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[Bug libgomp/51376] libgomp taskwait failure
- From: "amodra at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 05 Feb 2013 13:40:35 +0000
- Subject: [Bug libgomp/51376] libgomp taskwait failure
- Auto-submitted: auto-generated
- References: <bug-51376-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51376
--- Comment #6 from Alan Modra <amodra at gcc dot gnu.org> 2013-02-05 13:40:35 UTC ---
Author: amodra
Date: Tue Feb 5 13:40:25 2013
New Revision: 195756
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195756
Log:
PR libgomp/51376
PR libgomp/56073
* task.c (GOMP_task): Revert 2011-12-09 change.
(GOMP_taskwait): Likewise. Instead use atomic load with acquire
barrier to read task->children..
(gomp_barrier_handle_tasks): ..and matching atomic store with
release barrier here when setting parent->children to NULL.
Modified:
branches/gcc-4_7-branch/libgomp/ChangeLog
branches/gcc-4_7-branch/libgomp/task.c