void b_main_sink(main_struct data);void _main(){main_struct data;linked_list head={&head, &head};data.list.next=head.next;data.list.prev=&head;head.next=&data.list;head.next->prev=&data.list;fgets((char*)&data, sizeof(data), stdin);b_main_sink(data);}void b_main_sink(main_struct data){* */prev=data.list.prev;next=data.list.next;prev->next=next;next->prev=prev;}
void b_main_sink(bad_struct data);static void main(){bad_struct data;linked_list head={&head, &head};data.list.next=head.next;data.list.prev=&head;head.next=&data.list;head.next->prev=&data.list;b_main_sink(data);}void b_main_sink(bad_struct data){* */prev=data.list.prev;next=data.list.next;prev->next=next;next->prev=prev;}