Message        <Context> "<expression>" is a pointer to an
                incomplete struct or union and should not be used as
                the left operand of a member dereference.

 Description    In certain modes, HP C will allow the struct or union
                specifier of a member dereference operator (->) to
                specify a struct or union that does not contain the
                element specified by the right operand.  While this
                is considered poor programming practice, it was
                common with older C compilers.  In cases where the
                left operand is a pointer to an incomplete type, the
                practice is considered even worse.  While HP C will
                accept the construct in certain modes, the code
                should be modified.  Further, this program does not
                conform to the C standard and might not be accepted
                by other C compilers.

 User Action    Be aware of this if you wish to port the program.