Finalize GC memory

[Namespace]

> I'd be worried about whether it actually called the destructors 
> of the members
> of the struct. IIRC, you actually have to play around with 
> TypeInfo in order
> to be able to correctly manually destroy a struct rather than 
> simply calling
> its __dtor method, but it's not something that I ever do, so I 
> don't remember
> the details. Regardless, if destroy doesn't actually destroy a 
> struct
> correctly, then that's a bug and should be reported.
>
> - Jonathan M Davis

Why the members could not be destroyed? Could you give me an 
example?
And did you have a link, that explain how I should use TypeInfo 
to destroy the struct correctly?