CVTU32TO64

Message        <Context> an unsigned 32-bit integer constant that
               has its high-order bit set has been converted to a
               signed 64-bit type.  The conversion will not
               sign-extend.

Description    This message indicates a conversion that may produce
               unexpected results on this platform because the
               destination type is a 64-bit type instead of a 32-bit
               type.

User Action    If this is the intended behavior, first cast the
               constant to an unsigned 64-bit type.