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Date: Tue, 23 Sep 2003 13:07:11 -0600 (MDT)
From: "Gary Byers" <gb@clozure.com>
To: "=?ISO-8859-2?Q?Oliver_Markovi=E6?=" <entrox@entrox.org>
Subject: Re: [Openmcl-devel] Specializing on nil
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cc: "Sven Van Caekenberghe" <sven@beta9.be>, openmcl-devel@clozure.com
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On Sun, 21 Sep 2003, [ISO-8859-2] Oliver Markovi=E6 wrote:

>
> Sven Van Caekenberghe wrote:
>
> > > Error in process listener(1): value #<EQL-SPECIALIZER NIL #x53807DE>
> > is not of the expected type (SATISFIES CCL::CLASSP).
> > > While executing: CCL::INVALIDATE-INITARGS-VECTOR-FOR-GF
> > > Type :POP to abort.
> > Type :? for other options.
> > 1 > :b
> > (F0135B00) : 0 "CCL::INVALIDATE-INITARGS-VECTOR-FOR-GF" 72
> > (F0135B10) : 1 "CCL::%ADD-STANDARD-METHOD-TO-STANDARD-GF" 264
> > (F0135B20) : 2 "CCL::ENSURE-METHOD" 432
> > (F0135B30) : 3 "CCL::LOAD-FROM-STREAM" 216
> > (F0135B40) : 4 "CCL::%LOAD" 1300
> > (F0135B60) : 5 NIL NIL
> > (F0135B70) : 6 "LOAD" 640
> > ...
>
> Works for me in 0.14-030901
>

This sounds very similar to a bug that was supposed to have been fixed
some months ago: code that maintains cached information in a generic
function didn't expect to see real live EQL-SPECIALIZERs.  I thought
that I'd found and changed all instances of this sort of thing.

> Welcome to OpenMCL Version (Alpha: Darwin) 0.14-030901!
> ? (compile-file "asdf.lisp")
> #P"/Users/qgo/Coding/cvs/asdf/asdf.dfsl"
> NIL
> NIL
> ? (load "asdf.dfsl")
> #P"/Users/qgo/Coding/cvs/asdf/asdf.dfsl"
> ? asdf:*asdf-revision*
> (1 77)
>
>
> But curiously, it doesn't work without compiling first:
>
> ? (load "asdf.lisp")
>  > Error in process listener(1): Class named OPERATION not found.
>  > While executing: FIND-CLASS
>

This seems to be something different (perhaps one of the defining macros
should be more careful about an EVAL-WHEN in its expansion ?).  I'll try
to look into it when I get back from vacation later this week.

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