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// Copyright 2014 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.
// Creating a stack closure which references an box and then
// transferring ownership of the box before invoking the stack
// closure results in a crash.
#![feature(box_syntax)]
fn twice(x: Box<usize>) -> usize {
*x * 2
}
fn invoke<F>(f: F) where F: FnOnce() -> usize {
f();
}
fn main() {
let x : Box<usize> = box 9;
let sq = || { *x * *x };
twice(x); //~ ERROR: cannot move out of
invoke(sq);
}
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