From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20003 invoked by alias); 30 Nov 2004 00:15:04 -0000 Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-owner@gcc.gnu.org Received: (qmail 19943 invoked from network); 30 Nov 2004 00:14:59 -0000 Received: from unknown (HELO Cantor.suse.de) (195.135.220.2) by sourceware.org with SMTP; 30 Nov 2004 00:14:59 -0000 Received: from hermes.suse.de (hermes-ext.suse.de [195.135.221.8]) (using TLSv1 with cipher EDH-RSA-DES-CBC3-SHA (168/168 bits)) (No client certificate requested) by Cantor.suse.de (Postfix) with ESMTP id A33E7119303A; Tue, 30 Nov 2004 01:14:58 +0100 (CET) To: terra@gnome.org (Morten Welinder) Cc: gcc@gcc.gnu.org Subject: Re: INT_MIN % -1 References: <20041129215914.A03FC1422D5B@darter.rentec.com> From: Andreas Schwab X-Yow: Yow! I forgot my PAIL!! Date: Tue, 30 Nov 2004 00:45:00 -0000 In-Reply-To: <20041129215914.A03FC1422D5B@darter.rentec.com> (Morten Welinder's message of "Mon, 29 Nov 2004 16:59:14 -0500 (EST)") Message-ID: User-Agent: Gnus/5.110002 (No Gnus v0.2) Emacs/21.3.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-SW-Source: 2004-11/txt/msg01180.txt.bz2 terra@gnome.org (Morten Welinder) writes: > gcc 3.4 on solaris/sparc seems to get zero; gcc 3.3.1 on linux gives me a > crash at runtime. (Because the signed integer division instruction traps > as documented.) FWIW, on m68k you'll get -1 (because the divs insn does not modify the operands on overflow and doesn't trap either). Andreas. -- Andreas Schwab, SuSE Labs, schwab@suse.de SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."