// 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. struct r { i: @mut int, } impl Drop for r { fn finalize(&self) { *(self.i) = *(self.i) + 1; } } fn r(i: @mut int) -> r { r { i: i } } pub fn main() { let i = @mut 0; { let j = ~r(i); } assert *i == 1; }