When should my destructor be virtual?, C++ FAQ

C++ FAQ

From Marshall Cline: Bjarne Stroustrup, Herb Sutter, Andrei Alexandrescu, Pearson / Addison-Wesley Publishers and I collaborated to create a new C++ Super-FAQ! It's a team effort, with huge contributions from each of us and with amazing support from dozens of brilliant editors. The result is "awesomer" than ever! I originally wrote/published the FAQ in 1991 and now look forward to this new phase - and to continue working with it for another 20 years!

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FAQ: When should my destructor be `virtual`? ←(in the new Super-FAQ)

It's in Section: Inheritance — virtual functions:

FAQ: What is a "virtual member function"?
FAQ: How can C++ achieve dynamic binding yet also static typing?
FAQ: Difference between calling virtual and non-virtual member functions?
FAQ: Implementation details and efficiency of calling a virtual function?
FAQ: How can a member function in my derived class call the same function from its base class?
FAQ: Using dynamic binding with objects in heterogeneous containers?
FAQ: When should my destructor be virtual? (this FAQ)
FAQ: What is a "virtual constructor"?