| // Copyright 2013 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. |
| |
| |
| // pretty-expanded FIXME #23616 |
| |
| #![allow(unknown_features)] |
| #![feature(box_syntax, libc)] |
| |
| extern crate libc; |
| |
| use std::mem::transmute; |
| use libc::c_void; |
| |
| struct NonCopyable(*const c_void); |
| |
| impl Drop for NonCopyable { |
| fn drop(&mut self) { |
| let NonCopyable(p) = *self; |
| let _v = unsafe { transmute::<*const c_void, Box<isize>>(p) }; |
| } |
| } |
| |
| pub fn main() { |
| let t = box 0; |
| let p = unsafe { transmute::<Box<isize>, *const c_void>(t) }; |
| let _z = NonCopyable(p); |
| } |
