src/tools/clippy/tests/ui/empty_enums.rs

#![warn(clippy::empty_enums)]
// Enable never type to test empty enum lint

enum Empty {}
//~^ empty_enums

mod issue15910 {
    enum NotReallyEmpty {
        #[cfg(false)]
        Hidden,
    }

    enum OneVisibleVariant {
        #[cfg(false)]
        Hidden,
        Visible,
    }

    enum CfgInsideVariant {
        Variant(#[cfg(false)] String),
    }
}

fn main() {}