[Python-Dev] Hash randomization for which types? (original) (raw)
Larry Hastings larry at hastings.org
Wed Feb 17 08:29:31 EST 2016
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On 02/16/2016 09:22 PM, Stephen J. Turnbull wrote:
Glenn Linderman writes:
> I think hashes of all types have been randomized, not just the list > you mentioned. Yes. There's only one hash function used, which operates on byte streams IIRC. That function now has a random offset. The details of hashing each type are in the serializations to byte streams.
Both these statements are wrong. int objects have their own hash algorithm, built in to long_hash() in Objects/longobject.c. The hash of an int is the value of the int, unless it's -1 or doesn't fit into the native type. And ints don't participate in hash randomization.
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