[Bug 239550] std::thread::id uses pthread_equal in undefined ways not handled by _pthread_stubs

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239550

--- Comment #5 from [email protected] ---
A commit references this bug:

Author: dim
Date: Tue Sep  3 17:31:14 UTC 2019
New revision: 351767
URL: https://svnweb.freebsd.org/changeset/base/351767

Log:
  MFC r351253:

  Pull in r368867 from upstream libc++ trunk (by Marshall Clow):

    Rework recursive_timed_mutex so that it uses __thread_id instead of
    using the lower-level __libcpp_thread_id. This is prep for fixing
    PR42918. Reviewed as https://reviews.llvm.org/D65895

  Pull in r368916 from upstream libc++ trunk (by Marshall Clow):

    Fix thread comparison by making sure we never pass our special 'not a
    thread' value to the underlying implementation. Fixes PR#42918.

  This should fix std::thread::id::operator==() attempting to call
  pthread_equal(3) with zero values.

  Reported by:  [email protected]
  PR:           239038, 239550

Changes:
_U  stable/11/
  stable/11/contrib/libc++/include/__threading_support
  stable/11/contrib/libc++/include/mutex
  stable/11/contrib/libc++/include/thread
  stable/11/contrib/libc++/src/mutex.cpp
_U  stable/12/
  stable/12/contrib/libc++/include/__threading_support
  stable/12/contrib/libc++/include/mutex
  stable/12/contrib/libc++/include/thread
  stable/12/contrib/libc++/src/mutex.cpp

-- 
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
[email protected] mailing list
https://lists.freebsd.org/mailman/listinfo/freebsd-threads
To unsubscribe, send any mail to "[email protected]"