;;;; This file is for testing debugging functionality, using
-;;;; test machinery which might have side-effects (e.g.
+;;;; test machinery which might have side effects (e.g.
;;;; executing DEFUN).
;;;; This software is part of the SBCL system. See the README file for
(declare (type function fun))
;; The Lisp-level type FUNCTION can conceal a multitude of sins..
(case (sb-kernel:widetag-of fun)
- ((#.sb-vm:simple-fun-header-widetag #.sb-vm:closure-fun-header-widetag)
+ (#.sb-vm:simple-fun-header-widetag
(sb-kernel:%simple-fun-arglist fun))
(#.sb-vm:closure-header-widetag (get-arglist
(sb-kernel:%closure-fun fun)))
(assert (eql &rest-sym '&rest))
(assert (symbolp format-args-sym)))
+;;; Check for backtraces generally being correct. Ensure that the
+;;; actual backtrace finishes (doesn't signal any errors on its own),
+;;; and that it contains the frames we expect, doesn't contain any
+;;; "bogus stack frame"s, and contains the appropriate toplevel call
+;;; and hasn't been cut off anywhere.
+(defun verify-backtrace (test-function frame-name
+ &key (key #'first) (test #'eql)
+ (allow-bogus-frames nil))
+ (let ((result nil)
+ (return-value nil))
+ (block outer-handler
+ (handler-bind
+ ((error #'(lambda (condition)
+ (let ((backtrace (ignore-errors
+ (sb-debug:backtrace-as-list))))
+ ;; Make sure we find what we're looking for.
+ (if (member frame-name backtrace :key key :test test)
+ (setf result (list :error condition))
+ (print (list :failed :frame frame-name :backtrace backtrace)))
+ ;; Make sure there's no bogus stack frames
+ ;; unless they're explicitly allowed.
+ (when (and (not allow-bogus-frames)
+ (member "bogus stack frame" backtrace
+ :key #'first :test #'equal))
+ (print 'verify-backtrace-bogus)
+ (setf result nil))
+ ;; Make sure the backtrace isn't stunted in
+ ;; any way. (Depends on running in the main
+ ;; thread.)
+ (unless (member 'sb-impl::toplevel-init backtrace
+ :key #'first :test #'equal)
+ (print 'verify-backtrace-stunted)
+ (setf result nil)))
+ (return-from outer-handler))))
+ (funcall test-function)))
+ (values result return-value)))
+
+;;; Test for "undefined function" (undefined_tramp) working properly.
+;;; Try it with and without tail call elimination, since they can have
+;;; different effects. (Specifically, if undefined_tramp is incorrect
+;;; a stunted stack can result from the tail call variant.)
+#-(or alpha) ; bug 346
+(flet ((optimized ()
+ (declare (optimize (speed 2) (debug 1))) ; tail call elimination
+ (#:undefined-function 42))
+ (not-optimized ()
+ (declare (optimize (speed 1) (debug 2))) ; no tail call elimination
+ (#:undefined-function 42))
+ (test (fun)
+ (declare (optimize (speed 1) (debug 2))) ; no tail call elimination
+ (funcall fun)))
+ #-x86 ; <- known bug (?): fails for me on 0.8.17.31/Linux/x86 -- WHN 2004-12-27
+ (dolist (frame '(#-(or x86 x86-64) "undefined function" ; bug 353
+ "FLET COMMON-LISP-USER::TEST"))
+ (assert (verify-backtrace (lambda () (test #'optimized)) frame
+ :test #'equal
+ :allow-bogus-frames (or #+(or x86 x86-64) t))))
+ (dolist (frame '(#-(or x86 x86-64) "undefined function" ; bug 353
+ "FLET COMMON-LISP-USER::NOT-OPTIMIZED"
+ "FLET COMMON-LISP-USER::TEST"))
+ (assert (verify-backtrace (lambda () (test #'not-optimized)) frame
+ :test #'equal
+ :allow-bogus-frames (or #+(or x86 x86-64) t)))))
+
+;;; Division by zero was a common error on PPC. It depended on the
+;;; return function either being before INTEGER-/-INTEGER in memory,
+;;; or more than MOST-POSITIVE-FIXNUM bytes ahead. It also depends on
+;;; INTEGER-/-INTEGER calling SIGNED-TRUNCATE. I believe Raymond Toy
+;;; says that the Sparc backend (at least for CMUCL) inlines this, so
+;;; if SBCL does the same this test is probably not good for the
+;;; Sparc.
+;;;
+;;; Disabling tail call elimination on this will probably ensure that
+;;; the return value (to the flet or the enclosing top level form) is
+;;; more than MOST-POSITIVE-FIXNUM with the current spaces on OS X.
+;;; Enabling it might catch other problems, so do it anyway.
+#-alpha ; bug 346
+(progn
+ (flet ((test-function ()
+ (declare (optimize (speed 2) (debug 1))) ; tail call elimination
+ (/ 42 0)))
+ (assert (verify-backtrace #'test-function '/)))
+
+ (flet ((test-function ()
+ (declare (optimize (speed 1) (debug 2))) ; no tail call elimination
+ (/ 42 0)))
+ (assert (verify-backtrace #'test-function '/))))
+
+#-(or alpha) ; bug 61
+(progn
+ (defun throw-test ()
+ (throw 'no-such-tag t))
+ (assert (verify-backtrace #'throw-test
+ #-(or x86 x86-64 sparc) 'throw-test
+ #+(or x86 x86-64 sparc) "XEP for COMMON-LISP-USER::THROW-TEST" ; bug 354
+ :test #'equal)))
+
;;; success
(quit :unix-status 104)