src/hotspot/share/gc/shenandoah/shenandoahTaskqueue.hpp

@@ -302,11 +302,11 @@
 
   if (_claimed_index >= size) {
     return NULL;
   }
 
-  jint index = Atomic::add(1, &_claimed_index);
+  jint index = Atomic::add(&_claimed_index, 1);
 
   if (index <= size) {
     return GenericTaskQueueSet<T, F>::queue((uint)index - 1);
   } else {
     return NULL;