[issue24567] random.choice IndexError due to double-rounding

[Stefan Krah]

Stefan Krah added the comment:

The double rounding problem even occurs between different versions
of gcc. I think ultimately we should put our foot down and ship with
sse2 enabled (not possible for 2.7 though, unless an LTS-PEP emerges).

If distributions want to break that, it's their business. :)
The gcc manual is quite upfront about the issue and really
recommends sse2 for reproducible results.

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