[mypyc] Raise ValueError if int too big for native int type #20385
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Previously we used OverflowError, which seems inconsistent with CPython, since a conversion/range check is arguably not an arithmetic operation, and OverflowError is a subclass of ArithmeticError. This is an extract for the docs for OverflowError: "Raised when the result of an arithmetic operation is too large to be represented."
p-sawicki
approved these changes
Dec 9, 2025
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Previously we used OverflowError, which seems inconsistent with
CPython, since a conversion/range check is arguably not an arithmetic
operation, and OverflowError is a subclass of ArithmeticError.
This is an extract for the docs for OverflowError: "Raised when the result
of an arithmetic operation is too large to be represented."