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

int main(void)
{
	char buf[10];
	char *p;

	/* no init */
	strcat(buf, "al");

	/* overflow */
	buf[11] = 'a';

	p = malloc(70);
	p[10] = 5;
	free(p);

	/* write after free */
	p[1] = 'a';
	p = malloc(10);

	/* memory leak */
	p = malloc(10);

	/* underrun */
	p--;
	*p = 'a';

	return 0;
}