I don't agree. Null is an artefact of the type system and the type system evaporates at runtime. Even C's NULL macro just expands to zero which is defined in the type system as the null pointer.
Address zero exists in the CPU, but that's not the null pointer, that's an embarrassment if you happen to need to talk about address zero in a language where that has the same spelling as a null pointer because you can't say what you meant.
Null doesn't expand to zero on some weird systems. tese days zero is special on most hardware so having zero and nullptr be the same is importnt - even though on some of them zero is also legal.
NULL exists on real CPUs. Maybe you meant nullptr which is a very different thing, don't confuse the two.
I don't agree. Null is an artefact of the type system and the type system evaporates at runtime. Even C's NULL macro just expands to zero which is defined in the type system as the null pointer.
Address zero exists in the CPU, but that's not the null pointer, that's an embarrassment if you happen to need to talk about address zero in a language where that has the same spelling as a null pointer because you can't say what you meant.
Null doesn't expand to zero on some weird systems. tese days zero is special on most hardware so having zero and nullptr be the same is importnt - even though on some of them zero is also legal.