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authorErlang/OTP <[email protected]>2017-12-08 10:57:50 +0100
committerErlang/OTP <[email protected]>2017-12-08 10:57:50 +0100
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Update release notes
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</header>
<p>This document describes the changes made to the ERTS application.</p>
+<section><title>Erts 9.2</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Fix a bug in tracing where the {caller} match spec
+ function would be set to undefined incorrectly when used
+ in conjunction with return_to or return_trace on some
+ functions.</p>
+ <p>
+ The functions effected are: erlang:put/2, erlang:erase/1,
+ erlang:process_info/1,2, erlang:nif_load/2,
+ erts_internal:garbage_collection/1 and
+ erts_internal:check_process_code/1.</p>
+ <p>
+ Because of this bug, the analysis done by fprof could
+ become incorrect when the functions above are the
+ tail-call in a function.</p>
+ <p>
+ Own Id: OTP-14677</p>
+ </item>
+ <item>
+ <p>
+ Fix emulator deadlock that would happen if
+ <c>trap_exit</c> was set to true and a process sends an
+ exit signal to itself using <c>exit(self(), Reason)</c>
+ while receive tracing was enabled for that process.</p>
+ <p>
+ Own Id: OTP-14678 Aux Id: ERL-495 </p>
+ </item>
+ <item>
+ <p>Writing of crash dumps is significantly faster.</p>
+ <p>Maps are now included in crash dumps.</p>
+ <p>Constants terms would only be shown in one process,
+ while other processes referencing the same constant term
+ would show a marker for incomplete heap. </p>
+ <p>
+ Own Id: OTP-14685 Aux Id: OTP-14611, OTP-14603, OTP-14595 </p>
+ </item>
+ <item>
+ <p>
+ The fallback home directory for windows has been changed
+ to be the PROFILE directory instead of the WINDOWS
+ directory. The fallback is used when the environment
+ variables HOMEDRIVE and HOMEPATH have not been set.</p>
+ <p>
+ Own Id: OTP-14691</p>
+ </item>
+ <item>
+ <p>
+ Fix bug for hipe compiled code using
+ <c>&lt;&lt;X/utf32&gt;&gt;</c> binary construction that
+ could cause faulty result or even VM crash.</p>
+ <p>
+ On architectures other than x86_64, code need to be
+ recompiled to benefit from this fix.</p>
+ <p>
+ Own Id: OTP-14740</p>
+ </item>
+ <item>
+ <p>
+ Fixed bug in <c>erlang:garbage_collect/2</c> and
+ <c>erlang:check_process_code/3</c>, when called with
+ option <c>{async,ReqestId}</c>. Could cause VM crash or
+ heap corruption if <c>RequestId</c> was an immediate term
+ (like a pid, atom or small integer). Bug exists since
+ OTP-17.0.</p>
+ <p>
+ Own Id: OTP-14752</p>
+ </item>
+ <item>
+ <p>ERL_NIF_MINOR_VERSION wasn't bumped with the addition
+ of <c>enif_ioq_*</c>.</p>
+ <p>
+ Own Id: OTP-14779</p>
+ </item>
+ <item>
+ <p>Purging of loaded code that contained "fake literals"
+ (for example the magic reference obtained from
+ '<c>ets:new/2</c>') would crash the runtime system.
+ Corrected.</p>
+ <p>
+ Own Id: OTP-14791</p>
+ </item>
+ <item>
+ <p>Setting the size of the atom table to a number near
+ 2147483647 (using the '<c>+t</c>' option) would cause the
+ emulator to exit with a failure to allocate a huge amount
+ of memory. This has been corrected. Also the usage
+ message for the '<c>+t</c>' option has been corrected to
+ show the correct upper limit 2147483647 instead of 0.</p>
+ <p>
+ Own Id: OTP-14796</p>
+ </item>
+ <item>
+ <p>Fixed a bug that prevented registered process names
+ from being resolved in lcnt results.</p>
+ <p>
+ Own Id: OTP-14803</p>
+ </item>
+ <item>
+ <p>Formatting bugs were fixed in several HiPE debug
+ BIFs.</p>
+ <p>
+ Own Id: OTP-14804</p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>Binaries and some other data in crash dumps are now
+ encoded in base64 (instead of in hex), which will reduce
+ the size of crash dumps.</p>
+ <p>A few bugs in the handling of sub binaries in
+ <c>crashdump_viewer</c> have been fixed.</p>
+ <p>
+ Own Id: OTP-14686</p>
+ </item>
+ <item>
+ <p>
+ Micro optimization for send operations of messages to
+ other nodes. The local ack-message, which is otherwise
+ sent back from TPC/IP port driver to sending client
+ process, is now ignored earlier for distributed send
+ operations.</p>
+ <p>
+ Own Id: OTP-14689</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erts 9.1.5</title>
<section><title>Fixed Bugs and Malfunctions</title>