--- a/hotspot/src/share/vm/gc/g1/g1CollectedHeap.cpp	Thu Apr 14 10:57:09 2016 +0200
+++ b/hotspot/src/share/vm/gc/g1/g1CollectedHeap.cpp	Mon Apr 18 16:51:14 2016 +0200
@@ -98,7 +98,7 @@
   RefineCardTableEntryClosure() : _concurrent(true) { }
 
   bool do_card_ptr(jbyte* card_ptr, uint worker_i) {
-    bool oops_into_cset = G1CollectedHeap::heap()->g1_rem_set()->refine_card(card_ptr, worker_i, false);
+    bool oops_into_cset = G1CollectedHeap::heap()->g1_rem_set()->refine_card(card_ptr, worker_i, NULL);
     // This path is executed by the concurrent refine or mutator threads,
     // concurrently, and so we do not care if card_ptr contains references
     // that point into the collection set.
@@ -3090,28 +3090,6 @@
     }
 };
 
-#ifdef ASSERT
-class VerifyCSetClosure: public HeapRegionClosure {
-public:
-  bool doHeapRegion(HeapRegion* hr) {
-    // Here we check that the CSet region's RSet is ready for parallel
-    // iteration. The fields that we'll verify are only manipulated
-    // when the region is part of a CSet and is collected. Afterwards,
-    // we reset these fields when we clear the region's RSet (when the
-    // region is freed) so they are ready when the region is
-    // re-allocated. The only exception to this is if there's an
-    // evacuation failure and instead of freeing the region we leave
-    // it in the heap. In that case, we reset these fields during
-    // evacuation failure handling.
-    guarantee(hr->rem_set()->verify_ready_for_par_iteration(), "verification");
-
-    // Here's a good place to add any other checks we'd like to
-    // perform on CSet regions.
-    return false;
-  }
-};
-#endif // ASSERT
-
 uint G1CollectedHeap::num_task_queues() const {
   return _task_queues->size();
 }
@@ -3354,11 +3332,6 @@
           }
         }
 
-#ifdef ASSERT
-        VerifyCSetClosure cl;
-        collection_set_iterate(&cl);
-#endif // ASSERT
-
         // Initialize the GC alloc regions.
         _allocator->init_gc_alloc_regions(evacuation_info);