			   renegotiation = {Renegotiation, _},
-			   session_cache = Cache,
-			   session_cache_cb = CacheCb,
-			   negotiated_protocol = CurrentProtocol,
-			   key_algorithm = KeyExAlg,
-			   ssl_options = SslOpts} = State0) ->
-    
-    case dtls_handshake:hello(Hello, SslOpts, {Port, Session0, Cache, CacheCb,
-					       ConnectionStates0, Cert, KeyExAlg}, Renegotiation) of
-	#alert{} = Alert ->
-	    handle_own_alert(Alert, ClientVersion, hello, State0);
-	{Version, {Type, Session},
-	 ConnectionStates, Protocol0, ServerHelloExt, HashSign} ->
-	    Protocol = case Protocol0 of
-			   undefined -> CurrentProtocol;
-			   _ -> Protocol0
-		       end,
-
-	    State = prepare_flight(State0#state{connection_states = ConnectionStates,
-						negotiated_version = Version,
-						hashsign_algorithm = HashSign,
-						session = Session,
-						negotiated_protocol = Protocol}),
-	    
-	    ssl_connection:hello(internal, {common_client_hello, Type, ServerHelloExt},
-				 State, ?MODULE)
-    end.
-
-encode_handshake_flight(Flight, Version, MaxFragmentSize, Epoch, ConnectionStates) ->
-    Fragments = lists:map(fun(Handshake) ->
-				  dtls_handshake:fragment_handshake(Handshake, MaxFragmentSize)
-			  end, Flight),
-    dtls_record:encode_handshake(Fragments, Version, Epoch, ConnectionStates).
-
-encode_change_cipher(#change_cipher_spec{}, Version, Epoch, ConnectionStates) ->
-    dtls_record:encode_change_cipher_spec(Version, Epoch, ConnectionStates).
-
-encode_data(Data, Version, ConnectionStates0)->
-    dtls_record:encode_data(Data, Version, ConnectionStates0).
-
-encode_alert(#alert{} = Alert, Version, ConnectionStates) ->
-    dtls_record:encode_alert_record(Alert, Version, ConnectionStates).
-
-decode_alerts(Bin) ->
-    ssl_alert:decode(Bin).
-
 initial_state(Role, Host, Port, Socket, {SSLOptions, SocketOptions, _}, User,
 	      {CbModule, DataTag, CloseTag, ErrorTag}) ->
     #ssl_options{beast_mitigation = BeastMitigation} = SSLOptions,
@@ -733,153 +760,10 @@ next_dtls_record(Data, #state{protocol_buffers = #protocol_buffers{
 	    Alert
     end.
 
-next_record(#state{unprocessed_handshake_events = N} = State) when N > 0 ->
-    {no_record, State#state{unprocessed_handshake_events = N-1}};
-					 
-next_record(#state{protocol_buffers =
-		       #protocol_buffers{dtls_cipher_texts = [#ssl_tls{epoch = Epoch} = CT | Rest]}
-		   = Buffers,
-		   connection_states = #{current_read := #{epoch := Epoch}} = ConnectionStates} = State) ->
-    CurrentRead = dtls_record:get_connection_state_by_epoch(Epoch, ConnectionStates, read),
-    case dtls_record:replay_detect(CT, CurrentRead) of
-        false ->
-            decode_cipher_text(State#state{connection_states = ConnectionStates}) ;
-        true ->
-            %% Ignore replayed record
-            next_record(State#state{protocol_buffers =
-                                        Buffers#protocol_buffers{dtls_cipher_texts = Rest},
-                                    connection_states = ConnectionStates})
-    end;
-next_record(#state{protocol_buffers =
-		       #protocol_buffers{dtls_cipher_texts = [#ssl_tls{epoch = Epoch} | Rest]}
-		   = Buffers,
-		   connection_states = #{current_read := #{epoch := CurrentEpoch}} = ConnectionStates} = State) 
-  when Epoch > CurrentEpoch ->
-    %% TODO Buffer later Epoch message, drop it for now
-    next_record(State#state{protocol_buffers =
-                                Buffers#protocol_buffers{dtls_cipher_texts = Rest},
-                            connection_states = ConnectionStates});
-next_record(#state{protocol_buffers =
-		       #protocol_buffers{dtls_cipher_texts = [ _ | Rest]}
-		   = Buffers,
-		   connection_states = ConnectionStates} = State) ->
-    %% Drop old epoch message
-    next_record(State#state{protocol_buffers =
-                                Buffers#protocol_buffers{dtls_cipher_texts = Rest},
-                            connection_states = ConnectionStates});
-next_record(#state{role = server,
-		   socket = {Listener, {Client, _}},
-		   transport_cb = gen_udp} = State) -> 
-    dtls_udp_listener:active_once(Listener, Client, self()),
-    {no_record, State};
-next_record(#state{role = client,
-		   socket = {_Server, Socket},
-		   transport_cb = Transport} = State) -> 
-    dtls_socket:setopts(Transport, Socket, [{active,once}]),
-    {no_record, State};
-next_record(State) ->
-    {no_record, State}.
-
-next_record_if_active(State =
-		      #state{socket_options =
-			     #socket_options{active = false}}) ->
-    {no_record ,State};
-
-next_record_if_active(State) ->
-    next_record(State).
-
-passive_receive(State0 = #state{user_data_buffer = Buffer}, StateName) ->
-    case Buffer of
-	<<>> ->
-	    {Record, State} = next_record(State0),
-	    next_event(StateName, Record, State);
-	_ ->
-	    {Record, State} = ssl_connection:read_application_data(<<>>, State0),
-	    next_event(StateName, Record, State)
-    end.
-
-next_event(StateName, Record, State) ->
-    next_event(StateName, Record, State, []).
-
-next_event(connection = StateName, no_record,
-	   #state{connection_states = #{current_read := #{epoch := CurrentEpoch}}} = State0, Actions) ->
-    case next_record_if_active(State0) of
-	{no_record, State} ->
-            ssl_connection:hibernate_after(StateName, State, Actions);
-        {#ssl_tls{epoch = CurrentEpoch,
-                  type = ?HANDSHAKE,
-                  version = Version} = Record, State1} ->
-            State = dtls_version(StateName, Version, State1), 
-	    {next_state, StateName, State,
-	     [{next_event, internal, {protocol_record, Record}} | Actions]};
-        {#ssl_tls{epoch = CurrentEpoch} = Record, State} ->
-	    {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]};
-	{#ssl_tls{epoch = Epoch,
-		  type = ?HANDSHAKE,
-		  version = _Version}, State1} = _Record when Epoch == CurrentEpoch-1 ->
-	    {State2, MoreActions} = send_handshake_flight(State1, CurrentEpoch),
-            {NextRecord, State} = next_record(State2),
-            next_event(StateName, NextRecord, State, Actions ++ MoreActions);
-        %% From FLIGHT perspective CHANGE_CIPHER_SPEC is treated as a handshake
-        {#ssl_tls{epoch = Epoch,
-		  type = ?CHANGE_CIPHER_SPEC,
-		  version = _Version}, State1} = _Record when Epoch == CurrentEpoch-1 ->
-	    {State2, MoreActions} = send_handshake_flight(State1, CurrentEpoch),
-	    {NextRecord, State} = next_record(State2),
-            next_event(StateName, NextRecord, State, Actions ++ MoreActions);
-	{#ssl_tls{epoch = _Epoch,
-		  version = _Version}, State1} ->
-	    %% TODO maybe buffer later epoch
-            {Record, State} = next_record(State1),
-            next_event(StateName, Record, State, Actions); 
-	{#alert{} = Alert, State} ->
-	    {next_state, StateName, State, [{next_event, internal, Alert} | Actions]}
-    end;
-next_event(connection = StateName, Record,
-	   #state{connection_states = #{current_read := #{epoch := CurrentEpoch}}} = State0, Actions) ->
-    case Record of
-        #ssl_tls{epoch = CurrentEpoch,
-                 type = ?HANDSHAKE,
-                 version = Version} = Record ->
-            State = dtls_version(StateName, Version, State0), 
-	    {next_state, StateName, State,
-	     [{next_event, internal, {protocol_record, Record}} | Actions]};
-	#ssl_tls{epoch = CurrentEpoch} ->
-	    {next_state, StateName, State0, [{next_event, internal, {protocol_record, Record}} | Actions]};
-	#ssl_tls{epoch = Epoch,
-                 type = ?HANDSHAKE,
-                 version = _Version} when Epoch == CurrentEpoch-1 ->
-	    {State1, MoreActions} = send_handshake_flight(State0, CurrentEpoch),
-            {NextRecord, State} = next_record(State1),
-            next_event(StateName, NextRecord, State, Actions ++ MoreActions);
-        %% From FLIGHT perspective CHANGE_CIPHER_SPEC is treated as a handshake
-        #ssl_tls{epoch = Epoch,
-                 type = ?CHANGE_CIPHER_SPEC,
-                 version = _Version} when Epoch == CurrentEpoch-1 ->
-	    {State1, MoreActions} = send_handshake_flight(State0, CurrentEpoch),
-            {NextRecord, State} = next_record(State1),
-            next_event(StateName, NextRecord, State, Actions ++ MoreActions); 
-        _ -> 
-            next_event(StateName, no_record, State0, Actions) 
-    end;
-next_event(StateName, Record, 
-	   #state{connection_states = #{current_read := #{epoch := CurrentEpoch}}} = State0, Actions) ->
-    case Record of
-	no_record ->
-	    {next_state, StateName, State0, Actions};
-        #ssl_tls{epoch = CurrentEpoch,
-                 version = Version} = Record ->
-            State = dtls_version(StateName, Version, State0),
-            {next_state, StateName,  State,
-         [{next_event, internal, {protocol_record, Record}} | Actions]};
-	#ssl_tls{epoch = _Epoch,
-		 version = _Version} = _Record ->
-	    %% TODO maybe buffer later epoch
-            {Record, State} = next_record(State0),
-            next_event(StateName, Record, State, Actions); 
-	#alert{} = Alert ->
-	    {next_state, StateName, State0, [{next_event, internal, Alert} | Actions]}
-    end.
+dtls_handshake_events(Packets) ->
+    lists:map(fun(Packet) ->
+		      {next_event, internal, {handshake, Packet}}
+	      end, Packets).
 
 decode_cipher_text(#state{protocol_buffers = #protocol_buffers{dtls_cipher_texts = [ CT | Rest]} = Buffers,
                           connection_states = ConnStates0} = State) ->
@@ -897,6 +781,176 @@ dtls_version(hello, Version, #state{role = server} = State) ->
 dtls_version(_,_, State) ->
     State.
 
+handle_client_hello(#client_hello{client_version = ClientVersion} = Hello,
+		    #state{connection_states = ConnectionStates0,
+			   port = Port, session = #session{own_certificate = Cert} = Session0,
+			   renegotiation = {Renegotiation, _},
+			   session_cache = Cache,
+			   session_cache_cb = CacheCb,
+			   negotiated_protocol = CurrentProtocol,
+			   key_algorithm = KeyExAlg,
+			   ssl_options = SslOpts} = State0) ->
+    
+    case dtls_handshake:hello(Hello, SslOpts, {Port, Session0, Cache, CacheCb,
+					       ConnectionStates0, Cert, KeyExAlg}, Renegotiation) of
+	#alert{} = Alert ->
+	    handle_own_alert(Alert, ClientVersion, hello, State0);
+	{Version, {Type, Session},
+	 ConnectionStates, Protocol0, ServerHelloExt, HashSign} ->
+	    Protocol = case Protocol0 of
+			   undefined -> CurrentProtocol;
+			   _ -> Protocol0
+		       end,
+
+	    State = prepare_flight(State0#state{connection_states = ConnectionStates,
+						negotiated_version = Version,
+						hashsign_algorithm = HashSign,
+                                                client_hello_version = ClientVersion,
+						session = Session,
+						negotiated_protocol = Protocol}),
+	    
+	    ssl_connection:hello(internal, {common_client_hello, Type, ServerHelloExt},
+				 State, ?MODULE)
+    end.
+
+
+%% raw data from socket, unpack records
+handle_info({Protocol, _, _, _, Data}, StateName,
+            #state{data_tag = Protocol} = State0) ->
+    case next_dtls_record(Data, State0) of
+	{Record, State} ->
+	    next_event(StateName, Record, State);
+	#alert{} = Alert ->
+	    ssl_connection:handle_normal_shutdown(Alert, StateName, State0), 
+	    ssl_connection:stop({shutdown, own_alert}, State0)
+    end;
+handle_info({CloseTag, Socket}, StateName,
+	    #state{socket = Socket, 
+                   socket_options = #socket_options{active = Active},
+                   protocol_buffers = #protocol_buffers{dtls_cipher_texts = CTs},
+                   close_tag = CloseTag,
+		   negotiated_version = Version} = State) ->
+    %% Note that as of DTLS 1.2 (TLS 1.1),
+    %% failure to properly close a connection no longer requires that a
+    %% session not be resumed.	This is a change from DTLS 1.0 to conform
+    %% with widespread implementation practice.
+    case (Active == false) andalso (CTs =/= []) of
+        false ->
+            case Version of
+                {254, N} when N =< 253 ->
+                    ok;
+                _ ->
+                    %% As invalidate_sessions here causes performance issues,
+                    %% we will conform to the widespread implementation
+                    %% practice and go aginst the spec
+                    %%invalidate_session(Role, Host, Port, Session)
+                    ok
+            end,
+            ssl_connection:handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
+            ssl_connection:stop({shutdown, transport_closed}, State);
+        true ->
+            %% Fixes non-delivery of final DTLS record in {active, once}.
+            %% Basically allows the application the opportunity to set {active, once} again
+            %% and then receive the final message.
+            next_event(StateName, no_record, State)
+    end;
+
+handle_info(new_cookie_secret, StateName, 
+            #state{protocol_specific = #{current_cookie_secret := Secret} = CookieInfo} = State) ->
+    erlang:send_after(dtls_v1:cookie_timeout(), self(), new_cookie_secret),
+    {next_state, StateName, State#state{protocol_specific = 
+                                            CookieInfo#{current_cookie_secret => dtls_v1:cookie_secret(),
+                                                        previous_cookie_secret => Secret}}};
+handle_info(Msg, StateName, State) ->
+    ssl_connection:StateName(info, Msg, State, ?MODULE).
+
+handle_state_timeout(flight_retransmission_timeout, StateName, 
+                    #state{flight_state = {retransmit, NextTimeout}} = State0) ->
+    {State1, Actions} = send_handshake_flight(State0#state{flight_state = {retransmit, NextTimeout}}, 
+                                              retransmit_epoch(StateName, State0)),
+    {Record, State} = next_record(State1),
+    next_event(StateName, Record, State, Actions).
+
+handle_alerts([], Result) ->
+    Result;
+handle_alerts(_, {stop, _, _} = Stop) ->
+    Stop;
+handle_alerts([Alert | Alerts], {next_state, StateName, State}) ->
+     handle_alerts(Alerts, ssl_connection:handle_alert(Alert, StateName, State));
+handle_alerts([Alert | Alerts], {next_state, StateName, State, _Actions}) ->
+     handle_alerts(Alerts, ssl_connection:handle_alert(Alert, StateName, State)).
+
+handle_own_alert(Alert, Version, StateName, #state{transport_cb = gen_udp,
+                                                   role = Role,
+                                                   ssl_options = Options} = State0) ->
+    case ignore_alert(Alert, State0) of
+        {true, State} ->
+            log_ignore_alert(Options#ssl_options.log_alert, StateName, Alert, Role),
+            {next_state, StateName, State};
+        {false, State} ->
+            ssl_connection:handle_own_alert(Alert, Version, StateName, State)
+    end;
+handle_own_alert(Alert, Version, StateName, State) ->
+    ssl_connection:handle_own_alert(Alert, Version, StateName, State).
+
+encode_handshake_flight(Flight, Version, MaxFragmentSize, Epoch, ConnectionStates) ->
+    Fragments = lists:map(fun(Handshake) ->
+				  dtls_handshake:fragment_handshake(Handshake, MaxFragmentSize)
+			  end, Flight),
+    dtls_record:encode_handshake(Fragments, Version, Epoch, ConnectionStates).
+
+encode_change_cipher(#change_cipher_spec{}, Version, Epoch, ConnectionStates) ->
+    dtls_record:encode_change_cipher_spec(Version, Epoch, ConnectionStates).
+
+decode_alerts(Bin) ->
+    ssl_alert:decode(Bin).
+
+gen_handshake(StateName, Type, Event, 
+	      #state{negotiated_version = Version} = State) ->
+    try ssl_connection:StateName(Type, Event, State, ?MODULE) of
+	Result ->
+	    Result
+    catch 
+	_:_ ->
+ 	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, 
+						       malformed_handshake_data),
+					    Version, StateName, State)  
+    end.
+
+gen_info(Event, connection = StateName,  #state{negotiated_version = Version} = State) ->
+    try handle_info(Event, StateName, State) of
+	Result ->
+	    Result
+    catch 
+	_:_ ->
+	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?INTERNAL_ERROR, 
+						       malformed_data), 
+					    Version, StateName, State)  
+    end;
+
+gen_info(Event, StateName, #state{negotiated_version = Version} = State) ->
+    try handle_info(Event, StateName, State) of
+	Result ->
+	    Result
+    catch 
+        _:_ ->
+	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, 
+						       malformed_handshake_data), 
+					    Version, StateName, State)  
+    end.
+unprocessed_events(Events) ->
+    %% The first handshake event will be processed immediately
+    %% as it is entered first in the event queue and
+    %% when it is processed there will be length(Events)-1
+    %% handshake events left to process before we should
+    %% process more TLS-records received on the socket. 
+    erlang:length(Events)-1.
+
+update_handshake_history(#hello_verify_request{}, _, Hist) ->
+    Hist;
+update_handshake_history(_, Handshake, Hist) ->
+    %% DTLS never needs option "v2_hello_compatible" to be true
+    ssl_handshake:update_handshake_history(Hist, iolist_to_binary(Handshake), false).
 prepare_flight(#state{flight_buffer = Flight,
 		      connection_states = ConnectionStates0,
 		      protocol_buffers = 
@@ -937,67 +991,67 @@ new_timeout(N) when N =< 30 ->
 new_timeout(_) -> 
     60.
 
-dtls_handshake_events(Packets) ->
-    lists:map(fun(Packet) ->
-		      {next_event, internal, {handshake, Packet}}
-	      end, Packets).
+send_handshake_flight(#state{socket = Socket,
+			     transport_cb = Transport,
+			     flight_buffer = #{handshakes := Flight,
+					       change_cipher_spec := undefined},
+			     negotiated_version = Version,
+			     connection_states = ConnectionStates0} = State0, Epoch) ->
+    %% TODO remove hardcoded Max size
+    {Encoded, ConnectionStates} =
+	encode_handshake_flight(lists:reverse(Flight), Version, 1400, Epoch, ConnectionStates0),
+    send(Transport, Socket, Encoded), 
+   {State0#state{connection_states = ConnectionStates}, []};
 
-renegotiate(#state{role = client} = State, Actions) ->
-    %% Handle same way as if server requested
-    %% the renegotiation
-    %%    Hs0 = ssl_handshake:init_handshake_history(),
-    {next_state, connection, State,
-     [{next_event, internal, #hello_request{}} | Actions]};
+send_handshake_flight(#state{socket = Socket,
+			     transport_cb = Transport,
+			     flight_buffer = #{handshakes := [_|_] = Flight0,
+					       change_cipher_spec := ChangeCipher,
+					       handshakes_after_change_cipher_spec := []},
+			     negotiated_version = Version,
+			     connection_states = ConnectionStates0} = State0, Epoch) ->      
+    {HsBefore, ConnectionStates1} =
+	encode_handshake_flight(lists:reverse(Flight0), Version, 1400, Epoch, ConnectionStates0),
+    {EncChangeCipher, ConnectionStates} = encode_change_cipher(ChangeCipher, Version, Epoch, ConnectionStates1),
 
-renegotiate(#state{role = server} = State0, Actions) ->
-    HelloRequest = ssl_handshake:hello_request(),
-    State1 = prepare_flight(State0),
-    {State2, MoreActions} = send_handshake(HelloRequest, State1),
-    {Record, State} = next_record(State2),
-    next_event(hello, Record, State, Actions ++ MoreActions).
+    send(Transport, Socket, [HsBefore, EncChangeCipher]),
+    {State0#state{connection_states = ConnectionStates}, []};
 
-handle_alerts([], Result) ->
-    Result;
-handle_alerts(_, {stop,_} = Stop) ->
-    Stop;
-handle_alerts([Alert | Alerts], {next_state, StateName, State}) ->
-     handle_alerts(Alerts, ssl_connection:handle_alert(Alert, StateName, State));
-handle_alerts([Alert | Alerts], {next_state, StateName, State, _Actions}) ->
-     handle_alerts(Alerts, ssl_connection:handle_alert(Alert, StateName, State)).
+send_handshake_flight(#state{socket = Socket,
+			     transport_cb = Transport,
+			     flight_buffer = #{handshakes := [_|_] = Flight0,
+					       change_cipher_spec := ChangeCipher,
+					       handshakes_after_change_cipher_spec := Flight1},
+			     negotiated_version = Version,
+			     connection_states = ConnectionStates0} = State0, Epoch) ->      
+    {HsBefore, ConnectionStates1} =
+	encode_handshake_flight(lists:reverse(Flight0), Version, 1400, Epoch-1, ConnectionStates0),
+    {EncChangeCipher, ConnectionStates2} = 
+	encode_change_cipher(ChangeCipher, Version, Epoch-1, ConnectionStates1),
+    {HsAfter, ConnectionStates} =
+	encode_handshake_flight(lists:reverse(Flight1), Version, 1400, Epoch, ConnectionStates2),
+    send(Transport, Socket, [HsBefore, EncChangeCipher, HsAfter]),
+    {State0#state{connection_states = ConnectionStates}, []};
+
+send_handshake_flight(#state{socket = Socket,
+			     transport_cb = Transport,
+			     flight_buffer = #{handshakes := [],
+					       change_cipher_spec := ChangeCipher,
+					       handshakes_after_change_cipher_spec := Flight1},
+			     negotiated_version = Version,
+			     connection_states = ConnectionStates0} = State0, Epoch) ->
+    {EncChangeCipher, ConnectionStates1} = 
+	encode_change_cipher(ChangeCipher, Version, Epoch-1, ConnectionStates0),
+    {HsAfter, ConnectionStates} =
+	encode_handshake_flight(lists:reverse(Flight1), Version, 1400, Epoch, ConnectionStates1),
+    send(Transport, Socket, [EncChangeCipher, HsAfter]),
+    {State0#state{connection_states = ConnectionStates}, []}.
 
 retransmit_epoch(_StateName, #state{connection_states = ConnectionStates}) ->
     #{epoch := Epoch} = 
 	ssl_record:current_connection_state(ConnectionStates, write),
     Epoch.
 	    
-update_handshake_history(#hello_verify_request{}, _, Hist) ->
-    Hist;
-update_handshake_history(_, Handshake, Hist) ->
-    %% DTLS never needs option "v2_hello_compatible" to be true
-    ssl_handshake:update_handshake_history(Hist, iolist_to_binary(Handshake), false).
-
-unprocessed_events(Events) ->
-    %% The first handshake event will be processed immediately
-    %% as it is entered first in the event queue and
-    %% when it is processed there will be length(Events)-1
-    %% handshake events left to process before we should
-    %% process more TLS-records received on the socket. 
-    erlang:length(Events)-1.
-
-handle_own_alert(Alert, Version, StateName, #state{transport_cb = gen_udp,
-                                                   role = Role,
-                                                   ssl_options = Options} = State0) ->
-    case ignore_alert(Alert, State0) of
-        {true, State} ->
-            log_ignore_alert(Options#ssl_options.log_alert, StateName, Alert, Role),
-            {next_state, StateName, State};
-        {false, State} ->
-            ssl_connection:handle_own_alert(Alert, Version, StateName, State)
-    end;
-handle_own_alert(Alert, Version, StateName, State) ->
-    ssl_connection:handle_own_alert(Alert, Version, StateName, State).
-
-
 ignore_alert(#alert{level = ?FATAL}, #state{protocol_specific = #{ignored_alerts := N,
                                                   max_ignored_alerts := N}} = State) ->
     {false, State};
diff --git a/lib/ssl/src/dtls_handshake.erl b/lib/ssl/src/dtls_handshake.erl
index 37a46b862e..6071eece13 100644
--- a/lib/ssl/src/dtls_handshake.erl
+++ b/lib/ssl/src/dtls_handshake.erl
@@ -16,6 +16,11 @@
 %% limitations under the License.
 %%
 %% %CopyrightEnd%
+
+%%----------------------------------------------------------------------
+%% Purpose: Help funtions for handling the DTLS (specific parts of)
+%%% SSL/TLS/DTLS handshake protocol
+%%----------------------------------------------------------------------
 -module(dtls_handshake).
 
 -include("dtls_connection.hrl").
@@ -24,15 +29,21 @@
 -include("ssl_internal.hrl").
 -include("ssl_alert.hrl").
 
+%% Handshake handling
 -export([client_hello/8, client_hello/9, cookie/4, hello/4, 
-	 hello_verify_request/2, get_dtls_handshake/3, fragment_handshake/2,
-	 handshake_bin/2, encode_handshake/3]).
+	 hello_verify_request/2]).
+        
+%% Handshake encoding
+-export([fragment_handshake/2, encode_handshake/3]).
+
+%% Handshake decodeing
+-export([get_dtls_handshake/3]). 
 
 -type dtls_handshake() :: #client_hello{} | #hello_verify_request{} | 
 			  ssl_handshake:ssl_handshake().
 
 %%====================================================================
-%% Internal application API
+%% Handshake handling
 %%====================================================================
 %%--------------------------------------------------------------------
 -spec client_hello(host(), inet:port_number(), ssl_record:connection_states(),
@@ -56,7 +67,8 @@ client_hello(Host, Port, ConnectionStates, SslOpts,
 %%--------------------------------------------------------------------
 client_hello(Host, Port, Cookie, ConnectionStates,
 	     #ssl_options{versions = Versions,
-			  ciphers = UserSuites
+			  ciphers = UserSuites,
+                          fallback = Fallback
 			 } = SslOpts,
 	     Cache, CacheCb, Renegotiation, OwnCert) ->
     Version =  dtls_record:highest_protocol_version(Versions),
@@ -66,12 +78,15 @@ client_hello(Host, Port, Cookie, ConnectionStates,
     CipherSuites = ssl_handshake:available_suites(UserSuites, TLSVersion),
 
     Extensions = ssl_handshake:client_hello_extensions(TLSVersion, CipherSuites,
-                                                       SslOpts, ConnectionStates, Renegotiation),
+                                                       SslOpts, ConnectionStates, 
+                                                       Renegotiation),
     Id = ssl_session:client_id({Host, Port, SslOpts}, Cache, CacheCb, OwnCert),
 
     #client_hello{session_id = Id,
 		  client_version = Version,
-		  cipher_suites = ssl_handshake:cipher_suites(CipherSuites, Renegotiation),
+		  cipher_suites = 
+                      ssl_handshake:cipher_suites(CipherSuites, 
+                                                  Renegotiation, Fallback),
 		  compression_methods = ssl_record:compressions(),
 		  random = SecParams#security_parameters.client_random,
 		  cookie = Cookie,
@@ -87,11 +102,11 @@ hello(#server_hello{server_version = Version, random = Random,
     case dtls_record:is_acceptable_version(Version, SupportedVersions) of
 	true ->
 	    handle_server_hello_extensions(Version, SessionId, Random, CipherSuite,
-					   Compression, HelloExt, SslOpt, ConnectionStates0, Renegotiation);
+					   Compression, HelloExt, SslOpt, 
+                                           ConnectionStates0, Renegotiation);
 	false ->
 	    ?ALERT_REC(?FATAL, ?PROTOCOL_VERSION)
     end;
-
 hello(#client_hello{client_version = ClientVersion} = Hello,
       #ssl_options{versions = Versions} = SslOpts,
       Info, Renegotiation) ->
@@ -107,7 +122,7 @@ cookie(Key, Address, Port, #client_hello{client_version = {Major, Minor},
 		  <<?BYTE(Major), ?BYTE(Minor)>>,
 		  Random, SessionId, CipherSuites, CompressionMethods],
     crypto:hmac(sha, Key, CookieData).
-
+%%--------------------------------------------------------------------
 -spec hello_verify_request(binary(),  dtls_record:dtls_version()) -> #hello_verify_request{}.
 %%
 %% Description: Creates a hello verify request message sent by server to
@@ -117,11 +132,8 @@ hello_verify_request(Cookie, Version) ->
     #hello_verify_request{protocol_version = Version, cookie = Cookie}.
 
 %%--------------------------------------------------------------------
-
-encode_handshake(Handshake, Version, Seq) ->
-    {MsgType, Bin} = enc_handshake(Handshake, Version),
-    Len = byte_size(Bin),
-    [MsgType, ?uint24(Len), ?uint16(Seq), ?uint24(0), ?uint24(Len), Bin].
+%%% Handshake encoding
+%%--------------------------------------------------------------------
 
 fragment_handshake(Bin, _) when is_binary(Bin)-> 
     %% This is the change_cipher_spec not a "real handshake" but part of the flight
@@ -129,10 +141,15 @@ fragment_handshake(Bin, _) when is_binary(Bin)->
 fragment_handshake([MsgType, Len, Seq, _, Len, Bin], Size) ->
     Bins = bin_fragments(Bin, Size),
     handshake_fragments(MsgType, Seq, Len, Bins, []).
+encode_handshake(Handshake, Version, Seq) ->
+    {MsgType, Bin} = enc_handshake(Handshake, Version),
+    Len = byte_size(Bin),
+    [MsgType, ?uint24(Len), ?uint16(Seq), ?uint24(0), ?uint24(Len), Bin].
+  
+%%--------------------------------------------------------------------
+%%% Handshake decodeing
+%%--------------------------------------------------------------------
 
-handshake_bin([Type, Length, Data], Seq) ->	
-    handshake_bin(Type, Length, Seq, Data).
-    
 %%--------------------------------------------------------------------
 -spec get_dtls_handshake(dtls_record:dtls_version(), binary(), #protocol_buffers{}) ->
                                 {[dtls_handshake()], #protocol_buffers{}}.                
@@ -147,16 +164,19 @@ get_dtls_handshake(Version, Fragment, ProtocolBuffers) ->
 %%--------------------------------------------------------------------
 %%% Internal functions
 %%--------------------------------------------------------------------
-handle_client_hello(Version, #client_hello{session_id = SugesstedId,
-					   cipher_suites = CipherSuites,
-					   compression_methods = Compressions,
-					   random = Random,
-					   extensions =
-					       #hello_extensions{elliptic_curves = Curves,
-								 signature_algs = ClientHashSigns} = HelloExt},
+handle_client_hello(Version, 
+                    #client_hello{session_id = SugesstedId,
+                                  cipher_suites = CipherSuites,
+                                  compression_methods = Compressions,
+                                  random = Random,
+                                  extensions =
+                                      #hello_extensions{elliptic_curves = Curves,
+                                                        signature_algs = ClientHashSigns} 
+                                  = HelloExt},
 		    #ssl_options{versions = Versions,
 				 signature_algs = SupportedHashSigns} = SslOpts,
-		    {Port, Session0, Cache, CacheCb, ConnectionStates0, Cert, _}, Renegotiation) ->
+		    {Port, Session0, Cache, CacheCb, ConnectionStates0, Cert, _}, 
+                    Renegotiation) ->
     case dtls_record:is_acceptable_version(Version, Versions) of
 	true ->
 	    TLSVersion = dtls_v1:corresponding_tls_version(Version),
@@ -164,14 +184,15 @@ handle_client_hello(Version, #client_hello{session_id = SugesstedId,
 				   ClientHashSigns, SupportedHashSigns, Cert,TLSVersion),
 	    ECCCurve = ssl_handshake:select_curve(Curves, ssl_handshake:supported_ecc(TLSVersion)),
 	    {Type, #session{cipher_suite = CipherSuite} = Session1}
-		= ssl_handshake:select_session(SugesstedId, CipherSuites, AvailableHashSigns, Compressions,
+		= ssl_handshake:select_session(SugesstedId, CipherSuites, 
+                                               AvailableHashSigns, Compressions,
 					       Port, Session0#session{ecc = ECCCurve}, TLSVersion,
 					       SslOpts, Cache, CacheCb, Cert),
 	    case CipherSuite of
 		no_suite ->
 		    ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY);
 		_ ->
-		    {KeyExAlg,_,_,_} = ssl_cipher:suite_definition(CipherSuite),
+		    #{key_exchange := KeyExAlg} = ssl_cipher:suite_definition(CipherSuite),
 		    case ssl_handshake:select_hashsign(ClientHashSigns, Cert, KeyExAlg, 
 						       SupportedHashSigns, TLSVersion) of
 			#alert{} = Alert ->
@@ -190,7 +211,8 @@ handle_client_hello_extensions(Version, Type, Random, CipherSuites,
 			HelloExt, SslOpts, Session0, ConnectionStates0, Renegotiation, HashSign) ->
     try ssl_handshake:handle_client_hello_extensions(dtls_record, Random, CipherSuites,
 						     HelloExt, dtls_v1:corresponding_tls_version(Version),
-						     SslOpts, Session0, ConnectionStates0, Renegotiation) of
+						     SslOpts, Session0, 
+                                                     ConnectionStates0, Renegotiation) of
 	#alert{} = Alert ->
 	    Alert;
 	{Session, ConnectionStates, Protocol, ServerHelloExt} ->
@@ -212,7 +234,7 @@ handle_server_hello_extensions(Version, SessionId, Random, CipherSuite,
     end.
 
 
-%%%%%%%  Encodeing   %%%%%%%%%%%%%
+%%--------------------------------------------------------------------
 
 enc_handshake(#hello_verify_request{protocol_version = {Major, Minor},
  				       cookie = Cookie}, _Version) ->
@@ -220,7 +242,6 @@ enc_handshake(#hello_verify_request{protocol_version = {Major, Minor},
     {?HELLO_VERIFY_REQUEST, <<?BYTE(Major), ?BYTE(Minor),
  			      ?BYTE(CookieLength),
  			      Cookie:CookieLength/binary>>};
-
 enc_handshake(#hello_request{}, _Version) ->
     {?HELLO_REQUEST, <<>>};
 enc_handshake(#client_hello{client_version = {Major, Minor},
@@ -243,19 +264,29 @@ enc_handshake(#client_hello{client_version = {Major, Minor},
 		      ?BYTE(CookieLength), Cookie/binary,
 		      ?UINT16(CsLength), BinCipherSuites/binary,
  		      ?BYTE(CmLength), BinCompMethods/binary, ExtensionsBin/binary>>};
-
 enc_handshake(#server_hello{} = HandshakeMsg, Version) ->
     {Type, <<?BYTE(Major), ?BYTE(Minor), Rest/binary>>} = 
 	ssl_handshake:encode_handshake(HandshakeMsg, Version),
     {DTLSMajor, DTLSMinor} = dtls_v1:corresponding_dtls_version({Major, Minor}),
     {Type,  <<?BYTE(DTLSMajor), ?BYTE(DTLSMinor), Rest/binary>>};
-
 enc_handshake(HandshakeMsg, Version) ->
     ssl_handshake:encode_handshake(HandshakeMsg, dtls_v1:corresponding_tls_version(Version)).
 
+handshake_bin(#handshake_fragment{
+		 type = Type,
+		 length = Len, 
+		 message_seq = Seq,
+		 fragment_length = Len,
+		 fragment_offset = 0,
+		 fragment = Fragment}) ->	    
+    handshake_bin(Type, Len, Seq, Fragment).
+handshake_bin(Type, Length, Seq, FragmentData) -> 
+    <<?BYTE(Type), ?UINT24(Length),
+      ?UINT16(Seq), ?UINT24(0), ?UINT24(Length),
+      FragmentData:Length/binary>>.  
+  
 bin_fragments(Bin, Size) ->
      bin_fragments(Bin, size(Bin), Size, 0, []).
-
 bin_fragments(Bin, BinSize,  FragSize, Offset, Fragments) ->
     case (BinSize - Offset - FragSize)  > 0 of
 	true ->
@@ -279,7 +310,7 @@ address_to_bin({A,B,C,D}, Port) ->
 address_to_bin({A,B,C,D,E,F,G,H}, Port) ->
     <<A:16,B:16,C:16,D:16,E:16,F:16,G:16,H:16,Port:16>>.
 
-%%%%%%%  Decodeing   %%%%%%%%%%%%%
+%%--------------------------------------------------------------------
 
 handle_fragments(Version, FragmentData, Buffers0, Acc) ->
     Fragments = decode_handshake_fragments(FragmentData),
@@ -322,7 +353,6 @@ decode_handshake(_Version, ?CLIENT_HELLO, <<?UINT24(_), ?UINT16(_),
        compression_methods = Comp_methods,
        extensions = DecodedExtensions
       };
-
 decode_handshake(_Version, ?HELLO_VERIFY_REQUEST, <<?UINT24(_), ?UINT16(_),
 						    ?UINT24(_),  ?UINT24(_),
 						    ?BYTE(Major), ?BYTE(Minor),
@@ -330,7 +360,6 @@ decode_handshake(_Version, ?HELLO_VERIFY_REQUEST, <<?UINT24(_), ?UINT16(_),
 						    Cookie:CookieLength/binary>>) ->
     #hello_verify_request{protocol_version = {Major, Minor},
 			  cookie = Cookie};
-
 decode_handshake(Version, Tag,  <<?UINT24(_), ?UINT16(_),
 				  ?UINT24(_),  ?UINT24(_), Msg/binary>>) -> 
     %% DTLS specifics stripped
@@ -370,9 +399,10 @@ reassemble(Version,  #handshake_fragment{message_seq = Seq} = Fragment,
     end;
 reassemble(_,  #handshake_fragment{message_seq = FragSeq} = Fragment, 
 	   #protocol_buffers{dtls_handshake_next_seq = Seq,
-			     dtls_handshake_later_fragments = LaterFragments} = Buffers0) when FragSeq > Seq-> 
-     {more_data,
-      Buffers0#protocol_buffers{dtls_handshake_later_fragments = [Fragment | LaterFragments]}};
+			     dtls_handshake_later_fragments = LaterFragments} 
+           = Buffers0) when FragSeq > Seq-> 
+    {more_data,
+     Buffers0#protocol_buffers{dtls_handshake_later_fragments = [Fragment | LaterFragments]}};
 reassemble(_, _, Buffers) -> 
     %% Disregard fragments FragSeq < Seq
     {more_data, Buffers}.
@@ -396,26 +426,6 @@ merge_fragment(Frag0, [Frag1 | Rest]) ->
 	Frag ->
 	    merge_fragment(Frag, Rest)
     end.
-
-is_complete_handshake(#handshake_fragment{length = Length, fragment_length = Length}) ->
-    true;
-is_complete_handshake(_) ->
-    false.
-
-next_fragments(LaterFragments) ->
-    case lists:keysort(#handshake_fragment.message_seq, LaterFragments) of
-	[] ->
-	    {[], []}; 
-	[#handshake_fragment{message_seq = Seq} | _] = Fragments ->
-	    split_frags(Fragments, Seq, [])
-    end.
-
-split_frags([#handshake_fragment{message_seq = Seq} = Frag | Rest], Seq, Acc) ->
-    split_frags(Rest, Seq, [Frag | Acc]);
-split_frags(Frags, _, Acc) ->
-    {lists:reverse(Acc), Frags}.
-
-
 %% Duplicate
 merge_fragments(#handshake_fragment{
 		   fragment_offset = PreviousOffSet, 
@@ -486,17 +496,26 @@ merge_fragments(#handshake_fragment{
 %% No merge there is a gap
 merge_fragments(Previous, Current) ->
     [Previous, Current].
-	    
-handshake_bin(#handshake_fragment{
-		 type = Type,
-		 length = Len, 
-		 message_seq = Seq,
-		 fragment_length = Len,
-		 fragment_offset = 0,
-		 fragment = Fragment}) ->	    
-    handshake_bin(Type, Len, Seq, Fragment).
 
-handshake_bin(Type, Length, Seq, FragmentData) -> 
-    <<?BYTE(Type), ?UINT24(Length),
-      ?UINT16(Seq), ?UINT24(0), ?UINT24(Length),
-      FragmentData:Length/binary>>.  
+next_fragments(LaterFragments) ->
+    case lists:keysort(#handshake_fragment.message_seq, LaterFragments) of
+	[] ->
+	    {[], []}; 
+	[#handshake_fragment{message_seq = Seq} | _] = Fragments ->
+	    split_frags(Fragments, Seq, [])
+    end.
+
+split_frags([#handshake_fragment{message_seq = Seq} = Frag | Rest], Seq, Acc) ->
+    split_frags(Rest, Seq, [Frag | Acc]);
+split_frags(Frags, _, Acc) ->
+    {lists:reverse(Acc), Frags}.
+
+is_complete_handshake(#handshake_fragment{length = Length, fragment_length = Length}) ->
+    true;
+is_complete_handshake(_) ->
+    false.
+
+
+
+
+	    
diff --git a/lib/ssl/src/dtls_record.erl b/lib/ssl/src/dtls_record.erl
index a8520717e5..2dcc6efc91 100644
--- a/lib/ssl/src/dtls_record.erl
+++ b/lib/ssl/src/dtls_record.erl
@@ -32,13 +32,15 @@
 %% Handling of incoming data
 -export([get_dtls_records/2,  init_connection_states/2, empty_connection_state/1]).
 
-%% Decoding
--export([decode_cipher_text/2]).
+-export([save_current_connection_state/2, next_epoch/2, get_connection_state_by_epoch/3, replay_detect/2,
+         init_connection_state_seq/2, current_connection_state_epoch/2]).
 
 %% Encoding
 -export([encode_handshake/4, encode_alert_record/3,
-	 encode_change_cipher_spec/3, encode_data/3]).
--export([encode_plain_text/5]).
+	 encode_change_cipher_spec/3, encode_data/3, encode_plain_text/5]).
+
+%% Decoding
+-export([decode_cipher_text/2]).
 
 %% Protocol version handling
 -export([protocol_version/1, lowest_protocol_version/1, lowest_protocol_version/2,
@@ -46,9 +48,6 @@
 	 is_higher/2, supported_protocol_versions/0,
 	 is_acceptable_version/2, hello_version/2]).
 
--export([save_current_connection_state/2, next_epoch/2, get_connection_state_by_epoch/3, replay_detect/2]).
-
--export([init_connection_state_seq/2, current_connection_state_epoch/2]).
 
 -export_type([dtls_version/0, dtls_atom_version/0]).
 
@@ -60,7 +59,7 @@
 -compile(inline).
 
 %%====================================================================
-%% Internal application API
+%%  Handling of incoming data
 %%====================================================================
 %%--------------------------------------------------------------------
 -spec init_connection_states(client | server, one_n_minus_one | zero_n | disabled) ->
@@ -86,7 +85,6 @@ init_connection_states(Role, BeastMitigation) ->
 empty_connection_state(Empty) ->    
     Empty#{epoch => undefined, replay_window => init_replay_window(?REPLAY_WINDOW_SIZE)}.
 
-
 %%--------------------------------------------------------------------
 -spec save_current_connection_state(ssl_record:connection_states(), read | write) ->
 				      ssl_record:connection_states().
@@ -137,6 +135,34 @@ set_connection_state_by_epoch(ReadState, Epoch, #{saved_read := #{epoch := Epoch
     States#{saved_read := ReadState}.
 
 %%--------------------------------------------------------------------
+-spec init_connection_state_seq(dtls_version(), ssl_record:connection_states()) ->
+				       ssl_record:connection_state().
+%%
+%% Description: Copy the read sequence number to the write sequence number
+%% This is only valid for DTLS in the first client_hello
+%%--------------------------------------------------------------------
+init_connection_state_seq({254, _},
+			  #{current_read := #{epoch := 0, sequence_number := Seq},
+			    current_write := #{epoch := 0} = Write} = ConnnectionStates0) ->
+    ConnnectionStates0#{current_write => Write#{sequence_number => Seq}};
+init_connection_state_seq(_, ConnnectionStates) ->
+    ConnnectionStates.
+
+%%--------------------------------------------------------
+-spec current_connection_state_epoch(ssl_record:connection_states(), read | write) ->
+					    integer().
+%%
+%% Description: Returns the epoch the connection_state record
+%% that is currently defined as the current connection state.
+%%--------------------------------------------------------------------
+current_connection_state_epoch(#{current_read := #{epoch := Epoch}},
+			       read) ->
+    Epoch;
+current_connection_state_epoch(#{current_write := #{epoch := Epoch}},
+			       write) ->
+    Epoch.
+
+%%--------------------------------------------------------------------
 -spec get_dtls_records(binary(), binary()) -> {[binary()], binary()} | #alert{}.
 %%
 %% Description: Given old buffer and new data from UDP/SCTP, packs up a records
@@ -148,55 +174,10 @@ get_dtls_records(Data, <<>>) ->
 get_dtls_records(Data, Buffer) ->
     get_dtls_records_aux(list_to_binary([Buffer, Data]), []).
 
-get_dtls_records_aux(<<?BYTE(?APPLICATION_DATA),?BYTE(MajVer),?BYTE(MinVer),
-		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
-		       ?UINT16(Length), Data:Length/binary, Rest/binary>>,
-		     Acc) ->
-    get_dtls_records_aux(Rest, [#ssl_tls{type = ?APPLICATION_DATA,
-					 version = {MajVer, MinVer},
-					 epoch = Epoch, sequence_number = SequenceNumber,
-					 fragment = Data} | Acc]);
-get_dtls_records_aux(<<?BYTE(?HANDSHAKE),?BYTE(MajVer),?BYTE(MinVer),
-		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
-		       ?UINT16(Length),
-		       Data:Length/binary, Rest/binary>>, Acc) when MajVer >= 128 ->
-    get_dtls_records_aux(Rest, [#ssl_tls{type = ?HANDSHAKE,
-					 version = {MajVer, MinVer},
-					 epoch = Epoch, sequence_number = SequenceNumber,
-					 fragment = Data} | Acc]);
-get_dtls_records_aux(<<?BYTE(?ALERT),?BYTE(MajVer),?BYTE(MinVer),
-		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
-		       ?UINT16(Length), Data:Length/binary,
-		       Rest/binary>>, Acc) ->
-    get_dtls_records_aux(Rest, [#ssl_tls{type = ?ALERT,
-					 version = {MajVer, MinVer},
-					 epoch = Epoch, sequence_number = SequenceNumber,
-					 fragment = Data} | Acc]);
-get_dtls_records_aux(<<?BYTE(?CHANGE_CIPHER_SPEC),?BYTE(MajVer),?BYTE(MinVer),
-		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
-		       ?UINT16(Length), Data:Length/binary, Rest/binary>>,
-		     Acc) ->
-    get_dtls_records_aux(Rest, [#ssl_tls{type = ?CHANGE_CIPHER_SPEC,
-					 version = {MajVer, MinVer},
-					 epoch = Epoch, sequence_number = SequenceNumber,
-					 fragment = Data} | Acc]);
 
-get_dtls_records_aux(<<0:1, _CT:7, ?BYTE(_MajVer), ?BYTE(_MinVer),
-		       ?UINT16(Length), _/binary>>,
-		     _Acc) when Length > ?MAX_CIPHER_TEXT_LENGTH ->
-    ?ALERT_REC(?FATAL, ?RECORD_OVERFLOW);
-
-get_dtls_records_aux(<<1:1, Length0:15, _/binary>>,_Acc)
-  when Length0 > ?MAX_CIPHER_TEXT_LENGTH ->
-    ?ALERT_REC(?FATAL, ?RECORD_OVERFLOW);
-
-get_dtls_records_aux(Data, Acc) ->
-    case size(Data) =< ?MAX_CIPHER_TEXT_LENGTH + ?INITIAL_BYTES of
-	true ->
-	    {lists:reverse(Acc), Data};
-	false ->
-	    ?ALERT_REC(?FATAL, ?UNEXPECTED_MESSAGE)
-    end.
+%%====================================================================
+%% Encoding DTLS records
+%%====================================================================
 
 %%--------------------------------------------------------------------
 -spec encode_handshake(iolist(), dtls_version(), integer(), ssl_record:connection_states()) ->
@@ -245,11 +226,19 @@ encode_plain_text(Type, Version, Epoch, Data, ConnectionStates) ->
     {CipherText, Write} = encode_dtls_cipher_text(Type, Version, CipherFragment, Write1),
     {CipherText, set_connection_state_by_epoch(Write, Epoch, ConnectionStates, write)}.
 
+%%====================================================================
+%% Decoding 
+%%====================================================================
 
 decode_cipher_text(#ssl_tls{epoch = Epoch} = CipherText, ConnnectionStates0) ->
     ReadState = get_connection_state_by_epoch(Epoch, ConnnectionStates0, read),
     decode_cipher_text(CipherText, ReadState, ConnnectionStates0).
 
+
+%%====================================================================
+%% Protocol version handling
+%%====================================================================
+
 %%--------------------------------------------------------------------
 -spec protocol_version(dtls_atom_version() | dtls_version()) ->
 			      dtls_version() | dtls_atom_version().
@@ -381,35 +370,6 @@ supported_protocol_versions([_|_] = Vsns) ->
 is_acceptable_version(Version, Versions) ->
     lists:member(Version, Versions).
 
-
-%%--------------------------------------------------------------------
--spec init_connection_state_seq(dtls_version(), ssl_record:connection_states()) ->
-				       ssl_record:connection_state().
-%%
-%% Description: Copy the read sequence number to the write sequence number
-%% This is only valid for DTLS in the first client_hello
-%%--------------------------------------------------------------------
-init_connection_state_seq({254, _},
-			  #{current_read := #{epoch := 0, sequence_number := Seq},
-			    current_write := #{epoch := 0} = Write} = ConnnectionStates0) ->
-    ConnnectionStates0#{current_write => Write#{sequence_number => Seq}};
-init_connection_state_seq(_, ConnnectionStates) ->
-    ConnnectionStates.
-
-%%--------------------------------------------------------
--spec current_connection_state_epoch(ssl_record:connection_states(), read | write) ->
-					    integer().
-%%
-%% Description: Returns the epoch the connection_state record
-%% that is currently defined as the current connection state.
-%%--------------------------------------------------------------------
-current_connection_state_epoch(#{current_read := #{epoch := Epoch}},
-			       read) ->
-    Epoch;
-current_connection_state_epoch(#{current_write := #{epoch := Epoch}},
-			       write) ->
-    Epoch.
-
 -spec hello_version(dtls_version(), [dtls_version()]) -> dtls_version().
 hello_version(Version, Versions) ->
     case dtls_v1:corresponding_tls_version(Version) of
@@ -438,15 +398,93 @@ initial_connection_state(ConnectionEnd, BeastMitigation) ->
       server_verify_data => undefined
      }.
 
-lowest_list_protocol_version(Ver, []) ->
-    Ver;
-lowest_list_protocol_version(Ver1,  [Ver2 | Rest]) ->
-    lowest_list_protocol_version(lowest_protocol_version(Ver1, Ver2), Rest).
+get_dtls_records_aux(<<?BYTE(?APPLICATION_DATA),?BYTE(MajVer),?BYTE(MinVer),
+		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
+		       ?UINT16(Length), Data:Length/binary, Rest/binary>>,
+		     Acc) ->
+    get_dtls_records_aux(Rest, [#ssl_tls{type = ?APPLICATION_DATA,
+					 version = {MajVer, MinVer},
+					 epoch = Epoch, sequence_number = SequenceNumber,
+					 fragment = Data} | Acc]);
+get_dtls_records_aux(<<?BYTE(?HANDSHAKE),?BYTE(MajVer),?BYTE(MinVer),
+		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
+		       ?UINT16(Length),
+		       Data:Length/binary, Rest/binary>>, Acc) when MajVer >= 128 ->
+    get_dtls_records_aux(Rest, [#ssl_tls{type = ?HANDSHAKE,
+					 version = {MajVer, MinVer},
+					 epoch = Epoch, sequence_number = SequenceNumber,
+					 fragment = Data} | Acc]);
+get_dtls_records_aux(<<?BYTE(?ALERT),?BYTE(MajVer),?BYTE(MinVer),
+		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
+		       ?UINT16(Length), Data:Length/binary,
+		       Rest/binary>>, Acc) ->
+    get_dtls_records_aux(Rest, [#ssl_tls{type = ?ALERT,
+					 version = {MajVer, MinVer},
+					 epoch = Epoch, sequence_number = SequenceNumber,
+					 fragment = Data} | Acc]);
+get_dtls_records_aux(<<?BYTE(?CHANGE_CIPHER_SPEC),?BYTE(MajVer),?BYTE(MinVer),
+		       ?UINT16(Epoch), ?UINT48(SequenceNumber),
+		       ?UINT16(Length), Data:Length/binary, Rest/binary>>,
+		     Acc) ->
+    get_dtls_records_aux(Rest, [#ssl_tls{type = ?CHANGE_CIPHER_SPEC,
+					 version = {MajVer, MinVer},
+					 epoch = Epoch, sequence_number = SequenceNumber,
+					 fragment = Data} | Acc]);
 
-highest_list_protocol_version(Ver, []) ->
-    Ver;
-highest_list_protocol_version(Ver1,  [Ver2 | Rest]) ->
-    highest_list_protocol_version(highest_protocol_version(Ver1, Ver2), Rest).
+get_dtls_records_aux(<<0:1, _CT:7, ?BYTE(_MajVer), ?BYTE(_MinVer),
+		       ?UINT16(Length), _/binary>>,
+		     _Acc) when Length > ?MAX_CIPHER_TEXT_LENGTH ->
+    ?ALERT_REC(?FATAL, ?RECORD_OVERFLOW);
+
+get_dtls_records_aux(<<1:1, Length0:15, _/binary>>,_Acc)
+  when Length0 > ?MAX_CIPHER_TEXT_LENGTH ->
+    ?ALERT_REC(?FATAL, ?RECORD_OVERFLOW);
+
+get_dtls_records_aux(Data, Acc) ->
+    case size(Data) =< ?MAX_CIPHER_TEXT_LENGTH + ?INITIAL_BYTES of
+	true ->
+	    {lists:reverse(Acc), Data};
+	false ->
+	    ?ALERT_REC(?FATAL, ?UNEXPECTED_MESSAGE)
+    end.
+%%--------------------------------------------------------------------
+
+init_replay_window(Size) ->
+    #{size => Size,
+      top => Size,
+      bottom => 0,
+      mask => 0 bsl 64
+     }.
+
+replay_detect(#ssl_tls{sequence_number = SequenceNumber}, #{replay_window := Window}) ->
+    is_replay(SequenceNumber, Window).
+
+
+is_replay(SequenceNumber, #{bottom := Bottom}) when SequenceNumber < Bottom ->
+    true;
+is_replay(SequenceNumber, #{size := Size,
+                            top := Top,
+                            bottom := Bottom,
+                            mask :=  Mask})  when (SequenceNumber >= Bottom) andalso (SequenceNumber =< Top) ->
+    Index = (SequenceNumber rem Size),
+    (Index band Mask) == 1;
+
+is_replay(_, _) ->
+    false.
+
+update_replay_window(SequenceNumber,  #{replay_window := #{size := Size,
+                                                           top := Top,
+                                                           bottom := Bottom,
+                                                           mask :=  Mask0} = Window0} = ConnectionStates) ->
+    NoNewBits = SequenceNumber - Top,
+    Index = SequenceNumber rem Size,
+    Mask = (Mask0 bsl NoNewBits) bor Index,
+    Window =  Window0#{top => SequenceNumber,
+                       bottom => Bottom + NoNewBits,
+                       mask => Mask},
+    ConnectionStates#{replay_window := Window}.
+
+%%--------------------------------------------------------------------
 
 encode_dtls_cipher_text(Type, {MajVer, MinVer}, Fragment, 
 		       #{epoch := Epoch, sequence_number := Seq} = WriteState) ->
@@ -490,6 +528,7 @@ encode_plain_text(Type, Version, Fragment, #{compression_state := CompS0,
 	ssl_cipher:cipher(BulkCipherAlgo, CipherS0, MAC, Fragment, TLSVersion),
     {CipherFragment,  WriteState0#{cipher_state => CipherS1}}.
 
+%%--------------------------------------------------------------------
 decode_cipher_text(#ssl_tls{type = Type, version = Version,
 			    epoch = Epoch,
 			    sequence_number = Seq,
@@ -541,6 +580,7 @@ decode_cipher_text(#ssl_tls{type = Type, version = Version,
 	false ->
 	    ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
     end.
+%%--------------------------------------------------------------------
 
 calc_mac_hash(Type, Version, #{mac_secret := MacSecret,
 			       security_parameters := #security_parameters{mac_algorithm = MacAlg}},
@@ -549,16 +589,6 @@ calc_mac_hash(Type, Version, #{mac_secret := MacSecret,
     mac_hash(Version, MacAlg, MacSecret, Epoch, SeqNo, Type,
 	     Length, Fragment).
 
-highest_protocol_version() ->
-    highest_protocol_version(supported_protocol_versions()).
-
-lowest_protocol_version() ->
-    lowest_protocol_version(supported_protocol_versions()).
-
-sufficient_dtlsv1_2_crypto_support() ->
-    CryptoSupport = crypto:supports(),
-    proplists:get_bool(sha256, proplists:get_value(hashs, CryptoSupport)).
-
 mac_hash({Major, Minor}, MacAlg, MacSecret, Epoch, SeqNo, Type, Length, Fragment) ->
     Value = [<<?UINT16(Epoch), ?UINT48(SeqNo), ?BYTE(Type),
        ?BYTE(Major), ?BYTE(Minor), ?UINT16(Length)>>,
@@ -568,37 +598,25 @@ mac_hash({Major, Minor}, MacAlg, MacSecret, Epoch, SeqNo, Type, Length, Fragment
 calc_aad(Type, {MajVer, MinVer}, Epoch, SeqNo) ->
     <<?UINT16(Epoch), ?UINT48(SeqNo), ?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer)>>.
 
-init_replay_window(Size) ->
-    #{size => Size,
-      top => Size,
-      bottom => 0,
-      mask => 0 bsl 64
-     }.
+%%--------------------------------------------------------------------
 
-replay_detect(#ssl_tls{sequence_number = SequenceNumber}, #{replay_window := Window}) ->
-    is_replay(SequenceNumber, Window).
+lowest_list_protocol_version(Ver, []) ->
+    Ver;
+lowest_list_protocol_version(Ver1,  [Ver2 | Rest]) ->
+    lowest_list_protocol_version(lowest_protocol_version(Ver1, Ver2), Rest).
 
+highest_list_protocol_version(Ver, []) ->
+    Ver;
+highest_list_protocol_version(Ver1,  [Ver2 | Rest]) ->
+    highest_list_protocol_version(highest_protocol_version(Ver1, Ver2), Rest).
 
-is_replay(SequenceNumber, #{bottom := Bottom}) when SequenceNumber < Bottom ->
-    true;
-is_replay(SequenceNumber, #{size := Size,
-                            top := Top,
-                            bottom := Bottom,
-                            mask :=  Mask})  when (SequenceNumber >= Bottom) andalso (SequenceNumber =< Top) ->
-    Index = (SequenceNumber rem Size),
-    (Index band Mask) == 1;
+highest_protocol_version() ->
+    highest_protocol_version(supported_protocol_versions()).
 
-is_replay(_, _) ->
-    false.
+lowest_protocol_version() ->
+    lowest_protocol_version(supported_protocol_versions()).
+
+sufficient_dtlsv1_2_crypto_support() ->
+    CryptoSupport = crypto:supports(),
+    proplists:get_bool(sha256, proplists:get_value(hashs, CryptoSupport)).
 
-update_replay_window(SequenceNumber,  #{replay_window := #{size := Size,
-                                                           top := Top,
-                                                           bottom := Bottom,
-                                                           mask :=  Mask0} = Window0} = ConnectionStates) ->
-    NoNewBits = SequenceNumber - Top,
-    Index = SequenceNumber rem Size,
-    Mask = (Mask0 bsl NoNewBits) bor Index,
-    Window =  Window0#{top => SequenceNumber,
-                       bottom => Bottom + NoNewBits,
-                       mask => Mask},
-    ConnectionStates#{replay_window := Window}.
diff --git a/lib/ssl/src/dtls_socket.erl b/lib/ssl/src/dtls_socket.erl
index 5f854fbb4b..0e4ab089dc 100644
--- a/lib/ssl/src/dtls_socket.erl
+++ b/lib/ssl/src/dtls_socket.erl
@@ -24,7 +24,7 @@
 
 -export([send/3, listen/3, accept/3, connect/4, socket/4, setopts/3, getopts/3, getstat/3, 
 	 peername/2, sockname/2, port/2, close/2]).
--export([emulated_options/0, internal_inet_values/0, default_inet_values/0, default_cb_info/0]).
+-export([emulated_options/0, emulated_options/1, internal_inet_values/0, default_inet_values/0, default_cb_info/0]).
 
 send(Transport, {{IP,Port},Socket}, Data) ->
     Transport:send(Socket, IP, Port, Data).
@@ -133,6 +133,9 @@ port(Transport, Socket) ->
 emulated_options() ->
     [mode, active,  packet, packet_size].
 
+emulated_options(Opts) ->
+      emulated_options(Opts, internal_inet_values(), default_inet_values()).
+
 internal_inet_values() ->
     [{active, false}, {mode,binary}].
 
@@ -158,3 +161,29 @@ emulated_socket_options(InetValues, #socket_options{
        packet_size = proplists:get_value(packet_size, InetValues, PacketSize),
        active = proplists:get_value(active, InetValues, Active)
       }.
+
+emulated_options([{mode, Value} = Opt |Opts], Inet, Emulated) ->
+    validate_inet_option(mode, Value),
+    emulated_options(Opts, Inet, [Opt | proplists:delete(mode, Emulated)]);
+emulated_options([{header, _} = Opt | _], _, _) ->
+    throw({error, {options, {not_supported, Opt}}});
+emulated_options([{active, Value} = Opt |Opts], Inet, Emulated) ->
+    validate_inet_option(active, Value),
+    emulated_options(Opts, Inet, [Opt | proplists:delete(active, Emulated)]);
+emulated_options([{packet, _} = Opt | _], _, _) ->
+    throw({error, {options, {not_supported, Opt}}});
+emulated_options([{packet_size, _} = Opt | _], _, _) ->
+    throw({error, {options, {not_supported, Opt}}});
+emulated_options([Opt|Opts], Inet, Emulated) ->
+    emulated_options(Opts, [Opt|Inet], Emulated);
+emulated_options([], Inet,Emulated) ->
+    {Inet, Emulated}.
+
+validate_inet_option(mode, Value)
+  when Value =/= list, Value =/= binary ->
+    throw({error, {options, {mode,Value}}});
+validate_inet_option(active, Value)
+  when Value =/= true, Value =/= false, Value =/= once ->
+    throw({error, {options, {active,Value}}});
+validate_inet_option(_, _) ->
+    ok.
diff --git a/lib/ssl/src/inet_tls_dist.erl b/lib/ssl/src/inet_tls_dist.erl
index d644cbe66a..8e605bec65 100644
--- a/lib/ssl/src/inet_tls_dist.erl
+++ b/lib/ssl/src/inet_tls_dist.erl
@@ -324,12 +324,13 @@ do_accept(Driver, Kernel, AcceptPid, DistCtrl, MyNode, Allowed, SetupTime) ->
                           timer = Timer,
                           this_flags = 0,
                           allowed = Allowed},
+                    link(DistCtrl),
 		    dist_util:handshake_other_started(trace(HSData));
 		{false,IP} ->
 		    error_logger:error_msg(
                       "** Connection attempt from "
                       "disallowed IP ~w ** ~n", [IP]),
-		    ?shutdown(trace(no_node))
+		    ?shutdown2(no_node, trace({disallowed, IP}))
 	    end
     end.
 
@@ -357,10 +358,14 @@ do_setup(Driver, Kernel, Node, Type, MyNode, LongOrShortNames, SetupTime) ->
 	    ErlEpmd = net_kernel:epmd_module(),
 	    case ErlEpmd:port_please(Name, Ip) of
 		{port, TcpPort, Version} ->
-                    Opts = trace(connect_options(get_ssl_options(client))),
+                    Opts =
+                        trace(
+                          connect_options(
+                            [{server_name_indication, atom_to_list(Node)}
+                             |get_ssl_options(client)])),
 		    dist_util:reset_timer(Timer),
                     case ssl:connect(
-                           Ip, TcpPort,
+                           Address, TcpPort,
                            [binary, {active, false}, {packet, 4},
                             Driver:family(), nodelay()] ++ Opts,
                            net_kernel:connecttime()) of
@@ -378,21 +383,26 @@ do_setup(Driver, Kernel, Node, Type, MyNode, LongOrShortNames, SetupTime) ->
                                   this_flags = 0,
                                   other_version = Version,
                                   request_type = Type},
+                            link(DistCtrl),
 			    dist_util:handshake_we_started(trace(HSData));
 			Other ->
 			    %% Other Node may have closed since 
 			    %% port_please !
 			    ?shutdown2(
                                Node,
-                               trace({shutdown, {connect_failed, Other}}))
+                               trace(
+                                 {ssl_connect_failed, Ip, TcpPort, Other}))
 		    end;
 		Other ->
 		    ?shutdown2(
                        Node,
-                       trace({shutdown, {port_please_failed, Other}}))
+                       trace(
+                         {port_please_failed, ErlEpmd, Name, Ip, Other}))
 	    end;
 	Other ->
-	    ?shutdown2(Node, trace({shutdown, {getaddr_failed, Other}}))
+	    ?shutdown2(
+               Node,
+               trace({getaddr_failed, Driver, Address, Other}))
     end.
 
 close(Socket) ->
@@ -411,8 +421,9 @@ check_ip(Driver, SslSocket) ->
 	    case get_ifs(SslSocket) of
 		{ok, IFs, IP} ->
 		    check_ip(Driver, IFs, IP);
-		_ ->
-		    ?shutdown(no_node)
+		Other ->
+		    ?shutdown2(
+                       no_node, trace({check_ip_failed, SslSocket, Other}))
 	    end;
 	_ ->
 	    true
@@ -441,23 +452,22 @@ get_ifs(#sslsocket{fd = {gen_tcp, Socket, _}}) ->
 
 %% If Node is illegal terminate the connection setup!!
 splitnode(Driver, Node, LongOrShortNames) ->
-    case split_node(atom_to_list(Node), $@, []) of
-	[Name|Tail] when Tail =/= [] ->
-	    Host = lists:append(Tail),
+    case string:split(atom_to_list(Node), "@") of
+	[Name, Host] when Host =/= [] ->
 	    check_node(Driver, Name, Node, Host, LongOrShortNames);
 	[_] ->
 	    error_logger:error_msg(
               "** Nodename ~p illegal, no '@' character **~n",
               [Node]),
-	    ?shutdown(Node);
+	    ?shutdown2(Node, trace({illegal_node_n@me, Node}));
 	_ ->
 	    error_logger:error_msg(
               "** Nodename ~p illegal **~n", [Node]),
-	    ?shutdown(Node)
+	    ?shutdown2(Node, trace({illegal_node_name, Node}))
     end.
 
 check_node(Driver, Name, Node, Host, LongOrShortNames) ->
-    case split_node(Host, $., []) of
+    case string:split(Host, ".") of
 	[_] when LongOrShortNames == longnames ->
 	    case Driver:parse_address(Host) of
 		{ok, _} ->
@@ -468,35 +478,28 @@ check_node(Driver, Name, Node, Host, LongOrShortNames) ->
                       "fully qualified hostnames **~n"
                       "** Hostname ~s is illegal **~n",
                       [Host]),
-		    ?shutdown(Node)
+		    ?shutdown2(Node, trace({not_longnames, Host}))
 	    end;
-	[_, _ | _] when LongOrShortNames == shortnames ->
+	[_, _] when LongOrShortNames == shortnames ->
 	    error_logger:error_msg(
               "** System NOT running to use "
               "fully qualified hostnames **~n"
               "** Hostname ~s is illegal **~n",
               [Host]),
-	    ?shutdown(Node);
+	    ?shutdown2(Node, trace({not_shortnames, Host}));
 	_ ->
 	    [Name, Host]
     end.
 
 split_node(Node) when is_atom(Node) ->
-    case split_node(atom_to_list(Node), $@, []) of
-        [_, Host] ->
+    case string:split(atom_to_list(Node), "@") of
+        [Name, Host] when Name =/= [], Host =/= [] ->
             Host;
         _ ->
             false
     end;
 split_node(_) ->
     false.
-%%
-split_node([Chr|T], Chr, Ack) -> 
-    [lists:reverse(Ack)|split_node(T, Chr, [])];
-split_node([H|T], Chr, Ack) -> 
-    split_node(T, Chr, [H|Ack]);
-split_node([], _, Ack) -> 
-    [lists:reverse(Ack)].
 
 %% -------------------------------------------------------------------------
 
@@ -524,6 +527,17 @@ nodelay() ->
 
 
 get_ssl_options(Type) ->
+    try ets:lookup(ssl_dist_opts, Type) of
+        [{Type, Opts}] ->
+            [{erl_dist, true} | Opts];
+        _ ->
+            get_ssl_dist_arguments(Type)
+    catch
+        error:badarg ->
+            get_ssl_dist_arguments(Type)
+    end.
+
+get_ssl_dist_arguments(Type) ->
     case init:get_argument(ssl_dist_opt) of
 	{ok, Args} ->
 	    [{erl_dist, true} | ssl_options(Type, lists:append(Args))];
diff --git a/lib/ssl/src/ssl.app.src b/lib/ssl/src/ssl.app.src
index c5b55641a1..3c6cd254c1 100644
--- a/lib/ssl/src/ssl.app.src
+++ b/lib/ssl/src/ssl.app.src
@@ -63,4 +63,4 @@
     {env, []},
     {mod, {ssl_app, []}},
     {runtime_dependencies, ["stdlib-3.2","public_key-1.5","kernel-6.0",
-			    "erts-10.0","crypto-3.3", "inets-5.10.7"]}]}.
+			    "erts-10.0","crypto-4.2", "inets-5.10.7"]}]}.
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl
index 4e592c02ec..656ed94ea5 100644
--- a/lib/ssl/src/ssl.erl
+++ b/lib/ssl/src/ssl.erl
@@ -374,13 +374,12 @@ negotiated_protocol(#sslsocket{pid = Pid}) ->
     ssl_connection:negotiated_protocol(Pid).
 
 %%--------------------------------------------------------------------
--spec cipher_suites() -> [ssl_cipher:erl_cipher_suite()] | [string()].
+-spec cipher_suites() -> [ssl_cipher:old_erl_cipher_suite()] | [string()].
 %%--------------------------------------------------------------------
 cipher_suites() ->
     cipher_suites(erlang).
 %%--------------------------------------------------------------------
--spec cipher_suites(erlang | openssl | all) -> [ssl_cipher:erl_cipher_suite()] |
-					       [string()].
+-spec cipher_suites(erlang | openssl | all) -> [ssl_cipher:old_erl_cipher_suite() | string()].
 %% Description: Returns all supported cipher suites.
 %%--------------------------------------------------------------------
 cipher_suites(erlang) ->
@@ -896,7 +895,8 @@ validate_option(key, {KeyType, Value}) when is_binary(Value),
 					    KeyType == 'ECPrivateKey';
 					    KeyType == 'PrivateKeyInfo' ->
     {KeyType, Value};
-
+validate_option(key, #{algorithm := _} = Value) ->
+    Value;
 validate_option(keyfile, undefined) ->
    <<>>;
 validate_option(keyfile, Value) when is_binary(Value) ->
@@ -991,19 +991,23 @@ validate_option(next_protocols_advertised, Value) when is_list(Value) ->
     Value;
 validate_option(next_protocols_advertised, undefined) ->
     undefined;
-validate_option(server_name_indication = Opt, Value) when is_list(Value) ->
+validate_option(server_name_indication, Value) when is_list(Value) ->
     %% RFC 6066, Section 3: Currently, the only server names supported are
     %% DNS hostnames
-     case inet_parse:domain(Value) of
-        false -> 
-           throw({error, {options, {{Opt, Value}}}});
-        true -> 
-            Value
-     end;
-validate_option(server_name_indication, undefined = Value) ->
+    %% case inet_parse:domain(Value) of
+    %%     false ->
+    %%         throw({error, {options, {{Opt, Value}}}});
+    %%     true ->
+    %%         Value
+    %% end;
+    %%
+    %% But the definition seems very diffuse, so let all strings through
+    %% and leave it up to public_key to decide...
     Value;
-validate_option(server_name_indication, disable) ->
+validate_option(server_name_indication, undefined) ->
     undefined;
+validate_option(server_name_indication, disable) ->
+    disable;
 
 validate_option(sni_hosts, []) ->
     [];
@@ -1113,24 +1117,6 @@ dtls_validate_versions([Version | Rest], Versions) when  Version == 'dtlsv1';
 dtls_validate_versions([Ver| _], Versions) ->
     throw({error, {options, {Ver, {versions, Versions}}}}).
 
-validate_inet_option(mode, Value)
-  when Value =/= list, Value =/= binary ->
-    throw({error, {options, {mode,Value}}});
-validate_inet_option(packet, Value)
-  when not (is_atom(Value) orelse is_integer(Value)) ->
-    throw({error, {options, {packet,Value}}});
-validate_inet_option(packet_size, Value)
-  when not is_integer(Value) ->
-    throw({error, {options, {packet_size,Value}}});
-validate_inet_option(header, Value)
-  when not is_integer(Value) ->
-    throw({error, {options, {header,Value}}});
-validate_inet_option(active, Value)
-  when Value =/= true, Value =/= false, Value =/= once ->
-    throw({error, {options, {active,Value}}});
-validate_inet_option(_, _) ->
-    ok.
-
 %% The option cacerts overrides cacertsfile
 ca_cert_default(_,_, [_|_]) ->
     undefined;
@@ -1145,31 +1131,11 @@ ca_cert_default(verify_peer, undefined, _) ->
 emulated_options(Protocol, Opts) ->
     case Protocol of
 	tls ->
-	    emulated_options(Opts, tls_socket:internal_inet_values(), tls_socket:default_inet_values());
+	    tls_socket:emulated_options(Opts);
 	dtls ->
-	    emulated_options(Opts, dtls_socket:internal_inet_values(), dtls_socket:default_inet_values())
+	    dtls_socket:emulated_options(Opts)
     end.
 
-emulated_options([{mode, Value} = Opt |Opts], Inet, Emulated) ->
-    validate_inet_option(mode, Value),
-    emulated_options(Opts, Inet, [Opt | proplists:delete(mode, Emulated)]);
-emulated_options([{header, Value} = Opt | Opts], Inet, Emulated) ->
-    validate_inet_option(header, Value),
-    emulated_options(Opts, Inet,  [Opt | proplists:delete(header, Emulated)]);
-emulated_options([{active, Value} = Opt |Opts], Inet, Emulated) ->
-    validate_inet_option(active, Value),
-    emulated_options(Opts, Inet, [Opt | proplists:delete(active, Emulated)]);
-emulated_options([{packet, Value} = Opt |Opts], Inet, Emulated) ->
-    validate_inet_option(packet, Value),
-    emulated_options(Opts, Inet, [Opt | proplists:delete(packet, Emulated)]);
-emulated_options([{packet_size, Value} = Opt | Opts], Inet, Emulated) ->
-    validate_inet_option(packet_size, Value),
-    emulated_options(Opts, Inet, [Opt | proplists:delete(packet_size, Emulated)]);
-emulated_options([Opt|Opts], Inet, Emulated) ->
-    emulated_options(Opts, [Opt|Inet], Emulated);
-emulated_options([], Inet,Emulated) ->
-    {Inet, Emulated}.
-
 handle_cipher_option(Value, Version)  when is_list(Value) ->
     try binary_cipher_suites(Version, Value) of
 	Suites ->
@@ -1186,9 +1152,8 @@ binary_cipher_suites(Version, []) ->
     %% not require explicit configuration
     ssl_cipher:filter_suites(ssl_cipher:suites(tls_version(Version)));
 binary_cipher_suites(Version, [Tuple|_] = Ciphers0) when is_tuple(Tuple) ->
-    Ciphers = [ssl_cipher:suite(C) || C <- Ciphers0],
+    Ciphers = [ssl_cipher:suite(tuple_to_map(C)) || C <- Ciphers0],
     binary_cipher_suites(Version, Ciphers);
-
 binary_cipher_suites(Version, [Cipher0 | _] = Ciphers0) when is_binary(Cipher0) ->
     All = ssl_cipher:all_suites(tls_version(Version)),
     case [Cipher || Cipher <- Ciphers0, lists:member(Cipher, All)] of
@@ -1205,9 +1170,20 @@ binary_cipher_suites(Version, [Head | _] = Ciphers0) when is_list(Head) ->
     binary_cipher_suites(Version, Ciphers);
 binary_cipher_suites(Version, Ciphers0)  ->
     %% Format: "RC4-SHA:RC4-MD5"
-    Ciphers = [ssl_cipher:openssl_suite(C) || C <- string:tokens(Ciphers0, ":")],
+    Ciphers = [ssl_cipher:openssl_suite(C) || C <- string:lexemes(Ciphers0, ":")],
     binary_cipher_suites(Version, Ciphers).
 
+tuple_to_map({Kex, Cipher, Mac}) ->
+    #{key_exchange => Kex,
+      cipher => Cipher,
+      mac => Mac,
+      prf => default_prf};
+tuple_to_map({Kex, Cipher, Mac, Prf}) ->
+    #{key_exchange => Kex,
+      cipher => Cipher,
+      mac => Mac,
+      prf => Prf}.
+
 handle_eccs_option(Value, Version) when is_list(Value) ->
     {_Major, Minor} = tls_version(Version),
     try tls_v1:ecc_curves(Minor, Value) of
diff --git a/lib/ssl/src/ssl_alert.erl b/lib/ssl/src/ssl_alert.erl
index db415a3666..95ab955ad0 100644
--- a/lib/ssl/src/ssl_alert.erl
+++ b/lib/ssl/src/ssl_alert.erl
@@ -57,7 +57,7 @@ decode(Bin) ->
 reason_code(#alert{description = ?CLOSE_NOTIFY}, _) ->
     closed;
 reason_code(#alert{description = Description}, _) ->
-    {tls_alert, string:to_lower(description_txt(Description))}.
+    {tls_alert, string:casefold(description_txt(Description))}.
 
 %%--------------------------------------------------------------------
 -spec own_alert_txt(#alert{}) -> string().
@@ -66,7 +66,7 @@ reason_code(#alert{description = Description}, _) ->
 %% by the erlang implementation.
 %%--------------------------------------------------------------------
 own_alert_txt(#alert{level = Level, description = Description, where = {Mod,Line}, reason = undefined, role = Role}) ->
-    "at " ++ Mod ++ ":" ++ integer_to_list(Line) ++ " generated " ++ string:to_upper(atom_to_list(Role)) ++ " ALERT: " ++
+    "at " ++ Mod ++ ":" ++ integer_to_list(Line) ++ " generated " ++ string:uppercase(atom_to_list(Role)) ++ " ALERT: " ++
         level_txt(Level) ++ description_txt(Description);
 own_alert_txt(#alert{reason = Reason} = Alert) ->
     BaseTxt = own_alert_txt(Alert#alert{reason = undefined}),
@@ -81,7 +81,7 @@ own_alert_txt(#alert{reason = Reason} = Alert) ->
 %% the peer. 
 %%--------------------------------------------------------------------
 alert_txt(#alert{level = Level, description = Description, reason = undefined, role = Role}) ->
-    "received " ++ string:to_upper(atom_to_list(Role)) ++ " ALERT: " ++
+    "received " ++ string:uppercase(atom_to_list(Role)) ++ " ALERT: " ++
         level_txt(Level) ++ description_txt(Description);
 alert_txt(#alert{reason = Reason} = Alert) ->
     BaseTxt = alert_txt(Alert#alert{reason = undefined}),
diff --git a/lib/ssl/src/ssl_certificate.erl b/lib/ssl/src/ssl_certificate.erl
index 0dd5e5c5cf..a3333d35e9 100644
--- a/lib/ssl/src/ssl_certificate.erl
+++ b/lib/ssl/src/ssl_certificate.erl
@@ -138,13 +138,8 @@ validate(_, {bad_cert, _} = Reason, _) ->
     {fail, Reason};
 validate(_, valid, UserState) ->
     {valid, UserState};
-validate(Cert, valid_peer, UserState = {client, _,_, Hostname, _, _}) when Hostname =/= undefined ->
-    case public_key:pkix_verify_hostname(Cert, [{dns_id, Hostname}]) of
-        true ->
-            {valid, UserState};
-        false ->
-            {fail, {bad_cert, hostname_check_failed}}
-    end;
+validate(Cert, valid_peer, UserState = {client, _,_, Hostname, _, _}) when Hostname =/= disable ->
+    verify_hostname(Hostname, Cert, UserState);  
 validate(_, valid_peer, UserState) ->    
    {valid, UserState}.
 
@@ -337,3 +332,32 @@ new_trusteded_chain(DerCert, [_ | Rest]) ->
     new_trusteded_chain(DerCert, Rest);
 new_trusteded_chain(_, []) ->
     unknown_ca.
+
+verify_hostname({fallback, Hostname}, Cert, UserState) when is_list(Hostname) ->
+    case public_key:pkix_verify_hostname(Cert, [{dns_id, Hostname}]) of
+        true ->
+            {valid, UserState};
+        false ->
+            case public_key:pkix_verify_hostname(Cert, [{ip, Hostname}]) of
+                true ->
+                    {valid, UserState};
+                false ->
+                    {fail, {bad_cert, hostname_check_failed}}
+            end
+    end;
+
+verify_hostname({fallback, Hostname}, Cert, UserState) ->
+    case public_key:pkix_verify_hostname(Cert, [{ip, Hostname}]) of
+        true ->
+            {valid, UserState};
+        false ->
+            {fail, {bad_cert, hostname_check_failed}}
+    end;
+
+verify_hostname(Hostname, Cert, UserState) ->
+    case public_key:pkix_verify_hostname(Cert, [{dns_id, Hostname}]) of
+        true ->
+            {valid, UserState};
+        false ->
+            {fail, {bad_cert, hostname_check_failed}}
+    end.
diff --git a/lib/ssl/src/ssl_cipher.erl b/lib/ssl/src/ssl_cipher.erl
index b6cd22dd13..b0e38fb9ad 100644
--- a/lib/ssl/src/ssl_cipher.erl
+++ b/lib/ssl/src/ssl_cipher.erl
@@ -44,20 +44,21 @@
          is_stream_ciphersuite/1]).
 
 -export_type([cipher_suite/0,
-	      erl_cipher_suite/0, openssl_cipher_suite/0,
+	      erl_cipher_suite/0, old_erl_cipher_suite/0, openssl_cipher_suite/0,
 	      hash/0, key_algo/0, sign_algo/0]).
 
--type cipher()            :: null |rc4_128 | des_cbc | '3des_ede_cbc' 
-			   | aes_128_cbc |  aes_256_cbc | aes_128_gcm | aes_256_gcm | chacha20_poly1305.
+-type cipher()            :: null |rc4_128 | des_cbc | '3des_ede_cbc' | aes_128_cbc |  aes_256_cbc | aes_128_gcm | aes_256_gcm | chacha20_poly1305.
 -type hash()              :: null | md5 | sha | sha224 | sha256 | sha384 | sha512.
 -type sign_algo()         :: rsa | dsa | ecdsa.
--type key_algo()          :: null | rsa | dhe_rsa | dhe_dss | ecdhe_ecdsa| ecdh_ecdsa | ecdh_rsa| srp_rsa| srp_dss | 
-			     psk | dhe_psk | rsa_psk | dh_anon | ecdh_anon | srp_anon.
--type erl_cipher_suite()  :: {key_algo(), cipher(), hash()} % Pre TLS 1.2 
-			     %% TLS 1.2, internally PRE TLS 1.2 will use default_prf
-			   | {key_algo(), cipher(), hash(), hash() | default_prf}. 
-
- 
+-type key_algo()          :: null | rsa | dhe_rsa | dhe_dss | ecdhe_ecdsa| ecdh_ecdsa | ecdh_rsa| srp_rsa| srp_dss | psk | dhe_psk | rsa_psk | dh_anon | ecdh_anon | srp_anon.
+-type erl_cipher_suite()  :: #{key_exchange := key_algo(),
+                               cipher := cipher(),
+                               mac    := hash(),
+                               prf    := hash() | default_prf %% Old cipher suites, version dependent
+                              }.  
+-type old_erl_cipher_suite() :: {key_algo(), cipher(), hash()} % Pre TLS 1.2 
+                                %% TLS 1.2, internally PRE TLS 1.2 will use default_prf
+                              | {key_algo(), cipher(), hash(), hash() | default_prf}. 
 -type cipher_suite()      :: binary().
 -type cipher_enum()        :: integer().
 -type openssl_cipher_suite()  :: string().
@@ -83,7 +84,8 @@ security_parameters(?TLS_NULL_WITH_NULL_NULL = CipherSuite, SecParams) ->
 %% cipher values has been updated according to <CipherSuite> 
 %%-------------------------------------------------------------------
 security_parameters(Version, CipherSuite, SecParams) ->
-    { _, Cipher, Hash, PrfHashAlg} = suite_definition(CipherSuite),
+    #{cipher := Cipher, mac := Hash, 
+      prf := PrfHashAlg} = suite_definition(CipherSuite),
     SecParams#security_parameters{
       cipher_suite = CipherSuite,
       bulk_cipher_algorithm = bulk_cipher_algorithm(Cipher),
@@ -465,353 +467,740 @@ des_suites(_)->
 %%-------------------------------------------------------------------
 %% TLS v1.1 suites
 suite_definition(?TLS_NULL_WITH_NULL_NULL) ->
-    {null, null, null, null};
+    #{key_exchange => null,
+      cipher => null, 
+      mac => null, 
+      prf => null};
 %% RFC 5746 - Not a real cipher suite used to signal empty "renegotiation_info" extension
 %% to avoid handshake failure from old servers that do not ignore
 %% hello extension data as they should.
 suite_definition(?TLS_EMPTY_RENEGOTIATION_INFO_SCSV) ->
-    {null, null, null, null};
-%% suite_definition(?TLS_RSA_WITH_NULL_MD5) ->
-%%     {rsa, null, md5, default_prf};
-%% suite_definition(?TLS_RSA_WITH_NULL_SHA) ->
-%%     {rsa, null, sha, default_prf};
+    #{key_exchange => null,
+      cipher => null, 
+      mac => null,
+      prf => null};
 suite_definition(?TLS_RSA_WITH_RC4_128_MD5) ->	
-    {rsa, rc4_128, md5, default_prf};
+    #{key_exchange => rsa,
+      cipher => rc4_128, 
+      mac => md5, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_WITH_RC4_128_SHA) ->
-    {rsa, rc4_128, sha, default_prf};
+    #{key_exchange => rsa,
+      cipher => rc4_128,
+      mac => sha,
+      prf => default_prf};
 suite_definition(?TLS_RSA_WITH_DES_CBC_SHA) ->
-    {rsa, des_cbc, sha, default_prf};
+    #{key_exchange => rsa,
+      cipher => des_cbc,
+      mac => sha,
+      prf => default_prf};
 suite_definition(?TLS_RSA_WITH_3DES_EDE_CBC_SHA) ->
-    {rsa, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => rsa,
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_DSS_WITH_DES_CBC_SHA) ->
-    {dhe_dss, des_cbc, sha, default_prf};
+    #{key_exchange => dhe_dss, 
+      cipher => des_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA) ->
-    {dhe_dss, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => dhe_dss, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_RSA_WITH_DES_CBC_SHA) ->
-    {dhe_rsa, des_cbc, sha, default_prf};
+    #{key_exchange => dhe_rsa, 
+      cipher => des_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA) ->
-    {dhe_rsa, '3des_ede_cbc', sha, default_prf};
-
+    #{key_exchange => dhe_rsa, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 %%% TSL V1.1 AES suites
 suite_definition(?TLS_RSA_WITH_AES_128_CBC_SHA) -> 
-    {rsa, aes_128_cbc, sha, default_prf};
+    #{key_exchange => rsa,
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_DSS_WITH_AES_128_CBC_SHA) ->
-    {dhe_dss, aes_128_cbc, sha, default_prf};
+    #{key_exchange => dhe_dss, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_RSA_WITH_AES_128_CBC_SHA) ->
-    {dhe_rsa, aes_128_cbc, sha, default_prf};
+    #{key_exchange => dhe_rsa, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_WITH_AES_256_CBC_SHA) -> 
-    {rsa, aes_256_cbc, sha, default_prf};
+    #{key_exchange => rsa, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_DSS_WITH_AES_256_CBC_SHA) ->
-    {dhe_dss, aes_256_cbc, sha, default_prf};
+    #{key_exchange => dhe_dss, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_RSA_WITH_AES_256_CBC_SHA) ->
-    {dhe_rsa, aes_256_cbc, sha, default_prf};
-
+    #{key_exchange => dhe_rsa, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 %% TLS v1.2 suites
-
 %% suite_definition(?TLS_RSA_WITH_NULL_SHA) ->
 %%     {rsa, null, sha, default_prf};
 suite_definition(?TLS_RSA_WITH_AES_128_CBC_SHA256) ->
-    {rsa, aes_128_cbc, sha256, default_prf};
+    #{key_exchange => rsa, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_WITH_AES_256_CBC_SHA256) ->
-    {rsa, aes_256_cbc, sha256, default_prf};
+    #{key_exchange => rsa, 
+      cipher => aes_256_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_DSS_WITH_AES_128_CBC_SHA256) ->
-    {dhe_dss, aes_128_cbc, sha256, default_prf};
+    #{key_exchange => dhe_dss, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_RSA_WITH_AES_128_CBC_SHA256) ->
-    {dhe_rsa, aes_128_cbc, sha256, default_prf};
+    #{key_exchange => dhe_rsa, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_DSS_WITH_AES_256_CBC_SHA256) ->
-    {dhe_dss, aes_256_cbc, sha256, default_prf};
+    #{key_exchange => dhe_dss, 
+      cipher => aes_256_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_RSA_WITH_AES_256_CBC_SHA256) ->
-    {dhe_rsa, aes_256_cbc, sha256, default_prf};
-
+    #{key_exchange => dhe_rsa, 
+      cipher => aes_256_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 %% not defined YET:
 %%   TLS_DH_DSS_WITH_AES_128_CBC_SHA256      DH_DSS       AES_128_CBC  SHA256
 %%   TLS_DH_RSA_WITH_AES_128_CBC_SHA256      DH_RSA       AES_128_CBC  SHA256
 %%   TLS_DH_DSS_WITH_AES_256_CBC_SHA256      DH_DSS       AES_256_CBC  SHA256
 %%   TLS_DH_RSA_WITH_AES_256_CBC_SHA256      DH_RSA       AES_256_CBC  SHA256
-
 %%% DH-ANON deprecated by TLS spec and not available
 %%% by default, but good for testing purposes.
 suite_definition(?TLS_DH_anon_WITH_RC4_128_MD5) ->
-    {dh_anon, rc4_128, md5, default_prf};
+    #{key_exchange => dh_anon, 
+      cipher => rc4_128, 
+      mac => md5, 
+      prf => default_prf};
 suite_definition(?TLS_DH_anon_WITH_DES_CBC_SHA) ->
-    {dh_anon, des_cbc, sha, default_prf};
+    #{key_exchange => dh_anon, 
+      cipher => des_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DH_anon_WITH_3DES_EDE_CBC_SHA) ->
-    {dh_anon, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => dh_anon, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DH_anon_WITH_AES_128_CBC_SHA) ->
-    {dh_anon, aes_128_cbc, sha, default_prf};
+    #{key_exchange => dh_anon, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DH_anon_WITH_AES_256_CBC_SHA) ->
-    {dh_anon, aes_256_cbc, sha, default_prf};
+    #{key_exchange => dh_anon, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DH_anon_WITH_AES_128_CBC_SHA256) ->
-    {dh_anon, aes_128_cbc, sha256, default_prf};
+    #{key_exchange => dh_anon, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_DH_anon_WITH_AES_256_CBC_SHA256) ->
-    {dh_anon, aes_256_cbc, sha256, default_prf};
-
+    #{key_exchange => dh_anon, 
+      cipher => aes_256_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 %%% PSK Cipher Suites RFC 4279
-
 suite_definition(?TLS_PSK_WITH_RC4_128_SHA) ->
-    {psk, rc4_128, sha, default_prf};
+    #{key_exchange => psk, 
+      cipher => rc4_128, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_PSK_WITH_3DES_EDE_CBC_SHA) ->
-    {psk, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => psk, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_PSK_WITH_AES_128_CBC_SHA) ->
-    {psk, aes_128_cbc, sha, default_prf};
+    #{key_exchange => psk, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_PSK_WITH_AES_256_CBC_SHA) ->
-    {psk, aes_256_cbc, sha, default_prf};
+    #{key_exchange => psk, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_PSK_WITH_RC4_128_SHA) ->
-    {dhe_psk, rc4_128, sha, default_prf};
+    #{key_exchange => dhe_psk, 
+      cipher => rc4_128, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA) ->
-    {dhe_psk, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => dhe_psk, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_PSK_WITH_AES_128_CBC_SHA) ->
-    {dhe_psk, aes_128_cbc, sha, default_prf};
+    #{key_exchange => dhe_psk, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_PSK_WITH_AES_256_CBC_SHA) ->
-    {dhe_psk, aes_256_cbc, sha, default_prf};
+    #{key_exchange => dhe_psk, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_PSK_WITH_RC4_128_SHA) ->
-    {rsa_psk, rc4_128, sha, default_prf};
+    #{key_exchange => rsa_psk, 
+      cipher => rc4_128, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA) ->
-    {rsa_psk, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => rsa_psk, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_PSK_WITH_AES_128_CBC_SHA) ->
-    {rsa_psk, aes_128_cbc, sha, default_prf};
+    #{key_exchange => rsa_psk, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_PSK_WITH_AES_256_CBC_SHA) ->
-    {rsa_psk, aes_256_cbc, sha, default_prf};
-
+    #{key_exchange => rsa_psk, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 %%% PSK NULL Cipher Suites RFC 4785
-
 suite_definition(?TLS_PSK_WITH_NULL_SHA) ->
-    {psk, null, sha, default_prf};
+    #{key_exchange => psk, 
+      cipher => null, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_PSK_WITH_NULL_SHA) ->
-    {dhe_psk, null, sha, default_prf};
+    #{key_exchange => dhe_psk,
+      cipher => null, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_PSK_WITH_NULL_SHA) ->
-    {rsa_psk, null, sha, default_prf};
-
+    #{key_exchange => rsa_psk,
+      cipher => null, 
+      mac => sha, 
+      prf => default_prf};  
 %%% TLS 1.2 PSK Cipher Suites RFC 5487
-
 suite_definition(?TLS_PSK_WITH_AES_128_GCM_SHA256) ->
-    {psk, aes_128_gcm, null, sha256};
+    #{key_exchange => psk, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_PSK_WITH_AES_256_GCM_SHA384) ->
-    {psk, aes_256_gcm, null, sha384};
+    #{key_exchange => psk, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 suite_definition(?TLS_DHE_PSK_WITH_AES_128_GCM_SHA256) ->
-    {dhe_psk, aes_128_gcm, null, sha256};
+    #{key_exchange => dhe_psk, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_DHE_PSK_WITH_AES_256_GCM_SHA384) ->
-    {dhe_psk, aes_256_gcm, null, sha384};
+    #{key_exchange => dhe_psk, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 suite_definition(?TLS_RSA_PSK_WITH_AES_128_GCM_SHA256) ->
-    {rsa_psk, aes_128_gcm, null, sha256};
+    #{key_exchange => rsa_psk, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_RSA_PSK_WITH_AES_256_GCM_SHA384) ->
-    {rsa_psk, aes_256_gcm, null, sha384};
-
+    #{key_exchange => rsa_psk, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 suite_definition(?TLS_PSK_WITH_AES_128_CBC_SHA256) ->
-    {psk, aes_128_cbc, sha256, default_prf};
+    #{key_exchange => psk, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_PSK_WITH_AES_256_CBC_SHA384) ->
-    {psk, aes_256_cbc, sha384, default_prf};
+    #{key_exchange => psk, 
+      cipher => aes_256_cbc, 
+      mac => sha384, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_PSK_WITH_AES_128_CBC_SHA256) ->
-    {dhe_psk, aes_128_cbc, sha256, default_prf};
+    #{key_exchange => dhe_psk, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_PSK_WITH_AES_256_CBC_SHA384) ->
-    {dhe_psk, aes_256_cbc, sha384, default_prf};
+    #{key_exchange => dhe_psk, 
+      cipher => aes_256_cbc, 
+      mac => sha384, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_PSK_WITH_AES_128_CBC_SHA256) ->
-    {rsa_psk, aes_128_cbc, sha256, default_prf};
+    #{key_exchange => rsa_psk, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_PSK_WITH_AES_256_CBC_SHA384) ->
-    {rsa_psk, aes_256_cbc, sha384, default_prf};
-
+    #{key_exchange => rsa_psk, 
+      cipher => aes_256_cbc, 
+      mac => sha384, 
+      prf => default_prf};
 suite_definition(?TLS_PSK_WITH_NULL_SHA256) ->
-    {psk, null, sha256, default_prf};
+    #{key_exchange => psk, 
+      cipher => null, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_PSK_WITH_NULL_SHA384) ->
-    {psk, null, sha384, default_prf};
+    #{key_exchange => psk, 
+      cipher => null, 
+      mac => sha384, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_PSK_WITH_NULL_SHA256) ->
-    {dhe_psk, null, sha256, default_prf};
+    #{key_exchange => dhe_psk, 
+      cipher => null, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_DHE_PSK_WITH_NULL_SHA384) ->
-    {dhe_psk, null, sha384, default_prf};
+    #{key_exchange => dhe_psk, 
+      cipher => null, 
+      mac => sha384, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_PSK_WITH_NULL_SHA256) ->
-    {rsa_psk, null, sha256, default_prf};
+    #{key_exchange => rsa_psk, 
+      cipher => null, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_RSA_PSK_WITH_NULL_SHA384) ->
-    {rsa_psk, null, sha384, default_prf};
-
+    #{key_exchange => rsa_psk, 
+      cipher => null, 
+      mac => sha384, 
+      prf => default_prf};
 %%% ECDHE PSK Cipher Suites RFC 5489
-
 suite_definition(?TLS_ECDHE_PSK_WITH_RC4_128_SHA) ->
-    {ecdhe_psk, rc4_128, sha, default_prf};
+    #{key_exchange => ecdhe_psk, 
+      cipher => rc4_128, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA) ->
-    {ecdhe_psk, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => ecdhe_psk, 
+      cipher => '3des_ede_cbc',
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA) ->
-    {ecdhe_psk, aes_128_cbc, sha, default_prf};
+    #{key_exchange => ecdhe_psk, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA) ->
-    {ecdhe_psk, aes_256_cbc, sha, default_prf};
+    #{key_exchange => ecdhe_psk, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256) ->
-    {ecdhe_psk, aes_128_cbc, sha256, default_prf};
+    #{key_exchange => ecdhe_psk, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384) ->
-    {ecdhe_psk, aes_256_cbc, sha384, default_prf};
+    #{key_exchange => ecdhe_psk, 
+      cipher => aes_256_cbc, 
+      mac => sha384, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_PSK_WITH_NULL_SHA256) ->
-    {ecdhe_psk, null, sha256, default_prf};
+    #{key_exchange => ecdhe_psk, 
+      cipher => null, 
+      mac => sha256, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_PSK_WITH_NULL_SHA384) ->
-    {ecdhe_psk, null, sha384, default_prf};
-
+    #{key_exchange => ecdhe_psk, 
+      cipher => null, mac => sha384, 
+      prf => default_prf};
 %%% ECDHE_PSK with AES-GCM and AES-CCM Cipher Suites, draft-ietf-tls-ecdhe-psk-aead-05
-
 suite_definition(?TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256) ->
-    {ecdhe_psk, aes_128_gcm, null, sha256};
+    #{key_exchange => ecdhe_psk, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_ECDHE_PSK_WITH_AES_256_GCM_SHA384) ->
-    {ecdhe_psk, aes_256_gcm, null, sha384};
+    #{key_exchange => ecdhe_psk, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 %% suite_definition(?TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256) ->
-%%    {ecdhe_psk, aes_128_ccm, null, sha256};
+%%     #{key_exchange => ecdhe_psk, 
+%%       cipher => aes_128_ccm, 
+%%       mac => null, 
+%%       prf =>sha256};
 %% suite_definition(?TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256) ->
-%%    {ecdhe_psk, aes_256_ccm, null, sha256};
-
+%%     #{key_exchange => ecdhe_psk, 
+%%       cipher => aes_256_ccm, 
+%%       mac => null, 
+%%       prf => sha256};
 %%% SRP Cipher Suites RFC 5054
-
 suite_definition(?TLS_SRP_SHA_WITH_3DES_EDE_CBC_SHA) ->
-    {srp_anon, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => srp_anon, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA) ->
-    {srp_rsa, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => srp_rsa, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA) ->
-    {srp_dss, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => srp_dss, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_SRP_SHA_WITH_AES_128_CBC_SHA) ->
-    {srp_anon, aes_128_cbc, sha, default_prf};
+    #{key_exchange => srp_anon, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_SRP_SHA_RSA_WITH_AES_128_CBC_SHA) ->
-    {srp_rsa, aes_128_cbc, sha, default_prf};
+    #{key_exchange => srp_rsa, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_SRP_SHA_DSS_WITH_AES_128_CBC_SHA) ->
-    {srp_dss, aes_128_cbc, sha, default_prf};
+    #{key_exchange => srp_dss, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_SRP_SHA_WITH_AES_256_CBC_SHA) ->
-    {srp_anon, aes_256_cbc, sha, default_prf};
+    #{key_exchange => srp_anon, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_SRP_SHA_RSA_WITH_AES_256_CBC_SHA) ->
-    {srp_rsa, aes_256_cbc, sha, default_prf};
+    #{key_exchange => srp_rsa, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_SRP_SHA_DSS_WITH_AES_256_CBC_SHA) ->
-    {srp_dss, aes_256_cbc, sha, default_prf};
-
+    #{key_exchange => srp_dss, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 %% RFC 4492 EC TLS suites
 suite_definition(?TLS_ECDH_ECDSA_WITH_NULL_SHA) ->
-    {ecdh_ecdsa, null, sha, default_prf};
+    #{key_exchange => ecdh_ecdsa, 
+      cipher => null, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_ECDSA_WITH_RC4_128_SHA) ->
-    {ecdh_ecdsa, rc4_128, sha, default_prf};
+    #{key_exchange => ecdh_ecdsa, 
+      cipher => rc4_128, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA) ->
-    {ecdh_ecdsa, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => ecdh_ecdsa, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA) ->
-    {ecdh_ecdsa, aes_128_cbc, sha, default_prf};
+    #{key_exchange => ecdh_ecdsa, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA) ->
-    {ecdh_ecdsa, aes_256_cbc, sha, default_prf};
-
+    #{key_exchange => ecdh_ecdsa, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_ECDSA_WITH_NULL_SHA) ->
-    {ecdhe_ecdsa, null, sha, default_prf};
+    #{key_exchange => ecdhe_ecdsa, 
+      cipher => null, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_ECDSA_WITH_RC4_128_SHA) ->
-    {ecdhe_ecdsa, rc4_128, sha, default_prf};
+    #{key_exchange => ecdhe_ecdsa, 
+      cipher => rc4_128, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA) ->
-    {ecdhe_ecdsa, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => ecdhe_ecdsa, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA) ->
-    {ecdhe_ecdsa, aes_128_cbc, sha, default_prf};
+    #{key_exchange => ecdhe_ecdsa, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA) ->
-    {ecdhe_ecdsa, aes_256_cbc, sha, default_prf};
-
+    #{key_exchange => ecdhe_ecdsa, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_RSA_WITH_NULL_SHA) ->
-    {ecdh_rsa, null, sha, default_prf};
+    #{key_exchange => ecdh_rsa, 
+      cipher => null, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_RSA_WITH_RC4_128_SHA) ->
-    {ecdh_rsa, rc4_128, sha, default_prf};
+    #{key_exchange => ecdh_rsa, 
+      cipher => rc4_128, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA) ->
-    {ecdh_rsa, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => ecdh_rsa, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_RSA_WITH_AES_128_CBC_SHA) ->
-    {ecdh_rsa, aes_128_cbc, sha, default_prf};
+    #{key_exchange => ecdh_rsa, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_RSA_WITH_AES_256_CBC_SHA) ->
-    {ecdh_rsa, aes_256_cbc, sha, default_prf};
-
+    #{key_exchange => ecdh_rsa, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_RSA_WITH_NULL_SHA) ->
-    {ecdhe_rsa, null, sha, default_prf};
+    #{key_exchange => ecdhe_rsa, 
+      cipher => null, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_RSA_WITH_RC4_128_SHA) ->
-    {ecdhe_rsa, rc4_128, sha, default_prf};
+    #{key_exchange => ecdhe_rsa, 
+      cipher => rc4_128, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA) ->
-    {ecdhe_rsa, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => ecdhe_rsa, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) ->
-    {ecdhe_rsa, aes_128_cbc, sha, default_prf};
+    #{key_exchange => ecdhe_rsa, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) ->
-    {ecdhe_rsa, aes_256_cbc, sha, default_prf};
-
+    #{key_exchange => ecdhe_rsa, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_anon_WITH_NULL_SHA) ->
-    {ecdh_anon, null, sha, default_prf};
+    #{key_exchange => ecdh_anon, 
+      cipher => null, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_anon_WITH_RC4_128_SHA) ->
-    {ecdh_anon, rc4_128, sha, default_prf};
+    #{key_exchange => ecdh_anon, 
+      cipher => rc4_128, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA) ->
-    {ecdh_anon, '3des_ede_cbc', sha, default_prf};
+    #{key_exchange => ecdh_anon, 
+      cipher => '3des_ede_cbc', 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_anon_WITH_AES_128_CBC_SHA) ->
-    {ecdh_anon, aes_128_cbc, sha, default_prf};
+    #{key_exchange => ecdh_anon, 
+      cipher => aes_128_cbc, 
+      mac => sha, 
+      prf => default_prf};
 suite_definition(?TLS_ECDH_anon_WITH_AES_256_CBC_SHA) ->
-    {ecdh_anon, aes_256_cbc, sha, default_prf};
-
+    #{key_exchange => ecdh_anon, 
+      cipher => aes_256_cbc, 
+      mac => sha, 
+      prf => default_prf};
 %% RFC 5289 EC TLS suites
 suite_definition(?TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256) ->
-    {ecdhe_ecdsa, aes_128_cbc, sha256, sha256};
+    #{key_exchange => ecdhe_ecdsa, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => sha256};
 suite_definition(?TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384) ->
-    {ecdhe_ecdsa, aes_256_cbc, sha384, sha384};
+    #{key_exchange => ecdhe_ecdsa, 
+      cipher => aes_256_cbc, 
+      mac => sha384, 
+      prf => sha384};
 suite_definition(?TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256) ->
-    {ecdh_ecdsa, aes_128_cbc, sha256, sha256};
+    #{key_exchange => ecdh_ecdsa, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => sha256};
 suite_definition(?TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384) ->
-    {ecdh_ecdsa, aes_256_cbc, sha384, sha384};
+    #{key_exchange => ecdh_ecdsa, 
+      cipher => aes_256_cbc, 
+      mac => sha384, 
+      prf => sha384};
 suite_definition(?TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) ->
-    {ecdhe_rsa, aes_128_cbc, sha256, sha256};
+    #{key_exchange => ecdhe_rsa, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => sha256};
 suite_definition(?TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) ->
-    {ecdhe_rsa, aes_256_cbc, sha384, sha384};
+    #{key_exchange => ecdhe_rsa, 
+      cipher => aes_256_cbc, 
+      mac => sha384, 
+      prf => sha384};
 suite_definition(?TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256) ->
-    {ecdh_rsa, aes_128_cbc, sha256, sha256};
+    #{key_exchange => ecdh_rsa, 
+      cipher => aes_128_cbc, 
+      mac => sha256, 
+      prf => sha256};
 suite_definition(?TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384) ->
-    {ecdh_rsa, aes_256_cbc, sha384, sha384};
-
+    #{key_exchange => ecdh_rsa, 
+      cipher => aes_256_cbc, 
+      mac => sha384, 
+      prf => sha384};
 %% RFC 5288 AES-GCM Cipher Suites
 suite_definition(?TLS_RSA_WITH_AES_128_GCM_SHA256) ->
-    {rsa, aes_128_gcm, null, sha256};
+    #{key_exchange => rsa, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_RSA_WITH_AES_256_GCM_SHA384) ->
-    {rsa, aes_256_gcm, null, sha384};
+    #{key_exchange => rsa, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 suite_definition(?TLS_DHE_RSA_WITH_AES_128_GCM_SHA256) ->
-    {dhe_rsa, aes_128_gcm, null, sha256};
+    #{key_exchange => dhe_rsa, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_DHE_RSA_WITH_AES_256_GCM_SHA384) ->
-    {dhe_rsa, aes_256_gcm, null, sha384};
+    #{key_exchange => dhe_rsa, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 suite_definition(?TLS_DH_RSA_WITH_AES_128_GCM_SHA256) ->
-    {dh_rsa, aes_128_gcm, null, sha256};
+    #{key_exchange => dh_rsa, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_DH_RSA_WITH_AES_256_GCM_SHA384) ->
-    {dh_rsa, aes_256_gcm, null, sha384};
+    #{key_exchange => dh_rsa, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 suite_definition(?TLS_DHE_DSS_WITH_AES_128_GCM_SHA256) ->
-    {dhe_dss, aes_128_gcm, null, sha256};
+    #{key_exchange => dhe_dss, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_DHE_DSS_WITH_AES_256_GCM_SHA384) ->
-    {dhe_dss, aes_256_gcm, null, sha384};
+    #{key_exchange => dhe_dss, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 suite_definition(?TLS_DH_DSS_WITH_AES_128_GCM_SHA256) ->
-    {dh_dss, aes_128_gcm, null, sha256};
+    #{key_exchange => dh_dss, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_DH_DSS_WITH_AES_256_GCM_SHA384) ->
-    {dh_dss, aes_256_gcm, null, sha384};
+    #{key_exchange => dh_dss, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 suite_definition(?TLS_DH_anon_WITH_AES_128_GCM_SHA256) ->
-    {dh_anon, aes_128_gcm, null, sha256};
+    #{key_exchange => dh_anon, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_DH_anon_WITH_AES_256_GCM_SHA384) ->
-    {dh_anon, aes_256_gcm, null, sha384};
-
+    #{key_exchange => dh_anon, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 %% RFC 5289 ECC AES-GCM Cipher Suites
 suite_definition(?TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256) ->
-    {ecdhe_ecdsa, aes_128_gcm, null, sha256};
+    #{key_exchange => ecdhe_ecdsa, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384) ->
-    {ecdhe_ecdsa, aes_256_gcm, null, sha384};
+    #{key_exchange => ecdhe_ecdsa, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 suite_definition(?TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256) ->
-    {ecdh_ecdsa, aes_128_gcm, null, sha256};
+    #{key_exchange => ecdh_ecdsa, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384) ->
-    {ecdh_ecdsa, aes_256_gcm, null, sha384};
+    #{key_exchange => ecdh_ecdsa, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 suite_definition(?TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) ->
-    {ecdhe_rsa, aes_128_gcm, null, sha256};
+    #{key_exchange => ecdhe_rsa, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) ->
-    {ecdhe_rsa, aes_256_gcm, null, sha384};
+    #{key_exchange => ecdhe_rsa, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 suite_definition(?TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256) ->
-    {ecdh_rsa, aes_128_gcm, null, sha256};
+    #{key_exchange => ecdh_rsa, 
+      cipher => aes_128_gcm, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384) ->
-    {ecdh_rsa, aes_256_gcm, null, sha384};
-
+    #{key_exchange => ecdh_rsa, 
+      cipher => aes_256_gcm, 
+      mac => null, 
+      prf => sha384};
 %% draft-agl-tls-chacha20poly1305-04 Chacha20/Poly1305 Suites
 suite_definition(?TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256) ->
-    {ecdhe_rsa, chacha20_poly1305, null, sha256};
+    #{key_exchange => ecdhe_rsa, 
+      cipher => chacha20_poly1305, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256) ->
-    {ecdhe_ecdsa, chacha20_poly1305, null, sha256};
+    #{key_exchange => ecdhe_ecdsa, 
+      cipher => chacha20_poly1305, 
+      mac => null, 
+      prf => sha256};
 suite_definition(?TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256) ->
-    {dhe_rsa, chacha20_poly1305, null, sha256}.
+    #{key_exchange => dhe_rsa, 
+      cipher => chacha20_poly1305, 
+      mac => null, 
+      prf => sha256}.
 
 %%--------------------------------------------------------------------
--spec erl_suite_definition(cipher_suite()) -> erl_cipher_suite().
+-spec erl_suite_definition(cipher_suite() | erl_cipher_suite()) -> old_erl_cipher_suite().
 %%
 %% Description: Return erlang cipher suite definition. Filters last value
 %% for now (compatibility reasons).
 %%--------------------------------------------------------------------
-erl_suite_definition(S) ->
-    case suite_definition(S) of
-	{KeyExchange, Cipher, Hash, default_prf} ->
+erl_suite_definition(Bin) when is_binary(Bin) ->
+    erl_suite_definition(suite_definition(Bin));    
+erl_suite_definition(#{key_exchange := KeyExchange, cipher := Cipher,
+                       mac := Hash, prf := Prf}) ->
+    case Prf of
+        default_prf ->
 	    {KeyExchange, Cipher, Hash};
-	Suite ->
-	    Suite
+	_ ->
+            {KeyExchange, Cipher, Hash, Prf}
     end.
 
 %%--------------------------------------------------------------------
@@ -819,327 +1208,607 @@ erl_suite_definition(S) ->
 %%
 %% Description: Return TLS cipher suite definition.
 %%--------------------------------------------------------------------
-
 %% TLS v1.1 suites
-%%suite({rsa, null, md5}) ->
-%%    ?TLS_RSA_WITH_NULL_MD5;
-%%suite({rsa, null, sha}) ->
-%%    ?TLS_RSA_WITH_NULL_SHA;
-suite({rsa, rc4_128, md5}) ->
+suite(#{key_exchange := rsa, 
+        cipher := rc4_128, 
+        mac := md5}) ->
     ?TLS_RSA_WITH_RC4_128_MD5;
-suite({rsa, rc4_128, sha}) ->
+suite(#{key_exchange := rsa, 
+        cipher := rc4_128, 
+        mac := sha}) ->
     ?TLS_RSA_WITH_RC4_128_SHA;
-suite({rsa, des_cbc, sha}) ->
+suite(#{key_exchange := rsa, 
+        cipher := des_cbc, 
+        mac := sha}) ->
     ?TLS_RSA_WITH_DES_CBC_SHA; 
-suite({rsa, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := rsa, 
+        cipher :='3des_ede_cbc', 
+        mac := sha}) ->
     ?TLS_RSA_WITH_3DES_EDE_CBC_SHA; 
-suite({dhe_dss, des_cbc, sha}) ->
+suite(#{key_exchange := dhe_dss,  
+        cipher:= des_cbc, 
+        mac := sha}) ->
     ?TLS_DHE_DSS_WITH_DES_CBC_SHA;
-suite({dhe_dss, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := dhe_dss, 
+        cipher:= '3des_ede_cbc', 
+        mac := sha}) ->
     ?TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA;
-suite({dhe_rsa, des_cbc, sha}) ->
+suite(#{key_exchange := dhe_rsa, 
+        cipher:= des_cbc,
+        mac := sha}) ->
     ?TLS_DHE_RSA_WITH_DES_CBC_SHA;
-suite({dhe_rsa, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := dhe_rsa, 
+        cipher:= '3des_ede_cbc', 
+        mac := sha}) ->
     ?TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA; 
-suite({dh_anon, rc4_128, md5}) ->
+suite(#{key_exchange := dh_anon, 
+        cipher:= rc4_128,
+        mac := md5}) ->
     ?TLS_DH_anon_WITH_RC4_128_MD5;
-suite({dh_anon, des_cbc, sha}) ->
+suite(#{key_exchange := dh_anon, 
+        cipher:= des_cbc,  
+        mac := sha}) ->
     ?TLS_DH_anon_WITH_DES_CBC_SHA;
-suite({dh_anon, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := dh_anon, 
+        cipher:= '3des_ede_cbc',
+        mac := sha}) ->
     ?TLS_DH_anon_WITH_3DES_EDE_CBC_SHA;
-
 %%% TSL V1.1 AES suites
-suite({rsa, aes_128_cbc, sha}) ->
+suite(#{key_exchange := rsa, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_RSA_WITH_AES_128_CBC_SHA; 
-suite({dhe_dss, aes_128_cbc, sha}) ->
+suite(#{key_exchange := dhe_dss, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_DHE_DSS_WITH_AES_128_CBC_SHA; 
-suite({dhe_rsa, aes_128_cbc, sha}) ->
+suite(#{key_exchange := dhe_rsa, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_DHE_RSA_WITH_AES_128_CBC_SHA;
-suite({dh_anon, aes_128_cbc, sha}) ->
+suite(#{key_exchange := dh_anon, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_DH_anon_WITH_AES_128_CBC_SHA;
-suite({rsa, aes_256_cbc, sha}) ->
+suite(#{key_exchange := rsa, 
+        cipher := aes_256_cbc,  
+        mac := sha}) ->
     ?TLS_RSA_WITH_AES_256_CBC_SHA;
-suite({dhe_dss, aes_256_cbc, sha}) ->
+suite(#{key_exchange := dhe_dss, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_DHE_DSS_WITH_AES_256_CBC_SHA;
-suite({dhe_rsa, aes_256_cbc, sha}) ->
+suite(#{key_exchange := dhe_rsa, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_DHE_RSA_WITH_AES_256_CBC_SHA;
-suite({dh_anon, aes_256_cbc, sha}) ->
+suite(#{key_exchange := dh_anon, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_DH_anon_WITH_AES_256_CBC_SHA;
-
 %% TLS v1.2 suites
-
-%% suite_definition(?TLS_RSA_WITH_NULL_SHA) ->
-%%     {rsa, null, sha, sha256};
-suite({rsa, aes_128_cbc, sha256}) ->
+suite(#{key_exchange := rsa, 
+        cipher := aes_128_cbc, 
+        mac := sha256}) ->
     ?TLS_RSA_WITH_AES_128_CBC_SHA256;
-suite({rsa, aes_256_cbc, sha256}) ->
+suite(#{key_exchange := rsa, 
+        cipher := aes_256_cbc, 
+        mac := sha256}) ->
     ?TLS_RSA_WITH_AES_256_CBC_SHA256;
-suite({dhe_dss, aes_128_cbc, sha256}) ->
+suite(#{key_exchange := dhe_dss, 
+        cipher := aes_128_cbc, 
+        mac := sha256}) ->
     ?TLS_DHE_DSS_WITH_AES_128_CBC_SHA256;
-suite({dhe_rsa, aes_128_cbc, sha256}) ->
+suite(#{key_exchange := dhe_rsa, 
+        cipher := aes_128_cbc, 
+        mac := sha256}) ->
     ?TLS_DHE_RSA_WITH_AES_128_CBC_SHA256;
-suite({dhe_dss, aes_256_cbc, sha256}) ->
+suite(#{key_exchange := dhe_dss, 
+        cipher := aes_256_cbc, 
+        mac := sha256}) ->
     ?TLS_DHE_DSS_WITH_AES_256_CBC_SHA256;
-suite({dhe_rsa, aes_256_cbc, sha256}) ->
+suite(#{key_exchange := dhe_rsa, 
+        cipher := aes_256_cbc, 
+        mac := sha256}) ->
     ?TLS_DHE_RSA_WITH_AES_256_CBC_SHA256;
-suite({dh_anon, aes_128_cbc, sha256}) ->
+suite(#{key_exchange := dh_anon, 
+        cipher := aes_128_cbc, 
+        mac := sha256}) ->
     ?TLS_DH_anon_WITH_AES_128_CBC_SHA256;
-suite({dh_anon, aes_256_cbc, sha256}) ->
+suite(#{key_exchange := dh_anon, 
+        cipher := aes_256_cbc, 
+        mac := sha256}) ->
     ?TLS_DH_anon_WITH_AES_256_CBC_SHA256;
-
 %%% PSK Cipher Suites RFC 4279
-
-suite({psk, rc4_128,sha}) ->
+suite(#{key_exchange := psk, 
+        cipher := rc4_128,
+        mac := sha}) ->
     ?TLS_PSK_WITH_RC4_128_SHA;
-suite({psk, '3des_ede_cbc',sha}) ->
+suite(#{key_exchange := psk, 
+        cipher := '3des_ede_cbc', 
+        mac := sha}) ->
     ?TLS_PSK_WITH_3DES_EDE_CBC_SHA;
-suite({psk, aes_128_cbc,sha}) ->
+suite(#{key_exchange := psk, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_PSK_WITH_AES_128_CBC_SHA;
-suite({psk, aes_256_cbc,sha}) ->
+suite(#{key_exchange := psk, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_PSK_WITH_AES_256_CBC_SHA;
-suite({dhe_psk, rc4_128,sha}) ->
+suite(#{key_exchange := dhe_psk, 
+        cipher := rc4_128, 
+        mac := sha})  ->
     ?TLS_DHE_PSK_WITH_RC4_128_SHA;
-suite({dhe_psk, '3des_ede_cbc',sha}) ->
+suite(#{key_exchange := dhe_psk, 
+        cipher := '3des_ede_cbc', 
+        mac := sha}) ->
     ?TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA;
-suite({dhe_psk, aes_128_cbc,sha}) ->
+suite(#{key_exchange := dhe_psk, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_DHE_PSK_WITH_AES_128_CBC_SHA;
-suite({dhe_psk, aes_256_cbc,sha}) ->
+suite(#{key_exchange := dhe_psk, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_DHE_PSK_WITH_AES_256_CBC_SHA;
-suite({rsa_psk, rc4_128,sha}) ->
+suite(#{key_exchange := rsa_psk, 
+        cipher := rc4_128, 
+        mac := sha}) ->
     ?TLS_RSA_PSK_WITH_RC4_128_SHA;
-suite({rsa_psk, '3des_ede_cbc',sha}) ->
+suite(#{key_exchange := rsa_psk, 
+        cipher := '3des_ede_cbc', 
+        mac := sha}) ->
     ?TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA;
-suite({rsa_psk, aes_128_cbc,sha}) ->
+suite(#{key_exchange := rsa_psk, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_RSA_PSK_WITH_AES_128_CBC_SHA;
-suite({rsa_psk, aes_256_cbc,sha}) ->
+suite(#{key_exchange := rsa_psk, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_RSA_PSK_WITH_AES_256_CBC_SHA;
-
 %%% PSK NULL Cipher Suites RFC 4785
-
-suite({psk, null, sha}) ->
+suite(#{key_exchange := psk, 
+        cipher := null, 
+        mac := sha}) ->
     ?TLS_PSK_WITH_NULL_SHA;
-suite({dhe_psk, null, sha}) ->
+suite(#{key_exchange := dhe_psk, 
+        cipher := null, 
+        mac := sha}) ->
     ?TLS_DHE_PSK_WITH_NULL_SHA;
-suite({rsa_psk, null, sha}) ->
+suite(#{key_exchange := rsa_psk, 
+       cipher := null, 
+       mac := sha}) ->
     ?TLS_RSA_PSK_WITH_NULL_SHA;
-
 %%% TLS 1.2 PSK Cipher Suites RFC 5487
-
-suite({psk, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := psk, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_PSK_WITH_AES_128_GCM_SHA256;
-suite({psk, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := psk, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_PSK_WITH_AES_256_GCM_SHA384;
-suite({dhe_psk, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := dhe_psk, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_DHE_PSK_WITH_AES_128_GCM_SHA256;
-suite({dhe_psk, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := dhe_psk, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_DHE_PSK_WITH_AES_256_GCM_SHA384;
-suite({rsa_psk, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := rsa_psk, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_RSA_PSK_WITH_AES_128_GCM_SHA256;
-suite({rsa_psk, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := rsa_psk, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_RSA_PSK_WITH_AES_256_GCM_SHA384;
-
-suite({psk, aes_128_cbc, sha256}) ->
+suite(#{key_exchange := psk, 
+        cipher := aes_128_cbc, 
+        mac := sha256}) ->
     ?TLS_PSK_WITH_AES_128_CBC_SHA256;
-suite({psk, aes_256_cbc, sha384}) ->
+suite(#{key_exchange := psk, 
+        cipher := aes_256_cbc, 
+        mac := sha384}) ->
     ?TLS_PSK_WITH_AES_256_CBC_SHA384;
-suite({dhe_psk, aes_128_cbc, sha256}) ->
+suite(#{key_exchange := dhe_psk, 
+        cipher := aes_128_cbc, 
+        mac := sha256}) ->
     ?TLS_DHE_PSK_WITH_AES_128_CBC_SHA256;
-suite({dhe_psk, aes_256_cbc, sha384}) ->
+suite(#{key_exchange := dhe_psk, 
+        cipher := aes_256_cbc, 
+        mac := sha384}) ->
     ?TLS_DHE_PSK_WITH_AES_256_CBC_SHA384;
-suite({rsa_psk, aes_128_cbc, sha256}) ->
+suite(#{key_exchange := rsa_psk, 
+        cipher := aes_128_cbc, 
+        mac := sha256}) ->
     ?TLS_RSA_PSK_WITH_AES_128_CBC_SHA256;
-suite({rsa_psk, aes_256_cbc, sha384}) ->
+suite(#{key_exchange := rsa_psk, 
+        cipher := aes_256_cbc, 
+        mac := sha384}) ->
     ?TLS_RSA_PSK_WITH_AES_256_CBC_SHA384;
-
-suite({psk, null, sha256}) ->
+suite(#{key_exchange := psk, 
+        cipher := null, 
+        mac := sha256}) ->
     ?TLS_PSK_WITH_NULL_SHA256;
-suite({psk, null, sha384}) ->
+suite(#{key_exchange := psk, 
+        cipher := null,
+        mac := sha384}) ->
     ?TLS_PSK_WITH_NULL_SHA384;
-suite({dhe_psk, null, sha256}) ->
+suite(#{key_exchange := dhe_psk, 
+        cipher := null, 
+        mac := sha256}) ->
     ?TLS_DHE_PSK_WITH_NULL_SHA256;
-suite({dhe_psk, null, sha384}) ->
+suite(#{key_exchange := dhe_psk, 
+        cipher := null, 
+        mac := sha384}) ->
     ?TLS_DHE_PSK_WITH_NULL_SHA384;
-suite({rsa_psk, null, sha256}) ->
+suite(#{key_exchange := rsa_psk, 
+        cipher := null,  
+        mac := sha256}) ->
     ?TLS_RSA_PSK_WITH_NULL_SHA256;
-suite({rsa_psk, null, sha384}) ->
+suite(#{key_exchange := rsa_psk, 
+       cipher := null, 
+       mac := sha384}) ->
     ?TLS_RSA_PSK_WITH_NULL_SHA384;
-
 %%% ECDHE PSK Cipher Suites RFC 5489
-
-suite({ecdhe_psk, rc4_128,sha}) ->
+suite(#{key_exchange := ecdhe_psk, 
+        cipher := rc4_128,
+        mac := sha}) ->
     ?TLS_ECDHE_PSK_WITH_RC4_128_SHA;
-suite({ecdhe_psk, '3des_ede_cbc',sha}) ->
+suite(#{key_exchange := ecdhe_psk, 
+        cipher :='3des_ede_cbc',
+        mac := sha}) ->
     ?TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA;
-suite({ecdhe_psk, aes_128_cbc,sha}) ->
+suite(#{key_exchange := ecdhe_psk, 
+        cipher := aes_128_cbc,
+        mac := sha}) ->
     ?TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA;
-suite({ecdhe_psk, aes_256_cbc,sha}) ->
+suite(#{key_exchange := ecdhe_psk, 
+        cipher := aes_256_cbc,
+        mac := sha}) ->
     ?TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA;
-suite({ecdhe_psk, aes_128_cbc, sha256}) ->
+suite(#{key_exchange := ecdhe_psk, 
+       cipher := aes_128_cbc, 
+       mac := sha256}) ->
     ?TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256;
-suite({ecdhe_psk, aes_256_cbc, sha384}) ->
+suite(#{key_exchange := ecdhe_psk, 
+       cipher := aes_256_cbc, 
+       mac := sha384}) ->
     ?TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384;
-suite({ecdhe_psk, null, sha256}) ->
+suite(#{key_exchange := ecdhe_psk, 
+       cipher := null, 
+       mac := sha256}) ->
     ?TLS_ECDHE_PSK_WITH_NULL_SHA256;
-suite({ecdhe_psk, null, sha384}) ->
+suite(#{key_exchange := ecdhe_psk, 
+       cipher := null, 
+       mac := sha384}) ->
     ?TLS_ECDHE_PSK_WITH_NULL_SHA384;
-
 %%% ECDHE_PSK with AES-GCM and AES-CCM Cipher Suites, draft-ietf-tls-ecdhe-psk-aead-05
-
-suite({ecdhe_psk, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := ecdhe_psk, 
+       cipher := aes_128_gcm, 
+       mac := null, 
+       prf := sha256}) ->
     ?TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256;
-suite({ecdhe_psk, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := ecdhe_psk, 
+       cipher := aes_256_gcm, 
+       mac := null, 
+       prf := sha384}) ->
     ?TLS_ECDHE_PSK_WITH_AES_256_GCM_SHA384;
-%% suite({ecdhe_psk, aes_128_ccm, null, sha256}) ->
-%%     ?TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256;
-%% suite({ecdhe_psk, aes_256_ccm, null, sha256}) ->
-%%     ?TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256;
-
+ %% suite(#{key_exchange := ecdhe_psk, 
+ %%        cipher := aes_128_ccm, 
+ %%        mac := null, 
+ %%        prf := sha256}) ->
+ %%    ?TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256;
+ %% suite(#{key_exchange := ecdhe_psk, 
+ %%         cipher := aes_256_ccm, 
+ %%         mac := null, 
+ %%         prf := sha256}) ->
+ %%    ?TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256;
 %%% SRP Cipher Suites RFC 5054
-
-suite({srp_anon, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := srp_anon, 
+        cipher := '3des_ede_cbc',
+        mac :=  sha}) ->
     ?TLS_SRP_SHA_WITH_3DES_EDE_CBC_SHA;
-suite({srp_rsa, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := srp_rsa, 
+        cipher := '3des_ede_cbc',
+        mac := sha}) ->
     ?TLS_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA;
-suite({srp_dss, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := srp_dss, 
+        cipher := '3des_ede_cbc', 
+        mac := sha}) ->
     ?TLS_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA;
-suite({srp_anon, aes_128_cbc, sha}) ->
+suite(#{key_exchange := srp_anon, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_SRP_SHA_WITH_AES_128_CBC_SHA;
-suite({srp_rsa, aes_128_cbc, sha}) ->
+suite(#{key_exchange := srp_rsa, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_SRP_SHA_RSA_WITH_AES_128_CBC_SHA;
-suite({srp_dss, aes_128_cbc, sha}) ->
+suite(#{key_exchange := srp_dss, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_SRP_SHA_DSS_WITH_AES_128_CBC_SHA;
-suite({srp_anon, aes_256_cbc, sha}) ->
+suite(#{key_exchange := srp_anon, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_SRP_SHA_WITH_AES_256_CBC_SHA;
-suite({srp_rsa, aes_256_cbc, sha}) ->
+suite(#{key_exchange := srp_rsa, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_SRP_SHA_RSA_WITH_AES_256_CBC_SHA;
-suite({srp_dss, aes_256_cbc, sha}) ->
+suite(#{key_exchange := srp_dss, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_SRP_SHA_DSS_WITH_AES_256_CBC_SHA;
-
 %%% RFC 4492 EC TLS suites
-suite({ecdh_ecdsa, null, sha}) ->
+suite(#{key_exchange := ecdh_ecdsa, 
+        cipher := null, 
+        mac := sha}) ->
     ?TLS_ECDH_ECDSA_WITH_NULL_SHA;
-suite({ecdh_ecdsa, rc4_128, sha}) ->
+suite(#{key_exchange := ecdh_ecdsa, 
+        cipher := rc4_128,  
+        mac := sha})  ->
     ?TLS_ECDH_ECDSA_WITH_RC4_128_SHA;
-suite({ecdh_ecdsa, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := ecdh_ecdsa, 
+        cipher := '3des_ede_cbc', 
+        mac := sha}) ->
     ?TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA;
-suite({ecdh_ecdsa, aes_128_cbc, sha}) ->
+suite(#{key_exchange := ecdh_ecdsa, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA;
-suite({ecdh_ecdsa, aes_256_cbc, sha}) ->
+suite(#{key_exchange := ecdh_ecdsa, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA;
-
-suite({ecdhe_ecdsa, null, sha}) ->
+suite(#{key_exchange := ecdhe_ecdsa, 
+        cipher := null, 
+        mac := sha}) ->
     ?TLS_ECDHE_ECDSA_WITH_NULL_SHA;
-suite({ecdhe_ecdsa, rc4_128, sha}) ->
+suite(#{key_exchange := ecdhe_ecdsa, 
+        cipher := rc4_128, 
+        mac := sha}) ->
     ?TLS_ECDHE_ECDSA_WITH_RC4_128_SHA;
-suite({ecdhe_ecdsa, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := ecdhe_ecdsa, 
+        cipher := '3des_ede_cbc', 
+        mac := sha}) ->
     ?TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA;
-suite({ecdhe_ecdsa, aes_128_cbc, sha}) ->
+suite(#{key_exchange := ecdhe_ecdsa, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA;
-suite({ecdhe_ecdsa, aes_256_cbc, sha}) ->
+suite(#{key_exchange := ecdhe_ecdsa, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA;
-
-suite({ecdh_rsa, null, sha}) ->
+suite(#{key_exchange := ecdh_rsa, 
+        cipher := null, 
+        mac := sha}) ->
     ?TLS_ECDH_RSA_WITH_NULL_SHA;
-suite({ecdh_rsa, rc4_128, sha}) ->
+suite(#{key_exchange := ecdh_rsa, 
+        cipher := rc4_128, 
+        mac := sha}) ->
     ?TLS_ECDH_RSA_WITH_RC4_128_SHA;
-suite({ecdh_rsa, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := ecdh_rsa, 
+        cipher := '3des_ede_cbc', mac := sha}) ->
     ?TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA;
-suite({ecdh_rsa, aes_128_cbc, sha}) ->
+suite(#{key_exchange := ecdh_rsa, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_ECDH_RSA_WITH_AES_128_CBC_SHA;
-suite({ecdh_rsa, aes_256_cbc, sha}) ->
+suite(#{key_exchange := ecdh_rsa, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_ECDH_RSA_WITH_AES_256_CBC_SHA;
-
-suite({ecdhe_rsa, null, sha}) ->
+suite(#{key_exchange := ecdhe_rsa, 
+        cipher := null, 
+        mac := sha}) ->
     ?TLS_ECDHE_RSA_WITH_NULL_SHA;
-suite({ecdhe_rsa, rc4_128, sha}) ->
+suite(#{key_exchange := ecdhe_rsa, 
+        cipher := rc4_128, 
+        mac := sha}) ->
     ?TLS_ECDHE_RSA_WITH_RC4_128_SHA;
-suite({ecdhe_rsa, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := ecdhe_rsa, 
+        cipher := '3des_ede_cbc', 
+        mac := sha}) ->
     ?TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA;
-suite({ecdhe_rsa, aes_128_cbc, sha}) ->
+suite(#{key_exchange := ecdhe_rsa, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA;
-suite({ecdhe_rsa, aes_256_cbc, sha}) ->
+suite(#{key_exchange := ecdhe_rsa, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA;
-
-suite({ecdh_anon, null, sha}) ->
+suite(#{key_exchange := ecdh_anon, 
+        cipher := null, 
+        mac := sha}) ->
     ?TLS_ECDH_anon_WITH_NULL_SHA;
-suite({ecdh_anon, rc4_128, sha}) ->
+suite(#{key_exchange := ecdh_anon, 
+        cipher := rc4_128, 
+        mac := sha}) ->
     ?TLS_ECDH_anon_WITH_RC4_128_SHA;
-suite({ecdh_anon, '3des_ede_cbc', sha}) ->
+suite(#{key_exchange := ecdh_anon, 
+        cipher := '3des_ede_cbc', 
+        mac :=  sha}) ->
     ?TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA;
-suite({ecdh_anon, aes_128_cbc, sha}) ->
+suite(#{key_exchange := ecdh_anon, 
+        cipher := aes_128_cbc, 
+        mac := sha}) ->
     ?TLS_ECDH_anon_WITH_AES_128_CBC_SHA;
-suite({ecdh_anon, aes_256_cbc, sha}) ->
+suite(#{key_exchange := ecdh_anon, 
+        cipher := aes_256_cbc, 
+        mac := sha}) ->
     ?TLS_ECDH_anon_WITH_AES_256_CBC_SHA;
-
 %%% RFC 5289 EC TLS suites
-suite({ecdhe_ecdsa, aes_128_cbc, sha256, sha256}) ->
+suite(#{key_exchange := ecdhe_ecdsa, 
+        cipher := aes_128_cbc, 
+        mac:= sha256, 
+        prf := sha256}) ->
     ?TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256;
-suite({ecdhe_ecdsa, aes_256_cbc, sha384, sha384}) ->
+suite(#{key_exchange := ecdhe_ecdsa, 
+        cipher := aes_256_cbc, 
+        mac := sha384, 
+        prf := sha384}) ->
     ?TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384;
-suite({ecdh_ecdsa, aes_128_cbc, sha256, sha256}) ->
+suite(#{key_exchange := ecdh_ecdsa, 
+        cipher := aes_128_cbc, 
+        mac := sha256, 
+        prf := sha256}) ->
     ?TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256;
-suite({ecdh_ecdsa, aes_256_cbc, sha384, sha384}) ->
+suite(#{key_exchange := ecdh_ecdsa, 
+        cipher := aes_256_cbc, 
+        mac := sha384, 
+        prf := sha384}) ->
     ?TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384;
-suite({ecdhe_rsa, aes_128_cbc, sha256, sha256}) ->
+suite(#{key_exchange := ecdhe_rsa, 
+        cipher := aes_128_cbc, 
+        mac := sha256, 
+        prf := sha256}) ->
     ?TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256;
-suite({ecdhe_rsa, aes_256_cbc, sha384, sha384}) ->
+suite(#{key_exchange := ecdhe_rsa, 
+        cipher := aes_256_cbc, 
+        mac := sha384, 
+        prf := sha384}) ->
     ?TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384;
-suite({ecdh_rsa, aes_128_cbc, sha256, sha256}) ->
+suite(#{key_exchange := ecdh_rsa, 
+        cipher := aes_128_cbc, 
+        mac := sha256, 
+        prf := sha256}) ->
     ?TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256;
-suite({ecdh_rsa, aes_256_cbc, sha384, sha384}) ->
+suite(#{key_exchange := ecdh_rsa, 
+        cipher := aes_256_cbc, 
+        mac := sha384, 
+        prf := sha384}) ->
     ?TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384;
-
 %% RFC 5288 AES-GCM Cipher Suites
-suite({rsa, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := rsa, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_RSA_WITH_AES_128_GCM_SHA256;
-suite({rsa, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := rsa, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_RSA_WITH_AES_256_GCM_SHA384;
-suite({dhe_rsa, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := dhe_rsa, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_DHE_RSA_WITH_AES_128_GCM_SHA256;
-suite({dhe_rsa, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := dhe_rsa, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_DHE_RSA_WITH_AES_256_GCM_SHA384;
-suite({dh_rsa, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := dh_rsa, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_DH_RSA_WITH_AES_128_GCM_SHA256;
-suite({dh_rsa, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := dh_rsa, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_DH_RSA_WITH_AES_256_GCM_SHA384;
-suite({dhe_dss, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := dhe_dss, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_DHE_DSS_WITH_AES_128_GCM_SHA256;
-suite({dhe_dss, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := dhe_dss, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_DHE_DSS_WITH_AES_256_GCM_SHA384;
-suite({dh_dss, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := dh_dss, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_DH_DSS_WITH_AES_128_GCM_SHA256;
-suite({dh_dss, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := dh_dss, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_DH_DSS_WITH_AES_256_GCM_SHA384;
-suite({dh_anon, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := dh_anon, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_DH_anon_WITH_AES_128_GCM_SHA256;
-suite({dh_anon, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := dh_anon, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_DH_anon_WITH_AES_256_GCM_SHA384;
-
 %% RFC 5289 ECC AES-GCM Cipher Suites
-suite({ecdhe_ecdsa, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := ecdhe_ecdsa, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256;
-suite({ecdhe_ecdsa, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := ecdhe_ecdsa, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384;
-suite({ecdh_ecdsa, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := ecdh_ecdsa, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256;
-suite({ecdh_ecdsa, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := ecdh_ecdsa, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384;
-suite({ecdhe_rsa, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := ecdhe_rsa, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256;
-suite({ecdhe_rsa, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := ecdhe_rsa, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384;
-suite({ecdh_rsa, aes_128_gcm, null, sha256}) ->
+suite(#{key_exchange := ecdh_rsa, 
+        cipher := aes_128_gcm, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256;
-suite({ecdh_rsa, aes_256_gcm, null, sha384}) ->
+suite(#{key_exchange := ecdh_rsa, 
+        cipher := aes_256_gcm, 
+        mac := null, 
+        prf := sha384}) ->
     ?TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384;
-
-
 %% draft-agl-tls-chacha20poly1305-04 Chacha20/Poly1305 Suites
-suite({ecdhe_rsa, chacha20_poly1305, null, sha256}) ->
+suite(#{key_exchange := ecdhe_rsa, 
+        cipher := chacha20_poly1305,  
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256;
-suite({ecdhe_ecdsa, chacha20_poly1305, null, sha256}) ->
+suite(#{key_exchange := ecdhe_ecdsa, 
+        cipher := chacha20_poly1305, 
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256;
-suite({dhe_rsa, chacha20_poly1305, null, sha256}) ->
+suite(#{key_exchange := dhe_rsa, 
+        cipher := chacha20_poly1305,  
+        mac := null, 
+        prf := sha256}) ->
     ?TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256.
 
