From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4444 invoked by alias); 10 Dec 2006 20:53:25 -0000 Received: (qmail 4430 invoked by uid 22791); 10 Dec 2006 20:53:22 -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; Sun, 10 Dec 2006 20:53:16 +0000 Received: from drow by nevyn.them.org with local (Exim 4.63) (envelope-from ) id 1GtVfe-0000i5-4Z; Sun, 10 Dec 2006 15:53:14 -0500 Date: Sun, 10 Dec 2006 20:53:00 -0000 From: Daniel Jacobowitz To: Nick Roberts Cc: gdb@sources.redhat.com Subject: Re: memory address ranges (-var-create) Message-ID: <20061210205314.GA2660@nevyn.them.org> Mail-Followup-To: Nick Roberts , gdb@sources.redhat.com References: <17788.28864.16294.719219@kahikatea.snap.net.nz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <17788.28864.16294.719219@kahikatea.snap.net.nz> User-Agent: Mutt/1.5.13 (2006-08-11) X-IsSubscribed: yes Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2006-12/txt/msg00077.txt.bz2 On Mon, Dec 11, 2006 at 09:40:32AM +1300, Nick Roberts wrote: > For > > -var-create - * EXPRESSION > > the manual says EXPRESSION may be: > > * `*ADDR-ADDR' -- a memory address range (TBD) Weird. That doesn't seem like a good idea, as you found. > I would like to detect when a string value changes which presumably means > watching a memory address range. Currently a variable object for a string > will only detect that the address has changed or the first character > (the child). > > I see that watch expressions do the right thing in Insight, from which the > variable object code has apparently been taken. Can this code be adapted > for -var-create? Would it work for your front end to create a varobj for "(char[7] *) str" where it computes the length itself? (gdb) p *(char[7] *) rl_prompt $13 = "(gdb) " If that's what you want, we might be able to come up with a smarter way to handle the special string case, or do it automatically. -- Daniel Jacobowitz CodeSourcery