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diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml index dd260f2d1f..35d7381cf3 100644 --- a/erts/doc/src/notes.xml +++ b/erts/doc/src/notes.xml @@ -4,7 +4,7 @@ <chapter> <header> <copyright> - <year>2004</year><year>2016</year> + <year>2004</year><year>2017</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -32,6 +32,507 @@ <p>This document describes the changes made to the ERTS application.</p> +<section><title>Erts 8.3.4</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Add option to make SIGTERM trigger the OS default + behaviour instead of doing a gracefull shutdown. To + activate this bahviour the environment variable + ERL_ZZ_SIGTERM_KILL should be set to "true". This option + only works in OTP 19 as OTP 20 will have a different way + to deal with SIGTERM.</p> + <p> + Own Id: OTP-14418 Aux Id: ERIERL-15 </p> + </item> + </list> + </section> + +</section> + +<section><title>Erts 8.3.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fixed memory segment cache used for multiblock carriers. + Huge (> 2GB) memory segments could cause a VM crash. + Creation of such huge memory segments used for multiblock + carriers is however very uncommon.</p> + <p> + Own Id: OTP-14360 Aux Id: ERL-401, PR-1417 </p> + </item> + <item> + <p> + Fix release note for OTP-14290 in ERTS version 8.3.1. It + was erroneously placed under "Known Bugs and Problems".</p> + <p> + Own Id: OTP-14363 Aux Id: OTP-14290 </p> + </item> + </list> + </section> + +</section> + +<section><title>Erts 8.3.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + The <c>+Bi</c> command line argument of <c>erl</c> + erroneously caused <c>SIGTERM</c> to be ignored by the VM + as well as of all its child processes. This bug was + introduced in erts version 8.3.</p> + <p> + Own Id: OTP-14358 Aux Id: OTP-14085 </p> + </item> + </list> + </section> + +</section> + +<section><title>Erts 8.3.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Invoking <c>init:stop/0</c> via the SIGTERM signal, in a + non-SMP BEAM, could cause BEAM to terminate with fatal + error. This has now been fixed and the BEAM will + terminate normally when SIGTERM is received.</p> + <p> + Own Id: OTP-14290</p> + </item> + <item> + <p> + Trying to open a directory with file:read_file/1 on Unix + leaked a file descriptor. This bug has now been fixed.</p> + <p> + Own Id: OTP-14308 Aux Id: ERL-383 </p> + </item> + </list> + </section> + +</section> + +<section><title>Erts 8.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p>Fixed a number of bugs that caused faulty stack-traces + to be generated. The faulty stack traces were generated + either when applying the following functions or tracing + the following functions:</p> <list> + <item><c>erlang:error/1</c></item> + <item><c>erlang:error/2</c></item> + <item><c>erlang:exit/1</c></item> + <item><c>erlang:throw/1</c></item> </list> + <p> + Own Id: OTP-14055</p> + </item> + <item> + <p> + Corrected documentation about memory footprint for maps.</p> + <p> + Own Id: OTP-14118</p> + </item> + <item> + <p> + Fix <c>process_info(Pid, current_stacktrace)</c> to use + stack depth limit set by + <c>system_flag(backtrace_depth)</c>. The old behavior was + a hard coded depth limit of 8.</p> + <p> + Own Id: OTP-14119 Aux Id: PR-1263 </p> + </item> + <item> + <p> + A process calling <seealso + marker="erlang#system_flag_multi_scheduling"><c>erlang:system_flag(multi_scheduling, + block)</c></seealso> could end up hanging forever in the + call.</p> + <p> + Own Id: OTP-14121</p> + </item> + <item> + <p>Dirty scheduler bug fixes:</p> <list> <item><p>Fixed + call time tracing of process being scheduled on dirty + scheduler.</p></item> <item><p>GC info from dirty + schedulers.</p></item> <item><p>Multi scheduling block + with dirty schedulers could crash the runtime + system.</p></item> <item><p>Process structures could be + removed prematurely.</p></item> <item><p>GC on dirty + scheduler could crash the runtime system.</p></item> + <item><p>Termination of a process executing on a dirty + scheduler could cause a runtime system crash.</p></item> + </list> + <p> + Own Id: OTP-14122</p> + </item> + <item> + <p> + Fixed crash that occurred when writing timer data to a + crash dump.</p> + <p> + Own Id: OTP-14133</p> + </item> + <item> + <p> + A literal area could be removed while still referred from + processes.</p> + <p> + Own Id: OTP-14134</p> + </item> + <item> + <p> + Fixed a bug in the garbage collector that could crash the + runtime system.