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0001 C Atomic-RMW-ops-are-atomic-WRT-atomic_set
0002
0003 (*
0004 * Result: Never
0005 *
0006 * Test that atomic_set() cannot break the atomicity of atomic RMWs.
0007 * NOTE: This requires herd7 7.56 or later which supports "(void)expr".
0008 *)
0009
0010 {
0011 atomic_t v = ATOMIC_INIT(1);
0012 }
0013
0014 P0(atomic_t *v)
0015 {
0016 (void)atomic_add_unless(v, 1, 0);
0017 }
0018
0019 P1(atomic_t *v)
0020 {
0021 atomic_set(v, 0);
0022 }
0023
0024 exists
0025 (v=2)
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