From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7587 invoked by alias); 3 Jan 2012 10:18:31 -0000 Received: (qmail 7576 invoked by uid 22791); 3 Jan 2012 10:18:30 -0000 X-SWARE-Spam-Status: No, hits=-2.9 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; Tue, 03 Jan 2012 10:18:17 +0000 From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/51721] -Warray-bounds false positives and inconsistencies Date: Tue, 03 Jan 2012 10:18:00 -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-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: jakub 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: 2012-01/txt/msg00216.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51721 --- Comment #6 from Jakub Jelinek 2012-01-03 10:18:12 UTC --- http://gcc.gnu.org/ml/gcc-patches/2012-01/msg00046.html Deferring for 4.8. We should also add ASSERT_EXPRs e.g. for unsigned int x; int D.1234; D.1234_2 = (int) x_1(D); if (D.1234_2 < 0) (saying that x_1 has range [__INT_MAX__+1, -1U] if true and [0, __INT_MAX__] if false and perhaps for if ((x & 0x80000000)) kind of tests.