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