Cleaning up after shutdown request

edit

In my node looping portion, I check for shutdown using ros::isShuttingDown(). After the looping portion, I wish to perform a couple of actions before shutdown. The reason for this is that I am attempting to programatically start and stop nodes. The node is being stopped either with CTRL-C or rosnode kill

However, this doesn't seem to function as I hope.

Here is a sample of my code:

 while(!ros::isShuttingDown()){
 //while(ros::ok()) { // Does not work either.

      ros::spinOnce();
      rate.sleep();
  }

  //EDIT:
  ROS_INFO("will not print");
  fflush(stdout);

  //FIXME Cleanup section not running
  // Cleanup

  localizer.nh.setParam(
    strcat(strcat(strcpy(localizer_node_param, "/"),
    LOCALIZER_NODE),"_running"), false);

  return SUCCESS;

In this instance, the parameter is not re-set at the end of life of this node. Can someone reproduce this behavior? Simple loop and ROS_INFO() statement is sufficient.

EDIT: ROS log statements also do not print to stdout when placed as shown (with or without fflush(stdout);)