[issue28055] pyhash's siphash24 assumes alignment of the data pointer

[Christian Heimes]

Christian Heimes added the comment:

The main reason for two different hash algorithms was missing support for 64bit integer types. Python 3.4 was targeting platforms that had no 64bit integer support at all (IIRC SPARC). Nowaday Python requires 64bit ints to compile.

I'm all in favor to remove FVN2 and use SipHash24 on all platforms. Let's deprecated it now and remove it in 3.7.

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<http://bugs.python.org/issue28055>
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