Bad array indexing is considered deadly

[Ola Fosheim Grøstad via Digitalmars-d]

Anyway, all of this boils down to the question of whether D 
really provides a safe programming environment.

If you only write safe code in a safe language, then it should be 
perfectly ok to trap and deal with a failed lookup, irrespective 
of what kind of data-structure it is.

So, if this isn't possible in D, then D isn't able to compete 
with other safe programming languages...

But then maybe one shouldn't try to sell it as a safe programming 
language either.

You can't really have it both ways.