// 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. fn borrow(x: &T) -> &T {x} fn foo(mut cond: C, mut make_box: M) where C: FnMut() -> bool, M: FnMut() -> Box, { let mut y: &isize; loop { let x = make_box(); // Here we complain because the resulting region // of this borrow is the fn body as a whole. y = borrow(&*x); //~ ERROR `*x` does not live long enough assert_eq!(*x, *y); if cond() { break; } } assert!(*y != 0); } fn main() {}