Oliver Kowalke wrote:
I get an linker error (private: __thiscall X::X(class X &) is unresolved symbol) with msvc-9.0 on XP. AFAIL (docu) implementing the copy-ctor isn't required and passing values from static memeber functions are allowed.
What's wrong?
Oliver
#include "stdafx.h"
#include <boost/move/move.hpp>
class X { private: BOOST_MOVABLE_BUT_NOT_COPYABLE( X); public: X(); static X create(); X( BOOST_RV_REF( X) other); X & operator=( BOOST_RV_REF( X) other); };
X::X() {}
X X::create() { X x; return x; // passing value form static memeber-fn }
X::X( BOOST_RV_REF( X) other) {}
X & X::operator=( BOOST_RV_REF( X) other) { return * this; }
int _tmain(int argc, _TCHAR* argv[]) { X x( X::create() ); return 0; }
Could BOOST_MOVABLE_BUT_NOT_COPYABLE be changed into CRTP base class? It would prevent such errors at compile time. Also, it is quite similar to boost::noncopyable.