source: CIVL/examples/omp/DataRaceBench/micro-benchmarks/plusplus-var-yes.c@ af3b8e4

// race condition on outLen 
// adding private (outLen) can avoid race condition. But it is wrong semantically.
#include <stdlib.h>
#include <stdio.h>
int main(int argc, char* argv[])
{
  int i ;
  int inLen=1000 ; 
  int outLen = 0;

  if (argc>1)
    inLen= atoi(argv[1]);

  int input[inLen]; 
  int output[inLen];

  for (i=0; i<inLen; ++i) 
    input[i]=i; 


#pragma omp parallel for
  for (i=0; i<inLen; ++i) {
    output[outLen++] = input[i] ;
  }  

  printf("output[0]=%d\n", output[0]);

  return 0;
}