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

 Message        The external identifier "<name>" exceeds 31
                characters.  The name has been shortened to
                "<shortened spelling>".

 Description    A compilation that used the /NAMES=SHORTENED
                qualifier has encountered a name that needs to be
                shortened.  The external name will be different than
                the internal name.  Also, because the external name
                exceeds the length specified by standard C as the
                minimum external length an implementation must
                support, this program does not strictly conform to
                standard C and might not be accepted by other C
                compilers.

 User Action    Be aware of these items.