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)
