use *SUPPRESS-PRINT-ERRORS* for backtraces and DESCRIBE

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

diff --git a/tests/interface.impure.lisp b/tests/interface.impure.lisp
index ac4776a..613bc66 100644 (file)
--- a/tests/interface.impure.lisp
+++ b/tests/interface.impure.lisp
@@ -264,5 +264,33 @@
   (assert (equal "foo" (documentation 'bug-643958-test 'function)))
   (setf (documentation 'bug-643958-test 'function) "bar")
   (assert (equal "bar" (documentation 'bug-643958-test 'function))))
+
+(defclass cannot-print-this ()
+  ())
+(defmethod print-object ((oops cannot-print-this) stream)
+  (error "No go!"))
+(with-test (:name :describe-suppresses-print-errors)
+  (handler-bind ((error #'continue))
+    (with-output-to-string (s)
+      (describe (make-instance 'cannot-print-this) s))))
+(with-test (:name :backtrace-suppresses-print-errors)
+  (handler-bind ((error #'continue))
+    (with-output-to-string (s)
+      (labels ((foo (n x)
+                 (when (plusp n)
+                   (foo (1- n) x))
+                 (when (zerop n)
+                   (sb-debug:backtrace 100 s))))
+        (foo 100 (make-instance 'cannot-print-this))))))
+(with-test (:name :backtrace-and-circles)
+  (handler-bind ((error #'continue))
+    (with-output-to-string (s)
+      (labels ((foo (n x)
+                 (when (plusp n)
+                   (foo (1- n) x))
+                 (when (zerop n)
+                   (sb-debug:backtrace 100 s))))
+        (foo 100 (let ((list (list t)))
+                   (nconc list list)))))))
 \f
 ;;;; success