From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-12240-listarch-gdb=sources.redhat.com@sources.redhat.com>
Received: (qmail 21254 invoked by alias); 1 Feb 2003 17:12:15 -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 21245 invoked from network); 1 Feb 2003 17:12:14 -0000
Received: from unknown (HELO crack.them.org) (65.125.64.184)
  by 172.16.49.205 with SMTP; 1 Feb 2003 17:12:14 -0000
Received: from nevyn.them.org ([66.93.61.169] ident=mail)
	by crack.them.org with asmtp (Exim 3.12 #1 (Debian))
	id 18f34b-0006vv-00; Sat, 01 Feb 2003 13:13:06 -0600
Received: from drow by nevyn.them.org with local (Exim 3.36 #1 (Debian))
	id 18f1CB-0007lO-00; Sat, 01 Feb 2003 12:12:47 -0500
Date: Sat, 01 Feb 2003 17:12:00 -0000
From: Daniel Jacobowitz <drow@mvista.com>
To: jlm <jsado_sc1@earthlink.net>
Cc: gdb@sources.redhat.com
Subject: Re: Backtrace not giving meaningful info
Message-ID: <20030201171246.GC29662@nevyn.them.org>
Mail-Followup-To: jlm <jsado_sc1@earthlink.net>, gdb@sources.redhat.com
References: <1044113934.7232.24.camel@PC2>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1044113934.7232.24.camel@PC2>
User-Agent: Mutt/1.5.1i
X-SW-Source: 2003-02/txt/msg00013.txt.bz2

On Sat, Feb 01, 2003 at 10:38:52AM -0500, jlm wrote:
> I'm using gdb 5.3 to debug a C++ program that has been compiled with gcc
> 3.2 using the -gdwarf-2 -g3 flags. I can reliably make my program crash,
> and at that point, I want to know where my program crashed at, so I do a
> backtrace:
> 
> (gdb) bt
> #0  0x4007cbd8 in ?? ()
> #1  0x4007b208 in ?? ()
> #2  0x40079560 in ?? ()
> #3  0x4008e300 in ?? ()
> #4  0x4008d44c in ?? ()
> #5  0x4008e9f7 in ?? ()
> #6  0x4006da3f in ?? ()
> #7  0x4006d25a in ?? ()
> #8  0x40082a2b in ?? ()
> #9  0x4008fc30 in ?? ()
> #10 0x4008fa6f in ?? ()
> #11 0x408d12c3 in
> Glib::SignalProxyNormal::slot0_void_callback(_GObject*, void*)
> (self=0x818d180, data=0xbfffd764) at signalproxy.cc:101
> 
> I have two questions. One, why doesn't the backtrace go all the way back
> to main()? Two, what must I do in order to get some more meaningful
> information in the backtrace? The ?? doesn't help me much.

Not enough information.  You need to figure out where those addresses
actually are; are they in a shared library somewhere?  Try "info
shared".

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer