--- old/src/share/vm/gc/g1/heapRegion.inline.hpp	2017-08-08 17:40:36.463855985 -0400
+++ new/src/share/vm/gc/g1/heapRegion.inline.hpp	2017-08-08 17:40:35.163782102 -0400
@@ -117,12 +117,13 @@
   HeapWord* addr = (HeapWord*) obj;
 
   assert(addr < top(), "must be");
-  assert(!is_closed_archive(), "Archive regions should not have references into interesting regions.");
+  assert(!is_closed_archive(),
+         "Closed archive regions should not have references into other regions");
   assert(!is_humongous(), "Humongous objects not handled here");
   bool obj_is_dead = is_obj_dead(obj, prev_bitmap);
 
   if (ClassUnloadingWithConcurrentMark && obj_is_dead) {
-    assert(!block_is_obj(addr) || is_open_archive(), "must be");
+    assert(!block_is_obj(addr), "must be");
     *size = block_size_using_bitmap(addr, prev_bitmap);
   } else {
     assert(block_is_obj(addr), "must be");
@@ -162,7 +163,9 @@
 
 inline bool HeapRegion::is_obj_dead(const oop obj, const G1CMBitMapRO* prev_bitmap) const {
   assert(is_in_reserved(obj), "Object " PTR_FORMAT " must be in region", p2i(obj));
-  return !obj_allocated_since_prev_marking(obj) && !prev_bitmap->isMarked((HeapWord*)obj);
+  return !obj_allocated_since_prev_marking(obj) &&
+         !prev_bitmap->isMarked((HeapWord*)obj) &&
+         !is_open_archive();
 }
 
 inline size_t HeapRegion::block_size(const HeapWord *addr) const {