| // 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 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| #![allow(dead_code)] |
| |
| trait Deref { |
| fn get(self) -> isize; |
| } |
| |
| impl<'a> Deref for &'a isize { |
| fn get(self) -> isize { |
| *self |
| } |
| } |
| |
| fn with<R:Deref, F>(f: F) -> isize where F: FnOnce(&isize) -> R { |
| f(&3).get() |
| } |
| |
| fn return_it() -> isize { |
| with(|o| o) //~ ERROR cannot infer |
| } |
| |
| fn main() { |
| } |
