1  /* PR c/51628.  */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O" } */
       4  
       5  struct pair_t
       6  {
       7    int x;
       8    int i;
       9  } __attribute__((packed));
      10  
      11  extern struct pair_t p;
      12  extern int *x;
      13  extern void bar (int *);
      14  
      15  int *addr = &p.i;
      16  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
      17  
      18  int *
      19  foo (void)
      20  {
      21    struct pair_t arr[2] = { { 1, 10 }, { 2, 20 } };
      22    int *p0, *p1;
      23    p0 = &arr[0].i;
      24  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
      25    bar (p0);
      26    p1 = &arr[1].i;
      27  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
      28    bar (p1);
      29    bar (&p.i);
      30  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
      31    x = &p.i;
      32  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
      33    return &p.i;
      34  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
      35  }