From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 33420 invoked by alias); 6 Jun 2015 23:38:42 -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 Received: (qmail 33376 invoked by uid 48); 6 Jun 2015 23:38:37 -0000 From: "sebastiano.vigna at unimi dot it" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/66348] Simple loop never exits with -O1, exits with -O0 Date: Sat, 06 Jun 2015 23:38:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 4.9.2 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: sebastiano.vigna at unimi dot it X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-06/txt/msg00598.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66348 --- Comment #12 from Sebastiano Vigna --- BTW, to further restrict the search I'm trying to replicate the bug with -fsanitize=address, or at least to get to the problematic call under -fsanitize=address, but it'll take a while. I have to recompile the gcc suite, as the current version of libasan does not allocate more than 64GB (in Fedora, libasan is built with gcc).