Method operator new

tests/test_factory_constructors.cpp:346–350

    public:
        explicit NoPlacementNew(int i) : i(i) {}
        static void *operator new(std::size_t s) {
            auto *p = ::operator new(s);
            py::print("operator new called, returning", reinterpret_cast<uintptr_t>(p));
            return p;
        }
        static void operator delete(void *p) {
            py::print("operator delete called on", reinterpret_cast<uintptr_t>(p));
            ::operator delete(p);