nested scopes oddity/BUG

[Robin Becker]

When I try to run this script
#####################
from __future__ import nested_scopes
def gen(B):
        class W(B):
                __base=B
                def __init__(self):
                        B.__init__(self)
        return W

class C:
        def __init__(self):
                pass
#####################

I get

Fatal Python error: non-string found in code slot

abnormal program termination

this with 2.1 on Win9x. It works fine and dandy if I remove the spurious
__base=B
-- 
Robin Becker