File: forbidden-discriminant-kind-impl.rs

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#![feature(discriminant_kind)]

use std::marker::DiscriminantKind;

enum Uninhabited {}

struct NewType;

impl DiscriminantKind for NewType {
    //~^ ERROR explicit impls for the `DiscriminantKind` trait are not permitted
    type Discriminant = Uninhabited;
}

fn main() {}