1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // Test that unboxed closures in contexts with free type parameters
12 // monomorphize correctly (issue #16791)
14 #![allow(unknown_features)]
15 #![feature(box_syntax)]
16 #![feature(unboxed_closures, core)]
19 fn bar<'a, T:Clone+'a> (t: T) -> Box<FnMut()->T + 'a> {
20 // FIXME (#22405): Replace `Box::new` with `box` here when/if possible.
21 Box::new(move || t.clone())
24 let mut f = bar(42_u32);
25 assert_eq!(f.call_mut(()), 42);
27 let mut f = bar("forty-two");
28 assert_eq!(f.call_mut(()), "forty-two");
32 assert_eq!(f.call_mut(()), &x);
34 #[derive(Clone, Copy, Debug, PartialEq)]
35 struct Foo(usize, &'static str);
37 let x = Foo(42, "forty-two");
39 assert_eq!(f.call_mut(()), x);