Two conversion operators implemented together in struct tuple from namespace oneapi::dpl::__internal

[SergeyKopienko]

Based on #2013 and comment #2013 (comment)
looks like we have problem in the code

oneDPL/include/oneapi/dpl/pstl/tuple_impl.h

Line 457 in 9a1dada

operator ::std::tuple<U1, U...>() const

:

• we may have the problem that implemented two conversion operators together:

    // conversion to ::std::tuple with the same template arguments
    operator ::std::tuple<T1, T...>() const
    {
        static constexpr ::std::size_t __tuple_size = sizeof...(T) + 1;
        return to_std_tuple(*this, ::std::make_index_sequence<__tuple_size>());
    }

    // conversion to ::std::tuple with the different template arguments
    template <typename U1, typename... U>
    operator ::std::tuple<U1, U...>() const
    {
        constexpr ::std::size_t __tuple_size = sizeof...(T) + 1;
        return to_std_tuple(static_cast<tuple<U1, U...>>(*this), ::std::make_index_sequence<__tuple_size>());
    }