[slime-devel] slime fancy inspector breaks with class-prototype & print-object

Tobias C. Rittweiler tcr at freebits.de
Mon Oct 19 10:02:10 UTC 2009

xristos <xristos at suspicious.org> writes:

> swank-fancy-inspector.lisp:459
> "Prototype: " ,(if (swank-mop:class-finalized-p class)
>                    `(:value ,(swank-mop:class-prototype class))
>                    '"#<N/A (class not finalized)>")
> class-prototype will fill prototype slot of class instance
> with a prototype instance. 
> This will raise unbound-slot conditions for classes that have
> print-object that accesses slots specialized on them, since
> the instance returned by class-prototype may or may not be
> initialized according to spec.
> Also see: http://paste.lisp.org/display/88827
> The same conditions are raised in ccl although ccl
> has the with-errorfree-printing macro that slime could use
> to deal with this.

I committed something on that line. Thank you for the report,


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