| // Copyright 2012 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(box_syntax)] |
| |
| struct clam { |
| x: Box<isize>, |
| y: Box<isize>, |
| } |
| |
| struct fish { |
| a: Box<isize>, |
| } |
| |
| fn main() { |
| let a: clam = clam{x: box 1, y: box 2}; |
| let b: clam = clam{x: box 10, y: box 20}; |
| let z: isize = a.x + b.y; |
| //~^ ERROR binary operation `+` cannot be applied to type `std::boxed::Box<isize>` |
| println!("{}", z); |
| assert_eq!(z, 21); |
| let forty: fish = fish{a: box 40}; |
| let two: fish = fish{a: box 2}; |
| let answer: isize = forty.a + two.a; |
| //~^ ERROR binary operation `+` cannot be applied to type `std::boxed::Box<isize>` |
| println!("{}", answer); |
| assert_eq!(answer, 42); |
| } |