36 lines
1.0 KiB
Rust
36 lines
1.0 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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use std::marker::MarkerTrait;
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struct MyType;
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impl MyType {
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const IMPL_IS_INHERENT: bool = true;
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}
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trait MyTrait: MarkerTrait {
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const IMPL_IS_INHERENT: bool;
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const IMPL_IS_ON_TRAIT: bool;
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}
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impl MyTrait for MyType {
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const IMPL_IS_INHERENT: bool = false;
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const IMPL_IS_ON_TRAIT: bool = true;
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}
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fn main() {
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// Check that the inherent impl is used before the trait, but that the trait
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// can still be accessed.
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assert!(<MyType>::IMPL_IS_INHERENT);
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assert!(!<MyType as MyTrait>::IMPL_IS_INHERENT);
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assert!(<MyType>::IMPL_IS_ON_TRAIT);
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}
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