1  /* Test C2x attribute syntax.  Invalid use of fallthrough attribute
       2     outside switch.  */
       3  /* { dg-do compile } */
       4  /* { dg-options "-std=c2x -pedantic-errors -Wextra" } */
       5  
       6  int
       7  f (int a)
       8  {
       9    [[fallthrough]]; /* { dg-error "invalid use of attribute 'fallthrough'" } */
      10    return a;
      11  }