| // 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. |
| |
| // Test that the call operator autoderefs when calling a bounded type parameter. |
| |
| use std::ops::FnMut; |
| |
| fn call_with_2(x: &fn(isize) -> isize) -> isize |
| { |
| x(2) // look ma, no `*` |
| } |
| |
| fn subtract_22(x: isize) -> isize { x - 22 } |
| |
| pub fn main() { |
| let subtract_22: fn(isize) -> isize = subtract_22; |
| let z = call_with_2(&subtract_22); |
| assert_eq!(z, -20); |
| } |
