[issue4170] segfault with defaultdict and pickle

[Hirokazu Yamamoto]

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

On py3k, defaultdict#items() returns dict_items object not
dict_itemiterator object. I hope attached patch will fix this bug.

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keywords: +patch
nosy: +ocean-city
Added file: http://bugs.python.org/file11856/fix_defaultdict_reduce.patch

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