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Patch Package:           OTP 20.3
Git Tag:                 OTP-20.3
Date:                    2018-03-14
Trouble Report Id:       OTP-13882, OTP-14194, OTP-14204, OTP-14725,
                         OTP-14760, OTP-14816, OTP-14817, OTP-14820,
                         OTP-14828, OTP-14832, OTP-14839, OTP-14840,
                         OTP-14842, OTP-14843, OTP-14846, OTP-14847,
                         OTP-14850, OTP-14852, OTP-14854, OTP-14856,
                         OTP-14858, OTP-14860, OTP-14863, OTP-14871,
                         OTP-14873, OTP-14876, OTP-14879, OTP-14881,
                         OTP-14886, OTP-14889, OTP-14890, OTP-14891,
                         OTP-14892, OTP-14898, OTP-14908, OTP-14911,
                         OTP-14912, OTP-14913, OTP-14919, OTP-14920,
                         OTP-14921, OTP-14925, OTP-14926, OTP-14929,
                         OTP-14933, OTP-14938, OTP-14939, OTP-14940,
                         OTP-14942, OTP-14944, OTP-14947, OTP-14952,
                         OTP-14953
Seq num:                 ERIERL-117, ERIERL-124, ERIERL-144, ERL-527,
                         ERL-529, ERL-534, ERL-537, ERL-544, ERL-548,
                         ERL-551, ERL-564, ERL-565
System:                  OTP
Release:                 20
Application:             asn1-5.0.5, common_test-1.15.4,
                         compiler-7.1.5, crypto-4.2.1, dialyzer-3.2.4,
                         diameter-2.1.4, erts-9.3, hipe-3.17.1,
                         inets-6.5, kernel-5.4.3, observer-2.7,
                         runtime_tools-1.12.5, snmp-5.2.10, ssh-4.6.6,
                         ssl-8.2.4, stdlib-3.4.4, tools-2.11.2
Predecessor:             OTP 20.2.4

 Check out the git tag OTP-20.3, and build a full OTP system including
 documentation. Apply one or more applications from this build as
 patches to your installation using the 'otp_patch_apply' tool. For
 information on install requirements, see descriptions for each
 application version below.

 ---------------------------------------------------------------------
 --- HIGHLIGHTS ------------------------------------------------------
 ---------------------------------------------------------------------

  OTP-14760    Application(s): ssl

               Added new API functions to facilitate cipher suite
               handling


 ---------------------------------------------------------------------
 --- POTENTIAL INCOMPATIBILITIES -------------------------------------
 ---------------------------------------------------------------------

  OTP-14850    Application(s): erts, hipe
               Related Id(s): PR-1664

               Fix HiPE bug for binary constructs like <<X/utf8>>
               which could in rare cases cause faulty results or VM
               crash.

               This fix affects both the hipe compiler and erts
               runtime in an *incompatible* way. Old hipe compiled
               files need to be recompiled to load and run properly as
               native.


 ---------------------------------------------------------------------
 --- asn1-5.0.5 ------------------------------------------------------
 ---------------------------------------------------------------------

 The asn1-5.0.5 application can be applied independently of other
 applications on a full OTP 20 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13882    Application(s): asn1
               Related Id(s): ERIERL-144

               Dialyzer suppression has been added for the generated
               ASN.1 helper function to_bitstring/1 that previously
               created irrelevant warnings.


 Full runtime dependencies of asn1-5.0.5: erts-7.0, kernel-3.0,
 stdlib-2.0


 ---------------------------------------------------------------------
 --- common_test-1.15.4 ----------------------------------------------
 ---------------------------------------------------------------------

 The common_test-1.15.4 application can be applied independently of
 other applications on a full OTP 20 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-14953    Application(s): common_test

               Fixed problem with 'skip_groups' in combination with
               'all suites' option in test specification.


 Full runtime dependencies of common_test-1.15.4: compiler-6.0,
 crypto-3.6, debugger-4.1, erts-7.0, inets-6.0, kernel-4.0,
 observer-2.1, runtime_tools-1.8.16, sasl-2.4.2, snmp-5.1.2, ssh-4.0,
 stdlib-3.4, syntax_tools-1.7, tools-2.8, xmerl-1.3.8


 ---------------------------------------------------------------------
 --- compiler-7.1.5 --------------------------------------------------
 ---------------------------------------------------------------------

 The compiler-7.1.5 application can be applied independently of other
 applications on a full OTP 20 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-14863    Application(s): compiler

               The internal compiler pass (beam_validator) that
               validates the generated code has been strengthened.

