CORBA.BAD_PARAM(omniORB.BAD_PARAM_ValueFactoryFailure, CORBA.COMPLETED_NO) Failure

Hi,

We are using omniOrb 4.2.3 for interprocess communication between python and c++.
Currently we are facing a omniORB.BAD_PARAM_ValueFactoryFailure Error.
I was able to reproduce the error with the following IDL:

module Example {

    valuetype ParamType unsigned short;
    valuetype InnerULong unsigned long;

    struct MyStruct {
        InnerULong member;
    };

    interface Echo {
        void execute(in ParamType a, in Example::MyStruct b);
    };
};

The Error occurs when the execute function of the Echo interface is called from python to a c++ servant.
I made the following observations:

*         Error occurs only if the value of "ParamType a" is equal to the "InnerULong member" of MyStruct -> execute(0, MyStruct(member=0))

*         A typedef instead of valuetype of InnerULong to unsigned long would work

*         Calling a python servant also works

Is the usage of valuetype for InnerULong "not a good practice" and a typedef preferable?
Or should this example work without any problems?

Thanks and regards,
Maximilian Fackler






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