1  /* Test that declaring a function with () is the same as (void) in C2X.  Valid
       2     use cases.  */
       3  /* { dg-do compile } */
       4  /* { dg-options "-std=c2x -pedantic-errors -Wstrict-prototypes" } */
       5  
       6  void f1 ();
       7  void f1 (void);
       8  
       9  void f2 (void);
      10  void f2 ();
      11  
      12  typedef void T1 ();
      13  typedef void T1 (void);
      14  
      15  void f3 ();
      16  
      17  _Static_assert (_Generic (f3,
      18  			  void (*) (int) : 1,
      19  			  void (*) (void) : 2,
      20  			  default : 3) == 2);