[issue26122] Isolated mode doesn't ignore PYTHONHASHSEED

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:

> Is there a way to fix the issue in 3.7 and earlier? We might consider it a security issue.

Hum, Python 3.7 is fixed as well. At least, in the 3.7 dev branch.

Fixed seed:

vstinner at apu$ PYTHONHASHSEED=42 ./python -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}
vstinner at apu$ PYTHONHASHSEED=42 ./python -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}
vstinner at apu$ PYTHONHASHSEED=42 ./python -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}
vstinner at apu$ PYTHONHASHSEED=42 ./python -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}

Random seed:

vstinner at apu$ PYTHONHASHSEED=42 ./python -I -c 'print(set("abcdefgh"))'
{'b', 'e', 'd', 'f', 'g', 'c', 'a', 'h'}
vstinner at apu$ PYTHONHASHSEED=42 ./python -I -c 'print(set("abcdefgh"))'
{'d', 'g', 'e', 'b', 'h', 'f', 'a', 'c'}
vstinner at apu$ PYTHONHASHSEED=42 ./python -I -c 'print(set("abcdefgh"))'
{'e', 'b', 'g', 'c', 'a', 'h', 'f', 'd'}
vstinner at apu$ PYTHONHASHSEED=42 ./python -I -c 'print(set("abcdefgh"))'
{'c', 'd', 'a', 'g', 'f', 'e', 'h', 'b'}

--

Python 3.6 has the bug:

vstinner at apu$ PYTHONHASHSEED=42 python3.6 -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}
vstinner at apu$ PYTHONHASHSEED=42 python3.6 -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}
vstinner at apu$ PYTHONHASHSEED=42 python3.6 -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}
vstinner at apu$ PYTHONHASHSEED=42 python3.6 -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}

vstinner at apu$ PYTHONHASHSEED=42 python3.6 -I -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}
vstinner at apu$ PYTHONHASHSEED=42 python3.6 -I -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}
vstinner at apu$ PYTHONHASHSEED=42 python3.6 -I -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}
vstinner at apu$ PYTHONHASHSEED=42 python3.6 -I -c 'print(set("abcdefgh"))'
{'g', 'e', 'a', 'b', 'c', 'f', 'h', 'd'}

----------
versions: +Python 3.7

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue26122>
_______________________________________