src/share/vm/utilities/bitMap.cpp

*** 105,115 ****
      intptr_t  mr  = (intptr_t)inverted_bit_mask_for_range(beg, end);
      intptr_t  nw  = value ? (w | ~mr) : (w & mr);
      while (true) {
        intptr_t res = Atomic::cmpxchg_ptr(nw, pw, w);
        if (res == w) break;
!       w  = *pw;
        nw = value ? (w | ~mr) : (w & mr);
      }
    }
  }
  
--- 105,115 ----
      intptr_t  mr  = (intptr_t)inverted_bit_mask_for_range(beg, end);
      intptr_t  nw  = value ? (w | ~mr) : (w & mr);
      while (true) {
        intptr_t res = Atomic::cmpxchg_ptr(nw, pw, w);
        if (res == w) break;
!       w  = res;
        nw = value ? (w | ~mr) : (w & mr);
      }
    }
  }