On Mon, 20 Aug 2018 at 09:07, Vincent Lefevre wrote: > > On 2018-08-18 14:19:10 -0500, Segher Boessenkool wrote: > > Usually cast between a pointer type and a different size integer type > > is a programmer mistake. That is why this warning is enabled by -Wall. > > I don't see why. In doubt, one should be able to choose the largest > integer type available. Note also that the C standard does not say > that an integer type of the same size as the pointer is sufficient. It says even uintmax_t might not be sufficient. It also says that if intptr_t and uintptr_t are defined, then they can hold the value of any void*. So it seems like you're not actually solving the problem by using uintmax_t, just reducing it. I still think it's best to use uintptr_t when available.
