[issue19414] iter(ordered_dict) yields keys not in dict in some circumstances

[Roundup Robot]

Roundup Robot added the comment:

New changeset a3c345ba3563 by Raymond Hettinger in branch 'default':
Issue #19414: Have the OrderedDict mark deleted links as unusable.
http://hg.python.org/cpython/rev/a3c345ba3563

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nosy: +python-dev

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