"Wrap on integer overflow is not a good idea"https://davmac.wordpress.com/2018/08/20/wrap-on-integer-overflow-is-not-a-good-idea/ …
Whether it's a good idea is entirely moot since it's already defined. Only the case that's undefined is open to questions about how it should be implemented.
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There is a theoretical plane other than a pragmatic one. But still, that kinda proves the point I was making... Unsigned wraps, thus it's reasonable to say the less error prone solution is for signed to wrap too. Also as I wrote later, warnings as errors and you're "safe".
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