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

 Message        <Context> the type of "<name>" has different type
                qualifiers than the previous declaration at
                <location>.  The resulting type will be the composite
                of the two types.

 Description    The C standard permits redeclaration and formation of
                a composite type only when the two types being
                considered are compatible, and types with different
                type qualifiers are not compatible.  Compaq C allows
                this redeclaration for consistency with some other C
                compilers, and will form a composite type with all of
                the type qualifiers from both declarations.  Be aware
                that these declarations may not be accepted by other
                C compilers.

 User Action    Modify the declarations so that they use identically
                qualified types.