default constructors of __declspec(selecany) variables not called by tobias.loew

In the following example the constructor of stc_a is not called at startup, so the vtable is 0 and the program crashes at the call to foo() through a pointer to stc_a.
With stc_a_dummy (using the constructor with one argument) everything works fine.

///////////////////////////////////////////////////////////////////////////////

#include <tchar.h>

class a
{
public:
    a()
    {}

    a(bool dummy)
    {}

    virtual void foo() const
    {}
};


__declspec( selectany ) extern const a stc_a;             // <-- not initialized at startup
__declspec( selectany ) extern const a stc_a_dummy(false);

int _tmain(int argc, _TCHAR* argv[])
{
    stc_a.foo();

    const a* ptr_a_dummy = &stc_a_dummy;
    ptr_a_dummy->foo();

    const a* ptr_a = &stc_a;
    ptr_a->foo();             // <-- crash !

    return 0;
}