               When compiling from BEAM assembly code, the beam_type
               optimizer pass could make the code unsafe. Corrected.


  OTP-14898    Application(s): compiler

               Corrected optimizations of integers matched out from
               binaries and used in bit operations.


 Full runtime dependencies of compiler-7.1.5: crypto-3.6, erts-9.0,
 hipe-3.12, kernel-4.0, stdlib-2.5


 ---------------------------------------------------------------------
 --- crypto-4.2.1 ----------------------------------------------------
 ---------------------------------------------------------------------

 The crypto-4.2.1 application can be applied independently of other
 applications on a full OTP 20 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-14873    Application(s): crypto

               Fix build error caused by removed RSA padding functions
               in LibreSSL >= 2.6.1


 Full runtime dependencies of crypto-4.2.1: erts-9.0, kernel-5.3,
 stdlib-3.4


 ---------------------------------------------------------------------
 --- dialyzer-3.2.4 --------------------------------------------------
 ---------------------------------------------------------------------

 Note! The dialyzer-3.2.4 application can *not* be applied
       independently of other applications on an arbitrary OTP 20
       installation.

       On a full OTP 20 installation, also the following runtime
       dependency has to be satisfied:
       -- hipe-3.16.1 (first satisfied in OTP 20.1)


 --- Fixed Bugs and Malfunctions ---

  OTP-14858    Application(s): dialyzer
               Related Id(s): ERL-551

               Fix bugs concerning erlang:abs/1 and erlang:bsl/2.


  OTP-14911    Application(s): dialyzer

               Fix a bug that caused Dialyzer to crash instead of
               emitting a warning.


  OTP-14925    Application(s): dialyzer
               Related Id(s): ERL-565

               Fix a bug concerning parameterized opaque types.


 Full runtime dependencies of dialyzer-3.2.4: compiler-7.0, erts-9.0,
 hipe-3.16.1, kernel-5.3, stdlib-3.4, syntax_tools-2.0, wx-1.2


 ---------------------------------------------------------------------
 --- diameter-2.1.4 --------------------------------------------------
 ---------------------------------------------------------------------

 The diameter-2.1.4 application can be applied independently of other
 applications on a full OTP 20 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-14839    Application(s): diameter

               Fix close of diameter_tcp/sctp listening socket at
               diameter:remove_transport/2, that was broken in
               diameter 2.1. A reconfigured transport could not listen
               on the same endpoint as a result.


  OTP-14947    Application(s): diameter
               Related Id(s): ERIERL-124

               Fix handling of SUSPECT connections at service
               termination. A connection with this watchdog state
               caused diameter_service:terminate/2 to fail.


 Full runtime dependencies of diameter-2.1.4: erts-6.4, kernel-3.2,
 ssl-6.0, stdlib-2.4


 ---------------------------------------------------------------------
 --- erts-9.3 --------------------------------------------------------
 ---------------------------------------------------------------------

 The erts-9.3 application can be applied independently of other
 applications on a full OTP 20 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-14840    Application(s): erts, otp
               Related Id(s): ERL-529

               Fixed a configure test for libz internals that
               unintentionally caused various native code in OTP to
               link against libz. Under certain circumstances this
               caused the build of OTP to fail.


  OTP-14847    Application(s): erts
               Related Id(s): ERL-544

               File names containing unicode codepoints larger than
               255 were not correctly encoded in stack traces.


  OTP-14850    Application(s): erts, hipe
               Related Id(s): PR-1664

               *** POTENTIAL INCOMPATIBILITY ***

               Fix HiPE bug for binary constructs like <<X/utf8>>
               which could in rare cases cause faulty results or VM
               crash.

               This fix affects both the hipe compiler and erts
               runtime in an *incompatible* way. Old hipe compiled
               files need to be recompiled to load and run properly as
               native.


  OTP-14876    Application(s): erts
               Related Id(s): ERL-548

               Fix term_to_binary/2 spec for minor_version.


  OTP-14879    Application(s): erts

               Fix bug in erlang:binary_to_integer/2 where invalid
               characters were not detected for bases larger then 10.
               e.g. binary_to_integer(<<":">>, 16) would return 3 and
               not badarg as it should.


  OTP-14890    Application(s): erts

               Fixed bug in float_to_list/2 and float_to_binary/2 with
               option decimals that caused a faulty rounding up of the
               last decimal digit for about 6% of floats with a
               fraction part.

