24         std::atomic_flag f; // uninitialized  in main()  local
25         f.clear();  in main()
26         assert(f.test_and_set() == 0);  in main()
27         f.clear();  in main()
28         assert(f.test_and_set() == 0);  in main()
31         std::atomic_flag f;  in main()  local
32         f.clear(std::memory_order_relaxed);  in main()
33         assert(f.test_and_set() == 0);  in main()
34         f.clear(std::memory_order_relaxed);  in main()
35         assert(f.test_and_set() == 0);  in main()
38         std::atomic_flag f;  in main()  local
39         f.clear(std::memory_order_release);  in main()
40         assert(f.test_and_set() == 0);  in main()
41         f.clear(std::memory_order_release);  in main()
42         assert(f.test_and_set() == 0);  in main()
45         std::atomic_flag f;  in main()  local
46         f.clear(std::memory_order_seq_cst);  in main()
47         assert(f.test_and_set() == 0);  in main()
48         f.clear(std::memory_order_seq_cst);  in main()
49         assert(f.test_and_set() == 0);  in main()
52         volatile std::atomic_flag f;  in main()  local
53         f.clear();  in main()
54         assert(f.test_and_set() == 0);  in main()
55         f.clear();  in main()
56         assert(f.test_and_set() == 0);  in main()
59         volatile std::atomic_flag f;  in main()  local
60         f.clear(std::memory_order_relaxed);  in main()
61         assert(f.test_and_set() == 0);  in main()
62         f.clear(std::memory_order_relaxed);  in main()
63         assert(f.test_and_set() == 0);  in main()
66         volatile std::atomic_flag f;  in main()  local
67         f.clear(std::memory_order_release);  in main()
68         assert(f.test_and_set() == 0);  in main()
69         f.clear(std::memory_order_release);  in main()
70         assert(f.test_and_set() == 0);  in main()
73         volatile std::atomic_flag f;  in main()  local
74         f.clear(std::memory_order_seq_cst);  in main()
75         assert(f.test_and_set() == 0);  in main()
76         f.clear(std::memory_order_seq_cst);  in main()
77         assert(f.test_and_set() == 0);  in main()