#include <stdio.h>
#include <string.h>

struct test
{
        char a: 2;
        char b: 2;
        char c: 5;
} __attribute__((__packed__));

int main(void)
{
        struct test t;
        memset(&t, 0, sizeof(struct test));
        t.a = 0;
        t.b = 0;
        t.c = 0;
        printf("%c %c\n", (char *)&t, (char *)(&t+1));
}