--- old/src/hotspot/share/gc/g1/g1ParScanThreadState.hpp	2020-08-04 04:07:07.440966914 -0400
+++ new/src/hotspot/share/gc/g1/g1ParScanThreadState.hpp	2020-08-04 04:07:06.964951149 -0400
@@ -158,6 +158,17 @@
 private:
   inline void do_partial_array(PartialArrayScanTask task);
 
+  HeapWord* allocate_copy_slow(G1HeapRegionAttr* dest_attr,
+                               oop old,
+                               size_t word_sz,
+                               uint age,
+                               uint node_index);
+
+  void undo_allocation(G1HeapRegionAttr dest_addr,
+                       HeapWord* obj_ptr,
+                       size_t word_sz,
+                       uint node_index);
+
   inline oop do_copy_to_survivor_space(G1HeapRegionAttr region_attr,
                                        oop obj,
                                        markWord old_mark);