26 lines
731 B
Rust
26 lines
731 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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// Test that `&mut T` implements `DerefMut<T>`
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// pretty-expanded FIXME #23616
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use std::ops::{Deref, DerefMut};
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fn inc<T: Deref<Target=isize> + DerefMut>(mut t: T) {
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*t += 1;
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}
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fn main() {
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let mut x: isize = 5;
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inc(&mut x);
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assert_eq!(x, 6);
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}
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