1  /* PR c/51628.  */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O" } */
       4  
       5  struct A
       6  {
       7     int i;
       8  };
       9  
      10  struct B
      11  {
      12     char c;
      13     __attribute ((packed)) struct A ar[4];
      14     /* { dg-warning "attribute ignored" "" { target default_packed } .-1 } */
      15  };
      16  
      17  struct B b;
      18  
      19  int *p = &b.ar[1].i;
      20  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */