ObjFW  Diff

	intmax_t num = 0;

	if (string[0] == '-')
		i++;

	for (; i < length; i++) {
		if (string[i] >= '0' && string[i] <= '9') {
			intmax_t newnum = (num * 10) + (string[i] - '0');

			if (newnum < num)
			if (INTMAX_MAX / 10 < num ||
			    INTMAX_MAX - num * 10 < string[i] - '0')
				@throw [OFOutOfRangeException
				    newWithClass: isa];

			num = newnum;
			num = (num * 10) + (string[i] - '0');
		} else
			@throw [OFInvalidEncodingException newWithClass: isa];
	}

	if (string[0] == '-')
		num *= -1;