C CoWW+poonceonce

(*
 * Result: Never
 *
 * Test of write-write coherence, that is, whether or not two successive
 * writes to the same variable are ordered.
 *)

{}

P0(int *x)
{
	WRITE_ONCE(*x, 1);
	WRITE_ONCE(*x, 2);
}

exists (x=1)