1#include <stdio.h>
2#include <string.h>
3#include <stdlib.h>
4
5typedef struct{void*super;int name;int size;}t;
6t*f(t*clas,int size)
7{
8  t*child=(t*)malloc(size);
9  memcpy(child,clas,clas->size);
10  child->super=clas;
11  child->name=0;
12  child->size=size;
13  return child;
14}
15main()
16{
17  t foo,*bar;
18  memset(&foo,37,sizeof(t));
19  foo.size=sizeof(t);
20  bar=f(&foo,sizeof(t));
21  if(bar->super!=&foo||bar->name!=0||bar->size!=sizeof(t))abort();
22  exit(0);
23}
24