#include <stdio.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

void watch(long depth, char *map)
{
	int i;

	for (i = 0; i < 0x10000; i++) {
		if (map[i]) {
			printf("Found %x at %p\n", map[i], &map[i]);
			exit(1);
		}
	}
	if (++depth % 5000 == 0)
		printf("now at stack depth %ld\n", depth);
	watch(depth, map);

	/* won't get here .. but stop compiler from doing tail recursion */
	for (i = 0; i < 0x10000; i++) {
		if (map[i]) {
			printf("Found %x at %p\n", map[i], &map[i]);
			exit(1);
		}
	}
}
	
main()
{
	char *p;

	p = mmap((void *)0x6008000000000000, 0x10000, PROT_READ|PROT_WRITE,
		MAP_ANONYMOUS|MAP_PRIVATE, -1, 0L);

	printf("%p\n", p);
	memset(p, '\0', 0x10000);

	watch(0, p);

	return 0;
}