[Ecls-list] Re: CL-Containers error on ECL

[Gary King]

this is odd. I'll add it to my list. Can ECL run on a PowerPC mac?

On May 23, 2006, at 5:51 PM, Greg Pfeil wrote:

> I'm getting an error when I load the current version of CL- 
> Containers in ECL. However, looking at the code, I don't see a  
> problem. It seems to be happening in the CONTENTS-AS-HASHTABLE- 
> MIXIN DEFCLASS form, when the contents accessor is declared.
>
> > (asdf:oos 'asdf:load-op :cl-containers)
> ...
> ;;; Compiling /home/pfeil/Lisp/cl-containers/dev/containers.lisp.
> ...
> ;;; Compiling (CLOS::INSTALL-METHOD 'MAKE-CONTAINER-FOR-CONTENTS ...).
> ;;; Warning: The variable OBJECT is not used.
> ;;; Compiling (DEFCLASS CONTENTS-AS-HASHTABLE-MIXIN ...).
> ;;; Warning: Class KEY-VALUE-ITERATABLE-CONTAINER-MIXIN has been  
> forward referenced.
> There is no method on the generic function CONTENTS that agrees on  
> qualifiers NIL and specializers (#<The STANDARD-CLASS CONTENTS-AS- 
> HASHTABLE-MIXIN>)
> Broken at LAMBDA.
> METABANG.CL-CONTAINERS>>
>
> It's a DEFCLASS* macro:
>
> (DEFCLASS CONTENTS-AS-HASHTABLE-MIXIN (USES-CONTENTS-MIXIN
>                                        KEY-VALUE-ITERATABLE- 
> CONTAINER-MIXIN
>                                        FINDABLE-CONTAINER-MIXIN)
>   ((CONTENTS :ACCESSOR CONTENTS)))
>
> but the expansion looks fine to me, too:
>
> (EVAL-WHEN (:COMPILE-TOPLEVEL :LOAD-TOPLEVEL :EXECUTE)
>   (PROGN
>     (PROGN
>       (DEFCLASS CONTENTS-AS-HASHTABLE-MIXIN (USES-CONTENTS-MIXIN
>                                              KEY-VALUE-ITERATABLE- 
> CONTAINER-MIXIN
>                                              FINDABLE-CONTAINER-MIXIN)
>         ((CONTENTS :ACCESSOR CONTENTS)))
>       (VALUES 'CONTENTS-AS-HASHTABLE-MIXIN))
>     (SETF (METABANG.UTILITIES::DEFCLASS*-SUPERCLASSES 'CONTENTS-AS- 
> HASHTABLE-MIXIN)
>           '(USES-CONTENTS-MIXIN KEY-VALUE-ITERATABLE-CONTAINER-MIXIN
>             FINDABLE-CONTAINER-MIXIN))
>     'CONTENTS-AS-HASHTABLE-MIXIN))
>
> If I remove that form, it happens at the next one. However, there  
> are many DEFCLASS* forms _before_ this point, which all compile  
> fine, apparently.
>


-- 
Gary Warren King
metabang.com
http://www.metabang.com/
(413) 210 7511
gwking on #lisp (occasionally)