60 lines
1.4 KiB
Rust
60 lines
1.4 KiB
Rust
// run-rustfix
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// The output for humans should just highlight the whole span without showing
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// the suggested replacement, but we also want to test that suggested
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// replacement only removes one set of parentheses, rather than naïvely
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// stripping away any starting or ending parenthesis characters—hence this
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// test of the JSON error format.
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#![feature(custom_inner_attributes)]
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#![rustfmt::skip]
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#![deny(clippy::unused_unit)]
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#![allow(dead_code)]
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struct Unitter;
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impl Unitter {
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// try to disorient the lint with multiple unit returns and newlines
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#[allow(clippy::no_effect)]
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pub fn get_unit<F: Fn() -> (), G>(&self, f: F, _g: G)
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where G: Fn() -> () {
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let _y: &dyn Fn() -> () = &f;
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(); // this should not lint, as it's not in return type position
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}
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}
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impl Into<()> for Unitter {
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#[rustfmt::skip]
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fn into(self) {
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}
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}
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fn return_unit() { }
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#[allow(clippy::needless_return)]
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#[allow(clippy::never_loop)]
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#[allow(clippy::unit_cmp)]
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fn main() {
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let u = Unitter;
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assert_eq!(u.get_unit(|| {}, return_unit), u.into());
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return_unit();
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loop {
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break;
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}
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return;
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}
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// https://github.com/rust-lang/rust-clippy/issues/4076
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fn foo() {
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macro_rules! foo {
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(recv($r:expr) -> $res:pat => $body:expr) => {
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$body
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}
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}
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foo! {
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recv(rx) -> _x => ()
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}
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}
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