[New-bugs-announce] [issue16305] possible segfault in math.factorial

[Amaury Forgeot d'Arc]

New submission from Amaury Forgeot d'Arc:

>>> import math, sys
>>> math.factorial(sys.maxsize - 1)
(Hit Ctrl-C)
Segmentation fault

The cause is probably in mathmodule.c::factorial_odd_part():
  error:
    Py_DECREF(outer);
  done:
    Py_DECREF(inner);
    return outer;
In case of error, the function returns a released reference instead of NULL.

----------
messages: 173643
nosy: amaury.forgeotdarc
priority: normal
severity: normal
status: open
title: possible segfault in math.factorial
type: crash
versions: Python 3.2, Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16305>
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