Index: /trunk/ccl/compiler/X86/x862.lisp
===================================================================
--- /trunk/ccl/compiler/X86/x862.lisp	(revision 5536)
+++ /trunk/ccl/compiler/X86/x862.lisp	(revision 5537)
@@ -7726,10 +7726,13 @@
          (atype (if (array-ctype-p ctype) ctype))
          (keyword (and atype
-                           (= 2 (length (array-ctype-dimensions atype)))
-                           (not (array-ctype-complexp atype))
-                           (funcall
-                            (arch::target-array-type-name-from-ctype-function
-                             (backend-target-arch *target-backend*))
-                            atype))))
+                       (let* ((dims (array-ctype-dimensions atype)))
+                         (and (typep dims 'list)
+                              
+                              (= 2 (length dims))))
+                       (not (array-ctype-complexp atype))
+                       (funcall
+                        (arch::target-array-type-name-from-ctype-function
+                         (backend-target-arch *target-backend*))
+                        atype))))
     (cond (keyword
            (let* ((dims (array-ctype-dimensions atype))
@@ -7815,10 +7818,12 @@
          (atype (if (array-ctype-p ctype) ctype))
          (keyword (and atype
-                           (= 2 (length (array-ctype-dimensions atype)))
-                           (not (array-ctype-complexp atype))
-                           (funcall
-                            (arch::target-array-type-name-from-ctype-function
-                             (backend-target-arch *target-backend*))
-                            atype))))
+                       (let* ((dims (array-ctype-dimensions atype)))
+                         (and (type dims 'list)
+                              (= 2 (length dims))))
+                       (not (array-ctype-complexp atype))
+                       (funcall
+                        (arch::target-array-type-name-from-ctype-function
+                         (backend-target-arch *target-backend*))
+                        atype))))
     (cond (keyword
            (let* ((dims (array-ctype-dimensions atype))
@@ -7885,5 +7890,5 @@
                                          new ($ x8664::arg_z))
            (x862-pop-register seg ($ x8664::temp1))
-           (x862-fixed-call-builtin seg vreg xfer nil (subprim-name->offset '.SParef3))))))
+           (x862-fixed-call-builtin seg vreg xfer nil (subprim-name->offset '.SPaset3))))))
 
 
@@ -7895,4 +7900,14 @@
          (dim1 (acode-fixnum-form-p dim1)))
     (x862-aset2 seg vreg xfer arr i j new safe type-keyword dim0 dim1)))
+
+
+(defx862 x862-%aset3 simple-typed-aset3 (seg vreg xfer typename arr i j k new &optional dim0 dim1 dim2)
+  (let* ((type-keyword (x862-immediate-operand typename))
+         (fixtype (nx-lookup-target-uvector-subtag type-keyword))
+         (safe (unless *x862-reckless* fixtype))
+         (dim0 (acode-fixnum-form-p dim0))
+         (dim1 (acode-fixnum-form-p dim1))
+         (dim2 (acode-fixnum-form-p dim2)))
+    (x862-aset3 seg vreg xfer arr i j k new safe type-keyword dim0 dim1 dim2)))
 
 (defx862 x862-%typed-uvref %typed-uvref (seg vreg xfer subtag uvector index)