[plt-scheme] problems with #%datum (was: Re: [plt-bug] all/9476: Debugger broken on mzscheme + kw)

From: John Clements (clements at brinckerhoff.org)
Date: Tue Sep 9 13:28:55 EDT 2008

On Jun 11, 2008, at 5:07 AM, Matthew Flatt wrote:

> At Tue, 10 Jun 2008 22:20:15 -0700, John Clements wrote:
>> On Jun 10, 2008, at 10:00 PM, eli at barzilay.org wrote:
>>> A new problem report is waiting at
>>>  http://bugs.plt-scheme.org/query/?cmd=view&pr=9476
>>> Reported by Eli Barzilay for release:
>>> *** Description:
>>> Trying to debug the program below throws an error:
>>>  require: namespace mismatch; reference (phase 0) to a
>>>  module "/home/scheme/plt/collects/scheme/private/kw.ss" that is
>>>  not available (phase level 0) in: #%app
>> FWIW, this is also the error encountered by the stepper tests in all
>> of the test cases that involve running the stepper on non-teaching
>> languages.
> The problem happens when a tool adds code to the a program, and when
> the added code uses `#%app' from `scheme/base'.
> The solution is to explicitly use `#%plain-app' for the added code.
> I'll fix the debugger...

I fussed with the language fields of the modules used by the stepper's  
test code, & now I have a related problem that happens on expansion of  
annotater-decorated code.

require: namespace mismatch; reference (phase 0) to a module "/Users/ 
clements/plt/collects/scheme/private/old-ds.ss" that is not available  
(phase level 0) in: #%datum

I took a look at old-ds.ss and ... I'm still confused.  It's quite  
short, and appears to be a compatability definition of an old define- 

It appears to me that the next step is to isolate the piece of the  
annotator that inserts the offending #%datum, and hope that something  
comes to mind; perhaps I'm inadvertently capturing and inserting a  
binding for #%datum that depends on old-ds.ss.

Any suggestions appreciated.

Many thanks,

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