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

 Message        The #pragma unroll directive takes a value from zero
                to 255.  The value "<val>" is outside that range.
                The directive will be ignored.

 Description    The value supplied to a #pragma unroll is outside the
                range allowed for the directive.  The #pragma
                directive will be ignored.

 User Action    Use a valid value for the unroll count.