From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-29216-listarch-gdb=sources.redhat.com@sourceware.org>
Received: (qmail 7597 invoked by alias); 30 Jul 2007 19:47:16 -0000
Received: (qmail 7589 invoked by uid 22791); 30 Jul 2007 19:47:16 -0000
X-Spam-Check-By: sourceware.org
Received: from romy.inter.net.il (HELO romy.inter.net.il) (213.8.233.24)     by sourceware.org (qpsmtpd/0.31) with ESMTP; Mon, 30 Jul 2007 19:47:11 +0000
Received: from HOME-C4E4A596F7 (IGLD-83-130-217-159.inter.net.il [83.130.217.159]) 	by romy.inter.net.il (MOS 3.7.3-GA) 	with ESMTP id IMV84763 (AUTH halo1); 	Mon, 30 Jul 2007 22:46:40 +0300 (IDT)
Date: Mon, 30 Jul 2007 21:16:00 -0000
Message-Id: <umyxdd68r.fsf@gnu.org>
From: Eli Zaretskii <eliz@gnu.org>
To: "ying lcs" <yinglcs@gmail.com>
CC: gdb@sourceware.org
In-reply-to: <568e62a40707292020j4e53d480je8822ac6f37f4eda@mail.gmail.com> 	(yinglcs@gmail.com)
Subject: Re: Can i set a breakpoint when a member of a C struct is being assigned?
Reply-to: Eli Zaretskii <eliz@gnu.org>
References:  <568e62a40707292020j4e53d480je8822ac6f37f4eda@mail.gmail.com>
X-IsSubscribed: yes
Mailing-List: contact gdb-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb.sourceware.org>
List-Subscribe: <mailto:gdb-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb/>
List-Post: <mailto:gdb@sourceware.org>
List-Help: <mailto:gdb-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-owner@sourceware.org
X-SW-Source: 2007-07/txt/msg00210.txt.bz2

> Date: Sun, 29 Jul 2007 22:20:58 -0500
> From: "ying lcs" <yinglcs@gmail.com>
> 
> Can i set a breakpoint when a member of a C struct is being assigned?
> 
> For example, i have a C struct in my code:
> struct myStruct{
>    int type;
> };
> 
> How can I break my debugging program when I have code like this:
> 
> myStruct*  p;
> 
> p->type = 10;

Like this:

 (gdb) watch p->type

(If `p' is a local (as opposed to static) variable, you need to do
this when `p' is in scope.