X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fdeftype.lisp;h=370852556b1ad7f65a10e9aa1bfa360d63a4f3ae;hb=3d544b84f2b7ecd617d220145a775079df6c7919;hp=5d204478c81519dfb7115db6ef17cde8ad5461ce;hpb=7499dd43744531513e5186d72f08efec7b8c5ff9;p=sbcl.git

diff --git a/src/compiler/deftype.lisp b/src/compiler/deftype.lisp
index 5d20447..3708525 100644
--- a/src/compiler/deftype.lisp
+++ b/src/compiler/deftype.lisp
@@ -19,11 +19,12 @@
 (defun %deftype (name)
   (setf (classoid-cell-pcl-class (find-classoid-cell name :create t)) nil))
 
-(def!macro sb!xc:deftype (name lambda-list &body body)
+(def!macro sb!xc:deftype (&whole form name lambda-list &body body)
   #!+sb-doc
   "Define a new type, with syntax like DEFMACRO."
   (unless (symbolp name)
-    (error "type name not a symbol: ~S" name))
+    (bad-type name 'symbol "Type name is not a symbol:~%  ~S"
+              form))
   (multiple-value-bind (expander-form doc source-location-form)
       (multiple-value-bind (forms decls doc) (parse-body body)
         ;; FIXME: We could use CONSTANTP here to deal with slightly more
@@ -31,7 +32,7 @@
         ;; is not availble early enough.
         (if (and (not lambda-list) (not decls) (not (cdr forms))
                  (or (member (car forms) '(t nil))
-                     (eq 'quote (caar forms))))
+                     (and (consp (car forms)) (eq 'quote (caar forms)))))
             (values `(constant-type-expander ,(car forms)) doc '(sb!c:source-location))
             (with-unique-names (whole)
               (multiple-value-bind (macro-body local-decs doc)