| // Copyright 2015 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. |
| |
| use std::mem; |
| |
| pub struct X([u8]); |
| |
| fn _f(x: &X) -> usize { match *x { X(ref x) => { x.len() } } } |
| |
| fn main() { |
| let b: &[u8] = &[11; 42]; |
| let v: &X = unsafe { mem::transmute(b) }; |
| assert_eq!(_f(v), 42); |
| } |