Why use reinterpret_cast to get a null pointer of type void* when 0 is already a null pointer constant? i.e. you could use static_cast<void*>(0).

Even so, I think (void*)0 is a clearer way to say "null pointer of type void*".

This is also wrong. reinterpret_cast<void*>(0) is not guaranteed to give you a null pointer value.

Thanks for correcting me. I thought (void*)0 was doing a reinterpret_cast as it would for any int other than a literal 0. I forgot that literal 0 is magical and results in a "standard pointer conversion" (http://eel.is/c++draft/conv#ptr-1) which doesn't have explicit syntax to designate.

Closing.