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

 Message        #pragma use_linkage was applied to the intrinsic
                function "<routine name>".  The function will be
                treated as an ordinary external function.

 Description    Trying to optimize a pointer argument passed to an
                intrinsic function, the compiler discovered that
                #pragma use_linkage had been applied to the function
                declaration.  The intrinsic function of this name
                that is understood by the compiler does not allow you
                specify a linkage.  Therefore the compiler must
                assume that you are supplying your own function
                definition, and treat this as a call to an external
                function with no special properties.

 User Action    If you want to call the intrinsic function, remove
                the #pragma use_linkage directive.  If you are
                supplying your own function definition, you may want
                to rename the function or add a #pragma function
                directive for it.