Size computation for allocation may overflow (#99)

* Size computation for allocation may overflow

Performing calculations involving the size of potentially large strings or slices can result in an overflow (for signed integer types) or a wraparound (for unsigned types). An overflow causes the result of the calculation to become negative, while a wraparound results in a small (positive) number.

vendor/github.com/redis/go-redis/v9/maintnotifications/state.go

@@ -0,0 +1,24 @@
+package maintnotifications
+
+// State represents the current state of a maintenance operation
+type State int
+
+const (
+	// StateIdle indicates no upgrade is in progress
+	StateIdle State = iota
+
+	// StateHandoff indicates a connection handoff is in progress
+	StateMoving
+)
+
+// String returns a string representation of the state.
+func (s State) String() string {
+	switch s {
+	case StateIdle:
+		return "idle"
+	case StateMoving:
+		return "moving"
+	default:
+		return "unknown"
+	}
+}