| // Copyright 2014 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. |
| |
| use std::ops::Add; |
| |
| trait BrokenAdd: Copy + Add<Output=Self> { |
| fn broken_add<T>(&self, rhs: T) -> Self { |
| *self + rhs //~ ERROR mismatched types |
| //~| expected type `Self` |
| //~| found type `T` |
| //~| expected Self, found type parameter |
| } |
| } |
| |
| impl<T: Copy + Add<Output=T>> BrokenAdd for T {} |
| |
| pub fn main() { |
| let foo: u8 = 0; |
| let x: u8 = foo.broken_add("hello darkness my old friend".to_string()); |
| println!("{}", x); |
| } |
