From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1701 invoked by alias); 12 May 2011 10:26:29 -0000 Received: (qmail 1692 invoked by uid 22791); 12 May 2011 10:26:28 -0000 X-SWARE-Spam-Status: No, hits=-2.6 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,TW_TJ 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, 12 May 2011 10:25:42 +0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/48968] incorrect warning about longjmp/vfork clobbering a local (-W -O2, x86-64) 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: rguenth 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 Date: Thu, 12 May 2011 11:07:00 -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: 2011-05/txt/msg01005.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48968 --- Comment #2 from Richard Guenther 2011-05-12 09:11:45 UTC --- Well, XXXevent is scalarized by SRA (-fno-tree-sra gets rid of the error) and I suppose nothing prevents that register to be propagated to other indirect uses. So it might be indeed live over the setjmp call.