/* -*- mode: C -*-  */
/* 
   IGraph library.
   Copyright (C) 2011-2012  Gabor Csardi <csardi.gabor@gmail.com>
   334 Harvard street, Cambridge MA, 02139 USA
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 
   02110-1301 USA

*/

#include <igraph.h>
#include <pthread.h>
#include <unistd.h>

void *thread_function(void *arg) {
  IGRAPH_FINALLY(0, 0);
  return 0;
}

int main() {
  pthread_t thread_id;
  void *exit_status;

  /* Skip if igraph is not thread-safe */
  if (!IGRAPH_THREAD_SAFE) { 
    return 77;
  }
  
  /* Run a thread that leaves some junk in the error stack */
  pthread_create(&thread_id, NULL, thread_function, 0);
  pthread_join(thread_id, &exit_status);

  /* Check that the error stack is not common */
  if (!IGRAPH_FINALLY_STACK_EMPTY) {
    printf("Foobar\n");
    return 1;
  }

  return 0;
}
