From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 3346 invoked by alias); 6 Apr 2006 01:17:36 -0000 Received: (qmail 3337 invoked by uid 22791); 6 Apr 2006 01:17:36 -0000 X-Spam-Check-By: sourceware.org Received: from nevyn.them.org (HELO nevyn.them.org) (66.93.172.17) by sourceware.org (qpsmtpd/0.31.1) with ESMTP; Thu, 06 Apr 2006 01:17:35 +0000 Received: from drow by nevyn.them.org with local (Exim 4.54) id 1FRJ7s-0003MC-Ul for gdb@sources.redhat.com; Wed, 05 Apr 2006 21:17:33 -0400 Date: Thu, 06 Apr 2006 01:17:00 -0000 From: Daniel Jacobowitz To: gdb@sources.redhat.com Subject: Re: text file formats Message-ID: <20060406011732.GA12814@nevyn.them.org> Mail-Followup-To: gdb@sources.redhat.com References: <20060405223122.GB11610@brasko.net> <20060405233938.GA11013@nevyn.them.org> <20060406001455.GC11610@brasko.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060406001455.GC11610@brasko.net> User-Agent: Mutt/1.5.8i X-IsSubscribed: yes Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2006-04/txt/msg00044.txt.bz2 On Wed, Apr 05, 2006 at 08:14:55PM -0400, Bob Rossi wrote: > OK, so now I'm confused. If the user looks at the text file through my > viewer, and set's a breakpoint at line 100, how can I be sure it's the > same 100 that GDB will actually set a breakpoint at? Obviously this > works for unix and dos file formats. But from the algorithm you stated > above, it doesn't look like GDB will work with mac file formats. > > I mean, the C library on unix won't be able to read a file that was > created on a mac (at least with the mac file format). The manual algorithm is only used while searching. It will work on any file format recognized by the C library. The C library is generally used. If you want to handle a text file, including a source file, it had better be in the native format. Full stop. I don't think any recent version of MacOS uses the old \r format, anyway? I thought OSX had switched to the Unix convention. > Is GDB responsible for mapping the file line numbers to the actual lines? > or is this the responsibility of GCC via the debug info? For instance, > if foo () is defined at line 100 according to gcc and 101 according to > GDB, does CGDB have to think foo () is at line 100 or 101? I have no idea what you mean. GDB gets line numbers from debug info, of course; where else would it get them? -- Daniel Jacobowitz CodeSourcery