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rust-clippy/tests/ui/missing_spin_loop.rs

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// run-rustfix
#![warn(clippy::missing_spin_loop)]
#![allow(clippy::bool_comparison)]
#![allow(unused_braces)]
use core::sync::atomic::{AtomicBool, Ordering};
fn main() {
let b = AtomicBool::new(true);
// Those should lint
while b.load(Ordering::Acquire) {}
while !b.load(Ordering::SeqCst) {}
while b.load(Ordering::Acquire) == false {}
while { true == b.load(Ordering::Acquire) } {}
while b.compare_exchange(true, false, Ordering::Acquire, Ordering::Relaxed) != Ok(true) {}
while Ok(false) != b.compare_exchange(false, true, Ordering::Acquire, Ordering::Relaxed) {}
// This is OK, as the body is not empty
while b.load(Ordering::Acquire) {
std::hint::spin_loop()
}
// TODO: also match on loop+match or while let
}