[racket] Futures and shared data structure

On Mon, Dec 20, 2010 at 3:48 PM, Robby Findler
<robby at eecs.northwestern.edu> wrote:
> and, sure enough, looking at the expansion of the loop:
>
>  (for ([i (in-vector some-data)]) i)
>
> I see that it uses multiple values which, I believe are not safe for futures.
>
> I believe that this is a recent change and hopefully whoever did it
> will fix it (I'll post separately about this).

Whoops, no 5.0.2 also had this use of multiple values in it, and so
'for'+'in-vector' was not safe then either.

The expanded code doens't look very good, imo, tho, so perhaps whoever
recently was working on this can clean this part up too.

Robby