Re: static vars

[Rick Riolo]

I can't really tell for sure what you did from your description,
but the symptoms ("moved one thing from here to there, then
it only worked after a make clean") sounds like a case
where addressing gets messed up. 
You say you:
   > I moved the static vars to the "h" file as part of the object def (just a
   > different way of making a static.)
Do you really mean you put it in the class definition?
If so, perhaps some other class has knowledge/use of that class,
and you don't have the dependencies correct in your Makefile.
So on the first make, you re-made your object, changing
the underlying structure size, instance variable locations, etc.
But that other object didn't get re-made, and when it accesses
the object it gets screwed up.
And so the re-make fixed it.
Note other files don't need to know about that variable you moved,
just know about and use that class.

As I said, its just a guess from the symptoms you list.

Regarding your first report, of it not working as expected
when declared static in the method, I couldn't tell exactly
what the problem was from what you showed.
Did you mean that after you did the loop assigning from new
to old that if you did a printf of old right then
that it did not have the new values?

  - r

Rick Riolo                           address@hidden
Program for Study of Complex Systems (PSCS)
4477 Randall Lab                
University of Michigan         Ann Arbor MI 48109-1120
Phone: 734 763 3323                  Fax: 734 763 9267
http://www.pscs.umich.edu/PEOPLE/rlr-home.html

On Sun, 27 Sep 1998, donalson wrote:

> Date: Sun, 27 Sep 1998 15:59:31 -0700
> From: donalson <address@hidden>
> To: address@hidden
> Subject: Re: static vars
> 
> Marcus,
> 
>   Since you and I agree on that, I have to believe that there is something
> weird in Cygnus.
> I moved the static vars to the "h" file as part of the object def (just a
> different way of making a static.)
> (Note I no longer declaired than static.)  The result was that my program
> quit running, ie all the initialization worked, but the schedule never
> started.  I finally discovered that I could get it to work only if I did a
> "make clean" before remaking it.  This is particullarly odd because those
> variables are never referenced outside the object itself, and there are no
> other variables even close to that name anywhere else in the program.
> 
> Oh well...
> 
> Cheers,
> 
> D3
> 
> Marcus G. Daniels wrote:
> 
> > >>>>> "D3" == donalson  <address@hidden> writes:
> >
> > D3> I thought that static meant that when the method was used, "old"
> > D3> would contain the previous values of "new".
> >
> > The elements in `old' should each retain their last assigned value.
> >
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