From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11463 invoked by alias); 17 Nov 2014 09:29:32 -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 11427 invoked by uid 48); 17 Nov 2014 09:29:28 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/63898] [5 Regression] r217560 caused segfault building 462.libquantum from cpu2006 Date: Mon, 17 Nov 2014 09:29:00 -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-Version: 5.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: 5.0 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: 2014-11/txt/msg01476.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63898 --- Comment #5 from Richard Biener --- Ok, so this is the missing effect of case RDIV_EXPR: /* Don't touch a floating-point divide by zero unless the mode of the constant can represent infinity. */ if (TREE_CODE (arg1) == REAL_CST && !MODE_HAS_INFINITIES (TYPE_MODE (TREE_TYPE (arg1))) && real_zerop (arg1)) return NULL_TREE;