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From: Andreas Schwab <schwab@suse.de>
To: gdb@sourceware.org
Subject: Re: Destroying frame caches
References: <jelkeysh3t.fsf@sykes.suse.de> 	<20070605125051.GA9024@caradoc.them.org> 	<jehcpmsg8p.fsf@sykes.suse.de> 	<20070605132547.GA10486@caradoc.them.org>
X-Yow: ALFRED JARRY!  Say something about th' DEATH of DISCO!!
Date: Tue, 05 Jun 2007 13:30:00 -0000
In-Reply-To: <20070605132547.GA10486@caradoc.them.org> (Daniel Jacobowitz's 	message of "Tue\, 5 Jun 2007 09\:25\:47 -0400")
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Daniel Jacobowitz <drow@false.org> writes:

> On Tue, Jun 05, 2007 at 03:06:14PM +0200, Andreas Schwab wrote:
>> Daniel Jacobowitz <drow@false.org> writes:
>> 
>> > On Tue, Jun 05, 2007 at 02:47:34PM +0200, Andreas Schwab wrote:
>> >> What function does gdb call to destroy a frame cache object?
>> >
>> > reinit_frame_cache destroys the whole cache; is that what you mean?
>> 
>> How can you deallocate any extra memory?
>
> Extra memory normally goes on the frame obstack using
> frame_obstack_zalloc.

This is not possible.  There is no way to tell libunwind not to use
malloc.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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"And now for something completely different."