non-type template argument is not a constant expression

[chlict]

rev: f79f4ac
Compile error：

AllocTensor.hpp:49:81: error: non-type template argument is not a constant expression
        static_assert(hana::contains(decltype(hana::keys(map))(), hana::llong_c<lhs.getI()>));

Source code：

    if constexpr (is_temp<std::remove_reference_t<Lhs> >) {
        static_assert(hana::contains(decltype(hana::keys(map))(), hana::llong_c<lhs.getI()>));
    }

lhs.getI()是个temp_placeholder<1> &，lhs.getI()也是constexpr返回类型的函数，但是编译器不能正确识别。