#include <iostream>
#include <atomic>

#define Q_DECL_NOTHROW noexcept
#define QT_BASIC_ATOMIC_HAS_CONSTRUCTORS

template <typename T> struct QAtomicOps
{
    typedef std::atomic<T> Type;
};

template <typename T>
class QBasicAtomicInteger
{
public:
    typedef QAtomicOps<T> Ops;
    typename Ops::Type _q_value;

#ifdef QT_BASIC_ATOMIC_HAS_CONSTRUCTORS
    QBasicAtomicInteger() = default;
    constexpr QBasicAtomicInteger(T value) Q_DECL_NOTHROW : _q_value(value) {}
    QBasicAtomicInteger(const QBasicAtomicInteger &) = delete;
    QBasicAtomicInteger &operator=(const QBasicAtomicInteger &) = delete;
    QBasicAtomicInteger &operator=(const QBasicAtomicInteger &) volatile = delete;
#endif
};
typedef QBasicAtomicInteger<int> QBasicAtomicInt;

#ifndef Q_BASIC_ATOMIC_INITIALIZER
#  define Q_BASIC_ATOMIC_INITIALIZER(a) { (a) }
#endif 

struct QMetaTypeIdQObject
{
    enum {
        Defined = 1
    };

    static int qt_metatype_id()
    {
        static QBasicAtomicInt metatype_id = Q_BASIC_ATOMIC_INITIALIZER(0);
        return metatype_id._q_value;
    }
}; 

int main()
{
    std::cout << QMetaTypeIdQObject::qt_metatype_id() << std::endl;

    return 0;
}