mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-21 07:01:54 +00:00
0a6bc6031a
And fixes false-positives for generics and `match`
39 lines
717 B
Rust
39 lines
717 B
Rust
#![feature(plugin)]
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#![plugin(clippy)]
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#![deny(needless_pass_by_value)]
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#![allow(dead_code)]
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// `v` will be warned
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// `w`, `x` and `y` are allowed (moved or mutated)
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fn foo<T: Default>(v: Vec<T>, w: Vec<T>, mut x: Vec<T>, y: Vec<T>) -> Vec<T> {
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assert_eq!(v.len(), 42);
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consume(w);
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x.push(T::default());
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y
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}
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fn consume<T>(_: T) {}
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struct Wrapper(String);
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fn bar(x: String, y: Wrapper) {
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assert_eq!(x.len(), 42);
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assert_eq!(y.0.len(), 42);
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}
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fn test_borrow_trait<T: std::borrow::Borrow<str>, U>(t: T, u: U) {
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// U implements `Borrow<U>`, but warned correctly
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println!("{}", t.borrow());
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consume(&u);
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}
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// ok
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fn test_fn<F: Fn(i32) -> i32>(f: F) {
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f(1);
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}
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fn main() {}
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