Message        <Context> allowing an enumeration type and a signed
                int to be compatible may not be portable.

 Description    The standard states that enumeration types shall be
                compatible with an integer type.  HP C, along with
                most other C compilers, has chosen the signed int
                type to be compatible with enumeration types.  Other
                compilers may chose another type such as unsigned int
                (the C standard even allows an implementation to
                choose different integer types depending on the
                values of the enumeration constants defined for the
                type).  Therefore this program may not be accepted by
                other C compilers.

 User Action    Insert a cast to make the types the same.