[Ecls-list] CL-Containers error on ECL

[Greg Pfeil]

On 31 May 2006, at 5:06, Gary King wrote:

> Thanks for the update. Can you post a backtrace?

Oh, right ... I kind of forget ECL even has them ;)

;;; 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>> :b
Backtrace: > LAMBDA > lambda > lambda > clos:ensure-class > eval
METABANG.CL-CONTAINERS>>

And I just connected to it via slime-connect, which gave me the same  
error, but with some additional output:

;;; Compiling (DEFCLASS CONTENTS-AS-HASHTABLE-MIXIN ...).
;;; Warning: Class KEY-VALUE-ITERATABLE-CONTAINER-MIXIN has been  
forward referenced.
;;; Compiling (CLOS:ENSURE-CLASS 'CONTENTS-AS-HASHTABLE-MIXIN ...).
;;; The form (CLOS:ENSURE-CLASS 'CONTENTS-AS-HASHTABLE-MIXIN  
:DIRECT-SUPERCLASSES '(USES-CONTENTS-MIXIN  
KEY-VALUE-ITERATABLE-CONTAINER-MIXIN FINDABLE-CONTAINER-MIXIN)  
:DIRECT-SLOTS '((:NAME CONTENTS :INITFORM CLOS::+INITFORM-UNSUPPLIED+  
:INITFUNCTION NIL :INITARGS NIL :READERS (CONTENTS) :WRITERS ((SETF  
CONTENTS)) :ALLOCATION :INSTANCE :DOCUMENTATION NIL))) was not  
evaluated successfully.
;;; You are recommended to compile again.
CL-USER>

which looks like this when cleaned up:

(CLOS:ENSURE-CLASS 'CONTENTS-AS-HASHTABLE-MIXIN
                    :DIRECT-SUPERCLASSES '(USES-CONTENTS-MIXIN
                                            
KEY-VALUE-ITERATABLE-CONTAINER-MIXIN
                                           FINDABLE-CONTAINER-MIXIN)
                    :DIRECT-SLOTS '((:NAME CONTENTS
                                     :INITFORM  
CLOS::+INITFORM-UNSUPPLIED+
                                     :INITFUNCTION NIL
                                     :INITARGS NIL
                                     :READERS (CONTENTS)
                                     :WRITERS ((SETF CONTENTS))
                                     :ALLOCATION :INSTANCE
                                     :DOCUMENTATION NIL)))

Nothing there that jumps out at me, but others might know better. If I  
evaluate that form in a fresh REPL, it works fine:

CL-USER> (CLOS:ENSURE-CLASS 'CONTENTS-AS-HASHTABLE-MIXIN ...)
;;; Warning: Class USES-CONTENTS-MIXIN has been forward referenced.
;;; Warning: Class KEY-VALUE-ITERATABLE-CONTAINER-MIXIN has been  
forward referenced.
;;; Warning: Class FINDABLE-CONTAINER-MIXIN has been forward referenced.
#<The STANDARD-CLASS CONTENTS-AS-HASHTABLE-MIXIN>
CL-USER>

Well, that's what I could find out. Anyone have any ideas?

> On May 31, 2006, at 12:23 AM, Greg Pfeil wrote:
>
>> On May 25, 2006, at 6:42 AM, Gary King wrote:
>>
>>>> ;;; Compiling  
>>>> /Users/gwking/.asdf-install-dir/site/closer-mop/ecl/closer-mop- 
>>>> packages.lisp.Cannot find symbol "COMPUTE-DISCRIMINATING-FUNCTION"  
>>>> in package #<"CLOS" package>
>>>> Broken at EVAL.
>>>> CLOSER-MOP>>
>>>
>>> I'm not sure how to proceed from here. Also, does apropos not work  
>>> in ECL? I tried things like (apropos "bind") and got no results.
>>
>> Ok, I have the newest darcs on the whole stack up to CL-Containers on  
>> my Intel MacBook, and with my standard-accessor-method patch, I see:
>>
>> There is no method on the generic function  
>> METABANG.CL-CONTAINERS:CONTENTS that agrees on qualifiers NIL and  
>> specializers (#<The STANDARD-CLASS CONTENTS-AS-HASHTABLE-MIXIN>)
>>    [Condition of type SIMPLE-ERROR]
>>
>> Which is the same error I was seeing on my Linux box, so we have  
>> parity of a sort. Unfortunately, I haven't gotten a chance to sit  
>> down at my PPC Mac in a while, so I still don't know what's going on  
>> there. But now I know I see the issue across various x86 systems.  
>> Also, SBCL has no problem with any of this.
>
>
> -- 
> Gary Warren King
> metabang.com
> http://www.metabang.com/
> (413) 210 7511
> gwking on #lisp (occasionally)
>
>