src/test/run-pass/issue-7673-cast-generically-implemented-trait.rs

   1 // Copyright 2013 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 /*
  14
  15 #7673 Polymorphically creating traits barely works
  16
  17 */
  18
  19 #![allow(unknown_features)]
  20 #![feature(box_syntax)]
  21
  22 pub fn main() {}
  23
  24 trait A {
  25     fn dummy(&self) { }
  26 }
  27
  28 impl<T: 'static> A for T {}
  29
  30 fn owned2<T: 'static>(a: Box<T>) { a as Box<A>; }
  31 fn owned3<T: 'static>(a: Box<T>) { box a as Box<A>; }