c++ 内存释放测试

vs 新建 Console 工程，代码如下：

class TestInfo
{
private:
	int* m_pInt;
public:
 
	TestInfo()
	{
		m_pInt = new int[100];
	}
 
	~TestInfo()
	{
		if (m_pInt)
		{
			std::cout << "delete ... " << m_pInt << std::endl;
			delete[] m_pInt;
		}
	}
 
	int* GetPointInt()
	{
		return m_pInt;
	}
};
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
 
	TestInfo* test1 = new TestInfo();
	std::cout << "test1 ... " << test1 << std::endl;
	std::cout << "test1 m_pInt ... " << test1->GetPointInt() << std::endl << std::endl;
	//delete test1;
 
	TestInfo* test2 = new TestInfo();
	std::cout << "test2 ... " << test2 << std::endl;
	std::cout << "test2 m_pInt ... " << test2->GetPointInt() << std::endl;
	delete test2;
 
	std::cout << std::endl;
	TestInfo* test3 = test1;
	std::cout << "test3 ... " << test3 << std::endl;
	std::cout << "test3 m_pInt ... " << test3->GetPointInt() << std::endl;
	delete test3;
 
	std::cout << std::endl;
	TestInfo* test4 = new TestInfo[3];
	for (int n = 0; n < 3; n++)
	{
		std::cout << "test4 ... " << n << ": " << (test4 + n) << std::endl;
		std::cout << "m_pInt ... " << (test4 + n)->GetPointInt() << std::endl << std::endl;
	}
 
	std::cout << std::endl;
	delete[] test4;
 
    return a.exec();
}

运行结果如下：

test1 ... 0000024403FFDF40
test1 m_pInt ... 0000024403FE3270
 
test2 ... 0000024403FFE030
test2 m_pInt ... 0000024403FE3480
delete ... 0000024403FE3480
 
test3 ... 0000024403FFDF40
test3 m_pInt ... 0000024403FE3270
delete ... 0000024403FE3270
 
test4 ... 0: 0000024403FF0A88
m_pInt ... 0000024403FE3270
 
test4 ... 1: 0000024403FF0A90
m_pInt ... 0000024403FE3480
 
test4 ... 2: 0000024403FF0A98
m_pInt ... 0000024403FE41B0
 
 
delete ... 0000024403FE41B0
delete ... 0000024403FE3480
delete ... 0000024403FE3270