PEP 7: Mention signed overflow explicitly #2796

You gotta find someone else to argue, sorry.

I'm not seeing the benefit of this PR's change. All it's saying is CPython was compiled with a certain flag up to a certain point. But PEP 7 is about how CPython is compiled but how to write C code within the project. Without specific guidance, e.g. "all arithmetic operations that may overflow are expected to ...," I'm not seeing what use core developers are supposed to derive from this to guide their coding.

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PEP 7: Mention signed overflow explicitly #2796

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PEP 7: Mention signed overflow explicitly #2796

matthiasgoergens commented Sep 17, 2022

gvanrossum Sep 18, 2022

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matthiasgoergens Sep 18, 2022 •

edited

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gvanrossum Sep 18, 2022

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matthiasgoergens Sep 18, 2022 •

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matthiasgoergens Sep 18, 2022 •

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gvanrossum commented Sep 18, 2022

brettcannon commented Sep 23, 2022

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		* Python versions up to and including 3.11 tacitly allowed signed arithmetic
		overflow (wrapping around using twos-complement representation) via the ``-fwrapv`` compiler option.