D-Programming-Language/dmd — pull request #476 by 9rnsr (2011-10-27 12:03:47+00:00)
Title: Issue 5416 & 5889 - typeof(null) should have a type of its own

Issue 5416 - null should have a type of its own
Issue 5899 - auto-return function cannot match 'null' with reference type.

`typeof(null)` should have the own type, that is implicitly convertible to *any reference types*.
In binary level, `typeof(null)` is treated as `void*`