gcc/testsuite/rust/execute/torture/enum_intrinsics2.rs


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#![feature(intrinsics)]

#[lang = "sized"]
pub trait Sized {}

enum BookFormat {
    Paperback,
    Hardback,
    Ebook,
}

mod core {
    mod intrinsics {
        extern "rust-intrinsic" {
            #[rustc_const_unstable(feature = "variant_count", issue = "73662")]
            pub fn variant_count<T>() -> usize;
        }
    }
}

pub fn main() -> i32 {
    let count = core::intrinsics::variant_count::<BookFormat>();

    (count as i32) - 3
}