C / C++ / MFC

node a(3); // a, will be deleted as a stack variable
a.next = new node(4); // b, will be deleted by unique_ptr of a
a.next->next = new node(5); // c, will be deleted by unique_ptr of b
// 1. deleting of b, not "tested" :) :
a.next = move(a.next->next); // is there a crash ?
// 2. then deleting of b, old style :) :
unique_ptr<node> temp = move(a.next->next);
a.next = move(temp);

struct node {
  int m_iData;
  node* m_pNext;

  node(int iData) : m_iData(iData), m_pNext(NULL) {}
  ~node() { delete m_pNext; }

  node* detach() { node* prevNext(m_pNext); m_pNext = NULL; return prevNext; }
} a(3);

They sought it with thimbles, they sought it with care;
They pursued it with forks and hope;
They threatened its life with a railway-share;
They charmed it with smiles and soap.

a.next = b;