DLL采用运行时库MDD提示出现内存泄漏，采用MTD不会出现内存泄漏

Question

我编写了一个DLL，DLL中导出来了一个类，类里面定义了一个vector以及map，然后用exe去调用DLL，当DLL的运行时库使用MTD时，vs2010就不会报内存泄漏；DLL的运行时库使用MDD时，vs2010就会出现内存泄漏；另外，很奇怪的是，当DLL的运行时库使用MDD，exe调用DLL时，连接加载对应的DLL的lib，采用在代码中#pragma comment(lib,"../Debug/MemoryLeakDemo.lib")形式时，vs就不会提示内存泄漏，而在vs工程中的配置选项中连接的形式，就会提示出现内存泄漏；

DLL中的代码：
IncludeInc.h
#pragma once
#ifdef MEMORYLEAKDEMO_EXPORTS
#define MEMORYLEAKDEMO_EXPORTS _declspec(dllexport)
#else
#define MEMORYLEAKDEMO_EXPORTS _declspec(dllimport)
#endif

#include "ITestDemo.h"

MEMORYLEAKDEMO_EXPORTS ITestDemo* OPenSkinRes();

IncludeInc.cpp的代码：
#include "IncludeInc.h"
#include "TestDemo.h"

MEMORYLEAKDEMO_EXPORTS ITestDemo* OPenSkinRes(){
ITestDemo* pTemp = CTestDemo::GetInstance();
return pTemp;
}

ITestDemo.h代码
#pragma once
class ITestDemo{
public:
virtual int GetUI() = 0;
};
TestDemo.h中代码
#include "ITestDemo.h"
#include
#include
class CTestDemo :public ITestDemo
{
public:
static CTestDemo* GetInstance(){
static CTestDemo g_res;
return &g_res;
}
virtual int GetUI();
private:
CTestDemo(void);
~CTestDemo(void);
public:
static int s_sDemo1;
static std::string s_strDemo2;
private:
std::vector m_vecDynamic;
std::vector m_vecTest;
};
TestDemo.cpp代码：
#include "StdAfx.h"
#include "TestDemo.h"

int CTestDemo::s_sDemo1 =0;
std::string CTestDemo::s_strDemo2 = "Test";

CTestDemo::CTestDemo(void)
{
for (int i = 0; i < 100 ; i++)
{
m_vecDynamic.push_back(new int(i));
}
}

CTestDemo::~CTestDemo(void)
{
std::vector::iterator it = m_vecDynamic.begin();
for (; it != m_vecDynamic.end(); ++it)
{
int * pTemp = *it;
delete pTemp;
}
}
int CTestDemo::GetUI(){

return 1;

}

exe中的代码：
// CallMemoryLeak.cpp : Defines the class behaviors for the application.
//

#include "stdafx.h"
#include "CallMemoryLeak.h"
#include "CallMemoryLeakDlg.h"
#include "../MemoryLeakDemo/IncludeInc.h"
#include "../MemoryLeakDemo/ITestDemo.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

//#pragma comment(lib,"../Debug/MemoryLeakDemo.lib")
// CCallMemoryLeakApp

BEGIN_MESSAGE_MAP(CCallMemoryLeakApp, CWinApp)
ON_COMMAND(ID_HELP, &CWinApp::OnHelp)
END_MESSAGE_MAP()

// CCallMemoryLeakApp construction

CCallMemoryLeakApp::CCallMemoryLeakApp()
{
// support Restart Manager
m_dwRestartManagerSupportFlags = AFX_RESTART_MANAGER_SUPPORT_RESTART;

// TODO: add construction code here,
// Place all significant initialization in InitInstance

}

// The one and only CCallMemoryLeakApp object

CCallMemoryLeakApp theApp;

// CCallMemoryLeakApp initialization

BOOL CCallMemoryLeakApp::InitInstance()
{
// InitCommonControlsEx() is required on Windows XP if an application
// manifest specifies use of ComCtl32.dll version 6 or later to enable
// visual styles. Otherwise, any window creation will fail.
INITCOMMONCONTROLSEX InitCtrls;
InitCtrls.dwSize = sizeof(InitCtrls);
// Set this to include all the common control classes you want to use
// in your application.
InitCtrls.dwICC = ICC_WIN95_CLASSES;
InitCommonControlsEx(&InitCtrls);

CWinApp::InitInstance();


AfxEnableControlContainer();

// Create the shell manager, in case the dialog contains
// any shell tree view or shell list view controls.
CShellManager *pShellManager = new CShellManager;

// Standard initialization
// If you are not using these features and wish to reduce the size
// of your final executable, you should remove from the following
// the specific initialization routines you do not need
// Change the registry key under which our settings are stored
// TODO: You should modify this string to be something appropriate
// such as the name of your company or organization
SetRegistryKey(_T("Local AppWizard-Generated Applications"));

//就这两行调用代码，其他的都是MFC默认生成的
ITestDemo* pTeset = OPenSkinRes(); 
int iRet = pTeset->GetUI();

CCallMemoryLeakDlg dlg;
m_pMainWnd = &dlg;
INT_PTR nResponse = dlg.DoModal();
if (nResponse == IDOK)
{
    // TODO: Place code here to handle when the dialog is
    //  dismissed with OK
}
else if (nResponse == IDCANCEL)
{
    // TODO: Place code here to handle when the dialog is
    //  dismissed with Cancel
}

// Delete the shell manager created above.
if (pShellManager != NULL)
{
    delete pShellManager;
}

// Since the dialog has been closed, return FALSE so that we exit the
//  application, rather than start the application's message pump.
return FALSE;

}

Answer 1

MDD是调试的，一般用MTD好了。发布的时候也是用MTD