VMS Help CC, Messages, UNSUPPTYPE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        The CDD description for <name> specifies a data type
                not supported in C.

 Description    There is no Compaq C datatype to exactly represent
                this type.  Compaq C has created a declaration of the
                same total size as the unsupported data type.

 User Action    If the type provided by the Compaq C compiler is not
                satisfactory, change the CDD description to one that
                the compiler can represent more exactly.