src/test/run-pass/issue-4735.rs

   1 // Copyright 2013 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.
   4 //
   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.
  10
  11 // pretty-expanded FIXME #23616
  12
  13 use std::mem::transmute;
  14
  15 struct NonCopyable(*const u8);
  16
  17 impl Drop for NonCopyable {
  18     fn drop(&mut self) {
  19         let NonCopyable(p) = *self;
  20         let _v = unsafe { transmute::<*const u8, Box<isize>>(p) };
  21     }
  22 }
  23
  24 pub fn main() {
  25     let t = Box::new(0);
  26     let p = unsafe { transmute::<Box<isize>, *const u8>(t) };
  27     let _z = NonCopyable(p);
  28 }