// Copyright 2014 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)] pub struct Foo; impl Iterator for Foo { fn next(&mut self) -> Option { None } } #[unsafe_destructor] impl Drop for Foo { fn drop(&mut self) { self.next(); } } pub fn foo<'a>(_: Foo<&'a ()>) {} pub fn main() {}