class Some {           // 'Missing User-defined Operation' warning issued here
                       // - class has user declarations for some, but not all, of the
                       //   'Rule of Five' operations
  public:
    Some(Some &x);                // Copy constructor
    Some(Some &&x);               // Move constructor
    // No destructor, copy assignment, or move assignment declared
};

class All  {                      // ok: all 'Rule of Five' operations are declared
  public:
    ~All();                       // Destructor
    All(All & other);             // Copy constructor
    All(All && other);            // Move constructor
    All& operator=(All & other);  // Copy assignment
    All& operator=(All && other); // Move assignment
};

class PointerWrapper { // 'Missing User-defined Operation' warning issued here
                       // - class has pointer-typed member data but does not declare the
                       //   'Rule of Five' operations
  private:
    int *myptr;
};

class IntWrapper {                // ok: class does not declare any 'Rule of Five' operations,
                                  // and does not have any pointer-typed member data.
  private:
    int myval;
};