Re: What the hell is dynamic_cast for?

Victor Bazarov <>
Wed, 28 May 2008 15:29:46 -0400
Fernando G?mez wrote:

On May 28, 2:15 pm, David C?me <> wrote:

On Wed, 28 May 2008 21:07:26 +0200, Fernando G?mez

<> wrote:

On May 28, 12:48 pm, Victor Bazarov <> wrote: wrote:

Suppose I have the following three classes,
   GrandBase <-- Base <-- Child <-- GrandChild
The following cast expression holds true only if pBase points object
of type of ``Child'' or ``GrandChild'', i.e. types not upper than
Child in the above class hierarchy,
Do I draw this correctly?

You missed the parentheses and your class has to be polymorphic (have at
least one virtual function).

Wouldn't that be: "have a vritual destructor"?

No. He is right.

So, can you have a polymorphic class without a virtual destructor?

You don't need a virtual destructor if you're not planning on
polymorphic destruction.

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