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From: Tom Tromey <tromey@redhat.com>
To: Christoph Mathys <eraserix@gmail.com>
Cc: gdb@sourceware.org
Subject: Re: cast in gdb python results in virtual baseclass botch
References: <BANLkTini00+LMH4JjDmNOWNe+2PMi+b3Lg@mail.gmail.com>
Date: Thu, 14 Apr 2011 16:03:00 -0000
In-Reply-To: <BANLkTini00+LMH4JjDmNOWNe+2PMi+b3Lg@mail.gmail.com> (Christoph	Mathys's message of "Wed, 13 Apr 2011 16:59:49 +0200")
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>>>>> "Christoph" == Christoph Mathys <eraserix@gmail.com> writes:

Christoph> RuntimeError: virtual baseclass botch

Christoph> I use gdb 7.2, which apparently does not yet support dynamic_cast().

Christoph> Both variables are stored inside a boost::shared_ptr, and I try to
Christoph> cast to contained interface pointer to a specific implementation
Christoph> pointer.

Can you make a small, self-contained example program showing the bug?
That would be very helpful.

I am not sure under what circumstances "virtual baseclass botch" can
show up.  The code is obscure.

Tom