Re: dynamic_cast from a const class

[Florian Weimer <fweimer@xxxxxxxxxx>]

On 06/11/2013 07:23 PM, david.hagood@xxxxxxxxx wrote:
> > The dynamic_cast operator shall not cast away constness (5.2.11).
> >
> >
> > class A {
> > };
> >
> > class B : public A {
> > };
> >
> > int main() {
> >     A* a;
> >     B* b = new B();
> >     a = dynamic_cast<const A*>(b);
> >     return 0;
> > }
>
> You aren't casting *away* const-ness, you are adding const-ness (and then
> discarding it when you assign to A - which should be an error).

I agree about the error part—Andrey, could you please file a bug?

--
Florian Weimer / Red Hat Product Security Team