--- old/src/hotspot/share/utilities/concurrentHashTableTasks.inline.hpp	2019-11-21 11:53:20.207098070 +0100
+++ new/src/hotspot/share/utilities/concurrentHashTableTasks.inline.hpp	2019-11-21 11:53:19.951093889 +0100
@@ -53,7 +53,7 @@
 
   // Returns true if you succeeded to claim the range start -> (stop-1).
   bool claim(size_t* start, size_t* stop) {
-    size_t claimed = Atomic::add((size_t)1, &_next_to_claim) - 1;
+    size_t claimed = Atomic::add(&_next_to_claim, (size_t)1) - 1;
     if (claimed >= _stop_task) {
       return false;
     }