Catching array out of bounds

[grauzone]

Justin Johansson wrote:
> Also (and I' not 100% sure about this) that you might need to
> declare a variable along with the catch statement like as follows
> (at least that's what I always do regardless of whether or
> not it may be omitted) ...

And he should remember that out of bounds checking is enabled only in 
debug builds. In release builds, out of bounds accesses will simply lead 
to undefined behavior.