| // Copyright 2016 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(untagged_unions)] |
| |
| #[derive(Clone, Copy)] |
| struct Copy; |
| struct NonCopy; |
| |
| union Unn { |
| n1: NonCopy, |
| n2: NonCopy, |
| } |
| union Ucc { |
| c1: Copy, |
| c2: Copy, |
| } |
| union Ucn { |
| c: Copy, |
| n: NonCopy, |
| } |
| |
| fn main() { |
| unsafe { |
| // 2 NonCopy |
| { |
| let mut u = Unn { n1: NonCopy }; |
| let a = u.n1; |
| let a = u.n1; //~ ERROR use of moved value: `u.n1` |
| } |
| { |
| let mut u = Unn { n1: NonCopy }; |
| let a = u.n1; |
| let a = u; //~ ERROR use of partially moved value: `u` |
| } |
| { |
| let mut u = Unn { n1: NonCopy }; |
| let a = u.n1; |
| let a = u.n2; //~ ERROR use of moved value: `u.n2` |
| } |
| // 2 Copy |
| { |
| let mut u = Ucc { c1: Copy }; |
| let a = u.c1; |
| let a = u.c1; // OK |
| } |
| { |
| let mut u = Ucc { c1: Copy }; |
| let a = u.c1; |
| let a = u; // OK |
| } |
| { |
| let mut u = Ucc { c1: Copy }; |
| let a = u.c1; |
| let a = u.c2; // OK |
| } |
| // 1 Copy, 1 NonCopy |
| { |
| let mut u = Ucn { c: Copy }; |
| let a = u.c; |
| let a = u.c; // OK |
| } |
| { |
| let mut u = Ucn { c: Copy }; |
| let a = u.n; |
| let a = u.n; //~ ERROR use of moved value: `u.n` |
| } |
| { |
| let mut u = Ucn { c: Copy }; |
| let a = u.n; |
| let a = u.c; //~ ERROR use of moved value: `u.c` |
| } |
| { |
| let mut u = Ucn { c: Copy }; |
| let a = u.c; |
| let a = u.n; // OK |
| } |
| { |
| let mut u = Ucn { c: Copy }; |
| let a = u.c; |
| let a = u; // OK |
| } |
| { |
| let mut u = Ucn { c: Copy }; |
| let a = u.n; |
| let a = u; //~ ERROR use of partially moved value: `u` |
| } |
| } |
| } |