From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19842 invoked by alias); 6 Jul 2002 05:18:30 -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 19832 invoked from network); 6 Jul 2002 05:18:27 -0000 Received: from unknown (HELO Cantor.suse.de) (213.95.15.193) by sources.redhat.com with SMTP; 6 Jul 2002 05:18:27 -0000 Received: from Hermes.suse.de (Charybdis.suse.de [213.95.15.201]) by Cantor.suse.de (Postfix) with ESMTP id C90C814308; Sat, 6 Jul 2002 07:18:26 +0200 (MEST) Received: from aj by arthur.inka.de with local (Exim 3.34 #1) id 17Qhxh-0001Ol-00; Sat, 06 Jul 2002 07:18:25 +0200 Mail-Copies-To: never To: obrien@FreeBSD.org Cc: Mark Mitchell , "gcc@gcc.gnu.org" , Gerald Pfeifer Subject: Re: C++ binary compatibility between GCC 3.1 and GCC 3.2? References: <18910000.1025898677@gandalf.codesourcery.com> <20020705142838.C89951@dragon.nuxi.com> From: Andreas Jaeger Date: Sat, 06 Jul 2002 04:56:00 -0000 In-Reply-To: <20020705142838.C89951@dragon.nuxi.com> ("David O'Brien"'s message of "Fri, 5 Jul 2002 14:28:38 -0700") Message-ID: User-Agent: Gnus/5.090007 (Oort Gnus v0.07) XEmacs/21.4 (Artificial Intelligence, i386-suse-linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-SW-Source: 2002-07/txt/msg00257.txt.bz2 "David O'Brien" writes: > On Fri, Jul 05, 2002 at 12:51:17PM -0700, Mark Mitchell wrote: >> In any case, GCC 3.1 and GCC 3.2 will not be 100% binary compatible >> with respect to the C++ ABI. >> >> I can't say what that might mean as a distributor. > > I can -- MAJOR pain and difficulty. It would probably prevent FreeBSD > using GCC 3.2 in our 5.1 and later 5.x releases. That means 1-2 years > before the compiler can be upgraded for our users. The same for most Linux distributors if they go with 3.1.x - and I know that some will go, including SuSE. > > I urge you as strongly as I can to back port (#define wrap if needed) the > changes so that GCC 3.1.1 can be built to be 100% C++ ABI compatible with > GCC 3.2. FreeBSD can much more easily accept breakage between 3.1[.0] > and 3.1.1, than between 3.1.1 and 3.2[.0] as we are still developing 5.0 > and can take ABI hits right now. The same applies for SuSE and possible also other distributors, Andreas -- Andreas Jaeger SuSE Labs aj@suse.de private aj@arthur.inka.de http://www.suse.de/~aj