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Re: dynamic_cast from a const class

On 12.06.2013 16:12, Florian Weimer wrote:

On 06/11/2013 07:23 PM, david.hagood@gmail.com 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 partâAndrey, could you please file a bug?
Done, PR57599. C++ quirks make me be never sure whether something is actually a bug, so I wanted to double check.. 

Andrey
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