path: root/release-notes/OTP-18.3.README.txt

Patch Package:           OTP 18.3
Git Tag:                 OTP-18.3
Date:                    2016-03-15
Trouble Report Id:       OTP-12272, OTP-12862, OTP-12955, OTP-12994,
                         OTP-13003, OTP-13057, OTP-13060, OTP-13103,
                         OTP-13164, OTP-13185, OTP-13200, OTP-13201,
                         OTP-13208, OTP-13216, OTP-13217, OTP-13218,
                         OTP-13219, OTP-13220, OTP-13222, OTP-13223,
                         OTP-13228, OTP-13230, OTP-13231, OTP-13232,
                         OTP-13234, OTP-13237, OTP-13238, OTP-13239,
                         OTP-13241, OTP-13242, OTP-13245, OTP-13249,
                         OTP-13250, OTP-13251, OTP-13253, OTP-13254,
                         OTP-13257, OTP-13264, OTP-13268, OTP-13269,
                         OTP-13270, OTP-13271, OTP-13272, OTP-13277,
                         OTP-13278, OTP-13279, OTP-13281, OTP-13282,
                         OTP-13284, OTP-13285, OTP-13286, OTP-13287,
                         OTP-13290, OTP-13291, OTP-13292, OTP-13298,
                         OTP-13299, OTP-13300, OTP-13301, OTP-13302,
                         OTP-13305, OTP-13306, OTP-13309, OTP-13311,
                         OTP-13312, OTP-13324, OTP-13326, OTP-13327,
                         OTP-13328, OTP-13334, OTP-13335, OTP-13336,
                         OTP-13338, OTP-13342, OTP-13363, OTP-13364,
                         OTP-13365, OTP-13376, OTP-13377, OTP-13378,
                         OTP-13379, OTP-13381, OTP-13386, OTP-13388,
                         OTP-13389, OTP-13391, OTP-13403, OTP-13404,
                         OTP-13406, OTP-9375
Seq num:                 seq12979, seq12991, seq13005, seq13053,
                         seq13069, seq13070
System:                  OTP
Release:                 18
Application:             asn1-4.0.2, common_test-1.12, compiler-6.0.3,
                         cosNotification-1.2.1, 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, eunit-2.2.13, hipe-3.15, inets-6.2,
                         kernel-4.2, mnesia-4.13.3, observer-2.1.2,
                         orber-3.8.1, public_key-1.1.1,
                         runtime_tools-1.9.3, sasl-2.7, snmp-5.2.2,
                         ssh-4.2.2, ssl-7.3, stdlib-2.8,
                         test_server-3.10, tools-2.8.3, webtool-0.9.1,
                         wx-1.6.1, xmerl-1.3.10
Predecessor:             OTP 18.2.4

 Check out the git tag OTP-18.3, 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-13363    Application(s): ssl

               Use application:ensure_all_started/2 instead of
               hard-coding dependencies


 ---------------------------------------------------------------------
 --- asn1-4.0.2 ------------------------------------------------------
 ---------------------------------------------------------------------

 The asn1-4.0.2 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13257    Application(s): asn1

               When compiling to the PER format, the ASN.1 compiler
               would crash when attempting to compile an ASN.1 module
               with a constrained INTEGER with more than 65536 values
               and named values. (Thanks to Ingars for reporting this
               bug.)


  OTP-13324    Application(s): asn1

               The ASN.1 compiler will now emit Dialyzer suppressions
               for improper lists. Thus, there is no longer any need
               to use --Wno_improper_lists when analyzing modules
               generated by the ASN.1 compiler.


 Full runtime dependencies of asn1-4.0.2: erts-7.0, kernel-3.0,
 stdlib-2.0


 ---------------------------------------------------------------------
 --- common_test-1.12 ------------------------------------------------
 ---------------------------------------------------------------------

 The common_test-1.12 application can be applied independently of
 other applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13003    Application(s): common_test
               Related Id(s): seq13005

               This update fixes the problem with generic printouts in
               the html log file not having special characters
               escaped. Printouts made with io:format/2 and ct:pal/2
               will now get special characters escaped automatically.
               Common Test will not attempt to escape characters
               printed with ct:log/2 since it is assumed that the user
               may want to print html tagged data using this function.
               A new function, ct:log/5, has been added, which offers
               optional escaping of characters. The latter function
               may also be used to print text to the log without
               headers and CSS class wrapping (analogue to
               io:format/2).


  OTP-13386    Application(s): common_test

               Commit 4cf832f1ad163f5b25dd8a6f2d314c169c23c82f
               erroneously removed logging of open and close of
               netconf connections. This is now corrected.


  OTP-13388    Application(s): common_test, test_server

               The directory to which nodes started with
               test_server:start_node/3 writes their erl_crash.dump is
               changed. The crashdumps were earlier written to the
               directory of test_server.beam, but in later versions of
               Microsoft Windows this is no longer writable (even for
               administrators). The framework (common_test) log
               directory is now used instead.


