1  /* Test that declaring a function with () is the same as (void) in C2X.
       2     Invalid use cases.  */
       3  /* { dg-do compile } */
       4  /* { dg-options "-std=c2x -pedantic-errors" } */
       5  
       6  void f1 (); /* { dg-message "previous declaration" } */
       7  void f1 (int); /* { dg-error "conflicting types" } */
       8  
       9  void f2 (); /* { dg-message "declared here" } */
      10  
      11  void
      12  f3 (void)
      13  {
      14    f2 (1); /* { dg-error "too many arguments" } */
      15  }