src/test/run-pass/issue-2734.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 hax {
  17     fn dummy(&self) { }
  18 }
  19 impl<A> hax for A { }
  20
  21 fn perform_hax<T: 'static>(x: Box<T>) -> Box<hax+'static> {
  22     box x as Box<hax+'static>
  23 }
  24
  25 fn deadcode() {
  26     perform_hax(box "deadcode".to_string());
  27 }
  28
  29 pub fn main() {
  30     let _ = perform_hax(box 42);
  31 }