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Subject: Re: guessing where address belongs to
From: Michael Snyder <msnyder@specifix.com>
To: Andreas Schwab <schwab@suse.de>
Cc: Yakov Lerner <iler.ml@gmail.com>, gdb@sourceware.org
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Date: Thu, 06 Mar 2008 20:28:00 -0000
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On Thu, 2008-03-06 at 11:05 +0100, Andreas Schwab wrote:
> "Yakov Lerner" <iler.ml@gmail.com> writes:
> 
> > Gdb has no integration with malloc, correct ?
> > Gdb has no  way of enumerating all malloced
> >  pieces ("heap objects"), correct ?
> >
> > Or gdb does have a way of guessing which "heap
> > object" some address X (that points inside the heap) belongs to ?
> 
> The details are highly dependent on the malloc implementation.  There is
> no way to find that out without intimate knowledge of the
> implementation.

Yep, and there's no marriage between any given platform
and any given malloc implementation.  Replacing the malloc
from glibc is a fairly common thing to do, for instance.

So gdb really has no idea what's in there...