| // Copyright 2017 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. |
| |
| #![allow(warnings)] |
| #![feature(in_band_lifetimes)] |
| |
| fn foo(x: &'a u32) -> &'a u32 { x } |
| |
| fn main() { |
| let mut p = 3; |
| let r = foo(&p); |
| p += 1; //~ ERROR cannot assign to `p` because it is borrowed |
| println!("{}", r); |
| } |