ObjFW  Diff

			toCopy = length;

		memcpy(_incompleteUTF8Surrogate + _incompleteUTF8SurrogateLen,
		    buffer, toCopy);
		_incompleteUTF8SurrogateLen += toCopy;

		if (_incompleteUTF8SurrogateLen < (size_t)UTF8Len)
			return 0;

		UTF8Len = of_string_utf8_decode(
		    _incompleteUTF8Surrogate, _incompleteUTF8SurrogateLen, &c);

		if (UTF8Len <= 0 || c > 0x10FFFF) {
			assert(UTF8Len == 0 || UTF8Len < -4);