rust/src/test/run-pass/issue-3563-2.rs

// 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.

#[allow(default_methods)]
trait Canvas {
    fn add_point(point: &int);
    fn add_points(shapes: &[int]) {
        for shapes.each |pt| {
            self.add_point(pt)
        }
    }

}

pub fn main() {}