#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>

int main (int argc, char **argv) {
   const double BUFFER_SIZE = 10000000;
   int i; 
    char *buffer = (char *)calloc (BUFFER_SIZE,100);
    if(buffer == NULL){
     printf("oh dear, no mem for buffer 1?\n");
   }
    free (buffer); 
    return 0;
}