In a C macro this is a classic problem - if 'a' is an argument to a macro, and '... | Hacker News

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		JoeAltmaier on Jan 16, 2018 \| parent \| context \| favorite \| on: Can (a ==1 && a== 2 && a==3) ever evaluate to true... In a C macro this is a classic problem - if 'a' is an argument to a macro, and 'i++' is provided to the macro, and 'i' had the value of 1, then this could evaluate to true.

contravariant on Jan 17, 2018 [–]

Or you could just trigger undefined behaviour, in which case it might evaluate to true.

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