Is NULL defined as nullptr in C++11?

Question

Will C++11 implementations define NULLas nullptr?

Would this be prescribed by the new C++ standard?

Answer 1

No, NULL is still the same as before. Too many people used the NULL macro in surprising ways, redefining it to nullptr would have broken a lot of code.

To elaborate: people have used NULL for example for many kinds of handle typedefs. If the real type behind such a typedef is not a pointer, defining NULL as nullptr would be a problem. Also, it seems some people have indeed used NULL to initialize numeric types.

At least that is what Microsoft found when they added the nullptr to MSVC10, and why they decided to keep NULL as it always was. Other compilers might choose a different path, but I don't think they would.