Angus Gratton 516aa02104 py/objint_longlong: Add arithmetic overflow checks. ...

Long long big integer support now raises an exception on overflow rather
than returning an undefined result.

Also adds an error when shifting by a negative value.

The new arithmetic checks are added in the misc.h header.

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <angus@redyak.com.au>

2025-07-18 00:12:05 +10:00

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