[issue2389] Array pickling exposes internal memory representation of elements

[Hrvoje Nikšić]

Hrvoje Nikšić <hniksic at gmail.com> added the comment:

Here is an example that directly demonstrates the bug.  Pickling on x86_64:

Python 2.5.1 (r251:54863, Mar 21 2008, 13:06:31) 
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import array, cPickle as pickle
>>> pickle.dumps(array.array('l', [1, 2, 3]))
"carray\narray\np1\n(S'l'\nS'\\x01\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x02\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x03\\x00\\x00\\x00\\x00\\x00\\x00\\x00'\ntRp2\n."

Unpickling on ia32:
Python 2.5.1 (r251:54863, Oct  5 2007, 13:36:32) 
[GCC 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import cPickle as pickle
>>>
pickle.loads("carray\narray\np1\n(S'l'\nS'\\x01\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x02\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x03\\x00\\x00\\x00\\x00\\x00\\x00\\x00'\ntRp2\n.")
array('l', [1, 0, 2, 0, 3, 0])

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Tracker <report at bugs.python.org>
<http://bugs.python.org/issue2389>
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