From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5241 invoked by alias); 6 Aug 2014 07:03:21 -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 5203 invoked by uid 48); 6 Aug 2014 07:03:16 -0000 From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/62030] wrong code due to ifcvt merging two stores which have different aliasing sets Date: Wed, 06 Aug 2014 07:03:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: rtl-optimization X-Bugzilla-Version: 4.10.0 X-Bugzilla-Keywords: alias, wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia 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: 2014-08/txt/msg00331.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62030 --- Comment #3 from Andrew Pinski --- (In reply to vries from comment #2) > I think the test-case is reading an undefined value from n->next, but that's > easy enough to fix with an intializer for node. Since node is a global variable, it is zero initialized so there is no reading from an uninitialized area.