 %%--------------------------------------------------------------------
@@ -1516,14 +2185,13 @@ filter(DerCert, Ciphers) ->
 %%
 %% Description: Filter suites for algorithms supported by crypto.
 %%-------------------------------------------------------------------
-filter_suites(Suites = [Value|_]) when is_tuple(Value) ->
+filter_suites(Suites = [Value|_]) when is_map(Value) ->
     Algos = crypto:supports(),
     Hashs =  proplists:get_value(hashs, Algos),
-    lists:filter(fun({KeyExchange, Cipher, Hash}) ->
-			 is_acceptable_keyexchange(KeyExchange,  proplists:get_value(public_keys, Algos)) andalso
-			     is_acceptable_cipher(Cipher,  proplists:get_value(ciphers, Algos)) andalso
-			     is_acceptable_hash(Hash,  proplists:get_value(hashs, Algos));
-		    ({KeyExchange, Cipher, Hash, Prf}) ->
+    lists:filter(fun(#{key_exchange := KeyExchange, 
+                       cipher := Cipher, 
+                       mac := Hash,
+                       prf := Prf}) ->
 			 is_acceptable_keyexchange(KeyExchange, proplists:get_value(public_keys, Algos)) andalso
 			     is_acceptable_cipher(Cipher, proplists:get_value(ciphers, Algos)) andalso
 			     is_acceptable_hash(Hash, Hashs) andalso
@@ -1534,9 +2202,12 @@ filter_suites(Suites) ->
     Algos = crypto:supports(),
     Hashs =  proplists:get_value(hashs, Algos),
     lists:filter(fun(Suite) ->
-			 {KeyExchange, Cipher, Hash, Prf} = ssl_cipher:suite_definition(Suite),
+			 #{key_exchange := KeyExchange, 
+                           cipher := Cipher, 
+                           mac := Hash,
+                           prf := Prf} = suite_definition(Suite),
 			 is_acceptable_keyexchange(KeyExchange, proplists:get_value(public_keys, Algos)) andalso
-			     is_acceptable_cipher(Cipher,  proplists:get_value(ciphers, Algos)) andalso
+			     is_acceptable_cipher(Cipher, proplists:get_value(ciphers, Algos)) andalso
 			     is_acceptable_hash(Hash, Hashs) andalso
 			     is_acceptable_prf(Prf, Hashs)
 		 end, Suites).
diff --git a/lib/ssl/src/ssl_config.erl b/lib/ssl/src/ssl_config.erl
index e4611995ec..022fb7eac0 100644
--- a/lib/ssl/src/ssl_config.erl
+++ b/lib/ssl/src/ssl_config.erl
@@ -91,7 +91,15 @@ init_certificates(undefined, #{pem_cache := PemCache} = Config, CertFile, server
     end;
 init_certificates(Cert, Config, _, _) ->
     {ok, Config#{own_certificate => Cert}}.
-        
+init_private_key(_, #{algorithm := Alg} = Key, <<>>, _Password, _Client) when Alg == ecdsa;
+                                                                              Alg == rsa;
+                                                                              Alg == dss ->
+    case maps:is_key(engine, Key) andalso maps:is_key(key_id, Key) of
+        true ->
+            Key;
+        false ->
+            throw({key, {invalid_key_id, Key}})
+    end;
 init_private_key(_, undefined, <<>>, _Password, _Client) ->
     undefined;
 init_private_key(DbHandle, undefined, KeyFile, Password, _) ->
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index a5c7630f81..d046145dff 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -44,33 +44,35 @@
 -export([send/2, recv/3, close/2, shutdown/2,
 	 new_user/2, get_opts/2, set_opts/2, 
 	 peer_certificate/1, renegotiation/1, negotiated_protocol/1, prf/5,
-         get_sslsocket/1, handshake_complete/3,
-	 connection_information/2, handle_common_event/5
+	 connection_information/2
 	]).
 
+%% Alert and close handling
+-export([handle_own_alert/4, handle_alert/3, 
+	 handle_normal_shutdown/3, stop/2, stop_and_reply/3
+	]).
+
+%% Data handling
+-export([write_application_data/3, read_application_data/2]).
+
+%% Help functions for tls|dtls_connection.erl
+-export([handle_session/7, ssl_config/3,
+	 prepare_connection/2, hibernate_after/3]).
+
 %% General gen_statem state functions with extra callback argument 
 %% to determine if it is an SSL/TLS or DTLS gen_statem machine
--export([init/4, hello/4, abbreviated/4, certify/4, cipher/4,
+-export([init/4, error/4, hello/4, abbreviated/4, certify/4, cipher/4,
          connection/4, death_row/4, downgrade/4]).
 
 %% gen_statem callbacks
 -export([terminate/3, format_status/2]).
 
-%%
--export([handle_info/3, handle_call/5, handle_session/7, ssl_config/3,
-	 prepare_connection/2, hibernate_after/3]).
-
-%% Alert and close handling
--export([handle_own_alert/4,handle_alert/3, 
-	 handle_normal_shutdown/3 
-	]).
-
-%% Data handling
--export([write_application_data/3, read_application_data/2]).
+%% Erlang Distribution export
+-export([get_sslsocket/1, handshake_complete/3]).
 
 %%====================================================================
-%% Internal application API
-%%====================================================================	     
+%% Setup
+%%====================================================================
 %%--------------------------------------------------------------------
 -spec connect(tls_connection | dtls_connection,
 	      host(), inet:port_number(), 
@@ -166,6 +168,16 @@ socket_control(dtls_connection = Connection, {_, Socket}, Pid, Transport, Listen
 	{error, Reason}	->
 	    {error, Reason}
     end.
+
+start_or_recv_cancel_timer(infinity, _RecvFrom) ->
+    undefined;
+start_or_recv_cancel_timer(Timeout, RecvFrom) ->
+    erlang:send_after(Timeout, self(), {cancel_start_or_recv, RecvFrom}).
+
+%%====================================================================
+%% User events
+%%====================================================================
+
 %%--------------------------------------------------------------------
 -spec send(pid(), iodata()) -> ok | {error, reason()}.
 %%
@@ -281,6 +293,197 @@ handshake_complete(ConnectionPid, Node, DHandle) ->
 prf(ConnectionPid, Secret, Label, Seed, WantedLength) ->
     call(ConnectionPid, {prf, Secret, Label, Seed, WantedLength}).
 
+%%====================================================================
+%% Alert and close handling
+%%====================================================================
+handle_own_alert(Alert, Version, StateName, 
+		 #state{role = Role,
+                        transport_cb = Transport,
+                        socket = Socket,
+                        protocol_cb = Connection,
+                        connection_states = ConnectionStates,
+                        ssl_options = SslOpts} = State) ->
+    try %% Try to tell the other side
+	{BinMsg, _} =
+	Connection:encode_alert(Alert, Version, ConnectionStates),
+	Connection:send(Transport, Socket, BinMsg)
+    catch _:_ ->  %% Can crash if we are in a uninitialized state
+	    ignore
+    end,
+    try %% Try to tell the local user
+	log_alert(SslOpts#ssl_options.log_alert, Role, Connection:protocol_name(), StateName, Alert#alert{role = Role}),
+	handle_normal_shutdown(Alert,StateName, State)
+    catch _:_ ->
+	    ok
+    end,
+    stop({shutdown, own_alert}, State).
+
+handle_normal_shutdown(Alert, _, #state{socket = Socket,
+					transport_cb = Transport,
+					protocol_cb = Connection,
+					start_or_recv_from = StartFrom,
+					tracker = Tracker,
+					role = Role, renegotiation = {false, first}}) ->
+    alert_user(Transport, Tracker,Socket, StartFrom, Alert, Role, Connection);
+
+handle_normal_shutdown(Alert, StateName, #state{socket = Socket,
+						socket_options = Opts,
+						transport_cb = Transport,
+						protocol_cb = Connection,
+						user_application = {_Mon, Pid},
+						tracker = Tracker,
+						start_or_recv_from = RecvFrom, role = Role}) ->
+    alert_user(Transport, Tracker, Socket, StateName, Opts, Pid, RecvFrom, Alert, Role, Connection).
+
+handle_alert(#alert{level = ?FATAL} = Alert, StateName,
+	     #state{socket = Socket, transport_cb = Transport, 
+		    protocol_cb = Connection,
+		    ssl_options = SslOpts, start_or_recv_from = From, host = Host,
+		    port = Port, session = Session, user_application = {_Mon, Pid},
+		    role = Role, socket_options = Opts, tracker = Tracker} = State) ->
+    invalidate_session(Role, Host, Port, Session),
+    log_alert(SslOpts#ssl_options.log_alert, Role, Connection:protocol_name(), 
+              StateName, Alert#alert{role = opposite_role(Role)}),
+    alert_user(Transport, Tracker, Socket, StateName, Opts, Pid, From, Alert, Role, Connection),
+    stop(normal, State);
+
+handle_alert(#alert{level = ?WARNING, description = ?CLOSE_NOTIFY} = Alert, 
+	     StateName, State) -> 
+    handle_normal_shutdown(Alert, StateName, State),
+    stop({shutdown, peer_close}, State);
+
+handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName, 
+	     #state{role = Role, ssl_options = SslOpts, protocol_cb = Connection, renegotiation = {true, internal}} = State) ->
+    log_alert(SslOpts#ssl_options.log_alert, Role, 
+              Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
+    handle_normal_shutdown(Alert, StateName, State),
+    stop({shutdown, peer_close}, State);
+
+handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName, 
+	     #state{role = Role,
+                    ssl_options = SslOpts, renegotiation = {true, From},
+		    protocol_cb = Connection} = State0) ->
+    log_alert(SslOpts#ssl_options.log_alert,  Role,
+              Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
+    gen_statem:reply(From, {error, renegotiation_rejected}),
+    {Record, State1} = Connection:next_record(State0),
+    %% Go back to connection!
+    State = Connection:reinit_handshake_data(State1#state{renegotiation = undefined}),
+    Connection:next_event(connection, Record, State);
+
+%% Gracefully log and ignore all other warning alerts
+handle_alert(#alert{level = ?WARNING} = Alert, StateName,
+	     #state{ssl_options = SslOpts, protocol_cb = Connection, role = Role} = State0) ->
+    log_alert(SslOpts#ssl_options.log_alert,  Role,
+              Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
+    {Record, State} = Connection:next_record(State0),
+    Connection:next_event(StateName, Record, State).
+
+%%====================================================================
+%% Data handling
+%%====================================================================
+write_application_data(Data0, {FromPid, _} = From,
+		       #state{socket = Socket,
+			      negotiated_version = Version,
+			      protocol_cb = Connection,
+			      transport_cb = Transport,
+			      connection_states = ConnectionStates0,
+			      socket_options = SockOpts,
+			      ssl_options = #ssl_options{renegotiate_at = RenegotiateAt}} = State) ->
+    Data = encode_packet(Data0, SockOpts),
+    
+    case time_to_renegotiate(Data, ConnectionStates0, RenegotiateAt) of
+	true ->
+	    Connection:renegotiate(State#state{renegotiation = {true, internal}}, 
+			[{next_event, {call, From}, {application_data, Data0}}]);
+	false ->
+	    {Msgs, ConnectionStates} =
+                Connection:encode_data(Data, Version, ConnectionStates0),
+            NewState = State#state{connection_states = ConnectionStates},
+	    case Connection:send(Transport, Socket, Msgs) of
+                ok when FromPid =:= self() ->
+                    hibernate_after(connection, NewState, []);
+                Error when FromPid =:= self() ->
+                    stop({shutdown, Error}, NewState);
+                ok ->
+                    hibernate_after(connection, NewState, [{reply, From, ok}]);
+                Result ->
+                    hibernate_after(connection, NewState, [{reply, From, Result}])
+            end
+    end.
+
+read_application_data(Data, #state{user_application = {_Mon, Pid},
+				   socket = Socket,
+				   protocol_cb = Connection,
+				   transport_cb = Transport,
+				   socket_options = SOpts,
+				   bytes_to_read = BytesToRead,
+				   start_or_recv_from = RecvFrom,
+				   timer = Timer,
+				   user_data_buffer = Buffer0,
+				   tracker = Tracker} = State0) ->
+    Buffer1 = if 
+		  Buffer0 =:= <<>> -> Data;
+		  Data =:= <<>> -> Buffer0;
+		  true -> <<Buffer0/binary, Data/binary>>
+	      end,
+    case get_data(SOpts, BytesToRead, Buffer1) of
+	{ok, ClientData, Buffer} -> % Send data
+            case State0 of
+                #state{
+                   ssl_options = #ssl_options{erl_dist = true},
+                  protocol_specific = #{d_handle := DHandle}} ->
+                    State =
+                        State0#state{
+                          user_data_buffer = Buffer,
+                          bytes_to_read = undefined},
+                    try erlang:dist_ctrl_put_data(DHandle, ClientData) of
+                        _
+                          when SOpts#socket_options.active =:= false;
+                               Buffer =:= <<>> ->
+                            %% Passive mode, wait for active once or recv
+                            %% Active and empty, get more data
+                            Connection:next_record_if_active(State);
+                        _ -> %% We have more data
+                            read_application_data(<<>>, State)
+                    catch error:_ ->
+                            death_row(State, disconnect)
+                    end;
+                _ ->
+                    SocketOpt =
+                        deliver_app_data(
+                          Transport, Socket, SOpts,
+                          ClientData, Pid, RecvFrom, Tracker, Connection),
+                    cancel_timer(Timer),
+                    State =
+                        State0#state{
+                          user_data_buffer = Buffer,
+                          start_or_recv_from = undefined,
+                          timer = undefined,
+                          bytes_to_read = undefined,
+                          socket_options = SocketOpt
+                         },
+                    if
+                        SocketOpt#socket_options.active =:= false;
+                        Buffer =:= <<>> ->
+                            %% Passive mode, wait for active once or recv
+                            %% Active and empty, get more data
+                            Connection:next_record_if_active(State);
+                        true -> %% We have more data
+                            read_application_data(<<>>, State)
+                    end
+            end;
+	{more, Buffer} -> % no reply, we need more data
+	    Connection:next_record(State0#state{user_data_buffer = Buffer});
+	{passive, Buffer} ->
+	    Connection:next_record_if_active(State0#state{user_data_buffer = Buffer});
+	{error,_Reason} -> %% Invalid packet in packet mode
+	    deliver_packet_error(Transport, Socket, SOpts, Buffer1, Pid, RecvFrom, Tracker, Connection),
+            stop(normal, State0)
+    end.
+%%====================================================================
+%% Help functions for tls|dtls_connection.erl
+%%====================================================================
 %%--------------------------------------------------------------------
 -spec handle_session(#server_hello{}, ssl_record:ssl_version(),
 		     binary(), ssl_record:connection_states(), _,_, #state{}) ->
@@ -292,7 +495,7 @@ handle_session(#server_hello{cipher_suite = CipherSuite,
 	       #state{session = #session{session_id = OldId},
 		      negotiated_version = ReqVersion,
 		      negotiated_protocol = CurrentProtocol} = State0) ->
-    {KeyAlgorithm, _, _, _} =
+    #{key_exchange := KeyAlgorithm} =
 	ssl_cipher:suite_definition(CipherSuite),
     
     PremasterSecret = make_premaster_secret(ReqVersion, KeyAlgorithm),
@@ -349,7 +552,7 @@ ssl_config(Opts, Role, State) ->
 		ssl_options = Opts}.
 
 %%====================================================================
-%% gen_statem state functions
+%% gen_statem general state functions with connection cb argument
 %%====================================================================	
 %%--------------------------------------------------------------------
 -spec init(gen_statem:event_type(),
@@ -378,27 +581,36 @@ init({call, From}, {start, {Opts, EmOpts}, Timeout},
 	init({call, From}, {start, Timeout}, 
 	     State#state{ssl_options = SslOpts, socket_options = new_emulated(EmOpts, SockOpts)}, Connection)
     catch throw:Error ->
-	    {stop_and_reply, normal, {reply, From, {error, Error}}}
+	    stop_and_reply(normal, {reply, From, {error, Error}}, State0)
     end;
 init({call, From}, Msg, State, Connection) ->
-    handle_call(Msg, From, init, State, Connection);
+    handle_call(Msg, From, ?FUNCTION_NAME, State, Connection);
 init(_Type, _Event, _State, _Connection) ->
     {keep_state_and_data, [postpone]}.
 	
 %%--------------------------------------------------------------------
+-spec error(gen_statem:event_type(),
+	   {start, timeout()} | term(), #state{},
+            tls_connection | dtls_connection) ->
+		   gen_statem:state_function_result().
+%%--------------------------------------------------------------------
+error({call, From}, Msg, State, Connection) ->
+    handle_call(Msg, From, ?FUNCTION_NAME, State, Connection).
+
+%%--------------------------------------------------------------------
 -spec hello(gen_statem:event_type(),
 	    #hello_request{} | #server_hello{} | term(),
 	    #state{}, tls_connection | dtls_connection) ->
 		   gen_statem:state_function_result().
 %%--------------------------------------------------------------------
 hello({call, From}, Msg, State, Connection) ->
-    handle_call(Msg, From, hello, State, Connection);
+    handle_call(Msg, From, ?FUNCTION_NAME, State, Connection);
 hello(internal, {common_client_hello, Type, ServerHelloExt}, State, Connection) ->
     do_server_hello(Type, ServerHelloExt, State, Connection);
 hello(info, Msg, State, _) ->
-    handle_info(Msg, hello, State);
+    handle_info(Msg, ?FUNCTION_NAME, State);
 hello(Type, Msg, State, Connection) ->
-    handle_common_event(Type, Msg, hello, State, Connection).
+    handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
 
 %%--------------------------------------------------------------------
 -spec abbreviated(gen_statem:event_type(),
@@ -407,8 +619,7 @@ hello(Type, Msg, State, Connection) ->
 			 gen_statem:state_function_result().
 %%--------------------------------------------------------------------
 abbreviated({call, From}, Msg, State, Connection) ->
-    handle_call(Msg, From, abbreviated, State, Connection);
-
+    handle_call(Msg, From, ?FUNCTION_NAME, State, Connection);
 abbreviated(internal, #finished{verify_data = Data} = Finished,
 	    #state{role = server,
 		   negotiated_version = Version,
@@ -427,9 +638,8 @@ abbreviated(internal, #finished{verify_data = Data} = Finished,
 							      expecting_finished = false}, Connection),
 	    Connection:next_event(connection, Record, State);
 	#alert{} = Alert ->
-	    handle_own_alert(Alert, Version, abbreviated, State0)
+	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
     end;
-
 abbreviated(internal, #finished{verify_data = Data} = Finished,
 	    #state{role = client, tls_handshake_history = Handshake0,
 		   session = #session{master_secret = MasterSecret},
@@ -443,13 +653,12 @@ abbreviated(internal, #finished{verify_data = Data} = Finished,
 		ssl_record:set_server_verify_data(current_read, Data, ConnectionStates0),
 	    {State1, Actions} =
 		finalize_handshake(State0#state{connection_states = ConnectionStates1},
-				   abbreviated, Connection),
+				   ?FUNCTION_NAME, Connection),
 	    {Record, State} = prepare_connection(State1#state{expecting_finished = false}, Connection),
 	    Connection:next_event(connection, Record, State, Actions);
 	#alert{} = Alert ->
-	    handle_own_alert(Alert, Version, abbreviated, State0)
+	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
     end;
-
 %% only allowed to send next_protocol message after change cipher spec
 %% & before finished message and it is not allowed during renegotiation
 abbreviated(internal, #next_protocol{selected_protocol = SelectedProtocol},
@@ -457,7 +666,7 @@ abbreviated(internal, #next_protocol{selected_protocol = SelectedProtocol},
 	    Connection) ->
     {Record, State} =
 	Connection:next_record(State0#state{negotiated_protocol = SelectedProtocol}),
-    Connection:next_event(abbreviated, Record, 
+    Connection:next_event(?FUNCTION_NAME, Record, 
 			  State#state{expecting_next_protocol_negotiation = false});
 abbreviated(internal, 
 	    #change_cipher_spec{type = <<1>>},  #state{connection_states = ConnectionStates0} =
@@ -466,11 +675,11 @@ abbreviated(internal,
 	ssl_record:activate_pending_connection_state(ConnectionStates0, read, Connection),
     {Record, State} = Connection:next_record(State0#state{connection_states = 
 							      ConnectionStates1}),
-    Connection:next_event(abbreviated, Record, State#state{expecting_finished = true});
+    Connection:next_event(?FUNCTION_NAME, Record, State#state{expecting_finished = true});
 abbreviated(info, Msg, State, _) ->
-    handle_info(Msg, abbreviated, State);
+    handle_info(Msg, ?FUNCTION_NAME, State);
 abbreviated(Type, Msg, State, Connection) ->
-    handle_common_event(Type, Msg, abbreviated, State, Connection).
+    handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
  
 %%--------------------------------------------------------------------
 -spec certify(gen_statem:event_type(),
@@ -480,17 +689,16 @@ abbreviated(Type, Msg, State, Connection) ->
 		     gen_statem:state_function_result().
 %%--------------------------------------------------------------------
 certify({call, From}, Msg, State, Connection) ->
-    handle_call(Msg, From, certify, State, Connection);
+    handle_call(Msg, From, ?FUNCTION_NAME, State, Connection);
 certify(info, Msg, State, _) ->
-    handle_info(Msg, certify, State);
+    handle_info(Msg, ?FUNCTION_NAME, State);
 certify(internal, #certificate{asn1_certificates = []},
 	#state{role = server, negotiated_version = Version,
 	       ssl_options = #ssl_options{verify = verify_peer,
 					  fail_if_no_peer_cert = true}} =
 	    State, _) ->
     Alert =  ?ALERT_REC(?FATAL,?HANDSHAKE_FAILURE),
-    handle_own_alert(Alert, Version, certify, State);
-
+    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State);
 certify(internal, #certificate{asn1_certificates = []},
 	#state{role = server,
 	       ssl_options = #ssl_options{verify = verify_peer,
@@ -498,32 +706,30 @@ certify(internal, #certificate{asn1_certificates = []},
 	State0, Connection) ->
     {Record, State} = 
 	Connection:next_record(State0#state{client_certificate_requested = false}),
-    Connection:next_event(certify, Record, State);
-
+    Connection:next_event(?FUNCTION_NAME, Record, State);
 certify(internal, #certificate{},
 	#state{role = server,
 	       negotiated_version = Version,
 	       ssl_options = #ssl_options{verify = verify_none}} =
 	    State, _) ->
     Alert =  ?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE, unrequested_certificate),
-    handle_own_alert(Alert, Version, certify, State);
-
+    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State);
 certify(internal, #certificate{} = Cert,
         #state{negotiated_version = Version,
 	       role = Role,
+               host = Host,
 	       cert_db = CertDbHandle,
 	       cert_db_ref = CertDbRef,
 	       crl_db = CRLDbInfo,
 	       ssl_options = Opts} = State, Connection) ->
     case ssl_handshake:certify(Cert, CertDbHandle, CertDbRef, 
-			       Opts, CRLDbInfo, Role) of
+			       Opts, CRLDbInfo, Role, Host) of
         {PeerCert, PublicKeyInfo} ->
 	    handle_peer_cert(Role, PeerCert, PublicKeyInfo,
 			     State#state{client_certificate_requested = false}, Connection);
 	#alert{} = Alert ->
-            handle_own_alert(Alert, Version, certify, State)
+            handle_own_alert(Alert, Version, ?FUNCTION_NAME, State)
     end;
-
 certify(internal, #server_key_exchange{exchange_keys = Keys},
         #state{role = client, negotiated_version = Version,
 	       key_algorithm = Alg,
@@ -553,10 +759,9 @@ certify(internal, #server_key_exchange{exchange_keys = Keys},
 				     Connection);
 		false ->
 		    handle_own_alert(?ALERT_REC(?FATAL, ?DECRYPT_ERROR),
-						Version, certify, State)
+						Version, ?FUNCTION_NAME, State)
 	    end
     end;
-
 certify(internal, #certificate_request{},
 	#state{role = client, negotiated_version = Version,
                key_algorithm = Alg} = State, _)
@@ -564,8 +769,7 @@ certify(internal, #certificate_request{},
        Alg == psk; Alg == dhe_psk; Alg == ecdhe_psk; Alg == rsa_psk;
        Alg == srp_dss; Alg == srp_rsa; Alg == srp_anon ->
     handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE),
-                     Version, certify, State);
-
+                     Version, ?FUNCTION_NAME, State);
 certify(internal, #certificate_request{} = CertRequest,
 	#state{session = #session{own_certificate = Cert},
 	       role = client,
@@ -573,13 +777,12 @@ certify(internal, #certificate_request{} = CertRequest,
 	       negotiated_version = Version} = State0, Connection) ->
     case ssl_handshake:select_hashsign(CertRequest, Cert, SupportedHashSigns, ssl:tls_version(Version)) of
 	#alert {} = Alert ->
-	    handle_own_alert(Alert, Version, certify, State0);
+	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0);
 	NegotiatedHashSign -> 
 	    {Record, State} = Connection:next_record(State0#state{client_certificate_requested = true}),
-	    Connection:next_event(certify, Record,
+	    Connection:next_event(?FUNCTION_NAME, Record,
 				  State#state{cert_hashsign_algorithm = NegotiatedHashSign})
     end;
-
 %% PSK and RSA_PSK might bypass the Server-Key-Exchange
 certify(internal, #server_hello_done{},
 	#state{session = #session{master_secret = undefined},
@@ -592,13 +795,12 @@ certify(internal, #server_hello_done{},
   when Alg == psk ->
     case ssl_handshake:premaster_secret({Alg, PSKIdentity}, PSKLookup) of
 	#alert{} = Alert ->
-	    handle_own_alert(Alert, Version, certify, State0);
+	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0);
 	PremasterSecret ->
 	    State = master_secret(PremasterSecret,
 				  State0#state{premaster_secret = PremasterSecret}),
 	    client_certify_and_key_exchange(State, Connection)
     end;
-
 certify(internal, #server_hello_done{},
 	#state{session = #session{master_secret = undefined},
 	       ssl_options = #ssl_options{user_lookup_fun = PSKLookup},
@@ -613,13 +815,12 @@ certify(internal, #server_hello_done{},
     case ssl_handshake:premaster_secret({Alg, PSKIdentity}, PSKLookup, 
 					RSAPremasterSecret) of
 	#alert{} = Alert ->
-	    handle_own_alert(Alert, Version, certify, State0);
+	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0);
 	PremasterSecret ->
 	    State = master_secret(PremasterSecret, 
 				  State0#state{premaster_secret = RSAPremasterSecret}),
 	    client_certify_and_key_exchange(State, Connection)
     end;
-
 %% Master secret was determined with help of server-key exchange msg
 certify(internal, #server_hello_done{}, 
 	#state{session = #session{master_secret = MasterSecret} = Session,
@@ -633,9 +834,8 @@ certify(internal, #server_hello_done{},
 	    State = State0#state{connection_states = ConnectionStates},
 	    client_certify_and_key_exchange(State, Connection);
 	#alert{} = Alert ->
-	    handle_own_alert(Alert, Version, certify, State0)
+	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
     end;
-
 %% Master secret is calculated from premaster_secret
 certify(internal, #server_hello_done{},
 	#state{session = Session0,
@@ -651,17 +851,15 @@ certify(internal, #server_hello_done{},
 				 session = Session},
 	    client_certify_and_key_exchange(State, Connection);
 	#alert{} = Alert ->
-	    handle_own_alert(Alert, Version, certify, State0)
+	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
     end;
-
 certify(internal = Type, #client_key_exchange{} = Msg,
 	#state{role = server,
 	       client_certificate_requested = true,
 	       ssl_options = #ssl_options{fail_if_no_peer_cert = true}} = State, 
 	Connection) ->
     %% We expect a certificate here
-    handle_common_event(Type, Msg, certify, State, Connection);
-
+    handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection);
 certify(internal, #client_key_exchange{exchange_keys = Keys},
 	State = #state{key_algorithm = KeyAlg, negotiated_version = Version}, Connection) ->
     try
@@ -669,11 +867,10 @@ certify(internal, #client_key_exchange{exchange_keys = Keys},
 				    State, Connection)
     catch
 	#alert{} = Alert ->
-	    handle_own_alert(Alert, Version, certify, State)
+	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State)
     end;
-
 certify(Type, Msg, State, Connection) ->
-    handle_common_event(Type, Msg, certify, State, Connection).
+    handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
  
 %%--------------------------------------------------------------------
 -spec cipher(gen_statem:event_type(),
@@ -682,11 +879,9 @@ certify(Type, Msg, State, Connection) ->
 		    gen_statem:state_function_result().
 %%--------------------------------------------------------------------
 cipher({call, From}, Msg, State, Connection) ->
-    handle_call(Msg, From, cipher, State, Connection);
-
+    handle_call(Msg, From, ?FUNCTION_NAME, State, Connection);
 cipher(info, Msg, State, _) ->
-    handle_info(Msg, cipher, State);
-
+    handle_info(Msg, ?FUNCTION_NAME, State);
 cipher(internal, #certificate_verify{signature = Signature, 
 				     hashsign_algorithm = CertHashSign},
        #state{role = server,
@@ -704,19 +899,17 @@ cipher(internal, #certificate_verify{signature = Signature,
 					  TLSVersion, HashSign, MasterSecret, Handshake) of
 	valid ->
 	    {Record, State} = Connection:next_record(State0),
-	    Connection:next_event(cipher, Record,
+	    Connection:next_event(?FUNCTION_NAME, Record,
 				  State#state{cert_hashsign_algorithm = HashSign});
 	#alert{} = Alert ->
-	    handle_own_alert(Alert, Version, cipher, State0)
+	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
     end;
-
 %% client must send a next protocol message if we are expecting it
 cipher(internal, #finished{},
        #state{role = server, expecting_next_protocol_negotiation = true,
 	      negotiated_protocol = undefined, negotiated_version = Version} = State0,
        _Connection) ->
-    handle_own_alert(?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE), Version, cipher, State0);
-
+    handle_own_alert(?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE), Version, ?FUNCTION_NAME, State0);
 cipher(internal, #finished{verify_data = Data} = Finished,
        #state{negotiated_version = Version,
 	      host = Host,
@@ -725,6 +918,7 @@ cipher(internal, #finished{verify_data = Data} = Finished,
 	      expecting_finished = true,
 	      session = #session{master_secret = MasterSecret}
 	      = Session0,
+              ssl_options = SslOpts,
 	      connection_states = ConnectionStates0,
 	      tls_handshake_history = Handshake0} = State, Connection) ->
     case ssl_handshake:verify_connection(ssl:tls_version(Version), Finished,
@@ -732,13 +926,12 @@ cipher(internal, #finished{verify_data = Data} = Finished,
 					 get_current_prf(ConnectionStates0, read),
 					 MasterSecret, Handshake0) of
         verified ->
-	    Session = register_session(Role, Host, Port, Session0),
+	    Session = register_session(Role, host_id(Role, Host, SslOpts), Port, Session0),
 	    cipher_role(Role, Data, Session, 
 			State#state{expecting_finished = false}, Connection);
         #alert{} = Alert ->
-	    handle_own_alert(Alert, Version, cipher, State)
+	    handle_own_alert(Alert, Version, ?FUNCTION_NAME, State)
     end;
-
 %% only allowed to send next_protocol message after change cipher spec
 %% & before finished message and it is not allowed during renegotiation
 cipher(internal, #next_protocol{selected_protocol = SelectedProtocol},
@@ -746,7 +939,7 @@ cipher(internal, #next_protocol{selected_protocol = SelectedProtocol},
 	      expecting_finished = true} = State0, Connection) ->
     {Record, State} = 
 	Connection:next_record(State0#state{negotiated_protocol = SelectedProtocol}),
-    Connection:next_event(cipher, Record, 
+    Connection:next_event(?FUNCTION_NAME, Record, 
 			  State#state{expecting_next_protocol_negotiation = false});
 cipher(internal, #change_cipher_spec{type = <<1>>},  #state{connection_states = ConnectionStates0} =
 	   State0, Connection) ->
@@ -754,9 +947,9 @@ cipher(internal, #change_cipher_spec{type = <<1>>},  #state{connection_states =
 	ssl_record:activate_pending_connection_state(ConnectionStates0, read, Connection),
     {Record, State} = Connection:next_record(State0#state{connection_states = 
 							      ConnectionStates1}),
-    Connection:next_event(cipher, Record, State#state{expecting_finished = true});
+    Connection:next_event(?FUNCTION_NAME, Record, State#state{expecting_finished = true});
 cipher(Type, Msg, State, Connection) ->
-    handle_common_event(Type, Msg, cipher, State, Connection).
+    handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
 
 %%--------------------------------------------------------------------
 -spec connection(gen_statem:event_type(), term(), 
@@ -773,10 +966,10 @@ connection({call, {FromPid, _} = From}, {application_data, Data},
      catch throw:Error ->
              case self() of
                  FromPid ->
-                     {stop, {shutdown, Error}};
+                     stop({shutdown, Error}, State);
                  _ ->
                      hibernate_after(
-                       connection, State, [{reply, From, Error}])
+                       ?FUNCTION_NAME, State, [{reply, From, Error}])
              end
      end;
 connection({call, RecvFrom}, {recv, N, Timeout},  
@@ -785,25 +978,25 @@ connection({call, RecvFrom}, {recv, N, Timeout},
     Timer = start_or_recv_cancel_timer(Timeout, RecvFrom),
     Connection:passive_receive(State0#state{bytes_to_read = N,
 					    start_or_recv_from = RecvFrom, 
-					    timer = Timer}, connection);
+					    timer = Timer}, ?FUNCTION_NAME);
 connection({call, From}, renegotiate, #state{protocol_cb = Connection} = State, 
 	   Connection) ->
     Connection:renegotiate(State#state{renegotiation = {true, From}}, []);
 connection({call, From}, peer_certificate, 
 	   #state{session = #session{peer_certificate = Cert}} = State, _) ->
-    hibernate_after(connection, State, [{reply, From,  {ok, Cert}}]); 
+    hibernate_after(?FUNCTION_NAME, State, [{reply, From,  {ok, Cert}}]); 
 connection({call, From}, {connection_information, true}, State, _) ->
     Info = connection_info(State) ++ security_info(State),
-    hibernate_after(connection, State, [{reply, From, {ok, Info}}]);
+    hibernate_after(?FUNCTION_NAME, State, [{reply, From, {ok, Info}}]);
 connection({call, From}, {connection_information, false}, State, _) ->
     Info = connection_info(State),
-    hibernate_after(connection, State, [{reply, From, {ok, Info}}]);
+    hibernate_after(?FUNCTION_NAME, State, [{reply, From, {ok, Info}}]);
 connection({call, From}, negotiated_protocol, 
 	   #state{negotiated_protocol = undefined} = State, _) ->
-    hibernate_after(connection, State, [{reply, From, {error, protocol_not_negotiated}}]);
+    hibernate_after(?FUNCTION_NAME, State, [{reply, From, {error, protocol_not_negotiated}}]);
 connection({call, From}, negotiated_protocol, 
 	   #state{negotiated_protocol = SelectedProtocol} = State, _) ->
-    hibernate_after(connection, State,
+    hibernate_after(?FUNCTION_NAME, State,
 		    [{reply, From, {ok, SelectedProtocol}}]);
 connection(
   {call, From}, {handshake_complete, _Node, DHandle},
@@ -824,11 +1017,11 @@ connection(
                       ProtocolSpecific#{d_handle => DHandle}},
             {Record, NewerState} = Connection:next_record_if_active(NewState),
             Connection:next_event(connection, Record, NewerState, [{reply, From, ok}])
-    catch _:Reason ->
-            death_row(State, Reason)
+    catch error:_ ->
+            death_row(State, disconnect)
     end;
 connection({call, From}, Msg, State, Connection) ->
-    handle_call(Msg, From, connection, State, Connection);
+    handle_call(Msg, From, ?FUNCTION_NAME, State, Connection);
 connection(
   info, dist_data = Msg,
   #state{
@@ -836,11 +1029,25 @@ connection(
      protocol_specific = #{d_handle := DHandle}} = State,
   _) ->
     eat_msgs(Msg),
-    try send_dist_data(connection, State, DHandle, [])
-    catch _:Reason ->
-            death_row(State, Reason)
+    try send_dist_data(?FUNCTION_NAME, State, DHandle, [])
+    catch error:_ ->
+            death_row(State, disconnect)
     end;
 connection(
+  info, {send, From, Ref, Data},
+  #state{
+     ssl_options = #ssl_options{erl_dist = true},
+     protocol_specific = #{d_handle := _}},
+  _) ->
+    %% This is for testing only!
+    %%
+    %% Needed by some OTP distribution
+    %% test suites...
+    From ! {Ref, ok},
+    {keep_state_and_data,
+     [{next_event, {call, {self(), undefined}},
+       {application_data, iolist_to_binary(Data)}}]};
+connection(
   info, tick = Msg,
   #state{
      ssl_options = #ssl_options{erl_dist = true},
@@ -850,11 +1057,11 @@ connection(
     {keep_state_and_data,
      [{next_event, {call, {self(), undefined}}, {application_data, <<>>}}]};
 connection(info, Msg, State, _) ->
-    handle_info(Msg, connection, State);
+    handle_info(Msg, ?FUNCTION_NAME, State);
 connection(internal, {recv, _}, State, Connection) ->
-    Connection:passive_receive(State, connection);
+    Connection:passive_receive(State, ?FUNCTION_NAME);
 connection(Type, Msg, State, Connection) ->
-    handle_common_event(Type, Msg, connection, State, Connection).
+    handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
 
 %%--------------------------------------------------------------------
 -spec death_row(gen_statem:event_type(), term(),
@@ -865,20 +1072,22 @@ connection(Type, Msg, State, Connection) ->
 %% or the socket may die too
 death_row(
   info, {'DOWN', MonitorRef, _, _, Reason},
-  #state{user_application={MonitorRef,_Pid} = State},
+  #state{user_application={MonitorRef,_Pid}},
   _) ->
-    {stop, {shutdown, Reason}, State};
+    {stop, {shutdown, Reason}};
 death_row(
-  info, {'EXIT', Socket, Reason}, #state{socket = Socket} = State, _) ->
-    {stop, {shutdown, Reason}, State};
+  info, {'EXIT', Socket, Reason}, #state{socket = Socket}, _) ->
+    {stop, {shutdown, Reason}};
 death_row(state_timeout, Reason, _State, _Connection) ->
     {stop, {shutdown,Reason}};
-death_row(_Type, _Msg, State, _Connection) ->
-    {keep_state, State, [postpone]}.
+death_row(_Type, _Msg, _State, _Connection) ->
+    %% Waste all other events
+    keep_state_and_data.
 
 %% State entry function
 death_row(State, Reason) ->
-    {next_state, death_row, State, [{state_timeout, 5000, Reason}]}.
+    {next_state, death_row, State,
+     [{state_timeout, 5000, Reason}]}.
 
 %%--------------------------------------------------------------------
 -spec downgrade(gen_statem:event_type(), term(), 
@@ -891,12 +1100,12 @@ downgrade(internal, #alert{description = ?CLOSE_NOTIFY},
     tls_socket:setopts(Transport, Socket, [{active, false}, {packet, 0}, {mode, binary}]),
     Transport:controlling_process(Socket, Pid),
     gen_statem:reply(From, {ok, Socket}),
-    stop_normal(State);
+    stop(normal, State);
 downgrade(timeout, downgrade, #state{downgrade = {_, From}} = State, _) ->
     gen_statem:reply(From, {error, timeout}),
-    stop_normal(State);
+    stop(normal, State);
 downgrade(Type, Event, State, Connection) ->
-    handle_common_event(Type, Event, downgrade, State, Connection).
+    handle_common_event(Type, Event, ?FUNCTION_NAME, State, Connection).
 
 %%--------------------------------------------------------------------
 %% Event handling functions called by state functions to handle
@@ -909,7 +1118,7 @@ handle_common_event(internal, {handshake, {#hello_request{} = Handshake, _}}, co
 handle_common_event(internal, {handshake, {#hello_request{}, _}}, StateName, #state{role = client}, _) 
   when StateName =/= connection ->
     {keep_state_and_data};
-handle_common_event(internal, {handshake, {Handshake, Raw}}, StateName, 
+handle_common_event(internal, {handshake, {Handshake, Raw}}, StateName,
 		    #state{tls_handshake_history = Hs0,
 			   ssl_options = #ssl_options{v2_hello_compatible = V2HComp}} = State0, 
 		    Connection) ->
@@ -928,8 +1137,8 @@ handle_common_event(timeout, hibernate, _, _, _) ->
     {keep_state_and_data, [hibernate]};
 handle_common_event(internal, {application_data, Data}, StateName, State0, Connection) ->
     case read_application_data(Data, State0) of
-	{stop, Reason, State} ->
-   	    {stop, Reason, State};
+	{stop, _, _} = Stop->
+            Stop;
 	{Record, State} ->
    	    Connection:next_event(StateName, Record, State)
     end;
@@ -958,8 +1167,9 @@ handle_call({close, _} = Close, From, StateName, State, Connection) ->
     %% Run terminate before returning so that the reuseaddr
     %% inet-option works properly
     Result = Connection:terminate(Close, StateName, State#state{terminated = true}),
-    {stop_and_reply, {shutdown, normal},  
-     {reply, From, Result}, State};
+    stop_and_reply(
+      {shutdown, normal},
+      {reply, From, Result}, State);
 handle_call({shutdown, How0}, From, _,
 	    #state{transport_cb = Transport,
 		   negotiated_version = Version,
@@ -980,7 +1190,7 @@ handle_call({shutdown, How0}, From, _,
 	    {keep_state_and_data, [{reply, From, ok}]};
 	Error ->
 	    gen_statem:reply(From, {error, Error}),
-            stop_normal(State)
+            stop(normal, State)
     end;
 handle_call({recv, _N, _Timeout}, From, _,  
 		  #state{socket_options = 
@@ -1060,43 +1270,55 @@ handle_info({ErrorTag, Socket, econnaborted}, StateName,
 		   tracker = Tracker} = State)  when StateName =/= connection ->
     alert_user(Transport, Tracker,Socket, 
 	       StartFrom, ?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), Role, Connection),
-    stop_normal(State);
+    stop(normal, State);
 
 handle_info({ErrorTag, Socket, Reason}, StateName, #state{socket = Socket,
 							  error_tag = ErrorTag} = State)  ->
     Report = io_lib:format("SSL: Socket error: ~p ~n", [Reason]),
     error_logger:error_report(Report),
     handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
-    stop_normal(State);
+    stop(normal, State);
 
 handle_info(
+  {'DOWN', MonitorRef, _, _, Reason}, _,
+  #state{
+     user_application = {MonitorRef, _Pid},
+     ssl_options = #ssl_options{erl_dist = true}}) ->
+    {stop, {shutdown, Reason}};
+handle_info(
   {'DOWN', MonitorRef, _, _, _}, _,
-  #state{user_application={MonitorRef,_Pid}} = State) ->
-    stop_normal(State);
+  #state{user_application = {MonitorRef, _Pid}}) ->
+    {stop, normal};
+handle_info(
+  {'EXIT', Pid, _Reason}, StateName,
+  #state{user_application = {_MonitorRef, Pid}} = State) ->
+    %% It seems the user application has linked to us
+    %% - ignore that and let the monitor handle this
+    {next_state, StateName, State};
 
 %%% So that terminate will be run when supervisor issues shutdown
 handle_info({'EXIT', _Sup, shutdown}, _StateName, State) ->
-    {stop, shutdown, State};
+    stop(shutdown, State);
 handle_info({'EXIT', Socket, normal}, _StateName, #state{socket = Socket} = State) ->
     %% Handle as transport close"
-    {stop, {shutdown, transport_closed}, State};
+    stop({shutdown, transport_closed}, State);
 handle_info({'EXIT', Socket, Reason}, _StateName, #state{socket = Socket} = State) ->
-    {stop, {shutdown, Reason}, State};
+    stop({shutdown, Reason}, State);
 
 handle_info(allow_renegotiate, StateName, State) ->
     {next_state, StateName, State#state{allow_renegotiate = true}};
 
 handle_info({cancel_start_or_recv, StartFrom}, StateName,
 	    #state{renegotiation = {false, first}} = State) when StateName =/= connection ->
-    {stop_and_reply, {shutdown, user_timeout},  
-     {reply, StartFrom, {error, timeout}}, State#state{timer = undefined}};
-
+    stop_and_reply(
+      {shutdown, user_timeout},
+      {reply, StartFrom, {error, timeout}},
+      State#state{timer = undefined});
 handle_info({cancel_start_or_recv, RecvFrom}, StateName, 
 	    #state{start_or_recv_from = RecvFrom} = State) when RecvFrom =/= undefined ->
     {next_state, StateName, State#state{start_or_recv_from = undefined,
 					bytes_to_read = undefined,
 					timer = undefined}, [{reply, RecvFrom, {error, timeout}}]};
-
 handle_info({cancel_start_or_recv, _RecvFrom}, StateName, State) ->
     {next_state, StateName, State#state{timer = undefined}};
 
@@ -1105,41 +1327,9 @@ handle_info(Msg, StateName, #state{socket = Socket, error_tag = Tag} = State) ->
     error_logger:info_report(Report),
     {next_state, StateName, State}.
 
-
-
-send_dist_data(StateName, State, DHandle, Acc) ->
-    case erlang:dist_ctrl_get_data(DHandle) of
-        none ->
-            erlang:dist_ctrl_get_data_notification(DHandle),
-            hibernate_after(StateName, State, lists:reverse(Acc));
-        Data ->
-            send_dist_data(
-              StateName, State, DHandle,
-              [{next_event, {call, {self(), undefined}}, {application_data, Data}}
-               |Acc])
-    end.
-
-%% Overload mitigation
-eat_msgs(Msg) ->
-    receive Msg -> eat_msgs(Msg)
-    after 0 -> ok
-    end.
-
-%% When running with erl_dist the stop reason 'normal'
-%% would be too silent and prevent cleanup
-stop_normal(State) ->
-    Reason =
-        case State of
-            #state{ssl_options = #ssl_options{erl_dist = true}} ->
-                {shutdown, normal};
-            _ ->
-                normal
-        end,
-    {stop, Reason, State}.
-
-%%--------------------------------------------------------------------
-%% gen_statem callbacks
-%%--------------------------------------------------------------------
+%%====================================================================
+%% general gen_statem callbacks
+%%====================================================================
 terminate(_, _, #state{terminated = true}) ->
     %% Happens when user closes the connection using ssl:close/1
     %% we want to guarantee that Transport:close has been called
@@ -1148,7 +1338,6 @@ terminate(_, _, #state{terminated = true}) ->
     %% returning. In both cases terminate has been run manually
     %% before run by gen_statem which will end up here
     ok;
-
 terminate({shutdown, transport_closed} = Reason, 
 	  _StateName, #state{protocol_cb = Connection,
 			     socket = Socket, transport_cb = Transport} = State) ->
@@ -1175,7 +1364,6 @@ terminate(Reason, connection, #state{negotiated_version = Version,
     {BinAlert, ConnectionStates} = terminate_alert(Reason, Version, ConnectionStates0, Connection),
     Connection:send(Transport, Socket, BinAlert),
     Connection:close(Reason, Socket, Transport, ConnectionStates, Check);
-
 terminate(Reason, _StateName, #state{transport_cb = Transport, protocol_cb = Connection,
 				     socket = Socket 
 				    } = State) ->
@@ -1209,155 +1397,6 @@ format_status(terminate, [_, StateName, State]) ->
 		       }}]}].
 
 %%--------------------------------------------------------------------
-%%% 
-%%--------------------------------------------------------------------
-write_application_data(Data0, {FromPid, _} = From,
-		       #state{socket = Socket,
-			      negotiated_version = Version,
-			      protocol_cb = Connection,
-			      transport_cb = Transport,
-			      connection_states = ConnectionStates0,
-			      socket_options = SockOpts,
-			      ssl_options = #ssl_options{renegotiate_at = RenegotiateAt}} = State) ->
-    Data = encode_packet(Data0, SockOpts),
-    
-    case time_to_renegotiate(Data, ConnectionStates0, RenegotiateAt) of
-	true ->
-	    Connection:renegotiate(State#state{renegotiation = {true, internal}}, 
-			[{next_event, {call, From}, {application_data, Data0}}]);
-	false ->
-	    {Msgs, ConnectionStates} =
-                Connection:encode_data(Data, Version, ConnectionStates0),
-            NewState = State#state{connection_states = ConnectionStates},
-	    case Connection:send(Transport, Socket, Msgs) of
-                ok when FromPid =:= self() ->
-                    hibernate_after(connection, NewState, []);
-                Error when FromPid =:= self() ->
-                    {stop, {shutdown, Error}, NewState};
-                ok ->
-                    hibernate_after(connection, NewState, [{reply, From, ok}]);
-                Result ->
-                    hibernate_after(connection, NewState, [{reply, From, Result}])
-            end
-    end.
-
-read_application_data(Data, #state{user_application = {_Mon, Pid},
-				   socket = Socket,
-				   protocol_cb = Connection,
-				   transport_cb = Transport,
-				   socket_options = SOpts,
-				   bytes_to_read = BytesToRead,
-				   start_or_recv_from = RecvFrom,
-				   timer = Timer,
-				   user_data_buffer = Buffer0,
-				   tracker = Tracker} = State0) ->
-    Buffer1 = if 
-		  Buffer0 =:= <<>> -> Data;
-		  Data =:= <<>> -> Buffer0;
-		  true -> <<Buffer0/binary, Data/binary>>
-	      end,
-    case get_data(SOpts, BytesToRead, Buffer1) of
-	{ok, ClientData, Buffer} -> % Send data
-            case State0 of
-                #state{
-                   ssl_options = #ssl_options{erl_dist = true},
-                  protocol_specific = #{d_handle := DHandle}} ->
-                    State =
-                        State0#state{
-                          user_data_buffer = Buffer,
-                          bytes_to_read = undefined},
-                    try erlang:dist_ctrl_put_data(DHandle, ClientData) of
-                        _
-                          when SOpts#socket_options.active =:= false;
-                               Buffer =:= <<>> ->
-                            %% Passive mode, wait for active once or recv
-                            %% Active and empty, get more data
-                            Connection:next_record_if_active(State);
-                        _ -> %% We have more data
-                            read_application_data(<<>>, State)
-                    catch _:Reason ->
-                            death_row(State, Reason)
-                    end;
-                _ ->
-                    SocketOpt =
-                        deliver_app_data(
-                          Transport, Socket, SOpts,
-                          ClientData, Pid, RecvFrom, Tracker, Connection),
-                    cancel_timer(Timer),
-                    State =
-                        State0#state{
-                          user_data_buffer = Buffer,
-                          start_or_recv_from = undefined,
-                          timer = undefined,
-                          bytes_to_read = undefined,
-                          socket_options = SocketOpt
-                         },
-                    if
-                        SocketOpt#socket_options.active =:= false;
-                        Buffer =:= <<>> ->
-                            %% Passive mode, wait for active once or recv
-                            %% Active and empty, get more data
-                            Connection:next_record_if_active(State);
-                        true -> %% We have more data
-                            read_application_data(<<>>, State)
-                    end
-            end;
-	{more, Buffer} -> % no reply, we need more data
-	    Connection:next_record(State0#state{user_data_buffer = Buffer});
-	{passive, Buffer} ->
-	    Connection:next_record_if_active(State0#state{user_data_buffer = Buffer});
-	{error,_Reason} -> %% Invalid packet in packet mode
-	    deliver_packet_error(Transport, Socket, SOpts, Buffer1, Pid, RecvFrom, Tracker, Connection),
-            stop_normal(State0)
-    end.
-%%--------------------------------------------------------------------
-%%% 
-%%--------------------------------------------------------------------
-handle_alert(#alert{level = ?FATAL} = Alert, StateName,
-	     #state{socket = Socket, transport_cb = Transport, 
-		    protocol_cb = Connection,
-		    ssl_options = SslOpts, start_or_recv_from = From, host = Host,
-		    port = Port, session = Session, user_application = {_Mon, Pid},
-		    role = Role, socket_options = Opts, tracker = Tracker} = State) ->
-    invalidate_session(Role, Host, Port, Session),
-    log_alert(SslOpts#ssl_options.log_alert, Role, Connection:protocol_name(), 
-              StateName, Alert#alert{role = opposite_role(Role)}),
-    alert_user(Transport, Tracker, Socket, StateName, Opts, Pid, From, Alert, Role, Connection),
-    stop_normal(State);
-
-handle_alert(#alert{level = ?WARNING, description = ?CLOSE_NOTIFY} = Alert, 
-	     StateName, State) -> 
-    handle_normal_shutdown(Alert, StateName, State),
-    {stop, {shutdown, peer_close}};
-
-handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName, 
-	     #state{role = Role, ssl_options = SslOpts, protocol_cb = Connection, renegotiation = {true, internal}} = State) ->
-    log_alert(SslOpts#ssl_options.log_alert, Role, 
-              Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
-    handle_normal_shutdown(Alert, StateName, State),
-    {stop, {shutdown, peer_close}};
-
-handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName, 
-	     #state{role = Role,
-                    ssl_options = SslOpts, renegotiation = {true, From},
-		    protocol_cb = Connection} = State0) ->
-    log_alert(SslOpts#ssl_options.log_alert,  Role,
-              Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
-    gen_statem:reply(From, {error, renegotiation_rejected}),
-    {Record, State1} = Connection:next_record(State0),
-    %% Go back to connection!
-    State = Connection:reinit_handshake_data(State1#state{renegotiation = undefined}),
-    Connection:next_event(connection, Record, State);
-
-%% Gracefully log and ignore all other warning alerts
-handle_alert(#alert{level = ?WARNING} = Alert, StateName,
-	     #state{ssl_options = SslOpts, protocol_cb = Connection, role = Role} = State0) ->
-    log_alert(SslOpts#ssl_options.log_alert,  Role,
-              Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
-    {Record, State} = Connection:next_record(State0),
-    Connection:next_event(StateName, Record, State).
-
-%%--------------------------------------------------------------------
 %%% Internal functions
 %%--------------------------------------------------------------------
 connection_info(#state{sni_hostname = SNIHostname, 
@@ -1367,9 +1406,9 @@ connection_info(#state{sni_hostname = SNIHostname,
 		       negotiated_version =  {_,_} = Version, 
 		       ssl_options = Opts}) ->
     RecordCB = record_cb(Connection),
-    CipherSuiteDef = ssl_cipher:erl_suite_definition(CipherSuite),
-    IsNamedCurveSuite = lists:member(element(1,CipherSuiteDef),
-			      [ecdh_ecdsa, ecdhe_ecdsa, ecdh_anon]),
+    CipherSuiteDef = #{key_exchange := KexAlg} = ssl_cipher:suite_definition(CipherSuite),
+    IsNamedCurveSuite = lists:member(KexAlg,
+                                     [ecdh_ecdsa, ecdhe_ecdsa, ecdh_anon]),
     CurveInfo = case ECCCurve of
 		    {namedCurve, Curve} when IsNamedCurveSuite ->
 			[{ecc, {named_curve, pubkey_cert_records:namedCurves(Curve)}}];
@@ -1378,7 +1417,7 @@ connection_info(#state{sni_hostname = SNIHostname,
 		end,
     [{protocol, RecordCB:protocol_version(Version)},
      {session_id, SessionId},
-     {cipher_suite, CipherSuiteDef},
+     {cipher_suite, ssl_cipher:erl_suite_definition(CipherSuiteDef)},
      {sni_hostname, SNIHostname} | CurveInfo] ++ ssl_options_list(Opts).
 
 security_info(#state{connection_states = ConnectionStates}) ->
@@ -1446,7 +1485,7 @@ resumed_server_hello(#state{session = Session,
 
 server_hello(ServerHello, State0, Connection) ->
     CipherSuite = ServerHello#server_hello.cipher_suite,
-    {KeyAlgorithm, _, _, _} = ssl_cipher:suite_definition(CipherSuite),
+    #{key_exchange := KeyAlgorithm}  = ssl_cipher:suite_definition(CipherSuite),
     State = Connection:queue_handshake(ServerHello, State0),
     State#state{key_algorithm = KeyAlgorithm}.
 
@@ -1460,8 +1499,8 @@ handle_peer_cert(Role, PeerCert, PublicKeyInfo,
     State1 = State0#state{session =
 			 Session#session{peer_certificate = PeerCert},
 			 public_key_info = PublicKeyInfo},
-    {KeyAlg,_,_,_} = ssl_cipher:suite_definition(CipherSuite),
-    State2 = handle_peer_cert_key(Role, PeerCert, PublicKeyInfo, KeyAlg, State1),
+    #{key_exchange := KeyAlgorithm} = ssl_cipher:suite_definition(CipherSuite),
+    State2 = handle_peer_cert_key(Role, PeerCert, PublicKeyInfo, KeyAlgorithm, State1),
 
     {Record, State} = Connection:next_record(State2),
     Connection:next_event(certify, Record, State).
@@ -1474,7 +1513,6 @@ handle_peer_cert_key(client, _,
     ECDHKey = public_key:generate_key(PublicKeyParams),
     PremasterSecret = ssl_handshake:premaster_secret(PublicKey, ECDHKey),
     master_secret(PremasterSecret, State#state{diffie_hellman_keys = ECDHKey});
-
 %% We do currently not support cipher suites that use fixed DH.
 %% If we want to implement that the following clause can be used
 %% to extract DH parameters form cert.
@@ -1494,7 +1532,6 @@ certify_client(#state{client_certificate_requested = true, role = client,
 	       = State, Connection) ->
     Certificate = ssl_handshake:certificate(OwnCert, CertDbHandle, CertDbRef, client),
     Connection:queue_handshake(Certificate, State);
-
 certify_client(#state{client_certificate_requested = false} = State, _) ->
     State.
 
@@ -1544,10 +1581,26 @@ server_certify_and_key_exchange(State0, Connection) ->
     request_client_cert(State2, Connection).
 
 certify_client_key_exchange(#encrypted_premaster_secret{premaster_secret= EncPMS},
-			    #state{private_key = Key} = State, Connection) ->
-    PremasterSecret = ssl_handshake:premaster_secret(EncPMS, Key),
+			    #state{private_key = Key, client_hello_version = {Major, Minor} = Version} = State, Connection) ->
+    FakeSecret = make_premaster_secret(Version, rsa),
+    %% Countermeasure for Bleichenbacher attack always provide some kind of premaster secret
+    %% and fail handshake later.RFC 5246 section 7.4.7.1.
+    PremasterSecret =
+        try ssl_handshake:premaster_secret(EncPMS, Key) of
+            Secret when erlang:byte_size(Secret) == ?NUM_OF_PREMASTERSECRET_BYTES ->
+                case Secret of
+                    <<?BYTE(Major), ?BYTE(Minor), Rest/binary>> -> %% Correct
+                        <<?BYTE(Major), ?BYTE(Minor), Rest/binary>>;
+                    <<?BYTE(_), ?BYTE(_), Rest/binary>> -> %% Version mismatch
+                        <<?BYTE(Major), ?BYTE(Minor), Rest/binary>>
+                end;
+            _ -> %% erlang:byte_size(Secret) =/= ?NUM_OF_PREMASTERSECRET_BYTES
+                FakeSecret
+        catch 
+            #alert{description = ?DECRYPT_ERROR} ->
+                FakeSecret
+        end,    
     calculate_master_secret(PremasterSecret, State, Connection, certify, cipher);
-
 certify_client_key_exchange(#client_diffie_hellman_public{dh_public = ClientPublicDhKey},
 			    #state{diffie_hellman_params = #'DHParameter'{} = Params,
 				   diffie_hellman_keys = {_, ServerDhPrivateKey}} = State,
@@ -1559,14 +1612,12 @@ certify_client_key_exchange(#client_ec_diffie_hellman_public{dh_public = ClientP
 			    #state{diffie_hellman_keys = ECDHKey} = State, Connection) ->
     PremasterSecret = ssl_handshake:premaster_secret(#'ECPoint'{point = ClientPublicEcDhPoint}, ECDHKey),
     calculate_master_secret(PremasterSecret, State, Connection, certify, cipher);
-
 certify_client_key_exchange(#client_psk_identity{} = ClientKey,
 			    #state{ssl_options = 
 				       #ssl_options{user_lookup_fun = PSKLookup}} = State0,
 			    Connection) ->
     PremasterSecret = ssl_handshake:premaster_secret(ClientKey, PSKLookup),
     calculate_master_secret(PremasterSecret, State0, Connection, certify, cipher);
-
 certify_client_key_exchange(#client_dhe_psk_identity{} = ClientKey,
 			    #state{diffie_hellman_params = #'DHParameter'{} = Params,
 				   diffie_hellman_keys = {_, ServerDhPrivateKey},
@@ -1576,7 +1627,6 @@ certify_client_key_exchange(#client_dhe_psk_identity{} = ClientKey,
     PremasterSecret = 
 	ssl_handshake:premaster_secret(ClientKey, ServerDhPrivateKey, Params, PSKLookup),
     calculate_master_secret(PremasterSecret, State0, Connection, certify, cipher);
-
 certify_client_key_exchange(#client_ecdhe_psk_identity{} = ClientKey,
 			    #state{diffie_hellman_keys = ServerEcDhPrivateKey,
 				   ssl_options =
@@ -1585,7 +1635,6 @@ certify_client_key_exchange(#client_ecdhe_psk_identity{} = ClientKey,
     PremasterSecret =
 	ssl_handshake:premaster_secret(ClientKey, ServerEcDhPrivateKey, PSKLookup),
     calculate_master_secret(PremasterSecret, State, Connection, certify, cipher);
-
 certify_client_key_exchange(#client_rsa_psk_identity{} = ClientKey,
 			    #state{private_key = Key,
 				   ssl_options = 
@@ -1593,7 +1642,6 @@ certify_client_key_exchange(#client_rsa_psk_identity{} = ClientKey,
 			    Connection) ->
     PremasterSecret = ssl_handshake:premaster_secret(ClientKey, Key, PSKLookup),
     calculate_master_secret(PremasterSecret, State0, Connection, certify, cipher);
-
 certify_client_key_exchange(#client_srp_public{} = ClientKey,
 			    #state{srp_params = Params,
 				   srp_keys = Key
@@ -1608,7 +1656,6 @@ certify_server(#state{key_algorithm = Algo} = State, _) when Algo == dh_anon;
 							     Algo == ecdhe_psk; 
 							     Algo == srp_anon  ->
     State;
-
 certify_server(#state{cert_db = CertDbHandle,
 		      cert_db_ref = CertDbRef,
 		      session = #session{own_certificate = OwnCert}} = State, Connection) ->
@@ -1642,7 +1689,6 @@ key_exchange(#state{role = server, key_algorithm = Algo,
 					       PrivateKey}),
     State = Connection:queue_handshake(Msg, State0),
     State#state{diffie_hellman_keys = DHKeys};
-
 key_exchange(#state{role = server, private_key = Key, key_algorithm = Algo} = State, _)
   when Algo == ecdh_ecdsa; Algo == ecdh_rsa ->
     State#state{diffie_hellman_keys = Key};
@@ -1668,7 +1714,6 @@ key_exchange(#state{role = server, key_algorithm = Algo,
 				       PrivateKey}),
     State = Connection:queue_handshake(Msg, State0),
     State#state{diffie_hellman_keys = ECDHKeys};
-
 key_exchange(#state{role = server, key_algorithm = psk,
 		    ssl_options = #ssl_options{psk_identity = undefined}} = State, _) ->
     State;
@@ -1689,7 +1734,6 @@ key_exchange(#state{role = server, key_algorithm = psk,
 				      ServerRandom,
 						       PrivateKey}),
     Connection:queue_handshake(Msg, State0);
-
 key_exchange(#state{role = server, key_algorithm = dhe_psk,
 		    ssl_options = #ssl_options{psk_identity = PskIdentityHint},
 		    hashsign_algorithm = HashSignAlgo,
@@ -1711,7 +1755,6 @@ key_exchange(#state{role = server, key_algorithm = dhe_psk,
 				       PrivateKey}),
     State = Connection:queue_handshake(Msg, State0),
     State#state{diffie_hellman_keys = DHKeys};
-
 key_exchange(#state{role = server, key_algorithm = ecdhe_psk,
 		    ssl_options = #ssl_options{psk_identity = PskIdentityHint},
 		    hashsign_algorithm = HashSignAlgo,
@@ -1733,7 +1776,6 @@ key_exchange(#state{role = server, key_algorithm = ecdhe_psk,
 				       PrivateKey}),
     State = Connection:queue_handshake(Msg, State0),
     State#state{diffie_hellman_keys = ECDHKeys};
-
 key_exchange(#state{role = server, key_algorithm = rsa_psk,
 		    ssl_options = #ssl_options{psk_identity = undefined}} = State, _) ->
     State;
@@ -1754,7 +1796,6 @@ key_exchange(#state{role = server, key_algorithm = rsa_psk,
 				       ServerRandom,
 				       PrivateKey}),
     Connection:queue_handshake(Msg, State0);
-
 key_exchange(#state{role = server, key_algorithm = Algo,
 		    ssl_options = #ssl_options{user_lookup_fun = LookupFun},
 		    hashsign_algorithm = HashSignAlgo,
@@ -1785,7 +1826,6 @@ key_exchange(#state{role = server, key_algorithm = Algo,
     State = Connection:queue_handshake(Msg, State0),
     State#state{srp_params = SrpParams,
 		srp_keys = Keys};
-
 key_exchange(#state{role = client,
 		    key_algorithm = rsa,
 		    public_key_info = PublicKeyInfo,
@@ -1793,7 +1833,6 @@ key_exchange(#state{role = client,
 		    premaster_secret = PremasterSecret} = State0, Connection) ->
     Msg = rsa_key_exchange(ssl:tls_version(Version), PremasterSecret, PublicKeyInfo),
     Connection:queue_handshake(Msg, State0);
-
 key_exchange(#state{role = client,
 		    key_algorithm = Algorithm,
 		    negotiated_version = Version,
@@ -1814,7 +1853,6 @@ key_exchange(#state{role = client,
        Algorithm == ecdh_anon ->
     Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), {ecdh, Keys}),
     Connection:queue_handshake(Msg, State0);
-
 key_exchange(#state{role = client,
 		    ssl_options = SslOpts,
 		    key_algorithm = psk,
@@ -1822,7 +1860,6 @@ key_exchange(#state{role = client,
     Msg =  ssl_handshake:key_exchange(client, ssl:tls_version(Version), 
 				      {psk, SslOpts#ssl_options.psk_identity}),
     Connection:queue_handshake(Msg, State0);
-
 key_exchange(#state{role = client,
 		    ssl_options = SslOpts,
 		    key_algorithm = dhe_psk,
@@ -1853,7 +1890,6 @@ key_exchange(#state{role = client,
     Msg = rsa_psk_key_exchange(ssl:tls_version(Version), SslOpts#ssl_options.psk_identity,
 			       PremasterSecret, PublicKeyInfo),
     Connection:queue_handshake(Msg, State0);
-
 key_exchange(#state{role = client,
 		    key_algorithm = Algorithm,
 		    negotiated_version = Version,
@@ -2242,10 +2278,7 @@ set_socket_opts(_,_, _, [{active, _} = Opt| _], SockOpts, _) ->
 set_socket_opts(ConnectionCb, Transport, Socket, [Opt | Opts], SockOpts, Other) ->
     set_socket_opts(ConnectionCb, Transport, Socket, Opts, SockOpts, [Opt | Other]).
 
-start_or_recv_cancel_timer(infinity, _RecvFrom) ->
-    undefined;
-start_or_recv_cancel_timer(Timeout, RecvFrom) ->
-    erlang:send_after(Timeout, self(), {cancel_start_or_recv, RecvFrom}).
+
 
 hibernate_after(connection = StateName, 
 		#state{ssl_options=#ssl_options{hibernate_after = HibernateAfter}} = State,
@@ -2336,6 +2369,11 @@ register_session(server, _, Port, #session{is_resumable = new} = Session0) ->
 register_session(_, _, _, Session) ->
     Session. %% Already registered
 
+host_id(client, _Host, #ssl_options{server_name_indication = Hostname}) when is_list(Hostname) ->
+    Hostname;
+host_id(_, Host, _) ->
+    Host.
+
 handle_new_session(NewId, CipherSuite, Compression, 
 		   #state{session = Session0,
 			  protocol_cb = Connection} = State0) ->
@@ -2419,8 +2457,8 @@ handle_active_option(_, connection = StateName0, To, Reply, #state{protocol_cb =
 	    hibernate_after(StateName, State, [{reply, To, Reply}]);
 	{next_state, StateName, State, Actions} -> 
 	    hibernate_after(StateName, State, [{reply, To, Reply} | Actions]);
-	{stop, Reason, State} ->
-	    {stop, Reason, State}
+	{stop, _, _} = Stop ->
+	    Stop
     end;
 handle_active_option(_, StateName, To, Reply, #state{user_data_buffer = <<>>} = State) ->
     %% Active once already set 
@@ -2429,8 +2467,8 @@ handle_active_option(_, StateName, To, Reply, #state{user_data_buffer = <<>>} =
 %% user_data_buffer =/= <<>>
 handle_active_option(_, StateName0, To, Reply, #state{protocol_cb = Connection} = State0) -> 
     case read_application_data(<<>>, State0) of
-	{stop, Reason, State} ->
-	    {stop, Reason, State};
+	{stop, _, _} = Stop ->
+	    Stop;
 	{Record, State1} ->
 	    %% Note: Renogotiation may cause StateName0 =/= StateName
 	    case Connection:next_event(StateName0, Record, State1) of
@@ -2588,7 +2626,8 @@ send_or_reply(_, Pid, _From, Data) ->
     send_user(Pid, Data).
 
 send_user(Pid, Msg) ->
-    Pid ! Msg.
+    Pid ! Msg,
+    ok.
 
 alert_user(Transport, Tracker, Socket, connection, Opts, Pid, From, Alert, Role, Connection) ->
     alert_user(Transport, Tracker, Socket, Opts#socket_options.active, Pid, From, Alert, Role, Connection);
@@ -2625,45 +2664,6 @@ log_alert(true, Role, ProtocolName, StateName, Alert) ->
 log_alert(false, _, _, _, _) ->
     ok.
 
-handle_own_alert(Alert, Version, StateName, 
-		 #state{role = Role,
-                        transport_cb = Transport,
-                        socket = Socket,
-                        protocol_cb = Connection,
-                        connection_states = ConnectionStates,
-                        ssl_options = SslOpts} = State) ->
-    try %% Try to tell the other side
-	{BinMsg, _} =
-	Connection:encode_alert(Alert, Version, ConnectionStates),
-	Connection:send(Transport, Socket, BinMsg)
-    catch _:_ ->  %% Can crash if we are in a uninitialized state
-	    ignore
-    end,
-    try %% Try to tell the local user
-	log_alert(SslOpts#ssl_options.log_alert, Role, Connection:protocol_name(), StateName, Alert#alert{role = Role}),
-	handle_normal_shutdown(Alert,StateName, State)
-    catch _:_ ->
-	    ok
-    end,
-    {stop, {shutdown, own_alert}}.
-
-handle_normal_shutdown(Alert, _, #state{socket = Socket,
-					transport_cb = Transport,
-					protocol_cb = Connection,
-					start_or_recv_from = StartFrom,
-					tracker = Tracker,
-					role = Role, renegotiation = {false, first}}) ->
-    alert_user(Transport, Tracker,Socket, StartFrom, Alert, Role, Connection);
-
-handle_normal_shutdown(Alert, StateName, #state{socket = Socket,
-						socket_options = Opts,
-						transport_cb = Transport,
-						protocol_cb = Connection,
-						user_application = {_Mon, Pid},
-						tracker = Tracker,
-						start_or_recv_from = RecvFrom, role = Role}) ->
-    alert_user(Transport, Tracker, Socket, StateName, Opts, Pid, RecvFrom, Alert, Role, Connection).
-
 invalidate_session(client, Host, Port, Session) ->
     ssl_manager:invalidate_session(Host, Port, Session);
 invalidate_session(server, _, Port, Session) ->
@@ -2720,3 +2720,42 @@ new_emulated([], EmOpts) ->
     EmOpts;
 new_emulated(NewEmOpts, _) ->
     NewEmOpts.
+%%---------------Erlang distribution --------------------------------------
+
+send_dist_data(StateName, State, DHandle, Acc) ->
+    case erlang:dist_ctrl_get_data(DHandle) of
+        none ->
+            erlang:dist_ctrl_get_data_notification(DHandle),
+            hibernate_after(StateName, State, lists:reverse(Acc));
+        Data ->
+            send_dist_data(
+              StateName, State, DHandle,
+              [{next_event, {call, {self(), undefined}}, {application_data, Data}}
+               |Acc])
+    end.
+
+%% Overload mitigation
+eat_msgs(Msg) ->
+    receive Msg -> eat_msgs(Msg)
+    after 0 -> ok
+    end.
+
+%% When acting as distribution controller map the exit reason
+%% to follow the documented nodedown_reason for net_kernel
+stop(Reason, State) ->
+    {stop, erl_dist_stop_reason(Reason, State), State}.
+
+stop_and_reply(Reason, Replies, State) ->
+    {stop_and_reply, erl_dist_stop_reason(Reason, State), Replies, State}.
+
+erl_dist_stop_reason(
+  Reason, #state{ssl_options = #ssl_options{erl_dist = true}}) ->
+    case Reason of
+        normal ->
+            %% We can not exit with normal since that will not bring
+            %% down the rest of the distribution processes
+            {shutdown, normal};
+        _ -> Reason
+    end;
+erl_dist_stop_reason(Reason, _State) ->
+    Reason.
diff --git a/lib/ssl/src/ssl_connection.hrl b/lib/ssl/src/ssl_connection.hrl
index 3e26f67de1..f9d2149170 100644
--- a/lib/ssl/src/ssl_connection.hrl
+++ b/lib/ssl/src/ssl_connection.hrl
@@ -57,6 +57,7 @@
 	  session_cache_cb      :: atom(),
 	  crl_db                :: term(), 
           negotiated_version    :: ssl_record:ssl_version() | 'undefined',
+          client_hello_version  :: ssl_record:ssl_version() | 'undefined',
           client_certificate_requested = false :: boolean(),
 	  key_algorithm         :: ssl_cipher:key_algo(),
 	  hashsign_algorithm = {undefined, undefined},
diff --git a/lib/ssl/src/ssl_crl_cache.erl b/lib/ssl/src/ssl_crl_cache.erl
index 86c0207515..8817b0c884 100644
--- a/lib/ssl/src/ssl_crl_cache.erl
+++ b/lib/ssl/src/ssl_crl_cache.erl
@@ -94,7 +94,7 @@ delete({der, CRLs}) ->
 delete(URI) ->
     case http_uri:parse(URI) of
 	{ok, {http, _, _ , _, Path,_}} -> 
-	    ssl_manager:delete_crls(string:strip(Path, left, $/));
+	    ssl_manager:delete_crls(string:trim(Path, leading, "/"));
 	_ ->
 	    {error, {only_http_distribution_points_supported, URI}}
     end.
@@ -105,7 +105,7 @@ delete(URI) ->
 do_insert(URI, CRLs) ->
     case http_uri:parse(URI) of
 	{ok, {http, _, _ , _, Path,_}} -> 
-	    ssl_manager:insert_crls(string:strip(Path, left, $/), CRLs);
+	    ssl_manager:insert_crls(string:trim(Path, leading, "/"), CRLs);
 	_ ->
 	    {error, {only_http_distribution_points_supported, URI}}
     end.
@@ -162,7 +162,7 @@ cache_lookup(_, undefined) ->
     [];
 cache_lookup(URL, {{Cache, _}, _}) ->
     {ok, {_, _, _ , _, Path,_}} = http_uri:parse(URL), 
-    case ssl_pkix_db:lookup(string:strip(Path, left, $/), Cache) of
+    case ssl_pkix_db:lookup(string:trim(Path, leading, "/"), Cache) of
 	undefined ->
 	    [];
 	CRLs ->
diff --git a/lib/ssl/src/ssl_dist_sup.erl b/lib/ssl/src/ssl_dist_sup.erl
index c241a9bced..bea67935d8 100644
--- a/lib/ssl/src/ssl_dist_sup.erl
+++ b/lib/ssl/src/ssl_dist_sup.erl
@@ -30,6 +30,9 @@
 %% Supervisor callback
 -export([init/1]).
 
+%% Debug
+-export([consult/1]).
+
 %%%=========================================================================
 %%%  API
 %%%=========================================================================
@@ -37,7 +40,18 @@
 -spec start_link() -> {ok, pid()} | ignore | {error, term()}.
 			
 start_link() ->
-    supervisor:start_link({local, ?MODULE}, ?MODULE, []).
+    case init:get_argument(ssl_dist_optfile) of
+        {ok, [File]} ->
+            DistOpts = consult(File),
+            TabOpts = [set, protected, named_table],
+            Tab = ets:new(ssl_dist_opts, TabOpts),
+            true = ets:insert(Tab, DistOpts),
+            supervisor:start_link({local, ?MODULE}, ?MODULE, []);
+        {ok, BadArg} ->
+            error({bad_ssl_dist_optfile, BadArg});
+        error ->
+            supervisor:start_link({local, ?MODULE}, ?MODULE, [])
+    end.
 
 %%%=========================================================================
 %%%  Supervisor callback
@@ -68,3 +82,52 @@ ssl_connection_sup() ->
     Modules = [ssl_connection_sup],
     Type = supervisor,
     {Name, StartFunc, Restart, Shutdown, Type, Modules}.
+
+consult(File) ->
+    case erl_prim_loader:get_file(File) of
+        {ok, Binary, _FullName} ->
+            Encoding =
+                case epp:read_encoding_from_binary(Binary) of
+                    none -> latin1;
+                    Enc -> Enc
+                end,
+            case unicode:characters_to_list(Binary, Encoding) of
+                {error, _String, Rest} ->
+                    error(
+                      {bad_ssl_dist_optfile, {encoding_error, Rest}});
+                {incomplete, _String, Rest} ->
+                    error(
+                      {bad_ssl_dist_optfile, {encoding_incomplete, Rest}});
+                String when is_list(String) ->
+                    consult_string(String)
+            end;
+        error ->
+            error({bad_ssl_dist_optfile, File})
+    end.
+
+consult_string(String) ->
+    case erl_scan:string(String) of
+        {error, Info, Location} ->
+            error({bad_ssl_dist_optfile, {scan_error, Info, Location}});
+        {ok, Tokens, _EndLocation} ->
+            consult_tokens(Tokens)
+    end.
+
+consult_tokens(Tokens) ->
+    case erl_parse:parse_exprs(Tokens) of
+        {error, Info} ->
+            error({bad_ssl_dist_optfile, {parse_error, Info}});
+        {ok, [Expr]} ->
+            consult_expr(Expr);
+        {ok, Other} ->
+            error({bad_ssl_dist_optfile, {parse_error, Other}})
+    end.
+
+consult_expr(Expr) ->
+    {value, Value, Bs} = erl_eval:expr(Expr, erl_eval:new_bindings()),
+    case erl_eval:bindings(Bs) of
+        [] ->
+            Value;
+        Other ->
+            error({bad_ssl_dist_optfile, {bindings, Other}})
+    end.
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index fc4181a760..1ef298083a 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -44,46 +44,44 @@
 			 #client_key_exchange{} | #finished{} | #certificate_verify{} |
 			 #hello_request{} | #next_protocol{}.
 
-%% Handshake messages
+%% Create handshake messages
 -export([hello_request/0, server_hello/4, server_hello_done/0,
-	 certificate/4, certificate_request/5, key_exchange/3,
+	 certificate/4,  client_certificate_verify/6,  certificate_request/5, key_exchange/3,
 	 finished/5,  next_protocol/1]).
 
 %% Handle handshake messages
--export([certify/6, client_certificate_verify/6, certificate_verify/6, verify_signature/5,
+-export([certify/7, certificate_verify/6, verify_signature/5,
 	 master_secret/4, server_key_exchange_hash/2, verify_connection/6,
-	 init_handshake_history/0, update_handshake_history/3, verify_server_key/5
+	 init_handshake_history/0, update_handshake_history/3, verify_server_key/5,
+         select_version/3
 	]).
 
-%% Encode/Decode
+%% Encode
 -export([encode_handshake/2, encode_hello_extensions/1,
-	 encode_client_protocol_negotiation/2, encode_protocols_advertised_on_server/1,
-	 decode_handshake/3, decode_hello_extensions/1,
+	 encode_client_protocol_negotiation/2, encode_protocols_advertised_on_server/1]).
+%% Decode
+-export([decode_handshake/3, decode_hello_extensions/1,
 	 decode_server_key/3, decode_client_key/3,
 	 decode_suites/2
 	]).
 
 %% Cipher suites handling
--export([available_suites/2, available_signature_algs/2, cipher_suites/2,
-	 select_session/11, supported_ecc/1, available_signature_algs/4]).
+-export([available_suites/2, available_signature_algs/2,  available_signature_algs/4, 
+         cipher_suites/3, prf/6, select_session/11, supported_ecc/1,
+         premaster_secret/2, premaster_secret/3, premaster_secret/4]).
 
 %% Extensions handling
 -export([client_hello_extensions/5,
 	 handle_client_hello_extensions/9, %% Returns server hello extensions
-	 handle_server_hello_extensions/9, select_curve/2, select_curve/3
+	 handle_server_hello_extensions/9, select_curve/2, select_curve/3,
+         select_hashsign/4, select_hashsign/5,
+	 select_hashsign_algs/3
 	]).
 
-%% MISC
--export([select_version/3, prf/6,  select_hashsign/4, select_hashsign/5,
-	 select_hashsign_algs/3,
-	 premaster_secret/2, premaster_secret/3, premaster_secret/4]).
-
 %%====================================================================
-%% Internal application API
+%% Create handshake messages 
 %%====================================================================
 
-%% ---------- Create handshake messages  ----------
-
 %%--------------------------------------------------------------------
 -spec hello_request() -> #hello_request{}.
 %%
@@ -119,31 +117,6 @@ server_hello(SessionId, Version, ConnectionStates, Extensions) ->
 server_hello_done() ->
     #server_hello_done{}.
 
-client_hello_extensions(Version, CipherSuites, 
-			#ssl_options{signature_algs = SupportedHashSigns,
-				     eccs = SupportedECCs} = SslOpts, ConnectionStates, Renegotiation) ->
-    {EcPointFormats, EllipticCurves} =
-	case advertises_ec_ciphers(lists:map(fun ssl_cipher:suite_definition/1, CipherSuites)) of
-	    true ->
-		client_ecc_extensions(SupportedECCs);
-	    false ->
-		{undefined, undefined}
-	end,
-    SRP = srp_user(SslOpts),
-
-    #hello_extensions{
-       renegotiation_info = renegotiation_info(tls_record, client,
-					       ConnectionStates, Renegotiation),
-       srp = SRP,
-       signature_algs = available_signature_algs(SupportedHashSigns, Version),
-       ec_point_formats = EcPointFormats,
-       elliptic_curves = EllipticCurves,
-       alpn = encode_alpn(SslOpts#ssl_options.alpn_advertised_protocols, Renegotiation),
-       next_protocol_negotiation =
-	   encode_client_protocol_negotiation(SslOpts#ssl_options.next_protocol_selector,
-					      Renegotiation),
-       sni = sni(SslOpts#ssl_options.server_name_indication)}.
-
 %%--------------------------------------------------------------------
 -spec certificate(der_cert(), db_handle(), certdb_ref(), client | server) -> #certificate{} | #alert{}.
 %%
@@ -171,14 +144,6 @@ certificate(OwnCert, CertDbHandle, CertDbRef, server) ->
     end.
 
 %%--------------------------------------------------------------------
--spec next_protocol(binary()) -> #next_protocol{}.
-%%
-%% Description: Creates a next protocol message
-%%-------------------------------------------------------------------
-next_protocol(SelectedProtocol) ->
-  #next_protocol{selected_protocol = SelectedProtocol}.
-
-%%--------------------------------------------------------------------
 -spec client_certificate_verify(undefined | der_cert(), binary(),
 				ssl_record:ssl_version(), term(), public_key:private_key(),
 				ssl_handshake_history()) ->
@@ -346,22 +311,51 @@ key_exchange(server, Version, {srp, {PublicKey, _},
 finished(Version, Role, PrfAlgo, MasterSecret, {Handshake, _}) -> % use the current handshake
     #finished{verify_data =
 	      calc_finished(Version, Role, PrfAlgo, MasterSecret, Handshake)}.
+%%--------------------------------------------------------------------
+-spec next_protocol(binary()) -> #next_protocol{}.
+%%
+%% Description: Creates a next protocol message
+%%-------------------------------------------------------------------
+next_protocol(SelectedProtocol) ->
+  #next_protocol{selected_protocol = SelectedProtocol}.
 
-%% ---------- Handle handshake messages  ----------
+%%====================================================================
+%% Handle handshake messages 
+%%====================================================================
+%%--------------------------------------------------------------------
+-spec certify(#certificate{}, db_handle(), certdb_ref(), #ssl_options{}, term(),
+	      client | server, inet:hostname() | inet:ip_address()) ->  {der_cert(), public_key_info()} | #alert{}.
+%%
+%% Description: Handles a certificate handshake message
+%%--------------------------------------------------------------------
+certify(#certificate{asn1_certificates = ASN1Certs}, CertDbHandle, CertDbRef,
+        Opts, CRLDbHandle, Role, Host) ->    
 
-verify_server_key(#server_key_params{params_bin = EncParams,
-				     signature = Signature},
-		  HashSign = {HashAlgo, _},
-		  ConnectionStates, Version, PubKeyInfo) ->
-    #{security_parameters := SecParams} =
-	ssl_record:pending_connection_state(ConnectionStates, read),
-    #security_parameters{client_random = ClientRandom,
-			 server_random = ServerRandom} = SecParams,
-    Hash = server_key_exchange_hash(HashAlgo,
-				    <<ClientRandom/binary,
-				      ServerRandom/binary,
-				      EncParams/binary>>),
-    verify_signature(Version, Hash, HashSign, Signature, PubKeyInfo).
+    ServerName = server_name(Opts#ssl_options.server_name_indication, Host, Role),
+    [PeerCert | _] = ASN1Certs,       
+    try
+	{TrustedCert, CertPath}  =
+	    ssl_certificate:trusted_cert_and_path(ASN1Certs, CertDbHandle, CertDbRef,  
+                                                  Opts#ssl_options.partial_chain),
+        ValidationFunAndState = validation_fun_and_state(Opts#ssl_options.verify_fun, Role, 
+                                                         CertDbHandle, CertDbRef, ServerName,
+                                                         Opts#ssl_options.crl_check, CRLDbHandle, CertPath),
+	case public_key:pkix_path_validation(TrustedCert,
+					     CertPath,
+					     [{max_path_length,  Opts#ssl_options.depth},
+					      {verify_fun, ValidationFunAndState}]) of
+	    {ok, {PublicKeyInfo,_}} ->
+		{PeerCert, PublicKeyInfo};
+	    {error, Reason} ->
+		path_validation_alert(Reason)
+	end
+    catch
+	error:{badmatch,{asn1, Asn1Reason}} ->
+	    %% ASN-1 decode of certificate somehow failed
+            ?ALERT_REC(?FATAL, ?CERTIFICATE_UNKNOWN, {failed_to_decode_certificate, Asn1Reason});
+        error:OtherReason ->
+            ?ALERT_REC(?FATAL, ?INTERNAL_ERROR, {unexpected_error, OtherReason})
+    end.
 
 %%--------------------------------------------------------------------
 -spec certificate_verify(binary(), public_key_info(), ssl_record:ssl_version(), term(),
@@ -404,43 +398,55 @@ verify_signature(_, Hash, {HashAlgo, _SignAlg}, Signature,
 		 {?'id-ecPublicKey', PublicKey, PublicKeyParams}) ->
     public_key:verify({digest, Hash}, HashAlgo, Signature, {PublicKey, PublicKeyParams}).
 
-
 %%--------------------------------------------------------------------
--spec certify(#certificate{}, db_handle(), certdb_ref(), #ssl_options{}, term(),
-	      client | server) ->  {der_cert(), public_key_info()} | #alert{}.
+-spec master_secret(ssl_record:ssl_version(), #session{} | binary(), ssl_record:connection_states(),
+		   client | server) -> {binary(), ssl_record:connection_states()} | #alert{}.
 %%
-%% Description: Handles a certificate handshake message
-%%--------------------------------------------------------------------
-certify(#certificate{asn1_certificates = ASN1Certs}, CertDbHandle, CertDbRef,
-        Opts, CRLDbHandle, Role) ->    
+%% Description: Sets or calculates the master secret and calculate keys,
+%% updating the pending connection states. The Mastersecret and the update
+%% connection states are returned or an alert if the calculation fails.
+%%-------------------------------------------------------------------
+master_secret(Version, #session{master_secret = Mastersecret},
+	      ConnectionStates, Role) ->
+    #{security_parameters := SecParams} =
+	ssl_record:pending_connection_state(ConnectionStates, read),
+    try master_secret(Version, Mastersecret, SecParams,
+		      ConnectionStates, Role)
+    catch
+	exit:_ ->
+            ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, key_calculation_failure)
+    end;
 
-    [PeerCert | _] = ASN1Certs,       
-    try
-	{TrustedCert, CertPath}  =
-	    ssl_certificate:trusted_cert_and_path(ASN1Certs, CertDbHandle, CertDbRef,  
-                                                  Opts#ssl_options.partial_chain),
-        ValidationFunAndState = validation_fun_and_state(Opts#ssl_options.verify_fun, Role, 
-                                                         CertDbHandle, CertDbRef,  
-                                                         Opts#ssl_options.server_name_indication,
-                                                         Opts#ssl_options.crl_check, CRLDbHandle, CertPath),
-	case public_key:pkix_path_validation(TrustedCert,
-					     CertPath,
-					     [{max_path_length,  Opts#ssl_options.depth},
-					      {verify_fun, ValidationFunAndState}]) of
-	    {ok, {PublicKeyInfo,_}} ->
-		{PeerCert, PublicKeyInfo};
-	    {error, Reason} ->
-		path_validation_alert(Reason)
-	end
+master_secret(Version, PremasterSecret, ConnectionStates, Role) ->
+    #{security_parameters := SecParams} =
+	ssl_record:pending_connection_state(ConnectionStates, read),
+    
+    #security_parameters{prf_algorithm = PrfAlgo,
+			 client_random = ClientRandom,
+			 server_random = ServerRandom} = SecParams,
+    try master_secret(Version,
+		      calc_master_secret(Version,PrfAlgo,PremasterSecret,
+					 ClientRandom, ServerRandom),
+		      SecParams, ConnectionStates, Role)
     catch
-	error:{badmatch,{asn1, Asn1Reason}} ->
-	    %% ASN-1 decode of certificate somehow failed
-            ?ALERT_REC(?FATAL, ?CERTIFICATE_UNKNOWN, {failed_to_decode_certificate, Asn1Reason});
-        error:OtherReason ->
-            ?ALERT_REC(?FATAL, ?INTERNAL_ERROR, {unexpected_error, OtherReason})
+	exit:_ ->
+            ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, master_secret_calculation_failure)
     end.
 
 %%--------------------------------------------------------------------
+-spec server_key_exchange_hash(md5sha | md5 | sha | sha224 |sha256 | sha384 | sha512, binary()) -> binary().
+%%
+%% Description: Calculate server key exchange hash
+%%--------------------------------------------------------------------
+server_key_exchange_hash(md5sha, Value) ->
+    MD5 = crypto:hash(md5, Value),
+    SHA = crypto:hash(sha, Value),
+    <<MD5/binary, SHA/binary>>;
+
+server_key_exchange_hash(Hash, Value) ->
+    crypto:hash(Hash, Value).
+
+%%--------------------------------------------------------------------
 -spec verify_connection(ssl_record:ssl_version(), #finished{}, client | server, integer(), binary(),
 			ssl_handshake_history()) -> verified | #alert{}.
 %%
@@ -487,292 +493,31 @@ update_handshake_history(Handshake, % special-case SSL2 client hello
 update_handshake_history({Handshake0, _Prev}, Data, _) ->
     {[Data|Handshake0], Handshake0}.
 
-%% %%--------------------------------------------------------------------
-%% -spec decrypt_premaster_secret(binary(), #'RSAPrivateKey'{}) -> binary().
-
-%% %%
-%% %% Description: Public key decryption using the private key.
-%% %%--------------------------------------------------------------------
-%% decrypt_premaster_secret(Secret, RSAPrivateKey) ->
-%%     try public_key:decrypt_private(Secret, RSAPrivateKey,
-%% 				   [{rsa_pad, rsa_pkcs1_padding}])
-%%     catch
-%% 	_:_ ->
-%% 	    throw(?ALERT_REC(?FATAL, ?DECRYPT_ERROR))
-%%     end.
-
-premaster_secret(OtherPublicDhKey, MyPrivateKey, #'DHParameter'{} = Params) ->
-    try 
-	public_key:compute_key(OtherPublicDhKey, MyPrivateKey, Params)  
-    catch 
-	error:computation_failed -> 
-	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER))
-    end;	   
-premaster_secret(PublicDhKey, PrivateDhKey, #server_dh_params{dh_p = Prime, dh_g = Base}) ->
-    try 
-	crypto:compute_key(dh, PublicDhKey, PrivateDhKey, [Prime, Base])
-    catch 
-	error:computation_failed -> 
-	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER))
-    end;
-premaster_secret(#client_srp_public{srp_a = ClientPublicKey}, ServerKey, #srp_user{prime = Prime,
-										   verifier = Verifier}) ->
-    case crypto:compute_key(srp, ClientPublicKey, ServerKey, {host, [Verifier, Prime, '6a']}) of
-	error ->
-	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER));
-	PremasterSecret ->
-	    PremasterSecret
-    end;
-premaster_secret(#server_srp_params{srp_n = Prime, srp_g = Generator, srp_s = Salt, srp_b = Public},
-		 ClientKeys, {Username, Password}) ->
-    case ssl_srp_primes:check_srp_params(Generator, Prime) of
-	ok ->
-	    DerivedKey = crypto:hash(sha, [Salt, crypto:hash(sha, [Username, <<$:>>, Password])]),
-	    case crypto:compute_key(srp, Public, ClientKeys, {user, [DerivedKey, Prime, Generator, '6a']}) of
-		error ->
-		    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER));
-		PremasterSecret ->
-		    PremasterSecret
-	    end;
-	_ ->
-	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER))
-    end;
-premaster_secret(#client_rsa_psk_identity{
-		    identity = PSKIdentity,
-		    exchange_keys = #encrypted_premaster_secret{premaster_secret = EncPMS}
-		   }, #'RSAPrivateKey'{} = Key, PSKLookup) ->
-    PremasterSecret = premaster_secret(EncPMS, Key),
-    psk_secret(PSKIdentity, PSKLookup, PremasterSecret);
-premaster_secret(#server_dhe_psk_params{
-		    hint = IdentityHint,
-		    dh_params =  #server_dh_params{dh_y = PublicDhKey} = Params},
-		    PrivateDhKey,
-		    LookupFun) ->
-    PremasterSecret = premaster_secret(PublicDhKey, PrivateDhKey, Params),
-    psk_secret(IdentityHint, LookupFun, PremasterSecret);
-
-premaster_secret(#server_ecdhe_psk_params{
-		    hint = IdentityHint,
-                    dh_params = #server_ecdh_params{
-                                   public = ECServerPubKey}},
-		    PrivateEcDhKey,
-		    LookupFun) ->
-    PremasterSecret = premaster_secret(#'ECPoint'{point = ECServerPubKey}, PrivateEcDhKey),
-    psk_secret(IdentityHint, LookupFun, PremasterSecret);
-
-premaster_secret({rsa_psk, PSKIdentity}, PSKLookup, RSAPremasterSecret) ->
-    psk_secret(PSKIdentity, PSKLookup, RSAPremasterSecret);
-
-premaster_secret(#client_ecdhe_psk_identity{
-		    identity =  PSKIdentity,
-		    dh_public = PublicEcDhPoint}, PrivateEcDhKey, PSKLookup) ->
-    PremasterSecret = premaster_secret(#'ECPoint'{point = PublicEcDhPoint}, PrivateEcDhKey),
-    psk_secret(PSKIdentity, PSKLookup, PremasterSecret).
-
-premaster_secret(#client_dhe_psk_identity{
-		    identity =  PSKIdentity,
-		    dh_public = PublicDhKey}, PrivateKey, #'DHParameter'{} = Params, PSKLookup) ->
-    PremasterSecret = premaster_secret(PublicDhKey, PrivateKey, Params),
-    psk_secret(PSKIdentity, PSKLookup, PremasterSecret).
-
-premaster_secret(#client_psk_identity{identity = PSKIdentity}, PSKLookup) ->
-    psk_secret(PSKIdentity, PSKLookup);
-premaster_secret({psk, PSKIdentity}, PSKLookup) ->
-    psk_secret(PSKIdentity, PSKLookup);
-premaster_secret(#'ECPoint'{} = ECPoint, #'ECPrivateKey'{} = ECDHKeys) ->
-    public_key:compute_key(ECPoint, ECDHKeys);
-premaster_secret(EncSecret, #'RSAPrivateKey'{} = RSAPrivateKey) ->
-    try public_key:decrypt_private(EncSecret, RSAPrivateKey,
-				   [{rsa_pad, rsa_pkcs1_padding}])
-    catch
-	_:_ ->
-	    throw(?ALERT_REC(?FATAL, ?DECRYPT_ERROR))
-    end.
-%%--------------------------------------------------------------------
--spec server_key_exchange_hash(md5sha | md5 | sha | sha224 |sha256 | sha384 | sha512, binary()) -> binary().
-%%
-%% Description: Calculate server key exchange hash
-%%--------------------------------------------------------------------
-server_key_exchange_hash(md5sha, Value) ->
-    MD5 = crypto:hash(md5, Value),
-    SHA = crypto:hash(sha, Value),
-    <<MD5/binary, SHA/binary>>;
-
-server_key_exchange_hash(Hash, Value) ->
-    crypto:hash(Hash, Value).
-%%--------------------------------------------------------------------
--spec prf(ssl_record:ssl_version(), non_neg_integer(), binary(), binary(), [binary()], non_neg_integer()) ->
-		 {ok, binary()} | {error, undefined}.
-%%
-%% Description: use the TLS PRF to generate key material
-%%--------------------------------------------------------------------
-prf({3,0}, _, _, _, _, _) ->
-    {error, undefined};
-prf({3,_N}, PRFAlgo, Secret, Label, Seed, WantedLength) ->
-    {ok, tls_v1:prf(PRFAlgo, Secret, Label, Seed, WantedLength)}.
-
-
-%%--------------------------------------------------------------------
--spec select_hashsign(#hash_sign_algos{} | undefined,  undefined | binary(), 
-		      atom(), [atom()], ssl_record:ssl_version()) ->
-			     {atom(), atom()} | undefined  | #alert{}.
-
-%%
-%% Description: Handles signature_algorithms hello extension (server)
-%%--------------------------------------------------------------------
-select_hashsign(_, undefined, _,  _, _Version) ->
-    {null, anon};
-%% The signature_algorithms extension was introduced with TLS 1.2. Ignore it if we have
-%% negotiated a lower version.
-select_hashsign(HashSigns, Cert, KeyExAlgo, 
-		undefined, {Major, Minor} = Version)  when Major >= 3 andalso Minor >= 3->
-    select_hashsign(HashSigns, Cert, KeyExAlgo, tls_v1:default_signature_algs(Version), Version);
-select_hashsign(#hash_sign_algos{hash_sign_algos = HashSigns}, Cert, KeyExAlgo, SupportedHashSigns,
-		{Major, Minor}) when Major >= 3 andalso Minor >= 3 ->
-    #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
-    #'OTPCertificate'{tbsCertificate = TBSCert,
-		      signatureAlgorithm =  {_,SignAlgo, _}} = public_key:pkix_decode_cert(Cert, otp),
-    #'OTPSubjectPublicKeyInfo'{algorithm = {_, SubjAlgo, _}} = 
-     	TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
-
-    Sign = sign_algo(SignAlgo),
-    SubSing = sign_algo(SubjAlgo),
-
-    case lists:filter(fun({_, S} = Algos) when S == Sign ->
-			      is_acceptable_hash_sign(Algos, Sign,
-						      SubSing, KeyExAlgo, SupportedHashSigns);
-			 (_)  ->
-			      false
-		      end, HashSigns) of
-	[] ->
-            ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_signature_algorithm);
-	[HashSign | _] ->
-	    HashSign
-    end;
-select_hashsign(_, Cert, _, _, Version) ->
-    #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
-    #'OTPSubjectPublicKeyInfo'{algorithm = {_,Algo, _}} = TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
-    select_hashsign_algs(undefined, Algo, Version).
-%%--------------------------------------------------------------------
--spec select_hashsign(#certificate_request{},  binary(), 
-		      [atom()], ssl_record:ssl_version()) ->
-			     {atom(), atom()} | #alert{}.
-
-%%
-%% Description: Handles signature algorithms selection for certificate requests (client) 
-%%--------------------------------------------------------------------
-select_hashsign(#certificate_request{}, undefined, _, {Major, Minor})  when Major >= 3 andalso Minor >= 3->
-    %% There client does not have a certificate and will send an empty reply, the server may fail 
-    %% or accept the connection by its own preference. No signature algorihms needed as there is
-    %% no certificate to verify.
-    {undefined, undefined}; 
- 
-select_hashsign(#certificate_request{hashsign_algorithms = #hash_sign_algos{hash_sign_algos = HashSigns}, 
-				     certificate_types = Types}, Cert, SupportedHashSigns, 
-		{Major, Minor})  when Major >= 3 andalso Minor >= 3->
-    #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
-    #'OTPCertificate'{tbsCertificate = TBSCert,
-		      signatureAlgorithm =  {_,SignAlgo, _}} = public_key:pkix_decode_cert(Cert, otp),
-    #'OTPSubjectPublicKeyInfo'{algorithm = {_, SubjAlgo, _}} = 
-     	TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
-
-    Sign = sign_algo(SignAlgo),
-    SubSign = sign_algo(SubjAlgo),
-    
-    case is_acceptable_cert_type(SubSign, HashSigns, Types) andalso is_supported_sign(Sign, HashSigns) of
-	true ->
-	    case lists:filter(fun({_, S} = Algos) when S == SubSign ->
-				 is_acceptable_hash_sign(Algos, SupportedHashSigns);
-			    (_)  ->
-				      false
-			      end, HashSigns) of
-		[] ->
-		    ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_signature_algorithm);
-		[HashSign | _] ->
-		    HashSign
-	    end;
-	false ->
-	    ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_signature_algorithm)
-    end;
-select_hashsign(#certificate_request{}, Cert, _, Version) ->
-    select_hashsign(undefined, Cert, undefined, [], Version).
-
-%%--------------------------------------------------------------------
--spec select_hashsign_algs({atom(), atom()}| undefined, oid(), ssl_record:ssl_version()) ->
-				  {atom(), atom()}.
-
-%% Description: For TLS 1.2 hash function and signature algorithm pairs can be
-%% negotiated with the signature_algorithms extension,
-%% for previous versions always use appropriate defaults.
-%% RFC 5246, Sect. 7.4.1.4.1.  Signature Algorithms
-%% If the client does not send the signature_algorithms extension, the
-%% server MUST do the following: (e.i defaults for TLS 1.2)
-%%
-%% -  If the negotiated key exchange algorithm is one of (RSA, DHE_RSA,
-%%    DH_RSA, RSA_PSK, ECDH_RSA, ECDHE_RSA), behave as if client had
-%%    sent the value {sha1,rsa}.
-%%
-%% -  If the negotiated key exchange algorithm is one of (DHE_DSS,
-%%    DH_DSS), behave as if the client had sent the value {sha1,dsa}.
-%%
-%% -  If the negotiated key exchange algorithm is one of (ECDH_ECDSA,
-%%    ECDHE_ECDSA), behave as if the client had sent value {sha1,ecdsa}.
-
-%%--------------------------------------------------------------------
-select_hashsign_algs(HashSign, _, {Major, Minor}) when HashSign =/= undefined andalso
-						       Major >= 3 andalso Minor >= 3 ->
-    HashSign;
-select_hashsign_algs(undefined, ?rsaEncryption, {Major, Minor}) when Major >= 3 andalso Minor >= 3 ->
-    {sha, rsa};
-select_hashsign_algs(undefined,?'id-ecPublicKey', _) ->
-    {sha, ecdsa};
-select_hashsign_algs(undefined, ?rsaEncryption, _) -> 
-    {md5sha, rsa};
-select_hashsign_algs(undefined, ?'id-dsa', _) ->
-    {sha, dsa}.
-
-
-%%--------------------------------------------------------------------
--spec master_secret(ssl_record:ssl_version(), #session{} | binary(), ssl_record:connection_states(),
-		   client | server) -> {binary(), ssl_record:connection_states()} | #alert{}.
-%%
-%% Description: Sets or calculates the master secret and calculate keys,
-%% updating the pending connection states. The Mastersecret and the update
-%% connection states are returned or an alert if the calculation fails.
-%%-------------------------------------------------------------------
-master_secret(Version, #session{master_secret = Mastersecret},
-	      ConnectionStates, Role) ->
-    #{security_parameters := SecParams} =
-	ssl_record:pending_connection_state(ConnectionStates, read),
-    try master_secret(Version, Mastersecret, SecParams,
-		      ConnectionStates, Role)
-    catch
-	exit:_ ->
-            ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, key_calculation_failure)
-    end;
-
-master_secret(Version, PremasterSecret, ConnectionStates, Role) ->
+verify_server_key(#server_key_params{params_bin = EncParams,
+				     signature = Signature},
+		  HashSign = {HashAlgo, _},
+		  ConnectionStates, Version, PubKeyInfo) ->
     #{security_parameters := SecParams} =
 	ssl_record:pending_connection_state(ConnectionStates, read),
-    
-    #security_parameters{prf_algorithm = PrfAlgo,
-			 client_random = ClientRandom,
+    #security_parameters{client_random = ClientRandom,
 			 server_random = ServerRandom} = SecParams,
-    try master_secret(Version,
-		      calc_master_secret(Version,PrfAlgo,PremasterSecret,
-					 ClientRandom, ServerRandom),
-		      SecParams, ConnectionStates, Role)
-    catch
-	exit:_ ->
-            ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, master_secret_calculation_failure)
-    end.
+    Hash = server_key_exchange_hash(HashAlgo,
+				    <<ClientRandom/binary,
+				      ServerRandom/binary,
+				      EncParams/binary>>),
+    verify_signature(Version, Hash, HashSign, Signature, PubKeyInfo).
+
+select_version(RecordCB, ClientVersion, Versions) ->
+    do_select_version(RecordCB, ClientVersion, Versions).
+
+%%====================================================================
+%% Encode handshake 
+%%====================================================================
 
-%%-------------Encode/Decode --------------------------------
 encode_handshake(#next_protocol{selected_protocol = SelectedProtocol}, _Version) ->
     PaddingLength = 32 - ((byte_size(SelectedProtocol) + 2) rem 32),
     {?NEXT_PROTOCOL, <<?BYTE((byte_size(SelectedProtocol))), SelectedProtocol/binary,
                          ?BYTE(PaddingLength), 0:(PaddingLength * 8)>>};
-
 encode_handshake(#server_hello{server_version = {Major, Minor},
 			       random = Random,
 			       session_id = Session_ID,
@@ -894,71 +639,6 @@ encode_hello_extensions([#sni{hostname = Hostname} | Rest], Acc) ->
 				    ?UINT16(HostLen), HostnameBin/binary,
 				    Acc/binary>>).
 
-enc_server_key_exchange(Version, Params, {HashAlgo, SignAlgo},
-			ClientRandom, ServerRandom, PrivateKey) ->
-    EncParams = encode_server_key(Params),
-    case HashAlgo of
-	null ->
-	    #server_key_params{params = Params,
-			       params_bin = EncParams,
-			       hashsign = {null, anon},
-			       signature = <<>>};
-	_ ->
-	    Hash =
-		server_key_exchange_hash(HashAlgo, <<ClientRandom/binary,
-						     ServerRandom/binary,
-						     EncParams/binary>>),
-	    Signature = digitally_signed(Version, Hash, HashAlgo, PrivateKey),
-	    #server_key_params{params = Params,
-			       params_bin = EncParams,
-			       hashsign = {HashAlgo, SignAlgo},
-			       signature = Signature}
-    end.
-
-%%--------------------------------------------------------------------
--spec decode_client_key(binary(), ssl_cipher:key_algo(), ssl_record:ssl_version()) ->
-			    #encrypted_premaster_secret{}
-			    | #client_diffie_hellman_public{}
-			    | #client_ec_diffie_hellman_public{}
-			    | #client_psk_identity{}
-			    | #client_dhe_psk_identity{}
-			    | #client_ecdhe_psk_identity{}
-			    | #client_rsa_psk_identity{}
-			    | #client_srp_public{}.
-%%
-%% Description: Decode client_key data and return appropriate type
-%%--------------------------------------------------------------------
-decode_client_key(ClientKey, Type, Version) ->
-    dec_client_key(ClientKey, key_exchange_alg(Type), Version).
-
-%%--------------------------------------------------------------------
--spec decode_server_key(binary(), ssl_cipher:key_algo(), ssl_record:ssl_version()) ->
-			       #server_key_params{}.
-%%
-%% Description: Decode server_key data and return appropriate type
-%%--------------------------------------------------------------------
-decode_server_key(ServerKey, Type, Version) ->
-    dec_server_key(ServerKey, key_exchange_alg(Type), Version).
-
-%%
-%% Description: Encode and decode functions for ALPN extension data.
-%%--------------------------------------------------------------------
-
-%% While the RFC opens the door to allow ALPN during renegotiation, in practice
-%% this does not work and it is recommended to ignore any ALPN extension during
-%% renegotiation, as done here.
-encode_alpn(_, true) ->
-    undefined;
-encode_alpn(undefined, _) ->
-    undefined;
-encode_alpn(Protocols, _) ->
-    #alpn{extension_data = lists:foldl(fun encode_protocol/2, <<>>, Protocols)}.
-
-decode_alpn(undefined) ->
-    undefined;
-decode_alpn(#alpn{extension_data=Data}) ->
-    decode_protocols(Data, []).
-
 encode_client_protocol_negotiation(undefined, _) ->
     undefined;
 encode_client_protocol_negotiation(_, false) ->
@@ -972,6 +652,10 @@ encode_protocols_advertised_on_server(undefined) ->
 encode_protocols_advertised_on_server(Protocols) ->
 	#next_protocol_negotiation{extension_data = lists:foldl(fun encode_protocol/2, <<>>, Protocols)}.
 
+%%====================================================================
+%% Decode handshake 
+%%====================================================================
+
 decode_handshake(_, ?HELLO_REQUEST, <<>>) ->
     #hello_request{};
 decode_handshake(_, ?NEXT_PROTOCOL, <<?BYTE(SelectedProtocolLength),
@@ -1004,7 +688,6 @@ decode_handshake(_Version, ?SERVER_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:3
        cipher_suite = Cipher_suite,
        compression_method = Comp_method,
        extensions = HelloExtensions};
-
 decode_handshake(_Version, ?CERTIFICATE, <<?UINT24(ACLen), ASN1Certs:ACLen/binary>>) ->
     #certificate{asn1_certificates = certs_to_list(ASN1Certs)};
 decode_handshake(_Version, ?SERVER_KEY_EXCHANGE, Keys) ->
@@ -1051,83 +734,30 @@ decode_hello_extensions({client, <<?UINT16(ExtLen), Extensions:ExtLen/binary>>})
 decode_hello_extensions(Extensions) ->
     dec_hello_extensions(Extensions, #hello_extensions{}).
 
-dec_server_key(<<?UINT16(PLen), P:PLen/binary,
-		 ?UINT16(GLen), G:GLen/binary,
-		 ?UINT16(YLen), Y:YLen/binary, _/binary>> = KeyStruct,
-	       ?KEY_EXCHANGE_DIFFIE_HELLMAN, Version) ->
-    Params = #server_dh_params{dh_p = P, dh_g = G, dh_y = Y},
-    {BinMsg, HashSign, Signature} = dec_server_key_params(PLen + GLen + YLen + 6, KeyStruct, Version),
-    #server_key_params{params = Params,
-		       params_bin = BinMsg,
-		       hashsign = HashSign,
-		       signature = Signature};
-%% ECParameters with named_curve
-%% TODO: explicit curve
-dec_server_key(<<?BYTE(?NAMED_CURVE), ?UINT16(CurveID),
-		 ?BYTE(PointLen), ECPoint:PointLen/binary,
-		 _/binary>> = KeyStruct,
-	       ?KEY_EXCHANGE_EC_DIFFIE_HELLMAN, Version) ->
-    Params = #server_ecdh_params{curve = {namedCurve, tls_v1:enum_to_oid(CurveID)},
-				 public = ECPoint},
-    {BinMsg, HashSign, Signature} = dec_server_key_params(PointLen + 4, KeyStruct, Version),
-    #server_key_params{params = Params,
-		       params_bin = BinMsg,
-		       hashsign = HashSign,
-		       signature = Signature};
-dec_server_key(<<?UINT16(Len), PskIdentityHint:Len/binary, _/binary>> = KeyStruct,
-	       KeyExchange, Version)
-  when KeyExchange == ?KEY_EXCHANGE_PSK; KeyExchange == ?KEY_EXCHANGE_RSA_PSK ->
-    Params = #server_psk_params{
-		hint = PskIdentityHint},
-    {BinMsg, HashSign, Signature} = dec_server_key_params(Len + 2, KeyStruct, Version),
-    #server_key_params{params = Params,
-		       params_bin = BinMsg,
-		       hashsign = HashSign,
-		       signature = Signature};
+%%--------------------------------------------------------------------
+-spec decode_server_key(binary(), ssl_cipher:key_algo(), ssl_record:ssl_version()) ->
+			       #server_key_params{}.
+%%
+%% Description: Decode server_key data and return appropriate type
+%%--------------------------------------------------------------------
+decode_server_key(ServerKey, Type, Version) ->
+    dec_server_key(ServerKey, key_exchange_alg(Type), Version).
 
-dec_server_key(<<?UINT16(Len), IdentityHint:Len/binary,
-		 ?UINT16(PLen), P:PLen/binary,
-		 ?UINT16(GLen), G:GLen/binary,
-		 ?UINT16(YLen), Y:YLen/binary, _/binary>> = KeyStruct,
-	       ?KEY_EXCHANGE_DHE_PSK, Version) ->
-    DHParams = #server_dh_params{dh_p = P, dh_g = G, dh_y = Y},
-    Params = #server_dhe_psk_params{
-      hint = IdentityHint,
-      dh_params = DHParams},
-    {BinMsg, HashSign, Signature} = dec_server_key_params(Len + PLen + GLen + YLen + 8, KeyStruct, Version),
-    #server_key_params{params = Params,
-		       params_bin = BinMsg,
-		       hashsign = HashSign,
-		       signature = Signature};
-dec_server_key(<<?UINT16(Len), IdentityHint:Len/binary,
-		 ?BYTE(?NAMED_CURVE), ?UINT16(CurveID),
-		 ?BYTE(PointLen), ECPoint:PointLen/binary,
-		 _/binary>> = KeyStruct,
-	       ?KEY_EXCHANGE_EC_DIFFIE_HELLMAN_PSK, Version) ->
-    DHParams = #server_ecdh_params{
-                  curve = {namedCurve, tls_v1:enum_to_oid(CurveID)},
-                  public = ECPoint},
-    Params = #server_ecdhe_psk_params{
-      hint = IdentityHint,
-      dh_params = DHParams},
-    {BinMsg, HashSign, Signature} = dec_server_key_params(Len + 2 + PointLen + 4, KeyStruct, Version),
-    #server_key_params{params = Params,
-		       params_bin = BinMsg,
-		       hashsign = HashSign,
-		       signature = Signature};
-dec_server_key(<<?UINT16(NLen), N:NLen/binary,
-		 ?UINT16(GLen), G:GLen/binary,
-		 ?BYTE(SLen), S:SLen/binary,
-		 ?UINT16(BLen), B:BLen/binary, _/binary>> = KeyStruct,
-	       ?KEY_EXCHANGE_SRP, Version) ->
-    Params = #server_srp_params{srp_n = N, srp_g = G, srp_s = S, srp_b = B},
-    {BinMsg, HashSign, Signature} = dec_server_key_params(NLen + GLen + SLen + BLen + 7, KeyStruct, Version),
-    #server_key_params{params = Params,
-		       params_bin = BinMsg,
-		       hashsign = HashSign,
-		       signature = Signature};
-dec_server_key(_, KeyExchange, _) ->
-    throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {unknown_or_malformed_key_exchange, KeyExchange})).
+%%--------------------------------------------------------------------
+-spec decode_client_key(binary(), ssl_cipher:key_algo(), ssl_record:ssl_version()) ->
+			    #encrypted_premaster_secret{}
+			    | #client_diffie_hellman_public{}
+			    | #client_ec_diffie_hellman_public{}
+			    | #client_psk_identity{}
+			    | #client_dhe_psk_identity{}
+			    | #client_ecdhe_psk_identity{}
+			    | #client_rsa_psk_identity{}
+			    | #client_srp_public{}.
+%%
+%% Description: Decode client_key data and return appropriate type
+%%--------------------------------------------------------------------
+decode_client_key(ClientKey, Type, Version) ->
+    dec_client_key(ClientKey, key_exchange_alg(Type), Version).
 
 %%--------------------------------------------------------------------
 -spec decode_suites('2_bytes'|'3_bytes', binary()) -> list().
@@ -1139,7 +769,9 @@ decode_suites('2_bytes', Dec) ->
 decode_suites('3_bytes', Dec) ->
     from_3bytes(Dec).
 
-%%-------------Cipeher suite handling --------------------------------
+%%====================================================================
+%% Cipher suite handling
+%%====================================================================
 
 available_suites(UserSuites, Version) ->
     lists:filtermap(fun(Suite) ->
@@ -1152,61 +784,42 @@ available_suites(ServerCert, UserSuites, Version, undefined, Curve) ->
 available_suites(ServerCert, UserSuites, Version, HashSigns, Curve) ->
     Suites = available_suites(ServerCert, UserSuites, Version, undefined, Curve),
     filter_hashsigns(Suites, [ssl_cipher:suite_definition(Suite) || Suite <- Suites], HashSigns, []).
-filter_hashsigns([], [], _, Acc) ->
-    lists:reverse(Acc);
-filter_hashsigns([Suite | Suites], [{KeyExchange,_,_,_} | Algos], HashSigns,
-		 Acc) when KeyExchange == dhe_ecdsa;
-			   KeyExchange == ecdhe_ecdsa ->
-    do_filter_hashsigns(ecdsa, Suite, Suites, Algos, HashSigns, Acc);
 
-filter_hashsigns([Suite | Suites], [{KeyExchange,_,_,_} | Algos], HashSigns,
-		 Acc) when KeyExchange == rsa;
-			   KeyExchange == dhe_rsa;
-			   KeyExchange == ecdhe_rsa;
-			   KeyExchange == srp_rsa;
-			   KeyExchange == rsa_psk ->
-    do_filter_hashsigns(rsa, Suite, Suites, Algos, HashSigns, Acc);
-filter_hashsigns([Suite | Suites], [{KeyExchange,_,_,_} | Algos], HashSigns, Acc) when 
-      KeyExchange == dhe_dss;
-      KeyExchange == srp_dss ->							       
-    do_filter_hashsigns(dsa, Suite, Suites, Algos, HashSigns, Acc);
-filter_hashsigns([Suite | Suites], [{KeyExchange,_,_,_} | Algos], HashSigns, Acc) when 
-      KeyExchange == dh_dss; 
-      KeyExchange == dh_rsa; 
-      KeyExchange == dh_ecdsa;
-      KeyExchange == ecdh_rsa;    
-      KeyExchange == ecdh_ecdsa ->
-      %%  Fixed DH certificates MAY be signed with any hash/signature
-      %%  algorithm pair appearing in the hash_sign extension.  The names
-    %%  DH_DSS, DH_RSA, ECDH_ECDSA, and ECDH_RSA are historical.
-    filter_hashsigns(Suites, Algos, HashSigns, [Suite| Acc]);
-filter_hashsigns([Suite | Suites], [{KeyExchange,_,_,_} | Algos], HashSigns, Acc) when 
-      KeyExchange == dh_anon;
-      KeyExchange == ecdh_anon;
-      KeyExchange == srp_anon;
-      KeyExchange == psk;
-      KeyExchange == dhe_psk;
-      KeyExchange == ecdhe_psk ->
-    %% In this case hashsigns is not used as the kexchange is anonaymous
-    filter_hashsigns(Suites, Algos, HashSigns, [Suite| Acc]).
-
-do_filter_hashsigns(SignAlgo, Suite, Suites, Algos, HashSigns, Acc) ->
-    case lists:keymember(SignAlgo, 2, HashSigns) of
-	true ->
-	    filter_hashsigns(Suites, Algos, HashSigns, [Suite| Acc]);
-	false ->
-	    filter_hashsigns(Suites, Algos, HashSigns, Acc)
-    end.
-
-unavailable_ecc_suites(no_curve) ->
-    ssl_cipher:ec_keyed_suites();
-unavailable_ecc_suites(_) ->
-    [].
+available_signature_algs(undefined, _)  ->
+    undefined;
+available_signature_algs(SupportedHashSigns, Version) when Version >= {3, 3} ->
+    #hash_sign_algos{hash_sign_algos = SupportedHashSigns};
+available_signature_algs(_, _) ->
+    undefined.
+available_signature_algs(undefined, SupportedHashSigns, _, Version) when 
+      Version >= {3,3} ->
+    SupportedHashSigns;
+available_signature_algs(#hash_sign_algos{hash_sign_algos = ClientHashSigns}, SupportedHashSigns, 
+                         _, Version) when Version >= {3,3} ->
+    sets:to_list(sets:intersection(sets:from_list(ClientHashSigns), 
+				   sets:from_list(SupportedHashSigns)));
+available_signature_algs(_, _, _, _) -> 
+    undefined.
 
