compiler panic when class name is used as a type

[nobody]

The compiler panics with a message "the `impossible'    
happened" when compiling the following:    
    
class Foo where    
  bar :: Foo    
 
It seems to happen whenever the class name is used   
as a type within its own `where' clause.  This should  
yield a more comprehensible error message.  
  
I can be reached at vnkwjyc02@sneakemail.com  

[simonmar]

Logged In: YES 
user_id=48280

This has been fixed.