linux/tools/memory-model/litmus-tests/CoRR+poonceonce+Once.litmus

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C CoRR+poonceonce+Once
(*
* Result: Never
*
* Test of read-read coherence, that is, whether or not two successive
* reads from the same variable are ordered.
*)
{}
P0(int *x)
{
WRITE_ONCE(*x, 1);
}
P1(int *x)
{
int r0;
int r1;
r0 = READ_ONCE(*x);
r1 = READ_ONCE(*x);
}
exists (1:r0=1 /\ 1:r1=0)