From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 22903 invoked by alias); 6 Jul 2002 18:04:26 -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 22887 invoked from network); 6 Jul 2002 18:04:22 -0000 Received: from unknown (HELO dragon.nuxi.com) (66.92.13.169) by sources.redhat.com with SMTP; 6 Jul 2002 18:04:22 -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 g66I4Ioi048758; Sat, 6 Jul 2002 11:04:18 -0700 (PDT) (envelope-from obrien@dragon.nuxi.com) Received: (from obrien@localhost) by dragon.nuxi.com (8.12.5/8.12.5/Submit) id g66I4Hxx048757; Sat, 6 Jul 2002 11:04:17 -0700 (PDT) Date: Sat, 06 Jul 2002 11:44:00 -0000 From: "David O'Brien" To: Gerald Pfeifer Cc: Andreas Jaeger , Mark Mitchell , gcc@gcc.gnu.org Subject: Re: C++ binary compatibility between GCC 3.1 and GCC 3.2? Message-ID: <20020706180417.GA47394@dragon.nuxi.com> Reply-To: obrien@FreeBSD.org References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4i 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/msg00282.txt.bz2 On Sat, Jul 06, 2002 at 03:18:00PM +0200, Gerald Pfeifer wrote: > On Sat, 6 Jul 2002, Andreas Jaeger wrote: > >> 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, > > What's the cut-off date where you (Andreas, David,...) would need to > have a release of GCC with such a C++ ABI change? FreeBSD would need a release with updated C++ ABI by Sept 1, 2002 at the very latest. That also assumes that there aren't major regressions in said release. Example of things that we couldn't have happen with a Sept 1st compiler are things like: * the "#pragma weak" bug that caused stock XFree86 4.2.0 to not compile * the reload bug that could only be avoided by compiling XFree86 with -O0 * that requested alignment isn't obeyed and thus boot blocks can't be made small enough * that with every GCC upgrade we have to tweak our in-line asm statements * anything that would cause 20% of our 8000 3rd-party packages (The Ports Collection) to no longer build.