gcc/testsuite/c-c++-common/pr51628-30.c

   1 /* PR c/51628.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O" } */
   4
   5 struct A { __complex int i; };
   6 struct B { struct A a; };
   7 struct C { struct B b __attribute__ ((packed)); };
   8
   9 extern struct C *p;
  10
  11 int*
  12 foo1 (void)
  13 {
  14   return &__real(p->b.a.i);
  15 /* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */
  16 }
  17
  18 int*
  19 foo2 (void)
  20 {
  21   return &__imag(p->b.a.i);
  22 /* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */
  23 }