histograms: fixed panic in merge when target bucket is nil

2024-05-20 15:46:52 +03:00 · 2024-05-20 15:46:52 +03:00 · 5e5f209f79
commit 5e5f209f79
parent a52bdc6f15
1 changed files with 4 additions and 0 deletions
--- a/histogram.go
+++ b/histogram.go
@ -125,6 +125,10 @@ func (h *Histogram) Merge(b *Histogram) {
 		if db == nil {
 			continue
 		}
+		if h.decimalBuckets[i] == nil {
+			var b [bucketsPerDecimal]uint64
+			h.decimalBuckets[i] = &b
+		}
 		for j := range db {
 			h.decimalBuckets[i][j] = db[j]
 		}