double freeing of freed memory

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最近在客户那里改用klockwork分析出的问题，遇到了这个问题：Double freeing of freed memory may be in class 'DriverInfo'. copy constructor and operator= is not defined。

自己写了个例子

#include <iostream>

class MyData
{
public:

MyData()
{
myData = new int;
printf("Created data: 0x%08X\n", myData);
}

~MyData()
{
printf("Destroying data: 0x%08X\n", myData);
delete myData;
}

private:
int* myData;
};

int main(int argc, char* argv[])
{
MyData test1;
MyData test2;

test2 = test1;

MyData test3(test1);
}
----------------------------------------------------------------------------------------------------------------
输出结果：
Created data: 0x00551d30
Created data: 0x00551d70
Destroying data: 0x00551D30
Destroying data: 0x00551D30
挂了。。。
这里有内存泄漏（0x00551d70）和多次释放资源。这个问题本质上应该是深拷贝和浅拷贝的问题。

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