/sys$common/syshlp/helplib.hlb CC, Messages, BITWIDTHTYP  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        <Context> the bitfield width expression
                "<expression>" does not have an integral type.

 Description    A bitfield width specifier does not have an integral
                type.  A bitfield width specifier must be an integral
                constant expression.

 User Action    Correct the width specifier.