src/hotspot/share/gc/shenandoah/shenandoahCollectionSet.cpp

@@ -144,11 +144,11 @@
   jint saved_current = _current_index;
   size_t index = (size_t)saved_current;
 
   while(index < num_regions) {
     if (is_in(index)) {
-      jint cur = Atomic::cmpxchg((jint)(index + 1), &_current_index, saved_current);
+      jint cur = Atomic::cmpxchg(&_current_index, saved_current, (jint)(index + 1));
       assert(cur >= (jint)saved_current, "Must move forward");
       if (cur == saved_current) {
         assert(is_in(index), "Invariant");
         return _heap->get_region(index);
       } else {