Am Donnerstag, dem 08.08.2024 um 02:36 +0200 schrieb Alejandro Colomar: > Hi Martin, > > Can we promote -Wno-sizeof-array-argument to a hard error? I don't > think there's any legitimate use sizeof() on such a parameter.
I am a bit worried that it might prevent people from adding size information to arguments, by transforming later use of sizeof on such a pointer argument into a hard error. So I would not do this at this time, until we have fully evolved the size checking and the benefits are clear. > > It would be an incompatible extension to ISO C, which would make sure > that there are no remaining uses of sizeof(array_param), which would > itself allow in the future --if n2906 or something similar is accepted-- > repurposing sizeof() to return the size in bytes of the array (instead > of the size of a pointer) without worrying about breaking existing code. I agree with this goal, but this is a long term goal. Martin >
