// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. use std::cast::transmute; use std::libc::c_void; struct NonCopyable(*c_void); impl Drop for NonCopyable { fn drop(&self) { let p = **self; let v = unsafe { transmute::<*c_void, ~int>(p) }; } } fn main() { let t = ~0; let p = unsafe { transmute::<~int, *c_void>(t) }; let z = NonCopyable(p); }