1  /* { dg-do compile } */
       2  
       3  void
       4  f4(const foo x) /* { dg-error "10:unknown type name" } */
       5  {}
       6  
       7  void
       8  f5(foo x, int i) /* { dg-error "4:unknown type name" } */
       9  {}
      10  
      11  void
      12  f6(char c, foo x, ...) /* { dg-error "12:unknown type name" } */
      13  {}