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authorErlang/OTP <[email protected]>2019-03-11 11:52:56 +0100
committerErlang/OTP <[email protected]>2019-03-11 11:52:56 +0100
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</header>
<p>This document describes the changes made to the ERTS application.</p>
+<section><title>Erts 10.3</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>When multiplying a number by itself, a word beyond the
+ number on the heap could be read (and ignored). This bug
+ was extremely unlikely to actually cause a real
+ problem.</p>
+ <p>
+ Own Id: OTP-15484</p>
+ </item>
+ <item>
+ <p>
+ Fix bug where doing <c>seq_trace:reset_trace()</c> while
+ another process was doing a garbage collection could
+ cause the run-time system to segfault.</p>
+ <p>
+ Own Id: OTP-15490</p>
+ </item>
+ <item>
+ <p>
+ Fix reading of ancillary data from packet oriented
+ sockets on old Linux kernel versions. Without this fix,
+ getting the data would cause the port to enter an
+ infinite loop.</p>
+ <p>
+ Own Id: OTP-15494</p>
+ </item>
+ <item>
+ <p>
+ Fix bug where crash dumping or doing
+ <c>erlang:system_info(procs)</c> while another process
+ was doing a garbage collection could cause the run-time
+ system to segfault.</p>
+ <p>
+ Own Id: OTP-15527</p>
+ </item>
+ <item>
+ <p>
+ Fix <c>erlang:system_info(kernel_poll)</c> to return
+ correct value. Before this fix, the call always returned
+ <c>false</c>.</p>
+ <p>
+ Own Id: OTP-15556</p>
+ </item>
+ <item>
+ <p>
+ Fix bug in <c>enif_make_map_from_arrays</c> that would
+ produce broken maps when number of keys were 32. Bug
+ exists since OTP 21.0.</p>
+ <p>
+ Own Id: OTP-15567</p>
+ </item>
+ <item>
+ <p>
+ Fix a bug in <c>binary:encode_unsigned</c> that may cause
+ a read of uninitialized memory.</p>
+ <p>
+ The bug existed since the function was added (OTP
+ R16B02).</p>
+ <p>
+ Own Id: OTP-15583 Aux Id: PR-2118 </p>
+ </item>
+ <item>
+ <p>
+ Fixed a bug that could cause <c>heart</c> to kill an
+ exiting node before it had time to flush all buffered
+ writes. If environment variable
+ <c>HEART_KILL_SIGNAL=SIGABRT</c> was set a superfluous
+ core dump could also be generated.</p>
+ <p>
+ Own Id: OTP-15599 Aux Id: ERIERL-298 </p>
+ </item>
+ <item>
+ <p>
+ Fix <c>enif_consume_timeslice</c> to be a no-op on dirty
+ scheduler and not crash debug compiled emulator.</p>
+ <p>
+ Own Id: OTP-15604</p>
+ </item>
+ <item>
+ <p>
+ Fixed macro redefinition warnings.</p>
+ <p>
+ Own Id: OTP-15629</p>
+ </item>
+ <item>
+ <p>
+ <c>to_erl</c> fixed to not garble terminal input beyond
+ 7-bit ASCII.</p>
+ <p>
+ Own Id: OTP-15650 Aux Id: ERL-854, PR-2161 </p>
+ </item>
+ <item>
+ <p>
+ Minor fixes for <c>make clean</c>.</p>
+ <p>
+ Own Id: OTP-15657</p>
+ </item>
+ <item>
+ <p>
+ Fixed a bug in all <c>ets:select*</c> and
+ <c>ets:match*</c> functions that could in some rare cases
+ lead to very poor performance.</p>
+ <p>
+ Own Id: OTP-15660 Aux Id: ERL-869 </p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>
+ Add <c>erlang:system_flag(system_logger, Pid)</c> and
+ <c>erlang:system_info(system_logger)</c>. This
+ system_flag can be used to set the process that will
+ receive the logging messages generated by ERTS.</p>
+ <p>
+ Own Id: OTP-15375</p>
+ </item>
+ <item>
+ <p><c>integer_to_list/2</c> and
+ <c>integer_to_binary/2</c> are now implemented in C,
+ improving their performance.</p>
+ <p>
+ Own Id: OTP-15503 Aux Id: PR-2052 </p>
+ </item>
+ <item>
+ <p>
+ Improved <c>term_to_binary</c> to do more fair reduction
+ count and yielding when encoding large byte lists
+ (strings).</p>
+ <p>
+ Own Id: OTP-15514 Aux Id: ERL-774 </p>
+ </item>
+ <item>
+ <p>
+ Made internal port drivers more robust against
+ <c>erlang:port_control</c> with invalid arguments and
+ added documentation warnings about such abuse.</p>
+ <p>
+ Own Id: OTP-15555 Aux Id: ERIERL-231 </p>
+ </item>
+ <item>
+ <p>
+ Fix bug on NetBSD where the <c>exit_status</c> from a
+ port program would never be sent.</p>
+ <p>
+ Own Id: OTP-15558 Aux Id: ERL-725 </p>
+ </item>
+ <item>
+ <p>There is a new function <c>persistent:term(Key,
+ Default)</c> to allow specifying a default when looking
+ up a persistent term.</p>
+ <p>
+ Own Id: OTP-15576 Aux Id: ERL-843 </p>
+ </item>
+ <item>
+ <p>A transitory emulator option '<c>+ztma true</c>' has
+ been added to allow running existing BEAM code that
+ relies on "tuple calls" (dispatch on parameterized
+ modules) which has been compiled under OTP 20 or earlier.
+ This option will be removed in OTP 22, so such modules
+ should eventually be recompiled with the
+ <c>+tuple_calls</c> option.</p>
+ <p>
+ Own Id: OTP-15580 Aux Id: PR-2113 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erts 10.2.5</title>
<section><title>Fixed Bugs and Malfunctions</title>