From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-385314-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 13167 invoked by alias); 4 Mar 2012 20:58:56 -0000
Received: (qmail 13158 invoked by uid 22791); 4 Mar 2012 20:58:55 -0000
X-SWARE-Spam-Status: No, hits=-2.8 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; Sun, 04 Mar 2012 20:58:40 +0000
From: "eu at doxos dot eu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/52485] New: [c++11] add an option to disable c++11 user-defined literals
Date: Sun, 04 Mar 2012 20:58:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Keywords:
X-Bugzilla-Severity: enhancement
X-Bugzilla-Who: eu at doxos dot eu
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: <bug-52485-4@http.gcc.gnu.org/bugzilla/>
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: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2012-03/txt/msg00367.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52485

             Bug #: 52485
           Summary: [c++11] add an option to disable c++11 user-defined
                    literals
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: eu@doxos.eu


Some upstream code (e.g. #50917 for Mozilla, I have issues with Qt4's SLOT(...)
macros) is broken because of the support for c++11 literals in 4.7. In all
cases I've seen the cause was missing space between constructs like #define
FOO(a) "0"#a.

Sine this feature is little used, but lot of code, it would be reasonable to
provide a switch to disable user-defined literals, so that code which needs
c++11 but at the same time links to (technically broken) libs can be compiled,
until those libs get fixed upstream.