1.0.6.3: thread and interrupt safe CLOS cache

[sbcl.git] / src / code / array.lisp

diff --git a/src/code/array.lisp b/src/code/array.lisp
index f41730b..50f730a 100644 (file)
--- a/src/code/array.lisp
+++ b/src/code/array.lisp
@@ -56,6 +56,7 @@
         (values vector index))
       (values array index)))
 
+(declaim (inline simple-vector-compare-and-swap))
 (defun simple-vector-compare-and-swap (vector index old new)
   #!+(or x86 x86-64)
   (%simple-vector-compare-and-swap vector
@@ -349,11 +350,7 @@ of specialized arrays is supported."
                             (:little-endian
                              (- sb!vm:other-pointer-lowtag))
                             (:big-endian
-                             ;; I'm not completely sure of what this
-                             ;; 3 represents symbolically. It's
-                             ;; just what all the LOAD-TYPE vops
-                             ;; are doing.
-                             (- 3 sb!vm:other-pointer-lowtag)))))
+                             (- (1- sb!vm:n-word-bytes) sb!vm:other-pointer-lowtag)))))
                    ;; WIDETAG-OF needs extra code to handle
                    ;; LIST and FUNCTION lowtags. We're only
                    ;; dispatching on other pointers, so let's