 --- Improvements and New Features ---

  OTP-13241    Application(s): common_test
               Related Id(s): seq12979

               This update makes it possible to specify multiple
               instances of the same group or test case in one test
               specification term in order to repeat execution.
               Example: {groups, "./", my_SUITE, [my_group, my_group],
               {cases, all}}, or {cases, "./", my_SUITE, [my_tc,
               my_tc, my_tc]}.


  OTP-13242    Application(s): common_test, test_server
               Related Id(s): seq12991

               Two new CT hook functions have been added:
               post_init_per_testcase/4 and pre_end_per_testcase/3.
               With these hook functions, it is possible to perform
               arbitrary actions (including modifications of test
               execution, test state and results) immediately before
               and after the execution of the test case.


  OTP-13338    Application(s): common_test
               Related Id(s): seq13053, seq13069

               The ct_netconfc was earlier very restrictive as to
               which SSH options the user could set. This is now
               changed, and any SSH option is now allowed. The netconf
               client will simply pass on any option, which it does
               not recognize, to SSH.


 Full runtime dependencies of common_test-1.12: 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-2.5, test_server-3.9, tools-2.8, xmerl-1.3.8


 ---------------------------------------------------------------------
 --- compiler-6.0.3 --------------------------------------------------
 ---------------------------------------------------------------------

 The compiler-6.0.3 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13208    Application(s): compiler

               An complicated guard expression in a function call
               could crash the compiler. (Thanks to Thomas Arts for
               reporting this bug.)


  OTP-13223    Application(s): compiler

               Constructing a map in a guard in a catch could crash
               the compiler. (Thanks to Thomas Arts for reporting this
               bug.)


  OTP-13231    Application(s): compiler

               Updating a fun as if it were a map would cause the
               compiler to crash. (Thanks to Thomas Arts for reporting
               this bug.)


  OTP-13238    Application(s): compiler, dialyzer, hipe

               Fix pretty printing of Core Maps

               Literal maps could cause Dialyzer to crash when pretty
               printing the results.


  OTP-13309    Application(s): compiler

               A complex combination of bit syntax matching operations
               would cause an internal consistency check failure
               during compilation. (Thanks to Jose Valim for reporting
               this bug.)


 Full runtime dependencies of compiler-6.0.3: crypto-3.6, erts-7.0,
 hipe-3.12, kernel-4.0, stdlib-2.5


 ---------------------------------------------------------------------
 --- cosNotification-1.2.1 -------------------------------------------
 ---------------------------------------------------------------------

 The cosNotification-1.2.1 application can be applied independently of
 other applications on a full OTP 18 installation.

 --- Improvements and New Features ---

  OTP-12862    Application(s): cosNotification, cosTime,
               cosTransactions, eunit, orber, xmerl

               Suppress Dialyzer warnings.


 Full runtime dependencies of cosNotification-1.2.1: cosEvent-2.1.15,
 cosTime-1.1.14, erts-7.0, kernel-3.0, orber-3.6.27, stdlib-2.5


 ---------------------------------------------------------------------
 --- cosTime-1.2.1 ---------------------------------------------------
 ---------------------------------------------------------------------

 The cosTime-1.2.1 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Improvements and New Features ---

  OTP-12862    Application(s): cosNotification, cosTime,
               cosTransactions, eunit, orber, xmerl

               Suppress Dialyzer warnings.


 Full runtime dependencies of cosTime-1.2.1: cosEvent-2.1.15,
 erts-7.0, kernel-3.0, orber-3.6.27, stdlib-2.0


 ---------------------------------------------------------------------
 --- cosTransactions-1.3.1 -------------------------------------------
 ---------------------------------------------------------------------

 The cosTransactions-1.3.1 application can be applied independently of
 other applications on a full OTP 18 installation.

 --- Improvements and New Features ---

  OTP-12862    Application(s): cosNotification, cosTime,
               cosTransactions, eunit, orber, xmerl

               Suppress Dialyzer warnings.


 Full runtime dependencies of cosTransactions-1.3.1: erts-7.0,
 kernel-3.0, orber-3.6.27, stdlib-2.0


 ---------------------------------------------------------------------
 --- crypto-3.6.3 ----------------------------------------------------
 ---------------------------------------------------------------------

 The crypto-3.6.3 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13249    Application(s): crypto

               Fix bug for aes_ecb block crypto when data is larger
               than 16 bytes.


  OTP-13311    Application(s): crypto, ssl

               Improve portability of ECC tests in Crypto and SSL for
               "exotic" OpenSSL versions.