</p> + <p> + Own Id: OTP-14135</p> + </item> + <item> + <p> + Fixed a bug in call-time trace for NIFs which caused + tracing to erroneously be started multiple times for one + call.</p> + <p> + Own Id: OTP-14136</p> + </item> + <item> + <p> + Remove a debug printout and an unnecessary garbage + collection when handling exceptions in hipe compiled + code.</p> + <p> + Own Id: OTP-14153</p> + </item> + <item> + <p> + Fix bug in tracing of garbage collection that could cause + VM crash. Bug exists since OTP 19.0.</p> + <p> + Own Id: OTP-14154</p> + </item> + <item> + <p> + Fix bug in <c>binary_to_term</c> for binaries created by + <c>term_to_binary </c> with option <c>compressed</c>. The + bug can cause <c>badarg</c> exception for a valid binary + when Erlang VM is linked against a <c>zlib</c> library of + version 1.2.9 or newer. Bug exists since OTP 17.0.</p> + <p> + Own Id: OTP-14159 Aux Id: ERL-340 </p> + </item> + <item> + <p> + Fix suspension of schedulers when generating a crashdump.</p> + <p> + Own Id: OTP-14164</p> + </item> + <item> + <p>NIF resources was not handled in a thread-safe manner + in the runtime system without SMP support.</p> + <p>As a consequence of this fix, the following driver + functions are now thread-safe also in the runtime system + without SMP support:</p> <list> + <item><p><c>driver_free_binary()</c></p></item> + <item><p><c>driver_realloc_binary()</c></p></item> + <item><p><c>driver_binary_get_refc()</c></p></item> + <item><p><c>driver_binary_inc_refc()</c></p></item> + <item><p><c>driver_binary_dec_refc()</c></p></item> + </list> + <p> + Own Id: OTP-14202</p> + </item> + <item> + <p> + Fix <c>erlang:round/1</c> for large floating point + numbers with an odd absolute value between <c>(1 bsl + 52)</c> and <c>(1 bsl 53)</c>. The result was falsely + calculated as the next higher even number even though all + integer values up to <c>(1 bsl 53)</c> can be represented + as floats with full precision.</p> + <p> + Own Id: OTP-14227</p> + </item> + <item> + <p> + Add size of literals to module code size in crash dump + and <c>(l)oaded</c> command in break menu like it used to + be before OTP-19.0.</p> + <p> + Own Id: OTP-14228</p> + </item> + <item> + <p> + Fix potential bug in <c>enif_send</c> when called without + a process context and with argument <c>msg_env</c> as + <c>NULL</c>.</p> + <p> + Own Id: OTP-14229</p> + </item> + <item> + <p> + Fix bug where passing an appendable binary to + <c>erlang:port_control()</c> could crash the emulator.</p> + <p> + Own Id: OTP-14231</p> + </item> + <item> + <p> + Receive expressions with timeout in the Erlang shell + could cause a VM crash.</p> + <p> + Own Id: OTP-14241 Aux Id: ERL-365 </p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + A received SIGTERM signal to beam will generate a + <c>'stop'</c> message to the <c>init</c> process and + terminate the Erlang VM nicely. This is equivalent to + calling <c>init:stop/0</c>.</p> + <p> + Own Id: OTP-14085</p> + </item> + <item> + <p> + Workaround for buggy Android implementation of + <c>PTHREAD_STACK_MIN</c> causing build of runtime system + to crash on undeclared <c>PAGE_SIZE</c>.</p> + <p> + Own Id: OTP-14165 Aux Id: ERL-319 </p> + </item> + <item> + <p> + Add configure option --without-thread-names that removes + the naming of individual emulator threads.</p> + <p> + Own Id: OTP-14234</p> + </item> + <item> + <p> + Add warning in documentation of <c>zlib:deflateInit/6</c> + about option <c>WindowsBits</c> values 8 and -8.</p> + <p> + Own Id: OTP-14254 Aux Id: ERL-362 </p> + </item> + </list> + </section> + +</section> + +<section><title>Erts 8.2.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix bug in <c>binary_to_term</c> for binaries created by + <c>term_to_binary </c> with option <c>compressed</c>. The + bug can cause <c>badarg</c> exception for a valid binary + when Erlang VM is linked against a <c>zlib</c> library of + version 1.2.9 or newer. Bug exists since OTP 17.0.</p> + <p> + Own Id: OTP-14159 Aux Id: ERL-340 </p> + </item> + <item> + <p> + The driver efile_drv when opening a file now use fstat() + on the open file instead of stat() before opening, if + fstat() exists. This avoids a race when the file happens + to change between stat() and open().</p> + <p> + Own Id: OTP-14184 Aux Id: seq-13266 </p> + </item> + </list> + </section> + +</section> + +<section><title>Erts 8.2.1</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix a quite rare bug causing VM crash during code loading + and the use of export funs (fun M:F/A) of not yet loaded + modules. Requires a very specfic timing of concurrent + scheduler threads. Has been seen on ARM but can probably + also occure on other architectures. Bug has existed since + OTP R16.