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</header>
<p>This document describes the changes made to the STDLIB application.</p>
+<section><title>STDLIB 1.18.1</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ References to <c>is_constant/1</c> (which was removed in
+ the R12 release) has been removed from documentation and
+ code.</p>
+ <p>
+ Own Id: OTP-6454 Aux Id: seq10407 </p>
+ </item>
+ <item>
+ <p>
+ Leave control back to gen_server during supervisor's
+ restart loop</p>
+ <p>
+ When an attempt to restart a child failed, supervisor
+ would earlier keep the execution flow and try to restart
+ the child over and over again until it either succeeded
+ or the restart frequency limit was reached. If none of
+ these happened, supervisor would hang forever in this
+ loop.</p>
+ <p>
+ This commit adds a timer of 0 ms where the control is
+ left back to the gen_server which implements the
+ supervisor. This way any incoming request to the
+ supervisor will be handled - which could help breaking
+ the infinite loop - e.g. shutdown request for the
+ supervisor or for the problematic child.</p>
+ <p>
+ This introduces some incompatibilities in stdlib due to
+ new return values from supervisor: <list>
+ <item>restart_child/2 can now return
+ {error,restarting}</item> <item>delete_child/2 can now
+ return {error,restarting}</item> <item>which_children/1
+ returns a list of {Id,Child,Type,Mods}, where Child, in
+ addition to the old pid() or 'undefined', now also can be
+ 'restarting'.</item> </list></p>
+ <p>
+ *** POTENTIAL INCOMPATIBILITY ***</p>
+ <p>
+ Own Id: OTP-9549</p>
+ </item>
+ <item>
+ <p>
+ If a temporary child's start function returned 'ignore',
+ then the supervisor would keep it's child specification.
+ This has been corrected. Child specifications for
+ non-existing temporary children shall never be kept.</p>
+ <p>
+ Own Id: OTP-9782 Aux Id: seq11964 </p>
+ </item>
+ <item>
+ <p> Use universal time as base in error logger
+ <p>
+ Previous conversion used the deprecated
+ calendar:local_time_to_universal_time/1 </p></p>
+ <p>
+ Own Id: OTP-9854</p>
+ </item>
+ <item>
+ <p>Calling a guard test (such as is_list/1) from the
+ top-level in a guard, would cause a compiler crash if
+ there was a local definition with the same name.
+ Corrected to reject the program with an error
+ message.</p>
+ <p>
+ Own Id: OTP-9866</p>
+ </item>
+ <item>
+ <p>
+ Fix the type spec from the doc of binary:part/3 (Thanks
+ to Ricardo Catalinas Jim�nez)</p>
+ <p>
+ Own Id: OTP-9920</p>
+ </item>
+ <item>
+ <p>
+ Correct spelling of registered (Thanks to Richard
+ Carlsson)</p>
+ <p>
+ Own Id: OTP-9925</p>
+ </item>
+ <item>
+ <p>
+ Put gb_trees documentation into alphabetical order
+ (Thanks to Aidan Hobson Sayers)</p>
+ <p>
+ Own Id: OTP-9929</p>
+ </item>
+ <item>
+ <p>
+ Fix bug in ETS with <c>compressed</c> option and
+ insertion of term containing large integers (>2G) on
+ 64-bit machines. Seen to cause emulator crash. (Thanks to
+ Diego Llarrull for excellent bug report)</p>
+ <p>
+ Own Id: OTP-9932</p>
+ </item>
+ <item>
+ <p>
+ Add plugin support for alternative name lookup This patch
+ introduces a new way of locating a behaviour instance:
+ {via, Module, Name}. (Thanks to Ulf Wiger)</p>
+ <p>
+ Own Id: OTP-9945</p>
+ </item>
+ <item>
+ <p> The function <c>digraph_utils:condensation/1</c> used
+ to create a digraph containing loops contradicting the
+ documentation which states that the created digraph is
+ free of cycles. This bug has been fixed. (Thanks to
+ Kostis Sagonas for finding the bug.) </p>
+ <p>
+ Own Id: OTP-9953</p>
+ </item>
+ <item>
+ <p> When an escript ends now all printout to standard
+ output and standard error gets out on the terminal. This
+ bug has been corrected by changing the behaviour of
+ erlang:halt/0,1, which should fix the same problem for
+ other escript-like applications, i.e that data stored in
+ the output port driver buffers got lost when printing on
+ a TTY and exiting through erlang:halt/0,1. </p>
+ <p> The BIF:s erlang:halt/0,1 has gotten improved
+ semantics and there is a new BIF erlang:halt/2 to
+ accomplish something like the old semantics. See the
+ documentation. </p>
+ <p> Now erlang:halt/0 and erlang:halt/1 with an integer
+ argument will close all ports and allow all pending async
+ threads operations to finish before exiting the emulator.
+ Previously erlang:halt/0 and erlang:halt(0) would just
+ wait for pending async threads operations but not close
+ ports. And erlang:halt/1 with a non-zero integer argument
+ would not even wait for pending async threads operations.
+ </p>
+ <p> To roughly the old behaviour, to not wait for ports
+ and async threads operations when you exit the emulator,
+ you use erlang:halt/2 with an integer first argument and
+ an option list containing {flush,false} as the second
+ argument. Note that now is flushing not dependant of the
+ exit code, and you can not only flush async threads
+ operations which we deemed as a strange behaviour anyway.
+ </p>
+ <p>Also, erlang:halt/1,2 has gotten a new feature: If the
+ first argument is the atom 'abort' the emulator is
+ aborted producing a core dump, if the operating system so
+ allows. </p>
+ <p>
+ Own Id: OTP-9985</p>
+ </item>
+ <item>
+ <p>
+ Add escript win32 alternative invocation. escript can now
+ be started as both "escript.exe" and "escript" (Thanks to
+ Pierre Rouleau)</p>
+ <p>
+ Own Id: OTP-9997</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>STDLIB 1.18</title>
<section><title>Fixed Bugs and Malfunctions</title>