std::priority_queue with std::tuple<int,int>

[rtylerr]

Hi There! I'm having some problem at run time with this program and for all I can see, it should work. I would really appreciate any help anyone can give. The code is pasted below. The problem is that when i try to use std::priority_queue::pop() the program simply exits. I left in my debugging cout's so you can see how I determined this. Additional information, I am compiling on a redhat system with the following command:
<g++ -std=c++11 -Wall -Werror -Wextra -pedantic -g3 -DDEBUG>

#include<queue>
#include<iostream>
#include<string>
#include<fstream>
#include<sstream>
#include<vector>
#include<tuple>

#ifdef DEBUG
#define _(args) args
#else
#define _(args)
#endif

using namespace std;

typedef tuple<int,int,int> triple_t;
class Compare{
public:
  bool operator()(const triple_t& a, const triple_t& b) const{
    if(get<0>(a) > get<0>(b))
      return true;
    else if(get<0>(b) < get<0>(a))
      return false;
    else if(get<1>(b)<get<1>(a))
      return false;
    else if(get<1>(b)>get<1>(a))
      return true;
    else
      exit(1);
  }
};
typedef std::priority_queue<triple_t,std::vector<triple_t>, Compare> prioq;
int main(int argc, char* argv[])
{
  string values,starting;
  int fill, priority;
  prioq pq;
  for(int i=1;i<argc;++i)
    {
      ifstream file(argv[i]);
      getline(file,values);
      getline(file,starting);
      size_t pos = starting.find(":");
      ++++pos;
      priority = stoi(starting.substr(pos));
      istringstream ss(values);
      while(ss>>fill)
	{
	  _(cout<<priority<<" "<<i<<" "<<fill<<endl;)
	  pq.push(make_tuple(priority,i,fill));
	  priority+=fill;
	}
    }
  while(pq.size()!=0)
    {
      _(cout<<"InLoop "<<pq.size()<<endl;)
      cout<<get<2>(pq.top())<<endl;
      _(cout<<"ONE"<<pq.size()<<endl;)
      pq.pop();
      _(cout<<"TWO"<<pq.size()<<endl;)
    }
}

[JLBorges]

class Compare{
public:
  bool operator()(const triple_t& a, const triple_t& b) const{
    if(get<0>(a) > get<0>(b))
      return true;
    else if(get<0>(b) < get<0>(a))
      return false;
    else if(get<1>(b)<get<1>(a))
      return false;
    else if(get<1>(b)>get<1>(a))
      return true;
    else
      exit(1); // what is this???
               // exit program if get<0>(a) == get<0>(b) and get<1>(a) == get<1>(b) ???
  }
};