44 lines
1.2 KiB
Rust
44 lines
1.2 KiB
Rust
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// Copyright 2015 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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// Regression test for #23827
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#![feature(core, unboxed_closures)]
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pub struct Prototype {
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pub target: u32
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}
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trait Component {
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fn apply(self, e: u32);
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}
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impl<C: Component> Fn<(C,)> for Prototype {
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extern "rust-call" fn call(&self, (comp,): (C,)) -> Prototype {
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comp.apply(self.target);
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*self
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}
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}
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impl<C: Component> FnMut<(C,)> for Prototype {
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extern "rust-call" fn call_mut(&mut self, (comp,): (C,)) -> Prototype {
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Fn::call(*&self, (comp,))
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}
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}
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impl<C: Component> FnOnce<(C,)> for Prototype {
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//~^ ERROR not all trait items implemented, missing: `Output` [E0046]
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extern "rust-call" fn call_once(self, (comp,): (C,)) -> Prototype {
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Fn::call(&self, (comp,))
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}
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}
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fn main() {}
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