#include <pthread.h>
#include <stdio.h>

int main()
{
	pthread_key_t my_key;
       
	pthread_key_create(&my_key, NULL);
	pthread_setspecific(my_key, (void*) &my_key);
	pthread_key_delete(my_key);
	
	pthread_key_create(&my_key, NULL);
	printf("Recreated key is: %x\n",
		pthread_getspecific(my_key));
	pthread_key_delete(my_key);

	return 0;
}