0.9.16.16:

[sbcl.git] / tests / clos.impure.lisp

diff --git a/tests/clos.impure.lisp b/tests/clos.impure.lisp
index f05a40e..e5cc140 100644 (file)
--- a/tests/clos.impure.lisp
+++ b/tests/clos.impure.lisp
@@ -1369,4 +1369,36 @@
 (assert (equal '(result) (test-mc27prime 3)))
 (assert (raises-error? (test-mc27 t))) ; still no-applicable-method
 \f
+;;; more invalid wrappers.  This time for a long-standing bug in the
+;;; compiler's expansion for TYPEP on various class-like things, with
+;;; user-visible consequences.
+(defclass obsolete-again () ())
+(defvar *obsolete-again* (make-instance 'obsolete-again))
+(defvar *obsolete-again-hash* (sxhash *obsolete-again*))
+(make-instances-obsolete (find-class 'obsolete-again))
+(assert (not (streamp *obsolete-again*)))
+(make-instances-obsolete (find-class 'obsolete-again))
+(assert (= (sxhash *obsolete-again*) *obsolete-again-hash*))
+(compile (defun is-a-structure-object-p (x) (typep x 'structure-object)))
+(make-instances-obsolete (find-class 'obsolete-again))
+(assert (not (is-a-structure-object-p *obsolete-again*)))
+\f
+;;; overeager optimization of slot-valuish things
+(defclass listoid ()
+  ((caroid :initarg :caroid)
+   (cdroid :initarg :cdroid :initform nil)))
+(defmethod lengthoid ((x listoid))
+  (let ((result 0))
+    (loop until (null x)
+          do (incf result) (setq x (slot-value x 'cdroid)))
+    result))
+(with-test (:name ((:setq :method-parameter) slot-value) :fails-on :sbcl)
+  (assert (= (lengthoid (make-instance 'listoid)) 1))
+  (error "the failure mode is an infinite loop")
+  (assert (= (lengthoid
+              (make-instance 'listoid :cdroid
+                             (make-instance 'listoid :cdroid
+                                            (make-instance 'listoid))))
+             3)))
+\f
 ;;;; success