VMS Help CC, Messages, UNINIT1  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        The scalar variable "<var>"<declared in> is fetched
                but not initialized<inlineinfo>.  And there may be
                other such fetches of this variable that have not
                been reported in this compilation.

 Description    A variable's value has been used without being set.
                This might not have been what you intended.  The
                algorithms that detect this situation only report it
                once for a given variable, and not necessarily at the
                first use of the uninitialized value.

 User Action    Provide the variable with a value before the variable
                is used.  If you only provide a value for the use
                reported here, you may find that when you recompile
                your program another uninitialized use is detected.
                It is best to initialize variables as close as
                possible to the point of declaration.