Fix LeapArray integer overflow problem on 32-bit platform (#422)

daixiang0 · web-flow · commit 194d4be01dfe · 2021-07-28T13:38:00.000+08:00
Signed-off-by: Long Dai &lt;long0dai@foxmail.com&gt;
diff --git a/core/stat/base/leap_array.go b/core/stat/base/leap_array.go
@@ -70,8 +70,7 @@ func NewAtomicBucketWrapArrayWithTime(len int, bucketLengthInMs uint32, now uint
 		data:   make([]*BucketWrap, len),
 	}
 
-	timeId := now / uint64(bucketLengthInMs)
-	idx := int(timeId) % len
+	idx := int((now / uint64(bucketLengthInMs)) % uint64(len))
 	startTime := calculateStartTime(now, bucketLengthInMs)
 
 	for i := idx; i <= len-1; i++ {

Original file line number	Diff line number	Diff line change
`@@ -70,8 +70,7 @@ func NewAtomicBucketWrapArrayWithTime(len int, bucketLengthInMs uint32, now uint`
`70`	`70`	`data: make([]*BucketWrap, len),`
`71`	`71`	`}`
`72`	`72`
`73`		`- timeId := now / uint64(bucketLengthInMs)`
`74`		`- idx := int(timeId) % len`
	`73`	`+ idx := int((now / uint64(bucketLengthInMs)) % uint64(len))`
`75`	`74`	`startTime := calculateStartTime(now, bucketLengthInMs)`
`76`	`75`
`77`	`76`	`for i := idx; i <= len-1; i++ {`