+cipher_suites(Suites, Renegotiation, true) ->
+    %% TLS_FALLBACK_SCSV should be placed last -RFC7507
+    cipher_suites(Suites, Renegotiation) ++ [?TLS_FALLBACK_SCSV];
+cipher_suites(Suites, Renegotiation, false) ->
+    cipher_suites(Suites, Renegotiation).
 cipher_suites(Suites, false) ->
     [?TLS_EMPTY_RENEGOTIATION_INFO_SCSV | Suites];
 cipher_suites(Suites, true) ->
     Suites.
+%%--------------------------------------------------------------------
+-spec prf(ssl_record:ssl_version(), non_neg_integer(), binary(), binary(), [binary()], non_neg_integer()) ->
+		 {ok, binary()} | {error, undefined}.
+%%
+%% Description: use the TLS PRF to generate key material
+%%--------------------------------------------------------------------
+prf({3,0}, _, _, _, _, _) ->
+    {error, undefined};
+prf({3,_N}, PRFAlgo, Secret, Label, Seed, WantedLength) ->
+    {ok, tls_v1:prf(PRFAlgo, Secret, Label, Seed, WantedLength)}.
 
 select_session(SuggestedSessionId, CipherSuites, HashSigns, Compressions, Port, #session{ecc = ECCCurve} = 
 		   Session, Version,
@@ -1227,68 +840,121 @@ select_session(SuggestedSessionId, CipherSuites, HashSigns, Compressions, Port,
 	    {resumed, Resumed}
     end.
 
-%% Deprecated?
 supported_ecc({Major, Minor}) when ((Major == 3) and (Minor >= 1)) orelse (Major > 3) ->
     Curves = tls_v1:ecc_curves(Minor),
     #elliptic_curves{elliptic_curve_list = Curves};
 supported_ecc(_) ->
     #elliptic_curves{elliptic_curve_list = []}.
 
-%%-------------certificate handling --------------------------------
-
-certificate_types(_, {N, M}) when N >= 3 andalso M >= 3 ->
-    case proplists:get_bool(ecdsa,  
-			    proplists:get_value(public_keys, crypto:supports())) of
-	true ->
-	    <<?BYTE(?ECDSA_SIGN), ?BYTE(?RSA_SIGN), ?BYTE(?DSS_SIGN)>>;
-	false ->
-	    <<?BYTE(?RSA_SIGN), ?BYTE(?DSS_SIGN)>>
+premaster_secret(OtherPublicDhKey, MyPrivateKey, #'DHParameter'{} = Params) ->
+    try 
+	public_key:compute_key(OtherPublicDhKey, MyPrivateKey, Params)  
+    catch 
+	error:computation_failed -> 
+	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER))
+    end;	   
+premaster_secret(PublicDhKey, PrivateDhKey, #server_dh_params{dh_p = Prime, dh_g = Base}) ->
+    try 
+	crypto:compute_key(dh, PublicDhKey, PrivateDhKey, [Prime, Base])
+    catch 
+	error:computation_failed -> 
+	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER))
     end;
+premaster_secret(#client_srp_public{srp_a = ClientPublicKey}, ServerKey, #srp_user{prime = Prime,
+										   verifier = Verifier}) ->
+    case crypto:compute_key(srp, ClientPublicKey, ServerKey, {host, [Verifier, Prime, '6a']}) of
+	error ->
+	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER));
+	PremasterSecret ->
+	    PremasterSecret
+    end;
+premaster_secret(#server_srp_params{srp_n = Prime, srp_g = Generator, srp_s = Salt, srp_b = Public},
+		 ClientKeys, {Username, Password}) ->
+    case ssl_srp_primes:check_srp_params(Generator, Prime) of
+	ok ->
+	    DerivedKey = crypto:hash(sha, [Salt, crypto:hash(sha, [Username, <<$:>>, Password])]),
+	    case crypto:compute_key(srp, Public, ClientKeys, {user, [DerivedKey, Prime, Generator, '6a']}) of
+		error ->
+		    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER));
+		PremasterSecret ->
+		    PremasterSecret
+	    end;
+	_ ->
+	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER))
+    end;
+premaster_secret(#client_rsa_psk_identity{
+		    identity = PSKIdentity,
+		    exchange_keys = #encrypted_premaster_secret{premaster_secret = EncPMS}
+		   }, #'RSAPrivateKey'{} = Key, PSKLookup) ->
+    PremasterSecret = premaster_secret(EncPMS, Key),
+    psk_secret(PSKIdentity, PSKLookup, PremasterSecret);
+premaster_secret(#server_dhe_psk_params{
+		    hint = IdentityHint,
+		    dh_params =  #server_dh_params{dh_y = PublicDhKey} = Params},
+		    PrivateDhKey,
+		    LookupFun) ->
+    PremasterSecret = premaster_secret(PublicDhKey, PrivateDhKey, Params),
+    psk_secret(IdentityHint, LookupFun, PremasterSecret);
+premaster_secret(#server_ecdhe_psk_params{
+		    hint = IdentityHint,
+                    dh_params = #server_ecdh_params{
+                                   public = ECServerPubKey}},
+		    PrivateEcDhKey,
+		    LookupFun) ->
+    PremasterSecret = premaster_secret(#'ECPoint'{point = ECServerPubKey}, PrivateEcDhKey),
+    psk_secret(IdentityHint, LookupFun, PremasterSecret);
+premaster_secret({rsa_psk, PSKIdentity}, PSKLookup, RSAPremasterSecret) ->
+    psk_secret(PSKIdentity, PSKLookup, RSAPremasterSecret);
+premaster_secret(#client_ecdhe_psk_identity{
+		    identity =  PSKIdentity,
+		    dh_public = PublicEcDhPoint}, PrivateEcDhKey, PSKLookup) ->
+    PremasterSecret = premaster_secret(#'ECPoint'{point = PublicEcDhPoint}, PrivateEcDhKey),
+    psk_secret(PSKIdentity, PSKLookup, PremasterSecret).
+premaster_secret(#client_dhe_psk_identity{
+		    identity =  PSKIdentity,
+		    dh_public = PublicDhKey}, PrivateKey, #'DHParameter'{} = Params, PSKLookup) ->
+    PremasterSecret = premaster_secret(PublicDhKey, PrivateKey, Params),
+    psk_secret(PSKIdentity, PSKLookup, PremasterSecret).
+premaster_secret(#client_psk_identity{identity = PSKIdentity}, PSKLookup) ->
+    psk_secret(PSKIdentity, PSKLookup);
+premaster_secret({psk, PSKIdentity}, PSKLookup) ->
+    psk_secret(PSKIdentity, PSKLookup);
+premaster_secret(#'ECPoint'{} = ECPoint, #'ECPrivateKey'{} = ECDHKeys) ->
+    public_key:compute_key(ECPoint, ECDHKeys);
+premaster_secret(EncSecret, #'RSAPrivateKey'{} = RSAPrivateKey) ->
+    try public_key:decrypt_private(EncSecret, RSAPrivateKey,
+				   [{rsa_pad, rsa_pkcs1_padding}])
+    catch
+	_:_ ->
+	    throw(?ALERT_REC(?FATAL, ?DECRYPT_ERROR))
+    end.
+%%====================================================================
+%% Extensions handling
+%%====================================================================
+client_hello_extensions(Version, CipherSuites, 
+			#ssl_options{signature_algs = SupportedHashSigns,
+				     eccs = SupportedECCs} = SslOpts, ConnectionStates, Renegotiation) ->
+    {EcPointFormats, EllipticCurves} =
+	case advertises_ec_ciphers(lists:map(fun ssl_cipher:suite_definition/1, CipherSuites)) of
+	    true ->
+		client_ecc_extensions(SupportedECCs);
+	    false ->
+		{undefined, undefined}
+	end,
+    SRP = srp_user(SslOpts),
 
-certificate_types({KeyExchange, _, _, _}, _) when KeyExchange == rsa;
-						  KeyExchange == dh_rsa;
-						  KeyExchange == dhe_rsa;
-						  KeyExchange == ecdhe_rsa ->
-    <<?BYTE(?RSA_SIGN)>>;
-
-certificate_types({KeyExchange, _, _, _}, _)  when KeyExchange == dh_dss; 
-						   KeyExchange == dhe_dss;
-						   KeyExchange == srp_dss ->
-    <<?BYTE(?DSS_SIGN)>>;
-
-certificate_types({KeyExchange, _, _, _}, _) when KeyExchange == dh_ecdsa;
-						  KeyExchange == dhe_ecdsa;
-						  KeyExchange == ecdh_ecdsa;
-						  KeyExchange == ecdhe_ecdsa ->
-    <<?BYTE(?ECDSA_SIGN)>>;
-
-certificate_types(_, _) ->
-    <<?BYTE(?RSA_SIGN)>>.
-
-certificate_authorities(CertDbHandle, CertDbRef) ->
-    Authorities = certificate_authorities_from_db(CertDbHandle, CertDbRef),
-    Enc = fun(#'OTPCertificate'{tbsCertificate=TBSCert}) ->
-		  OTPSubj = TBSCert#'OTPTBSCertificate'.subject,
-		  DNEncodedBin = public_key:pkix_encode('Name', OTPSubj, otp),
-		  DNEncodedLen = byte_size(DNEncodedBin),
-		  <<?UINT16(DNEncodedLen), DNEncodedBin/binary>>
-	  end,
-    list_to_binary([Enc(Cert) || {_, Cert} <- Authorities]).
-
-certificate_authorities_from_db(CertDbHandle, CertDbRef) when is_reference(CertDbRef) ->
-    ConnectionCerts = fun({{Ref, _, _}, Cert}, Acc) when Ref  == CertDbRef ->
-			      [Cert | Acc];
-			 (_, Acc) ->
-			      Acc
-		      end,
-    ssl_pkix_db:foldl(ConnectionCerts, [], CertDbHandle);
-certificate_authorities_from_db(_CertDbHandle, {extracted, CertDbData}) ->
-    %% Cache disabled, Ref contains data
-    lists:foldl(fun({decoded, {_Key,Cert}}, Acc) -> [Cert | Acc] end,
-		[], CertDbData).
-
-
-%%-------------Extension handling --------------------------------
+    #hello_extensions{
+       renegotiation_info = renegotiation_info(tls_record, client,
+					       ConnectionStates, Renegotiation),
+       srp = SRP,
+       signature_algs = available_signature_algs(SupportedHashSigns, Version),
+       ec_point_formats = EcPointFormats,
+       elliptic_curves = EllipticCurves,
+       alpn = encode_alpn(SslOpts#ssl_options.alpn_advertised_protocols, Renegotiation),
+       next_protocol_negotiation =
+	   encode_client_protocol_negotiation(SslOpts#ssl_options.next_protocol_selector,
+					      Renegotiation),
+       sni = sni(SslOpts#ssl_options.server_name_indication)}.
 
 handle_client_hello_extensions(RecordCB, Random, ClientCipherSuites,
 			       #hello_extensions{renegotiation_info = Info,
@@ -1365,231 +1031,207 @@ handle_server_hello_extensions(RecordCB, Random, CipherSuite, Compression,
             ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, too_many_protocols_in_server_hello)
     end.
 
-select_version(RecordCB, ClientVersion, Versions) ->
-    do_select_version(RecordCB, ClientVersion, Versions).
-
-do_select_version(_, ClientVersion, []) ->
-    ClientVersion;
-do_select_version(RecordCB, ClientVersion, [Version | Versions]) ->
-    case RecordCB:is_higher(Version, ClientVersion) of
-	true ->
-	    %% Version too high for client - keep looking
-	    do_select_version(RecordCB, ClientVersion, Versions);
-	false ->
-	    %% Version ok for client - look for a higher
-	    do_select_version(RecordCB, ClientVersion, Versions, Version)
-    end.
-%%
-do_select_version(_, _, [], GoodVersion) ->
-    GoodVersion;
-do_select_version(
-  RecordCB, ClientVersion, [Version | Versions], GoodVersion) ->
-    BetterVersion =
-	case RecordCB:is_higher(Version, ClientVersion) of
-	    true ->
-		%% Version too high for client
-		GoodVersion;
-	    false ->
-		%% Version ok for client
-		case RecordCB:is_higher(Version, GoodVersion) of
-		    true ->
-			%% Use higher version
-			Version;
-		    false ->
-			GoodVersion
-		end
-	end,
-    do_select_version(RecordCB, ClientVersion, Versions, BetterVersion).
+select_curve(Client, Server) ->
+    select_curve(Client, Server, false).
 
-renegotiation_info(_, client, _, false) ->
-    #renegotiation_info{renegotiated_connection = undefined};
-renegotiation_info(_RecordCB, server, ConnectionStates, false) ->
-    ConnectionState  = ssl_record:current_connection_state(ConnectionStates, read),
-    case maps:get(secure_renegotiation, ConnectionState) of
-	true ->
-	    #renegotiation_info{renegotiated_connection = ?byte(0)};
-	false ->
-	    #renegotiation_info{renegotiated_connection = undefined}
-    end;
-renegotiation_info(_RecordCB, client, ConnectionStates, true) ->
-    ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
-    case  maps:get(secure_renegotiation, ConnectionState) of
-	true ->
-	    Data = maps:get(client_verify_data, ConnectionState),
-	    #renegotiation_info{renegotiated_connection = Data};
-	false ->
-	    #renegotiation_info{renegotiated_connection = undefined}
+select_curve(#elliptic_curves{elliptic_curve_list = ClientCurves},
+	     #elliptic_curves{elliptic_curve_list = ServerCurves},
+	     ServerOrder) ->
+    case ServerOrder of
+        false ->
+            select_shared_curve(ClientCurves, ServerCurves);
+        true ->
+            select_shared_curve(ServerCurves, ClientCurves)
     end;
+select_curve(undefined, _, _) ->
+    %% Client did not send ECC extension use default curve if 
+    %% ECC cipher is negotiated
+    {namedCurve, ?secp256r1}.
 
-renegotiation_info(_RecordCB, server, ConnectionStates, true) ->
-    ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
-    case maps:get(secure_renegotiation, ConnectionState) of
-	true ->
-	    CData = maps:get(client_verify_data, ConnectionState),
-	    SData = maps:get(server_verify_data, ConnectionState),
-	    #renegotiation_info{renegotiated_connection = <<CData/binary, SData/binary>>};
-	false ->
-	    #renegotiation_info{renegotiated_connection = undefined}
-    end.
+%%--------------------------------------------------------------------
+-spec select_hashsign(#hash_sign_algos{} | undefined,  undefined | binary(), 
+		      atom(), [atom()], ssl_record:ssl_version()) ->
+			     {atom(), atom()} | undefined  | #alert{}.
 
-handle_renegotiation_info(_RecordCB, _, #renegotiation_info{renegotiated_connection = ?byte(0)},
-			  ConnectionStates, false, _, _) ->
-    {ok, ssl_record:set_renegotiation_flag(true, ConnectionStates)};
+%%
+%% Description: Handles signature_algorithms hello extension (server)
+%%--------------------------------------------------------------------
+select_hashsign(_, undefined, _,  _, _Version) ->
+    {null, anon};
+%% The signature_algorithms extension was introduced with TLS 1.2. Ignore it if we have
+%% negotiated a lower version.
+select_hashsign(HashSigns, Cert, KeyExAlgo, 
+		undefined, {Major, Minor} = Version)  when Major >= 3 andalso Minor >= 3->
+    select_hashsign(HashSigns, Cert, KeyExAlgo, tls_v1:default_signature_algs(Version), Version);
+select_hashsign(#hash_sign_algos{hash_sign_algos = HashSigns}, Cert, KeyExAlgo, SupportedHashSigns,
+		{Major, Minor}) when Major >= 3 andalso Minor >= 3 ->
+    #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
+    #'OTPCertificate'{tbsCertificate = TBSCert,
+		      signatureAlgorithm =  {_,SignAlgo, _}} = public_key:pkix_decode_cert(Cert, otp),
+    #'OTPSubjectPublicKeyInfo'{algorithm = {_, SubjAlgo, _}} = 
+     	TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
 
-handle_renegotiation_info(_RecordCB, server, undefined, ConnectionStates, _, _, CipherSuites) ->
-    case is_member(?TLS_EMPTY_RENEGOTIATION_INFO_SCSV, CipherSuites) of
-	true ->
-	    {ok, ssl_record:set_renegotiation_flag(true, ConnectionStates)};
-	false ->
-	    {ok, ssl_record:set_renegotiation_flag(false, ConnectionStates)}
+    Sign = sign_algo(SignAlgo),
+    SubSing = sign_algo(SubjAlgo),
+
+    case lists:filter(fun({_, S} = Algos) when S == Sign ->
+			      is_acceptable_hash_sign(Algos, Sign,
+						      SubSing, KeyExAlgo, SupportedHashSigns);
+			 (_)  ->
+			      false
+		      end, HashSigns) of
+	[] ->
+            ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_signature_algorithm);
+	[HashSign | _] ->
+	    HashSign
     end;
+select_hashsign(_, Cert, _, _, Version) ->
+    #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
+    #'OTPSubjectPublicKeyInfo'{algorithm = {_,Algo, _}} = TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
+    select_hashsign_algs(undefined, Algo, Version).
+%%--------------------------------------------------------------------
+-spec select_hashsign(#certificate_request{},  binary(), 
+		      [atom()], ssl_record:ssl_version()) ->
+			     {atom(), atom()} | #alert{}.
 
-handle_renegotiation_info(_RecordCB, _, undefined, ConnectionStates, false, _, _) ->
-    {ok, ssl_record:set_renegotiation_flag(false, ConnectionStates)};
+%%
+%% Description: Handles signature algorithms selection for certificate requests (client) 
+%%--------------------------------------------------------------------
+select_hashsign(#certificate_request{}, undefined, _, {Major, Minor})  when Major >= 3 andalso Minor >= 3->
+    %% There client does not have a certificate and will send an empty reply, the server may fail 
+    %% or accept the connection by its own preference. No signature algorihms needed as there is
+    %% no certificate to verify.
+    {undefined, undefined}; 
+ 
+select_hashsign(#certificate_request{hashsign_algorithms = #hash_sign_algos{hash_sign_algos = HashSigns}, 
+				     certificate_types = Types}, Cert, SupportedHashSigns, 
+		{Major, Minor})  when Major >= 3 andalso Minor >= 3->
+    #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
+    #'OTPCertificate'{tbsCertificate = TBSCert,
+		      signatureAlgorithm =  {_,SignAlgo, _}} = public_key:pkix_decode_cert(Cert, otp),
+    #'OTPSubjectPublicKeyInfo'{algorithm = {_, SubjAlgo, _}} = 
+     	TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
 
-handle_renegotiation_info(_RecordCB, client, #renegotiation_info{renegotiated_connection = ClientServerVerify},
-			  ConnectionStates, true, _, _) ->
-    ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
-    CData = maps:get(client_verify_data, ConnectionState),
-    SData = maps:get(server_verify_data, ConnectionState),
-    case <<CData/binary, SData/binary>> == ClientServerVerify of
+    Sign = sign_algo(SignAlgo),
+    SubSign = sign_algo(SubjAlgo),
+    
+    case is_acceptable_cert_type(SubSign, HashSigns, Types) andalso is_supported_sign(Sign, HashSigns) of
 	true ->
-	    {ok, ConnectionStates};
+	    case lists:filter(fun({_, S} = Algos) when S == SubSign ->
+				 is_acceptable_hash_sign(Algos, SupportedHashSigns);
+			    (_)  ->
+				      false
+			      end, HashSigns) of
+		[] ->
+		    ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_signature_algorithm);
+		[HashSign | _] ->
+		    HashSign
+	    end;
 	false ->
-            ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, client_renegotiation)
+	    ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_signature_algorithm)
     end;
-handle_renegotiation_info(_RecordCB, server, #renegotiation_info{renegotiated_connection = ClientVerify},
-			  ConnectionStates, true, _, CipherSuites) ->
-
-      case is_member(?TLS_EMPTY_RENEGOTIATION_INFO_SCSV, CipherSuites) of
-	  true ->
-              ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {server_renegotiation, empty_renegotiation_info_scsv});
-	  false ->
-	      ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
-	      Data =  maps:get(client_verify_data, ConnectionState),
-	      case Data == ClientVerify of
-		  true ->
-		      {ok, ConnectionStates};
-		  false ->
-                      ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, server_renegotiation)
-	      end
-      end;
-
-handle_renegotiation_info(RecordCB, client, undefined, ConnectionStates, true, SecureRenegotation, _) ->
-    handle_renegotiation_info(RecordCB, ConnectionStates, SecureRenegotation);
+select_hashsign(#certificate_request{}, Cert, _, Version) ->
+    select_hashsign(undefined, Cert, undefined, [], Version).
 
-handle_renegotiation_info(RecordCB, server, undefined, ConnectionStates, true, SecureRenegotation, CipherSuites) ->
-     case is_member(?TLS_EMPTY_RENEGOTIATION_INFO_SCSV, CipherSuites) of
-	  true ->
-             ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {server_renegotiation, empty_renegotiation_info_scsv});
-	 false ->
-	     handle_renegotiation_info(RecordCB, ConnectionStates, SecureRenegotation)
-     end.
+%%--------------------------------------------------------------------
+-spec select_hashsign_algs({atom(), atom()}| undefined, oid(), ssl_record:ssl_version()) ->
+				  {atom(), atom()}.
 
-handle_renegotiation_info(_RecordCB, ConnectionStates, SecureRenegotation) ->
-    ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
-    case {SecureRenegotation, maps:get(secure_renegotiation, ConnectionState)} of
-	{_, true} ->
-            ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, already_secure);
-	{true, false} ->
-	    ?ALERT_REC(?FATAL, ?NO_RENEGOTIATION);
-	{false, false} ->
-	    {ok, ConnectionStates}
-    end.
+%% Description: For TLS 1.2 hash function and signature algorithm pairs can be
+%% negotiated with the signature_algorithms extension,
+%% for previous versions always use appropriate defaults.
+%% RFC 5246, Sect. 7.4.1.4.1.  Signature Algorithms
+%% If the client does not send the signature_algorithms extension, the
+%% server MUST do the following: (e.i defaults for TLS 1.2)
+%%
+%% -  If the negotiated key exchange algorithm is one of (RSA, DHE_RSA,
+%%    DH_RSA, RSA_PSK, ECDH_RSA, ECDHE_RSA), behave as if client had
+%%    sent the value {sha1,rsa}.
+%%
+%% -  If the negotiated key exchange algorithm is one of (DHE_DSS,
+%%    DH_DSS), behave as if the client had sent the value {sha1,dsa}.
+%%
+%% -  If the negotiated key exchange algorithm is one of (ECDH_ECDSA,
+%%    ECDHE_ECDSA), behave as if the client had sent value {sha1,ecdsa}.
 
-hello_extensions_list(#hello_extensions{renegotiation_info = RenegotiationInfo,
-					srp = SRP,
-					signature_algs = HashSigns,
-					ec_point_formats = EcPointFormats,
-					elliptic_curves = EllipticCurves,
-                                        alpn = ALPN,
-					next_protocol_negotiation = NextProtocolNegotiation,
-					sni = Sni}) ->
-    [Ext || Ext <- [RenegotiationInfo, SRP, HashSigns,
-		    EcPointFormats, EllipticCurves, ALPN, NextProtocolNegotiation, Sni], Ext =/= undefined].
+%%--------------------------------------------------------------------
+select_hashsign_algs(HashSign, _, {Major, Minor}) when HashSign =/= undefined andalso
+						       Major >= 3 andalso Minor >= 3 ->
+    HashSign;
+select_hashsign_algs(undefined, ?rsaEncryption, {Major, Minor}) when Major >= 3 andalso Minor >= 3 ->
+    {sha, rsa};
+select_hashsign_algs(undefined,?'id-ecPublicKey', _) ->
+    {sha, ecdsa};
+select_hashsign_algs(undefined, ?rsaEncryption, _) -> 
+    {md5sha, rsa};
+select_hashsign_algs(undefined, ?'id-dsa', _) ->
+    {sha, dsa}.
 
 srp_user(#ssl_options{srp_identity = {UserName, _}}) ->
     #srp{username = UserName};
 srp_user(_) ->
     undefined.
 
-client_ecc_extensions(SupportedECCs) ->
-    CryptoSupport = proplists:get_value(public_keys, crypto:supports()),
-    case proplists:get_bool(ecdh, CryptoSupport) of
-	true ->
-	    EcPointFormats = #ec_point_formats{ec_point_format_list = [?ECPOINT_UNCOMPRESSED]},
-	    EllipticCurves = SupportedECCs,
-	    {EcPointFormats, EllipticCurves};
-	_ ->
-	    {undefined, undefined}
-    end.
+%%--------------------------------------------------------------------
+%%% Internal functions
+%%--------------------------------------------------------------------
+%%------------- Create handshake messages ----------------------------
 
-server_ecc_extension(_Version, EcPointFormats) ->
-    CryptoSupport = proplists:get_value(public_keys, crypto:supports()),
-    case proplists:get_bool(ecdh, CryptoSupport) of
+int_to_bin(I) ->
+    L = (length(integer_to_list(I, 16)) + 1) div 2,
+    <<I:(L*8)>>.
+
+certificate_types(_, {N, M}) when N >= 3 andalso M >= 3 ->
+    case proplists:get_bool(ecdsa,  
+			    proplists:get_value(public_keys, crypto:supports())) of
 	true ->
-	    handle_ecc_point_fmt_extension(EcPointFormats);
+	    <<?BYTE(?ECDSA_SIGN), ?BYTE(?RSA_SIGN), ?BYTE(?DSS_SIGN)>>;
 	false ->
-	    undefined
-    end.
-
-handle_ecc_point_fmt_extension(undefined) ->
-    undefined;
-handle_ecc_point_fmt_extension(_) ->
-    #ec_point_formats{ec_point_format_list = [?ECPOINT_UNCOMPRESSED]}.
+	    <<?BYTE(?RSA_SIGN), ?BYTE(?DSS_SIGN)>>
+    end;
 
-advertises_ec_ciphers([]) ->
-    false;
-advertises_ec_ciphers([{ecdh_ecdsa, _,_,_} | _]) ->
-    true;
-advertises_ec_ciphers([{ecdhe_ecdsa, _,_,_} | _]) ->
-    true;
-advertises_ec_ciphers([{ecdh_rsa, _,_,_} | _]) ->
-    true;
-advertises_ec_ciphers([{ecdhe_rsa, _,_,_} | _]) ->
-    true;
-advertises_ec_ciphers([{ecdh_anon, _,_,_} | _]) ->
-    true;
-advertises_ec_ciphers([{ecdhe_psk, _,_,_} | _]) ->
-    true;
-advertises_ec_ciphers([_| Rest]) ->
-    advertises_ec_ciphers(Rest).
+certificate_types(#{key_exchange := KeyExchange}, _) when KeyExchange == rsa;
+                                                          KeyExchange == dh_rsa;
+                                                          KeyExchange == dhe_rsa;
+                                                          KeyExchange == ecdhe_rsa ->
+    <<?BYTE(?RSA_SIGN)>>;
 
-select_curve(Client, Server) ->
-    select_curve(Client, Server, false).
+certificate_types(#{key_exchange := KeyExchange}, _)  when KeyExchange == dh_dss; 
+                                                           KeyExchange == dhe_dss;
+                                                           KeyExchange == srp_dss ->
+    <<?BYTE(?DSS_SIGN)>>;
 
-select_curve(#elliptic_curves{elliptic_curve_list = ClientCurves},
-	     #elliptic_curves{elliptic_curve_list = ServerCurves},
-	     ServerOrder) ->
-    case ServerOrder of
-        false ->
-            select_shared_curve(ClientCurves, ServerCurves);
-        true ->
-            select_shared_curve(ServerCurves, ClientCurves)
-    end;
-select_curve(undefined, _, _) ->
-    %% Client did not send ECC extension use default curve if 
-    %% ECC cipher is negotiated
-    {namedCurve, ?secp256r1}.
+certificate_types(#{key_exchange := KeyExchange}, _) when KeyExchange == dh_ecdsa;
+                                                          KeyExchange == dhe_ecdsa;
+                                                          KeyExchange == ecdh_ecdsa;
+                                                          KeyExchange == ecdhe_ecdsa ->
+    <<?BYTE(?ECDSA_SIGN)>>;
+certificate_types(_, _) ->
+    <<?BYTE(?RSA_SIGN)>>.
 
-select_shared_curve([], _) ->
-    no_curve;
-select_shared_curve([Curve | Rest], Curves) ->
-    case lists:member(Curve, Curves) of
-	true ->
-	    {namedCurve, Curve};
-	false ->
-	    select_shared_curve(Rest, Curves)
-    end.
+certificate_authorities(CertDbHandle, CertDbRef) ->
+    Authorities = certificate_authorities_from_db(CertDbHandle, CertDbRef),
+    Enc = fun(#'OTPCertificate'{tbsCertificate=TBSCert}) ->
+		  OTPSubj = TBSCert#'OTPTBSCertificate'.subject,
+		  DNEncodedBin = public_key:pkix_encode('Name', OTPSubj, otp),
+		  DNEncodedLen = byte_size(DNEncodedBin),
+		  <<?UINT16(DNEncodedLen), DNEncodedBin/binary>>
+	  end,
+    list_to_binary([Enc(Cert) || {_, Cert} <- Authorities]).
 
-sni(undefined) ->
-    undefined;
-sni(Hostname) ->
-    #sni{hostname = Hostname}.
+certificate_authorities_from_db(CertDbHandle, CertDbRef) when is_reference(CertDbRef) ->
+    ConnectionCerts = fun({{Ref, _, _}, Cert}, Acc) when Ref  == CertDbRef ->
+			      [Cert | Acc];
+			 (_, Acc) ->
+			      Acc
+		      end,
+    ssl_pkix_db:foldl(ConnectionCerts, [], CertDbHandle);
+certificate_authorities_from_db(_CertDbHandle, {extracted, CertDbData}) ->
+    %% Cache disabled, Ref contains data
+    lists:foldl(fun({decoded, {_Key,Cert}}, Acc) -> [Cert | Acc] end,
+		[], CertDbData).
 
-%%--------------------------------------------------------------------
-%%% Internal functions
-%%--------------------------------------------------------------------
+%%-------------Handle handshake messages --------------------------------
 validation_fun_and_state({Fun, UserState0}, Role,  CertDbHandle, CertDbRef, 
                          ServerNameIndication, CRLCheck, CRLDbHandle, CertPath) ->
     {fun(OtpCert, {extension, _} = Extension, {SslState, UserState}) ->
@@ -1681,17 +1323,6 @@ path_validation_alert({bad_cert, unknown_ca}) ->
 path_validation_alert(Reason) ->
     ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, Reason).
 
-encrypted_premaster_secret(Secret, RSAPublicKey) ->
-    try
-	PreMasterSecret = public_key:encrypt_public(Secret, RSAPublicKey,
-						    [{rsa_pad,
-						      rsa_pkcs1_padding}]),
-	#encrypted_premaster_secret{premaster_secret = PreMasterSecret}
-    catch
-        _:_->
-            throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, premaster_encryption_failed))
-    end.
-
 digitally_signed(Version, Hashes, HashAlgo, PrivateKey) ->
     try do_digitally_signed(Version, Hashes, HashAlgo, PrivateKey) of
 	Signature ->
@@ -1700,17 +1331,123 @@ digitally_signed(Version, Hashes, HashAlgo, PrivateKey) ->
 	error:badkey->
 	    throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, bad_key(PrivateKey)))
     end.
-
+do_digitally_signed({3, Minor}, Hash, HashAlgo, #{algorithm := Alg} = Engine) 
+  when Minor >= 3 ->
+    crypto:sign(Alg, HashAlgo, {digest, Hash}, maps:remove(algorithm, Engine));
 do_digitally_signed({3, Minor}, Hash, HashAlgo, Key) when Minor >= 3 ->
     public_key:sign({digest, Hash}, HashAlgo, Key);
-do_digitally_signed(_Version, Hash, HashAlgo, #'DSAPrivateKey'{} = Key) ->
-    public_key:sign({digest, Hash}, HashAlgo, Key);
 do_digitally_signed(_Version, Hash, _HashAlgo, #'RSAPrivateKey'{} = Key) ->
     public_key:encrypt_private(Hash, Key,
 			       [{rsa_pad, rsa_pkcs1_padding}]);
+do_digitally_signed({3, _}, Hash, _, 
+                    #{algorithm := rsa} = Engine) ->
+    crypto:private_encrypt(rsa, Hash, maps:remove(algorithm, Engine),
+                           rsa_pkcs1_padding);
+do_digitally_signed({3, _}, Hash, HashAlgo, #{algorithm := Alg} = Engine) ->
+    crypto:sign(Alg, HashAlgo, {digest, Hash}, maps:remove(algorithm, Engine));
 do_digitally_signed(_Version, Hash, HashAlgo, Key) ->
     public_key:sign({digest, Hash}, HashAlgo, Key).
 
+bad_key(#'DSAPrivateKey'{}) ->
+    unacceptable_dsa_key;
+bad_key(#'RSAPrivateKey'{}) ->
+    unacceptable_rsa_key;
+bad_key(#'ECPrivateKey'{}) ->
+    unacceptable_ecdsa_key.
+
+crl_check(_, false, _,_,_, _, _) ->
+    valid;
+crl_check(_, peer, _, _,_, valid, _) -> %% Do not check CAs with this option.
+    valid;
+crl_check(OtpCert, Check, CertDbHandle, CertDbRef, {Callback, CRLDbHandle}, _, CertPath) ->
+    Options = [{issuer_fun, {fun(_DP, CRL, Issuer, DBInfo) ->
+				     ssl_crl:trusted_cert_and_path(CRL, Issuer, {CertPath,
+                                                                                 DBInfo})
+			     end, {CertDbHandle, CertDbRef}}}, 
+	       {update_crl, fun(DP, CRL) -> Callback:fresh_crl(DP, CRL) end},
+               {undetermined_details, true}
+	      ],
+    case dps_and_crls(OtpCert, Callback, CRLDbHandle, ext) of
+	no_dps ->
+	    crl_check_same_issuer(OtpCert, Check,
+				  dps_and_crls(OtpCert, Callback, CRLDbHandle, same_issuer),
+				  Options);
+	DpsAndCRLs ->  %% This DP list may be empty if relevant CRLs existed 
+	    %% but could not be retrived, will result in {bad_cert, revocation_status_undetermined}
+	    case public_key:pkix_crls_validate(OtpCert, DpsAndCRLs, Options) of
+		{bad_cert, {revocation_status_undetermined, _}} ->
+		    crl_check_same_issuer(OtpCert, Check, dps_and_crls(OtpCert, Callback, 
+								       CRLDbHandle, same_issuer), Options);
+		Other ->
+		    Other
+	    end
+    end.
+
+crl_check_same_issuer(OtpCert, best_effort, Dps, Options) ->		
+    case public_key:pkix_crls_validate(OtpCert, Dps, Options) of 
+	{bad_cert, {revocation_status_undetermined, _}}   ->
+	    valid;
+	Other ->
+	    Other
+    end;
+crl_check_same_issuer(OtpCert, _, Dps, Options) ->    
+    public_key:pkix_crls_validate(OtpCert, Dps, Options).
+
+dps_and_crls(OtpCert, Callback, CRLDbHandle, ext) ->
+    case public_key:pkix_dist_points(OtpCert) of
+	[] ->
+	    no_dps;
+	DistPoints ->
+	    Issuer = OtpCert#'OTPCertificate'.tbsCertificate#'OTPTBSCertificate'.issuer,
+	    CRLs = distpoints_lookup(DistPoints, Issuer, Callback, CRLDbHandle),
+            dps_and_crls(DistPoints, CRLs, [])
+    end;
+
+dps_and_crls(OtpCert, Callback, CRLDbHandle, same_issuer) ->    
+    DP = #'DistributionPoint'{distributionPoint = {fullName, GenNames}} = 
+	public_key:pkix_dist_point(OtpCert),
+    CRLs = lists:flatmap(fun({directoryName, Issuer}) -> 
+				 Callback:select(Issuer, CRLDbHandle);
+			    (_) ->
+				 []
+			 end, GenNames),
+    [{DP, {CRL, public_key:der_decode('CertificateList', CRL)}} ||  CRL <- CRLs].
+
+dps_and_crls([], _, Acc) ->
+    Acc;
+dps_and_crls([DP | Rest], CRLs, Acc) ->
+    DpCRL = [{DP, {CRL, public_key:der_decode('CertificateList', CRL)}} ||  CRL <- CRLs],
+    dps_and_crls(Rest, CRLs, DpCRL ++ Acc).
+    
+distpoints_lookup([],_, _, _) ->
+    [];
+distpoints_lookup([DistPoint | Rest], Issuer, Callback, CRLDbHandle) ->
+    Result =
+	try Callback:lookup(DistPoint, Issuer, CRLDbHandle)
+	catch
+	    error:undef ->
+		%% The callback module still uses the 2-argument
+		%% version of the lookup function.
+		Callback:lookup(DistPoint, CRLDbHandle)
+	end,
+    case Result of
+	not_available ->
+	    distpoints_lookup(Rest, Issuer, Callback, CRLDbHandle);
+	CRLs ->
+	    CRLs
+    end.
+
+encrypted_premaster_secret(Secret, RSAPublicKey) ->
+    try
+	PreMasterSecret = public_key:encrypt_public(Secret, RSAPublicKey,
+						    [{rsa_pad,
+						      rsa_pkcs1_padding}]),
+	#encrypted_premaster_secret{premaster_secret = PreMasterSecret}
+    catch
+        _:_->
+            throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, premaster_encryption_failed))
+    end.
+
 calc_certificate_verify({3, 0}, HashAlgo, MasterSecret, Handshake) ->
     ssl_v3:certificate_verify(HashAlgo, MasterSecret, lists:reverse(Handshake));
 calc_certificate_verify({3, N}, HashAlgo, _MasterSecret, Handshake) ->
@@ -1763,24 +1500,7 @@ calc_master_secret({3,0}, _PrfAlgo, PremasterSecret, ClientRandom, ServerRandom)
 
 calc_master_secret({3,_}, PrfAlgo, PremasterSecret, ClientRandom, ServerRandom) ->
     tls_v1:master_secret(PrfAlgo, PremasterSecret, ClientRandom, ServerRandom).
-
-handle_renegotiation_extension(Role, RecordCB, Version, Info, Random, NegotiatedCipherSuite, 
-			       ClientCipherSuites, Compression,
-			       ConnectionStates0, Renegotiation, SecureRenegotation) ->
-    case handle_renegotiation_info(RecordCB, Role, Info, ConnectionStates0,
-				   Renegotiation, SecureRenegotation,
-				   ClientCipherSuites) of
-	{ok, ConnectionStates} ->
-	    hello_pending_connection_states(RecordCB, Role,
-					    Version,
-					    NegotiatedCipherSuite,
-					    Random,
-					    Compression,
-					    ConnectionStates);
-	#alert{} = Alert ->
-	    throw(Alert)
-    end.
-
+	
 %% Update pending connection states with parameters exchanged via
 %% hello messages
 %% NOTE : Role is the role of the receiver of the hello message
@@ -1820,7 +1540,43 @@ hello_security_parameters(server, Version, #{security_parameters := SecParams},
       compression_algorithm = Compression
      }.
 
-%%-------------Encode/Decode --------------------------------
+select_compression(_CompressionMetodes) ->
+    ?NULL.
+
+do_select_version(_, ClientVersion, []) ->
+    ClientVersion;
+do_select_version(RecordCB, ClientVersion, [Version | Versions]) ->
+    case RecordCB:is_higher(Version, ClientVersion) of
+	true ->
+	    %% Version too high for client - keep looking
+	    do_select_version(RecordCB, ClientVersion, Versions);
+	false ->
+	    %% Version ok for client - look for a higher
+	    do_select_version(RecordCB, ClientVersion, Versions, Version)
+    end.
+%%
+do_select_version(_, _, [], GoodVersion) ->
+    GoodVersion;
+do_select_version(
+  RecordCB, ClientVersion, [Version | Versions], GoodVersion) ->
+    BetterVersion =
+	case RecordCB:is_higher(Version, ClientVersion) of
+	    true ->
+		%% Version too high for client
+		GoodVersion;
+	    false ->
+		%% Version ok for client
+		case RecordCB:is_higher(Version, GoodVersion) of
+		    true ->
+			%% Use higher version
+			Version;
+		    false ->
+			GoodVersion
+		end
+	end,
+    do_select_version(RecordCB, ClientVersion, Versions, BetterVersion).
+
+%%-------------Encode handshakes --------------------------------
 
 encode_server_key(#server_dh_params{dh_p = P, dh_g = G, dh_y = Y}) ->
     PLen = byte_size(P),
@@ -1926,6 +1682,126 @@ encode_protocol(Protocol, Acc) ->
 	Len = byte_size(Protocol),
 	<<Acc/binary, ?BYTE(Len), Protocol/binary>>.
 
+enc_server_key_exchange(Version, Params, {HashAlgo, SignAlgo},
+			ClientRandom, ServerRandom, PrivateKey) ->
+    EncParams = encode_server_key(Params),
+    case HashAlgo of
+	null ->
+	    #server_key_params{params = Params,
+			       params_bin = EncParams,
+			       hashsign = {null, anon},
+			       signature = <<>>};
+	_ ->
+	    Hash =
+		server_key_exchange_hash(HashAlgo, <<ClientRandom/binary,
+						     ServerRandom/binary,
+						     EncParams/binary>>),
+	    Signature = digitally_signed(Version, Hash, HashAlgo, PrivateKey),
+	    #server_key_params{params = Params,
+			       params_bin = EncParams,
+			       hashsign = {HashAlgo, SignAlgo},
+			       signature = Signature}
+    end.
+
+%% While the RFC opens the door to allow ALPN during renegotiation, in practice
+%% this does not work and it is recommended to ignore any ALPN extension during
+%% renegotiation, as done here.
+encode_alpn(_, true) ->
+    undefined;
+encode_alpn(undefined, _) ->
+    undefined;
+encode_alpn(Protocols, _) ->
+    #alpn{extension_data = lists:foldl(fun encode_protocol/2, <<>>, Protocols)}.
+
+hello_extensions_list(#hello_extensions{renegotiation_info = RenegotiationInfo,
+					srp = SRP,
+					signature_algs = HashSigns,
+					ec_point_formats = EcPointFormats,
+					elliptic_curves = EllipticCurves,
+                                        alpn = ALPN,
+					next_protocol_negotiation = NextProtocolNegotiation,
+					sni = Sni}) ->
+    [Ext || Ext <- [RenegotiationInfo, SRP, HashSigns,
+		    EcPointFormats, EllipticCurves, ALPN, NextProtocolNegotiation, Sni], Ext =/= undefined].
+
+%%-------------Decode handshakes---------------------------------
+dec_server_key(<<?UINT16(PLen), P:PLen/binary,
+		 ?UINT16(GLen), G:GLen/binary,
+		 ?UINT16(YLen), Y:YLen/binary, _/binary>> = KeyStruct,
+	       ?KEY_EXCHANGE_DIFFIE_HELLMAN, Version) ->
+    Params = #server_dh_params{dh_p = P, dh_g = G, dh_y = Y},
+    {BinMsg, HashSign, Signature} = dec_server_key_params(PLen + GLen + YLen + 6, KeyStruct, Version),
+    #server_key_params{params = Params,
+		       params_bin = BinMsg,
+		       hashsign = HashSign,
+		       signature = Signature};
+%% ECParameters with named_curve
+%% TODO: explicit curve
+dec_server_key(<<?BYTE(?NAMED_CURVE), ?UINT16(CurveID),
+		 ?BYTE(PointLen), ECPoint:PointLen/binary,
+		 _/binary>> = KeyStruct,
+	       ?KEY_EXCHANGE_EC_DIFFIE_HELLMAN, Version) ->
+    Params = #server_ecdh_params{curve = {namedCurve, tls_v1:enum_to_oid(CurveID)},
+				 public = ECPoint},
+    {BinMsg, HashSign, Signature} = dec_server_key_params(PointLen + 4, KeyStruct, Version),
+    #server_key_params{params = Params,
+		       params_bin = BinMsg,
+		       hashsign = HashSign,
+		       signature = Signature};
+dec_server_key(<<?UINT16(Len), PskIdentityHint:Len/binary, _/binary>> = KeyStruct,
+	       KeyExchange, Version)
+  when KeyExchange == ?KEY_EXCHANGE_PSK; KeyExchange == ?KEY_EXCHANGE_RSA_PSK ->
+    Params = #server_psk_params{
+		hint = PskIdentityHint},
+    {BinMsg, HashSign, Signature} = dec_server_key_params(Len + 2, KeyStruct, Version),
+    #server_key_params{params = Params,
+		       params_bin = BinMsg,
+		       hashsign = HashSign,
+		       signature = Signature};
+dec_server_key(<<?UINT16(Len), IdentityHint:Len/binary,
+		 ?UINT16(PLen), P:PLen/binary,
+		 ?UINT16(GLen), G:GLen/binary,
+		 ?UINT16(YLen), Y:YLen/binary, _/binary>> = KeyStruct,
+	       ?KEY_EXCHANGE_DHE_PSK, Version) ->
+    DHParams = #server_dh_params{dh_p = P, dh_g = G, dh_y = Y},
+    Params = #server_dhe_psk_params{
+      hint = IdentityHint,
+      dh_params = DHParams},
+    {BinMsg, HashSign, Signature} = dec_server_key_params(Len + PLen + GLen + YLen + 8, KeyStruct, Version),
+    #server_key_params{params = Params,
+		       params_bin = BinMsg,
+		       hashsign = HashSign,
+		       signature = Signature};
+dec_server_key(<<?UINT16(Len), IdentityHint:Len/binary,
+		 ?BYTE(?NAMED_CURVE), ?UINT16(CurveID),
+		 ?BYTE(PointLen), ECPoint:PointLen/binary,
+		 _/binary>> = KeyStruct,
+	       ?KEY_EXCHANGE_EC_DIFFIE_HELLMAN_PSK, Version) ->
+    DHParams = #server_ecdh_params{
+                  curve = {namedCurve, tls_v1:enum_to_oid(CurveID)},
+                  public = ECPoint},
+    Params = #server_ecdhe_psk_params{
+                hint = IdentityHint,
+                dh_params = DHParams},
+    {BinMsg, HashSign, Signature} = dec_server_key_params(Len + 2 + PointLen + 4, KeyStruct, Version),
+    #server_key_params{params = Params,
+		       params_bin = BinMsg,
+		       hashsign = HashSign,
+		       signature = Signature};
+dec_server_key(<<?UINT16(NLen), N:NLen/binary,
+		 ?UINT16(GLen), G:GLen/binary,
+		 ?BYTE(SLen), S:SLen/binary,
+		 ?UINT16(BLen), B:BLen/binary, _/binary>> = KeyStruct,
+	       ?KEY_EXCHANGE_SRP, Version) ->
+    Params = #server_srp_params{srp_n = N, srp_g = G, srp_s = S, srp_b = B},
+    {BinMsg, HashSign, Signature} = dec_server_key_params(NLen + GLen + SLen + BLen + 7, KeyStruct, Version),
+    #server_key_params{params = Params,
+		       params_bin = BinMsg,
+		       hashsign = HashSign,
+		       signature = Signature};
+dec_server_key(_, KeyExchange, _) ->
+    throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {unknown_or_malformed_key_exchange, KeyExchange})).
+
 dec_client_key(PKEPMS, ?KEY_EXCHANGE_RSA, {3, 0}) ->
     #encrypted_premaster_secret{premaster_secret = PKEPMS};
 dec_client_key(<<?UINT16(_), PKEPMS/binary>>, ?KEY_EXCHANGE_RSA, _) ->
@@ -2071,6 +1947,11 @@ dec_sni(<<?BYTE(?SNI_NAMETYPE_HOST_NAME), ?UINT16(Len),
 dec_sni(<<?BYTE(_), ?UINT16(Len), _:Len, Rest/binary>>) -> dec_sni(Rest);
 dec_sni(_) -> undefined.
 
+decode_alpn(undefined) ->
+    undefined;
+decode_alpn(#alpn{extension_data=Data}) ->
+    decode_protocols(Data, []).
+
 decode_next_protocols({next_protocol_negotiation, Protocols}) ->
     decode_protocols(Protocols, []).
 
@@ -2115,6 +1996,7 @@ from_2bytes(<<>>, Acc) ->
     lists:reverse(Acc);
 from_2bytes(<<?UINT16(N), Rest/binary>>, Acc) ->
     from_2bytes(Rest, [?uint16(N) | Acc]).
+
 key_exchange_alg(rsa) ->
     ?KEY_EXCHANGE_RSA;
 key_exchange_alg(Alg) when Alg == dhe_rsa; Alg == dhe_dss;
@@ -2138,8 +2020,123 @@ key_exchange_alg(Alg)
 key_exchange_alg(_) ->
     ?NULL.
 
+%%-------------Cipher suite handling -----------------------------
+select_cipher_suite(CipherSuites, Suites, false) ->
+    select_cipher_suite(CipherSuites, Suites);
+select_cipher_suite(CipherSuites, Suites, true) ->
+    select_cipher_suite(Suites, CipherSuites).
+
+select_cipher_suite([], _) ->
+   no_suite;
+select_cipher_suite([Suite | ClientSuites], SupportedSuites) ->
+    case is_member(Suite, SupportedSuites) of
+	true ->
+	    Suite;
+        false ->
+	    select_cipher_suite(ClientSuites, SupportedSuites)
+    end.
+
+is_member(Suite, SupportedSuites) ->
+    lists:member(Suite, SupportedSuites).
+
+psk_secret(PSKIdentity, PSKLookup) ->
+    case handle_psk_identity(PSKIdentity, PSKLookup) of
+	{ok, PSK} when is_binary(PSK) ->
+	    Len = erlang:byte_size(PSK),
+	    <<?UINT16(Len), 0:(Len*8), ?UINT16(Len), PSK/binary>>;
+	#alert{} = Alert ->
+	    Alert;
+	_ ->
+	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER))
+    end.
+
+psk_secret(PSKIdentity, PSKLookup, PremasterSecret) ->
+    case handle_psk_identity(PSKIdentity, PSKLookup) of
+	{ok, PSK} when is_binary(PSK) ->
+	    Len = erlang:byte_size(PremasterSecret),
+	    PSKLen = erlang:byte_size(PSK),
+	    <<?UINT16(Len), PremasterSecret/binary, ?UINT16(PSKLen), PSK/binary>>;
+	#alert{} = Alert ->
+	    Alert;
+	_ ->
+	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER))
+    end.
+
+handle_psk_identity(_PSKIdentity, LookupFun)
+  when LookupFun == undefined ->
+    error;
+handle_psk_identity(PSKIdentity, {Fun, UserState}) ->
+    Fun(psk, PSKIdentity, UserState).
+
+filter_hashsigns([], [], _, Acc) ->
+    lists:reverse(Acc);
+filter_hashsigns([Suite | Suites], [#{key_exchange := KeyExchange} | Algos], HashSigns,
+		 Acc) when KeyExchange == dhe_ecdsa;
+			   KeyExchange == ecdhe_ecdsa ->
+    do_filter_hashsigns(ecdsa, Suite, Suites, Algos, HashSigns, Acc);
+
+filter_hashsigns([Suite | Suites], [#{key_exchange := KeyExchange} | Algos], HashSigns,
+		 Acc) when KeyExchange == rsa;
+			   KeyExchange == dhe_rsa;
+			   KeyExchange == ecdhe_rsa;
+			   KeyExchange == srp_rsa;
+			   KeyExchange == rsa_psk ->
+    do_filter_hashsigns(rsa, Suite, Suites, Algos, HashSigns, Acc);
+filter_hashsigns([Suite | Suites], [#{key_exchange := KeyExchange} | Algos], HashSigns, Acc) when 
+      KeyExchange == dhe_dss;
+      KeyExchange == srp_dss ->							       
+    do_filter_hashsigns(dsa, Suite, Suites, Algos, HashSigns, Acc);
+filter_hashsigns([Suite | Suites], [#{key_exchange := KeyExchange} | Algos], HashSigns, Acc) when 
+      KeyExchange == dh_dss; 
+      KeyExchange == dh_rsa; 
+      KeyExchange == dh_ecdsa;
+      KeyExchange == ecdh_rsa;    
+      KeyExchange == ecdh_ecdsa ->
+      %%  Fixed DH certificates MAY be signed with any hash/signature
+      %%  algorithm pair appearing in the hash_sign extension.  The names
+    %%  DH_DSS, DH_RSA, ECDH_ECDSA, and ECDH_RSA are historical.
+    filter_hashsigns(Suites, Algos, HashSigns, [Suite| Acc]);
+filter_hashsigns([Suite | Suites], [#{key_exchange := KeyExchange} | Algos], HashSigns, Acc) when 
+      KeyExchange == dh_anon;
+      KeyExchange == ecdh_anon;
+      KeyExchange == srp_anon;
+      KeyExchange == psk;
+      KeyExchange == dhe_psk;
+      KeyExchange == ecdhe_psk ->
+    %% In this case hashsigns is not used as the kexchange is anonaymous
+    filter_hashsigns(Suites, Algos, HashSigns, [Suite| Acc]).
+
+do_filter_hashsigns(SignAlgo, Suite, Suites, Algos, HashSigns, Acc) ->
+    case lists:keymember(SignAlgo, 2, HashSigns) of
+	true ->
+	    filter_hashsigns(Suites, Algos, HashSigns, [Suite| Acc]);
+	false ->
+	    filter_hashsigns(Suites, Algos, HashSigns, Acc)
+    end.
+
+unavailable_ecc_suites(no_curve) ->
+    ssl_cipher:ec_keyed_suites();
+unavailable_ecc_suites(_) ->
+    [].
 %%-------------Extension handling --------------------------------
 
+handle_renegotiation_extension(Role, RecordCB, Version, Info, Random, NegotiatedCipherSuite, 
+			       ClientCipherSuites, Compression,
+			       ConnectionStates0, Renegotiation, SecureRenegotation) ->
+    case handle_renegotiation_info(RecordCB, Role, Info, ConnectionStates0,
+				   Renegotiation, SecureRenegotation,
+				   ClientCipherSuites) of
+	{ok, ConnectionStates} ->
+	    hello_pending_connection_states(RecordCB, Role,
+					    Version,
+					    NegotiatedCipherSuite,
+					    Random,
+					    Compression,
+					    ConnectionStates);
+	#alert{} = Alert ->
+	    throw(Alert)
+    end.
+
 %% Receive protocols, choose one from the list, return it.
 handle_alpn_extension(_, {error, Reason}) ->
     ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, Reason);
@@ -2202,150 +2199,6 @@ handle_srp_extension(undefined, Session) ->
 handle_srp_extension(#srp{username = Username}, Session) ->
     Session#session{srp_username = Username}.
 
-%%-------------Misc --------------------------------
-
-select_cipher_suite(CipherSuites, Suites, false) ->
-    select_cipher_suite(CipherSuites, Suites);
-select_cipher_suite(CipherSuites, Suites, true) ->
-    select_cipher_suite(Suites, CipherSuites).
-
-select_cipher_suite([], _) ->
-   no_suite;
-select_cipher_suite([Suite | ClientSuites], SupportedSuites) ->
-    case is_member(Suite, SupportedSuites) of
-	true ->
-	    Suite;
-        false ->
-	    select_cipher_suite(ClientSuites, SupportedSuites)
-    end.
-
-int_to_bin(I) ->
-    L = (length(integer_to_list(I, 16)) + 1) div 2,
-    <<I:(L*8)>>.
-
-is_member(Suite, SupportedSuites) ->
-    lists:member(Suite, SupportedSuites).
-
-select_compression(_CompressionMetodes) ->
-    ?NULL.
-
-available_signature_algs(undefined, _)  ->
-    undefined;
-available_signature_algs(SupportedHashSigns, Version) when Version >= {3, 3} ->
-    #hash_sign_algos{hash_sign_algos = SupportedHashSigns};
-available_signature_algs(_, _) ->
-    undefined.
-
-psk_secret(PSKIdentity, PSKLookup) ->
-    case handle_psk_identity(PSKIdentity, PSKLookup) of
-	{ok, PSK} when is_binary(PSK) ->
-	    Len = erlang:byte_size(PSK),
-	    <<?UINT16(Len), 0:(Len*8), ?UINT16(Len), PSK/binary>>;
-	#alert{} = Alert ->
-	    Alert;
-	_ ->
-	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER))
-    end.
-
-psk_secret(PSKIdentity, PSKLookup, PremasterSecret) ->
-    case handle_psk_identity(PSKIdentity, PSKLookup) of
-	{ok, PSK} when is_binary(PSK) ->
-	    Len = erlang:byte_size(PremasterSecret),
-	    PSKLen = erlang:byte_size(PSK),
-	    <<?UINT16(Len), PremasterSecret/binary, ?UINT16(PSKLen), PSK/binary>>;
-	#alert{} = Alert ->
-	    Alert;
-	_ ->
-	    throw(?ALERT_REC(?FATAL, ?ILLEGAL_PARAMETER))
-    end.
-
-handle_psk_identity(_PSKIdentity, LookupFun)
-  when LookupFun == undefined ->
-    error;
-handle_psk_identity(PSKIdentity, {Fun, UserState}) ->
-    Fun(psk, PSKIdentity, UserState).
-
-crl_check(_, false, _,_,_, _, _) ->
-    valid;
-crl_check(_, peer, _, _,_, valid, _) -> %% Do not check CAs with this option.
-    valid;
-crl_check(OtpCert, Check, CertDbHandle, CertDbRef, {Callback, CRLDbHandle}, _, CertPath) ->
-    Options = [{issuer_fun, {fun(_DP, CRL, Issuer, DBInfo) ->
-				     ssl_crl:trusted_cert_and_path(CRL, Issuer, {CertPath,
-                                                                                 DBInfo})
-			     end, {CertDbHandle, CertDbRef}}}, 
-	       {update_crl, fun(DP, CRL) -> Callback:fresh_crl(DP, CRL) end},
-               {undetermined_details, true}
-	      ],
-    case dps_and_crls(OtpCert, Callback, CRLDbHandle, ext) of
-	no_dps ->
-	    crl_check_same_issuer(OtpCert, Check,
-				  dps_and_crls(OtpCert, Callback, CRLDbHandle, same_issuer),
-				  Options);
-	DpsAndCRLs ->  %% This DP list may be empty if relevant CRLs existed 
-	    %% but could not be retrived, will result in {bad_cert, revocation_status_undetermined}
-	    case public_key:pkix_crls_validate(OtpCert, DpsAndCRLs, Options) of
-		{bad_cert, {revocation_status_undetermined, _}} ->
-		    crl_check_same_issuer(OtpCert, Check, dps_and_crls(OtpCert, Callback, 
-								       CRLDbHandle, same_issuer), Options);
-		Other ->
-		    Other
-	    end
-    end.
-
-crl_check_same_issuer(OtpCert, best_effort, Dps, Options) ->		
-    case public_key:pkix_crls_validate(OtpCert, Dps, Options) of 
-	{bad_cert, {revocation_status_undetermined, _}}   ->
-	    valid;
-	Other ->
-	    Other
-    end;
-crl_check_same_issuer(OtpCert, _, Dps, Options) ->    
-    public_key:pkix_crls_validate(OtpCert, Dps, Options).
-
-dps_and_crls(OtpCert, Callback, CRLDbHandle, ext) ->
-    case public_key:pkix_dist_points(OtpCert) of
-	[] ->
-	    no_dps;
-	DistPoints ->
-	    Issuer = OtpCert#'OTPCertificate'.tbsCertificate#'OTPTBSCertificate'.issuer,
-	    CRLs = distpoints_lookup(DistPoints, Issuer, Callback, CRLDbHandle),
-            dps_and_crls(DistPoints, CRLs, [])
-    end;
-
-dps_and_crls(OtpCert, Callback, CRLDbHandle, same_issuer) ->    
-    DP = #'DistributionPoint'{distributionPoint = {fullName, GenNames}} = 
-	public_key:pkix_dist_point(OtpCert),
-    CRLs = lists:flatmap(fun({directoryName, Issuer}) -> 
-				 Callback:select(Issuer, CRLDbHandle);
-			    (_) ->
-				 []
-			 end, GenNames),
-    [{DP, {CRL, public_key:der_decode('CertificateList', CRL)}} ||  CRL <- CRLs].
-
-dps_and_crls([], _, Acc) ->
-    Acc;
-dps_and_crls([DP | Rest], CRLs, Acc) ->
-    DpCRL = [{DP, {CRL, public_key:der_decode('CertificateList', CRL)}} ||  CRL <- CRLs],
-    dps_and_crls(Rest, CRLs, DpCRL ++ Acc).
-    
-distpoints_lookup([],_, _, _) ->
-    [];
-distpoints_lookup([DistPoint | Rest], Issuer, Callback, CRLDbHandle) ->
-    Result =
-	try Callback:lookup(DistPoint, Issuer, CRLDbHandle)
-	catch
-	    error:undef ->
-		%% The callback module still uses the 2-argument
-		%% version of the lookup function.
-		Callback:lookup(DistPoint, CRLDbHandle)
-	end,
-    case Result of
-	not_available ->
-	    distpoints_lookup(Rest, Issuer, Callback, CRLDbHandle);
-	CRLs ->
-	    CRLs
-    end.	
 
 sign_algo(?rsaEncryption) ->
     rsa;
@@ -2396,7 +2249,6 @@ is_acceptable_hash_sign(_, _, _, KeyExAlgo, _) when
     true; 
 is_acceptable_hash_sign(_,_, _,_,_) ->
     false.					
-
 is_acceptable_hash_sign(Algos, SupportedHashSigns) ->
     lists:member(Algos, SupportedHashSigns).
 
@@ -2416,21 +2268,164 @@ sign_type(dsa) ->
 sign_type(ecdsa) ->
     ?ECDSA_SIGN.
 
+server_name(_, _, server) ->
+    undefined; %% Not interesting to check your own name.
+server_name(undefined, Host, client) ->
+    {fallback, Host}; %% Fallback to Host argument to connect
+server_name(SNI, _, client) ->
+    SNI. %% If Server Name Indication is available
 
-bad_key(#'DSAPrivateKey'{}) ->
-    unacceptable_dsa_key;
-bad_key(#'RSAPrivateKey'{}) ->
-    unacceptable_rsa_key;
-bad_key(#'ECPrivateKey'{}) ->
-    unacceptable_ecdsa_key.
+client_ecc_extensions(SupportedECCs) ->
+    CryptoSupport = proplists:get_value(public_keys, crypto:supports()),
+    case proplists:get_bool(ecdh, CryptoSupport) of
+	true ->
+	    EcPointFormats = #ec_point_formats{ec_point_format_list = [?ECPOINT_UNCOMPRESSED]},
+	    EllipticCurves = SupportedECCs,
+	    {EcPointFormats, EllipticCurves};
+	_ ->
+	    {undefined, undefined}
+    end.
 
-available_signature_algs(undefined, SupportedHashSigns, _, Version) when 
-      Version >= {3,3} ->
-    SupportedHashSigns;
-available_signature_algs(#hash_sign_algos{hash_sign_algos = ClientHashSigns}, SupportedHashSigns, 
-                         _, Version) when Version >= {3,3} ->
-    sets:to_list(sets:intersection(sets:from_list(ClientHashSigns), 
-				   sets:from_list(SupportedHashSigns)));
-available_signature_algs(_, _, _, _) -> 
-    undefined.
+server_ecc_extension(_Version, EcPointFormats) ->
+    CryptoSupport = proplists:get_value(public_keys, crypto:supports()),
+    case proplists:get_bool(ecdh, CryptoSupport) of
+	true ->
+	    handle_ecc_point_fmt_extension(EcPointFormats);
+	false ->
+	    undefined
+    end.
+
+handle_ecc_point_fmt_extension(undefined) ->
+    undefined;
+handle_ecc_point_fmt_extension(_) ->
+    #ec_point_formats{ec_point_format_list = [?ECPOINT_UNCOMPRESSED]}.
+
+advertises_ec_ciphers([]) ->
+    false;
+advertises_ec_ciphers([#{key_exchange := ecdh_ecdsa} | _]) ->
+    true;
+advertises_ec_ciphers([#{key_exchange := ecdhe_ecdsa} | _]) ->
+    true;
+advertises_ec_ciphers([#{key_exchange := ecdh_rsa} | _]) ->
+    true;
+advertises_ec_ciphers([#{key_exchange := ecdhe_rsa} | _]) ->
+    true;
+advertises_ec_ciphers([#{key_exchange := ecdh_anon} | _]) ->
+    true;
+advertises_ec_ciphers([{ecdhe_psk, _,_,_} | _]) ->
+    true;
+advertises_ec_ciphers([_| Rest]) ->
+    advertises_ec_ciphers(Rest).
+
+select_shared_curve([], _) ->
+    no_curve;
+select_shared_curve([Curve | Rest], Curves) ->
+    case lists:member(Curve, Curves) of
+	true ->
+	    {namedCurve, Curve};
+	false ->
+	    select_shared_curve(Rest, Curves)
+    end.
+
+sni(undefined) ->
+    undefined;
+sni(disable) ->
+    undefined;
+sni(Hostname) ->
+    #sni{hostname = Hostname}.
 
+renegotiation_info(_, client, _, false) ->
+    #renegotiation_info{renegotiated_connection = undefined};
+renegotiation_info(_RecordCB, server, ConnectionStates, false) ->
+    ConnectionState  = ssl_record:current_connection_state(ConnectionStates, read),
+    case maps:get(secure_renegotiation, ConnectionState) of
+	true ->
+	    #renegotiation_info{renegotiated_connection = ?byte(0)};
+	false ->
+	    #renegotiation_info{renegotiated_connection = undefined}
+    end;
+renegotiation_info(_RecordCB, client, ConnectionStates, true) ->
+    ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
+    case  maps:get(secure_renegotiation, ConnectionState) of
+	true ->
+	    Data = maps:get(client_verify_data, ConnectionState),
+	    #renegotiation_info{renegotiated_connection = Data};
+	false ->
+	    #renegotiation_info{renegotiated_connection = undefined}
+    end;
+
+renegotiation_info(_RecordCB, server, ConnectionStates, true) ->
+    ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
+    case maps:get(secure_renegotiation, ConnectionState) of
+	true ->
+	    CData = maps:get(client_verify_data, ConnectionState),
+	    SData = maps:get(server_verify_data, ConnectionState),
+	    #renegotiation_info{renegotiated_connection = <<CData/binary, SData/binary>>};
+	false ->
+	    #renegotiation_info{renegotiated_connection = undefined}
+    end.
+
+handle_renegotiation_info(_RecordCB, _, #renegotiation_info{renegotiated_connection = ?byte(0)},
+			  ConnectionStates, false, _, _) ->
+    {ok, ssl_record:set_renegotiation_flag(true, ConnectionStates)};
+
+handle_renegotiation_info(_RecordCB, server, undefined, ConnectionStates, _, _, CipherSuites) ->
+    case is_member(?TLS_EMPTY_RENEGOTIATION_INFO_SCSV, CipherSuites) of
+	true ->
+	    {ok, ssl_record:set_renegotiation_flag(true, ConnectionStates)};
+	false ->
+	    {ok, ssl_record:set_renegotiation_flag(false, ConnectionStates)}
+    end;
+
+handle_renegotiation_info(_RecordCB, _, undefined, ConnectionStates, false, _, _) ->
+    {ok, ssl_record:set_renegotiation_flag(false, ConnectionStates)};
+
+handle_renegotiation_info(_RecordCB, client, #renegotiation_info{renegotiated_connection = ClientServerVerify},
+			  ConnectionStates, true, _, _) ->
+    ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
+    CData = maps:get(client_verify_data, ConnectionState),
+    SData = maps:get(server_verify_data, ConnectionState),
+    case <<CData/binary, SData/binary>> == ClientServerVerify of
+	true ->
+	    {ok, ConnectionStates};
+	false ->
+            ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, client_renegotiation)
+    end;
+handle_renegotiation_info(_RecordCB, server, #renegotiation_info{renegotiated_connection = ClientVerify},
+			  ConnectionStates, true, _, CipherSuites) ->
+
+      case is_member(?TLS_EMPTY_RENEGOTIATION_INFO_SCSV, CipherSuites) of
+	  true ->
+              ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {server_renegotiation, empty_renegotiation_info_scsv});
+	  false ->
+	      ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
+	      Data =  maps:get(client_verify_data, ConnectionState),
+	      case Data == ClientVerify of
+		  true ->
+		      {ok, ConnectionStates};
+		  false ->
+                      ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, server_renegotiation)
+	      end
+      end;
+
+handle_renegotiation_info(RecordCB, client, undefined, ConnectionStates, true, SecureRenegotation, _) ->
+    handle_renegotiation_info(RecordCB, ConnectionStates, SecureRenegotation);
+
+handle_renegotiation_info(RecordCB, server, undefined, ConnectionStates, true, SecureRenegotation, CipherSuites) ->
+     case is_member(?TLS_EMPTY_RENEGOTIATION_INFO_SCSV, CipherSuites) of
+	  true ->
+             ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, {server_renegotiation, empty_renegotiation_info_scsv});
+	 false ->
+	     handle_renegotiation_info(RecordCB, ConnectionStates, SecureRenegotation)
+     end.
+
+handle_renegotiation_info(_RecordCB, ConnectionStates, SecureRenegotation) ->
+    ConnectionState = ssl_record:current_connection_state(ConnectionStates, read),
+    case {SecureRenegotation, maps:get(secure_renegotiation, ConnectionState)} of
+	{_, true} ->
+            ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, already_secure);
+	{true, false} ->
+	    ?ALERT_REC(?FATAL, ?NO_RENEGOTIATION);
+	{false, false} ->
+	    {ok, ConnectionStates}
+    end.
diff --git a/lib/ssl/src/ssl_internal.hrl b/lib/ssl/src/ssl_internal.hrl
index 24ac34653e..9bb1cbaeb0 100644
--- a/lib/ssl/src/ssl_internal.hrl
+++ b/lib/ssl/src/ssl_internal.hrl
@@ -95,7 +95,8 @@
 	  certfile             :: binary(),
 	  cert                 :: public_key:der_encoded() | secret_printout() | 'undefined',
 	  keyfile              :: binary(),
-	  key	               :: {'RSAPrivateKey' | 'DSAPrivateKey' | 'ECPrivateKey' | 'PrivateKeyInfo', public_key:der_encoded()} | secret_printout() | 'undefined',
+	  key	               :: {'RSAPrivateKey' | 'DSAPrivateKey' | 'ECPrivateKey' | 'PrivateKeyInfo', 
+                                   public_key:der_encoded()} | key_map() | secret_printout() | 'undefined',
 	  password	       :: string() | secret_printout() | 'undefined',
 	  cacerts              :: [public_key:der_encoded()] | secret_printout() | 'undefined',
 	  cacertfile           :: binary(),
@@ -164,7 +165,15 @@
 		 connection_cb
 		}).
 
-
+-type key_map()              :: #{algorithm := rsa | dss | ecdsa,
+                                  %% engine and key_id ought to 
+                                  %% be :=, but putting it in
+                                  %% the spec gives dialyzer warning
+                                  %% of correct code!
+                                  engine => crypto:engine_ref(),
+                                  key_id => crypto:key_id(),
+                                  password => crypto:password()
+                                 }.
 -type state_name()           :: hello | abbreviated | certify | cipher | connection.
 -type gen_fsm_state_return() :: {next_state, state_name(), term()} |
 				{next_state, state_name(), term(), timeout()} |
diff --git a/lib/ssl/src/ssl_record.erl b/lib/ssl/src/ssl_record.erl
index 003ad4994b..dd6a3e8521 100644
--- a/lib/ssl/src/ssl_record.erl
+++ b/lib/ssl/src/ssl_record.erl
@@ -53,11 +53,11 @@
 -type ssl_atom_version() :: tls_record:tls_atom_version().
 -type connection_states() :: term(). %% Map
 -type connection_state() :: term(). %% Map
+
 %%====================================================================
-%% Internal application API
+%% Connection state handling
 %%====================================================================
 
-
 %%--------------------------------------------------------------------
 -spec current_connection_state(connection_states(), read | write) ->
 				      connection_state().
@@ -267,6 +267,9 @@ set_pending_cipher_state(#{pending_read := Read,
       pending_read => Read#{cipher_state => ServerState},
       pending_write => Write#{cipher_state => ClientState}}.
 
+%%====================================================================
+%% Compression
+%%====================================================================
 
 uncompress(?NULL, Data, CS) ->
     {Data, CS}.
@@ -282,6 +285,11 @@ compress(?NULL, Data, CS) ->
 compressions() ->
     [?byte(?NULL)].
 
+
+%%====================================================================
+%% Payload encryption/decryption
+%%====================================================================
+
 %%--------------------------------------------------------------------
 -spec cipher(ssl_version(), iodata(), connection_state(), MacHash::binary()) ->
 		    {CipherFragment::binary(), connection_state()}.
diff --git a/lib/ssl/src/tls_connection.erl b/lib/ssl/src/tls_connection.erl
index 9272aebbf4..406a095d2e 100644
--- a/lib/ssl/src/tls_connection.erl
+++ b/lib/ssl/src/tls_connection.erl
@@ -45,10 +45,8 @@
 %% Setup
 -export([start_fsm/8, start_link/7, init/1]).
 
--export([encode_data/3, encode_alert/3]).
-
 %% State transition handling	 
--export([next_record/1, next_event/3, next_event/4]).
+-export([next_record/1, next_event/3, next_event/4, handle_common_event/4]).
 
 %% Handshake handling
 -export([renegotiate/2, send_handshake/2, 
@@ -56,11 +54,11 @@
 	 reinit_handshake_data/1,  select_sni_extension/1, empty_connection_state/2]).
 
 %% Alert and close handling
--export([send_alert/2, close/5, protocol_name/0]).
+-export([encode_alert/3, send_alert/2, close/5, protocol_name/0]).
 
 %% Data handling
--export([passive_receive/2, next_record_if_active/1, handle_common_event/4, send/3,
-        socket/5, setopts/3, getopts/3]).
+-export([encode_data/3, passive_receive/2, next_record_if_active/1, send/3,
+         socket/5, setopts/3, getopts/3]).
 
 %% gen_statem state functions
 -export([init/3, error/3, downgrade/3, %% Initiation and take down states
@@ -72,6 +70,9 @@
 %%====================================================================
 %% Internal application API
 %%====================================================================	     
+%%====================================================================
+%% Setup
+%%====================================================================
 start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = false},_, Tracker} = Opts,
 	  User, {CbModule, _,_, _} = CbInfo, 
 	  Timeout) -> 
@@ -100,6 +101,165 @@ start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = true},_, Tracker} =
 	    Error
     end.
 
+%%--------------------------------------------------------------------
+-spec start_link(atom(), host(), inet:port_number(), port(), list(), pid(), tuple()) ->
+    {ok, pid()} | ignore |  {error, reason()}.
+%%
+%% Description: Creates a gen_statem process which calls Module:init/1 to
+%% initialize. 
+%%--------------------------------------------------------------------
+start_link(Role, Host, Port, Socket, Options, User, CbInfo) ->
+    {ok, proc_lib:spawn_link(?MODULE, init, [[Role, Host, Port, Socket, Options, User, CbInfo]])}.
+
+init([Role, Host, Port, Socket, Options,  User, CbInfo]) ->
+    process_flag(trap_exit, true),
+    State0 = initial_state(Role, Host, Port, Socket, Options, User, CbInfo),
+    try 
+	State = ssl_connection:ssl_config(State0#state.ssl_options, Role, State0),
+	gen_statem:enter_loop(?MODULE, [], init, State)
+    catch throw:Error ->
+	gen_statem:enter_loop(?MODULE, [], error, {Error, State0}) 
+    end.
+%%====================================================================
+%% State transition handling
+%%====================================================================
+next_record(#state{unprocessed_handshake_events = N} = State) when N > 0 ->
+    {no_record, State#state{unprocessed_handshake_events = N-1}};
+					 
+next_record(#state{protocol_buffers =
+		       #protocol_buffers{tls_packets = [], tls_cipher_texts = [CT | Rest]}
+		   = Buffers,
+		   connection_states = ConnStates0,
+		   ssl_options = #ssl_options{padding_check = Check}} = State) ->
+    case tls_record:decode_cipher_text(CT, ConnStates0, Check) of
+	{Plain, ConnStates} ->		      
+	    {Plain, State#state{protocol_buffers =
+				    Buffers#protocol_buffers{tls_cipher_texts = Rest},
+				connection_states = ConnStates}};
+	#alert{} = Alert ->
+	    {Alert, State}
+    end;
+next_record(#state{protocol_buffers = #protocol_buffers{tls_packets = [], tls_cipher_texts = []},
+		   socket = Socket,
+                   close_tag = CloseTag,
+		   transport_cb = Transport} = State) ->
+    case tls_socket:setopts(Transport, Socket, [{active,once}]) of
+	ok ->
+	    {no_record, State};
+	_ ->
+            self() ! {CloseTag, Socket},
+	    {no_record, State}
+    end;
+next_record(State) ->
+    {no_record, State}.
+
+next_event(StateName, Record, State) ->
+    next_event(StateName, Record, State, []).
+
+next_event(connection = StateName, no_record, State0, Actions) ->
+    case next_record_if_active(State0) of
+	{no_record, State} ->
+	    ssl_connection:hibernate_after(StateName, State, Actions);
+	{#ssl_tls{} = Record, State} ->
+	    {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]};
+	{#alert{} = Alert, State} ->
+	    {next_state, StateName, State, [{next_event, internal, Alert} | Actions]}
+    end;
+next_event(StateName, Record, State, Actions) ->
+    case Record of
+	no_record ->
+	    {next_state, StateName, State, Actions};
+	#ssl_tls{} = Record ->
+	    {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]};
+	#alert{} = Alert ->
+	    {next_state, StateName, State, [{next_event, internal, Alert} | Actions]}
+    end.
+
+handle_common_event(internal, #alert{} = Alert, StateName, 
+		    #state{negotiated_version = Version} = State) ->
+    ssl_connection:handle_own_alert(Alert, Version, StateName, State);
+%%% TLS record protocol level handshake messages 
+handle_common_event(internal,  #ssl_tls{type = ?HANDSHAKE, fragment = Data}, 
+		    StateName, #state{protocol_buffers =
+					  #protocol_buffers{tls_handshake_buffer = Buf0} = Buffers,
+				      negotiated_version = Version,
+				      ssl_options = Options} = State0) ->
+    try
+	{Packets, Buf} = tls_handshake:get_tls_handshake(Version,Data,Buf0, Options),
+	State1 =
+	    State0#state{protocol_buffers =
+			     Buffers#protocol_buffers{tls_handshake_buffer = Buf}},
+	case Packets of
+            [] -> 
+                assert_buffer_sanity(Buf, Options),
+                {Record, State} = next_record(State1),
+                next_event(StateName, Record, State);
+            _ ->                
+                Events = tls_handshake_events(Packets),
+                case StateName of
+                    connection ->
+                        ssl_connection:hibernate_after(StateName, State1, Events);
+                    _ ->
+                        {next_state, StateName, 
+                         State1#state{unprocessed_handshake_events = unprocessed_events(Events)}, Events}
+                end
+        end
+    catch throw:#alert{} = Alert ->
+            ssl_connection:handle_own_alert(Alert, Version, StateName, State0)
+    end;
+%%% TLS record protocol level application data messages 
+handle_common_event(internal, #ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, StateName, State) ->
+    {next_state, StateName, State, [{next_event, internal, {application_data, Data}}]};
+%%% TLS record protocol level change cipher messages
+handle_common_event(internal, #ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = Data}, StateName, State) ->
+    {next_state, StateName, State, [{next_event, internal, #change_cipher_spec{type = Data}}]};
+%%% TLS record protocol level Alert messages
+handle_common_event(internal, #ssl_tls{type = ?ALERT, fragment = EncAlerts}, StateName,
+		    #state{negotiated_version = Version} = State) ->
+    try decode_alerts(EncAlerts) of	
+	Alerts = [_|_] ->
+	    handle_alerts(Alerts,  {next_state, StateName, State});
+	[] ->
+	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, empty_alert), 
+					    Version, StateName, State);
+	#alert{} = Alert ->
+	    ssl_connection:handle_own_alert(Alert, Version, StateName, State)
+    catch
+	_:_ ->
+	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, alert_decode_error),
+					    Version, StateName, State)  
+
+    end;
+%% Ignore unknown TLS record level protocol messages
+handle_common_event(internal, #ssl_tls{type = _Unknown}, StateName, State) ->
+    {next_state, StateName, State}.
+%%====================================================================
+%% Handshake handling
+%%====================================================================
+renegotiate(#state{role = client} = State, Actions) ->
+    %% Handle same way as if server requested
+    %% the renegotiation
+    Hs0 = ssl_handshake:init_handshake_history(),
+    {next_state, connection, State#state{tls_handshake_history = Hs0}, 
+     [{next_event, internal, #hello_request{}} | Actions]};
+
+renegotiate(#state{role = server,
+		   socket = Socket,
+		   transport_cb = Transport,
+		   negotiated_version = Version,
+		   connection_states = ConnectionStates0} = State0, Actions) ->
+    HelloRequest = ssl_handshake:hello_request(),
+    Frag = tls_handshake:encode_handshake(HelloRequest, Version),
+    Hs0 = ssl_handshake:init_handshake_history(),
+    {BinMsg, ConnectionStates} = 
+	tls_record:encode_handshake(Frag, Version, ConnectionStates0),
+    send(Transport, Socket, BinMsg),
+    State1 = State0#state{connection_states = 
+			     ConnectionStates,
+			 tls_handshake_history = Hs0},
+    {Record, State} = next_record(State1),
+    next_event(hello, Record, State, Actions).
+	     
 send_handshake(Handshake, State) ->
     send_handshake_flight(queue_handshake(Handshake, State)).
 
@@ -128,15 +288,6 @@ queue_change_cipher(Msg, #state{negotiated_version = Version,
     State0#state{connection_states = ConnectionStates,
 		 flight_buffer = Flight0 ++ [BinChangeCipher]}.
 
-send_alert(Alert, #state{negotiated_version = Version,
-			 socket = Socket,
-			 transport_cb = Transport,
-			 connection_states = ConnectionStates0} = State0) ->
-    {BinMsg, ConnectionStates} =
-	encode_alert(Alert, Version, ConnectionStates0),
-    send(Transport, Socket, BinMsg),
-    State0#state{connection_states = ConnectionStates}.
-
 reinit_handshake_data(State) ->
     %% premaster_secret, public_key_info and tls_handshake_info 
     %% are only needed during the handshake phase. 
@@ -155,8 +306,17 @@ select_sni_extension(_) ->
 empty_connection_state(ConnectionEnd, BeastMitigation) ->
     ssl_record:empty_connection_state(ConnectionEnd, BeastMitigation).
 
-encode_data(Data, Version, ConnectionStates0)->
-    tls_record:encode_data(Data, Version, ConnectionStates0).
+%%====================================================================
+%% Alert and close handling
+%%====================================================================	     
+send_alert(Alert, #state{negotiated_version = Version,
+			 socket = Socket,
+			 transport_cb = Transport,
+			 connection_states = ConnectionStates0} = State0) ->
+    {BinMsg, ConnectionStates} =
+	encode_alert(Alert, Version, ConnectionStates0),
+    send(Transport, Socket, BinMsg),
+    State0#state{connection_states = ConnectionStates}.
 
 %%--------------------------------------------------------------------
 -spec encode_alert(#alert{}, ssl_record:ssl_version(), ssl_record:connection_states()) -> 
@@ -166,42 +326,66 @@ encode_data(Data, Version, ConnectionStates0)->
 %%--------------------------------------------------------------------
 encode_alert(#alert{} = Alert, Version, ConnectionStates) ->
     tls_record:encode_alert_record(Alert, Version, ConnectionStates).
-
+%% User closes or recursive call!
+close({close, Timeout}, Socket, Transport = gen_tcp, _,_) ->
+    tls_socket:setopts(Transport, Socket, [{active, false}]),
+    Transport:shutdown(Socket, write),
+    _ = Transport:recv(Socket, 0, Timeout),
+    ok;
+%% Peer closed socket
+close({shutdown, transport_closed}, Socket, Transport = gen_tcp, ConnectionStates, Check) ->
+    close({close, 0}, Socket, Transport, ConnectionStates, Check);
+%% We generate fatal alert
+close({shutdown, own_alert}, Socket, Transport = gen_tcp, ConnectionStates, Check) ->
+    %% Standard trick to try to make sure all
+    %% data sent to the tcp port is really delivered to the
+    %% peer application before tcp port is closed so that the peer will
+    %% get the correct TLS alert message and not only a transport close.
+    %% Will return when other side has closed or after timout millisec
+    %% e.g. we do not want to hang if something goes wrong
+    %% with the network but we want to maximise the odds that
+    %% peer application gets all data sent on the tcp connection.
+    close({close, ?DEFAULT_TIMEOUT}, Socket, Transport, ConnectionStates, Check);
+close(downgrade, _,_,_,_) ->
+    ok;
+%% Other
+close(_, Socket, Transport, _,_) -> 
+    Transport:close(Socket).
 protocol_name() ->
     "TLS".
-%%====================================================================
-%% tls_connection_sup API
-%%====================================================================
 
-%%--------------------------------------------------------------------
--spec start_link(atom(), host(), inet:port_number(), port(), list(), pid(), tuple()) ->
-    {ok, pid()} | ignore |  {error, reason()}.
-%%
-%% Description: Creates a gen_fsm process which calls Module:init/1 to
-%% initialize. To ensure a synchronized start-up procedure, this function
-%% does not return until Module:init/1 has returned.  
-%%--------------------------------------------------------------------
-start_link(Role, Host, Port, Socket, Options, User, CbInfo) ->
-    {ok, proc_lib:spawn_link(?MODULE, init, [[Role, Host, Port, Socket, Options, User, CbInfo]])}.
+%%====================================================================
+%% Data handling
+%%====================================================================	     
+encode_data(Data, Version, ConnectionStates0)->
+    tls_record:encode_data(Data, Version, ConnectionStates0).
 
-init([Role, Host, Port, Socket, Options,  User, CbInfo]) ->
-    process_flag(trap_exit, true),
-    State0 = initial_state(Role, Host, Port, Socket, Options, User, CbInfo),
-    try 
-	State = ssl_connection:ssl_config(State0#state.ssl_options, Role, State0),
-	gen_statem:enter_loop(?MODULE, [], init, State)
-    catch throw:Error ->
-	gen_statem:enter_loop(?MODULE, [], error, {Error, State0}) 
+passive_receive(State0 = #state{user_data_buffer = Buffer}, StateName) -> 
+    case Buffer of
+	<<>> ->
+	    {Record, State} = next_record(State0),
+	    next_event(StateName, Record, State);
+	_ ->
+	    {Record, State} = ssl_connection:read_application_data(<<>>, State0),
+	    next_event(StateName, Record, State)
     end.
 
-callback_mode() ->
-    state_functions.
+next_record_if_active(State = 
+		      #state{socket_options = 
+			     #socket_options{active = false}}) -> 
+    {no_record ,State};
+next_record_if_active(State) ->
+    next_record(State).
+
+send(Transport, Socket, Data) ->
+   tls_socket:send(Transport, Socket, Data).
 
 socket(Pid,  Transport, Socket, Connection, Tracker) ->
     tls_socket:socket(Pid, Transport, Socket, Connection, Tracker).
 
 setopts(Transport, Socket, Other) ->
     tls_socket:setopts(Transport, Socket, Other).
+
 getopts(Transport, Socket, Tag) ->
     tls_socket:getopts(Transport, Socket, Tag).
 
@@ -244,7 +428,7 @@ init({call, From}, {start, Timeout},
     {Record, State} = next_record(State1),
     next_event(hello, Record, State);
 init(Type, Event, State) ->
-    gen_handshake(ssl_connection, init, Type, Event, State).
+    gen_handshake(?FUNCTION_NAME, Type, Event, State).
  
 %%--------------------------------------------------------------------
 -spec error(gen_statem:event_type(),
@@ -253,9 +437,10 @@ init(Type, Event, State) ->
 %%--------------------------------------------------------------------
 
 error({call, From}, {start, _Timeout}, {Error, State}) ->
-    {stop_and_reply, normal, {reply, From, {error, Error}}, State};
-error({call, From}, Msg, State) ->
-    handle_call(Msg, From, error, State);
+    ssl_connection:stop_and_reply(
+      normal, {reply, From, {error, Error}}, State);
+error({call, _} = Call, Msg, State) ->
+    gen_handshake(?FUNCTION_NAME, Call, Msg, State);
 error(_, _, _) ->
      {keep_state_and_data, [postpone]}.
  
@@ -285,13 +470,13 @@ hello(internal, #client_hello{client_version = ClientVersion} = Hello,
 			   undefined -> CurrentProtocol;
 			   _ -> Protocol0
 		       end,
-	    
-	    gen_handshake(ssl_connection, hello, internal, {common_client_hello, Type, ServerHelloExt},
-				 State#state{connection_states  = ConnectionStates,
-					     negotiated_version = Version,
-					     hashsign_algorithm = HashSign,
-					     session = Session,
-					     negotiated_protocol = Protocol})
+            gen_handshake(?FUNCTION_NAME, internal, {common_client_hello, Type, ServerHelloExt},
+                          State#state{connection_states  = ConnectionStates,
+                                      negotiated_version = Version,
+                                      hashsign_algorithm = HashSign,
+                                      client_hello_version = ClientVersion,
+                                      session = Session,
+                                      negotiated_protocol = Protocol})
     end;
 hello(internal, #server_hello{} = Hello,
       #state{connection_states = ConnectionStates0,
@@ -307,36 +492,36 @@ hello(internal, #server_hello{} = Hello,
 					  Version, NewId, ConnectionStates, ProtoExt, Protocol, State)
     end;
 hello(info, Event, State) ->
-    gen_info(Event, hello, State);
+    gen_info(Event, ?FUNCTION_NAME, State);
 hello(Type, Event, State) ->
-    gen_handshake(ssl_connection, hello, Type, Event, State).
+    gen_handshake(?FUNCTION_NAME, Type, Event, State).
 
 %%--------------------------------------------------------------------
 -spec abbreviated(gen_statem:event_type(), term(), #state{}) ->
 			 gen_statem:state_function_result().
 %%--------------------------------------------------------------------
 abbreviated(info, Event, State) ->
-    gen_info(Event, abbreviated, State);
+    gen_info(Event, ?FUNCTION_NAME, State);
 abbreviated(Type, Event, State) ->
-    gen_handshake(ssl_connection, abbreviated, Type, Event, State).
+    gen_handshake(?FUNCTION_NAME, Type, Event, State).
 
 %%--------------------------------------------------------------------
 -spec certify(gen_statem:event_type(), term(), #state{}) ->
 		     gen_statem:state_function_result().
 %%--------------------------------------------------------------------
 certify(info, Event, State) ->
-    gen_info(Event, certify, State);
+    gen_info(Event, ?FUNCTION_NAME, State);
 certify(Type, Event, State) ->
-    gen_handshake(ssl_connection, certify, Type, Event, State).
+    gen_handshake(?FUNCTION_NAME, Type, Event, State).
 
 %%--------------------------------------------------------------------
 -spec cipher(gen_statem:event_type(), term(), #state{}) ->
 		    gen_statem:state_function_result().
 %%--------------------------------------------------------------------
 cipher(info, Event, State) ->
-    gen_info(Event, cipher, State);
+    gen_info(Event, ?FUNCTION_NAME, State);
 cipher(Type, Event, State) ->
-     gen_handshake(ssl_connection, cipher, Type, Event, State).
+     gen_handshake(?FUNCTION_NAME, Type, Event, State).
 
 %%--------------------------------------------------------------------
 -spec connection(gen_statem:event_type(),  
@@ -344,7 +529,7 @@ cipher(Type, Event, State) ->
 			gen_statem:state_function_result().
 %%--------------------------------------------------------------------
 connection(info, Event, State) ->
-    gen_info(Event, connection, State);
+    gen_info(Event, ?FUNCTION_NAME, State);
 connection(internal, #hello_request{},
 	   #state{role = client, host = Host, port = Port,
 		  session = #session{own_certificate = Cert} = Session0,
@@ -376,9 +561,9 @@ connection(internal, #client_hello{},
     Alert = ?ALERT_REC(?WARNING, ?NO_RENEGOTIATION),
     State1 = send_alert(Alert, State0),
     {Record, State} = ssl_connection:prepare_connection(State1, ?MODULE),
-    next_event(connection, Record, State);
+    next_event(?FUNCTION_NAME, Record, State);
 connection(Type, Event, State) ->
-    ssl_connection:connection(Type, Event, State, ?MODULE).
+    ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
 
 %%--------------------------------------------------------------------
 -spec death_row(gen_statem:event_type(), term(), #state{}) ->
@@ -392,158 +577,26 @@ death_row(Type, Event, State) ->
 		       gen_statem:state_function_result().
 %%--------------------------------------------------------------------
 downgrade(Type, Event, State) ->
-     ssl_connection:downgrade(Type, Event, State, ?MODULE).
-
-%%--------------------------------------------------------------------
-%% Event handling functions called by state functions to handle
-%% common or unexpected events for the state.
-%%--------------------------------------------------------------------
-handle_call(Event, From, StateName, State) ->
-    ssl_connection:handle_call(Event, From, StateName, State, ?MODULE).
- 
-%% raw data from socket, unpack records
-handle_info({Protocol, _, Data}, StateName,
-            #state{data_tag = Protocol} = State0) ->
-    case next_tls_record(Data, State0) of
-	{Record, State} ->
-	    next_event(StateName, Record, State);
-	#alert{} = Alert ->
-	    ssl_connection:handle_normal_shutdown(Alert, StateName, State0), 
-	    {stop, {shutdown, own_alert}}
-    end;
-handle_info({CloseTag, Socket}, StateName,
-            #state{socket = Socket, close_tag = CloseTag,
-                   socket_options = #socket_options{active = Active},
-                   protocol_buffers = #protocol_buffers{tls_cipher_texts = CTs},
-		   negotiated_version = Version} = State) ->
-
-    %% Note that as of TLS 1.1,
-    %% failure to properly close a connection no longer requires that a
-    %% session not be resumed.  This is a change from TLS 1.0 to conform
-    %% with widespread implementation practice.
+     ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
 
-    case (Active == false) andalso (CTs =/= []) of
-        false ->
-            case Version of
-                {1, N} when N >= 1 ->
-                    ok;
-                _ ->
-                    %% As invalidate_sessions here causes performance issues,
-                    %% we will conform to the widespread implementation
-                    %% practice and go aginst the spec
-                    %%invalidate_session(Role, Host, Port, Session)
-                    ok
-            end,
-
-            ssl_connection:handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
-            {stop, {shutdown, transport_closed}};
-        true ->
-            %% Fixes non-delivery of final TLS record in {active, once}.
-            %% Basically allows the application the opportunity to set {active, once} again
-            %% and then receive the final message.
-            next_event(StateName, no_record, State)
-    end;
-handle_info(Msg, StateName, State) ->
-    ssl_connection:StateName(info, Msg, State, ?MODULE).
-
-handle_common_event(internal, #alert{} = Alert, StateName, 
-		    #state{negotiated_version = Version} = State) ->
-    ssl_connection:handle_own_alert(Alert, Version, StateName, State);
-
-%%% TLS record protocol level handshake messages 
-handle_common_event(internal,  #ssl_tls{type = ?HANDSHAKE, fragment = Data}, 
-		    StateName, #state{protocol_buffers =
-					  #protocol_buffers{tls_handshake_buffer = Buf0} = Buffers,
-				      negotiated_version = Version,
-				      ssl_options = Options} = State0) ->
-    try
-	{Packets, Buf} = tls_handshake:get_tls_handshake(Version,Data,Buf0, Options),
-	State1 =
-	    State0#state{protocol_buffers =
-			     Buffers#protocol_buffers{tls_handshake_buffer = Buf}},
-	case Packets of
-            [] -> 
-                assert_buffer_sanity(Buf, Options),
-                {Record, State} = next_record(State1),
-                next_event(StateName, Record, State);
-            _ ->                
-                Events = tls_handshake_events(Packets),
-                case StateName of
-                    connection ->
-                        ssl_connection:hibernate_after(StateName, State1, Events);
-                    _ ->
-                        {next_state, StateName, 
-                         State1#state{unprocessed_handshake_events = unprocessed_events(Events)}, Events}
-                end
-        end
-    catch throw:#alert{} = Alert ->
-            ssl_connection:handle_own_alert(Alert, Version, StateName, State0)
-    end;
-%%% TLS record protocol level application data messages 
-handle_common_event(internal, #ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, StateName, State) ->
-    {next_state, StateName, State, [{next_event, internal, {application_data, Data}}]};
-%%% TLS record protocol level change cipher messages
-handle_common_event(internal, #ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = Data}, StateName, State) ->
-    {next_state, StateName, State, [{next_event, internal, #change_cipher_spec{type = Data}}]};
-%%% TLS record protocol level Alert messages
-handle_common_event(internal, #ssl_tls{type = ?ALERT, fragment = EncAlerts}, StateName,
-		    #state{negotiated_version = Version} = State) ->
-    try decode_alerts(EncAlerts) of	
-	Alerts = [_|_] ->
-	    handle_alerts(Alerts,  {next_state, StateName, State});
-	[] ->
-	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, empty_alert), 
-					    Version, StateName, State);
-	#alert{} = Alert ->
-	    ssl_connection:handle_own_alert(Alert, Version, StateName, State)
-    catch
-	_:_ ->
-	    ssl_connection:handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, alert_decode_error),
-					    Version, StateName, State)  
-
-    end;
-%% Ignore unknown TLS record level protocol messages
-handle_common_event(internal, #ssl_tls{type = _Unknown}, StateName, State) ->
-    {next_state, StateName, State}.
-
-send(Transport, Socket, Data) ->
-   tls_socket:send(Transport, Socket, Data).
-
-%%--------------------------------------------------------------------
+%--------------------------------------------------------------------
 %% gen_statem callbacks
 %%--------------------------------------------------------------------
+callback_mode() ->
+    state_functions.
+
 terminate(Reason, StateName, State) ->
     catch ssl_connection:terminate(Reason, StateName, State).
 
 format_status(Type, Data) ->
     ssl_connection:format_status(Type, Data).
 
-%%--------------------------------------------------------------------
-%% code_change(OldVsn, StateName, State, Extra) -> {ok, StateName, NewState}
-%% Description: Convert process state when code is changed
-%%--------------------------------------------------------------------
-code_change(_OldVsn, StateName, State0, {Direction, From, To}) ->
-    State = convert_state(State0, Direction, From, To),
-    {ok, StateName, State};
 code_change(_OldVsn, StateName, State, _) ->
     {ok, StateName, State}.
 
 %%--------------------------------------------------------------------
 %%% Internal functions
 %%--------------------------------------------------------------------
-encode_handshake(Handshake, Version, ConnectionStates0, Hist0, V2HComp) ->
-    Frag = tls_handshake:encode_handshake(Handshake, Version),
-    Hist = ssl_handshake:update_handshake_history(Hist0, Frag, V2HComp),
-    {Encoded, ConnectionStates} =
-        tls_record:encode_handshake(Frag, Version, ConnectionStates0),
-    {Encoded, ConnectionStates, Hist}.
-
-encode_change_cipher(#change_cipher_spec{}, Version, ConnectionStates) ->
-    tls_record:encode_change_cipher_spec(Version, ConnectionStates).
-
-decode_alerts(Bin) ->
-    ssl_alert:decode(Bin).
-
 initial_state(Role, Host, Port, Socket, {SSLOptions, SocketOptions, Tracker}, User,
 	      {CbModule, DataTag, CloseTag, ErrorTag}) ->
     #ssl_options{beast_mitigation = BeastMitigation} = SSLOptions,
@@ -593,159 +646,82 @@ next_tls_record(Data, #state{protocol_buffers = #protocol_buffers{tls_record_buf
 	#alert{} = Alert ->
 	    Alert
     end.
-next_record(#state{unprocessed_handshake_events = N} = State) when N > 0 ->
-    {no_record, State#state{unprocessed_handshake_events = N-1}};
-					 
-next_record(#state{protocol_buffers =
-		       #protocol_buffers{tls_packets = [], tls_cipher_texts = [CT | Rest]}
-		   = Buffers,
-		   connection_states = ConnStates0,
-		   ssl_options = #ssl_options{padding_check = Check}} = State) ->
-    case tls_record:decode_cipher_text(CT, ConnStates0, Check) of
-	{Plain, ConnStates} ->		      
-	    {Plain, State#state{protocol_buffers =
-				    Buffers#protocol_buffers{tls_cipher_texts = Rest},
-				connection_states = ConnStates}};
-	#alert{} = Alert ->
-	    {Alert, State}
-    end;
-next_record(#state{protocol_buffers = #protocol_buffers{tls_packets = [], tls_cipher_texts = []},
-		   socket = Socket,
-		   transport_cb = Transport} = State) ->
-    case tls_socket:setopts(Transport, Socket, [{active,once}]) of
-	ok ->
-	    {no_record, State};
-	_ ->
-	    {socket_closed, State}
-    end;
-next_record(State) ->
-    {no_record, State}.
-
-next_record_if_active(State = 
-		      #state{socket_options = 
-			     #socket_options{active = false}}) -> 
-    {no_record ,State};
-
-next_record_if_active(State) ->
-    next_record(State).
-
-passive_receive(State0 = #state{user_data_buffer = Buffer}, StateName) -> 
-    case Buffer of
-	<<>> ->
-	    {Record, State} = next_record(State0),
-	    next_event(StateName, Record, State);
-	_ ->
-	    {Record, State} = ssl_connection:read_application_data(<<>>, State0),
-	    next_event(StateName, Record, State)
-    end.
-
-next_event(StateName, Record, State) ->
-    next_event(StateName, Record, State, []).
-
-next_event(StateName, socket_closed, State, _) ->
-    ssl_connection:handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
-    {stop, {shutdown, transport_closed}, State};
-next_event(connection = StateName, no_record, State0, Actions) ->
-    case next_record_if_active(State0) of
-	{no_record, State} ->
-	    ssl_connection:hibernate_after(StateName, State, Actions);
-	{socket_closed, State} ->
-	    next_event(StateName, socket_closed, State, Actions);
-	{#ssl_tls{} = Record, State} ->
-	    {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]};
-	{#alert{} = Alert, State} ->
-	    {next_state, StateName, State, [{next_event, internal, Alert} | Actions]}
-    end;
-next_event(StateName, Record, State, Actions) ->
-    case Record of
-	no_record ->
-	    {next_state, StateName, State, Actions};
-	#ssl_tls{} = Record ->
-	    {next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]};
-	#alert{} = Alert ->
-	    {next_state, StateName, State, [{next_event, internal, Alert} | Actions]}
-    end.
 
 tls_handshake_events(Packets) ->
     lists:map(fun(Packet) ->
 		      {next_event, internal, {handshake, Packet}}
 	      end, Packets).
 
+%% raw data from socket, upack records
+handle_info({Protocol, _, Data}, StateName,
+            #state{data_tag = Protocol} = State0) ->
+    case next_tls_record(Data, State0) of
+	{Record, State} ->
+	    next_event(StateName, Record, State);
+	#alert{} = Alert ->
+	    ssl_connection:handle_normal_shutdown(Alert, StateName, State0), 
+	    ssl_connection:stop({shutdown, own_alert}, State0)
+    end;
+handle_info({CloseTag, Socket}, StateName,
+            #state{socket = Socket, close_tag = CloseTag,
+                   socket_options = #socket_options{active = Active},
+                   protocol_buffers = #protocol_buffers{tls_cipher_texts = CTs},
+		   negotiated_version = Version} = State) ->
 
-renegotiate(#state{role = client} = State, Actions) ->
-    %% Handle same way as if server requested
-    %% the renegotiation
-    Hs0 = ssl_handshake:init_handshake_history(),
-    {next_state, connection, State#state{tls_handshake_history = Hs0}, 
-     [{next_event, internal, #hello_request{}} | Actions]};
+    %% Note that as of TLS 1.1,
+    %% failure to properly close a connection no longer requires that a
+    %% session not be resumed.  This is a change from TLS 1.0 to conform
+    %% with widespread implementation practice.
 
-renegotiate(#state{role = server,
-		   socket = Socket,
-		   transport_cb = Transport,
-		   negotiated_version = Version,
-		   connection_states = ConnectionStates0} = State0, Actions) ->
-    HelloRequest = ssl_handshake:hello_request(),
-    Frag = tls_handshake:encode_handshake(HelloRequest, Version),
-    Hs0 = ssl_handshake:init_handshake_history(),
-    {BinMsg, ConnectionStates} = 
-	tls_record:encode_handshake(Frag, Version, ConnectionStates0),
-    send(Transport, Socket, BinMsg),
-    State1 = State0#state{connection_states = 
-			     ConnectionStates,
-			 tls_handshake_history = Hs0},
-    {Record, State} = next_record(State1),
-    next_event(hello, Record, State, Actions).
+    case (Active == false) andalso (CTs =/= []) of
+        false ->
+            case Version of
+                {1, N} when N >= 1 ->
+                    ok;
+                _ ->
+                    %% As invalidate_sessions here causes performance issues,
+                    %% we will conform to the widespread implementation
+                    %% practice and go aginst the spec
+                    %%invalidate_session(Role, Host, Port, Session)
+                    ok
+            end,
+
+            ssl_connection:handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
+            ssl_connection:stop({shutdown, transport_closed}, State);
+        true ->
+            %% Fixes non-delivery of final TLS record in {active, once}.
+            %% Basically allows the application the opportunity to set {active, once} again
+            %% and then receive the final message.
+            next_event(StateName, no_record, State)
+    end;
+handle_info(Msg, StateName, State) ->
+    ssl_connection:StateName(info, Msg, State, ?MODULE).
 
 handle_alerts([], Result) ->
     Result;
-handle_alerts(_, {stop,_} = Stop) ->
+handle_alerts(_, {stop, _, _} = Stop) ->
     Stop;
 handle_alerts([Alert | Alerts], {next_state, StateName, State}) ->
      handle_alerts(Alerts, ssl_connection:handle_alert(Alert, StateName, State));
 handle_alerts([Alert | Alerts], {next_state, StateName, State, _Actions}) ->
      handle_alerts(Alerts, ssl_connection:handle_alert(Alert, StateName, State)).
 
+encode_handshake(Handshake, Version, ConnectionStates0, Hist0, V2HComp) ->
+    Frag = tls_handshake:encode_handshake(Handshake, Version),
+    Hist = ssl_handshake:update_handshake_history(Hist0, Frag, V2HComp),
+    {Encoded, ConnectionStates} =
+        tls_record:encode_handshake(Frag, Version, ConnectionStates0),
+    {Encoded, ConnectionStates, Hist}.
 
-%% User closes or recursive call!
-close({close, Timeout}, Socket, Transport = gen_tcp, _,_) ->
-    tls_socket:setopts(Transport, Socket, [{active, false}]),
-    Transport:shutdown(Socket, write),
-    _ = Transport:recv(Socket, 0, Timeout),
-    ok;
-%% Peer closed socket
-close({shutdown, transport_closed}, Socket, Transport = gen_tcp, ConnectionStates, Check) ->
-    close({close, 0}, Socket, Transport, ConnectionStates, Check);
-%% We generate fatal alert
-close({shutdown, own_alert}, Socket, Transport = gen_tcp, ConnectionStates, Check) ->
-    %% Standard trick to try to make sure all
-    %% data sent to the tcp port is really delivered to the
-    %% peer application before tcp port is closed so that the peer will
-    %% get the correct TLS alert message and not only a transport close.
-    %% Will return when other side has closed or after timout millisec
-    %% e.g. we do not want to hang if something goes wrong
-    %% with the network but we want to maximise the odds that
-    %% peer application gets all data sent on the tcp connection.
-    close({close, ?DEFAULT_TIMEOUT}, Socket, Transport, ConnectionStates, Check);
-close(downgrade, _,_,_,_) ->
-    ok;
-%% Other
-close(_, Socket, Transport, _,_) -> 
-    Transport:close(Socket).
-
-convert_state(#state{ssl_options = Options} = State, up, "5.3.5", "5.3.6") ->
-    State#state{ssl_options = convert_options_partial_chain(Options, up)};
-convert_state(#state{ssl_options = Options} = State, down, "5.3.6", "5.3.5") ->
-    State#state{ssl_options = convert_options_partial_chain(Options, down)}.
+encode_change_cipher(#change_cipher_spec{}, Version, ConnectionStates) ->
+    tls_record:encode_change_cipher_spec(Version, ConnectionStates).
 
-convert_options_partial_chain(Options, up) ->
-    {Head, Tail} = lists:split(5, tuple_to_list(Options)),
-    list_to_tuple(Head ++ [{partial_chain, fun(_) -> unknown_ca end}] ++ Tail);
-convert_options_partial_chain(Options, down) ->
-    list_to_tuple(proplists:delete(partial_chain, tuple_to_list(Options))).
+decode_alerts(Bin) ->
+    ssl_alert:decode(Bin).
 
-gen_handshake(GenConnection, StateName, Type, Event, 
+gen_handshake(StateName, Type, Event, 
 	      #state{negotiated_version = Version} = State) ->
-    try GenConnection:StateName(Type, Event, State, ?MODULE) of
+    try ssl_connection:StateName(Type, Event, State, ?MODULE) of
 	Result ->
 	    Result
     catch 
diff --git a/lib/ssl/src/tls_handshake.erl b/lib/ssl/src/tls_handshake.erl
index b54540393a..8817418fb0 100644
--- a/lib/ssl/src/tls_handshake.erl
+++ b/lib/ssl/src/tls_handshake.erl
@@ -32,13 +32,19 @@
 -include("ssl_cipher.hrl").
 -include_lib("public_key/include/public_key.hrl").
 
--export([client_hello/8, hello/4,
-	 get_tls_handshake/4, encode_handshake/2, decode_handshake/4]).
+%% Handshake handling
+-export([client_hello/8, hello/4]).
+
+%% Handshake encoding
+-export([encode_handshake/2]).
+
+%% Handshake decodeing
+-export([get_tls_handshake/4, decode_handshake/4]).
 
 -type tls_handshake() :: #client_hello{} | ssl_handshake:ssl_handshake().
 
 %%====================================================================
-%% Internal application API
+%% Handshake handling
 %%====================================================================
 %%--------------------------------------------------------------------
 -spec client_hello(host(), inet:port_number(), ssl_record:connection_states(),
@@ -54,18 +60,14 @@ client_hello(Host, Port, ConnectionStates,
 			 } = SslOpts,
 	     Cache, CacheCb, Renegotiation, OwnCert) ->
     Version = tls_record:highest_protocol_version(Versions),
-    #{security_parameters := SecParams} = ssl_record:pending_connection_state(ConnectionStates, read),
+    #{security_parameters := SecParams} = 
+        ssl_record:pending_connection_state(ConnectionStates, read),
     AvailableCipherSuites = ssl_handshake:available_suites(UserSuites, Version),     
     Extensions = ssl_handshake:client_hello_extensions(Version, 
 						       AvailableCipherSuites,
-						       SslOpts, ConnectionStates, Renegotiation),
-    CipherSuites = 
-	case Fallback of
-	    true ->
-	        [?TLS_FALLBACK_SCSV | ssl_handshake:cipher_suites(AvailableCipherSuites, Renegotiation)];
-	    false ->
-		ssl_handshake:cipher_suites(AvailableCipherSuites, Renegotiation)
-	end,
+						       SslOpts, ConnectionStates, 
+                                                       Renegotiation),
+    CipherSuites = ssl_handshake:cipher_suites(AvailableCipherSuites, Renegotiation, Fallback),
     Id = ssl_session:client_id({Host, Port, SslOpts}, Cache, CacheCb, OwnCert),    
     #client_hello{session_id = Id,
 		  client_version = Version,
@@ -85,8 +87,8 @@ client_hello(Host, Port, ConnectionStates,
 		    ssl_record:connection_states(), alpn | npn, binary() | undefined}|
 		   {tls_record:tls_version(), {resumed | new, #session{}}, 
 		    ssl_record:connection_states(), binary() | undefined, 
-		    #hello_extensions{}, {ssl_cipher:hash(), ssl_cipher:sign_algo()} | undefined} |
-		   #alert{}.
+		    #hello_extensions{}, {ssl_cipher:hash(), ssl_cipher:sign_algo()} | 
+                    undefined} | #alert{}.
 %%
 %% Description: Handles a received hello message
 %%--------------------------------------------------------------------
@@ -99,7 +101,8 @@ hello(#server_hello{server_version = Version, random = Random,
     case tls_record:is_acceptable_version(Version, SupportedVersions) of
 	true ->
 	    handle_server_hello_extensions(Version, SessionId, Random, CipherSuite,
-					   Compression, HelloExt, SslOpt, ConnectionStates0, Renegotiation);
+					   Compression, HelloExt, SslOpt, 
+                                           ConnectionStates0, Renegotiation);
 	false ->
 	    ?ALERT_REC(?FATAL, ?PROTOCOL_VERSION)
     end;
@@ -127,18 +130,29 @@ hello(#client_hello{client_version = ClientVersion,
 	    ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE, malformed_handshake_data)
     end.  
 
+
+%%--------------------------------------------------------------------
+%%% Handshake encodeing
+%%--------------------------------------------------------------------
+
 %%--------------------------------------------------------------------
 -spec encode_handshake(tls_handshake(), tls_record:tls_version()) -> iolist().
 %%     
 %% Description: Encode a handshake packet
-%%--------------------------------------------------------------------x
+%%--------------------------------------------------------------------
 encode_handshake(Package, Version) ->
     {MsgType, Bin} = enc_handshake(Package, Version),
     Len = byte_size(Bin),
     [MsgType, ?uint24(Len), Bin].
 
+
+%%--------------------------------------------------------------------
+%%% Handshake decodeing
+%%--------------------------------------------------------------------
+
 %%--------------------------------------------------------------------
--spec get_tls_handshake(tls_record:tls_version(), binary(), binary() | iolist(), #ssl_options{}) ->
+-spec get_tls_handshake(tls_record:tls_version(), binary(), binary() | iolist(), 
+                        #ssl_options{}) ->
      {[tls_handshake()], binary()}.
 %%
 %% Description: Given buffered and new data from ssl_record, collects
@@ -153,37 +167,45 @@ get_tls_handshake(Version, Data, Buffer, Options) ->
 %%--------------------------------------------------------------------
 %%% Internal functions
 %%--------------------------------------------------------------------
-handle_client_hello(Version, #client_hello{session_id = SugesstedId,
-					   cipher_suites = CipherSuites,
-					   compression_methods = Compressions,
-					   random = Random,
-					   extensions = #hello_extensions{elliptic_curves = Curves,
-									  signature_algs = ClientHashSigns} = HelloExt},
+handle_client_hello(Version, 
+                    #client_hello{session_id = SugesstedId,
+                                  cipher_suites = CipherSuites,
+                                  compression_methods = Compressions,
+                                  random = Random,
+                                  extensions = 
+                                      #hello_extensions{elliptic_curves = Curves,
+                                                        signature_algs = ClientHashSigns} 
+                                  = HelloExt},
 		    #ssl_options{versions = Versions,
 				 signature_algs = SupportedHashSigns,
 				 eccs = SupportedECCs,
 				 honor_ecc_order = ECCOrder} = SslOpts,
-		    {Port, Session0, Cache, CacheCb, ConnectionStates0, Cert, _}, Renegotiation) ->
+		    {Port, Session0, Cache, CacheCb, ConnectionStates0, Cert, _}, 
+                    Renegotiation) ->
     case tls_record:is_acceptable_version(Version, Versions) of
 	true ->
 	    AvailableHashSigns = ssl_handshake:available_signature_algs(
 				   ClientHashSigns, SupportedHashSigns, Cert, Version),
 	    ECCCurve = ssl_handshake:select_curve(Curves, SupportedECCs, ECCOrder),
 	    {Type, #session{cipher_suite = CipherSuite} = Session1}
-		= ssl_handshake:select_session(SugesstedId, CipherSuites, AvailableHashSigns, Compressions,
-					       Port, Session0#session{ecc = ECCCurve}, Version,
-					       SslOpts, Cache, CacheCb, Cert),
+		= ssl_handshake:select_session(SugesstedId, CipherSuites, 
+                                               AvailableHashSigns, Compressions,
+					       Port, Session0#session{ecc = ECCCurve}, 
+                                               Version, SslOpts, Cache, CacheCb, Cert),
 	    case CipherSuite of 
 		no_suite ->
                     ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY, no_suitable_ciphers);
 		_ ->
-		    {KeyExAlg,_,_,_} = ssl_cipher:suite_definition(CipherSuite),
-		    case ssl_handshake:select_hashsign(ClientHashSigns, Cert, KeyExAlg, SupportedHashSigns, Version) of
+		    #{key_exchange := KeyExAlg} = ssl_cipher:suite_definition(CipherSuite),
+		    case ssl_handshake:select_hashsign(ClientHashSigns, Cert, KeyExAlg, 
+                                                       SupportedHashSigns, Version) of
 			#alert{} = Alert ->
 			    Alert;
 			HashSign ->
-			    handle_client_hello_extensions(Version, Type, Random, CipherSuites, HelloExt,
-							   SslOpts, Session1, ConnectionStates0,
+			    handle_client_hello_extensions(Version, Type, Random, 
+                                                           CipherSuites, HelloExt,
+							   SslOpts, Session1, 
+                                                           ConnectionStates0,
 							   Renegotiation, HashSign)
 		    end
 	    end;
@@ -191,6 +213,59 @@ handle_client_hello(Version, #client_hello{session_id = SugesstedId,
 	    ?ALERT_REC(?FATAL, ?PROTOCOL_VERSION)
     end.
 
+handle_client_hello_extensions(Version, Type, Random, CipherSuites,
+                               HelloExt, SslOpts, Session0, ConnectionStates0, 
+                               Renegotiation, HashSign) ->
+    try ssl_handshake:handle_client_hello_extensions(tls_record, Random, CipherSuites,
+						     HelloExt, Version, SslOpts,
+						     Session0, ConnectionStates0, 
+                                                     Renegotiation) of
+	#alert{} = Alert ->
+	    Alert;
+	{Session, ConnectionStates, Protocol, ServerHelloExt} ->
+	    {Version, {Type, Session}, ConnectionStates, Protocol, 
+             ServerHelloExt, HashSign}
+    catch throw:Alert ->
+	    Alert
+    end.
+
+
+handle_server_hello_extensions(Version, SessionId, Random, CipherSuite,
+			Compression, HelloExt, SslOpt, ConnectionStates0, Renegotiation) ->
+    case ssl_handshake:handle_server_hello_extensions(tls_record, Random, CipherSuite,
+						      Compression, HelloExt, Version,
+						      SslOpt, ConnectionStates0, 
+                                                      Renegotiation) of
+	#alert{} = Alert ->
+	    Alert;
+	{ConnectionStates, ProtoExt, Protocol} ->
+	    {Version, SessionId, ConnectionStates, ProtoExt, Protocol}
+    end.
+%%--------------------------------------------------------------------
+enc_handshake(#hello_request{}, _Version) ->
+    {?HELLO_REQUEST, <<>>};
+enc_handshake(#client_hello{client_version = {Major, Minor},
+		     random = Random,
+		     session_id = SessionID,
+		     cipher_suites = CipherSuites,
+		     compression_methods = CompMethods, 
+		     extensions = HelloExtensions}, _Version) ->
+    SIDLength = byte_size(SessionID),
+    BinCompMethods = list_to_binary(CompMethods),
+    CmLength = byte_size(BinCompMethods),
+    BinCipherSuites = list_to_binary(CipherSuites),
+    CsLength = byte_size(BinCipherSuites),
+    ExtensionsBin = ssl_handshake:encode_hello_extensions(HelloExtensions),
+
+    {?CLIENT_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
+		      ?BYTE(SIDLength), SessionID/binary,
+		      ?UINT16(CsLength), BinCipherSuites/binary,
+		      ?BYTE(CmLength), BinCompMethods/binary, ExtensionsBin/binary>>};
+
+enc_handshake(HandshakeMsg, Version) ->
+    ssl_handshake:encode_handshake(HandshakeMsg, Version).
+
+%%--------------------------------------------------------------------
 get_tls_handshake_aux(Version, <<?BYTE(Type), ?UINT24(Length),
 				 Body:Length/binary,Rest/binary>>, 
                       #ssl_options{v2_hello_compatible = V2Hello} = Opts,  Acc) ->
@@ -219,11 +294,12 @@ decode_handshake(_Version, ?CLIENT_HELLO, Bin, true) ->
 decode_handshake(_Version, ?CLIENT_HELLO, Bin, false) ->
     decode_hello(Bin);
 
-decode_handshake(_Version, ?CLIENT_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
-					    ?BYTE(SID_length), Session_ID:SID_length/binary,
-					    ?UINT16(Cs_length), CipherSuites:Cs_length/binary,
-					    ?BYTE(Cm_length), Comp_methods:Cm_length/binary,
-					    Extensions/binary>>, _) ->
+decode_handshake(_Version, ?CLIENT_HELLO, 
+                 <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
+                   ?BYTE(SID_length), Session_ID:SID_length/binary,
+                   ?UINT16(Cs_length), CipherSuites:Cs_length/binary,
+                   ?BYTE(Cm_length), Comp_methods:Cm_length/binary,
+                   Extensions/binary>>, _) ->
     
     DecodedExtensions = ssl_handshake:decode_hello_extensions({client, Extensions}),
 
@@ -268,53 +344,3 @@ decode_v2_hello(<<?BYTE(Major), ?BYTE(Minor),
 		  compression_methods = [?NULL],
 		  extensions = #hello_extensions{}
 		 }.
-
-enc_handshake(#hello_request{}, _Version) ->
-    {?HELLO_REQUEST, <<>>};
-enc_handshake(#client_hello{client_version = {Major, Minor},
-		     random = Random,
-		     session_id = SessionID,
-		     cipher_suites = CipherSuites,
-		     compression_methods = CompMethods, 
-		     extensions = HelloExtensions}, _Version) ->
-    SIDLength = byte_size(SessionID),
-    BinCompMethods = list_to_binary(CompMethods),
-    CmLength = byte_size(BinCompMethods),
-    BinCipherSuites = list_to_binary(CipherSuites),
-    CsLength = byte_size(BinCipherSuites),
-    ExtensionsBin = ssl_handshake:encode_hello_extensions(HelloExtensions),
-
-    {?CLIENT_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
-		      ?BYTE(SIDLength), SessionID/binary,
-		      ?UINT16(CsLength), BinCipherSuites/binary,
-		      ?BYTE(CmLength), BinCompMethods/binary, ExtensionsBin/binary>>};
-
-enc_handshake(HandshakeMsg, Version) ->
-    ssl_handshake:encode_handshake(HandshakeMsg, Version).
-
-
-handle_client_hello_extensions(Version, Type, Random, CipherSuites,
-			HelloExt, SslOpts, Session0, ConnectionStates0, Renegotiation, HashSign) ->
-    try ssl_handshake:handle_client_hello_extensions(tls_record, Random, CipherSuites,
-						     HelloExt, Version, SslOpts,
-						     Session0, ConnectionStates0, Renegotiation) of
-	#alert{} = Alert ->
-	    Alert;
-	{Session, ConnectionStates, Protocol, ServerHelloExt} ->
-	    {Version, {Type, Session}, ConnectionStates, Protocol, ServerHelloExt, HashSign}
-    catch throw:Alert ->
-	    Alert
-    end.
-
-
-handle_server_hello_extensions(Version, SessionId, Random, CipherSuite,
-			Compression, HelloExt, SslOpt, ConnectionStates0, Renegotiation) ->
-    case ssl_handshake:handle_server_hello_extensions(tls_record, Random, CipherSuite,
-						      Compression, HelloExt, Version,
-						      SslOpt, ConnectionStates0, Renegotiation) of
-	#alert{} = Alert ->
-	    Alert;
-	{ConnectionStates, ProtoExt, Protocol} ->
-	    {Version, SessionId, ConnectionStates, ProtoExt, Protocol}
-    end.
-
diff --git a/lib/ssl/src/tls_record.erl b/lib/ssl/src/tls_record.erl
index 4ac6cdc6b5..ab179c1bf0 100644
--- a/lib/ssl/src/tls_record.erl
+++ b/lib/ssl/src/tls_record.erl
@@ -39,15 +39,15 @@
 	 encode_change_cipher_spec/2, encode_data/3]).
 -export([encode_plain_text/4]).
 
+%% Decoding
+-export([decode_cipher_text/3]).
+
 %% Protocol version handling
 -export([protocol_version/1,  lowest_protocol_version/1, lowest_protocol_version/2,
 	 highest_protocol_version/1, highest_protocol_version/2,
 	 is_higher/2, supported_protocol_versions/0,
 	 is_acceptable_version/1, is_acceptable_version/2, hello_version/2]).
 
-%% Decoding
--export([decode_cipher_text/3]).
-
 -export_type([tls_version/0, tls_atom_version/0]).
 
 -type tls_version()       :: ssl_record:ssl_version().
@@ -56,13 +56,12 @@
 -compile(inline).
 
 %%====================================================================
-%% Internal application API
+%% Handling of incoming data
 %%====================================================================
 %%--------------------------------------------------------------------
 -spec init_connection_states(client | server, one_n_minus_one | zero_n | disabled) ->
  				    ssl_record:connection_states().
-%% %
-						%
+%% 
 %% Description: Creates a connection_states record with appropriate
 %% values for the initial SSL connection setup.
 %%--------------------------------------------------------------------
@@ -87,6 +86,10 @@ get_tls_records(Data, <<>>) ->
 get_tls_records(Data, Buffer) ->
     get_tls_records_aux(list_to_binary([Buffer, Data]), []).
 
+%%====================================================================
+%% Encoding
+%%====================================================================
+
 %%--------------------------------------------------------------------
 -spec encode_handshake(iolist(), tls_version(), ssl_record:connection_states()) ->
 			      {iolist(), ssl_record:connection_states()}.
@@ -141,6 +144,74 @@ encode_data(Frag, Version,
     Data = split_bin(Frag, ?MAX_PLAIN_TEXT_LENGTH, Version, BCA, BeastMitigation),
     encode_iolist(?APPLICATION_DATA, Data, Version, ConnectionStates).
 
+%%====================================================================
+%% Decoding
+%%====================================================================
+
+%%--------------------------------------------------------------------
+-spec decode_cipher_text(#ssl_tls{}, ssl_record:connection_states(), boolean()) ->
+				{#ssl_tls{}, ssl_record:connection_states()}| #alert{}.
+%%
+%% Description: Decode cipher text
+%%--------------------------------------------------------------------
+decode_cipher_text(#ssl_tls{type = Type, version = Version,
+			    fragment = CipherFragment} = CipherText,
+		   #{current_read :=
+			 #{compression_state := CompressionS0,
+			   sequence_number := Seq,
+                           cipher_state := CipherS0,
+			   security_parameters :=
+			       #security_parameters{
+				  cipher_type = ?AEAD,
+                                  bulk_cipher_algorithm =
+                                      BulkCipherAlgo,
+				  compression_algorithm = CompAlg}
+			  } = ReadState0} = ConnnectionStates0, _) ->
+    AAD = calc_aad(Type, Version, ReadState0),
+    case ssl_cipher:decipher_aead(BulkCipherAlgo, CipherS0, Seq, AAD, CipherFragment, Version) of
+	{PlainFragment, CipherS1} ->
+	    {Plain, CompressionS1} = ssl_record:uncompress(CompAlg,
+							   PlainFragment, CompressionS0),
+	    ConnnectionStates = ConnnectionStates0#{
+				  current_read => ReadState0#{
+                                                    cipher_state => CipherS1,
+                                                    sequence_number => Seq + 1,
+                                                    compression_state => CompressionS1}},
+	    {CipherText#ssl_tls{fragment = Plain}, ConnnectionStates};
+	#alert{} = Alert ->
+	    Alert
+    end;
+
+decode_cipher_text(#ssl_tls{type = Type, version = Version,
+			    fragment = CipherFragment} = CipherText,
+		   #{current_read :=
+			 #{compression_state := CompressionS0,
+			   sequence_number := Seq,
+			   security_parameters :=
+			       #security_parameters{compression_algorithm = CompAlg}
+			  } = ReadState0} = ConnnectionStates0, PaddingCheck) ->
+    case ssl_record:decipher(Version, CipherFragment, ReadState0, PaddingCheck) of
+	{PlainFragment, Mac, ReadState1} ->
+	    MacHash = ssl_cipher:calc_mac_hash(Type, Version, PlainFragment, ReadState1),
+	    case ssl_record:is_correct_mac(Mac, MacHash) of
+		true ->
+		    {Plain, CompressionS1} = ssl_record:uncompress(CompAlg,
+								   PlainFragment, CompressionS0),
+		    ConnnectionStates = ConnnectionStates0#{
+					  current_read => ReadState1#{
+							    sequence_number => Seq + 1,
+							    compression_state => CompressionS1}},
+		    {CipherText#ssl_tls{fragment = Plain}, ConnnectionStates};
+		false ->
+			?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
+	    end;
+	    #alert{} = Alert ->
+	    Alert
+    end.
+
+%%====================================================================
+%% Protocol version handling
+%%====================================================================
 
 %%--------------------------------------------------------------------
 -spec protocol_version(tls_atom_version() | tls_version()) -> 
@@ -278,11 +349,6 @@ supported_protocol_versions([_|_] = Vsns) ->
 	    end
     end.
 
