gistfile1.txt

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

void not_vulnerable(char *s) {
  char buf[1024];
  int size = sizeof s;
  printf("Detected size was %d\n", size);
  if (size > 1024) {
    exit(1);
  }
  else {
    strcpy(buf, s);
  }
}

void do_crash() {
   char buf[2048];
   memset(buf, 'a', 2046);
   buf[2047] = '\0';
   not_vulnerable(buf);
}

int main() {
   do_crash();
   return 0;
}