Merge pull request #41 from dreamscached/issue-40-fix

Fix #40 by using minInt
dreamscached · Dec 22, 2022 · b404c1b · b404c1b
2 parents 65a318e + 8f6a4c3
commit b404c1b
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Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/ping_17.go b/ping_17.go
@@ -1838,7 +1838,7 @@ func (p *Pinger) ping17ReadStatusResponsePacketPayload(reader io.Reader) ([]byte
 
 	// Read entire packet to a buffer
 	pb := bytes.NewBuffer(make([]byte, 0, pl))
-	pb.Write(lb[ln-lr.Len() : ln])
+	pb.Write(lb[maxInt(ln-lr.Len(), 0):ln])
 	if _, err = io.CopyN(pb, reader, int64(pl)-int64(lr.Len())); err != nil {
 		return nil, err
 	}

diff --git a/stack.go → util.go b/stack.go → util.go
@@ -18,3 +18,12 @@ func (s *stack) Pop() (interface{}, error) {
 	*s = (*s)[0 : len(*s)-1]
 	return ret, nil
 }
+
+// maxInt returns greatest of two of the passed integer numbers.
+func maxInt(a int, b int) int {
+	if a < b {
+		return b
+	} else {
+		return a
+	}
+}