[issue31577] crash in os.utime() in case of a bad ns argument

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

There is also similar issue in timedelta.__divmod__.

PyLong_Type.tp_as_number->nb_divmod() works only with integers.

The different way of solving this issue is used in microseconds_to_delta_ex() in _datetimemodule.c.

Perhaps the best solution is to add a check that the result of nb_divmod() is a 2-tuple in PyNumber_Divmod(). This could fix similar errors in third-party code. What is your thoughts Mark?

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nosy: +mark.dickinson, serhiy.storchaka

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<https://bugs.python.org/issue31577>
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