tests/debug.impure.lisp

   1 ;;;; This file is for testing debugging functionality, using
   2 ;;;; test machinery which might have side effects (e.g.
   3 ;;;; executing DEFUN).
   4
   5 ;;;; This software is part of the SBCL system. See the README file for
   6 ;;;; more information.
   7 ;;;;
   8 ;;;; While most of SBCL is derived from the CMU CL system, the test
   9 ;;;; files (like this one) were written from scratch after the fork
  10 ;;;; from CMU CL.
  11 ;;;;
  12 ;;;; This software is in the public domain and is provided with
  13 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  14 ;;;; more information.
  15
  16 (cl:in-package :cl-user)
  17
  18 ;;; The debugger doesn't have any native knowledge of the interpreter
  19 (when (eq sb-ext:*evaluator-mode* :interpret)
  20   (sb-ext:exit :code 104))
  21
  22 \f
  23 ;;;; Check that we get debug arglists right.
  24
  25 ;;; FIXME: This should use some get-argslist like functionality that
  26 ;;; we actually export.
  27 ;;;
  28 ;;; Return the debug arglist of the function object FUN as a list, or
  29 ;;; punt with :UNKNOWN.
  30 (defun get-arglist (fun)
  31   (declare (type function fun))
  32   ;; The Lisp-level type FUNCTION can conceal a multitude of sins..
  33   (case (sb-kernel:widetag-of fun)
  34     (#.sb-vm:simple-fun-header-widetag
  35       (sb-kernel:%simple-fun-arglist fun))
  36     (#.sb-vm:closure-header-widetag
  37      (get-arglist (sb-kernel:%closure-fun fun)))
  38     ;; In code/describe.lisp, ll. 227 (%describe-fun), we use a scheme
  39     ;; like above, and it seems to work. -- MNA 2001-06-12
  40     ;;
  41     ;; (There might be other cases with arglist info also.
  42     ;; SIMPLE-FUN-HEADER-WIDETAG and CLOSURE-HEADER-WIDETAG just
  43     ;; happen to be the two case that I had my nose rubbed in when
  44     ;; debugging a GC problem caused by applying %SIMPLE-FUN-ARGLIST to
  45     ;; a closure. -- WHN 2001-06-05)
  46     (t
  47      #+sb-eval
  48      (if (typep fun 'sb-eval::interpreted-function)
  49          (sb-eval::interpreted-function-lambda-list fun)
  50          :unknown)
  51      #-sb-eval
  52      :unknown)))
  53
  54 (defun zoop (zeep &key beep)
  55   blurp)
  56 (assert (equal (get-arglist #'zoop) '(zeep &key beep)))
  57
  58 ;;; Check some predefined functions too.
  59 ;;;
  60 ;;; (We don't know exactly what the arguments are, e.g. the first
  61 ;;; argument of PRINT might be SB-IMPL::OBJECT or SB-KERNEL::OBJ or
  62 ;;; whatever. But we do know the general structure that a correct
  63 ;;; answer should have, so we can safely do a lot of checks.)
  64 (with-test (:name :predefined-functions-1)
  65   (destructuring-bind (object-sym &optional-sym stream-sym) (get-arglist #'print)
  66     (assert (symbolp object-sym))
  67     (assert (eql &optional-sym '&optional))
  68     (assert (symbolp stream-sym))))
  69
  70 (with-test (:name :predefined-functions-2)
  71   (destructuring-bind (dest-sym control-sym &rest-sym format-args-sym)
  72       (get-arglist #'format)
  73     (assert (symbolp dest-sym))
  74     (assert (symbolp control-sym))
  75     (assert (eql &rest-sym '&rest))
  76     (assert (symbolp format-args-sym))))
  77
  78 ;;;; test TRACE
  79
  80 (defmacro with-traced-function ((name &rest options) &body body)
  81   `(with-output-to-string (*trace-output*)
  82      (unwind-protect
  83           (progn
  84             (trace ,name ,@options)
  85             ,@body)
  86        (ignore-errors (untrace ,name)))))
  87
  88 (defun trace-this ()
  89   'ok)
  90
  91 (defun trace-fact (n)
  92   (if (zerop n)
  93       1
  94       (* n (trace-fact (1- n)))))
  95
  96 (with-test (:name (trace :simple))
  97   (let ((output (with-traced-function (trace-this)
  98                   (assert (eq 'ok (trace-this))))))
  99     (assert (search "TRACE-THIS" output))
 100     (assert (search "returned OK" output))))
 101
 102 ;;; bug 379
 103 ;;; This is not a WITH-TEST :FAILS-ON PPC DARWIN since there are
 104 ;;; suspicions that the breakpoint trace might corrupt the whole image
 105 ;;; on that platform.
