[Bug c++/84684] inserting random code / flags produces wrong code

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84684

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Or also defining another method in union_composition, like:

    static constexpr auto make_value_to_char1()
    {
        constexpr auto N = sizeof...(alphabet_types);
        return N;
    }

makes it go away.