Do you know how to fix almost every one of these cases for good? Just don't allow implicit copying of your classes. Problem solved. If someone tries to write that horrible code, they can't.

This is more a question of knowing what you are doing and less of C++ sucking. C doesn't solve this - you still have to know what you are doing there or you end up shooting yourself in the foot. I much prefer having an interface with virtual methods to a struct with function pointers.