warn_unused_vars (Was: Re: Noob - Getting Started Infinte Loop?)

Thomas Lindgren <>
Fri Sep 1 09:57:58 CEST 2006

--- Richard Carlsson <> wrote:

> Robert Virding wrote:
> > Actually this is simple way to get rid of the
> annoying whining by the
> > compiler, just prepend every variable with _ and
> it keeps quiet. :-)
> > 
> > Seriously I would prefer the default to be to keep
> quiet.
> Seriously, that would be a bad idea. It catches
> _way_ too many errors
> (nasty, hard-to-find typo bugs) to be turned off by
> default.
> Oh, not in _your_ code, of course. Goes without
> saying. ;-)

Not in my experience. I have it turned off in my
makefiles and aren't having any problems worth

If we're talking microfeatures, implicit variable
matching has been a larger source of bugs, likewise
the bizarro-world scoping rules for BIFs.

Anyway, since this particular one can be turned off
with a compiler switch (+nowarn_unused_vars, Robert),
it's not a big problem in my book.


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