--- old/src/share/vm/opto/node.cpp	2015-03-17 10:09:04.795306354 +0100
+++ new/src/share/vm/opto/node.cpp	2015-03-17 10:09:04.436067405 +0100
@@ -2069,7 +2069,7 @@
 
 //--------------------------unique_ctrl_out------------------------------
 // Return the unique control out if only one. Null if none or more than one.
-Node* Node::unique_ctrl_out() {
+Node* Node::unique_ctrl_out() const {
   Node* found = NULL;
   for (uint i = 0; i < outcnt(); i++) {
     Node* use = raw_out(i);