[Python-Dev] Hash randomization for which types?
Larry Hastings
larry at hastings.org
Wed Feb 17 08:29:31 EST 2016
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.
//arry/
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