char[] == null

[Spacen Jasset via Digitalmars-d-learn]

On Thursday, 19 November 2015 at 08:30:54 UTC, Jonathan M Davis 
wrote:
> On Wednesday, November 18, 2015 22:15:19 anonymous via 
> Digitalmars-d-learn wrote:
>> [...]
>
> Exactly. T[] _is_ a dynamic array. Steven's otherwise wonderful 
> article on arrays in D ( http://dlang.org/d-array-article.html 
> ) made the mistake of calling the buffer that T[] points to on 
> the GC heap (assuming that even does point to the GC heap) the 
> dynamic array. And per the language spec, that's not true at 
> all.
>
> [...]

I mentioned this because it's bit of an error trap, that I fell 
into.

char[] == null
vs
char[] is null

Is there any good use for char[] == null ? If not, a warning 
might be helpful.