rust/src/test/run-pass/borrowck-preserve-box-sometimes-needed.rs
2013-03-15 18:27:15 -04:00

25 lines
698 B
Rust

// 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.
// exec-env:RUST_POISON_ON_FREE=1
fn switcher(x: Option<@int>) {
let mut x = x;
match x {
Some(@y) => { y.clone(); x = None; }
None => { }
}
}
pub fn main() {
switcher(None);
switcher(Some(@3));
}