On Dec 2, 2012, at 22:54, Pascal Costanza pc@p-cos.net wrote:

Hi,

There is a problem that a defmethod may not call add-method as it should. Here is a transcript:

CL-USER(1): (use-package :mop) T CL-USER(2): (defclass my-generic-function (standard-generic-function) () (:metaclass funcallable-standard-class)) #<FUNCALLABLE-STANDARD-CLASS MY-GENERIC-FUNCTION {3606AFA2}> CL-USER(3): (defgeneric f (x) (:generic-function-class my-generic-function)) #<MY-GENERIC-FUNCTION F {589D4D84}> CL-USER(4): (defmethod add-method :after ((gf my-generic-function) (m standard-method)) (print :foo)) #<STANDARD-METHOD ADD-METHOD :AFTER (MY-GENERIC-FUNCTION STANDARD-METHOD) {3F4C428F}> CL-USER(5): (defmethod f ((x integer)) (+ x x)) #<STANDARD-METHOD F (INTEGER) {27A5DAC0}> CL-USER(6): (add-method #'f *)

:FOO #<MY-GENERIC-FUNCTION F {589D4D84}> CL-USER(7): (f 5) 10

…or maybe just :after methods on add-method are not called…

Thanks, logged at http://trac.common-lisp.net/armedbear/ticket/276

Rudi