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From: jason@cygnus.com (Jason Merrill)
Subject: Re: dynamic_cast<T> question
In-Reply-To: etse@scdt.intel.com's message of 2 Aug 1994 16:45:31 GMT
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>>>>> Eric Tse <etse@scdt.intel.com> writes:

> 	I wonder if I could do a safe down cast of the
> following using dynamic_cast<T> keyword:

> class B {..};
> class D : public B {..};
> class G : public D {..};

> void f(){
> 	B* b = 0;
> 	D* d = 0;
> 	G* g = new G();

> 	b = g;

> 	d = dynamic_cast<D*>(b);
> 	...
> }

If B has virtual functions, yes.  Otherwise, no.

Jason