1  /* PR c/51628.  */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O" } */
       4  
       5  void foo (int *);
       6  
       7  int *
       8  bar (int n, int k, void *ptr)
       9  {
      10    struct A
      11    {
      12      char c[k];
      13      int x[n];
      14    } __attribute__ ((packed));
      15    struct A *p = (struct A *) ptr;
      16  
      17    int *p0, *p1;
      18    p0 = p->x;
      19  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
      20    foo (p0);
      21    p1 = &p->x[1];
      22  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
      23    foo (p1);
      24    return &p->x[1];
      25  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
      26  }