| // 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. |
| |
| #![feature(match_default_bindings)] |
| |
| enum Wrapper { |
| Wrap(i32), |
| } |
| |
| use Wrapper::Wrap; |
| |
| pub fn main() { |
| let Wrap(x) = &Wrap(3); |
| *x += 1; //~ ERROR cannot assign to immutable |
| |
| |
| if let Some(x) = &Some(3) { |
| *x += 1; //~ ERROR cannot assign to immutable |
| } else { |
| panic!(); |
| } |
| |
| while let Some(x) = &Some(3) { |
| *x += 1; //~ ERROR cannot assign to immutable |
| break; |
| } |
| } |
