[pypy-dev] Annotating space status

[Guido van Rossum]

> >I have a feeling that the real problem here may be that the value
> >stack isn't properly cloned, which means that the frames stored in
> >knownframes will share their objects with the frame being modified as
> >part of the current frame evaluation.  I'd bet that if you properly
> >clone the value stack using clonecells(), Samuele's hack (adding a
> >'changed' flag to the W_ConstantIterator class) would no longer be
> >necessary.
> >
> >Wishing I had time to code this up,
> 
> makes sense, done. 

Thanks, cool.

What did you mean by this comment?

# XXX should we copy seq, and roll our own definition of identity?

BTW I note that all __eq__ methods can be removed if we change __eq__
in W_Object to

    def __eq__(self, other):
        return type(other) is type(self) and other.__dict__ == self.__dict__

--Guido van Rossum (home page: http://www.python.org/~guido/)