[issue31573] crashes in os.wait3() and os.wait4() in case of a bad resource.struct_rusage

[STINNER Victor]

STINNER Victor added the comment:

Attached PR 3750 tries to validate the input type. The problem is that structseq is not exactly a type. It's hard to really validate everything. See the comment test in my PR.

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nosy: +haypo

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<https://bugs.python.org/issue31573>
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