| // 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. |
| |
| #[cfg(feature = "use_core")] |
| extern crate core; |
| |
| #[macro_use] |
| extern crate derivative; |
| |
| #[derive(Derivative)] |
| #[derivative(Debug)] |
| struct MyStruct; |
| |
| trait Repro { |
| fn repro(self, s: MyStruct) -> String; |
| } |
| |
| impl<F> Repro for F where F: FnOnce(MyStruct) -> String { |
| fn repro(self, s: MyStruct) -> String { |
| self(s) |
| } |
| } |
| |
| fn do_stuff<R: Repro>(r: R) -> String { |
| r.repro(MyStruct) |
| } |
| |
| #[test] |
| fn main() { |
| assert_eq!("MyStruct".to_string(), do_stuff(|s: MyStruct| format!("{:?}", s))); |
| } |
