When is uintptr_t preferred over intptr_t?

Question

Given the requirement that I need to store the value of a \"generic\" pointer in a struct and have no interest in the pointed-at memory itself, I find it more semantically corre

Answer 1

If you want to manipulate the value arithmetically (e.g., to encrypt it), you have much more flexibility with an unsigned type (where arithmetic wraps around) than with a signed type (where arithmetic overflow gives undefined behavior).