using folly::Histogram;
-void addValue(uint n, int64_t bucketSize, int64_t min, int64_t max) {
+void addValue(unsigned int n, int64_t bucketSize, int64_t min, int64_t max) {
Histogram<int64_t> hist(bucketSize, min, max);
int64_t num = min;
FOR_EACH_RANGE (i, 0, n) {