| // 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. |
| |
| #![deny(dead_code)] |
| |
| union Foo { |
| x: usize, |
| b: bool, //~ ERROR: field is never used |
| _unused: u16, |
| } |
| |
| fn field_read(f: Foo) -> usize { |
| unsafe { f.x } |
| } |
| |
| fn main() { |
| let _ = field_read(Foo { x: 2 }); |
| } |
