a80d329b68
They are already gated with feature `fn_traits`
23 lines
741 B
Rust
23 lines
741 B
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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use std::marker::PhantomData;
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#[derive(Debug)]
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struct LifetimeStruct<'a>(PhantomData<&'a ()>);
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fn main() {
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takes_hrtb_closure(|lts| println!("{:?}", lts));
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}
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fn takes_hrtb_closure<F: for<'a>FnMut(LifetimeStruct<'a>)>(mut f: F) {
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f(LifetimeStruct(PhantomData));
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}
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