-%%--------------------------------------------------------------------
-%%     
-%% Description: ssl version 2 is not acceptable security risks are too big.
-%% 
-%%--------------------------------------------------------------------
 -spec is_acceptable_version(tls_version()) -> boolean().
 is_acceptable_version({N,_}) 
   when N >= ?LOWEST_MAJOR_SUPPORTED_VERSION ->
@@ -302,6 +368,7 @@ hello_version(Version, _) when Version >= {3, 3} ->
     Version;
 hello_version(_, Versions) ->
     lowest_protocol_version(Versions).
+
 %%--------------------------------------------------------------------
 %%% Internal functions
 %%--------------------------------------------------------------------
@@ -376,37 +443,17 @@ get_tls_records_aux(Data, Acc) ->
 	false ->
 	    ?ALERT_REC(?FATAL, ?UNEXPECTED_MESSAGE)
 	end.
-
+%%--------------------------------------------------------------------
 encode_plain_text(Type, Version, Data, #{current_write := Write0} = ConnectionStates) ->
     {CipherFragment, Write1} = do_encode_plain_text(Type, Version, Data, Write0),
     {CipherText, Write} = encode_tls_cipher_text(Type, Version, CipherFragment, Write1),
     {CipherText, ConnectionStates#{current_write => Write}}.
 
-lowest_list_protocol_version(Ver, []) ->
-    Ver;
-lowest_list_protocol_version(Ver1,  [Ver2 | Rest]) ->
-    lowest_list_protocol_version(lowest_protocol_version(Ver1, Ver2), Rest).
-
-highest_list_protocol_version(Ver, []) ->
-    Ver;
-highest_list_protocol_version(Ver1,  [Ver2 | Rest]) ->
-    highest_list_protocol_version(highest_protocol_version(Ver1, Ver2), Rest).
-
 encode_tls_cipher_text(Type, {MajVer, MinVer}, Fragment, #{sequence_number := Seq} = Write) ->
     Length = erlang:iolist_size(Fragment),
     {[<<?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer), ?UINT16(Length)>>, Fragment],
      Write#{sequence_number => Seq +1}}.
 
-highest_protocol_version() ->
-    highest_protocol_version(supported_protocol_versions()).
-
-lowest_protocol_version() ->
-    lowest_protocol_version(supported_protocol_versions()).
-
-sufficient_tlsv1_2_crypto_support() ->
-    CryptoSupport = crypto:supports(),
-    proplists:get_bool(sha256, proplists:get_value(hashs, CryptoSupport)).
-
 encode_iolist(Type, Data, Version, ConnectionStates0) ->
     {ConnectionStates, EncodedMsg} =
         lists:foldl(fun(Text, {CS0, Encoded}) ->
@@ -415,6 +462,31 @@ encode_iolist(Type, Data, Version, ConnectionStates0) ->
 			    {CS1, [Enc | Encoded]}
 		    end, {ConnectionStates0, []}, Data),
     {lists:reverse(EncodedMsg), ConnectionStates}.
+%%--------------------------------------------------------------------
+do_encode_plain_text(Type, Version, Data, #{compression_state := CompS0,
+					 security_parameters :=
+					     #security_parameters{
+						cipher_type = ?AEAD,
+						compression_algorithm = CompAlg}
+					} = WriteState0) ->
+    {Comp, CompS1} = ssl_record:compress(CompAlg, Data, CompS0),
+    WriteState1 = WriteState0#{compression_state => CompS1},
+    AAD = calc_aad(Type, Version, WriteState1),
+    ssl_record:cipher_aead(Version, Comp, WriteState1, AAD);
+do_encode_plain_text(Type, Version, Data, #{compression_state := CompS0,
+					 security_parameters :=
+					     #security_parameters{compression_algorithm = CompAlg}
+					}= WriteState0) ->
+    {Comp, CompS1} = ssl_record:compress(CompAlg, Data, CompS0),
+    WriteState1 = WriteState0#{compression_state => CompS1},
+    MacHash = ssl_cipher:calc_mac_hash(Type, Version, Comp, WriteState1),
+    ssl_record:cipher(Version, Comp, WriteState1, MacHash);
+do_encode_plain_text(_,_,_,CS) ->
+    exit({cs, CS}).
+%%--------------------------------------------------------------------
+calc_aad(Type, {MajVer, MinVer},
+	 #{sequence_number := SeqNo}) ->
+    <<?UINT64(SeqNo), ?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer)>>.
 
 %% 1/n-1 splitting countermeasure Rizzo/Duong-Beast, RC4 chiphers are
 %% not vulnerable to this attack.
@@ -440,89 +512,25 @@ do_split_bin(Bin, ChunkSize, Acc) ->
         _ ->
             lists:reverse(Acc, [Bin])
     end.
-
 %%--------------------------------------------------------------------
--spec decode_cipher_text(#ssl_tls{}, ssl_record:connection_states(), boolean()) ->
-				{#ssl_tls{}, ssl_record:connection_states()}| #alert{}.
-%%
-%% Description: Decode cipher text
-%%--------------------------------------------------------------------
-decode_cipher_text(#ssl_tls{type = Type, version = Version,
-			    fragment = CipherFragment} = CipherText,
-		   #{current_read :=
-			 #{compression_state := CompressionS0,
-			   sequence_number := Seq,
-                           cipher_state := CipherS0,
-			   security_parameters :=
-			       #security_parameters{
-				  cipher_type = ?AEAD,
-                                  bulk_cipher_algorithm =
-                                      BulkCipherAlgo,
-				  compression_algorithm = CompAlg}
-			  } = ReadState0} = ConnnectionStates0, _) ->
-    AAD = calc_aad(Type, Version, ReadState0),
-    case ssl_cipher:decipher_aead(BulkCipherAlgo, CipherS0, Seq, AAD, CipherFragment, Version) of
-	{PlainFragment, CipherS1} ->
-	    {Plain, CompressionS1} = ssl_record:uncompress(CompAlg,
-							   PlainFragment, CompressionS0),
-	    ConnnectionStates = ConnnectionStates0#{
-				  current_read => ReadState0#{
-                                                    cipher_state => CipherS1,
-                                                    sequence_number => Seq + 1,
-                                                    compression_state => CompressionS1}},
-	    {CipherText#ssl_tls{fragment = Plain}, ConnnectionStates};
-	#alert{} = Alert ->
-	    Alert
-    end;
+lowest_list_protocol_version(Ver, []) ->
+    Ver;
+lowest_list_protocol_version(Ver1,  [Ver2 | Rest]) ->
+    lowest_list_protocol_version(lowest_protocol_version(Ver1, Ver2), Rest).
 
-decode_cipher_text(#ssl_tls{type = Type, version = Version,
-			    fragment = CipherFragment} = CipherText,
-		   #{current_read :=
-			 #{compression_state := CompressionS0,
-			   sequence_number := Seq,
-			   security_parameters :=
-			       #security_parameters{compression_algorithm = CompAlg}
-			  } = ReadState0} = ConnnectionStates0, PaddingCheck) ->
-    case ssl_record:decipher(Version, CipherFragment, ReadState0, PaddingCheck) of
-	{PlainFragment, Mac, ReadState1} ->
-	    MacHash = ssl_cipher:calc_mac_hash(Type, Version, PlainFragment, ReadState1),
-	    case ssl_record:is_correct_mac(Mac, MacHash) of
-		true ->
-		    {Plain, CompressionS1} = ssl_record:uncompress(CompAlg,
-								   PlainFragment, CompressionS0),
-		    ConnnectionStates = ConnnectionStates0#{
-					  current_read => ReadState1#{
-							    sequence_number => Seq + 1,
-							    compression_state => CompressionS1}},
-		    {CipherText#ssl_tls{fragment = Plain}, ConnnectionStates};
-		false ->
-			?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
-	    end;
-	    #alert{} = Alert ->
-	    Alert
-    end.
+highest_list_protocol_version(Ver, []) ->
+    Ver;
+highest_list_protocol_version(Ver1,  [Ver2 | Rest]) ->
+    highest_list_protocol_version(highest_protocol_version(Ver1, Ver2), Rest).
+
+highest_protocol_version() ->
+    highest_protocol_version(supported_protocol_versions()).
+
+lowest_protocol_version() ->
+    lowest_protocol_version(supported_protocol_versions()).
+
+sufficient_tlsv1_2_crypto_support() ->
+    CryptoSupport = crypto:supports(),
+    proplists:get_bool(sha256, proplists:get_value(hashs, CryptoSupport)).
 
-do_encode_plain_text(Type, Version, Data, #{compression_state := CompS0,
-					 security_parameters :=
-					     #security_parameters{
-						cipher_type = ?AEAD,
-						compression_algorithm = CompAlg}
-					} = WriteState0) ->
-    {Comp, CompS1} = ssl_record:compress(CompAlg, Data, CompS0),
-    WriteState1 = WriteState0#{compression_state => CompS1},
-    AAD = calc_aad(Type, Version, WriteState1),
-    ssl_record:cipher_aead(Version, Comp, WriteState1, AAD);
-do_encode_plain_text(Type, Version, Data, #{compression_state := CompS0,
-					 security_parameters :=
-					     #security_parameters{compression_algorithm = CompAlg}
-					}= WriteState0) ->
-    {Comp, CompS1} = ssl_record:compress(CompAlg, Data, CompS0),
-    WriteState1 = WriteState0#{compression_state => CompS1},
-    MacHash = ssl_cipher:calc_mac_hash(Type, Version, Comp, WriteState1),
-    ssl_record:cipher(Version, Comp, WriteState1, MacHash);
-do_encode_plain_text(_,_,_,CS) ->
-    exit({cs, CS}).
 
-calc_aad(Type, {MajVer, MinVer},
-	 #{sequence_number := SeqNo}) ->
-    <<?UINT64(SeqNo), ?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer)>>.
diff --git a/lib/ssl/src/tls_socket.erl b/lib/ssl/src/tls_socket.erl
index e76d9c100a..453a908401 100644
--- a/lib/ssl/src/tls_socket.erl
+++ b/lib/ssl/src/tls_socket.erl
@@ -27,7 +27,7 @@
 -export([send/3, listen/3, accept/3, socket/5, connect/4, upgrade/3,
 	 setopts/3, getopts/3, getstat/3, peername/2, sockname/2, port/2]).
 -export([split_options/1, get_socket_opts/3]).
--export([emulated_options/0, internal_inet_values/0, default_inet_values/0,
+-export([emulated_options/0, emulated_options/1, internal_inet_values/0, default_inet_values/0,
 	 init/1, start_link/3, terminate/2, inherit_tracker/3, 
 	 emulated_socket_options/2, get_emulated_opts/1, 
 	 set_emulated_opts/2, get_all_opts/1, handle_call/3, handle_cast/2,
@@ -170,6 +170,9 @@ port(Transport, Socket) ->
 emulated_options() ->
     [mode, packet, active, header, packet_size].
 
+emulated_options(Opts) ->
+      emulated_options(Opts, internal_inet_values(), default_inet_values()).
+
 internal_inet_values() ->
     [{packet_size,0}, {packet, 0}, {header, 0}, {active, false}, {mode,binary}].
 
@@ -328,3 +331,41 @@ emulated_socket_options(InetValues, #socket_options{
        packet = proplists:get_value(packet, InetValues, Packet),
        packet_size = proplists:get_value(packet_size, InetValues, Size)
       }.
+
+emulated_options([{mode, Value} = Opt |Opts], Inet, Emulated) ->
+    validate_inet_option(mode, Value),
+    emulated_options(Opts, Inet, [Opt | proplists:delete(mode, Emulated)]);
+emulated_options([{header, Value} = Opt | Opts], Inet, Emulated) ->
+    validate_inet_option(header, Value),
+    emulated_options(Opts, Inet,  [Opt | proplists:delete(header, Emulated)]);
+emulated_options([{active, Value} = Opt |Opts], Inet, Emulated) ->
+    validate_inet_option(active, Value),
+    emulated_options(Opts, Inet, [Opt | proplists:delete(active, Emulated)]);
+emulated_options([{packet, Value} = Opt |Opts], Inet, Emulated) ->
+    validate_inet_option(packet, Value),
+    emulated_options(Opts, Inet, [Opt | proplists:delete(packet, Emulated)]);
+emulated_options([{packet_size, Value} = Opt | Opts], Inet, Emulated) ->
+    validate_inet_option(packet_size, Value),
+    emulated_options(Opts, Inet, [Opt | proplists:delete(packet_size, Emulated)]);
+emulated_options([Opt|Opts], Inet, Emulated) ->
+    emulated_options(Opts, [Opt|Inet], Emulated);
+emulated_options([], Inet,Emulated) ->
+    {Inet, Emulated}.
+
+validate_inet_option(mode, Value)
+  when Value =/= list, Value =/= binary ->
+    throw({error, {options, {mode,Value}}});
+validate_inet_option(packet, Value)
+  when not (is_atom(Value) orelse is_integer(Value)) ->
+    throw({error, {options, {packet,Value}}});
+validate_inet_option(packet_size, Value)
+  when not is_integer(Value) ->
+    throw({error, {options, {packet_size,Value}}});
+validate_inet_option(header, Value)
+  when not is_integer(Value) ->
+    throw({error, {options, {header,Value}}});
+validate_inet_option(active, Value)
+  when Value =/= true, Value =/= false, Value =/= once ->
+    throw({error, {options, {active,Value}}});
+validate_inet_option(_, _) ->
+    ok.
diff --git a/lib/ssl/test/Makefile b/lib/ssl/test/Makefile
index c7e2f402af..9347b56f39 100644
--- a/lib/ssl/test/Makefile
+++ b/lib/ssl/test/Makefile
@@ -37,6 +37,8 @@ VSN=$(GS_VSN)
 
 MODULES = \
 	ssl_test_lib \
+	ssl_bench_test_lib \
+	ssl_dist_test_lib \
 	ssl_alpn_handshake_SUITE \
 	ssl_basic_SUITE \
 	ssl_bench_SUITE \
@@ -44,6 +46,8 @@ MODULES = \
 	ssl_certificate_verify_SUITE\
 	ssl_crl_SUITE\
 	ssl_dist_SUITE \
+	ssl_dist_bench_SUITE \
+	ssl_engine_SUITE\
 	ssl_handshake_SUITE \
 	ssl_npn_hello_SUITE \
 	ssl_npn_handshake_SUITE \
@@ -61,7 +65,8 @@ MODULES = \
 
 ERL_FILES = $(MODULES:%=%.erl)
 
-HRL_FILES =
+HRL_FILES = \
+	ssl_dist_test_lib.hrl
 
 HRL_FILES_SRC = \
 	ssl_api.hrl\
diff --git a/lib/ssl/test/ssl.spec b/lib/ssl/test/ssl.spec
index 0ad94e22bc..17b66aef40 100644
--- a/lib/ssl/test/ssl.spec
+++ b/lib/ssl/test/ssl.spec
@@ -3,3 +3,6 @@
     ssl_bench_SUITE, [setup_sequential, setup_concurrent, payload_simple,
 	use_pem_cache, bypass_pem_cache],
     "Benchmarks run separately"}.
+{skip_suites, "../ssl_test",
+     [ssl_dist_bench_SUITE],
+     "Benchmarks run separately"}.
diff --git a/lib/ssl/test/ssl_bench.spec b/lib/ssl/test/ssl_bench.spec
index d2f75b4203..8b746c5ca9 100644
--- a/lib/ssl/test/ssl_bench.spec
+++ b/lib/ssl/test/ssl_bench.spec
@@ -1 +1 @@
-{suites,"../ssl_test",[ssl_bench_SUITE]}.
+{suites,"../ssl_test",[ssl_bench_SUITE, ssl_dist_bench_SUITE]}.
diff --git a/lib/ssl/test/ssl_bench_SUITE.erl b/lib/ssl/test/ssl_bench_SUITE.erl
index ae2928b1c3..3fe6338d69 100644
--- a/lib/ssl/test/ssl_bench_SUITE.erl
+++ b/lib/ssl/test/ssl_bench_SUITE.erl
@@ -40,11 +40,11 @@ end_per_group(_GroupName, _Config) ->
     ok.
 
 init_per_suite(Config) ->
-    try
-	Server = setup(ssl, node()),
-	[{server_node, Server}|Config]
-    catch _:_ ->
-	    {skipped, "Benchmark machines only"}
+    case node() of
+        nonode@nohost ->
+            {skipped, "Node not distributed"};
+        _ ->
+            [{server_node, ssl_bench_test_lib:setup(perf_server)}|Config]
     end.
 
 end_per_suite(_Config) ->
@@ -132,10 +132,10 @@ bypass_pem_cache(_Config) ->
 
 
 ssl() ->
-    test(ssl, ?COUNT, node()).
+    test(ssl, ?COUNT).
 
-test(Type, Count, Host) ->
-    Server = setup(Type, Host),
+test(Type, Count) ->
+    Server = ssl_bench_test_lib:setup(perf_server),
     (do_test(Type, setup_connection, Count * 20, 1, Server)),
     (do_test(Type, setup_connection, Count, 100, Server)),
     (do_test(Type, payload, Count*300, 10, Server)),
@@ -294,47 +294,6 @@ msg() ->
       "asdlkjsafsdfoierwlejsdlkfjsdf">>.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-setup(_Type, nonode@nohost) ->
-    exit(dist_not_enabled);
-setup(Type, _This) ->
-    Host = case os:getenv(?remote_host) of
-	       false ->
-		   {ok, This} = inet:gethostname(),
-		   This;
-	       RemHost ->
-		   RemHost
-	   end,
-    Node = list_to_atom("perf_server@" ++ Host),
-    SlaveArgs = case init:get_argument(pa) of
-	       {ok, PaPaths} ->
-		   lists:append([" -pa " ++ P || [P] <- PaPaths]);
-	       _ -> []
-	   end,
-    %% io:format("Slave args: ~p~n",[SlaveArgs]),
-    Prog =
-	case os:find_executable("erl") of
-	    false -> "erl";
-	    P -> P
-	end,
-    io:format("Prog = ~p~n", [Prog]),
-
-    case net_adm:ping(Node) of
-	pong -> ok;
-	pang ->
-	    {ok, Node} = slave:start(Host, perf_server, SlaveArgs, no_link, Prog)
-    end,
-    Path = code:get_path(),
-    true = rpc:call(Node, code, set_path, [Path]),
-    ok = rpc:call(Node, ?MODULE, setup_server, [Type, node()]),
-    io:format("Client (~p) using ~s~n",[node(), code:which(ssl)]),
-    (Node =:= node()) andalso restrict_schedulers(client),
-    Node.
-
-setup_server(_Type, ClientNode) ->
-    (ClientNode =:= node()) andalso restrict_schedulers(server),
-    io:format("Server (~p) using ~s~n",[node(), code:which(ssl)]),
-    ok.
-
 
 ensure_all_started(App, Ack) ->
     case application:start(App) of
@@ -358,13 +317,6 @@ setup_server_init(Type, Tc, Loop, PC) ->
     unlink(Pid),
     Res.
 
-restrict_schedulers(Type) ->
-    %% We expect this to run on 8 core machine
-    Extra0 = 1,
-    Extra =  if (Type =:= server) -> -Extra0; true -> Extra0 end,
-    Scheds = erlang:system_info(schedulers),
-    erlang:system_flag(schedulers_online, (Scheds div 2) + Extra).
-
 tc(Fun, Mod, Line) ->
     case timer:tc(Fun) of
 	{_,{'EXIT',Reason}} ->
diff --git a/lib/ssl/test/ssl_bench_test_lib.erl b/lib/ssl/test/ssl_bench_test_lib.erl
new file mode 100644
index 0000000000..e5cbb911bd
--- /dev/null
+++ b/lib/ssl/test/ssl_bench_test_lib.erl
@@ -0,0 +1,75 @@
+%%%-------------------------------------------------------------------
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(ssl_bench_test_lib).
+
+%% API
+-export([setup/1]).
+
+%% Internal exports
+-export([setup_server/1]).
+
+-define(remote_host, "NETMARKS_REMOTE_HOST").
+
+setup(Name) ->
+    Host = case os:getenv(?remote_host) of
+	       false ->
+		   {ok, This} = inet:gethostname(),
+		   This;
+	       RemHost ->
+		   RemHost
+	   end,
+    Node = list_to_atom(atom_to_list(Name) ++ "@" ++ Host),
+    SlaveArgs = case init:get_argument(pa) of
+	       {ok, PaPaths} ->
+		   lists:append([" -pa " ++ P || [P] <- PaPaths]);
+	       _ -> []
+	   end,
+    %% io:format("Slave args: ~p~n",[SlaveArgs]),
+    Prog =
+	case os:find_executable("erl") of
+	    false -> "erl";
+	    P -> P
+	end,
+    io:format("Prog = ~p~n", [Prog]),
+
+    case net_adm:ping(Node) of
+	pong -> ok;
+	pang ->
+	    {ok, Node} =
+                slave:start(Host, Name, SlaveArgs, no_link, Prog)
+    end,
+    Path = code:get_path(),
+    true = rpc:call(Node, code, set_path, [Path]),
+    ok = rpc:call(Node, ?MODULE, setup_server, [node()]),
+    io:format("Client (~p) using ~s~n",[node(), code:which(ssl)]),
+    (Node =:= node()) andalso restrict_schedulers(client),
+    Node.
+
+setup_server(ClientNode) ->
+    (ClientNode =:= node()) andalso restrict_schedulers(server),
+    io:format("Server (~p) using ~s~n",[node(), code:which(ssl)]),
+    ok.
+
+restrict_schedulers(Type) ->
+    %% We expect this to run on 8 core machine
+    Extra0 = 1,
+    Extra =  if (Type =:= server) -> -Extra0; true -> Extra0 end,
+    Scheds = erlang:system_info(schedulers),
+    erlang:system_flag(schedulers_online, (Scheds div 2) + Extra).
diff --git a/lib/ssl/test/ssl_dist_SUITE.erl b/lib/ssl/test/ssl_dist_SUITE.erl
index 8740e8c8f0..c822a52d1f 100644
--- a/lib/ssl/test/ssl_dist_SUITE.erl
+++ b/lib/ssl/test/ssl_dist_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2007-2016. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2017. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -22,6 +22,7 @@
 
 -include_lib("common_test/include/ct.hrl").
 -include_lib("public_key/include/public_key.hrl").
+-include("ssl_dist_test_lib.hrl").
 
 %% Note: This directive should only be used in test suites.
 -compile(export_all).
@@ -30,12 +31,12 @@
 
 -define(AWAIT_SSL_NODE_UP_TIMEOUT, 30000).
 
--record(node_handle,
-	{connection_handler,
-	 socket,
-	 name,
-	 nodename}
-       ).
+-import(ssl_dist_test_lib,
+        [tstsrvr_format/2, send_to_tstcntrl/1,
+         apply_on_ssl_node/4, apply_on_ssl_node/2,
+         stop_ssl_node/1]).
+start_ssl_node_name(Name, Args) ->
+    ssl_dist_test_lib:start_ssl_node(Name, Args).
 
 %%--------------------------------------------------------------------
 %% Common Test interface functions -----------------------------------
@@ -140,11 +141,14 @@ basic_test(NH1, NH2, _) ->
 		  apply_on_ssl_node(
 		    NH1,
 		    fun () ->
-			    tstsrvr_format("Hi from ~p!~n", [node()]),
-			    send_to_tstcntrl({Ref, self()}),
+			    tstsrvr_format(
+                              "Hi from ~p!~n", [node()]),
+			    send_to_tstcntrl(
+                              {Ref, self()}),
 			    receive
 				{From, ping} ->
-				    tstsrvr_format("Received ping ~p!~n", [node()]),
+				    tstsrvr_format(
+                                      "Received ping ~p!~n", [node()]),
 				    From ! {self(), pong}
 			    end
 		    end)
@@ -154,7 +158,8 @@ basic_test(NH1, NH2, _) ->
 	     ok = apply_on_ssl_node(
 		    NH2,
 		    fun () ->
-			    tstsrvr_format("Hi from ~p!~n", [node()]),
+			    tstsrvr_format(
+                              "Hi from ~p!~n", [node()]),
 			    SslPid ! {self(), ping},
 			    receive
 				{SslPid, pong} ->
@@ -183,7 +188,8 @@ payload_test(NH1, NH2, _) ->
 		  apply_on_ssl_node(
 		    NH1,
 		    fun () ->
-			    send_to_tstcntrl({Ref, self()}),
+			    send_to_tstcntrl(
+                              {Ref, self()}),
 			    receive
 				{From, Msg} ->
 				    From ! {self(), Msg}
@@ -616,12 +622,6 @@ gen_dist_test(Test, Config) ->
 %% ssl_node side api
 %%
 
-tstsrvr_format(Fmt, ArgList) ->
-    send_to_tstsrvr({format, Fmt, ArgList}).
-
-send_to_tstcntrl(Message) ->
-    send_to_tstsrvr({message, Message}).
-
 try_setting_priority(TestFun, Config) ->
     Prio = 1,
     case gen_udp:open(0, [{priority,Prio}]) of
@@ -653,44 +653,6 @@ inet_ports() ->
 %% test_server side api
 %%
 
-apply_on_ssl_node(Node, M, F, A) when is_atom(M), is_atom(F), is_list(A) ->
-    Ref = make_ref(),
-    send_to_ssl_node(Node, {apply, self(), Ref, M, F, A}),
-    receive
-	{Ref, Result} ->
-	    Result
-    end.
-
-apply_on_ssl_node(Node, Fun) when is_function(Fun, 0) ->
-    Ref = make_ref(),
-    send_to_ssl_node(Node, {apply, self(), Ref, Fun}),
-    receive
-	{Ref, Result} ->
-	    Result
-    end.
-
-stop_ssl_node(#node_handle{connection_handler = Handler,
-			   socket = Socket,
-			   name = Name}) ->
-    ?t:format("Trying to stop ssl node ~s.~n", [Name]),
-    Mon = erlang:monitor(process, Handler),
-    unlink(Handler),
-    case gen_tcp:send(Socket, term_to_binary(stop)) of
-	ok ->
-	    receive
-		{'DOWN', Mon, process, Handler, Reason} ->
-		    case Reason of
-			normal ->
-			    ok;
-			_ -> 
-			    ct:pal("Down  ~p ~n", [Reason])
-		    end
-	    end;
-	Error ->
-	    erlang:demonitor(Mon, [flush]),
-	    ct:pal("Warning  ~p ~n", [Error])
-    end.
-
 start_ssl_node(Config) ->
     start_ssl_node(Config, "").
 
@@ -698,29 +660,8 @@ start_ssl_node(Config, XArgs) ->
     Name = mk_node_name(Config),
     SSL = proplists:get_value(ssl_opts, Config),
     SSLDistOpts = setup_dist_opts(Config),
-    start_ssl_node_raw(Name, SSL ++ " " ++ SSLDistOpts ++ XArgs).
-
-start_ssl_node_raw(Name, Args) ->
-    {ok, LSock} = gen_tcp:listen(0,
-				 [binary, {packet, 4}, {active, false}]),
-    {ok, ListenPort} = inet:port(LSock),
-    CmdLine = mk_node_cmdline(ListenPort, Name, Args),
-    ?t:format("Attempting to start ssl node ~ts: ~ts~n", [Name, CmdLine]),
-    case open_port({spawn, CmdLine}, []) of
-	Port when is_port(Port) ->
-	    unlink(Port),
-	    erlang:port_close(Port),
-	    case await_ssl_node_up(Name, LSock) of
-		#node_handle{} = NodeHandle ->
-		    ?t:format("Ssl node ~s started.~n", [Name]),
-		    NodeName = list_to_atom(Name ++ "@" ++ host_name()),
-		    NodeHandle#node_handle{nodename = NodeName};
-		Error ->
-		    exit({failed_to_start_node, Name, Error})
-	    end;
-	Error ->
-	    exit({failed_to_start_node, Name, Error})
-    end.
+    start_ssl_node_name(
+      Name, SSL ++ " " ++ SSLDistOpts ++ XArgs).
 
 cache_crls_on_ssl_nodes(PrivDir, CANames, NHs) ->
     [begin
@@ -739,11 +680,6 @@ cache_crls_on_ssl_nodes(PrivDir, CANames, NHs) ->
 %% command line creation
 %%
 
-host_name() ->
-    [$@ | Host] = lists:dropwhile(fun ($@) -> false; (_) -> true end,
-				  atom_to_list(node())),
-    Host.
-
 mk_node_name(Config) ->
     N = erlang:unique_integer([positive]),
     Case = proplists:get_value(testcase, Config),
@@ -753,225 +689,6 @@ mk_node_name(Config) ->
 	++ "_"
 	++ integer_to_list(N).
 
-mk_node_cmdline(ListenPort, Name, Args) ->
-    Static = "-detached -noinput",
-    Pa = filename:dirname(code:which(?MODULE)),
-    Prog = case catch init:get_argument(progname) of
-	       {ok,[[P]]} -> P;
-	       _ -> exit(no_progname_argument_found)
-	   end,
-    NameSw = case net_kernel:longnames() of
-		 false -> "-sname ";
-		 _ -> "-name "
-	     end,
-    {ok, Pwd} = file:get_cwd(),
-    "\"" ++ Prog ++ "\" "
-	++ Static ++ " "
-	++ NameSw ++ " " ++ Name ++ " "
-	++ "-pa " ++ Pa ++ " "
-	++ "-run application start crypto -run application start public_key "
-	++ "-eval 'net_kernel:verbose(1)' "
-	++ "-run " ++ atom_to_list(?MODULE) ++ " cnct2tstsrvr "
-	++ host_name() ++ " "
-	++ integer_to_list(ListenPort) ++ " "
-	++ Args ++ " "
-	++ "-env ERL_CRASH_DUMP " ++ Pwd ++ "/erl_crash_dump." ++ Name ++ " "
-	++ "-kernel error_logger \"{file,\\\"" ++ Pwd ++ "/error_log." ++ Name ++ "\\\"}\" "
-	++ "-setcookie " ++ atom_to_list(erlang:get_cookie()).
-
-%%
-%% Connection handler test_server side
-%%
-
-await_ssl_node_up(Name, LSock) ->
-    case gen_tcp:accept(LSock, ?AWAIT_SSL_NODE_UP_TIMEOUT) of
-	timeout ->
-	    gen_tcp:close(LSock),
-	    ?t:format("Timeout waiting for ssl node ~s to come up~n",
-		      [Name]),
-	    timeout;
-	{ok, Socket} ->
-	    gen_tcp:close(LSock),
-	    case gen_tcp:recv(Socket, 0) of
-		{ok, Bin} ->
-		    check_ssl_node_up(Socket, Name, Bin);
-		{error, closed} ->
-		    gen_tcp:close(Socket),
-		    exit({lost_connection_with_ssl_node_before_up, Name})
-	    end;
-	{error, Error} ->
-	    gen_tcp:close(LSock),
-	    exit({accept_failed, Error})
-    end.
-
-check_ssl_node_up(Socket, Name, Bin) ->
-    case catch binary_to_term(Bin) of
-	{'EXIT', _} ->
-	    gen_tcp:close(Socket),
-	    exit({bad_data_received_from_ssl_node, Name, Bin});
-	{ssl_node_up, NodeName} ->
-	    case list_to_atom(Name++"@"++host_name()) of
-		NodeName ->
-		    Parent = self(),
-		    Go = make_ref(),
-		    %% Spawn connection handler on test server side
-		    Pid = spawn_link(
-			    fun () ->
-				    receive Go -> ok end,
-				    tstsrvr_con_loop(Name, Socket, Parent)
-			    end),
-		    ok = gen_tcp:controlling_process(Socket, Pid),
-		    Pid ! Go,
-		    #node_handle{connection_handler = Pid,
-				 socket = Socket,
-				 name = Name};
-		_ ->
-		    exit({unexpected_ssl_node_connected, NodeName})
-	    end;
-	Msg ->
-	    exit({unexpected_msg_instead_of_ssl_node_up, Name, Msg})
-    end.
-
-send_to_ssl_node(#node_handle{connection_handler = Hndlr}, Term) ->
-    Hndlr ! {relay_to_ssl_node, term_to_binary(Term)},
-    ok.
-
-tstsrvr_con_loop(Name, Socket, Parent) ->
-    inet:setopts(Socket,[{active,once}]),
-    receive
-	{relay_to_ssl_node, Data} when is_binary(Data) ->
-	    case gen_tcp:send(Socket, Data) of
-		ok ->
-		    ok;
-		_Error ->
-		    gen_tcp:close(Socket),
-		    exit({failed_to_relay_data_to_ssl_node, Name, Data})
-	    end;
-	{tcp, Socket, Bin} ->
-	    case catch binary_to_term(Bin) of
-		{'EXIT', _} ->
-		    gen_tcp:close(Socket),
-		    exit({bad_data_received_from_ssl_node, Name, Bin});
-		{format, FmtStr, ArgList} ->
-		    ?t:format(FmtStr, ArgList);
-		{message, Msg} ->
-		    ?t:format("Got message ~p", [Msg]),
-		    Parent ! Msg;
-		{apply_res, To, Ref, Res} ->
-		    To ! {Ref, Res};
-		bye ->
-		    ?t:format("Ssl node ~s stopped.~n", [Name]),
-		    gen_tcp:close(Socket),
-		    exit(normal);
-		Unknown ->
-		    exit({unexpected_message_from_ssl_node, Name, Unknown})
-	    end;
-	{tcp_closed, Socket} ->
-	    gen_tcp:close(Socket),
-	    exit({lost_connection_with_ssl_node, Name})
-    end,
-    tstsrvr_con_loop(Name, Socket, Parent).
-
-%%
-%% Connection handler ssl_node side
-%%
-
-% cnct2tstsrvr() is called via command line arg -run ...
-cnct2tstsrvr([Host, Port]) when is_list(Host), is_list(Port) ->
-    %% Spawn connection handler on ssl node side
-    ConnHandler
-	= spawn(fun () ->
-			case catch gen_tcp:connect(Host,
-						   list_to_integer(Port),
-						   [binary,
-						    {packet, 4},
-						    {active, false}]) of
-			    {ok, Socket} ->
-				notify_ssl_node_up(Socket),
-				ets:new(test_server_info,
-					[set,
-					 public,
-					 named_table,
-					 {keypos, 1}]),
-				ets:insert(test_server_info,
-					   {test_server_handler, self()}),
-				ssl_node_con_loop(Socket);
-			    Error ->
-				halt("Failed to connect to test server " ++
-					 lists:flatten(io_lib:format("Host:~p ~n Port:~p~n Error:~p~n",
-								     [Host, Port, Error])))
-			end
-		end),
-    spawn(fun () ->
-		  Mon = erlang:monitor(process, ConnHandler),
-		  receive
-		      {'DOWN', Mon, process, ConnHandler, Reason} ->
-			  receive after 1000 -> ok end,
-			  halt("test server connection handler terminated: " ++
-				   lists:flatten(io_lib:format("~p", [Reason])))
-		  end
-	  end).
-
-notify_ssl_node_up(Socket) ->
-    case catch gen_tcp:send(Socket,
-			    term_to_binary({ssl_node_up, node()})) of
-	ok -> ok;
-	_ -> halt("Failed to notify test server that I'm up")
-    end.
-
-send_to_tstsrvr(Term) ->
-    case catch ets:lookup_element(test_server_info, test_server_handler, 2) of
-	Hndlr when is_pid(Hndlr) ->
-	    Hndlr ! {relay_to_test_server, term_to_binary(Term)}, ok;
-	_ ->
-	    receive after 200 -> ok end,
-	    send_to_tstsrvr(Term)
-    end.
-
-ssl_node_con_loop(Socket) ->
-    inet:setopts(Socket,[{active,once}]),
-    receive
-	{relay_to_test_server, Data} when is_binary(Data) ->
-	    case gen_tcp:send(Socket, Data) of
-		ok ->
-		    ok;
-		_Error ->
-		    gen_tcp:close(Socket),
-		    halt("Failed to relay data to test server")
-	    end;
-	{tcp, Socket, Bin} ->
-	    case catch binary_to_term(Bin) of
-		{'EXIT', _} ->
-		    gen_tcp:close(Socket),
-		    halt("test server sent me bad data");
-		{apply, From, Ref, M, F, A} ->
-		    spawn_link(
-		      fun () ->
-			      send_to_tstsrvr({apply_res,
-					       From,
-					       Ref,
-					       (catch apply(M, F, A))})
-			  end);
-		{apply, From, Ref, Fun} ->
-		    spawn_link(fun () ->
-				       send_to_tstsrvr({apply_res,
-							From,
-							Ref,
-							(catch Fun())})
-			       end);
-		stop ->
-		    gen_tcp:send(Socket, term_to_binary(bye)),
-		    gen_tcp:close(Socket),
-		    init:stop(),
-		    receive after infinity -> ok end;
-		_Unknown ->
-		    halt("test server sent me an unexpected message")
-	    end;
-	{tcp_closed, Socket} ->
-	    halt("Lost connection to test server")
-    end,
-    ssl_node_con_loop(Socket).
-
 %%
 %% Setup ssl dist info
 %%
diff --git a/lib/ssl/test/ssl_dist_bench_SUITE.erl b/lib/ssl/test/ssl_dist_bench_SUITE.erl
new file mode 100644
index 0000000000..4d27564319
--- /dev/null
+++ b/lib/ssl/test/ssl_dist_bench_SUITE.erl
@@ -0,0 +1,481 @@
+%%%-------------------------------------------------------------------
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(ssl_dist_bench_SUITE).
+
+-include_lib("common_test/include/ct_event.hrl").
+-include_lib("public_key/include/public_key.hrl").
+
+%% CT meta
+-export([suite/0, all/0, groups/0,
+         init_per_suite/1, end_per_suite/1,
+         init_per_group/2, end_per_group/2,
+         init_per_testcase/2, end_per_testcase/2]).
+
+%% Test cases
+-export(
+   [setup/1,
+    roundtrip/1,
+    throughput_1024/1,
+    throughput_4096/1,
+    throughput_16384/1,
+    throughput_65536/1,
+    throughput_262144/1,
+    throughput_1048576/1]).
+
+%% Debug
+-export([payload/1]).
+
+%%%-------------------------------------------------------------------
+
+suite() -> [{ct_hooks, [{ts_install_cth, [{nodenames, 2}]}]}].
+
+all() -> [{group, ssl}, {group, plain}].
+
+groups() ->
+    [{ssl, all_groups()},
+     {plain, all_groups()},
+     %%
+     {setup, [{repeat, 1}], [setup]},
+     {roundtrip, [{repeat, 1}], [roundtrip]},
+     {throughput, [{repeat, 1}],
+      [throughput_1024,
+       throughput_4096,
+       throughput_16384,
+       throughput_65536,
+       throughput_262144,
+       throughput_1048576]}].
+
+all_groups() ->
+    [{group, setup},
+     {group, roundtrip},
+     {group, throughput}].
+
+init_per_suite(Config) ->
+    Digest = sha1,
+    ECCurve = secp521r1,
+    TLSVersion = 'tlsv1.2',
+    TLSCipher = {ecdhe_ecdsa,aes_128_cbc,sha256,sha256},
+    %%
+    Node = node(),
+    try
+        Node =/= nonode@nohost orelse
+            throw({skipped,"Node not distributed"}),
+        {supported, SSLVersions} =
+            lists:keyfind(supported, 1, ssl:versions()),
+        lists:member(TLSVersion, SSLVersions) orelse
+            throw(
+              {skipped,
+               "SSL does not support " ++ term_to_string(TLSVersion)}),
+        lists:member(ECCurve, ssl:eccs(TLSVersion)) orelse
+            throw(
+              {skipped,
+               "SSL does not support " ++ term_to_string(ECCurve)}),
+        lists:member(TLSCipher, ssl:cipher_suites()) orelse
+            throw(
+              {skipped,
+               "SSL does not support " ++ term_to_string(TLSCipher)})
+    of
+        _ ->
+            PrivDir = proplists:get_value(priv_dir, Config),
+            %%
+            [_, HostA] = string:split(atom_to_list(Node), "@"),
+            NodeAName = ?MODULE_STRING ++ "_node_a",
+            NodeAString = NodeAName ++ "@" ++ HostA,
+            NodeAConfFile = filename:join(PrivDir, NodeAString ++ ".conf"),
+            NodeA = list_to_atom(NodeAString),
+            %%
+            ServerNode = ssl_bench_test_lib:setup(dist_server),
+            [_, HostB] = string:split(atom_to_list(ServerNode), "@"),
+            NodeBName = ?MODULE_STRING ++ "_node_b",
+            NodeBString = NodeBName ++ "@" ++ HostB,
+            NodeBConfFile = filename:join(PrivDir, NodeBString ++ ".conf"),
+            NodeB = list_to_atom(NodeBString),
+            %%
+            CertOptions =
+                [{digest, Digest},
+                 {key, {namedCurve, ECCurve}}],
+            RootCert =
+                public_key:pkix_test_root_cert(
+                  ?MODULE_STRING ++ " ROOT CA", CertOptions),
+            SSLConf =
+                [{verify, verify_peer},
+                 {versions, [TLSVersion]},
+                 {ciphers, [TLSCipher]}],
+            %%
+            write_node_conf(
+              NodeAConfFile, NodeA,
+              [{fail_if_no_peer_cert, true} | SSLConf], SSLConf,
+              CertOptions, RootCert),
+            write_node_conf(
+              NodeBConfFile, NodeB,
+              [{fail_if_no_peer_cert, true} | SSLConf], SSLConf,
+              CertOptions, RootCert),
+            %%
+            [{node_a_name, NodeAName},
+             {node_a, NodeA},
+             {node_a_dist_args,
+              "-proto_dist inet_tls "
+              "-ssl_dist_optfile " ++ NodeAConfFile ++ " "},
+             {node_b_name, NodeBName},
+             {node_b, NodeB},
+             {node_b_dist_args,
+              "-proto_dist inet_tls "
+              "-ssl_dist_optfile " ++ NodeBConfFile ++ " "},
+             {server_node, ServerNode}
+             |Config]
+    catch
+        throw:Result ->
+            Result
+    end.
+
+end_per_suite(Config) ->
+    ServerNode = proplists:get_value(server_node, Config),
+    slave:stop(ServerNode).
+
+init_per_group(ssl, Config) ->
+    [{ssl_dist, true}, {ssl_dist_prefix, "SSL"}|Config];
+init_per_group(plain, Config) ->
+    [{ssl_dist, false}, {ssl_dist_prefix, "Plain"}|Config];
+init_per_group(_GroupName, Config) ->
+    Config.
+
+end_per_group(_GroupName, _Config) ->
+    ok.
+
+init_per_testcase(_Func, Conf) ->
+    Conf.
+
+end_per_testcase(_Func, _Conf) ->
+    ok.
+
+-define(COUNT, 400).
+
+%%%-------------------------------------------------------------------
+%%% CommonTest API helpers
+
+write_node_conf(
+  ConfFile, Node, ServerConf, ClientConf, CertOptions, RootCert) ->
+    Conf =
+        public_key:pkix_test_data(
+          #{root => RootCert,
+            peer =>
+                [{extensions,
+                  [#'Extension'{
+                      extnID = ?'id-ce-subjectAltName',
+                      extnValue = [{dNSName, atom_to_list(Node)}],
+                      critical = false}]} | CertOptions]}),
+    NodeConf =
+        [{server, ServerConf ++ Conf}, {client, ClientConf ++ Conf}],
+    {ok, Fd} = file:open(ConfFile, [write]),
+    ok = file:change_mode(ConfFile, 8#400),
+    io:format(Fd, "~p.~n", [NodeConf]),
+    ok = file:close(Fd).
+
+
+%%%-------------------------------------------------------------------
+%%% Test cases
+
+%%-----------------------
+%% Connection setup speed
+
+setup(Config) ->
+    run_nodepair_test(fun setup/5, Config).
+
+setup(A, B, Prefix, HA, HB) ->
+    Rounds = 10,
+    [] = ssl_apply(HA, erlang, nodes, []),
+    [] = ssl_apply(HB, erlang, nodes, []),
+    {SetupTime, CycleTime} =
+        ssl_apply(HA, fun () -> setup_runner(A, B, Rounds) end),
+    [] = ssl_apply(HA, erlang, nodes, []),
+    [] = ssl_apply(HB, erlang, nodes, []),
+    SetupSpeed = round((Rounds*1000000*1000) / SetupTime),
+    CycleSpeed = round((Rounds*1000000*1000) / CycleTime),
+    _ = report(Prefix++" Setup", SetupSpeed, "setups/1000s"),
+    report(Prefix++" Setup Cycle", CycleSpeed, "cycles/1000s").
+
+%% Runs on node A against rex in node B
+setup_runner(A, B, Rounds) ->
+    StartTime = start_time(),
+    SetupTime = setup_loop(A, B, 0, Rounds),
+    {microseconds(SetupTime), microseconds(elapsed_time(StartTime))}.
+
+setup_loop(_A, _B, T, 0) ->
+    T;
+setup_loop(A, B, T, N) ->
+    StartTime = start_time(),
+    [A] = rpc:block_call(B, erlang, nodes, []),
+    Time = elapsed_time(StartTime),
+    [B] = erlang:nodes(),
+    Mref = erlang:monitor(process, {rex,B}),
+    true = net_kernel:disconnect(B),
+    receive
+        {'DOWN',Mref,process,_,_} ->
+            [] = erlang:nodes(),
+            setup_loop(A, B, Time + T, N - 1)
+    end.
+
+
+%%----------------
+%% Roundtrip speed
+
+roundtrip(Config) ->
+    run_nodepair_test(fun roundtrip/5, Config).
+
+roundtrip(A, B, Prefix, HA, HB) ->
+    Rounds = 40000,
+    [] = ssl_apply(HA, erlang, nodes, []),
+    [] = ssl_apply(HB, erlang, nodes, []),
+    Time = ssl_apply(HA, fun () -> roundtrip_runner(A, B, Rounds) end),
+    [B] = ssl_apply(HA, erlang, nodes, []),
+    [A] = ssl_apply(HB, erlang, nodes, []),
+    Speed = round((Rounds*1000000) / Time),
+    report(Prefix++" Roundtrip", Speed, "pings/s").
+
+%% Runs on node A and spawns a server on node B
+roundtrip_runner(A, B, Rounds) ->
+    ClientPid = self(),
+    [A] = rpc:call(B, erlang, nodes, []),
+    ServerPid =
+        erlang:spawn(
+          B,
+          fun () -> roundtrip_server(ClientPid, Rounds) end),
+    ServerMon = erlang:monitor(process, ServerPid),
+    microseconds(
+      roundtrip_client(ServerPid, ServerMon, start_time(), Rounds)).
+
+roundtrip_server(_Pid, 0) ->
+    ok;
+roundtrip_server(Pid, N) ->
+    receive
+        N ->
+            Pid ! N,
+            roundtrip_server(Pid, N-1)
+    end.
+
+roundtrip_client(_Pid, Mon, StartTime, 0) ->
+    Time = elapsed_time(StartTime),
+    receive
+        {'DOWN', Mon, _, _, normal} ->
+            Time;
+        {'DOWN', Mon, _, _, Other} ->
+            exit(Other)
+    end;
+roundtrip_client(Pid, Mon, StartTime, N) ->
+    Pid ! N,
+    receive
+        N ->
+            roundtrip_client(Pid, Mon, StartTime, N - 1)
+    end.
+
+
+%%-----------------
+%% Throughput speed
+
+throughput_1024(Config) ->
+    run_nodepair_test(
+      fun (A, B, Prefix, HA, HB) ->
+              throughput(A, B, Prefix, HA, HB, 100000, 1024)
+      end, Config).
+
+throughput_4096(Config) ->
+    run_nodepair_test(
+      fun (A, B, Prefix, HA, HB) ->
+              throughput(A, B, Prefix, HA, HB, 50000, 4096)
+      end, Config).
+
+throughput_16384(Config) ->
+    run_nodepair_test(
+      fun (A, B, Prefix, HA, HB) ->
+              throughput(A, B, Prefix, HA, HB, 10000, 16384)
+      end, Config).
+
+throughput_65536(Config) ->
+    run_nodepair_test(
+      fun (A, B, Prefix, HA, HB) ->
+              throughput(A, B, Prefix, HA, HB, 2000, 65536)
+      end, Config).
+
+throughput_262144(Config) ->
+    run_nodepair_test(
+      fun (A, B, Prefix, HA, HB) ->
+              throughput(A, B, Prefix, HA, HB, 500, 262144)
+      end, Config).
+
+throughput_1048576(Config) ->
+    run_nodepair_test(
+      fun (A, B, Prefix, HA, HB) ->
+              throughput(A, B, Prefix, HA, HB, 200, 1048576)
+      end, Config).
+
+throughput(A, B, Prefix, HA, HB, Packets, Size) ->
+    [] = ssl_apply(HA, erlang, nodes, []),
+    [] = ssl_apply(HB, erlang, nodes, []),
+    Time =
+        ssl_apply(HA, fun () -> throughput_runner(A, B, Packets, Size) end),
+    [B] = ssl_apply(HA, erlang, nodes, []),
+    [A] = ssl_apply(HB, erlang, nodes, []),
+    Speed = round((Packets*Size*1000000) / (1024*Time)),
+    report(Prefix++" Throughput_"++integer_to_list(Size), Speed, "kB/s").
+
+%% Runs on node A and spawns a server on node B
+throughput_runner(A, B, Rounds, Size) ->
+    Payload = payload(Size),
+    ClientPid = self(),
+    [A] = rpc:call(B, erlang, nodes, []),
+    ServerPid =
+        erlang:spawn(
+          B,
+          fun () -> throughput_server(ClientPid, Rounds) end),
+    ServerMon = erlang:monitor(process, ServerPid),
+    microseconds(
+      throughput_client(
+        ServerPid, ServerMon, Payload, start_time(), Rounds)).
+
+throughput_server(_Pid, 0) ->
+    ok;
+throughput_server(Pid, N) ->
+    receive
+        [N|_] ->
+            throughput_server(Pid, N-1)
+    end.
+
+throughput_client(_Pid, Mon, _Payload, StartTime, 0) ->
+    receive
+        {'DOWN', Mon, _, _, normal} ->
+            elapsed_time(StartTime);
+        {'DOWN', Mon, _, _, Other} ->
+            exit(Other)
+    end;
+throughput_client(Pid, Mon, Payload, StartTime, N) ->
+    Pid ! [N|Payload],
+    throughput_client(Pid, Mon, Payload, StartTime, N - 1).
+
+%%%-------------------------------------------------------------------
+%%% Test cases helpers
+
+run_nodepair_test(TestFun, Config) ->
+    A = proplists:get_value(node_a, Config),
+    B = proplists:get_value(node_b, Config),
+    Prefix = proplists:get_value(ssl_dist_prefix, Config),
+    HA = start_ssl_node_a(Config),
+    HB = start_ssl_node_b(Config),
+    try TestFun(A, B, Prefix, HA, HB)
+    after
+        stop_ssl_node_a(HA),
+        stop_ssl_node_b(HB, Config),
+        ok
+    end.
+
+ssl_apply(Handle, M, F, Args) ->
+    case ssl_dist_test_lib:apply_on_ssl_node(Handle, M, F, Args) of
+        {'EXIT',Reason} ->
+            error(Reason);
+        Result ->
+            Result
+    end.
+
+ssl_apply(Handle, Fun) ->
+    case ssl_dist_test_lib:apply_on_ssl_node(Handle, Fun) of
+        {'EXIT',Reason} ->
+            error(Reason);
+        Result ->
+            Result
+    end.
+
+start_ssl_node_a(Config) ->
+    Name = proplists:get_value(node_a_name, Config),
+    Args = get_node_args(node_a_dist_args, Config),
+    ssl_dist_test_lib:start_ssl_node(Name, Args).
+
+start_ssl_node_b(Config) ->
+    Name = proplists:get_value(node_b_name, Config),
+    Args = get_node_args(node_b_dist_args, Config),
+    ServerNode = proplists:get_value(server_node, Config),
+    rpc:call(
+      ServerNode, ssl_dist_test_lib, start_ssl_node, [Name, Args]).
+
+stop_ssl_node_a(HA) ->
+    ssl_dist_test_lib:stop_ssl_node(HA).
+
+stop_ssl_node_b(HB, Config) ->
+    ServerNode = proplists:get_value(server_node, Config),
+    rpc:call(ServerNode, ssl_dist_test_lib, stop_ssl_node, [HB]).
+
+get_node_args(Tag, Config) ->
+    case proplists:get_value(ssl_dist, Config) of
+        true ->
+            proplists:get_value(Tag, Config);
+        false ->
+            ""
+    end.
+
+
+
+payload(Size) ->
+    iolist_to_binary(
+      [case Size bsr 8 of
+           0 ->
+               [];
+           Blocks ->
+               payload(Blocks, create_binary(256))
+       end | create_binary(Size band 255)]).
+%%
+payload(0, _) ->
+    [];
+payload(Blocks, Block) ->
+    Half = payload(Blocks bsr 1, Block),
+    [Half, Half |
+     if
+         Blocks band 1 =:= 1 ->
+             Block;
+         true ->
+             []
+     end].
+
+create_binary(Size) ->
+    create_binary(Size, <<>>).
+%%
+create_binary(0, Bin) ->
+    Bin;
+create_binary(Size, Bin) ->
+    NextSize = Size - 1,
+    create_binary(NextSize, <<Bin/binary, NextSize>>).
+
+start_time() ->
+    erlang:system_time().
+
+elapsed_time(StartTime) ->
+    erlang:system_time() - StartTime.
+
+microseconds(Time) ->
+    erlang:convert_time_unit(Time, native, microsecond).
+
+report(Name, Value, Unit) ->
+    ct:pal("~s: ~w ~s", [Name, Value, Unit]),
+    ct_event:notify(
+      #event{
+         name = benchmark_data,
+         data = [{value, Value}, {suite, "ssl_dist"}, {name, Name}]}),
+    {comment, term_to_string(Value) ++ " " ++ Unit}.
+
+term_to_string(Term) ->
+    unicode:characters_to_list(
+      io_lib:write(Term, [{encoding, unicode}])).
diff --git a/lib/ssl/test/ssl_dist_test_lib.erl b/lib/ssl/test/ssl_dist_test_lib.erl
new file mode 100644
index 0000000000..1b9c853fc4
--- /dev/null
+++ b/lib/ssl/test/ssl_dist_test_lib.erl
@@ -0,0 +1,343 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(ssl_dist_test_lib).
+
+-include_lib("common_test/include/ct.hrl").
+-include_lib("public_key/include/public_key.hrl").
+-include("ssl_dist_test_lib.hrl").
+
+-export([tstsrvr_format/2, send_to_tstcntrl/1]).
+-export([apply_on_ssl_node/4, apply_on_ssl_node/2]).
+-export([stop_ssl_node/1, start_ssl_node/2]).
+%%
+-export([cnct2tstsrvr/1]).
+
+-define(AWAIT_SSL_NODE_UP_TIMEOUT, 30000).
+
+
+
+%% ssl_node side api
+%%
+
+tstsrvr_format(Fmt, ArgList) ->
+    send_to_tstsrvr({format, Fmt, ArgList}).
+
+send_to_tstcntrl(Message) ->
+    send_to_tstsrvr({message, Message}).
+
+
+%%
+%% test_server side api
+%%
+
+apply_on_ssl_node(
+  #node_handle{connection_handler = Hndlr} = Node,
+  M, F, A) when is_atom(M), is_atom(F), is_list(A) ->
+    Ref = erlang:monitor(process, Hndlr),
+    apply_on_ssl_node(Node, Ref, {apply, self(), Ref, M, F, A}).
+
+apply_on_ssl_node(
+  #node_handle{connection_handler = Hndlr} = Node,
+  Fun) when is_function(Fun, 0) ->
+    Ref = erlang:monitor(process, Hndlr),
+    apply_on_ssl_node(Node, Ref, {apply, self(), Ref, Fun}).
+
+apply_on_ssl_node(Node, Ref, Msg) ->
+    send_to_ssl_node(Node, Msg),
+    receive
+        {'DOWN', Ref, process, Hndlr, Reason} ->
+            exit({handler_died, Hndlr, Reason});
+	{Ref, Result} ->
+	    Result
+    end.
+
+stop_ssl_node(#node_handle{connection_handler = Handler,
+			   socket = Socket,
+			   name = Name}) ->
+    ?t:format("Trying to stop ssl node ~s.~n", [Name]),
+    Mon = erlang:monitor(process, Handler),
+    unlink(Handler),
+    case gen_tcp:send(Socket, term_to_binary(stop)) of
+	ok ->
+	    receive
+		{'DOWN', Mon, process, Handler, Reason} ->
+		    case Reason of
+			normal ->
+			    ok;
+			_ ->
+			    ct:pal(
+                              "stop_ssl_node/1 ~s Down  ~p ~n",
+                              [Name,Reason])
+		    end
+	    end;
+	Error ->
+	    erlang:demonitor(Mon, [flush]),
+	    ct:pal("stop_ssl_node/1 ~s Warning ~p ~n", [Name,Error])
+    end.
+
+start_ssl_node(Name, Args) ->
+    {ok, LSock} = gen_tcp:listen(0,
+				 [binary, {packet, 4}, {active, false}]),
+    {ok, ListenPort} = inet:port(LSock),
+    CmdLine = mk_node_cmdline(ListenPort, Name, Args),
+    ?t:format("Attempting to start ssl node ~ts: ~ts~n", [Name, CmdLine]),
+    case open_port({spawn, CmdLine}, []) of
+	Port when is_port(Port) ->
+	    unlink(Port),
+	    erlang:port_close(Port),
+	    case await_ssl_node_up(Name, LSock) of
+		#node_handle{} = NodeHandle ->
+		    ?t:format("Ssl node ~s started.~n", [Name]),
+		    NodeName = list_to_atom(Name ++ "@" ++ host_name()),
+		    NodeHandle#node_handle{nodename = NodeName};
+		Error ->
+		    exit({failed_to_start_node, Name, Error})
+	    end;
+	Error ->
+	    exit({failed_to_start_node, Name, Error})
+    end.
+
+host_name() ->
+    [_, Host] = string:split(atom_to_list(node()), "@"),
+    %% [$@ | Host] = lists:dropwhile(fun ($@) -> false; (_) -> true end,
+    %%     			  atom_to_list(node())),
+    Host.
+
+mk_node_cmdline(ListenPort, Name, Args) ->
+    Static = "-detached -noinput",
+    Pa = filename:dirname(code:which(?MODULE)),
+    Prog = case catch init:get_argument(progname) of
+	       {ok,[[P]]} -> P;
+	       _ -> exit(no_progname_argument_found)
+	   end,
+    NameSw = case net_kernel:longnames() of
+		 false -> "-sname ";
+		 _ -> "-name "
+	     end,
+    {ok, Pwd} = file:get_cwd(),
+    "\"" ++ Prog ++ "\" "
+	++ Static ++ " "
+	++ NameSw ++ " " ++ Name ++ " "
+	++ "-pa " ++ Pa ++ " "
+	++ "-run application start crypto -run application start public_key "
+	++ "-eval 'net_kernel:verbose(1)' "
+	++ "-run " ++ atom_to_list(?MODULE) ++ " cnct2tstsrvr "
+	++ host_name() ++ " "
+	++ integer_to_list(ListenPort) ++ " "
+	++ Args ++ " "
+	++ "-env ERL_CRASH_DUMP " ++ Pwd ++ "/erl_crash_dump." ++ Name ++ " "
+	++ "-kernel error_logger \"{file,\\\"" ++ Pwd ++ "/error_log." ++ Name ++ "\\\"}\" "
+	++ "-setcookie " ++ atom_to_list(erlang:get_cookie()).
+
+%%
+%% Connection handler test_server side
+%%
+
+await_ssl_node_up(Name, LSock) ->
+    case gen_tcp:accept(LSock, ?AWAIT_SSL_NODE_UP_TIMEOUT) of
+	{ok, Socket} ->
+	    gen_tcp:close(LSock),
+	    case gen_tcp:recv(Socket, 0) of
+		{ok, Bin} ->
+		    check_ssl_node_up(Socket, Name, Bin);
+		{error, closed} ->
+		    gen_tcp:close(Socket),
+		    exit({lost_connection_with_ssl_node_before_up, Name})
+	    end;
+	{error, Error} ->
+	    gen_tcp:close(LSock),
+            ?t:format("Accept failed for ssl node ~s: ~p~n", [Name,Error]),
+	    exit({accept_failed, Error})
+    end.
+
+check_ssl_node_up(Socket, Name, Bin) ->
+    case catch binary_to_term(Bin) of
+	{'EXIT', _} ->
+	    gen_tcp:close(Socket),
+	    exit({bad_data_received_from_ssl_node, Name, Bin});
+	{ssl_node_up, NodeName} ->
+	    case list_to_atom(Name++"@"++host_name()) of
+		NodeName ->
+		    Parent = self(),
+		    Go = make_ref(),
+		    %% Spawn connection handler on test server side
+		    Pid = spawn_link(
+			    fun () ->
+				    receive Go -> ok end,
+                                    process_flag(trap_exit, true),
+				    tstsrvr_con_loop(Name, Socket, Parent)
+			    end),
+		    ok = gen_tcp:controlling_process(Socket, Pid),
+		    Pid ! Go,
+		    #node_handle{connection_handler = Pid,
+				 socket = Socket,
+				 name = Name};
+		_ ->
+		    exit({unexpected_ssl_node_connected, NodeName})
+	    end;
+	Msg ->
+	    exit({unexpected_msg_instead_of_ssl_node_up, Name, Msg})
+    end.
+
+send_to_ssl_node(#node_handle{connection_handler = Hndlr}, Term) ->
+    Hndlr ! {relay_to_ssl_node, term_to_binary(Term)},
+    ok.
+
+tstsrvr_con_loop(Name, Socket, Parent) ->
+    ok = inet:setopts(Socket,[{active,once}]),
+    receive
+	{relay_to_ssl_node, Data} when is_binary(Data) ->
+	    case gen_tcp:send(Socket, Data) of
+		ok ->
+		    ok;
+		_Error ->
+		    gen_tcp:close(Socket),
+		    exit({failed_to_relay_data_to_ssl_node, Name, Data})
+	    end;
+	{tcp, Socket, Bin} ->
+	    try binary_to_term(Bin) of
+		{format, FmtStr, ArgList} ->
+		    ?t:format(FmtStr, ArgList);
+		{message, Msg} ->
+		    ?t:format("Got message ~p", [Msg]),
+		    Parent ! Msg;
+		{apply_res, To, Ref, Res} ->
+		    To ! {Ref, Res};
+		bye ->
+                    {error, closed} = gen_tcp:recv(Socket, 0),
+		    ?t:format("Ssl node ~s stopped.~n", [Name]),
+		    gen_tcp:close(Socket),
+		    exit(normal);
+		Unknown ->
+		    exit({unexpected_message_from_ssl_node, Name, Unknown})
+            catch
+                error : _ ->
+		    gen_tcp:close(Socket),
+		    exit({bad_data_received_from_ssl_node, Name, Bin})
+	    end;
+	{tcp_closed, Socket} ->
+	    gen_tcp:close(Socket),
+	    exit({lost_connection_with_ssl_node, Name});
+        {'EXIT', Parent, Reason} ->
+            exit({'EXIT', parent, Reason});
+        Unknown ->
+            exit({unknown, Unknown})
+    end,
+    tstsrvr_con_loop(Name, Socket, Parent).
+
+%%
+%% Connection handler ssl_node side
+%%
+
+% cnct2tstsrvr() is called via command line arg -run ...
+cnct2tstsrvr([Host, Port]) when is_list(Host), is_list(Port) ->
+    %% Spawn connection handler on ssl node side
+    ConnHandler
+	= spawn(fun () ->
+			case catch gen_tcp:connect(Host,
+						   list_to_integer(Port),
+						   [binary,
+						    {packet, 4},
+						    {active, false}]) of
+			    {ok, Socket} ->
+				notify_ssl_node_up(Socket),
+				ets:new(test_server_info,
+					[set,
+					 public,
+					 named_table,
+					 {keypos, 1}]),
+				ets:insert(test_server_info,
+					   {test_server_handler, self()}),
+				ssl_node_con_loop(Socket);
+			    Error ->
+				halt("Failed to connect to test server " ++
+					 lists:flatten(io_lib:format("Host:~p ~n Port:~p~n Error:~p~n",
+								     [Host, Port, Error])))
+			end
+		end),
+    spawn(fun () ->
+		  Mon = erlang:monitor(process, ConnHandler),
+		  receive
+		      {'DOWN', Mon, process, ConnHandler, Reason} ->
+			  receive after 1000 -> ok end,
+			  halt("test server connection handler terminated: " ++
+				   lists:flatten(io_lib:format("~p", [Reason])))
+		  end
+	  end).
+
+notify_ssl_node_up(Socket) ->
+    case catch gen_tcp:send(Socket,
+			    term_to_binary({ssl_node_up, node()})) of
+	ok -> ok;
+	_ -> halt("Failed to notify test server that I'm up")
+    end.
+
+send_to_tstsrvr(Term) ->
+    case catch ets:lookup_element(test_server_info, test_server_handler, 2) of
+	Hndlr when is_pid(Hndlr) ->
+	    Hndlr ! {relay_to_test_server, term_to_binary(Term)}, ok;
+	_ ->
+	    receive after 200 -> ok end,
+	    send_to_tstsrvr(Term)
+    end.
+
+ssl_node_con_loop(Socket) ->
+    inet:setopts(Socket,[{active,once}]),
+    receive
+	{relay_to_test_server, Data} when is_binary(Data) ->
+	    case gen_tcp:send(Socket, Data) of
+		ok ->
+		    ok;
+		_Error ->
+		    gen_tcp:close(Socket),
+		    halt("Failed to relay data to test server")
+	    end;
+	{tcp, Socket, Bin} ->
+	    case catch binary_to_term(Bin) of
+		{'EXIT', _} ->
+		    gen_tcp:close(Socket),
+		    halt("test server sent me bad data");
+		{apply, From, Ref, M, F, A} ->
+		    spawn_link(
+		      fun () ->
+			      send_to_tstsrvr({apply_res,
+					       From,
+					       Ref,
+					       (catch apply(M, F, A))})
+			  end);
+		{apply, From, Ref, Fun} ->
+		    spawn_link(fun () ->
+				       send_to_tstsrvr({apply_res,
+							From,
+							Ref,
+							(catch Fun())})
+			       end);
+		stop ->
+		    gen_tcp:send(Socket, term_to_binary(bye)),
+		    init:stop(),
+		    receive after infinity -> ok end;
+		_Unknown ->
+		    halt("test server sent me an unexpected message")
+	    end;
+	{tcp_closed, Socket} ->
+	    halt("Lost connection to test server")
+    end,
+    ssl_node_con_loop(Socket).
diff --git a/lib/ssl/test/ssl_dist_test_lib.hrl b/lib/ssl/test/ssl_dist_test_lib.hrl
new file mode 100644
index 0000000000..86b9b37026
--- /dev/null
+++ b/lib/ssl/test/ssl_dist_test_lib.hrl
@@ -0,0 +1,26 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-record(node_handle,
+	{connection_handler,
+	 socket,
+	 name,
+	 nodename}
+       ).
diff --git a/lib/ssl/test/ssl_engine_SUITE.erl b/lib/ssl/test/ssl_engine_SUITE.erl
new file mode 100644
index 0000000000..bc221d35fd
--- /dev/null
+++ b/lib/ssl/test/ssl_engine_SUITE.erl
@@ -0,0 +1,142 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017-2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+-module(ssl_engine_SUITE).
+
+%% Note: This directive should only be used in test suites.
+-compile(export_all).
+
+-include_lib("common_test/include/ct.hrl").
+-include_lib("public_key/include/public_key.hrl").
+
+%%--------------------------------------------------------------------
+%% Common Test interface functions -----------------------------------
+%%--------------------------------------------------------------------
+all() ->
+    [
+     private_key
+    ].
+
+init_per_suite(Config) ->
+    catch crypto:stop(),
+    try crypto:start() of
+	ok ->
+            ssl_test_lib:clean_start(),
+            case crypto:get_test_engine() of
+                 {ok, EngineName} ->
+                    try crypto:engine_load(<<"dynamic">>,
+                                            [{<<"SO_PATH">>, EngineName},
+                                             <<"LOAD">>],
+                                            []) of
+                        {ok, Engine} ->
+                            [{engine, Engine} |Config];
+                        {error, Reason} ->
+                            ct:pal("Reason ~p", [Reason]),
+                            {skip, "No dynamic engine support"}
+                    catch error:notsup ->
+                            {skip, "No engine support in OpenSSL"}    
+                    end;
+                {error, notexist} ->
+                    {skip, "Test engine not found"}
+            end
+    catch _:_ ->
+	    {skip, "Crypto did not start"}
+    end.
+
+end_per_suite(Config) ->
+    Engine = proplists:get_value(engine, Config),
+    crypto:engine_unload(Engine),
+    ssl:stop(),
+    application:stop(crypto).
+
+
+init_per_testcase(_TestCase, Config) ->
+    ssl:stop(),
+    ssl:start(),
+    ssl_test_lib:ct_log_supported_protocol_versions(Config),
+    ct:timetrap({seconds, 10}),
+    Config.
+
+end_per_testcase(_TestCase, Config) ->     
+    Config.
+
+%%--------------------------------------------------------------------
+%% Test Cases --------------------------------------------------------
+%%--------------------------------------------------------------------
+
+private_key(Config) when is_list(Config) ->
+    ClientFileBase = filename:join([proplists:get_value(priv_dir, Config), "client_engine"]),
+    ServerFileBase = filename:join([proplists:get_value(priv_dir, Config), "server_engine"]),
+    #{server_config := ServerConf,
+      client_config := ClientConf} = GenCertData =
+        public_key:pkix_test_data(#{server_chain => 
+                                        #{root => [{key, ssl_test_lib:hardcode_rsa_key(1)}],
+                                          intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(2)}]],
+                                          peer => [{key, ssl_test_lib:hardcode_rsa_key(3)}
+                                                  ]},
+                                    client_chain => 
+                                        #{root => [{key, ssl_test_lib:hardcode_rsa_key(4)}],
+                                          intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(5)}]],
+                                          peer => [{key, ssl_test_lib:hardcode_rsa_key(6)}]}}),
+    [{server_config, FileServerConf}, 
+     {client_config, FileClientConf}] = 
+        x509_test:gen_pem_config_files(GenCertData, ClientFileBase, ServerFileBase),
+    
+    Engine = proplists:get_value(engine, Config),
+
+    ClientKey = engine_key(FileClientConf),
+    ServerKey = engine_key(FileServerConf),
+
+    EngineClientConf = [{key, #{algorithm => rsa,
+                                engine => Engine,
+                                key_id => ClientKey}} | proplists:delete(key, ClientConf)],
+    
+    EngineServerConf = [{key, #{algorithm => rsa,
+                                engine => Engine,
+                                key_id => ServerKey}} | proplists:delete(key, ServerConf)],
+    %% Test with engine
+    test_tls_connection(EngineServerConf, EngineClientConf, Config),
+    %% Test that sofware fallback is available
+    test_tls_connection(ServerConf, [{reuse_sessions, false} |ClientConf], Config).
+    
+engine_key(Conf) ->
+    FileStr = proplists:get_value(keyfile, Conf),
+    list_to_binary(FileStr).
+    
+
+test_tls_connection(ServerConf, ClientConf, Config) ->
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+    
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+					{from, self()},
+                                        {mfa, {ssl_test_lib, send_recv_result_active, []}},
+                                        {options, [{verify, verify_peer}
+                                                   | ServerConf]}]),
+    Port  = ssl_test_lib:inet_port(Server),
+    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
+					{host, Hostname},
+                                        {from, self()},
+                                        {mfa, {ssl_test_lib, send_recv_result_active, []}},
+                                        {options,  [{verify, verify_peer} | ClientConf]}]),
+    
+    ssl_test_lib:check_result(Server, ok, Client, ok),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close(Client).
diff --git a/lib/ssl/test/ssl_packet_SUITE.erl b/lib/ssl/test/ssl_packet_SUITE.erl
index 408d62ce9c..3261244ace 100644
--- a/lib/ssl/test/ssl_packet_SUITE.erl
+++ b/lib/ssl/test/ssl_packet_SUITE.erl
@@ -63,8 +63,10 @@ groups() ->
      {'tlsv1.1', [], socket_packet_tests() ++ protocol_packet_tests()},
      {'tlsv1', [], socket_packet_tests() ++ protocol_packet_tests()},
      {'sslv3', [], socket_packet_tests() ++ protocol_packet_tests()},
-     {'dtlsv1.2', [], protocol_packet_tests()},
-     {'dtlsv1', [],  protocol_packet_tests()}
+     %% We will not support any packet types if the transport is
+     %% not reliable. We might support it for DTLS over SCTP in the future 
+     {'dtlsv1.2', [], [reject_packet_opt]},
+     {'dtlsv1', [],  [reject_packet_opt]}
     ].
 
 socket_packet_tests() ->
@@ -1924,6 +1926,25 @@ header_decode_two_bytes_one_sent_passive(Config) when is_list(Config) ->
     ssl_test_lib:close(Client).
 
 %%--------------------------------------------------------------------
+reject_packet_opt() ->
+    [{doc,"Test packet option is rejected for DTLS over udp"}].
+
+reject_packet_opt(Config) when is_list(Config) ->
+
+    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
+       
+    {error,{options,{not_supported,{packet,4}}}} = 
+        ssl:listen(9999, [{packet, 4} | ServerOpts]),
+    {error,{options,{not_supported,{packet_size,1}}}} =  
+        ssl:listen(9999, [{packet_size, 1} | ServerOpts]),
+    {error,{options,{not_supported,{header,1}}}} =
+        ssl:listen(9999, [{header, 1} | ServerOpts]),
+    
+    client_reject_packet_opt(Config, {packet,4}),
+    client_reject_packet_opt(Config, {packet_size, 1}),
+    client_reject_packet_opt(Config, {header, 1}).
+
+%%--------------------------------------------------------------------
 %% Internal functions ------------------------------------------------
 %%--------------------------------------------------------------------
 
@@ -2245,3 +2266,23 @@ add_tpkt_header(IOList) when is_list(IOList) ->
     Binary = list_to_binary(IOList),
     L = size(Binary) + 4,
     [3, 0, ((L) bsr 8) band 16#ff, (L) band 16#ff , Binary].
+
+
+client_reject_packet_opt(Config, PacketOpt) ->
+    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
+    ClientOpts = ssl_test_lib:ssl_options(client_opts, Config),
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+
+    Server = ssl_test_lib:start_server([{node, ClientNode}, {port, 0},
+                                        {from, self()},
+                                        {mfa, {ssl_test_lib, no_result_msg ,[]}},
+                                        {options, ServerOpts}]),
+    Port = ssl_test_lib:inet_port(Server),
+    Client = ssl_test_lib:start_client_error([{node, ServerNode}, {port, Port},
+                                              {host, Hostname},
+                                              {from, self()},
+                                              {mfa, {ssl_test_lib, no_result_msg, []}},
+                                              {options, [PacketOpt |
+                                                         ClientOpts]}]),
+    
+    ssl_test_lib:check_result(Client, {error, {options, {not_supported, PacketOpt}}}).
diff --git a/lib/ssl/test/ssl_sni_SUITE.erl b/lib/ssl/test/ssl_sni_SUITE.erl
index 03676cb828..7e78c41444 100644
--- a/lib/ssl/test/ssl_sni_SUITE.erl
+++ b/lib/ssl/test/ssl_sni_SUITE.erl
@@ -25,6 +25,8 @@
 
 -include_lib("common_test/include/ct.hrl").
 -include_lib("public_key/include/public_key.hrl").
+-include_lib("kernel/include/inet.hrl").
+
 
 %%--------------------------------------------------------------------
 %% Common Test interface functions -----------------------------------
@@ -55,7 +57,11 @@ sni_tests() ->
      sni_no_match,
      no_sni_header_fun, 
      sni_match_fun, 
-     sni_no_match_fun].
+     sni_no_match_fun,
+     dns_name,
+     ip_fallback,
+     no_ip_fallback,
+     dns_name_reuse].
 
 init_per_suite(Config0) ->
     catch crypto:stop(),
@@ -82,6 +88,13 @@ end_per_suite(_) ->
     ssl:stop(),
     application:stop(crypto).
 
+init_per_testcase(TestCase, Config) when TestCase == ip_fallback;
+                                         TestCase == no_ip_fallback;
+                                         TestCase == dns_name_reuse ->
+    ssl_test_lib:ct_log_supported_protocol_versions(Config),
+    ct:log("Ciphers: ~p~n ", [ ssl:cipher_suites()]),
+    ct:timetrap({seconds, 20}),
+    Config;
 init_per_testcase(_TestCase, Config) ->
     ssl_test_lib:ct_log_supported_protocol_versions(Config),
     ct:log("Ciphers: ~p~n ", [ ssl:cipher_suites()]),
@@ -112,7 +125,119 @@ sni_no_match(Config) ->
 sni_no_match_fun(Config) ->
     run_sni_fun_handshake(Config, "c.server", undefined, "server Peer cert").
 
+dns_name(Config) ->
+    Hostname = "OTP.test.server",
+    #{server_config := ServerConf,
+      client_config := ClientConf} = public_key:pkix_test_data(#{server_chain => 
+                                                                     #{root => [{key, ssl_test_lib:hardcode_rsa_key(1)}],
+                                                                       intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(2)}]],
+                                                                       peer => [{extensions,  [#'Extension'{extnID = 
+                                                                                                                ?'id-ce-subjectAltName',
+                                                                                                            extnValue = [{dNSName, Hostname}],
+                                                                                                            critical = false}]},
+                                                                                {key, ssl_test_lib:hardcode_rsa_key(3)}]},
+                                                                 client_chain => 
+                                                                     #{root => [{key, ssl_test_lib:hardcode_rsa_key(4)}],
+                                                                       intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(5)}]],
+                                                                       peer => [{key, ssl_test_lib:hardcode_rsa_key(6)}]}}),
+    unsuccessfull_connect(ServerConf, [{verify, verify_peer} | ClientConf], undefined, Config),
+    successfull_connect(ServerConf, [{verify, verify_peer}, {server_name_indication, Hostname} | ClientConf], undefined, Config),
+    unsuccessfull_connect(ServerConf, [{verify, verify_peer}, {server_name_indication, "foo"} | ClientConf], undefined, Config),
+    successfull_connect(ServerConf, [{verify, verify_peer}, {server_name_indication, disable} | ClientConf], undefined, Config).
+
+ip_fallback(Config) ->
+    Hostname = net_adm:localhost(),
+    {ok, #hostent{h_addr_list = [IP |_]}} = inet:gethostbyname(net_adm:localhost()),
+    IPStr = tuple_to_list(IP),
+    #{server_config := ServerConf,
+      client_config := ClientConf} = public_key:pkix_test_data(#{server_chain => 
+                                                                     #{root => [{key, ssl_test_lib:hardcode_rsa_key(1)}],
+                                                                       intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(2)}]],
+                                                                       peer => [{extensions, [#'Extension'{extnID = 
+                                                                                                               ?'id-ce-subjectAltName',
+                                                                                                           extnValue = [{dNSName, Hostname},
+                                                                                                                        {iPAddress, IPStr}],
+                                                                                                           critical = false}]},
+                                                                                {key, ssl_test_lib:hardcode_rsa_key(3)}]},
+                                                                 client_chain => 
+                                                                     #{root => [{key, ssl_test_lib:hardcode_rsa_key(4)}],
+                                                                       intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(5)}]],
+                                                                       peer => [{key, ssl_test_lib:hardcode_rsa_key(6)}]}}),
+    successfull_connect(ServerConf, [{verify, verify_peer} | ClientConf], Hostname, Config),
+    successfull_connect(ServerConf, [{verify, verify_peer} | ClientConf], IP, Config).
+
+no_ip_fallback(Config) ->
+    Hostname = net_adm:localhost(),
+    {ok, #hostent{h_addr_list = [IP |_]}} = inet:gethostbyname(net_adm:localhost()),
+    #{server_config := ServerConf,
+      client_config := ClientConf} = public_key:pkix_test_data(#{server_chain => 
+                                                                     #{root => [{key, ssl_test_lib:hardcode_rsa_key(1)}],
+                                                                       intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(2)}]],
+                                                                       peer => [{extensions, [#'Extension'{extnID = 
+                                                                                                               ?'id-ce-subjectAltName',
+                                                                                                           extnValue = [{dNSName, Hostname}],
+                                                                                                           critical = false}]},
+                                                                                {key, ssl_test_lib:hardcode_rsa_key(3)}
+                                                                               ]},
+                                                                 client_chain => 
+                                                                     #{root => [{key, ssl_test_lib:hardcode_rsa_key(4)}],
+                                                                       intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(5)}]],
+                                                                       peer => [{key, ssl_test_lib:hardcode_rsa_key(6)}]}}),
+    successfull_connect(ServerConf, [{verify, verify_peer} | ClientConf], Hostname, Config),
+    unsuccessfull_connect(ServerConf, [{verify, verify_peer} | ClientConf], IP, Config).
 
+dns_name_reuse(Config) ->
+    SNIHostname = "OTP.test.server",
+    #{server_config := ServerConf,
+      client_config := ClientConf} = public_key:pkix_test_data(#{server_chain => 
+                                                                     #{root => [{key, ssl_test_lib:hardcode_rsa_key(1)}],
+                                                                       intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(2)}]],
+                                                                       peer => [{extensions,  [#'Extension'{extnID = 
+                                                                                                                ?'id-ce-subjectAltName',
+                                                                                                            extnValue = [{dNSName, SNIHostname}],
+                                                                                                            critical = false}
+                                                                                              ]},
+                                                                                {key, ssl_test_lib:hardcode_rsa_key(3)}
+                                                                               ]},
+                                                                 client_chain => 
+                                                                     #{root => [{key, ssl_test_lib:hardcode_rsa_key(4)}],
+                                                                       intermediates => [[{key, ssl_test_lib:hardcode_rsa_key(5)}]],
+                                                                       peer => [{key, ssl_test_lib:hardcode_rsa_key(6)}]}}),
+    
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+  
+    unsuccessfull_connect(ServerConf, [{verify, verify_peer} | ClientConf], undefined, Config),
+    
+    Server = 
+	ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
+				   {from, self()},
+				   {mfa, {ssl_test_lib, session_info_result, []}},
+				   {options, ServerConf}]),
+    Port = ssl_test_lib:inet_port(Server),
+    Client0 =
+	ssl_test_lib:start_client([{node, ClientNode}, 
+                                   {port, Port}, {host, Hostname},
+				   {mfa, {ssl_test_lib, no_result, []}},
+                                   {from, self()}, {options, [{verify, verify_peer}, 
+                                                              {server_name_indication, SNIHostname} | ClientConf]}]),   
+    receive
+        {Server, _} ->
+            ok
+    end,
+    
+    Server ! {listen, {mfa, {ssl_test_lib, no_result, []}}},
+    
+    %% Make sure session is registered
+    ct:sleep(1000),
+    
+    Client1 =
+	ssl_test_lib:start_client_error([{node, ClientNode},
+                                         {port, Port}, {host, Hostname},
+                                         {mfa, {ssl_test_lib, session_info_result, []}},
+                                         {from, self()},  {options, [{verify, verify_peer} | ClientConf]}]),
+    
+    ssl_test_lib:check_result(Client1, {error, {tls_alert, "handshake failure"}}),
+    ssl_test_lib:close(Client0).
 %%--------------------------------------------------------------------
 %% Internal Functions ------------------------------------------------
 %%--------------------------------------------------------------------
@@ -217,3 +342,37 @@ run_handshake(Config, SNIHostname, ExpectedSNIHostname, ExpectedCN) ->
     ssl_test_lib:check_result(Server, ExpectedSNIHostname, Client, ExpectedCN),
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client).
+
+successfull_connect(ServerOptions, ClientOptions, Hostname0, Config) ->  
+    {ClientNode, ServerNode, Hostname1} = ssl_test_lib:run_where(Config),
+    Hostname = host_name(Hostname0, Hostname1),
+    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+                                        {from, self()}, {mfa, {ssl_test_lib, send_recv_result_active, []}},
+                                        {options, ServerOptions}]),
+    Port = ssl_test_lib:inet_port(Server),
+    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
+                                        {host, Hostname}, {from, self()},
+                                        {mfa, {ssl_test_lib, send_recv_result_active, []}},
+                                        {options, ClientOptions}]),
+    ssl_test_lib:check_result(Server, ok, Client, ok),
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close(Client).
+
+unsuccessfull_connect(ServerOptions, ClientOptions, Hostname0, Config) ->
+    {ClientNode, ServerNode, Hostname1} = ssl_test_lib:run_where(Config),
+    Hostname = host_name(Hostname0, Hostname1),
+    Server = ssl_test_lib:start_server_error([{node, ServerNode}, {port, 0},
+					      {from, self()},
+					      {options, ServerOptions}]),
+    Port = ssl_test_lib:inet_port(Server),
+    Client = ssl_test_lib:start_client_error([{node, ClientNode}, {port, Port},
+					      {host, Hostname},
+					      {from, self()}, 
+					      {options, ClientOptions}]),
+    
+    ssl_test_lib:check_result(Server, {error, {tls_alert, "handshake failure"}},
+			      Client, {error, {tls_alert, "handshake failure"}}).
+host_name(undefined, Hostname) ->
+    Hostname;
+host_name(Hostname, _) ->
+    Hostname.
diff --git a/lib/ssl/test/ssl_test_lib.erl b/lib/ssl/test/ssl_test_lib.erl
index 4e7252f469..03c3ed9be3 100644
--- a/lib/ssl/test/ssl_test_lib.erl
+++ b/lib/ssl/test/ssl_test_lib.erl
@@ -1025,48 +1025,54 @@ string_regex_filter(_Str, _Search) ->
     false.
 
 anonymous_suites(Version) ->
-    Suites = [ssl_cipher:erl_suite_definition(S) || S <- ssl_cipher:anonymous_suites(Version)],
-    ssl_cipher:filter_suites(Suites).
+    [ssl_cipher:erl_suite_definition(S) || S <- ssl_cipher:filter_suites(ssl_cipher:anonymous_suites(Version))].
 
 psk_suites(Version) ->
-    Suites = [ssl_cipher:erl_suite_definition(S) || S <- ssl_cipher:psk_suites(Version)],
-    ssl_cipher:filter_suites(Suites).
+    [ssl_cipher:erl_suite_definition(S) || S <-  ssl_cipher:filter_suites(ssl_cipher:psk_suites(Version))].
 
 psk_anon_suites(Version) ->
-    Suites = [Suite || Suite <- psk_suites(Version), is_psk_anon_suite(Suite)],
-    ssl_cipher:filter_suites(Suites).
+    [Suite || Suite <-  psk_suites(Version), is_psk_anon_suite(Suite)].
 
 srp_suites() ->
-    Suites =
-	[{srp_anon, '3des_ede_cbc', sha},
-	 {srp_rsa, '3des_ede_cbc', sha},
-	 {srp_anon, aes_128_cbc, sha},
-	 {srp_rsa, aes_128_cbc, sha},
-	 {srp_anon, aes_256_cbc, sha},
-	 {srp_rsa, aes_256_cbc, sha}],
-    ssl_cipher:filter_suites(Suites).
-
+    [ssl_cipher:erl_suite_definition(Suite) || 
+        Suite  <-
+            ssl_cipher:filter_suites([tuple_to_map(S) || 
+                                         S <- [{srp_anon,'3des_ede_cbc', sha},
+                                               {srp_rsa, '3des_ede_cbc', sha},
+                                               {srp_anon, aes_128_cbc, sha},
+                                               {srp_rsa, aes_128_cbc, sha},
+                                               {srp_anon, aes_256_cbc, sha},
+                                               {srp_rsa, aes_256_cbc, sha}]])].
 srp_anon_suites() ->
-    Suites =
-	[{srp_anon, '3des_ede_cbc', sha},
-	 {srp_anon, aes_128_cbc, sha},
-	 {srp_anon, aes_256_cbc, sha}],
-    ssl_cipher:filter_suites(Suites).
-
+    [ssl_cipher:erl_suite_definition(Suite) || 
+        Suite  <-
+            ssl_cipher:filter_suites([tuple_to_map(S) || 
+                                         S <-[{srp_anon, '3des_ede_cbc', sha},
+                                              {srp_anon, aes_128_cbc, sha},
+                                              {srp_anon, aes_256_cbc, sha}]])].
 srp_dss_suites() ->
-    Suites =
-	[{srp_dss, '3des_ede_cbc', sha},
-	 {srp_dss, aes_128_cbc, sha},
-	 {srp_dss, aes_256_cbc, sha}],
-    ssl_cipher:filter_suites(Suites).
-
+    [ssl_cipher:erl_suite_definition(Suite) || 
+        Suite  <-
+            ssl_cipher:filter_suites([tuple_to_map(S) || 
+                                         S <-	[{srp_dss, '3des_ede_cbc', sha},
+                                                 {srp_dss, aes_128_cbc, sha},
+                                                 {srp_dss, aes_256_cbc, sha}]])].
 rc4_suites(Version) ->
-    Suites = [ssl_cipher:erl_suite_definition(S) || S <- ssl_cipher:rc4_suites(Version)],
-    ssl_cipher:filter_suites(Suites).
+    [ssl_cipher:erl_suite_definition(S) || S <- ssl_cipher:filter_suites(ssl_cipher:rc4_suites(Version))].
 
 des_suites(Version) ->
-    Suites = ssl_cipher:des_suites(Version),
-    ssl_cipher:filter_suites(Suites).
+    [ssl_cipher:erl_suite_definition(S) || S <- ssl_cipher:filter_suites(ssl_cipher:des_suites(Version))].
+
+tuple_to_map({Kex, Cipher, Mac}) ->
+    #{key_exchange => Kex,
+      cipher => Cipher,
+      mac => Mac,
+      prf => default_prf};
+tuple_to_map({Kex, Cipher, Mac, Prf}) ->
+    #{key_exchange => Kex,
+      cipher => Cipher,
+      mac => Mac,
+      prf => Prf}.
 
 pem_to_der(File) ->
     {ok, PemBin} = file:read_file(File),
diff --git a/lib/ssl/test/x509_test.erl b/lib/ssl/test/x509_test.erl
index 031fad1216..fea01efdaf 100644
--- a/lib/ssl/test/x509_test.erl
+++ b/lib/ssl/test/x509_test.erl
@@ -64,15 +64,12 @@ do_gen_pem_config_files(Config, CertFile, KeyFile, CAFile) ->
 cert_entry(Cert) ->
     {'Certificate', Cert, not_encrypted}.
 
-key_entry(Key = #'RSAPrivateKey'{}) ->
-    Der = public_key:der_encode('RSAPrivateKey', Key),
-    {'RSAPrivateKey', Der, not_encrypted};
-key_entry(Key = #'DSAPrivateKey'{}) ->
-    Der =  public_key:der_encode('DSAPrivateKey', Key),
-    {'DSAPrivateKey', Der, not_encrypted};
-key_entry(Key = #'ECPrivateKey'{}) ->
-    Der =  public_key:der_encode('ECPrivateKey', Key),
-    {'ECPrivateKey', Der, not_encrypted}.
+key_entry({'RSAPrivateKey', DERKey}) ->
+    {'RSAPrivateKey', DERKey, not_encrypted};
+key_entry({'DSAPrivateKey', DERKey}) ->
+    {'DSAPrivateKey', DERKey, not_encrypted};
+key_entry({'ECPrivateKey', DERKey}) ->
+    {'ECPrivateKey', DERKey, not_encrypted}.
 
 ca_entries(CAs) ->
     [{'Certificate', CACert, not_encrypted} || CACert <- CAs].
diff --git a/lib/ssl/vsn.mk b/lib/ssl/vsn.mk
index bb77326751..2650399eea 100644
--- a/lib/ssl/vsn.mk
+++ b/lib/ssl/vsn.mk
@@ -1 +1 @@
-SSL_VSN = 8.2.1
+SSL_VSN = 8.2.3
diff --git a/lib/stdlib/doc/src/Makefile b/lib/stdlib/doc/src/Makefile
index 26602764a6..af27efa6c1 100644
--- a/lib/stdlib/doc/src/Makefile
+++ b/lib/stdlib/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
+# Copyright Ericsson AB 1997-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -98,13 +98,15 @@ XML_REF3_FILES = \
 	sys.xml \
 	timer.xml \
 	unicode.xml \
+	uri_string.xml \
 	win32reg.xml \
 	zip.xml
 
 XML_REF6_FILES = stdlib_app.xml
 
-XML_PART_FILES = part.xml part_notes.xml part_notes_history.xml
-XML_CHAPTER_FILES = io_protocol.xml unicode_usage.xml notes.xml notes_history.xml assert_hrl.xml
+XML_PART_FILES = part.xml
+XML_CHAPTER_FILES = introduction.xml io_protocol.xml unicode_usage.xml \
+	notes.xml assert_hrl.xml
 
 BOOK_FILES = book.xml
 
@@ -131,9 +133,9 @@ SPECS_FILES = $(XML_REF3_FILES:%.xml=$(SPECDIR)/specs_%.xml)
 TOP_SPECS_FILE = specs.xml
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 SPECS_FLAGS = -I../../include -I../../../kernel/include
 
@@ -150,7 +152,7 @@ html: $(HTML_REF_MAN_FILE)
 
 man: $(MAN3_FILES) $(MAN6_FILES)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
@@ -158,7 +160,7 @@ clean clean_docs:
 	rm -f $(MAN6DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
 	rm -f $(SPECDIR)/*
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 $(SPECDIR)/specs_erl_id_trans.xml:
 	escript $(SPECS_EXTRACTOR) $(SPECS_FLAGS) \
@@ -166,7 +168,7 @@ $(SPECDIR)/specs_erl_id_trans.xml:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/stdlib/doc/src/c.xml b/lib/stdlib/doc/src/c.xml
index 7666699183..697e1715e7 100644
--- a/lib/stdlib/doc/src/c.xml
+++ b/lib/stdlib/doc/src/c.xml
@@ -94,6 +94,15 @@
     </func>
 
     <func>
+      <name name="erlangrc" arity="1"/>
+      <fsummary>Load an erlang resource file.</fsummary>
+      <desc>
+        <p>Search <c>PathList</c> and load <c>.erlang</c> resource file if
+	found.</p>
+      </desc>
+    </func>
+
+    <func>
       <name name="flush" arity="0"/>
       <fsummary>Flush any messages sent to the shell.</fsummary>
       <desc>
diff --git a/lib/stdlib/doc/src/digraph.xml b/lib/stdlib/doc/src/digraph.xml
index 5332d7aba5..db96beed6c 100644
--- a/lib/stdlib/doc/src/digraph.xml
+++ b/lib/stdlib/doc/src/digraph.xml
@@ -170,6 +170,10 @@
         <p>If the edge would create a cycle in
           an <seealso marker="#acyclic_digraph">acyclic digraph</seealso>,
           <c>{error,&nbsp;{bad_edge,&nbsp;<anno>Path</anno>}}</c> is returned.
+          If <c><anno>G</anno></c> already has an edge with value
+          <c><anno>E</anno></c> connecting a different pair of vertices,
+          <c>{error,&nbsp;{bad_edge,&nbsp;[<anno>V1</anno>,&nbsp;<anno>V2</anno>]}}</c>
+          is returned.
           If either of <c><anno>V1</anno></c> or <c><anno>V2</anno></c> is not
           a vertex of digraph <c><anno>G</anno></c>,
           <c>{error,&nbsp;{bad_vertex,&nbsp;</c><anno>V</anno><c>}}</c> is
diff --git a/lib/stdlib/doc/src/ets.xml b/lib/stdlib/doc/src/ets.xml
index 576959b1c8..a0ec22c515 100644
--- a/lib/stdlib/doc/src/ets.xml
+++ b/lib/stdlib/doc/src/ets.xml
@@ -1961,7 +1961,7 @@ true</pre>
           The return value is a list of the new counter values from each 
           update operation in the same order as in the operation list. If an 
           empty list is specified, nothing is updated and an empty list is 
-          returned. If the function fails, no updates is done.</p>
+          returned. If the function fails, no updates are done.</p>
         <p>The specified <c><anno>Key</anno></c> is used to identify the object
           by either <em>matching</em> the key of an object in a <c>set</c>
           table, or <em>compare equal</em> to the key of an object in an
diff --git a/lib/stdlib/doc/src/fascicules.xml b/lib/stdlib/doc/src/fascicules.xml
deleted file mode 100644
index 0ded9007e0..0000000000
--- a/lib/stdlib/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    STDLIB User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/stdlib/doc/src/filelib.xml b/lib/stdlib/doc/src/filelib.xml
index 1b69e84d31..5e631aac21 100644
--- a/lib/stdlib/doc/src/filelib.xml
+++ b/lib/stdlib/doc/src/filelib.xml
@@ -50,16 +50,16 @@
       <p>
 	Functionality in this module generally assumes valid input and
 	does not necessarily fail on input that does not use a valid
-	encoding. You can validate the encoding of a filename using
-	<seealso marker="stdlib:filename#validate/1">filename:validate/1</seealso>.
+	encoding, but may instead very likely produce invalid output.
       </p>
       <p>
 	File operations used to accept filenames containing
 	null characters (integer value zero). This caused
-	the name to be truncated at the first null character.
-	Filenames containing null characters inside the filename
+	the name to be truncated and in some cases arguments
+	to primitive operations to be mixed up. Filenames
+	containing null characters inside the filename
 	are now <em>rejected</em> and will cause primitive
-	file operations fail.
+	file operations to fail.
       </p>
     </note>
     <warning><p>
diff --git a/lib/stdlib/doc/src/filename.xml b/lib/stdlib/doc/src/filename.xml
index b6028fc066..d2608ad542 100644
--- a/lib/stdlib/doc/src/filename.xml
+++ b/lib/stdlib/doc/src/filename.xml
@@ -64,16 +64,16 @@
       <p>
 	Functionality in this module generally assumes valid input and
 	does not necessarily fail on input that does not use a valid
-	encoding. You can validate the encoding of a filename using
-	<seealso marker="#validate/1">filename:validate/1</seealso>.
+	encoding, but may instead very likely produce invalid output.
       </p>
       <p>
 	File operations used to accept filenames containing
 	null characters (integer value zero). This caused
-	the name to be truncated at the first null character.
-	Filenames containing null characters inside the filename
+	the name to be truncated and in some cases arguments
+	to primitive operations to be mixed up. Filenames
+	containing null characters inside the filename
 	are now <em>rejected</em> and will cause primitive
-	file operations fail.
+	file operations to fail.
       </p>
     </note>
     <warning><p>
@@ -583,54 +583,6 @@ unsafe</pre>
       </desc>
     </func>
 
-    <func>
-      <name name="validate" arity="1"/>
-      <fsummary>Validate encoding of filename</fsummary>
-      <desc>
-	<p>
-	  Validates filename encoding. Returns <c>true</c> if
-	  <c><anno>FileName</anno></c> has a valid encoding;
-	  otherwise, returns <c>false</c>.
-	</p>
-	<taglist>
-	  <tag>Ordinary Filename</tag>
-	  <item>
-	    <p>
-	      Type: <c><anno>FileName</anno> = </c><seealso marker="kernel:file#type-name"><c>file:name()</c></seealso>
-	    </p>
-	    <p>
-	      Validates encoding against the
-	      <seealso marker="kernel:file#native_name_encoding/0">native file
-	      name encoding</seealso>, and the
-	      capabilities of the operating system used.
-	      Regardless of configuration and OS, null
-	      characters (integer value zero) will be
-	      rejected by the validation  (even when only
-	      present at the end of the filename).
-	    </p>
-	  </item>
-	  <tag><seealso marker="unicode_usage#notes-about-raw-filenames">Raw
-	  Filename</seealso></tag>
-	  <item>
-	    <p>
-	      Type: <c><anno>FileName</anno> = binary()</c>
-	    </p>
-	    <p>
-	      The encoding will not be interpreted, but
-	      null bytes (integer value zero) will be
-	      rejected by the validation (even when only
-	      present at the end of the filename).
-	    </p>
-	  </item>
-	</taglist>
-	<p>
-	  For information on filename encoding see the documentation
-	  of unicode filenames in
-	  <seealso marker="stdlib:unicode_usage#unicode_file_names">STDLIB
-	  Users Guide ➜ Using Unicode in Erlang ➜ Unicode Filenames</seealso>.
-	</p>
-      </desc>
-    </func>
   </funcs>
 </erlref>
 
diff --git a/lib/stdlib/doc/src/gen_statem.xml b/lib/stdlib/doc/src/gen_statem.xml
index 8de6ed754f..4a824f073e 100644
--- a/lib/stdlib/doc/src/gen_statem.xml
+++ b/lib/stdlib/doc/src/gen_statem.xml
@@ -1329,7 +1329,7 @@ handle_event(_, _, State, Data) ->
 	  <c><anno>T</anno></c> is the time-out time.
 	  <c>{clean_timeout,<anno>T</anno>}</c> works like
 	  just <c>T</c> described in the note above
-	  and uses a proxy process for <c>T &lt; infinity</c>,
+	  and uses a proxy process
 	  while <c>{dirty_timeout,<anno>T</anno>}</c>
 	  bypasses the proxy process which is more lightweight.
 	</p>
@@ -1339,8 +1339,12 @@ handle_event(_, _, State, Data) ->
 	    with <c>{dirty_timeout,<anno>T</anno>}</c>
 	    to avoid that the calling process dies when the call
 	    times out, you will have to be prepared to handle
-	    a late reply.
-	    So why not just let the calling process die?
+	    a late reply.  Note that there is an odd chance
+	    to get a late reply even with
+	    <c>{dirty_timeout,infinity}</c> or <c>infinity</c>
+	    for example in the event of network problems.
+	    So why not just let the calling process die
+	    by not catching the exception?
 	  </p>
 	</note>
 	<p>
diff --git a/lib/stdlib/doc/src/maps.xml b/lib/stdlib/doc/src/maps.xml
index 8c7270816b..987d92989d 100644
--- a/lib/stdlib/doc/src/maps.xml
+++ b/lib/stdlib/doc/src/maps.xml
@@ -33,16 +33,31 @@
     <p>This module contains functions for maps processing.</p>
   </description>
 
+  <datatypes>
+    <datatype>
+      <name name="iterator"/>
+      <desc>
+        <p>An iterator representing the key value associations in a map.</p>
+        <p>Created using <seealso marker="#iterator-1"><c>maps:iterator/1</c></seealso>.</p>
+        <p>Consumed by <seealso marker="#next-1"><c>maps:next/1</c></seealso>,
+          <seealso marker="#filter-2"><c>maps:filter/2</c></seealso>,
+          <seealso marker="#fold-3"><c>maps:fold/3</c></seealso> and
+          <seealso marker="#map-2"><c>maps:map/2</c></seealso>.</p>
+      </desc>
+    </datatype>
+  </datatypes>
+
   <funcs>
     <func>
       <name name="filter" arity="2"/>
       <fsummary>Select pairs that satisfy a predicate.</fsummary>
       <desc>
-        <p>Returns a map <c><anno>Map2</anno></c> for which predicate
-          <c><anno>Pred</anno></c> holds true in <c><anno>Map1</anno></c>.</p>
+        <p>Returns a map <c><anno>Map</anno></c> for which predicate
+          <c><anno>Pred</anno></c> holds true in <c><anno>MapOrIter</anno></c>.</p>
         <p>The call fails with a <c>{badmap,Map}</c> exception if
-          <c><anno>Map1</anno></c> is not a map, or with <c>badarg</c> if
-          <c><anno>Pred</anno></c> is not a function of arity 2.</p>
+          <c><anno>MapOrIter</anno></c> is not a map or valid iterator,
+          or with <c>badarg</c> if <c><anno>Pred</anno></c> is not a
+          function of arity 2.</p>
         <p><em>Example:</em></p>
         <code type="none">
 > M = #{a => 2, b => 3, c=> 4, "a" => 1, "b" => 2, "c" => 4},
@@ -76,12 +91,16 @@
       <fsummary></fsummary>
       <desc>
         <p>Calls <c>F(K, V, AccIn)</c> for every <c><anno>K</anno></c> to value
-          <c><anno>V</anno></c> association in <c><anno>Map</anno></c> in
+          <c><anno>V</anno></c> association in <c><anno>MapOrIter</anno></c> in
           any order. Function <c>fun F/3</c> must return a new
           accumulator, which is passed to the next successive call.
           This function returns the final value of the accumulator. The initial
           accumulator value <c><anno>Init</anno></c> is returned if the map is
           empty.</p>
+        <p>The call fails with a <c>{badmap,Map}</c> exception if
+          <c><anno>MapOrIter</anno></c> is not a map or valid iterator,
+          or with <c>badarg</c> if <c><anno>Fun</anno></c> is not a
+          function of arity 3.</p>
         <p><em>Example:</em></p>
         <code type="none">
 > Fun = fun(K,V,AccIn) when is_list(K) -> AccIn + V end,
@@ -169,6 +188,32 @@ false</code>
     </func>
 
     <func>
+      <name name="iterator" arity="1"/>
+      <fsummary>Create a map iterator.</fsummary>
+      <desc>
+        <p>Returns a map iterator <c><anno>Iterator</anno></c> that can
+          be used by <seealso marker="#next-1"><c>maps:next/1</c></seealso>
+          to traverse the key-value associations in a map. When iterating
+          over a map, the memory usage is guaranteed to be bounded no matter
+          the size of the map.</p>
+        <p>The call fails with a <c>{badmap,Map}</c> exception if
+          <c><anno>Map</anno></c> is not a map.</p>
+        <p><em>Example:</em></p>
+        <code type="none">
+> M = #{ a => 1, b => 2 }.
+#{a => 1,b => 2}
+> I = maps:iterator(M).
+[{a,1},{b,2}]
+> {K1, V1, I2} = maps:next(I).
+{a,1,[{b,2}]}
+> {K2, V2, I3} = maps:next(I2).
+{b,2,[]}
+> maps:next(I3).
+none</code>
+      </desc>
+    </func>
+
+    <func>
       <name name="keys" arity="1"/>
       <fsummary></fsummary>
       <desc>
@@ -188,12 +233,16 @@ false</code>
       <name name="map" arity="2"/>
       <fsummary></fsummary>
       <desc>
-        <p>Produces a new map <c><anno>Map2</anno></c> by calling function
+        <p>Produces a new map <c><anno>Map</anno></c> by calling function
           <c>fun F(K, V1)</c> for every <c><anno>K</anno></c> to value
-          <c><anno>V1</anno></c> association in <c><anno>Map1</anno></c> in
+          <c><anno>V1</anno></c> association in <c><anno>MapOrIter</anno></c> in
           any order. Function <c>fun F/2</c> must return value
           <c><anno>V2</anno></c> to be associated with key <c><anno>K</anno></c>
-          for the new map <c><anno>Map2</anno></c>.</p>
+          for the new map <c><anno>Map</anno></c>.</p>
+        <p>The call fails with a <c>{badmap,Map}</c> exception if
+          <c><anno>MapOrIter</anno></c> is not a map or valid iterator,
+          or with <c>badarg</c> if <c><anno>Fun</anno></c> is not a
+          function of arity 2.</p>
         <p><em>Example:</em></p>
         <code type="none">
 > Fun = fun(K,V1) when is_list(K) -> V1*2 end,
@@ -234,6 +283,35 @@ false</code>
     </func>
 
     <func>
+      <name name="next" arity="1"/>
+      <fsummary>Get the next key and value from an iterator.</fsummary>
+      <desc>
+        <p>Returns the next key-value association in
+          <c><anno>Iterator</anno></c> and a new iterator for the
+          remaining associations in the iterator.
+        </p>
+        <p>
+          If there are no more associations in the iterator,
+          <c>none</c> is returned.
+        </p>
+        <p><em>Example:</em></p>
+        <code type="none">
+> Map = #{a => 1, b => 2, c => 3}.
+#{a => 1,b => 2,c => 3}
+> Iter = maps:iterator(Map).
+[{a,1},{b,2},{c,3}]
+> {_, _, Iter1} = maps:next(Iter).
+{a,1,[{b,2},{c,3}]}
+> {_, _, Iter2} = maps:next(Iter1).
+{b,2,[{c,3}]}
+> {_, _, Iter3} = maps:next(Iter2).
+{c,3,[]}
+> maps:next(Iter3).
+none</code>
+      </desc>
+    </func>
+
+    <func>
       <name name="put" arity="3"/>
       <fsummary></fsummary>
       <desc>
diff --git a/lib/stdlib/doc/src/notes.xml b/lib/stdlib/doc/src/notes.xml
index d396f1de8f..b61e5b9b9e 100644
--- a/lib/stdlib/doc/src/notes.xml
+++ b/lib/stdlib/doc/src/notes.xml
@@ -31,6 +31,49 @@
   </header>
   <p>This document describes the changes made to the STDLIB application.</p>
 
+<section><title>STDLIB 3.4.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Make <c>ets:i/1</c> exit cleaner when ^D is input
+	    while browsing a table. Only the old Erlang shell is
+	    affected (<c>erl(1)</c> flag <c>-oldshell</c>). </p>
+          <p>
+	    Own Id: OTP-14663</p>
+        </item>
+        <item>
+          <p>
+	    Fixed handling of windows UNC paths in module
+	    <c>filename</c>.</p>
+          <p>
+	    Own Id: OTP-14693</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    Improve performance of the new string functionality when
+	    handling ASCII characters.</p>
+          <p>
+	    Own Id: OTP-14670</p>
+        </item>
+        <item>
+          <p>
+	    Added a clarification to the documentation of
+	    <c>unicode:characters_to_list/2</c>.</p>
+          <p>
+	    Own Id: OTP-14798</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>STDLIB 3.4.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/stdlib/doc/src/part_notes.xml b/lib/stdlib/doc/src/part_notes.xml
deleted file mode 100644
index 461de749dd..0000000000
--- a/lib/stdlib/doc/src/part_notes.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>STDLIB Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The Standard Erlang Libraries application, <em>STDLIB</em>,
-      contains modules for manipulating lists, strings and files etc.</p>
-    <p>For information about older versions, see
-      <url href="part_notes_history_frame.html">Release Notes History</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/stdlib/doc/src/part_notes_history.xml b/lib/stdlib/doc/src/part_notes_history.xml
deleted file mode 100644
index 8fd048a41e..0000000000
--- a/lib/stdlib/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2006</year>
-      <year>2016</year>
-      <holder>Ericsson AB, All Rights Reserved</holder>
-    </copyright>
-    <legalnotice>
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
- 
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-  The Initial Developer of the Original Code is Ericsson AB.
-    </legalnotice>
-
-    <title>STDLIB Release Notes History</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The Standard Erlang Libraries application, <em>STDLIB</em>,
-      contains modules for manipulating lists, strings and files etc.</p>
-  </description>
-  <include file="notes_history"></include>
-</part>
-
diff --git a/lib/stdlib/doc/src/ref_man.xml b/lib/stdlib/doc/src/ref_man.xml
index 878a3babc5..68bfddbc71 100644
--- a/lib/stdlib/doc/src/ref_man.xml
+++ b/lib/stdlib/doc/src/ref_man.xml
@@ -93,6 +93,7 @@
   <xi:include href="sys.xml"/>
   <xi:include href="timer.xml"/>
   <xi:include href="unicode.xml"/>
+  <xi:include href="uri_string.xml"/>
   <xi:include href="win32reg.xml"/>
   <xi:include href="zip.xml"/>
 </application>
diff --git a/lib/stdlib/doc/src/specs.xml b/lib/stdlib/doc/src/specs.xml
index 45b207b13d..d559adf9b6 100644
--- a/lib/stdlib/doc/src/specs.xml
+++ b/lib/stdlib/doc/src/specs.xml
@@ -60,6 +60,7 @@
   <xi:include href="../specs/specs_sys.xml"/>
   <xi:include href="../specs/specs_timer.xml"/>
   <xi:include href="../specs/specs_unicode.xml"/>
+  <xi:include href="../specs/specs_uri_string.xml"/>
   <xi:include href="../specs/specs_win32reg.xml"/>
   <xi:include href="../specs/specs_zip.xml"/>
 </specs>
diff --git a/lib/stdlib/doc/src/unicode.xml b/lib/stdlib/doc/src/unicode.xml
index e86f45431f..d822aca89c 100644
--- a/lib/stdlib/doc/src/unicode.xml
+++ b/lib/stdlib/doc/src/unicode.xml
@@ -239,8 +239,13 @@
               <c><anno>InEncoding</anno></c>.</p>
           </item>
         </list>
-        <p>Only when <c><anno>InEncoding</anno></c> is one of the UTF
-          encodings, integers in the list are allowed to be &gt; 255.</p>
+	<p>
+	  Note that integers in the list always represent code points
+	  regardless of <c><anno>InEncoding</anno></c> passed. If
+	  <c><anno>InEncoding</anno> latin1</c> is passed, only code
+	  points &lt; 256 are allowed; otherwise, all valid unicode code
+	  points are allowed.
+	</p>
         <p>If <c><anno>InEncoding</anno></c> is <c>latin1</c>, parameter
           <c><anno>Data</anno></c> corresponds to the <c>iodata()</c> type,
           but for <c>unicode</c>, parameter <c><anno>Data</anno></c> can
diff --git a/lib/stdlib/doc/src/unicode_usage.xml b/lib/stdlib/doc/src/unicode_usage.xml
index ff1f864e22..789e063c12 100644
--- a/lib/stdlib/doc/src/unicode_usage.xml
+++ b/lib/stdlib/doc/src/unicode_usage.xml
@@ -857,6 +857,10 @@ Eshell V5.10.1  (abort with ^G)
     <section>
       <marker id="notes-about-raw-filenames"/>
       <title>Notes About Raw Filenames</title>
+      <note><p>
+	Note that raw filenames <em>not</em> necessarily are encoded the
+	same way as on the OS level.
+      </p></note>
       <p>Raw filenames were introduced together with Unicode filename support
         in ERTS 5.8.2 (Erlang/OTP R14B01). The reason &quot;raw
         filenames&quot; were introduced in the system was
diff --git a/lib/stdlib/doc/src/uri_string.xml b/lib/stdlib/doc/src/uri_string.xml
new file mode 100644
index 0000000000..21f470e763
--- /dev/null
+++ b/lib/stdlib/doc/src/uri_string.xml
@@ -0,0 +1,326 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!DOCTYPE erlref SYSTEM "erlref.dtd">
+
+<erlref>
+  <header>
+    <copyright>
+      <year>2017</year><year>2017</year>
+      <holder>Ericsson AB. All Rights Reserved.</holder>
+    </copyright>
+    <legalnotice>
+      Licensed under the Apache License, Version 2.0 (the "License");
+      you may not use this file except in compliance with the License.
+      You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+      Unless required by applicable law or agreed to in writing, software
+      distributed under the License is distributed on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+      See the License for the specific language governing permissions and
+      limitations under the License.
+    </legalnotice>
+
+    <title>uri_string</title>
+    <prepared>Péter Dimitrov</prepared>
+    <docno>1</docno>
+    <date>2017-10-24</date>
+    <rev>A</rev>
+  </header>
+  <module>uri_string</module>
+  <modulesummary>URI processing functions.</modulesummary>
+  <description>
+    <p>This module contains functions for parsing and handling URIs
+    (<url href="https://www.ietf.org/rfc/rfc3986.txt">RFC 3986</url>) and
+    form-urlencoded query strings (<url href="https://www.w3.org/TR/html5/forms.html">HTML5</url>).
+    </p>
+    <p>A URI is an identifier consisting of a sequence of characters   matching the syntax
+    rule named <em>URI</em> in <url href="https://www.ietf.org/rfc/rfc3986.txt">RFC 3986</url>.
+    </p>
+    <p>  The generic URI syntax consists of a hierarchical sequence of components referred
+    to as the scheme, authority, path, query, and fragment:</p>
+    <pre>
+    URI         = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
+    hier-part   = "//" authority path-abempty
+                   / path-absolute
+                   / path-rootless
+                   / path-empty
+    scheme      = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
+    authority   = [ userinfo "@" ] host [ ":" port ]
+    userinfo    = *( unreserved / pct-encoded / sub-delims / ":" )
+
+    reserved    = gen-delims / sub-delims
+    gen-delims  = ":" / "/" / "?" / "#" / "[" / "]" / "@"
+    sub-delims  = "!" / "$" / "&amp;" / "'" / "(" / ")"
+                / "*" / "+" / "," / ";" / "="
+
+    unreserved  = ALPHA / DIGIT / "-" / "." / "_" / "~"
+    </pre><br></br>
+    <p>The interpretation of a URI depends only on the characters used and not on how those
+    characters are represented in a network protocol.</p>
+    <p>The functions implemented by this module cover the following use cases:</p>
+    <list type="bulleted">
+      <item>Parsing URIs into its components and returing a map<br></br>
+      <seealso marker="#parse/1"><c>parse/1</c></seealso>
+      </item>
+      <item>Recomposing a map of URI components into a URI string<br></br>
+      <seealso marker="#recompose/1"><c>recompose/1</c></seealso>
+      </item>
+      <item>Changing inbound binary and percent-encoding of URIs<br></br>
+      <seealso marker="#transcode/2"><c>transcode/2</c></seealso>
+      </item>
+      <item>Transforming URIs into a normalized form<br></br>
+      <seealso marker="#normalize/1"><c>normalize/1</c></seealso>
+      </item>
+      <item>Composing form-urlencoded query strings from a list of key-value pairs<br></br>
+      <seealso marker="#compose_query/1"><c>compose_query/1</c></seealso><br></br>
+      <seealso marker="#compose_query/2"><c>compose_query/2</c></seealso>
+      </item>
+      <item>Dissecting form-urlencoded query strings into a list of key-value pairs<br></br>
+      <seealso marker="#dissect_query/1"><c>dissect_query/1</c></seealso>
+      </item>
+    </list>
+    <p>There are four different encodings present during the handling of URIs:</p>
+    <list type="bulleted">
+      <item>Inbound binary encoding in binaries</item>
+      <item>Inbound percent-encoding in lists and binaries</item>
+      <item>Outbound binary encoding in binaries</item>
+      <item>Outbound percent-encoding in lists and binaries</item>
+    </list>
+    <p>Functions with <c>uri_string()</c> argument accept lists, binaries and
+    mixed lists (lists with binary elements) as input type. All of the functions but
+    <c>transcode/2</c> expects input as lists of unicode codepoints, UTF-8 encoded binaries
+    and UTF-8 percent-encoded URI parts ("%C3%B6" corresponds to the unicode character "ö").</p>
+    <p>Unless otherwise specified the return value type and encoding are the same as the input
+    type and encoding. That is, binary input returns binary output, list input returns a list
+    output but mixed input returns list output.</p>
+    <p>In case of lists there is only percent-encoding. In binaries, however, both binary encoding
+    and percent-encoding shall be considered. <c>transcode/2</c> provides the means to convert
+    between the supported encodings, it takes a <c>uri_string()</c> and a list of options
+    specifying inbound and outbound encodings.</p>
+    <p><url href="https://www.ietf.org/rfc/rfc3986.txt">RFC 3986</url> does not mandate any specific
+    character encoding and it is usually defined by the protocol or surrounding text. This library
+    takes the same assumption, binary and percent-encoding are handled as one configuration unit,
+    they cannot be set to different values.</p>
+  </description>
+
+  <datatypes>
+    <datatype>
+      <name name="error"/>
+      <desc>
+        <p>Error tuple indicating the type of error. Possible values of the second component:</p>
+	<list type="bulleted">
+	  <item><c>invalid_character</c></item>
+	  <item><c>invalid_encoding</c></item>
+	  <item><c>invalid_input</c></item>
+	  <item><c>invalid_map</c></item>
+	  <item><c>invalid_percent_encoding</c></item>
+	  <item><c>invalid_scheme</c></item>
+	  <item><c>invalid_uri</c></item>
+	  <item><c>invalid_utf8</c></item>
+	  <item><c>missing_value</c></item>
+	</list>
+	<p>The third component is a term providing additional information about the
+	cause of the error.</p>
+      </desc>
+    </datatype>
+    <datatype>
+      <name name="uri_map"/>
+      <desc>
+        <p>Map holding the main components of a URI.</p>
+      </desc>
+    </datatype>
+    <datatype>
+      <name name="uri_string"/>
+      <desc>
+        <p>List of unicode codepoints, a UTF-8 encoded binary, or a mix of the two,
+        representing an <url href="https://www.ietf.org/rfc/rfc3986.txt">RFC 3986</url>
+	compliant URI (<em>percent-encoded form</em>).
+        A URI is a sequence of characters from a very limited set: the letters of
+        the basic Latin alphabet, digits, and a few special characters.</p>
+      </desc>
+    </datatype>
+  </datatypes>
+
+  <funcs>
+
+    <func>
+      <name name="compose_query" arity="1"/>
+      <fsummary>Compose urlencoded query string.</fsummary>
+      <desc>
+        <p>Composes a form-urlencoded <c><anno>QueryString</anno></c> based on a
+	<c><anno>QueryList</anno></c>, a list of non-percent-encoded key-value pairs.
+        Form-urlencoding is defined in section
+	4.10.22.6 of the <url href="https://www.w3.org/TR/html5/forms.html">HTML5</url>
+	specification.
+	</p>
+	<p>See also the opposite operation <seealso marker="#dissect_query/1">
+	<c>dissect_query/1</c></seealso>.
+	</p>
+        <p><em>Example:</em></p>
+        <pre>
+1> <input>uri_string:compose_query([{"foo bar","1"},{"city","örebro"}]).</input>
+<![CDATA["foo+bar=1&city=%C3%B6rebro"]]>
+2> <![CDATA[uri_string:compose_query([{<<"foo bar">>,<<"1">>},
+2> {<<"city">>,<<"örebro"/utf8>>}]).]]>
+<![CDATA[<<"foo+bar=1&city=%C3%B6rebro">>]]>
+	</pre>
+      </desc>
+    </func>
+
+    <func>
+      <name name="compose_query" arity="2"/>
+      <fsummary>Compose urlencoded query string.</fsummary>
+      <desc>
+        <p>Same as <c>compose_query/1</c> but with an additional
+	<c><anno>Options</anno></c> parameter, that controls the encoding ("charset")
+	used by the encoding algorithm. There are two supported encodings: <c>utf8</c>
+	(or <c>unicode</c>) and <c>latin1</c>.
+	</p>
+	<p>Each character in the entry's name and value that cannot be expressed using
+	the selected character encoding, is replaced by a string consisting of a U+0026
+	AMPERSAND character (<![CDATA[&]]>), a "#" (U+0023) character, one or more ASCII
+	digits representing the Unicode code point of the character in base ten, and
+	finally	a ";" (U+003B) character.
+	</p>
+	<p>Bytes that are out of the range 0x2A, 0x2D, 0x2E, 0x30 to 0x39, 0x41 to 0x5A, 0x5F,
+	0x61 to 0x7A, are percent-encoded (U+0025 PERCENT SIGN character (%) followed by
+	uppercase ASCII hex digits representing the hexadecimal value of the byte).
+	</p>
+	<p>See also the opposite operation <seealso marker="#dissect_query/1">
+	<c>dissect_query/1</c></seealso>.
+	</p>
+        <p><em>Example:</em></p>
+        <pre>
+1> <input>uri_string:compose_query([{"foo bar","1"},{"city","örebro"}],</input>
+1> [{encoding, latin1}]).
+<![CDATA["foo+bar=1&city=%F6rebro"
+2> uri_string:compose_query([{<<"foo bar">>,<<"1">>},
+2> {<<"city">>,<<"東京"/utf8>>}], [{encoding, latin1}]).]]>
+<![CDATA[<<"foo+bar=1&city=%26%2326481%3B%26%2320140%3B">>]]>
+	</pre>
+      </desc>
+    </func>
+
+    <func>
+      <name name="dissect_query" arity="1"/>
+      <fsummary>Dissect query string.</fsummary>
+      <desc>
+        <p>Dissects an urlencoded <c><anno>QueryString</anno></c> and returns a
+	<c><anno>QueryList</anno></c>, a list of non-percent-encoded key-value pairs.
+        Form-urlencoding is defined in section
+	4.10.22.6 of the <url href="https://www.w3.org/TR/html5/forms.html">HTML5</url>
+	specification.
+	</p>
+	<p>It is not as strict for its input as the decoding algorithm defined by
+	<url href="https://www.w3.org/TR/html5/forms.html">HTML5</url>
+	and accepts all unicode characters.</p>
+	<p>See also the opposite operation <seealso marker="#compose_query/1">
+	<c>compose_query/1</c></seealso>.
+	</p>
+        <p><em>Example:</em></p>
+        <pre>
+1> <input><![CDATA[uri_string:dissect_query("foo+bar=1&city=%C3%B6rebro").]]></input>
+[{"foo bar","1"},{"city","örebro"}]
+2> <![CDATA[uri_string:dissect_query(<<"foo+bar=1&city=%26%2326481%3B%26%2320140%3B">>).]]>
+<![CDATA[[{<<"foo bar">>,<<"1">>},
+ {<<"city">>,<<230,157,177,228,186,172>>}] ]]>
+	</pre>
+      </desc>
+    </func>
+
+    <func>
+      <name name="normalize" arity="1"/>
+      <fsummary>Syntax-based normalization.</fsummary>
+      <desc>
+        <p>Transforms <c><anno>URIString</anno></c> into a normalized form
+	using Syntax-Based Normalization as defined by
+	<url href="https://www.ietf.org/rfc/rfc3986.txt">RFC 3986</url>.</p>
+	<p>This function implements case normalization, percent-encoding
+	normalization, path segment normalization and scheme based normalization
+	for HTTP(S) with basic support for FTP, SSH, SFTP and TFTP.</p>
+        <p><em>Example:</em></p>
+        <pre>
+1> <input>uri_string:normalize("/a/b/c/./../../g").</input>
+"/a/g"
+2> <![CDATA[uri_string:normalize(<<"mid/content=5/../6">>).]]>
+<![CDATA[<<"mid/6">>]]>
+3> uri_string:normalize("http://localhost:80").
+"https://localhost/"
+	</pre>
+      </desc>
+    </func>
+
+    <func>
+      <name name="parse" arity="1"/>
+      <fsummary>Parse URI into a map.</fsummary>
+      <desc>
+        <p>Parses an <url href="https://www.ietf.org/rfc/rfc3986.txt">RFC 3986</url>
+	compliant <c>uri_string()</c> into a <c>uri_map()</c>, that holds the parsed
+	components of the <c>URI</c>.
+	If parsing fails, an error tuple is returned.</p>
+	<p>See also the opposite operation <seealso marker="#recompose/1">
+	<c>recompose/1</c></seealso>.</p>
+        <p><em>Example:</em></p>
+        <pre>
+1> <input>uri_string:parse("foo://[email protected]:8042/over/there?name=ferret#nose").</input>
+#{fragment => "nose",host => "example.com",
+  path => "/over/there",port => 8042,query => "name=ferret",
+  scheme => foo,userinfo => "user"}
+2> <![CDATA[uri_string:parse(<<"foo://[email protected]:8042/over/there?name=ferret">>).]]>
+<![CDATA[#{host => <<"example.com">>,path => <<"/over/there">>,
+  port => 8042,query => <<"name=ferret">>,scheme => <<"foo">>,
+  userinfo => <<"user">>}]]>
+	</pre>
+      </desc>
+    </func>
+
+    <func>
+      <name name="recompose" arity="1"/>
+      <fsummary>Recompose URI.</fsummary>
+      <desc>
+        <p>Creates an <url href="https://www.ietf.org/rfc/rfc3986.txt">RFC 3986</url> compliant
+	<c><anno>URIString</anno></c> (percent-encoded), based on the components of
+	<c><anno>URIMap</anno></c>.
+	If the <c><anno>URIMap</anno></c> is invalid, an error tuple is returned.</p>
+	<p>See also the opposite operation <seealso marker="#parse/1">
+	<c>parse/1</c></seealso>.</p>
+        <p><em>Example:</em></p>
+        <pre>
+1> <input>URIMap = #{fragment => "nose", host => "example.com", path => "/over/there",</input>
+1> port => 8042, query => "name=ferret", scheme => "foo", userinfo => "user"}.
+#{fragment => "top",host => "example.com",
+  path => "/over/there",port => 8042,query => "?name=ferret",
+  scheme => foo,userinfo => "user"}
+
+2> <input>uri_string:recompose(URIMap).</input>
+"foo://example.com:8042/over/there?name=ferret#nose"</pre>
+      </desc>
+    </func>
+
+    <func>
+      <name name="transcode" arity="2"/>
+      <fsummary>Transcode URI.</fsummary>
+      <desc>
+        <p>Transcodes an <url href="https://www.ietf.org/rfc/rfc3986.txt">RFC 3986</url>
+	compliant <c><anno>URIString</anno></c>,
+	where <c><anno>Options</anno></c> is a list of tagged tuples, specifying the inbound
+	(<c>in_encoding</c>) and outbound (<c>out_encoding</c>) encodings. <c>in_encoding</c>
+	and <c>out_encoding</c> specifies both binary encoding and percent-encoding for the
+	input and output data. Mixed encoding, where binary encoding is not the same as
+	percent-encoding, is not supported.
+	If an argument is invalid, an error tuple is returned.</p>
+        <p><em>Example:</em></p>
+        <pre>
+1> <input><![CDATA[uri_string:transcode(<<"foo%00%00%00%F6bar"/utf32>>,]]></input>
+1> [{in_encoding, utf32},{out_encoding, utf8}]).
+<![CDATA[<<"foo%C3%B6bar"/utf8>>]]>
+2> uri_string:transcode("foo%F6bar", [{in_encoding, latin1},
+2> {out_encoding, utf8}]).
+"foo%C3%B6bar"
+	</pre>
+      </desc>
+    </func>
+
+  </funcs>
+</erlref>
diff --git a/lib/stdlib/doc/src/user_guide.gif b/lib/stdlib/doc/src/user_guide.gif
deleted file mode 100644
index e6275a803d..0000000000
--- a/lib/stdlib/doc/src/user_guide.gif
+++ /dev/null
diff --git a/lib/stdlib/src/Makefile b/lib/stdlib/src/Makefile
index bf836203ec..8b156929d7 100644
--- a/lib/stdlib/src/Makefile
+++ b/lib/stdlib/src/Makefile
@@ -121,6 +121,7 @@ MODULES= \
 	timer \
 	unicode \
 	unicode_util \
+	uri_string \
 	win32reg \
 	zip
 
diff --git a/lib/stdlib/src/base64.erl b/lib/stdlib/src/base64.erl
index 5885745fb1..6ea4147abf 100644
--- a/lib/stdlib/src/base64.erl
+++ b/lib/stdlib/src/base64.erl
@@ -24,22 +24,11 @@
 -export([encode/1, decode/1, mime_decode/1,
 	 encode_to_string/1, decode_to_string/1, mime_decode_to_string/1]).
 
-%%-------------------------------------------------------------------------
 %% The following type is a subtype of string() for return values
 %% of (some) functions of this module.
-%%-------------------------------------------------------------------------
-
 -type ascii_string() :: [1..255].
 -type ascii_binary() :: binary().
 
-%%-------------------------------------------------------------------------
-%% encode_to_string(ASCII) -> Base64String
-%%	ASCII - string() | binary()
-%%	Base64String - string()
-%%                                   
-%% Description: Encodes a plain ASCII string (or binary) into base64.
-%%-------------------------------------------------------------------------
-
 -spec encode_to_string(Data) -> Base64String when
       Data :: ascii_string() | ascii_binary(),
       Base64String :: ascii_string().
@@ -47,107 +36,89 @@
 encode_to_string(Bin) when is_binary(Bin) ->
     encode_to_string(binary_to_list(Bin));
 encode_to_string(List) when is_list(List) ->
-    encode_l(List).
-
-%%-------------------------------------------------------------------------
-%% encode(ASCII) -> Base64
-%%	ASCII - string() | binary()
-%%	Base64 - binary()
-%%                                   
-%% Description: Encodes a plain ASCII string (or binary) into base64.
-%%-------------------------------------------------------------------------
+    encode_list_to_string(List).
 
