rust/tests/ui/derive-uninhabited-enum-38885.rs
2024-02-16 20:02:50 +00:00

20 lines
370 B
Rust

//@ check-pass
//@ compile-flags: -Wunused
// ensure there are no special warnings about uninhabited types
// when deriving Debug on an empty enum
#[derive(Debug)]
enum Void {}
#[derive(Debug)]
enum Foo {
Bar(#[allow(dead_code)] u8),
Void(Void), //~ WARN variant `Void` is never constructed
}
fn main() {
let x = Foo::Bar(42);
println!("{:?}", x);
}