 106 (with-test (:name (trace :encapsulate nil)
 107             :fails-on '(or (and :ppc (not :linux)) :sparc :arm64)
 108             :broken-on '(or :darwin :sunos :hppa))
 109   (let ((output (with-traced-function (trace-this :encapsulate nil)
 110                   (assert (eq 'ok (trace-this))))))
 111     (assert (search "TRACE-THIS" output))
 112     (assert (search "returned OK" output))))
 113
 114 (with-test (:name (:trace :encapsulate nil :recursive)
 115             :fails-on '(or (and :ppc (not :linux)) :sparc :sunos :arm64)
 116             :broken-on '(or :darwin (and :x86 :sunos) :hppa))
 117   (let ((output (with-traced-function (trace-fact :encapsulate nil)
 118                   (assert (= 120 (trace-fact 5))))))
 119     (assert (search "TRACE-FACT" output))
 120     (assert (search "returned 1" output))
 121     (assert (search "returned 120" output))))
 122
 123 (defun trace-and-fmakunbound-this (x)
 124   x)
 125
 126 (with-test (:name (trace fmakunbound :bug-667657))
 127   (trace trace-and-fmakunbound-this)
 128   (fmakunbound 'trace-and-fmakunbound-this)
 129   (untrace)
 130   (assert (not (trace))))
 131
 132 (with-test (:name (trace :report nil :smoke))
 133   (let ((output (with-traced-function (trace-this :report nil)
 134                   (assert (eq 'ok (trace-this))))))
 135     (assert (sequence:emptyp output))))
 136
 137 (with-test (:name (trace :report nil :print))
 138   (let ((output (with-traced-function
 139                     (trace-fact :report nil :print (sb-debug:arg 0))
 140                   (assert (eq '2 (trace-fact 2))))))
 141     (assert (string= output (format nil "2~@
 142                                          1~@
 143                                          0~%")))))
 144
 145 (with-test (:name :bug-414)
 146   (handler-bind ((warning #'error))
 147     (load (compile-file "bug-414.lisp"))
 148     (disassemble 'bug-414)))
 149
 150 ;; A known function can be stored as a code constant in lieu of the
 151 ;; usual mode of storing an #<fdefn> and looking up the function from it.
 152 ;; One such usage occurs with TAIL-CALL-VARIABLE (e.g. via APPLY).
 153 ;; Show that declaring the function locally notinline uses the #<fdefn>
 154 ;; by first compiling a call that would have elided the #<fdefn>
 155 ;; and then TRACE.
 156 (defun test-compile-then-load (filename junk)
 157   (declare (notinline compile-file load))
 158   (apply 'load (apply 'compile-file filename junk) junk))
 159 (compile 'test-compile-then-load)
 160 (with-test (:name :traceable-known-fun)
 161   (let ((s (make-string-output-stream)))
 162     (trace compile-file load)
 163     (let ((*trace-output* s))
 164       (test-compile-then-load "bug-414.lisp" nil))
 165     (untrace)
 166     (assert (>= (count #\Newline (get-output-stream-string s)) 4))))
 167
 168 (with-test (:name :bug-310175 :fails-on '(not :stack-allocatable-lists))
 169   ;; KLUDGE: Not all DX-enabled platforms DX CONS, and the compiler
 170   ;; transforms two-arg-LIST* (and one-arg-LIST) to CONS.  Therefore,
 171   ;; use two-arg-LIST, which should get through to VOP LIST, and thus
 172   ;; stack-allocate on a predictable set of machines.