 -spec encode(Data) -> Base64 when
       Data :: ascii_string() | ascii_binary(),
       Base64 :: ascii_binary().
 
 encode(Bin) when is_binary(Bin) ->
-    encode_binary(Bin);
+    encode_binary(Bin, <<>>);
 encode(List) when is_list(List) ->
-    list_to_binary(encode_l(List)).
+    encode_list(List, <<>>).
 
--spec encode_l(ascii_string()) -> ascii_string().
-
-encode_l([]) ->
+encode_list_to_string([]) ->
     [];
-encode_l([A]) ->
-    [b64e(A bsr 2),
-     b64e((A band 3) bsl 4), $=, $=];
-encode_l([A,B]) ->
-    [b64e(A bsr 2),
-     b64e(((A band 3) bsl 4) bor (B bsr 4)), 
-     b64e((B band 15) bsl 2), $=];
-encode_l([A,B,C|Ls]) ->
-    BB = (A bsl 16) bor (B bsl 8) bor C,
+encode_list_to_string([B1]) ->
+    [b64e(B1 bsr 2),
+     b64e((B1 band 3) bsl 4), $=, $=];
+encode_list_to_string([B1,B2]) ->
+    [b64e(B1 bsr 2),
+     b64e(((B1 band 3) bsl 4) bor (B2 bsr 4)),
+     b64e((B2 band 15) bsl 2), $=];
+encode_list_to_string([B1,B2,B3|Ls]) ->
+    BB = (B1 bsl 16) bor (B2 bsl 8) bor B3,
     [b64e(BB bsr 18),
      b64e((BB bsr 12) band 63), 
      b64e((BB bsr 6) band 63),
-     b64e(BB band 63) | encode_l(Ls)].
-
-encode_binary(Bin) ->
-    Split = 3*(byte_size(Bin) div 3),
-    <<Main0:Split/binary,Rest/binary>> = Bin,
-    Main = << <<(b64e(C)):8>> || <<C:6>> <= Main0 >>,
-    case Rest of
-	<<A:6,B:6,C:4>> ->
-	    <<Main/binary,(b64e(A)):8,(b64e(B)):8,(b64e(C bsl 2)):8,$=:8>>;
-	<<A:6,B:2>> ->
-	    <<Main/binary,(b64e(A)):8,(b64e(B bsl 4)):8,$=:8,$=:8>>;
-	<<>> ->
-	    Main
-    end.
+     b64e(BB band 63) | encode_list_to_string(Ls)].
 
-%%-------------------------------------------------------------------------
-%% mime_decode(Base64) -> ASCII
-%% decode(Base64) -> ASCII
-%%	Base64 - string() | binary()
-%%	ASCII - binary()
-%%                                    
-%% Description: Decodes an base64 encoded string to plain ASCII.
-%% mime_decode strips away all characters not Base64 before converting,
-%% whereas decode crashes if an illegal character is found
-%%-------------------------------------------------------------------------
+encode_binary(<<>>, A) ->
+    A;
+encode_binary(<<B1:8>>, A) ->
+    <<A/bits,(b64e(B1 bsr 2)):8,(b64e((B1 band 3) bsl 4)):8,$=:8,$=:8>>;
+encode_binary(<<B1:8, B2:8>>, A) ->
+    <<A/bits,(b64e(B1 bsr 2)):8,
+      (b64e(((B1 band 3) bsl 4) bor (B2 bsr 4))):8,
+      (b64e((B2 band 15) bsl 2)):8, $=:8>>;
+encode_binary(<<B1:8, B2:8, B3:8, Ls/bits>>, A) ->
+    BB = (B1 bsl 16) bor (B2 bsl 8) bor B3,
+    encode_binary(Ls,
+                  <<A/bits,(b64e(BB bsr 18)):8,
+                    (b64e((BB bsr 12) band 63)):8,
+                    (b64e((BB bsr 6) band 63)):8,
+                    (b64e(BB band 63)):8>>).
+
+encode_list([], A) ->
+    A;
+encode_list([B1], A) ->
+    <<A/bits,(b64e(B1 bsr 2)):8,(b64e((B1 band 3) bsl 4)):8,$=:8,$=:8>>;
+encode_list([B1,B2], A) ->
+    <<A/bits,(b64e(B1 bsr 2)):8,
+      (b64e(((B1 band 3) bsl 4) bor (B2 bsr 4))):8,
+      (b64e((B2 band 15) bsl 2)):8, $=:8>>;
+encode_list([B1,B2,B3|Ls], A) ->
+    BB = (B1 bsl 16) bor (B2 bsl 8) bor B3,
+    encode_list(Ls,
+                <<A/bits,(b64e(BB bsr 18)):8,
+                  (b64e((BB bsr 12) band 63)):8,
+                  (b64e((BB bsr 6) band 63)):8,
+                  (b64e(BB band 63)):8>>).
+
+%% mime_decode strips away all characters not Base64 before
+%% converting, whereas decode crashes if an illegal character is found
 
 -spec decode(Base64) -> Data when
       Base64 :: ascii_string() | ascii_binary(),
       Data :: ascii_binary().
 
 decode(Bin) when is_binary(Bin) ->
-    decode_binary(<<>>, Bin);
+    decode_binary(Bin, <<>>);
 decode(List) when is_list(List) ->
-    list_to_binary(decode_l(List)).
+    decode_list(List, <<>>).
 
 -spec mime_decode(Base64) -> Data when
       Base64 :: ascii_string() | ascii_binary(),
       Data :: ascii_binary().
 
 mime_decode(Bin) when is_binary(Bin) ->
-    mime_decode_binary(<<>>, Bin);
+    mime_decode_binary(Bin, <<>>);
 mime_decode(List) when is_list(List) ->
-    mime_decode(list_to_binary(List)).
-
--spec decode_l(ascii_string()) -> ascii_string().
-
-decode_l(List) ->
-    L = strip_spaces(List, []),
-    decode(L, []).
-
--spec mime_decode_l(ascii_string()) -> ascii_string().
+    mime_decode_list(List, <<>>).
 
-mime_decode_l(List) ->
-    L = strip_illegal(List, [], 0),
-    decode(L, []).
-
-%%-------------------------------------------------------------------------
-%% mime_decode_to_string(Base64) -> ASCII
-%% decode_to_string(Base64) -> ASCII
-%%	Base64 - string() | binary()
-%%	ASCII - binary()
-%%
-%% Description: Decodes an base64 encoded string to plain ASCII.
-%% mime_decode strips away all characters not Base64 before converting,
-%% whereas decode crashes if an illegal character is found
-%%-------------------------------------------------------------------------
+%% mime_decode_to_string strips away all characters not Base64 before
+%% converting, whereas decode_to_string crashes if an illegal
+%% character is found
 
 -spec decode_to_string(Base64) -> DataString when
       Base64 :: ascii_string() | ascii_binary(),
@@ -156,7 +127,7 @@ mime_decode_l(List) ->
 decode_to_string(Bin) when is_binary(Bin) ->
     decode_to_string(binary_to_list(Bin));
 decode_to_string(List) when is_list(List) ->
-    decode_l(List).
+    decode_list_to_string(List).
 
 -spec mime_decode_to_string(Base64) -> DataString when
       Base64 :: ascii_string() | ascii_binary(),
@@ -165,202 +136,326 @@ decode_to_string(List) when is_list(List) ->
 mime_decode_to_string(Bin) when is_binary(Bin) ->
     mime_decode_to_string(binary_to_list(Bin));
 mime_decode_to_string(List) when is_list(List) ->
-    mime_decode_l(List).
-
-%% One-based decode map.
--define(DECODE_MAP,
-	{bad,bad,bad,bad,bad,bad,bad,bad,ws,ws,bad,bad,ws,bad,bad, %1-15
-	 bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad, %16-31
-	 ws,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,62,bad,bad,bad,63, %32-47
-	 52,53,54,55,56,57,58,59,60,61,bad,bad,bad,eq,bad,bad, %48-63
-	 bad,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,
-	 15,16,17,18,19,20,21,22,23,24,25,bad,bad,bad,bad,bad,
-	 bad,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,
-	 41,42,43,44,45,46,47,48,49,50,51,bad,bad,bad,bad,bad,
-	 bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
-	 bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
-	 bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
-	 bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
-	 bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
-	 bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
-	 bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
-	 bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad}).
-
-decode_binary(Result0, <<C:8,T0/bits>>) ->
-    case element(C, ?DECODE_MAP) of
-	bad ->
-	    erlang:error({badarg,C});
-	ws ->
-	    decode_binary(Result0, T0);
-	eq ->
-	    case strip_ws(T0) of
-		<<$=:8,T/binary>> ->
-		    <<>> = strip_ws(T),
-		    Split = byte_size(Result0) - 1,
-		    <<Result:Split/bytes,_:4>> = Result0,
-		    Result;
-		T ->
-		    <<>> = strip_ws(T),
-		    Split = byte_size(Result0) - 1,
-		    <<Result:Split/bytes,_:2>> = Result0,
-		    Result
-	    end;
-	Bits ->
-	    decode_binary(<<Result0/bits,Bits:6>>, T0)
-    end;
-decode_binary(Result, <<>>) ->
-    true = is_binary(Result),
-    Result.
+    mime_decode_list_to_string(List).
 
 %% Skipping pad character if not at end of string. Also liberal about
 %% excess padding and skipping of other illegal (non-base64 alphabet)
 %% characters. See section 3.3 of RFC4648
-mime_decode_binary(Result, <<0:8,T/bits>>) ->
-    mime_decode_binary(Result, T);
-mime_decode_binary(Result0, <<C:8,T/bits>>) ->
-    case element(C, ?DECODE_MAP) of
-        Bits when is_integer(Bits) ->
-            mime_decode_binary(<<Result0/bits,Bits:6>>, T);
+mime_decode_list([0 | Cs], A) ->
+    mime_decode_list(Cs, A);
+mime_decode_list([C1 | Cs], A) ->
+    case b64d(C1) of
+        B1 when is_integer(B1) -> mime_decode_list(Cs, A, B1);
+        _ -> mime_decode_list(Cs, A)  % eq is padding
+    end;
+mime_decode_list([], A) ->
+    A.
+
+mime_decode_list([0 | Cs], A, B1) ->
+    mime_decode_list(Cs, A, B1);
+mime_decode_list([C2 | Cs], A, B1) ->
+    case b64d(C2) of
+        B2 when is_integer(B2) ->
+            mime_decode_list(Cs, A, B1, B2);
+        _ -> mime_decode_list(Cs, A, B1) % eq is padding
+    end.
+
+mime_decode_list([0 | Cs], A, B1, B2) ->
+    mime_decode_list(Cs, A, B1, B2);
+mime_decode_list([C3 | Cs], A, B1, B2) ->
+    case b64d(C3) of
+        B3 when is_integer(B3) ->
+            mime_decode_list(Cs, A, B1, B2, B3);
+        eq=B3 ->
+            mime_decode_list_after_eq(Cs, A, B1, B2, B3);
+        _ -> mime_decode_list(Cs, A, B1, B2)
+    end.
+
+mime_decode_list([0 | Cs], A, B1, B2, B3) ->
+    mime_decode_list(Cs, A, B1, B2, B3);
+mime_decode_list([C4 | Cs], A, B1, B2, B3) ->
+    case b64d(C4) of
+        B4 when is_integer(B4) ->
+            mime_decode_list(Cs, <<A/bits,B1:6,B2:6,B3:6,B4:6>>);
         eq ->
-            mime_decode_binary_after_eq(Result0, T, false);
-        _ ->
-            mime_decode_binary(Result0, T)
+            mime_decode_list_after_eq(Cs, A, B1, B2, B3);
+        _ -> mime_decode_list(Cs, A, B1, B2, B3)
+    end.
+
+mime_decode_list_after_eq([0 | Cs], A, B1, B2, B3) ->
+    mime_decode_list_after_eq(Cs, A, B1, B2, B3);
+mime_decode_list_after_eq([C | Cs], A, B1, B2, B3) ->
+    case b64d(C) of
+        B when is_integer(B) ->
+            %% More valid data, skip the eq as invalid
+            case B3 of
+                eq -> mime_decode_list(Cs, A, B1, B2, B);
+                _ -> mime_decode_list(Cs, <<A/bits,B1:6,B2:6,B3:6,B:6>>)
+            end;
+        _ -> mime_decode_list_after_eq(Cs, A, B1, B2, B3)
     end;
-mime_decode_binary(Result, _) ->
-    true = is_binary(Result),
-    Result.
-
-mime_decode_binary_after_eq(Result, <<0:8,T/bits>>, Eq) ->
-    mime_decode_binary_after_eq(Result, T, Eq);
-mime_decode_binary_after_eq(Result0, <<C:8,T/bits>>, Eq) ->
-    case element(C, ?DECODE_MAP) of
-        bad ->
-            mime_decode_binary_after_eq(Result0, T, Eq);
-        ws ->
-            mime_decode_binary_after_eq(Result0, T, Eq);
+mime_decode_list_after_eq([], A, B1, B2, eq) ->
+    <<A/bits,B1:6,(B2 bsr 4):2>>;
+mime_decode_list_after_eq([], A, B1, B2, B3) ->
+    <<A/bits,B1:6,B2:6,(B3 bsr 2):4>>.
+
+mime_decode_binary(<<0:8, Cs/bits>>, A) ->
+    mime_decode_binary(Cs, A);
+mime_decode_binary(<<C1:8, Cs/bits>>, A) ->
+    case b64d(C1) of
+        B1 when is_integer(B1) -> mime_decode_binary(Cs, A, B1);
+        _ -> mime_decode_binary(Cs, A)  % eq is padding
+    end;
+mime_decode_binary(<<>>, A) ->
+    A.
+
+mime_decode_binary(<<0:8, Cs/bits>>, A, B1) ->
+    mime_decode_binary(Cs, A, B1);
+mime_decode_binary(<<C2:8, Cs/bits>>, A, B1) ->
+    case b64d(C2) of
+        B2 when is_integer(B2) ->
+            mime_decode_binary(Cs, A, B1, B2);
+        _ -> mime_decode_binary(Cs, A, B1) % eq is padding
+    end.
+
+mime_decode_binary(<<0:8, Cs/bits>>, A, B1, B2) ->
+    mime_decode_binary(Cs, A, B1, B2);
+mime_decode_binary(<<C3:8, Cs/bits>>, A, B1, B2) ->
+    case b64d(C3) of
+        B3 when is_integer(B3) ->
+            mime_decode_binary(Cs, A, B1, B2, B3);
+        eq=B3 ->
+            mime_decode_binary_after_eq(Cs, A, B1, B2, B3);
+        _ -> mime_decode_binary(Cs, A, B1, B2)
+    end.
+
+mime_decode_binary(<<0:8, Cs/bits>>, A, B1, B2, B3) ->
+    mime_decode_binary(Cs, A, B1, B2, B3);
+mime_decode_binary(<<C4:8, Cs/bits>>, A, B1, B2, B3) ->
+    case b64d(C4) of
+        B4 when is_integer(B4) ->
+            mime_decode_binary(Cs, <<A/bits,B1:6,B2:6,B3:6,B4:6>>);
         eq ->
-            mime_decode_binary_after_eq(Result0, T, true);
-        Bits when is_integer(Bits) ->
+            mime_decode_binary_after_eq(Cs, A, B1, B2, B3);
+        _ -> mime_decode_binary(Cs, A, B1, B2, B3)
+    end.
+
+mime_decode_binary_after_eq(<<0:8, Cs/bits>>, A, B1, B2, B3) ->
+    mime_decode_binary_after_eq(Cs, A, B1, B2, B3);
+mime_decode_binary_after_eq(<<C:8, Cs/bits>>, A, B1, B2, B3) ->
+    case b64d(C) of
+        B when is_integer(B) ->
             %% More valid data, skip the eq as invalid
-            mime_decode_binary(<<Result0/bits,Bits:6>>, T)
+            case B3 of
+                eq -> mime_decode_binary(Cs, A, B1, B2, B);
+                _ -> mime_decode_binary(Cs, <<A/bits,B1:6,B2:6,B3:6,B:6>>)
+            end;
+        _ -> mime_decode_binary_after_eq(Cs, A, B1, B2, B3)
+    end;
+mime_decode_binary_after_eq(<<>>, A, B1, B2, eq) ->
+    <<A/bits,B1:6,(B2 bsr 4):2>>;
+mime_decode_binary_after_eq(<<>>, A, B1, B2, B3) ->
+    <<A/bits,B1:6,B2:6,(B3 bsr 2):4>>.
+
+mime_decode_list_to_string([0 | Cs]) ->
+    mime_decode_list_to_string(Cs);
+mime_decode_list_to_string([C1 | Cs]) ->
+    case b64d(C1) of
+        B1 when is_integer(B1) -> mime_decode_list_to_string(Cs, B1);
+        _ -> mime_decode_list_to_string(Cs) % eq is padding
     end;
-mime_decode_binary_after_eq(Result0, <<>>, Eq) ->
-    %% No more valid data.
-    case bit_size(Result0) rem 8 of
-        0 ->
-            %% '====' is not uncommon.
-            Result0;
-        4 when Eq ->
-            %% enforce at least one more '=' only ignoring illegals and spacing
-            Split = byte_size(Result0) - 1,
-            <<Result:Split/bytes,_:4>> = Result0,
-            Result;
-        2 ->
-            %% remove 2 bits
-            Split = byte_size(Result0) - 1,
-            <<Result:Split/bytes,_:2>> = Result0,
-            Result
+mime_decode_list_to_string([]) ->
+    [].
+
+mime_decode_list_to_string([0 | Cs], B1) ->
+    mime_decode_list_to_string(Cs, B1);
+mime_decode_list_to_string([C2 | Cs], B1) ->
+    case b64d(C2) of
+        B2 when is_integer(B2) ->
+            mime_decode_list_to_string(Cs, B1, B2);
+        _ -> mime_decode_list_to_string(Cs, B1) % eq is padding
     end.
 
-decode([], A) -> A;
-decode([$=,$=,C2,C1|Cs], A) ->
-    Bits2x6 = (b64d(C1) bsl 18) bor (b64d(C2) bsl 12),
-    Octet1 = Bits2x6 bsr 16,
-    decode(Cs, [Octet1|A]);
-decode([$=,C3,C2,C1|Cs], A) ->
-    Bits3x6 = (b64d(C1) bsl 18) bor (b64d(C2) bsl 12)
-	bor (b64d(C3) bsl 6),
-    Octet1 = Bits3x6 bsr 16,
-    Octet2 = (Bits3x6 bsr 8) band 16#ff,
-    decode(Cs, [Octet1,Octet2|A]);
-decode([C4,C3,C2,C1| Cs], A) ->
-    Bits4x6 = (b64d(C1) bsl 18) bor (b64d(C2) bsl 12)
-	bor (b64d(C3) bsl 6) bor b64d(C4),
-    Octet1 = Bits4x6 bsr 16,
-    Octet2 = (Bits4x6 bsr 8) band 16#ff,
-    Octet3 = Bits4x6 band 16#ff,
-    decode(Cs, [Octet1,Octet2,Octet3|A]).
+mime_decode_list_to_string([0 | Cs], B1, B2) ->
+    mime_decode_list_to_string(Cs, B1, B2);
+mime_decode_list_to_string([C3 | Cs], B1, B2) ->
+    case b64d(C3) of
+        B3 when is_integer(B3) ->
+            mime_decode_list_to_string(Cs, B1, B2, B3);
+        eq=B3 -> mime_decode_list_to_string_after_eq(Cs, B1, B2, B3);
+        _ -> mime_decode_list_to_string(Cs, B1, B2)
+    end.
 
-%%%========================================================================
-%%% Internal functions
-%%%========================================================================
+mime_decode_list_to_string([0 | Cs], B1, B2, B3) ->
+    mime_decode_list_to_string(Cs, B1, B2, B3);
+mime_decode_list_to_string([C4 | Cs], B1, B2, B3) ->
+    case b64d(C4) of
+        B4 when is_integer(B4) ->
+            Bits4x6 = (B1 bsl 18) bor (B2 bsl 12) bor (B3 bsl 6) bor B4,
+            Octet1 = Bits4x6 bsr 16,
+            Octet2 = (Bits4x6 bsr 8) band 16#ff,
+            Octet3 = Bits4x6 band 16#ff,
+            [Octet1, Octet2, Octet3 | mime_decode_list_to_string(Cs)];
+        eq ->
+            mime_decode_list_to_string_after_eq(Cs, B1, B2, B3);
+        _ -> mime_decode_list_to_string(Cs, B1, B2, B3)
+    end.
 
-strip_spaces([], A) -> A;
-strip_spaces([$\s|Cs], A) -> strip_spaces(Cs, A);
-strip_spaces([$\t|Cs], A) -> strip_spaces(Cs, A);
-strip_spaces([$\r|Cs], A) -> strip_spaces(Cs, A);
-strip_spaces([$\n|Cs], A) -> strip_spaces(Cs, A);
-strip_spaces([C|Cs], A) -> strip_spaces(Cs, [C | A]).
-
-strip_ws(<<$\t,T/binary>>) ->
-    strip_ws(T);
-strip_ws(<<$\n,T/binary>>) ->
-    strip_ws(T);
-strip_ws(<<$\r,T/binary>>) ->
-    strip_ws(T);
-strip_ws(<<$\s,T/binary>>) ->
-    strip_ws(T);
-strip_ws(T) -> T.
+mime_decode_list_to_string_after_eq([0 | Cs], B1, B2, B3) ->
+    mime_decode_list_to_string_after_eq(Cs, B1, B2, B3);
+mime_decode_list_to_string_after_eq([C | Cs], B1, B2, B3) ->
+    case b64d(C) of
+        B when is_integer(B) ->
+            %% More valid data, skip the eq as invalid
+            case B3 of
+                eq -> mime_decode_list_to_string(Cs, B1, B2, B);
+                _ ->
+                    Bits4x6 = (B1 bsl 18) bor (B2 bsl 12) bor (B3 bsl 6) bor B,
+                    Octet1 = Bits4x6 bsr 16,
+                    Octet2 = (Bits4x6 bsr 8) band 16#ff,
+                    Octet3 = Bits4x6 band 16#ff,
+                    [Octet1, Octet2, Octet3 | mime_decode_list_to_string(Cs)]
+            end;
+        _ -> mime_decode_list_to_string_after_eq(Cs, B1, B2, B3)
+    end;
+mime_decode_list_to_string_after_eq([], B1, B2, eq) ->
+    binary_to_list(<<B1:6,(B2 bsr 4):2>>);
+mime_decode_list_to_string_after_eq([], B1, B2, B3) ->
+    binary_to_list(<<B1:6,B2:6,(B3 bsr 2):4>>).
+
+decode_list([C1 | Cs], A) ->
+    case b64d(C1) of
+        ws -> decode_list(Cs, A);
+        B1 -> decode_list(Cs, A, B1)
+    end;
+decode_list([], A) ->
+    A.
 
-%% Skipping pad character if not at end of string. Also liberal about
-%% excess padding and skipping of other illegal (non-base64 alphabet)
-%% characters. See section 3.3 of RFC4648
-strip_illegal([], A, _Cnt) ->
+decode_list([C2 | Cs], A, B1) ->
+    case b64d(C2) of
+        ws -> decode_list(Cs, A, B1);
+        B2 -> decode_list(Cs, A, B1, B2)
+    end.
+
+decode_list([C3 | Cs], A, B1, B2) ->
+    case b64d(C3) of
+        ws -> decode_list(Cs, A, B1, B2);
+        B3 -> decode_list(Cs, A, B1, B2, B3)
+    end.
+
+decode_list([C4 | Cs], A, B1, B2, B3) ->
+    case b64d(C4) of
+        ws                -> decode_list(Cs, A, B1, B2, B3);
+        eq when B3 =:= eq -> only_ws(Cs, <<A/bits,B1:6,(B2 bsr 4):2>>);
+        eq                -> only_ws(Cs, <<A/bits,B1:6,B2:6,(B3 bsr 2):4>>);
+        B4                -> decode_list(Cs, <<A/bits,B1:6,B2:6,B3:6,B4:6>>)
+    end.
+
+decode_binary(<<C1:8, Cs/bits>>, A) ->
+    case b64d(C1) of
+        ws -> decode_binary(Cs, A);
+        B1 -> decode_binary(Cs, A, B1)
+    end;
+decode_binary(<<>>, A) ->
+    A.
+
+decode_binary(<<C2:8, Cs/bits>>, A, B1) ->
+    case b64d(C2) of
+        ws -> decode_binary(Cs, A, B1);
+        B2 -> decode_binary(Cs, A, B1, B2)
+    end.
+
+decode_binary(<<C3:8, Cs/bits>>, A, B1, B2) ->
+    case b64d(C3) of
+        ws -> decode_binary(Cs, A, B1, B2);
+        B3 -> decode_binary(Cs, A, B1, B2, B3)
+    end.
+
+decode_binary(<<C4:8, Cs/bits>>, A, B1, B2, B3) ->
+    case b64d(C4) of
+        ws                -> decode_binary(Cs, A, B1, B2, B3);
+        eq when B3 =:= eq -> only_ws_binary(Cs, <<A/bits,B1:6,(B2 bsr 4):2>>);
+        eq                -> only_ws_binary(Cs, <<A/bits,B1:6,B2:6,(B3 bsr 2):4>>);
+        B4                -> decode_binary(Cs, <<A/bits,B1:6,B2:6,B3:6,B4:6>>)
+    end.
+
+only_ws_binary(<<>>, A) ->
     A;
-strip_illegal([0|Cs], A, Cnt) ->
-    strip_illegal(Cs, A, Cnt);
-strip_illegal([C|Cs], A, Cnt) ->
-    case element(C, ?DECODE_MAP) of
-	bad ->
-	    strip_illegal(Cs, A, Cnt);
-	ws ->
-	    strip_illegal(Cs, A, Cnt);
-	eq ->
-	    case {tail_contains_more(Cs, false), Cnt rem 4} of
-		{{[], _}, 0} ->
-		    A;            %% Ignore extra =
-		{{[], true}, 2} ->
-		    [$=|[$=|A]];  %% 'XX=='
-		{{[], _}, 3} ->
-		    [$=|A];       %% 'XXX='
-		{{[H|T], _}, _} ->
-		    %% more data, skip equals
-		    strip_illegal(T, [H|A], Cnt+1)
-	    end;
-	_ ->
-	    strip_illegal(Cs, [C|A], Cnt+1)
+only_ws_binary(<<C:8, Cs/bits>>, A) ->
+    case b64d(C) of
+        ws -> only_ws_binary(Cs, A)
     end.
 
-%% Search the tail for more valid data and remember if we saw
-%% another equals along the way.
-tail_contains_more([], Eq) ->
-    {[], Eq};
-tail_contains_more(<<>>, Eq) ->
-    {<<>>, Eq};
-tail_contains_more([C|T]=More, Eq) ->
-    case element(C, ?DECODE_MAP) of
-	bad ->
-	    tail_contains_more(T, Eq);
-	ws ->
-	    tail_contains_more(T, Eq);
-	eq ->
-	    tail_contains_more(T, true);
-	_ ->
-	    {More, Eq}
+decode_list_to_string([C1 | Cs]) ->
+    case b64d(C1) of
+        ws -> decode_list_to_string(Cs);
+        B1 -> decode_list_to_string(Cs, B1)
     end;
-tail_contains_more(<<C:8,T/bits>> =More, Eq) ->
-    case element(C, ?DECODE_MAP) of
-	bad ->
-	    tail_contains_more(T, Eq);
-	ws ->
-	    tail_contains_more(T, Eq);
-	eq ->
-	    tail_contains_more(T, true);
-	_ ->
-	    {More, Eq}
+decode_list_to_string([]) ->
+    [].
+
+decode_list_to_string([C2 | Cs], B1) ->
+    case b64d(C2) of
+        ws -> decode_list_to_string(Cs, B1);
+        B2 -> decode_list_to_string(Cs, B1, B2)
     end.
-    
+
+decode_list_to_string([C3 | Cs], B1, B2) ->
+    case b64d(C3) of
+        ws -> decode_list_to_string(Cs, B1, B2);
+        B3 -> decode_list_to_string(Cs, B1, B2, B3)
+    end.
+
+decode_list_to_string([C4 | Cs], B1, B2, B3) ->
+    case b64d(C4) of
+        ws ->
+            decode_list_to_string(Cs, B1, B2, B3);
+        eq when B3 =:= eq ->
+            only_ws(Cs, binary_to_list(<<B1:6,(B2 bsr 4):2>>));
+        eq ->
+            only_ws(Cs, binary_to_list(<<B1:6,B2:6,(B3 bsr 2):4>>));
+        B4 ->
+            Bits4x6 = (B1 bsl 18) bor (B2 bsl 12) bor (B3 bsl 6) bor B4,
+            Octet1 = Bits4x6 bsr 16,
+            Octet2 = (Bits4x6 bsr 8) band 16#ff,
+            Octet3 = Bits4x6 band 16#ff,
+            [Octet1, Octet2, Octet3 | decode_list_to_string(Cs)]
+    end.
+
+only_ws([], A) ->
+    A;
+only_ws([C | Cs], A) ->
+    case b64d(C) of
+        ws -> only_ws(Cs, A)
+    end.
+
+%%%========================================================================
+%%% Internal functions
+%%%========================================================================
+
 %% accessors 
+-compile({inline, [{b64d, 1}]}).
+%% One-based decode map.
+b64d(X) ->
+    element(X,
+            {bad,bad,bad,bad,bad,bad,bad,bad,ws,ws,bad,bad,ws,bad,bad, %1-15
+             bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad, %16-31
+             ws,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,62,bad,bad,bad,63, %32-47
+             52,53,54,55,56,57,58,59,60,61,bad,bad,bad,eq,bad,bad, %48-63
+             bad,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,
+             15,16,17,18,19,20,21,22,23,24,25,bad,bad,bad,bad,bad,
+             bad,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,
+             41,42,43,44,45,46,47,48,49,50,51,bad,bad,bad,bad,bad,
+             bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
+             bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
+             bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
+             bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
+             bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
+             bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
+             bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,
+             bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad,bad}).
+
+-compile({inline, [{b64e, 1}]}).
 b64e(X) ->
     element(X+1,
 	    {$A, $B, $C, $D, $E, $F, $G, $H, $I, $J, $K, $L, $M, $N,
@@ -368,9 +463,3 @@ b64e(X) ->
 	     $a, $b, $c, $d, $e, $f, $g, $h, $i, $j, $k, $l, $m, $n,
 	     $o, $p, $q, $r, $s, $t, $u, $v, $w, $x, $y, $z,
 	     $0, $1, $2, $3, $4, $5, $6, $7, $8, $9, $+, $/}).
-
-
-b64d(X) ->
-    b64d_ok(element(X, ?DECODE_MAP)).
-
-b64d_ok(I) when is_integer(I) -> I.
diff --git a/lib/stdlib/src/c.erl b/lib/stdlib/src/c.erl
index c04a201ce1..9a447af5b7 100644
--- a/lib/stdlib/src/c.erl
+++ b/lib/stdlib/src/c.erl
@@ -668,19 +668,23 @@ lm() ->
     [l(M) || M <- mm()].
 
 %% erlangrc(Home)
-%%  Try to run a ".erlang" file, first in the current directory
-%%  else in home directory.
+%%  Try to run a ".erlang" file in home directory.
+
+-spec erlangrc() -> {ok, file:filename()} | {error, term()}.
 
 erlangrc() ->
     case init:get_argument(home) of
 	{ok,[[Home]]} ->
 	    erlangrc([Home]);
 	_ ->
-	    f_p_e(["."], ".erlang")
+            {error, enoent}
     end.
 
-erlangrc([Home]) ->
-    f_p_e([".",Home], ".erlang").
+-spec erlangrc(PathList) -> {ok, file:filename()} | {error, term()}
+                                when PathList :: [Dir :: file:name()].
+
+erlangrc([Home|_]=Paths) when is_list(Home) ->
+    f_p_e(Paths, ".erlang").
 
 error(Fmt, Args) ->
     error_logger:error_msg(Fmt, Args).
@@ -692,11 +696,11 @@ f_p_e(P, F) ->
 	{error, E={Line, _Mod, _Term}} ->
 	    error("file:path_eval(~tp,~tp): error on line ~p: ~ts~n",
 		  [P, F, Line, file:format_error(E)]),
-	    ok;
+	    {error, E};
 	{error, E} ->
 	    error("file:path_eval(~tp,~tp): ~ts~n",
 		  [P, F, file:format_error(E)]),
-	    ok;
+	    {error, E};
 	Other ->
 	    Other
     end.
diff --git a/lib/stdlib/src/erl_compile.erl b/lib/stdlib/src/erl_compile.erl
index 18d7548fdc..f781312ca2 100644
--- a/lib/stdlib/src/erl_compile.erl
+++ b/lib/stdlib/src/erl_compile.erl
@@ -188,6 +188,8 @@ parse_dep_option("", T) ->
     {[makedep,{makedep_output,standard_io}],T};
 parse_dep_option("D", T) ->
     {[makedep],T};
+parse_dep_option("MD", T) ->
+    {[makedep_side_effect],T};
 parse_dep_option("F"++Opt, T0) ->
     {File,T} = get_option("MF", Opt, T0),
     {[makedep,{makedep_output,File}],T};
@@ -221,6 +223,7 @@ usage() ->
 	  "the dependencies"},
 	 {"-MP","add a phony target for each dependency"},
 	 {"-MD","same as -M -MT file (with default 'file')"},
+	 {"-MMD","generate dependencies as a side-effect"},
 	 {"-o name","name output directory or file"},
 	 {"-pa path","add path to the front of Erlang's code path"},
 	 {"-pz path","add path to the end of Erlang's code path"},
diff --git a/lib/stdlib/src/erl_lint.erl b/lib/stdlib/src/erl_lint.erl
index f58cb35cea..1930c462e8 100644
--- a/lib/stdlib/src/erl_lint.erl
+++ b/lib/stdlib/src/erl_lint.erl
@@ -144,6 +144,7 @@ value_option(Flag, Default, On, OnVal, Off, OffVal, Opts) ->
                    :: dict:dict(ta(), #typeinfo{}),
                exp_types=gb_sets:empty()        %Exported types
                    :: gb_sets:set(ta()),
+               in_try_head=false :: boolean(),  %In a try head.
                catch_scope = none               %Inside/outside try or catch
                    :: catch_scope()
               }).
@@ -312,6 +313,10 @@ format_error({unused_var, V}) ->
     io_lib:format("variable ~w is unused", [V]);
 format_error({variable_in_record_def,V}) ->
     io_lib:format("variable ~w in record definition", [V]);
+format_error({stacktrace_guard,V}) ->
+    io_lib:format("stacktrace variable ~w must not be used in a guard", [V]);
+format_error({stacktrace_bound,V}) ->
+    io_lib:format("stacktrace variable ~w must not be previously bound", [V]);
 %% --- binaries ---
 format_error({undefined_bittype,Type}) ->
     io_lib:format("bit type ~tw undefined", [Type]);
@@ -3218,11 +3223,11 @@ is_module_dialyzer_option(Option) ->
 
 try_clauses(Scs, Ccs, In, Vt, St0) ->
     {Csvt0,St1} = icrt_clauses(Scs, Vt, St0),
-    St2 = St1#lint{catch_scope=try_catch},
+    St2 = St1#lint{catch_scope=try_catch,in_try_head=true},
     {Csvt1,St3} = icrt_clauses(Ccs, Vt, St2),
     Csvt = Csvt0 ++ Csvt1,
     UpdVt = icrt_export(Csvt, Vt, In, St3),
-    {UpdVt,St3}.
+    {UpdVt,St3#lint{in_try_head=false}}.
 
 %% icrt_clauses(Clauses, In, ImportVarTable, State) ->
 %%      {UpdVt,State}.
@@ -3239,12 +3244,29 @@ icrt_clauses(Cs, Vt, St) ->
     mapfoldl(fun (C, St0) -> icrt_clause(C, Vt, St0) end, St, Cs).
 
 icrt_clause({clause,_Line,H,G,B}, Vt0, #lint{catch_scope=Scope}=St0) ->
-    {Hvt,Binvt,St1} = head(H, Vt0, St0),
-    Vt1 = vtupdate(Hvt, Binvt),
-    {Gvt,St2} = guard(G, vtupdate(Vt1, Vt0), St1),
-    Vt2 = vtupdate(Gvt, Vt1),
-    {Bvt,St3} = exprs(B, vtupdate(Vt2, Vt0), St2),
-    {vtupdate(Bvt, Vt2),St3#lint{catch_scope=Scope}}.
+    Vt1 = taint_stack_var(Vt0, H, St0),
+    {Hvt,Binvt,St1} = head(H, Vt1, St0),
+    Vt2 = vtupdate(Hvt, Binvt),
+    Vt3 = taint_stack_var(Vt2, H, St0),
+    {Gvt,St2} = guard(G, vtupdate(Vt3, Vt0), St1#lint{in_try_head=false}),
+    Vt4 = vtupdate(Gvt, Vt2),
+    {Bvt,St3} = exprs(B, vtupdate(Vt4, Vt0), St2),
+    {vtupdate(Bvt, Vt4),St3#lint{catch_scope=Scope}}.
+
+taint_stack_var(Vt, Pat, #lint{in_try_head=true}) ->
+    [{tuple,_,[_,_,{var,_,Stk}]}] = Pat,
+    case Stk of
+        '_' ->
+            Vt;
+        _ ->
+            lists:map(fun({V,{bound,Used,Lines}}) when V =:= Stk ->
+                              {V,{stacktrace,Used,Lines}};
+                         (B) ->
+                              B
+                      end, Vt)
+    end;
+taint_stack_var(Vt, _Pat, #lint{in_try_head=false}) ->
+    Vt.
 
 icrt_export(Vts, Vt, {Tag,Attrs}, St) ->
     {_File,Loc} = loc(Attrs, St),
@@ -3484,6 +3506,9 @@ pat_var(V, Line, Vt, Bvt, St) ->
                     {[{V,{bound,used,Ls}}],[],
                      %% As this is matching, exported vars are risky.
                      add_warning(Line, {exported_var,V,From}, St)};
+                {ok,{stacktrace,_Usage,Ls}} ->
+                    {[{V,{bound,used,Ls}}],[],
+                     add_error(Line, {stacktrace_bound,V}, St)};
                 error when St#lint.recdef_top ->
                     {[],[{V,{bound,unused,[Line]}}],
                      add_error(Line, {variable_in_record_def,V}, St)};
@@ -3541,6 +3566,9 @@ expr_var(V, Line, Vt, St) ->
                 false ->
                     {[{V,{{export,From},used,Ls}}],St}
             end;
+        {ok,{stacktrace,_Usage,Ls}} ->
+            {[{V,{bound,used,Ls}}],
+             add_error(Line, {stacktrace_guard,V}, St)};
         error ->
             {[{V,{bound,used,[Line]}}],
              add_error(Line, {unbound_var,V}, St)}
diff --git a/lib/stdlib/src/erl_parse.yrl b/lib/stdlib/src/erl_parse.yrl
index 6e72d64acc..14ca24362e 100644
--- a/lib/stdlib/src/erl_parse.yrl
+++ b/lib/stdlib/src/erl_parse.yrl
@@ -29,6 +29,10 @@ clause_args clause_guard clause_body
 expr expr_100 expr_150 expr_160 expr_200 expr_300 expr_400 expr_500
 expr_600 expr_700 expr_800
 expr_max
+pat_expr pat_expr_200 pat_expr_300 pat_expr_400 pat_expr_500
+pat_expr_600 pat_expr_700 pat_expr_800
+pat_expr_max map_pat_expr record_pat_expr
+pat_argument_list pat_exprs
 list tail
 list_comprehension lc_expr lc_exprs
 binary_comprehension
@@ -37,7 +41,7 @@ record_expr record_tuple record_field record_fields
 map_expr map_tuple map_field map_field_assoc map_field_exact map_fields map_key
 if_expr if_clause if_clauses case_expr cr_clause cr_clauses receive_expr
 fun_expr fun_clause fun_clauses atom_or_var integer_or_var
-try_expr try_catch try_clause try_clauses
+try_expr try_catch try_clause try_clauses try_opt_stacktrace
 function_call argument_list
 exprs guard
 atomic strings
@@ -66,7 +70,7 @@ char integer float atom string var
 'spec' 'callback' % helper
 dot.
 
-Expect 2.
+Expect 0.
 
 Rootsymbol form.
 
@@ -210,7 +214,7 @@ function_clause -> atom clause_args clause_guard clause_body :
 	{clause,?anno('$1'),element(3, '$1'),'$2','$3','$4'}.
 
 
-clause_args -> argument_list : element(1, '$1').
+clause_args -> pat_argument_list : element(1, '$1').
 
 clause_guard -> 'when' guard : '$2'.
 clause_guard -> '$empty' : [].
@@ -275,6 +279,53 @@ expr_max -> receive_expr : '$1'.
 expr_max -> fun_expr : '$1'.
 expr_max -> try_expr : '$1'.
 
+pat_expr -> pat_expr_200 '=' pat_expr : {match,?anno('$2'),'$1','$3'}.
+pat_expr -> pat_expr_200 : '$1'.
+
+pat_expr_200 -> pat_expr_300 comp_op pat_expr_300 :
+	?mkop2('$1', '$2', '$3').
+pat_expr_200 -> pat_expr_300 : '$1'.
+
+pat_expr_300 -> pat_expr_400 list_op pat_expr_300 :
+	?mkop2('$1', '$2', '$3').
+pat_expr_300 -> pat_expr_400 : '$1'.
+
+pat_expr_400 -> pat_expr_400 add_op pat_expr_500 :
+	?mkop2('$1', '$2', '$3').
+pat_expr_400 -> pat_expr_500 : '$1'.
+
+pat_expr_500 -> pat_expr_500 mult_op pat_expr_600 :
+	?mkop2('$1', '$2', '$3').
+pat_expr_500 -> pat_expr_600 : '$1'.
+
+pat_expr_600 -> prefix_op pat_expr_700 :
+	?mkop1('$1', '$2').
+pat_expr_600 -> map_pat_expr : '$1'.
+pat_expr_600 -> pat_expr_700 : '$1'.
+
+pat_expr_700 -> record_pat_expr : '$1'.
+pat_expr_700 -> pat_expr_800 : '$1'.
+
+pat_expr_800 -> pat_expr_max : '$1'.
+
+pat_expr_max -> var : '$1'.
+pat_expr_max -> atomic : '$1'.
+pat_expr_max -> list : '$1'.
+pat_expr_max -> binary : '$1'.
+pat_expr_max -> tuple : '$1'.
+pat_expr_max -> '(' pat_expr ')' : '$2'.
+
+map_pat_expr -> '#' map_tuple :
+	{map, ?anno('$1'),'$2'}.
+map_pat_expr -> pat_expr_max '#' map_tuple :
+	{map, ?anno('$2'),'$1','$3'}.
+map_pat_expr -> map_pat_expr '#' map_tuple :
+	{map, ?anno('$2'),'$1','$3'}.
+
+record_pat_expr -> '#' atom '.' atom :
+	{record_index,?anno('$1'),element(3, '$2'),'$4'}.
+record_pat_expr -> '#' atom record_tuple :
+	{record,?anno('$1'),element(3, '$2'),'$3'}.
 
 list -> '[' ']' : {nil,?anno('$1')}.
 list -> '[' expr tail : {cons,?anno('$1'),'$2','$3'}.
@@ -397,6 +448,10 @@ case_expr -> 'case' expr 'of' cr_clauses 'end' :
 cr_clauses -> cr_clause : ['$1'].
 cr_clauses -> cr_clause ';' cr_clauses : ['$1' | '$3'].
 
+%% FIXME: merl in syntax_tools depends on patterns in a 'case' being
+%% full expressions. Therefore, we can't use pat_expr here. There
+%% should be a better way.
+
 cr_clause -> expr clause_guard clause_body :
 	{clause,?anno('$1'),['$1'],'$2','$3'}.
 
@@ -424,11 +479,11 @@ integer_or_var -> var : '$1'.
 fun_clauses -> fun_clause : ['$1'].
 fun_clauses -> fun_clause ';' fun_clauses : ['$1' | '$3'].
 
-fun_clause -> argument_list clause_guard clause_body :
+fun_clause -> pat_argument_list clause_guard clause_body :
 	{Args,Anno} = '$1',
 	{clause,Anno,'fun',Args,'$2','$3'}.
 
-fun_clause -> var argument_list clause_guard clause_body :
+fun_clause -> var pat_argument_list clause_guard clause_body :
 	{clause,element(2, '$1'),element(3, '$1'),element(1, '$2'),'$3','$4'}.
 
 try_expr -> 'try' exprs 'of' cr_clauses try_catch :
@@ -446,24 +501,31 @@ try_catch -> 'after' exprs 'end' :
 try_clauses -> try_clause : ['$1'].
 try_clauses -> try_clause ';' try_clauses : ['$1' | '$3'].
 
-try_clause -> expr clause_guard clause_body :
+try_clause -> pat_expr clause_guard clause_body :
 	A = ?anno('$1'),
 	{clause,A,[{tuple,A,[{atom,A,throw},'$1',{var,A,'_'}]}],'$2','$3'}.
-try_clause -> atom ':' expr clause_guard clause_body :
+try_clause -> atom ':' pat_expr try_opt_stacktrace clause_guard clause_body :
 	A = ?anno('$1'),
-	{clause,A,[{tuple,A,['$1','$3',{var,A,'_'}]}],'$4','$5'}.
-try_clause -> var ':' expr clause_guard clause_body :
+	{clause,A,[{tuple,A,['$1','$3',{var,A,'$4'}]}],'$5','$6'}.
+try_clause -> var ':' pat_expr try_opt_stacktrace clause_guard clause_body :
 	A = ?anno('$1'),
-	{clause,A,[{tuple,A,['$1','$3',{var,A,'_'}]}],'$4','$5'}.
+	{clause,A,[{tuple,A,['$1','$3',{var,A,'$4'}]}],'$5','$6'}.
 
+try_opt_stacktrace -> ':' var : element(3, '$2').
+try_opt_stacktrace -> '$empty' : '_'.
 
 argument_list -> '(' ')' : {[],?anno('$1')}.
 argument_list -> '(' exprs ')' : {'$2',?anno('$1')}.
 
+pat_argument_list -> '(' ')' : {[],?anno('$1')}.
+pat_argument_list -> '(' pat_exprs ')' : {'$2',?anno('$1')}.
 
 exprs -> expr : ['$1'].
 exprs -> expr ',' exprs : ['$1' | '$3'].
 
+pat_exprs -> pat_expr : ['$1'].
+pat_exprs -> pat_expr ',' pat_exprs : ['$1' | '$3'].
+
 guard -> exprs : ['$1'].
 guard -> exprs ';' guard : ['$1'|'$3'].
 
diff --git a/lib/stdlib/src/ets.erl b/lib/stdlib/src/ets.erl
index 4858c8d13c..b6548626f3 100644
--- a/lib/stdlib/src/ets.erl
+++ b/lib/stdlib/src/ets.erl
@@ -1700,6 +1700,8 @@ choice(Height, Width, P, Mode, Tab, Key, Turn, Opos) ->
 		    io:format("~ts\n", [ErrorString]),
 		    choice(Height, Width, P, Mode, Tab, Key, Turn, Opos)
 	    end;
+        eof ->
+            ok;
 	_  ->
 	    choice(Height, Width, P, Mode, Tab, Key, Turn, Opos)
     end.
diff --git a/lib/stdlib/src/filename.erl b/lib/stdlib/src/filename.erl
index 73eccb226e..a322bd002d 100644
--- a/lib/stdlib/src/filename.erl
+++ b/lib/stdlib/src/filename.erl
@@ -34,6 +34,38 @@
 %% we flatten the arguments immediately on function entry as that makes
 %% it easier to ensure that the code works.
 
+%%
+%% *** Requirements on Raw Filename Format ***
+%%
+%% These requirements are due to the 'filename' module
+%% in stdlib. This since it is documented that it
+%% should be able to operate on raw filenames as well
+%% as ordinary filenames.
+%%
+%% A raw filename *must* be a byte sequence where:
+%% 1. Codepoints 0-127 (7-bit ascii) *must* be encoded
+%%    as a byte with the corresponding value. That is,
+%%    the most significant bit in the byte encoding the
+%%    codepoint is never set.
+%% 2. Codepoints greater than 127 *must* be encoded
+%%    with the most significant bit set in *every* byte
+%%    encoding it.
+%%
+%% Latin1 and UTF-8 meet these requirements while
+%% UTF-16 and UTF-32 don't.
+%%
+%% On Windows filenames are natively stored as malformed
+%% UTF-16LE (lonely surrogates may appear). A more correct
+%% description than UTF-16 would be an array of 16-bit
+%% words... In order to meet the requirements of the
+%% raw file format we convert the malformed UTF-16LE to
+%% malformed UTF-8 which meet the requirements.
+%%
+%% Note that these requirements are today only OTP
+%% internal (erts-stdlib internal) requirements that
+%% could be changed.
+%%
+
 -export([absname/1, absname/2, absname_join/2, 
 	 basename/1, basename/2, dirname/1,
 	 extension/1, join/1, join/2, pathtype/1,
@@ -440,6 +472,10 @@ join(Name1, Name2) when is_atom(Name2) ->
 join1([UcLetter, $:|Rest], RelativeName, [], win32)
 when is_integer(UcLetter), UcLetter >= $A, UcLetter =< $Z ->
     join1(Rest, RelativeName, [$:, UcLetter+$a-$A], win32);
+join1([$\\,$\\|Rest], RelativeName, [], win32) ->
+    join1([$/,$/|Rest], RelativeName, [], win32);
+join1([$/,$/|Rest], RelativeName, [], win32) ->
+    join1(Rest, RelativeName, [$/,$/], win32);
 join1([$\\|Rest], RelativeName, Result, win32) ->
     join1([$/|Rest], RelativeName, Result, win32);
 join1([$/|Rest], RelativeName, [$., $/|Result], OsType) ->
@@ -468,6 +504,10 @@ join1([Atom|Rest], RelativeName, Result, OsType) when is_atom(Atom) ->
 join1b(<<UcLetter, $:, Rest/binary>>, RelativeName, [], win32)
 when is_integer(UcLetter), UcLetter >= $A, UcLetter =< $Z ->
     join1b(Rest, RelativeName, [$:, UcLetter+$a-$A], win32);
+join1b(<<$\\,$\\,Rest/binary>>, RelativeName, [], win32) ->
+    join1b(<<$/,$/,Rest/binary>>, RelativeName, [], win32);
+join1b(<<$/,$/,Rest/binary>>, RelativeName, [], win32) ->
+    join1b(Rest, RelativeName, [$/,$/], win32);
 join1b(<<$\\,Rest/binary>>, RelativeName, Result, win32) ->
     join1b(<<$/,Rest/binary>>, RelativeName, Result, win32);
 join1b(<<$/,Rest/binary>>, RelativeName, [$., $/|Result], OsType) ->
@@ -478,6 +518,8 @@ join1b(<<>>, <<>>, Result, OsType) ->
     list_to_binary(maybe_remove_dirsep(Result, OsType));
 join1b(<<>>, RelativeName, [$:|Rest], win32) ->
     join1b(RelativeName, <<>>, [$:|Rest], win32);
+join1b(<<>>, RelativeName, [$/,$/|Result], win32) ->
+    join1b(RelativeName, <<>>, [$/,$/|Result], win32);
 join1b(<<>>, RelativeName, [$/|Result], OsType) ->
     join1b(RelativeName, <<>>, [$/|Result], OsType);
 join1b(<<>>, RelativeName, [$., $/|Result], OsType) ->
@@ -491,6 +533,8 @@ maybe_remove_dirsep([$/, $:, Letter], win32) ->
     [Letter, $:, $/];
 maybe_remove_dirsep([$/], _) ->
     [$/];
+maybe_remove_dirsep([$/,$/], win32) ->
+    [$/,$/];
 maybe_remove_dirsep([$/|Name], _) ->
     lists:reverse(Name);
 maybe_remove_dirsep(Name, _) ->
@@ -680,6 +724,9 @@ win32_splitb(<<Letter0,$:,Rest/binary>>) when ?IS_DRIVELETTER(Letter0) ->
     Letter = fix_driveletter(Letter0),
     L = binary:split(Rest,[<<"/">>,<<"\\">>],[global]),
     [<<Letter,$:>> | [ X || X <- L, X =/= <<>> ]];
+win32_splitb(<<Slash,Slash,Rest/binary>>) when ((Slash =:= $\\) orelse (Slash =:= $/)) ->
+    L = binary:split(Rest,[<<"/">>,<<"\\">>],[global]),
+    [<<"//">> | [ X || X <- L, X =/= <<>> ]];
 win32_splitb(<<Slash,Rest/binary>>) when ((Slash =:= $\\) orelse (Slash =:= $/)) ->
     L = binary:split(Rest,[<<"/">>,<<"\\">>],[global]),
     [<<$/>> | [ X || X <- L, X =/= <<>> ]];
@@ -691,6 +738,8 @@ win32_splitb(Name) ->
 unix_split(Name) ->
     split(Name, [], unix).
 
+win32_split([Slash,Slash|Rest]) when ((Slash =:= $\\) orelse (Slash =:= $/)) ->
+    split(Rest, [[$/,$/]], win32);
 win32_split([$\\|Rest]) ->
     win32_split([$/|Rest]);
 win32_split([X, $\\|Rest]) when is_integer(X) ->
diff --git a/lib/stdlib/src/gen.erl b/lib/stdlib/src/gen.erl
index 33af0aed8f..4b1d448487 100644
--- a/lib/stdlib/src/gen.erl
+++ b/lib/stdlib/src/gen.erl
@@ -49,6 +49,7 @@
                     | {'logfile', string()}.
 -type option()     :: {'timeout', timeout()}
 		    | {'debug', [debug_flag()]}
+		    | {'hibernate_after', timeout()}
 		    | {'spawn_opt', [proc_lib:spawn_option()]}.
 -type options()    :: [option()].
 
diff --git a/lib/stdlib/src/gen_statem.erl b/lib/stdlib/src/gen_statem.erl
index 1110d18af6..cd6312855d 100644
--- a/lib/stdlib/src/gen_statem.erl
+++ b/lib/stdlib/src/gen_statem.erl
@@ -296,7 +296,7 @@
     (Reason :: term()).
 
 %% Format the callback module state in some sensible that is
-%% often condensed way.  For StatusOption =:= 'normal' the perferred
+%% often condensed way.  For StatusOption =:= 'normal' the preferred
 %% return term is [{data,[{"State",FormattedState}]}], and for
 %% StatusOption =:= 'terminate' it is just FormattedState.
 -callback format_status(
@@ -510,8 +510,6 @@ call(ServerRef, Request, Timeout) ->
 
 parse_timeout(Timeout) ->
     case Timeout of
-	{clean_timeout,infinity} ->
-	    {dirty_timeout,infinity};
 	{clean_timeout,_} ->
 	    Timeout;
 	{dirty_timeout,_} ->
diff --git a/lib/stdlib/src/io_lib.erl b/lib/stdlib/src/io_lib.erl
index 9d447418f8..3c8430b820 100644
--- a/lib/stdlib/src/io_lib.erl
+++ b/lib/stdlib/src/io_lib.erl
@@ -963,7 +963,18 @@ limit_tail(Other, D) ->
 %% maps:from_list() creates a map with the same internal ordering of
 %% the selected associations as in Map.
 limit_map(Map, D) ->
-    maps:from_list(erts_internal:maps_to_list(Map, D)).
+    limit_map(maps:iterator(Map), D, []).
+
+limit_map(_I, 0, Acc) ->
+    maps:from_list(Acc);
+limit_map(I, D, Acc) ->
+    case maps:next(I) of
+        {K, V, NextI} ->
+            limit_map(NextI, D-1, [{K,V} | Acc]);
+        none ->
+            maps:from_list(Acc)
+    end.
+
 %%     maps:from_list(limit_map_body(erts_internal:maps_to_list(Map, D), D)).
 
 %% limit_map_body(_, 0) -> [{'...', '...'}];
diff --git a/lib/stdlib/src/io_lib_pretty.erl b/lib/stdlib/src/io_lib_pretty.erl
index 505613b80e..89e1931d2d 100644
--- a/lib/stdlib/src/io_lib_pretty.erl
+++ b/lib/stdlib/src/io_lib_pretty.erl
@@ -478,9 +478,19 @@ print_length(Term, _D, _RF, _Enc, _Str) ->
 print_length_map(_Map, 1, _RF, _Enc, _Str) ->
     {"#{...}", 6};
 print_length_map(Map, D, RF, Enc, Str) when is_map(Map) ->
-    Pairs = print_length_map_pairs(erts_internal:maps_to_list(Map, D), D, RF, Enc, Str),
+    Pairs = print_length_map_pairs(limit_map(maps:iterator(Map), D, []), D, RF, Enc, Str),
     {{map, Pairs}, list_length(Pairs, 3)}.
 
+limit_map(_I, 0, Acc) ->
+    Acc;
+limit_map(I, D, Acc) ->
+    case maps:next(I) of
+        {K, V, NextI} ->
+            limit_map(NextI, D-1, [{K,V} | Acc]);
+        none ->
+            Acc
+    end.
+
 print_length_map_pairs([], _D, _RF, _Enc, _Str) ->
     [];
 print_length_map_pairs(_Pairs, 1, _RF, _Enc, _Str) ->
diff --git a/lib/stdlib/src/maps.erl b/lib/stdlib/src/maps.erl
index 5dafdb282a..a13f340709 100644
--- a/lib/stdlib/src/maps.erl
+++ b/lib/stdlib/src/maps.erl
@@ -23,7 +23,8 @@
 -export([get/3, filter/2,fold/3,
          map/2, size/1,
          update_with/3, update_with/4,
-         without/2, with/2]).
+         without/2, with/2,
+         iterator/1, next/1]).
 
 %% BIFs
 -export([get/2, find/2, from_list/1,
@@ -31,6 +32,15 @@
          new/0, put/3, remove/2, take/2,
          to_list/1, update/3, values/1]).
 
+-opaque iterator() :: {term(), term(), iterator()}
+                      | none | nonempty_improper_list(integer(),map()).
+
+-export_type([iterator/0]).
+
+-dialyzer({no_improper_lists, iterator/1}).
+
+-define(IS_ITERATOR(I), is_tuple(I) andalso tuple_size(I) == 3; I == none; is_integer(hd(I)) andalso is_map(tl(I))).
+
 %% Shadowed by erl_bif_types: maps:get/2
 -spec get(Key,Map) -> Value when
     Key :: term(),
@@ -39,7 +49,6 @@
 
 get(_,_) -> erlang:nif_error(undef).
 
-
 -spec find(Key,Map) -> {ok, Value} | error when
     Key :: term(),
     Map :: map(),
@@ -114,14 +123,20 @@ remove(_,_) -> erlang:nif_error(undef).
 
 take(_,_) -> erlang:nif_error(undef).
 
-%% Shadowed by erl_bif_types: maps:to_list/1
 -spec to_list(Map) -> [{Key,Value}] when
     Map :: map(),
     Key :: term(),
     Value :: term().
 
-to_list(_) -> erlang:nif_error(undef).
+to_list(Map) when is_map(Map) ->
+    to_list_internal(erts_internal:map_next(0, Map, []));
+to_list(Map) ->
+    erlang:error({badmap,Map},[Map]).
 
+to_list_internal([Iter, Map | Acc]) when is_integer(Iter) ->
+    to_list_internal(erts_internal:map_next(Iter, Map, Acc));
+to_list_internal(Acc) ->
+    Acc.
 
 %% Shadowed by erl_bif_types: maps:update/3
 -spec update(Key,Value,Map1) -> Map2 when
@@ -192,47 +207,80 @@ get(Key,Map,Default) ->
     erlang:error({badmap,Map},[Key,Map,Default]).
 
 
--spec filter(Pred,Map1) -> Map2 when
+-spec filter(Pred,MapOrIter) -> Map when
       Pred :: fun((Key, Value) -> boolean()),
       Key  :: term(),
       Value :: term(),
-      Map1 :: map(),
-      Map2 :: map().
+      MapOrIter :: map() | iterator(),
+      Map :: map().
 
 filter(Pred,Map) when is_function(Pred,2), is_map(Map) ->
-    maps:from_list([{K,V}||{K,V}<-maps:to_list(Map),Pred(K,V)]);
+    maps:from_list(filter_1(Pred, iterator(Map)));
+filter(Pred,Iterator) when is_function(Pred,2), ?IS_ITERATOR(Iterator) ->
+    maps:from_list(filter_1(Pred, Iterator));
 filter(Pred,Map) ->
     erlang:error(error_type(Map),[Pred,Map]).
 
-
--spec fold(Fun,Init,Map) -> Acc when
+filter_1(Pred, Iter) ->
+    case next(Iter) of
+        {K, V, NextIter} ->
+            case Pred(K,V) of
+                true ->
+                    [{K,V} | filter_1(Pred, NextIter)];
+                false ->
+                    filter_1(Pred, NextIter)
+            end;
+        none ->
+            []
+    end.
+
+-spec fold(Fun,Init,MapOrIter) -> Acc when
     Fun :: fun((K, V, AccIn) -> AccOut),
     Init :: term(),
     Acc :: term(),
     AccIn :: term(),
     AccOut :: term(),
-    Map :: map(),
+    MapOrIter :: map() | iterator(),
     K :: term(),
     V :: term().
 
 fold(Fun,Init,Map) when is_function(Fun,3), is_map(Map) ->
-    lists:foldl(fun({K,V},A) -> Fun(K,V,A) end,Init,maps:to_list(Map));
+    fold_1(Fun,Init,iterator(Map));
+fold(Fun,Init,Iterator) when is_function(Fun,3), ?IS_ITERATOR(Iterator) ->
+    fold_1(Fun,Init,Iterator);
 fold(Fun,Init,Map) ->
     erlang:error(error_type(Map),[Fun,Init,Map]).
 
--spec map(Fun,Map1) -> Map2 when
+fold_1(Fun, Acc, Iter) ->
+    case next(Iter) of
+        {K, V, NextIter} ->
+            fold_1(Fun, Fun(K,V,Acc), NextIter);
+        none ->
+            Acc
+    end.
+
+-spec map(Fun,MapOrIter) -> Map when
     Fun :: fun((K, V1) -> V2),
-    Map1 :: map(),
-    Map2 :: map(),
+    MapOrIter :: map() | iterator(),
+    Map :: map(),
     K :: term(),
     V1 :: term(),
     V2 :: term().
 
 map(Fun,Map) when is_function(Fun, 2), is_map(Map) ->
-    maps:from_list([{K,Fun(K,V)}||{K,V}<-maps:to_list(Map)]);
+    maps:from_list(map_1(Fun, iterator(Map)));
+map(Fun,Iterator) when is_function(Fun, 2), ?IS_ITERATOR(Iterator) ->
+    maps:from_list(map_1(Fun, Iterator));
 map(Fun,Map) ->
     erlang:error(error_type(Map),[Fun,Map]).
 
+map_1(Fun, Iter) ->
+    case next(Iter) of
+        {K, V, NextIter} ->
+            [{K, Fun(K, V)} | map_1(Fun, NextIter)];
+        none ->
+            []
+    end.
 
 -spec size(Map) -> non_neg_integer() when
     Map :: map().
@@ -242,6 +290,26 @@ size(Map) when is_map(Map) ->
 size(Val) ->
     erlang:error({badmap,Val},[Val]).
 
+-spec iterator(Map) -> Iterator when
+      Map :: map(),
+      Iterator :: iterator().
+
+iterator(M) when is_map(M) -> [0 | M];
+iterator(M) -> erlang:error({badmap, M}, [M]).
+
+-spec next(Iterator) -> {Key, Value, NextIterator} | 'none' when
+      Iterator :: iterator(),
+      Key :: term(),
+      Value :: term(),
+      NextIterator :: iterator().
+next({K, V, I}) ->
+    {K, V, I};
+next([Path | Map]) when is_integer(Path), is_map(Map) ->
+    erts_internal:map_next(Path, Map, iterator);
+next(none) ->
+    none;
+next(Iter) ->
+    erlang:error(badarg, [Iter]).
 
 -spec without(Ks,Map1) -> Map2 when
     Ks :: [K],
@@ -250,11 +318,10 @@ size(Val) ->
     K :: term().
 
 without(Ks,M) when is_list(Ks), is_map(M) ->
-    lists:foldl(fun(K, M1) -> ?MODULE:remove(K, M1) end, M, Ks);
+    lists:foldl(fun(K, M1) -> maps:remove(K, M1) end, M, Ks);
 without(Ks,M) ->
     erlang:error(error_type(M),[Ks,M]).
 
-
 -spec with(Ks, Map1) -> Map2 when
     Ks :: [K],
     Map1 :: map(),
@@ -263,17 +330,17 @@ without(Ks,M) ->
 
 with(Ks,Map1) when is_list(Ks), is_map(Map1) ->
     Fun = fun(K, List) ->
-      case ?MODULE:find(K, Map1) of
-          {ok, V} ->
-              [{K, V} | List];
-          error ->
-              List
-      end
-    end,
-    ?MODULE:from_list(lists:foldl(Fun, [], Ks));
+                  case maps:find(K, Map1) of
+                      {ok, V} ->
+                          [{K, V} | List];
+                      error ->
+                          List
+                  end
+          end,
+    maps:from_list(lists:foldl(Fun, [], Ks));
 with(Ks,M) ->
     erlang:error(error_type(M),[Ks,M]).
 
 
-error_type(M) when is_map(M) -> badarg;
+error_type(M) when is_map(M); ?IS_ITERATOR(M) -> badarg;
 error_type(V) -> {badmap, V}.
diff --git a/lib/stdlib/src/stdlib.app.src b/lib/stdlib/src/stdlib.app.src
index 41c89270aa..5fb48acfab 100644
--- a/lib/stdlib/src/stdlib.app.src
+++ b/lib/stdlib/src/stdlib.app.src
@@ -101,13 +101,14 @@
 	     timer,
 	     unicode,
              unicode_util,
+	     uri_string,
 	     win32reg,
 	     zip]},
   {registered,[timer_server,rsh_starter,take_over_monitor,pool_master,
                dets]},
   {applications, [kernel]},
   {env, []},
-  {runtime_dependencies, ["sasl-3.0","kernel-5.4.1","erts-9.1.1","crypto-3.3",
+  {runtime_dependencies, ["sasl-3.0","kernel-6.0","erts-10.0","crypto-3.3",
 			  "compiler-5.0"]}
 ]}.
 
diff --git a/lib/stdlib/src/string.erl b/lib/stdlib/src/string.erl
index 5a4d2df2a6..e01bb7d85e 100644
--- a/lib/stdlib/src/string.erl
+++ b/lib/stdlib/src/string.erl
@@ -74,15 +74,16 @@
 -export([to_upper/1, to_lower/1]).
 %%
 -import(lists,[member/2]).
-
 -compile({no_auto_import,[length/1]}).
+-compile({inline, [btoken/2, rev/1, append/2, stack/2, search_compile/1]}).
+-define(ASCII_LIST(CP1,CP2), CP1 < 256, CP2 < 256, CP1 =/= $\r).
 
 -export_type([grapheme_cluster/0]).
 
 -type grapheme_cluster() :: char() | [char()].
 -type direction() :: 'leading' | 'trailing'.
 
--dialyzer({no_improper_lists, stack/2}).
+-dialyzer({no_improper_lists, [stack/2, length_b/3]}).
 %%% BIFs internal (not documented) should not to be used outside of this module
 %%% May be removed
 -export([list_to_float/1, list_to_integer/1]).
@@ -127,8 +128,10 @@ is_empty(_) -> false.
 
 %% Count the number of grapheme clusters in chardata
 -spec length(String::unicode:chardata()) -> non_neg_integer().
+length(<<CP1/utf8, Bin/binary>>) ->
+    length_b(Bin, CP1, 0);
 length(CD) ->
-    length_1(unicode_util:gc(CD), 0).
+    length_1(CD, 0).
 
 %% Convert a string to a list of grapheme clusters
 -spec to_graphemes(String::unicode:chardata()) -> [grapheme_cluster()].
@@ -176,6 +179,8 @@ equal(A, B, true, Norm) ->
 
 %% Reverse grapheme clusters
 -spec reverse(String::unicode:chardata()) -> [grapheme_cluster()].
+reverse(<<CP1/utf8, Rest/binary>>) ->
+    reverse_b(Rest, CP1, []);
 reverse(CD) ->
     reverse_1(CD, []).
 
@@ -186,7 +191,10 @@ reverse(CD) ->
       Start :: non_neg_integer(),
       Slice :: unicode:chardata().
 slice(CD, N) when is_integer(N), N >= 0 ->
-    slice_l(CD, N, is_binary(CD)).
+    case slice_l0(CD, N) of
+        [] when is_binary(CD) -> <<>>;
+        Res -> Res
+    end.
 
 -spec slice(String, Start, Length) -> Slice when
       String::unicode:chardata(),
@@ -195,9 +203,15 @@ slice(CD, N) when is_integer(N), N >= 0 ->
       Slice :: unicode:chardata().
 slice(CD, N, Length)
   when is_integer(N), N >= 0, is_integer(Length), Length > 0 ->
-    slice_trail(slice_l(CD, N, is_binary(CD)), Length);
+    case slice_l0(CD, N) of
+        [] when is_binary(CD) -> <<>>;
+        L -> slice_trail(L, Length)
+    end;
 slice(CD, N, infinity) ->
-    slice_l(CD, N, is_binary(CD));
+    case slice_l0(CD, N) of
+        [] when is_binary(CD) -> <<>>;
+        Res -> Res
+    end;
 slice(CD, _, 0) ->
     case is_binary(CD) of
         true  -> <<>>;
@@ -256,18 +270,22 @@ trim(Str, Dir) ->
       Dir :: direction() | 'both',
       Characters :: [grapheme_cluster()].
 trim(Str, _, []) -> Str;
+trim(Str, leading, [Sep]) when is_list(Str), Sep < 256 ->
+    trim_ls(Str, Sep);
 trim(Str, leading, Sep) when is_list(Sep) ->
-    trim_l(Str, search_pattern(Sep));
-trim(Str, trailing, Sep) when is_list(Sep) ->
-    trim_t(Str, 0, search_pattern(Sep));
-trim(Str, both, Sep0) when is_list(Sep0) ->
-    Sep = search_pattern(Sep0),
-    trim_t(trim_l(Str,Sep), 0, Sep).
+    trim_l(Str, Sep);
+trim(Str, trailing, [Sep]) when is_list(Str), Sep < 256 ->
+    trim_ts(Str, Sep);
+trim(Str, trailing, Seps0) when is_list(Seps0) ->
+    Seps = search_pattern(Seps0),
+    trim_t(Str, 0, Seps);
+trim(Str, both, Sep) when is_list(Sep) ->
+    trim(trim(Str,leading,Sep), trailing, Sep).
 
 %% Delete trailing newlines or \r\n
 -spec chomp(String::unicode:chardata()) -> unicode:chardata().
 chomp(Str) ->
-    trim_t(Str,0, {[[$\r,$\n],$\n], [$\r,$\n], [<<$\r>>,<<$\n>>]}).
+    trim(Str, trailing, [[$\r,$\n],$\n]).
 
 %% Split String into two parts where the leading part consists of Characters
 -spec take(String, Characters) -> {Leading, Trailing} when
@@ -300,8 +318,7 @@ take(Str, [], Complement, Dir) ->
         {true,  leading} -> {Str, Empty};
         {true,  trailing} -> {Empty, Str}
     end;
-take(Str, Sep0, false, leading) ->
-    Sep = search_pattern(Sep0),
+take(Str, Sep, false, leading) ->
     take_l(Str, Sep, []);
 take(Str, Sep0, true, leading) ->
     Sep = search_pattern(Sep0),
@@ -461,6 +478,7 @@ replace(String, SearchPattern, Replacement, Where) ->
               SeparatorList::[grapheme_cluster()]) ->
                      [unicode:chardata()].
 lexemes([], _) -> [];
+lexemes(Str, []) -> [Str];
 lexemes(Str, Seps0) when is_list(Seps0) ->
     Seps = search_pattern(Seps0),
     lexemes_m(Str, Seps, []).
@@ -494,13 +512,13 @@ find(String, SearchPattern, leading) ->
 find(String, SearchPattern, trailing) ->
     find_r(String, unicode:characters_to_list(SearchPattern), nomatch).
 
-%% Fetch first codepoint and return rest in tail
+%% Fetch first grapheme cluster and return rest in tail
 -spec next_grapheme(String::unicode:chardata()) ->
                            maybe_improper_list(grapheme_cluster(),unicode:chardata()) |
                            {error,unicode:chardata()}.
 next_grapheme(CD) -> unicode_util:gc(CD).
 
-%% Fetch first grapheme cluster and return rest in tail
+%% Fetch first codepoint and return rest in tail
 -spec next_codepoint(String::unicode:chardata()) ->
                             maybe_improper_list(char(),unicode:chardata()) |
                             {error,unicode:chardata()}.
@@ -508,10 +526,23 @@ next_codepoint(CD) -> unicode_util:cp(CD).
 
 %% Internals
 
-length_1([_|Rest], N) ->
-    length_1(unicode_util:gc(Rest), N+1);
-length_1([], N) ->
-    N.
+length_1([CP1|[CP2|_]=Cont], N) when ?ASCII_LIST(CP1,CP2) ->
+    length_1(Cont, N+1);
+length_1(Str, N) ->
+    case unicode_util:gc(Str) of
+        [] -> N;
+        [_|Rest] -> length_1(Rest, N+1)
+    end.
+
+length_b(<<CP2/utf8, Rest/binary>>, CP1, N)
+  when ?ASCII_LIST(CP1,CP2) ->
+    length_b(Rest, CP2, N+1);
+length_b(Bin0, CP1, N) ->
+    [_|Bin1] = unicode_util:gc([CP1|Bin0]),
+    case unicode_util:cp(Bin1) of
+        [] -> N+1;
+        [CP3|Bin] -> length_b(Bin, CP3, N+1)
+    end.
 
 equal_1([A|AR], [B|BR]) when is_integer(A), is_integer(B) ->
     A =:= B andalso equal_1(AR, BR);
@@ -550,29 +581,66 @@ equal_norm_nocase(A0, B0, Norm) ->
         {L1,L2} when is_list(L1), is_list(L2) -> false
     end.
 
+reverse_1([CP1|[CP2|_]=Cont], Acc) when ?ASCII_LIST(CP1,CP2) ->
+    reverse_1(Cont, [CP1|Acc]);
 reverse_1(CD, Acc) ->
     case unicode_util:gc(CD) of
         [GC|Rest] -> reverse_1(Rest, [GC|Acc]);
         [] -> Acc
     end.
 
-slice_l(CD, N, Binary) when N > 0 ->
+reverse_b(<<CP2/utf8, Rest/binary>>, CP1, Acc)
+  when ?ASCII_LIST(CP1,CP2) ->
+    reverse_b(Rest, CP2,  [CP1|Acc]);
+reverse_b(Bin0, CP1, Acc) ->
+    [GC|Bin1] = unicode_util:gc([CP1|Bin0]),
+    case unicode_util:cp(Bin1) of
+        [] -> [GC|Acc];
+        [CP3|Bin] -> reverse_b(Bin, CP3, [GC|Acc])
+    end.
+
+slice_l0(<<CP1/utf8, Bin/binary>>, N) when N > 0 ->
+    slice_lb(Bin, CP1, N);
+slice_l0(L, N) ->
+    slice_l(L, N).
+
+slice_l([CP1|[CP2|_]=Cont], N) when ?ASCII_LIST(CP1,CP2),N > 0 ->
+    slice_l(Cont, N-1);
+slice_l(CD, N) when N > 0 ->
     case unicode_util:gc(CD) of
-        [_|Cont] -> slice_l(Cont, N-1, Binary);
-        [] when Binary -> <<>>;
+        [_|Cont] -> slice_l(Cont, N-1);
         [] -> []
     end;
-slice_l(Cont, 0, Binary) ->
-    case is_empty(Cont) of
-        true when Binary -> <<>>;
-        _ -> Cont
+slice_l(Cont, 0) ->
+    Cont.
+
+slice_lb(<<CP2/utf8, Bin/binary>>, CP1, N) when ?ASCII_LIST(CP1,CP2), N > 1 ->
+    slice_lb(Bin, CP2, N-1);
+slice_lb(Bin, CP1, N) ->
+    [_|Rest] = unicode_util:gc([CP1|Bin]),
+    if N > 1 ->
+            case unicode_util:cp(Rest) of
+                [CP2|Cont] -> slice_lb(Cont, CP2, N-1);
+                [] -> <<>>
+            end;
+       N =:= 1 ->
+            Rest
     end.
 
+slice_trail(Orig, N) when is_binary(Orig) ->
+    case Orig of
+        <<CP1/utf8, Bin/binary>> when N > 0 ->
+            Length = slice_bin(Bin, CP1, N),
+            Sz = byte_size(Orig) - Length,
+            <<Keep:Sz/binary, _/binary>> = Orig,
+            Keep;
+        _ -> <<>>
+    end;
 slice_trail(CD, N) when is_list(CD) ->
-    slice_list(CD, N);
-slice_trail(CD, N) when is_binary(CD) ->
-    slice_bin(CD, N, CD).
+    slice_list(CD, N).
 
+slice_list([CP1|[CP2|_]=Cont], N) when ?ASCII_LIST(CP1,CP2),N > 0 ->
+    [CP1|slice_list(Cont, N-1)];
 slice_list(CD, N) when N > 0 ->
     case unicode_util:gc(CD) of
         [GC|Cont] -> append(GC, slice_list(Cont, N-1));
@@ -581,17 +649,16 @@ slice_list(CD, N) when N > 0 ->
 slice_list(_, 0) ->
     [].
 
-slice_bin(CD, N, Orig) when N > 0 ->
-    case unicode_util:gc(CD) of
-        [_|Cont] -> slice_bin(Cont, N-1, Orig);
-        [] -> Orig
+slice_bin(<<CP2/utf8, Bin/binary>>, CP1, N) when ?ASCII_LIST(CP1,CP2), N > 0 ->
+    slice_bin(Bin, CP2, N-1);
+slice_bin(CD, CP1, N) when N > 0 ->
+    [_|Bin] = unicode_util:gc([CP1|CD]),
+    case unicode_util:cp(Bin) of
+        [CP2|Cont] -> slice_bin(Cont, CP2, N-1);
+        [] -> 0
     end;
-slice_bin([], 0, Orig) ->
-    Orig;
-slice_bin(CD, 0, Orig) ->
-    Sz = byte_size(Orig) - byte_size(CD),
-    <<Keep:Sz/binary, _/binary>> = Orig,
-    Keep.
+slice_bin(CD, CP1, 0) ->
+    byte_size(CD)+byte_size(<<CP1/utf8>>).
 
 uppercase_list(CPs0) ->
     case unicode_util:uppercase(CPs0) of
@@ -641,16 +708,31 @@ casefold_bin(CPs0, Acc) ->
         [] -> Acc
     end.
 
-
+%% Fast path for ascii searching for one character in lists
+trim_ls([CP1|[CP2|_]=Cont]=Str, Sep)
+  when ?ASCII_LIST(CP1,CP2) ->
+    case Sep of
+        CP1 -> trim_ls(Cont, Sep);
+        _ -> Str
+    end;
+trim_ls(Str, Sep) ->
+    trim_l(Str, [Sep]).
+
+trim_l([CP1|[CP2|_]=Cont]=Str, Sep)
+  when ?ASCII_LIST(CP1,CP2) ->
+    case lists:member(CP1, Sep) of
+        true -> trim_l(Cont, Sep);
+        false -> Str
+    end;
 trim_l([Bin|Cont0], Sep) when is_binary(Bin) ->
     case bin_search_inv(Bin, Cont0, Sep) of
         {nomatch, Cont} -> trim_l(Cont, Sep);
         Keep -> Keep
     end;
-trim_l(Str, {GCs, _, _}=Sep) when is_list(Str) ->
+trim_l(Str, Sep) when is_list(Str) ->
     case unicode_util:gc(Str) of
         [C|Cs] ->
-            case lists:member(C, GCs) of
+            case lists:member(C, Sep) of
                 true -> trim_l(Cs, Sep);
                 false -> Str
             end;
@@ -662,15 +744,51 @@ trim_l(Bin, Sep) when is_binary(Bin) ->
         [Keep] -> Keep
     end.
 
-trim_t([Bin|Cont0], N, Sep) when is_binary(Bin) ->
+%% Fast path for ascii searching for one character in lists
+trim_ts([Sep|Cs1]=Str, Sep) ->
+    case Cs1 of
+        [] -> [];
+        [CP2|_] when ?ASCII_LIST(Sep,CP2) ->
+            Tail = trim_ts(Cs1, Sep),
+            case is_empty(Tail) of
+                true -> [];
+                false -> [Sep|Tail]
+            end;
+        _ ->
+            trim_t(Str, 0, search_pattern([Sep]))
+    end;
+trim_ts([CP|Cont],Sep) when is_integer(CP) ->
+    [CP|trim_ts(Cont, Sep)];
+trim_ts(Str, Sep) ->
+    trim_t(Str, 0, search_pattern([Sep])).
+
+trim_t([CP1|Cont]=Cs0, _, {GCs,CPs,_}=Seps) when is_integer(CP1) ->
+    case lists:member(CP1, CPs) of
+        true ->
+            [GC|Cs1] = unicode_util:gc(Cs0),
+            case lists:member(GC, GCs) of
+                true ->
+                    Tail = trim_t(Cs1, 0, Seps),
+                    case is_empty(Tail) of
+                        true -> [];
+                        false -> append(GC,Tail)
+                    end;
+                false ->
+                    append(GC,trim_t(Cs1, 0, Seps))
+            end;
+        false ->
+            [CP1|trim_t(Cont, 0, Seps)]
+    end;
+trim_t([Bin|Cont0], N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
     <<_:N/binary, Rest/binary>> = Bin,
-    case bin_search(Rest, Cont0, Sep) of
+    Seps = search_compile(Seps0),
+    case bin_search(Rest, Cont0, Seps) of
         {nomatch,_} ->
-            stack(Bin, trim_t(Cont0, 0, Sep));
+            stack(Bin, trim_t(Cont0, 0, Seps));
         [SepStart|Cont1] ->
-            case bin_search_inv(SepStart, Cont1, Sep) of
+            case bin_search_inv(SepStart, Cont1, GCs) of
                 {nomatch, Cont} ->
-                    Tail = trim_t(Cont, 0, Sep),
+                    Tail = trim_t(Cont, 0, Seps),
                     case is_empty(Tail) of
                         true ->
                             KeepSz = byte_size(Bin) - byte_size(SepStart),
@@ -682,67 +800,69 @@ trim_t([Bin|Cont0], N, Sep) when is_binary(Bin) ->
                     end;
                 [NonSep|Cont] when is_binary(NonSep) ->
                     KeepSz = byte_size(Bin) - byte_size(NonSep),
-                    trim_t([Bin|Cont], KeepSz, Sep)
+                    trim_t([Bin|Cont], KeepSz, Seps)
             end
     end;
-trim_t(Str, 0, {GCs,CPs,_}=Sep) when is_list(Str) ->
-    case unicode_util:cp(Str) of
-        [CP|Cs] ->
-            case lists:member(CP, CPs) of
+trim_t(Str, 0, {GCs,_,_}=Seps) when is_list(Str) ->
+    case unicode_util:gc(Str) of
+        [GC|Cs1] ->
+            case lists:member(GC, GCs) of
                 true ->
-                    [GC|Cs1] = unicode_util:gc(Str),
-                    case lists:member(GC, GCs) of
-                        true ->
-                            Tail = trim_t(Cs1, 0, Sep),
-                            case is_empty(Tail) of
-                                true -> [];
-                                false -> append(GC,Tail)
-                            end;
-                        false ->
-                            append(GC,trim_t(Cs1, 0, Sep))
+                    Tail = trim_t(Cs1, 0, Seps),
+                    case is_empty(Tail) of
+                        true -> [];
+                        false -> append(GC,Tail)
                     end;
                 false ->
-                    append(CP,trim_t(Cs, 0, Sep))
+                    append(GC,trim_t(Cs1, 0, Seps))
             end;
         [] -> []
     end;
-trim_t(Bin, N, Sep) when is_binary(Bin) ->
+trim_t(Bin, N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
     <<_:N/binary, Rest/binary>> = Bin,
-    case bin_search(Rest, Sep) of
+    Seps = search_compile(Seps0),
+    case bin_search(Rest, [], Seps) of
         {nomatch,_} -> Bin;
         [SepStart] ->
-            case bin_search_inv(SepStart, [], Sep) of
+            case bin_search_inv(SepStart, [], GCs) of
                 {nomatch,_} ->
                     KeepSz = byte_size(Bin) - byte_size(SepStart),
                     <<Keep:KeepSz/binary, _/binary>> = Bin,
                     Keep;
                 [NonSep] ->
                     KeepSz = byte_size(Bin) - byte_size(NonSep),
-                    trim_t(Bin, KeepSz, Sep)
+                    trim_t(Bin, KeepSz, Seps)
             end
     end.
 
-take_l([Bin|Cont0], Sep, Acc) when is_binary(Bin) ->
-    case bin_search_inv(Bin, Cont0, Sep) of
+
+take_l([CP1|[CP2|_]=Cont]=Str, Seps, Acc)
+  when ?ASCII_LIST(CP1,CP2) ->
+    case lists:member(CP1, Seps) of
+        true -> take_l(Cont, Seps, [CP1|Acc]);
+        false -> {rev(Acc), Str}
+    end;
+take_l([Bin|Cont0], Seps, Acc) when is_binary(Bin) ->
+    case bin_search_inv(Bin, Cont0, Seps) of
         {nomatch, Cont} ->
             Used = cp_prefix(Cont0, Cont),
-            take_l(Cont, Sep, [unicode:characters_to_binary([Bin|Used])|Acc]);
+            take_l(Cont, Seps, [unicode:characters_to_binary([Bin|Used])|Acc]);
         [Bin1|_]=After when is_binary(Bin1) ->
             First = byte_size(Bin) - byte_size(Bin1),
             <<Keep:First/binary, _/binary>> = Bin,
             {btoken(Keep,Acc), After}
     end;
-take_l(Str, {GCs, _, _}=Sep, Acc) when is_list(Str) ->
+take_l(Str, Seps, Acc) when is_list(Str) ->
     case unicode_util:gc(Str) of
         [C|Cs] ->
-            case lists:member(C, GCs) of
-                true -> take_l(Cs, Sep, append(rev(C),Acc));
+            case lists:member(C, Seps) of
+                true -> take_l(Cs, Seps, append(rev(C),Acc));
                 false -> {rev(Acc), Str}
             end;
         [] -> {rev(Acc), []}
     end;
-take_l(Bin, Sep, Acc) when is_binary(Bin) ->
-    case bin_search_inv(Bin, [], Sep) of
+take_l(Bin, Seps, Acc) when is_binary(Bin) ->
+    case bin_search_inv(Bin, [], Seps) of
         {nomatch,_} ->
             {btoken(Bin, Acc), <<>>};
         [After] ->
@@ -751,27 +871,41 @@ take_l(Bin, Sep, Acc) when is_binary(Bin) ->
             {btoken(Keep, Acc), After}
     end.
 
-take_lc([Bin|Cont0], Sep, Acc) when is_binary(Bin) ->
-    case bin_search(Bin, Cont0, Sep) of
+
+take_lc([CP1|Cont]=Str0, {GCs,CPs,_}=Seps, Acc) when is_integer(CP1) ->
+    case lists:member(CP1, CPs) of
+        true ->
+            [GC|Str] = unicode_util:gc(Str0),
+            case lists:member(GC, GCs) of
+                false -> take_lc(Str, Seps, append(rev(GC),Acc));
+                true  -> {rev(Acc), Str0}
+            end;
+        false ->
+            take_lc(Cont, Seps, append(CP1,Acc))
+    end;
+take_lc([Bin|Cont0], Seps0, Acc) when is_binary(Bin) ->
+    Seps = search_compile(Seps0),
+    case bin_search(Bin, Cont0, Seps) of
         {nomatch, Cont} ->
             Used = cp_prefix(Cont0, Cont),
-            take_lc(Cont, Sep, [unicode:characters_to_binary([Bin|Used])|Acc]);
+            take_lc(Cont, Seps, [unicode:characters_to_binary([Bin|Used])|Acc]);
         [Bin1|_]=After when is_binary(Bin1) ->
             First = byte_size(Bin) - byte_size(Bin1),
             <<Keep:First/binary, _/binary>> = Bin,
             {btoken(Keep,Acc), After}
     end;
-take_lc(Str, {GCs, _, _}=Sep, Acc) when is_list(Str) ->
+take_lc(Str, {GCs,_,_}=Seps, Acc) when is_list(Str) ->
     case unicode_util:gc(Str) of
         [C|Cs] ->
             case lists:member(C, GCs) of
-                false -> take_lc(Cs, Sep, append(rev(C),Acc));
+                false -> take_lc(Cs, Seps, append(rev(C),Acc));
                 true  -> {rev(Acc), Str}
             end;
         [] -> {rev(Acc), []}
     end;
-take_lc(Bin, Sep, Acc) when is_binary(Bin) ->
-    case bin_search(Bin, [], Sep) of
+take_lc(Bin, Seps0, Acc) when is_binary(Bin) ->
+    Seps = search_compile(Seps0),
+    case bin_search(Bin, [], Seps) of
         {nomatch,_} ->
             {btoken(Bin, Acc), <<>>};
         [After] ->
@@ -780,148 +914,192 @@ take_lc(Bin, Sep, Acc) when is_binary(Bin) ->
             {btoken(Keep, Acc), After}
     end.
 
-take_t([Bin|Cont0], N, Sep) when is_binary(Bin) ->
+
+take_t([CP1|Cont]=Str0, _, {GCs,CPs,_}=Seps) when is_integer(CP1) ->
+    case lists:member(CP1, CPs) of
+        true ->
+            [GC|Str] = unicode_util:gc(Str0),
+            case lists:member(GC, GCs) of
+                true ->
+                    {Head, Tail} = take_t(Str, 0, Seps),
+                    case is_empty(Head) of
+                        true ->  {Head, append(GC,Tail)};
+                        false -> {append(GC,Head), Tail}
+                    end;
+                false ->
+                    {Head, Tail} = take_t(Str, 0, Seps),
+                    {append(GC,Head), Tail}
+            end;
+        false ->
+            {Head, Tail} = take_t(Cont, 0, Seps),
+            {[CP1|Head], Tail}
+    end;
+take_t([Bin|Cont0], N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
     <<_:N/binary, Rest/binary>> = Bin,
-    case bin_search(Rest, Cont0, Sep) of
+    Seps = search_compile(Seps0),
+    case bin_search(Rest, Cont0, Seps) of
         {nomatch,Cont} ->
             Used = cp_prefix(Cont0, Cont),
-            {Head, Tail} = take_t(Cont, 0, Sep),
+            {Head, Tail} = take_t(Cont, 0, Seps),
             {stack(unicode:characters_to_binary([Bin|Used]), Head), Tail};
         [SepStart|Cont1] ->
-            case bin_search_inv(SepStart, Cont1, Sep) of
+            case bin_search_inv(SepStart, Cont1, GCs) of
                 {nomatch, Cont} ->
-                    {Head, Tail} = take_t(Cont, 0, Sep),
+                    {Head, Tail} = take_t(Cont, 0, Seps),
                     Used = cp_prefix(Cont0, Cont),
-                    case equal(Tail, Cont) of
+                    case is_empty(Head) of
                         true ->
                             KeepSz = byte_size(Bin) - byte_size(SepStart),
                             <<Keep:KeepSz/binary, End/binary>> = Bin,
-                            {stack(Keep,Head), stack(stack(End,Used),Tail)};
+                            {Keep, stack(stack(End,Used),Tail)};
                         false ->
                             {stack(unicode:characters_to_binary([Bin|Used]),Head), Tail}
                     end;
                 [NonSep|Cont] when is_binary(NonSep) ->
                     KeepSz = byte_size(Bin) - byte_size(NonSep),
-                    take_t([Bin|Cont], KeepSz, Sep)
+                    take_t([Bin|Cont], KeepSz, Seps)
             end
     end;
-take_t(Str, 0, {GCs,CPs,_}=Sep) when is_list(Str) ->
-    case unicode_util:cp(Str) of
-        [CP|Cs] ->
-            case lists:member(CP, CPs) of
+take_t(Str, 0, {GCs,_,_}=Seps) when is_list(Str) ->
+    case unicode_util:gc(Str) of
+        [GC|Cs1] ->
+            case lists:member(GC, GCs) of
                 true ->
-                    [GC|Cs1] = unicode_util:gc(Str),
-                    case lists:member(GC, GCs) of
-                        true ->
-                            {Head, Tail} = take_t(Cs1, 0, Sep),
-                            case equal(Tail, Cs1) of
-                                true -> {Head, append(GC,Tail)};
-                                false -> {append(GC,Head), Tail}
-                            end;
-                        false ->
-                            {Head, Tail} = take_t(Cs, 0, Sep),
-                            {append(CP,Head), Tail}
+                    {Head, Tail} = take_t(Cs1, 0, Seps),
+                    case is_empty(Head) of
+                        true ->  {Head, append(GC,Tail)};
+                        false -> {append(GC,Head), Tail}
                     end;
                 false ->
-                    {Head, Tail} = take_t(Cs, 0, Sep),
-                    {append(CP,Head), Tail}
+                    {Head, Tail} = take_t(Cs1, 0, Seps),
+                    {append(GC,Head), Tail}
             end;
         [] -> {[],[]}
     end;
-take_t(Bin, N, Sep) when is_binary(Bin) ->
+take_t(Bin, N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
     <<_:N/binary, Rest/binary>> = Bin,
-    case bin_search(Rest, Sep) of
+    Seps = search_compile(Seps0),
+    case bin_search(Rest, [], Seps) of
         {nomatch,_} -> {Bin, <<>>};
         [SepStart] ->
-            case bin_search_inv(SepStart, [], Sep) of
+            case bin_search_inv(SepStart, [], GCs) of
                 {nomatch,_} ->
                     KeepSz = byte_size(Bin) - byte_size(SepStart),
                     <<Before:KeepSz/binary, End/binary>> = Bin,
                     {Before, End};
                 [NonSep] ->
                     KeepSz = byte_size(Bin) - byte_size(NonSep),
-                    take_t(Bin, KeepSz, Sep)
+                    take_t(Bin, KeepSz, Seps)
             end
     end.
 
-take_tc([Bin|Cont0], N, Sep) when is_binary(Bin) ->
+take_tc([CP1|[CP2|_]=Cont], _, {GCs,_,_}=Seps) when ?ASCII_LIST(CP1,CP2) ->
+    case lists:member(CP1, GCs) of
+        false ->
+            {Head, Tail} = take_tc(Cont, 0, Seps),
+            case is_empty(Head) of
+                true -> {Head, append(CP1,Tail)};
+                false -> {append(CP1,Head), Tail}
+            end;
+        true ->
+            {Head, Tail} = take_tc(Cont, 0, Seps),
+            {append(CP1,Head), Tail}
+    end;
+take_tc([Bin|Cont0], N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
     <<_:N/binary, Rest/binary>> = Bin,
-    case bin_search_inv(Rest, Cont0, Sep) of
+    case bin_search_inv(Rest, Cont0, GCs) of
         {nomatch,Cont} ->
             Used = cp_prefix(Cont0, Cont),
-            {Head, Tail} = take_tc(Cont, 0, Sep),
+            {Head, Tail} = take_tc(Cont, 0, Seps0),
             {stack(unicode:characters_to_binary([Bin|Used]), Head), Tail};
         [SepStart|Cont1] ->
-            case bin_search(SepStart, Cont1, Sep) of
+            Seps = search_compile(Seps0),
+            case bin_search(SepStart, Cont1, Seps) of
                 {nomatch, Cont} ->
-                    {Head, Tail} = take_tc(Cont, 0, Sep),
+                    {Head, Tail} = take_tc(Cont, 0, Seps),
                     Used = cp_prefix(Cont0, Cont),
-                    case equal(Tail, Cont) of
+                    case is_empty(Head) of
                         true ->
                             KeepSz = byte_size(Bin) - byte_size(SepStart),
                             <<Keep:KeepSz/binary, End/binary>> = Bin,
-                            {stack(Keep,Head), stack(stack(End,Used),Tail)};
+                            {Keep, stack(stack(End,Used),Tail)};
                         false ->
                             {stack(unicode:characters_to_binary([Bin|Used]),Head), Tail}
                     end;
                 [NonSep|Cont] when is_binary(NonSep) ->
                     KeepSz = byte_size(Bin) - byte_size(NonSep),
-                    take_tc([Bin|Cont], KeepSz, Sep)
+                    take_tc([Bin|Cont], KeepSz, Seps)
             end
     end;
-take_tc(Str, 0, {GCs,CPs,_}=Sep) when is_list(Str) ->
-    case unicode_util:cp(Str) of
-        [CP|Cs] ->
-            case lists:member(CP, CPs) of
-                true ->
-                    [GC|Cs1] = unicode_util:gc(Str),
-                    case lists:member(GC, GCs) of
-                        false ->
-                            {Head, Tail} = take_tc(Cs1, 0, Sep),
-                            case equal(Tail, Cs1) of
-                                true -> {Head, append(GC,Tail)};
-                                false -> {append(GC,Head), Tail}
-                            end;
-                        true ->
-                            {Head, Tail} = take_tc(Cs1, 0, Sep),
-                            {append(GC,Head), Tail}
-                    end;
+take_tc(Str, 0, {GCs,_,_}=Seps) when is_list(Str) ->
+    case unicode_util:gc(Str) of
+        [GC|Cs1] ->
+            case lists:member(GC, GCs) of
                 false ->
-                    {Head, Tail} = take_tc(Cs, 0, Sep),
-                    case equal(Tail, Cs) of
-                        true  -> {Head, append(CP,Tail)};
-                        false -> {append(CP,Head), Tail}
-                    end
+                    {Head, Tail} = take_tc(Cs1, 0, Seps),
+                    case is_empty(Head) of
+                        true -> {Head, append(GC,Tail)};
+                        false -> {append(GC,Head), Tail}
+                    end;
+                true ->
+                    {Head, Tail} = take_tc(Cs1, 0, Seps),
+                    {append(GC,Head), Tail}
             end;
         [] -> {[],[]}
     end;
-take_tc(Bin, N, Sep) when is_binary(Bin) ->
+take_tc(Bin, N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
     <<_:N/binary, Rest/binary>> = Bin,
-    case bin_search_inv(Rest, [], Sep) of
+    case bin_search_inv(Rest, [], GCs) of
         {nomatch,_} -> {Bin, <<>>};
         [SepStart] ->
-            case bin_search(SepStart, [], Sep) of
+            Seps = search_compile(Seps0),
+            case bin_search(SepStart, [], Seps) of
                 {nomatch,_} ->
                     KeepSz = byte_size(Bin) - byte_size(SepStart),
                     <<Before:KeepSz/binary, End/binary>> = Bin,
                     {Before, End};
                 [NonSep] ->
                     KeepSz = byte_size(Bin) - byte_size(NonSep),
-                    take_tc(Bin, KeepSz, Sep)
+                    take_tc(Bin, KeepSz, Seps)
             end
     end.
 
-prefix_1(Cs, []) -> Cs;
-prefix_1(Cs, [_]=Pre) ->
-    prefix_2(unicode_util:gc(Cs), Pre);
-prefix_1(Cs, Pre) ->
-    prefix_2(unicode_util:cp(Cs), Pre).
-
-prefix_2([C|Cs], [C|Pre]) ->
-    prefix_1(Cs, Pre);
-prefix_2(_, _) ->
-    nomatch.
+prefix_1(Cs0, [GC]) ->
+    case unicode_util:gc(Cs0) of
+        [GC|Cs] -> Cs;
+        _ -> nomatch
+    end;
+prefix_1([CP|Cs], [Pre|PreR]) when is_integer(CP) ->
+    case CP =:= Pre of
+        true -> prefix_1(Cs,PreR);
+        false -> nomatch
+    end;
+prefix_1(<<CP/utf8, Cs/binary>>, [Pre|PreR]) ->
+    case CP =:= Pre of
+        true -> prefix_1(Cs,PreR);
+        false -> nomatch
+    end;
+prefix_1(Cs0, [Pre|PreR]) ->
+    case unicode_util:cp(Cs0) of
+        [Pre|Cs] ->  prefix_1(Cs,PreR);
+        _ -> nomatch
+    end.
 
+split_1([CP1|Cs]=Cs0, [C|_]=Needle, _, Where, Curr, Acc) when is_integer(CP1) ->
+    case CP1=:=C of
+        true ->
+            case prefix_1(Cs0, Needle) of
+                nomatch -> split_1(Cs, Needle, 0, Where, append(C,Curr), Acc);
+                Rest when Where =:= leading ->
+                    [rev(Curr), Rest];
+                Rest when Where =:= trailing ->
+                    split_1(Cs, Needle, 0, Where, [C|Curr], [rev(Curr), Rest]);
+                Rest when Where =:= all ->
+                    split_1(Rest, Needle, 0, Where, [], [rev(Curr)|Acc])
+            end;
+        false ->
+            split_1(Cs, Needle, 0, Where, append(CP1,Curr), Acc)
+    end;
 split_1([Bin|Cont0], Needle, Start, Where, Curr0, Acc)
   when is_binary(Bin) ->
     case bin_search_str(Bin, Start, Cont0, Needle) of
@@ -981,32 +1159,50 @@ split_1(Bin, [_C|_]=Needle, Start, Where, Curr0, Acc) ->
             end
     end.
 
-lexemes_m([Bin|Cont0], Seps, Ts) when is_binary(Bin) ->
-    case bin_search_inv(Bin, Cont0, Seps) of
+lexemes_m([CP|_]=Cs0, {GCs,CPs,_}=Seps, Ts) when is_integer(CP) ->
+    case lists:member(CP, CPs) of
+        true ->
+            [GC|Cs2] = unicode_util:gc(Cs0),
+            case lists:member(GC, GCs) of
+                true ->
+                    lexemes_m(Cs2, Seps, Ts);
+                false ->
+                    {Lexeme,Rest} = lexeme_pick(Cs0, Seps, []),
+                    lexemes_m(Rest, Seps, [Lexeme|Ts])
+            end;
+        false ->
+            {Lexeme,Rest} = lexeme_pick(Cs0, Seps, []),
+            lexemes_m(Rest, Seps, [Lexeme|Ts])
+    end;
+lexemes_m([Bin|Cont0], {GCs,_,_}=Seps0, Ts) when is_binary(Bin) ->
+    case bin_search_inv(Bin, Cont0, GCs) of
         {nomatch,Cont} ->
-            lexemes_m(Cont, Seps, Ts);
+            lexemes_m(Cont, Seps0, Ts);
         Cs ->
+            Seps = search_compile(Seps0),
             {Lexeme,Rest} = lexeme_pick(Cs, Seps, []),
             lexemes_m(Rest, Seps, [Lexeme|Ts])
     end;
-lexemes_m(Cs0, {GCs, _, _}=Seps, Ts) when is_list(Cs0) ->
+lexemes_m(Cs0, {GCs, _, _}=Seps0, Ts) when is_list(Cs0) ->
     case unicode_util:gc(Cs0) of
         [C|Cs] ->
             case lists:member(C, GCs) of
                 true  ->
-                    lexemes_m(Cs, Seps, Ts);
+                    lexemes_m(Cs, Seps0, Ts);
                 false ->
+                    Seps = search_compile(Seps0),
                     {Lexeme,Rest} = lexeme_pick(Cs0, Seps, []),
                     lexemes_m(Rest, Seps, [Lexeme|Ts])
             end;
         [] ->
             lists:reverse(Ts)
     end;
-lexemes_m(Bin, Seps, Ts) when is_binary(Bin) ->
-    case bin_search_inv(Bin, [], Seps) of
+lexemes_m(Bin, {GCs,_,_}=Seps0, Ts) when is_binary(Bin) ->
+    case bin_search_inv(Bin, [], GCs) of
         {nomatch,_} ->
             lists:reverse(Ts);
         [Cs] ->
+            Seps = search_compile(Seps0),
             {Lexeme,Rest} = lexeme_pick(Cs, Seps, []),
             lexemes_m(Rest, Seps, add_non_empty(Lexeme,Ts))
     end.
@@ -1037,7 +1233,7 @@ lexeme_pick(Cs0, {GCs, CPs, _} = Seps, Tkn) when is_list(Cs0) ->
                 true ->
                     [GC|Cs2] = unicode_util:gc(Cs0),
                     case lists:member(GC, GCs) of
-                        true -> {rev(Tkn), Cs0};
+                        true -> {rev(Tkn), Cs2};
                         false -> lexeme_pick(Cs2, Seps, append(rev(GC),Tkn))
                     end;
                 false ->
@@ -1047,7 +1243,7 @@ lexeme_pick(Cs0, {GCs, CPs, _} = Seps, Tkn) when is_list(Cs0) ->
             {rev(Tkn), []}
     end;
 lexeme_pick(Bin, Seps, Tkn) when is_binary(Bin) ->
-    case bin_search(Bin, Seps) of
+    case bin_search(Bin, [], Seps) of
         {nomatch,_} ->
             {btoken(Bin,Tkn), []};
         [Left] ->
@@ -1056,35 +1252,38 @@ lexeme_pick(Bin, Seps, Tkn) when is_binary(Bin) ->
             {btoken(Lexeme, Tkn), Left}
     end.
 
-nth_lexeme_m([Bin|Cont0], Seps, N) when is_binary(Bin) ->
-    case bin_search_inv(Bin, Cont0, Seps) of
+nth_lexeme_m([Bin|Cont0], {GCs,_,_}=Seps0, N) when is_binary(Bin) ->
+    case bin_search_inv(Bin, Cont0, GCs) of
         {nomatch,Cont} ->
-            nth_lexeme_m(Cont, Seps, N);
+            nth_lexeme_m(Cont, Seps0, N);
         Cs when N > 1 ->
-            Rest = lexeme_skip(Cs, Seps),
-            nth_lexeme_m(Rest, Seps, N-1);
+            Rest = lexeme_skip(Cs, Seps0),
+            nth_lexeme_m(Rest, Seps0, N-1);
         Cs ->
+            Seps = search_compile(Seps0),
             {Lexeme,_} = lexeme_pick(Cs, Seps, []),
             Lexeme
     end;
-nth_lexeme_m(Cs0, {GCs, _, _}=Seps, N) when is_list(Cs0) ->
+nth_lexeme_m(Cs0, {GCs, _, _}=Seps0, N) when is_list(Cs0) ->
     case unicode_util:gc(Cs0) of
         [C|Cs] ->
             case lists:member(C, GCs) of
                 true ->
-                    nth_lexeme_m(Cs, Seps, N);
+                    nth_lexeme_m(Cs, Seps0, N);
                 false when N > 1 ->
-                    Cs1 = lexeme_skip(Cs, Seps),
-                    nth_lexeme_m(Cs1, Seps, N-1);
+                    Cs1 = lexeme_skip(Cs, Seps0),
+                    nth_lexeme_m(Cs1, Seps0, N-1);
                 false ->
+                    Seps = search_compile(Seps0),
                     {Lexeme,_} = lexeme_pick(Cs0, Seps, []),
                     Lexeme
             end;
         [] ->
             []
     end;
-nth_lexeme_m(Bin, Seps, N) when is_binary(Bin) ->
-    case bin_search_inv(Bin, [], Seps) of
+nth_lexeme_m(Bin, {GCs,_,_}=Seps0, N) when is_binary(Bin) ->
+    Seps = search_compile(Seps0),
+    case bin_search_inv(Bin, [], GCs) of
         [Cs] when N > 1 ->
             Cs1 = lexeme_skip(Cs, Seps),
             nth_lexeme_m(Cs1, Seps, N-1);
@@ -1100,16 +1299,17 @@ lexeme_skip([CP|Cs1]=Cs0, {GCs,CPs,_}=Seps) when is_integer(CP) ->
         true  ->
             [GC|Cs2] = unicode_util:gc(Cs0),
             case lists:member(GC, GCs) of
-                true -> Cs0;
+                true -> Cs2;
                 false -> lexeme_skip(Cs2, Seps)
             end;
         false ->
             lexeme_skip(Cs1, Seps)
     end;
-lexeme_skip([Bin|Cont0], Seps) when is_binary(Bin) ->
+lexeme_skip([Bin|Cont0], Seps0) when is_binary(Bin) ->
+    Seps = search_compile(Seps0),
     case bin_search(Bin, Cont0, Seps) of
         {nomatch,_} -> lexeme_skip(Cont0, Seps);
-        Cs -> Cs
+        Cs -> tl(unicode_util:gc(Cs))
     end;
 lexeme_skip(Cs0, {GCs, CPs, _} = Seps) when is_list(Cs0) ->
     case unicode_util:cp(Cs0) of
@@ -1118,7 +1318,7 @@ lexeme_skip(Cs0, {GCs, CPs, _} = Seps) when is_list(Cs0) ->
                 true ->
                     [GC|Cs2] = unicode_util:gc(Cs0),
                     case lists:member(GC, GCs) of
-                        true -> Cs0;
+                        true -> Cs2;
                         false -> lexeme_skip(Cs2, Seps)
                     end;
                 false ->
@@ -1127,12 +1327,23 @@ lexeme_skip(Cs0, {GCs, CPs, _} = Seps) when is_list(Cs0) ->
         [] ->
             []
     end;
-lexeme_skip(Bin, Seps) when is_binary(Bin) ->
-    case bin_search(Bin, Seps) of
+lexeme_skip(Bin, Seps0) when is_binary(Bin) ->
+    Seps = search_compile(Seps0),
+    case bin_search(Bin, [], Seps) of
         {nomatch,_} -> <<>>;
-        [Left] -> Left
+        [Left] -> tl(unicode_util:gc(Left))
     end.
 
+find_l([C1|Cs]=Cs0, [C|_]=Needle) when is_integer(C1) ->
+    case C1 of
+        C ->
+            case prefix_1(Cs0, Needle) of
+                nomatch -> find_l(Cs, Needle);
+                _ -> Cs0
+            end;
+        _ ->
+            find_l(Cs, Needle)
+    end;
 find_l([Bin|Cont0], Needle) when is_binary(Bin) ->
     case bin_search_str(Bin, 0, Cont0, Needle) of
         {nomatch, _, Cont} ->
@@ -1157,6 +1368,16 @@ find_l(Bin, Needle) ->
         {_Before, [Cs], _After} -> Cs
     end.
 
+find_r([Cp|Cs]=Cs0, [C|_]=Needle, Res) when is_integer(Cp) ->
+    case Cp of
+        C ->
+            case prefix_1(Cs0, Needle) of
+                nomatch -> find_r(Cs, Needle, Res);
+                _ -> find_r(Cs, Needle, Cs0)
+            end;
+        _ ->
+            find_r(Cs, Needle, Res)
+    end;
 find_r([Bin|Cont0], Needle, Res) when is_binary(Bin) ->
     case bin_search_str(Bin, 0, Cont0, Needle) of
         {nomatch,_,Cont} ->
@@ -1227,11 +1448,6 @@ cp_prefix_1(Orig, Until, Cont) ->
 
 
 %% Binary special
-bin_search(Bin, Seps) ->
-    bin_search(Bin, [], Seps).
-
-bin_search(_Bin, Cont, {[],_,_}) ->
-    {nomatch, Cont};
 bin_search(Bin, Cont, {Seps,_,BP}) ->
     bin_search_loop(Bin, 0, BP, Cont, Seps).
 
@@ -1239,10 +1455,14 @@ bin_search(Bin, Cont, {Seps,_,BP}) ->
 %% i.e. å in nfd form  $a "COMBINING RING ABOVE"
 %% and PREPEND characters like "ARABIC NUMBER SIGN" 1536 <<216,128>>
 %% combined with other characters are currently ignored.
+search_pattern({_,_,_}=P) -> P;
 search_pattern(Seps) ->
     CPs = search_cp(Seps),
-    Bin = bin_pattern(CPs),
-    {Seps, CPs, Bin}.
+    {Seps, CPs, undefined}.
+
+search_compile({Sep, CPs, undefined}) ->
+    {Sep, CPs, binary:compile_pattern(bin_pattern(CPs))};
+search_compile({_,_,_}=Compiled) -> Compiled.
 
 search_cp([CP|Seps]) when is_integer(CP) ->
     [CP|search_cp(Seps)];
@@ -1263,9 +1483,21 @@ bin_search_loop(Bin0, Start, BinSeps, Cont, Seps) ->
     case binary:match(Bin, BinSeps) of
         nomatch ->
             {nomatch,Cont};
+        {Where, _CL} when Cont =:= [] ->
+            <<_:Where/binary, Cont1/binary>> = Bin,
+            [GC|Cont2] = unicode_util:gc(Cont1),
+            case lists:member(GC, Seps) of
+                false when Cont2 =:= [] ->
+                    {nomatch, []};
+                false ->
+                    Next = byte_size(Bin0) - byte_size(Cont2),
+                    bin_search_loop(Bin0, Next, BinSeps, Cont, Seps);
+                true ->
+                    [Cont1]
+            end;
         {Where, _CL} ->
             <<_:Where/binary, Cont0/binary>> = Bin,
-            Cont1 = stack(Cont0, Cont),
+            Cont1 = [Cont0|Cont],
             [GC|Cont2] = unicode_util:gc(Cont1),
             case lists:member(GC, Seps) of
                 false ->
@@ -1273,55 +1505,108 @@ bin_search_loop(Bin0, Start, BinSeps, Cont, Seps) ->
                         [BinR|Cont] when is_binary(BinR) ->
                             Next = byte_size(Bin0) - byte_size(BinR),
                             bin_search_loop(Bin0, Next, BinSeps, Cont, Seps);
-                        BinR when is_binary(BinR), Cont =:= [] ->
-                            Next = byte_size(Bin0) - byte_size(BinR),
-                            bin_search_loop(Bin0, Next, BinSeps, Cont, Seps);
                         _ ->
                             {nomatch, Cont2}
                     end;
-                true when is_list(Cont1) ->
-                    Cont1;
                 true ->
-                    [Cont1]
+                    Cont1
             end
     end.
 
-bin_search_inv(Bin, Cont, {[], _, _}) ->
-    [Bin|Cont];
-bin_search_inv(Bin, Cont, {[Sep], _, _}) ->
-    bin_search_inv_1([Bin|Cont], Sep);
-bin_search_inv(Bin, Cont, {Seps, _, _}) ->
-    bin_search_inv_n([Bin|Cont], Seps).
-
-bin_search_inv_1([<<>>|CPs], _) ->
-    {nomatch, CPs};
-bin_search_inv_1(CPs = [Bin0|Cont], Sep) when is_binary(Bin0) ->
-    case unicode_util:gc(CPs) of
-        [Sep|Bin] when is_binary(Bin), Cont =:= [] ->
-            bin_search_inv_1([Bin], Sep);
-        [Sep|[Bin|Cont]=Cs] when is_binary(Bin) ->
-            bin_search_inv_1(Cs, Sep);
-        [Sep|Cs] ->
-            {nomatch, Cs};
-        _ -> CPs
-    end.
+bin_search_inv(<<>>, Cont, _) ->
+    {nomatch, Cont};
+bin_search_inv(Bin, Cont, [Sep]) ->
+    bin_search_inv_1(Bin, Cont, Sep);
+bin_search_inv(Bin, Cont, Seps) ->
+    bin_search_inv_n(Bin, Cont, Seps).
+
+bin_search_inv_1(<<CP1/utf8, BinRest/binary>>=Bin0, Cont, Sep) ->
+    case BinRest of
+        <<CP2/utf8, _/binary>> when ?ASCII_LIST(CP1, CP2) ->
+            case CP1 of
+                Sep -> bin_search_inv_1(BinRest, Cont, Sep);
+                _ -> [Bin0|Cont]
+            end;
+        _ when Cont =:= [] ->
+            case unicode_util:gc(Bin0) of
+                [Sep|Bin] -> bin_search_inv_1(Bin, Cont, Sep);
+                _ -> [Bin0|Cont]
+            end;
+        _ ->
+            case unicode_util:gc([Bin0|Cont]) of
+                [Sep|[Bin|Cont]] when is_binary(Bin) ->
+                    bin_search_inv_1(Bin, Cont, Sep);
+                [Sep|Cs] ->
+                    {nomatch, Cs};
+                _ -> [Bin0|Cont]
+            end
+    end;
+bin_search_inv_1(<<>>, Cont, _Sep) ->
+    {nomatch, Cont};
+bin_search_inv_1([], Cont, _Sep) ->
+    {nomatch, Cont}.
 
-bin_search_inv_n([<<>>|CPs], _) ->
-    {nomatch, CPs};
-bin_search_inv_n([Bin0|Cont]=CPs, Seps) when is_binary(Bin0) ->
-    [C|Cs0] = unicode_util:gc(CPs),
-    case {lists:member(C, Seps), Cs0} of
-        {true, Cs} when is_binary(Cs), Cont =:= [] ->
-            bin_search_inv_n([Cs], Seps);
-        {true, [Bin|Cont]=Cs} when is_binary(Bin) ->
-            bin_search_inv_n(Cs, Seps);
-        {true, Cs} -> {nomatch, Cs};
-        {false, _} -> CPs
-    end.
 
+bin_search_inv_n(<<CP1/utf8, BinRest/binary>>=Bin0, Cont, Seps) ->
+    case BinRest of
+        <<CP2/utf8, _/binary>> when ?ASCII_LIST(CP1, CP2) ->
+            case lists:member(CP1,Seps) of
+                true -> bin_search_inv_n(BinRest, Cont, Seps);
+                false -> [Bin0|Cont]
+            end;
+        _ when Cont =:= [] ->
+            [GC|Bin] = unicode_util:gc(Bin0),
+            case lists:member(GC, Seps) of
+                true -> bin_search_inv_n(Bin, Cont, Seps);
+                false -> [Bin0|Cont]
+            end;
+        _ ->
+            [GC|Cs0] = unicode_util:gc([Bin0|Cont]),
+            case lists:member(GC, Seps) of
+                false -> [Bin0|Cont];
+                true ->
+                    case Cs0 of
+                        [Bin|Cont] when is_binary(Bin) ->
+                            bin_search_inv_n(Bin, Cont, Seps);
+                        _ ->
+                            {nomatch, Cs0}
+                    end
+            end
+    end;
+bin_search_inv_n(<<>>, Cont, _Sep) ->
+    {nomatch, Cont};
+bin_search_inv_n([], Cont, _Sep) ->
+    {nomatch, Cont}.
+
+bin_search_str(Bin0, Start, [], SearchCPs) ->
+    Compiled = binary:compile_pattern(unicode:characters_to_binary(SearchCPs)),
+    bin_search_str_1(Bin0, Start, Compiled, SearchCPs);
 bin_search_str(Bin0, Start, Cont, [CP|_]=SearchCPs) ->
+    First = binary:compile_pattern(<<CP/utf8>>),
+    bin_search_str_2(Bin0, Start, Cont, First, SearchCPs).
+
+bin_search_str_1(Bin0, Start, First, SearchCPs) ->
+    <<_:Start/binary, Bin/binary>> = Bin0,
+    case binary:match(Bin, First) of
+        nomatch -> {nomatch, byte_size(Bin0), []};
+        {Where0, _} ->
+            Where = Start+Where0,
+            <<Keep:Where/binary, Cs0/binary>> = Bin0,
+            case prefix_1(Cs0, SearchCPs) of
+                nomatch ->
+                    <<_/utf8, Cs/binary>> = Cs0,
+                    KeepSz = byte_size(Bin0) - byte_size(Cs),
+                    bin_search_str_1(Bin0, KeepSz, First, SearchCPs);
+                [] ->
+                    {Keep, [Cs0], <<>>};
+                Rest ->
+                    {Keep, [Cs0], Rest}
+            end
+    end.
+
+bin_search_str_2(Bin0, Start, Cont, First, SearchCPs) ->
     <<_:Start/binary, Bin/binary>> = Bin0,
-    case binary:match(Bin, <<CP/utf8>>) of
+    case binary:match(Bin, First) of
         nomatch -> {nomatch, byte_size(Bin0), Cont};
         {Where0, _} ->
             Where = Start+Where0,
@@ -1330,7 +1615,7 @@ bin_search_str(Bin0, Start, Cont, [CP|_]=SearchCPs) ->
             case prefix_1(stack(Cs0,Cont), SearchCPs) of
                 nomatch when is_binary(Cs) ->
                     KeepSz = byte_size(Bin0) - byte_size(Cs),
-                    bin_search_str(Bin0, KeepSz, Cont, SearchCPs);
+                    bin_search_str_2(Bin0, KeepSz, Cont, First, SearchCPs);
                 nomatch ->
                     {nomatch, Where, stack([GC|Cs],Cont)};
                 [] ->
diff --git a/lib/stdlib/src/supervisor.erl b/lib/stdlib/src/supervisor.erl
index 7920e55930..e56415650f 100644
--- a/lib/stdlib/src/supervisor.erl
+++ b/lib/stdlib/src/supervisor.erl
@@ -31,7 +31,6 @@
 %% Internal exports
 -export([init/1, handle_call/3, handle_cast/2, handle_info/2,
 	 terminate/2, code_change/3, format_status/2]).
--export([try_again_restart/2]).
 
 %% For release_handler only
 -export([get_callback_module/1]).
@@ -79,6 +78,7 @@
                    | {RestartStrategy :: strategy(),
                       Intensity :: non_neg_integer(),
                       Period :: pos_integer()}.
+-type children() :: {Ids :: [child_id()], Db :: #{child_id() => child_rec()}}.
 
 %%--------------------------------------------------------------------------
 %% Defaults
@@ -96,7 +96,7 @@
 	        pid = undefined :: child()
 	                         | {restarting, pid() | undefined}
 	                         | [pid()],
-		name            :: child_id(),
+		id              :: child_id(),
 		mfargs          :: mfargs(),
 		restart_type    :: restart(),
 		shutdown        :: shutdown(),
@@ -104,16 +104,11 @@
 		modules = []    :: modules()}).
 -type child_rec() :: #child{}.
 
--define(DICTS, dict).
--define(DICT, dict:dict).
--define(SETS, sets).
--define(SET, sets:set).
-
 -record(state, {name,
 		strategy               :: strategy() | 'undefined',
-		children = []          :: [child_rec()],
-                dynamics               :: {'dict', ?DICT(pid(), list())}
-                                        | {'set', ?SET(pid())}
+		children = {[],#{}}    :: children(), % Ids in start order
+                dynamics               :: {'maps', #{pid() => list()}}
+                                        | {'sets', sets:set(pid())}
                                         | 'undefined',
 		intensity              :: non_neg_integer() | 'undefined',
 		period                 :: pos_integer() | 'undefined',
@@ -124,6 +119,9 @@
 -type state() :: #state{}.
 
 -define(is_simple(State), State#state.strategy =:= simple_one_for_one).
+-define(is_temporary(_Child_), _Child_#child.restart_type=:=temporary).
+-define(is_transient(_Child_), _Child_#child.restart_type=:=transient).
+-define(is_permanent(_Child_), _Child_#child.restart_type=:=permanent).
 
 -callback init(Args :: term()) ->
     {ok, {SupFlags :: sup_flags(), [ChildSpec :: child_spec()]}}
@@ -179,16 +177,16 @@ start_child(Supervisor, ChildSpec) ->
               | {'error', Error},
       Error :: 'running' | 'restarting' | 'not_found' | 'simple_one_for_one' |
 	       term().
-restart_child(Supervisor, Name) ->
-    call(Supervisor, {restart_child, Name}).
+restart_child(Supervisor, Id) ->
+    call(Supervisor, {restart_child, Id}).
 
 -spec delete_child(SupRef, Id) -> Result when
       SupRef :: sup_ref(),
       Id :: child_id(),
       Result :: 'ok' | {'error', Error},
       Error :: 'running' | 'restarting' | 'not_found' | 'simple_one_for_one'.
-delete_child(Supervisor, Name) ->
-    call(Supervisor, {delete_child, Name}).
+delete_child(Supervisor, Id) ->
+    call(Supervisor, {delete_child, Id}).
 
 %%-----------------------------------------------------------------
 %% Func: terminate_child/2
@@ -202,16 +200,16 @@ delete_child(Supervisor, Name) ->
       Id :: pid() | child_id(),
       Result :: 'ok' | {'error', Error},
       Error :: 'not_found' | 'simple_one_for_one'.
-terminate_child(Supervisor, Name) ->
-    call(Supervisor, {terminate_child, Name}).
+terminate_child(Supervisor, Id) ->
+    call(Supervisor, {terminate_child, Id}).
 
 -spec get_childspec(SupRef, Id) -> Result when
       SupRef :: sup_ref(),
       Id :: pid() | child_id(),
       Result :: {'ok', child_spec()} | {'error', Error},
       Error :: 'not_found'.
-get_childspec(Supervisor, Name) ->
-    call(Supervisor, {get_childspec, Name}).
+get_childspec(Supervisor, Id) ->
+    call(Supervisor, {get_childspec, Id}).
 
 -spec which_children(SupRef) -> [{Id,Child,Type,Modules}] when
       SupRef :: sup_ref(),
@@ -246,17 +244,6 @@ check_childspecs(ChildSpecs) when is_list(ChildSpecs) ->
 check_childspecs(X) -> {error, {badarg, X}}.
 
