DMD can implicitly convert class pointer to the bool. Is it bug or terrible feature?

[deadalnix]

On Sunday, 24 November 2013 at 21:00:53 UTC, Maxim Fomin wrote:
> It is comparison with NULL and zero (I though it is obvious 
> that the code snippet is written in C), because NULL is always 
> zero by definition ("an integer constant expression with the 
> value 0, or such an expression casted to void*"). If this is 
> not the case, then implementation is broken. Which of them you 
> are talking about?

http://c-faq.com/null/machexamp.html