https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108414
--- Comment #2 from Евгений Лисицын <amewo22370 at gmail dot com> ---
(In reply to Andrew Pinski from comment #1)
> > using nth_element_t = typename decltype([]<typename T>(const indexed<I,
> > T>&){return std::type_identity<T>{};}(make_indexer<Ts...>()))::type;
>
> There are some known issue with lambda inside a decltype which seems like
> might be causing issues here ...
interesting that 'typedef' and 'using' have different behavior
