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

 Message        <Context> "<name>" is a member of another struct or
                union.

 Description    In certain modes, the compiler will allow a struct or
                union reference whose right operand is not a member
                of the struct or union type of the left operand.
                This is allowed for compatibility with other
                compilers.

 User Action    Correct the struct or union reference so that the
                member specifier is a member of the type of the left
                operand.