X-Recipient: archive-cygwin AT delorie DOT com
X-Spam-Check-By: sourceware.org
Date: Mon, 15 Oct 2007 11:19:47 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: [gdb] Data watchpoints in Windows weirdness.  Call for testers.
Message-ID: <20071015091947.GS20400@calimero.vinschen.de>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <4702E6B7 DOT 8020100 AT portugalmail DOT pt> <20071008124331 DOT GD19254 AT calimero DOT vinschen DOT de> <20071008143552 DOT GA20746 AT ednor DOT casa DOT cgf DOT cx> <47115BEF DOT 7030407 AT portugalmail DOT pt> <ferqrc$ndc$1 AT ger DOT gmane DOT org> <47127845 DOT 5000905 AT portugalmail DOT pt>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <47127845.5000905@portugalmail.pt>
User-Agent: Mutt/1.5.16 (2007-06-09)
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
List-Id: <cygwin.cygwin.com>
List-Unsubscribe: <mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

On Oct 14 21:12, Pedro Alves wrote:
> René Berber wrote:
>
> (...)
>
>> Program received signal SIGTRAP, Trace/breakpoint trap.
>> main () at main.c:18
>> 18	      Sleep (1000);
>> (gdb) p count
>> $3 = 1001
>> (gdb) c
>> Continuing.
>> Hardware watchpoint 2: count
>> Old value = 0
>> New value = 1002
>
> (...)
>
> Thanks!  That clearly shows the exact same problem.
> Somehow, the code in the while(1) loop starts behaving,
> and for the same executable, the symptom manifests exactly
> across machines.  If one tweaks the program a little, the
> problem shows up in different lines.
>
> Could you tell me what version of Windows was that?
>
> I'd be perfect if someone with access to a Windows != XP
> machine could do the same test.

I could reproduce it on Win2K SP4, Vista, and under WOW64 on Vista 64.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/