I get the following compile warning with qqmlprivate.h now when I'm using MSVC 2017 64-bit kit.

C:\qt\Qt5.12.0_Beta1\5.12.0\msvc2017_64\include\QtQml\qqmlprivate.h:115: warning: C4291: 'void *operator new(::size_t,void *) throw()': no matching operator delete found; memory will not be freed if initialization throws an exception

On this line:

template<typename T>
void createInto(void *memory)

And it gets invoked when I call "qmlRegisterType<T>(...);" in my code.

Not a major problem, but I wasn't getting this before with previous versions of Qt - not even 5.11.2.