text: /* PR c/51628.  */
  /* { dg-do compile } */
  /* { dg-options "-O" } */
  
  struct B { int i; };
  struct C { struct B b; } __attribute__ ((packed));
  
  int* h4 (struct C *p) { return &p->b.i; }
  /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
  