src/test/ui/run-pass/generics/generic-object.rs

   1 // Copyright 2012 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 // run-pass
  12 #![feature(box_syntax)]
  13
  14 trait Foo<T> {
  15     fn get(&self) -> T;
  16 }
  17
  18 struct S {
  19     x: isize
  20 }
  21
  22 impl Foo<isize> for S {
  23     fn get(&self) -> isize {
  24         self.x
  25     }
  26 }
  27
  28 pub fn main() {
  29     let x = box S { x: 1 };
  30     let y = x as Box<Foo<isize>>;
  31     assert_eq!(y.get(), 1);
  32 }