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From: Andreas Schwab <schwab@suse.de>
To: gdb@sourceware.org
Cc: gdb Mailing List <gdb@sources.redhat.com>
Subject: Re: How to watch for changes in a location of memory
References: <20080808081041.GA32701@geppetto> 	<d557d0790808080137i56dfeabai6a4ab6c1abcf7a95@mail.gmail.com> 	<20080808091156.GA8935@geppetto>
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Date: Fri, 08 Aug 2008 12:48:00 -0000
In-Reply-To: <20080808091156.GA8935@geppetto> (Stefano Sabatini's message of 	"Fri, 8 Aug 2008 11:11:56 +0200")
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Stefano Sabatini <stefano.sabatini-lala@poste.it> writes:

> On date Friday 2008-08-08 10:37:50 +0200, Eran Ifrah wrote:
>> You might want to try the 'watch' command which will causes gdb to
>> break whenever the memory at a given addr has been modified
>> 
>> Read here for more details:
>> 
>> http://sources.redhat.com/gdb/current/onlinedocs/gdb_6.html#SEC34
>
> Thank you for the good pointer, yes indeed it seems it does what I
> want, which is basically:
> watch &ctx->foo;

This is equivalent to `watch ctx', since the address of ctx->foo can
only change if ctx changes.  Watching an address of something is
generally not usefull.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
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