From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-11441-listarch-gdb=sources.redhat.com@sources.redhat.com>
Received: (qmail 3255 invoked by alias); 6 Dec 2002 00:31:57 -0000
Mailing-List: contact gdb-help@sources.redhat.com; run by ezmlm
Precedence: bulk
List-Subscribe: <mailto:gdb-subscribe@sources.redhat.com>
List-Archive: <http://sources.redhat.com/ml/gdb/>
List-Post: <mailto:gdb@sources.redhat.com>
List-Help: <mailto:gdb-help@sources.redhat.com>, <http://sources.redhat.com/ml/#faqs>
Sender: gdb-owner@sources.redhat.com
Received: (qmail 3226 invoked from network); 6 Dec 2002 00:31:55 -0000
Received: from unknown (HELO duracef.shout.net) (204.253.184.12)
  by sources.redhat.com with SMTP; 6 Dec 2002 00:31:55 -0000
Received: (from mec@localhost)
	by duracef.shout.net (8.11.6/8.11.6) id gB60Vt517871
	for gdb@sources.redhat.com; Thu, 5 Dec 2002 18:31:55 -0600
Date: Thu, 05 Dec 2002 16:31:00 -0000
From: Michael Elizabeth Chastain <mec@shout.net>
Message-Id: <200212060031.gB60Vt517871@duracef.shout.net>
To: gdb@sources.redhat.com
Subject: Namespaces with gcc v3 stabs+?
X-SW-Source: 2002-12/txt/msg00100.txt.bz2

Question for Daniel J or David C or Kevin B or anybody who knows
about v3 and stabs support ...

I'm looking at disimprovements from gcc v2 to gcc v3.  One of the
issues is that gcc 2.95.3 / stabs+ emits stab information
for symbols in namespaces, but gcc 3.2.1 / stabs+ emits the stab
information with the wrong name.

Here is a test program:

  namespace AAA
  {
    char mychar;
  }

Here is the output with gcc 2.95.3:

  # gcc 2.95.3, -gstabs+, native i686-pc-linux-gnu
  .stabs "_3AAA.mychar:G(0,2)",32,0,3,0
  .globl _3AAA.mychar
  .bss
	  .type    _3AAA.mychar,@object
	  .size    _3AAA.mychar,1
  _3AAA.mychar:
	  .zero   1

And here is the output with gcc 3.2.1:

  # gcc 3.2.1, -gstabs+, native i686-pc-linux-gnu
  .globl _ZN3AAA6mycharE
	  .bss
	  .type   _ZN3AAA6mycharE,@object
	  .size   _ZN3AAA6mycharE,1
  _ZN3AAA6mycharE:
	  .zero   1
	  .stabs  "mychar:G(0,2)",32,0,3,0

Notice how the stab refers to "mychar", not "_ZN3AAA6mycharE".

The output is similar with gcc 3.0.4, gcc 3.1, gcc 3.1.1, gcc 3.2,
and gcc HEAD%20021203.

Is this ringing any bells?

Kevin B had a similar issue in May 2002:

  http://gcc.gnu.org/ml/gcc-patches/2002-11/msg01661.html

I would like to file a bug report against gcc, and then change
the test script gdb.c++/namespace.exp to XFAIL the test with
stabs+ format and v3 (or later) compilers.

Michael C