 %%%-----------------------------------------------------------------
-%%% Called by restart/2
--spec try_again_restart(SupRef, Child) -> ok when
-      SupRef :: sup_ref(),
-      Child :: child_id() | pid().
-try_again_restart(Supervisor, Child) ->
-    cast(Supervisor, {try_again_restart, Child}).
-
-cast(Supervisor, Req) ->
-    gen_server:cast(Supervisor, Req).
-
-%%%-----------------------------------------------------------------
 %%% Called by release_handler during upgrade
 -spec get_callback_module(Pid) -> Module when
       Pid :: pid(),
@@ -325,7 +312,7 @@ init_children(State, StartSpec) ->
 init_dynamic(State, [StartSpec]) ->
     case check_startspec([StartSpec]) of
         {ok, Children} ->
-	    {ok, State#state{children = Children}};
+	    {ok, dyn_init(State#state{children = Children})};
         Error ->
             {stop, {start_spec, Error}}
     end;
@@ -334,35 +321,34 @@ init_dynamic(_State, StartSpec) ->
 
 %%-----------------------------------------------------------------
 %% Func: start_children/2
-%% Args: Children = [child_rec()] in start order
+%% Args: Children = children() % Ids in start order
 %%       SupName = {local, atom()} | {global, atom()} | {pid(), Mod}
-%% Purpose: Start all children.  The new list contains #child's
+%% Purpose: Start all children.  The new map contains #child's
 %%          with pids.
 %% Returns: {ok, NChildren} | {error, NChildren, Reason}
-%%          NChildren = [child_rec()] in termination order (reversed
-%%                        start order)
+%%          NChildren = children() % Ids in termination order
+%%                                   (reversed start order)
 %%-----------------------------------------------------------------
-start_children(Children, SupName) -> start_children(Children, [], SupName).
-
-start_children([Child|Chs], NChildren, SupName) ->
-    case do_start_child(SupName, Child) of
-	{ok, undefined} when Child#child.restart_type =:= temporary ->
-	    start_children(Chs, NChildren, SupName);
-	{ok, Pid} ->
-	    start_children(Chs, [Child#child{pid = Pid}|NChildren], SupName);
-	{ok, Pid, _Extra} ->
-	    start_children(Chs, [Child#child{pid = Pid}|NChildren], SupName);
-	{error, Reason} ->
-	    report_error(start_error, Reason, Child, SupName),
-	    {error, lists:reverse(Chs) ++ [Child | NChildren],
-	     {failed_to_start_child,Child#child.name,Reason}}
-    end;
-start_children([], NChildren, _SupName) ->
-    {ok, NChildren}.
+start_children(Children, SupName) ->
+    Start =
+        fun(Id,Child) ->
+                case do_start_child(SupName, Child) of
+                    {ok, undefined} when ?is_temporary(Child) ->
+                        remove;
+                    {ok, Pid} ->
+                        {update,Child#child{pid = Pid}};
+                    {ok, Pid, _Extra} ->
+                        {update,Child#child{pid = Pid}};
+                    {error, Reason} ->
+                        report_error(start_error, Reason, Child, SupName),
+                        {abort,{failed_to_start_child,Id,Reason}}
+                end
+        end,
+    children_map(Start,Children).
 
 do_start_child(SupName, Child) ->
     #child{mfargs = {M, F, Args}} = Child,
-    case catch apply(M, F, Args) of
+    case do_start_child_i(M, F, Args) of
 	{ok, Pid} when is_pid(Pid) ->
 	    NChild = Child#child{pid = Pid},
 	    report_progress(NChild, SupName),
@@ -371,10 +357,8 @@ do_start_child(SupName, Child) ->
 	    NChild = Child#child{pid = Pid},
 	    report_progress(NChild, SupName),
 	    {ok, Pid, Extra};
-	ignore ->
-	    {ok, undefined};
-	{error, What} -> {error, What};
-	What -> {error, What}
+        Other ->
+            Other
     end.
 
 do_start_child_i(M, F, A) ->
@@ -400,17 +384,17 @@ do_start_child_i(M, F, A) ->
 -spec handle_call(call(), term(), state()) -> {'reply', term(), state()}.
 
 handle_call({start_child, EArgs}, _From, State) when ?is_simple(State) ->
-    Child = hd(State#state.children),
+    Child = get_dynamic_child(State),
     #child{mfargs = {M, F, A}} = Child,
     Args = A ++ EArgs,
     case do_start_child_i(M, F, Args) of
 	{ok, undefined} ->
 	    {reply, {ok, undefined}, State};
 	{ok, Pid} ->
-	    NState = save_dynamic_child(Child#child.restart_type, Pid, Args, State),
+	    NState = dyn_store(Pid, Args, State),
 	    {reply, {ok, Pid}, NState};
 	{ok, Pid, Extra} ->
-	    NState = save_dynamic_child(Child#child.restart_type, Pid, Args, State),
+	    NState = dyn_store(Pid, Args, State),
 	    {reply, {ok, Pid, Extra}, NState};
 	What ->
 	    {reply, What, State}
@@ -426,121 +410,94 @@ handle_call({start_child, ChildSpec}, _From, State) ->
     end;
 
 %% terminate_child for simple_one_for_one can only be done with pid
-handle_call({terminate_child, Name}, _From, State) when not is_pid(Name),
-							?is_simple(State) ->
+handle_call({terminate_child, Id}, _From, State) when not is_pid(Id),
+                                                      ?is_simple(State) ->
     {reply, {error, simple_one_for_one}, State};
 
-handle_call({terminate_child, Name}, _From, State) ->
-    case get_child(Name, State, ?is_simple(State)) of
-	{value, Child} ->
-	    case do_terminate(Child, State#state.name) of
-		#child{restart_type=RT} when RT=:=temporary; ?is_simple(State) ->
-		    {reply, ok, state_del_child(Child, State)};
-		NChild ->
-		    {reply, ok, replace_child(NChild, State)}
-		end;
-	false ->
+handle_call({terminate_child, Id}, _From, State) ->
+    case find_child(Id, State) of
+	{ok, Child} ->
+	    do_terminate(Child, State#state.name),
+            {reply, ok, del_child(Child, State)};
+	error ->
 	    {reply, {error, not_found}, State}
     end;
 
 %% restart_child request is invalid for simple_one_for_one supervisors
-handle_call({restart_child, _Name}, _From, State) when ?is_simple(State) ->
+handle_call({restart_child, _Id}, _From, State) when ?is_simple(State) ->
     {reply, {error, simple_one_for_one}, State};
 
-handle_call({restart_child, Name}, _From, State) ->
-    case get_child(Name, State) of
-	{value, Child} when Child#child.pid =:= undefined ->
+handle_call({restart_child, Id}, _From, State) ->
+    case find_child(Id, State) of
+	{ok, Child} when Child#child.pid =:= undefined ->
 	    case do_start_child(State#state.name, Child) of
 		{ok, Pid} ->
-		    NState = replace_child(Child#child{pid = Pid}, State),
+		    NState = set_pid(Pid, Id, State),
 		    {reply, {ok, Pid}, NState};
 		{ok, Pid, Extra} ->
-		    NState = replace_child(Child#child{pid = Pid}, State),
+		    NState = set_pid(Pid, Id, State),
 		    {reply, {ok, Pid, Extra}, NState};
 		Error ->
 		    {reply, Error, State}
 	    end;
-	{value, #child{pid=?restarting(_)}} ->
+	{ok, #child{pid=?restarting(_)}} ->
 	    {reply, {error, restarting}, State};
-	{value, _} ->
+	{ok, _} ->
 	    {reply, {error, running}, State};
 	_ ->
 	    {reply, {error, not_found}, State}
     end;
 
 %% delete_child request is invalid for simple_one_for_one supervisors
-handle_call({delete_child, _Name}, _From, State) when ?is_simple(State) ->
+handle_call({delete_child, _Id}, _From, State) when ?is_simple(State) ->
     {reply, {error, simple_one_for_one}, State};
 
-handle_call({delete_child, Name}, _From, State) ->
-    case get_child(Name, State) of
-	{value, Child} when Child#child.pid =:= undefined ->
-	    NState = remove_child(Child, State),
+handle_call({delete_child, Id}, _From, State) ->
+    case find_child(Id, State) of
+	{ok, Child} when Child#child.pid =:= undefined ->
+	    NState = remove_child(Id, State),
 	    {reply, ok, NState};
-	{value, #child{pid=?restarting(_)}} ->
+	{ok, #child{pid=?restarting(_)}} ->
 	    {reply, {error, restarting}, State};
-	{value, _} ->
+	{ok, _} ->
 	    {reply, {error, running}, State};
 	_ ->
 	    {reply, {error, not_found}, State}
     end;
 
-handle_call({get_childspec, Name}, _From, State) ->
-    case get_child(Name, State, ?is_simple(State)) of
-	{value, Child} ->
+handle_call({get_childspec, Id}, _From, State) ->
+    case find_child(Id, State) of
+	{ok, Child} ->
             {reply, {ok, child_to_spec(Child)}, State};
-	false ->
+	error ->
 	    {reply, {error, not_found}, State}
     end;
 
-handle_call(which_children, _From, #state{children = [#child{restart_type = temporary,
-							     child_type = CT,
-							     modules = Mods}]} =
-		State) when ?is_simple(State) ->
-    Reply = lists:map(fun(Pid) -> {undefined, Pid, CT, Mods} end,
-                      ?SETS:to_list(dynamics_db(temporary, State#state.dynamics))),
-    {reply, Reply, State};
-
-handle_call(which_children, _From, #state{children = [#child{restart_type = RType,
-							 child_type = CT,
-							 modules = Mods}]} =
-		State) when ?is_simple(State) ->
-    Reply = lists:map(fun({?restarting(_),_}) -> {undefined,restarting,CT,Mods};
-			 ({Pid, _}) -> {undefined, Pid, CT, Mods} end,
-		      ?DICTS:to_list(dynamics_db(RType, State#state.dynamics))),
+handle_call(which_children, _From, State) when ?is_simple(State) ->
+    #child{child_type = CT,modules = Mods} = get_dynamic_child(State),
+    Reply = dyn_map(fun(?restarting(_)) -> {undefined, restarting, CT, Mods};
+                       (Pid) -> {undefined, Pid, CT, Mods}
+                    end, State),
     {reply, Reply, State};
 
 handle_call(which_children, _From, State) ->
     Resp =
-	lists:map(fun(#child{pid = ?restarting(_), name = Name,
-			     child_type = ChildType, modules = Mods}) ->
-			  {Name, restarting, ChildType, Mods};
-		     (#child{pid = Pid, name = Name,
-			     child_type = ChildType, modules = Mods}) ->
-			  {Name, Pid, ChildType, Mods}
-		  end,
-		  State#state.children),
+	children_to_list(
+          fun(Id,#child{pid = ?restarting(_),
+                        child_type = ChildType, modules = Mods}) ->
+                  {Id, restarting, ChildType, Mods};
+             (Id,#child{pid = Pid,
+                        child_type = ChildType, modules = Mods}) ->
+                  {Id, Pid, ChildType, Mods}
+          end,
+          State#state.children),
     {reply, Resp, State};
 
-
-handle_call(count_children, _From, #state{children = [#child{restart_type = temporary,
-							     child_type = CT}]} = State)
-  when ?is_simple(State) ->
-    Sz = ?SETS:size(dynamics_db(temporary, State#state.dynamics)),
-    Reply = case CT of
-		supervisor -> [{specs, 1}, {active, Sz},
-			       {supervisors, Sz}, {workers, 0}];
-		worker -> [{specs, 1}, {active, Sz},
-			   {supervisors, 0}, {workers, Sz}]
-	    end,
-    {reply, Reply, State};
-
-handle_call(count_children, _From,  #state{dynamic_restarts = Restarts,
-					   children = [#child{restart_type = RType,
-							      child_type = CT}]} = State)
+handle_call(count_children, _From,  #state{dynamic_restarts = Restarts} = State)
   when ?is_simple(State) ->
-    Sz = ?DICTS:size(dynamics_db(RType, State#state.dynamics)),
-    Active = Sz - Restarts,
+    #child{child_type = CT} = get_dynamic_child(State),
+    Sz = dyn_size(State),
+    Active = Sz - Restarts, % Restarts is always 0 for temporary children
     Reply = case CT of
 		supervisor -> [{specs, 1}, {active, Active},
 			       {supervisors, Sz}, {workers, 0}];
@@ -552,16 +509,15 @@ handle_call(count_children, _From,  #state{dynamic_restarts = Restarts,
 handle_call(count_children, _From, State) ->
     %% Specs and children are together on the children list...
     {Specs, Active, Supers, Workers} =
-	lists:foldl(fun(Child, Counts) ->
-			   count_child(Child, Counts)
-		   end, {0,0,0,0}, State#state.children),
+	children_fold(fun(_Id, Child, Counts) ->
+                              count_child(Child, Counts)
+                      end, {0,0,0,0}, State#state.children),
 
     %% Reformat counts to a property list.
     Reply = [{specs, Specs}, {active, Active},
 	     {supervisors, Supers}, {workers, Workers}],
     {reply, Reply, State}.
 
-
 count_child(#child{pid = Pid, child_type = worker},
 	    {Specs, Active, Supers, Workers}) ->
     case is_pid(Pid) andalso is_process_alive(Pid) of
@@ -575,34 +531,15 @@ count_child(#child{pid = Pid, child_type = supervisor},
 	false -> {Specs+1, Active, Supers+1, Workers}
     end.
 
-
 %%% If a restart attempt failed, this message is cast
 %%% from restart/2 in order to give gen_server the chance to
 %%% check it's inbox before trying again.
--spec handle_cast({try_again_restart, child_id() | pid()}, state()) ->
+-spec handle_cast({try_again_restart, child_id() | {'restarting',pid()}}, state()) ->
 			 {'noreply', state()} | {stop, shutdown, state()}.
 
-handle_cast({try_again_restart,Pid}, #state{children=[Child]}=State)
-  when ?is_simple(State) ->
-    RT = Child#child.restart_type,
-    RPid = restarting(Pid),
-    case dynamic_child_args(RPid, RT, State#state.dynamics) of
-	{ok, Args} ->
-	    {M, F, _} = Child#child.mfargs,
-	    NChild = Child#child{pid = RPid, mfargs = {M, F, Args}},
-	    case restart(NChild,State) of
-		{ok, State1} ->
-		    {noreply, State1};
-		{shutdown, State1} ->
-		    {stop, shutdown, State1}
-	    end;
-	error ->
-            {noreply, State}
-    end;
-
-handle_cast({try_again_restart,Name}, State) ->
-    case lists:keyfind(Name,#child.name,State#state.children) of
-	Child = #child{pid=?restarting(_)} ->
+handle_cast({try_again_restart,TryAgainId}, State) ->
+    case find_child_and_args(TryAgainId, State) of
+	{ok, Child = #child{pid=?restarting(_)}} ->
 	    case restart(Child,State) of
 		{ok, State1} ->
 		    {noreply, State1};
@@ -637,10 +574,8 @@ handle_info(Msg, State) ->
 %%
 -spec terminate(term(), state()) -> 'ok'.
 
-terminate(_Reason, #state{children=[Child]} = State) when ?is_simple(State) ->
-    terminate_dynamic_children(Child, dynamics_db(Child#child.restart_type,
-                                                  State#state.dynamics),
-                               State#state.name);
+terminate(_Reason, State) when ?is_simple(State) ->
+    terminate_dynamic_children(State);
 terminate(_Reason, State) ->
     terminate_children(State#state.children, State#state.name).
 
@@ -675,8 +610,8 @@ code_change(_, State, _) ->
 
 update_childspec(State, StartSpec) when ?is_simple(State) ->
     case check_startspec(StartSpec) of
-        {ok, [Child]} ->
-            {ok, State#state{children = [Child]}};
+        {ok, {[_],_}=Children} ->
+            {ok, State#state{children = Children}};
         Error ->
             {error, Error}
     end;
@@ -690,39 +625,36 @@ update_childspec(State, StartSpec) ->
 	    {error, Error}
     end.
 
-update_childspec1([Child|OldC], Children, KeepOld) ->
-    case update_chsp(Child, Children) of
-	{ok,NewChildren} ->
-	    update_childspec1(OldC, NewChildren, KeepOld);
+update_childspec1({[Id|OldIds], OldDb}, {Ids,Db}, KeepOld) ->
+    case update_chsp(maps:get(Id,OldDb), Db) of
+	{ok,NewDb} ->
+	    update_childspec1({OldIds,OldDb}, {Ids,NewDb}, KeepOld);
 	false ->
-	    update_childspec1(OldC, Children, [Child|KeepOld])
+	    update_childspec1({OldIds,OldDb}, {Ids,Db}, [Id|KeepOld])
     end;
-update_childspec1([], Children, KeepOld) ->
+update_childspec1({[],OldDb}, {Ids,Db}, KeepOld) ->
+    KeepOldDb = maps:with(KeepOld,OldDb),
     %% Return them in (kept) reverse start order.
-    lists:reverse(Children ++ KeepOld).
-
-update_chsp(OldCh, Children) ->
-    case lists:map(fun(Ch) when OldCh#child.name =:= Ch#child.name ->
-			   Ch#child{pid = OldCh#child.pid};
-		      (Ch) ->
-			   Ch
-		   end,
-		   Children) of
-	Children ->
-	    false;  % OldCh not found in new spec.
-	NewC ->
-	    {ok, NewC}
+    {lists:reverse(Ids ++ KeepOld),maps:merge(KeepOldDb,Db)}.
+
+update_chsp(#child{id=Id}=OldChild, NewDb) ->
+    case maps:find(Id, NewDb) of
+        {ok,Child} ->
+            {ok,NewDb#{Id => Child#child{pid = OldChild#child.pid}}};
+        error -> % Id not found in new spec.
+            false
     end.
+
     
 %%% ---------------------------------------------------
 %%% Start a new child.
 %%% ---------------------------------------------------
 
 handle_start_child(Child, State) ->
-    case get_child(Child#child.name, State) of
-	false ->
+    case find_child(Child#child.id, State) of
+	error ->
 	    case do_start_child(State#state.name, Child) of
-		{ok, undefined} when Child#child.restart_type =:= temporary ->
+		{ok, undefined} when ?is_temporary(Child) ->
 		    {{ok, undefined}, State};
 		{ok, Pid} ->
 		    {{ok, Pid}, save_child(Child#child{pid = Pid}, State)};
@@ -731,9 +663,9 @@ handle_start_child(Child, State) ->
 		{error, What} ->
 		    {{error, {What, Child}}, State}
 	    end;
-	{value, OldChild} when is_pid(OldChild#child.pid) ->
+	{ok, OldChild} when is_pid(OldChild#child.pid) ->
 	    {{error, {already_started, OldChild#child.pid}}, State};
-	{value, _OldChild} ->
+	{ok, _OldChild} ->
 	    {{error, already_present}, State}
     end.
 
@@ -742,63 +674,45 @@ handle_start_child(Child, State) ->
 %%% Returns: {ok, state()} | {shutdown, state()}
 %%% ---------------------------------------------------
 
-restart_child(Pid, Reason, #state{children = [Child]} = State) when ?is_simple(State) ->
-    RestartType = Child#child.restart_type,
-    case dynamic_child_args(Pid, RestartType, State#state.dynamics) of
-	{ok, Args} ->
-	    {M, F, _} = Child#child.mfargs,
-	    NChild = Child#child{pid = Pid, mfargs = {M, F, Args}},
-	    do_restart(RestartType, Reason, NChild, State);
-	error ->
-            {ok, State}
-    end;
-
 restart_child(Pid, Reason, State) ->
-    Children = State#state.children,
-    case lists:keyfind(Pid, #child.pid, Children) of
-	#child{restart_type = RestartType} = Child ->
-	    do_restart(RestartType, Reason, Child, State);
-	false ->
+    case find_child_and_args(Pid, State) of
+        {ok, Child} ->
+	    do_restart(Reason, Child, State);
+	error ->
 	    {ok, State}
     end.
 
-do_restart(permanent, Reason, Child, State) ->
+do_restart(Reason, Child, State) when ?is_permanent(Child) ->
     report_error(child_terminated, Reason, Child, State#state.name),
     restart(Child, State);
-do_restart(_, normal, Child, State) ->
-    NState = state_del_child(Child, State),
+do_restart(normal, Child, State) ->
+    NState = del_child(Child, State),
     {ok, NState};
-do_restart(_, shutdown, Child, State) ->
-    NState = state_del_child(Child, State),
+do_restart(shutdown, Child, State) ->
+    NState = del_child(Child, State),
     {ok, NState};
-do_restart(_, {shutdown, _Term}, Child, State) ->
-    NState = state_del_child(Child, State),
+do_restart({shutdown, _Term}, Child, State) ->
+    NState = del_child(Child, State),
     {ok, NState};
-do_restart(transient, Reason, Child, State) ->
+do_restart(Reason, Child, State) when ?is_transient(Child) ->
     report_error(child_terminated, Reason, Child, State#state.name),
     restart(Child, State);
-do_restart(temporary, Reason, Child, State) ->
+do_restart(Reason, Child, State) when ?is_temporary(Child) ->
     report_error(child_terminated, Reason, Child, State#state.name),
-    NState = state_del_child(Child, State),
+    NState = del_child(Child, State),
     {ok, NState}.
 
 restart(Child, State) ->
     case add_restart(State) of
 	{ok, NState} ->
 	    case restart(NState#state.strategy, Child, NState) of
-		{try_again,NState2} ->
+		{{try_again, TryAgainId}, NState2} ->
 		    %% Leaving control back to gen_server before
 		    %% trying again. This way other incoming requsts
 		    %% for the supervisor can be handled - e.g. a
 		    %% shutdown request for the supervisor or the
 		    %% child.
-		    Id = if ?is_simple(State) -> Child#child.pid;
-			    true -> Child#child.name
-			 end,
-		    ok = try_again_restart(self(), Id),
-		    {ok,NState2};
-		{try_again, NState2, #child{name=ChName}} ->
-		    ok = try_again_restart(self(), ChName),
+                    try_again_restart(TryAgainId),
 		    {ok,NState2};
 		Other ->
 		    Other
@@ -806,124 +720,111 @@ restart(Child, State) ->
 	{terminate, NState} ->
 	    report_error(shutdown, reached_max_restart_intensity,
 			 Child, State#state.name),
-	    {shutdown, remove_child(Child, NState)}
+	    {shutdown, del_child(Child, NState)}
     end.
 
 restart(simple_one_for_one, Child, State0) ->
     #child{pid = OldPid, mfargs = {M, F, A}} = Child,
-    State = case OldPid of
+    State1 = case OldPid of
 		?restarting(_) ->
 		    NRes = State0#state.dynamic_restarts - 1,
 		    State0#state{dynamic_restarts = NRes};
 		_ ->
 		    State0
 	    end,
-    Dynamics = ?DICTS:erase(OldPid, dynamics_db(Child#child.restart_type,
-					       State#state.dynamics)),
+    State2 = dyn_erase(OldPid, State1),
     case do_start_child_i(M, F, A) of
 	{ok, Pid} ->
-            DynamicsDb = {dict, ?DICTS:store(Pid, A, Dynamics)},
-	    NState = State#state{dynamics = DynamicsDb},
+            NState = dyn_store(Pid, A, State2),
 	    {ok, NState};
 	{ok, Pid, _Extra} ->
-            DynamicsDb = {dict, ?DICTS:store(Pid, A, Dynamics)},
-	    NState = State#state{dynamics = DynamicsDb},
+            NState = dyn_store(Pid, A, State2),
 	    {ok, NState};
 	{error, Error} ->
-	    NRestarts = State#state.dynamic_restarts + 1,
-            DynamicsDb = {dict, ?DICTS:store(restarting(OldPid), A, Dynamics)},
-	    NState = State#state{dynamic_restarts = NRestarts,
-				 dynamics = DynamicsDb},
-	    report_error(start_error, Error, Child, State#state.name),
-	    {try_again, NState}
+            ROldPid = restarting(OldPid),
+	    NRestarts = State2#state.dynamic_restarts + 1,
+	    State3 = State2#state{dynamic_restarts = NRestarts},
+            NState = dyn_store(ROldPid, A, State3),
+	    report_error(start_error, Error, Child, NState#state.name),
+	    {{try_again, ROldPid}, NState}
     end;
-restart(one_for_one, Child, State) ->
+restart(one_for_one, #child{id=Id} = Child, State) ->
     OldPid = Child#child.pid,
     case do_start_child(State#state.name, Child) of
 	{ok, Pid} ->
-	    NState = replace_child(Child#child{pid = Pid}, State),
+	    NState = set_pid(Pid, Id, State),
 	    {ok, NState};
 	{ok, Pid, _Extra} ->
-	    NState = replace_child(Child#child{pid = Pid}, State),
+	    NState = set_pid(Pid, Id, State),
 	    {ok, NState};
 	{error, Reason} ->
-	    NState = replace_child(Child#child{pid = restarting(OldPid)}, State),
+	    NState = set_pid(restarting(OldPid), Id, State),
 	    report_error(start_error, Reason, Child, State#state.name),
-	    {try_again, NState}
-    end;
-restart(rest_for_one, Child, State) ->
-    {ChAfter, ChBefore} = split_child(Child#child.pid, State#state.children),
-    ChAfter2 = terminate_children(ChAfter, State#state.name),
-    case start_children(ChAfter2, State#state.name) of
-	{ok, ChAfter3} ->
-	    {ok, State#state{children = ChAfter3 ++ ChBefore}};
-	{error, ChAfter3, {failed_to_start_child, ChName, _Reason}}
-	  when ChName =:= Child#child.name ->
-	    NChild = Child#child{pid=restarting(Child#child.pid)},
-	    NState = State#state{children = ChAfter3 ++ ChBefore},
-	    {try_again, replace_child(NChild,NState)};
-	{error, ChAfter3, {failed_to_start_child, ChName, _Reason}} ->
-	    NChild = lists:keyfind(ChName, #child.name, ChAfter3),
-	    NChild2 = NChild#child{pid=?restarting(undefined)},
-	    NState = State#state{children = ChAfter3 ++ ChBefore},
-	    {try_again, replace_child(NChild2,NState), NChild2}
+	    {{try_again,Id}, NState}
     end;
-restart(one_for_all, Child, State) ->
-    Children1 = del_child(Child#child.pid, State#state.children),
-    Children2 = terminate_children(Children1, State#state.name),
-    case start_children(Children2, State#state.name) of
-	{ok, NChs} ->
-	    {ok, State#state{children = NChs}};
-	{error, NChs, {failed_to_start_child, ChName, _Reason}}
-	  when ChName =:= Child#child.name ->
-	    NChild = Child#child{pid=restarting(Child#child.pid)},
-	    NState = State#state{children = NChs},
-	    {try_again, replace_child(NChild,NState)};
-	{error, NChs, {failed_to_start_child, ChName, _Reason}} ->
-	    NChild = lists:keyfind(ChName, #child.name, NChs),
-	    NChild2 = NChild#child{pid=?restarting(undefined)},
-	    NState = State#state{children = NChs},
-	    {try_again, replace_child(NChild2,NState), NChild2}
+restart(rest_for_one, #child{id=Id} = Child, #state{name=SupName} = State) ->
+    {ChAfter, ChBefore} = split_child(Id, State#state.children),
+    {Return, ChAfter2} = restart_multiple_children(Child, ChAfter, SupName),
+    {Return, State#state{children = append(ChAfter2,ChBefore)}};
+restart(one_for_all, Child, #state{name=SupName} = State) ->
+    Children1 = del_child(Child#child.id, State#state.children),
+    {Return, NChildren} = restart_multiple_children(Child, Children1, SupName),
+    {Return, State#state{children = NChildren}}.
+
+restart_multiple_children(Child, Children, SupName) ->
+    Children1 = terminate_children(Children, SupName),
+    case start_children(Children1, SupName) of
+	{ok, NChildren} ->
+	    {ok, NChildren};
+	{error, NChildren, {failed_to_start_child, FailedId, _Reason}} ->
+            NewPid = if FailedId =:= Child#child.id ->
+                             restarting(Child#child.pid);
+                        true ->
+                             ?restarting(undefined)
+                     end,
+	    {{try_again, FailedId}, set_pid(NewPid,FailedId,NChildren)}
     end.
 
 restarting(Pid) when is_pid(Pid) -> ?restarting(Pid);
 restarting(RPid) -> RPid.
 
+-spec try_again_restart(child_id() | {'restarting',pid()}) -> 'ok'.
+try_again_restart(TryAgainId) ->
+    gen_server:cast(self(), {try_again_restart, TryAgainId}).
+
 %%-----------------------------------------------------------------
 %% Func: terminate_children/2
-%% Args: Children = [child_rec()] in termination order
+%% Args: Children = children() % Ids in termination order
 %%       SupName = {local, atom()} | {global, atom()} | {pid(),Mod}
-%% Returns: NChildren = [child_rec()] in
-%%          startup order (reversed termination order)
+%% Returns: NChildren = children() % Ids in startup order
+%%                                 % (reversed termination order)
 %%-----------------------------------------------------------------
 terminate_children(Children, SupName) ->
-    terminate_children(Children, SupName, []).
-
-%% Temporary children should not be restarted and thus should
-%% be skipped when building the list of terminated children, although
-%% we do want them to be shut down as many functions from this module
-%% use this function to just clear everything.
-terminate_children([Child = #child{restart_type=temporary} | Children], SupName, Res) ->
-    _ = do_terminate(Child, SupName),
-    terminate_children(Children, SupName, Res);
-terminate_children([Child | Children], SupName, Res) ->
-    NChild = do_terminate(Child, SupName),
-    terminate_children(Children, SupName, [NChild | Res]);
-terminate_children([], _SupName, Res) ->
-    Res.
+    Terminate =
+        fun(_Id,Child) when ?is_temporary(Child) ->
+                %% Temporary children should not be restarted and thus should
+                %% be skipped when building the list of terminated children.
+                do_terminate(Child, SupName),
+                remove;
+           (_Id,Child) ->
+                do_terminate(Child, SupName),
+                {update,Child#child{pid=undefined}}
+        end,
+    {ok,NChildren} = children_map(Terminate, Children),
+    NChildren.
 
 do_terminate(Child, SupName) when is_pid(Child#child.pid) ->
     case shutdown(Child#child.pid, Child#child.shutdown) of
         ok ->
             ok;
-        {error, normal} when Child#child.restart_type =/= permanent ->
+        {error, normal} when not (?is_permanent(Child)) ->
             ok;
         {error, OtherReason} ->
             report_error(shutdown_error, OtherReason, Child, SupName)
     end,
-    Child#child{pid = undefined};
-do_terminate(Child, _SupName) ->
-    Child#child{pid = undefined}.
+    ok;
+do_terminate(_Child, _SupName) ->
+    ok.
 
 %%-----------------------------------------------------------------
 %% Shutdowns a child. We must check the EXIT value 
@@ -996,66 +897,50 @@ monitor_child(Pid) ->
 	    ok   
     end.
 
-
 %%-----------------------------------------------------------------
-%% Func: terminate_dynamic_children/3
-%% Args: Child    = child_rec()
-%%       Dynamics = ?DICT() | ?SET()
-%%       SupName  = {local, atom()} | {global, atom()} | {pid(),Mod}
+%% Func: terminate_dynamic_children/1
+%% Args: State
 %% Returns: ok
 %%
-%%
 %% Shutdown all dynamic children. This happens when the supervisor is
 %% stopped. Because the supervisor can have millions of dynamic children, we
-%% can have an significative overhead here.
+%% can have a significative overhead here.
 %%-----------------------------------------------------------------
-terminate_dynamic_children(Child, Dynamics, SupName) ->
-    {Pids, EStack0} = monitor_dynamic_children(Child, Dynamics),
-    Sz = ?SETS:size(Pids),
+terminate_dynamic_children(State) ->
+    Child = get_dynamic_child(State),
+    {Pids, EStack0} = monitor_dynamic_children(Child,State),
+    Sz = sets:size(Pids),
     EStack = case Child#child.shutdown of
                  brutal_kill ->
-                     ?SETS:fold(fun(P, _) -> exit(P, kill) end, ok, Pids),
+                     sets:fold(fun(P, _) -> exit(P, kill) end, ok, Pids),
                      wait_dynamic_children(Child, Pids, Sz, undefined, EStack0);
                  infinity ->
-                     ?SETS:fold(fun(P, _) -> exit(P, shutdown) end, ok, Pids),
+                     sets:fold(fun(P, _) -> exit(P, shutdown) end, ok, Pids),
                      wait_dynamic_children(Child, Pids, Sz, undefined, EStack0);
                  Time ->
-                     ?SETS:fold(fun(P, _) -> exit(P, shutdown) end, ok, Pids),
+                     sets:fold(fun(P, _) -> exit(P, shutdown) end, ok, Pids),
                      TRef = erlang:start_timer(Time, self(), kill),
                      wait_dynamic_children(Child, Pids, Sz, TRef, EStack0)
              end,
     %% Unroll stacked errors and report them
-    ?DICTS:fold(fun(Reason, Ls, _) ->
-                       report_error(shutdown_error, Reason,
-                                    Child#child{pid=Ls}, SupName)
-               end, ok, EStack).
-
-
-monitor_dynamic_children(#child{restart_type=temporary}, Dynamics) ->
-    ?SETS:fold(fun(P, {Pids, EStack}) ->
-                       case monitor_child(P) of
-                           ok ->
-                               {?SETS:add_element(P, Pids), EStack};
-                           {error, normal} ->
-                               {Pids, EStack};
-                           {error, Reason} ->
-                               {Pids, ?DICTS:append(Reason, P, EStack)}
-                       end
-               end, {?SETS:new(), ?DICTS:new()}, Dynamics);
-monitor_dynamic_children(#child{restart_type=RType}, Dynamics) ->
-    ?DICTS:fold(fun(P, _, {Pids, EStack}) when is_pid(P) ->
-                       case monitor_child(P) of
-                           ok ->
-                               {?SETS:add_element(P, Pids), EStack};
-                           {error, normal} when RType =/= permanent ->
-                               {Pids, EStack};
-                           {error, Reason} ->
-                               {Pids, ?DICTS:append(Reason, P, EStack)}
-                       end;
-		  (?restarting(_), _, {Pids, EStack}) ->
-		       {Pids, EStack}
-               end, {?SETS:new(), ?DICTS:new()}, Dynamics).
-
+    dict:fold(fun(Reason, Ls, _) ->
+                      report_error(shutdown_error, Reason,
+                                   Child#child{pid=Ls}, State#state.name)
+              end, ok, EStack).
+
+monitor_dynamic_children(Child,State) ->
+    dyn_fold(fun(P,{Pids, EStack}) when is_pid(P) ->
+                     case monitor_child(P) of
+                         ok ->
+                             {sets:add_element(P, Pids), EStack};
+                         {error, normal} when not (?is_permanent(Child)) ->
+                             {Pids, EStack};
+                         {error, Reason} ->
+                             {Pids, dict:append(Reason, P, EStack)}
+                     end;
+                (?restarting(_), {Pids, EStack}) ->
+                     {Pids, EStack}
+             end, {sets:new(), dict:new()}, State).
 
 wait_dynamic_children(_Child, _Pids, 0, undefined, EStack) ->
     EStack;
@@ -1073,39 +958,38 @@ wait_dynamic_children(#child{shutdown=brutal_kill} = Child, Pids, Sz,
                       TRef, EStack) ->
     receive
         {'DOWN', _MRef, process, Pid, killed} ->
-            wait_dynamic_children(Child, ?SETS:del_element(Pid, Pids), Sz-1,
+            wait_dynamic_children(Child, sets:del_element(Pid, Pids), Sz-1,
                                   TRef, EStack);
 
         {'DOWN', _MRef, process, Pid, Reason} ->
-            wait_dynamic_children(Child, ?SETS:del_element(Pid, Pids), Sz-1,
-                                  TRef, ?DICTS:append(Reason, Pid, EStack))
+            wait_dynamic_children(Child, sets:del_element(Pid, Pids), Sz-1,
+                                  TRef, dict:append(Reason, Pid, EStack))
     end;
-wait_dynamic_children(#child{restart_type=RType} = Child, Pids, Sz,
-                      TRef, EStack) ->
+wait_dynamic_children(Child, Pids, Sz, TRef, EStack) ->
     receive
         {'DOWN', _MRef, process, Pid, shutdown} ->
-            wait_dynamic_children(Child, ?SETS:del_element(Pid, Pids), Sz-1,
+            wait_dynamic_children(Child, sets:del_element(Pid, Pids), Sz-1,
                                   TRef, EStack);
 
         {'DOWN', _MRef, process, Pid, {shutdown, _}} ->
-            wait_dynamic_children(Child, ?SETS:del_element(Pid, Pids), Sz-1,
+            wait_dynamic_children(Child, sets:del_element(Pid, Pids), Sz-1,
                                   TRef, EStack);
 
-        {'DOWN', _MRef, process, Pid, normal} when RType =/= permanent ->
-            wait_dynamic_children(Child, ?SETS:del_element(Pid, Pids), Sz-1,
+        {'DOWN', _MRef, process, Pid, normal} when not (?is_permanent(Child)) ->
+            wait_dynamic_children(Child, sets:del_element(Pid, Pids), Sz-1,
                                   TRef, EStack);
 
         {'DOWN', _MRef, process, Pid, Reason} ->
-            wait_dynamic_children(Child, ?SETS:del_element(Pid, Pids), Sz-1,
-                                  TRef, ?DICTS:append(Reason, Pid, EStack));
+            wait_dynamic_children(Child, sets:del_element(Pid, Pids), Sz-1,
+                                  TRef, dict:append(Reason, Pid, EStack));
 
         {timeout, TRef, kill} ->
-            ?SETS:fold(fun(P, _) -> exit(P, kill) end, ok, Pids),
+            sets:fold(fun(P, _) -> exit(P, kill) end, ok, Pids),
             wait_dynamic_children(Child, Pids, Sz, undefined, EStack)
     end.
 
 %%-----------------------------------------------------------------
-%% Child/State manipulating functions.
+%% Access #state.children
 %%-----------------------------------------------------------------
 
 %% Note we do not want to save the parameter list for temporary processes as
@@ -1113,114 +997,184 @@ wait_dynamic_children(#child{restart_type=RType} = Child, Pids, Sz,
 %% Especially for dynamic children to simple_one_for_one supervisors
 %% it could become very costly as it is not uncommon to spawn
 %% very many such processes.
-save_child(#child{restart_type = temporary,
-		  mfargs = {M, F, _}} = Child, #state{children = Children} = State) ->
-    State#state{children = [Child#child{mfargs = {M, F, undefined}} |Children]};
-save_child(Child, #state{children = Children} = State) ->
-    State#state{children = [Child |Children]}.
-
-save_dynamic_child(temporary, Pid, _, #state{dynamics = Dynamics} = State) ->
-    DynamicsDb = dynamics_db(temporary, Dynamics),
-    State#state{dynamics = {set, ?SETS:add_element(Pid, DynamicsDb)}};
-save_dynamic_child(RestartType, Pid, Args, #state{dynamics = Dynamics} = State) ->
-    DynamicsDb = dynamics_db(RestartType, Dynamics),
-    State#state{dynamics = {dict, ?DICTS:store(Pid, Args, DynamicsDb)}}.
-
-dynamics_db(temporary, undefined) ->
-    ?SETS:new();
-dynamics_db(_, undefined) ->
-    ?DICTS:new();
-dynamics_db(_, {_Tag, DynamicsDb}) ->
-    DynamicsDb.
-
-dynamic_child_args(_Pid, temporary, _DynamicsDb) ->
-    {ok, undefined};
-dynamic_child_args(Pid, _RT, {dict, DynamicsDb}) ->
-    ?DICTS:find(Pid, DynamicsDb);
-dynamic_child_args(_Pid, _RT, undefined) ->
-    error.
-
-state_del_child(#child{pid = Pid, restart_type = temporary}, State) when ?is_simple(State) ->
-    NDynamics = ?SETS:del_element(Pid, dynamics_db(temporary, State#state.dynamics)),
-    State#state{dynamics = {set, NDynamics}};
-state_del_child(#child{pid = Pid, restart_type = RType}, State) when ?is_simple(State) ->
-    NDynamics = ?DICTS:erase(Pid, dynamics_db(RType, State#state.dynamics)),
-    State#state{dynamics = {dict, NDynamics}};
-state_del_child(Child, State) ->
-    NChildren = del_child(Child#child.name, State#state.children),
-    State#state{children = NChildren}.
-
-del_child(Name, [Ch|Chs]) when Ch#child.name =:= Name, Ch#child.restart_type =:= temporary ->
-    Chs;
-del_child(Name, [Ch|Chs]) when Ch#child.name =:= Name ->
-    [Ch#child{pid = undefined} | Chs];
-del_child(Pid, [Ch|Chs]) when Ch#child.pid =:= Pid, Ch#child.restart_type =:= temporary ->
-    Chs;
-del_child(Pid, [Ch|Chs]) when Ch#child.pid =:= Pid ->
-    [Ch#child{pid = undefined} | Chs];
-del_child(Name, [Ch|Chs]) ->
-    [Ch|del_child(Name, Chs)];
-del_child(_, []) ->
-    [].
+-spec save_child(child_rec(), state()) -> state().
+save_child(#child{mfargs = {M, F, _}} = Child, State) when ?is_temporary(Child) ->
+    do_save_child(Child#child{mfargs = {M, F, undefined}}, State);
+save_child(Child, State) ->
+    do_save_child(Child, State).
+
+-spec do_save_child(child_rec(), state()) -> state().
+do_save_child(#child{id = Id} = Child, #state{children = {Ids,Db}} = State) ->
+    State#state{children = {[Id|Ids],Db#{Id => Child}}}.
+
+-spec del_child(child_rec(), state()) -> state();
+               (child_id(), children()) -> children().
+del_child(#child{pid = Pid}, State) when ?is_simple(State) ->
+    dyn_erase(Pid,State);
+del_child(Child, State) when is_record(Child,child), is_record(State,state) ->
+    NChildren = del_child(Child#child.id, State#state.children),
+    State#state{children = NChildren};
+del_child(Id, {Ids,Db}) ->
+    case maps:get(Id, Db) of
+        Child when Child#child.restart_type =:= temporary ->
+            {lists:delete(Id, Ids), maps:remove(Id, Db)};
+        Child ->
+            {Ids, Db#{Id=>Child#child{pid=undefined}}}
+    end.
 
-%% Chs = [S4, S3, Ch, S1, S0]
-%% Ret: {[S4, S3, Ch], [S1, S0]}
-split_child(Name, Chs) ->
-    split_child(Name, Chs, []).
-
-split_child(Name, [Ch|Chs], After) when Ch#child.name =:= Name ->
-    {lists:reverse([Ch#child{pid = undefined} | After]), Chs};
-split_child(Pid, [Ch|Chs], After) when Ch#child.pid =:= Pid ->
-    {lists:reverse([Ch#child{pid = undefined} | After]), Chs};
-split_child(Name, [Ch|Chs], After) ->
-    split_child(Name, Chs, [Ch | After]);
-split_child(_, [], After) ->
-    {lists:reverse(After), []}.
-
-get_child(Name, State) ->
-    get_child(Name, State, false).
-
-get_child(Pid, State, AllowPid) when AllowPid, is_pid(Pid) ->
-    get_dynamic_child(Pid, State);
-get_child(Name, State, _) ->
-    lists:keysearch(Name, #child.name, State#state.children).
-
-get_dynamic_child(Pid, #state{children=[Child], dynamics=Dynamics}) ->
-    case is_dynamic_pid(Pid, Dynamics) of
-	true ->
-	    {value, Child#child{pid=Pid}};
-	false ->
-	    RPid = restarting(Pid),
-	    case is_dynamic_pid(RPid, Dynamics) of
-		true ->
-		    {value, Child#child{pid=RPid}};
-		false ->
+%% In: {[S4, S3, Ch, S1, S0],Db}
+%% Ret: {{[S4, S3, Ch],Db1}, {[S1, S0],Db2}}
+%% Db1 and Db2 contain the keys in the lists they are associated with.
+-spec split_child(child_id(), children()) -> {children(), children()}.
+split_child(Id, {Ids,Db}) ->
+    {IdsAfter,IdsBefore} = split_ids(Id, Ids, []),
+    DbBefore = maps:with(IdsBefore,Db),
+    #{Id:=Ch} = DbAfter = maps:with(IdsAfter,Db),
+    {{IdsAfter,DbAfter#{Id=>Ch#child{pid=undefined}}},{IdsBefore,DbBefore}}.
+
+split_ids(Id, [Id|Ids], After) ->
+    {lists:reverse([Id|After]), Ids};
+split_ids(Id, [Other|Ids], After) ->
+    split_ids(Id, Ids, [Other | After]).
+
+%% Find the child record for a given Pid (dynamic child) or Id
+%% (non-dynamic child). This is called from the API functions.
+-spec find_child(pid() | child_id(), state()) -> {ok,child_rec()} | error.
+find_child(Pid, State) when is_pid(Pid), ?is_simple(State) ->
+    case find_dynamic_child(Pid, State) of
+        error ->
+            case find_dynamic_child(restarting(Pid), State) of
+                error ->
 		    case erlang:is_process_alive(Pid) of
-			true -> false;
-			false -> {value, Child}
-		    end
-	    end
+			true -> error;
+			false -> {ok, get_dynamic_child(State)}
+		    end;
+                Other ->
+                    Other
+            end;
+        Other ->
+            Other
+    end;
+find_child(Id, #state{children = {_Ids,Db}}) ->
+    maps:find(Id, Db).
+
+%% Get the child record - either by child id or by pid.  If
+%% simple_one_for_one, then insert the pid and args into the returned
+%% child record. This is called when trying to restart the child.
+-spec find_child_and_args(IdOrPid, state()) -> {ok, child_rec()} | error when
+      IdOrPid :: pid() | {restarting,pid()} | child_id().
+find_child_and_args(Pid, State) when ?is_simple(State) ->
+    case find_dynamic_child(Pid, State) of
+        {ok,#child{mfargs={M,F,_}} = Child} ->
+            {ok, Args} = dyn_args(Pid, State),
+            {ok, Child#child{mfargs = {M, F, Args}}};
+        error ->
+            error
+    end;
+find_child_and_args(Pid, State) when is_pid(Pid) ->
+    find_child_by_pid(Pid, State);
+find_child_and_args(Id, #state{children={_Ids,Db}})  ->
+    maps:find(Id, Db).
+
+%% Given the pid, find the child record for a dynamic child, and
+%% include the pid in the returned record.
+-spec find_dynamic_child(IdOrPid, state()) -> {ok, child_rec()} | error when
+      IdOrPid :: pid() | {restarting,pid()} | child_id().
+find_dynamic_child(Pid, State) ->
+    case dyn_exists(Pid, State) of
+        true ->
+            Child = get_dynamic_child(State),
+            {ok, Child#child{pid=Pid}};
+        false ->
+            error
     end.
 
-is_dynamic_pid(Pid, {dict, Dynamics}) ->
-    ?DICTS:is_key(Pid, Dynamics);
-is_dynamic_pid(Pid, {set, Dynamics}) ->
-    ?SETS:is_element(Pid, Dynamics);
-is_dynamic_pid(_Pid, undefined) ->
-    false.
-
-replace_child(Child, State) ->
-    Chs = do_replace_child(Child, State#state.children),
-    State#state{children = Chs}.
-
-do_replace_child(Child, [Ch|Chs]) when Ch#child.name =:= Child#child.name ->
-    [Child | Chs];
-do_replace_child(Child, [Ch|Chs]) ->
-    [Ch|do_replace_child(Child, Chs)].
+%% Given the pid, find the child record for a non-dyanamic child.
+-spec find_child_by_pid(IdOrPid, state()) -> {ok,child_rec()} | error when
+      IdOrPid :: pid() | {restarting,pid()}.
+find_child_by_pid(Pid,#state{children={_Ids,Db}}) ->
+    Fun = fun(_Id,#child{pid=P}=Ch,_) when P =:= Pid ->
+                  throw(Ch);
+             (_,_,error) ->
+                  error
+          end,
+    try maps:fold(Fun,error,Db)
+    catch throw:Child -> {ok,Child}
+    end.
 
-remove_child(Child, State) ->
-    Chs = lists:keydelete(Child#child.name, #child.name, State#state.children),
-    State#state{children = Chs}.
+%% Get the child record from a simple_one_for_one supervisor - no pid
+%% It is assumed that the child can always be found
+-spec get_dynamic_child(state()) -> child_rec().
+get_dynamic_child(#state{children={[Id],Db}}) ->
+    #{Id := Child} = Db,
+    Child.
+
+%% Update pid in the given child record and store it in the process state
+-spec set_pid(term(), child_id(), state()) -> state();
+             (term(), child_id(), children()) -> children().
+set_pid(Pid, Id, #state{children=Children} = State) ->
+    State#state{children = set_pid(Pid, Id, Children)};
+set_pid(Pid, Id, {Ids, Db}) ->
+    NewDb = maps:update_with(Id, fun(Child) -> Child#child{pid=Pid} end, Db),
+    {Ids,NewDb}.
+
+%% Remove the Id and the child record from the process state
+-spec remove_child(child_id(), state()) -> state().
+remove_child(Id, #state{children={Ids,Db}} = State) ->
+    NewIds = lists:delete(Id,Ids),
+    NewDb = maps:remove(Id,Db),
+    State#state{children = {NewIds,NewDb}}.
+
+%% In the order of Ids, traverse the children and update each child
+%% according to the return value of the Fun.
+%% On error, abort and return the merge of the old and the updated map.
+%% NOTE: The returned list of Ids is reverted compared to the input.
+-spec children_map(Fun, children()) -> {ok, children()} |
+                                       {error,children(),Reason} when
+      Fun :: fun((child_id(),child_rec()) -> {update,child_rec()} |
+                                             remove |
+                                             {abort, Reason}),
+      Reason :: term().
+children_map(Fun,{Ids,Db}) ->
+    children_map(Fun, Ids, Db, []).
+
+children_map(Fun,[Id|Ids],Db,Acc) ->
+    case Fun(Id,maps:get(Id,Db)) of
+        {update,Child} ->
+            children_map(Fun,Ids,Db#{Id => Child},[Id|Acc]);
+        remove ->
+            children_map(Fun,Ids,maps:remove(Id,Db),Acc);
+        {abort,Reason} ->
+            {error,{lists:reverse(Ids)++[Id|Acc],Db},Reason}
+    end;
+children_map(_Fun,[],Db,Acc) ->
+    {ok,{Acc,Db}}.
+
+%% In the order of Ids, map over all children and return the list
+-spec children_to_list(Fun, children()) -> List when
+      Fun :: fun((child_id(), child_rec()) -> Elem),
+      List :: list(Elem),
+      Elem :: term().
+children_to_list(Fun,{Ids,Db}) ->
+    children_to_list(Fun, Ids, Db, []).
+children_to_list(Fun,[Id|Ids],Db,Acc) ->
+    children_to_list(Fun,Ids,Db,[Fun(Id,maps:get(Id,Db))|Acc]);
+children_to_list(_Fun,[],_Db,Acc) ->
+    lists:reverse(Acc).
+
+%% The order is not important - so ignore Ids
+-spec children_fold(Fun, Acc0, children()) -> Acc1 when
+      Fun :: fun((child_id(), child_rec(), AccIn) -> AccOut),
+      Acc0 :: term(),
+      Acc1 :: term(),
+      AccIn :: term(),
+      AccOut :: term().
+children_fold(Fun,Init,{_Ids,Db}) ->
+    maps:fold(Fun, Init, Db).
+
+-spec append(children(), children()) -> children().
+append({Ids1,Db1},{Ids2,Db2}) ->
+    {Ids1++Ids2,maps:merge(Db1,Db2)}.
 
 %%-----------------------------------------------------------------
 %% Func: init_state/4
@@ -1290,27 +1244,27 @@ supname(N, _)      -> N.
 %%% Returns: {ok, [child_rec()]} | Error
 %%% ------------------------------------------------------
 
-check_startspec(Children) -> check_startspec(Children, []).
+check_startspec(Children) -> check_startspec(Children, [], #{}).
 
-check_startspec([ChildSpec|T], Res) ->
+check_startspec([ChildSpec|T], Ids, Db) ->
     case check_childspec(ChildSpec) of
-	{ok, Child} ->
-	    case lists:keymember(Child#child.name, #child.name, Res) of
+	{ok, #child{id=Id}=Child} ->
+	    case maps:is_key(Id, Db) of
 		%% The error message duplicate_child_name is kept for
 		%% backwards compatibility, although
 		%% duplicate_child_id would be more correct.
-		true -> {duplicate_child_name, Child#child.name};
-		false -> check_startspec(T, [Child | Res])
+		true -> {duplicate_child_name, Id};
+		false -> check_startspec(T, [Id | Ids], Db#{Id=>Child})
 	    end;
 	Error -> Error
     end;
-check_startspec([], Res) ->
-    {ok, lists:reverse(Res)}.
+check_startspec([], Ids, Db) ->
+    {ok, {lists:reverse(Ids),Db}}.
 
 check_childspec(ChildSpec) when is_map(ChildSpec) ->
     catch do_check_childspec(maps:merge(?default_child_spec,ChildSpec));
-check_childspec({Name, Func, RestartType, Shutdown, ChildType, Mods}) ->
-    check_childspec(#{id => Name,
+check_childspec({Id, Func, RestartType, Shutdown, ChildType, Mods}) ->
+    check_childspec(#{id => Id,
 		      start => Func,
 		      restart => RestartType,
 		      shutdown => Shutdown,
@@ -1320,15 +1274,15 @@ check_childspec(X) -> {invalid_child_spec, X}.
 
 do_check_childspec(#{restart := RestartType,
 		     type := ChildType} = ChildSpec)->
-    Name = case ChildSpec of
-	       #{id := N} -> N;
+    Id = case ChildSpec of
+	       #{id := I} -> I;
 	       _ -> throw(missing_id)
 	   end,
     Func = case ChildSpec of
 	       #{start := F} -> F;
 	       _ -> throw(missing_start)
 	   end,
-    validName(Name),
+    validId(Id),
     validFunc(Func),
     validRestartType(RestartType),
     validChildType(ChildType),
@@ -1343,14 +1297,14 @@ do_check_childspec(#{restart := RestartType,
 	       _ -> {M,_,_} = Func, [M]
 	   end,
     validMods(Mods),
-    {ok, #child{name = Name, mfargs = Func, restart_type = RestartType,
+    {ok, #child{id = Id, mfargs = Func, restart_type = RestartType,
 		shutdown = Shutdown, child_type = ChildType, modules = Mods}}.
 
 validChildType(supervisor) -> true;
 validChildType(worker) -> true;
 validChildType(What) -> throw({invalid_child_type, What}).
 
-validName(_Name) -> true.
+validId(_Id) -> true.
 
 validFunc({M, F, A}) when is_atom(M), 
                           is_atom(F), 
@@ -1379,13 +1333,13 @@ validMods(Mods) when is_list(Mods) ->
 		  Mods);
 validMods(Mods) -> throw({invalid_modules, Mods}).
 
-child_to_spec(#child{name = Name,
+child_to_spec(#child{id = Id,
 		    mfargs = Func,
 		    restart_type = RestartType,
 		    shutdown = Shutdown,
 		    child_type = ChildType,
 		    modules = Mods}) ->
-    #{id => Name,
+    #{id => Id,
       start => Func,
       restart => RestartType,
       shutdown => Shutdown,
@@ -1439,17 +1393,16 @@ report_error(Error, Reason, Child, SupName) ->
 		{offender, extract_child(Child)}],
     error_logger:error_report(supervisor_report, ErrorMsg).
 
-
 extract_child(Child) when is_list(Child#child.pid) ->
     [{nb_children, length(Child#child.pid)},
-     {id, Child#child.name},
+     {id, Child#child.id},
      {mfargs, Child#child.mfargs},
      {restart_type, Child#child.restart_type},
      {shutdown, Child#child.shutdown},
      {child_type, Child#child.child_type}];
 extract_child(Child) ->
     [{pid, Child#child.pid},
-     {id, Child#child.name},
+     {id, Child#child.id},
      {mfargs, Child#child.mfargs},
      {restart_type, Child#child.restart_type},
      {shutdown, Child#child.shutdown},
@@ -1465,3 +1418,46 @@ format_status(terminate, [_PDict, State]) ->
 format_status(_, [_PDict, State]) ->
     [{data, [{"State", State}]},
      {supervisor, [{"Callback", State#state.module}]}].
+
+%%%-----------------------------------------------------------------
+%%% Dynamics database access
+dyn_size(#state{dynamics = {Mod,Db}}) ->
+    Mod:size(Db).
+
+dyn_erase(Pid,#state{dynamics={sets,Db}}=State) ->
+    State#state{dynamics={sets,sets:del_element(Pid,Db)}};
+dyn_erase(Pid,#state{dynamics={maps,Db}}=State) ->
+    State#state{dynamics={maps,maps:remove(Pid,Db)}}.
+
+dyn_store(Pid,_,#state{dynamics={sets,Db}}=State) ->
+    State#state{dynamics={sets,sets:add_element(Pid,Db)}};
+dyn_store(Pid,Args,#state{dynamics={maps,Db}}=State) ->
+    State#state{dynamics={maps,Db#{Pid => Args}}}.
+
+dyn_fold(Fun,Init,#state{dynamics={sets,Db}}) ->
+    sets:fold(Fun,Init,Db);
+dyn_fold(Fun,Init,#state{dynamics={maps,Db}}) ->
+    maps:fold(fun(Pid,_,Acc) -> Fun(Pid,Acc) end, Init, Db).
+
+dyn_map(Fun, #state{dynamics={sets,Db}}) ->
+    lists:map(Fun, sets:to_list(Db));
+dyn_map(Fun, #state{dynamics={maps,Db}}) ->
+    lists:map(Fun, maps:keys(Db)).
+
+dyn_exists(Pid, #state{dynamics={sets, Db}}) ->
+    sets:is_element(Pid, Db);
+dyn_exists(Pid, #state{dynamics={maps, Db}}) ->
+    maps:is_key(Pid, Db).
+
+dyn_args(_Pid, #state{dynamics={sets, _Db}}) ->
+    {ok,undefined};
+dyn_args(Pid, #state{dynamics={maps, Db}}) ->
+    maps:find(Pid, Db).
+
+dyn_init(State) ->
+    dyn_init(get_dynamic_child(State),State).
+
+dyn_init(Child,State) when ?is_temporary(Child) ->
+    State#state{dynamics={sets,sets:new()}};
+dyn_init(_Child,State) ->
+    State#state{dynamics={maps,maps:new()}}.
diff --git a/lib/stdlib/src/uri_string.erl b/lib/stdlib/src/uri_string.erl
new file mode 100644
index 0000000000..a84679c595
--- /dev/null
+++ b/lib/stdlib/src/uri_string.erl
@@ -0,0 +1,2069 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+%% [RFC 3986, Chapter 2.2. Reserved Characters]
+%%
+%%   reserved    = gen-delims / sub-delims
+%%
+%%   gen-delims  = ":" / "/" / "?" / "#" / "[" / "]" / "@"
+%%
+%%   sub-delims  = "!" / "$" / "&" / "'" / "(" / ")"
+%%               / "*" / "+" / "," / ";" / "="
+%%
+%%
+%% [RFC 3986, Chapter 2.3. Unreserved Characters]
+%%
+%%   unreserved  = ALPHA / DIGIT / "-" / "." / "_" / "~"
+%%
+%%
+%% [RFC 3986, Chapter 3. Syntax Components]
+%%
+%% The generic URI syntax consists of a hierarchical sequence of
+%% components referred to as the scheme, authority, path, query, and
+%% fragment.
+%%
+%%    URI         = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
+%%
+%%    hier-part   = "//" authority path-abempty
+%%                   / path-absolute
+%%                   / path-rootless
+%%                   / path-empty
+%%
+%%    The scheme and path components are required, though the path may be
+%%    empty (no characters).  When authority is present, the path must
+%%    either be empty or begin with a slash ("/") character.  When
+%%    authority is not present, the path cannot begin with two slash
+%%    characters ("//").  These restrictions result in five different ABNF
+%%    rules for a path (Section 3.3), only one of which will match any
+%%    given URI reference.
+%%
+%%    The following are two example URIs and their component parts:
+%%
+%%          foo://example.com:8042/over/there?name=ferret#nose
+%%          \_/   \______________/\_________/ \_________/ \__/
+%%           |           |            |            |        |
+%%        scheme     authority       path        query   fragment
+%%           |   _____________________|__
+%%          / \ /                        \
+%%          urn:example:animal:ferret:nose
+%%
+%%
+%% [RFC 3986, Chapter 3.1. Scheme]
+%%
+%% Each URI begins with a scheme name that refers to a specification for
+%% assigning identifiers within that scheme.
+%%
+%%    scheme      = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
+%%
+%%
+%% [RFC 3986, Chapter 3.2. Authority]
+%%
+%% Many URI schemes include a hierarchical element for a naming
+%% authority so that governance of the name space defined by the
+%% remainder of the URI is delegated to that authority (which may, in
+%% turn, delegate it further).
+%%
+%%    authority   = [ userinfo "@" ] host [ ":" port ]
+%%
+%%
+%% [RFC 3986, Chapter 3.2.1. User Information]
+%%
+%% The userinfo subcomponent may consist of a user name and, optionally,
+%% scheme-specific information about how to gain authorization to access
+%% the resource. The user information, if present, is followed by a
+%% commercial at-sign ("@") that delimits it from the host.
+%%
+%%    userinfo    = *( unreserved / pct-encoded / sub-delims / ":" )
+%%
+%%
+%% [RFC 3986, Chapter 3.2.2. Host]
+%%
+%% The host subcomponent of authority is identified by an IP literal
+%% encapsulated within square brackets, an IPv4 address in dotted-
+%% decimal form, or a registered name.
+%%
+%%    host        = IP-literal / IPv4address / reg-name
+%%
+%%    IP-literal = "[" ( IPv6address / IPvFuture  ) "]"
+%%
+%%    IPvFuture  = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
+%%
+%%    IPv6address =                            6( h16 ":" ) ls32
+%%                /                       "::" 5( h16 ":" ) ls32
+%%                / [               h16 ] "::" 4( h16 ":" ) ls32
+%%                / [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
+%%                / [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
+%%                / [ *3( h16 ":" ) h16 ] "::"    h16 ":"   ls32
+%%                / [ *4( h16 ":" ) h16 ] "::"              ls32
+%%                / [ *5( h16 ":" ) h16 ] "::"              h16
+%%                / [ *6( h16 ":" ) h16 ] "::"
+%%
+%%    ls32        = ( h16 ":" h16 ) / IPv4address
+%%                ; least-significant 32 bits of address
+%%
+%%    h16         = 1*4HEXDIG
+%%                ; 16 bits of address represented in hexadecimal
+%%
+%%    IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
+%%
+%%    dec-octet   = DIGIT                 ; 0-9
+%%                / %x31-39 DIGIT         ; 10-99
+%%                / "1" 2DIGIT            ; 100-199
+%%                / "2" %x30-34 DIGIT     ; 200-249
+%%                / "25" %x30-35          ; 250-255
+%%
+%%    reg-name    = *( unreserved / pct-encoded / sub-delims )
+%%
+%%
+%% [RFC 3986, Chapter 3.2.2. Port]
+%%
+%% The port subcomponent of authority is designated by an optional port
+%% number in decimal following the host and delimited from it by a
+%% single colon (":") character.
+%%
+%%    port        = *DIGIT
+%%
+%%
+%% [RFC 3986, Chapter 3.3. Path]
+%%
+%% The path component contains data, usually organized in hierarchical
+%% form, that, along with data in the non-hierarchical query component
+%% (Section 3.4), serves to identify a resource within the scope of the
+%% URI's scheme and naming authority (if any).  The path is terminated
+%% by the first question mark ("?") or number sign ("#") character, or
+%% by the end of the URI.
+%%
+%%    path          = path-abempty    ; begins with "/" or is empty
+%%                  / path-absolute   ; begins with "/" but not "//"
+%%                  / path-noscheme   ; begins with a non-colon segment
+%%                  / path-rootless   ; begins with a segment
+%%                  / path-empty      ; zero characters
+%%
+%%    path-abempty  = *( "/" segment )
+%%    path-absolute = "/" [ segment-nz *( "/" segment ) ]
+%%    path-noscheme = segment-nz-nc *( "/" segment )
+%%    path-rootless = segment-nz *( "/" segment )
+%%    path-empty    = 0<pchar>
+%%    segment       = *pchar
+%%    segment-nz    = 1*pchar
+%%    segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" )
+%%                  ; non-zero-length segment without any colon ":"
+%%
+%%    pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
+%%
+%%
+%% [RFC 3986, Chapter 3.4. Query]
+%%
+%% The query component contains non-hierarchical data that, along with
+%% data in the path component (Section 3.3), serves to identify a
+%% resource within the scope of the URI's scheme and naming authority
+%% (if any).  The query component is indicated by the first question
+%% mark ("?") character and terminated by a number sign ("#") character
+%% or by the end of the URI.
+%%
+%%    query       = *( pchar / "/" / "?" )
+%%
+%%
+%% [RFC 3986, Chapter 3.5. Fragment]
+%%
+%% The fragment identifier component of a URI allows indirect
+%% identification of a secondary resource by reference to a primary
+%% resource and additional identifying information.
+%%
+%%    fragment    = *( pchar / "/" / "?" )
+%%
+%%
+%% [RFC 3986, Chapter 4.1. URI Reference]
+%%
+%% URI-reference is used to denote the most common usage of a resource
+%% identifier.
+%%
+%%    URI-reference = URI / relative-ref
+%%
+%%
+%% [RFC 3986, Chapter 4.2. Relative Reference]
+%%
+%% A relative reference takes advantage of the hierarchical syntax
+%% (Section 1.2.3) to express a URI reference relative to the name space
+%% of another hierarchical URI.
+%%
+%%    relative-ref  = relative-part [ "?" query ] [ "#" fragment ]
+%%
+%%    relative-part = "//" authority path-abempty
+%%                  / path-absolute
+%%                  / path-noscheme
+%%                  / path-empty
+%%
+%%
+%% [RFC 3986, Chapter 4.3. Absolute URI]
+%%
+%% Some protocol elements allow only the absolute form of a URI without
+%% a fragment identifier.  For example, defining a base URI for later
+%% use by relative references calls for an absolute-URI syntax rule that
+%% does not allow a fragment.
+%%
+%%    absolute-URI  = scheme ":" hier-part [ "?" query ]
+%%
+-module(uri_string).
+
+%%-------------------------------------------------------------------------
+%% External API
+%%-------------------------------------------------------------------------
+-export([compose_query/1, compose_query/2,
+         dissect_query/1, normalize/1, parse/1,
+         recompose/1, transcode/2]).
+-export_type([error/0, uri_map/0, uri_string/0]).
+
+
+%%-------------------------------------------------------------------------
+%% Internal API
+%%-------------------------------------------------------------------------
+-export([is_host/1, is_path/1]).  % suppress warnings
+
+
+%%-------------------------------------------------------------------------
+%% Macros
+%%-------------------------------------------------------------------------
+-define(CHAR(Char), <<Char/utf8>>).
+-define(STRING_EMPTY, <<>>).
+-define(STRING(MatchStr), <<MatchStr/binary>>).
+-define(STRING_REST(MatchStr, Rest), <<MatchStr/utf8, Rest/binary>>).
+
+-define(DEC2HEX(X),
+        if ((X) >= 0) andalso ((X) =< 9) -> (X) + $0;
+           ((X) >= 10) andalso ((X) =< 15) -> (X) + $A - 10
+        end).
+
+-define(HEX2DEC(X),
+        if ((X) >= $0) andalso ((X) =< $9) -> (X) - $0;
+           ((X) >= $A) andalso ((X) =< $F) -> (X) - $A + 10;
+           ((X) >= $a) andalso ((X) =< $f) -> (X) - $a + 10
+        end).
+
+
+%%%=========================================================================
+%%%  API
+%%%=========================================================================
+
+%%-------------------------------------------------------------------------
+%% URI compliant with RFC 3986
+%% ASCII %x21 - %x7A ("!" - "z") except
+%%   %x34    "    double quote
+%%   %x60    <    less than
+%%   %x62    >    greater than
+%%   %x92    \    backslash
+%%   %x94    ^    caret / circumflex
+%%   %x96    `    grave / accent
+%%-------------------------------------------------------------------------
+-type uri_string() :: iodata().
+-type error() :: {error, atom(), term()}.
+
+
+%%-------------------------------------------------------------------------
+%% RFC 3986, Chapter 3. Syntax Components
+%%-------------------------------------------------------------------------
+-type uri_map() ::
+  #{fragment => unicode:chardata(),
+    host => unicode:chardata(),
+    path => unicode:chardata(),
+    port => non_neg_integer() | undefined,
+    query => unicode:chardata(),
+    scheme => unicode:chardata(),
+    userinfo => unicode:chardata()} | #{}.
+
+
+%%-------------------------------------------------------------------------
+%% Normalize URIs
+%%-------------------------------------------------------------------------
+-spec normalize(URIString) -> NormalizedURI when
+      URIString :: uri_string(),
+      NormalizedURI :: uri_string().
+normalize(URIString) ->
+    %% Percent-encoding normalization and case normalization for
+    %% percent-encoded triplets are achieved by running parse and
+    %% recompose on the input URI string.
+    recompose(
+      normalize_path_segment(
+        normalize_scheme_based(
+          normalize_case(
+            parse(URIString))))).
+
+
+%%-------------------------------------------------------------------------
+%% Parse URIs
+%%-------------------------------------------------------------------------
+-spec parse(URIString) -> URIMap when
+      URIString :: uri_string(),
+      URIMap :: uri_map()
+              | error().
+parse(URIString) when is_binary(URIString) ->
+    try parse_uri_reference(URIString, #{})
+    catch
+        throw:{error, Atom, RestData} -> {error, Atom, RestData}
+    end;
+parse(URIString) when is_list(URIString) ->
+    try
+        Binary = unicode:characters_to_binary(URIString),
+        Map = parse_uri_reference(Binary, #{}),
+        convert_mapfields_to_list(Map)
+    catch
+        throw:{error, Atom, RestData} -> {error, Atom, RestData}
+    end.
+
+
+%%-------------------------------------------------------------------------
+%% Recompose URIs
+%%-------------------------------------------------------------------------
+-spec recompose(URIMap) -> URIString when
+      URIMap :: uri_map(),
+      URIString :: uri_string()
+                 | error().
+recompose(Map) ->
+    case is_valid_map(Map) of
+        false ->
+            {error, invalid_map, Map};
+        true ->
+            try
+                T0 = update_scheme(Map, empty),
+                T1 = update_userinfo(Map, T0),
+                T2 = update_host(Map, T1),
+                T3 = update_port(Map, T2),
+                T4 = update_path(Map, T3),
+                T5 = update_query(Map, T4),
+                update_fragment(Map, T5)
+            catch
+                throw:{error, Atom, RestData} -> {error, Atom, RestData}
+            end
+    end.
+
+
+%%-------------------------------------------------------------------------
+%% Transcode URIs
+%%-------------------------------------------------------------------------
+-spec transcode(URIString, Options) -> Result when
+      URIString :: uri_string(),
+      Options :: [{in_encoding, unicode:encoding()}|{out_encoding, unicode:encoding()}],
+      Result :: uri_string()
+              | error().
+transcode(URIString, Options) when is_binary(URIString) ->
+    try
+        InEnc = proplists:get_value(in_encoding, Options, utf8),
+        OutEnc = proplists:get_value(out_encoding, Options, utf8),
+        List = convert_to_list(URIString, InEnc),
+        Output = transcode(List, [], InEnc, OutEnc),
+        convert_to_binary(Output, utf8, OutEnc)
+    catch
+        throw:{error, Atom, RestData} -> {error, Atom, RestData}
+    end;
+transcode(URIString, Options) when is_list(URIString) ->
+    InEnc = proplists:get_value(in_encoding, Options, utf8),
+    OutEnc = proplists:get_value(out_encoding, Options, utf8),
+    Flattened = flatten_list(URIString, InEnc),
+    try transcode(Flattened, [], InEnc, OutEnc)
+    catch
+        throw:{error, Atom, RestData} -> {error, Atom, RestData}
+    end.
+
+
+%%-------------------------------------------------------------------------
+%% Functions for working with the query part of a URI as a list
+%% of key/value pairs.
+%% HTML5 - 4.10.22.6 URL-encoded form data
+%%-------------------------------------------------------------------------
+
+%%-------------------------------------------------------------------------
+%% Compose urlencoded query string from a list of unescaped key/value pairs.
+%% (application/x-www-form-urlencoded encoding algorithm)
+%%-------------------------------------------------------------------------
+-spec compose_query(QueryList) -> QueryString when
+      QueryList :: [{uri_string(), uri_string()}],
+      QueryString :: uri_string()
+                   | error().
+compose_query(List) ->
+    compose_query(List, [{encoding, utf8}]).
+
+
+-spec compose_query(QueryList, Options) -> QueryString when
+      QueryList :: [{uri_string(), uri_string()}],
+      Options :: [{encoding, atom()}],
+      QueryString :: uri_string()
+                   | error().
+compose_query([],_Options) ->
+    [];
+compose_query(List, Options) ->
+    try compose_query(List, Options, false, <<>>)
+    catch
+      throw:{error, Atom, RestData} -> {error, Atom, RestData}
+    end.
+%%
+compose_query([{Key,Value}|Rest], Options, IsList, Acc) ->
+    Separator = get_separator(Rest),
+    K = form_urlencode(Key, Options),
+    V = form_urlencode(Value, Options),
+    IsListNew = IsList orelse is_list(Key) orelse is_list(Value),
+    compose_query(Rest, Options, IsListNew, <<Acc/binary,K/binary,"=",V/binary,Separator/binary>>);
+compose_query([], _Options, IsList, Acc) ->
+    case IsList of
+        true -> convert_to_list(Acc, utf8);
+        false -> Acc
+    end.
+
+
+%%-------------------------------------------------------------------------
+%% Dissect a query string into a list of unescaped key/value pairs.
+%% (application/x-www-form-urlencoded decoding algorithm)
+%%-------------------------------------------------------------------------
+-spec dissect_query(QueryString) -> QueryList when
+      QueryString :: uri_string(),
+      QueryList :: [{uri_string(), uri_string()}]
+                 | error().
+dissect_query(<<>>) ->
+    [];
+dissect_query([]) ->
+    [];
+dissect_query(QueryString) when is_list(QueryString) ->
+    try
+        B = convert_to_binary(QueryString, utf8, utf8),
+        dissect_query_key(B, true, [], <<>>, <<>>)
+    catch
+        throw:{error, Atom, RestData} -> {error, Atom, RestData}
+    end;
+dissect_query(QueryString) ->
+    try dissect_query_key(QueryString, false, [], <<>>, <<>>)
+    catch
+        throw:{error, Atom, RestData} -> {error, Atom, RestData}
+    end.
+
+
+%%%========================================================================
+%%% Internal functions
+%%%========================================================================
+
+%%-------------------------------------------------------------------------
+%% Converts Map fields to lists
+%%-------------------------------------------------------------------------
+convert_mapfields_to_list(Map) ->
+    Fun = fun (_, V) when is_binary(V) -> unicode:characters_to_list(V);
+              (_, V) -> V end,
+    maps:map(Fun, Map).
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 4.1. URI Reference]
+%%
+%% URI-reference is used to denote the most common usage of a resource
+%% identifier.
+%%
+%%    URI-reference = URI / relative-ref
+%%-------------------------------------------------------------------------
+-spec parse_uri_reference(binary(), uri_map()) -> uri_map().
+parse_uri_reference(<<>>, _) -> #{path => <<>>};
+parse_uri_reference(URIString, URI) ->
+    try parse_scheme_start(URIString, URI)
+    catch
+        throw:{_,_,_} ->
+            parse_relative_part(URIString, URI)
+    end.
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 4.2. Relative Reference]
+%%
+%% A relative reference takes advantage of the hierarchical syntax
+%% (Section 1.2.3) to express a URI reference relative to the name space
+%% of another hierarchical URI.
+%%
+%%    relative-ref  = relative-part [ "?" query ] [ "#" fragment ]
+%%
+%%    relative-part = "//" authority path-abempty
+%%                  / path-absolute
+%%                  / path-noscheme
+%%                  / path-empty
+%%-------------------------------------------------------------------------
+-spec parse_relative_part(binary(), uri_map()) -> uri_map().
+parse_relative_part(?STRING_REST("//", Rest), URI) ->
+    %% Parse userinfo - "//" is NOT part of authority
+    try parse_userinfo(Rest, URI) of
+        {T, URI1} ->
+            Userinfo = calculate_parsed_userinfo(Rest, T),
+            URI2 = maybe_add_path(URI1),
+            URI2#{userinfo => decode_userinfo(Userinfo)}
+    catch
+        throw:{_,_,_} ->
+            {T, URI1} = parse_host(Rest, URI),
+            Host = calculate_parsed_host_port(Rest, T),
+            URI2 = maybe_add_path(URI1),
+            URI2#{host => decode_host(remove_brackets(Host))}
+    end;
+parse_relative_part(?STRING_REST($/, Rest), URI) ->
+    {T, URI1} = parse_segment(Rest, URI),  % path-absolute
+    Path = calculate_parsed_part(Rest, T),
+    URI1#{path => decode_path(?STRING_REST($/, Path))};
+parse_relative_part(?STRING_REST($?, Rest), URI) ->
+    {T, URI1} = parse_query(Rest, URI),  % path-empty ?query
+    Query = calculate_parsed_query_fragment(Rest, T),
+    URI2 = maybe_add_path(URI1),
+    URI2#{query => decode_query(Query)};
+parse_relative_part(?STRING_REST($#, Rest), URI) ->
+    {T, URI1} = parse_fragment(Rest, URI),  % path-empty
+    Fragment = calculate_parsed_query_fragment(Rest, T),
+    URI2 = maybe_add_path(URI1),
+    URI2#{fragment => decode_fragment(Fragment)};
+parse_relative_part(?STRING_REST(Char, Rest), URI) ->
+    case is_segment_nz_nc(Char) of
+        true ->
+            {T, URI1} = parse_segment_nz_nc(Rest, URI),  % path-noscheme
+            Path = calculate_parsed_part(Rest, T),
+            URI1#{path => decode_path(?STRING_REST(Char, Path))};
+        false -> throw({error,invalid_uri,[Char]})
+    end.
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 3.3. Path]
+%%
+%% The path component contains data, usually organized in hierarchical
+%% form, that, along with data in the non-hierarchical query component
+%% (Section 3.4), serves to identify a resource within the scope of the
+%% URI's scheme and naming authority (if any).  The path is terminated
+%% by the first question mark ("?") or number sign ("#") character, or
+%% by the end of the URI.
+%%
+%%    path          = path-abempty    ; begins with "/" or is empty
+%%                  / path-absolute   ; begins with "/" but not "//"
+%%                  / path-noscheme   ; begins with a non-colon segment
+%%                  / path-rootless   ; begins with a segment
+%%                  / path-empty      ; zero characters
+%%
+%%    path-abempty  = *( "/" segment )
+%%    path-absolute = "/" [ segment-nz *( "/" segment ) ]
+%%    path-noscheme = segment-nz-nc *( "/" segment )
+%%    path-rootless = segment-nz *( "/" segment )
+%%    path-empty    = 0<pchar>
+%%    segment       = *pchar
+%%    segment-nz    = 1*pchar
+%%    segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" )
+%%                  ; non-zero-length segment without any colon ":"
+%%
+%%    pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
+%%-------------------------------------------------------------------------
+
+%%-------------------------------------------------------------------------
+%%    path-abempty
+%%-------------------------------------------------------------------------
+-spec parse_segment(binary(), uri_map()) -> {binary(), uri_map()}.
+parse_segment(?STRING_REST($/, Rest), URI) ->
+    parse_segment(Rest, URI);  % segment
+parse_segment(?STRING_REST($?, Rest), URI) ->
+    {T, URI1} = parse_query(Rest, URI),  % ?query
+    Query = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{query => decode_query(Query)}};
+parse_segment(?STRING_REST($#, Rest), URI) ->
+    {T, URI1} = parse_fragment(Rest, URI),
+    Fragment = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{fragment => decode_fragment(Fragment)}};
+parse_segment(?STRING_REST(Char, Rest), URI) ->
+    case is_pchar(Char) of
+        true -> parse_segment(Rest, URI);
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_segment(?STRING_EMPTY, URI) ->
+    {?STRING_EMPTY, URI}.
+
+
+%%-------------------------------------------------------------------------
+%%    path-noscheme
+%%-------------------------------------------------------------------------
+-spec parse_segment_nz_nc(binary(), uri_map()) -> {binary(), uri_map()}.
+parse_segment_nz_nc(?STRING_REST($/, Rest), URI) ->
+    parse_segment(Rest, URI);  % segment
+parse_segment_nz_nc(?STRING_REST($?, Rest), URI) ->
+    {T, URI1} = parse_query(Rest, URI),  % ?query
+    Query = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{query => decode_query(Query)}};
+parse_segment_nz_nc(?STRING_REST($#, Rest), URI) ->
+    {T, URI1} = parse_fragment(Rest, URI),
+    Fragment = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{fragment => decode_fragment(Fragment)}};
+parse_segment_nz_nc(?STRING_REST(Char, Rest), URI) ->
+    case is_segment_nz_nc(Char) of
+        true -> parse_segment_nz_nc(Rest, URI);
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_segment_nz_nc(?STRING_EMPTY, URI) ->
+    {?STRING_EMPTY, URI}.
+
+
+%% Check if char is pchar.
+-spec is_pchar(char()) -> boolean().
+is_pchar($%) -> true;  % pct-encoded
+is_pchar($:) -> true;
+is_pchar($@) -> true;
+is_pchar(Char) -> is_unreserved(Char) orelse is_sub_delim(Char).
+
+%% Check if char is segment_nz_nc.
+-spec is_segment_nz_nc(char()) -> boolean().
+is_segment_nz_nc($%) -> true;  % pct-encoded
+is_segment_nz_nc($@) -> true;
+is_segment_nz_nc(Char) -> is_unreserved(Char) orelse is_sub_delim(Char).
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 3.1. Scheme]
+%%
+%% Each URI begins with a scheme name that refers to a specification for
+%% assigning identifiers within that scheme.
+%%
+%%    scheme      = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
+%%-------------------------------------------------------------------------
+-spec parse_scheme_start(binary(), uri_map()) -> uri_map().
+parse_scheme_start(?STRING_REST(Char, Rest), URI) ->
+    case is_alpha(Char) of
+        true  -> {T, URI1} = parse_scheme(Rest, URI),
+                 Scheme = calculate_parsed_scheme(Rest, T),
+                 URI2 = maybe_add_path(URI1),
+		 URI2#{scheme => ?STRING_REST(Char, Scheme)};
+        false -> throw({error,invalid_uri,[Char]})
+    end.
+
+%% Add path component if it missing after parsing the URI.
+%% According to the URI specification there is always a
+%% path component in every URI-reference and it can be
+%% empty.
+maybe_add_path(Map) ->
+    case maps:is_key(path, Map) of
+        false ->
+            Map#{path => <<>>};
+        _Else ->
+            Map
+    end.
+
+
+
+-spec parse_scheme(binary(), uri_map()) -> {binary(), uri_map()}.
+parse_scheme(?STRING_REST($:, Rest), URI) ->
+    {_, URI1} = parse_hier(Rest, URI),
+    {Rest, URI1};
+parse_scheme(?STRING_REST(Char, Rest), URI) ->
+    case is_scheme(Char) of
+        true  -> parse_scheme(Rest, URI);
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_scheme(?STRING_EMPTY, _URI) ->
+    throw({error,invalid_uri,<<>>}).
+
+
+%% Check if char is allowed in scheme
+-spec is_scheme(char()) -> boolean().
+is_scheme($+) -> true;
+is_scheme($-) -> true;
+is_scheme($.) -> true;
+is_scheme(Char) -> is_alpha(Char) orelse is_digit(Char).
+
+
+%%-------------------------------------------------------------------------
+%%    hier-part   = "//" authority path-abempty
+%%                   / path-absolute
+%%                   / path-rootless
+%%                   / path-empty
+%%-------------------------------------------------------------------------
+-spec parse_hier(binary(), uri_map()) -> {binary(), uri_map()}.
+parse_hier(?STRING_REST("//", Rest), URI) ->
+    % Parse userinfo - "//" is NOT part of authority
+    try parse_userinfo(Rest, URI) of
+        {T, URI1} ->
+            Userinfo = calculate_parsed_userinfo(Rest, T),
+	    {Rest, URI1#{userinfo => decode_userinfo(Userinfo)}}
+    catch
+        throw:{_,_,_} ->
+            {T, URI1} = parse_host(Rest, URI),
+            Host = calculate_parsed_host_port(Rest, T),
+	    {Rest, URI1#{host => decode_host(remove_brackets(Host))}}
+    end;
+parse_hier(?STRING_REST($/, Rest), URI) ->
+    {T, URI1} = parse_segment(Rest, URI),  % path-absolute
+    Path = calculate_parsed_part(Rest, T),
+    {Rest, URI1#{path => decode_path(?STRING_REST($/, Path))}};
+parse_hier(?STRING_REST($?, Rest), URI) ->
+    {T, URI1} = parse_query(Rest, URI),  % path-empty ?query
+    Query = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{query => decode_query(Query)}};
+parse_hier(?STRING_REST($#, Rest), URI) ->
+    {T, URI1} = parse_fragment(Rest, URI),  % path-empty
+    Fragment = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{fragment => decode_fragment(Fragment)}};
+parse_hier(?STRING_REST(Char, Rest), URI) ->  % path-rootless
+    case is_pchar(Char) of
+        true ->  % segment_nz
+            {T, URI1} = parse_segment(Rest, URI),
+            Path = calculate_parsed_part(Rest, T),
+            {Rest, URI1#{path => decode_path(?STRING_REST(Char, Path))}};
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_hier(?STRING_EMPTY, URI) ->
+    {<<>>, URI}.
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 3.2. Authority]
+%%
+%% Many URI schemes include a hierarchical element for a naming
+%% authority so that governance of the name space defined by the
+%% remainder of the URI is delegated to that authority (which may, in
+%% turn, delegate it further).
+%%
+%% The authority component is preceded by a double slash ("//") and is
+%% terminated by the next slash ("/"), question mark ("?"), or number
+%% sign ("#") character, or by the end of the URI.
+%%
+%%    authority   = [ userinfo "@" ] host [ ":" port ]
+%%
+%%
+%% [RFC 3986, Chapter 3.2.1. User Information]
+%%
+%% The userinfo subcomponent may consist of a user name and, optionally,
+%% scheme-specific information about how to gain authorization to access
+%% the resource. The user information, if present, is followed by a
+%% commercial at-sign ("@") that delimits it from the host.
+%%
+%%    userinfo    = *( unreserved / pct-encoded / sub-delims / ":" )
+%%-------------------------------------------------------------------------
+-spec parse_userinfo(binary(), uri_map()) -> {binary(), uri_map()}.
+parse_userinfo(?CHAR($@), URI) ->
+    {?STRING_EMPTY, URI#{host => <<>>}};
+parse_userinfo(?STRING_REST($@, Rest), URI) ->
+    {T, URI1} = parse_host(Rest, URI),
+    Host = calculate_parsed_host_port(Rest, T),
+    {Rest, URI1#{host => decode_host(remove_brackets(Host))}};
+parse_userinfo(?STRING_REST(Char, Rest), URI) ->
+    case is_userinfo(Char) of
+        true -> parse_userinfo(Rest, URI);
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_userinfo(?STRING_EMPTY, _URI) ->
+    %% URI cannot end in userinfo state
+    throw({error,invalid_uri,<<>>}).
+
+
+%% Check if char is allowed in userinfo
+-spec is_userinfo(char()) -> boolean().
+is_userinfo($%) -> true;  % pct-encoded
+is_userinfo($:) -> true;
+is_userinfo(Char) -> is_unreserved(Char) orelse is_sub_delim(Char).
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 3.2.2. Host]
+%%
+%% The host subcomponent of authority is identified by an IP literal
+%% encapsulated within square brackets, an IPv4 address in dotted-
+%% decimal form, or a registered name.
+%%
+%%    host        = IP-literal / IPv4address / reg-name
+%%
+%%    IP-literal = "[" ( IPv6address / IPvFuture  ) "]"
+%%
+%%    IPvFuture  = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
+%%
+%%    IPv6address =                            6( h16 ":" ) ls32
+%%                /                       "::" 5( h16 ":" ) ls32
+%%                / [               h16 ] "::" 4( h16 ":" ) ls32
+%%                / [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
+%%                / [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
+%%                / [ *3( h16 ":" ) h16 ] "::"    h16 ":"   ls32
+%%                / [ *4( h16 ":" ) h16 ] "::"              ls32
+%%                / [ *5( h16 ":" ) h16 ] "::"              h16
+%%                / [ *6( h16 ":" ) h16 ] "::"
+%%
+%%    ls32        = ( h16 ":" h16 ) / IPv4address
+%%                ; least-significant 32 bits of address
+%%
+%%    h16         = 1*4HEXDIG
+%%                ; 16 bits of address represented in hexadecimal
+%%
+%%    IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
+%%
+%%    dec-octet   = DIGIT                 ; 0-9
+%%                / %x31-39 DIGIT         ; 10-99
+%%                / "1" 2DIGIT            ; 100-199
+%%                / "2" %x30-34 DIGIT     ; 200-249
+%%                / "25" %x30-35          ; 250-255
+%%
+%%    reg-name    = *( unreserved / pct-encoded / sub-delims )
+%%-------------------------------------------------------------------------
+-spec parse_host(binary(), uri_map()) -> {binary(), uri_map()}.
+parse_host(?STRING_REST($:, Rest), URI) ->
+    {T, URI1} = parse_port(Rest, URI),
+    H = calculate_parsed_host_port(Rest, T),
+    Port = get_port(H),
+    {Rest, URI1#{port => Port}};
+parse_host(?STRING_REST($/, Rest), URI) ->
+    {T, URI1} = parse_segment(Rest, URI),  % path-abempty
+    Path = calculate_parsed_part(Rest, T),
+    {Rest, URI1#{path => decode_path(?STRING_REST($/, Path))}};
+parse_host(?STRING_REST($?, Rest), URI) ->
+    {T, URI1} = parse_query(Rest, URI),  % path-empty ?query
+    Query = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{query => decode_query(Query)}};
+parse_host(?STRING_REST($[, Rest), URI) ->
+    parse_ipv6_bin(Rest, [], URI);
+parse_host(?STRING_REST($#, Rest), URI) ->
+    {T, URI1} = parse_fragment(Rest, URI),  % path-empty
+    Fragment = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{fragment => decode_fragment(Fragment)}};
+parse_host(?STRING_REST(Char, Rest), URI) ->
+    case is_digit(Char) of
+        true -> parse_ipv4_bin(Rest, [Char], URI);
+        false -> parse_reg_name(?STRING_REST(Char, Rest), URI)
+    end;
+parse_host(?STRING_EMPTY, URI) ->
+    {?STRING_EMPTY, URI}.
+
+
+-spec parse_reg_name(binary(), uri_map()) -> {binary(), uri_map()}.
+parse_reg_name(?STRING_REST($:, Rest), URI) ->
+    {T, URI1} = parse_port(Rest, URI),
+    H = calculate_parsed_host_port(Rest, T),
+    Port = get_port(H),
+    {Rest, URI1#{port => Port}};
+parse_reg_name(?STRING_REST($/, Rest), URI) ->
+    {T, URI1} = parse_segment(Rest, URI),  % path-abempty
+    Path = calculate_parsed_part(Rest, T),
+    {Rest, URI1#{path => decode_path(?STRING_REST($/, Path))}};
+parse_reg_name(?STRING_REST($?, Rest), URI) ->
+    {T, URI1} = parse_query(Rest, URI),  % path-empty ?query
+    Query = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{query => decode_query(Query)}};
+parse_reg_name(?STRING_REST($#, Rest), URI) ->
+    {T, URI1} = parse_fragment(Rest, URI),  % path-empty
+    Fragment = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{fragment => decode_fragment(Fragment)}};
+parse_reg_name(?STRING_REST(Char, Rest), URI) ->
+    case is_reg_name(Char) of
+        true -> parse_reg_name(Rest, URI);
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_reg_name(?STRING_EMPTY, URI) ->
+    {?STRING_EMPTY, URI}.
+
+%% Check if char is allowed in reg-name
+-spec is_reg_name(char()) -> boolean().
+is_reg_name($%) -> true;
+is_reg_name(Char) -> is_unreserved(Char) orelse is_sub_delim(Char).
+
+
+-spec parse_ipv4_bin(binary(), list(), uri_map()) -> {binary(), uri_map()}.
+parse_ipv4_bin(?STRING_REST($:, Rest), Acc, URI) ->
+    _ = validate_ipv4_address(lists:reverse(Acc)),
+    {T, URI1} = parse_port(Rest, URI),
+    H = calculate_parsed_host_port(Rest, T),
+    Port = get_port(H),
+    {Rest, URI1#{port => Port}};
+parse_ipv4_bin(?STRING_REST($/, Rest), Acc, URI) ->
+    _ = validate_ipv4_address(lists:reverse(Acc)),
+    {T, URI1} = parse_segment(Rest, URI),  % path-abempty
+    Path = calculate_parsed_part(Rest, T),
+    {Rest, URI1#{path => decode_path(?STRING_REST($/, Path))}};
+parse_ipv4_bin(?STRING_REST($?, Rest), Acc, URI) ->
+    _ = validate_ipv4_address(lists:reverse(Acc)),
+    {T, URI1} = parse_query(Rest, URI),  % path-empty ?query
+    Query = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{query => decode_query(Query)}};
+parse_ipv4_bin(?STRING_REST($#, Rest), Acc, URI) ->
+    _ = validate_ipv4_address(lists:reverse(Acc)),
+    {T, URI1} = parse_fragment(Rest, URI),  % path-empty
+    Fragment = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{fragment => decode_fragment(Fragment)}};
+parse_ipv4_bin(?STRING_REST(Char, Rest), Acc, URI) ->
+    case is_ipv4(Char) of
+        true -> parse_ipv4_bin(Rest, [Char|Acc], URI);
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_ipv4_bin(?STRING_EMPTY, Acc, URI) ->
+    _ = validate_ipv4_address(lists:reverse(Acc)),
+    {?STRING_EMPTY, URI}.
+
+
+%% Check if char is allowed in IPv4 addresses
+-spec is_ipv4(char()) -> boolean().
+is_ipv4($.) -> true;
+is_ipv4(Char) -> is_digit(Char).
+
+-spec validate_ipv4_address(list()) -> list().
+validate_ipv4_address(Addr) ->
+    case inet:parse_ipv4strict_address(Addr) of
+        {ok, _} -> Addr;
+        {error, _} -> throw({error,invalid_uri,Addr})
+    end.
+
+
+-spec parse_ipv6_bin(binary(), list(), uri_map()) -> {binary(), uri_map()}.
+parse_ipv6_bin(?STRING_REST($], Rest), Acc, URI) ->
+    _ = validate_ipv6_address(lists:reverse(Acc)),
+    parse_ipv6_bin_end(Rest, URI);
+parse_ipv6_bin(?STRING_REST(Char, Rest), Acc, URI) ->
+    case is_ipv6(Char) of
+        true -> parse_ipv6_bin(Rest, [Char|Acc], URI);
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_ipv6_bin(?STRING_EMPTY, _Acc, _URI) ->
+    throw({error,invalid_uri,<<>>}).
+
+%% Check if char is allowed in IPv6 addresses
+-spec is_ipv6(char()) -> boolean().
+is_ipv6($:) -> true;
+is_ipv6($.) -> true;
+is_ipv6(Char) -> is_hex_digit(Char).
+
+
+-spec parse_ipv6_bin_end(binary(), uri_map()) -> {binary(), uri_map()}.
+parse_ipv6_bin_end(?STRING_REST($:, Rest), URI) ->
+    {T, URI1} = parse_port(Rest, URI),
+    H = calculate_parsed_host_port(Rest, T),
+    Port = get_port(H),
+    {Rest, URI1#{port => Port}};
+parse_ipv6_bin_end(?STRING_REST($/, Rest), URI) ->
+    {T, URI1} = parse_segment(Rest, URI),  % path-abempty
+    Path = calculate_parsed_part(Rest, T),
+    {Rest, URI1#{path => decode_path(?STRING_REST($/, Path))}};
+parse_ipv6_bin_end(?STRING_REST($?, Rest), URI) ->
+    {T, URI1} = parse_query(Rest, URI),  % path-empty ?query
+    Query = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{query => decode_query(Query)}};
+parse_ipv6_bin_end(?STRING_REST($#, Rest), URI) ->
+    {T, URI1} = parse_fragment(Rest, URI),  % path-empty
+    Fragment = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{fragment => decode_fragment(Fragment)}};
+parse_ipv6_bin_end(?STRING_REST(Char, Rest), URI) ->
+    case is_ipv6(Char) of
+        true -> parse_ipv6_bin_end(Rest, URI);
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_ipv6_bin_end(?STRING_EMPTY, URI) ->
+    {?STRING_EMPTY, URI}.
+
+-spec validate_ipv6_address(list()) -> list().
+validate_ipv6_address(Addr) ->
+    case inet:parse_ipv6strict_address(Addr) of
+        {ok, _} -> Addr;
+        {error, _} -> throw({error,invalid_uri,Addr})
+    end.
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 3.2.2. Port]
+%%
+%% The port subcomponent of authority is designated by an optional port
+%% number in decimal following the host and delimited from it by a
+%% single colon (":") character.
+%%
+%%    port        = *DIGIT
+%%-------------------------------------------------------------------------
+-spec parse_port(binary(), uri_map()) -> {binary(), uri_map()}.
+parse_port(?STRING_REST($/, Rest), URI) ->
+    {T, URI1} = parse_segment(Rest, URI),  % path-abempty
+    Path = calculate_parsed_part(Rest, T),
+    {Rest, URI1#{path => decode_path(?STRING_REST($/, Path))}};
+parse_port(?STRING_REST($?, Rest), URI) ->
+    {T, URI1} = parse_query(Rest, URI),  % path-empty ?query
+    Query = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{query => decode_query(Query)}};
+parse_port(?STRING_REST($#, Rest), URI) ->
+    {T, URI1} = parse_fragment(Rest, URI),  % path-empty
+    Fragment = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{fragment => decode_fragment(Fragment)}};
+parse_port(?STRING_REST(Char, Rest), URI) ->
+    case is_digit(Char) of
+        true -> parse_port(Rest, URI);
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_port(?STRING_EMPTY, URI) ->
+    {?STRING_EMPTY, URI}.
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 3.4. Query]
+%%
+%% The query component contains non-hierarchical data that, along with
+%% data in the path component (Section 3.3), serves to identify a
+%% resource within the scope of the URI's scheme and naming authority
+%% (if any).  The query component is indicated by the first question
+%% mark ("?") character and terminated by a number sign ("#") character
+%% or by the end of the URI.
+%%
+%%    query       = *( pchar / "/" / "?" )
+%%-------------------------------------------------------------------------
+-spec parse_query(binary(), uri_map()) -> {binary(), uri_map()}.
+parse_query(?STRING_REST($#, Rest), URI) ->
+    {T, URI1} = parse_fragment(Rest, URI),
+    Fragment = calculate_parsed_query_fragment(Rest, T),
+    {Rest, URI1#{fragment => decode_fragment(Fragment)}};
+parse_query(?STRING_REST(Char, Rest), URI) ->
+    case is_query(Char) of
+        true -> parse_query(Rest, URI);
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_query(?STRING_EMPTY, URI) ->
+    {?STRING_EMPTY, URI}.
+
+
+%% Check if char is allowed in query
+-spec is_query(char()) -> boolean().
+is_query($/) -> true;
+is_query($?) -> true;
+is_query(Char) -> is_pchar(Char).
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 3.5. Fragment]
+%%
+%% The fragment identifier component of a URI allows indirect
+%% identification of a secondary resource by reference to a primary
+%% resource and additional identifying information.
+%%
+%%    fragment    = *( pchar / "/" / "?" )
+%%-------------------------------------------------------------------------
+-spec parse_fragment(binary(), uri_map()) -> {binary(), uri_map()}.
+parse_fragment(?STRING_REST(Char, Rest), URI) ->
+    case is_fragment(Char) of
+        true -> parse_fragment(Rest, URI);
+        false -> throw({error,invalid_uri,[Char]})
+    end;
+parse_fragment(?STRING_EMPTY, URI) ->
+    {?STRING_EMPTY, URI}.
+
+
+%% Check if char is allowed in fragment
+-spec is_fragment(char()) -> boolean().
+is_fragment($/) -> true;
+is_fragment($?) -> true;
+is_fragment(Char) -> is_pchar(Char).
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 2.2. Reserved Characters]
+%%
+%%   reserved    = gen-delims / sub-delims
+%%
+%%   gen-delims  = ":" / "/" / "?" / "#" / "[" / "]" / "@"
+%%
+%%   sub-delims  = "!" / "$" / "&" / "'" / "(" / ")"
+%%               / "*" / "+" / "," / ";" / "="
+%%
+%%-------------------------------------------------------------------------
+
+%% Check if char is sub-delim.
+-spec is_sub_delim(char()) -> boolean().
+is_sub_delim($!) -> true;
+is_sub_delim($$) -> true;
+is_sub_delim($&) -> true;
+is_sub_delim($') -> true;
+is_sub_delim($() -> true;
+is_sub_delim($)) -> true;
+
+is_sub_delim($*) -> true;
+is_sub_delim($+) -> true;
+is_sub_delim($,) -> true;
+is_sub_delim($;) -> true;
+is_sub_delim($=) -> true;
+is_sub_delim(_) -> false.
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 2.3. Unreserved Characters]
+%%
+%%   unreserved  = ALPHA / DIGIT / "-" / "." / "_" / "~"
+%%
+%%-------------------------------------------------------------------------
+-spec is_unreserved(char()) -> boolean().
+is_unreserved($-) -> true;
+is_unreserved($.) -> true;
+is_unreserved($_) -> true;
+is_unreserved($~) -> true;
+is_unreserved(Char) -> is_alpha(Char) orelse is_digit(Char).
+
+-spec is_alpha(char()) -> boolean().
+is_alpha(C)
+  when $A =< C, C =< $Z;
+       $a =< C, C =< $z -> true;
+is_alpha(_) -> false.
+
+-spec is_digit(char()) -> boolean().
+is_digit(C)
+  when $0 =< C, C =< $9 -> true;
+is_digit(_) -> false.
+
+-spec is_hex_digit(char()) -> boolean().
+is_hex_digit(C)
+  when $0 =< C, C =< $9;$a =< C, C =< $f;$A =< C, C =< $F -> true;
+is_hex_digit(_) -> false.
+
+
+%% Remove enclosing brackets from binary
+-spec remove_brackets(binary()) -> binary().
+remove_brackets(<<$[/utf8, Rest/binary>>) ->
+    {H,T} = split_binary(Rest, byte_size(Rest) - 1),
+    case T =:= <<$]/utf8>> of
+        true -> H;
+        false -> Rest
+    end;
+remove_brackets(Addr) -> Addr.
+
+
+%%-------------------------------------------------------------------------
+%% Helper functions for calculating the parsed binary.
+%%-------------------------------------------------------------------------
+-spec calculate_parsed_scheme(binary(), binary()) -> binary().
+calculate_parsed_scheme(Input, <<>>) ->
+    strip_last_char(Input, [$:]);
+calculate_parsed_scheme(Input, Unparsed) ->
+    get_parsed_binary(Input, Unparsed).
+
+
+-spec calculate_parsed_part(binary(), binary()) -> binary().
+calculate_parsed_part(Input, <<>>) ->
+    strip_last_char(Input, [$?,$#]);
+calculate_parsed_part(Input, Unparsed) ->
+    get_parsed_binary(Input, Unparsed).
+
+
+-spec calculate_parsed_userinfo(binary(), binary()) -> binary().
+calculate_parsed_userinfo(Input, <<>>) ->
+    strip_last_char(Input, [$?,$#,$@]);
+calculate_parsed_userinfo(Input, Unparsed) ->
+    get_parsed_binary(Input, Unparsed).
+
+
+-spec calculate_parsed_host_port(binary(), binary()) -> binary().
+calculate_parsed_host_port(Input, <<>>) ->
+    strip_last_char(Input, [$:,$?,$#,$/]);
+calculate_parsed_host_port(Input, Unparsed) ->
+    get_parsed_binary(Input, Unparsed).
+
+
+calculate_parsed_query_fragment(Input, <<>>) ->
+    strip_last_char(Input, [$#]);
+calculate_parsed_query_fragment(Input, Unparsed) ->
+    get_parsed_binary(Input, Unparsed).
+
+
+get_port(<<>>) ->
+    undefined;
+get_port(B) ->
+    try binary_to_integer(B)
+    catch
+        error:badarg ->
+            throw({error, invalid_uri, B})
+    end.
+
+
+%% Strip last char if it is in list
+%%
+%% This function is optimized for speed: parse/1 is about 10% faster than
+%% with an alternative implementation based on lists and sets.
+strip_last_char(<<>>, _) -> <<>>;
+strip_last_char(Input, [C0]) ->
+    case binary:last(Input) of
+        C0 ->
+            init_binary(Input);
+        _Else ->
+            Input
+    end;
+strip_last_char(Input, [C0,C1]) ->
+    case binary:last(Input) of
+        C0 ->
+            init_binary(Input);
+        C1 ->
+            init_binary(Input);
+        _Else ->
+            Input
+    end;
+strip_last_char(Input, [C0,C1,C2]) ->
+    case binary:last(Input) of
+        C0 ->
+            init_binary(Input);
+        C1 ->
+            init_binary(Input);
+        C2 ->
+            init_binary(Input);
+        _Else ->
+            Input
+    end;
+strip_last_char(Input, [C0,C1,C2,C3]) ->
+    case binary:last(Input) of
+        C0 ->
+            init_binary(Input);
+        C1 ->
+            init_binary(Input);
+        C2 ->
+            init_binary(Input);
+        C3 ->
+            init_binary(Input);
+        _Else ->
+            Input
+    end.
+
+
+%% Get parsed binary
+get_parsed_binary(Input, Unparsed) ->
+    {First, _} = split_binary(Input, byte_size(Input) - byte_size_exl_head(Unparsed)),
+    First.
+
+
+%% Return all bytes of the binary except the last one. The binary must be non-empty.
+init_binary(B) ->
+    {Init, _} =
+        split_binary(B, byte_size(B) - 1),
+    Init.
+
+
+%% Returns the size of a binary exluding the first element.
+%% Used in calls to split_binary().
+-spec byte_size_exl_head(binary()) -> number().
+byte_size_exl_head(<<>>) -> 0;
+byte_size_exl_head(Binary) -> byte_size(Binary) + 1.
+
+
+%%-------------------------------------------------------------------------
+%% [RFC 3986, Chapter 2.1.  Percent-Encoding]
+%%
+%% A percent-encoding mechanism is used to represent a data octet in a
+%% component when that octet's corresponding character is outside the
+%% allowed set or is being used as a delimiter of, or within, the
+%% component.  A percent-encoded octet is encoded as a character
+%% triplet, consisting of the percent character "%" followed by the two
+%% hexadecimal digits representing that octet's numeric value.  For
+%% example, "%20" is the percent-encoding for the binary octet
+%% "00100000" (ABNF: %x20), which in US-ASCII corresponds to the space
+%% character (SP).  Section 2.4 describes when percent-encoding and
+%% decoding is applied.
+%%
+%%   pct-encoded = "%" HEXDIG HEXDIG
+%%-------------------------------------------------------------------------
+-spec decode_userinfo(binary()) -> binary().
+decode_userinfo(Cs) ->
+    check_utf8(decode(Cs, fun is_userinfo/1, <<>>)).
+
+-spec decode_host(binary()) -> binary().
+decode_host(Cs) ->
+    check_utf8(decode(Cs, fun is_host/1, <<>>)).
+
+-spec decode_path(binary()) -> binary().
+decode_path(Cs) ->
+    check_utf8(decode(Cs, fun is_path/1, <<>>)).
+
+-spec decode_query(binary()) -> binary().
+decode_query(Cs) ->
+    check_utf8(decode(Cs, fun is_query/1, <<>>)).
+
+-spec decode_fragment(binary()) -> binary().
+decode_fragment(Cs) ->
+    check_utf8(decode(Cs, fun is_fragment/1, <<>>)).
+
+
+%% Returns Cs if it is utf8 encoded.
+check_utf8(Cs) ->
+    case unicode:characters_to_list(Cs) of
+        {incomplete,_,_} ->
+            throw({error,invalid_utf8,Cs});
+        {error,_,_} ->
+            throw({error,invalid_utf8,Cs});
+        _ -> Cs
+    end.
+
+%%-------------------------------------------------------------------------
+%% Percent-encode
+%%-------------------------------------------------------------------------
+
+%% Only validates as scheme cannot have percent-encoded characters
+-spec encode_scheme(list()|binary()) -> list() | binary().
+encode_scheme([]) ->
+    throw({error,invalid_scheme,""});
+encode_scheme(<<>>) ->
+    throw({error,invalid_scheme,<<>>});
+encode_scheme(Scheme) ->
+    case validate_scheme(Scheme) of
+        true -> Scheme;
+        false -> throw({error,invalid_scheme,Scheme})
+    end.
+
+-spec encode_userinfo(list()|binary()) -> list() | binary().
+encode_userinfo(Cs) ->
+    encode(Cs, fun is_userinfo/1).
+
+-spec encode_host(list()|binary()) -> list() | binary().
+encode_host(Cs) ->
+    case classify_host(Cs) of
+        regname -> Cs;
+        ipv4 -> Cs;
+        ipv6 -> bracket_ipv6(Cs);
+        other -> encode(Cs, fun is_reg_name/1)
+    end.
+
+-spec encode_path(list()|binary()) -> list() | binary().
+encode_path(Cs) ->
+    encode(Cs, fun is_path/1).
+
+-spec encode_query(list()|binary()) -> list() | binary().
+encode_query(Cs) ->
+    encode(Cs, fun is_query/1).
+
+-spec encode_fragment(list()|binary()) -> list() | binary().
+encode_fragment(Cs) ->
+    encode(Cs, fun is_fragment/1).
+
+%%-------------------------------------------------------------------------
+%% Helper funtions for percent-decode
+%%-------------------------------------------------------------------------
+decode(<<$%,C0,C1,Cs/binary>>, Fun, Acc) ->
+    case is_hex_digit(C0) andalso is_hex_digit(C1) of
+        true ->
+            B = ?HEX2DEC(C0)*16+?HEX2DEC(C1),
+            decode(Cs, Fun, <<Acc/binary, B>>);
+        false -> throw({error,invalid_percent_encoding,<<$%,C0,C1>>})
+    end;
+decode(<<C,Cs/binary>>, Fun, Acc) ->
+    case Fun(C) of
+        true -> decode(Cs, Fun, <<Acc/binary, C>>);
+        false -> throw({error,invalid_percent_encoding,<<C,Cs/binary>>})
+    end;
+decode(<<>>, _Fun, Acc) ->
+    Acc.
+
+%% Check if char is allowed in host
+-spec is_host(char()) -> boolean().
+is_host($:) -> true;
+is_host(Char) -> is_unreserved(Char) orelse is_sub_delim(Char).
+
+%% Check if char is allowed in path
+-spec is_path(char()) -> boolean().
+is_path($/) -> true;
+is_path(Char) -> is_pchar(Char).
+
+
+%%-------------------------------------------------------------------------
+%% Helper functions for percent-encode
+%%-------------------------------------------------------------------------
+-spec encode(list()|binary(), fun()) -> list() | binary().
+encode(Component, Fun) when is_list(Component) ->
+    B = unicode:characters_to_binary(Component),
+    unicode:characters_to_list(encode(B, Fun, <<>>));
+encode(Component, Fun) when is_binary(Component) ->
+    encode(Component, Fun, <<>>).
+%%
+encode(<<Char/utf8, Rest/binary>>, Fun, Acc) ->
+    C = encode_codepoint_binary(Char, Fun),
+    encode(Rest, Fun, <<Acc/binary,C/binary>>);
+encode(<<Char, Rest/binary>>, _Fun, _Acc) ->
+    throw({error,invalid_input,<<Char,Rest/binary>>});
+encode(<<>>, _Fun, Acc) ->
+    Acc.
+
+
+-spec encode_codepoint_binary(integer(), fun()) -> binary().
+encode_codepoint_binary(C, Fun) ->
+    case Fun(C) of
+        false -> percent_encode_binary(C);
+        true -> <<C>>
+    end.
+
+
+-spec percent_encode_binary(integer()) -> binary().
+percent_encode_binary(Code) ->
+    percent_encode_binary(<<Code/utf8>>, <<>>).
+
+
+percent_encode_binary(<<A:4,B:4,Rest/binary>>, Acc) ->
+    percent_encode_binary(Rest, <<Acc/binary,$%,(?DEC2HEX(A)),(?DEC2HEX(B))>>);
+percent_encode_binary(<<>>, Acc) ->
+    Acc.
+
+
+%%-------------------------------------------------------------------------
+%%-------------------------------------------------------------------------
+validate_scheme([]) -> true;
+validate_scheme([H|T]) ->
+    case is_scheme(H) of
+        true -> validate_scheme(T);
+        false -> false
+    end;
+validate_scheme(<<>>) -> true;
+validate_scheme(<<H, Rest/binary>>) ->
+    case is_scheme(H) of
+        true -> validate_scheme(Rest);
+        false -> false
+    end.
+
+
+%%-------------------------------------------------------------------------
+%% Classifies hostname into the following categories:
+%% regname, ipv4 - address does not contain reserved characters to be
+%%           percent-encoded
+%% ipv6 - address does not contain reserved characters but it shall be
+%%        encolsed in brackets
+%% other - address shall be percent-encoded
+%%-------------------------------------------------------------------------
+classify_host([]) -> other;
+classify_host(Addr) when is_binary(Addr) ->
+    A = unicode:characters_to_list(Addr),
+    classify_host_ipv6(A);
+classify_host(Addr) ->
+    classify_host_ipv6(Addr).
+
+classify_host_ipv6(Addr) ->
+    case is_ipv6_address(Addr) of
+        true -> ipv6;
+        false -> classify_host_ipv4(Addr)
+    end.
+
+classify_host_ipv4(Addr) ->
+    case is_ipv4_address(Addr) of
+        true -> ipv4;
+        false -> classify_host_regname(Addr)
+    end.
+
+classify_host_regname([]) -> regname;
+classify_host_regname([H|T]) ->
+    case is_reg_name(H) of
+        true -> classify_host_regname(T);
+        false -> other
+    end.
+
+is_ipv4_address(Addr) ->
+    case inet:parse_ipv4strict_address(Addr) of
+        {ok, _} -> true;
+        {error, _} -> false
+    end.
+
+is_ipv6_address(Addr) ->
+    case inet:parse_ipv6strict_address(Addr) of
+        {ok, _} -> true;
+        {error, _} -> false
+    end.
+
+bracket_ipv6(Addr) when is_binary(Addr) ->
+    concat(<<$[,Addr/binary>>,<<$]>>);
+bracket_ipv6(Addr) when is_list(Addr) ->
+    [$[|Addr] ++ "]".
+
+
+%%-------------------------------------------------------------------------
+%% Helper funtions for recompose
+%%-------------------------------------------------------------------------
+
+%%-------------------------------------------------------------------------
+%% Checks if input Map has valid combination of fields that can be
+%% recomposed into a URI.
+%%
+%% The implementation is based on a decision tree that fulfills the
+%% following rules:
+%%   - 'path' shall always be present in the input map
+%%       URI         = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
+%%       hier-part   = "//" authority path-abempty
+%%                      / path-absolute
+%%                      / path-rootless
+%%                      / path-empty
+%%   - 'host' shall be present in the input map when 'path' starts with
+%%     two slashes ("//")
+%%       path          = path-abempty    ; begins with "/" or is empty
+%%                     / path-absolute   ; begins with "/" but not "//"
+%%                     / path-noscheme   ; begins with a non-colon segment
+%%                     / path-rootless   ; begins with a segment
+%%                     / path-empty      ; zero characters
+%%       path-abempty  = *( "/" segment )
+%%       segment       = *pchar
+%%   - 'host' shall be present if userinfo or port is present in input map
+%%       authority   = [ userinfo "@" ] host [ ":" port ]
+%%   - All fields shall be valid (scheme, userinfo, host, port, path, query
+%%     or fragment).
+%%-------------------------------------------------------------------------
+is_valid_map(#{path := Path} = Map) ->
+    ((starts_with_two_slash(Path) andalso is_valid_map_host(Map))
+     orelse
+       (maps:is_key(userinfo, Map) andalso is_valid_map_host(Map))
+     orelse
+       (maps:is_key(port, Map) andalso is_valid_map_host(Map))
+     orelse
+     all_fields_valid(Map));
+is_valid_map(#{}) ->
+    false.
+
+
+is_valid_map_host(Map) ->
+    maps:is_key(host, Map) andalso all_fields_valid(Map).
+
+
+all_fields_valid(Map) ->
+    Fun = fun(scheme, _, Acc) -> Acc;
+             (userinfo, _, Acc) -> Acc;
+             (host, _, Acc) -> Acc;
+             (port, _, Acc) -> Acc;
+             (path, _, Acc) -> Acc;
+             (query, _, Acc) -> Acc;
+             (fragment, _, Acc) -> Acc;
+             (_, _, _) -> false
+          end,
+    maps:fold(Fun, true, Map).
+
+
+starts_with_two_slash([$/,$/|_]) ->
+    true;
+starts_with_two_slash(?STRING_REST("//", _)) ->
+    true;
+starts_with_two_slash(_) -> false.
+
+
+update_scheme(#{scheme := Scheme}, _) ->
+    add_colon_postfix(encode_scheme(Scheme));
+update_scheme(#{}, _) ->
+    empty.
+
+
+update_userinfo(#{userinfo := Userinfo}, empty) ->
+    add_auth_prefix(encode_userinfo(Userinfo));
+update_userinfo(#{userinfo := Userinfo}, URI) ->
+    concat(URI,add_auth_prefix(encode_userinfo(Userinfo)));
+update_userinfo(#{}, empty) ->
+    empty;
+update_userinfo(#{}, URI) ->
+    URI.
+
+
+update_host(#{host := Host}, empty) ->
+    add_auth_prefix(encode_host(Host));
+update_host(#{host := Host} = Map, URI) ->
+    concat(URI,add_host_prefix(Map, encode_host(Host)));
+update_host(#{}, empty) ->
+    empty;
+update_host(#{}, URI) ->
+    URI.
+
+
+%% URI cannot be empty for ports. E.g. ":8080" is not a valid URI
+update_port(#{port := undefined}, URI) ->
+    concat(URI, <<":">>);
+update_port(#{port := Port}, URI) ->
+    concat(URI,add_colon(encode_port(Port)));
+update_port(#{}, URI) ->
+    URI.
+
+
+update_path(#{path := Path}, empty) ->
+    encode_path(Path);
+update_path(#{path := Path}, URI) ->
+    concat(URI,encode_path(Path));
+update_path(#{}, empty) ->
+    empty;
+update_path(#{}, URI) ->
+    URI.
+
+
+update_query(#{query := Query}, empty) ->
+    encode_query(Query);
+update_query(#{query := Query}, URI) ->
+    concat(URI,add_question_mark(encode_query(Query)));
+update_query(#{}, empty) ->
+    empty;
+update_query(#{}, URI) ->
+    URI.
+
+
+update_fragment(#{fragment := Fragment}, empty) ->
+    add_hashmark(encode_fragment(Fragment));
+update_fragment(#{fragment := Fragment}, URI) ->
+    concat(URI,add_hashmark(encode_fragment(Fragment)));
+update_fragment(#{}, empty) ->
+    "";
+update_fragment(#{}, URI) ->
+    URI.
+
+%%-------------------------------------------------------------------------
+%% Concatenates its arguments that can be lists and binaries.
+%% The result is a list if at least one of its argument is a list and
+%% binary otherwise.
+%%-------------------------------------------------------------------------
+concat(A, B) when is_binary(A), is_binary(B) ->
+    <<A/binary, B/binary>>;
+concat(A, B) when is_binary(A), is_list(B) ->
+    unicode:characters_to_list(A) ++ B;
+concat(A, B) when is_list(A) ->
+    A ++ maybe_to_list(B).
+
+add_hashmark(Comp) when is_binary(Comp) ->
+    <<$#, Comp/binary>>;
+add_hashmark(Comp) when is_list(Comp) ->
+    [$#|Comp].
+
+add_question_mark(Comp) when is_binary(Comp) ->
+    <<$?, Comp/binary>>;
+add_question_mark(Comp) when is_list(Comp) ->
+    [$?|Comp].
+
+add_colon(Comp) when is_binary(Comp) ->
+    <<$:, Comp/binary>>.
+
+add_colon_postfix(Comp) when is_binary(Comp) ->
+    <<Comp/binary,$:>>;
+add_colon_postfix(Comp) when is_list(Comp) ->
+    Comp ++ ":".
+
+add_auth_prefix(Comp) when is_binary(Comp) ->
+    <<"//", Comp/binary>>;
+add_auth_prefix(Comp) when is_list(Comp) ->
+    [$/,$/|Comp].
+
+add_host_prefix(#{userinfo := _}, Host) when is_binary(Host) ->
+    <<$@,Host/binary>>;
+add_host_prefix(#{}, Host) when is_binary(Host) ->
+    <<"//",Host/binary>>;
+add_host_prefix(#{userinfo := _}, Host) when is_list(Host) ->
+    [$@|Host];
+add_host_prefix(#{}, Host) when is_list(Host) ->
+    [$/,$/|Host].
+
+maybe_to_list(Comp) when is_binary(Comp) -> unicode:characters_to_list(Comp);
+maybe_to_list(Comp) -> Comp.
+
+encode_port(Port) ->
+    integer_to_binary(Port).
+
+%%-------------------------------------------------------------------------
+%% Helper functions for transcode
+%%-------------------------------------------------------------------------
+
+%%-------------------------------------------------------------------------
+%% uri_string:transcode(<<"x%00%00%00%F6"/utf32>>).
+%% 1. Convert (transcode/2) input to list form (list of unicode codepoints)
+%%    "x%00%00%00%F6"
+%% 2. Accumulate characters until percent-encoded segment (transcode/4).
+%%    Acc = "x"
+%% 3. Convert percent-encoded triplets to binary form (transcode_pct/4)
+%%    <<0,0,0,246>>
+%% 4. Transcode in-encoded binary to out-encoding (utf32 -> utf8):
+%%    <<195,182>>
+%% 5. Percent-encode out-encoded binary:
+%%    <<"%C3%B6"/utf8>> = <<37,67,51,37,66,54>>
+%% 6. Convert binary to list form, reverse it and append the accumulator
+%%    "6B%3C%" + "x"
+%% 7. Reverse Acc and return it
+%%-------------------------------------------------------------------------
+transcode([$%,_C0,_C1|_Rest] = L, Acc, InEnc, OutEnc) ->
+    transcode_pct(L, Acc, <<>>, InEnc, OutEnc);
+transcode([_C|_Rest] = L, Acc, InEnc, OutEnc) ->
+    transcode(L, Acc, [], InEnc, OutEnc).
+%%
+transcode([$%,_C0,_C1|_Rest] = L, Acc, List, InEncoding, OutEncoding) ->
+    transcode_pct(L, List ++ Acc, <<>>, InEncoding, OutEncoding);
+transcode([C|Rest], Acc, List, InEncoding, OutEncoding) ->
+    transcode(Rest, Acc, [C|List], InEncoding, OutEncoding);
+transcode([], Acc, List, _InEncoding, _OutEncoding) ->
+    lists:reverse(List ++ Acc).
+
+
+%% Transcode percent-encoded segment
+transcode_pct([$%,C0,C1|Rest] = L, Acc, B, InEncoding, OutEncoding) ->
+    case is_hex_digit(C0) andalso is_hex_digit(C1) of
+        true ->
+            Int = ?HEX2DEC(C0)*16+?HEX2DEC(C1),
+            transcode_pct(Rest, Acc, <<B/binary, Int>>, InEncoding, OutEncoding);
+        false -> throw({error, invalid_percent_encoding,L})
+    end;
+transcode_pct([_C|_Rest] = L, Acc, B, InEncoding, OutEncoding) ->
+    OutBinary = convert_to_binary(B, InEncoding, OutEncoding),
+    PctEncUtf8 = percent_encode_segment(OutBinary),
+    Out = lists:reverse(convert_to_list(PctEncUtf8, utf8)),
+    transcode(L, Out ++ Acc, [], InEncoding, OutEncoding);
+transcode_pct([], Acc, B, InEncoding, OutEncoding) ->
+    OutBinary = convert_to_binary(B, InEncoding, OutEncoding),
+    PctEncUtf8 = percent_encode_segment(OutBinary),
+    Out = convert_to_list(PctEncUtf8, utf8),
+    lists:reverse(Acc) ++ Out.
+
+
+%% Convert to binary
+convert_to_binary(Binary, InEncoding, OutEncoding) ->
+    case unicode:characters_to_binary(Binary, InEncoding, OutEncoding) of
+        {error, _List, RestData} ->
+            throw({error, invalid_input, RestData});
+        {incomplete, _List, RestData} ->
+            throw({error, invalid_input, RestData});
+        Result ->
+            Result
+    end.
+
+
+%% Convert to list
+convert_to_list(Binary, InEncoding) ->
+    case unicode:characters_to_list(Binary, InEncoding) of
+        {error, _List, RestData} ->
+            throw({error, invalid_input, RestData});
+        {incomplete, _List, RestData} ->
+            throw({error, invalid_input, RestData});
+        Result ->
+            Result
+    end.
+
+
+%% Flatten input list
+flatten_list([], _) ->
+    [];
+flatten_list(L, InEnc) ->
+    flatten_list(L, InEnc, []).
+%%
+flatten_list([H|T], InEnc, Acc) when is_binary(H) ->
+    L = convert_to_list(H, InEnc),
+    flatten_list(T, InEnc, lists:reverse(L) ++ Acc);
+flatten_list([H|T], InEnc, Acc) when is_list(H) ->
+    flatten_list(H ++ T, InEnc, Acc);
+flatten_list([H|T], InEnc, Acc) ->
+    flatten_list(T, InEnc, [H|Acc]);
+flatten_list([], _InEnc, Acc) ->
+    lists:reverse(Acc);
+flatten_list(Arg, _, _) ->
+    throw({error, invalid_input, Arg}).
+
+
+percent_encode_segment(Segment) ->
+    percent_encode_binary(Segment, <<>>).
+
+
+%%-------------------------------------------------------------------------
+%% Helper functions for compose_query
+%%-------------------------------------------------------------------------
+
+%% Returns separator to be used between key-value pairs
+get_separator(L) when length(L) =:= 0 ->
+    <<>>;
+get_separator(_L) ->
+    <<"&">>.
+
+
+%% HTML5 - 4.10.22.6 URL-encoded form data - encoding
+form_urlencode(Cs, [{encoding, latin1}]) when is_list(Cs) ->
+    B = convert_to_binary(Cs, utf8, utf8),
+    html5_byte_encode(base10_encode(B));
+form_urlencode(Cs, [{encoding, latin1}]) when is_binary(Cs) ->
+    html5_byte_encode(base10_encode(Cs));
+form_urlencode(Cs, [{encoding, Encoding}])
+  when is_list(Cs), Encoding =:= utf8; Encoding =:= unicode ->
+    B = convert_to_binary(Cs, utf8, Encoding),
+    html5_byte_encode(B);
+form_urlencode(Cs, [{encoding, Encoding}])
+  when is_binary(Cs), Encoding =:= utf8; Encoding =:= unicode ->
+    html5_byte_encode(Cs);
+form_urlencode(Cs, [{encoding, Encoding}]) when is_list(Cs); is_binary(Cs) ->
+    throw({error,invalid_encoding, Encoding});
+form_urlencode(Cs, _) ->
+    throw({error,invalid_input, Cs}).
+
+
+%% For each character in the entry's name and value that cannot be expressed using
+%% the selected character encoding, replace the character by a string consisting of
+%% a U+0026 AMPERSAND character (&), a "#" (U+0023) character, one or more ASCII
+%% digits representing the Unicode code point of the character in base ten, and
+%% finally a ";" (U+003B) character.
+base10_encode(Cs) ->
+    base10_encode(Cs, <<>>).
+%%
+base10_encode(<<>>, Acc) ->
+    Acc;
+base10_encode(<<H/utf8,T/binary>>, Acc) when H > 255 ->
+    Base10 = convert_to_binary(integer_to_list(H,10), utf8, utf8),
+    base10_encode(T, <<Acc/binary,"&#",Base10/binary,$;>>);
+base10_encode(<<H/utf8,T/binary>>, Acc) ->
+    base10_encode(T, <<Acc/binary,H>>).
+
+
+html5_byte_encode(B) ->
+    html5_byte_encode(B, <<>>).
+%%
+html5_byte_encode(<<>>, Acc) ->
+    Acc;
+html5_byte_encode(<<$ ,T/binary>>, Acc) ->
+    html5_byte_encode(T, <<Acc/binary,$+>>);
+html5_byte_encode(<<H,T/binary>>, Acc) ->
+    case is_url_char(H) of
+        true ->
+            html5_byte_encode(T, <<Acc/binary,H>>);
+        false ->
+            <<A:4,B:4>> = <<H>>,
+            html5_byte_encode(T, <<Acc/binary,$%,(?DEC2HEX(A)),(?DEC2HEX(B))>>)
+    end;
+html5_byte_encode(H, _Acc) ->
+    throw({error,invalid_input, H}).
+
+
+%% Return true if input char can appear in form-urlencoded string
+%% Allowed chararacters:
+%%   0x2A, 0x2D, 0x2E, 0x30 to 0x39, 0x41 to 0x5A,
+%%   0x5F, 0x61 to 0x7A
+is_url_char(C)
+  when C =:= 16#2A; C =:= 16#2D;
+       C =:= 16#2E; C =:= 16#5F;
+       16#30 =< C, C =< 16#39;
+       16#41 =< C, C =< 16#5A;
+       16#61 =< C, C =< 16#7A -> true;
+is_url_char(_) -> false.
+
+
+%%-------------------------------------------------------------------------
+%% Helper functions for dissect_query
+%%-------------------------------------------------------------------------
+dissect_query_key(<<$=,T/binary>>, IsList, Acc, Key, Value) ->
+    dissect_query_value(T, IsList, Acc, Key, Value);
+dissect_query_key(<<"&#",T/binary>>, IsList, Acc, Key, Value) ->
+    dissect_query_key(T, IsList, Acc, <<Key/binary,"&#">>, Value);
+dissect_query_key(<<$&,_T/binary>>, _IsList, _Acc, _Key, _Value) ->
+    throw({error, missing_value, "&"});
+dissect_query_key(<<H,T/binary>>, IsList, Acc, Key, Value) ->
+    dissect_query_key(T, IsList, Acc, <<Key/binary,H>>, Value);
+dissect_query_key(B, _, _, _, _) ->
+    throw({error, missing_value, B}).
+
+
+dissect_query_value(<<$&,T/binary>>, IsList, Acc, Key, Value) ->
+    K = form_urldecode(IsList, Key),
+    V = form_urldecode(IsList, Value),
+    dissect_query_key(T, IsList, [{K,V}|Acc], <<>>, <<>>);
+dissect_query_value(<<H,T/binary>>, IsList, Acc, Key, Value) ->
+    dissect_query_value(T, IsList, Acc, Key, <<Value/binary,H>>);
+dissect_query_value(<<>>, IsList, Acc, Key, Value) ->
+    K = form_urldecode(IsList, Key),
+    V = form_urldecode(IsList, Value),
+    lists:reverse([{K,V}|Acc]).
+
+
+%% Form-urldecode input based on RFC 1866 [8.2.1]
+form_urldecode(true, B) ->
+    Result = base10_decode(form_urldecode(B, <<>>)),
+    convert_to_list(Result, utf8);
+form_urldecode(false, B) ->
+    base10_decode(form_urldecode(B, <<>>));
+form_urldecode(<<>>, Acc) ->
+    Acc;
+form_urldecode(<<$+,T/binary>>, Acc) ->
+    form_urldecode(T, <<Acc/binary,$ >>);
+form_urldecode(<<$%,C0,C1,T/binary>>, Acc) ->
+    case is_hex_digit(C0) andalso is_hex_digit(C1) of
+        true ->
+            V = ?HEX2DEC(C0)*16+?HEX2DEC(C1),
+            form_urldecode(T, <<Acc/binary, V>>);
+        false ->
+            L = convert_to_list(<<$%,C0,C1,T/binary>>, utf8),
+            throw({error, invalid_percent_encoding, L})
+    end;
+form_urldecode(<<H/utf8,T/binary>>, Acc) ->
+    form_urldecode(T, <<Acc/binary,H/utf8>>);
+form_urldecode(<<H,_/binary>>, _Acc) ->
+    throw({error, invalid_character, [H]}).
+
+base10_decode(Cs) ->
+    base10_decode(Cs, <<>>).
+%
+base10_decode(<<>>, Acc) ->
+    Acc;
+base10_decode(<<"&#",T/binary>>, Acc) ->
+    base10_decode_unicode(T, Acc);
+base10_decode(<<H/utf8,T/binary>>, Acc) ->
+    base10_decode(T,<<Acc/binary,H/utf8>>);
+base10_decode(<<H,_/binary>>, _) ->
+    throw({error, invalid_input, [H]}).
+
+
+base10_decode_unicode(B, Acc) ->
+    base10_decode_unicode(B, 0, Acc).
+%%
+base10_decode_unicode(<<H/utf8,T/binary>>, Codepoint, Acc) when $0 =< H, H =< $9 ->
+    Res = Codepoint * 10 + (H - $0),
+    base10_decode_unicode(T, Res, Acc);
+base10_decode_unicode(<<$;,T/binary>>, Codepoint, Acc) ->
+    base10_decode(T, <<Acc/binary,Codepoint/utf8>>);
+base10_decode_unicode(<<H,_/binary>>, _, _) ->
+    throw({error, invalid_input, [H]}).
+
+
+%%-------------------------------------------------------------------------
+%% Helper functions for normalize
+%%-------------------------------------------------------------------------
+
+%% 6.2.2.1.  Case Normalization
+normalize_case(#{scheme := Scheme, host := Host} = Map) ->
+    Map#{scheme => to_lower(Scheme),
+         host => to_lower(Host)};
+normalize_case(#{host := Host} = Map) ->
+    Map#{host => to_lower(Host)};
+normalize_case(#{scheme := Scheme} = Map) ->
+    Map#{scheme => to_lower(Scheme)};
+normalize_case(#{} = Map) ->
+    Map.
+
+
+to_lower(Cs) when is_list(Cs) ->
+    B = convert_to_binary(Cs, utf8, utf8),
+    convert_to_list(to_lower(B), utf8);
+to_lower(Cs) when is_binary(Cs) ->
+    to_lower(Cs, <<>>).
+%%
+to_lower(<<C,Cs/binary>>, Acc) when $A =< C, C =< $Z ->
+    to_lower(Cs, <<Acc/binary,(C + 32)>>);
+to_lower(<<C,Cs/binary>>, Acc) ->
+    to_lower(Cs, <<Acc/binary,C>>);
+to_lower(<<>>, Acc) ->
+    Acc.
+
+
+%% 6.2.2.3. Path Segment Normalization
+%% 5.2.4.   Remove Dot Segments
+normalize_path_segment(Map) ->
+    Path = maps:get(path, Map, undefined),
+    Map#{path => remove_dot_segments(Path)}.
+
+
+remove_dot_segments(Path) when is_binary(Path) ->
+    remove_dot_segments(Path, <<>>);
+remove_dot_segments(Path) when is_list(Path) ->
+    B = convert_to_binary(Path, utf8, utf8),
+    B1 = remove_dot_segments(B, <<>>),
+    convert_to_list(B1, utf8).
+%%
+remove_dot_segments(<<>>, Output) ->
+    Output;
+remove_dot_segments(<<"../",T/binary>>, Output) ->
+    remove_dot_segments(T, Output);
+remove_dot_segments(<<"./",T/binary>>, Output) ->
+    remove_dot_segments(T, Output);
+remove_dot_segments(<<"/./",T/binary>>, Output) ->
+    remove_dot_segments(<<$/,T/binary>>, Output);
+remove_dot_segments(<<"/.">>, Output) ->
+    remove_dot_segments(<<$/>>, Output);
+remove_dot_segments(<<"/../",T/binary>>, Output) ->
+    Out1 = remove_last_segment(Output),
+    remove_dot_segments(<<$/,T/binary>>, Out1);
+remove_dot_segments(<<"/..">>, Output) ->
+    Out1 = remove_last_segment(Output),
+    remove_dot_segments(<<$/>>, Out1);
+remove_dot_segments(<<$.>>, Output) ->
+    remove_dot_segments(<<>>, Output);
+remove_dot_segments(<<"..">>, Output) ->
+    remove_dot_segments(<<>>, Output);
+remove_dot_segments(Input, Output) ->
+    {First, Rest} = first_path_segment(Input),
+    remove_dot_segments(Rest, <<Output/binary,First/binary>>).
+
+
+first_path_segment(Input) ->
+    F = first_path_segment(Input, <<>>),
+    split_binary(Input, byte_size(F)).
+%%
+first_path_segment(<<$/,T/binary>>, Acc) ->
+    first_path_segment_end(<<T/binary>>, <<Acc/binary,$/>>);
+first_path_segment(<<C,T/binary>>, Acc) ->
+    first_path_segment_end(<<T/binary>>, <<Acc/binary,C>>).
+
+
+first_path_segment_end(<<>>, Acc) ->
+    Acc;
+first_path_segment_end(<<$/,_/binary>>, Acc) ->
+    Acc;
+first_path_segment_end(<<C,T/binary>>, Acc) ->
+    first_path_segment_end(<<T/binary>>, <<Acc/binary,C>>).
+
+
+remove_last_segment(<<>>) ->
+    <<>>;
+remove_last_segment(B) ->
+    {Init, Last} = split_binary(B, byte_size(B) - 1),
+    case Last of
+        <<$/>> ->
+            Init;
+        _Char ->
+            remove_last_segment(Init)
+    end.
+
+
+%% RFC 3986, 6.2.3.  Scheme-Based Normalization
+normalize_scheme_based(Map) ->
+    Scheme = maps:get(scheme, Map, undefined),
+    Port = maps:get(port, Map, undefined),
+    Path= maps:get(path, Map, undefined),
+    normalize_scheme_based(Map, Scheme, Port, Path).
+%%
+normalize_scheme_based(Map, Scheme, Port, Path)
+  when Scheme =:= "http"; Scheme =:= <<"http">> ->
+    normalize_http(Map, Port, Path);
+normalize_scheme_based(Map, Scheme, Port, Path)
+  when Scheme =:= "https"; Scheme =:= <<"https">> ->
+    normalize_https(Map, Port, Path);
+normalize_scheme_based(Map, Scheme, Port, _Path)
+  when Scheme =:= "ftp"; Scheme =:= <<"ftp">> ->
+    normalize_ftp(Map, Port);
+normalize_scheme_based(Map, Scheme, Port, _Path)
+  when Scheme =:= "ssh"; Scheme =:= <<"ssh">> ->
+    normalize_ssh_sftp(Map, Port);
+normalize_scheme_based(Map, Scheme, Port, _Path)
+  when Scheme =:= "sftp"; Scheme =:= <<"sftp">> ->
+    normalize_ssh_sftp(Map, Port);
+normalize_scheme_based(Map, Scheme, Port, _Path)
+  when Scheme =:= "tftp"; Scheme =:= <<"tftp">> ->
+    normalize_tftp(Map, Port);
+normalize_scheme_based(Map, _, _, _) ->
+    Map.
+
+
+normalize_http(Map, Port, Path) ->
+    M1 = normalize_port(Map, Port, 80),
+    normalize_http_path(M1, Path).
+
+
+normalize_https(Map, Port, Path) ->
+    M1 = normalize_port(Map, Port, 443),
+    normalize_http_path(M1, Path).
+
+
+normalize_ftp(Map, Port) ->
+    normalize_port(Map, Port, 21).
+
+
+normalize_ssh_sftp(Map, Port) ->
+    normalize_port(Map, Port, 22).
+
+
+normalize_tftp(Map, Port) ->
+    normalize_port(Map, Port, 69).
+
+
+normalize_port(Map, Port, Default) ->
+    case Port of
+        Default ->
+            maps:remove(port, Map);
+        _Else ->
+            Map
+    end.
+
+
+normalize_http_path(Map, Path) ->
+    case Path of
+        "" ->
+            Map#{path => "/"};
+        <<>> ->
+            Map#{path => <<"/">>};
+        _Else ->
+            Map
+    end.
diff --git a/lib/stdlib/test/Makefile b/lib/stdlib/test/Makefile
index 523cb95065..8490770f3d 100644
--- a/lib/stdlib/test/Makefile
+++ b/lib/stdlib/test/Makefile
@@ -87,6 +87,7 @@ MODULES= \
 	timer_simple_SUITE \
 	unicode_SUITE \
 	unicode_util_SUITE \
+	uri_string_SUITE \
 	win32reg_SUITE \
 	y2k_SUITE \
 	select_SUITE \
diff --git a/lib/stdlib/test/base64_SUITE.erl b/lib/stdlib/test/base64_SUITE.erl
index 48b3f5f959..1fc4c3fc0e 100644
--- a/lib/stdlib/test/base64_SUITE.erl
+++ b/lib/stdlib/test/base64_SUITE.erl
@@ -97,10 +97,9 @@ base64_otp_5635(Config) when is_list(Config) ->
     <<"===">> = base64:decode(base64:encode("===")),
     ok.
 %%-------------------------------------------------------------------------
-%% OTP-6279: Guard needed so that function fails in a correct
-%% way for faulty input, i.e. function_clause.
+%% OTP-6279: Make sure illegal characters are rejected when decoding.
 base64_otp_6279(Config) when is_list(Config) ->
-    {'EXIT',{function_clause, _}} = (catch base64:decode("dGVzda==a")),
+    {'EXIT',_} = (catch base64:decode("dGVzda==a")),
     ok.
 %%-------------------------------------------------------------------------
 %% Encode and decode big binaries.
@@ -115,48 +114,61 @@ big(Config) when is_list(Config) ->
 %%-------------------------------------------------------------------------
 %% Make sure illegal characters are rejected when decoding.
 illegal(Config) when is_list(Config) ->
-    {'EXIT',{function_clause, _}} = (catch base64:decode("()")),
+    %% A few samples with different error reasons. Nothing can be
+    %% assumed about the reason for the crash.
+    {'EXIT',_} = (catch base64:decode("()")),
+    {'EXIT',_} = (catch base64:decode(<<19:8,20:8,21:8,22:8>>)),
+    {'EXIT',_} = (catch base64:decode([19,20,21,22])),
+    {'EXIT',_} = (catch base64:decode_to_string(<<19:8,20:8,21:8,22:8>>)),
+    {'EXIT',_} = (catch base64:decode_to_string([19,20,21,22])),
     ok.
 %%-------------------------------------------------------------------------
 %% mime_decode and mime_decode_to_string have different implementations
-%% so test both with the same input separately. Both functions have
-%% the same implementation for binary/string arguments.
+%% so test both with the same input separately.
 %%
 %% Test base64:mime_decode/1.
 mime_decode(Config) when is_list(Config) ->
+    MimeDecode = fun(In) ->
+                         Out = base64:mime_decode(In),
+                         Out = base64:mime_decode(binary_to_list(In))
+                 end,
     %% Test correct padding
-    <<"one">> = base64:mime_decode(<<"b25l">>),
-    <<"on">>  = base64:mime_decode(<<"b24=">>),
-    <<"o">>   = base64:mime_decode(<<"bw==">>),
+    <<"one">> = MimeDecode(<<"b25l">>),
+    <<"on">>  = MimeDecode(<<"b24=">>),
+    <<"o">>   = MimeDecode(<<"bw==">>),
     %% Test 1 extra padding
-    <<"one">> = base64:mime_decode(<<"b25l= =">>),
-    <<"on">>  = base64:mime_decode(<<"b24== =">>),
-    <<"o">>   = base64:mime_decode(<<"bw=== =">>),
+    <<"one">> = MimeDecode(<<"b25l= =">>),
+    <<"on">>  = MimeDecode(<<"b24== =">>),
+    <<"o">>   = MimeDecode(<<"bw=== =">>),
     %% Test 2 extra padding
-    <<"one">> = base64:mime_decode(<<"b25l===">>),
-    <<"on">>  = base64:mime_decode(<<"b24====">>),
-    <<"o">>   = base64:mime_decode(<<"bw=====">>),
+    <<"one">> = MimeDecode(<<"b25l===">>),
+    <<"on">>  = MimeDecode(<<"b24====">>),
+    <<"o">>   = MimeDecode(<<"bw=====">>),
     %% Test misc embedded padding
-    <<"one">> = base64:mime_decode(<<"b2=5l===">>),
-    <<"on">>  = base64:mime_decode(<<"b=24====">>),
-    <<"o">>   = base64:mime_decode(<<"b=w=====">>),
+    <<"one">> = MimeDecode(<<"b2=5l===">>),
+    <<"on">>  = MimeDecode(<<"b=24====">>),
+    <<"o">>   = MimeDecode(<<"b=w=====">>),
     %% Test misc white space and illegals with embedded padding
-    <<"one">> = base64:mime_decode(<<" b~2=\r\n5()l===">>),
-    <<"on">>  = base64:mime_decode(<<"\tb =2\"¤4=¤=   ==">>),
-    <<"o">>   = base64:mime_decode(<<"\nb=w=====">>),
+    <<"one">> = MimeDecode(<<" b~2=\r\n5()l===">>),
+    <<"on">>  = MimeDecode(<<"\tb =2\"¤4=¤=   ==">>),
+    <<"o">>   = MimeDecode(<<"\nb=w=====">>),
     %% Two pads
     <<"Aladdin:open sesame">> =
-	base64:mime_decode("QWxhZGRpbjpvc()GVuIHNlc2FtZQ=="),
+	MimeDecode(<<"QWxhZGRpbjpvc()GVuIHNlc2FtZQ==">>),
     %% One pad to ignore, followed by more text
-    <<"Hello World!!">> = base64:mime_decode(<<"SGVsb)(G8gV29ybGQ=h IQ= =">>),
+    <<"Hello World!!">> = MimeDecode(<<"SGVsb)(G8gV29ybGQ=h IQ= =">>),
     %% No pad
     <<"Aladdin:open sesam">> =
-	base64:mime_decode("QWxhZGRpbjpvcG¤\")(VuIHNlc2Ft"),
+	MimeDecode(<<"QWxhZGRpbjpvcG¤\")(VuIHNlc2Ft">>),
     %% Encoded base 64 strings may be divided by non base 64 chars.
     %% In this cases whitespaces.
     <<"0123456789!@#0^&*();:<>,. []{}">> =
-	base64:mime_decode(
+	MimeDecode(
 	  <<"MDEy MzQ1Njc4 \tOSFAIzBeJ \nio)(oKTs6 PD4sLi \r\nBbXXt9">>),
+    %% Zeroes
+    <<"012">> = MimeDecode(<<"\000M\000D\000E\000y=\000">>),
+    <<"o">>   = MimeDecode(<<"bw==\000">>),
+    <<"o">>   = MimeDecode(<<"bw=\000=">>),
     ok.
 
