--- old/src/hotspot/share/gc/shared/taskqueue.inline.hpp	2017-10-16 09:38:46.884699249 -0400
+++ new/src/hotspot/share/gc/shared/taskqueue.inline.hpp	2017-10-16 09:38:46.250797869 -0400
@@ -259,7 +259,7 @@
 
 template <unsigned int N, MEMFLAGS F>
 inline typename TaskQueueSuper<N, F>::Age TaskQueueSuper<N, F>::Age::cmpxchg(const Age new_age, const Age old_age) volatile {
-  return (size_t) Atomic::cmpxchg(new_age._data, &_data, old_age._data);
+  return Atomic::cmpxchg(new_age._data, &_data, old_age._data);
 }
 
 template<class E, MEMFLAGS F, unsigned int N>