C ++ destructor: when is memory freed?

Question

If I delete an object that calls its destructor, will memory be freed before or after the destructor has finished doing everything the function has?

Answer 1

Memory is freed only after the destruction of a subobject of the least derived class. Therefore, if you have:

class Base {
};

class Derived : public Base {
public:
    ~Derived();
};

it is first Deriveddestroyed, then Basedestroyed, and only then is memory freed.

Answer 2

Fold it deleteinto what it actually does, and see relatively clearly when the memory is deleted. So, an expression like this:

delete some_ptr;

It is roughly equivalent to this pseudo code:

some_ptr->~some_ptr();
free( some_ptr );

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Answer 3

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Answer 4

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Answer 5

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Answer 6

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