boost::shared_ptr::shared_ptr(const boost::shared_ptr&)' is implicitly declared as deleted

Question

#include 
#include 
#include 
using namespace std;

struct Node
{
    Node(int data, boost::         


        

Answer 1

This is a bug in older versions of boost::shared_ptr that makes it incompatible with C++11 compilers.

The final C++11 standard says that declaring a move constructor or move assignment operator prevents the implicit definition of a copy constructor, but older versions of boost::shared_ptr do not respect that rule and assume that a copy constructor will be implicitly defined.

You either need to upgrade to Boost version 1.48 or later, or edit the Boost headers to add this to shared_ptr:

shared_ptr(const shared_ptr&) = default;