rust/src/test/compile-fail/copy-a-resource.rs

// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

struct foo {
  i: int,
}

impl Drop for foo {
    fn drop(&self) {}
}

fn foo(i:int) -> foo {
    foo {
        i: i
    }
}

fn main() {
    let x = foo(10);
    let _y = copy x;
    //~^ ERROR copying a value of non-copyable type `foo`
    error!(x);
}