1  /* PR c/69104.  Test atomic routines for invalid memory model errors.  This
       2     only needs to be tested on a single size.  */
       3  /* { dg-do compile } */
       4  /* { dg-require-effective-target sync_int_long } */
       5  
       6  #include <stdatomic.h>
       7  
       8  /* atomic_store_explicit():
       9     The order argument shall not be memory_order_acquire,
      10     memory_order_consume, nor memory_order_acq_rel.  */
      11  
      12  void
      13  store (atomic_int *i)
      14  {
      15    atomic_store_explicit (i, 0, memory_order_consume); /* { dg-warning "invalid memory model" } */
      16    atomic_store_explicit (i, 0, memory_order_acquire); /* { dg-warning "invalid memory model" } */
      17    atomic_store_explicit (i, 0, memory_order_acq_rel); /* { dg-warning "invalid memory model" } */
      18  }
      19  
      20  /* atomic_load_explicit():
      21     The order argument shall not be memory_order_release nor
      22     memory_order_acq_rel.  */
      23  
      24  void
      25  load (atomic_int *i)
      26  {
      27    atomic_int j = atomic_load_explicit (i, memory_order_release); /* { dg-warning "invalid memory model" } */
      28    atomic_int k = atomic_load_explicit (i, memory_order_acq_rel); /* { dg-warning "invalid memory model" } */
      29  }
      30  
      31  /* atomic_compare_exchange():
      32     The failure argument shall not be memory_order_release nor
      33     memory_order_acq_rel.  The failure argument shall be no stronger than the
      34     success argument.  */
      35  
      36  void
      37  exchange (atomic_int *i)
      38  {
      39    int r;
      40  
      41    atomic_compare_exchange_strong_explicit (i, &r, 0, memory_order_seq_cst, memory_order_release); /* { dg-warning "invalid failure memory model 'memory_order_release'" } */
      42    atomic_compare_exchange_strong_explicit (i, &r, 0, memory_order_seq_cst, memory_order_acq_rel); /* { dg-warning "invalid failure memory model 'memory_order_acq_rel'" } */
      43    atomic_compare_exchange_strong_explicit (i, &r, 0, memory_order_relaxed, memory_order_consume); /* { dg-warning "failure memory model 'memory_order_consume' cannot be stronger than success memory model 'memory_order_relaxed'" } */
      44  
      45    atomic_compare_exchange_weak_explicit (i, &r, 0, memory_order_seq_cst, memory_order_release); /* { dg-warning "invalid failure memory model 'memory_order_release'" } */
      46    atomic_compare_exchange_weak_explicit (i, &r, 0, memory_order_seq_cst, memory_order_acq_rel); /* { dg-warning "invalid failure memory model 'memory_order_acq_rel'" } */
      47    atomic_compare_exchange_weak_explicit (i, &r, 0, memory_order_relaxed, memory_order_consume); /* { dg-warning "failure memory model 'memory_order_consume' cannot be stronger than success memory model 'memory_order_relaxed'" } */
      48  }
      49  
      50  /* atomic_flag_clear():
      51     The order argument shall not be memory_order_acquire nor
      52     memory_order_acq_rel.  */
      53  
      54  void
      55  clear (atomic_int *i)
      56  {
      57    atomic_flag_clear_explicit (i, memory_order_acquire); /* { dg-warning "invalid memory model" } */
      58    atomic_flag_clear_explicit (i, memory_order_acq_rel); /* { dg-warning "invalid memory model" } */
      59  }