 173   (let ((dx-arg (list t t)))
 174     (declare (dynamic-extent dx-arg))
 175     (flet ((dx-arg-backtrace (x)
 176              (declare (optimize (debug 2)))
 177              (prog1 (sb-debug:list-backtrace :count 10)
 178                (assert (sb-debug::stack-allocated-p x)))))
 179       (declare (notinline dx-arg-backtrace))
 180       (assert (member-if (lambda (frame)
 181                            (and (consp frame)
 182                                 (consp (car frame))
 183                                 (equal '(flet dx-arg-backtrace :in) (butlast (car frame)))
 184                                 (notany #'sb-debug::stack-allocated-p (cdr frame))))
 185                          (dx-arg-backtrace dx-arg))))))
 186
 187 (with-test (:name :bug-795245)
 188   (assert
 189    (eq :ok
 190        (catch 'done
 191          (handler-bind
 192              ((error (lambda (e)
 193                        (declare (ignore e))
 194                        (handler-case
 195                            (sb-debug:print-backtrace :count 100
 196                                                      :stream (make-broadcast-stream))
 197                          (error ()
 198                            (throw 'done :error))
 199                          (:no-error ()
 200                            (throw 'done :ok))))))
 201            (apply '/= nil 1 2 nil))))))
 202
 203 ;;;; test infinite error protection
 204
 205 (defmacro nest-errors (n-levels error-form)
 206   (if (< 0 n-levels)
 207       `(handler-bind ((error (lambda (condition)
 208                                (declare (ignore condition))
 209                                ,error-form)))
 210         (nest-errors ,(1- n-levels) ,error-form))
 211       error-form))
 212
 213 (defun erroring-debugger-hook (condition old-debugger-hook)
 214   (let ((*debugger-hook* old-debugger-hook))
 215     (format t "recursive condition: ~A~%" condition) (force-output)
 216     (error "recursive condition: ~A" condition)))
 217
 218 (defun test-infinite-error-protection ()
 219   ;; after 50 successful throws to SB-IMPL::TOPLEVEL-CATCHER sbcl used
 220   ;; to halt, it produces so much garbage that's hard to suppress that
 221   ;; it is tested only once
 222   (write-line "--HARMLESS BUT ALARMING BACKTRACE COMING UP--")
 223   (let ((*debugger-hook* #'erroring-debugger-hook))
 224     (loop repeat 1 do
 225           (let ((error-counter 0)
 226                 (*terminal-io* (make-broadcast-stream)))
 227             (assert
 228              (not (eq
 229                    :normal-exit
 230                    (catch 'sb-impl::toplevel-catcher
 231                      (nest-errors 20 (error "infinite error ~s"
 232                                             (incf error-counter)))
 233                      :normal-exit)))))))
 234   (write-line "--END OF H-B-A-B--"))
 235
 236 (with-test (:name :infinite-error-protection)
 237   (enable-debugger)
 238   (test-infinite-error-protection))
 239
 240 (with-test (:name (:infinite-error-protection :thread)
 241                   :skipped-on '(not :sb-thread))
 242   (enable-debugger)
 243   (let ((thread (sb-thread:make-thread #'test-infinite-error-protection)))
 244     (loop while (sb-thread:thread-alive-p thread))))
 245
 246 ;; unconditional, in case either previous left it enabled
 247 (disable-debugger)
 248 \f
 249 ;;;; test some limitations of MAKE-LISP-OBJ
 250
 251 ;;; Older GENCGC systems had a bug in the pointer validation used by
 252 ;;; MAKE-LISP-OBJ that made SIMPLE-FUN objects always fail to
 253 ;;; validate.
 254 (with-test (:name (:make-lisp-obj :simple-funs))
 255   (sb-sys:without-gcing
 256     (assert (eq #'identity
 257                 (sb-kernel:make-lisp-obj
 258                  (sb-kernel:get-lisp-obj-address
 259                   #'identity))))))
 260
 261 ;;; Older CHENEYGC systems didn't perform any real pointer validity
 262 ;;; checks beyond "is this pointer to somewhere in heap space".
 263 (with-test (:name (:make-lisp-obj :pointer-validation))
 264   ;; Fun and games: We need to test MAKE-LISP-OBJ with a known-bogus
 265   ;; address, but we also need the GC to not pitch a fit if it sees an
 266   ;; object with said bogus address.  Thus, construct our known-bogus
 267   ;; object within an area of unboxed storage (a vector) in static
 268   ;; space.  We'll make it a simple object, (CONS 0 0), which has an
 269   ;; in-memory representation of two consecutive zero words.  We
 270   ;; allocate a three-word vector so that we can guarantee a
 271   ;; double-word aligned double-word of zeros no matter what happens
 272   ;; with the vector-data-offset (currently double-word aligned).
 273   (let* ((memory (sb-int:make-static-vector 3 :element-type `(unsigned-byte ,sb-vm:n-word-bits)
 274                                             :initial-element 0))
 275          (vector-data-address (sb-sys:sap-int (sb-kernel::vector-sap memory)))
 276          (object-base-address (logandc2 (+ vector-data-address sb-vm:lowtag-mask) sb-vm:lowtag-mask))
 277          (object-tagged-address (+ object-base-address sb-vm:list-pointer-lowtag)))
 278     (multiple-value-bind (object valid-p)
 279         (sb-kernel:make-lisp-obj object-tagged-address nil)
 280       (declare (ignore object))
 281       (assert (not valid-p)))))
 282
 283 (defun test-debugger (control form &rest targets)
 284   (let ((out (make-string-output-stream))
 285         (oops t))
 286     (unwind-protect
 287          (progn
 288            (with-simple-restart (debugger-test-done! "Debugger Test Done!")
