C++: Is it safe to cast pointer to int and later back to pointer again?

Question

Is it safe to cast pointer to int and later back to pointer again?

How about if we know if the pointer is 32 bit long and int is 32 bit long?

long* j         


        

Answer 1

Use uintptr_t from "stdint.h" or from "boost/stdint.h". It is guaranteed to have enough storage for a pointer.