| // Copyright 2013 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. |
| |
| // Testing guarantees provided by once functions. |
| // This program would segfault if it were legal. |
| |
| #![feature(once_fns)] |
| use std::sync::Arc; |
| |
| fn foo<F:FnOnce()>(blk: F) { |
| blk(); |
| blk(); //~ ERROR use of moved value |
| } |
| |
| fn main() { |
| let x = Arc::new(true); |
| foo(move|| { |
| assert!(*x); |
| drop(x); |
| }); |
| } |
