Managed C++ destructor bug?

[Mark]

I am having a problem using destructors in managed C++ and
would appreciate help in finding a solution.

Thanks

Mark

----------- Error and Test Code -------------------------

The linker throws this error when the code below is built:

testmanagedCxx error LNK2001: unresolved external
symbol "void __cdecl __CxxCallUnwindDtor(void (__thiscall*)
(void *),void *)" (?
__CxxCallUnwindDtor@@$$J0YAXP6EXPAX@Z0@Z)
// This is the main DLL file.

#include "stdafx.h"

#include "testmanagedCxx.h" // the header does not
contain any code

namespace testmanagedCxx
{
public __gc class Base
{
private:
String *s;
public:
Base() { s = new String(L"hello"); }
~Base() { s = 0; }
};

public __gc class Derived : public Base
{
public:
Derived() {}
~Derived() {}
};
}

[Tian Min Huang]

Hi Mark,

Thanks for your post. Based on my experience and research, this function is
implemented in msvcr70.dll (or msvcr71.dll). To resolve the problem, you
can explicitly linking the project to the CRT library (msvcrt.lib or
msvcrtd.lib, depending on your build flavour) by the following steps:

1. Right-click the project in the Solution Explorer, choose Properties.
2. Go to "Configuration Properties" -> "Linker" -> "Input".
3. Add msvcrt.lib (or msvcrtd.lib if it's a debug build) to the Additional
Dependencies property.

Hope this helps.

Regards,

HuangTM
Microsoft Online Partner Support
MCSE/MCSD

Get Secure! -- www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

[Leon Finker]

Check:

http://groups.google.com/groups?q=__CxxCallUnwindDtor
"Mark" <mh*@yadayada.com> wrote in message
news:14****************************@phx.gbl...

I am having a problem using destructors in managed C++ and
would appreciate help in finding a solution.

Thanks

Mark

----------- Error and Test Code -------------------------

The linker throws this error when the code below is built:

testmanagedCxx error LNK2001: unresolved external
symbol "void __cdecl __CxxCallUnwindDtor(void (__thiscall*)
(void *),void *)" (?
__CxxCallUnwindDtor@@$$J0YAXP6EXPAX@Z0@Z)
// This is the main DLL file.

#include "stdafx.h"

#include "testmanagedCxx.h" // the header does not
contain any code

namespace testmanagedCxx
{
public __gc class Base
{
private:
String *s;
public:
Base() { s = new String(L"hello"); }
~Base() { s = 0; }
};

public __gc class Derived : public Base
{
public:
Derived() {}
~Derived() {}
};
}