I'm not sure what information would suite you best, so I made a couple screen grabs 
and put them on my server:

http://strider.terralab.com/~bryan/ruby/

Bryan

> Can you put a breakpoint on this line, and see the content of super and
> klass, i.e.
>
>  *(struct RClass *)super
>  *(struct RClass *)rb_cObject
>  *(struct RClass *)klass
>
>
>Guy Decoux