gcc/testsuite/gcc.dg/noncompile/931203-1.c - gcc - Git at Google

 typedef struct
 {
   int x, y;
 } point_t;


 point_t
 f ()
 {
   return 0;	/* { dg-error "incompatible types" } */
 }
	typedef struct
	{
	int x, y;
	} point_t;


	point_t
	f ()
	{
	return 0; /* { dg-error "incompatible types" } */
	}