gcc/testsuite/gcc.dg/struct-incompl-1.c - gcc - Git at Google

 /* PR c/26818 */
 /* { dg-do compile } */

 struct __attribute__ ((packed)) A
 {
   struct B b; /* { dg-error "incomplete" } */
 };
	/* PR c/26818 */
	/* { dg-do compile } */

	struct __attribute__ ((packed)) A
	{
	struct B b; /* { dg-error "incomplete" } */
	};