--- old/src/share/vm/utilities/bitMap.cpp	2014-03-21 10:34:36.148190498 +0100
+++ new/src/share/vm/utilities/bitMap.cpp	2014-03-21 10:34:36.028185762 +0100
@@ -68,13 +68,17 @@
   if (in_resource_area) {
     _map = NEW_RESOURCE_ARRAY(bm_word_t, new_size_in_words);
   } else {
-    if (old_map != NULL) {
+    _map = _map_allocator.allocate(new_size_in_words);
+  }
+
+  if (old_map != NULL) {
+    Copy::disjoint_words((HeapWord*)old_map, (HeapWord*) _map,
+                         MIN2(old_size_in_words, new_size_in_words));
+    if (!in_resource_area) {
       _map_allocator.free();
     }
-    _map = _map_allocator.allocate(new_size_in_words);
   }
-  Copy::disjoint_words((HeapWord*)old_map, (HeapWord*) _map,
-                       MIN2(old_size_in_words, new_size_in_words));
+
   if (new_size_in_words > old_size_in_words) {
     clear_range_of_words(old_size_in_words, size_in_words());
   }