From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 15062 invoked by alias); 4 Apr 2012 09:01:17 -0000 Received: (qmail 15052 invoked by uid 22791); 4 Apr 2012 09:01:16 -0000 X-SWARE-Spam-Status: No, hits=-4.8 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,KHOP_RCVD_TRUST,KHOP_THREADED,RCVD_IN_DNSWL_LOW,RCVD_IN_HOSTKARMA_YE X-Spam-Check-By: sourceware.org Received: from mail-iy0-f175.google.com (HELO mail-iy0-f175.google.com) (209.85.210.175) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 04 Apr 2012 09:01:04 +0000 Received: by iaag37 with SMTP id g37so49792iaa.20 for ; Wed, 04 Apr 2012 02:01:03 -0700 (PDT) MIME-Version: 1.0 Received: by 10.42.159.202 with SMTP id m10mr9405562icx.50.1333530063467; Wed, 04 Apr 2012 02:01:03 -0700 (PDT) Received: by 10.42.228.200 with HTTP; Wed, 4 Apr 2012 02:01:03 -0700 (PDT) In-Reply-To: <20120404075142.GA69279@adacore.com> References: <201204040936.52315.ebotcazou@adacore.com> <20120404075142.GA69279@adacore.com> Date: Wed, 04 Apr 2012 09:01:00 -0000 Message-ID: Subject: Re: [4.5/Ada] Fix build with 4.6 compiler From: Richard Guenther To: Arnaud Charlet Cc: Eric Botcazou , gcc-patches@gcc.gnu.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-IsSubscribed: yes Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org X-SW-Source: 2012-04/txt/msg00175.txt.bz2 On Wed, Apr 4, 2012 at 9:51 AM, Arnaud Charlet wrote: >> Arno, do you have objections to me applying the attached patch to the 4.5 >> branch? =A0It makes it possible to build (and bootstrap) the Ada compile= r on the >> 4.5 branch (oldest supported branch) with the 4.6 compiler, which is now= the >> system compiler in recent Linux distributions. > > Well, we don't guarantee such compatibility in general, > so I'd like to make it clear that people shouldn't expect this combination > to work, and if more complex patches are submitted, we'll likely NOT > integrate them. Maybe you should start to do that though. Otherwise you'll simply lose the easy (but not required) testing of Ada when I (or others) backport changes to still maintained branches on machines where the system Ada compiler is newer than the oldest maintained branch. So - it's all for your own benefit ;) [you can think of using a new -we-are-building-gcc switch for the compile where you'd enable some backward compatibility or so] Thanks, Richard.