[rustc.git] / src / test / ui / run-pass / regions / regions-infer-call-2.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.

// run-pass

fn takes_two(x: &isize, y: &isize) -> isize { *x + *y }

fn with<T, F>(f: F) -> T where F: FnOnce(&isize) -> T {
    f(&20)
}

fn has_one<'a>(x: &'a isize) -> isize {
    with(|y| takes_two(x, y))
}

pub fn main() {
    assert_eq!(has_one(&2), 22);
}
Commit	Line	Data
223e47cc LB	1	// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
	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
b7449926	11	// run-pass
223e47cc	12
c34b1796 AL	13	fn takes_two(x: &isize, y: &isize) -> isize { x + y }
	14
	15	fn with<T, F>(f: F) -> T where F: FnOnce(&isize) -> T {
223e47cc LB	16	f(&20)
	17	}
	18
c34b1796	19	fn has_one<'a>(x: &'a isize) -> isize {
1a4d82fc	20	with(\|y\| takes_two(x, y))
223e47cc LB	21	}
	22
	23	pub fn main() {
970d7e83	24	assert_eq!(has_one(&2), 22);
223e47cc	25	}