 Full runtime dependencies of crypto-3.6.3: erts-6.0, kernel-3.0,
 stdlib-2.0


 ---------------------------------------------------------------------
 --- debugger-4.1.2 --------------------------------------------------
 ---------------------------------------------------------------------

 The debugger-4.1.2 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Improvements and New Features ---

  OTP-12994    Application(s): debugger, observer

               Documentation corrections.


 Full runtime dependencies of debugger-4.1.2: compiler-5.0, erts-6.0,
 kernel-3.0, stdlib-2.5, wx-1.2


 ---------------------------------------------------------------------
 --- dialyzer-2.9 ----------------------------------------------------
 ---------------------------------------------------------------------

 Note! The dialyzer-2.9 application can *not* be applied independently
       of other applications on an arbitrary OTP 18 installation.

       On a full OTP 18 installation, also the following runtime
       dependency has to be satisfied:
       -- hipe-3.13 (first satisfied in OTP 18.1)


 --- Fixed Bugs and Malfunctions ---

  OTP-13103    Application(s): dialyzer
               Related Id(s): ERL-40

               Dialyzer no longer asserts that files and directories
               to be removed from a PLT exist.


  OTP-13237    Application(s): dialyzer

               Fix a bug concerning parameterized opaque types.


  OTP-13238    Application(s): compiler, dialyzer, hipe

               Fix pretty printing of Core Maps

               Literal maps could cause Dialyzer to crash when pretty
               printing the results.


  OTP-13287    Application(s): dialyzer

               If a behavior module contains an non-exported function
               with the same name as one of the behavior's callbacks,
               the callback info was inadvertently deleted from the
               PLT as the dialyzer_plt:delete_list/2 function was
               cleaning up the callback table.


  OTP-13312    Application(s): dialyzer

               Correct the contract for erlang:byte_size/1

               Correct the handling of comparison operators for map
               and bit string operands.


 --- Improvements and New Features ---

  OTP-13217    Application(s): dialyzer

               Dialyzer recognizes calls to M:F/A where M, F, and A
               are all literals.


 Full runtime dependencies of dialyzer-2.9: compiler-5.0, erts-7.0,
 hipe-3.13, kernel-3.0, stdlib-2.5, syntax_tools-1.6.14, wx-1.2


 ---------------------------------------------------------------------
 --- diameter-1.11.2 -------------------------------------------------
 ---------------------------------------------------------------------

 The diameter-1.11.2 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13164    Application(s): diameter

               Make peer handling more efficient.

               Inefficient lookup and manipulation of peer lists could
               result in poor performance when many outgoing requests
               were sent simultaneously, or when many peers connected
               simultaneously. Filtering peer lists on realm/host is
               now also more efficient in many cases.


  OTP-13342    Application(s): diameter

               Fix handling of shared peer connections in watchdog
               state SUSPECT.

               A peer connection shared from a remote node was
               regarded as being up for the lifetime of the
               connection, ignoring watchdog transitions into state
               SUSPECT.


 Full runtime dependencies of diameter-1.11.2: erts-6.0, kernel-3.0,
 ssl-5.3.4, stdlib-2.0


 ---------------------------------------------------------------------
 --- edoc-0.7.18 -----------------------------------------------------
 ---------------------------------------------------------------------

 The edoc-0.7.18 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13234    Application(s): edoc
               Related Id(s): ERL-63

               Assign correct names to list arguments.


 --- Improvements and New Features ---

  OTP-13302    Application(s): edoc

               Unless the sort_functions option is true, edoc_layout
               does not sort functions.


 Full runtime dependencies of edoc-0.7.18: erts-6.0, inets-5.10,
 kernel-3.0, stdlib-2.5, syntax_tools-1.6.14, xmerl-1.3.7


 ---------------------------------------------------------------------
 --- eldap-1.2.1 -----------------------------------------------------
 ---------------------------------------------------------------------

 The eldap-1.2.1 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13327    Application(s): eldap

               ELDAP did not send an 'unBind' request before closing
               the connection.


 --- Improvements and New Features ---

  OTP-12272    Application(s): eldap

               Handles the referral result code from LDAP servers.
               Adds the return value {ok, {referral,UrlList}} to some
               functions. See the Eldap reference manual for details.


 Full runtime dependencies of eldap-1.2.1: asn1-3.0, erts-6.0,
 kernel-3.0, ssl-5.3.4, stdlib-2.0


 ---------------------------------------------------------------------
 --- erl_docgen-0.4.2 ------------------------------------------------
 ---------------------------------------------------------------------

 The erl_docgen-0.4.2 application can be applied independently of
 other applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-12955    Application(s): erl_docgen

               Correctly generate anno tags for maps keys


 Full runtime dependencies of erl_docgen-0.4.2: edoc-0.7.13, erts-6.0,
 stdlib-2.5, xmerl-1.3.7


 ---------------------------------------------------------------------
 --- erl_interface-3.8.2 ---------------------------------------------
 ---------------------------------------------------------------------

 The erl_interface-3.8.2 application can be applied independently of
 other applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13328    Application(s): erl_interface

               Fix Erl_Interface build error on Debian/Hurd and
               Debian/kFreeBSD. (Thanks to Sergei Golovan)


 --- Improvements and New Features ---

  OTP-13364    Application(s): erl_interface, kernel, wx

               EPMD supports both IPv4 and IPv6

               Also affects oldest supported windows version.


