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From: "bkoz at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/54172] [4.7/4.8 Regression] __cxa_guard_acquire thread-safety issue
Date: Thu, 06 Sep 2012 20:32:00 -0000 [thread overview]
Message-ID: <bug-54172-4-Yt7v4NU0uP@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-54172-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54172
--- Comment #12 from Benjamin Kosnik <bkoz at gcc dot gnu.org> 2012-09-06 20:31:13 UTC ---
Author: bkoz
Date: Thu Sep 6 20:31:08 2012
New Revision: 191042
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=191042
Log:
2012-09-06 Thiago Macieira <thiago.macieira@intel.com>
PR libstdc++/54172
* libsupc++/guard.cc (__cxa_guard_acquire): Exit the loop earlier if
we detect that another thread has had success. Don't compare_exchange
from a finished state back to a waiting state. Comment.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/libsupc++/guard.cc
next prev parent reply other threads:[~2012-09-06 20:32 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-04 11:37 [Bug libstdc++/54172] New: [4.7 " thiago at kde dot org
2012-08-04 17:31 ` [Bug libstdc++/54172] [4.7/4.8 " rguenth at gcc dot gnu.org
2012-08-05 19:36 ` redi at gcc dot gnu.org
2012-08-10 15:07 ` jakub at gcc dot gnu.org
2012-08-30 2:40 ` foom at fuhm dot net
2012-08-30 7:53 ` thiago at kde dot org
2012-08-30 8:21 ` jakub at gcc dot gnu.org
2012-08-30 9:57 ` redi at gcc dot gnu.org
2012-09-01 8:27 ` thiago at kde dot org
2012-09-04 17:20 ` rth at gcc dot gnu.org
2012-09-04 17:48 ` thiago at kde dot org
2012-09-05 16:23 ` paolo.carlini at oracle dot com
2012-09-06 18:54 ` rth at gcc dot gnu.org
2012-09-06 20:32 ` bkoz at gcc dot gnu.org [this message]
2012-09-07 10:24 ` [Bug libstdc++/54172] [4.7 " rguenth at gcc dot gnu.org
2012-09-10 5:09 ` bkoz at gcc dot gnu.org
2012-09-10 5:10 ` bkoz at gcc dot gnu.org
2012-09-10 5:11 ` bkoz at gcc dot gnu.org
2012-09-11 15:24 ` jakub at gcc dot gnu.org
2012-09-11 15:25 ` jakub at gcc dot gnu.org
2012-09-11 15:26 ` jakub at gcc dot gnu.org
2012-09-20 10:20 ` jakub at gcc dot gnu.org
2012-09-26 18:41 ` bkoz at gcc dot gnu.org
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