tests/ui/const-generics/mgca/adt_expr_unit_enum_extra_field.rs

#![feature(min_generic_const_args, adt_const_params)]

#[derive(Eq, PartialEq, std::marker::ConstParamTy)]
enum E {
    S {}
}

fn foo<const N: E>() {}

fn main() {
    foo::<{E::S { x: const { 1 } }}>();
        //~^ ERROR variant `E::S` has no field named `x` [E0559]
}