| // 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(unused)] |
| #![feature(nll)] |
| |
| #[derive(Clone, Copy, Default)] |
| struct S { |
| a: u8, |
| b: u8, |
| } |
| #[derive(Clone, Copy, Default)] |
| struct Z { |
| c: u8, |
| d: u8, |
| } |
| |
| union U { |
| s: S, |
| z: Z, |
| } |
| |
| fn main() { |
| unsafe { |
| let mut u = U { s: Default::default() }; |
| |
| let mref = &mut u.s.a; |
| *mref = 22; |
| |
| let nref = &u.z.c; |
| //~^ ERROR cannot borrow `u.z.c` as immutable because it is also borrowed as mutable [E0502] |
| println!("{} {}", mref, nref) |
| } |
| } |
| |
