1  /* Test omitted parameter names in C2x.  Warning test: there should be
       2     no warning for an unnamed parameter being unused.  */
       3  /* { dg-do compile } */
       4  /* { dg-options "-std=c2x -pedantic-errors -Wall -Wextra" } */
       5  
       6  int
       7  f (int a, int, int c, int d) /* { dg-warning "unused parameter 'd'" } */
       8  {
       9    return a + c;
      10  }