From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23935 invoked by alias); 4 May 2012 21:54:34 -0000 Received: (qmail 23925 invoked by uid 22791); 4 May 2012 21:54:34 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED 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; Fri, 04 May 2012 21:54:20 +0000 From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/53239] [4.7 Regression] -ftree-vrp breaks min() Date: Fri, 04 May 2012 21:54:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Keywords: 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-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: 2012-05/txt/msg00511.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53239 --- Comment #2 from Andrew Pinski 2012-05-04 21:54:03 UTC --- s_6 = this_5(D)->children_list_; x.4_39 = (long unsigned int) s_6; D.36426_37 = x.4_39 & 6; I think the code is depending on undefined code dealing with alignment requirements on pointers.