From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21003 invoked by alias); 5 Dec 2010 01:55:13 -0000 Received: (qmail 20993 invoked by uid 22791); 5 Dec 2010 01:55:12 -0000 X-SWARE-Spam-Status: No, hits=-2.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 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; Sun, 05 Dec 2010 01:55:08 +0000 From: "cstankevitz at toyon dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/46806] New: -O3 implies 0 <= 8 <= 7 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: cstankevitz at toyon dot com 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: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Date: Sun, 05 Dec 2010 01:55:00 -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 X-SW-Source: 2010-12/txt/msg00446.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46806 Summary: -O3 implies 0 <= 8 <= 7 Product: gcc Version: 4.5.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned@gcc.gnu.org ReportedBy: cstankevitz@toyon.com Host: Linux seymour.toyon.corp 2.6.35.6-48.fc14.x86_64 #1 SMP Fri Oct 22 15:36:08 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux Build: g++ (GCC) 4.5.1 20100924 (Red Hat 4.5.1-4) Created attachment 22636 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22636 sample program Linux seymour.toyon.corp 2.6.35.6-48.fc14.x86_64 #1 SMP Fri Oct 22 15:36:08 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux g++ (GCC) 4.5.1 20100924 (Red Hat 4.5.1-4) Compile the attached source with "g++ test.cpp -O3" and the executable will report 0<=8<=7. To make the strange result go away: - comment out the do-nothing line gValue = EdgeType (or make a number of other minor changes) - compile with -O1