 ---------------------------------------------------------------------
 --- erts-7.3 --------------------------------------------------------
 ---------------------------------------------------------------------

 The erts-7.3 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13060    Application(s): erts

               The '-path' flag to 'erl' has been documented. This
               flag replaces the path specified in the boot script. It
               has always existed, but was earlier only documented in
               SASL (script).


  OTP-13216    Application(s): erts

               The call_time tracing functionality internally used a
               time based on OS system time in order to measure call
               time which could cause erroneous results if OS system
               time was changed during tracing.

               This functionality now use Erlang monotonic time in
               order to measure time. Besides fixing the erroneous
               results due to OS system time being used, the results
               are often also better since Erlang monotonic time often
               has better accuracy and precision.


  OTP-13220    Application(s): erts

               Fix behaviour of -delay_write command line switch of
               epmd, which is used for debugging - in some cases epmd
               was sleeping twice the requested amount of time.


  OTP-13245    Application(s): erts

               Fix race between timeout and exit signal that could
               cause a process to ignore the exit signal and continue
               execution. Bug exist since OTP 18.0.


  OTP-13251    Application(s): erts
               Related Id(s): ERL-49

               Fix bug in erlang:halt/1,2 for large exit status
               values, causing either badarg (on 32-bit) or exit with
               a crash dump and/or core dump (on 64-bit). Make
               erlang:halt/1,2 tolerate any non negative integer as
               exit status and truncate high order bits if the OS does
               not support it.


  OTP-13254    Application(s): erts, kernel
               Related Id(s): OTP-11997, OTP-13222

               gen_tcp:accept/2 was not time warp safe. This since it
               used the same time as returned by erlang:now/0 when
               calculating timeout. This has now been fixed.


  OTP-13270    Application(s): erts

               Fix faulty error handling when writing to a compressed
               file.


  OTP-13271    Application(s): erts

               Fix sendfile usage for large files on FreeBSD


  OTP-13282    Application(s): erts
               Related Id(s): ERL-79

               Fix bug that could cause
               process_info(P,current_location) to crash emulator for
               hipe compiled modules.


  OTP-13292    Application(s): erts

               Out of memory errors have been changed to cause an exit
               instead of abort.


  OTP-13298    Application(s): erts
               Related Id(s): OTP-11388

               When calling garbage_collect/[1,2] or
               check_process_code/[2,3] from a process with a higher
               priority than the priority of the process operated on,
               the run queues could end up in an inconsistent state.
               This bug has now been fixed.


  OTP-13326    Application(s): erts
               Related Id(s): ERL-80

               A workaround for an issue with older gcc versions (less
               than 5) and inline assembly on 32-bit x86 caused an
               emulator crash when it had been compiled with a newer
               gcc version. An improved configure test, run when
               building OTP, now detects whether the workaround should
               be used or not.


 --- Improvements and New Features ---

  OTP-13201    Application(s): erts

               Introduced new statistics functionality in order to
               more efficiently retrieve information about run able
               and active processes and ports. For more information
               see:

               -- statistics(total_run_queue_lengths)

               -- statistics(run_queue_lengths)

               -- statistics(total_active_tasks)

               -- statistics(active_tasks)


  OTP-13222    Application(s): erts, kernel, stdlib
               Related Id(s): OTP-11997

               Time warp safety improvements.

               Introduced the options monotonic_timestamp, and
               strict_monotonic_timestamp to the trace, sequential
               trace, and system profile functionality. This since the
               already existing timestamp option is not time warp
               safe.

               Introduced the option safe_fixed_monotonic_time to
               ets:info/2 and dets:info/2. This since the already
               existing safe_fixed option is not time warp safe.


  OTP-13301    Application(s): erts

               Fix a register race where down nodes goes undetected in
               epmd


  OTP-13336    Application(s): erts

               Improved the gcc inline assembly implementing double
               word atomic compare and exchange on x86/x86_64 so that
               it also can be used when compiling with clang.


  OTP-13365    Application(s): erts
               Related Id(s): OTP-9892

               An optimization preventing a long wait for a scheduler
               thread looking up information about a process executing
               on another scheduler thread had unintentionally been
               lost in erts-5.10 (OTP R16A). This optimization has now
               been reintroduced.


