67 lines
1.7 KiB
Rust
67 lines
1.7 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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#![warn(clippy::drop_ref, clippy::forget_ref)]
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#![allow(clippy::toplevel_ref_arg, clippy::similar_names, clippy::needless_pass_by_value)]
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use std::mem::{drop, forget};
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struct SomeStruct;
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fn main() {
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drop(&SomeStruct);
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forget(&SomeStruct);
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let mut owned1 = SomeStruct;
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drop(&owned1);
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drop(&&owned1);
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drop(&mut owned1);
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drop(owned1); //OK
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let mut owned2 = SomeStruct;
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forget(&owned2);
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forget(&&owned2);
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forget(&mut owned2);
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forget(owned2); //OK
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let reference1 = &SomeStruct;
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drop(reference1);
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forget(&*reference1);
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let reference2 = &mut SomeStruct;
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drop(reference2);
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let reference3 = &mut SomeStruct;
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forget(reference3);
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let ref reference4 = SomeStruct;
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drop(reference4);
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forget(reference4);
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}
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#[allow(dead_code)]
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fn test_generic_fn_drop<T>(val: T) {
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drop(&val);
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drop(val); //OK
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}
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#[allow(dead_code)]
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fn test_generic_fn_forget<T>(val: T) {
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forget(&val);
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forget(val); //OK
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}
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#[allow(dead_code)]
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fn test_similarly_named_function() {
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fn drop<T>(_val: T) {}
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drop(&SomeStruct); //OK; call to unrelated function which happens to have the same name
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std::mem::drop(&SomeStruct);
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fn forget<T>(_val: T) {}
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forget(&SomeStruct); //OK; call to unrelated function which happens to have the same name
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std::mem::forget(&SomeStruct);
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}
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