1 /* Test atomic_flag routines for existence and execution.  */
2 /* The test needs a lockless atomic implementation.  */
3 /* { dg-do run { xfail hppa*-*-hpux* } } */
4 /* { dg-options "-std=c11 -pedantic-errors" } */
5 
6 #include <stdatomic.h>
7 
8 extern void abort (void);
9 atomic_flag a = ATOMIC_FLAG_INIT;
10 
11 int
main()12 main ()
13 {
14   int b;
15 
16   if (!atomic_is_lock_free (&a))
17     abort ();
18 
19   if (atomic_flag_test_and_set (&a))
20     abort ();
21   atomic_flag_clear_explicit (&a, memory_order_relaxed);
22   if (atomic_flag_test_and_set (&a))
23     abort ();
24   atomic_flag_clear (&a);
25 
26   b = atomic_flag_test_and_set_explicit (&a, memory_order_seq_cst);
27   if (!atomic_flag_test_and_set (&a) || b != 0)
28     abort ();
29 
30   b = atomic_flag_test_and_set_explicit (&a, memory_order_acq_rel);
31   if (!atomic_flag_test_and_set (&a) || b != 1)
32     abort ();
33 
34   atomic_flag_clear_explicit (&a, memory_order_seq_cst);
35   if (atomic_flag_test_and_set (&a))
36     abort ();
37 
38   return 0;
39 }
40