1  /* PR c/51628.  */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O" } */
       4  
       5  struct pair_t
       6  {
       7    char x;
       8    int i[4];
       9  } __attribute__ ((packed, aligned (4)));
      10  
      11  extern struct pair_t p;
      12  extern void bar (int *);
      13  
      14  void
      15  foo (struct pair_t *p)
      16  {
      17    bar (p ? p->i : (int *) 0);
      18  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
      19  }