               For example, float_to_list(0.145, [{decimals,1}])
               returned "0.2" instead of "0.1".


  OTP-14891    Application(s): erts

               Fix bug causing slow hipe execution in modules loaded
               early during boot or loaded by code:atomic_load or
               code:finish_loading.


  OTP-14920    Application(s): erts

               Fixed a buffer overflow in an internal string
               formatting function that could be hit if specifying a
               long floating-point format specifier to erts_sprintf or
               similar.


  OTP-14921    Application(s): erts

               erlang:iolist_to_iovec/1 and enif_inspect_iovec will no
               longer fail when provided with binaries that have been
               matched-out on a non-byte boundary.


  OTP-14926    Application(s): erts

               iolist_to_binary/1 and erlang:iolist_to_iovec/1 will
               now badarg if supplied with a bitstring (without a
               list).


  OTP-14933    Application(s): erts, kernel
               Related Id(s): ERL-564, PR-1716

               Reject loading modules with names containing directory
               separators ('/' or '\' on Windows).


  OTP-14938    Application(s): erts

               Fix potential dead-lock when the tracer process dies
               while a the traced process is running on a dirty
               scheduler.


 --- Improvements and New Features ---

  OTP-14820    Application(s): erts, observer

               More crash dump info such as: process binary virtual
               heap stats, full info for process causing out-of-mem
               during GC, more port related info, and dirty scheduler
               info.


 Full runtime dependencies of erts-9.3: kernel-5.0, sasl-3.0.1,
 stdlib-3.0


 ---------------------------------------------------------------------
 --- hipe-3.17.1 -----------------------------------------------------
 ---------------------------------------------------------------------

 Note! The hipe-3.17.1 application can *not* be applied independently
       of other applications on an arbitrary OTP 20 installation.

       On a full OTP 20 installation, also the following runtime
       dependency has to be satisfied:
       -- erts-9.3 (first satisfied in OTP 20.3)


 --- Fixed Bugs and Malfunctions ---

  OTP-14850    Application(s): erts, hipe
               Related Id(s): PR-1664

               *** POTENTIAL INCOMPATIBILITY ***

               Fix HiPE bug for binary constructs like <<X/utf8>>
               which could in rare cases cause faulty results or VM
               crash.

               This fix affects both the hipe compiler and erts
               runtime in an *incompatible* way. Old hipe compiled
               files need to be recompiled to load and run properly as
               native.


  OTP-14886    Application(s): hipe

               The BEAM compiler chooses not to perform tailcall
               optimisations for some calls in tail position, for
               example to some built-in functions. However, when the
               ErLLVM HiPE backend is used, LLVM may choose to perform
               tailcall optimisation on these calls, breaking the
               expected semantics.

               To preserve the precise semantics exhibited by BEAM,
               the 'notail' marker, present in LLVM since version 3.8,
               is added to call instructions that BEAM has not turned
               into tail calls, which inhibits LLVM from performing
               tail-call optimisation in turn.


 Full runtime dependencies of hipe-3.17.1: compiler-5.0, erts-9.3,
 kernel-5.3, stdlib-3.4, syntax_tools-1.6.14


 ---------------------------------------------------------------------
 --- inets-6.5 -------------------------------------------------------
 ---------------------------------------------------------------------

 The inets-6.5 application can be applied independently of other
 applications on a full OTP 20 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-14908    Application(s): inets

               httpc_manager crashes when a long running request is
               sent on a persistent HTTP connection (keep-alive).
               Fixed httpc_manager to use proper timeouts on
               keep-alive connections.


 --- Improvements and New Features ---

  OTP-14854    Application(s): inets

               Add support for unix domain sockets in the http client.


 Full runtime dependencies of inets-6.5: erts-6.0, kernel-3.0,
 mnesia-4.12, runtime_tools-1.8.14, ssl-5.3.4, stdlib-2.0


 ---------------------------------------------------------------------
 --- kernel-5.4.3 ----------------------------------------------------
 ---------------------------------------------------------------------

 Note! The kernel-5.4.3 application can *not* be applied independently
       of other applications on an arbitrary OTP 20 installation.

       On a full OTP 20 installation, also the following runtime
       dependency has to be satisfied:
       -- erts-9.3 (first satisfied in OTP 20.3)


 --- Fixed Bugs and Malfunctions ---

  OTP-14889    Application(s): kernel, stdlib

               Correct a few contracts.


