--- old/src/hotspot/share/oops/klass.hpp	2020-07-31 16:51:56.318267183 +0000
+++ new/src/hotspot/share/oops/klass.hpp	2020-07-31 16:51:54.762244029 +0000
@@ -196,10 +196,10 @@
  public:
   int id() { return _id; }
 
-  enum DefaultsLookupMode { find_defaults, skip_defaults };
-  enum OverpassLookupMode { find_overpass, skip_overpass };
-  enum StaticLookupMode   { find_static,   skip_static };
-  enum PrivateLookupMode  { find_private,  skip_private };
+  enum class DefaultsLookupMode { find_defaults, skip_defaults };
+  enum class OverpassLookupMode { find_overpass, skip_overpass };
+  enum class StaticLookupMode   { find_static,   skip_static };
+  enum class PrivateLookupMode  { find_private,  skip_private };
 
   virtual bool is_klass() const { return true; }
 
@@ -482,10 +482,10 @@
   virtual Klass* find_field(Symbol* name, Symbol* signature, fieldDescriptor* fd) const;
   virtual Method* uncached_lookup_method(const Symbol* name, const Symbol* signature,
                                          OverpassLookupMode overpass_mode,
-                                         PrivateLookupMode = find_private) const;
+                                         PrivateLookupMode = PrivateLookupMode::find_private) const;
  public:
   Method* lookup_method(const Symbol* name, const Symbol* signature) const {
-    return uncached_lookup_method(name, signature, find_overpass);
+    return uncached_lookup_method(name, signature, OverpassLookupMode::find_overpass);
   }
 
   // array class with specific rank