From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 48FF73858417; Wed, 9 Feb 2022 00:27:38 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 48FF73858417 From: "rodgertq at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/104442] atomic::wait incorrectly loops in case of spurious notification when __waiter is shared Date: Wed, 09 Feb 2022 00:27:38 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libstdc++ X-Bugzilla-Version: 11.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rodgertq at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Resolution: 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: everconfirmed cf_reconfirmed_on cc bug_status Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Feb 2022 00:27:38 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104442 Thomas Rodgers changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Last reconfirmed| |2022-02-09 CC| |rodgertq at gcc dot gnu.org Status|UNCONFIRMED |ASSIGNED --- Comment #1 from Thomas Rodgers --- I took a look at whether or not it made sense to do a different refactoring with this version of the implementation and I don't believe that it does (t= he implementation detail here is likely to change substantially when we commit= to an ABI stable version) and indeed, the predicate version does exactly what = this patch proposes.=