src/hotspot/share/utilities/lockFreeStack.hpp

*** 63,73 ****
      T* cur = top();
      T* old;
      do {
        old = cur;
        set_next(*last, cur);
!       cur = Atomic::cmpxchg(first, &_top, cur);
      } while (old != cur);
    }
  
    // Noncopyable.
    LockFreeStack(const LockFreeStack&);
--- 63,73 ----
      T* cur = top();
      T* old;
      do {
        old = cur;
        set_next(*last, cur);
!       cur = Atomic::cmpxchg(&_top, cur, first);
      } while (old != cur);
    }
  
    // Noncopyable.
    LockFreeStack(const LockFreeStack&);
*** 89,99 ****
        T* new_top = NULL;
        if (result != NULL) {
          new_top = next(*result);
        }
        // CAS even on empty pop, for consistent membar bahavior.
!       result = Atomic::cmpxchg(new_top, &_top, result);
      } while (result != old);
      if (result != NULL) {
        set_next(*result, NULL);
      }
      return result;
--- 89,99 ----
        T* new_top = NULL;
        if (result != NULL) {
          new_top = next(*result);
        }
        // CAS even on empty pop, for consistent membar bahavior.
!       result = Atomic::cmpxchg(&_top, result, new_top);
      } while (result != old);
      if (result != NULL) {
        set_next(*result, NULL);
      }
      return result;