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</header>
<p>This document describes the changes made to the ERTS application.</p>
+<section><title>Erts 10.1</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Fix the seq_trace token to not be cleared when a process
+ receives messages sent by erts. Some examples of when
+ this could happen is all port BIFs, i.e.
+ <c>open_port</c>, <c>port_command</c> etc etc.</p>
+ <p>
+ Fix so that messages sent by nifs can be traced using
+ normal and <c>seq_trace</c> tracing.</p>
+ <p>
+ Own Id: OTP-15038 Aux Id: ERL-602 </p>
+ </item>
+ <item>
+ <p>
+ Fixed specs and documentation for <c>process_info</c>
+ item <c>monitored_by</c> to include port identifiers and
+ nif resources as possible types.</p>
+ <p>
+ Own Id: OTP-15180 Aux Id: ERL-648 </p>
+ </item>
+ <item>
+ <p>
+ Fix bug in generation of erl_crash.dump, which could
+ cause VM to crash.</p>
+ <p>
+ Bug exist since erts-9.2 (OTP-20.2).</p>
+ <p>
+ Own Id: OTP-15181</p>
+ </item>
+ <item>
+ <p>
+ Fix bug where ctrl-break or ctrl-c would not trigger the
+ break mode properly on Windows. This bug was introduced
+ in erts-10.0 (OTP-21).</p>
+ <p>
+ Own Id: OTP-15205</p>
+ </item>
+ <item>
+ <p>
+ Fix a performance bug for reception of UDP packages,
+ where a memory buffer would be reallocated when it should
+ not have been.</p>
+ <p>
+ Introduce a limit on the maximum automatic increase of
+ the UDP user-space buffer to the theoretical max of the
+ network PATH, i.e. 65535.</p>
+ <p>
+ Own Id: OTP-15206</p>
+ </item>
+ <item>
+ <p>
+ Fix alignment of erts allocator state internally in erts.
+ With the improper alignment the emulator would refuse to
+ start when compiled with clang on 32-bit systems.</p>
+ <p>
+ Own Id: OTP-15208 Aux Id: PR-1897 ERL-677 </p>
+ </item>
+ <item>
+ <p>
+ Fix bug where too many concurrent calls to
+ <c>erlang:open_port({spawn,"cmd"},...)</c> would result
+ in the emulator terminating with the reason "Failed to
+ write to erl_child_setup: ". After this fix the
+ <c>open_port</c> call will throw an <c>emfile</c>
+ exception instead.</p>
+ <p>
+ Own Id: OTP-15210</p>
+ </item>
+ <item>
+ <p>
+ Upgraded the ERTS internal PCRE library from version 8.41
+ to version 8.42. See <url
+ href="http://pcre.org/original/changelog.txt">http://pcre.org/original/changelog.txt</url>
+ for information about changes made to PCRE. This library
+ implements major parts of the <seealso
+ marker="stdlib:re"><c>re</c></seealso> regular
+ expressions module.</p>
+ <p>
+ Own Id: OTP-15217</p>
+ </item>
+ <item>
+ <p>
+ Fix <c>open_port({fd,X,Y}, ...)</c> to release the file
+ descriptors from the pollset when closing the port.
+ Without this fix the same file descriptor number could
+ not be reused when doing multiple open_port and
+ port_close sequences.</p>
+ <p>
+ Own Id: OTP-15236 Aux Id: ERL-692 </p>
+ </item>
+ <item>
+ <p>
+ Fixed bug in <c>float_to_list/2</c> and
+ <c>float_to_binary/2</c> with options
+ <c>[{decimals,0},compact]</c> causing totally wrong
+ results. Bug exists since OTP-21.0.</p>
+ <p>
+ Own Id: OTP-15276 Aux Id: PR-1920 </p>
+ </item>
+ <item>
+ <p>
+ Fixed bug in <c>erlang:memory</c> causing <c>ets</c> to
+ report too much. This small false memory leak (16 bytes
+ each time) can only happen when a specific race condition
+ occurs between scheduler threads on a table with option
+ <c>write_concurrency</c>.</p>
+ <p>
+ Own Id: OTP-15278</p>
+ </item>
+ <item>
+ <p>
+ Minor <c>configure</c> test fixes</p>
+ <p>
+ Own Id: OTP-15282</p>
+ </item>
+ <item>
+ <p>
+ Improved robustness of distribution connection setup. In
+ OTP-21.0 a truly asynchronous connection setup was
+ introduced. This is further improvement on that work to
+ make the emulator more robust and also be able to recover
+ in cases when involved Erlang processes misbehave.</p>
+ <p>
+ Own Id: OTP-15297 Aux Id: OTP-15279, OTP-15280 </p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>
+ The socket options <c>recvtos</c>, <c>recvttl</c>,
+ <c>recvtclass</c> and <c>pktoptions</c> have been
+ implemented in the socket modules. See the documentation
+ for the <c>gen_tcp</c>, <c>gen_udp</c> and <c>inet</c>
+ modules. Note that support for these in the runtime
+ system is platform dependent. Especially for
+ <c>pktoptions</c> which is very Linux specific and
+ obsoleted by the RFCs that defined it.</p>
+ <p>
+ Own Id: OTP-15145 Aux Id: ERIERL-187 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erts 10.0.8</title>
<section><title>Fixed Bugs and Malfunctions</title>