 %%-------------------------------------------------------------------------
@@ -165,39 +177,48 @@ mime_decode(Config) when is_list(Config) ->
 
 %% Test base64:mime_decode_to_string/1.
 mime_decode_to_string(Config) when is_list(Config) ->
+    MimeDecodeToString =
+        fun(In) ->
+                Out = base64:mime_decode_to_string(In),
+                Out = base64:mime_decode_to_string(binary_to_list(In))
+        end,
     %% Test correct padding
-    "one" = base64:mime_decode_to_string(<<"b25l">>),
-    "on"  = base64:mime_decode_to_string(<<"b24=">>),
-    "o"   = base64:mime_decode_to_string(<<"bw==">>),
+    "one" = MimeDecodeToString(<<"b25l">>),
+    "on"  = MimeDecodeToString(<<"b24=">>),
+    "o"   = MimeDecodeToString(<<"bw==">>),
     %% Test 1 extra padding
-    "one" = base64:mime_decode_to_string(<<"b25l= =">>),
-    "on"  = base64:mime_decode_to_string(<<"b24== =">>),
-    "o"   = base64:mime_decode_to_string(<<"bw=== =">>),
+    "one" = MimeDecodeToString(<<"b25l= =">>),
+    "on"  = MimeDecodeToString(<<"b24== =">>),
+    "o"   = MimeDecodeToString(<<"bw=== =">>),
     %% Test 2 extra padding
-    "one" = base64:mime_decode_to_string(<<"b25l===">>),
-    "on"  = base64:mime_decode_to_string(<<"b24====">>),
-    "o"   = base64:mime_decode_to_string(<<"bw=====">>),
+    "one" = MimeDecodeToString(<<"b25l===">>),
+    "on"  = MimeDecodeToString(<<"b24====">>),
+    "o"   = MimeDecodeToString(<<"bw=====">>),
     %% Test misc embedded padding
-    "one" = base64:mime_decode_to_string(<<"b2=5l===">>),
-    "on"  = base64:mime_decode_to_string(<<"b=24====">>),
-    "o"   = base64:mime_decode_to_string(<<"b=w=====">>),
+    "one" = MimeDecodeToString(<<"b2=5l===">>),
+    "on"  = MimeDecodeToString(<<"b=24====">>),
+    "o"   = MimeDecodeToString(<<"b=w=====">>),
     %% Test misc white space and illegals with embedded padding
-    "one" = base64:mime_decode_to_string(<<" b~2=\r\n5()l===">>),
-    "on"  = base64:mime_decode_to_string(<<"\tb =2\"¤4=¤=   ==">>),
-    "o"   = base64:mime_decode_to_string(<<"\nb=w=====">>),
+    "one" = MimeDecodeToString(<<" b~2=\r\n5()l===">>),
+    "on"  = MimeDecodeToString(<<"\tb =2\"¤4=¤=   ==">>),
+    "o"   = MimeDecodeToString(<<"\nb=w=====">>),
     %% Two pads
     "Aladdin:open sesame" =
-	base64:mime_decode_to_string("QWxhZGRpbjpvc()GVuIHNlc2FtZQ=="),
+	MimeDecodeToString(<<"QWxhZGRpbjpvc()GVuIHNlc2FtZQ==">>),
     %% One pad to ignore, followed by more text
-    "Hello World!!" = base64:mime_decode_to_string(<<"SGVsb)(G8gV29ybGQ=h IQ= =">>),
+    "Hello World!!" = MimeDecodeToString(<<"SGVsb)(G8gV29ybGQ=h IQ= =">>),
     %% No pad
     "Aladdin:open sesam" =
-	base64:mime_decode_to_string("QWxhZGRpbjpvcG¤\")(VuIHNlc2Ft"),
+	MimeDecodeToString(<<"QWxhZGRpbjpvcG¤\")(VuIHNlc2Ft">>),
     %% Encoded base 64 strings may be divided by non base 64 chars.
     %% In this cases whitespaces.
     "0123456789!@#0^&*();:<>,. []{}" =
-	base64:mime_decode_to_string(
+	MimeDecodeToString(
 	  <<"MDEy MzQ1Njc4 \tOSFAIzBeJ \nio)(oKTs6 PD4sLi \r\nBbXXt9">>),
+    %% Zeroes
+    "012" = MimeDecodeToString(<<"\000M\000D\000E\000y=\000">>),
+    "o"   = MimeDecodeToString(<<"bw==\000">>),
+    "o"   = MimeDecodeToString(<<"bw=\000=">>),
     ok.
 
 %%-------------------------------------------------------------------------
diff --git a/lib/stdlib/test/erl_lint_SUITE.erl b/lib/stdlib/test/erl_lint_SUITE.erl
index b76bece07f..5efffc6a5c 100644
--- a/lib/stdlib/test/erl_lint_SUITE.erl
+++ b/lib/stdlib/test/erl_lint_SUITE.erl
@@ -66,7 +66,8 @@
          otp_11851/1,otp_11879/1,otp_13230/1,
          record_errors/1, otp_11879_cont/1,
          non_latin1_module/1, otp_14323/1,
-         get_stacktrace/1, otp_14285/1, otp_14378/1]).
+         get_stacktrace/1, stacktrace_syntax/1,
+         otp_14285/1, otp_14378/1]).
 
 suite() ->
     [{ct_hooks,[ts_install_cth]},
@@ -87,7 +88,7 @@ all() ->
      maps, maps_type, maps_parallel_match,
      otp_11851, otp_11879, otp_13230,
      record_errors, otp_11879_cont, non_latin1_module, otp_14323,
-     get_stacktrace, otp_14285, otp_14378].
+     get_stacktrace, stacktrace_syntax, otp_14285, otp_14378].
 
 groups() -> 
     [{unused_vars_warn, [],
@@ -4129,6 +4130,40 @@ get_stacktrace(Config) ->
     run(Config, Ts),
     ok.
 
+stacktrace_syntax(Config) ->
+    Ts = [{guard,
+           <<"t1() ->
+                  try error(foo)
+                  catch _:_:Stk when is_number(Stk) -> ok
+                  end.
+           ">>,
+           [],
+           {errors,[{3,erl_lint,{stacktrace_guard,'Stk'}}],[]}},
+          {bound,
+           <<"t1() ->
+                  Stk = [],
+                  try error(foo)
+                  catch _:_:Stk -> ok
+                  end.
+           ">>,
+           [],
+           {errors,[{4,erl_lint,{stacktrace_bound,'Stk'}}],[]}},
+          {guard_and_bound,
+           <<"t1() ->
+                  Stk = [],
+                  try error(foo)
+                  catch _:_:Stk when is_integer(Stk) -> ok
+                  end.
+           ">>,
+           [],
+           {errors,[{4,erl_lint,{stacktrace_bound,'Stk'}},
+                    {4,erl_lint,{stacktrace_guard,'Stk'}}],[]}}
+         ],
+
+    run(Config, Ts),
+    ok.
+
+
 %% Unicode atoms.
 otp_14285(Config) ->
     %% A small sample of all the errors and warnings in module erl_lint.
diff --git a/lib/stdlib/test/ets_SUITE.erl b/lib/stdlib/test/ets_SUITE.erl
index 5a5e282998..07c8b60cbd 100644
--- a/lib/stdlib/test/ets_SUITE.erl
+++ b/lib/stdlib/test/ets_SUITE.erl
@@ -1682,7 +1682,7 @@ do_random_test() ->
     ets:delete(Set),
     verify_etsmem(EtsMem).
 
-%% Ttest various variants of update_element.
+%% Test various variants of update_element.
 update_element(Config) when is_list(Config) ->
     EtsMem = etsmem(),
     repeat_for_opts(fun update_element_opts/1),
@@ -6369,7 +6369,7 @@ very_big_num(0, Result) ->
     Result.
 
 make_port() ->
-    open_port({spawn, "efile"}, [eof]).
+    hd(erlang:ports()).
 
 make_pid() ->
     spawn_link(fun sleeper/0).
diff --git a/lib/stdlib/test/filelib_SUITE.erl b/lib/stdlib/test/filelib_SUITE.erl
index 1236fe45f4..930cea347f 100644
--- a/lib/stdlib/test/filelib_SUITE.erl
+++ b/lib/stdlib/test/filelib_SUITE.erl
@@ -33,6 +33,8 @@
 -include_lib("common_test/include/ct.hrl").
 -include_lib("kernel/include/file.hrl").
 
+-define(PRIM_FILE, prim_file).
+
 init_per_testcase(_Case, Config) ->
     Config.
 
@@ -446,10 +448,10 @@ wildcard_symlink(Config) when is_list(Config) ->
 						erl_prim_loader)),
 	    ["sub","symlink"] =
 		basenames(Dir, filelib:wildcard(filename:join(Dir, "*"),
-						prim_file)),
+						?PRIM_FILE)),
 	    ["symlink"] =
 		basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"),
-						prim_file)),
+						?PRIM_FILE)),
 	    ok = file:delete(AFile),
 	    %% The symlink should still be visible even when its target
 	    %% has been deleted.
@@ -465,10 +467,10 @@ wildcard_symlink(Config) when is_list(Config) ->
 						erl_prim_loader)),
 	    ["sub","symlink"] =
 		basenames(Dir, filelib:wildcard(filename:join(Dir, "*"),
-						prim_file)),
+						?PRIM_FILE)),
 	    ["symlink"] =
 		basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"),
-						prim_file)),
+						?PRIM_FILE)),
 	    ok
     end.
 
@@ -497,17 +499,17 @@ is_file_symlink(Config) ->
 	ok ->
 	    true = filelib:is_dir(DirAlias),
 	    true = filelib:is_dir(DirAlias, erl_prim_loader),
-	    true = filelib:is_dir(DirAlias, prim_file),
+	    true = filelib:is_dir(DirAlias, ?PRIM_FILE),
 	    true = filelib:is_file(DirAlias),
 	    true = filelib:is_file(DirAlias, erl_prim_loader),
-	    true = filelib:is_file(DirAlias, prim_file),
+	    true = filelib:is_file(DirAlias, ?PRIM_FILE),
 	    ok = file:make_symlink(AFile,FileAlias),
 	    true = filelib:is_file(FileAlias),
 	    true = filelib:is_file(FileAlias, erl_prim_loader),
-	    true = filelib:is_file(FileAlias, prim_file),
+	    true = filelib:is_file(FileAlias, ?PRIM_FILE),
 	    true = filelib:is_regular(FileAlias),
 	    true = filelib:is_regular(FileAlias, erl_prim_loader),
-	    true = filelib:is_regular(FileAlias, prim_file),
+	    true = filelib:is_regular(FileAlias, ?PRIM_FILE),
 	    ok
     end.
 
@@ -528,11 +530,11 @@ file_props_symlink(Config) ->
 	    {_,_} = LastMod = filelib:last_modified(AFile),
 	    LastMod = filelib:last_modified(Alias),
 	    LastMod = filelib:last_modified(Alias, erl_prim_loader),
-	    LastMod = filelib:last_modified(Alias, prim_file),
+	    LastMod = filelib:last_modified(Alias, ?PRIM_FILE),
 	    FileSize = filelib:file_size(AFile),
 	    FileSize = filelib:file_size(Alias),
 	    FileSize = filelib:file_size(Alias, erl_prim_loader),
-	    FileSize = filelib:file_size(Alias, prim_file)
+	    FileSize = filelib:file_size(Alias, ?PRIM_FILE)
     end.
 
 find_source(Config) when is_list(Config) ->
diff --git a/lib/stdlib/test/filename_SUITE.erl b/lib/stdlib/test/filename_SUITE.erl
index 4c82ec1c22..f284eb1ed6 100644
--- a/lib/stdlib/test/filename_SUITE.erl
+++ b/lib/stdlib/test/filename_SUITE.erl
@@ -30,7 +30,6 @@
 -export([pathtype_bin/1,rootname_bin/1,split_bin/1]).
 -export([t_basedir_api/1, t_basedir_xdg/1, t_basedir_windows/1]).
 -export([safe_relative_path/1]).
--export([validate/1]).
 
 -include_lib("common_test/include/ct.hrl").
 
@@ -44,8 +43,7 @@ all() ->
      absname_bin, absname_bin_2,
      {group,p},
      t_basedir_xdg, t_basedir_windows,
-     safe_relative_path,
-     validate].
+     safe_relative_path].
 
 groups() -> 
     [{p, [parallel],
@@ -109,6 +107,17 @@ absname(Config) when is_list(Config) ->
             [Drive|":/erlang/src"] = filename:absname([Drive|":erlang/src"]),
             "a:/erlang" = filename:absname("a:erlang"),
 
+            "//foo" = filename:absname("//foo"),
+            "//foo/bar" = filename:absname("//foo/bar"),
+            "//foo/\bar" = filename:absname("//foo/\bar"),
+            "//foo/bar/baz" = filename:absname("//foo/bar\\baz"),
+            "//foo/bar/baz" = filename:absname("//foo\\bar/baz"),
+            "//foo" = filename:absname("\\\\foo"),
+            "//foo/bar" = filename:absname("\\\\foo/bar"),
+            "//foo/\bar" = filename:absname("\\\\foo/\bar"),
+            "//foo/bar/baz" = filename:absname("\\\\foo/bar\\baz"),
+            "//foo/bar/baz" = filename:absname("\\\\foo\\bar/baz"),
+
             file:set_cwd(Cwd),
             ok;
         {unix, _} ->
@@ -169,6 +178,23 @@ absname_2(Config) when is_list(Config) ->
                                                       [Drive|":/"]),
             "a:/erlang" = filename:absname("a:erlang", [Drive|":/"]),
 
+            "//foo" = filename:absname("foo","//"),
+            "//foo/bar" = filename:absname("foo/bar", "//"),
+            "//foo/bar" = filename:absname("bar", "//foo"),
+            "//bar" = filename:absname("/bar", "//foo"),
+            "//foo/bar/baz" = filename:absname("bar/baz", "//foo"),
+            "//bar/baz" = filename:absname("//bar/baz", "//foo"),
+            "//\bar" = filename:absname("/\bar", "//foo"),
+            "//foo" = filename:absname("foo","\\\\"),
+            "//foo/bar" = filename:absname("foo/bar", "\\\\"),
+            "//foo/bar" = filename:absname("bar", "\\\\foo"),
+            "//bar" = filename:absname("/bar", "\\\\foo"),
+            "//foo/bar/baz" = filename:absname("bar/baz", "\\\\foo"),
+            "//bar/baz" = filename:absname("\\\\bar/baz", "\\\\foo"),
+            "//\bar" = filename:absname("/\bar", "\\\\foo"),
+            "//bar/baz" = filename:absname("\\\\bar/baz", "//foo"),
+            "//bar/baz" = filename:absname("//bar/baz", "\\\\foo"),
+
             ok;
         _ ->
             "/usr/foo" = filename:absname(foo, "/usr"),
@@ -246,6 +272,18 @@ dirname(Config) when is_list(Config) ->
             "A:usr" = filename:dirname("A:usr/foo.erl"),
             "/usr" = filename:dirname("\\usr\\foo.erl"),
             "/" = filename:dirname("\\usr"),
+            "//foo/bar" = filename:dirname("//foo/bar/baz.erl"),
+            "//foo/\bar" = filename:dirname("//foo/\bar/baz.erl"),
+            "//foo/bar" = filename:dirname("//foo\\bar/baz.erl"),
+            "//foo/bar" = filename:dirname("\\\\foo/bar/baz.erl"),
+            "//foo/\bar" = filename:dirname("\\\\foo/\bar/baz.erl"),
+            "//foo/bar" = filename:dirname("\\\\foo\\bar/baz.erl"),
+            "//foo" = filename:dirname("//foo/baz.erl"),
+            "//foo" = filename:dirname("//foo/\baz.erl"),
+            "//foo" = filename:dirname("//foo\\baz.erl"),
+            "//foo" = filename:dirname("\\\\foo/baz.erl"),
+            "//foo" = filename:dirname("\\\\foo/\baz.erl"),
+            "//foo" = filename:dirname("\\\\foo\\baz.erl"),
             "A:" = filename:dirname("A:");
         _ -> true
     end,
@@ -291,7 +329,6 @@ join(Config) when is_list(Config) ->
     %% join/1 and join/2 (OTP-12158) by using help function
     %% filename_join/2.
     "/" = filename:join(["/"]),
-    "/" = filename:join(["//"]),
     "usr/foo.erl" = filename_join("usr","foo.erl"),
     "/src/foo.erl" = filename_join(usr, "/src/foo.erl"),
     "/src/foo.erl" = filename_join("/src/",'foo.erl'),
@@ -303,7 +340,6 @@ join(Config) when is_list(Config) ->
     "a/b/c/d/e/f/g" = filename_join("a//b/c/", "d//e/f/g"),
     "a/b/c/d/e/f/g" = filename_join("a//b/c", "d//e/f/g"),
     "/d/e/f/g" = filename_join("a//b/c", "/d//e/f/g"),
-    "/d/e/f/g" = filename:join("a//b/c", "//d//e/f/g"),
 
     "foo/bar" = filename_join([$f,$o,$o,$/,[]], "bar"),
 
@@ -334,6 +370,7 @@ join(Config) when is_list(Config) ->
 
     case os:type() of
         {win32, _} ->
+            "//" = filename:join(["//"]),
             "d:/" = filename:join(["D:/"]),
             "d:/" = filename:join(["D:\\"]),
             "d:/abc" = filename_join("D:/", "abc"),
@@ -347,8 +384,35 @@ join(Config) when is_list(Config) ->
             "c:/usr/foo.erl" = filename:join(["A:","C:/usr","foo.erl"]),
             "c:usr/foo.erl" = filename:join(["A:","C:usr","foo.erl"]),
             "d:/foo" = filename:join([$D, $:, $/, []], "foo"),
+            "//" = filename:join("\\\\", ""),
+            "//foo" = filename:join("\\\\", "foo"),
+            "//foo/bar" = filename:join("\\\\", "foo\\\\bar"),
+            "//foo/bar/baz" = filename:join("\\\\foo", "bar\\\\baz"),
+            "//foo/bar/baz" = filename:join("\\\\foo", "bar\\baz"),
+            "//foo/bar/baz" = filename:join("\\\\foo\\bar", baz),
+            "//foo/\bar/baz" = filename:join("\\\\foo/\bar", baz),
+            "//foo/bar/baz" = filename:join("\\\\foo/bar", baz),
+            "//bar/baz" = filename:join("\\\\foo", "\\\\bar\\baz"),
+            "//bar/baz" = filename:join("\\\\foo", "//bar\\baz"),
+            "//bar/baz" = filename:join("\\\\foo", "//bar/baz"),
+            "//bar/baz" = filename:join("\\\\foo", "\\\\bar/baz"),
+            "//d/e/f/g" = filename:join("a//b/c", "//d//e/f/g"),
+            "//" = filename:join("//", ""),
+            "//foo" = filename:join("//", "foo"),
+            "//foo/bar" = filename:join("//", "foo\\\\bar"),
+            "//foo/bar/baz" = filename:join("//foo", "bar\\\\baz"),
+            "//foo/bar/baz" = filename:join("//foo", "bar\\baz"),
+            "//foo/bar/baz" = filename:join("//foo\\bar", baz),
+            "//foo/\bar/baz" = filename:join("//foo/\bar", baz),
+            "//foo/bar/baz" = filename:join("//foo/bar", baz),
+            "//bar/baz" = filename:join("//foo", "\\\\bar\\baz"),
+            "//bar/baz" = filename:join("//foo", "//bar\\baz"),
+            "//bar/baz" = filename:join("//foo", "//bar/baz"),
+            "//bar/baz" = filename:join("//foo", "\\\\bar/baz"),
             ok;
         _ ->
+            "/" = filename:join(["//"]),
+            "/d/e/f/g" = filename:join("a//b/c", "//d//e/f/g"),
             ok
     end.
 
@@ -404,6 +468,16 @@ split(Config) when is_list(Config) ->
                 filename:split("a:\\msdev\\include"),
             ["a:","msdev","include"] =
                 filename:split("a:msdev\\include"),
+            ["//","foo"] =
+                filename:split("\\\\foo"),
+            ["//","foo"] =
+                filename:split("//foo"),
+            ["//","foo","bar"] =
+                filename:split("\\\\foo\\\\bar"),
+            ["//","foo","baz"] =
+                filename:split("\\\\foo\\baz"),
+            ["//","foo","baz"] =
+                filename:split("//foo\\baz"),
             ok;
         _ ->
 	    ok
@@ -632,7 +706,6 @@ extension_bin(Config) when is_list(Config) ->
     
 join_bin(Config) when is_list(Config) ->
     <<"/">> = filename:join([<<"/">>]),
-    <<"/">> = filename:join([<<"//">>]),
     <<"usr/foo.erl">> = filename:join(<<"usr">>,<<"foo.erl">>),
     <<"/src/foo.erl">> = filename:join(usr, <<"/src/foo.erl">>),
     <<"/src/foo.erl">> = filename:join([<<"/src/">>,'foo.erl']),
@@ -644,7 +717,6 @@ join_bin(Config) when is_list(Config) ->
     <<"a/b/c/d/e/f/g">> = filename:join([<<"a//b/c/">>, <<"d//e/f/g">>]),
     <<"a/b/c/d/e/f/g">> = filename:join([<<"a//b/c">>, <<"d//e/f/g">>]),
     <<"/d/e/f/g">> = filename:join([<<"a//b/c">>, <<"/d//e/f/g">>]),
-    <<"/d/e/f/g">> = filename:join([<<"a//b/c">>, <<"//d//e/f/g">>]),
 
     <<"foo/bar">> = filename:join([$f,$o,$o,$/,[]], <<"bar">>),
 
@@ -697,6 +769,7 @@ join_bin(Config) when is_list(Config) ->
 
     case os:type() of
         {win32, _} ->
+            <<"//">> = filename:join([<<"//">>]),
             <<"d:/">> = filename:join([<<"D:/">>]),
             <<"d:/">> = filename:join([<<"D:\\">>]),
             <<"d:/abc">> = filename:join([<<"D:/">>, <<"abc">>]),
@@ -710,8 +783,35 @@ join_bin(Config) when is_list(Config) ->
             <<"c:/usr/foo.erl">> = filename:join([<<"A:">>,<<"C:/usr">>,<<"foo.erl">>]),
             <<"c:usr/foo.erl">> = filename:join([<<"A:">>,<<"C:usr">>,<<"foo.erl">>]),
             <<"d:/foo">> = filename:join([$D, $:, $/, []], <<"foo">>),
+            <<"//">> = filename:join(<<"\\\\">>, <<"">>),
+            <<"//foo">> = filename:join(<<"\\\\">>, <<"foo">>),
+            <<"//foo/bar">> = filename:join(<<"\\\\">>, <<"foo\\\\bar">>),
+            <<"//foo/bar/baz">> = filename:join(<<"\\\\foo">>, <<"bar\\\\baz">>),
+            <<"//bar/baz">> = filename:join(<<"\\\\foo">>, <<"\\\\bar\\baz">>),
+            <<"//foo/bar/baz">> = filename:join(<<"\\\\foo\\bar">>, baz),
+            <<"//foo/\bar/baz">> = filename:join(<<"\\\\foo/\bar">>, baz),
+            <<"//foo/bar/baz">> = filename:join(<<"\\\\foo/bar">>, baz),
+            <<"//bar/baz">> = filename:join(<<"\\\\foo">>, <<"\\\\bar\\baz">>),
+            <<"//bar/baz">> = filename:join(<<"\\\\foo">>, <<"//bar\\baz">>),
+            <<"//bar/baz">> = filename:join(<<"\\\\foo">>, <<"//bar/baz">>),
+            <<"//bar/baz">> = filename:join(<<"\\\\foo">>, <<"\\\\bar/baz">>),
+            <<"//d/e/f/g">> = filename:join([<<"a//b/c">>, <<"//d//e/f/g">>]),
+            <<"//">> = filename:join(<<"//">>, <<"">>),
+            <<"//foo">> = filename:join(<<"//">>, <<"foo">>),
+            <<"//foo/bar">> = filename:join(<<"//">>, <<"foo\\\\bar">>),
+            <<"//foo/bar/baz">> = filename:join(<<"//foo">>, <<"bar\\\\baz">>),
+            <<"//bar/baz">> = filename:join(<<"//foo">>, <<"\\\\bar\\baz">>),
+            <<"//foo/bar/baz">> = filename:join(<<"//foo\\bar">>, baz),
+            <<"//foo/\bar/baz">> = filename:join(<<"//foo/\bar">>, baz),
+            <<"//foo/bar/baz">> = filename:join(<<"//foo/bar">>, baz),
+            <<"//bar/baz">> = filename:join(<<"//foo">>, <<"\\\\bar\\baz">>),
+            <<"//bar/baz">> = filename:join(<<"//foo">>, <<"//bar\\baz">>),
+            <<"//bar/baz">> = filename:join(<<"//foo">>, <<"//bar/baz">>),
+            <<"//bar/baz">> = filename:join(<<"//foo">>, <<"\\\\bar/baz">>),
             ok;
         _ ->
+            <<"/">> = filename:join([<<"//">>]),
+            <<"/d/e/f/g">> = filename:join([<<"a//b/c">>, <<"//d//e/f/g">>]),
             ok
     end.
 
@@ -758,6 +858,16 @@ split_bin(Config) when is_list(Config) ->
                 filename:split(<<"a:\\msdev\\include">>),
             [<<"a:">>,<<"msdev">>,<<"include">>] =
                 filename:split(<<"a:msdev\\include">>),
+            [<<"//">>,<<"foo">>] =
+                filename:split(<<"\\\\foo">>),
+            [<<"//">>,<<"foo">>] =
+                filename:split(<<"//foo">>),
+            [<<"//">>,<<"foo">>,<<"bar">>] =
+                filename:split(<<"\\\\foo\\\\bar">>),
+            [<<"//">>,<<"foo">>,<<"baz">>] =
+                filename:split(<<"\\\\foo\\baz">>),
+            [<<"//">>,<<"foo">>,<<"baz">>] =
+                filename:split(<<"//foo\\baz">>),
             ok;
         _ ->
             ok
@@ -1013,56 +1123,3 @@ basedir_xdg_def(Type,Home,Name) ->
                         Dir <- ["/usr/local/share/","/usr/share/"]];
         site_config -> [filename:join(["/etc/xdg",Name])]
     end.
-
-validate(Config) when is_list(Config) ->
-    true = filename:validate(blipp),
-    false = filename:validate('bli\0pp'),
-    false = filename:validate('blipp\0'),
-    true = filename:validate("blipp"),
-    false = filename:validate("bli"++[0]++"pp"),
-    false = filename:validate("blipp"++[0]),
-    true = filename:validate(["one ", blipp, "blopp"]),
-    false = filename:validate(["one ", 'bli\0pp', "blopp"]),
-    false = filename:validate(["one ", 'blipp\0', "blopp"]),
-    false = filename:validate(["one ", 'blipp', "blopp\0"]),
-    false = filename:validate([0]),
-    false = filename:validate([]),
-    false = filename:validate([[[]],[[[[],[[[[[[[[]]], '', [[[[[]]]]]]]]]]]]]]),
-    false = filename:validate([16#110000]),
-    false = filename:validate([16#110001]),
-    false = filename:validate([16#110000*2]),
-    case file:native_name_encoding() of
-        latin1 ->
-            true = filename:validate(lists:seq(1, 255)),
-            false = filename:validate([256]);
-        utf8 ->
-            true = filename:validate(lists:seq(1, 16#D7FF)),
-            true = filename:validate(lists:seq(16#E000, 16#FFFF)),
-            true = filename:validate([16#FFFF]),
-            case os:type() of
-                {win32, _} ->
-                    false = filename:validate([16#10000]),
-                    true = filename:validate(lists:seq(16#D800,16#DFFF));
-                _ ->
-                    true = filename:validate([16#10000]),
-                    true = filename:validate([16#10FFFF]),
-                    lists:foreach(fun (C) ->
-                                          false = filename:validate([C])
-                                  end,
-                                  lists:seq(16#D800,16#DFFF))
-            end
-                        
-    end,
-    true = filename:validate(<<1,17,255>>),
-    false = filename:validate(<<1,0,17,255>>),
-    false = filename:validate(<<1,17,255,0>>),
-    false = filename:validate(<<>>),
-    lists:foreach(fun (N) ->
-                          true = filename:validate(N)
-                  end,
-                  code:get_path()),
-    ok.
-
-            
-    
-
diff --git a/lib/stdlib/test/io_SUITE.erl b/lib/stdlib/test/io_SUITE.erl
index e2c73371cd..13929bdbb6 100644
--- a/lib/stdlib/test/io_SUITE.erl
+++ b/lib/stdlib/test/io_SUITE.erl
@@ -2138,8 +2138,8 @@ otp_14175(_Config) ->
     "#{}" = p(#{}, 1),
     "#{...}" = p(#{a => 1}, 1),
     "#{#{} => a}" = p(#{#{} => a}, 2),
-    "#{a => 1,...}" = p(#{a => 1, b => 2}, 2),
-    "#{a => 1,b => 2}" = p(#{a => 1, b => 2}, -1),
+    mt("#{a => 1,...}", p(#{a => 1, b => 2}, 2)),
+    mt("#{a => 1,b => 2}", p(#{a => 1, b => 2}, -1)),
 
     M = #{kaaaaaaaaaaaaaaaaaaa => v1,kbbbbbbbbbbbbbbbbbbb => v2,
           kccccccccccccccccccc => v3,kddddddddddddddddddd => v4,
diff --git a/lib/stdlib/test/maps_SUITE.erl b/lib/stdlib/test/maps_SUITE.erl
index 42e669a799..a75751b31d 100644
--- a/lib/stdlib/test/maps_SUITE.erl
+++ b/lib/stdlib/test/maps_SUITE.erl
@@ -30,6 +30,7 @@
 -export([t_update_with_3/1, t_update_with_4/1,
          t_get_3/1, t_filter_2/1,
          t_fold_3/1,t_map_2/1,t_size_1/1,
+         t_iterator_1/1,
          t_with_2/1,t_without_2/1]).
 
 %%-define(badmap(V,F,Args), {'EXIT', {{badmap,V}, [{maps,F,Args,_}|_]}}).
@@ -47,6 +48,7 @@ all() ->
     [t_update_with_3,t_update_with_4,
      t_get_3,t_filter_2,
      t_fold_3,t_map_2,t_size_1,
+     t_iterator_1,
      t_with_2,t_without_2].
 
 t_update_with_3(Config) when is_list(Config) ->
@@ -127,6 +129,8 @@ t_filter_2(Config) when is_list(Config) ->
     Pred2 = fun(K,V) -> is_list(K) andalso (V rem 2) =:= 0 end,
     #{a := 2,c := 4} = maps:filter(Pred1,M),
     #{"b" := 2,"c" := 4} = maps:filter(Pred2,M),
+    #{a := 2,c := 4} = maps:filter(Pred1,maps:iterator(M)),
+    #{"b" := 2,"c" := 4} = maps:filter(Pred2,maps:iterator(M)),
     %% error case
     ?badmap(a,filter,[_,a]) = (catch maps:filter(fun(_,_) -> ok end,id(a))),
     ?badarg(filter,[<<>>,#{}]) = (catch maps:filter(id(<<>>),#{})),
@@ -139,6 +143,8 @@ t_fold_3(Config) when is_list(Config) ->
     Tot0 = lists:sum(Vs),
     Tot1 = maps:fold(fun({k,_},V,A) -> A + V end, 0, M0),
     true = Tot0 =:= Tot1,
+    Tot2 = maps:fold(fun({k,_},V,A) -> A + V end, 0, maps:iterator(M0)),
+    true = Tot0 =:= Tot2,
 
     %% error case
     ?badmap(a,fold,[_,0,a]) = (catch maps:fold(fun(_,_,_) -> ok end,0,id(a))),
@@ -151,12 +157,48 @@ t_map_2(Config) when is_list(Config) ->
     #{ {k,1} := 1, {k,200} := 200} = M0,
     M1 = maps:map(fun({k,_},V) -> V + 42 end, M0),
     #{ {k,1} := 43, {k,200} := 242} = M1,
+    M2 = maps:map(fun({k,_},V) -> V + 42 end, maps:iterator(M0)),
+    #{ {k,1} := 43, {k,200} := 242} = M2,
 
     %% error case
     ?badmap(a,map,[_,a]) = (catch maps:map(fun(_,_) -> ok end, id(a))),
     ?badarg(map,[<<>>,#{}]) = (catch maps:map(id(<<>>),#{})),
     ok.
 
+t_iterator_1(Config) when is_list(Config) ->
+
+    %% Small map test
+    M0 = #{ a => 1, b => 2 },
+    I0 = maps:iterator(M0),
+    {K1,V1,I1} = maps:next(I0),
+    {K2,V2,I2} = maps:next(I1),
+    none = maps:next(I2),
+
+    KVList = lists:sort([{K1,V1},{K2,V2}]),
+    KVList = lists:sort(maps:to_list(M0)),
+
+    %% Large map test
+
+    Vs2 = lists:seq(1,200),
+    M2 = maps:from_list([{{k,I},I}||I<-Vs2]),
+    KVList2 = lists:sort(iter_kv(maps:iterator(M2))),
+    KVList2 = lists:sort(maps:to_list(M2)),
+
+    %% Larger map test
+
+    Vs3 = lists:seq(1,10000),
+    M3 = maps:from_list([{{k,I},I}||I<-Vs3]),
+    KVList3 = lists:sort(iter_kv(maps:iterator(M3))),
+    KVList3 = lists:sort(maps:to_list(M3)),
+    ok.
+
+iter_kv(I) ->
+    case maps:next(I) of
+        none ->
+            [];
+        {K,V,NI} ->
+            [{K,V} | iter_kv(NI)]
+    end.
 
 t_size_1(Config) when is_list(Config) ->
       0 = maps:size(#{}),
diff --git a/lib/stdlib/test/property_test/README b/lib/stdlib/test/property_test/README
new file mode 100644
index 0000000000..57602bf719
--- /dev/null
+++ b/lib/stdlib/test/property_test/README
@@ -0,0 +1,12 @@
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%                                                             %%%
+%%%                       WARNING                               %%%
+%%%                                                             %%%
+%%% This is experimental code which may be changed or removed   %%%
+%%%               anytime without any warning.                  %%%
+%%%                                                             %%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+The test in this directory are written assuming that the user has a QuickCheck license.  They are to be run manually.  Some may be possible to be run with other tools, e.g. PropEr.
+
diff --git a/lib/stdlib/test/property_test/uri_string_recompose.erl b/lib/stdlib/test/property_test/uri_string_recompose.erl
new file mode 100644
index 0000000000..e51a671172
--- /dev/null
+++ b/lib/stdlib/test/property_test/uri_string_recompose.erl
@@ -0,0 +1,361 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2008-2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(uri_string_recompose).
+
+-compile(export_all).
+
+-proptest(eqc).
+-proptest([triq,proper]).
+
+-ifndef(EQC).
+-ifndef(PROPER).
+-ifndef(TRIQ).
+-define(EQC,true).
+-endif.
+-endif.
+-endif.
+
+-ifdef(EQC).
+-include_lib("eqc/include/eqc.hrl").
+-define(MOD_eqc,eqc).
+
+-else.
+-ifdef(PROPER).
+-include_lib("proper/include/proper.hrl").
+-define(MOD_eqc,proper).
+
+-else.
+-ifdef(TRIQ).
+-define(MOD_eqc,triq).
+-include_lib("triq/include/triq.hrl").
+
+-endif.
+-endif.
+-endif.
+
+
+-define(STRING_REST(MatchStr, Rest), <<MatchStr/utf8, Rest/binary>>).
+
+-define(SCHEME, {scheme, scheme()}).
+-define(USER, {userinfo, unicode()}).
+-define(HOST, {host, host_map()}).
+-define(PORT, {port, port()}).
+-define(PATH_ABE, {path, path_abempty_map()}).
+-define(PATH_ABS, {path, path_absolute_map()}).
+-define(PATH_NOS, {path, path_noscheme_map()}).
+-define(PATH_ROO, {path, path_rootless_map()}).
+-define(PATH_EMP, {path, path_empty_map()}).
+-define(QUERY, {query, query_map()}).
+-define(FRAGMENT, {fragment, fragment_map()}).
+
+
+%%%========================================================================
+%%% Properties
+%%%========================================================================
+
+prop_recompose() ->
+    ?FORALL(Map, map(),
+            Map =:= uri_string:parse(uri_string:recompose(Map))
+           ).
+
+%% Stats
+prop_map_key_length_collect() ->
+    ?FORALL(List, map(),
+            collect(length(maps:keys(List)), true)).
+
+prop_map_collect() ->
+    ?FORALL(List, map(),
+            collect(lists:sort(maps:keys(List)), true)).
+
+prop_scheme_collect() ->
+    ?FORALL(List, scheme(),
+            collect(length(List), true)).
+
+
+%%%========================================================================
+%%% Generators
+%%%========================================================================
+
+map() ->
+    ?LET(Gen, comp_proplist(), proplist_to_map(Gen)).
+
+comp_proplist() ->
+    frequency([
+               {2, [?SCHEME,?PATH_ABS]},
+               {2, [?SCHEME,?PATH_ROO]},
+               {2, [?SCHEME,?PATH_EMP]},
+               {2, [?SCHEME,?HOST,?PATH_ABE]},
+               {2, [?SCHEME,?USER,?HOST,?PATH_ABE]},
+               {2, [?SCHEME,?HOST,?PORT,?PATH_ABE]},
+               {2, [?SCHEME,?USER,?HOST,?PORT,?PATH_ABE]},
+
+               {2, [?PATH_ABS]},
+               {2, [?PATH_NOS]},
+               {2, [?PATH_EMP]},
+               {2, [?HOST,?PATH_ABE]},
+               {2, [?USER,?HOST,?PATH_ABE]},
+               {2, [?HOST,?PORT,?PATH_ABE]},
+               {2, [?USER,?HOST,?PORT,?PATH_ABE]},
+
+
+               {2, [?SCHEME,?PATH_ABS,?QUERY]},
+               {2, [?SCHEME,?PATH_ROO,?QUERY]},
+               {2, [?SCHEME,?PATH_EMP,?QUERY]},
+               {2, [?SCHEME,?HOST,?PATH_ABE,?QUERY]},
+               {2, [?SCHEME,?USER,?HOST,?PATH_ABE,?QUERY]},
+               {2, [?SCHEME,?HOST,?PORT,?PATH_ABE,?QUERY]},
+               {2, [?SCHEME,?USER,?HOST,?PORT,?PATH_ABE,?QUERY]},
+
+               {2, [?PATH_ABS,?QUERY]},
+               {2, [?PATH_NOS,?QUERY]},
+               {2, [?PATH_EMP,?QUERY]},
+               {2, [?HOST,?PATH_ABE,?QUERY]},
+               {2, [?USER,?HOST,?PATH_ABE,?QUERY]},
+               {2, [?HOST,?PORT,?PATH_ABE,?QUERY]},
+               {2, [?USER,?HOST,?PORT,?PATH_ABE,?QUERY]},
+
+
+               {2, [?SCHEME,?PATH_ABS,?FRAGMENT]},
+               {2, [?SCHEME,?PATH_ROO,?FRAGMENT]},
+               {2, [?SCHEME,?PATH_EMP,?FRAGMENT]},
+               {2, [?SCHEME,?HOST,?PATH_ABE,?FRAGMENT]},
+               {2, [?SCHEME,?USER,?HOST,?PATH_ABE,?FRAGMENT]},
+               {2, [?SCHEME,?HOST,?PORT,?PATH_ABE,?FRAGMENT]},
+               {2, [?SCHEME,?USER,?HOST,?PORT,?PATH_ABE,?FRAGMENT]},
+
+               {2, [?PATH_ABS,?FRAGMENT]},
+               {2, [?PATH_NOS,?FRAGMENT]},
+               {2, [?PATH_EMP,?FRAGMENT]},
+               {2, [?HOST,?PATH_ABE,?FRAGMENT]},
+               {2, [?USER,?HOST,?PATH_ABE,?FRAGMENT]},
+               {2, [?HOST,?PORT,?PATH_ABE,?FRAGMENT]},
+               {2, [?USER,?HOST,?PORT,?PATH_ABE,?FRAGMENT]},
+
+
+               {2, [?SCHEME,?PATH_ABS,?QUERY,?FRAGMENT]},
+               {2, [?SCHEME,?PATH_ROO,?QUERY,?FRAGMENT]},
+               {2, [?SCHEME,?PATH_EMP,?QUERY,?FRAGMENT]},
+               {2, [?SCHEME,?HOST,?PATH_ABE,?QUERY,?FRAGMENT]},
+               {2, [?SCHEME,?USER,?HOST,?PATH_ABE,?QUERY,?FRAGMENT]},
+               {2, [?SCHEME,?HOST,?PORT,?PATH_ABE,?QUERY,?FRAGMENT]},
+               {2, [?SCHEME,?USER,?HOST,?PORT,?PATH_ABE,?QUERY,?FRAGMENT]},
+
+               {2, [?PATH_ABS,?QUERY,?FRAGMENT]},
+               {2, [?PATH_NOS,?QUERY,?FRAGMENT]},
+               {2, [?PATH_EMP,?QUERY,?FRAGMENT]},
+               {2, [?HOST,?PATH_ABE,?QUERY,?FRAGMENT]},
+               {2, [?USER,?HOST,?PATH_ABE,?QUERY,?FRAGMENT]},
+               {2, [?HOST,?PORT,?PATH_ABE,?QUERY,?FRAGMENT]},
+               {2, [?USER,?HOST,?PORT,?PATH_ABE,?QUERY,?FRAGMENT]}
+              ]).
+
+
+%%-------------------------------------------------------------------------
+%% Path
+%%-------------------------------------------------------------------------
+path_abempty_map() ->
+    frequency([{90, path_abe_map()},
+               {10, path_empty_map()}]).
+
+path_abe_map() ->
+    ?SIZED(Length, path_abe_map(Length, [])).
+%%
+path_abe_map(0, Segments) ->
+    ?LET(Gen, Segments, lists:append(Gen));
+path_abe_map(N, Segments) ->
+    path_abe_map(N-1, [slash(),segment()|Segments]).
+
+
+path_absolute_map() ->
+    ?SIZED(Length, path_absolute_map(Length, [])).
+%%
+path_absolute_map(0, Segments) ->
+    ?LET(Gen, [slash(),segment_nz()|Segments], lists:append(Gen));
+path_absolute_map(N, Segments) ->
+    path_absolute_map(N-1, [slash(),segment()|Segments]).
+
+
+path_noscheme_map() ->
+    ?SIZED(Length, path_noscheme_map(Length, [])).
+%%
+path_noscheme_map(0, Segments) ->
+    ?LET(Gen, [segment_nz_nc()|Segments], lists:append(Gen));
+path_noscheme_map(N, Segments) ->
+    path_noscheme_map(N-1, [slash(),segment()|Segments]).
+
+path_rootless_map() ->
+    ?SIZED(Length, path_rootless_map(Length, [])).
+%%
+path_rootless_map(0, Segments) ->
+    ?LET(Gen, [segment_nz()|Segments], lists:append(Gen));
+path_rootless_map(N, Segments) ->
+    path_rootless_map(N-1, [slash(),segment()|Segments]).
+
+
+segment_nz() ->
+    non_empty(segment()).
+
+segment_nz_nc() ->
+    non_empty(list(frequency([{30, unreserved()},
+                              {10, sub_delims()},
+                              {10, unicode_char()},
+                              {5, oneof([$@])}
+                             ]))).
+
+
+segment() ->
+    list(frequency([{30, unreserved()},
+                    {10, sub_delims()},
+                    {10, unicode_char()},
+                    {5, oneof([$:, $@])}
+                   ])).
+
+slash() ->
+    "/".
+
+path_empty_map() ->
+    "".
+
+
+%%-------------------------------------------------------------------------
+%% Path
+%%-------------------------------------------------------------------------
+host_map() ->
+    frequency([{30, reg_name()},
+               {30, ip_address()}
+              ]).
+
+
+reg_name() ->
+    list(frequency([{30, alpha()},
+                              {10, sub_delims()},
+                              {10, unicode_char()}
+                             ])).
+
+ip_address() ->
+    oneof(["127.0.0.1", "::127.0.0.1",
+           "2001:0db8:0000:0000:0000:0000:1428:07ab",
+           "2001:0db8:0000:0000:0000::1428:07ab",
+           "2001:0db8:0:0:0:0:1428:07ab",
+           "2001:0db8:0::0:1428:07ab"]).
+
+%% Generating only reg-names
+host_uri() ->
+    non_empty(list(frequency([{30, unreserved()},
+                              {10, sub_delims()},
+                              {10, pct_encoded()}
+                             ]))).
+
+%%-------------------------------------------------------------------------
+%% Port, Query, Fragment
+%%-------------------------------------------------------------------------
+port() ->
+    frequency([{10, undefined},
+               {10, range(1,65535)}
+              ]).
+
+query_map() ->
+    unicode().
+
+
+query_uri() ->
+    [$?| non_empty(list(frequency([{20, pchar()},
+                                   {5, oneof([$/, $?])} % punctuation
+                                  ])))].
+
+fragment_map() ->
+    unicode().
+
+fragment_uri() ->
+    [$?| non_empty(list(frequency([{20, pchar()},
+                                   {5, oneof([$/, $?])} % punctuation
+                                  ])))].
+
+
+%%-------------------------------------------------------------------------
+%% Scheme
+%%-------------------------------------------------------------------------
+scheme() ->
+    ?SIZED(Length, scheme_start(Length, [])).
+%%
+scheme_start(0, L) ->
+    ?LET(Gen, L, lists:reverse(Gen));
+scheme_start(N, L) ->
+    scheme(N-1,[alpha()|L]).
+
+scheme(0, L) ->
+    ?LET(Gen, L, lists:reverse(Gen));
+scheme(N, L) ->
+    scheme(N-1, [scheme_char()|L]).
+
+
+%%-------------------------------------------------------------------------
+%% Misc
+%%-------------------------------------------------------------------------
+unicode() ->
+    list(frequency([{20, alpha()},                    % alpha
+               {10, digit()},                    % digit
+               {10, unicode_char()}              % unicode
+              ])).
+
+scheme_char() ->
+    frequency([{20, alpha()},                    % alpha
+               {20, digit()},                    % digit
+               {5, oneof([$+, $-, $.])}          % punctuation
+              ]).
+
+sub_delims() ->
+    oneof([$!, $$, $&, $', $(, $),
+           $*, $+, $,,$;, $=]).
+
+pchar() ->
+    frequency([{20, unreserved()},
+               {5, pct_encoded()},
+               {5, sub_delims()},
+               {1, oneof([$:, $@])}              % punctuation
+              ]).
+
+unreserved() ->
+    frequency([{20, alpha()},
+               {5, digit()},
+               {1, oneof([$-, $., $_, $~])}      % punctuation
+              ]).
+
+unicode_char() ->
+    range(913, 1023).
+
+alpha() ->
+    frequency([{20, range($a, $z)},              % letters
+               {20, range($A, $Z)}]).            % letters
+
+digit() ->
+    range($0, $9).                               % numbers
+
+pct_encoded() ->
+    oneof(["%C3%A4", "%C3%A5", "%C3%B6"]).
+
+
+%%%========================================================================
+%%% Helpers
+%%%========================================================================
+proplist_to_map(L) ->
+    lists:foldl(fun({K,V},M) -> M#{K => V};
+                  (_,M) -> M
+               end, #{}, L).
diff --git a/lib/stdlib/test/qlc_SUITE.erl b/lib/stdlib/test/qlc_SUITE.erl
index 5e9e03e410..8f8a0f6e73 100644
--- a/lib/stdlib/test/qlc_SUITE.erl
+++ b/lib/stdlib/test/qlc_SUITE.erl
@@ -1695,28 +1695,7 @@ sort(Config) when is_list(Config) ->
           [true || I <- lists:seq(1, 50000), not ets:insert(E, {I, I})],
           H = qlc:q([{X,Y} || X <- [a,b], Y <- qlc:sort(ets:table(E))]),
           100000 = length(qlc:e(H)),
-          ets:delete(E)">>,
-
-       begin
-       TmpDir = ?privdir,
-       [<<"TE = process_flag(trap_exit, true),
-           E = ets:new(foo, []),
-           [true || I <- lists:seq(1, 50000), not ets:insert(E, {I, I})],
-           Ports = erlang:ports(),
-           H = qlc:q([{X,Y} || X <- [a,b], 
-                               begin
-                                   [P] = erlang:ports() -- Ports,
-                                   exit(P, port_exit),
-                                   true
-                               end,
-                               Y <- qlc:sort(ets:table(E),
-                                             [{tmpdir,\"">>, 
-                                               TmpDir, <<"\"}])]),
-           {error, qlc, {file_error, _, _}} = (catch qlc:e(H)),
-           receive {'EXIT', _, port_exit} -> ok end,
-           ets:delete(E),
-           process_flag(trap_exit, TE)">>]
-       end
+          ets:delete(E)">>
 
         ],
     run(Config, Ts),
@@ -7871,7 +7850,7 @@ run_test(Config, Extra, {cres, Body, Opts, ExpectedCompileReturn}) ->
     {module, _} = code:load_abs(AbsFile, Mod),
 
     Ms0 = erlang:process_info(self(),messages),
-    Before = {{get(), lists:sort(ets:all()), Ms0}, pps()},
+    Before = {{lget(), lists:sort(ets:all()), Ms0}, pps()},
 
     %% Prepare the check that the qlc module does not call qlc_pt.
     _ = [unload_pt() || {file, Name} <- [code:is_loaded(qlc_pt)], 
@@ -7903,7 +7882,7 @@ run_test(Config, Extra, Body) ->
 
 wait_for_expected(R, {Strict0,PPS0}=Before, SourceFile, Wait) ->
     Ms = erlang:process_info(self(),messages),
-    After = {_,PPS1} = {{get(), lists:sort(ets:all()), Ms}, pps()},
+    After = {_,PPS1} = {{lget(), lists:sort(ets:all()), Ms}, pps()},
     case {R, After} of
         {ok, Before} ->
             ok;
@@ -7931,6 +7910,18 @@ wait_for_expected(R, {Strict0,PPS0}=Before, SourceFile, Wait) ->
             expected({ok,Before}, {R,After}, SourceFile)
     end.
 
+%% The qlc modules uses the process dictionary for storing names of files.
+lget() ->
+    lists:sort([T || {K, _} = T <- get(), is_qlc_key(K)]).
+
+%% Copied from the qlc module.
+-define(LCACHE_FILE(Ref), {Ref, '$_qlc_cache_tmpfiles_'}).
+-define(MERGE_JOIN_FILE, '$_qlc_merge_join_tmpfiles_').
+
+is_qlc_key(?LCACHE_FILE(_)) -> true;
+is_qlc_key(?MERGE_JOIN_FILE) -> true;
+is_qlc_key(_) -> false.
+
 unload_pt() ->
     erlang:garbage_collect(), % get rid of references to qlc_pt...
     _ = code:purge(qlc_pt),
diff --git a/lib/stdlib/test/stdlib_bench_SUITE.erl b/lib/stdlib/test/stdlib_bench_SUITE.erl
index 8670e7029c..2a9981bb9e 100644
--- a/lib/stdlib/test/stdlib_bench_SUITE.erl
+++ b/lib/stdlib/test/stdlib_bench_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2012-2016. All Rights Reserved.
+%% Copyright Ericsson AB 2012-2017. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -28,13 +28,20 @@ suite() -> [{ct_hooks,[{ts_install_cth,[{nodenames,2}]}]}].
 
 
 all() ->
-    [{group,unicode}].
+    [{group,unicode}, {group,base64}].
 
 groups() ->
     [{unicode,[{repeat,5}],
       [norm_nfc_list, norm_nfc_deep_l, norm_nfc_binary,
        string_lexemes_list, string_lexemes_binary
-      ]}].
+      ]},
+     {base64,[{repeat,5}],
+      [decode_binary, decode_binary_to_string,
+       decode_list, decode_list_to_string,
+       encode_binary, encode_binary_to_string,
+       encode_list, encode_list_to_string,
+       mime_binary_decode, mime_binary_decode_to_string,
+       mime_list_decode, mime_list_decode_to_string]}].
 
 init_per_group(_GroupName, Config) ->
     Config.
@@ -105,3 +112,97 @@ norm_data(Config) ->
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+decode_binary(_Config) ->
+    test(decode, encoded_binary()).
+
+decode_binary_to_string(_Config) ->
+    test(decode_to_string, encoded_binary()).
+
+decode_list(_Config) ->
+    test(decode, encoded_list()).
+
+decode_list_to_string(_Config) ->
+    test(decode_to_string, encoded_list()).
+
+encode_binary(_Config) ->
+    test(encode, binary()).
+
+encode_binary_to_string(_Config) ->
+    test(encode_to_string, binary()).
+
+encode_list(_Config) ->
+    test(encode, list()).
+
+encode_list_to_string(_Config) ->
+    test(encode_to_string, list()).
+
+mime_binary_decode(_Config) ->
+    test(mime_decode, encoded_binary()).
+
+mime_binary_decode_to_string(_Config) ->
+    test(mime_decode_to_string, encoded_binary()).
+
+mime_list_decode(_Config) ->
+    test(mime_decode, encoded_list()).
+
+mime_list_decode_to_string(_Config) ->
+    test(mime_decode_to_string, encoded_list()).
+
+-define(SIZE, 10000).
+-define(N, 1000).
+
+encoded_binary() ->
+    list_to_binary(encoded_list()).
+
+encoded_list() ->
+    L = random_byte_list(round(?SIZE*0.75)),
+    base64:encode_to_string(L).
+
+binary() ->
+    list_to_binary(list()).
+
+list() ->
+    random_byte_list(?SIZE).
+
+test(Func, Data) ->
+    F = fun() -> loop(?N, Func, Data) end,
+    {Time, ok} = timer:tc(fun() -> lspawn(F) end),
+    report_base64(Time).
+
+loop(0, _F, _D) -> garbage_collect(), ok;
+loop(N, F, D) ->
+    _ = base64:F(D),
+    loop(N - 1, F, D).
+
+lspawn(Fun) ->
+    {Pid, Ref} = spawn_monitor(fun() -> exit(Fun()) end),
+    receive
+        {'DOWN', Ref, process, Pid, Rep} -> Rep
+    end.
+
+report_base64(Time) ->
+    Tps = round((?N*1000000)/Time),
+    ct_event:notify(#event{name = benchmark_data,
+                           data = [{suite, "stdlib_base64"},
+                                   {value, Tps}]}),
+    Tps.
+
+%% Copied from base64_SUITE.erl.
+
+random_byte_list(N) ->
+    random_byte_list(N, []).
+
+random_byte_list(0, Acc) ->
+    Acc;
+random_byte_list(N, Acc) ->
+    random_byte_list(N-1, [rand:uniform(255)|Acc]).
+
+make_big_binary(N) ->
+    list_to_binary(mbb(N, [])).
+
+mbb(N, Acc) when N > 256 ->
+    B = list_to_binary(lists:seq(0, 255)),
+    mbb(N - 256, [B | Acc]);
+mbb(N, Acc) ->
+    B = list_to_binary(lists:seq(0, N-1)),
+    lists:reverse(Acc, B).
diff --git a/lib/stdlib/test/string_SUITE.erl b/lib/stdlib/test/string_SUITE.erl
index 05f18ef238..d02a6eac0a 100644
--- a/lib/stdlib/test/string_SUITE.erl
+++ b/lib/stdlib/test/string_SUITE.erl
@@ -48,6 +48,7 @@
 
 %% Run tests when debugging them
 -export([debug/0, time_func/4]).
+-compile([nowarn_deprecated_function]).
 
 suite() ->
     [{ct_hooks,[ts_install_cth]},
@@ -92,14 +93,11 @@ end_per_testcase(_Case, _Config) ->
     ok.
 
 debug() ->
-    Config = [{data_dir, ?MODULE_STRING++"_data"}],
+    Config = [{data_dir, "./" ++ ?MODULE_STRING++"_data"}],
     [io:format("~p:~p~n",[Test,?MODULE:Test(Config)]) ||
         {_,Tests} <- groups(), Test <- Tests].
 
 -define(TEST(B,C,D), test(?LINE,?FUNCTION_NAME,B,C,D, true)).
--define(TEST_EQ(B,C,D),
-        test(?LINE,?FUNCTION_NAME,B,C,D, true),
-        test(?LINE,?FUNCTION_NAME,hd(C),[B|tl(C),D, true)).
 
 -define(TEST_NN(B,C,D),
         test(?LINE,?FUNCTION_NAME,B,C,D, false),
@@ -294,6 +292,7 @@ trim(_) ->
     ?TEST(["..h", ".e", <<"j..">>], [both, ". "], "h.ej"),
     ?TEST(["..h", <<".ejsa"/utf8>>, "n.."], [both, ". "], "h.ejsan"),
     %% Test that it behaves with graphemes (i.e. nfd tests are the hard part)
+    ?TEST([1013,101,778,101,101], [trailing, [101]], [1013,101,778]),
     ?TEST("aaåaa", [both, "a"], "å"),
     ?TEST(["aaa",778,"äöoo"], [both, "ao"], "åäö"),
     ?TEST([<<"aaa">>,778,"äöoo"], [both, "ao"], "åäö"),
@@ -353,6 +352,7 @@ take(_) ->
     ?TEST([<<>>,<<"..">>, " h.ej", <<" ..">>], [Chars, true, leading], {".. ", "h.ej .."}),
     ?TEST(["..h", <<".ejsa"/utf8>>, "n.."], [Chars, true, leading], {"..", "h.ejsan.."}),
     %% Test that it behaves with graphemes (i.e. nfd tests are the hard part)
+    ?TEST([101,778], [[[101, 779]], true], {[101,778], []}),
     ?TEST(["aaee",778,"äöoo"], [[[$e,778]], true, leading], {"aae", [$e,778|"äöoo"]}),
     ?TEST([<<"aae">>,778,"äöoo"], [[[$e,778]],true,leading], {"aa", [$e,778|"äöoo"]}),
     ?TEST([<<"e">>,778,"åäöe", <<778/utf8>>], [[[$e,778]], true, leading], {[], [$e,778]++"åäöe"++[778]}),
@@ -713,29 +713,123 @@ nth_lexeme(_) ->
 
 
 meas(Config) ->
+    Parent = self(),
+    Exec = fun() ->
+                   DataDir0 = proplists:get_value(data_dir, Config),
+                   DataDir = filename:join(lists:droplast(filename:split(DataDir0))),
+                   case proplists:get_value(profile, Config, false) of
+                       false ->
+                           do_measure(DataDir);
+                       eprof ->
+                           eprof:profile(fun() -> do_measure(DataDir) end, [set_on_spawn]),
+                           eprof:stop_profiling(),
+                           eprof:analyze(),
+                           eprof:stop()
+                   end,
+                   Parent ! {test_done, self()},
+                   normal
+           end,
+    ct:timetrap({minutes,2}),
     case ct:get_timetrap_info() of
         {_,{_,Scale}} when Scale > 1 ->
             {skip,{will_not_run_in_debug,Scale}};
-        _ -> % No scaling
-            DataDir = proplists:get_value(data_dir, Config),
-            TestDir = filename:dirname(string:trim(DataDir, trailing, "/")),
-            do_measure(TestDir)
+        _ -> % No scaling, run at most 1.5 min
+            Tester = spawn(Exec),
+            receive {test_done, Tester} -> ok
+            after 90000 ->
+                    io:format("Timelimit reached stopping~n",[]),
+                    exit(Tester, die)
+            end,
+            ok
     end.
 
-do_measure(TestDir) ->
-    File =  filename:join(TestDir, ?MODULE_STRING ++ ".erl"),
+do_measure(DataDir) ->
+    File =  filename:join([DataDir,"unicode_util_SUITE_data","NormalizationTest.txt"]),
     io:format("File ~s ",[File]),
     {ok, Bin} = file:read_file(File),
     io:format("~p~n",[byte_size(Bin)]),
     Do = fun(Name, Func, Mode) ->
-                 {N, Mean, Stddev, _} = time_func(Func, Mode, Bin, 50),
-                 io:format("~10w ~6w ~6.2fms ±~4.2fms #~.2w gc included~n",
+                 {N, Mean, Stddev, _} = time_func(Func, Mode, Bin, 20),
+                 io:format("~15w ~6w ~6.2fms ±~5.2fms #~.2w gc included~n",
                            [Name, Mode, Mean/1000, Stddev/1000, N])
          end,
+    Do2 = fun(Name, Func, Mode) ->
+                  {N, Mean, Stddev, _} = time_func(Func, binary, <<>>, 20),
+                  io:format("~15w ~6w ~6.2fms ±~5.2fms #~.2w gc included~n",
+                            [Name, Mode, Mean/1000, Stddev/1000, N])
+          end,
     io:format("----------------------~n"),
-    Do(tokens, fun(Str) -> string:tokens(Str, [$\n,$\r]) end, list),
+
+    Do(old_tokens, fun(Str) -> string:tokens(Str, [$\n,$\r]) end, list),
     Tokens = {lexemes, fun(Str) -> string:lexemes(Str, [$\n,$\r]) end},
     [Do(Name,Fun,Mode) || {Name,Fun} <- [Tokens], Mode <- [list, binary]],
+
+    S0 = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxy.....",
+    S0B = <<"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxy.....">>,
+    Do2(old_strip_l, repeat(fun() -> string:strip(S0, left, $x) end), list),
+    Do2(trim_l,  repeat(fun() -> string:trim(S0, leading, [$x]) end), list),
+    Do2(trim_l,  repeat(fun() -> string:trim(S0B, leading, [$x]) end), binary),
+    Do2(old_strip_r, repeat(fun() -> string:strip(S0, right, $.) end), list),
+    Do2(trim_t,  repeat(fun() -> string:trim(S0, trailing, [$.]) end), list),
+    Do2(trim_t,  repeat(fun() -> string:trim(S0B, trailing, [$.]) end), binary),
+
+    Do2(old_chr_sub, repeat(fun() -> string:sub_string(S0, string:chr(S0, $.)) end), list),
+    Do2(old_str_sub, repeat(fun() -> string:sub_string(S0, string:str(S0, [$.])) end), list),
+    Do2(find, repeat(fun() -> string:find(S0, [$.]) end), list),
+    Do2(find, repeat(fun() -> string:find(S0B, [$.]) end), binary),
+    Do2(old_str_sub2, repeat(fun() -> N = string:str(S0, "xy.."),
+                        {string:sub_string(S0,1,N), string:sub_string(S0,N+4)} end), list),
+    Do2(split, repeat(fun() -> string:split(S0, "xy..") end), list),
+    Do2(split, repeat(fun() -> string:split(S0B, "xy..") end), binary),
+
+    Do2(old_rstr_sub, repeat(fun() -> string:sub_string(S0, string:rstr(S0, [$y])) end), list),
+    Do2(find_t, repeat(fun() -> string:find(S0, [$y], trailing) end), list),
+    Do2(find_t, repeat(fun() -> string:find(S0B, [$y], trailing) end), binary),
+    Do2(old_rstr_sub2, repeat(fun() -> N = string:rstr(S0, "y.."),
+                         {string:sub_string(S0,1,N), string:sub_string(S0,N+3)} end), list),
+    Do2(split_t, repeat(fun() -> string:split(S0, "y..", trailing) end), list),
+    Do2(split_t, repeat(fun() -> string:split(S0B, "y..", trailing) end), binary),
+
+    Do2(old_span, repeat(fun() -> N=string:span(S0, [$x, $y]),
+                                  {string:sub_string(S0,1,N),string:sub_string(S0,N+1)}
+                         end), list),
+    Do2(take, repeat(fun() -> string:take(S0, [$x, $y]) end), list),
+    Do2(take, repeat(fun() -> string:take(S0B, [$x, $y]) end), binary),
+
+    Do2(old_cspan, repeat(fun() -> N=string:cspan(S0, [$.,$y]),
+                                   {string:sub_string(S0,1,N),string:sub_string(S0,N+1)}
+                          end), list),
+    Do2(take_c, repeat(fun() -> string:take(S0, [$.,$y], true) end), list),
+    Do2(take_c, repeat(fun() -> string:take(S0B, [$.,$y], true) end), binary),
+
+    Do2(old_substr, repeat(fun() -> string:substr(S0, 21, 15) end), list),
+    Do2(slice, repeat(fun() -> string:slice(S0, 20, 15) end), list),
+    Do2(slice, repeat(fun() -> string:slice(S0B, 20, 15) end), binary),
+
+    io:format("--~n",[]),
+    NthTokens = {nth_lexemes, fun(Str) -> string:nth_lexeme(Str, 18000, [$\n,$\r]) end},
+    [Do(Name,Fun,Mode) || {Name,Fun} <- [NthTokens], Mode <- [list, binary]],
+    Do2(take_t, repeat(fun() -> string:take(S0, [$.,$y], false, trailing) end), list),
+    Do2(take_t, repeat(fun() -> string:take(S0B, [$.,$y], false, trailing) end), binary),
+    Do2(take_tc, repeat(fun() -> string:take(S0, [$x], true, trailing) end), list),
+    Do2(take_tc, repeat(fun() -> string:take(S0B, [$x], true, trailing) end), binary),
+
+    Length = {length, fun(Str) -> string:length(Str) end},
+    [Do(Name,Fun,Mode) || {Name,Fun} <- [Length], Mode <- [list, binary]],
+
+    Reverse = {reverse, fun(Str) -> string:reverse(Str) end},
+    [Do(Name,Fun,Mode) || {Name,Fun} <- [Reverse], Mode <- [list, binary]],
+
+    ok.
+
+repeat(F) ->
+    fun(_) -> repeat_1(F,20000) end.
+
+repeat_1(F, N) when N > 0 ->
+    F(),
+    repeat_1(F, N-1);
+repeat_1(_, _) ->
+    erlang:garbage_collect(),
     ok.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -865,8 +959,6 @@ check_types_1({list, _},{list, undefined}) ->
     ok;
 check_types_1({list, _},{list, codepoints}) ->
     ok;
-check_types_1({list, _},{list, {list, codepoints}}) ->
-    ok;
 check_types_1({list, {list, _}},{list, {list, codepoints}}) ->
     ok;
 check_types_1(mixed,_) ->
diff --git a/lib/stdlib/test/supervisor_1.erl b/lib/stdlib/test/supervisor_1.erl
index 419026749b..c3ccacc587 100644
--- a/lib/stdlib/test/supervisor_1.erl
+++ b/lib/stdlib/test/supervisor_1.erl
@@ -42,6 +42,8 @@ start_child(error) ->
 	set -> gen_server:start_link(?MODULE, error, [])
     end;
 
+start_child({return, Term}) ->
+    Term;
 
 start_child(Extra) ->
     {ok, Pid} = gen_server:start_link(?MODULE, normal, []),
diff --git a/lib/stdlib/test/supervisor_SUITE.erl b/lib/stdlib/test/supervisor_SUITE.erl
index cd2c6b0cbb..761df8eb40 100644
--- a/lib/stdlib/test/supervisor_SUITE.erl
+++ b/lib/stdlib/test/supervisor_SUITE.erl
@@ -39,6 +39,9 @@
 	  sup_start_ignore_temporary_child_start_child_simple/1,
           sup_start_ignore_permanent_child_start_child_simple/1,
 	  sup_start_error_return/1, sup_start_fail/1,
+          sup_start_child_returns_error/1,
+          sup_start_restart_child_returns_error/1,
+          sup_start_child_returns_error_simple/1,
 	  sup_start_map/1, sup_start_map_simple/1,
 	  sup_start_map_faulty_specs/1,
 	  sup_stop_infinity/1, sup_stop_timeout/1, sup_stop_brutal_kill/1,
@@ -65,14 +68,16 @@
 	  simple_one_for_one_extra/1, simple_one_for_one_shutdown/1]).
 
 %% Misc tests
--export([child_unlink/1, tree/1, count_children/1,
+-export([child_unlink/1, tree/1, count_children/1, count_children_supervisor/1,
 	 count_restarting_children/1, get_callback_module/1,
 	 do_not_save_start_parameters_for_temporary_children/1,
 	 do_not_save_child_specs_for_temporary_children/1,
 	 simple_one_for_one_scale_many_temporary_children/1,
          simple_global_supervisor/1, hanging_restart_loop/1,
+	 hanging_restart_loop_rest_for_one/1,
 	 hanging_restart_loop_simple/1, code_change/1, code_change_map/1,
-	 code_change_simple/1, code_change_simple_map/1]).
+	 code_change_simple/1, code_change_simple_map/1,
+         order_of_children/1, scale_start_stop_many_children/1]).
 
 %%-------------------------------------------------------------------------
 
@@ -91,12 +96,15 @@ all() ->
      {group, normal_termination},
      {group, shutdown_termination},
      {group, abnormal_termination}, child_unlink, tree,
-     count_children, count_restarting_children, get_callback_module,
+     count_children, count_children_supervisor, count_restarting_children,
+     get_callback_module,
      do_not_save_start_parameters_for_temporary_children,
      do_not_save_child_specs_for_temporary_children,
      simple_one_for_one_scale_many_temporary_children, temporary_bystander,
-     simple_global_supervisor, hanging_restart_loop, hanging_restart_loop_simple,
-     code_change, code_change_map, code_change_simple, code_change_simple_map].
+     simple_global_supervisor, hanging_restart_loop,
+     hanging_restart_loop_rest_for_one, hanging_restart_loop_simple,
+     code_change, code_change_map, code_change_simple, code_change_simple_map,
+     order_of_children, scale_start_stop_many_children].
 
 groups() -> 
     [{sup_start, [],
@@ -105,7 +113,10 @@ groups() ->
        sup_start_ignore_temporary_child_start_child,
        sup_start_ignore_temporary_child_start_child_simple,
        sup_start_ignore_permanent_child_start_child_simple,
-       sup_start_error_return, sup_start_fail]},
+       sup_start_error_return, sup_start_fail,
+       sup_start_child_returns_error, sup_start_restart_child_returns_error,
+       sup_start_child_returns_error_simple
+      ]},
      {sup_start_map, [],
       [sup_start_map, sup_start_map_simple, sup_start_map_faulty_specs]},
      {sup_stop, [],
@@ -147,6 +158,15 @@ init_per_testcase(_Case, Config) ->
     Config.
 
 end_per_testcase(_Case, _Config) ->
+    %% Clean up to avoid unnecessary error reports in the shell
+    case whereis(sup_test) of
+        SupPid when is_pid(SupPid) ->
+            unlink(SupPid),
+            exit(SupPid,shutdown),
+            ok;
+        _ ->
+            error
+    end,
     ok.
 
 start_link(InitResult) ->
@@ -274,6 +294,7 @@ sup_start_ignore_permanent_child_start_child_simple(Config)
     %% Regression test: check that the supervisor terminates without error.
     exit(Pid, shutdown),
     check_exit_reason(Pid, shutdown).
+
 %%-------------------------------------------------------------------------
 %% Tests what happens if init-callback returns a invalid value.
 sup_start_error_return(Config) when is_list(Config) ->
@@ -289,6 +310,53 @@ sup_start_fail(Config) when is_list(Config) ->
     check_exit_reason(Term).
 
 %%-------------------------------------------------------------------------
+%% Test what happens when the start function for a child returns
+%% {error,Reason} or some other term().
+sup_start_restart_child_returns_error(_Config) ->
+    process_flag(trap_exit, true),
+    Child = {child1, {supervisor_1, start_child, [error]},
+              permanent, 1000, worker, []},
+    {ok, _Pid}  = start_link({ok, {{one_for_one, 2, 3600}, [Child]}}),
+
+    ok = supervisor:terminate_child(sup_test, child1),
+    {error,{function_clause,_}} = supervisor:restart_child(sup_test,child1),
+
+    [{child1,undefined,worker,[]}] = supervisor:which_children(sup_test),
+    ok.
+
+%%-------------------------------------------------------------------------
+%% Test what happens when the start function for a child returns
+%% {error,Reason} or some other term().
+sup_start_child_returns_error(_Config) ->
+    process_flag(trap_exit, true),
+    Child1 = {child1, {supervisor_1, start_child, [{return,{error,reason}}]},
+              permanent, 1000, worker, []},
+    Child2 = {child2, {supervisor_1, start_child, [{return,error_reason}]},
+              permanent, 1000, worker, []},
+    {ok, _Pid}  = start_link({ok, {{one_for_one, 2, 3600}, []}}),
+
+    {error,{reason,_}} = supervisor:start_child(sup_test,Child1),
+    {error,{error_reason,_}} = supervisor:start_child(sup_test,Child2),
+
+    [] = supervisor:which_children(sup_test),
+    ok.
+
+%%-------------------------------------------------------------------------
+%% Test what happens when the start function for a child returns
+%% {error,Reason} - simple_one_for_one
+sup_start_child_returns_error_simple(_Config) ->
+    process_flag(trap_exit, true),
+    Child = {child1, {supervisor_1, start_child, []},
+             permanent, 1000, worker, []},
+    {ok, _Pid}  = start_link({ok, {{simple_one_for_one, 2, 3600}, [Child]}}),
+
+    {error,reason} = supervisor:start_child(sup_test,[{return,{error,reason}}]),
+    {error,error_reason} = supervisor:start_child(sup_test,[{return,error_reason}]),
+
+    [] = supervisor:which_children(sup_test),
+    ok.
+
+%%-------------------------------------------------------------------------
 %% Tests that the supervisor process starts correctly with map
 %% startspec, and that the full childspec can be read.
 sup_start_map(Config) when is_list(Config) ->
@@ -468,7 +536,16 @@ extra_return(Config) when is_list(Config) ->
     [{child1, CPid3, worker, []}] = supervisor:which_children(sup_test),
     [1,1,0,1] = get_child_counts(sup_test),
 
-    ok.
+    %% Check that it can be automatically restarted
+    terminate(CPid3, abnormal),
+    [{child1, CPid4, worker, []}] = supervisor:which_children(sup_test),
+    [1,1,0,1] = get_child_counts(sup_test),
+    if (not is_pid(CPid4)) orelse CPid4=:=CPid3 ->
+            ct:fail({not_restarted,CPid3,CPid4});
+       true ->
+            ok
+    end.
+
 %%-------------------------------------------------------------------------
 %% Test API functions start_child/2, terminate_child/2, delete_child/2
 %% restart_child/2, which_children/1, count_children/1. Only correct
@@ -1140,7 +1217,7 @@ simple_one_for_one(Config) when is_list(Config) ->
     [{Id4, Pid4, _, _}|_] = supervisor:which_children(sup_test),
 
     terminate(SupPid, Pid4, Id4, abnormal),
-    check_exit([SupPid]).
+    check_exit_reason(SupPid,shutdown).
 
 
 %%-------------------------------------------------------------------------
@@ -1378,6 +1455,11 @@ tree(Config) when is_list(Config) ->
 		  [?MODULE, {ok, {{one_for_one, 4, 3600}, []}}]},
 		 permanent, infinity,
 		 supervisor, []},
+    ChildSup3 = {supchild3,
+		 {supervisor, start_link,
+		  [?MODULE, {ok, {{one_for_one, 4, 3600}, []}}]},
+		 transient, infinity,
+		 supervisor, []},
 
     %% Top supervisor
     {ok, SupPid} = start_link({ok, {{one_for_all, 4, 3600}, []}}),
@@ -1385,7 +1467,9 @@ tree(Config) when is_list(Config) ->
     %% Child supervisors  
     {ok, Sup1} = supervisor:start_child(SupPid, ChildSup1),
     {ok, Sup2} = supervisor:start_child(SupPid, ChildSup2),
-    [2,2,2,0] = get_child_counts(SupPid),
+    {ok, _Sup3} = supervisor:start_child(SupPid, ChildSup3),
+    ok = supervisor:terminate_child(SupPid, supchild3),
+    [3,2,3,0] = get_child_counts(SupPid),
 
     %% Workers
     [{_, CPid2, _, _},{_, CPid1, _, _}] =
@@ -1417,16 +1501,21 @@ tree(Config) when is_list(Config) ->
 
     timer:sleep(1000),
 
-    [{supchild2, NewSup2, _, _},{supchild1, NewSup1, _, _}] =
+    [{supchild3, NewSup3, _, _},
+     {supchild2, NewSup2, _, _},
+     {supchild1, NewSup1, _, _}] =
 	supervisor:which_children(SupPid),
-    [2,2,2,0] = get_child_counts(SupPid),
+    [3,3,3,0] = get_child_counts(SupPid),
 
     [{child2, _, _, _},{child1, _, _, _}]  =
 	supervisor:which_children(NewSup1),
     [2,2,0,2] = get_child_counts(NewSup1),
 
     [] = supervisor:which_children(NewSup2),
-    [0,0,0,0] = get_child_counts(NewSup2).
+    [0,0,0,0] = get_child_counts(NewSup2),
+
+    [] = supervisor:which_children(NewSup3),
+    [0,0,0,0] = get_child_counts(NewSup3).
 
 %%-------------------------------------------------------------------------
 %% Test count_children
@@ -1459,6 +1548,36 @@ count_children(Config) when is_list(Config) ->
     [1,0,0,0] = get_child_counts(sup_test).
 
 %%-------------------------------------------------------------------------
+%% Test count_children for simple_one_for_one, when children are supervisors
+count_children_supervisor(Config) when is_list(Config) ->
+    process_flag(trap_exit, true),
+    Child = {child, {supervisor_1, start_child, []}, temporary, infinity,
+	     supervisor, []},
+    {ok, SupPid} = start_link({ok, {{simple_one_for_one, 2, 3600}, [Child]}}),
+    [supervisor:start_child(sup_test, []) || _Ignore <- lists:seq(1,1000)],
+
+    Children = supervisor:which_children(sup_test),
+    ChildCount = get_child_counts(sup_test),
+
+    [supervisor:start_child(sup_test, []) || _Ignore2 <- lists:seq(1,1000)],
+
+    ChildCount2 = get_child_counts(sup_test),
+    Children2 = supervisor:which_children(sup_test),
+
+    ChildCount3 = get_child_counts(sup_test),
+    Children3 = supervisor:which_children(sup_test),
+
+    1000 = length(Children),
+    [1,1000,1000,0] = ChildCount,
+    2000 = length(Children2),
+    [1,2000,2000,0] = ChildCount2,
+    Children3 = Children2,
+    ChildCount3 = ChildCount2,
+
+    [terminate(SupPid, Pid, child, kill) || {undefined, Pid, supervisor, _Modules} <- Children3],
+    [1,0,0,0] = get_child_counts(sup_test).
+
+%%-------------------------------------------------------------------------
 %% Test count_children when some children are restarting
 count_restarting_children(Config) when is_list(Config) ->
     process_flag(trap_exit, true),
@@ -1577,11 +1696,11 @@ dont_save_start_parameters_for_temporary_children(simple_one_for_one = Type) ->
     start_children(Sup2, [LargeList], 100),
     start_children(Sup3, [LargeList], 100),
 
-    [{memory,Mem1}] = process_info(Sup1, [memory]),
-    [{memory,Mem2}] = process_info(Sup2, [memory]),
-    [{memory,Mem3}] = process_info(Sup3, [memory]),
+    Size1 = erts_debug:flat_size(sys:get_status(Sup1)),
+    Size2 = erts_debug:flat_size(sys:get_status(Sup2)),
+    Size3 = erts_debug:flat_size(sys:get_status(Sup3)),
 
-    true = (Mem3 < Mem1)  and  (Mem3 < Mem2),
+    true = (Size3 < Size1)  and  (Size3 < Size2),
 
     terminate(Sup1, shutdown),
     terminate(Sup2, shutdown),
@@ -1605,11 +1724,11 @@ dont_save_start_parameters_for_temporary_children(Type) ->
     start_children(Sup2, Transient, 100),
     start_children(Sup3, Temporary, 100),
 
-    [{memory,Mem1}] = process_info(Sup1, [memory]),
-    [{memory,Mem2}] = process_info(Sup2, [memory]),
-    [{memory,Mem3}] = process_info(Sup3, [memory]),
+    Size1 = erts_debug:flat_size(sys:get_status(Sup1)),
+    Size2 = erts_debug:flat_size(sys:get_status(Sup2)),
+    Size3 = erts_debug:flat_size(sys:get_status(Sup3)),
 
-    true = (Mem3 < Mem1)  and  (Mem3 < Mem2),
+    true = (Size3 < Size1)  and  (Size3 < Size2),
 
     terminate(Sup1, shutdown),
     terminate(Sup2, shutdown),
@@ -1847,6 +1966,61 @@ hanging_restart_loop(Config) when is_list(Config) ->
     undefined = whereis(sup_test),
     ok.
 
+hanging_restart_loop_rest_for_one(Config) when is_list(Config) ->
+    process_flag(trap_exit, true),
+    {ok, Pid} = start_link({ok, {{rest_for_one, 8, 10}, []}}),
+    Child1 = {child1, {supervisor_1, start_child, []},
+	      permanent, brutal_kill, worker, []},
+    Child2 = {child2, {supervisor_deadlock, start_child, []},
+	      permanent, brutal_kill, worker, []},
+    Child3 = {child3, {supervisor_1, start_child, []},
+	      permanent, brutal_kill, worker, []},
+
+    %% Ets table with state read by supervisor_deadlock.erl
+    ets:new(supervisor_deadlock,[set,named_table,public]),
+    ets:insert(supervisor_deadlock,{fail_start,false}),
+
+    {ok, CPid1} = supervisor:start_child(sup_test, Child1),
+    {ok, CPid2} = supervisor:start_child(sup_test, Child2),
+    link(CPid2),
+    {ok, _CPid3} = supervisor:start_child(sup_test, Child3),
+
+    ets:insert(supervisor_deadlock,{fail_start,true}),
+    supervisor_deadlock:restart_child(),
+    timer:sleep(2000), % allow restart to happen before proceeding
+
+    {error, already_present} = supervisor:start_child(sup_test, Child2),
+    {error, restarting} = supervisor:restart_child(sup_test, child2),
+    {error, restarting} = supervisor:delete_child(sup_test, child2),
+    [{child3,undefined,worker,[]},
+     {child2,restarting,worker,[]},
+     {child1,CPid1,worker,[]}] = supervisor:which_children(sup_test),
+    [3,1,0,3] = get_child_counts(sup_test),
+
+    ok = supervisor:terminate_child(sup_test, child2),
+    check_exit_reason(CPid2, error),
+    [{child3,undefined,worker,[]},
+     {child2,undefined,worker,[]},
+     {child1,CPid1,worker,[]}] = supervisor:which_children(sup_test),
+
+    ets:insert(supervisor_deadlock,{fail_start,false}),
+    {ok, CPid22} = supervisor:restart_child(sup_test, child2),
+    link(CPid22),
+
+    ets:insert(supervisor_deadlock,{fail_start,true}),
+    supervisor_deadlock:restart_child(),
+    timer:sleep(2000), % allow restart to happen before proceeding
+
+    %% Terminating supervisor.
+    %% OTP-9549 fixes so this does not give a timetrap timeout -
+    %% i.e. that supervisor does not hang in restart loop.
+    terminate(Pid,shutdown),
+
+    %% Check that child died with reason from 'restart' request above
+    check_exit_reason(CPid22, error),
+    undefined = whereis(sup_test),
+    ok.
+
 %%-------------------------------------------------------------------------
 %% Test that child and supervisor can be shutdown while hanging in
 %% restart loop, simple_one_for_one.
@@ -2022,11 +2196,11 @@ code_change_simple(_Config) ->
     SimpleChild2 = {child2,{supervisor_1, start_child, []}, permanent,
 		    brutal_kill, worker, []},
 
-    {error, {error, {ok,[_,_]}}} =
+    {error, {error, {ok,{[_,_],_}}}} =
 	fake_upgrade(SimplePid,{ok,{SimpleFlags,[SimpleChild1,SimpleChild2]}}),
 
     %% Attempt to remove child
-    {error, {error, {ok,[]}}} = fake_upgrade(SimplePid,{ok,{SimpleFlags,[]}}),
+    {error, {error, {ok,{[],_}}}} = fake_upgrade(SimplePid,{ok,{SimpleFlags,[]}}),
 
     terminate(SimplePid,shutdown),
     ok.
@@ -2047,11 +2221,11 @@ code_change_simple_map(_Config) ->
     %% Attempt to add child
     SimpleChild2 = #{id=>child2,
 		     start=>{supervisor_1, start_child, []}},
-    {error, {error, {ok, [_,_]}}} =
+    {error, {error, {ok, {[_,_],_}}}} =
 	fake_upgrade(SimplePid,{ok,{SimpleFlags,[SimpleChild1,SimpleChild2]}}),
 
     %% Attempt to remove child
-    {error, {error, {ok, []}}} =
+    {error, {error, {ok, {[],_}}}} =
 	fake_upgrade(SimplePid,{ok,{SimpleFlags,[]}}),
 
     terminate(SimplePid,shutdown),
@@ -2075,6 +2249,148 @@ fake_upgrade(Pid,NewInitReturn) ->
     ok = sys:resume(Pid),
     R.
 
+%% Test that children are started in the order they are given, and
+%% terminated in the opposite order
+order_of_children(_Config) ->
+    process_flag(trap_exit, true),
+    %% Use child ids that are not alphabetically storted
+    Id1 = ch7,
+    Id2 = ch3,
+    Id3 = ch10,
+    Id4 = ch2,
+    Id5 = ch5,
+    Children =
+        [{Id, {supervisor_1, start_child, []}, permanent, 1000, worker, []} ||
+            Id <- [Id1,Id2,Id3,Id4,Id5]],
+
+    {ok, SupPid}  = start_link({ok, {{rest_for_one, 2, 3600}, Children}}),
+
+
+    %% Check start order (pids are growing)
+    Which1 = supervisor:which_children(sup_test),
+    IsPid = fun({_,P,_,_}) when is_pid(P) -> true; (_) -> false end,
+    true = lists:all(IsPid,Which1),
+    SortedOnPid1 = lists:keysort(2,Which1),
+    [{Id1,Pid1,_,_},
+     {Id2,Pid2,_,_},
+     {Id3,Pid3,_,_},
+     {Id4,Pid4,_,_},
+     {Id5,Pid5,_,_}] = SortedOnPid1,
+
+    TPid = self(),
+    TraceHandler = fun({trace,P,exit,_},{Last,Ps}) when P=:=Last ->
+                           TPid ! {exited,lists:reverse([P|Ps])},
+                           {Last,Ps};
+                      ({trace,P,exit,_},{Last,Ps}) ->
+                           {Last,[P|Ps]};
+                      (_T,Acc) ->
+                           Acc
+                   end,
+
+    %% Terminate Pid3 and check that Pid4 and Pid5 are terminated in
+    %% expected order.
+    Expected1 = [Pid5,Pid4],
+    {ok,_} = dbg:tracer(process,{TraceHandler,{Pid4,[]}}),
+    [{ok,[_]} = dbg:p(P,procs) || P <- Expected1],
+    terminate(Pid3, abnormal),
+    receive {exited,ExitedPids1} ->
+            dbg:stop_clear(),
+            case ExitedPids1 of
+                Expected1 -> ok;
+                _ -> ct:fail({faulty_termination_order,
+                              {expected,Expected1},
+                              {got,ExitedPids1}})
+            end
+    after 3000 ->
+            dbg:stop_clear(),
+            ct:fail({shutdown_fail,timeout})
+    end,
+
+    %% Then check that Id3-5 are started again in correct order
+    Which2 = supervisor:which_children(sup_test),
+    true = lists:all(IsPid,Which2),
+    SortedOnPid2 = lists:keysort(2,Which2),
+    [{Id1,Pid1,_,_},
+     {Id2,Pid2,_,_},
+     {Id3,Pid32,_,_},
+     {Id4,Pid42,_,_},
+     {Id5,Pid52,_,_}] = SortedOnPid2,
+
+    %% Terminate supervisor and check that all children are terminated
+    %% in opposite start order
+    Expected2 = [Pid52,Pid42,Pid32,Pid2,Pid1],
+    {ok,_} = dbg:tracer(process,{TraceHandler,{Pid1,[]}}),
+    [{ok,[_]} = dbg:p(P,procs) || P <- Expected2],
+    exit(SupPid,shutdown),
+    receive {exited,ExitedPids2} ->
+            dbg:stop_clear(),
+            case ExitedPids2 of
+                Expected2 -> ok;
+                _ -> ct:fail({faulty_termination_order,
+                              {expected,Expected2},
+                              {got,ExitedPids2}})
+            end
+    after 3000 ->
+            dbg:stop_clear(),
+            ct:fail({shutdown_fail,timeout})
+    end,
+    ok.
+
+%% Test that a non-simple supervisor scales well for starting and
+%% stopping many children.
+scale_start_stop_many_children(_Config) ->
+    process_flag(trap_exit, true),
+    {ok, _Pid}  = start_link({ok, {{one_for_one, 2, 3600}, []}}),
+    N1 = 1000,
+    N2 = 100000,
+    Ids1 = lists:seq(1,N1),
+    Ids2 = lists:seq(1,N2),
+    Children1 = [{Id,{supervisor_1,start_child,[]},permanent,1000,worker,[]} ||
+                    Id <- Ids1],
+    Children2 = [{Id,{supervisor_1,start_child,[]},permanent,1000,worker,[]} ||
+                    Id <- Ids2],
+
+    {StartT1,_} =
+        timer:tc(fun() ->
+                         [supervisor:start_child(sup_test,C) || C <- Children1]
+                 end),
+    {StopT1,_} =
+        timer:tc(fun() ->
+                         [supervisor:terminate_child(sup_test,I) || I <- Ids1]
+                 end),
+    ct:log("~w children, start time: ~w ms, stop time: ~w ms",
+           [N1, StartT1 div 1000, StopT1 div 1000]),
+
+    {StartT2,_} =
+        timer:tc(fun() ->
+                         [supervisor:start_child(sup_test,C) || C <- Children2]
+                 end),
+    {StopT2,_} =
+        timer:tc(fun() ->
+                         [supervisor:terminate_child(sup_test,I) || I <- Ids2]
+                 end),
+    ct:log("~w children, start time: ~w ms, stop time: ~w ms",
+           [N2, StartT2 div 1000, StopT2 div 1000]),
+
+    %% Scaling should be more or less linear, but allowing a bit more
+    %% to avoid false alarms
+    ScaleLimit = (N2 div N1) * 10,
+    StartScale = StartT2 div StartT1,
+    StopScale = StopT2 div StopT1,
+
+    ct:log("Scale limit: ~w~nStart scale: ~w~nStop scale: ~w",
+           [ScaleLimit, StartScale, StopScale]),
+
+    if StartScale > ScaleLimit ->
+            ct:fail({bad_start_scale,StartScale});
+       StopScale > ScaleLimit ->
+            ct:fail({bad_stop_scale,StopScale});
+       true ->
+            ok
+    end,
+
+    ok.
+
 %%-------------------------------------------------------------------------
 terminate(Pid, Reason) when Reason =/= supervisor ->
     terminate(dummy, Pid, dummy, Reason).
diff --git a/lib/stdlib/test/supervisor_deadlock.erl b/lib/stdlib/test/supervisor_deadlock.erl
index 8d3d1c6f30..f51aecccb2 100644
--- a/lib/stdlib/test/supervisor_deadlock.erl
+++ b/lib/stdlib/test/supervisor_deadlock.erl
@@ -1,5 +1,5 @@
 -module(supervisor_deadlock).
--compile(export_all).
+-compile([export_all,nowarn_export_all]).
 
 
 %%%-----------------------------------------------------------------
diff --git a/lib/stdlib/test/unicode_util_SUITE.erl b/lib/stdlib/test/unicode_util_SUITE.erl
index 7dba0a2fd0..632d9ae6e6 100644
--- a/lib/stdlib/test/unicode_util_SUITE.erl
+++ b/lib/stdlib/test/unicode_util_SUITE.erl
@@ -312,12 +312,23 @@ get(_) ->
     add_get_tests.
 
 count(Config) ->
+    Parent = self(),
+    Exec = fun() ->
+                   do_measure(Config),
+                   Parent ! {test_done, self()}
+           end,
     ct:timetrap({minutes,5}),
     case ct:get_timetrap_info() of
-        {_,{_,Scale}} ->
+        {_,{_,Scale}} when Scale > 1 ->
             {skip,{measurments_skipped_debug,Scale}};
-        _ -> % No scaling
-            do_measure(Config)
+        _ -> % No scaling, run at most 2 min
+            Tester = spawn(Exec),
+            receive {test_done, Tester} -> ok
+            after 120000 ->
+                    io:format("Timelimit reached stopping~n",[]),
+                    exit(Tester, die)
+            end,
+            ok
     end.
 
 do_measure(Config) ->
diff --git a/lib/stdlib/test/uri_string_SUITE.erl b/lib/stdlib/test/uri_string_SUITE.erl
new file mode 100644
index 0000000000..fef356355c
--- /dev/null
+++ b/lib/stdlib/test/uri_string_SUITE.erl
@@ -0,0 +1,926 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2008-2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(uri_string_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+
+-export([all/0, suite/0,groups/0,
+         normalize/1,
+         parse_binary_fragment/1, parse_binary_host/1, parse_binary_host_ipv4/1,
+         parse_binary_host_ipv6/1,
+         parse_binary_path/1, parse_binary_pct_encoded_fragment/1, parse_binary_pct_encoded_query/1,
+         parse_binary_pct_encoded_userinfo/1, parse_binary_port/1,
+         parse_binary_query/1, parse_binary_scheme/1, parse_binary_userinfo/1,
+         parse_fragment/1, parse_host/1, parse_host_ipv4/1, parse_host_ipv6/1,
+         parse_path/1, parse_pct_encoded_fragment/1, parse_pct_encoded_query/1,
+         parse_pct_encoded_userinfo/1, parse_port/1,
+         parse_query/1, parse_scheme/1, parse_userinfo/1,
+	 parse_list/1, parse_binary/1, parse_mixed/1, parse_relative/1,
+         parse_special/1, parse_special2/1, parse_negative/1,
+         recompose_fragment/1, recompose_parse_fragment/1,
+         recompose_query/1, recompose_parse_query/1,
+         recompose_path/1, recompose_parse_path/1,
+         recompose_autogen/1, parse_recompose_autogen/1,
+         transcode_basic/1, transcode_options/1, transcode_mixed/1, transcode_negative/1,
+         compose_query/1, compose_query_latin1/1, compose_query_negative/1,
+         dissect_query/1, dissect_query_negative/1,
+         interop_query_latin1/1, interop_query_utf8/1
+        ]).
+
+
+-define(SCHEME, "foo").
+-define(USERINFO, "åsa").
+-define(USERINFO_ENC, "%C3%A5sa").
+-define(HOST, "älvsjö").
+-define(HOST_ENC, "%C3%A4lvsj%C3%B6").
+-define(IPV6, "::127.0.0.1").
+-define(IPV6_ENC, "[::127.0.0.1]").
+-define(PORT, 8042).
+-define(PORT_ENC, ":8042").
+-define(PATH, "/där").
+-define(PATH_ENC, "/d%C3%A4r").
+-define(QUERY, "name=örn").
+-define(QUERY_ENC, "?name=%C3%B6rn").
+-define(FRAGMENT, "näsa").
+-define(FRAGMENT_ENC, "#n%C3%A4sa").
+
+
+suite() ->
+    [{timetrap,{minutes,1}}].
+
+all() ->
+    [
+     normalize,
+     parse_binary_scheme,
+     parse_binary_userinfo,
+     parse_binary_pct_encoded_userinfo,
+     parse_binary_host,
+     parse_binary_host_ipv4,
+     parse_binary_host_ipv6,
+     parse_binary_port,
+     parse_binary_path,
+     parse_binary_query,
+     parse_binary_pct_encoded_query,
+     parse_binary_fragment,
+     parse_binary_pct_encoded_fragment,
+     parse_scheme,
+     parse_userinfo,
+     parse_pct_encoded_userinfo,
+     parse_host,
+     parse_host_ipv4,
+     parse_host_ipv6,
+     parse_port,
+     parse_path,
+     parse_query,
+     parse_pct_encoded_query,
+     parse_fragment,
+     parse_pct_encoded_fragment,
+     parse_list,
+     parse_binary,
+     parse_mixed,
+     parse_relative,
+     parse_special,
+     parse_special2,
+     parse_negative,
+     recompose_fragment,
+     recompose_parse_fragment,
+     recompose_query,
+     recompose_parse_query,
+     recompose_path,
+     recompose_parse_path,
+     recompose_autogen,
+     parse_recompose_autogen,
+     transcode_basic,
+     transcode_options,
+     transcode_mixed,
+     transcode_negative,
+     compose_query,
+     compose_query_latin1,
+     compose_query_negative,
+     dissect_query,
+     dissect_query_negative,
+     interop_query_latin1,
+     interop_query_utf8
+    ].
+
+groups() ->
+    [].
+
+
+%%-------------------------------------------------------------------------
+%% Helper functions
+%%-------------------------------------------------------------------------
+uri_combinations() ->
+    [[Sch,Usr,Hst,Prt,Pat,Qry,Frg] ||
+        Sch <- [fun update_scheme/1, fun update_scheme_binary/1, none],
+        Usr <- [fun update_userinfo/1, fun update_userinfo_binary/1, none],
+        Hst <- [fun update_host/1, fun update_host_binary/1,
+                fun update_ipv6/1, fun update_ipv6_binary/1, none],
+        Prt <- [fun update_port/1, none],
+        Pat <- [fun update_path/1, fun update_path_binary/1],
+        Qry <- [fun update_query/1,fun update_query_binary/1, none],
+        Frg <- [fun update_fragment/1, fun update_fragment_binary/1, none],
+        not (Usr =:= none andalso Hst =:= none andalso Prt =/= none),
+        not (Usr =/= none andalso Hst =:= none andalso Prt =:= none),
+        not (Usr =/= none andalso Hst =:= none andalso Prt =/= none)].
+
+
+generate_test_vector(Comb) ->
+    Fun = fun (F, {Map, URI}) when is_function(F) -> F({Map, URI});
+              (_, Map) -> Map
+          end,
+    lists:foldl(Fun, {#{}, empty}, Comb).
+
+generate_test_vectors(L) ->
+    lists:map(fun generate_test_vector/1, L).
+
+update_fragment({In, empty}) ->
+    {In#{fragment => ?FRAGMENT}, ?FRAGMENT_ENC};
+update_fragment({In, Out}) when is_list(Out) ->
+    {In#{fragment => ?FRAGMENT}, Out ++ ?FRAGMENT_ENC};
+update_fragment({In, Out}) when is_binary(Out) ->
+    {In#{fragment => ?FRAGMENT}, binary_to_list(Out) ++ ?FRAGMENT_ENC}.
+
+update_fragment_binary({In, empty}) ->
+    {In#{fragment => <<?FRAGMENT/utf8>>}, <<?FRAGMENT_ENC>>};
+update_fragment_binary({In, Out}) when is_list(Out) ->
+    {In#{fragment => <<?FRAGMENT/utf8>>}, Out ++ ?FRAGMENT_ENC};
+update_fragment_binary({In, Out}) when is_binary(Out) ->
+    {In#{fragment => <<?FRAGMENT/utf8>>}, <<Out/binary,?FRAGMENT_ENC>>}.
+
+
+update_query({In, empty}) ->
+    {In#{query => ?QUERY}, ?QUERY_ENC};
+update_query({In, Out}) when is_list(Out) ->
+    {In#{query => ?QUERY}, Out ++ ?QUERY_ENC};
+update_query({In, Out}) when is_binary(Out) ->
+    {In#{query => ?QUERY}, binary_to_list(Out) ++ ?QUERY_ENC}.
+
+update_query_binary({In, empty}) ->
+    {In#{query => <<?QUERY/utf8>>}, <<?QUERY_ENC>>};
+update_query_binary({In, Out}) when is_list(Out) ->
+    {In#{query => <<?QUERY/utf8>>}, Out ++ ?QUERY_ENC};
+update_query_binary({In, Out}) when is_binary(Out) ->
+    {In#{query => <<?QUERY/utf8>>}, <<Out/binary,?QUERY_ENC>>}.
+
+update_path({In, empty}) ->
+    {In#{path => ?PATH}, ?PATH_ENC};
+update_path({In, Out}) when is_list(Out) ->
+    {In#{path => ?PATH}, Out ++ ?PATH_ENC};
+update_path({In, Out}) when is_binary(Out) ->
+    {In#{path => ?PATH}, binary_to_list(Out) ++ ?PATH_ENC}.
+
+update_path_binary({In, empty}) ->
+    {In#{path => <<?PATH/utf8>>}, <<?PATH_ENC>>};
+update_path_binary({In, Out}) when is_list(Out) ->
+    {In#{path => <<?PATH/utf8>>}, Out ++ ?PATH_ENC};
+update_path_binary({In, Out}) when is_binary(Out) ->
+    {In#{path => <<?PATH/utf8>>}, <<Out/binary,?PATH_ENC>>}.
+
+update_port({In, Out}) when is_list(Out) ->
+    {In#{port => ?PORT}, Out ++ ?PORT_ENC};
+update_port({In, Out}) when is_binary(Out) ->
+    {In#{port => ?PORT}, <<Out/binary,?PORT_ENC>>}.
+
+update_host({In, empty}) ->
+    {In#{host => ?HOST}, "//" ++ ?HOST_ENC};
+update_host({In, Out}) when is_list(Out) ->
+    case maps:is_key(userinfo, In) of
+        true -> {In#{host => ?HOST}, Out ++ [$@|?HOST_ENC]};
+        false -> {In#{host => ?HOST}, Out ++ [$/,$/|?HOST_ENC]}
+    end;
+update_host({In, Out}) when is_binary(Out) ->
+    case maps:is_key(userinfo, In) of
+        true -> {In#{host => ?HOST}, binary_to_list(Out) ++ [$@|?HOST_ENC]};
+        false -> {In#{host => ?HOST}, binary_to_list(Out) ++ [$/,$/|?HOST_ENC]}
+    end.
+
+update_host_binary({In, empty}) ->
+    {In#{host => <<?HOST/utf8>>}, <<"//",?HOST_ENC>>};
+update_host_binary({In, Out}) when is_list(Out) ->
+    case maps:is_key(userinfo, In) of
+        true -> {In#{host => <<?HOST/utf8>>}, Out ++ [$@|?HOST_ENC]};
+        false -> {In#{host => <<?HOST/utf8>>}, Out ++ [$/,$/|?HOST_ENC]}
+    end;
+update_host_binary({In, Out}) when is_binary(Out) ->
+    case maps:is_key(userinfo, In) of
+        true -> {In#{host => <<?HOST/utf8>>}, <<Out/binary,$@,?HOST_ENC>>};
+        false-> {In#{host => <<?HOST/utf8>>}, <<Out/binary,"//",?HOST_ENC>>}
+    end.
+
+update_ipv6({In, empty}) ->
+    {In#{host => ?IPV6}, "//" ++ ?IPV6_ENC};
+update_ipv6({In, Out}) when is_list(Out) ->
+    case maps:is_key(userinfo, In) of
+        true -> {In#{host => ?IPV6}, Out ++ [$@|?IPV6_ENC]};
+        false -> {In#{host => ?IPV6}, Out ++ [$/,$/|?IPV6_ENC]}
+    end;
+update_ipv6({In, Out}) when is_binary(Out) ->
+    case maps:is_key(userinfo, In) of
+        true -> {In#{host => ?IPV6}, binary_to_list(Out) ++ [$@|?IPV6_ENC]};
+        false -> {In#{host => ?IPV6}, binary_to_list(Out) ++ [$/,$/|?IPV6_ENC]}
+    end.
+
+update_ipv6_binary({In, empty}) ->
+    {In#{host => <<?IPV6/utf8>>}, <<"//",?IPV6_ENC>>};
+update_ipv6_binary({In, Out}) when is_list(Out) ->
+    case maps:is_key(userinfo, In) of
+        true -> {In#{host => <<?IPV6/utf8>>}, Out ++ [$@|?IPV6_ENC]};
+        false -> {In#{host => <<?IPV6/utf8>>}, Out ++ [$/,$/|?IPV6_ENC]}
+    end;
+update_ipv6_binary({In, Out}) when is_binary(Out) ->
+    case maps:is_key(userinfo, In) of
+        true -> {In#{host => <<?IPV6/utf8>>}, <<Out/binary,$@,?IPV6_ENC>>};
+        false-> {In#{host => <<?IPV6/utf8>>}, <<Out/binary,"//",?IPV6_ENC>>}
+    end.
+
+update_userinfo({In, empty}) ->
+    {In#{userinfo => ?USERINFO}, "//" ++ ?USERINFO_ENC};
+update_userinfo({In, Out}) when is_list(Out) ->
+    {In#{userinfo => ?USERINFO}, Out ++ "//" ++ ?USERINFO_ENC};
+update_userinfo({In, Out}) when is_binary(Out) ->
+    {In#{userinfo => ?USERINFO}, binary_to_list(Out) ++ "//" ++ ?USERINFO_ENC}.
+
+update_userinfo_binary({In, empty}) ->
+    {In#{userinfo => <<?USERINFO/utf8>>}, <<"//",?USERINFO_ENC>>};
+update_userinfo_binary({In, Out}) when is_list(Out) ->
+    {In#{userinfo => <<?USERINFO/utf8>>}, Out ++ "//" ++ ?USERINFO_ENC};
+update_userinfo_binary({In, Out}) when is_binary(Out) ->
+    {In#{userinfo => <<?USERINFO/utf8>>}, <<Out/binary,"//",?USERINFO_ENC>>}.
+
+update_scheme({In, empty}) ->
+    {In#{scheme => ?SCHEME}, ?SCHEME ++ ":"}.
+
+update_scheme_binary({In, empty}) ->
+    {In#{scheme => <<?SCHEME/utf8>>}, <<?SCHEME,$:>>}.
+
+
+%% Test recompose on a generated test vector
+run_test_recompose({#{}, empty}) ->
+    try "" = uri_string:recompose(#{}) of
+        _ -> ok
+    catch
+        _:_ -> error({test_failed, #{}, ""})
+    end;
+run_test_recompose({Map, URI}) ->
+    try URI = uri_string:recompose(Map) of
+        URI -> ok
+    catch
+        _:_ -> error({test_failed, Map, URI})
+    end.
+
+%% Test parse - recompose on a generated test vector
+run_test_parse_recompose({#{}, empty}) ->
+    try "" = uri_string:recompose(uri_string:parse("")) of
+        _ -> ok
+    catch
+        _:_ -> error({test_failed, #{}, ""})
+    end;
+run_test_parse_recompose({Map, URI}) ->
+    try URI = uri_string:recompose(uri_string:parse(URI)) of
+        URI -> ok
+    catch
+        _:_ -> error({test_failed, Map, URI})
+    end.
+
+
+%%-------------------------------------------------------------------------
+%% Parse tests
+%%-------------------------------------------------------------------------
+
+parse_binary_scheme(_Config) ->
+    #{} = uri_string:parse(<<>>),
+    #{path := <<"foo">>} = uri_string:parse(<<"foo">>),
+    #{scheme := <<"foo">>} = uri_string:parse(<<"foo:">>),
+    #{scheme := <<"foo">>, path := <<"bar:nisse">>} = uri_string:parse(<<"foo:bar:nisse">>),
+    #{scheme := <<"foo">>, host := <<"">>} = uri_string:parse(<<"foo://">>),
+    #{scheme := <<"foo">>, host := <<"">>, path := <<"/">>} = uri_string:parse(<<"foo:///">>),
+    #{scheme := <<"foo">>, host := <<"">>, path := <<"//">>} = uri_string:parse(<<"foo:////">>),
+
+    #{path := <<"/">>} = uri_string:parse(<<"/">>),
+    #{host := <<>>} = uri_string:parse(<<"//">>),
+    #{host := <<>>, path := <<"/">>} = uri_string:parse(<<"///">>).
+
+parse_binary_userinfo(_Config) ->
+    #{scheme := <<"user">>, path := <<"password@localhost">>} =
+        uri_string:parse(<<"user:password@localhost">>),
+    #{path := <<"user@">>} = uri_string:parse(<<"user@">>),
+    #{path := <<"/user@">>} = uri_string:parse(<<"/user@">>),
+    #{path := <<"user@localhost">>} = uri_string:parse(<<"user@localhost">>),
+    #{userinfo := <<"user">>, host := <<"localhost">>} = uri_string:parse(<<"//user@localhost">>),
+    #{userinfo := <<"user:password">>, host := <<"localhost">>} =
+        uri_string:parse(<<"//user:password@localhost">>),
+    #{scheme := <<"foo">>, path := <<"/user@">>} =
+        uri_string:parse(<<"foo:/user@">>),
+    #{scheme := <<"foo">>, userinfo := <<"user">>, host := <<"localhost">>} =
+        uri_string:parse(<<"foo://user@localhost">>),
+    #{scheme := <<"foo">>, userinfo := <<"user:password">>, host := <<"localhost">>} =
+        uri_string:parse(<<"foo://user:password@localhost">>).
+
+parse_binary_pct_encoded_userinfo(_Config) ->
+    #{scheme := <<"user">>, path := <<"合@気道"/utf8>>} =
+        uri_string:parse(<<"user:%E5%90%88@%E6%B0%97%E9%81%93">>),
+    #{path := <<"合気道@"/utf8>>} = uri_string:parse(<<"%E5%90%88%E6%B0%97%E9%81%93@">>),
+    #{path := <<"/合気道@"/utf8>>} = uri_string:parse(<<"/%E5%90%88%E6%B0%97%E9%81%93@">>),
+    #{path := <<"合@気道"/utf8>>} = uri_string:parse(<<"%E5%90%88@%E6%B0%97%E9%81%93">>),
+    #{userinfo := <<"合"/utf8>>, host := <<"気道"/utf8>>} =
+        uri_string:parse(<<"//%E5%90%88@%E6%B0%97%E9%81%93">>),
+    #{userinfo := <<"合:気"/utf8>>, host := <<"道"/utf8>>} =
+        uri_string:parse(<<"//%E5%90%88:%E6%B0%97@%E9%81%93">>),
+    #{scheme := <<"foo">>, path := <<"/合気道@"/utf8>>} =
+        uri_string:parse(<<"foo:/%E5%90%88%E6%B0%97%E9%81%93@">>),
+    #{scheme := <<"foo">>, userinfo := <<"合"/utf8>>, host := <<"気道"/utf8>>} =
+        uri_string:parse(<<"foo://%E5%90%88@%E6%B0%97%E9%81%93">>),
+    #{scheme := <<"foo">>, userinfo := <<"合:気"/utf8>>, host := <<"道"/utf8>>} =
+        uri_string:parse(<<"foo://%E5%90%88:%E6%B0%97@%E9%81%93">>),
+    {error,invalid_uri,"@"} = uri_string:parse(<<"//%E5%90%88@%E6%B0%97%E9%81%93@">>),
+    {error,invalid_uri,":"} = uri_string:parse(<<"foo://%E5%90%88@%E6%B0%97%E9%81%93@">>).
+
+parse_binary_host(_Config) ->
+    #{host := <<"hostname">>} = uri_string:parse(<<"//hostname">>),
+    #{host := <<"hostname">>,scheme := <<"foo">>} = uri_string:parse(<<"foo://hostname">>),
+    #{host := <<"hostname">>,scheme := <<"foo">>, userinfo := <<"user">>} =
+        uri_string:parse(<<"foo://user@hostname">>).
+
+parse_binary_host_ipv4(_Config) ->
+    #{host := <<"127.0.0.1">>} = uri_string:parse(<<"//127.0.0.1">>),
+    #{host := <<"127.0.0.1">>, path := <<"/over/there">>} =
+        uri_string:parse(<<"//127.0.0.1/over/there">>),
+    #{host := <<"127.0.0.1">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"//127.0.0.1?name=ferret">>),
+    #{host := <<"127.0.0.1">>, fragment := <<"nose">>} = uri_string:parse(<<"//127.0.0.1#nose">>),
+    {error,invalid_uri,"x"} = uri_string:parse(<<"//127.0.0.x">>),
+    {error,invalid_uri,"1227.0.0.1"} = uri_string:parse(<<"//1227.0.0.1">>).
+
+parse_binary_host_ipv6(_Config) ->
+    #{host := <<"::127.0.0.1">>} = uri_string:parse(<<"//[::127.0.0.1]">>),
+    #{host := <<"2001:0db8:0000:0000:0000:0000:1428:07ab">>} =
+        uri_string:parse(<<"//[2001:0db8:0000:0000:0000:0000:1428:07ab]">>),
+    #{host := <<"::127.0.0.1">>, path := <<"/over/there">>} =
+        uri_string:parse(<<"//[::127.0.0.1]/over/there">>),
+    #{host := <<"::127.0.0.1">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"//[::127.0.0.1]?name=ferret">>),
+    #{host := <<"::127.0.0.1">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"//[::127.0.0.1]#nose">>),
+    {error,invalid_uri,"x"} = uri_string:parse(<<"//[::127.0.0.x]">>),
+    {error,invalid_uri,"::1227.0.0.1"} = uri_string:parse(<<"//[::1227.0.0.1]">>),
+    {error,invalid_uri,"G"} = uri_string:parse(<<"//[2001:0db8:0000:0000:0000:0000:1428:G7ab]">>).
+
+parse_binary_port(_Config) ->
+    #{path:= <<"/:8042">>} =
+        uri_string:parse(<<"/:8042">>),
+    #{host:= <<>>, port := 8042} =
+        uri_string:parse(<<"//:8042">>),
+    #{host := <<"example.com">>, port:= 8042} =
+        uri_string:parse(<<"//example.com:8042">>),
+    #{scheme := <<"foo">>, path := <<"/:8042">>} =
+        uri_string:parse(<<"foo:/:8042">>),
+    #{scheme := <<"foo">>, host := <<>>, port := 8042} =
+        uri_string:parse(<<"foo://:8042">>),
+    #{scheme := <<"foo">>, host := <<"example.com">>, port := 8042} =
+        uri_string:parse(<<"foo://example.com:8042">>),
+    {error,invalid_uri,":"} = uri_string:parse(":600"),
+    {error,invalid_uri,"x"} = uri_string:parse("//:8042x").
+
+parse_binary_path(_Config) ->
+    #{path := <<"over/there">>} = uri_string:parse(<<"over/there">>),
+    #{path := <<"/over/there">>} = uri_string:parse(<<"/over/there">>),
+    #{scheme := <<"foo">>, path := <<"/over/there">>} =
+        uri_string:parse(<<"foo:/over/there">>),
+    #{scheme := <<"foo">>, host := <<"example.com">>, path := <<"/over/there">>} =
+        uri_string:parse(<<"foo://example.com/over/there">>),
+    #{scheme := <<"foo">>, host := <<"example.com">>, path := <<"/over/there">>, port := 8042} =
+        uri_string:parse(<<"foo://example.com:8042/over/there">>).
+
+parse_binary_query(_Config) ->
+    #{scheme := <<"foo">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"foo:?name=ferret">>),
+    #{scheme := <<"foo">>, path:= <<"over/there">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"foo:over/there?name=ferret">>),
+    #{scheme := <<"foo">>, path:= <<"/over/there">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"foo:/over/there?name=ferret">>),
+    #{scheme := <<"foo">>, host := <<"example.com">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"foo://example.com?name=ferret">>),
+    #{scheme := <<"foo">>, host := <<"example.com">>, path := <<"/">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"foo://example.com/?name=ferret">>),
+
+    #{path := <<>>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"?name=ferret">>),
+    #{path := <<"over/there">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"over/there?name=ferret">>),
+    #{path := <<"/">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"/?name=ferret">>),
+    #{path := <<"/over/there">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"/over/there?name=ferret">>),
+    #{host := <<"example.com">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"//example.com?name=ferret">>),
+    #{host := <<"example.com">>, path := <<"/">>, query := <<"name=ferret">>} =
+        uri_string:parse(<<"//example.com/?name=ferret">>).
+
+parse_binary_pct_encoded_query(_Config) ->
+    #{scheme := <<"foo">>, host := <<"example.com">>, path := <<"/">>,
+      query := <<"name=合気道"/utf8>>} =
+        uri_string:parse(<<"foo://example.com/?name=%E5%90%88%E6%B0%97%E9%81%93">>),
+    #{host := <<"example.com">>, path := <<"/">>, query := <<"name=合気道"/utf8>>} =
+        uri_string:parse(<<"//example.com/?name=%E5%90%88%E6%B0%97%E9%81%93">>).
+
+parse_binary_fragment(_Config) ->
+    #{scheme := <<"foo">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"foo:#nose">>),
+    #{scheme := <<"foo">>, path:= <<"over/there">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"foo:over/there#nose">>),
+    #{scheme := <<"foo">>, path:= <<"/over/there">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"foo:/over/there#nose">>),
+    #{scheme := <<"foo">>, host := <<"example.com">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"foo://example.com#nose">>),
+    #{scheme := <<"foo">>, host := <<"example.com">>, path := <<"/">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"foo://example.com/#nose">>),
+    #{scheme := <<"foo">>, host := <<"example.com">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"foo://example.com#nose">>),
+
+    #{fragment := <<"nose">>} =
+        uri_string:parse(<<"#nose">>),
+    #{path := <<"over/there">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"over/there#nose">>),
+    #{path := <<"/">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"/#nose">>),
+    #{path := <<"/over/there">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"/over/there#nose">>),
+    #{host := <<"example.com">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"//example.com#nose">>),
+    #{host := <<"example.com">>, path := <<"/">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"//example.com/#nose">>).
+
+parse_binary_pct_encoded_fragment(_Config) ->
+    #{scheme := <<"foo">>, host := <<"example.com">>, fragment := <<"合気道"/utf8>>} =
+        uri_string:parse(<<"foo://example.com#%E5%90%88%E6%B0%97%E9%81%93">>),
+    #{host := <<"example.com">>, path := <<"/">>, fragment := <<"合気道"/utf8>>} =
+        uri_string:parse(<<"//example.com/#%E5%90%88%E6%B0%97%E9%81%93">>).
+
+parse_scheme(_Config) ->
+    #{} = uri_string:parse(""),
+    #{path := "foo"} = uri_string:parse("foo"),
+    #{scheme := "foo"} = uri_string:parse("foo:"),
+    #{scheme := "foo", path := "bar:nisse"} = uri_string:parse("foo:bar:nisse"),
+    #{scheme := "foo", host := ""} = uri_string:parse("foo://"),
+    #{scheme := "foo", host := "", path := "/"} = uri_string:parse("foo:///"),
+    #{scheme := "foo", host := "", path := "//"} = uri_string:parse("foo:////"),
+
+    #{path := "/"} = uri_string:parse("/"),
+    #{host := ""} = uri_string:parse("//"),
+    #{host := "", path := "/"} = uri_string:parse("///").
+
+parse_userinfo(_Config) ->
+    #{scheme := "user", path := "password@localhost"} = uri_string:parse("user:password@localhost"),
+    #{path := "user@"} = uri_string:parse("user@"),
+    #{path := "/user@"} = uri_string:parse("/user@"),
+    #{path := "user@localhost"} = uri_string:parse("user@localhost"),
+    #{userinfo := "user", host := "localhost"} = uri_string:parse("//user@localhost"),
+    #{userinfo := "user:password", host := "localhost"} =
+        uri_string:parse("//user:password@localhost"),
+    #{scheme := "foo", path := "/user@"} =
+        uri_string:parse("foo:/user@"),
+    #{scheme := "foo", userinfo := "user", host := "localhost"} =
+        uri_string:parse("foo://user@localhost"),
+    #{scheme := "foo", userinfo := "user:password", host := "localhost"} =
+        uri_string:parse("foo://user:password@localhost").
+
+parse_pct_encoded_userinfo(_Config) ->
+    #{scheme := "user", path := "合@気道"} =
+        uri_string:parse("user:%E5%90%88@%E6%B0%97%E9%81%93"),
+    #{path := "合気道@"} = uri_string:parse("%E5%90%88%E6%B0%97%E9%81%93@"),
+    #{path := "/合気道@"} = uri_string:parse("/%E5%90%88%E6%B0%97%E9%81%93@"),
+    #{path := "合@気道"} = uri_string:parse("%E5%90%88@%E6%B0%97%E9%81%93"),
+    #{userinfo := "合", host := "気道"} =
+        uri_string:parse("//%E5%90%88@%E6%B0%97%E9%81%93"),
+    #{userinfo := "合:気", host := "道"} =
+        uri_string:parse("//%E5%90%88:%E6%B0%97@%E9%81%93"),
+    #{scheme := "foo", path := "/合気道@"} =
+        uri_string:parse("foo:/%E5%90%88%E6%B0%97%E9%81%93@"),
+    #{scheme := "foo", userinfo := "合", host := "気道"} =
+        uri_string:parse("foo://%E5%90%88@%E6%B0%97%E9%81%93"),
+    #{scheme := "foo", userinfo := "合:気", host := "道"} =
+        uri_string:parse("foo://%E5%90%88:%E6%B0%97@%E9%81%93"),
+    {error,invalid_uri,"@"} = uri_string:parse("//%E5%90%88@%E6%B0%97%E9%81%93@"),
+    {error,invalid_uri,":"} = uri_string:parse("foo://%E5%90%88@%E6%B0%97%E9%81%93@").
+
+
+parse_host(_Config) ->
+    #{host := "hostname"} = uri_string:parse("//hostname"),
+    #{host := "hostname",scheme := "foo"} = uri_string:parse("foo://hostname"),
+    #{host := "hostname",scheme := "foo", userinfo := "user"} =
+        uri_string:parse("foo://user@hostname").
+
+parse_host_ipv4(_Config) ->
+    #{host := "127.0.0.1"} = uri_string:parse("//127.0.0.1"),
+    #{host := "2001:0db8:0000:0000:0000:0000:1428:07ab"} =
+        uri_string:parse("//[2001:0db8:0000:0000:0000:0000:1428:07ab]"),
+    #{host := "127.0.0.1", path := "/over/there"} = uri_string:parse("//127.0.0.1/over/there"),
+    #{host := "127.0.0.1", query := "name=ferret"} = uri_string:parse("//127.0.0.1?name=ferret"),
+    #{host := "127.0.0.1", fragment := "nose"} = uri_string:parse("//127.0.0.1#nose"),
+    {error,invalid_uri,"x"} = uri_string:parse("//127.0.0.x"),
+    {error,invalid_uri,"1227.0.0.1"} = uri_string:parse("//1227.0.0.1").
+
+parse_host_ipv6(_Config) ->
+    #{host := "::127.0.0.1"} = uri_string:parse("//[::127.0.0.1]"),
+    #{host := "::127.0.0.1", path := "/over/there"} = uri_string:parse("//[::127.0.0.1]/over/there"),
+    #{host := "::127.0.0.1", query := "name=ferret"} =
+        uri_string:parse("//[::127.0.0.1]?name=ferret"),
+    #{host := "::127.0.0.1", fragment := "nose"} = uri_string:parse("//[::127.0.0.1]#nose"),
+    {error,invalid_uri,"x"} = uri_string:parse("//[::127.0.0.x]"),
+    {error,invalid_uri,"::1227.0.0.1"} = uri_string:parse("//[::1227.0.0.1]"),
+    {error,invalid_uri,"G"} = uri_string:parse("//[2001:0db8:0000:0000:0000:0000:1428:G7ab]").
+
+parse_port(_Config) ->
+    #{path:= "/:8042"} =
+        uri_string:parse("/:8042"),
+    #{host:= "", port := 8042} =
+        uri_string:parse("//:8042"),
+    #{host := "example.com", port:= 8042} =
+        uri_string:parse("//example.com:8042"),
+    #{scheme := "foo", path := "/:8042"} =
+        uri_string:parse("foo:/:8042"),
+    #{scheme := "foo", host := "", port := 8042} =
+        uri_string:parse("foo://:8042"),
+    #{scheme := "foo", host := "example.com", port := 8042} =
+        uri_string:parse("foo://example.com:8042").
+
+parse_path(_Config) ->
+    #{path := "over/there"} = uri_string:parse("over/there"),
+    #{path := "/over/there"} = uri_string:parse("/over/there"),
+    #{scheme := "foo", path := "/over/there"} =
+        uri_string:parse("foo:/over/there"),
+    #{scheme := "foo", host := "example.com", path := "/over/there"} =
+        uri_string:parse("foo://example.com/over/there"),
+    #{scheme := "foo", host := "example.com", path := "/over/there", port := 8042} =
+        uri_string:parse("foo://example.com:8042/over/there").
+
+parse_query(_Config) ->
+    #{scheme := "foo", query := "name=ferret"} =
+        uri_string:parse("foo:?name=ferret"),
+    #{scheme := "foo", path:= "over/there", query := "name=ferret"} =
+        uri_string:parse("foo:over/there?name=ferret"),
+    #{scheme := "foo", path:= "/over/there", query := "name=ferret"} =
+        uri_string:parse("foo:/over/there?name=ferret"),
+    #{scheme := "foo", host := "example.com", query := "name=ferret"} =
+        uri_string:parse("foo://example.com?name=ferret"),
+    #{scheme := "foo", host := "example.com", path := "/", query := "name=ferret"} =
+        uri_string:parse("foo://example.com/?name=ferret"),
+
+    #{path := "", query := "name=ferret"} =
+        uri_string:parse("?name=ferret"),
+    #{path := "over/there", query := "name=ferret"} =
+        uri_string:parse("over/there?name=ferret"),
+    #{path := "/", query := "name=ferret"} =
+        uri_string:parse("/?name=ferret"),
+    #{path := "/over/there", query := "name=ferret"} =
+        uri_string:parse("/over/there?name=ferret"),
+    #{host := "example.com", query := "name=ferret"} =
+        uri_string:parse("//example.com?name=ferret"),
+    #{host := "example.com", path := "/", query := "name=ferret"} =
+        uri_string:parse("//example.com/?name=ferret").
+
+parse_pct_encoded_query(_Config) ->
+    #{scheme := "foo", host := "example.com", path := "/",
+      query := "name=合気道"} =
+        uri_string:parse("foo://example.com/?name=%E5%90%88%E6%B0%97%E9%81%93"),
+    #{host := "example.com", path := "/", query := "name=合気道"} =
+        uri_string:parse("//example.com/?name=%E5%90%88%E6%B0%97%E9%81%93").
+
+parse_fragment(_Config) ->
+    #{scheme := "foo", fragment := "nose"} =
+        uri_string:parse("foo:#nose"),
+    #{scheme := "foo", path:= "over/there", fragment := "nose"} =
+        uri_string:parse("foo:over/there#nose"),
+    #{scheme := "foo", path:= "/over/there", fragment := "nose"} =
+        uri_string:parse("foo:/over/there#nose"),
+    #{scheme := "foo", host := "example.com", fragment := "nose"} =
+        uri_string:parse("foo://example.com#nose"),
+    #{scheme := "foo", host := "example.com", path := "/", fragment := "nose"} =
+        uri_string:parse("foo://example.com/#nose"),
+    #{scheme := "foo", host := "example.com", fragment := "nose"} =
+        uri_string:parse("foo://example.com#nose"),
+
+    #{fragment := "nose"} =
+        uri_string:parse("#nose"),
+    #{path := "over/there", fragment := "nose"} =
+        uri_string:parse("over/there#nose"),
+    #{path := "/", fragment := "nose"} =
+        uri_string:parse("/#nose"),
+    #{path := "/over/there", fragment := "nose"} =
+        uri_string:parse("/over/there#nose"),
+    #{host := "example.com", fragment := "nose"} =
+        uri_string:parse("//example.com#nose"),
+    #{host := "example.com", path := "/", fragment := "nose"} =
+        uri_string:parse("//example.com/#nose").
+
+parse_pct_encoded_fragment(_Config) ->
+    #{scheme := "foo", host := "example.com", fragment := "合気道"} =
+        uri_string:parse("foo://example.com#%E5%90%88%E6%B0%97%E9%81%93"),
+    #{host := "example.com", path := "/", fragment := "合気道"} =
+        uri_string:parse("//example.com/#%E5%90%88%E6%B0%97%E9%81%93").
+
+parse_list(_Config) ->
+    #{scheme := "foo", path := "bar:nisse"} = uri_string:parse("foo:bar:nisse"),
+    #{scheme := "foo", host := "example.com", port := 8042,
+      path := "/over/there", query := "name=ferret", fragment := "nose"} =
+        uri_string:parse("foo://example.com:8042/over/there?name=ferret#nose"),
+    #{scheme := "foo", userinfo := "admin:admin", host := "example.com", port := 8042,
+      path := "/over/there", query := "name=ferret", fragment := "nose"} =
+        uri_string:parse("foo://admin:[email protected]:8042/over/there?name=ferret#nose").
+
+parse_binary(_Config) ->
+    #{scheme := <<"foo">>, path := <<"bar:nisse">>} = uri_string:parse(<<"foo:bar:nisse">>),
+    #{scheme := <<"foo">>, host := <<"example.com">>, port := 8042,
+      path := <<"/over/there">>, query := <<"name=ferret">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"foo://example.com:8042/over/there?name=ferret#nose">>),
+    #{scheme := <<"foo">>, userinfo := <<"admin:admin">>, host := <<"example.com">>, port := 8042,
+      path := <<"/over/there">>, query := <<"name=ferret">>, fragment := <<"nose">>} =
+        uri_string:parse(<<"foo://admin:[email protected]:8042/over/there?name=ferret#nose">>).
+
+
+parse_mixed(_Config) ->
+    #{scheme := "foo", path := "bar"} =
+        uri_string:parse(lists:append("fo",<<"o:bar">>)),
+    #{scheme := "foo", path := "bar"} =
+        uri_string:parse(lists:append("foo:b",<<"ar">>)),
+    #{scheme := "foo", path := "bar:bar"} =
+        uri_string:parse([[102],[111,111],<<":bar">>,58,98,97,114]).
+
+parse_relative(_Config) ->
+    #{path := "/path"} =
+        uri_string:parse(lists:append("/pa",<<"th">>)),
+    #{path := "foo"} =
+        uri_string:parse(lists:append("fo",<<"o">>)).
+
+parse_special(_Config) ->
+    #{host := [],query := []} = uri_string:parse("//?"),
+    #{fragment := [],host := []} = uri_string:parse("//#"),
+    #{host := [],query := [],scheme := "foo"} = uri_string:parse("foo://?"),
+    #{fragment := [],host := [],scheme := "foo"} = uri_string:parse("foo://#"),
+    #{host := <<>>, path := <<"/">>} = uri_string:parse(<<"///">>),
+    #{host := <<"hostname">>} = uri_string:parse(<<"//hostname">>),
+    #{host := <<>>, path := <<"/hostname">>} = uri_string:parse(<<"///hostname">>),
+    #{host :=  [],path := "/",query := []} = uri_string:parse("///?"),
+    #{fragment := [],host := [],path := "/"} = uri_string:parse("///#"),
+    #{host := "foo",query := []} = uri_string:parse("//foo?"),
+    #{fragment := [],host := "foo"} = uri_string:parse("//foo#"),
+    #{host := "foo",path := "/"} = uri_string:parse("//foo/"),
+    #{host := "foo",query := [],scheme := "http"} = uri_string:parse("http://foo?"),
+    #{fragment := [],host := "foo",scheme := "http"} = uri_string:parse("http://foo#"),
+    #{host := "foo",path := "/",scheme := "http"} = uri_string:parse("http://foo/"),
+    #{fragment := [],host := "host",port := 80,scheme := "http"} = uri_string:parse("http://host:80#"),
+    #{host := "host",port := 80,query := [],scheme := "http"} = uri_string:parse("http://host:80?"),
+    #{path := [],query := []} = uri_string:parse("?"),
+    #{path := [],query := "?"} = uri_string:parse("??"),
+    #{path := [],query := "??"} = uri_string:parse("???").
+
+parse_special2(_Config) ->
+    #{host := [],path := "/",port := 1,scheme := "a"} = uri_string:parse("a://:1/"),
+    #{path := "/a/",scheme := "a"} = uri_string:parse("a:/a/"),
+    #{host := [],path := [],userinfo := []} = uri_string:parse("//@"),
+    #{host := [],path := [],scheme := "foo",userinfo := []} = uri_string:parse("foo://@"),
+    #{host := [],path := "/",userinfo := []} = uri_string:parse("//@/"),
+    #{host := [],path := "/",scheme := "foo",userinfo := []} = uri_string:parse("foo://@/"),
+    #{host := "localhost",path := "/",port := undefined} = uri_string:parse("//localhost:/"),
+    #{host := [],path := [],port := undefined} = uri_string:parse("//:").
+
+parse_negative(_Config) ->
+    {error,invalid_uri,"å"} = uri_string:parse("å"),
+    {error,invalid_uri,"å"} = uri_string:parse("aå:/foo"),
+    {error,invalid_uri,":"} = uri_string:parse("foo://usär@host"),
+    {error,invalid_uri,"ö"} = uri_string:parse("//host/path?foö=bar"),
+    {error,invalid_uri,"ö"} = uri_string:parse("//host/path#foö"),
+    {error,invalid_uri,"127.256.0.1"} = uri_string:parse("//127.256.0.1"),
+    {error,invalid_uri,":::127.0.0.1"} = uri_string:parse("//[:::127.0.0.1]"),
+    {error,invalid_utf8,<<0,0,0,246>>} = uri_string:parse("//%00%00%00%F6"),
+    {error,invalid_uri,"A"} = uri_string:parse("//localhost:A8").
+
+
+%%-------------------------------------------------------------------------
+%% Recompose tests
+%%-------------------------------------------------------------------------
+recompose_fragment(_Config) ->
+    <<?FRAGMENT_ENC>> = uri_string:recompose(#{fragment => <<?FRAGMENT/utf8>>, path => <<>>}),
+    ?FRAGMENT_ENC = uri_string:recompose(#{fragment => ?FRAGMENT, path => ""}).
+
+recompose_parse_fragment(_Config) ->
+    <<?FRAGMENT_ENC>> = uri_string:recompose(uri_string:parse(<<?FRAGMENT_ENC>>)),
+    ?FRAGMENT_ENC = uri_string:recompose(uri_string:parse(?FRAGMENT_ENC)).
+
+recompose_query(_Config) ->
+    <<?QUERY_ENC>> =
+        uri_string:recompose(#{query => <<?QUERY/utf8>>, path => <<>>}),
+    <<?QUERY_ENC?FRAGMENT_ENC>> =
+        uri_string:recompose(#{query => <<?QUERY/utf8>>,
+                               fragment => <<?FRAGMENT/utf8>>,
+                               path => <<>>}),
+    "?name=%C3%B6rn" =
+        uri_string:recompose(#{query => "name=örn", path => ""}),
+    "?name=%C3%B6rn#n%C3%A4sa" =
+        uri_string:recompose(#{query => "name=örn",
+                               fragment => "näsa",
+                               path => ""}).
+
+recompose_parse_query(_Config) ->
+    <<"?name=%C3%B6rn">> = uri_string:recompose(uri_string:parse(<<"?name=%C3%B6rn">>)),
+    <<"?name=%C3%B6rn#n%C3%A4sa">> =
+        uri_string:recompose(uri_string:parse(<<"?name=%C3%B6rn#n%C3%A4sa">>)),
+    "?name=%C3%B6rn" = uri_string:recompose(uri_string:parse("?name=%C3%B6rn")),
+    "?name=%C3%B6rn#n%C3%A4sa" = uri_string:recompose(uri_string:parse("?name=%C3%B6rn#n%C3%A4sa")).
+
+recompose_path(_Config) ->
+    <<"/d%C3%A4r">> =
+        uri_string:recompose(#{path => <<"/där"/utf8>>}),
+    <<"/d%C3%A4r#n%C3%A4sa">> =
+        uri_string:recompose(#{path => <<"/där"/utf8>>,
+                               fragment => <<"näsa"/utf8>>}),
+    <<"/d%C3%A4r?name=%C3%B6rn">> =
+        uri_string:recompose(#{path => <<"/där"/utf8>>,
+                               query => <<"name=örn"/utf8>>}),
+    <<"/d%C3%A4r?name=%C3%B6rn#n%C3%A4sa">> =
+        uri_string:recompose(#{path => <<"/där"/utf8>>,
+                               query => <<"name=örn"/utf8>>,
+                               fragment => <<"näsa"/utf8>>}),
+
+
+    "/d%C3%A4r" =
+        uri_string:recompose(#{path => "/där"}),
+    "/d%C3%A4r#n%C3%A4sa" =
+        uri_string:recompose(#{path => "/där",
+                               fragment => "näsa"}),
+    "/d%C3%A4r?name=%C3%B6rn" =
+        uri_string:recompose(#{path => "/där",
+                               query => "name=örn"}),
+    "/d%C3%A4r?name=%C3%B6rn#n%C3%A4sa" =
+        uri_string:recompose(#{path => "/där",
+                               query => "name=örn",
+                               fragment => "näsa"}).
+
+
+recompose_parse_path(_Config) ->
+    <<"/d%C3%A4r">> =
+        uri_string:recompose(uri_string:parse(<<"/d%C3%A4r">>)),
+    <<"/d%C3%A4r#n%C3%A4sa">> =
+        uri_string:recompose(uri_string:parse(<<"/d%C3%A4r#n%C3%A4sa">>)),
+    <<"/d%C3%A4r?name=%C3%B6rn">> =
+        uri_string:recompose(uri_string:parse(<<"/d%C3%A4r?name=%C3%B6rn">>)),
+
+    "/d%C3%A4r" =
+        uri_string:recompose(uri_string:parse("/d%C3%A4r")),
+    "/d%C3%A4r#n%C3%A4sa" =
+        uri_string:recompose(uri_string:parse("/d%C3%A4r#n%C3%A4sa")),
+    "/d%C3%A4r?name=%C3%B6rn" =
+        uri_string:recompose(uri_string:parse("/d%C3%A4r?name=%C3%B6rn")).
+
+
+recompose_autogen(_Config) ->
+    Tests = generate_test_vectors(uri_combinations()),
+    lists:map(fun run_test_recompose/1, Tests).
+
+parse_recompose_autogen(_Config) ->
+    Tests = generate_test_vectors(uri_combinations()),
+    lists:map(fun run_test_parse_recompose/1, Tests).
+
+transcode_basic(_Config) ->
+    <<"foo%C3%B6bar"/utf8>> =
+        uri_string:transcode(<<"foo%00%00%00%F6bar"/utf32>>, [{in_encoding, utf32},{out_encoding, utf8}]),
+    "foo%C3%B6bar" =
+        uri_string:transcode("foo%00%00%00%F6bar", [{in_encoding, utf32},{out_encoding, utf8}]),
+    <<"foo%00%00%00%F6bar"/utf32>> =
+        uri_string:transcode(<<"foo%C3%B6bar"/utf8>>, [{in_encoding, utf8},{out_encoding, utf32}]),
+    "foo%00%00%00%F6bar" =
+        uri_string:transcode("foo%C3%B6bar", [{in_encoding, utf8},{out_encoding, utf32}]),
+    "foo%C3%B6bar" =
+        uri_string:transcode("foo%F6bar", [{in_encoding, latin1},{out_encoding, utf8}]).
+
+transcode_options(_Config) ->
+    <<"foo%C3%B6bar"/utf8>> =
+        uri_string:transcode(<<"foo%C3%B6bar"/utf8>>, []),
+    <<"foo%C3%B6bar"/utf8>> =
+        uri_string:transcode(<<"foo%00%00%00%F6bar"/utf32>>, [{in_encoding, utf32}]),
+    <<"foo%00%00%00%F6bar"/utf32>> =
+        uri_string:transcode(<<"foo%C3%B6bar"/utf8>>, [{out_encoding, utf32}]).
+
+transcode_mixed(_Config) ->
+    "foo%00%00%00%F6bar" =
+        uri_string:transcode(["foo",<<"%C3%B6"/utf8>>,<<"ba"/utf8>>,"r"], [{out_encoding, utf32}]),
+    "foo%00%00%00%F6bar" =
+        uri_string:transcode(["foo",<<"%C3%"/utf8>>,<<"B6ba"/utf8>>,"r"], [{out_encoding, utf32}]),
+    "foo%C3%B6bar" =
+        uri_string:transcode(["foo%00", <<"%00%0"/utf32>>,<<"0%F"/utf32>>,"6bar"], [{in_encoding, utf32},{out_encoding, utf8}]).
+
+transcode_negative(_Config) ->
+    {error,invalid_percent_encoding,"%BXbar"} =
+        uri_string:transcode(<<"foo%C3%BXbar"/utf8>>, [{in_encoding, utf8},{out_encoding, utf32}]),
+    {error,invalid_input,<<"ö">>} =
+        uri_string:transcode("foo%F6bar", [{in_encoding, utf8},{out_encoding, utf8}]).
+
+compose_query(_Config) ->
+    [] = uri_string:compose_query([]),
+    "foo=1&bar=2" = uri_string:compose_query([{<<"foo">>,"1"}, {"bar", "2"}]),
+    "foo=1&b%C3%A4r=2" = uri_string:compose_query([{"foo","1"}, {"bär", "2"}],[{encoding,utf8}]),
+    "foo=1&b%C3%A4r=2" = uri_string:compose_query([{"foo","1"}, {"bär", "2"}],[{encoding,unicode}]),
+    "foo=1&b%E4r=2" = uri_string:compose_query([{"foo","1"}, {"bär", "2"}],[{encoding,latin1}]),
+    "foo+bar=1&%E5%90%88=2" = uri_string:compose_query([{"foo bar","1"}, {"合", "2"}]),
+    "foo+bar=1&%26%2321512%3B=2" =
+        uri_string:compose_query([{"foo bar","1"}, {"合", "2"}],[{encoding,latin1}]),
+    "foo+bar=1&%C3%B6=2" = uri_string:compose_query([{<<"foo bar">>,<<"1">>}, {"ö", <<"2">>}]),
+    <<"foo+bar=1&%C3%B6=2">> =
+        uri_string:compose_query([{<<"foo bar">>,<<"1">>}, {<<"ö"/utf8>>, <<"2">>}]).
+
+compose_query_latin1(_Config) ->
+    Q = uri_string:compose_query([{"合foö bar","1"}, {"合", "合"}],[{encoding,latin1}]),
+    Q1 = uri_string:transcode(Q, [{in_encoding, latin1}]),
+    [{"合foö bar","1"}, {"合", "合"}] = uri_string:dissect_query(Q1),
+    Q2 = uri_string:compose_query([{<<"合foö bar"/utf8>>,<<"1">>}, {<<"合"/utf8>>, <<"合"/utf8>>}],
+                                  [{encoding,latin1}]),
+    Q3 = uri_string:transcode(Q2, [{in_encoding, latin1}]),
+    [{<<"合foö bar"/utf8>>,<<"1">>}, {<<"合"/utf8>>, <<"合"/utf8>>}] =
+        uri_string:dissect_query(Q3).
+
+compose_query_negative(_Config) ->
+    {error,invalid_input,4} = uri_string:compose_query([{"",4}]),
+    {error,invalid_input,5} = uri_string:compose_query([{5,""}]),
+    {error,invalid_encoding,utf16} =
+        uri_string:compose_query([{"foo bar","1"}, {<<"ö">>, "2"}],[{encoding,utf16}]).
+
+dissect_query(_Config) ->
+    [] = uri_string:dissect_query(""),
+    [{"foo","1"}, {"amp;bar", "2"}] = uri_string:dissect_query("foo=1&amp;bar=2"),
+    [{"foo","1"}, {"bar", "2"}] = uri_string:dissect_query("foo=1&bar=2"),
+    [{"foo","1;bar=2"}] = uri_string:dissect_query("foo=1;bar=2"),
+    [{"foo","1"}, {"bar", "222"}] = uri_string:dissect_query([<<"foo=1&bar=2">>,"22"]),
+    [{"foo","ö"}, {"bar", "2"}] = uri_string:dissect_query("foo=%C3%B6&bar=2"),
+    [{<<"foo">>,<<"ö"/utf8>>}, {<<"bar">>, <<"2">>}] =
+        uri_string:dissect_query(<<"foo=%C3%B6&bar=2">>),
+    [{"foo bar","1"},{"ö","2"}] =
+        uri_string:dissect_query([<<"foo+bar=1&">>,<<"%C3%B6=2">>]),
+    [{"foo bar","1"},{[21512],"2"}] =
+        uri_string:dissect_query("foo+bar=1&%26%2321512%3B=2"),
+    [{<<"foo bar">>,<<"1">>},{<<"合"/utf8>>,<<"2">>}] =
+        uri_string:dissect_query(<<"foo+bar=1&%26%2321512%3B=2">>),
+    [{"föo bar","1"},{"ö","2"}] =
+        uri_string:dissect_query("föo+bar=1&%C3%B6=2"),
+    [{<<"föo bar"/utf8>>,<<"1">>},{<<"ö"/utf8>>,<<"2">>}] =
+        uri_string:dissect_query(<<"föo+bar=1&%C3%B6=2"/utf8>>).
+
+dissect_query_negative(_Config) ->
+    {error,missing_value,"&"} =
+        uri_string:dissect_query("foo1&bar=2"),
+    {error,invalid_percent_encoding,"%XX%B6"} = uri_string:dissect_query("foo=%XX%B6&amp;bar=2"),
+    {error,invalid_input,[153]} =
+        uri_string:dissect_query("foo=%99%B6&amp;bar=2"),
+    {error,invalid_character,"ö"} = uri_string:dissect_query(<<"föo+bar=1&%C3%B6=2">>),
+    {error,invalid_input,<<"ö">>} =
+        uri_string:dissect_query([<<"foo+bar=1&amp;">>,<<"%C3%B6=2ö">>]).
+
+normalize(_Config) ->
+    "/a/g" = uri_string:normalize("/a/b/c/./../../g"),
+    <<"mid/6">> = uri_string:normalize(<<"mid/content=5/../6">>),
+    "http://localhost-%C3%B6rebro/a/g" =
+        uri_string:normalize("http://localhos%74-%c3%b6rebro:80/a/b/c/./../../g"),
+    <<"http://localhost-%C3%B6rebro/a/g">> =
+        uri_string:normalize(<<"http://localhos%74-%c3%b6rebro:80/a/b/c/./../../g">>),
+    <<"https://localhost/">> =
+        uri_string:normalize(<<"https://localhost:443">>),
+    <<"https://localhost:445/">> =
+        uri_string:normalize(<<"https://localhost:445">>),
+    <<"ftp://localhost">> =
+        uri_string:normalize(<<"ftp://localhost:21">>),
+    <<"ssh://localhost">> =
+        uri_string:normalize(<<"ssh://localhost:22">>),
+    <<"sftp://localhost">> =
+        uri_string:normalize(<<"sftp://localhost:22">>),
+    <<"tftp://localhost">> =
+        uri_string:normalize(<<"tftp://localhost:69">>).
+
+interop_query_utf8(_Config) ->
+    Q = uri_string:compose_query([{"foo bar","1"}, {"合", "2"}]),
+    Uri = uri_string:recompose(#{path => "/", query => Q}),
+    #{query := Q1} = uri_string:parse(Uri),
+    [{"foo bar","1"}, {"合", "2"}] = uri_string:dissect_query(Q1).
+
+interop_query_latin1(_Config) ->
+    Q = uri_string:compose_query([{"foo bar","1"}, {"合", "2"}], [{encoding,latin1}]),
+    Uri = uri_string:recompose(#{path => "/", query => Q}),
+    Uri1 = uri_string:transcode(Uri, [{in_encoding, latin1}]),
+    #{query := Q1} = uri_string:parse(Uri1),
+    [{"foo bar","1"}, {"合", "2"}] = uri_string:dissect_query(Q1).
diff --git a/lib/stdlib/test/uri_string_property_test_SUITE.erl b/lib/stdlib/test/uri_string_property_test_SUITE.erl
new file mode 100644
index 0000000000..ae2c61c7aa
--- /dev/null
+++ b/lib/stdlib/test/uri_string_property_test_SUITE.erl
@@ -0,0 +1,39 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2008-2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(uri_string_property_test_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+-compile(export_all).
+
+all() -> [recompose].
+
+init_per_suite(Config) ->
+    ct_property_test:init_per_suite(Config).
+
+end_per_suite(Config) ->
+    Config.
+
+%%%========================================================================
+%%% Test suites
+%%%========================================================================
+recompose(Config) ->
+    ct_property_test:quickcheck(
+      uri_string_recompose:prop_recompose(),
+      Config).
diff --git a/lib/stdlib/uc_spec/gen_unicode_mod.escript b/lib/stdlib/uc_spec/gen_unicode_mod.escript
index 674e5a0628..fe5a860d45 100755
--- a/lib/stdlib/uc_spec/gen_unicode_mod.escript
+++ b/lib/stdlib/uc_spec/gen_unicode_mod.escript
@@ -170,7 +170,7 @@ gen_header(Fd) ->
     io:put_chars(Fd, "-export([spec_version/0, lookup/1, get_case/1]).\n"),
     io:put_chars(Fd, "-inline([class/1]).\n"),
     io:put_chars(Fd, "-compile(nowarn_unused_vars).\n"),
-    io:put_chars(Fd, "-dialyzer({no_improper_lists, [cp/1, gc_prepend/2, gc_e_cont/2]}).\n"),
+    io:put_chars(Fd, "-dialyzer({no_improper_lists, [cp/1, gc/1, gc_prepend/2, gc_e_cont/2]}).\n"),
     io:put_chars(Fd, "-type gc() :: char()|[char()].\n\n\n"),
     ok.
 
