0.8.7.4:

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

diff --git a/src/code/class.lisp b/src/code/class.lisp
index fd432d4..392ccfa 100644 (file)
--- a/src/code/class.lisp
+++ b/src/code/class.lisp
@@ -871,6 +871,9 @@
       (values nil nil)
       (invoke-complex-subtypep-arg1-method type1 class2 nil t)))
 
+(!define-type-method (classoid :negate) (type)
+  (make-negation-type :type type))
+
 (!define-type-method (classoid :unparse) (type)
   (classoid-proper-name type))
 \f