gcc/testsuite/c-c++-common/pr51628-35.c

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