  OTP-14933    Application(s): erts, kernel
               Related Id(s): ERL-564, PR-1716

               Reject loading modules with names containing directory
               separators ('/' or '\' on Windows).


  OTP-14940    Application(s): kernel

               Fix bug in handling of os:cmd/2 option max_size on
               windows.


 Full runtime dependencies of kernel-5.4.3: erts-9.3, sasl-3.0,
 stdlib-3.4


 ---------------------------------------------------------------------
 --- observer-2.7 ----------------------------------------------------
 ---------------------------------------------------------------------

 The observer-2.7 application can be applied independently of other
 applications on a full OTP 20 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-14842    Application(s): observer
               Related Id(s): ERL-534

               etop.hrl used a relative path to include
               observer_backend.hrl, this is now changed to use
               include_lib instead. runtime_tools/include is added to
               the tertiary bootstrap.


  OTP-14846    Application(s): observer
               Related Id(s): ERL-537

               If a crashdump was truncated in the attributes section
               for a module, crashdump_viewer would crash when a
               module view was opened from the GUI. This bug was
               introduced in OTP-20.2 and is now corrected.


  OTP-14856    Application(s): observer
               Related Id(s): ERIERL-117

               Optimized ets and mnesia table view tab in observer
               gui, listing 10000 tables was previously very slow.


 --- Improvements and New Features ---

  OTP-14725    Application(s): observer

               When a process has many links and/or monitors, it could
               earlier take very long time to display the process
               information window. This is now improved by only
               showing a few links and monitors, and then an link
               named "more..." to expand the rest.


  OTP-14820    Application(s): erts, observer

               More crash dump info such as: process binary virtual
               heap stats, full info for process causing out-of-mem
               during GC, more port related info, and dirty scheduler
               info.


 Full runtime dependencies of observer-2.7: erts-7.0, et-1.5,
 inets-5.10, kernel-3.0, runtime_tools-1.8.14, stdlib-3.4, wx-1.2


 ---------------------------------------------------------------------
 --- runtime_tools-1.12.5 --------------------------------------------
 ---------------------------------------------------------------------

 The runtime_tools-1.12.5 application can be applied independently of
 other applications on a full OTP 20 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-14816    Application(s): runtime_tools

               system_information:to_file/1 will now use slightly less
               memory.


 Full runtime dependencies of runtime_tools-1.12.5: erts-8.0,
 kernel-5.0, mnesia-4.12, stdlib-3.0


 ---------------------------------------------------------------------
 --- snmp-5.2.10 -----------------------------------------------------
 ---------------------------------------------------------------------

 The snmp-5.2.10 application can be applied independently of other
 applications on a full OTP 20 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-14204    Application(s): snmp
               Related Id(s): PR-1726

               The example MIB EX1-MIB in the SNMP application has
               been corrected to match its example.


 Full runtime dependencies of snmp-5.2.10: crypto-3.3, erts-6.0,
 kernel-3.0, mnesia-4.12, runtime_tools-1.8.14, stdlib-2.5


 ---------------------------------------------------------------------
 --- ssh-4.6.6 -------------------------------------------------------
 ---------------------------------------------------------------------

 Note! The ssh-4.6.6 application can *not* be applied independently of
       other applications on an arbitrary OTP 20 installation.

       On a full OTP 20 installation, also the following runtime
       dependencies have to be satisfied:
       -- crypto-4.2 (first satisfied in OTP 20.2)
       -- public_key-1.5.2 (first satisfied in OTP 20.2)


 --- Fixed Bugs and Malfunctions ---

  OTP-14939    Application(s): ssh

               Remove a blocking risk when a channel is closed and an
               operation is tried on that channel after at least a
               second's time gap.


 --- Improvements and New Features ---

  OTP-14194    Application(s): ssh
               Related Id(s): OTP-12487

               Added ssh_compat_SUITE.

               This suite contains a number of interoperability tests
               mainly with OpenSSH. The tests start docker containers
               with different OpenSSH and OpenSSL/LibreSSLcryptolib
               versions and performs a number of tests of supported
               algorithms.

               All login methods and all user's public key types are
               tested both for the client and the server.

               All algorithms for kex, cipher, host key, mac and
               compressions are tested with a number of exec and sftp
               tests, both for the client and the server.


  OTP-14881    Application(s): ssh

               Default exec is disabled when a user-defined shell is
               enabled.


