int main(int, char**) {
    test_bullet_one();
    test_bullet_two();
    test_bullet_three();

  return 0;
}
int main() {
    test_bullet_one();
    test_bullet_two();
    test_bullet_three();
}
int main(int, char**)
{
    static_assert((std::is_same<std::common_type<int>::type, int>::value), "");
    static_assert((std::is_same<std::common_type<char>::type, char>::value), "");
#if TEST_STD_VER > 11
    static_assert((std::is_same<std::common_type_t<int>,   int>::value), "");
    static_assert((std::is_same<std::common_type_t<char>, char>::value), "");
#endif

    static_assert((std::is_same<std::common_type<               int>::type, int>::value), "");
    static_assert((std::is_same<std::common_type<const          int>::type, int>::value), "");
    static_assert((std::is_same<std::common_type<      volatile int>::type, int>::value), "");
    static_assert((std::is_same<std::common_type<const volatile int>::type, int>::value), "");

    static_assert((std::is_same<std::common_type<int,           int>::type, int>::value), "");
    static_assert((std::is_same<std::common_type<int,     const int>::type, int>::value), "");

    static_assert((std::is_same<std::common_type<long,       const int>::type, long>::value), "");
    static_assert((std::is_same<std::common_type<const long,       int>::type, long>::value), "");
    static_assert((std::is_same<std::common_type<long,    volatile int>::type, long>::value), "");
    static_assert((std::is_same<std::common_type<volatile long,    int>::type, long>::value), "");
    static_assert((std::is_same<std::common_type<const long, const int>::type, long>::value), "");

    static_assert((std::is_same<std::common_type<double, char>::type, double>::value), "");
    static_assert((std::is_same<std::common_type<short, char>::type, int>::value), "");
#if TEST_STD_VER > 11
    static_assert((std::is_same<std::common_type_t<double, char>, double>::value), "");
    static_assert((std::is_same<std::common_type_t<short, char>, int>::value), "");
#endif

    static_assert((std::is_same<std::common_type<double, char, long long>::type, double>::value), "");
    static_assert((std::is_same<std::common_type<unsigned, char, long long>::type, long long>::value), "");
#if TEST_STD_VER > 11
    static_assert((std::is_same<std::common_type_t<double, char, long long>, double>::value), "");
    static_assert((std::is_same<std::common_type_t<unsigned, char, long long>, long long>::value), "");
#endif

    static_assert((std::is_same<std::common_type<               void>::type, void>::value), "");
    static_assert((std::is_same<std::common_type<const          void>::type, void>::value), "");
    static_assert((std::is_same<std::common_type<      volatile void>::type, void>::value), "");
    static_assert((std::is_same<std::common_type<const volatile void>::type, void>::value), "");

    static_assert((std::is_same<std::common_type<void,       const void>::type, void>::value), "");
    static_assert((std::is_same<std::common_type<const void,       void>::type, void>::value), "");
    static_assert((std::is_same<std::common_type<void,    volatile void>::type, void>::value), "");
    static_assert((std::is_same<std::common_type<volatile void,    void>::type, void>::value), "");
    static_assert((std::is_same<std::common_type<const void, const void>::type, void>::value), "");

    static_assert((std::is_same<std::common_type<int, S<int> >::type, S<int> >::value), "");
    static_assert((std::is_same<std::common_type<int, S<int>, S<int> >::type, S<int> >::value), "");
    static_assert((std::is_same<std::common_type<int, int, S<int> >::type, S<int> >::value), "");


  test_bullet_one();
  test_bullet_two();
  test_bullet_three_one();
  test_bullet_three_two();
  test_bullet_four();

//  P0548
    static_assert((std::is_same<std::common_type<S<int> >::type,         S<int> >::value), "");
    static_assert((std::is_same<std::common_type<S<int>, S<int> >::type, S<int> >::value), "");

    static_assert((std::is_same<std::common_type<int>::type,                int>::value), "");
    static_assert((std::is_same<std::common_type<const int>::type,          int>::value), "");
    static_assert((std::is_same<std::common_type<volatile int>::type,       int>::value), "");
    static_assert((std::is_same<std::common_type<const volatile int>::type, int>::value), "");

    static_assert((std::is_same<std::common_type<int, int>::type,             int>::value), "");
    static_assert((std::is_same<std::common_type<const int, int>::type,       int>::value), "");
    static_assert((std::is_same<std::common_type<int, const int>::type,       int>::value), "");
    static_assert((std::is_same<std::common_type<const int, const int>::type, int>::value), "");

#if TEST_STD_VER >= 11
    // Test that we're really variadic in C++11
    static_assert(std::is_same<std::common_type<int, int, int, int, int, int, int, int>::type, int>::value, "");
#endif

  return 0;
}