Message 234588 - Python tracker

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Author	gregory.p.smith
Recipients	Danny.Yoo, gregory.p.smith
Date	2015-01-23.23:56:30
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1422057390.89.0.400487803009.issue23306@psf.upfronthosting.co.za>
In-reply-to

Content
This bug prevents zipfile's writestr() from writing large data (longer than UINT_MAX) to a 64-bit zip file. The zlib.crc32 function which, as written, cannot accept input with a size larger than an unsigned int. https://hg.python.org/cpython/file/94ec4d8cf104/Modules/zlibmodule.c#l964 Python 3 has updated this to call the zlib crc32 function multiple times in this situation: https://hg.python.org/cpython/file/93888975606b/Modules/zlibmodule.c#l1210 so the fix exists, we just need to do this in 2.7.

This bug prevents zipfile's writestr() from writing large data (longer than UINT_MAX) to a 64-bit zip file.

The zlib.crc32 function which, as written, cannot accept input with a size larger than an unsigned int.

https://hg.python.org/cpython/file/94ec4d8cf104/Modules/zlibmodule.c#l964

Python 3 has updated this to call the zlib crc32 function multiple times in this situation:

https://hg.python.org/cpython/file/93888975606b/Modules/zlibmodule.c#l1210

so the fix exists, we just need to do this in 2.7.

History
Date	User	Action	Args
2015-01-23 23:56:30	gregory.p.smith	set	recipients: + gregory.p.smith, Danny.Yoo
2015-01-23 23:56:30	gregory.p.smith	set	messageid: <1422057390.89.0.400487803009.issue23306@psf.upfronthosting.co.za>
2015-01-23 23:56:30	gregory.p.smith	link	issue23306 messages
2015-01-23 23:56:30	gregory.p.smith	create