LTTng-UST 2.13.1 (Linux user-space tracer)

This 2.13.1 release of LTTng-UST is a bugfix-only release for various shortcomings that were identified in the 2.13.0 release.

A few key highlights: the C++ support for building probe providers has been improved, async-signal-safety of the close wrapper has been fixed, pthread cancelstate in nested use scenarios is now properly handled.

2021-12-10 (Lost and Found Day) lttng-ust 2.13.1
* Fix: ust-compiler: constructor/destructor build on g++ 4.8
* ust-compiler: constructor/destructor whitespaces layout and macro dependency
* Fix: ust-cancelstate: include string.h for strerror
* Fix: libnuma is prepended to LIBS
* fix: Allow disabling some abi compat tests
* Fix: generate probe registration constructor as a C++ constuctor
* Fix: nestable pthread cancelstate
* Fix: abort on decrement_sem_count during concurrent tracing start and teardown
* fix: allocating C++ compound literal on heap with Clang
* Check for C++11 when building C++ probe providers
* fix: liblttng-ust-fd async-signal-safe close()
* tracepoints: print debug message when lttng-ust-tracepoint.so is not found
* Fix: static_assert unavailable with glibc < 2.16
* Fix: combined tracing of lttng-ust 2.12/2.13 generates corrupted traces
* doc/man: Document LTTNG_UST_ABORT_ON_CRITICAL variable
* fix: remove autoconf features default value in help message
* Set git-review branch to stable-2.13
* Fix: add extern "C" to two header files

Project website: https://lttng.org
Documentation: https://lttng.org/docs
Download link: https://lttng.org/download

Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com