[erlang-questions] Patch Package OTP 21.2.4 Released

[Erlang/OTP]

Patch Package:           OTP 21.2.4
Git Tag:                 OTP-21.2.4
Date:                    2019-01-25
Trouble Report Id:       OTP-15536, OTP-15537, OTP-15538, OTP-15544
Seq num:                 ERIERL-229, ERIERL-289, ERL-827
System:                  OTP
Release:                 21
Application:             erts-10.2.3, inets-7.0.4
Predecessor:             OTP 21.2.3

 Check out the git tag OTP-21.2.4, 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.

 ---------------------------------------------------------------------
 --- erts-10.2.3 -----------------------------------------------------
 ---------------------------------------------------------------------

 Note! The erts-10.2.3 application can *not* be applied independently
       of other applications on an arbitrary OTP 21 installation.

       On a full OTP 21 installation, also the following runtime
       dependencies have to be satisfied:
       -- kernel-6.1 (first satisfied in OTP 21.1)
       -- sasl-3.3 (first satisfied in OTP 21.2)


 --- Fixed Bugs and Malfunctions ---

  OTP-15536    Application(s): erts
               Related Id(s): ERL-827

               Fix bug where doing a gen_tcp:send on a socket with
               delay_send set to true could cause a segfault if the
               other side closes the connection.

               Bug was introduced in erts-10.2 (OTP-21.2).


  OTP-15537    Application(s): erts

               Fix a race condition when a port program closes that
               could result in the next started port to hang during
               startup.

               When this fault happens the following error is normally
               (but not always) logged:

               =ERROR REPORT==== 14-Jan-2019::10:45:52.868246 ===
               Bad input fd in erts_poll()! fd=11, port=#Port<0.505>,
               driver=spawn, name=/bin/sh -s unix:cmd

               Bug was introduced in erts-10.0 (OTP-21.0).


  OTP-15538    Application(s): erts
               Related Id(s): ERIERL-229

               Fix a bug where polling for external events could be
               delayed for a very long time if all active schedulers
               were 100% loaded.

               Bug was introduced in erts-10.2 (OTP-21.2).


 Full runtime dependencies of erts-10.2.3: kernel-6.1, sasl-3.3,
 stdlib-3.5


 ---------------------------------------------------------------------
 --- inets-7.0.4 -----------------------------------------------------
 ---------------------------------------------------------------------

 The inets-7.0.4 application can be applied independently of other
 applications on a full OTP 21 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-15544    Application(s): inets
               Related Id(s): ERIERL-289

               Make sure ipv6 addresses with brackets in URIs are
               converted correctly before passing to lower level
               functions like gen_tcp and ssl functions. Could cause
               connection to fail.


 Full runtime dependencies of inets-7.0.4: erts-6.0, kernel-3.0,
 mnesia-4.12, runtime_tools-1.8.14, ssl-5.3.4, stdlib-3.5


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