 Full runtime dependencies of erts-7.3: kernel-4.0, sasl-2.4,
 stdlib-2.5


 ---------------------------------------------------------------------
 --- eunit-2.2.13 ----------------------------------------------------
 ---------------------------------------------------------------------

 The eunit-2.2.13 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Improvements and New Features ---

  OTP-12862    Application(s): cosNotification, cosTime,
               cosTransactions, eunit, orber, xmerl

               Suppress Dialyzer warnings.


 Full runtime dependencies of eunit-2.2.13: erts-6.0, kernel-3.0,
 stdlib-2.5


 ---------------------------------------------------------------------
 --- hipe-3.15 -------------------------------------------------------
 ---------------------------------------------------------------------

 Note! The hipe-3.15 application can *not* be applied independently of
       other applications on an arbitrary OTP 18 installation.

       On a full OTP 18 installation, also the following runtime
       dependency has to be satisfied:
       -- erts-7.1 (first satisfied in OTP 18.1)


 --- Fixed Bugs and Malfunctions ---

  OTP-13238    Application(s): compiler, dialyzer, hipe

               Fix pretty printing of Core Maps

               Literal maps could cause Dialyzer to crash when pretty
               printing the results.


  OTP-13379    Application(s): hipe

               Dialyzer warnings removed.


 --- Improvements and New Features ---

  OTP-13269    Application(s): hipe

               Fix HiPE ErLLVM code generation for pattern matching
               with UTF binaries.


  OTP-13272    Application(s): hipe

               Fix various binary construction inconsistencies for
               hipe compiled code.

               -- Passing bad field sizes to binary constructions
               would throw badarith rather than badarg. Worse, in
               guards, when the unit size of the field was 1, the
               exception would leak rather than failing the function
               clause match.

               -- Passing bignums as field sizes to binary
               constructions would always fail (and always with
               badarg).

               -- A bug in bs_init_bits that cased binary
               constructions to fail with system_limit if they were at
               least 1/8th of the actual limit.

               -- Compiler crashes when matches against an integer
               literal whose size fits an unsigned word, but not a
               signed word or matches against an integer literal that
               whose size is larger than the largest allowed bignum.

               -- Very large binary constructions that should fail
               with system_limit could instead fail with badarg or
               even succeed with a faulty result.

               -- Add missing check for unit size match when inserting
               a binary. For example, a faulty expression like
               >/binary>> would succeed.


 Full runtime dependencies of hipe-3.15: compiler-5.0, erts-7.1,
 kernel-3.0, stdlib-2.5, syntax_tools-1.6.14


 ---------------------------------------------------------------------
 --- inets-6.2 -------------------------------------------------------
 ---------------------------------------------------------------------

 The inets-6.2 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13403    Application(s): inets

               The TFTP client/server has been fixed to allow file
               sizes larger than 32MB block by allowing the 16 bit
               block counter to wrap. Since this is a commonly
               accepted behavior we regard it as a bug fix.


 --- Improvements and New Features ---

  OTP-13286    Application(s): inets

               Handle HTTP PATCH method in client.


  OTP-13389    Application(s): inets

               Expected termination should not be logged as an
               application error.


 Full runtime dependencies of inets-6.2: erts-6.0, kernel-3.0,
 mnesia-4.12, runtime_tools-1.8.14, ssl-5.3.4, stdlib-2.0


 ---------------------------------------------------------------------
 --- kernel-4.2 ------------------------------------------------------
 ---------------------------------------------------------------------

 Note! The kernel-4.2 application can *not* be applied independently
       of other applications on an arbitrary OTP 18 installation.

       On a full OTP 18 installation, also the following runtime
       dependencies have to be satisfied:
       -- erts-7.3 (first satisfied in OTP 18.3)
       -- sasl-2.6 (first satisfied in OTP 18.1)
       -- stdlib-2.6 (first satisfied in OTP 18.1)


 --- Fixed Bugs and Malfunctions ---

  OTP-13254    Application(s): erts, kernel
               Related Id(s): OTP-11997, OTP-13222

               gen_tcp:accept/2 was not time warp safe. This since it
               used the same time as returned by erlang:now/0 when
               calculating timeout. This has now been fixed.


  OTP-13335    Application(s): kernel
               Related Id(s): ERL-95

               Correct the contract for inet:getifaddrs/1.


  OTP-9375     Application(s): kernel

               code:load_abs([10100]) would bring down the entire
               runtime system and create a crash dump. Corrected to
               generate an error exception in the calling process.

               Also corrected specs for code loading functions and
               added more information in the documentation about the
               error reasons returned by code-loading functions.


 --- Improvements and New Features ---

  OTP-13222    Application(s): erts, kernel, stdlib
               Related Id(s): OTP-11997

               Time warp safety improvements.

               Introduced the options monotonic_timestamp, and
               strict_monotonic_timestamp to the trace, sequential
               trace, and system profile functionality. This since the
               already existing timestamp option is not time warp
               safe.

