From: Peter Dimov (pdimov_at_[hidden])
Date: 2002-08-27 09:26:19
From: "Olaf Petzold" <yg-boost-users_at_[hidden]>
> Thanks for answers,
>
> the const ptr was a fault.
>
> Well, the following example shows the problem in detail:
Two errors. First, Spec is not a polymorphic type - add a virtual function
(destructor, for instance) to enable dynamic_cast / polymorphic_cast.
Second, the exception thrown is std::bad_cast, not std::bad_alloc.