--- old/src/hotspot/share/oops/klassVtable.cpp	2019-03-11 14:26:20.966354950 +0100
+++ new/src/hotspot/share/oops/klassVtable.cpp	2019-03-11 14:26:20.758354953 +0100
@@ -1333,6 +1333,18 @@
   virtual void doit(InstanceKlass* intf, int method_count) = 0;
 };
 
+int count_interface_methods_needing_itable_index(Array<Method*>* methods) {
+  int method_count = 0;
+  if (methods->length() > 0) {
+    for (int i = methods->length(); --i >= 0; ) {
+      if (interface_method_needs_itable_index(methods->at(i))) {
+        method_count++;
+      }
+    }
+  }
+  return method_count;
+}
+
 // Visit all interfaces with at least one itable method
 void visit_all_interfaces(Array<InstanceKlass*>* transitive_intf, InterfaceVisiterClosure *blk) {
   // Handle array argument
@@ -1401,7 +1413,7 @@
   CountInterfacesClosure cic;
   visit_all_interfaces(transitive_interfaces, &cic);
 
-  // There's alway an extra itable entry so we can null-terminate it.
+  // There's always an extra itable entry so we can null-terminate it.
   int itable_size = calc_itable_size(cic.nof_interfaces() + 1, cic.nof_methods());
 
   // Statistics