Antoine Pitrou <pit...@free.fr> added the comment:

Here is an updated patch. It uses a 4-bit shift and an addition. We
should avoid the use of logical or, because it makes the outputs
non-uniformly distributed ('1' bits are more likely).

Added file: http://bugs.python.org/file13038/pointer_hash3.patch

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<http://bugs.python.org/issue5186>
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