void ValidatingUtil::Wrap(time_t timestamp, std::string* data) {
assert(data != NULL);
char timestamp_string[2 + 3 * sizeof timestamp];
- int size = std::sprintf(timestamp_string, "%ld", timestamp);
+ int size =
+ std::sprintf(timestamp_string, "%ld", static_cast<long>(timestamp));
assert(size > 0);
assert(size < sizeof timestamp_string);
(void)size;