CObject Copy constructor Error(C2248) in debug build

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Hi to all. I have been trying to debug an application but it is giving me error only in debug
build. release build works fine. do i need to change some project settings or exclude some dlls?
i get the following debug output message in output window.

C:\Program Files\Microsoft Visual Studio 10.0\VC\atlmfc\include\afxtempl.h(262): error
C2248: 'CObject::CObject' : cannot access private member declared in class 'CObject'

C:\Program Files\Microsoft Visual Studio 10.0\VC\atlmfc\include\afx.h(535) : see
declaration of 'CObject::CObject'

C:\Program Files\Microsoft Visual Studio 10.0\VC\atlmfc\include\afx.h(510) : see
declaration of 'CObject'

This diagnostic occurred in the compiler generated function
'CArray<type,arg_type>::CArray(const CArray<type,arg_type> &)'
with
[
TYPE=CString,
ARG_TYPE=CString
]

Posted 12-Mar-13 0:22am

Abhijeet Shetkar

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Binu MD 12-Mar-13 6:57am

please tell about the project settings that you were changed.

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Eugen Podsypalnikov · Answer 1 · 2013-03-12T00:55:00

This is a protection :) :

C++

private:
    CObject(const CObject& objectSrc);              // no implementation

...while the CArray class has not a copy constructor.

Why is it a "protection" ?
CArray do not know how its members must be copied, and CObject (base) as well... :)

So, for example, the code:

C++

{
  CArray<CString>* pArray(new CArray<CString>);
  pArray->Add(_T("One"));
  pArray->Add(_T("Two"));

  CArray<CString> arTest(*pArray);

  delete pArray;
  pArray = NULL;

  TCHAR tchTest(arTest[0].GetAt(1) + arTest[1].GetAt(2));
}

... may provide a crash at its last line :)