delete a NULL pointer does not call overloaded delete when destructor is written

Question

class Widget
{
    public:
        Widget() {
            cout<<\"~Widget()\"<

        

Answer 1

I don't have a good answer, but I have simplified the issue slightly. The following code removes the operator new and exception handling:

#include 
using namespace std;

class Widget {

  public:
    Widget() {
        cout<<"Widget()"<

This still exhibits the same behaviour and des so on both VC++ and g++.

Of course, deleting a NULL pointer is a no-op, so the compiler does not have to call operator delete. If one actually allocates an object:

    Widget* w = new Widget;

then things work as expected.