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

 Message        <Context> a struct or union has no named members.
                This is undefined behavior according to the C
                standard.

 Description    The C standard requires that a struct or union
                contain at least one named member.  Because this
                struct/union contains no named members, it does not
                conform to the C standard and might not be portable.

 User Action    Make sure at least one member has a name.