1 // Copyright 2018 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
17 #[derive(Copy, Clone)]
24 #[derive(Copy, Clone)]
35 // the value is not valid for bools
36 const BAD_BOOL: bool = unsafe { DummyUnion { u8: 42 }.bool};
37 //~^ ERROR this constant likely exhibits undefined behavior
39 // The value is not valid for any union variant, but that's fine
40 // unions are just a convenient way to transmute bits around
41 const BAD_UNION: Foo = unsafe { Bar { u8: 42 }.foo };