diff --git a/runtime/main.go b/runtime/main.go
index 8d5fedd2c47fdb28dc85c7fb885bdacf3867c36b..76926fcf9fbb34b5484d141b13e0f1a618b80be2 100644
--- a/runtime/main.go
+++ b/runtime/main.go
@@ -680,6 +680,11 @@ func doProcess() error {
 	return execRunc()
 }
 
+// test
+func emptyf() {
+
+}
+
 func main() {
 	defer func() {
 		if err := recover(); err != nil {