[issue18294] zlib module is not completly 64-bit safe

[Serhiy Storchaka]

Changes by Serhiy Storchaka <storchaka at gmail.com>:


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components: +Extension Modules
nosy: +nadeem.vawda
stage:  -> patch review
type:  -> behavior
versions: +Python 2.7, Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18294>
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