[rustc.git] / src / test / compile-fail / unboxed-closures-borrow-conflict.rs

// 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.

#![feature(unboxed_closures)]

// Test that an unboxed closure that mutates a free variable will
// cause borrow conflicts.

fn main() {
    let mut x = 0;
    let f = || x += 1;
    let _y = x; //~ ERROR cannot use `x` because it was mutably borrowed
}
Commit	Line	Data
1a4d82fc	1	// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
223e47cc LB	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
1a4d82fc JJ	11	#![feature(unboxed_closures)]
	12
	13	// Test that an unboxed closure that mutates a free variable will
	14	// cause borrow conflicts.
223e47cc LB	15
223e47cc LB	16	fn main() {
c34b1796	17	let mut x = 0;
85aaf69f	18	let f = \|\| x += 1;
1a4d82fc	19	let _y = x; //~ ERROR cannot use `x` because it was mutably borrowed
223e47cc	20	}