From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-26934-listarch-gdb=sources.redhat.com@sourceware.org>
Received: (qmail 32418 invoked by alias); 27 Nov 2006 15:08:33 -0000
Received: (qmail 32408 invoked by uid 22791); 27 Nov 2006 15:08:32 -0000
X-Spam-Check-By: sourceware.org
Received: from ns.suse.de (HELO mx1.suse.de) (195.135.220.2)     by sourceware.org (qpsmtpd/0.31) with ESMTP; Mon, 27 Nov 2006 15:08:23 +0000
Received: from Relay1.suse.de (mail2.suse.de [195.135.221.8]) 	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) 	(No client certificate requested) 	by mx1.suse.de (Postfix) with ESMTP id 3AF0E122E2; 	Mon, 27 Nov 2006 16:08:21 +0100 (CET)
Date: Mon, 27 Nov 2006 15:08:00 -0000
From: Marcus Meissner <meissner@suse.de>
To: Oliver Block <lists@block-online.eu>
Cc: gdb@sourceware.org, suse-programming-e@suse.com
Subject: Re: [opensuse-programming] lib failure?
Message-ID: <20061127150821.GA9975@suse.de>
References: <200611271557.09413.lists@block-online.eu>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <200611271557.09413.lists@block-online.eu>
User-Agent: Mutt/1.5.9i
Mailing-List: contact gdb-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb.sourceware.org>
List-Subscribe: <mailto:gdb-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb/>
List-Post: <mailto:gdb@sourceware.org>
List-Help: <mailto:gdb-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-owner@sourceware.org
X-SW-Source: 2006-11/txt/msg00179.txt.bz2

On Mon, Nov 27, 2006 at 03:57:43PM +0100, Oliver Block wrote:
> Hello,
> 
> I was facing a problem with a functio I wrote, checking if a file exists 
> withing the fs. When I was debuggin that , I set 2 breakpoints, the first to 
> the function file_exists and the second to the function call of file_exists 
> inside the program. I got the following output
> 
> **************************** gdb ************************************
> Breakpoint 2, main (argc=1, argv=0xbffff1c4) at ddnscli.c:712
> 712        if(file_exists(lockfile))
> (gdb) s
> 
> Breakpoint 1, file_exists (fname=0xbffff110 "disabled") at ddnscli.c:689
> 689        if( (rval = stat( fname, &attribut)) == -1)
> (gdb) s
> __stat (file=0xbffff070 "\200", buf=0xbffff070) at stat.c:51
> 51      stat.c: Datei oder Verzeichnis nicht gefunden.
>         in stat.c
> (gdb) bt full
> #0  __stat (file=0xbffff070 "\200", buf=0xbffff070) at stat.c:51
> No locals.
> #1  0x0804a56b in file_exists (fname=0xbffff110 "disabled") at ddnscli.c:689
>         attribut = {st_dev = 128, __pad1 = 34760, st_ino = 7, st_mode = 53,
>   st_nlink = 1075277812, st_uid = 1075283840, st_gid = 134522768,
>   st_rdev = 4615200421588234412, __pad2 = 34688, st_size = 40,
>   st_blksize = 1075277812, st_blocks = 1073835200, st_atime = 134522768,
>   st_atimensec = 3221221564, st_mtime = 1074560382, st_mtimensec = 40,
>   st_ctime = 1075277812, st_ctimensec = 3221221592, __unused4 = 1074559989,
>   __unused5 = 40}
>         rval = 1075277812
> *************************************************************************************
> 
> __stat (file=0xbffff070 "\200", buf=0xbffff070) at stat.c:51
> 
> both arguments of stat hold the same address. file should be AFAIK 
> fname=0xbffff110.
> 
> I isolated the function to a test_program and it works fine there.
> 
> Any ideas?

Showing us the actual source of the function would perhaps help.

Ciao, Marcus