C++ : Is it valid to cast from A* to B* via dynamic_cast when A and B haven't a common ancestor?

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C++ : Is it valid to cast from A* to B* via dynamic_cast when A and B haven't a common ancestor?
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C++ : Is it valid to cast from A* to B* via dynamic_cast when A and B haven't a common ancestor?
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A* to when A B* dynamic_cast via from and valid ancestor? cast to : Is a B it common C++ haven't



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