Detector for unused variables

[bearophile]

Namespace:

> I think my english isn't good enough to make a persuasive 
> comment there, but i will try it this evening. I will simply 
> copy my post above.

Your English skills seems enough, but in the end what's important 
is to show that some people care to have for this warning.
Walter is usually right, but once in a while he's wrong, and some 
stubbornness is needed to show it :)

Bye,
bearophile