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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 | ||
223e47cc | 11 | |
1a4d82fc JJ |
12 | fn borrow<T>(x: &T) -> &T {x} |
13 | ||
14 | fn foo<C, M>(mut cond: C, mut make_box: M) where | |
15 | C: FnMut() -> bool, | |
16 | M: FnMut() -> Box<isize>, | |
17 | { | |
18 | let mut y: &isize; | |
223e47cc | 19 | loop { |
1a4d82fc | 20 | let x = make_box(); |
223e47cc | 21 | |
970d7e83 LB |
22 | // Here we complain because the resulting region |
23 | // of this borrow is the fn body as a whole. | |
ff7c6d11 XL |
24 | y = borrow(&*x); |
25 | //~^ ERROR `*x` does not live long enough | |
223e47cc | 26 | |
970d7e83 | 27 | assert_eq!(*x, *y); |
223e47cc LB |
28 | if cond() { break; } |
29 | } | |
30 | assert!(*y != 0); | |
31 | } | |
32 | ||
33 | fn main() {} |