gcc/testsuite/c-c++-common/pr51628-16.c

   1 /* PR c/51628.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O" } */
   4
   5 struct __attribute__ ((packed)) A { int i; };
   6 struct B {
   7   struct A a;
   8 } b;
   9
  10 int *p = (int*)&b.a.i;
  11 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
  12 int *q = (int*)&b.a;
  13 /* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */