From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23606 invoked by alias); 7 Oct 2011 21:50:30 -0000 Received: (qmail 23597 invoked by uid 22791); 7 Oct 2011 21:50:29 -0000 X-SWARE-Spam-Status: No, hits=-2.9 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 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; Fri, 07 Oct 2011 21:50:15 +0000 From: "joseph at codesourcery dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug other/50647] gcc/system.h: wrong prototype for sbrk Date: Fri, 07 Oct 2011 21:50:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: other X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: joseph at codesourcery dot com 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: 2011-10/txt/msg00552.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50647 --- Comment #3 from joseph at codesourcery dot com 2011-10-07 21:49:58 UTC --- In general the declarations in system.h are expected to be used only for very archaic hosts that do not have prototypes in their system headers. For such hosts, int is probably the right argument type; this prototype should never be used for modern hosts. As such, the prototype should probably remain unchanged; no host that actually has intptr_t should ever see it. The problem would be that the declaration was not detected; we need more details of the host (including whether you were e.g. building natively or building a Canadian cross). AC_USE_SYSTEM_EXTENSIONS should already ensure all appropriate feature test macros are defined for known hosts.