gcc/testsuite/gcc.dg/incomplete-typedef-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "" } */
   3
   4 typedef struct S TS;
   5 typedef union U TU;
   6
   7 void
   8 foo (void)
   9 {
  10   (TS) { }; /* { dg-error "invalid use of incomplete typedef" } */
  11   (TU) { }; /* { dg-error "invalid use of incomplete typedef" } */
  12 }