Program: 54431
Project: 54431
Buggy source:
public ExceptionOrReturnValue invoke(BrowserChannel channel,Value thisObj,String methodName,Value[] args){
  logger.log(TreeLogger.DEBUG,"String_Node_Str" + thisObj + "String_Node_Str"+ methodName+ "String_Node_Str"+ args);
  Context jsContext=Context.getCurrentContext();
  ScriptableObject jsThis;
  if (thisObj.getType() == ValueType.NULL) {
    jsThis=(ScriptableObject)window;
  }
 else {
    jsThis=(ScriptableObject)makeJsvalFromValue(jsContext,thisObj);
  }
  Object functionObject=ScriptableObject.getProperty((ScriptableObject)window,methodName);
  if (functionObject == ScriptableObject.NOT_FOUND) {
    logger.log(TreeLogger.ERROR,"String_Node_Str" + methodName + "String_Node_Str"+ jsThis+ "String_Node_Str"+ methodName);
    return new ExceptionOrReturnValue(true,new Value(null));
  }
  Function jsFunction=(Function)functionObject;
  logger.log(TreeLogger.SPAM,"String_Node_Str" + jsFunction);
  Object jsArgs[]=new Object[args.length];
  for (int i=0; i < args.length; i++) {
    jsArgs[i]=makeJsvalFromValue(jsContext,args[i]);
  }
  Object result=null;
  try {
    result=jsEngine.callFunction(htmlPage,jsFunction,jsContext,window,jsThis,jsArgs);
  }
 catch (  JavaScriptException ex) {
    logger.log(TreeLogger.INFO,"String_Node_Str" + ex + "String_Node_Str"+ ex.getMessage()+ "String_Node_Str"+ methodName);
    return new ExceptionOrReturnValue(true,makeValueFromJsval(jsContext,ex.getValue()));
  }
catch (  Exception ex) {
    logger.log(TreeLogger.INFO,"String_Node_Str" + ex + "String_Node_Str"+ ex.getMessage()+ "String_Node_Str"+ methodName);
    return new ExceptionOrReturnValue(true,makeValueFromJsval(jsContext,Undefined.instance));
  }
  logger.log(TreeLogger.INFO,"String_Node_Str" + result + "String_Node_Str"+ jsFunction);
  return new ExceptionOrReturnValue(false,makeValueFromJsval(jsContext,result));
}

Fixed version (ground truth):
public ExceptionOrReturnValue invoke(BrowserChannel channel,Value thisObj,String methodName,Value[] args){
  logger.log(TreeLogger.DEBUG,"String_Node_Str" + thisObj + "String_Node_Str"+ methodName+ "String_Node_Str"+ args);
  Context jsContext=Context.getCurrentContext();
  ScriptableObject jsThis;
  if (thisObj.getType() == ValueType.NULL) {
    jsThis=(ScriptableObject)window;
  }
 else {
    jsThis=(ScriptableObject)makeJsvalFromValue(jsContext,thisObj);
  }
  Object functionObject=ScriptableObject.getProperty((ScriptableObject)window,methodName);
  if (functionObject == ScriptableObject.NOT_FOUND) {
    logger.log(TreeLogger.ERROR,"String_Node_Str" + methodName + "String_Node_Str"+ jsThis+ "String_Node_Str"+ methodName);
    return new ExceptionOrReturnValue(true,new Value(null));
  }
  Function jsFunction=(Function)functionObject;
  logger.log(TreeLogger.SPAM,"String_Node_Str" + jsFunction);
  Object jsArgs[]=new Object[args.length];
  for (int i=0; i < args.length; i++) {
    jsArgs[i]=makeJsvalFromValue(jsContext,args[i]);
  }
  Object result=null;
  try {
    if (args.length == 1 && methodName.indexOf(REPLACE_METHOD_SIGNATURE) != -1) {
      String currentUrl=window.jsxGet_location().toString();
      currentUrl=getUrlBeforeHash(currentUrl);
      String newUrl=getUrlBeforeHash((String)args[0].getValue());
      if (!newUrl.equals(currentUrl)) {
        window.getWebWindow().getTopWindow().getJobManager().removeAllJobs();
        ((BrowserChannelClient)channel).shouldDisconnect=true;
      }
    }
    result=jsEngine.callFunction(htmlPage,jsFunction,jsContext,window,jsThis,jsArgs);
  }
 catch (  JavaScriptException ex) {
    logger.log(TreeLogger.INFO,"String_Node_Str" + ex + "String_Node_Str"+ ex.getMessage()+ "String_Node_Str"+ methodName);
    return new ExceptionOrReturnValue(true,makeValueFromJsval(jsContext,ex.getValue()));
  }
catch (  Exception ex) {
    logger.log(TreeLogger.INFO,"String_Node_Str" + ex + "String_Node_Str"+ ex.getMessage()+ "String_Node_Str"+ methodName);
    return new ExceptionOrReturnValue(true,makeValueFromJsval(jsContext,Undefined.instance));
  }
  logger.log(TreeLogger.INFO,"String_Node_Str" + result + "String_Node_Str"+ jsFunction);
  return new ExceptionOrReturnValue(false,makeValueFromJsval(jsContext,result));
}