enum { #define HELP_SCOPE_ RT_BIT_64(HELP_SCOPE__BIT) HELP_SCOPE__BIT = 0 HELP_SCOPE_ , #define RT_BIT_64(_BIT) _BIT HELP_SCOPE_ , #define RT_BIT_64(_BIT) _BIT , HELP_SCOPE__END }; AssertCompile((int)HELP_SCOPE__END >= 1); AssertCompile((int)HELP_SCOPE__END < 64); AssertCompile(RT_BIT_64(HELP_SCOPE__END - 1) & RTMSGREFENTRYSTR_SCOPE_MASK); HELP_CMD_, Bad or missing g_sMode string parameter value.