Hi Kevin,
It looks like you are using NULL to initialize a union. If I recall correctly, you can't do that in C (nor in C++).
Change the Arguments default_value to: InputValue* default_value; You'll have to allocate a InputValue structure explicitly.
Or remove InputValue from Arguments and add in: double default_Double; long default_Long; char* default_CharStar;
Yeah, it wastes a few bytes. But it's just a few bytes, and unless every byte is valuable it shouldn't be too egregious overhead.
HTH, --Eljay