@@ -240,7 +240,7 @@ gen_norm(Fd) ->
                  "-spec nfd(unicode:chardata()) -> maybe_improper_list(gc(),unicode:chardata()) | {error, unicode:chardata()}.\n"
                  "nfd(Str0) ->\n"
                  "    case gc(Str0) of\n"
-                 "        [GC|R] when GC < 127 -> [GC|R];\n"
+                 "        [GC|R] when GC < 128 -> [GC|R];\n"
                  "        [GC|Str] -> [decompose(GC)|Str];\n"
                  "        [] -> [];\n"
                  "        {error,_}=Error -> Error\n    end.\n\n"
@@ -250,7 +250,7 @@ gen_norm(Fd) ->
                  "-spec nfkd(unicode:chardata()) -> maybe_improper_list(gc(),unicode:chardata()) | {error, unicode:chardata()}.\n"
                  "nfkd(Str0) ->\n"
                  "    case gc(Str0) of\n"
-                 "        [GC|R] when GC < 127 -> [GC|R];\n"
+                 "        [GC|R] when GC < 128 -> [GC|R];\n"
                  "        [GC|Str] -> [decompose_compat(GC)|Str];\n"
                  "        [] -> [];\n"
                  "        {error,_}=Error -> Error\n    end.\n\n"
@@ -260,7 +260,7 @@ gen_norm(Fd) ->
                  "-spec nfc(unicode:chardata()) -> maybe_improper_list(gc(),unicode:chardata()) | {error, unicode:chardata()}.\n"
                  "nfc(Str0) ->\n"
                  "    case gc(Str0) of\n"
-                 "        [GC|R] when GC < 255 -> [GC|R];\n"
+                 "        [GC|R] when GC < 256 -> [GC|R];\n"
                  "        [GC|Str] -> [compose(decompose(GC))|Str];\n"
                  "        [] -> [];\n"
                  "        {error,_}=Error -> Error\n    end.\n\n"
@@ -270,7 +270,7 @@ gen_norm(Fd) ->
                  "-spec nfkc(unicode:chardata()) -> maybe_improper_list(gc(),unicode:chardata()) | {error, unicode:chardata()}.\n"
                  "nfkc(Str0) ->\n"
                  "    case gc(Str0) of\n"
-                 "        [GC|R] when GC < 127 -> [GC|R];\n"
+                 "        [GC|R] when GC < 128 -> [GC|R];\n"
                  "        [GC|Str] -> [compose_compat_0(decompose_compat(GC))|Str];\n"
                  "        [] -> [];\n"
                  "        {error,_}=Error -> Error\n    end.\n\n"
@@ -476,13 +476,30 @@ gen_gc(Fd, GBP) ->
                  "-spec gc(String::unicode:chardata()) ->"
                  " maybe_improper_list() | {error, unicode:chardata()}.\n"),
     io:put_chars(Fd,
+                 "gc([CP1, CP2|_]=T)\n"
+                 "  when CP1 < 256, CP2 < 256, CP1 =/= $\r -> %% Ascii Fast path\n"
+                 "       T;\n"
+                 "gc(<<CP1/utf8, Rest/binary>>) ->\n"
+                 "    if CP1 < 256, CP1 =/= $\r ->\n"
+                 "           case Rest of\n"
+                 "               <<CP2/utf8, _/binary>> when CP2 < 256 -> %% Ascii Fast path\n"
+                 "                   [CP1|Rest];\n"
+                 "               _ -> gc_1([CP1|Rest])\n"
+                 "           end;\n"
+                 "      true -> gc_1([CP1|Rest])\n"
+                 "    end;\n"
                  "gc(Str) ->\n"
                  "    gc_1(cp(Str)).\n\n"
                  "gc_1([$\\r|R0] = R) ->\n"
                  "    case cp(R0) of % Don't break CRLF\n"
                  "        [$\\n|R1] -> [[$\\r,$\\n]|R1];\n"
                  "        _ -> R\n"
-                 "    end;\n"),
+                 "    end;\n"
+                 %% "gc_1([CP1, CP2|_]=T) when CP1 < 256, CP2 < 256 ->\n"
+                 %% "    T;  %% Fast path\n"
+                 %% "gc_1([CP1|<<CP2/utf8, _/binary>>]=T) when CP1 < 256, CP2 < 256 ->\n"
+                 %% "    T;  %% Fast path\n"
+                ),
 
     io:put_chars(Fd, "%% Handle control\n"),
     GenControl = fun(Range) -> io:format(Fd, "gc_1~s R0;\n", [gen_clause(Range)]) end,
@@ -490,7 +507,7 @@ gen_gc(Fd, GBP) ->
     [R1,R2,R3|Crs] = CRs0,
     [GenControl(CP) || CP <- merge_ranges([R1,R2,R3], split), CP =/= {$\r, undefined}],
     %%GenControl(R1),GenControl(R2),GenControl(R3),
-    io:format(Fd, "gc_1([CP|R]) when CP < 255 -> gc_extend(R,CP);\n", []),
+    io:format(Fd, "gc_1([CP|R]) when CP < 256 -> gc_extend(R,CP);\n", []),
     [GenControl(CP) || CP <- Crs],
     %% One clause per CP
     %% CRs0 = merge_ranges(maps:get(cr, GBP) ++ maps:get(lf, GBP) ++ maps:get(control, GBP)),
diff --git a/lib/stdlib/vsn.mk b/lib/stdlib/vsn.mk
index 48db5dc900..69d258c2f0 100644
--- a/lib/stdlib/vsn.mk
+++ b/lib/stdlib/vsn.mk
@@ -1 +1 @@
-STDLIB_VSN = 3.4.2
+STDLIB_VSN = 3.4.3
diff --git a/lib/syntax_tools/doc/src/Makefile b/lib/syntax_tools/doc/src/Makefile
index e55222e59c..1ce620b3d6 100644
--- a/lib/syntax_tools/doc/src/Makefile
+++ b/lib/syntax_tools/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 2006-2016. All Rights Reserved.
+# Copyright Ericsson AB 2006-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -55,7 +55,7 @@ XML_REF3_FILES = \
 	merl_transform.xml \
 	prettypr.xml
 
-XML_PART_FILES = part.xml part_notes.xml
+XML_PART_FILES = part.xml
 XML_CHAPTER_FILES = chapter.xml
 XML_NOTES_FILES = notes.xml
 
@@ -86,11 +86,11 @@ SPECS_FILES = $(XML_REF3_FILES:%.xml=$(SPECDIR)/specs_%.xml)
 TOP_SPECS_FILE = specs.xml
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 SPECS_FLAGS = -I../../include
-DVIPS_FLAGS += 
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -112,13 +112,13 @@ $(XML_REF3_FILES):
 	escript $(DOCGEN)/priv/bin/xml_from_edoc.escript $(SRC_DIR)/$(@:%.xml=%.erl)
 
 $(XML_CHAPTER_FILES):
-	escript $(DOCGEN)/priv/bin/xml_from_edoc.escript -def vsn $(VSN) -chapter ../overview.edoc 
+	escript $(DOCGEN)/priv/bin/xml_from_edoc.escript -def vsn $(VSN) -chapter ../overview.edoc
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
 xml: $(XML_REF3_FILES) $(XML_CHAPTER_FILES)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
@@ -126,11 +126,11 @@ clean clean_docs:
 	rm -f $(XML_REF3_FILES) $(XML_CHAPTER_FILES) *.html
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
 	rm -f $(SPECDIR)/*
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
diff --git a/lib/syntax_tools/doc/src/fascicules.xml b/lib/syntax_tools/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/syntax_tools/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/syntax_tools/doc/src/notes.xml b/lib/syntax_tools/doc/src/notes.xml
index 8c91f01e3b..bd2bcde2c2 100644
--- a/lib/syntax_tools/doc/src/notes.xml
+++ b/lib/syntax_tools/doc/src/notes.xml
@@ -32,6 +32,21 @@
   <p>This document describes the changes made to the Syntax_Tools
     application.</p>
 
+<section><title>Syntax_Tools 2.1.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Syntax_Tools 2.1.3</title>
 
     <section><title>Improvements and New Features</title>
diff --git a/lib/syntax_tools/doc/src/part_notes.xml b/lib/syntax_tools/doc/src/part_notes.xml
deleted file mode 100644
index e02ffddcb2..0000000000
--- a/lib/syntax_tools/doc/src/part_notes.xml
+++ /dev/null
@@ -1,42 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2007</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Syntax_Tools Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p><em>Syntax_Tools</em> contains modules for handling abstract
-      Erlang syntax trees, in a way that is compatible with the "parse
-      trees" of the STDLIB module <c>erl_parse</c>, together with
-      utilities for reading source files in unusual ways and
-      pretty-printing syntax trees. Also included is an amazing module
-      merger and renamer called Igor, as well as an automatic
-      code-cleaner.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/syntax_tools/src/erl_prettypr.erl b/lib/syntax_tools/src/erl_prettypr.erl
index 40ddd2b22a..f03f326278 100644
--- a/lib/syntax_tools/src/erl_prettypr.erl
+++ b/lib/syntax_tools/src/erl_prettypr.erl
@@ -774,9 +774,17 @@ lay_2(Node, Ctxt) ->
 	class_qualifier ->
 	    Ctxt1 = set_prec(Ctxt, max_prec()),
 	    D1 = lay(erl_syntax:class_qualifier_argument(Node), Ctxt1),
-	    D2 = lay(erl_syntax:class_qualifier_body(Node), Ctxt1),
-	    beside(D1, beside(text(":"), D2));
-
+            D2 = lay(erl_syntax:class_qualifier_body(Node), Ctxt1),
+            Stacktrace = erl_syntax:class_qualifier_stacktrace(Node),
+            case erl_syntax:variable_name(Stacktrace) of
+                '_' ->
+                    beside(D1, beside(text(":"), D2));
+                _ ->
+                    D3 = lay(erl_syntax:class_qualifier_stacktrace(Node),
+                             Ctxt1),
+                    beside(D1, beside(beside(text(":"), D2),
+                                      beside(text(":"), D3)))
+            end;
 	comment ->
 	    D = stack_comment_lines(
 		  erl_syntax:comment_text(Node)),
diff --git a/lib/syntax_tools/src/erl_syntax.erl b/lib/syntax_tools/src/erl_syntax.erl
index 9b2b503762..ed552b73df 100644
--- a/lib/syntax_tools/src/erl_syntax.erl
+++ b/lib/syntax_tools/src/erl_syntax.erl
@@ -342,8 +342,10 @@
 	 typed_record_field_body/1,
          typed_record_field_type/1,
 	 class_qualifier/2,
+	 class_qualifier/3,
 	 class_qualifier_argument/1,
 	 class_qualifier_body/1,
+	 class_qualifier_stacktrace/1,
 	 tuple/1,
 	 tuple_elements/1,
 	 tuple_size/1,
@@ -3884,7 +3886,7 @@ fold_try_clause({clause, Pos, [P], Guard, Body}) ->
 	     class_qualifier ->
 		 {tuple, Pos, [class_qualifier_argument(P),
 			       class_qualifier_body(P),
-			       {var, Pos, '_'}]};
+			       class_qualifier_stacktrace(P)]};
 	     _ ->
 		 {tuple, Pos, [{atom, Pos, throw}, P, {var, Pos, '_'}]}
 	 end,
@@ -3896,9 +3898,9 @@ unfold_try_clauses(Cs) ->
 unfold_try_clause({clause, Pos, [{tuple, _, [{atom, _, throw}, V, _]}],
 		   Guard, Body}) ->
     {clause, Pos, [V], Guard, Body};
-unfold_try_clause({clause, Pos, [{tuple, _, [C, V, _]}],
+unfold_try_clause({clause, Pos, [{tuple, _, [C, V, Stacktrace]}],
 		   Guard, Body}) ->
-    {clause, Pos, [class_qualifier(C, V)], Guard, Body}.
+    {clause, Pos, [class_qualifier(C, V, Stacktrace)], Guard, Body}.
 
 
 %% =====================================================================
@@ -6725,9 +6727,12 @@ try_expr_after(Node) ->
 %%
 %% @see class_qualifier_argument/1
 %% @see class_qualifier_body/1
+%% @see class_qualifier_stacktrace/1
 %% @see try_expr/4
 
--record(class_qualifier, {class :: syntaxTree(), body :: syntaxTree()}).
+-record(class_qualifier, {class :: syntaxTree(),
+                          body :: syntaxTree(),
+                          stacktrace :: syntaxTree()}).
 
 %% type(Node) = class_qualifier
 %% data(Node) = #class_qualifier{class :: Class, body :: Body}
@@ -6737,8 +6742,27 @@ try_expr_after(Node) ->
 -spec class_qualifier(syntaxTree(), syntaxTree()) -> syntaxTree().
 
 class_qualifier(Class, Body) ->
+    Underscore = {var, get_pos(Body), '_'},
     tree(class_qualifier,
-	 #class_qualifier{class = Class, body = Body}).
+	 #class_qualifier{class = Class, body = Body,
+                          stacktrace = Underscore}).
+
+%% =====================================================================
+%% @doc Creates an abstract class qualifier. The result represents
+%% "<code><em>Class</em>:<em>Body</em>:<em>Stacktrace</em></code>".
+%%
+%% @see class_qualifier_argument/1
+%% @see class_qualifier_body/1
+%% @see try_expr/4
+
+-spec class_qualifier(syntaxTree(), syntaxTree(), syntaxTree()) ->
+                             syntaxTree().
+
+class_qualifier(Class, Body, Stacktrace) ->
+    tree(class_qualifier,
+	 #class_qualifier{class = Class,
+                          body = Body,
+                          stacktrace = Stacktrace}).
 
 
 %% =====================================================================
@@ -6763,6 +6787,16 @@ class_qualifier_argument(Node) ->
 class_qualifier_body(Node) ->
     (data(Node))#class_qualifier.body.
 
+%% =====================================================================
+%% @doc Returns the stacktrace subtree of a `class_qualifier' node.
+%%
+%% @see class_qualifier/2
+
+-spec class_qualifier_stacktrace(syntaxTree()) -> syntaxTree().
+
+class_qualifier_stacktrace(Node) ->
+    (data(Node))#class_qualifier.stacktrace.
+
 
 %% =====================================================================
 %% @doc Creates an abstract "implicit fun" expression. If
diff --git a/lib/syntax_tools/vsn.mk b/lib/syntax_tools/vsn.mk
index e0880d61ee..8d37c40742 100644
--- a/lib/syntax_tools/vsn.mk
+++ b/lib/syntax_tools/vsn.mk
@@ -1 +1 @@
-SYNTAX_TOOLS_VSN = 2.1.3
+SYNTAX_TOOLS_VSN = 2.1.4
diff --git a/lib/tools/doc/src/Makefile b/lib/tools/doc/src/Makefile
index d9c3b0ad2a..b554781382 100644
--- a/lib/tools/doc/src/Makefile
+++ b/lib/tools/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 1997-2016. All Rights Reserved.
+# Copyright Ericsson AB 1997-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -47,9 +47,9 @@ XML_REF3_FILES = \
 	make.xml \
 	tags.xml \
 	xref.xml \
-	erlang_mode.xml  
+	erlang_mode.xml
 
-XML_PART_FILES = part.xml part_notes.xml part_notes_history.xml
+XML_PART_FILES = part.xml
 
 XML_CHAPTER_FILES = \
 	cover_chapter.xml \
@@ -58,8 +58,7 @@ XML_CHAPTER_FILES = \
 	lcnt_chapter.xml \
 	erlang_mode_chapter.xml \
 	xref_chapter.xml \
-	notes.xml \
-	notes_history.xml
+	notes.xml
 
 
 BOOK_FILES = book.xml
@@ -86,9 +85,9 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html
 TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
+XML_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -108,17 +107,17 @@ man: $(MAN3_FILES)
 
 gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
 	rm -f $(MAN3DIR)/*
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -132,4 +131,3 @@ release_docs_spec: docs
 	$(INSTALL_DATA) $(MAN3DIR)/* "$(RELEASE_PATH)/man/man3"
 
 release_spec:
-
diff --git a/lib/tools/doc/src/fascicules.xml b/lib/tools/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/tools/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/tools/doc/src/note.gif b/lib/tools/doc/src/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/lib/tools/doc/src/note.gif
+++ /dev/null
diff --git a/lib/tools/doc/src/notes.xml b/lib/tools/doc/src/notes.xml
index 3eaa2058a0..1edc08c9cd 100644
--- a/lib/tools/doc/src/notes.xml
+++ b/lib/tools/doc/src/notes.xml
@@ -31,6 +31,21 @@
   </header>
   <p>This document describes the changes made to the Tools application.</p>
 
+<section><title>Tools 2.11.1</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Tools 2.11</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/tools/doc/src/part_notes.xml b/lib/tools/doc/src/part_notes.xml
deleted file mode 100644
index c4c6fa4d7d..0000000000
--- a/lib/tools/doc/src/part_notes.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Tools Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The <em>Tools</em> application contains a number of stand-alone
-      tools, which are useful when developing Erlang programs.</p>
-    <p>For information about older versions, see
-      <url href="part_notes_history_frame.html">Release Notes History</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/tools/doc/src/part_notes_history.xml b/lib/tools/doc/src/part_notes_history.xml
deleted file mode 100644
index a34e35fc56..0000000000
--- a/lib/tools/doc/src/part_notes_history.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part>
-  <header>
-    <copyright>
-      <year>2006</year>
-      <year>2016</year>
-      <holder>Ericsson AB, All Rights Reserved</holder>
-    </copyright>
-    <legalnotice>
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
- 
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-  The Initial Developer of the Original Code is Ericsson AB.
-    </legalnotice>
-
-    <title>Tools Release Notes History</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The <em>Tools</em> application contains a number of stand-alone
-      tools, which are useful when developing Erlang programs.</p>
-  </description>
-  <include file="notes_history"></include>
-</part>
-
diff --git a/lib/tools/doc/src/warning.gif b/lib/tools/doc/src/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/lib/tools/doc/src/warning.gif
+++ /dev/null
diff --git a/lib/tools/emacs/erlang.el b/lib/tools/emacs/erlang.el
index 429188b028..d9efadf64a 100644
--- a/lib/tools/emacs/erlang.el
+++ b/lib/tools/emacs/erlang.el
@@ -895,8 +895,6 @@ resulting regexp is surrounded by \\_< and \\_>."
       "decode_packet"
       "delay_trap"
       "delete_element"
-      "dexit"
-      "dgroup_leader"
       "display"
       "display_nl"
       "display_string"
@@ -905,11 +903,8 @@ resulting regexp is surrounded by \\_< and \\_>."
       "dist_ctrl_get_data_notification"
       "dist_ctrl_input_handler"
       "dist_ctrl_put_data"
-      "dist_exit"
-      "dlink"
       "dmonitor_node"
       "dmonitor_p"
-      "dsend"
       "dt_append_vm_tag_data"
       "dt_get_tag"
       "dt_get_tag_data"
@@ -917,7 +912,6 @@ resulting regexp is surrounded by \\_< and \\_>."
       "dt_put_tag"
       "dt_restore_tag"
       "dt_spread_tag"
-      "dunlink"
       "convert_time_unit"
       "external_size"
       "finish_after_on_load"
diff --git a/lib/tools/test/fprof_SUITE.erl b/lib/tools/test/fprof_SUITE.erl
index 8fd164a4b3..ae0e7253ad 100644
--- a/lib/tools/test/fprof_SUITE.erl
+++ b/lib/tools/test/fprof_SUITE.erl
@@ -51,7 +51,7 @@
 
 suite() ->
     [{ct_hooks,[ts_install_cth]},
-     {timetrap,{seconds,60}}].
+     {timetrap,{seconds,240}}].
 
 all() -> 
     case test_server:is_native(fprof_SUITE) of
@@ -571,7 +571,7 @@ seq_r(Start, Stop, Succ, R) ->
 
 create_file_slow(Name, N) when is_integer(N), N >= 0 ->
     {ok, FD} = 
-    file:open(Name, [raw, write, delayed_write, binary]),
+    file:open(Name, [raw, write, binary]),
     if N > 256 ->
            ok = file:write(FD,
                            lists:map(fun (X) -> <<X:32/unsigned>> end,
diff --git a/lib/tools/test/xref_SUITE.erl b/lib/tools/test/xref_SUITE.erl
index d651cbcfee..018f632948 100644
--- a/lib/tools/test/xref_SUITE.erl
+++ b/lib/tools/test/xref_SUITE.erl
@@ -1112,27 +1112,16 @@ read_expected(Version) ->
           {POS7+2,{FF,{erlang,spawn_opt,4}}},
           {POS8+1,{FF,{hej,san,1}}},
           {POS8+4,{FF,{a,b,1}}},
-          {POS8+4,{FF,{erlang,apply,2}}},
-          {POS8+5,{FF,{erlang,apply,2}}},
           {POS8+6,{FF,{m,f,1}}},
           {POS9+1,{FF,{read,bi,0}}},
           {POS9+2,{FF,{a,b,1}}},
-          {POS9+2,{FF,{erlang,apply,2}}},
-          {POS9+3,{FF,{erlang,apply,2}}},
-          {POS9+4,{FF,{erlang,apply,2}}},
           {POS9+4,{FF,{erlang,not_a_function,1}}},
           {POS9+5,{FF,{mod,func,2}}},
           {POS9+6,{FF,{erlang,apply,1}}},
-          {POS9+7,{FF,{erlang,apply,2}}},
           {POS9+7,{FF,{math,add3,1}}},
           {POS9+8,{FF,{q,f,1}}},
-          {POS10+4,{FF,{erlang,apply,2}}},
           {POS10+5,{FF,{mod1,fun1,1}}},
-          {POS11+6,{FF,{erlang,apply,2}}},
-          {POS12+1,{FF,{erlang,apply,2}}},
-          {POS12+4,{FF,{erlang,apply,2}}},
           {POS12+5,{FF,{m3,f3,2}}},
-          {POS12+7,{FF,{erlang,apply,2}}},
           {POS13+1,{FF,{dm,df,1}}},
           {POS13+6,{{read,bi,0},{foo,module_info,0}}},
           {POS13+7,{{read,bi,0},{read,module_info,0}}},
@@ -1162,15 +1151,26 @@ read_expected(Version) ->
             {POS3+3,  {FF,{erlang,spawn_link,3}}},
             {POS3+4, {FF,{erlang,spawn_link,3}}},
             {POS6+4, {FF,{erlang,spawn,3}}},
+            {POS8+4,{FF,{erlang,apply,2}}},
+            {POS8+5,{FF,{erlang,apply,2}}},
             {POS8+6,{FF,{erlang,apply,3}}},
             {POS8+7,{FF,{erlang,apply,3}}},
             {POS9+1,{FF,{erlang,apply,3}}},
+            {POS9+2,{FF,{erlang,apply,2}}},
+            {POS9+3,{FF,{erlang,apply,2}}},
+            {POS9+4,{FF,{erlang,apply,2}}},
             {POS9+5,{FF,{erlang,apply,3}}},
+            {POS9+7,{FF,{erlang,apply,2}}},
+            {POS10+4,{FF,{erlang,apply,2}}},
             {POS11+1,{FF,{erlang,apply,3}}},
             {POS11+2,{FF,{erlang,apply,3}}},
             {POS11+3,{FF,{erlang,apply,3}}},
             {POS11+4,{FF,{erlang,apply,3}}},
+            {POS11+6,{FF,{erlang,apply,2}}},
+            {POS12+1,{FF,{erlang,apply,2}}},
+            {POS12+4,{FF,{erlang,apply,2}}},
             {POS12+5,{FF,{erlang,apply,3}}},
+            {POS12+7,{FF,{erlang,apply,2}}},
             {POS12+8,{FF,{erlang,apply,3}}},
             {POS13+5, {{read,bi,0},{erlang,length,1}}},
             {POS14+3, {{read,bi,0},{erlang,length,1}}}],
diff --git a/lib/tools/vsn.mk b/lib/tools/vsn.mk
index b9249ae45c..6cafbca6a7 100644
--- a/lib/tools/vsn.mk
+++ b/lib/tools/vsn.mk
@@ -1 +1 @@
-TOOLS_VSN = 2.11
+TOOLS_VSN = 2.11.1
diff --git a/lib/wx/c_src/wxe_driver.c b/lib/wx/c_src/wxe_driver.c
index 5da71818e5..26ae3564e7 100644
--- a/lib/wx/c_src/wxe_driver.c
+++ b/lib/wx/c_src/wxe_driver.c
@@ -33,6 +33,7 @@
 #include <sys/types.h>
 #include <fcntl.h>
 
+#include <assert.h>
 #include "wxe_driver.h"
 
 #define TEMP_BINARY_SIZE 512
@@ -234,13 +235,21 @@ standard_outputv(ErlDrvData drv_data, ErlIOVec* ev)
        sd->max_bins = max;
    }
 
-   if(ev->vsize == 2) {
-      binref->base = ev->iov[1].iov_base;
-      binref->size = ev->iov[1].iov_len;
-      binref->from = driver_caller(sd->port_handle);
-      bin = ev->binv[1];
-      driver_binary_inc_refc(bin); /* Otherwise it could get deallocated */
-      binref->bin = bin;
+   if(ev->size > 0) {
+       assert(ev->vsize == 2 && ev->iov[0].iov_len == 0
+              && "erts changed how the ErlIOVec is structured for outputv");
+       binref->from = driver_caller(sd->port_handle);
+       binref->size = ev->iov[1].iov_len;
+       if(ev->binv[1]) {
+           binref->base = ev->iov[1].iov_base;
+           bin = ev->binv[1];
+           driver_binary_inc_refc(bin); /* Otherwise it could get deallocated */
+       } else {
+           bin = driver_alloc_binary(ev->iov[1].iov_len);
+           memcpy(bin->orig_bytes, ev->iov[1].iov_base, ev->iov[1].iov_len);
+           binref->base = bin->orig_bytes;
+       }
+       binref->bin = bin;
    } else { /* Empty binary (becomes NULL) */
       binref->base = NULL;
       binref->size = 0;
diff --git a/lib/wx/doc/src/Makefile b/lib/wx/doc/src/Makefile
index 23890f47f0..a76740adf1 100644
--- a/lib/wx/doc/src/Makefile
+++ b/lib/wx/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 2008-2016. All Rights Reserved.
+# Copyright Ericsson AB 2008-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -39,7 +39,7 @@ ModsNoExt	= $(ErlMods:%.erl=%) $(GenMods:%.erl=%)
 XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = $(ErlMods:%.erl=%.xml) $(GenMods:%.erl=%.xml)
 
-XML_PART_FILES = part.xml part_notes.xml
+XML_PART_FILES = part.xml
 XML_CHAPTER_FILES = chapter.xml
 XML_NOTES_FILES = notes.xml
 
diff --git a/lib/wx/doc/src/fascicules.xml b/lib/wx/doc/src/fascicules.xml
deleted file mode 100644
index 154c8a3b6d..0000000000
--- a/lib/wx/doc/src/fascicules.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-</fascicules>
-
diff --git a/lib/wx/doc/src/notes.xml b/lib/wx/doc/src/notes.xml
index 599b5b64fd..69ea906ec0 100644
--- a/lib/wx/doc/src/notes.xml
+++ b/lib/wx/doc/src/notes.xml
@@ -32,6 +32,22 @@
   <p>This document describes the changes made to the wxErlang
     application.</p>
 
+<section><title>Wx 1.8.3</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    wx crashes in otp 20.1 if empty binaries was sent down as
+	    arguments.</p>
+          <p>
+	    Own Id: OTP-14688</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Wx 1.8.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/wx/doc/src/part_notes.xml b/lib/wx/doc/src/part_notes.xml
deleted file mode 100644
index 5a5a6494c1..0000000000
--- a/lib/wx/doc/src/part_notes.xml
+++ /dev/null
@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2009</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>wxErlang Release Notes</title>
-    <prepared></prepared>
-    <docno></docno>
-    <date></date>
-    <rev></rev>
-  </header>
-  <description>
-    <p>The <em>wxErlang</em> application is an api for writing graphical user
-      interfaces with wxWidgets. 
-    </p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/wx/vsn.mk b/lib/wx/vsn.mk
index 039fae322e..7da4529c98 100644
--- a/lib/wx/vsn.mk
+++ b/lib/wx/vsn.mk
@@ -1 +1 @@
-WX_VSN = 1.8.2
+WX_VSN = 1.8.3
diff --git a/lib/xmerl/doc/src/Makefile b/lib/xmerl/doc/src/Makefile
index 2465217e8e..7d0b0b2392 100644
--- a/lib/xmerl/doc/src/Makefile
+++ b/lib/xmerl/doc/src/Makefile
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 #
-# Copyright Ericsson AB 2004-2016. All Rights Reserved.
+# Copyright Ericsson AB 2004-2017. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -59,9 +59,8 @@ XMERL_XML_FILES = $(XMERL_MODULES:=.xml)
 XML_REF3_FILES = $(XMERL_XML_FILES) \
 	xmerl_sax_parser.xml
 
-XML_PART_FILES =  \
-	part.xml \
-	part_notes.xml
+XML_PART_FILES = \
+	part.xml
 
 XML_REF6_FILES =
 
@@ -107,10 +106,10 @@ TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf
 
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -120,14 +119,14 @@ $(HTMLDIR)/%.gif: %.gif
 
 docs: pdf html man
 
-$(TOP_PDF_FILE): $(XML_FILES) 
+$(TOP_PDF_FILE): $(XML_FILES)
 
 pdf: $(TOP_PDF_FILE)
 
 html: gifs $(HTML_REF_MAN_FILE)
 
-$(XMERL_XML_FILES): 
-	escript $(DOCGEN)/priv/bin/xml_from_edoc.escript $(XMERL_DIR)/$(@:%.xml=%.erl) 
+$(XMERL_XML_FILES):
+	escript $(DOCGEN)/priv/bin/xml_from_edoc.escript $(XMERL_DIR)/$(@:%.xml=%.erl)
 
 man: $(MAN3_FILES) $(MAN6_FILES)
 
@@ -135,15 +134,15 @@ gifs: $(GIF_FILES:%=$(HTMLDIR)/%)
 
 xml: $(XMERL_XML_FILES)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)/*
-	rm -f $(MAN3DIR)/*	
-	rm -f $(MAN6DIR)/*	
+	rm -f $(MAN3DIR)/*
+	rm -f $(MAN6DIR)/*
 	rm -f $(XMERL_XML_FILES)
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 
 info:
@@ -158,7 +157,7 @@ info:
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -177,6 +176,3 @@ release_spec:
 
 
 release_tests_spec:
-
-
-
diff --git a/lib/xmerl/doc/src/fascicules.xml b/lib/xmerl/doc/src/fascicules.xml
deleted file mode 100644
index 37feca543f..0000000000
--- a/lib/xmerl/doc/src/fascicules.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE fascicules SYSTEM "fascicules.dtd">
-
-<fascicules>
-  <fascicule file="part" href="part_frame.html" entry="no">
-    User's Guide
-  </fascicule>
-  <fascicule file="ref_man" href="ref_man_frame.html" entry="yes">
-    Reference Manual
-  </fascicule>
-  <fascicule file="part_notes" href="part_notes_frame.html" entry="no">
-    Release Notes
-  </fascicule>
-  <fascicule file="" href="../../../../doc/print.html" entry="no">
-    Off-Print
-  </fascicule>
-</fascicules>
-
diff --git a/lib/xmerl/doc/src/notes.xml b/lib/xmerl/doc/src/notes.xml
index 1162561225..f62a8dc53d 100644
--- a/lib/xmerl/doc/src/notes.xml
+++ b/lib/xmerl/doc/src/notes.xml
@@ -32,6 +32,21 @@
   <p>This document describes the changes made to the Xmerl application.</p>
 
 
+<section><title>Xmerl 1.3.16</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+	    <p> Removed all old unused files in the documentation.
+	    </p>
+          <p>
+	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Xmerl 1.3.15</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/xmerl/doc/src/part_notes.xml b/lib/xmerl/doc/src/part_notes.xml
deleted file mode 100644
index 4ed441c7d4..0000000000
--- a/lib/xmerl/doc/src/part_notes.xml
+++ /dev/null
@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<!DOCTYPE part SYSTEM "part.dtd">
-
-<part xmlns:xi="http://www.w3.org/2001/XInclude">
-  <header>
-    <copyright>
-      <year>2004</year><year>2016</year>
-      <holder>Ericsson AB. All Rights Reserved.</holder>
-    </copyright>
-    <legalnotice>
-      Licensed under the Apache License, Version 2.0 (the "License");
-      you may not use this file except in compliance with the License.
-      You may obtain a copy of the License at
- 
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-      See the License for the specific language governing permissions and
-      limitations under the License.
-    
-    </legalnotice>
-
-    <title>Xmerl Release Notes</title>
-    <prepared>Bertil Karlsson</prepared>
-    <docno></docno>
-    <date>>2004-12-15</date>
-    <rev></rev>
-    <file>part_notes.xml</file>
-  </header>
-  <description>
-    <p>The <em>Xmerl</em> application 
-      contains modules with support for processing of xml files compliant to XML 1.0.</p>
-    <p>There are also release notes for
-      <url href="notes_history.html">older versions</url>.</p>
-  </description>
-  <xi:include href="notes.xml"/>
-</part>
-
diff --git a/lib/xmerl/vsn.mk b/lib/xmerl/vsn.mk
index 2e9c9061d9..ddff0c8894 100644
--- a/lib/xmerl/vsn.mk
+++ b/lib/xmerl/vsn.mk
@@ -1 +1 @@
-XMERL_VSN = 1.3.15
+XMERL_VSN = 1.3.16
diff --git a/make/otp_release_targets.mk b/make/otp_release_targets.mk
index 13b54645ad..23b4416963 100644
--- a/make/otp_release_targets.mk
+++ b/make/otp_release_targets.mk
@@ -94,6 +94,8 @@ $(HTMLDIR)/users_guide.html: $(XML_FILES)
 # ------------------------------------------------------------------------
 # The following targets just exist in the documentation directory
 # ------------------------------------------------------------------------
+.PHONY: xmllint
+
 ifneq ($(XML_FILES),)
 
 # ----------------------------------------------------
@@ -108,21 +110,38 @@ $(HTMLDIR)/$(APPLICATION).eix: $(XML_FILES) $(SPECS_FILES)
 	        -xinclude $(TOP_SPECS_PARAM)  \
 		-path $(DOCGEN)/priv/dtd \
 	        -path $(DOCGEN)/priv/dtd_html_entities \
-	        $(DOCGEN)/priv/xsl/db_eix.xsl book.xml >  $@ 
+	        $(DOCGEN)/priv/xsl/db_eix.xsl book.xml >  $@
 
 docs: $(HTMLDIR)/$(APPLICATION).eix
 
-xmllint: $(XML_FILES)
-	@echo "Running xmllint"
-	@BookFiles=`awk -F\" '/xi:include/ {print $$2}' book.xml`; \
-	for i in $$BookFiles; do \
-		if [ $$i = "notes.xml" ]; then \
-			echo Checking $$i; \
-			xmllint --noout --valid --nodefdtd --loaddtd --path $(DOCGEN)/priv/dtd:$(DOCGEN)/priv/dtd_html_entities $$i; \
-		else\
-			awk -F\" '/xi:include/ {print "echo Checking " $$2 ;print "xmllint --noout --valid --nodefdtd --loaddtd --path $(DOCGEN)/priv/dtd:$(DOCGEN)/priv/dtd_html_entities:$(XMLLINT_SRCDIRS) " $$2}' $$i |sh; \
-		fi \
-	done
+## Here awk is used to find all xi:include files in $(BOOK_FILES)
+## Then we look into all those files check for xi:includes
+BOOK_XI_INC_FILES:=$(foreach file,$(BOOK_FILES),$(shell awk -F\" '/xi:include/ {print $$2}' $(file))) $(BOOK_FILES)
+ALL_XI_INC_FILES:=$(foreach file,$(BOOK_XI_INC_FILES),$(shell awk -F\" '/xi:include/ {if ("$(dir $(file))" != "./") printf "$(dir $(file))"; print $$2}' $(file))) $(BOOK_XI_INC_FILES)
+
+## These are the patterns of file names that xmllint cannot currently parse
+XI_INC_FILES:=%user_man.xml %usersguide.xml %refman.xml %ref_man.xml %part.xml %book.xml
+
+## These are the files that we should run the xmllint on
+LINT_XI_INC_FILES := $(filter-out $(XI_INC_FILES), $(ALL_XI_INC_FILES))
+
+EMPTY :=
+SPACE := $(EMPTY) $(EMPTY)
+XMLLINT_SRCDIRS:=$(subst $(SPACE),:,$(sort $(foreach file,$(XML_FILES),$(dir $(file)))))
+
+xmllint: $(ALL_XI_INC_FILES)
+## We verify that the $(XML_FILES) variable in the Makefile have exactly
+## the same files as we found out by following xi:include.
+ifneq ($(filter-out $(filter %.xml,$(XML_FILES)),$(ALL_XI_INC_FILES)),)
+	$(error "$(filter-out $(filter %.xml,$(XML_FILES)),$(ALL_XI_INC_FILES)) in $$ALL_XI_INC_FILES but not in $$XML_FILES");
+endif
+ifneq ($(filter-out $(ALL_XI_INC_FILES),$(filter %.xml,$(XML_FILES))),)
+	$(error "$(filter-out $(ALL_XI_INC_FILES),$(filter %.xml,$(XML_FILES))) in $$XML_FILES but not in $$ALL_XI_INC_FILES");
+endif
+	@echo "xmllint $(LINT_XI_INC_FILES)"
+	@xmllint --noout --valid --nodefdtd --loaddtd --path \
+	$(DOCGEN)/priv/dtd:$(DOCGEN)/priv/dtd_html_entities:$(XMLLINT_SRCDIRS) \
+	$(LINT_XI_INC_FILES)
 
 # ----------------------------------------------------
 # Local documentation target for testing 
@@ -143,6 +162,8 @@ local_copy_of_topdefs:
 		$(DOCGEN)/priv/js/flipmenu/flip_static.gif \
 		$(DOCGEN)/priv/js/flipmenu/flipmenu.js $(HTMLDIR)/js/flipmenu
 
+else
+xmllint:
 endif
 
 # ----------------------------------------------------
diff --git a/make/otp_subdir.mk b/make/otp_subdir.mk
index 5734970298..19c744955c 100644
--- a/make/otp_subdir.mk
+++ b/make/otp_subdir.mk
@@ -25,7 +25,7 @@
 #
 # Targets that don't affect documentation directories
 #
-opt debug lcnt release docs release_docs tests release_tests clean depend valgrind static_lib:
+opt debug lcnt release docs release_docs tests release_tests clean depend valgrind static_lib xmllint:
 	@set -e ;							\
 	app_pwd=`pwd` ;							\
 	if test -f vsn.mk; then						\
diff --git a/make/run_make.mk b/make/run_make.mk
index 2591a37cad..bcbbf53f7d 100644
--- a/make/run_make.mk
+++ b/make/run_make.mk
@@ -38,9 +38,5 @@ plain smp frag smp_frag:
 	$(make_verbose)$(MAKE) -f $(TARGET)/Makefile FLAVOR=$@
 
 clean generate depend docs release release_spec release_docs release_docs_spec \
-  tests release_tests release_tests_spec static_lib:
+  tests release_tests release_tests_spec static_lib xmllint:
 	$(make_verbose)$(MAKE) -f $(TARGET)/Makefile $@
-
-
-
-
diff --git a/otp_versions.table b/otp_versions.table
index c8e355b695..ff1587879f 100644
--- a/otp_versions.table
+++ b/otp_versions.table
@@ -1,3 +1,12 @@
+OTP-20.2.1 : ssh-4.6.4 # asn1-5.0.4 common_test-1.15.3 compiler-7.1.4 cosEvent-2.2.2 cosEventDomain-1.2.2 cosFileTransfer-1.2.2 cosNotification-1.2.3 cosProperty-1.2.3 cosTime-1.2.3 cosTransactions-1.3.3 crypto-4.2 debugger-4.2.4 dialyzer-3.2.3 diameter-2.1.3 edoc-0.9.2 eldap-1.2.3 erl_docgen-0.7.2 erl_interface-3.10.1 erts-9.2 et-1.6.1 eunit-2.3.5 hipe-3.17 ic-4.4.3 inets-6.4.5 jinterface-1.8.1 kernel-5.4.1 megaco-3.18.3 mnesia-4.15.2 observer-2.6 odbc-2.12.1 orber-3.8.4 os_mon-2.4.4 otp_mibs-1.1.2 parsetools-2.1.6 public_key-1.5.2 reltool-0.7.5 runtime_tools-1.12.3 sasl-3.1.1 snmp-5.2.9 ssl-8.2.3 stdlib-3.4.3 syntax_tools-2.1.4 tools-2.11.1 wx-1.8.3 xmerl-1.3.16 :
+OTP-20.2 : asn1-5.0.4 common_test-1.15.3 compiler-7.1.4 cosEvent-2.2.2 cosEventDomain-1.2.2 cosFileTransfer-1.2.2 cosNotification-1.2.3 cosProperty-1.2.3 cosTime-1.2.3 cosTransactions-1.3.3 crypto-4.2 debugger-4.2.4 dialyzer-3.2.3 diameter-2.1.3 edoc-0.9.2 eldap-1.2.3 erl_docgen-0.7.2 erl_interface-3.10.1 erts-9.2 eunit-2.3.5 hipe-3.17 ic-4.4.3 inets-6.4.5 jinterface-1.8.1 kernel-5.4.1 megaco-3.18.3 mnesia-4.15.2 observer-2.6 odbc-2.12.1 orber-3.8.4 os_mon-2.4.4 otp_mibs-1.1.2 parsetools-2.1.6 public_key-1.5.2 runtime_tools-1.12.3 sasl-3.1.1 snmp-5.2.9 ssh-4.6.3 ssl-8.2.3 stdlib-3.4.3 syntax_tools-2.1.4 tools-2.11.1 wx-1.8.3 xmerl-1.3.16 # et-1.6.1 reltool-0.7.5 :
+OTP-20.1.7.1 : kernel-5.4.0.1 # asn1-5.0.3 common_test-1.15.2 compiler-7.1.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 crypto-4.1 debugger-4.2.3 dialyzer-3.2.2 diameter-2.1.2 edoc-0.9.1 eldap-1.2.2 erl_docgen-0.7.1 erl_interface-3.10 erts-9.1.5 et-1.6.1 eunit-2.3.4 hipe-3.16.1 ic-4.4.2 inets-6.4.4 jinterface-1.8 megaco-3.18.2 mnesia-4.15.1 observer-2.5 odbc-2.12 orber-3.8.3 os_mon-2.4.3 otp_mibs-1.1.1 parsetools-2.1.5 public_key-1.5.1 reltool-0.7.5 runtime_tools-1.12.2 sasl-3.1 snmp-5.2.8 ssh-4.6.2 ssl-8.2.2 stdlib-3.4.2 syntax_tools-2.1.3 tools-2.11 wx-1.8.2 xmerl-1.3.15 :
+OTP-20.1.7 : public_key-1.5.1 ssl-8.2.2 # asn1-5.0.3 common_test-1.15.2 compiler-7.1.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 crypto-4.1 debugger-4.2.3 dialyzer-3.2.2 diameter-2.1.2 edoc-0.9.1 eldap-1.2.2 erl_docgen-0.7.1 erl_interface-3.10 erts-9.1.5 et-1.6.1 eunit-2.3.4 hipe-3.16.1 ic-4.4.2 inets-6.4.4 jinterface-1.8 kernel-5.4 megaco-3.18.2 mnesia-4.15.1 observer-2.5 odbc-2.12 orber-3.8.3 os_mon-2.4.3 otp_mibs-1.1.1 parsetools-2.1.5 reltool-0.7.5 runtime_tools-1.12.2 sasl-3.1 snmp-5.2.8 ssh-4.6.2 stdlib-3.4.2 syntax_tools-2.1.3 tools-2.11 wx-1.8.2 xmerl-1.3.15 :
+OTP-20.1.6 : erts-9.1.5 ssh-4.6.2 # asn1-5.0.3 common_test-1.15.2 compiler-7.1.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 crypto-4.1 debugger-4.2.3 dialyzer-3.2.2 diameter-2.1.2 edoc-0.9.1 eldap-1.2.2 erl_docgen-0.7.1 erl_interface-3.10 et-1.6.1 eunit-2.3.4 hipe-3.16.1 ic-4.4.2 inets-6.4.4 jinterface-1.8 kernel-5.4 megaco-3.18.2 mnesia-4.15.1 observer-2.5 odbc-2.12 orber-3.8.3 os_mon-2.4.3 otp_mibs-1.1.1 parsetools-2.1.5 public_key-1.5 reltool-0.7.5 runtime_tools-1.12.2 sasl-3.1 snmp-5.2.8 ssl-8.2.1 stdlib-3.4.2 syntax_tools-2.1.3 tools-2.11 wx-1.8.2 xmerl-1.3.15 :
+OTP-20.1.5 : erts-9.1.4 inets-6.4.4 # asn1-5.0.3 common_test-1.15.2 compiler-7.1.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 crypto-4.1 debugger-4.2.3 dialyzer-3.2.2 diameter-2.1.2 edoc-0.9.1 eldap-1.2.2 erl_docgen-0.7.1 erl_interface-3.10 et-1.6.1 eunit-2.3.4 hipe-3.16.1 ic-4.4.2 jinterface-1.8 kernel-5.4 megaco-3.18.2 mnesia-4.15.1 observer-2.5 odbc-2.12 orber-3.8.3 os_mon-2.4.3 otp_mibs-1.1.1 parsetools-2.1.5 public_key-1.5 reltool-0.7.5 runtime_tools-1.12.2 sasl-3.1 snmp-5.2.8 ssh-4.6.1 ssl-8.2.1 stdlib-3.4.2 syntax_tools-2.1.3 tools-2.11 wx-1.8.2 xmerl-1.3.15 :
+OTP-20.1.4 : inets-6.4.3 # asn1-5.0.3 common_test-1.15.2 compiler-7.1.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 crypto-4.1 debugger-4.2.3 dialyzer-3.2.2 diameter-2.1.2 edoc-0.9.1 eldap-1.2.2 erl_docgen-0.7.1 erl_interface-3.10 erts-9.1.3 et-1.6.1 eunit-2.3.4 hipe-3.16.1 ic-4.4.2 jinterface-1.8 kernel-5.4 megaco-3.18.2 mnesia-4.15.1 observer-2.5 odbc-2.12 orber-3.8.3 os_mon-2.4.3 otp_mibs-1.1.1 parsetools-2.1.5 public_key-1.5 reltool-0.7.5 runtime_tools-1.12.2 sasl-3.1 snmp-5.2.8 ssh-4.6.1 ssl-8.2.1 stdlib-3.4.2 syntax_tools-2.1.3 tools-2.11 wx-1.8.2 xmerl-1.3.15 :
+OTP-20.1.3 : diameter-2.1.2 erts-9.1.3 snmp-5.2.8 # asn1-5.0.3 common_test-1.15.2 compiler-7.1.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 crypto-4.1 debugger-4.2.3 dialyzer-3.2.2 edoc-0.9.1 eldap-1.2.2 erl_docgen-0.7.1 erl_interface-3.10 et-1.6.1 eunit-2.3.4 hipe-3.16.1 ic-4.4.2 inets-6.4.2 jinterface-1.8 kernel-5.4 megaco-3.18.2 mnesia-4.15.1 observer-2.5 odbc-2.12 orber-3.8.3 os_mon-2.4.3 otp_mibs-1.1.1 parsetools-2.1.5 public_key-1.5 reltool-0.7.5 runtime_tools-1.12.2 sasl-3.1 ssh-4.6.1 ssl-8.2.1 stdlib-3.4.2 syntax_tools-2.1.3 tools-2.11 wx-1.8.2 xmerl-1.3.15 :
+OTP-20.1.2 : diameter-2.1.1 erts-9.1.2 # asn1-5.0.3 common_test-1.15.2 compiler-7.1.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 crypto-4.1 debugger-4.2.3 dialyzer-3.2.2 edoc-0.9.1 eldap-1.2.2 erl_docgen-0.7.1 erl_interface-3.10 et-1.6.1 eunit-2.3.4 hipe-3.16.1 ic-4.4.2 inets-6.4.2 jinterface-1.8 kernel-5.4 megaco-3.18.2 mnesia-4.15.1 observer-2.5 odbc-2.12 orber-3.8.3 os_mon-2.4.3 otp_mibs-1.1.1 parsetools-2.1.5 public_key-1.5 reltool-0.7.5 runtime_tools-1.12.2 sasl-3.1 snmp-5.2.7 ssh-4.6.1 ssl-8.2.1 stdlib-3.4.2 syntax_tools-2.1.3 tools-2.11 wx-1.8.2 xmerl-1.3.15 :
 OTP-20.1.1 : compiler-7.1.3 erts-9.1.1 ssh-4.6.1 # asn1-5.0.3 common_test-1.15.2 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 crypto-4.1 debugger-4.2.3 dialyzer-3.2.2 diameter-2.1 edoc-0.9.1 eldap-1.2.2 erl_docgen-0.7.1 erl_interface-3.10 et-1.6.1 eunit-2.3.4 hipe-3.16.1 ic-4.4.2 inets-6.4.2 jinterface-1.8 kernel-5.4 megaco-3.18.2 mnesia-4.15.1 observer-2.5 odbc-2.12 orber-3.8.3 os_mon-2.4.3 otp_mibs-1.1.1 parsetools-2.1.5 public_key-1.5 reltool-0.7.5 runtime_tools-1.12.2 sasl-3.1 snmp-5.2.7 ssl-8.2.1 stdlib-3.4.2 syntax_tools-2.1.3 tools-2.11 wx-1.8.2 xmerl-1.3.15 :
 OTP-20.1 : asn1-5.0.3 common_test-1.15.2 compiler-7.1.2 crypto-4.1 debugger-4.2.3 dialyzer-3.2.2 diameter-2.1 edoc-0.9.1 erl_docgen-0.7.1 erts-9.1 et-1.6.1 eunit-2.3.4 hipe-3.16.1 inets-6.4.2 kernel-5.4 mnesia-4.15.1 observer-2.5 os_mon-2.4.3 public_key-1.5 reltool-0.7.5 runtime_tools-1.12.2 sasl-3.1 snmp-5.2.7 ssh-4.6 ssl-8.2.1 stdlib-3.4.2 syntax_tools-2.1.3 tools-2.11 wx-1.8.2 # cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 eldap-1.2.2 erl_interface-3.10 ic-4.4.2 jinterface-1.8 megaco-3.18.2 odbc-2.12 orber-3.8.3 otp_mibs-1.1.1 parsetools-2.1.5 xmerl-1.3.15 :
 OTP-20.0.5 : erts-9.0.5 inets-6.4.1 # asn1-5.0.2 common_test-1.15.1 compiler-7.1.1 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 crypto-4.0 debugger-4.2.2 dialyzer-3.2.1 diameter-2.0 edoc-0.9 eldap-1.2.2 erl_docgen-0.7 erl_interface-3.10 et-1.6 eunit-2.3.3 hipe-3.16 ic-4.4.2 jinterface-1.8 kernel-5.3.1 megaco-3.18.2 mnesia-4.15 observer-2.4 odbc-2.12 orber-3.8.3 os_mon-2.4.2 otp_mibs-1.1.1 parsetools-2.1.5 public_key-1.4.1 reltool-0.7.4 runtime_tools-1.12.1 sasl-3.0.4 snmp-5.2.6 ssh-4.5.1 ssl-8.2 stdlib-3.4.1 syntax_tools-2.1.2 tools-2.10.1 wx-1.8.1 xmerl-1.3.15 :
@@ -6,6 +15,8 @@ OTP-20.0.3 : asn1-5.0.2 compiler-7.1.1 erts-9.0.3 ssh-4.5.1 # common_test-1.15.1
 OTP-20.0.2 : asn1-5.0.1 erts-9.0.2 kernel-5.3.1 # common_test-1.15.1 compiler-7.1 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 crypto-4.0 debugger-4.2.2 dialyzer-3.2 diameter-2.0 edoc-0.9 eldap-1.2.2 erl_docgen-0.7 erl_interface-3.10 et-1.6 eunit-2.3.3 hipe-3.16 ic-4.4.2 inets-6.4 jinterface-1.8 megaco-3.18.2 mnesia-4.15 observer-2.4 odbc-2.12 orber-3.8.3 os_mon-2.4.2 otp_mibs-1.1.1 parsetools-2.1.5 public_key-1.4.1 reltool-0.7.4 runtime_tools-1.12.1 sasl-3.0.4 snmp-5.2.6 ssh-4.5 ssl-8.2 stdlib-3.4.1 syntax_tools-2.1.2 tools-2.10.1 wx-1.8.1 xmerl-1.3.15 :
 OTP-20.0.1 : common_test-1.15.1 erts-9.0.1 runtime_tools-1.12.1 stdlib-3.4.1 tools-2.10.1 # asn1-5.0 compiler-7.1 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 crypto-4.0 debugger-4.2.2 dialyzer-3.2 diameter-2.0 edoc-0.9 eldap-1.2.2 erl_docgen-0.7 erl_interface-3.10 et-1.6 eunit-2.3.3 hipe-3.16 ic-4.4.2 inets-6.4 jinterface-1.8 kernel-5.3 megaco-3.18.2 mnesia-4.15 observer-2.4 odbc-2.12 orber-3.8.3 os_mon-2.4.2 otp_mibs-1.1.1 parsetools-2.1.5 public_key-1.4.1 reltool-0.7.4 sasl-3.0.4 snmp-5.2.6 ssh-4.5 ssl-8.2 syntax_tools-2.1.2 wx-1.8.1 xmerl-1.3.15 :
 OTP-20.0 : asn1-5.0 common_test-1.15 compiler-7.1 cosProperty-1.2.2 crypto-4.0 debugger-4.2.2 dialyzer-3.2 diameter-2.0 edoc-0.9 erl_docgen-0.7 erl_interface-3.10 erts-9.0 eunit-2.3.3 hipe-3.16 inets-6.4 jinterface-1.8 kernel-5.3 megaco-3.18.2 mnesia-4.15 observer-2.4 orber-3.8.3 parsetools-2.1.5 public_key-1.4.1 reltool-0.7.4 runtime_tools-1.12 sasl-3.0.4 snmp-5.2.6 ssh-4.5 ssl-8.2 stdlib-3.4 syntax_tools-2.1.2 tools-2.10 wx-1.8.1 xmerl-1.3.15 # cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosTime-1.2.2 cosTransactions-1.3.2 eldap-1.2.2 et-1.6 ic-4.4.2 odbc-2.12 os_mon-2.4.2 otp_mibs-1.1.1 :
+OTP-19.3.6.5 : erts-8.3.5.4 mnesia-4.14.3.1 ssh-4.4.2.1 # asn1-4.0.4 common_test-1.14 compiler-7.0.4.1 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.4 debugger-4.2.1 dialyzer-3.1.1 diameter-1.12.2 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.3 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.4 ic-4.4.2 inets-6.3.9 jinterface-1.7.1 kernel-5.2 megaco-3.18.1 observer-2.3.1 odbc-2.12 orber-3.8.2 os_mon-2.4.2 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.4 reltool-0.7.3 runtime_tools-1.11.1 sasl-3.0.3 snmp-5.2.5 ssl-8.1.3.1 stdlib-3.3 syntax_tools-2.1.1 tools-2.9.1 typer-0.9.12 wx-1.8 xmerl-1.3.14 :
+OTP-19.3.6.4 : ssl-8.1.3.1 # asn1-4.0.4 common_test-1.14 compiler-7.0.4.1 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.4 debugger-4.2.1 dialyzer-3.1.1 diameter-1.12.2 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.3 erts-8.3.5.3 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.4 ic-4.4.2 inets-6.3.9 jinterface-1.7.1 kernel-5.2 megaco-3.18.1 mnesia-4.14.3 observer-2.3.1 odbc-2.12 orber-3.8.2 os_mon-2.4.2 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.4 reltool-0.7.3 runtime_tools-1.11.1 sasl-3.0.3 snmp-5.2.5 ssh-4.4.2 stdlib-3.3 syntax_tools-2.1.1 tools-2.9.1 typer-0.9.12 wx-1.8 xmerl-1.3.14 :
 OTP-19.3.6.3 : compiler-7.0.4.1 erts-8.3.5.3 # asn1-4.0.4 common_test-1.14 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.4 debugger-4.2.1 dialyzer-3.1.1 diameter-1.12.2 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.3 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.4 ic-4.4.2 inets-6.3.9 jinterface-1.7.1 kernel-5.2 megaco-3.18.1 mnesia-4.14.3 observer-2.3.1 odbc-2.12 orber-3.8.2 os_mon-2.4.2 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.4 reltool-0.7.3 runtime_tools-1.11.1 sasl-3.0.3 snmp-5.2.5 ssh-4.4.2 ssl-8.1.3 stdlib-3.3 syntax_tools-2.1.1 tools-2.9.1 typer-0.9.12 wx-1.8 xmerl-1.3.14 :
 OTP-19.3.6.2 : erts-8.3.5.2 # asn1-4.0.4 common_test-1.14 compiler-7.0.4 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.4 debugger-4.2.1 dialyzer-3.1.1 diameter-1.12.2 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.3 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.4 ic-4.4.2 inets-6.3.9 jinterface-1.7.1 kernel-5.2 megaco-3.18.1 mnesia-4.14.3 observer-2.3.1 odbc-2.12 orber-3.8.2 os_mon-2.4.2 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.4 reltool-0.7.3 runtime_tools-1.11.1 sasl-3.0.3 snmp-5.2.5 ssh-4.4.2 ssl-8.1.3 stdlib-3.3 syntax_tools-2.1.1 tools-2.9.1 typer-0.9.12 wx-1.8 xmerl-1.3.14 :
 OTP-19.3.6.1 : erts-8.3.5.1 # asn1-4.0.4 common_test-1.14 compiler-7.0.4 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.4 debugger-4.2.1 dialyzer-3.1.1 diameter-1.12.2 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.3 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.4 ic-4.4.2 inets-6.3.9 jinterface-1.7.1 kernel-5.2 megaco-3.18.1 mnesia-4.14.3 observer-2.3.1 odbc-2.12 orber-3.8.2 os_mon-2.4.2 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.4 reltool-0.7.3 runtime_tools-1.11.1 sasl-3.0.3 snmp-5.2.5 ssh-4.4.2 ssl-8.1.3 stdlib-3.3 syntax_tools-2.1.1 tools-2.9.1 typer-0.9.12 wx-1.8 xmerl-1.3.14 :
@@ -16,6 +27,7 @@ OTP-19.3.3 : dialyzer-3.1.1 erts-8.3.3 inets-6.3.8 # asn1-4.0.4 common_test-1.14
 OTP-19.3.2 : erts-8.3.2 # asn1-4.0.4 common_test-1.14 compiler-7.0.4 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.4 debugger-4.2.1 dialyzer-3.1 diameter-1.12.2 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.3 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.4 ic-4.4.2 inets-6.3.7 jinterface-1.7.1 kernel-5.2 megaco-3.18.1 mnesia-4.14.3 observer-2.3.1 odbc-2.12 orber-3.8.2 os_mon-2.4.2 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.4 reltool-0.7.3 runtime_tools-1.11.1 sasl-3.0.3 snmp-5.2.5 ssh-4.4.2 ssl-8.1.2 stdlib-3.3 syntax_tools-2.1.1 tools-2.9.1 typer-0.9.12 wx-1.8 xmerl-1.3.13 :
 OTP-19.3.1 : crypto-3.7.4 erts-8.3.1 inets-6.3.7 ssh-4.4.2 ssl-8.1.2 # asn1-4.0.4 common_test-1.14 compiler-7.0.4 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 debugger-4.2.1 dialyzer-3.1 diameter-1.12.2 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.3 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.4 ic-4.4.2 jinterface-1.7.1 kernel-5.2 megaco-3.18.1 mnesia-4.14.3 observer-2.3.1 odbc-2.12 orber-3.8.2 os_mon-2.4.2 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.4 reltool-0.7.3 runtime_tools-1.11.1 sasl-3.0.3 snmp-5.2.5 stdlib-3.3 syntax_tools-2.1.1 tools-2.9.1 typer-0.9.12 wx-1.8 xmerl-1.3.13 :
 OTP-19.3 : common_test-1.14 compiler-7.0.4 crypto-3.7.3 dialyzer-3.1 diameter-1.12.2 erl_interface-3.9.3 erts-8.3 hipe-3.15.4 inets-6.3.6 kernel-5.2 observer-2.3.1 os_mon-2.4.2 public_key-1.4 reltool-0.7.3 runtime_tools-1.11.1 sasl-3.0.3 snmp-5.2.5 ssh-4.4.1 ssl-8.1.1 stdlib-3.3 tools-2.9.1 typer-0.9.12 xmerl-1.3.13 # asn1-4.0.4 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 debugger-4.2.1 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 et-1.6 eunit-2.3.2 gs-1.6.2 ic-4.4.2 jinterface-1.7.1 megaco-3.18.1 mnesia-4.14.3 odbc-2.12 orber-3.8.2 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 syntax_tools-2.1.1 wx-1.8 :
+OTP-19.2.3.1 : erts-8.2.2.1 # asn1-4.0.4 common_test-1.13 compiler-7.0.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.2 debugger-4.2.1 dialyzer-3.0.3 diameter-1.12.1 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.2 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.3 ic-4.4.2 inets-6.3.5 jinterface-1.7.1 kernel-5.1.1 megaco-3.18.1 mnesia-4.14.3 observer-2.3 odbc-2.12 orber-3.8.2 os_mon-2.4.1 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.3 reltool-0.7.2 runtime_tools-1.11 sasl-3.0.2 snmp-5.2.4 ssh-4.4 ssl-8.1 stdlib-3.2 syntax_tools-2.1.1 tools-2.9 typer-0.9.11 wx-1.8 xmerl-1.3.12 :
 OTP-19.2.3 : erts-8.2.2 inets-6.3.5 # asn1-4.0.4 common_test-1.13 compiler-7.0.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.2 debugger-4.2.1 dialyzer-3.0.3 diameter-1.12.1 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.2 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.3 ic-4.4.2 jinterface-1.7.1 kernel-5.1.1 megaco-3.18.1 mnesia-4.14.3 observer-2.3 odbc-2.12 orber-3.8.2 os_mon-2.4.1 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.3 reltool-0.7.2 runtime_tools-1.11 sasl-3.0.2 snmp-5.2.4 ssh-4.4 ssl-8.1 stdlib-3.2 syntax_tools-2.1.1 tools-2.9 typer-0.9.11 wx-1.8 xmerl-1.3.12 :
 OTP-19.2.2 : mnesia-4.14.3 # asn1-4.0.4 common_test-1.13 compiler-7.0.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.2 debugger-4.2.1 dialyzer-3.0.3 diameter-1.12.1 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.2 erts-8.2.1 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.3 ic-4.4.2 inets-6.3.4 jinterface-1.7.1 kernel-5.1.1 megaco-3.18.1 observer-2.3 odbc-2.12 orber-3.8.2 os_mon-2.4.1 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.3 reltool-0.7.2 runtime_tools-1.11 sasl-3.0.2 snmp-5.2.4 ssh-4.4 ssl-8.1 stdlib-3.2 syntax_tools-2.1.1 tools-2.9 typer-0.9.11 wx-1.8 xmerl-1.3.12 :
 OTP-19.2.1 : erts-8.2.1 # asn1-4.0.4 common_test-1.13 compiler-7.0.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.2 debugger-4.2.1 dialyzer-3.0.3 diameter-1.12.1 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.2 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.3 ic-4.4.2 inets-6.3.4 jinterface-1.7.1 kernel-5.1.1 megaco-3.18.1 mnesia-4.14.2 observer-2.3 odbc-2.12 orber-3.8.2 os_mon-2.4.1 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.3 reltool-0.7.2 runtime_tools-1.11 sasl-3.0.2 snmp-5.2.4 ssh-4.4 ssl-8.1 stdlib-3.2 syntax_tools-2.1.1 tools-2.9 typer-0.9.11 wx-1.8 xmerl-1.3.12 :
@@ -36,10 +48,13 @@ OTP-19.0.3 : inets-6.3.2 kernel-5.0.1 ssl-8.0.1 # asn1-4.0.3 common_test-1.12.2
 OTP-19.0.2 : compiler-7.0.1 erts-8.0.2 stdlib-3.0.1 # asn1-4.0.3 common_test-1.12.2 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7 debugger-4.2 dialyzer-3.0.1 diameter-1.12 edoc-0.7.19 eldap-1.2.2 erl_docgen-0.5 erl_interface-3.9 et-1.6 eunit-2.3 gs-1.6.1 hipe-3.15.1 ic-4.4.1 inets-6.3.1 jinterface-1.7 kernel-5.0 megaco-3.18.1 mnesia-4.14 observer-2.2.1 odbc-2.11.2 orber-3.8.2 os_mon-2.4.1 otp_mibs-1.1.1 parsetools-2.1.2 percept-0.9 public_key-1.2 reltool-0.7.1 runtime_tools-1.10 sasl-3.0 snmp-5.2.3 ssh-4.3.1 ssl-8.0 syntax_tools-2.0 tools-2.8.5 typer-0.9.11 wx-1.7 xmerl-1.3.11 :
 OTP-19.0.1 : dialyzer-3.0.1 erts-8.0.1 inets-6.3.1 observer-2.2.1 ssh-4.3.1 tools-2.8.5 # asn1-4.0.3 common_test-1.12.2 compiler-7.0 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7 debugger-4.2 diameter-1.12 edoc-0.7.19 eldap-1.2.2 erl_docgen-0.5 erl_interface-3.9 et-1.6 eunit-2.3 gs-1.6.1 hipe-3.15.1 ic-4.4.1 jinterface-1.7 kernel-5.0 megaco-3.18.1 mnesia-4.14 odbc-2.11.2 orber-3.8.2 os_mon-2.4.1 otp_mibs-1.1.1 parsetools-2.1.2 percept-0.9 public_key-1.2 reltool-0.7.1 runtime_tools-1.10 sasl-3.0 snmp-5.2.3 ssl-8.0 stdlib-3.0 syntax_tools-2.0 typer-0.9.11 wx-1.7 xmerl-1.3.11 :
 OTP-19.0 : asn1-4.0.3 common_test-1.12.2 compiler-7.0 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7 debugger-4.2 dialyzer-3.0 diameter-1.12 edoc-0.7.19 eldap-1.2.2 erl_docgen-0.5 erl_interface-3.9 erts-8.0 et-1.6 eunit-2.3 gs-1.6.1 hipe-3.15.1 ic-4.4.1 inets-6.3 jinterface-1.7 kernel-5.0 megaco-3.18.1 mnesia-4.14 observer-2.2 odbc-2.11.2 orber-3.8.2 os_mon-2.4.1 otp_mibs-1.1.1 parsetools-2.1.2 percept-0.9 public_key-1.2 reltool-0.7.1 runtime_tools-1.10 sasl-3.0 snmp-5.2.3 ssh-4.3 ssl-8.0 stdlib-3.0 syntax_tools-2.0 tools-2.8.4 typer-0.9.11 wx-1.7 xmerl-1.3.11 # :
+OTP-18.3.4.7 : ssl-7.3.3.2 # asn1-4.0.2 common_test-1.12.1.1 compiler-6.0.3.1 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2.1 cosProperty-1.2 cosTime-1.2.1 cosTransactions-1.3.1 crypto-3.6.3.1 debugger-4.1.2 dialyzer-2.9 diameter-1.11.2 edoc-0.7.18 eldap-1.2.1.1 erl_docgen-0.4.2 erl_interface-3.8.2 erts-7.3.1.4 et-1.5.1 eunit-2.2.13 gs-1.6 hipe-3.15 ic-4.4 inets-6.2.4.1 jinterface-1.6.1 kernel-4.2 megaco-3.18 mnesia-4.13.4 observer-2.1.2 odbc-2.11.1 orber-3.8.1 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1.1 percept-0.8.11 public_key-1.1.1 reltool-0.7 runtime_tools-1.9.3 sasl-2.7 snmp-5.2.2 ssh-4.2.2.4 stdlib-2.8 syntax_tools-1.7 test_server-3.10 tools-2.8.3 typer-0.9.10 webtool-0.9.1 wx-1.6.1 xmerl-1.3.10 :
+OTP-18.3.4.6 : compiler-6.0.3.1 eldap-1.2.1.1 erts-7.3.1.4 ssh-4.2.2.4 # asn1-4.0.2 common_test-1.12.1.1 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2.1 cosProperty-1.2 cosTime-1.2.1 cosTransactions-1.3.1 crypto-3.6.3.1 debugger-4.1.2 dialyzer-2.9 diameter-1.11.2 edoc-0.7.18 erl_docgen-0.4.2 erl_interface-3.8.2 et-1.5.1 eunit-2.2.13 gs-1.6 hipe-3.15 ic-4.4 inets-6.2.4.1 jinterface-1.6.1 kernel-4.2 megaco-3.18 mnesia-4.13.4 observer-2.1.2 odbc-2.11.1 orber-3.8.1 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1.1 percept-0.8.11 public_key-1.1.1 reltool-0.7 runtime_tools-1.9.3 sasl-2.7 snmp-5.2.2 ssl-7.3.3.1 stdlib-2.8 syntax_tools-1.7 test_server-3.10 tools-2.8.3 typer-0.9.10 webtool-0.9.1 wx-1.6.1 xmerl-1.3.10 :
 OTP-18.3.4.5 : crypto-3.6.3.1 erts-7.3.1.3 inets-6.2.4.1 ssh-4.2.2.3 # asn1-4.0.2 common_test-1.12.1.1 compiler-6.0.3 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2.1 cosProperty-1.2 cosTime-1.2.1 cosTransactions-1.3.1 debugger-4.1.2 dialyzer-2.9 diameter-1.11.2 edoc-0.7.18 eldap-1.2.1 erl_docgen-0.4.2 erl_interface-3.8.2 et-1.5.1 eunit-2.2.13 gs-1.6 hipe-3.15 ic-4.4 jinterface-1.6.1 kernel-4.2 megaco-3.18 mnesia-4.13.4 observer-2.1.2 odbc-2.11.1 orber-3.8.1 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1.1 percept-0.8.11 public_key-1.1.1 reltool-0.7 runtime_tools-1.9.3 sasl-2.7 snmp-5.2.2 ssl-7.3.3.1 stdlib-2.8 syntax_tools-1.7 test_server-3.10 tools-2.8.3 typer-0.9.10 webtool-0.9.1 wx-1.6.1 xmerl-1.3.10 :
 OTP-18.3.4.4 : erts-7.3.1.2 # asn1-4.0.2 common_test-1.12.1.1 compiler-6.0.3 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2.1 cosProperty-1.2 cosTime-1.2.1 cosTransactions-1.3.1 crypto-3.6.3 debugger-4.1.2 dialyzer-2.9 diameter-1.11.2 edoc-0.7.18 eldap-1.2.1 erl_docgen-0.4.2 erl_interface-3.8.2 et-1.5.1 eunit-2.2.13 gs-1.6 hipe-3.15 ic-4.4 inets-6.2.4 jinterface-1.6.1 kernel-4.2 megaco-3.18 mnesia-4.13.4 observer-2.1.2 odbc-2.11.1 orber-3.8.1 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1.1 percept-0.8.11 public_key-1.1.1 reltool-0.7 runtime_tools-1.9.3 sasl-2.7 snmp-5.2.2 ssh-4.2.2.2 ssl-7.3.3.1 stdlib-2.8 syntax_tools-1.7 test_server-3.10 tools-2.8.3 typer-0.9.10 webtool-0.9.1 wx-1.6.1 xmerl-1.3.10 :
 OTP-18.3.4.3 : ssh-4.2.2.2 # asn1-4.0.2 common_test-1.12.1.1 compiler-6.0.3 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2.1 cosProperty-1.2 cosTime-1.2.1 cosTransactions-1.3.1 crypto-3.6.3 debugger-4.1.2 dialyzer-2.9 diameter-1.11.2 edoc-0.7.18 eldap-1.2.1 erl_docgen-0.4.2 erl_interface-3.8.2 erts-7.3.1.1 et-1.5.1 eunit-2.2.13 gs-1.6 hipe-3.15 ic-4.4 inets-6.2.4 jinterface-1.6.1 kernel-4.2 megaco-3.18 mnesia-4.13.4 observer-2.1.2 odbc-2.11.1 orber-3.8.1 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1.1 percept-0.8.11 public_key-1.1.1 reltool-0.7 runtime_tools-1.9.3 sasl-2.7 snmp-5.2.2 ssl-7.3.3.1 stdlib-2.8 syntax_tools-1.7 test_server-3.10 tools-2.8.3 typer-0.9.10 webtool-0.9.1 wx-1.6.1 xmerl-1.3.10 :
 OTP-18.3.4.2 : common_test-1.12.1.1 erts-7.3.1.1 ssl-7.3.3.1 # asn1-4.0.2 compiler-6.0.3 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2.1 cosProperty-1.2 cosTime-1.2.1 cosTransactions-1.3.1 crypto-3.6.3 debugger-4.1.2 dialyzer-2.9 diameter-1.11.2 edoc-0.7.18 eldap-1.2.1 erl_docgen-0.4.2 erl_interface-3.8.2 et-1.5.1 eunit-2.2.13 gs-1.6 hipe-3.15 ic-4.4 inets-6.2.4 jinterface-1.6.1 kernel-4.2 megaco-3.18 mnesia-4.13.4 observer-2.1.2 odbc-2.11.1 orber-3.8.1 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1.1 percept-0.8.11 public_key-1.1.1 reltool-0.7 runtime_tools-1.9.3 sasl-2.7 snmp-5.2.2 ssh-4.2.2.1 stdlib-2.8 syntax_tools-1.7 test_server-3.10 tools-2.8.3 typer-0.9.10 webtool-0.9.1 wx-1.6.1 xmerl-1.3.10 :
+OTP-18.3.4.1.1 : ssl-7.3.3.0.1 # asn1-4.0.2 common_test-1.12.1 compiler-6.0.3 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2.1 cosProperty-1.2 cosTime-1.2.1 cosTransactions-1.3.1 crypto-3.6.3 debugger-4.1.2 dialyzer-2.9 diameter-1.11.2 edoc-0.7.18 eldap-1.2.1 erl_docgen-0.4.2 erl_interface-3.8.2 erts-7.3.1 et-1.5.1 eunit-2.2.13 gs-1.6 hipe-3.15 ic-4.4 inets-6.2.4 jinterface-1.6.1 kernel-4.2 megaco-3.18 mnesia-4.13.4 observer-2.1.2 odbc-2.11.1 orber-3.8.1 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1.1 percept-0.8.11 public_key-1.1.1 reltool-0.7 runtime_tools-1.9.3 sasl-2.7 snmp-5.2.2 ssh-4.2.2.1 stdlib-2.8 syntax_tools-1.7 test_server-3.10 tools-2.8.3 typer-0.9.10 webtool-0.9.1 wx-1.6.1 xmerl-1.3.10 :
 OTP-18.3.4.1 : ssh-4.2.2.1 # asn1-4.0.2 common_test-1.12.1 compiler-6.0.3 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2.1 cosProperty-1.2 cosTime-1.2.1 cosTransactions-1.3.1 crypto-3.6.3 debugger-4.1.2 dialyzer-2.9 diameter-1.11.2 edoc-0.7.18 eldap-1.2.1 erl_docgen-0.4.2 erl_interface-3.8.2 erts-7.3.1 et-1.5.1 eunit-2.2.13 gs-1.6 hipe-3.15 ic-4.4 inets-6.2.4 jinterface-1.6.1 kernel-4.2 megaco-3.18 mnesia-4.13.4 observer-2.1.2 odbc-2.11.1 orber-3.8.1 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1.1 percept-0.8.11 public_key-1.1.1 reltool-0.7 runtime_tools-1.9.3 sasl-2.7 snmp-5.2.2 ssl-7.3.3 stdlib-2.8 syntax_tools-1.7 test_server-3.10 tools-2.8.3 typer-0.9.10 webtool-0.9.1 wx-1.6.1 xmerl-1.3.10 :
 OTP-18.3.4 : inets-6.2.4 ssl-7.3.3 # asn1-4.0.2 common_test-1.12.1 compiler-6.0.3 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2.1 cosProperty-1.2 cosTime-1.2.1 cosTransactions-1.3.1 crypto-3.6.3 debugger-4.1.2 dialyzer-2.9 diameter-1.11.2 edoc-0.7.18 eldap-1.2.1 erl_docgen-0.4.2 erl_interface-3.8.2 erts-7.3.1 et-1.5.1 eunit-2.2.13 gs-1.6 hipe-3.15 ic-4.4 jinterface-1.6.1 kernel-4.2 megaco-3.18 mnesia-4.13.4 observer-2.1.2 odbc-2.11.1 orber-3.8.1 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1.1 percept-0.8.11 public_key-1.1.1 reltool-0.7 runtime_tools-1.9.3 sasl-2.7 snmp-5.2.2 ssh-4.2.2 stdlib-2.8 syntax_tools-1.7 test_server-3.10 tools-2.8.3 typer-0.9.10 webtool-0.9.1 wx-1.6.1 xmerl-1.3.10 :
 OTP-18.3.3 : common_test-1.12.1 inets-6.2.3 ssl-7.3.2 # asn1-4.0.2 compiler-6.0.3 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2.1 cosProperty-1.2 cosTime-1.2.1 cosTransactions-1.3.1 crypto-3.6.3 debugger-4.1.2 dialyzer-2.9 diameter-1.11.2 edoc-0.7.18 eldap-1.2.1 erl_docgen-0.4.2 erl_interface-3.8.2 erts-7.3.1 et-1.5.1 eunit-2.2.13 gs-1.6 hipe-3.15 ic-4.4 jinterface-1.6.1 kernel-4.2 megaco-3.18 mnesia-4.13.4 observer-2.1.2 odbc-2.11.1 orber-3.8.1 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1.1 percept-0.8.11 public_key-1.1.1 reltool-0.7 runtime_tools-1.9.3 sasl-2.7 snmp-5.2.2 ssh-4.2.2 stdlib-2.8 syntax_tools-1.7 test_server-3.10 tools-2.8.3 typer-0.9.10 webtool-0.9.1 wx-1.6.1 xmerl-1.3.10 :
diff --git a/system/doc/Makefile b/system/doc/Makefile
index eb900b933f..0c4adf6554 100644
--- a/system/doc/Makefile
+++ b/system/doc/Makefile
@@ -9,11 +9,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # The Initial Developer of the Original Code is Ericsson Utvecklings AB.
 # Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
 # AB. All Rights Reserved.''
-# 
+#
 #     $Id$
 #
 include $(ERL_TOP)/make/target.mk
@@ -38,10 +38,9 @@ SUB_DIRECTORIES = design_principles \
 
 #		  pics \
 
-SPECIAL_TARGETS = 
+SPECIAL_TARGETS =
 
 #
 # Default Subdir Targets
 #
 include $(ERL_TOP)/make/otp_subdir.mk
-
diff --git a/system/doc/design_principles/Makefile b/system/doc/design_principles/Makefile
index 937b3e28c8..5743a50b47 100644
--- a/system/doc/design_principles/Makefile
+++ b/system/doc/design_principles/Makefile
@@ -1,8 +1,8 @@
 #
 # %CopyrightBegin%
-# 
+#
 # Copyright Ericsson AB 1997-2016. All Rights Reserved.
-# 
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# 
+#
 # %CopyrightEnd%
 #
 #
@@ -37,7 +37,7 @@ RELSYSDIR = "$(RELEASE_PATH)/doc/design_principles"
 # ----------------------------------------------------
 XML_PART_FILES = part.xml
 
-include xmlfiles.mk 
+include xmlfiles.mk
 
 XML_CHAPTER_FILES=$(DESIGN_PRINCIPLES_CHAPTER_FILES)
 
@@ -46,7 +46,6 @@ TOPDOCDIR=..
 BOOK_FILES = book.xml
 
 GIF_FILES = \
-	note.gif \
 	clientserver.gif \
 	dist1.gif \
 	dist2.gif \
@@ -66,7 +65,7 @@ IMAGE_FILES = $(GIF_FILES) $(PNG_FILES)
 
 XML_FILES = \
 	$(BOOK_FILES) $(XML_CHAPTER_FILES) \
-	$(XML_PART_FILES) 
+	$(XML_PART_FILES)
 
 # ----------------------------------------------------
 
@@ -78,10 +77,10 @@ HTMLDIR = ../html/design_principles
 HTML_UG_FILE = $(HTMLDIR)/users_guide.html
 
 # ----------------------------------------------------
-# FLAGS 
+# FLAGS
 # ----------------------------------------------------
-XML_FLAGS += 
-DVIPS_FLAGS += 
+XML_FLAGS +=
+DVIPS_FLAGS +=
 
 # ----------------------------------------------------
 # Targets
@@ -102,16 +101,16 @@ html: $(HTML_UG_FILE) images
 
 images: $(IMAGE_FILES:%=$(HTMLDIR)/%)
 
-debug opt: 
+debug opt:
 
 clean clean_docs:
 	rm -rf $(HTMLDIR)
 	rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo)
-	rm -f errs core *~ 
+	rm -f errs core *~
 
 # ----------------------------------------------------
 # Release Target
-# ---------------------------------------------------- 
+# ----------------------------------------------------
 include $(ERL_TOP)/make/otp_release_targets.mk
 
 release_docs_spec: docs
@@ -123,5 +122,3 @@ release_docs_spec: docs
 
 
 release_spec:
-
-
diff --git a/system/doc/design_principles/gen_server_concepts.xml b/system/doc/design_principles/gen_server_concepts.xml
index c1b98189d5..3a1f876646 100644
--- a/system/doc/design_principles/gen_server_concepts.xml
+++ b/system/doc/design_principles/gen_server_concepts.xml
@@ -32,7 +32,7 @@
   <marker id="gen_server"></marker>
   <p>This section is to be read with the
     <seealso marker="stdlib:gen_server">gen_server(3)</seealso>
-    manual page in <c>stdblib</c>, where all interface functions and
+    manual page in <c>stdlib</c>, where all interface functions and
     callback functions are described in detail.</p>
 
   <section>
diff --git a/system/doc/design_principles/note.gif b/system/doc/design_principles/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/system/doc/design_principles/note.gif
+++ /dev/null
diff --git a/system/doc/design_principles/warning.gif b/system/doc/design_principles/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/system/doc/design_principles/warning.gif
+++ /dev/null
diff --git a/system/doc/efficiency_guide/profiling.xml b/system/doc/efficiency_guide/profiling.xml
index bf50a03fa6..f185456158 100644
--- a/system/doc/efficiency_guide/profiling.xml
+++ b/system/doc/efficiency_guide/profiling.xml
@@ -41,30 +41,87 @@
     <p>Erlang/OTP contains several tools to help finding bottlenecks:</p>
 
     <list type="bulleted">
-      <item><c>fprof</c> provides the most detailed information about
-      where the program time is spent, but it significantly slows down the
-      program it profiles.</item>
-
-      <item><p><c>eprof</c> provides time information of each function
-      used in the program. No call graph is produced, but <c>eprof</c> has
-      considerable less impact on the program it profiles.</p>
-      <p>If the program is too large to be profiled by <c>fprof</c> or
-      <c>eprof</c>, the <c>cover</c> and <c>cprof</c> tools can be used
-      to locate code parts that are to be more thoroughly profiled using
-      <c>fprof</c> or <c>eprof</c>.</p></item>
-
-      <item><c>cover</c> provides execution counts per line per
-      process, with less overhead than <c>fprof</c>. Execution counts
-      can, with some caution, be used to locate potential performance
-      bottlenecks.</item>
-
-      <item><c>cprof</c> is the most lightweight tool, but it only
-      provides execution counts on a function basis (for all processes,
-      not per process).</item>
+      <item><p><seealso marker="tools:fprof"><c>fprof</c></seealso> provides
+          the most detailed information about where the program time is spent,
+          but it significantly slows down the program it profiles.</p></item>
+
+      <item><p><seealso marker="tools:eprof"><c>eprof</c></seealso> provides
+          time information of each function used in the program. No call graph is
+          produced, but <c>eprof</c> has considerable less impact on the program it
+          profiles.</p>
+        <p>If the program is too large to be profiled by <c>fprof</c> or
+          <c>eprof</c>, <c>cprof</c> can be used to locate code parts that
+          are to be more thoroughly profiled using <c>fprof</c> or <c>eprof</c>.</p></item>
+
+      <item><p><seealso marker="tools:cprof"><c>cprof</c></seealso> is the
+          most lightweight tool, but it only provides execution counts on a
+          function basis (for all processes, not per process).</p></item>
+
+      <item><p><seealso marker="runtime_tools:dbg"><c>dbg</c></seealso> is the
+          generic erlang tracing frontend. By using the <c>timestamp</c> or
+          <c>cpu_timestamp</c> options it can be used to time how long function
+          calls in a live system take.</p></item>
+
+      <item><p><seealso marker="tools:lcnt"><c>lcnt</c></seealso> is used
+          to find contention points in the Erlang Run-Time System's internal
+          locking mechanisms. It is useful when looking for bottlenecks in
+          interaction between process, port, ets tables and other entities
+          that can be run in parallel.</p></item>
+
     </list>
 
     <p>The tools are further described in
     <seealso marker="#profiling_tools">Tools</seealso>.</p>
+
+    <p>There are also several open source tools outside of Erlang/OTP
+    that can be used to help profiling. Some of them are:</p>
+
+    <list type="bulleted">
+      <item><url href="https://github.com/isacssouza/erlgrind">erlgrind</url>
+      can be used to visualize fprof data in kcachegrind.</item>
+      <item><url href="https://github.com/proger/eflame">eflame</url>
+      is an alternative to fprof that displays the profiling output as a flamegraph.</item>
+      <item><url href="https://ferd.github.io/recon/index.html">recon</url>
+      is a collection of Erlang profiling and debugging tools.
+      This tool comes with an accompanying E-book called
+      <url href="https://www.erlang-in-anger.com/">Erlang in Anger</url>.</item>
+    </list>
+  </section>
+
+  <section>
+    <title>Memory profiling</title>
+    <pre>eheap_alloc: Cannot allocate 1234567890 bytes of memory (of type "heap").</pre>
+    <p>The above slogan is one of the more common reasons for Erlang to terminate.
+      For unknown reasons the Erlang Run-Time System failed to allocate memory to
+      use. When this happens a crash dump is generated that contains information
+      about the state of the system as it ran out of mmeory. Use the
+      <seealso marker="observer:cdv"><c>crashdump_viewer</c></seealso> to get a
+      view of the memory is being used. Look for processes with large heaps or
+      many messages, large ets tables, etc.</p>
+    <p>When looking at memory usage in a running system the most basic function
+      to get information from is <seealso marker="erts:erlang#memory/0"><c>
+      erlang:memory()</c></seealso>. It returns the current memory usage
+      of the system. <seealso marker="tools:instrument"><c>instrument(3)</c></seealso>
+      can be used to get a more detailed breakdown of where memory is used.</p>
+    <p>Processes, ports and ets tables can then be inspecting using their
+      respective info functions, i.e.
+      <seealso marker="erts:erlang#process_info_memory"><c>erlang:process_info/2
+      </c></seealso>,
+      <seealso marker="erts:erlang#port_info_memory"><c>erlang:port_info/2
+      </c></seealso> and
+      <seealso marker="stdlib:ets#info/1"><c>ets:info/1</c></seealso>.
+    </p>
+    <p>Sometimes the system can enter a state where the reported memory
+      from <c>erlang:memory(total)</c> is very different from the
+      memory reported by the OS. This can be because of internal
+      fragmentation within the Erlang Run-Time System. Data about
+      how memory is allocated can be retrieved using
+      <seealso marker="erts:erlang#system_info_allocator">
+        <c>erlang:system_info(allocator)</c></seealso>.
+      The data you get from that function is very raw and not very plesant to read.
+      <url href="http://ferd.github.io/recon/recon_alloc.html">recon_alloc</url>
+      can be used to extract useful information from system_info
+      statistics counters.</p>
   </section>
 
   <section>
@@ -80,6 +137,22 @@
       tools on the whole system. Instead you want to concentrate on
       central processes and modules, which contribute for a big part
       of the execution.</p>
+
+    <p>There are also some tools that can be used to get a view of the
+      whole system with more or less overhead.</p>
+    <list type="bulleted">
+      <item><seealso marker="observer:observer"><c>observer</c></seealso>
+      is a GUI tool that can connect to remote nodes and display a
+      variety of information about the running system.</item>
+      <item><seealso marker="observer:etop"><c>etop</c></seealso>
+      is a command line tool that can connect to remote nodes and
+      display information similar to what the UNIX tool top shows.</item>
+      <item><seealso marker="runtime_tools:msacc"><c>msacc</c></seealso>
+      allows the user to get a view of what the Erlang Run-Time system
+      is spending its time doing. Has a very low overhead, which makes it
+      useful to run in heavily loaded systems to get some idea of where
+      to start doing more granular profiling.</item>
+    </list>
   </section>
 
   <section>
@@ -128,7 +201,7 @@
       performance impact. Using <c>fprof</c> is just a matter of
       calling a few library functions, see the
       <seealso marker="tools:fprof">fprof</seealso> manual page in
-      Tools .<c>fprof</c> was introduced in R8.</p>
+      Tools.</p>
     </section>
 
     <section>
@@ -142,20 +215,6 @@
     </section>
 
     <section>
-      <title>cover</title>
-      <p>The primary use of <c>cover</c> is coverage analysis to verify
-      test cases, making sure that all relevant code is covered.
-      <c>cover</c> counts how many times each executable line of code
-      is executed when a program is run, on a per module basis.</p>
-      <p>Clearly, this information can be used to determine what
-      code is run very frequently and can therefore be subject for
-      optimization. Using <c>cover</c> is just a matter of calling a
-      few library functions, see the
-      <seealso marker="tools:cover">cover</seealso> manual page in
-      Tools.</p>
-    </section>
-
-    <section>
       <title>cprof</title>
       <p><c>cprof</c> is something in between <c>fprof</c> and
       <c>cover</c> regarding features. It counts how many times each
@@ -202,16 +261,6 @@
           <cell>No</cell>
         </row>
         <row>
-          <cell><c>cover</c></cell>
-          <cell>Per module to screen/file</cell>
-          <cell>Small</cell>
-          <cell>Moderate slowdown</cell>
-          <cell>Yes, per line</cell>
-          <cell>No</cell>
-          <cell>No</cell>
-          <cell>No</cell>
-        </row>
-        <row>
           <cell><c>cprof</c></cell>
           <cell>Per module to caller</cell>
           <cell>Small</cell>
@@ -224,6 +273,37 @@
         <tcaption>Tool Summary</tcaption>
       </table>
     </section>
+
+    <section>
+      <title>dbg</title>
+      <p><c>dbg</c> is a generic Erlang trace tool. By using the
+      <c>timestamp</c> or <c>cpu_timestamp</c> options it can be used
+      as a precision instrument to profile how long time a function
+      call takes for a specific process. This can be very useful when
+      trying to understand where time is spent in a heavily loaded
+      system as it is possible to limit the scope of what is profiled
+      to be very small.
+      For more information, see the
+      <seealso marker="runtime_tools:dbg">dbg</seealso> manual page in
+      Runtime Tools.</p>
+    </section>
+
+    <section>
+      <title>lcnt</title>
+      <p><c>lcnt</c> is used to profile interactions inbetween
+        entities that run in parallel. For example if you have
+        a process that all other processes in the system needs
+        to interact with (maybe it has some global configuration),
+        then <c>lcnt</c> can be used to figure out if the interaction
+        with that process is a problem.</p>
+      <p>In the Erlang Run-time System entities are only run in parallel
+        when there are multiple schedulers. Therefore <c>lcnt</c> will
+        show more contention points (and thus be more useful) on systems
+        using many schedulers on many cores.</p>
+      <p>For more information, see the
+        <seealso marker="tools:lcnt">lcnt</seealso> manual page in Tools.</p>
+    </section>
+
   </section>
 
   <section>
@@ -282,4 +362,3 @@
     </list>
   </section>
 </chapter>
-
diff --git a/system/doc/efficiency_guide/xmlfiles.mk b/system/doc/efficiency_guide/xmlfiles.mk
index 88df9417f5..23c0d991b4 100644
--- a/system/doc/efficiency_guide/xmlfiles.mk
+++ b/system/doc/efficiency_guide/xmlfiles.mk
@@ -29,5 +29,5 @@ EFF_GUIDE_CHAPTER_FILES = \
 	processes.xml \
 	profiling.xml \
 	tablesDatabases.xml \
-	drivers.xml
-
+	drivers.xml \
+	retired_myths.xml
diff --git a/system/doc/embedded/note.gif b/system/doc/embedded/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/system/doc/embedded/note.gif
+++ /dev/null
diff --git a/system/doc/embedded/warning.gif b/system/doc/embedded/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/system/doc/embedded/warning.gif
+++ /dev/null
diff --git a/system/doc/installation_guide/note.gif b/system/doc/installation_guide/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/system/doc/installation_guide/note.gif
+++ /dev/null
diff --git a/system/doc/installation_guide/warning.gif b/system/doc/installation_guide/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/system/doc/installation_guide/warning.gif
+++ /dev/null
diff --git a/system/doc/oam/note.gif b/system/doc/oam/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/system/doc/oam/note.gif
+++ /dev/null
diff --git a/system/doc/oam/oam_intro.xml b/system/doc/oam/oam_intro.xml
index d3867f03ca..ead8c026b9 100644
--- a/system/doc/oam/oam_intro.xml
+++ b/system/doc/oam/oam_intro.xml
@@ -211,7 +211,7 @@ snmp:c("MY-MIB", [{il, ["sasl/priv/mibs"]}]).</code>
 
       <p>The following MIBs are defined in the OTP system:</p>
       <list type="bulleted">
-	<item><p><c>OTP-REG)</c> (in SASL) contains the top-level
+	<item><p><c>OTP-REG</c> (in SASL) contains the top-level
 	OTP registration objects, used by all other MIBs.</p></item>
 	<item><p><c>OTP-TC</c> (in SASL) contains the general
 	Textual Conventions, which can be used by any other MIB.</p></item>
diff --git a/system/doc/oam/warning.gif b/system/doc/oam/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/system/doc/oam/warning.gif
+++ /dev/null
diff --git a/system/doc/reference_manual/errors.xml b/system/doc/reference_manual/errors.xml
index b16c5da6eb..16d3e7590e 100644
--- a/system/doc/reference_manual/errors.xml
+++ b/system/doc/reference_manual/errors.xml
@@ -108,14 +108,55 @@
       (see <seealso marker="#exit_reasons">Exit Reason</seealso>),
       and a stack trace (which aids in finding the code location of
       the exception).</p>
-    <p>The stack trace can be retrieved using
-      <c>erlang:get_stacktrace/0</c>
-      from within a <c>try</c> expression, and is returned for 
+    <p>The stack trace can be be bound to a variable from within
+      a <c>try</c> expression, and is returned for
       exceptions of class <c>error</c> from a <c>catch</c> expression.</p>
     <p>An exception of class <c>error</c> is also known as a run-time 
       error.</p>
+
+      <section>
+	<title>The call-stack back trace (stacktrace)</title>
+        <p>The stack back-trace (<em>stacktrace</em>) is a list of
+          <c>{Module,Function,Arity,Location}</c>
+          tuples. The field <c>Arity</c> in the first tuple can be the
+          argument list of that function call instead of an arity integer,
+          depending on the exception.</p>
+
+	<p><c>Location</c> is a (possibly empty) list of two-tuples
+	that can indicate the location in the source code of the
+	function.  The first element is an atom describing the type of
+	information in the second element. The following items can
+	occur:</p>
+	<taglist>
+          <tag><c>file</c></tag>
+          <item>The second element of the tuple is a string (list of
+          characters) representing the filename of the source file
+          of the function.
+          </item>
+          <tag><c>line</c></tag>
+          <item>The second element of the tuple is the line number
+          (an integer &gt; 0) in the source file
+          where the exception occurred or the function was called.
+          </item>
+	</taglist>
+	<warning><p>Developers should rely on stacktrace entries only for
+	debugging purposes.</p>
+	<p>The VM performs tail call optimization, which
+	does not add new entries to the stacktrace, and also limits stacktraces
+	to a certain depth. Furthermore, compiler options, optimizations and
+	future changes may add or remove stacktrace entries, causing any code
+	that expects the stacktrace to be in a certain order or contain specific
+	items to fail.</p>
+	<p>The only exception to this rule is the class <c>error</c> with the
+	reason <c>undef</c> which is guaranteed to include the <c>Module</c>,
+	<c>Function</c> and <c>Arity</c> of the attempted
+	function as the first stacktrace entry.</p>
+	</warning>
+      </section>
+
   </section>
 
+
   <section>
     <title>Handling of Run-time Errors in Erlang</title>
 
diff --git a/system/doc/reference_manual/expressions.xml b/system/doc/reference_manual/expressions.xml
index cf2d5034aa..94e40dd077 100644
--- a/system/doc/reference_manual/expressions.xml
+++ b/system/doc/reference_manual/expressions.xml
@@ -1340,9 +1340,9 @@ hello</pre>
     <code type="none">
 try Exprs
 catch
-    [Class1:]ExceptionPattern1 [when ExceptionGuardSeq1] ->
+    Class1:ExceptionPattern1[:Stacktrace] [when ExceptionGuardSeq1] ->
         ExceptionBody1;
-    [ClassN:]ExceptionPatternN [when ExceptionGuardSeqN] ->
+    ClassN:ExceptionPatternN[:Stacktrace] [when ExceptionGuardSeqN] ->
         ExceptionBodyN
 end</code>
     <p>This is an enhancement of
@@ -1362,10 +1362,12 @@ end</code>
       the evaluation. In that case the exception is caught and
       the patterns <c>ExceptionPattern</c> with the right exception
       class <c>Class</c> are sequentially matched against the caught
-      exception. An omitted <c>Class</c> is shorthand for <c>throw</c>.
-      If a match succeeds and the optional guard sequence
+      exception. If a match succeeds and the optional guard sequence
       <c>ExceptionGuardSeq</c> is true, the corresponding
       <c>ExceptionBody</c> is evaluated to become the return value.</p>
+    <p><c>Stacktrace</c>, if specified, must be the name of a variable
+      (not a pattern). The stack trace is bound to the variable when
+      the corresponding <c>ExceptionPattern</c> matches.</p>
     <p>If an exception occurs during evaluation of <c>Exprs</c> but
       there is no matching <c>ExceptionPattern</c> of the right
       <c>Class</c> with a true guard sequence, the exception is passed
@@ -1373,6 +1375,18 @@ end</code>
       expression.</p>
     <p>If an exception occurs during evaluation of <c>ExceptionBody</c>,
       it is not caught.</p>
+    <p>It is allowed to omit <c>Class</c> and <c>Stacktrace</c>.
+      An omitted <c>Class</c> is shorthand for <c>throw</c>:</p>
+
+    <code type="none">
+try Exprs
+catch
+    ExceptionPattern1 [when ExceptionGuardSeq1] ->
+        ExceptionBody1;
+    ExceptionPatternN [when ExceptionGuardSeqN] ->
+        ExceptionBodyN
+end</code>
+
     <p>The <c>try</c> expression can have an <c>of</c>
       section:
       </p>
@@ -1384,10 +1398,10 @@ try Exprs of
     PatternN [when GuardSeqN] ->
         BodyN
 catch
-    [Class1:]ExceptionPattern1 [when ExceptionGuardSeq1] ->
+    Class1:ExceptionPattern1[:Stacktrace] [when ExceptionGuardSeq1] ->
         ExceptionBody1;
     ...;
-    [ClassN:]ExceptionPatternN [when ExceptionGuardSeqN] ->
+    ClassN:ExceptionPatternN[:Stacktrace] [when ExceptionGuardSeqN] ->
         ExceptionBodyN
 end</code>
     <p>If the evaluation of <c>Exprs</c> succeeds without an exception,
@@ -1408,10 +1422,10 @@ try Exprs of
     PatternN [when GuardSeqN] ->
         BodyN
 catch
-    [Class1:]ExceptionPattern1 [when ExceptionGuardSeq1] ->
+    Class1:ExceptionPattern1[:Stacktrace] [when ExceptionGuardSeq1] ->
         ExceptionBody1;
     ...;
-    [ClassN:]ExceptionPatternN [when ExceptionGuardSeqN] ->
+    ClassN:ExceptionPatternN[:Stacktrace] [when ExceptionGuardSeqN] ->
         ExceptionBodyN
 after
     AfterBody
@@ -1470,7 +1484,7 @@ try Expr
 catch
     throw:Term -> Term;
     exit:Reason -> {'EXIT',Reason}
-    error:Reason -> {'EXIT',{Reason,erlang:get_stacktrace()}}
+    error:Reason:Stk -> {'EXIT',{Reason,Stk}}
 end</code>
   </section>
 
diff --git a/system/doc/reference_manual/xmlfiles.mk b/system/doc/reference_manual/xmlfiles.mk
index 61637ae701..fffcbdd911 100644
--- a/system/doc/reference_manual/xmlfiles.mk
+++ b/system/doc/reference_manual/xmlfiles.mk
@@ -30,5 +30,6 @@ REF_MAN_CHAPTER_FILES = \
 	processes.xml \
 	distributed.xml \
 	code_loading.xml \
-	ports.xml
-
+	ports.xml \
+	character_set.xml \
+	typespec.xml
diff --git a/system/doc/system_architecture_intro/note.gif b/system/doc/system_architecture_intro/note.gif
deleted file mode 100644
index 6fffe30419..0000000000
--- a/system/doc/system_architecture_intro/note.gif
+++ /dev/null
diff --git a/system/doc/system_architecture_intro/warning.gif b/system/doc/system_architecture_intro/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/system/doc/system_architecture_intro/warning.gif
+++ /dev/null
diff --git a/system/doc/system_principles/warning.gif b/system/doc/system_principles/warning.gif
deleted file mode 100644
index 96af52360e..0000000000
--- a/system/doc/system_principles/warning.gif
+++ /dev/null
diff --git a/system/doc/top/Makefile b/system/doc/top/Makefile
index 116ec688fa..b6a80aadf5 100644
--- a/system/doc/top/Makefile
+++ b/system/doc/top/Makefile
@@ -50,6 +50,8 @@ include ../tutorial/xmlfiles.mk
 include ../design_principles/xmlfiles.mk
 include ../oam/xmlfiles.mk
 
+BOOK_FILES = book.xml
+
 XML_FILES = \
 	$(INST_GUIDE_CHAPTER_FILES:%=../installation_guide/%) \
 	$(SYSTEM_PRINCIPLES_CHAPTER_FILES:%=../system_principles/%) \
@@ -70,9 +72,9 @@ XML_FILES = \
 	../efficiency_guide/part.xml \
 	../tutorial/part.xml \
 	../design_principles/part.xml \
-	../oam/part.xml
+	../oam/part.xml \
+	$(BOOK_FILES)
 
-BOOK_FILES = book.xml
 
 XMLLINT_SRCDIRS= ../installation_guide:../system_principles:../embedded:../getting_started:../reference_manual:../programming_examples:../efficiency_guide:../tutorial:../design_principles:../oam
 HTMLDIR= ../html