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From: "rth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/60272] atomic<>::compare_exchange_weak has spurious store and can cause race conditions Date: Thu, 20 Feb 2014 17:44:00 -0000 [thread overview] Message-ID: <bug-60272-4-DhIKllWVW7@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-60272-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60272 --- Comment #4 from Richard Henderson <rth at gcc dot gnu.org> --- Author: rth Date: Thu Feb 20 17:43:53 2014 New Revision: 207966 URL: http://gcc.gnu.org/viewcvs?rev=207966&root=gcc&view=rev Log: PR c++/60272 gcc/ * builtins.c (expand_builtin_atomic_compare_exchange): Conditionalize on failure the store back into EXPECT. libatomic/ * cas_n.c (libat_compare_exchange): Conditionalize on failure the store back to EPTR. Modified: trunk/gcc/ChangeLog trunk/gcc/builtins.c trunk/libatomic/ChangeLog trunk/libatomic/cas_n.c
next prev parent reply other threads:[~2014-02-20 17:44 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-02-19 11:04 [Bug c++/60272] New: " anthony.ajw at gmail dot com 2014-02-19 11:19 ` [Bug c++/60272] " redi at gcc dot gnu.org 2014-02-19 12:27 ` jakub at gcc dot gnu.org 2014-02-19 18:19 ` torvald at gcc dot gnu.org 2014-02-19 18:34 ` rth at gcc dot gnu.org 2014-02-20 17:44 ` rth at gcc dot gnu.org [this message] 2014-02-21 0:12 ` rth at gcc dot gnu.org 2014-02-21 0:14 ` rth at gcc dot gnu.org 2014-02-21 0:17 ` rth at gcc dot gnu.org
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