[armedbear-devel] [closer-devel] Closer-mop support for ABCL

Rudolf Schlatte rudi at constantly.at
Sat Aug 25 21:21:37 UTC 2012

On Aug 19, 2012, at 17:49, Pascal Costanza <pc at p-cos.net> wrote:

> Hi Rudi,
> I'm currently looking into adding support for ABCL 1.1 to the Closer project. I'm not only adding the support for Closer to MOP itself, but I'm also testing whether the other packages work (like ContextL, etc.).
> I found a bug with regard to the slot layout of metaobject classes. It seems that fixed slot positions are assumed where this shouldn't be the case. Here is a transcript that illustrates the problem:

Hi Pascal,

Thanks for the report and diagnosis!  This (and a related bug reported by Stas Boukarev) are hopefully fixed in svn.

Slot objects are allocated deep in Java-land (see SlotDefinition.java resp. clos.lisp:make-(direct|effective)-slot-definition for boring details) and the accessors defined in the SlotDefinition class used to believe they know everything about the layout of slot objects.  r14134 adds code paths for normal standard-object slot definitions.

Thanks again,


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