X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Falien-type.lisp;h=86b7121c08c1bf28ff4f3c861d1ce2e869715f5a;hb=b63c81837c2eae7bcf3b09911f68ba62d102b63d;hp=40e3ea14fd4eab59e7691f6b12c82dcb81f195dd;hpb=77360ee4a1f94c41b807be7ad0e8687199fceef1;p=sbcl.git

diff --git a/src/code/alien-type.lisp b/src/code/alien-type.lisp
index 40e3ea1..86b7121 100644
--- a/src/code/alien-type.lisp
+++ b/src/code/alien-type.lisp
@@ -13,12 +13,15 @@
 
 (in-package "SB!KERNEL")
 
+(/show0 "code/alien-type.lisp 16")
+
 (!begin-collecting-cold-init-forms)
 
 (defstruct (alien-type-type
 	    (:include ctype
 		      (class-info (type-class-or-lose 'alien)))
-	    (:constructor %make-alien-type-type (alien-type)))
+	    (:constructor %make-alien-type-type (alien-type))
+	    (:copier nil))
   (alien-type nil :type alien-type))
 
 (!define-type-class alien)
@@ -35,11 +38,6 @@
 ;;; others (toplevel form time instead of cold load init time) because
 ;;; ALIEN-VALUE itself is a structure which isn't defined until fairly
 ;;; late.
-;;;
-;;; FIXME: I'm somewhat tempted to just punt ALIEN from the type system.
-;;; It's sufficiently unlike the others that it's a bit of a pain, and
-;;; it doesn't seem to be put to any good use either in type inference or
-;;; in type declarations.
 (!define-superclasses alien ((alien-value)) progn)
 
 (!define-type-method (alien :simple-=) (type1 type2)
@@ -62,8 +60,10 @@
   (if alien-type
       (let ((lisp-rep-type (compute-lisp-rep-type alien-type)))
 	(if lisp-rep-type
-	    (specifier-type lisp-rep-type)
+	    (single-value-specifier-type lisp-rep-type)
 	    (%make-alien-type-type alien-type)))
       *universal-type*))
 
 (!defun-from-collected-cold-init-forms !alien-type-cold-init)
+
+(/show0 "code/alien-type.lisp end of file")