Hi all

I am writing a Ruby wrapper for a C library. I can wrap some of the C
structs with Data_Make_Struct but for one of them I get "invalid
application of sizeof to incomplete type". I expect this has something
to do with that the compiler cannot find a definitive size of the
struct.

Am I on the right track and if so, is there any way around it? Thanks
in advance.

Regards

Erik