From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14350 invoked by alias); 27 May 2012 21:05:41 -0000 Received: (qmail 14335 invoked by uid 22791); 27 May 2012 21:05:40 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED,TW_CX X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sun, 27 May 2012 21:05:28 +0000 From: "mikpe at it dot uu.se" To: gcc-bugs@gcc.gnu.org Subject: [Bug bootstrap/53343] [4.8 regression] options.c:9944:1: error: no previous prototype for 'common_handle_option_auto' breaks bootstrap Date: Sun, 27 May 2012 22:07:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: bootstrap X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: mikpe at it dot uu.se X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2012-05/txt/msg02608.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53343 --- Comment #4 from Mikael Pettersson 2012-05-27 21:05:27 UTC --- (In reply to comment #3) > >--disable-build-poststage1-with-cxx > > Is there a reason why you are using this option? Yes, 1. It's a valid option, and it doesn't disable any functionality in the final compiler. 2. Bootstrapping in C++ mode has been reported to increase bootstrap time, I don't have any numbers, but this was mentioned last year around the time the default was changed. As I bootstrap more or less continuously on fairly underpowered boxes (arm, m68k, even my dual-cpu sparc64 SunBlade2500 is too slow compared to my x86 boxes), I don't want to spend cycles (and generate heat) on something that is of no value to me. 3. The C++ FE has repeatedly failed to warn on some forms of code that the C FE does warn about, allowing dodgy (for a C-centric definition of dodgy) code to enter the gcc code base. Bootstrapping in C mode ensures that such regressions are detected.