--- a/src/share/vm/opto/idealGraphPrinter.cpp	Wed Oct 16 10:52:41 2013 +0200
+++ b/src/share/vm/opto/idealGraphPrinter.cpp	Tue Nov 05 17:38:04 2013 -0800
@@ -616,7 +616,11 @@
       buffer[0] = 0;
       _chaitin->dump_register(node, buffer);
       print_prop("reg", buffer);
-      print_prop("lrg", _chaitin->_lrg_map.live_range_id(node));
+      uint lrg_id = 0;
+      if (node->_idx < _chaitin->_lrg_map.size()) {
+        lrg_id = _chaitin->_lrg_map.live_range_id(node);
+      }
+      print_prop("lrg", lrg_id);
     }
 
     node->_in_dump_cnt--;
@@ -639,8 +643,8 @@
     // reachable but are in the CFG so add them here.
     for (uint i = 0; i < C->cfg()->number_of_blocks(); i++) {
       Block* block = C->cfg()->get_block(i);
-      for (uint s = 0; s < block->_nodes.size(); s++) {
-        nodeStack.push(block->_nodes[s]);
+      for (uint s = 0; s < block->number_of_nodes(); s++) {
+        nodeStack.push(block->get_node(s));
       }
     }
   }
@@ -713,9 +717,9 @@
       tail(SUCCESSORS_ELEMENT);
 
       head(NODES_ELEMENT);
-      for (uint s = 0; s < block->_nodes.size(); s++) {
+      for (uint s = 0; s < block->number_of_nodes(); s++) {
         begin_elem(NODE_ELEMENT);
-        print_attr(NODE_ID_PROPERTY, get_node_id(block->_nodes[s]));
+        print_attr(NODE_ID_PROPERTY, get_node_id(block->get_node(s)));
         end_elem();
       }
       tail(NODES_ELEMENT);