[racket-dev] Sandbox evaluation problem - files with comment boxes

Ok, thank you! I can use the latest build.
--- nadeem

On Tuesday, January 27, 2015, Matthew Flatt <mflatt at cs.utah.edu> wrote:

> Yes, it's a bug in v6.1.1. I've just pushed a repair for the next
> build.
>
> Do you need a workaround for v6.1.1? Your variant that sets
> `sandbox-namespace-specs` is what I would have tried; unfortunately,
> that runs into a second bug in v6.1.1 that I recently fixed. If you
> need a workaround other than using the next snapshot, I can look harder
> for one.
>
> Thanks for the report!
>
> At Mon, 26 Jan 2015 21:27:31 -0500, Nadeem Abdul Hamid wrote:
> > Ah, I am still struggling with this sandbox problem! (previous message to
> > 'users' below) I'm starting to feel like maybe there's a bug in 6.1.1, or
> > else something changed in recent versions that I'm missing. The following
> > screenshots show the entire contents of the BSL file that I'm trying to
> > load using make-module-evaluator, with gracket v6.1.1 failing the second
> > time you try to load the file (or another one) that contains a comment
> box,
> > while racket v6.1.1 and gracket 6.0 don't have this behavior:
> >
> > http://cs.berry.edu/~nhamid/temp/foo.png
> > http://cs.berry.edu/~nhamid/temp/foo60.png
> >
> > ???
> >
> > --- nadeem
> >
> >
> >
> > ---------- Forwarded message ----------
> > From: Nadeem Abdul Hamid <nadeem at acm.org <javascript:;>>
> > Date: Sun, Jan 25, 2015 at 10:35 PM
> > Subject: Sandbox evaluation problem - files with comment boxes
> > To: users <users at racket-lang.org <javascript:;>>
> >
> >
> >
> > I'm trying to create a simple sandbox evaluator (to load in programs in
> > *SL). I have the following code:
> >
> > #lang racket
> > (require racket/sandbox)
> > (define E
> >   (parameterize ([sandbox-path-permissions
> >                   '([write "/var/folders"]
> >                     [exists "/"]
> >                     [read "/"])]
> >                  )
> >     (make-module-evaluator (string->path "test-file.rkt"))))
> >
> >
> > This works fine as long as test-file.rkt does *not* contain a comment
> box.
> > If the file contains a comment box, then the following error occurs:
> >
> > /Applications/Racket
> > v6.1.1/share/pkgs/snip-lib/racket/snip/private/load-one.rkt:21:2:
> > dynamic-require: unknown module
> >   module name: #<resolved-module-path:"/Applications/Racket
> > v6.1.1/share/pkgs/gui-lib/framework/main.rkt">
> >
> >
> >
> > I thought maybe parameterizing sandbox-namespace-specs with 'framework
> > might do something:
> >
> > (require racket/sandbox racket/gui)
> > (define E
> >   (parameterize ([sandbox-path-permissions
> >                   '([write "/var/folders"]
> >                     [exists "/"]
> >                     [read "/"])]
> >                  [sandbox-namespace-specs
> >                   (list make-gui-namespace 'framework)]
> >                  )
> >     (make-module-evaluator (string->path "lab01-insulin.rkt"))))
> >
> > But it results in:
> >    namespace-attach-module: a different instance of the same module is
> > already in the destination namespace
> >   module name: "/Applications/Racket
> > v6.1.1/collects/racket/stxparam-exptime.rkt"
> >
> >
> > Any suggestions?
> >
> > Thanks!
> >
> > --- nadeem
> > _________________________
> >   Racket Developers list:
> >   http://lists.racket-lang.org/dev
>


-- 

--
Nadeem Abdul Hamid
Associate Professor, Computer Science
Berry College, Mount Berry, GA 30149
http://cs.berry.edu/~nhamid/
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