#define _pick const

#ifdef COMPILER_MSC
#define pick_
#else
#define pick_ const
#endif

template <class T, class B = EmptyClass>
class DeepCopyOption : public B {
public:
	friend T& operator<<=(T& dest, const T& src)
	{ if(&dest != &src) { (&dest)->T::~T(); ::new(&dest) T(src, 1); } return dest; }
	friend void DeepCopyConstruct(void *dest, const T& src)
	{ ::new (dest) T(src, 0); }
	friend T *DeepCopyNew(const T& src)
	{ return ::new T(src, 0); }
};

void Foo(const Vector<int>& b) {
   Vector<int> a;
   a = b;
}