45 lines
1.1 KiB
Rust
45 lines
1.1 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution.
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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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#![deny(clippy::mem_discriminant_non_enum)]
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use std::mem;
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enum Foo {
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One(usize),
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Two(u8),
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}
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struct A(Foo);
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fn main() {
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// bad
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mem::discriminant(&"hello");
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mem::discriminant(&&Some(2));
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mem::discriminant(&&None::<u8>);
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mem::discriminant(&&Foo::One(5));
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mem::discriminant(&&Foo::Two(5));
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mem::discriminant(&A(Foo::One(0)));
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let ro = &Some(3);
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let rro = &ro;
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mem::discriminant(&ro);
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mem::discriminant(rro);
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mem::discriminant(&rro);
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// ok
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mem::discriminant(&Some(2));
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mem::discriminant(&None::<u8>);
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mem::discriminant(&Foo::One(5));
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mem::discriminant(&Foo::Two(5));
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mem::discriminant(ro);
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}
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