--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeParser.java	Thu Aug 29 14:28:43 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeParser.java	Thu Aug 29 17:39:55 2013 +0200
@@ -30,6 +30,8 @@
 import javax.lang.model.util.*;
 import javax.tools.Diagnostic.Kind;
 
+import org.omg.CORBA.*;
+
 import com.oracle.truffle.api.dsl.*;
 import com.oracle.truffle.api.nodes.*;
 import com.oracle.truffle.dsl.processor.*;
@@ -199,6 +201,10 @@
         }
 
         for (NodeData splittedNode : nodes) {
+            if (templateType.getModifiers().contains(Modifier.PRIVATE) && splittedNode.getSpecializations().size() > 0) {
+                splittedNode.addError("Nodes containing the @%s annotation cannot be private.", Specialization.class.getSimpleName());
+            }
+
             finalizeSpecializations(elements, splittedNode);
             verifyNode(splittedNode, elements);
             createPolymorphicSpecializations(splittedNode);