--- old/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2018-04-23 16:50:30.049104711 +0200
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2018-04-23 16:50:29.766095889 +0200
@@ -509,13 +509,12 @@
   // allocated block, or else "NULL".
   HeapWord* expand_and_allocate(size_t word_size);
 
-  // Process any reference objects discovered during
-  // an incremental evacuation pause.
+  // Process any reference objects discovered.
   void process_discovered_references(G1ParScanThreadStateSet* per_thread_states);
 
-  // Enqueue any remaining discovered references
-  // after processing.
-  void enqueue_discovered_references(G1ParScanThreadStateSet* per_thread_states);
+  // If during an initial mark pause we install a pending list head which is not otherwise reachable
+  // ensure that it is marked in the bitmap for concurrent marking to discover.
+  void make_pending_list_reachable();
 
   // Merges the information gathered on a per-thread basis for all worker threads
   // during GC into global variables.