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Re: [Gcl-devel] Clarification re define-method-combination test

From: Paul F. Dietz
Subject: Re: [Gcl-devel] Clarification re define-method-combination test
Date: Tue, 23 Nov 2004 09:01:30 -0600
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.2) Gecko/20040803

Camm Maguire wrote:
Greetings!  Paul, could you please clarify the test below?  clisp and
cmucl both fail as well as gcl.

                   ((CL-TEST::X T) (CL-TEST::Y T)) :FOO))
            (CL-TEST::DMC-LONG-GF-01 'CL-TEST::A 'CL-TEST::B)
            (ERROR NIL :CAUGHT)))

The comment with the test says:

;;; The list of method groups specifiers for this method combination
;;; is empty, so no methods are valid.

Lispworks passes this test, acl 6.2, sbcl and clisp don't.
clisp is reporting an error at method definition time, but
the error is supposed to be signalled when there an applicable
method has no valid method combination, and the notion of
'applicable' method is defined only in the context of
a particular call to the generic function.


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