| // Copyright 2015 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. |
| |
| // Regression test for #29859, supertrait version. This example |
| // allowed arbitrary trait bounds to be synthesized. |
| |
| trait Magic: Copy {} |
| impl<T: Magic> Magic for T {} |
| |
| fn copy<T: Magic>(x: T) -> (T, T) { (x, x) } |
| |
| #[derive(Debug)] |
| struct NoClone; |
| |
| fn main() { |
| let (a, b) = copy(NoClone); //~ ERROR E0275 |
| println!("{:?} {:?}", a, b); |
| } |
