From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-364826-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 4953 invoked by alias); 5 Aug 2011 06:50:03 -0000
Received: (qmail 4898 invoked by uid 22791); 5 Aug 2011 06:50:01 -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, 05 Aug 2011 06:49:48 +0000
From: "sebastian.huber@embedded-brains.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/38644] [4.4/4.5/4.6/4.7 Regression] Optimization flag -O1 -fschedule-insns2 causes wrong code
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: rtl-optimization
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: sebastian.huber@embedded-brains.de
X-Bugzilla-Status: NEW
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 4.4.7
X-Bugzilla-Changed-Fields:
Message-ID: <bug-38644-4-BqP4FDqOjE@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-38644-4@http.gcc.gnu.org/bugzilla/>
References: <bug-38644-4@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
Date: Fri, 05 Aug 2011 06:50:00 -0000
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: 2011-08/txt/msg00600.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38644

--- Comment #40 from Sebastian Huber <sebastian.huber@embedded-brains.de> 2011-08-05 06:49:00 UTC ---
(In reply to comment #39)
> On Fri, Aug 5, 2011 at 2:33 AM, jiangning.liu at arm dot com
[...]
> > Is it possible you send me your source code exposing the bug first, so I can
> > verify your problem can really be fixed with my local fix?
> 
> I think this is just from the libstdc++ sources - look at that file
> from the build with --with-mode=thumb .

Yes, this is from the libstdc++ sources (4.6.1 20110627,
libstdc++-v3/libsupc++/new_opnt.cc).  You need a non-EABI ARM variant of GCC
since this bug manifestation will only show up in the SJLJ version.