| // Copyright 2018 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. |
| |
| // Regression test for issue #27868 |
| |
| #![feature(nll)] |
| |
| use std::ops::AddAssign; |
| |
| struct MyVec<T>(Vec<T>); |
| |
| impl <T> Drop for MyVec<T> { |
| fn drop(&mut self) { |
| println!("Being dropped."); |
| } |
| } |
| |
| impl<T> AddAssign<T> for MyVec<T> { |
| fn add_assign(&mut self, _elem: T) { |
| println!("In add_assign."); |
| } |
| } |
| |
| fn main() { |
| let mut vec = MyVec(vec![0]); |
| let mut vecvec = vec![vec]; |
| |
| vecvec[0] += { |
| vecvec = vec![]; |
| //~^ ERROR cannot assign to `vecvec` because it is borrowed [E0506] |
| 0 |
| }; |
| } |