[ntdll/tests] Added some NULL testing

[Alexandre Julliard]

Paul Vriens <Paul.Vriens at xs4all.nl> writes:

> It's just that I'm going through a lot of the Coverity reports. A great
> deal of them mention NULL parameters passed. That why I started writing
> these checks and found that we're not always a 100% in line with M$.

Yes, but that's deliberate, we don't want to add too many
checks. Windows in many cases uses exception handlers, but that's
quite expensive without compiler support.

> I will try and not change 'real' code to check that much for NULLs but
> couldn't we leave the test cases (with todo_wine of course) for
> documentation sake?

If you have written them already, sure, but we don't want to
systematically add test cases for NULL.

-- 
Alexandre Julliard
julliard at winehq.org