0.8.7.40:

[sbcl.git] / src / pcl / vector.lisp

diff --git a/src/pcl/vector.lisp b/src/pcl/vector.lisp
index e6bfa4b..02bbe28 100644 (file)
--- a/src/pcl/vector.lisp
+++ b/src/pcl/vector.lisp
@@ -665,8 +665,21 @@
        `(locally (declare #.*optimize-speed*)
          (let ((,index (pvref ,pv ,pv-offset)))
            (setq ,value (typecase ,index
+                          ;; FIXME: the line marked by KLUDGE below
+                          ;; (and the analogous spot in
+                          ;; INSTANCE-WRITE-INTERNAL) is there purely
+                          ;; to suppress a type mismatch warning that
+                          ;; propagates through to user code.
+                          ;; Presumably SLOTS at this point can never
+                          ;; actually be NIL, but the compiler seems
+                          ;; to think it could, so we put this here
+                          ;; to shut it up.  (see also mail Rudi
+                          ;; Schlatte sbcl-devel 2003-09-21) -- CSR,
+                          ;; 2003-11-30
                           ,@(when (or (null type) (eq type :instance))
-                              `((fixnum (clos-slots-ref ,slots ,index))))
+                              `((fixnum
+                                 (and ,slots ; KLUDGE
+                                  (clos-slots-ref ,slots ,index)))))
                           ,@(when (or (null type) (eq type :class))
                               `((cons (cdr ,index))))
                           (t +slot-unbound+)))
@@ -700,8 +713,9 @@
          (let ((,index (pvref ,pv ,pv-offset)))
            (typecase ,index
              ,@(when (or (null type) (eq type :instance))
-                      `((fixnum (setf (clos-slots-ref ,slots ,index)
-                                     ,new-value))))
+                  `((fixnum (and ,slots
+                            (setf (clos-slots-ref ,slots ,index)
+                                  ,new-value)))))
              ,@(when (or (null type) (eq type :class))
                  `((cons (setf (cdr ,index) ,new-value))))
              (t ,default)))))))