// VC98 cl -GX PolymorphicPtr.cpp
// VC2005,2008,2010 
//      cl -EHsc PolymorphicPtr.cpp -FaPolymorphicPtr.asm -FAsc

#include <iostream>
using namespace std;

class Base
{
public:
    virtual void service();
};

void Base::service()
{
    cout << "Base::service()\n";
}

class Derived: public Base
{
public:
    virtual void service();
};

void Derived::service()
{
    cout << "Derived::service()\n";
}

void main()
{
    Base *bptr;
    Derived dObj;
    Derived *dptr = &dObj;
    bptr = &dObj;

    Base &bref = dObj;

//----------------- Static binding -------------------

    dObj.service();

//    lea     ecx, DWORD PTR _dObj$[ebp]
//    call    ?service@Derived@@UAEXXZ      ; Derived::service

    (&dObj)->service();

//    lea     ecx, DWORD PTR _dObj$[ebp]
//    call    ?service@Derived@@UAEXXZ      ; Derived::service

    dObj.Base::service();

//    lea    ecx, DWORD PTR _dObj$[ebp]
//    call   ?service@Base@@UAEXXZ  ; Base::service

    bptr->Base::service();

//    mov    ecx, DWORD PTR _bptr$[ebp]
//    call   ?service@Base@@UAEXXZ  ; Base::service

    dptr->Base::service();

//    mov    ecx, DWORD PTR _dptr$[ebp]
//    call   ?service@Base@@UAEXXZ  ; Base::service

    bref.Base::service();

//    mov    ecx, DWORD PTR _bref$[ebp]
//    call   ?service@Base@@UAEXXZ  ; Base::service

//    bptr->Derived::service(); // compilation error
    dptr->Derived::service();
//    bref.Derived::service();  // compilation error

//    mov    ecx, DWORD PTR _dptr$[ebp]
//    call   ?service@Derived@@UAEXXZ ; Derived::service

//----------------- Dynamic binding -------------------

    dptr->service();

//    mov   eax, DWORD PTR _dptr$[ebp]
//    mov   edx, DWORD PTR [eax]
//    mov   esi, esp
//    mov   ecx, DWORD PTR _dptr$[ebp]
//    mov   eax, DWORD PTR [edx]
//    call  eax
//    cmp   esi, esp
//    call  __RTC_CheckEsp

    bptr->service();
    (*bptr).service();

    bref.service();
    (&bref)->service();

}