U8_OUT_OF_RANGE_CHAR
#define O_ U8_OUT_OF_RANGE_CHAR
if (sz == U8_OUT_OF_RANGE_CHAR ||
} else if (u8_size == U8_OUT_OF_RANGE_CHAR) {
if (u8_size == U8_ILLEGAL_CHAR || u8_size == U8_OUT_OF_RANGE_CHAR) {