X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fpcl%2Fdefcombin.lisp;h=f3296a9685e09507bf60df6c04a7a6f5a699e205;hb=8c12bc813114d4bbfa9c05e450e013167ad6cca3;hp=711696fbb27b9c6af1ac26aef368d4f6d2535c6d;hpb=444d2072bc52e60a41af62ee22e343e76109212f;p=sbcl.git

diff --git a/src/pcl/defcombin.lisp b/src/pcl/defcombin.lisp
index 711696f..f3296a9 100644
--- a/src/pcl/defcombin.lisp
+++ b/src/pcl/defcombin.lisp
@@ -324,7 +324,12 @@
     (method-group-specifiers declarations real-body)
   (let (names specializer-caches cond-clauses required-checks order-cleanups)
     (let ((nspecifiers (length method-group-specifiers)))
-      (dolist (method-group-specifier method-group-specifiers)
+      (dolist (method-group-specifier method-group-specifiers
+               (push `(t (return-from .long-method-combination-function.
+                           `(invalid-method-error , .method.
+                             "~@<is applicable, but does not belong ~
+                              to any method group~@:>")))
+                     cond-clauses))
         (multiple-value-bind (name tests description order required)
             (parse-method-group-specifier method-group-specifier)
           (declare (ignore description))