[issue6434] buffer overflow in Zipfile when wrinting more than 2gig file

[segfault42]

segfault42 <brice.nahum at free.fr> added the comment:

yes it's zinfo.file_size which is bigger than the long specify in the 
struct.pack

There's must have a solution with the extra header because a lot of tools 
can zip big file and these zip file can be open by zipfile.py

it's easy to reproduice with a big file of 3 gig.

i think that the problem come from that the write methode do not take 
care of the flag allowZip64

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue6434>
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