--- old/src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.hpp	2018-05-02 11:08:18.063777928 +0200
+++ new/src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.hpp	2018-05-02 11:08:17.776769124 +0200
@@ -641,7 +641,7 @@
   NOT_PRODUCT(ssize_t _num_par_pushes;)
 
   // ("Weak") Reference processing support.
-  SpanSubjectToDiscoveryClosure _span_discoverer;
+  SpanSubjectToDiscoveryClosure _span_based_discoverer;
   ReferenceProcessor*           _ref_processor;
   CMSIsAliveClosure             _is_alive_closure;
   // Keep this textually after _markBitMap and _span; c'tor dependency.
@@ -842,7 +842,7 @@
                ConcurrentMarkSweepPolicy*     cp);
   ConcurrentMarkSweepThread* cmsThread() { return _cmsThread; }
 
-  MemRegion ref_processor_span() const { return _span_discoverer.span(); }
+  MemRegion ref_processor_span() const { return _span_based_discoverer.span(); }
   ReferenceProcessor* ref_processor() { return _ref_processor; }
   void ref_processor_init();