Make sure that the body of the function created by calling Function is...

src/debug-delay.js

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1212 matching lines @@
   }
 
   return request.toJSONProtocol();
 };
 
 
 // Convert a JSON response to text for display in a text based debugger.
 DebugCommandProcessor.prototype.responseToText = function(json_response) {
   try {
     // Convert the JSON string to an object.
-    response = %CompileString('(' + json_response + ')', false)();
+    response = %CompileString('(' + json_response + ')', 0, false)();
 
     if (!response.success) {
       return response.message;
     }
 
     if (response.command == 'backtrace') {
       var body = response.body;
       var result = 'Frames #' + body.fromFrame + ' to #' +
           (body.toFrame - 1) + ' of ' + body.totalFrames + '\n';
       for (i = 0; i < body.frames.length; i++) {
@@ skipping 185 matching lines @@
   return new ResponsePacket(request);
 };
 
 
 DebugCommandProcessor.prototype.processDebugJSONRequest = function(json_request, stopping) {
   var request;  // Current request.
   var response;  // Generated response.
   try {
     try {
       // Convert the JSON string to an object.
-      request = %CompileString('(' + json_request + ')', false)();
+      request = %CompileString('(' + json_request + ')', 0, false)();
 
       // Create an initial response.
       response = this.createResponse(request);
 
       if (!request.type) {
         throw new Error('Type not specified');
       }
 
       if (request.type != 'request') {
         throw new Error("Illegal type '" + request.type + "' in request");
@@ skipping 432 matching lines @@
       response.body.push(script);
     }
   }
 };
 
 
 // Check whether the JSON response indicate that the VM should be running.
 DebugCommandProcessor.prototype.isRunning = function(json_response) {
   try {
     // Convert the JSON string to an object.
-    response = %CompileString('(' + json_response + ')', false)();
+    response = %CompileString('(' + json_response + ')', 0, false)();
 
     // Return whether VM should be running after this request.
     return response.running;
 
   } catch (e) {
      return false;
   }
 }
 
 
@@ skipping 118 matching lines @@
       json += NumberToJSON_(elem);
     } else if (IS_STRING(elem)) {
       json += StringToJSON_(elem);
     } else {
       json += elem;
     }
   }
   json += ']';
   return json;
 };