| // Copyright 2016 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| #![feature(untagged_unions)] |
| |
| #[derive(Clone)] |
| union U { |
| a: u8 |
| } |
| |
| #[derive(Clone)] |
| union W { |
| a: String |
| } |
| |
| impl Copy for U {} // OK |
| impl Copy for W {} //~ ERROR the trait `Copy` may not be implemented for this type |
| |
| fn main() {} |
