--- a/src/hotspot/share/gc/z/zCollectedHeap.cpp	Tue Feb 26 14:57:23 2019 +0530
+++ b/src/hotspot/share/gc/z/zCollectedHeap.cpp	Tue Feb 26 11:36:00 2019 +0100
@@ -262,6 +262,10 @@
   ZNMethod::unregister_nmethod(nm);
 }
 
+void ZCollectedHeap::flush_nmethod(nmethod* nm) {
+  ZNMethod::flush_nmethod(nm);
+}
+
 void ZCollectedHeap::verify_nmethod(nmethod* nm) {
   // Does nothing
 }