From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 5E6463858415; Wed, 6 Oct 2021 16:44:08 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 5E6463858415 From: "aldyh at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/102631] -Wmaybe-uninitialized cannot see through a series of PHIs Date: Wed, 06 Oct 2021 16:44:08 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: aldyh at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED 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: 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, 06 Oct 2021 16:44:08 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102631 --- Comment #1 from Aldy Hernandez --- $ ./cc1 team.i -O2 -quiet -Wall /home/aldyh/src/gcc/libgomp/team.c: In function =E2=80=98gomp_team_start=E2= =80=99: /home/aldyh/src/gcc/libgomp/team.c:315:34: warning: =E2=80=98start_data=E2= =80=99 may be used uninitialized in this function [-Wmaybe-uninitialized] 315 | struct gomp_thread_start_data *start_data =3D NULL; | ^~~~~~~~~~=