[issue19520] Win32 compiler warning in _sha3

[Zachary Ware]

New submission from Zachary Ware:

There is only one remaining compiler warning on 32-bit Windows, see [1] (buildbot doubles warning counts on the Windows bots).

The warning is coming from Modules/_sha3/keccak/KeccakF-1600-opt32.c#l497, which uses extractLanes as defined on line 213.

The attached patch fixes the compiler warning, doesn't add any new ones, compiles, and doesn't break anything obvious.  I don't know enough about it to be confident in whether this is the right fix, so I'll leave it up to you, Christian :)

Thanks,

Zach


[1] http://buildbot.python.org/all/builders/x86%20Windows%20Server%202003%20%5BSB%5D%203.x/builds/1682/steps/compile/logs/warnings%20%282%29

----------
components: Build, Windows
files: sha3_compile_warning.diff
keywords: patch
messages: 202344
nosy: christian.heimes, zach.ware
priority: normal
severity: normal
stage: needs patch
status: open
title: Win32 compiler warning in _sha3
type: enhancement
versions: Python 3.4
Added file: http://bugs.python.org/file32530/sha3_compile_warning.diff

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