| // 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 <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 you can supply `&F` where `F: FnMut()`. |
| |
| #![feature(lang_items)] |
| |
| fn a<F:FnMut() -> i32>(mut f: F) -> i32 { |
| f() |
| } |
| |
| fn b(f: &mut FnMut() -> i32) -> i32 { |
| a(f) |
| } |
| |
| fn c<F:FnMut() -> i32>(f: &mut F) -> i32 { |
| a(f) |
| } |
| |
| fn main() { |
| let z: isize = 7; |
| |
| let x = b(&mut || 22); |
| assert_eq!(x, 22); |
| |
| let x = c(&mut || 22); |
| assert_eq!(x, 22); |
| } |
