#include <stddef.h>
#include <stdio.h>
 
typedef struct {
} UnitType;
 
typedef struct {
    UnitType unit;
    char data[];
} serialized_t;
 
static serialized_t new_serialized(size_t size) {
    char data[size];
    serialized_t *s = (serialized_t *)&data;
    return *s;
}
 
int main(void) {
    serialized_t s = new_serialized(128);
    s.data[13] = 'a';
    serialized_t s2 = new_serialized(128);
    memset(s2.data, '\0', 18);
    printf("%c\n", s.data[13]);
}

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