#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main ()
{
struct foo {
int zoo;
int bar [10];
float baz;
};
#define offsetof(S,F) ((size_t) & (((S *) 0)->F))
struct foo *k = (struct foo *) malloc (offsetof (struct foo, bar[4]));
k->bar[1] = 9;
free (k);
return 0;
}