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

 Message        <Context> zero cannot be used as an element count
                specifier.  The specifier will be ignored, (leaving
                the member/parameter with an incomplete array type)
                in this context.

 Description    The C standard states that if an element count
                specifier is a constant expression then it shall have
                a value greater than zero.  For compatibility with
                some other C compilers, Compaq C will accept a zero
                element count specifier.  When appearing in a
                struct/union member or a parameter, the specifier
                will be ignored.

 User Action    Remove the zero.