GCC warnings for unused global variables

[Robert Dewar]

> And warning on perfectly legal, innocuous constructs makes
> absolutely no sense to me.

Well all warnings apply to legal constructs, or they would be errors!

As to innocuous, the reason why something is NOT an error is that you
can't tell whether it is innocous or not, so warnings almost always
generate some false positives (or they would not be warnings!)

In this case, it is not clear what you are suggesting, to remove all
warnings in this situation would certainly remove some very useful
warnings.