> Notable unsupported constructs include: union, volatile, goto, exceptions, bitfields, placement new, user-defined copy/move constructors, dynamic_cast, const_cast, base classes with fields or non-virtual methods, multiple inheritance, and multi-threaded code.

Lol, “user defined copy/move constructors” That’s actually so many types that would define this

So, most C++ code I have seen in my forty years of coding.