#include <stdlib.h>  // EXIT_SUCCESS, malloc, free

// warning: this program contains a TON of bugs; its goal
// is to demonstrate various ways you might corrupt memory
int main(int argc, char* argv[]) {
  int a[2];
  int* b = malloc(2*sizeof(int));
  int* c;

  b[0] += 2;      // assume malloc zeroes out memory
  c = b + 3;      // mess up your pointer arithmetic
  a[2] = 5;       // assign past the end of an array
  free(b);
  free(&(a[0]));  // pass a pointer to free( ) that wasn't malloc'ed
  free(b);        // double-free the same block
  b[0] = 5;       // use a free()'d pointer

  // any many more!
  return EXIT_SUCCESS;
}