Terry J. Reedy <tjre...@udel.edu> added the comment:

In #13707 I suggest a change to the current hash() entry which is needed 
independently of this issue, because the default hash (for object()), being 
tied to id() is already limited to an object's lifetime. But this change will 
become more imperative if hash() is made run-dependent for numbers and strings.

There does not seems to presently *be* a security hole for 64 bit builds, so if 
there is any noticeable slowdown on 64 bit builds and it is sensibly easy to 
tie the default to the bitness, I would think it should be off for such builds.

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nosy: +terry.reedy

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue13703>
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