tests/ui/derive-uninhabited-enum-38885.rs

   1 // check-pass
   2 // compile-flags: -Wunused
   3
   4 // ensure there are no special warnings about uninhabited types
   5 // when deriving Debug on an empty enum
   6
   7 #[derive(Debug)]
   8 enum Void {}
   9
  10 #[derive(Debug)]
  11 enum Foo {
  12     Bar(u8),
  13     Void(Void), //~ WARN variant `Void` is never constructed
  14 }
  15
  16 fn main() {
  17     let x = Foo::Bar(42);
  18     println!("{:?}", x);
  19 }