Destructor Calls

Sequence followed by destructor calls #

• When we (directly or indirectly) call a destructor, a series of destructor calls may be triggered.
• This guarantees that each base object is properly destructed.
• The sequence of destructor calls starts with the most derived class and ends with the base class.

Example #

In the commented portion, the destructor sequence is mentioned when delete is called:

struct A{};
struct B: A{};
struct C: B{};
C* c = new C;          // A -> B -> C
delete c;              // ~C -> ~B -> ~A

We might have noticed that constructor calls follow the exact opposite behavior of destructor calls.