1  /* Test the atomic_init generic function.  Verify that __atomic_store_N
       2     is called with the last argument of memory_order_relaxed (i.e., 0)
       3     for each invocation of the atomic_init() macro in the test and that
       4     there are no calls to __atomic_store_N with a non-zero last argument.  */
       5  /* { dg-do compile } */
       6  /* { dg-options "-fdump-tree-gimple -std=c11 -pedantic-errors" } */
       7  /* { dg-final { scan-tree-dump-times "__atomic_store_. \\(\[^\n\r]*, 0\\)" 54 "gimple" } } */
       8  /* { dg-final { scan-tree-dump-not "__atomic_store_. \\(\[^\n\r]*, \[1-5\]\\)" "gimple" } } */
       9  
      10  #include <stdatomic.h>
      11  
      12  struct Atomic {
      13    /* Volatile to prevent re-initialization from being optimized away.  */
      14    volatile atomic_bool   b;
      15    volatile atomic_char   c;
      16    volatile atomic_schar  sc;
      17    volatile atomic_uchar  uc;
      18    volatile atomic_short  ss;
      19    volatile atomic_ushort us;
      20    volatile atomic_int    si;
      21    volatile atomic_uint   ui;
      22    volatile atomic_long   sl;
      23    volatile atomic_ulong  ul;
      24    volatile atomic_llong  sll;
      25    volatile atomic_ullong ull;
      26    volatile atomic_size_t sz;
      27  };
      28  
      29  struct Value {
      30    _Bool              b;
      31    char               c;
      32    signed char        sc;
      33    unsigned char      uc;
      34    short              ss;
      35    unsigned short     us;
      36    int                si;
      37    unsigned int       ui;
      38    long               sl;
      39    unsigned long      ul;
      40    long long          sll;
      41    unsigned long long ull;
      42    __SIZE_TYPE__      sz;
      43  };
      44  
      45  /* Exercise the atomic_init() macro with a literal argument.  */
      46  
      47  void atomic_init_lit (struct Atomic *pa)
      48  {
      49    atomic_init (&pa->b, 0);
      50    atomic_init (&pa->b, 1);
      51  
      52    atomic_init (&pa->c, 'x');
      53    atomic_init (&pa->c, 0);
      54    atomic_init (&pa->c, 1);
      55    atomic_init (&pa->c, 255);
      56    
      57    atomic_init (&pa->sc, (signed char)'x');
      58    atomic_init (&pa->sc, (signed char)0);
      59    atomic_init (&pa->sc, (signed char)1);
      60    atomic_init (&pa->sc, (signed char)__SCHAR_MAX__);
      61  
      62    atomic_init (&pa->uc, (unsigned char)'x');
      63    atomic_init (&pa->uc, (unsigned char)0);
      64    atomic_init (&pa->uc, (unsigned char)1);
      65    atomic_init (&pa->sc, (unsigned char)__SCHAR_MAX__);
      66  
      67    atomic_init (&pa->ss, (signed short)0);
      68    atomic_init (&pa->ss, (signed short)1);
      69    atomic_init (&pa->ss, (signed short)__SHRT_MAX__);
      70  
      71    atomic_init (&pa->us, (unsigned short)0);
      72    atomic_init (&pa->us, (unsigned short)1);
      73    atomic_init (&pa->us, (unsigned short)__SHRT_MAX__);
      74  
      75    atomic_init (&pa->si, (signed int)0);
      76    atomic_init (&pa->si, (signed int)1);
      77    atomic_init (&pa->si, (signed int)__INT_MAX__);
      78  
      79    atomic_init (&pa->ui, (unsigned int)0);
      80    atomic_init (&pa->ui, (unsigned int)1);
      81    atomic_init (&pa->ui, (unsigned int)__INT_MAX__);
      82    
      83    atomic_init (&pa->sl, (signed long)0);
      84    atomic_init (&pa->sl, (signed long)1);
      85    atomic_init (&pa->sl, (signed long)__LONG_MAX__);
      86  
      87    atomic_init (&pa->ul, (unsigned long)0);
      88    atomic_init (&pa->ul, (unsigned long)1);
      89    atomic_init (&pa->ul, (unsigned long)__LONG_MAX__);
      90  
      91    atomic_init (&pa->sll, (signed long long)0);
      92    atomic_init (&pa->sll, (signed long long)1);
      93    atomic_init (&pa->sll, (signed long long)__LONG_LONG_MAX__);
      94  
      95    atomic_init (&pa->ull, (unsigned long long)0);
      96    atomic_init (&pa->ull, (unsigned long long)1);
      97    atomic_init (&pa->ull, (unsigned long long)__LONG_LONG_MAX__); 
      98  
      99    atomic_init (&pa->sz, 0);
     100    atomic_init (&pa->sz, 1);
     101    atomic_init (&pa->sz, __SIZE_MAX__); 
     102  }
     103  
     104  /* Exercise the atomic_init() macro with an lvalue argument.  */
     105  
     106  void atomic_init_lval (struct Atomic *pa, const struct Value *pv)
     107  {
     108    atomic_init (&pa->b, pv->b);
     109    atomic_init (&pa->c, pv->c);
     110    atomic_init (&pa->sc, pv->sc);
     111    atomic_init (&pa->uc, pv->uc);
     112    atomic_init (&pa->ss, pv->ss);
     113    atomic_init (&pa->us, pv->us);
     114    atomic_init (&pa->si, pv->si);
     115    atomic_init (&pa->ui, pv->ui); 
     116    atomic_init (&pa->sl, pv->sl);
     117    atomic_init (&pa->ul, pv->ul);
     118    atomic_init (&pa->sll, pv->sll);
     119    atomic_init (&pa->ull, pv->ull);
     120    atomic_init (&pa->sz, pv->sz);
     121  }