Message 295152 - Python tracker

I can reproduce this bugs on 3.7, Linux.

Python 3.7.0a0 (heads/master:d3bedf356a, Jun  5 2017, 10:21:52) 
[GCC 6.3.1 20170306] on linux
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>>> class Foo(object):
...  def __getattr__(self, attr):
...   return (self, None)
... 
>>> issubclass(Foo(), int)

[1]    21897 segmentation fault (core dumped)  ./python