 Full runtime dependencies of ssh-4.6.6: crypto-4.2, erts-6.0,
 kernel-3.0, public_key-1.5.2, stdlib-3.3


 ---------------------------------------------------------------------
 --- ssl-8.2.4 -------------------------------------------------------
 ---------------------------------------------------------------------

 Note! The ssl-8.2.4 application can *not* be applied independently of
       other applications on an arbitrary OTP 20 installation.

       On a full OTP 20 installation, also the following runtime
       dependencies have to be satisfied:
       -- crypto-4.2 (first satisfied in OTP 20.2)
       -- public_key-1.5 (first satisfied in OTP 20.1)


 --- Fixed Bugs and Malfunctions ---

  OTP-14843    Application(s): ssl

               Optimization of bad merge conflict resolution causing
               dubble decode


  OTP-14852    Application(s): ssl

               Restore error propagation to OTP-19.3 behaviour, in
               OTP-20.2 implementation adjustments to gen_statem
               needed some further adjustments to avoid a race
               condition. This could cause a TLS server to not always
               report file path errors correctly.


  OTP-14871    Application(s): ssl

               Corrected RC4 suites listing function to regard TLS
               version


  OTP-14919    Application(s): ssl

               Fix alert handling so that unexpected messages are
               logged and alerted correctly


  OTP-14929    Application(s): ssl

               Fix alert handling so that unexpected messages are
               logged and alerted correctly


  OTP-14952    Application(s): ssl

               Correct handling of anonymous cipher suites


 --- Improvements and New Features ---

  OTP-14760    Application(s): ssl

               *** HIGHLIGHT ***

               Added new API functions to facilitate cipher suite
               handling


  OTP-14828    Application(s): ssl

               Correct TLS_FALLBACK_SCSV handling so that this special
               flag suite is always placed last in the cipher suite
               list in accordance with the specs. Also make sure this
               functionality is used in DTLS.


  OTP-14892    Application(s): ssl

               Add TLS record version sanity check for early as
               possible error detection and consistency in ALERT codes
               generated


 Full runtime dependencies of ssl-8.2.4: crypto-4.2, erts-7.0,
 inets-5.10.7, kernel-3.0, public_key-1.5, stdlib-3.2


 ---------------------------------------------------------------------
 --- stdlib-3.4.4 ----------------------------------------------------
 ---------------------------------------------------------------------

 The stdlib-3.4.4 application can be applied independently of other
 applications on a full OTP 20 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-14832    Application(s): stdlib
               Related Id(s): ERL-527

               Correct filelib:find_source() and filelib:find_file()
               to by default also search one level below src. This is
               in accordance with the Design Principles which states
               that an application can have Erlang source files one
               level below the src directory.


  OTP-14860    Application(s): stdlib
               Related Id(s): 1670, PR

               The contract of erl_tar:table/2 is corrected.


  OTP-14889    Application(s): kernel, stdlib

               Correct a few contracts.


  OTP-14942    Application(s): stdlib
               Related Id(s): PR-1702

               Fix string:prefix/2 to handle an empty string as second
               argument.


 Full runtime dependencies of stdlib-3.4.4: compiler-5.0, crypto-3.3,
 erts-9.0, kernel-5.0, sasl-3.0


 ---------------------------------------------------------------------
 --- tools-2.11.2 ----------------------------------------------------
 ---------------------------------------------------------------------

 Note! The tools-2.11.2 application can *not* be applied independently
       of other applications on an arbitrary OTP 20 installation.

       On a full OTP 20 installation, also the following runtime
       dependencies have to be satisfied:
       -- erts-9.1 (first satisfied in OTP 20.1)
       -- kernel-5.4 (first satisfied in OTP 20.1)


 --- Fixed Bugs and Malfunctions ---

  OTP-14817    Application(s): tools
               Related Id(s): 1641, PR

               A counting bug is corrected in Cover. The bug was
               introduced in Erlang/OTP 18.0.


  OTP-14912    Application(s): tools

               The lcnt server will no longer crash if
               lcnt:information/0 is called before lcnt:collect/0.


  OTP-14913    Application(s): tools

               lcnt:collect will now implicitly start the lcnt server,
               as per the documentation.


 --- Improvements and New Features ---

  OTP-14944    Application(s): tools

               Improved indentation in emacs and various other
               updates.


 Full runtime dependencies of tools-2.11.2: compiler-5.0, erts-9.1,
 kernel-5.4, runtime_tools-1.8.14, stdlib-3.4


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