Please describe the problem:
I tried to declare a virtual method in an abstract class as abstract, but the C code failed to compile (since the real_ function was not declared). Omitting the abstract keyword declared the real_ function but did not define it.

My thoughts are that a non-abstract, plain 'virtual' should either require that the method have a body or assume it is abstract. An 'abstract virtual' should not have a real_ function at all (ie not try to give a function pointer in the class initializer).

Steps to reproduce:
1. Make a class with a method declared as "abstract virtual" 
2. Try to compile the generated C code
3. 


Actual results:
Error that the real_ function pointer does not exist.

Expected results:
The class initializer should not reference the non-existent real_ function.

Does this happen every time?
Yes

Other information: