Page History

...

unsigned int *g(void) {
  volatile uintptr_t iptr = 0xdeadbeef;
  unsigned int *ptr = (unsigned int *)iptr;
  /* ... */
  return ptr;
}

Exceptions

INT36-C-EX1: A null pointer can be converted to an integer; it takes on the value 0. Likewise, the integer value 0 can be converted to a pointer; it becomes the null pointer.

INT36-C-EX2: Any valid pointer to void can be converted to intptr_t or uintptr_t or their underlying types and back again with no change in value. Use of underlying types instead of intptr_t or uintptr_t is discouraged, however, because it limits portability.

...