From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 29049 invoked by alias); 5 Jul 2002 21:28:52 -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 29028 invoked from network); 5 Jul 2002 21:28:50 -0000 Received: from unknown (HELO dragon.nuxi.com) (66.92.13.169) by sources.redhat.com with SMTP; 5 Jul 2002 21:28:50 -0000 Received: from dragon.nuxi.com (obrien@localhost [127.0.0.1]) by dragon.nuxi.com (8.12.5/8.12.2) with ESMTP id g65LSfoi018259; Fri, 5 Jul 2002 14:28:41 -0700 (PDT) (envelope-from obrien@dragon.nuxi.com) Received: (from obrien@localhost) by dragon.nuxi.com (8.12.5/8.12.5/Submit) id g65LScls018258; Fri, 5 Jul 2002 14:28:38 -0700 (PDT) Date: Fri, 05 Jul 2002 14:46:00 -0000 From: "David O'Brien" To: Mark Mitchell Cc: Andreas Jaeger , "gcc@gcc.gnu.org" , Gerald Pfeifer Subject: Re: C++ binary compatibility between GCC 3.1 and GCC 3.2? Message-ID: <20020705142838.C89951@dragon.nuxi.com> Reply-To: obrien@FreeBSD.org References: <18910000.1025898677@gandalf.codesourcery.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <18910000.1025898677@gandalf.codesourcery.com>; from mark@codesourcery.com on Fri, Jul 05, 2002 at 12:51:17PM -0700 X-Operating-System: FreeBSD 5.0-CURRENT Organization: The NUXI BSD group X-Pgp-Rsa-Fingerprint: B7 4D 3E E9 11 39 5F A3 90 76 5D 69 58 D9 98 7A X-Pgp-Rsa-Keyid: 1024/34F9F9D5 X-SW-Source: 2002-07/txt/msg00239.txt.bz2 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. 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. -- -- David (obrien@FreeBSD.org)