X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fpcl%2Flow.lisp;h=0d06027aba7c5b1cb1d3e7fd07a9768ffccb0a2b;hb=54da325f13fb41669869aea688ae195426c0e231;hp=4fa6a093ec69f3eef83a294b228c46c6199bb7fe;hpb=03090fcd920d559cfe9c35f20c4038a8c74d0e5b;p=sbcl.git

diff --git a/src/pcl/low.lisp b/src/pcl/low.lisp
index 4fa6a09..0d06027 100644
--- a/src/pcl/low.lisp
+++ b/src/pcl/low.lisp
@@ -117,8 +117,14 @@
 (import 'sb-kernel:funcallable-instance-p)
 
 (defun set-funcallable-instance-function (fin new-value)
-  (declare (type function new-value))
-  (aver (funcallable-instance-p fin))
+  (declare (type function new-value)
+           ;; KLUDGE: it might be nice to restrict
+           ;; SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION to operate only
+           ;; on generalized instances of
+           ;; SB-MOP:FUNCALLABLE-STANDARD-OBJECT; at present, even
+           ;; PCL's internal use of SET-FUNCALLABLE-INSTANCE-FUNCTION
+           ;; doesn't obey this restriction.
+           (type funcallable-instance fin))
   (setf (funcallable-instance-fun fin) new-value))
 
 ;;; FIXME: these macros should just go away.  It's not clear whether
@@ -176,7 +182,7 @@
 ;;; otherwise dealing with STANDARD-INSTANCE-ACCESS becomes harder
 ;;; -- and slower -- than it needs to be.
 (defconstant +slot-unbound+ '..slot-unbound..
-  "SBCL specific extentions to MOP: if this value is read from an
+  "SBCL specific extensions to MOP: if this value is read from an
 instance using STANDARD-INSTANCE-ACCESS, the slot is unbound.
 Similarly, an :INSTANCE allocated slot can be made unbound by
 assigning this to it using (SETF STANDARD-INSTANCE-ACCESS).