[issue4176] segfault with pickle if 4th or 5th item of tuple returned by __reduce__ is not an iterator

[Hirokazu Yamamoto]

Hirokazu Yamamoto <ocean-city at m2.ccsnet.ne.jp> added the comment:

Thank you for review.

>Iterators only need to provide a __next__() method. So, you don't have
>to check __iter__.

Hmm, but python document says,
(http://docs.python.org/library/stdtypes.html#typeiter)

>The iterator objects themselves are required to support the
>following two methods, which together form the iterator protocol:

Is this false information?

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<http://bugs.python.org/issue4176>
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