 289              (let* ((*debug-io* (make-two-way-stream
 290                                  (make-string-input-stream control)
 291                                  (make-broadcast-stream out #+nil *standard-output*)))
 292                     ;; Initial announcement goes to *ERROR-OUTPUT*
 293                     (*error-output* *debug-io*)
 294                     (*invoke-debugger-hook* nil))
 295                (handler-bind ((error #'invoke-debugger))
 296                  (eval form))))
 297            (setf oops nil))
 298       (when oops
 299         (error "Uncontrolled unwind from debugger test.")))
 300     ;; For sanity's sake this is outside the *debug-io* rebinding -- otherwise
 301     ;; it could swallow our asserts!
 302     (with-input-from-string (s (get-output-stream-string out))
 303       (loop for line = (read-line s nil)
 304             while line
 305             do (assert targets)
 306                #+nil
 307                (format *error-output* "Got: ~A~%" line)
 308                (let ((match (pop targets)))
 309                  (if (eq '* match)
 310                      ;; Whatever, till the next line matches.
 311                      (let ((text (pop targets)))
 312                        #+nil
 313                        (format *error-output* "Looking for: ~A~%" text)
 314                        (unless (search text line)
 315                          (push text targets)
 316                          (push match targets)))
 317                      (unless (search match line)
 318                        (format *error-output* "~&Wanted: ~S~%   Got: ~S~%" match line)
 319                        (setf oops t))))))
 320     ;; Check that we saw everything we wanted
 321     (when targets
 322       (error "Missed: ~S" targets))
 323     (assert (not oops))))
 324
 325 (with-test (:name (:debugger :source 1))
 326   (test-debugger
 327    "d
 328     source 0
 329     debugger-test-done!"
 330    `(progn
 331       (defun this-will-break (x)
 332                (declare (optimize debug))
 333                (let* ((y (- x x))
 334                       (z (/ x y)))
 335                  (+ x z)))
 336       (this-will-break 1))
 337    '*
 338    "debugger invoked"
 339    '*
 340    "DIVISION-BY-ZERO"
 341    "operands (1 0)"
 342    '*
 343    "INTEGER-/-INTEGER"
 344    "(THIS-WILL-BREAK 1)"
 345    "1]"
 346    "(/ X Y)"
 347    "1]"))
 348
 349 (with-test (:name (:debugger :source 2))
 350   (test-debugger
 351    "d
 352     source 0
 353     debugger-test-done!"
 354    `(locally (declare (optimize (speed 0) (safety 3) (debug 3)))
 355       (let ((f #'(lambda (x cont)
 356                    (print x (make-broadcast-stream))
 357                    (if (zerop x)
 358                        (error "~%foo")
 359                        (funcall cont (1- x) cont)))))
 360         (funcall f 10 f)))
 361    '*
 362    "debugger"
 363    '*
 364    "foo"
 365    '*
 366    "source: (ERROR \"~%foo\")"
 367    '*
 368    "(LAMBDA (X CONT)"
 369    '*
 370    "(FUNCALL CONT (1- X) CONT)"
 371    "1]"))
 372
 373 (with-test (:name (disassemble :high-debug-eval))
 374   (eval `(defun this-will-be-disassembled (x)
 375            (declare (optimize debug))
 376            (+ x x)))
 377   (let* ((oopses (make-string-output-stream))
 378          (disassembly
 379            (let ((*error-output* oopses))
 380              (with-output-to-string (*standard-output*)
 381                (disassemble 'this-will-be-disassembled)))))
 382     (with-input-from-string (s disassembly)
 383       (assert (search "; disassembly for THIS-WILL-BE-DISASSEMBLED"
 384                       (read-line s))))
 385     (let ((problems (get-output-stream-string oopses)))
 386       (unless (zerop (length problems))
 387         (error problems)))))
 388
 389 (defun this-too-will-be-disasssembled (x)
 390   (declare (optimize debug))
 391   (+ x x))
 392
 393 (with-test (:name (disassemble :high-debug-load))
 394   (let* ((oopses (make-string-output-stream))
 395          (disassembly
 396            (let ((*error-output* oopses))
 397              (with-output-to-string (*standard-output*)
 398                (disassemble 'this-too-will-be-disasssembled)))))
 399     (with-input-from-string (s disassembly)
 400       (assert (equal "; disassembly for THIS-TOO-WILL-BE-DISASSSEMBLED"
 401                      (read-line s))))
 402     (let ((problems (get-output-stream-string oopses)))
 403       (unless (zerop (length problems))
 404         (error problems)))))
 405
 406 ;; The test named :GF-dispatch-backtrace depends on the fact that renaming
 407 ;; a closure works, and that the debugger can extract a closure name.
