42 lines
973 B
Rust
42 lines
973 B
Rust
// 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)
|
|
}
|
|
}
|
|
|