class EC
{
public:
	EC(){}
	~EC(){};
	void EC1()
	{
		printf("EC1\n");
	}
};

class EVC
{
public:
	EVC(){}
	~EVC(){};
	void EVC1()
	{
		printf("EVC1\n");
	}
	virtual void VEVC1()
	{
		printf("EVC1\n");
	}
};

int main(int argc, char*argv[])
{
	printf("%d\n", sizeof(EC));
	printf("%d\n", sizeof(EVC));
}

1
4

;--- e:\code\win32\dre\helloworld\main.cpp --------------------------------------
#include <stdio.h>

int _cdecl Test(int a, int b)
{
009E13A0  push        ebp  
009E13A1  mov         ebp,esp  
009E13A3  sub         esp,0C0h  
009E13A9  push        ebx  
009E13AA  push        esi  
009E13AB  push        edi  
009E13AC  lea         edi,[ebp-0C0h]  
009E13B2  mov         ecx,30h  
009E13B7  mov         eax,0CCCCCCCCh  
009E13BC  rep stos    dword ptr es:[edi]  
	return a+b;
009E13BE  mov         eax,dword ptr [a]  
009E13C1  add         eax,dword ptr [b]  
}
009E13C4  pop         edi  
009E13C5  pop         esi  
009E13C6  pop         ebx  
009E13C7  mov         esp,ebp  
009E13C9  pop         ebp  
009E13CA  ret								;无平衡堆栈，这类调用方式不用处理函数堆栈帧
;--- 无源文件 -----------------------------------------------------------------------


;--- e:\code\win32\dre\helloworld\main.cpp --------------------------------------

int _stdcall Test1(int a, int b)
{
009E13F0  push        ebp  
009E13F1  mov         ebp,esp  
009E13F3  sub         esp,0C0h  
009E13F9  push        ebx  
009E13FA  push        esi  
009E13FB  push        edi  
009E13FC  lea         edi,[ebp-0C0h]  
009E1402  mov         ecx,30h  
009E1407  mov         eax,0CCCCCCCCh  
009E140C  rep stos    dword ptr es:[edi]  
	return a+b;
009E140E  mov         eax,dword ptr [a]  
009E1411  add         eax,dword ptr [b]  
}
009E1414  pop         edi  
009E1415  pop         esi  
009E1416  pop         ebx  
009E1417  mov         esp,ebp  
009E1419  pop         ebp  
009E141A  ret         8						;平衡堆栈，这类调用方式需要处理函数堆栈帧
;--- 无源文件 -----------------------------------------------------------------------
;main
;{

	Test(1,2);
009E145E  push        2  
009E1460  push        1  
009E1462  call        Test (9E100Ah)  
009E1467  add         esp,8					;平衡堆栈，调用者需要处理函数堆栈帧
	Test1(1,2);
009E146A  push        2  
009E146C  push        1  
009E146E  call        Test1 (9E107Dh)		;无平衡堆栈，被调用者已处理函数堆栈帧

;}