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From: Tom Tromey <tromey@redhat.com>
To: Christoph Mathys <eraserix@gmail.com>
Cc: gdb@sourceware.org
Subject: Re: passing gdb.Value pointers to ctypes function calls
References: <BANLkTimYpcNe63aXb7rabE-ziWaDrXN+kA@mail.gmail.com>
Date: Wed, 13 Apr 2011 14:26:00 -0000
In-Reply-To: <BANLkTimYpcNe63aXb7rabE-ziWaDrXN+kA@mail.gmail.com> (Christoph	Mathys's message of "Tue, 12 Apr 2011 11:44:22 +0200")
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>>>>> "Christoph" == Christoph Mathys <eraserix@gmail.com> writes:

Christoph> I'm trying to write a pretty printer for gdb 7.2 using python, to be
Christoph> concrete I would like to print an Xml node (libxml2) as text. I've
Christoph> managed to get the pointers to node and document. Now I'm trying to
Christoph> call libxml using ctypes module, passing the pointer values as
Christoph> c_void_p. But gdb keeps crashing on me. Is this supposed to work at
Christoph> all?

Nope, this won't work.

A gdb.Value represents a value in the inferior.  If you look at its
address, you are getting an address in some other process, not in gdb.

Tom