| // 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. |
| |
| // compile-flags: -Z borrowck=mir -Z two-phase-borrows |
| |
| // This is the third counter-example from Niko's blog post |
| // smallcultfollowing.com/babysteps/blog/2017/03/01/nested-method-calls-via-two-phase-borrowing/ |
| // |
| // It shows that not all nested method calls on `self` are magically |
| // allowed by this change. In particular, a nested `&mut` borrow is |
| // still disallowed. |
| |
| fn main() { |
| |
| |
| let mut vec = vec![0, 1]; |
| vec.get({ |
| |
| vec.push(2); |
| //~^ ERROR cannot borrow `vec` as mutable because it is also borrowed as immutable |
| |
| 0 |
| }); |
| } |
