| // Copyright 2016 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. |
| |
| // Test that a borrow which starts as a 2-phase borrow and gets |
| // carried around a loop winds up conflicting with itself. |
| |
| #![feature(nll)] |
| |
| struct Foo { x: String } |
| |
| impl Foo { |
| fn get_string(&mut self) -> &str { |
| &self.x |
| } |
| } |
| |
| fn main() { |
| let mut foo = Foo { x: format!("Hello, world") }; |
| let mut strings = vec![]; |
| |
| loop { |
| strings.push(foo.get_string()); //~ ERROR cannot borrow `foo` as mutable |
| if strings.len() > 2 { break; } |
| } |
| |
| println!("{:?}", strings); |
| } |
