（转载）警惕“delete void*”

//:BadVoidPointerDeletion.cpp
#include <iostream>
using namespace std;

class Object
{
void* data; // Some storage
const int size;
const char id;
public:
Object(int sz, char c) : size(sz), id(c)
{
data = new char[size];
cout << "Constructing object " << id
<< ", size = " << size << endl;
}
~Object()
{
cout << "Destructing object " << id << endl;
delete []data; // OK, just releases storage,
// no destructor calls are necessary
}
};

int main()
{
Object* a = new Object(40, 'a');
delete a;
void* b = new Object(40, 'b');
delete b; //会释放Object对象的内存，但不会释放data所指向的内存，即不会执行析构函数
}