--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/ValueNode.java	Sun May 24 16:29:41 2015 +0200
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/ValueNode.java	Sun May 24 16:40:29 2015 +0200
@@ -101,7 +101,11 @@
         return this instanceof ConstantNode;
     }
 
-    private static final NodePredicate IS_CONSTANT = node -> node instanceof ConstantNode;
+    private static final NodePredicate IS_CONSTANT = new NodePredicate() {
+        public boolean apply(Node n) {
+            return n instanceof ConstantNode;
+        }
+    };
 
     public static NodePredicate isConstantPredicate() {
         return IS_CONSTANT;