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

If the issue is that you want to do normal math on it, probably the safest thing to do would be to cast it to a pointer to char (or better yet, * uint8_t), do your math, and then cast it back.