CPP12 — Problem with OBV_ valuetype class constructor

The CORBA 2.3.1 specification does not cover the case of code generation
for the OBV_ class constructor for a valuetype that inherits from
another concrete valuetype:

// IDL
valuetype A

;

valuetype B : A

;

The generated OBV constructor for class B needs to take both o1 and o2
arguments, so it should look like this:

// C++
class OBV_B

;

Proposal:

Change the second paragraph of 1.17.2 to read:

"For the same reasons, a C++ OBV_ class defines a protected default
constructor, a protected constructor that takes an initializer for each
valuetype data member, and a protected default constructor. The
parameters of the constructor that takes an initializer for each member
appear in the same order as the data members appear, top to bottom, in
the IDL valuetype definition, regardless of whether they are public or
private. If the valuetype inherits from a concrete valuetype, then
parameters for the data members of the inherited valuetype appear
first. All parameters for the member initializer constructor follow the
C++ mapping parameter passing rules for in arguments of their respective
types."

see below