From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4769 invoked by alias); 31 Oct 2011 13:38:57 -0000 Received: (qmail 4684 invoked by uid 22791); 31 Oct 2011 13:38:55 -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; Mon, 31 Oct 2011 13:38:34 +0000 From: "matz at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/50644] ICE in set_is_used added today Date: Mon, 31 Oct 2011 13:38:00 -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: matz 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: 2011-10/txt/msg03208.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50644 --- Comment #18 from Michael Matz 2011-10-31 13:37:33 UTC --- Ah, wrong, native_cpu_up of course calls check_tsc_sync_source, which under LTO can be inlined. So it's the same issues as PR50741, the patch from there works around the issue. Unfortunately with the side-effect of removing the second descriptor object (from check_tsc_sync_source) from the local_decls list of native_cpu_up. This happens also before the patch when the segfault is worked around by source changes (s/__func__/0/), so that's not a regression.