| // Copyright 2014 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(box_syntax, rustc_attrs)] |
| |
| struct Foo { a: isize, b: isize } |
| |
| fn main() { #![rustc_error] // rust-lang/rust#49855 |
| let mut x: Box<_> = box Foo { a: 1, b: 2 }; |
| let (a, b) = (&mut x.a, &mut x.b); |
| //~^ ERROR cannot borrow `x` (via `x.b`) as mutable more than once at a time |
| |
| let mut foo: Box<_> = box Foo { a: 1, b: 2 }; |
| let (c, d) = (&mut foo.a, &foo.b); |
| //~^ ERROR cannot borrow `foo` (via `foo.b`) as immutable |
| } |
