[issue22207] Test for integer overflow on Py_ssize_t: explicitly cast to size_t

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

I have reviewed the patch and found only few checks which looks good to me. Also I found two possible overflows (not fixed by the patch). All other changes looks redundant to me and just churn a code.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22207>
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