src/test/compile-fail/kindck-impl-type-params-2.rs

   1 // Copyright 2014 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 #![feature(box_syntax)]
  12
  13 use std::marker::MarkerTrait;
  14
  15 trait Foo : MarkerTrait {
  16 }
  17
  18 impl<T:Copy> Foo for T {
  19 }
  20
  21 fn take_param<T:Foo>(foo: &T) { }
  22
  23 fn main() {
  24     let x: Box<_> = box 3;
  25     take_param(&x);
  26     //~^ ERROR the trait `core::marker::Copy` is not implemented
  27 }