Change nil subscription stats to return error

gopcua · Sep 19, 2022 · 484b239 · 484b239
1 parent 50c816d
commit 484b239
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/subscription.go b/subscription.go
@@ -308,6 +308,10 @@ func (s *Subscription) StatsWithContext(ctx context.Context) (*ua.SubscriptionDi
 		return nil, err
 	}
 
+	if v == nil {
+		return nil, errors.Errorf("empty SubscriptionDiagnostics for sub=%d", s.SubscriptionID)
+	}
+
 	for _, eo := range v.Value().([]*ua.ExtensionObject) {
 		stat := eo.Value.(*ua.SubscriptionDiagnosticsDataType)