tests/ui/deriving/deriving-clone-enum.rs - rust-lang/rust - Git at Google

 //@ run-pass
 #![allow(dead_code)]

 #[derive(Clone)]
 enum E {
     A,
     B(()),
     C
 }

 pub fn main() {
     let _ = E::A.clone();
 }
	//@ run-pass
	#![allow(dead_code)]

	#[derive(Clone)]
	enum E {
	A,
	B(()),
	C
	}

	pub fn main() {
	let _ = E::A.clone();
	}