PIlin

#include <iostream>
using namespace std;

template <typename T, typename U>
struct Base
{
	void TestBase(void* ptr) //__attribute__ ((noinline))
	{
		U& ref = *reinterpret_cast<U*>(ptr);
		static_cast<T*>(this)->Test(ref);

PIlin

#include <iostream>
#include <type_traits>

template<class T> class HasTypeTag {
	// This version doesn't work as intended in GCC
	template<class C> static std::true_type test(char[sizeof(C::TypeTag)]);
	// This version works in GCC, Clang and VS2013
	//template<class C> static auto test(void*) -> decltype(C::TypeTag, std::true_type());
	template<class C> static std::false_type test(...);
public:

PIlin

template <int A> struct aligned;
template <> struct __declspec(align(1)) aligned < 1 > {};
template <> struct __declspec(align(2)) aligned < 2 > {};
template <> struct __declspec(align(4)) aligned < 4 > {};
template <> struct __declspec(align(8)) aligned < 8 > {};
template <> struct __declspec(align(16)) aligned < 16 > {};
template <> struct __declspec(align(32)) aligned < 32 > {};

template <int size, int align>
union aligned_type {