               Introduced the option safe_fixed_monotonic_time to
               ets:info/2 and dets:info/2. This since the already
               existing safe_fixed option is not time warp safe.


  OTP-13250    Application(s): kernel

               Add validation callback for heart

               The erlang heart process may now have a validation
               callback installed. The validation callback will be
               executed, if present, before any heartbeat to heart
               port program. If the validation fails, or stalls, no
               heartbeat will be sent and the node will go down.

               With the option 'check_schedulers' heart executes a
               responsiveness check of the schedulers before a
               heartbeat is sent to the port program. If the
               responsiveness check fails, the heartbeat will not be
               performed (as intended).


  OTP-13299    Application(s): kernel

               Clarify documentation of net_kernel:allow/1


  OTP-13364    Application(s): erl_interface, kernel, wx

               EPMD supports both IPv4 and IPv6

               Also affects oldest supported windows version.


 Full runtime dependencies of kernel-4.2: erts-7.3, sasl-2.6,
 stdlib-2.6


 ---------------------------------------------------------------------
 --- mnesia-4.13.3 ---------------------------------------------------
 ---------------------------------------------------------------------

 The mnesia-4.13.3 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13284    Application(s): mnesia

               Avoid deadlock possibility in mnesia:del_table_copy/2


 Full runtime dependencies of mnesia-4.13.3: erts-7.0, kernel-3.0,
 stdlib-2.0


 ---------------------------------------------------------------------
 --- observer-2.1.2 --------------------------------------------------
 ---------------------------------------------------------------------

 The observer-2.1.2 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Improvements and New Features ---

  OTP-12994    Application(s): debugger, observer

               Documentation corrections.


 Full runtime dependencies of observer-2.1.2: erts-7.0, et-1.5,
 inets-5.10, kernel-3.0, runtime_tools-1.8.14, stdlib-2.0, wx-1.2


 ---------------------------------------------------------------------
 --- orber-3.8.1 -----------------------------------------------------
 ---------------------------------------------------------------------

 The orber-3.8.1 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Improvements and New Features ---

  OTP-12862    Application(s): cosNotification, cosTime,
               cosTransactions, eunit, orber, xmerl

               Suppress Dialyzer warnings.


 Full runtime dependencies of orber-3.8.1: erts-7.0, inets-5.10,
 kernel-3.0, mnesia-4.12, ssl-5.3.4, stdlib-2.5


 ---------------------------------------------------------------------
 --- public_key-1.1.1 ------------------------------------------------
 ---------------------------------------------------------------------

 The public_key-1.1.1 application can be applied independently of
 other applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13381    Application(s): public_key
               Related Id(s): seq13070

               An encapsulated PEM header shall be followed by a blank
               line


 Full runtime dependencies of public_key-1.1.1: asn1-3.0, crypto-3.3,
 erts-6.0, kernel-3.0, stdlib-2.0


 ---------------------------------------------------------------------
 --- runtime_tools-1.9.3 ---------------------------------------------
 ---------------------------------------------------------------------

 The runtime_tools-1.9.3 application can be applied independently of
 other applications on a full OTP 18 installation.

 --- Improvements and New Features ---

  OTP-13279    Application(s): runtime_tools

               dbg:trace_client() now uses a read buffer to speed up
               reading of trace files.


 Full runtime dependencies of runtime_tools-1.9.3: erts-7.0,
 kernel-3.0, mnesia-4.12, stdlib-2.0


 ---------------------------------------------------------------------
 --- sasl-2.7 --------------------------------------------------------
 ---------------------------------------------------------------------

 Note! The sasl-2.7 application can *not* be applied independently of
       other applications on an arbitrary OTP 18 installation.

       On a full OTP 18 installation, also the following runtime
       dependencies have to be satisfied:
       -- kernel-4.1 (first satisfied in OTP 18.1)
       -- stdlib-2.8 (first satisfied in OTP 18.3)


 --- Fixed Bugs and Malfunctions ---

  OTP-13291    Application(s): sasl

               During upgrade, the release_handler collects a list of
               supervisor pids in order to list all processes in the
               supervisor tree. If one of the supervisors
               (legitimately) exits before release_handler can examine
               it, then sys:get_status/1 would earlier be called with
               a dead pid, causing a 'noproc' error. This has been
               corrected.


 --- Improvements and New Features ---

  OTP-13057    Application(s): sasl

               The module overload is deprecated and will be removed
               in OTP 19.


  OTP-13290    Application(s): sasl, stdlib

               Improve implementation of supervisor child count,
               making it faster and more accurate for dynamic
               processes of a simple_one_for_one supervisor.


