[issue17669] Segfault caused by weird combination of imports and yield from

[R. David Murray]

R. David Murray added the comment:

The crashing version has 'import logging' at the top of generators.py.  I did not experience a crash when it was absent even if there was no __pycache__.

It also doesn't crash if the import is moved out of the body of first_gen.

FAULTHANDLER doesn't fair too well on this one, no real surprise :)

Fatal Python error: Segmentation fault

Current thread 0xb75856c0:
zsh: segmentation fault  PYTHONFAULTHANDLER=true ../python test.py

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nosy: +brett.cannon, eric.snow, pitrou, r.david.murray, vinay.sajip
versions: +Python 3.4

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<http://bugs.python.org/issue17669>
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