From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26148 invoked by alias); 26 Oct 2011 13:06:41 -0000 Received: (qmail 26140 invoked by uid 22791); 26 Oct 2011 13:06:40 -0000 X-SWARE-Spam-Status: No, hits=-2.9 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 26 Oct 2011 13:06:26 +0000 From: "redi at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/50862] deadlock in std::condition_variable_any Date: Wed, 26 Oct 2011 13:06:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libstdc++ X-Bugzilla-Keywords: X-Bugzilla-Severity: major X-Bugzilla-Who: redi at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: redi at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.6.3 X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2011-10/txt/msg02644.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50862 --- Comment #13 from Jonathan Wakely 2011-10-26 13:05:52 UTC --- (In reply to comment #11) > unique_lock __my_lock(_M_mutex); > _Unlock __unlock(__lock); > unique_lock __my_lock2(std::move(__my_lock)); > _M_cond.wait(__my_lock2); > __unlock.release().lock(); // if no exception so far - may throw here This re-locks it while _M_mutex is locked, reintroducing the deadlock