website/code/cheri/ptrs_as_numbers.c

#include <stdio.h>

int main() {
    int magic = 9999;
    (void)magic; // suppress unused warning

    int arr[] = { 1234, 5678 };

    int *x = &(arr[0]); // x is a pointer to first element of arr
    printf("*(%lx)=%d\n", (size_t) x, *x);

    unsigned long x_addr = (size_t) x; // we're going to assume size_t = unsigned long here
    x_addr += 4; // sizeof(int) == 4
    x = (int *) x_addr;
    printf("*(%lx)=%d\n", (size_t) x, *x);

    x_addr += 4;
    x = (int *) x_addr;
    printf("*(%lx)=%d\n", (size_t) x, *x);

    return 0;
}