--- a/src/hotspot/share/classfile/defaultMethods.cpp	Tue Jan 22 15:22:13 2019 -0800
+++ b/src/hotspot/share/classfile/defaultMethods.cpp	Tue Jan 22 12:37:35 2019 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -988,7 +988,7 @@
   for (int index = 0; index < new_size; index++ ) {
     total_default_methods->at_put(index, new_methods->at(index));
   }
-  Method::sort_methods(total_default_methods, false, false);
+  Method::sort_methods(total_default_methods, /*set_idnums=*/false);
 
   klass->set_default_methods(total_default_methods);
 }

--- a/src/hotspot/share/oops/method.cpp	Tue Jan 22 15:22:13 2019 -0800
+++ b/src/hotspot/share/oops/method.cpp	Tue Jan 22 12:37:35 2019 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1604,12 +1604,12 @@
 
 // This is only done during class loading, so it is OK to assume method_idnum matches the methods() array
 // default_methods also uses this without the ordering for fast find_method
-void Method::sort_methods(Array<Method*>* methods, bool idempotent, bool set_idnums) {
+void Method::sort_methods(Array<Method*>* methods, bool set_idnums) {
   int length = methods->length();
   if (length > 1) {
     {
       NoSafepointVerifier nsv;
-      QuickSort::sort(methods->data(), length, method_comparator, idempotent);
+      QuickSort::sort(methods->data(), length, method_comparator, /*idempotent=*/false);
     }
     // Reset method ordering
     if (set_idnums) {

--- a/src/hotspot/share/oops/method.hpp	Tue Jan 22 15:22:13 2019 -0800
+++ b/src/hotspot/share/oops/method.hpp	Tue Jan 22 12:37:35 2019 -0800
@@ -969,7 +969,7 @@
 #endif
 
   // Helper routine used for method sorting
-  static void sort_methods(Array<Method*>* methods, bool idempotent = false, bool set_idnums = true);
+  static void sort_methods(Array<Method*>* methods, bool set_idnums = true);
 
   // Deallocation function for redefine classes or if an error occurs
   void deallocate_contents(ClassLoaderData* loader_data);