constexpr SimpleFixedString()

in cxx/fbjni/detail/SimpleFixedString.h [208:220]


  constexpr SimpleFixedString(
      const Left& left,
      std::size_t left_size,
      const Right& right,
      std::size_t right_size,
      std::index_sequence<Is...>) noexcept
      : data_{detail::fixedstring::char_at_(
                  left,
                  left_size,
                  right,
                  right_size,
                  Is)...,
              '\0'},