Message        <Context> allowing an enumeration constant outside
                the range of signed int is a language extension.

 Description    The standard requires that enumeration constants have
                a value representable as an int.  Other C compilers
                will allow enumeration constants to have values
                outside the range.  In some modes the HP C compiler
                will allow this extension.

 User Action    Be aware that other compilers may not support this
                extension.