From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 13827 invoked by alias); 30 Aug 2012 13:24:09 -0000 Received: (qmail 13816 invoked by uid 22791); 30 Aug 2012 13:24:08 -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; Thu, 30 Aug 2012 13:23:55 +0000 From: "glaw@undo-software.com" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/54365] ARM optimization bug when pointer arithmetic wraps Date: Thu, 30 Aug 2012 13:24:00 -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-Keywords: X-Bugzilla-Severity: major X-Bugzilla-Who: glaw@undo-software.com X-Bugzilla-Status: RESOLVED 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: 2012-08/txt/msg01981.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54365 --- Comment #5 from Greg Law 2012-08-30 13:23:54 UTC --- -fwrapv doesn't appear to make a difference: $ gcc compilerbug.c $ ./a.out it wraps $ gcc -O2 compilerbug.c $ ./a.out no wrap $ gcc -O2 -fwrapv compilerbug.c $ ./a.out no wrap $