xref: /linux/tools/memory-model/litmus-tests/CoWR+poonceonce+Once.litmus (revision bfd5bb6f90af092aa345b15cd78143956a13c2a8) 
1C CoWR+poonceonce+Once
2
3(*
4 * Result: Never
5 *
6 * Test of write-read coherence, that is, whether or not a write to a
7 * given variable and a later read from that same variable are ordered.
8 *)
9
10{}
11
12P0(int *x)
13{
14	int r0;
15
16	WRITE_ONCE(*x, 1);
17	r0 = READ_ONCE(*x);
18}
19
20P1(int *x)
21{
22	WRITE_ONCE(*x, 2);
23}
24
25exists (x=1 /\ 0:r0=2)
26