--- old/src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.cpp	2018-05-09 00:05:51.360124705 +0200
+++ new/src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.cpp	2018-05-09 00:05:51.210126564 +0200
@@ -479,10 +479,8 @@
 
 void ShenandoahHeapRegion::fill_region() {
   if (free() > (BrooksPointer::word_size() + CollectedHeap::min_fill_size())) {
-    HeapWord* filler = allocate(BrooksPointer::word_size(), ShenandoahHeap::_alloc_shared);
     HeapWord* obj = allocate(end() - top(), ShenandoahHeap::_alloc_shared);
     _heap->fill_with_object(obj, end() - obj);
-    BrooksPointer::initialize(oop(obj));
   }
 }