 Full runtime dependencies of sasl-2.7: erts-6.0, kernel-4.1,
 stdlib-2.8, tools-2.6.14


 ---------------------------------------------------------------------
 --- snmp-5.2.2 ------------------------------------------------------
 ---------------------------------------------------------------------

 The snmp-5.2.2 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13264    Application(s): snmp

               Snmp agent now properly handles vacmViewTreeFamily
               masks.


 Full runtime dependencies of snmp-5.2.2: crypto-3.3, erts-6.0,
 kernel-3.0, mnesia-4.12, runtime_tools-1.8.14, stdlib-2.5


 ---------------------------------------------------------------------
 --- ssh-4.2.2 -------------------------------------------------------
 ---------------------------------------------------------------------

 The ssh-4.2.2 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13305    Application(s): ssh
               Related Id(s): ERL-87

               Documentation correction of ssh_sftp:position/4

               Thanks to Rabbe Fogelholm.


 Full runtime dependencies of ssh-4.2.2: crypto-3.3, erts-6.0,
 kernel-3.0, public_key-0.22, stdlib-2.3


 ---------------------------------------------------------------------
 --- ssl-7.3 ---------------------------------------------------------
 ---------------------------------------------------------------------

 The ssl-7.3 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13185    Application(s): ssl

               Make sure there is only one poller validator at a time
               for validating the session cache.


  OTP-13253    Application(s): ssl

               A timing related issue could cause ssl to hang,
               especially happened with newer versions of OpenSSL in
               combination with ECC ciphers.


  OTP-13268    Application(s): ssl

               Work around a race condition in the TLS distribution
               start.


  OTP-13306    Application(s): ssl

               Big handshake messages are now correctly fragmented in
               the TLS record layer.


  OTP-13311    Application(s): crypto, ssl

               Improve portability of ECC tests in Crypto and SSL for
               "exotic" OpenSSL versions.


  OTP-13377    Application(s): ssl

               Certificate extensions marked as critical are ignored
               when using verify_none


  OTP-13378    Application(s): ssl

               If a certificate doesn't contain a CRL Distribution
               Points extension, and the relevant CRL is not in the
               cache, and the crl_check option is not set to
               best_effort , the revocation check should fail.


  OTP-13391    Application(s): ssl

               Enable TLS distribution over IPv6


 --- Improvements and New Features ---

  OTP-13219    Application(s): ssl

               Improve error reporting for TLS distribution


  OTP-13232    Application(s): ssl

               Include options from connect, listen and accept in
               connection_information/1,2


  OTP-13285    Application(s): ssl

               Allow adding extra options for outgoing TLS
               distribution connections, as supported for plain TCP
               connections.


  OTP-13300    Application(s): ssl

               Use loopback as server option in TLS-distribution
               module


  OTP-13334    Application(s): ssl

               Verify certificate signature against original
               certificate binary.

               This avoids bugs due to encoding errors when
               re-encoding a decode certificate. As there exists
               several decode step and using of different ASN.1
               specification this is a risk worth avoiding.


  OTP-13363    Application(s): ssl

               *** HIGHLIGHT ***

               Use application:ensure_all_started/2 instead of
               hard-coding dependencies


 Full runtime dependencies of ssl-7.3: crypto-3.3, erts-7.0,
 inets-5.10.7, kernel-3.0, public_key-1.0, stdlib-2.0


 ---------------------------------------------------------------------
 --- stdlib-2.8 ------------------------------------------------------
 ---------------------------------------------------------------------

 Note! The stdlib-2.8 application can *not* be applied independently
       of other applications on an arbitrary OTP 18 installation.

       On a full OTP 18 installation, also the following runtime
       dependencies have to be satisfied:
       -- erts-7.3 (first satisfied in OTP 18.3)
       -- kernel-4.1 (first satisfied in OTP 18.1)
       -- sasl-2.6 (first satisfied in OTP 18.1)


 --- Fixed Bugs and Malfunctions ---

  OTP-13218    Application(s): stdlib

               Fix evaluation in matching of bound map key variables
               in the interpreter.

               Prior to this patch, the following code would not
               evaluate: X = key,(fun(#{X := value}) -> true end)(#{X
               => value})


  OTP-13228    Application(s): stdlib
               Related Id(s): ERL-32

               Fix erl_eval not using non-local function handler.


  OTP-13230    Application(s): stdlib
               Related Id(s): ERL-62

               The Erlang Code Linter no longer crashes if there is a
               -deprecated() attribute but no -module() declaration.


  OTP-13239    Application(s): stdlib
               Related Id(s): OTP-11997

               The timestamp in the result returned by dets:info(Tab,
               safe_fixed) was unintentionally broken as a result of
               the time API rewrites in OTP 18.0. This has now been
               fixed.


  OTP-13278    Application(s): stdlib

               A rare race condition in beam_lib when using encrypted
               abstract format has been eliminated.


