Clang incorrect(?) compile time error

// clang++     -std=c++11 clang_error.cpp

#include <iostream>
#include <type_traits>

template <typename ...Ts>
struct other_variant
{
    union U
    {
    } u;

    void init() {} //workarround ... eliminate with metaprogramming
    void get()  {} //workarround ... eliminate with metaprogramming

};

template <typename T, typename ...Ts>
struct other_variant<T, Ts...> : other_variant<Ts...> //private other_variant<Ts...>
{
    typedef other_variant<Ts...> base;


    union U
    {
        T e;
        typename base::U bu;
    } u;



    using base::init;

    void init( T const& value ) //constructor temporal replacement -- need inheriting constructors
    {
        u.e = value;
    }

    using base::get;

    template <typename T2>
    typename std::enable_if<std::is_same<T, T2>::value, T>::type
    get()
    {
        return u.e;
    }

};


int main( /* int argc, char* argv[] */ )
{
    other_variant<int, double> ov;
    ov.init(15.0);
    std::cout << ov.get<double>() << std::endl;
    std::cout << ov.get<int>() << std::endl;            //Compile-time error

    return 0;
}