| // 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. |
| |
| trait A<T>: std::ops::Add<Self> + Sized {} |
| trait B<T>: A<T> {} |
| trait C<T>: A<B<T, Output=usize>> {} |
| //~^ ERROR the trait `B` cannot be made into an object |
| |
| fn main() {} |