  OTP-13376    Application(s): stdlib

               Improved maps:with/2 and maps:without/2 algorithms

               The new implementation speeds up the execution
               significantly for all sizes of input.


 --- Improvements and New Features ---

  OTP-13222    Application(s): erts, kernel, stdlib
               Related Id(s): OTP-11997

               Time warp safety improvements.

               Introduced the options monotonic_timestamp, and
               strict_monotonic_timestamp to the trace, sequential
               trace, and system profile functionality. This since the
               already existing timestamp option is not time warp
               safe.

               Introduced the option safe_fixed_monotonic_time to
               ets:info/2 and dets:info/2. This since the already
               existing safe_fixed option is not time warp safe.


  OTP-13281    Application(s): stdlib

               In the shell Ctrl+W (delete word) will no longer
               consider "." as being part of a word.


 Full runtime dependencies of stdlib-2.8: compiler-5.0, crypto-3.3,
 erts-7.3, kernel-4.1, sasl-2.6


 ---------------------------------------------------------------------
 --- test_server-3.10 ------------------------------------------------
 ---------------------------------------------------------------------

 The test_server-3.10 application can be applied independently of
 other applications on a full OTP 18 installation.

 --- Improvements and New Features ---

  OTP-13242    Application(s): common_test, test_server
               Related Id(s): seq12991

               Two new CT hook functions have been added:
               post_init_per_testcase/4 and pre_end_per_testcase/3.
               With these hook functions, it is possible to perform
               arbitrary actions (including modifications of test
               execution, test state and results) immediately before
               and after the execution of the test case.


 Full runtime dependencies of test_server-3.10: erts-7.0, inets-6.0,
 kernel-4.0, observer-2.1, runtime_tools-1.8.16, stdlib-2.5,
 syntax_tools-1.7, tools-2.8


 ---------------------------------------------------------------------
 --- tools-2.8.3 -----------------------------------------------------
 ---------------------------------------------------------------------

 The tools-2.8.3 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13200    Application(s): tools

               cover:compile_beam/1 and
               cover:compile_beam_directory/1,2 crashed when trying to
               compile a beam file without a 'file' attribute. This
               has been corrected and an error is returned instead.

               Thanks to Louis-Philippe Gauthier for reporting this
               bug.


  OTP-13277    Application(s): tools
               Related Id(s): 856, PR

               Fix a bit string comprehension bug in Cover.


 Full runtime dependencies of tools-2.8.3: compiler-5.0, erts-7.0,
 inets-5.10, kernel-3.0, runtime_tools-1.8.14, stdlib-2.5,
 webtool-0.8.10


 ---------------------------------------------------------------------
 --- webtool-0.9.1 ---------------------------------------------------
 ---------------------------------------------------------------------

 The webtool-0.9.1 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13406    Application(s): webtool

               Remove dependency to inets mod_include in
               configuration.


 Full runtime dependencies of webtool-0.9.1: erts-6.0, inets-5.10,
 kernel-3.0, observer-2.0, stdlib-2.0


 ---------------------------------------------------------------------
 --- wx-1.6.1 --------------------------------------------------------
 ---------------------------------------------------------------------

 The wx-1.6.1 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-13404    Application(s): wx

               Fixed commands with multiple binaries, such as
               wxImage:new/4. Added wxWindow:SetDoubleBuffered/1,
               wxWindow:isDoubleBuffered/1, wxWindow:setTransparent/2
               and wxWindow:canSetTransparent/1. Fixed timing issues.


 Full runtime dependencies of wx-1.6.1: erts-6.0, kernel-3.0,
 stdlib-2.0


 ---------------------------------------------------------------------
 --- xmerl-1.3.10 ----------------------------------------------------
 ---------------------------------------------------------------------

 The xmerl-1.3.10 application can be applied independently of other
 applications on a full OTP 18 installation.

 --- Improvements and New Features ---

  OTP-12862    Application(s): cosNotification, cosTime,
               cosTransactions, eunit, orber, xmerl

               Suppress Dialyzer warnings.


 Full runtime dependencies of xmerl-1.3.10: erts-6.0, kernel-3.0,
 stdlib-2.5


 ---------------------------------------------------------------------
 --- Thanks to -------------------------------------------------------
 ---------------------------------------------------------------------

 Alex Wilson, Alexey Lebedeff, Andrew Bennett, Ben Wilson, Bernard
 Duggan, Dániel Szoboszlay, Hamidreza Soleimani, JP, José Valim,
 Kostis Sagonas, Luca Favatella, Luis Rascao, Magnus Henoch,
 Magnus Lång, Matt Campbell, Michael Santos, Mikael Pettersson,
 Pablo Lamela, Pavel Abalihin, Péter Gömöri, Prayag Verma, 
 Richard Jones, Rory Byrne, Stavros Aronis, Steve Vinoski,
 Tuncer Ayaz, tmanevik, xsipewe


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