terminate called after throwing an instance of 'ros::TimeNotInitializedException'. what(): Cannot use ros::Time::now() before the first NodeHandle has been created or ros::start() has been called.

edit

I tried googling for an answer but it seems like the answers are targeted for rospy and not roscpp. Also, I am using ros indigo.

The code I am trying to run is pretty simple:

#include "generate_global_map.hpp"
#include <iostream>

int main(int argc, char **argv) {

  ros::init(argc, argv, "test_generate_global_map");

  std::cout << "hello world" << std::endl;

  ros::Rate loop_rate(5); //10hz loop rate

  while (ros::ok()){

  ros::spinOnce(); //ros spin is to ensure that ros threading does not leave subscribes un processed
  loop_rate.sleep();

  }

  return 0;

}

When I try to rosrun this I get this error:

hello world
terminate called after throwing an instance of 'ros::TimeNotInitializedException'
  what():  Cannot use ros::Time::now() before the first NodeHandle has been created or ros::start() has been called.      If this is a standalone app or test that just uses ros::Time and does not communicate over ROS, you may also call     ros::Time::init()
Aborted (core dumped)

Anyone know what the issue is?