bug#5570: automatic cache validation

[Chong Yidong]

> >>> Does
> >>>    M-x (c-state-cache-init)
> >>> fix it?
> >
> >> No, it does not.
> >
>
> I just got the problem again, while editing gtkutil.c in Emacs.  There
> M-: (c-state-cache-init) did indeed fix the problem.
>
> So it sometimes help.  I guess this only adds to the confusion...

You sent this message on March 22.  That was the date Alan checked this
into the branch:

   2010-03-22  Alan Mackenzie  <acm@muc.de>

      * progmodes/cc-engine.el (c-remove-stale-state-cache):
      Fix off-by-one error.  Fixes bug #5747.

The patch was merged to the trunk a couple days later.  I don't know
whether you were running with it when you made the above observation.

So, are you still observing the problem after the patch?