// dll
#include <memory>

__declspec(dllexport) std::auto_ptr<int> get();

__declspec(dllexport) std::auto_ptr<int> get()
{
    return std::auto_ptr<int>(new int());
}

// exe
#include <iostream>
#include <memory>

__declspec(dllimport) std::auto_ptr<int> get();

int main() {
    {
        std::auto_ptr<int> x = get();
    }
    std::cout << "done\n";
    getchar();
}

The following code run perfectly OK under VC9. However, under VC6, I will experience an immediate crash with the following message.

Debug Assertion Failed!

Program: C:\Projects\use_dynamic_link\Debug\use_dynamic_link.exe File: dbgheap.c Line: 1044

Expression: _CrtIsValidHeapPointer(pUserData)

Is it exporting auto_ptr under VC6 is not allowed?

It is a known problem that exporting STL collection classes through DLL.

http://stackoverflow.com/questions/2451714/access-violation-when-accessing-an-stl-object-through-a-pointer-or-reference-in-a

However, I Google around and do not see anything mention for std::auto_ptr.

Any workaround?