http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51249
Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2011-11-21
AssignedTo|unassigned at gcc dot |amodra at gmail dot com
|gnu.org |
Ever Confirmed|0 |1
--- Comment #1 from Alan Modra <amodra at gmail dot com> 2011-11-21 03:07:04
UTC ---
What's more, the mutex implementation has a similar problem.
libgomp/config/linux/mutex.c gomp_mutex_lock_slow uses a value of 2 in the
mutex to flag that threads are waiting on the mutex, similar to sem.c use of -1
in sem. When two or more threads are waiting it is possible to clear the flag,
wake one thread but leave the other blocked forever.
