[issue21370] segfault from simple traceback.format_exc call

[John Rusnak]

New submission from John Rusnak:

Launch python3.3 and then

>>> import traceback
>>> tracebacke.format_exc()

Seomteims a long trace about missing attribute is produced, on subequent of sometimes first call, python executable segfaults.  I see this behavior in an app as well then calling format_exc() under a real exception condition.

----------
messages: 217321
nosy: John.Rusnak
priority: normal
severity: normal
status: open
title: segfault from simple traceback.format_exc call
versions: Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21370>
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