From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14721 invoked by alias); 20 Nov 2013 17:56:23 -0000 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 Received: (qmail 12402 invoked by uid 48); 20 Nov 2013 17:55:25 -0000 From: "redi at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug sanitizer/59215] tsan: warning in shared_ptr_base.h Date: Wed, 20 Nov 2013 17:56:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: sanitizer X-Bugzilla-Version: 4.8.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: redi at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2013-11/txt/msg02054.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59215 --- Comment #4 from Jonathan Wakely --- (In reply to Oleg Smolsky from comment #0) > in ...gcc/include/c++/4.8.x-google/x86_64-unknown-linux/bits/atomic_word.h > > typedef int _Atomic_word; > > Should this be std::atomic ? No. (In reply to Kostya Serebryany from comment #3) > If that's via __sync_* or __atomic_* intrinsics, tsan will understand that. All ref-count updates are via __atomic built-ins. > But only if you re-compile stdlibc++ with tsan, It's libstdc++ not stdlibc++, I don't know why everyone gets that wrong :-) Anyway, this is already documented: http://gcc.gnu.org/onlinedocs/libstdc++/manual/debug.html#debug.races