--- a/graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/builtins/SLStackTraceBuiltin.java	Tue Jul 15 16:44:56 2014 -0700
+++ b/graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/builtins/SLStackTraceBuiltin.java	Tue Jul 15 16:45:05 2014 -0700
@@ -28,6 +28,7 @@
 import com.oracle.truffle.api.frame.*;
 import com.oracle.truffle.api.frame.FrameInstance.FrameAccess;
 import com.oracle.truffle.api.nodes.*;
+import com.oracle.truffle.api.source.*;
 
 /**
  * Returns a string representation of the current stack. This includes the {@link CallTarget}s and
@@ -37,6 +38,10 @@
 @NodeInfo(shortName = "stacktrace")
 public abstract class SLStackTraceBuiltin extends SLBuiltinNode {
 
+    public SLStackTraceBuiltin() {
+        super(new NullSourceSection("SL builtin", "stacktrace"));
+    }
+
     @Specialization
     public String trace() {
         return createStackTrace();