[issue17919] AIX POLLNVAL definition causes problems

[STINNER Victor]

STINNER Victor added the comment:

> The disadvantage of 'H' is that it never raises OverflowError.

The correct fix is to write a new parser just for this function.

See for example uint_converter() in Modules/zlibmodule.c. I would prefer to add such new parser to Python/getargs.c directly, but I was not motivated when I fixed #18294 (integer overflow in the zlib module).

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nosy: +haypo

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<http://bugs.python.org/issue17919>
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