[issue16693] Assertion error in ceval if Chainmap(object()) used as locals in eval

[R. David Murray]

New submission from R. David Murray:

>>> import collections
[61531 refs, 20955 blocks]
>>> eval('foo', {}, collections.ChainMap(object()))
python: Python/ceval.c:2996: PyEval_EvalFrameEx: Assertion `0' failed.
zsh: abort      ./python

----------
messages: 177542
nosy: r.david.murray, rhettinger
priority: normal
severity: normal
stage: needs patch
status: open
title: Assertion error in ceval if Chainmap(object()) used as locals in eval
type: behavior
versions: Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16693>
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