src/test/run-pass/deriving-default-box.rs

   1 // Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11
  12 #![allow(unknown_features)]
  13 #![feature(box_syntax)]
  14
  15 use std::default::Default;
  16
  17 #[derive(Default)]
  18 struct A {
  19     foo: Box<[bool]>,
  20 }
  21
  22 pub fn main() {
  23     let a: A = Default::default();
  24     let b: Box<[_]> = Box::<[bool; 0]>::new([]);
  25     assert_eq!(a.foo, b);
  26 }