</p> + <p> + Own Id: OTP-14144 Aux Id: seq13242 </p> + </item> + </list> + </section> + +</section> + +<section><title>Erts 8.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fixed <c>configure</c> failures on MacOSX. Most important + <c>clock_gettime()</c> was detected when building for + MacOSX - El Capitan using XCode 8 despite it is not + available until MacOSX - Sierra.</p> + <p> + Own Id: OTP-13904 Aux Id: ERL-256 </p> + </item> + <item> + <p> + <c>code:add_pathsa/1</c> and command line option + <c>-pa</c> both revert the given list of directories when + adding it at the beginning of the code path. This is now + documented.</p> + <p> + Own Id: OTP-13920 Aux Id: ERL-267 </p> + </item> + <item> + <p> + Fix a compilation error of erts in OpenBSD related to the + usage of the __errno variable.</p> + <p> + Own Id: OTP-13927</p> + </item> + <item> + <p> + Fixed so that when enabling tracing on a process that had + an invalid tracer associated with it, the new tracer + overwrites the old tracer. Before this fix, calling + erlang:trace/3 would behave as if the tracer was still + alive and not apply the new trace.</p> + <p> + This fault was introduced in ERTS 8.0.</p> + <p> + Own Id: OTP-13928</p> + </item> + <item> + <p> + Fix parsing of <c>-profile_boot 'true' | 'false'</c></p> + <p> + Own Id: OTP-13955 Aux Id: ERL-280 </p> + </item> + <item> + <p> + A slight improvement of <c>erlang:get_stacktrace/0</c> + for exceptions raised in hipe compiled code. Beam + compiled functions in such stack trace was earlier + replaced by some unrelated function. They are now instead + omitted. This is an attempt to reduce the confusion in + the absence of a complete and correct stack trace for + mixed beam and hipe functions.</p> + <p> + Own Id: OTP-13992</p> + </item> + <item> + <p> Correct type declaration of match specification head. + </p> + <p> + Own Id: OTP-13996</p> + </item> + <item> + <p> + HiPE code loading failed for x86_64 if gcc was configured + with <c>--enable-default-pie</c>. Fixed by disabling PIE, + if needed for HiPE, when building the VM.</p> + <p> + Own Id: OTP-14031 Aux Id: ERL-294, PR-1239 </p> + </item> + <item> + <p> + Faulty arguments could be presented on exception from a + NIF that had rescheduled itself using + <c>enif_schedule_nif()</c>.</p> + <p> + Own Id: OTP-14048</p> + </item> + <item> + <p> + The runtime system could crash if a garbage collection on + a process was performed immediately after a NIF had been + rescheduled using <c>enif_schedule_nif()</c>.</p> + <p> + Own Id: OTP-14049</p> + </item> + <item> + <p> + A reference to purged code could be left undetected by + the purge operation if a process just had rescheduled a + NIF call using <c>enif_schedule_nif()</c> when the + process was checked. This could cause a runtime system + crash.</p> + <p> + Own Id: OTP-14050</p> + </item> + <item> + <p>Fixed a number of dirty scheduler related bugs:</p> + <list> <item><p>Process priority was not handled correct + when scheduling on a dirty scheduler.</p></item> + <item><p>The runtime system could crash when an exit + signal with a compound exit reason was sent to a process + executing on a dirty scheduler.</p></item> <item><p>The + runtime system crashed when call tracing a process + executing on a dirty scheduler.</p></item> <item><p>A + code purge operation could end up hanging forever when a + process executed on a dirty scheduler</p></item> </list> + <p> + Own Id: OTP-14051</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Fix minor soft purge race bug that could incorrectly + trigger code_server to load new code for the module if + the soft purge failed and no current version of the + module existed.</p> + <p> + Own Id: OTP-13925</p> + </item> + <item> + <p> + To ease troubleshooting, <c>erlang:load_nif/2</c> now + includes the return value from a failed call to + load/reload/upgrade in the text part of the error tuple. + The <c>crypto</c> NIF makes use of this feature by + returning the source line where/if the initialization + fails.</p> + <p> + Own Id: OTP-13951</p> + </item> + <item> + <p> + New environment variable <c>ERL_CRASH_DUMP_BYTES</c> can + be used to limit the size of crash dumps. If the limit is + reached, crash dump generation is aborted and the + generated file will be truncated.</p> + <p> + Own Id: OTP-14046</p> + </item> + </list> + </section> + +</section> + <section><title>Erts 8.1.1</title> <section><title>Fixed Bugs and Malfunctions</title> |