assert()在Release模式是不会起作用的

唉，不能道听途说，"assert()在Release模式也会起作用的"，需要自己动手测试才行。

下面的测试证明：assert函数在Release模式是不会起作用的。

测试类CTestClass:

#pragma once

#include <iostream>
#include <assert.h>
using namespace std;

class CTestClass
{
public:
    CTestClass(UINT iPosBegin, UINT iPosEnd)
    {
        m_iPosBegin = iPosBegin;
        m_iPosEnd = iPosEnd;
        m_iExpectSize = m_iPosEnd - m_iPosBegin;
        assert(m_iExpectSize > 0);
    }
    ~CTestClass(){}

    void OutputInfo()
    {
        cout<<"------------------Output Info Begin---------------------"<<endl;
        cout<<"Position Begin:	"<<m_iPosBegin<<endl;
        cout<<"Position End:	"<<m_iPosEnd<<endl;
        cout<<"Segment Length:	"<<m_iExpectSize<<endl;
        cout<<"------------------Output Info  End---------------------"<<endl;
    }

    INT64 m_iPosBegin;
    INT64 m_iPosEnd;
    INT64 m_iExpectSize;//Mustn't use UINT64 coz it may be negative
};

调用方法：

void main()
{
    #define  SAFE_DELETE_OBJECT(obj) if(obj) {delete obj; obj = NULL;}

    CTestClass* obj1 = new CTestClass(10, 100);
    if(obj1)
        obj1->OutputInfo();
    else
        cout<<"Object 1 Create Failed."<<endl;

    CTestClass *obj2 = new CTestClass(100, 10);
    if(obj2)
        obj2->OutputInfo();
    else
        cout<<"Object 2 Create Failed."<<endl;
    
    SAFE_DELETE_OBJECT(obj1);
    SAFE_DELETE_OBJECT(obj2);

    system("pause");
}

Release模式下测试结果：

------------------Output Info Begin---------------------
Position Begin: 10
Position End:   100
Segment Length: 90
------------------Output Info  End---------------------
------------------Output Info Begin---------------------
Position Begin: 100
Position End:   10
Segment Length: -90
------------------Output Info  End---------------------
请按任意键继续. . .