X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=tests%2Fprint.impure.lisp;h=608ce7fc36edb9cb04a985f8ac1e0a7d1eddfbaf;hb=9fb8bf2eb2c91cbda313edaa3362ff8b221ab81d;hp=6d8072f0d91539a34a5f4fd89bdb11c36e4e974a;hpb=e15ca902a6c4eb6e4695e71400edbbd57c5e57cd;p=sbcl.git

diff --git a/tests/print.impure.lisp b/tests/print.impure.lisp
index 6d8072f..608ce7f 100644
--- a/tests/print.impure.lisp
+++ b/tests/print.impure.lisp
@@ -416,4 +416,15 @@
 ;;; This used to trigger an AVER instead.
 (assert (raises-error? (format t "~>") sb-format:format-error))
 
+;;; readably printing hash-tables, check for circularity
+(let ((x (cons 1 2))
+      (h (make-hash-table))
+      (*print-readably* t)
+      (*print-circle* t)
+      (*read-eval* t))
+  (setf (gethash x h) h)
+  (destructuring-bind (x2 . h2) (read-from-string (write-to-string (cons x h)))
+    (assert (equal x x2))
+    (assert (eq h2 (gethash x2 h2)))))
+
 ;;; success