On 12/14/19 4:35 PM, Bruno Haible wrote: > the advice can be simplified: If pointer arithmetic > is involved, uintptr_t is better suited than intptr_t. And if pointer > arithmetic > is not involved, uintptr_t and intptr_t are equivalent and equally good.
It's more complicated in Emacs, because Emacs sometimes converts small integers to pointers and then back again, and these integers can be negative. (The C standard doesn't guarantee that this works, but Emacs is deliberately nonportable in this low-level area and it does work on Emacs's current platforms.) For such conversions, signed integers are more convenient. It is a messy area, admittedly.
