[issue40225] max() performance regression (quadratic time)

[brendon zhang]

brendon zhang <brendon-zhang at hotmail.com> added the comment:

update:
it is specifically caused by passing in a generator expression to max(), where the generator invokes recursive function.

I added another file to demonstrate this

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Added file: https://bugs.python.org/file49044/maxbug2.py

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<https://bugs.python.org/issue40225>
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