src/test/run-pass/issue-2288.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 clam<A> {
  17   fn chowder(&self, y: A);
  18 }
  19
  20 #[derive(Copy, Clone)]
  21 struct foo<A> {
  22   x: A,
  23 }
  24
  25 impl<A> clam<A> for foo<A> {
  26   fn chowder(&self, _y: A) {
  27   }
  28 }
  29
  30 fn foo<A>(b: A) -> foo<A> {
  31     foo {
  32         x: b
  33     }
  34 }
  35
  36 fn f<A>(x: Box<clam<A>>, a: A) {
  37   x.chowder(a);
  38 }
  39
  40 pub fn main() {
  41
  42   let c = foo(42);
  43   let d: Box<clam<isize>> = box c as Box<clam<isize>>;
  44   f(d, c.x);
  45 }