40 lines
834 B
Rust
40 lines
834 B
Rust
// 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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use std::ops::{Deref, DerefMut};
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struct Foo;
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impl Foo {
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fn foo_mut(&mut self) {}
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}
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struct Bar(Foo);
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impl Deref for Bar {
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type Target = Foo;
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fn deref(&self) -> &Foo {
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&self.0
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}
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}
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impl DerefMut for Bar {
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fn deref_mut(&mut self) -> &mut Foo {
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&mut self.0
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}
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}
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fn test(mut bar: Box<Bar>) {
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bar.foo_mut();
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}
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fn main() {}
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