From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14366 invoked by alias); 22 Feb 2013 13:09:43 -0000 Received: (qmail 12693 invoked by uid 48); 22 Feb 2013 13:09:15 -0000 From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug sanitizer/55309] gcc's address-sanitizer 66% slower than clang's Date: Fri, 22 Feb 2013 13:09:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: sanitizer X-Bugzilla-Keywords: X-Bugzilla-Severity: enhancement X-Bugzilla-Who: jakub 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 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: 2013-02/txt/msg02222.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55309 --- Comment #46 from Jakub Jelinek 2013-02-22 13:09:10 UTC --- (In reply to comment #43) > 400.perlbench fails with a global-buffer-overflow which clang does not detect. > I did not investigate why. It could be a gcc false positive or clang false > negative. On which file/function the global-buffer-overflow was? Can you send me the asan diagnostics? > 464.h264ref is VERY slow, I did not look why. And it didn't fail on that: for (dd=d[k=0]; k<16; dd=d[++k]) { satd += (dd < 0 ? -dd : dd); } or have you fixed that up in your SPEC sources?