1  /* { dg-do compile } */
       2  /* { dg-options "-Os -mno-unaligned-access" } */
       3  /* { dg-final { scan-assembler "ldrb" } } */
       4  /* { dg-final { scan-assembler "strb" } } */
       5  
       6  struct s
       7  {
       8    char u;
       9    long long v[2];
      10  } __attribute__((packed,aligned(1)));
      11  
      12  __attribute__((noinline, noclone))
      13  long long foo(struct s *x, int y, long long z)
      14  {
      15    long long a = x->v[y];
      16    x->v[y] = z;
      17    return a;
      18  }
      19  
      20  struct s a = {0,{0,0}};
      21  int main()
      22  {
      23    if (foo(&a,0,1) != 0)
      24      __builtin_abort();
      25    if (foo(&a,0,2) != 1)
      26      __builtin_abort();
      27    if (foo(&a,1,1) != 0)
      28      __builtin_abort();
      29    return 0;
      30  }