--- old/src/share/vm/gc/g1/g1CardLiveData.cpp	2017-08-22 15:36:27.089167737 +0200
+++ new/src/share/vm/gc/g1/g1CardLiveData.cpp	2017-08-22 15:36:26.901167744 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2017, 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
@@ -409,7 +409,7 @@
 
   virtual void work(uint worker_id) {
     while (true) {
-      size_t to_process = Atomic::add(1, &_cur_chunk) - 1;
+      size_t to_process = Atomic::add(1u, &_cur_chunk) - 1;
       if (to_process >= _num_chunks) {
         break;
       }