source: CIVL/examples/omp/dataracebench-1.3.2/micro-benchmarks/DRB126-firstprivatesections-orig-no.c

/*
!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!!!
!!! Copyright (c) 2017-20, Lawrence Livermore National Security, LLC
!!! and DataRaceBench project contributors. See the DataRaceBench/COPYRIGHT file for details.
!!!
!!! SPDX-License-Identifier: (BSD-3-Clause)
!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!!!
*/

/*
 * This example is based on fpriv_sections.1.c OpenMP Examples 5.0.0
 * The section construct modifies the value of section_count which breaks the independence of the
 * section constructs. If the same thread executes both the section one will print 1 and the other
 * will print 2. For a same thread execution, there is no data race. 
 */

#include <omp.h>
#include <stdio.h>

int main(){
  int section_count = 0;
  omp_set_dynamic(0);
  
  omp_set_num_threads(1);

  #pragma omp parallel
  #pragma omp sections firstprivate( section_count )
  {
    #pragma omp section
    {
      section_count++;
      printf("%d\n",section_count);
    }
    #pragma omp section
    {
      section_count++;
      printf("%d\n",section_count);
    }
  }
  return 0;
}