UB doesn't exist in the processor (it does, but not here). *If the compiler know... | Hacker News

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		immibis 4 days ago \| parent \| context \| favorite \| on: You can't fool the optimizer UB doesn't exist in the processor (it does, but not here). If the compiler knows the pointer is aligned it can do the transformation.

zrm 2 days ago [–]

For the compiler to know the pointer is aligned it would have to actually be aligned and there is no guarantee that it is.

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