What is happening during `delete this;` statement?

Question

Please consider the following code:

class foo
{
public:
    foo(){}
    ~foo(){}
    void done() { delete this;}
private:
    int x;
};

What is

Answer 1

Calling delete this is a bad idea. Whoever calls new should call the delete. Hence the problems as highlighted in the other responses.

Also you can have memory leaks/undefined behaviour when construcing an array of objects.