38 lines
1.1 KiB
Rust
38 lines
1.1 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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extern crate debug;
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use std::gc::{Gc, GC};
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struct clam {
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x: Gc<int>,
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y: Gc<int>,
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}
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struct fish {
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a: Gc<int>,
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}
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fn main() {
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let a: clam = clam{x: box(GC) 1, y: box(GC) 2};
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let b: clam = clam{x: box(GC) 10, y: box(GC) 20};
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let z: int = a.x + b.y; //~ ERROR binary operation `+` cannot be applied to type `Gc<int>`
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println!("{:?}", z);
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assert_eq!(z, 21);
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let forty: fish = fish{a: box(GC) 40};
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let two: fish = fish{a: box(GC) 2};
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let answer: int = forty.a + two.a;
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//~^ ERROR binary operation `+` cannot be applied to type `Gc<int>`
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println!("{:?}", answer);
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assert_eq!(answer, 42);
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}
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