From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-236685-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 12535 invoked by alias); 28 Nov 2007 00:53:26 -0000
Received: (qmail 11892 invoked by uid 48); 28 Nov 2007 00:53:07 -0000
Date: Wed, 28 Nov 2007 00:53:00 -0000
Subject: [Bug bootstrap/34255]  New: scope-blocks-on-a-diet patch diverges -g from non-g output code
X-Bugzilla-Reason: CC
Message-ID: <bug-34255-334@http.gcc.gnu.org/bugzilla/>
Reply-To: gcc-bugzilla@gcc.gnu.org
To: gcc-bugs@gcc.gnu.org
From: "aoliva at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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: 2007-11/txt/msg02722.txt.bz2

http://gcc.gnu.org/ml/gcc-patches/2007-07/msg01745.html regresses the property
that code output with -g must be the same as that without -g.  make
bootstrap-debug demonstrates that several files miscompare after this patch,
and don't if the patch is reversed.

The patch not only causes -g divergence, it also accidentally drops subblocks
that need to be kept around for the sake of generating debug information for
them.

Both problems are fixed with the patch at
http://gcc.gnu.org/ml/gcc-patches/2007-10/msg00608.html


-- 
           Summary: scope-blocks-on-a-diet patch diverges -g from non-g
                    output code
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: aoliva at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34255