// Copyright 2012 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. #![feature(unsafe_destructor)] use std::cell::Cell; #[derive(Debug)] struct r<'a> { i: &'a Cell, } #[unsafe_destructor] impl<'a> Drop for r<'a> { fn drop(&mut self) { unsafe { self.i.set(self.i.get() + 1); } } } fn f(__isize: Vec , _j: Vec ) { } fn clone(t: &T) -> T { t.clone() } fn main() { let i1 = &Cell::new(0); let i2 = &Cell::new(1); // FIXME (#22405): Replace `Box::new` with `box` here when/if possible. let r1 = vec!(Box::new(r { i: i1 })); let r2 = vec!(Box::new(r { i: i2 })); f(clone(&r1), clone(&r2)); //~^ ERROR the trait `core::clone::Clone` is not implemented for the type //~^^ ERROR the trait `core::clone::Clone` is not implemented for the type println!("{:?}", (r2, i1.get())); println!("{:?}", (r1, i2.get())); }