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

 Message        The type of the tentatively-defined variable "<name>"
                is incomplete at the end of the compilation unit.

 Description    This file-scope declaration with no storage-class
                specifier declares an identifier with incomplete
                type.  The type must be completed before the end of
                the compilation unit.

 User Action    Complete the type.