INTCONSTUNSIGN

Message        This integer constant value will be given the type
               unsigned long int.  This is compatible with the C89
               standard and older compilers.  The C99 standard
               requires this to be a signed long long int.

Description    With the introduction of the long long int type, the
               C99 standard changed the rules for how the type of
               certain integer constants are determined.  Unsuffixed
               decimal constants which are too large for long int,
               but could fit in an unsigned long int are given the
               type long long int in C99.  Prior to C99 these would
               be given unsigned long int type.

User Action    Be aware of this difference.