From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 28213 invoked by alias); 21 Oct 2003 12:52:00 -0000 Mailing-List: contact gdb-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sources.redhat.com Received: (qmail 28204 invoked from network); 21 Oct 2003 12:51:59 -0000 Received: from unknown (HELO nevyn.them.org) (66.93.172.17) by sources.redhat.com with SMTP; 21 Oct 2003 12:51:59 -0000 Received: from drow by nevyn.them.org with local (Exim 4.24 #1 (Debian)) id 1ABvzO-0005WG-Kz; Tue, 21 Oct 2003 08:51:54 -0400 Date: Tue, 21 Oct 2003 12:52:00 -0000 From: Daniel Jacobowitz To: Marc Gonzalez-Sigler Cc: gdb@sources.redhat.com Subject: Re: gdb steps into glibc functions Message-ID: <20031021125154.GA21053@nevyn.them.org> Mail-Followup-To: Marc Gonzalez-Sigler , gdb@sources.redhat.com References: <3F950EE1.6050204@inria.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3F950EE1.6050204@inria.fr> User-Agent: Mutt/1.5.1i X-SW-Source: 2003-10/txt/msg00232.txt.bz2 On Tue, Oct 21, 2003 at 12:48:01PM +0200, Marc Gonzalez-Sigler wrote: > Hi all, > > I have the following system: > > $ uname -a > Linux ikaria 2.4.16 #1 Wed Jan 9 15:04:38 CET 2002 i686 unknown > > $ gdb -v > GNU gdb 5.0rh-5 Red Hat Linux 7.1 > Copyright 2001 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and > you are > welcome to change it and/or distribute copies of it under certain > conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for > details. > This GDB was configured as "i386-redhat-linux". > > When I use the step command in gdb, it seems that gdb tries to step > into glibc functions. > > > 325 a2b = (strcmp (progname, "ir_a2b") == 0); > (gdb) step > strcmp (p1=0xbfffface "ir_b2a", p2=0x80ed99f "ir_a2b") at > ../sysdeps/generic/strcmp.c:33 > 33 ../sysdeps/generic/strcmp.c: No such file or directory. > in ../sysdeps/generic/strcmp.c > Current language: auto; currently c > > > This does not happen on my home computer: even when I use the step > command, gdb steps over glibc calls. > > Does it mean that glibc was compiled with debugging information on > this Redhat system? And gdb complains because it cannot find the > source code? Yep. > If this is the case, then I would obtain the behavior I am used to > as soon as I use a version of glibc which was compiled without > debugging information, no? Could I just strip the library? Yep. Or you could "set auto-solib-add 0" if you don't need to debug threads or any other functions in shared libraries; that'll do it too. > One last question: once I enter a function, say, strcmp(), is finish > the correct command to jump out of the function? That's right. -- Daniel Jacobowitz MontaVista Software Debian GNU/Linux Developer