[patch] Refactor the Used flag logic (and a small bug fix)

[Rafael Espíndola]

On 23 October 2013 12:48, Rafael Espíndola <rafael.espindola at gmail.com> wrote:
> I am having second thoughts about this patch. IsUsed is a common
> operation. We probably don't want to loop in it. We could loop in
> setUsed to set every decl used, but we still have the problem of what
> to do about UsedAttr.
>
> In the end having the callers be careful might be the best, but
> brittle, solution. I will see if I can fix the small bug without
> introducing a loop in isUsed.

OK. Attached is a patch that fixes the bug and nothing else. That way
we should be able to discuss the refactoring in isolation.

Cheers,
Rafael
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