From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 18037 invoked by alias); 31 Dec 2004 00:41:01 -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 18021 invoked from network); 31 Dec 2004 00:40:56 -0000 Received: from unknown (HELO nevyn.them.org) (66.93.172.17) by sourceware.org with SMTP; 31 Dec 2004 00:40:56 -0000 Received: from drow by nevyn.them.org with local (Exim 4.34 #1 (Debian)) id 1CkAqV-0004Up-JM; Thu, 30 Dec 2004 19:40:47 -0500 Date: Fri, 31 Dec 2004 00:41:00 -0000 From: Daniel Jacobowitz To: Adam Richard Cc: gdb@sources.redhat.com Subject: Re: warning: Unable to find dynamic linker breakpoint function Message-ID: <20041231004046.GA17098@nevyn.them.org> Mail-Followup-To: Adam Richard , gdb@sources.redhat.com References: <1104355984.41d322909c42d@webmail.unb.ca> <20041229214406.GA5135@nevyn.them.org> <1104453359.41d49eef5093e@webmail.unb.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1104453359.41d49eef5093e@webmail.unb.ca> User-Agent: Mutt/1.5.5.1+cvs20040105i X-SW-Source: 2004-12/txt/msg00139.txt.bz2 On Thu, Dec 30, 2004 at 08:35:59PM -0400, Adam Richard wrote: > Quoting Daniel Jacobowitz : > > > On Wed, Dec 29, 2004 at 05:33:04PM -0400, Adam Richard wrote: > > > I wonder if someone knows what the following warning means? It appears whenever I > > use > > > the "run" command to start my program: > > > > > > (gdb) run > > > Starting program: /home/adam/programming/programs/meals/meals > > > warning: Unable to find dynamic linker breakpoint function. > > > GDB will be unable to debug shared library initializers > > > and track explicitly loaded dynamic code. > > > > > > I found a few posts related to it but few people seem to know what the warning > > message > > > itself means. > > > > It means exactly what it says - GDB could not set the breakpoint that > > it uses for tracking things like dlopen(). > > > > I can't guess at causes, since you didn't tell us what your platform > > is. > > Actually, the error message isn't really clear - I just looked up what dlopen does, but > I don't see what it has to do with breakpoints. As to my platform, I'm using Gentoo Nothing, on its own. GDB uses a breakpoint to be able to support debugging programs which use dlopen. > Linux, kernel 2.6.9, on an AMD Athlon XP processor. I read somewhere that it might > have to do with a stripped gdb but I don't understand why I can't have a stripped gdb > so I'm hoping for an explanation. Not a stripped GDB, a stripped dynamic linker (/lib/ld-linux.so.2). -- Daniel Jacobowitz