[issue7542] segfault on cPickle.loads("0.")

[Anthony Foglia]

New submission from Anthony Foglia <afoglia at gmail.com>:

cPickle in Python 2.6.4 segfaults when trying to load the string "0.". 
pickle throws an error.  cPickle should at the least not segfault.

$ python
Python 2.6.4 (r264:75706, Nov  2 2009, 14:44:17) 
[GCC 4.4.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pickle, cPickle
>>> pickle.loads("0.")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.6/pickle.py", line 1374, in loads
    return Unpickler(file).load()
  File "/usr/lib/python2.6/pickle.py", line 858, in load
    dispatch[key](self)
  File "/usr/lib/python2.6/pickle.py", line 1138, in load_pop
    del self.stack[-1]
IndexError: list assignment index out of range
>>> cPickle.loads("0.")
Segmentation fault (core dumped)

----------
components: Library (Lib)
messages: 96580
nosy: afoglia
severity: normal
status: open
title: segfault on cPickle.loads("0.")
type: crash
versions: Python 2.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7542>
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