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

typedef struct {
  int zot;
} Foo;

typedef struct {
  Foo foo;

} Bar;

int main() {
  Bar *b = (Bar *)malloc(sizeof (Bar));
  Foo *f = &b->foo;
  printf("bar = 0x%x, foo = 0x%x\n", b, f);
}