1  /* Test for MS bitfield layout */
       2  /* { dg-do run { target *-*-mingw* *-*-cygwin* i?86-*-* x86_64-*-* } } */
       3  
       4  extern void abort();
       5  
       6  struct s1_t {
       7      char a;
       8      char b __attribute__ ((aligned (16)));
       9  } __attribute__ ((ms_struct));
      10  struct s1_t s1;
      11  
      12  struct s2_t {
      13    char a;
      14    char b;
      15  } __attribute__ ((ms_struct));
      16  struct s2_t s2;
      17  
      18  struct s3_t {
      19    __extension__ char a : 6;
      20    char b __attribute__ ((aligned (16)));
      21  } __attribute__ ((ms_struct));
      22  struct s3_t s3;
      23  
      24  struct s4_t {
      25    __extension__ char a : 6;
      26    char b __attribute__ ((aligned (2)));
      27  } __attribute__ ((ms_struct));
      28  struct s4_t s4;
      29  
      30  struct s5_t {
      31    __extension__ char a : 6;
      32    char b __attribute__ ((aligned (1)));
      33  } __attribute__ ((ms_struct));
      34  struct s5_t s5;
      35  
      36  __extension__
      37  static __PTRDIFF_TYPE__ offs (const void *a, const void *b)
      38  {
      39    return (__PTRDIFF_TYPE__) ((const char*)a  - (const char*)b);
      40  }
      41  
      42  int main()
      43  {
      44    if (offs (&s1.b, &s1) != 16
      45        || offs (&s2.b, &s2) != 1
      46        || offs (&s3.b, &s3) != 16
      47        || offs (&s4.b, &s4) != 2
      48        || offs (&s5.b, &s5) != 1)
      49      abort ();
      50    return 0;
      51  }
      52