attribute(cleanup) sample

cleanup.c

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

#define cleanup_free_scope __attribute__((cleanup(my_free)))
#define cleanup_print_scope __attribute__((cleanup(my_print_int)))

void my_print_int(int *i)
{
	printf("argument = %d\n", *i);
}

void my_free(void **p)
{
	printf("%p was freed.\n", p);
	free(*p);
}

int main(void)
{
	void *p1 cleanup_free_scope = malloc(1000);
	void *p2 cleanup_free_scope = malloc(128);
	int  val cleanup_print_scope = 10289;
	return 0;
}