src/test/run-pass/autoderef-method-priority.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 // pretty-expanded FIXME #23616
  12
  13 #![allow(unknown_features)]
  14 #![feature(box_syntax)]
  15
  16 trait double {
  17     fn double(self) -> usize;
  18 }
  19
  20 impl double for usize {
  21     fn double(self) -> usize { self }
  22 }
  23
  24 impl double for Box<usize> {
  25     fn double(self) -> usize { *self * 2 }
  26 }
  27
  28 pub fn main() {
  29     let x: Box<_> = box 3;
  30     assert_eq!(x.double(), 6);
  31 }