rust-lang/rust-clippy

`never_loop`: Note why the loop will never loop.

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#16.056 aberto em 9 de nov. de 2025

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C-enhancementgood first issue

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Description

Description

The reason why a loop will never actually complete isn't always obvious (see #16054 for an example). For such cases it would be nice to have a note pointing out all the locations where this occurs. Obvious causes ideally wouldn't get any additional output.

Examples

loop {
    do_something();
    // No need to point this out.
    panic!();
}
// Imagine something less obvious.
let x = || Some(panic!());

loop {
    // Why doesn't this loop?
    x().unwrap();
}

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