 408 ;; First things first: verify that a closure can be named.
 409 (defun make-adder (x)
 410   (sb-impl::set-closure-name (lambda (y) (+ x y)) `(adder ,x)))
 411 (with-test (:name :closure-renaming-really-works)
 412   (let ((f1 (make-adder 5))
 413         (expect "#<CLOSURE (ADDER 5)"))
 414     (assert (= (mismatch (write-to-string (make-adder 5)) expect)
 415                (length expect)))
 416     (assert (and (eq (sb-impl::set-closure-name f1 "ADD5") f1)
 417                  (string= (sb-impl::%fun-name f1) "ADD5")))))
 418
 419 (with-test (:name (:xep-arglist-clean-up :bug-1192929))
 420   (assert
 421    (block nil
 422      (handler-bind ((error (lambda (e)
 423                              (declare (ignore e))
 424                              (return (< (length (car (sb-debug:list-backtrace :count 1)))
 425                                         10)))))
 426        (funcall (compile nil `(lambda (i) (declare ((mod 65536) i)) i)) nil)))))
 427
 428 ;;; bug-1261646
 429
 430 (defun print-backtrace-to-string/debug-print-variable-alist (x)
 431   (values
 432    (with-output-to-string (stream)
 433      (let ((*debug-print-variable-alist* '((*print-length* . 5)
 434                                            (*print-level* . 3))))
 435        (sb-debug:print-backtrace :stream stream :count 5)))
 436    x)) ; Force use of X to prevent flushing
 437
 438 (with-test (:name (:print-frame-call :respect *debug-print-variable-alist*
 439                    *print-length* :bug-1261646))
 440   (let* ((printed (print-backtrace-to-string/debug-print-variable-alist (make-array 200)))
 441          (call "(PRINT-BACKTRACE-TO-STRING/DEBUG-PRINT-VARIABLE-ALIST ")
 442          (position (+ (search call printed) (length call))))
 443     (assert (eql position (search "#(0 0 0 0 0 ...)" printed :start2 position)))))
 444
 445 (with-test (:name (:print-frame-call :respect *debug-print-variable-alist*
 446                    *print-level* :bug-1261646))
 447   (let* ((printed (print-backtrace-to-string/debug-print-variable-alist
 448                    '(((((1)))))))
 449          (call "(PRINT-BACKTRACE-TO-STRING/DEBUG-PRINT-VARIABLE-ALIST ")
 450          (position (+ (search call printed) (length call))))
 451     (assert (eql position (search "((#))" printed :start2 position)))))
 452
 453
 454 (defvar *x* nil)
 455 (defun foo (a) a)
 456
 457 (with-test (:name :trace-debug-arg)
 458   (trace foo :print-after (setf *x* (sb-debug:arg 0)))
 459   (foo 1)
 460   (assert (eql *x* 1))
 461
 462   (trace foo :print (setf *x* (sb-debug:arg 0)))
 463   (foo 2)
 464   (assert (eql *x* 2))
 465
 466   (trace foo :condition (eql (setf *x* (sb-debug:arg 0)) 0))
 467   (foo 3)
 468   (assert (eql *x* 3))
 469
 470   (trace foo :condition-after (setf *x* (sb-debug:arg 0)))
 471   (foo 4)
 472   (assert (eql *x* 4))
 473
 474   (trace foo :break (and (setf *x* (sb-debug:arg 0)) nil))
 475   (foo 5)
 476   (assert (eql *x* 5))
 477
 478   (trace foo :break-all (and (setf *x* (sb-debug:arg 0)) nil))
 479   (foo 6)
 480   (assert (eql *x* 6))
 481   (trace foo :break-after (and (setf *x* (sb-debug:arg 0)) nil))
 482   (foo 7))
 483
 484 (defun frobbleize (arg) (sb-debug:print-backtrace) 'win)
 485 (defmethod low-debug-method ((self t))
 486   (declare (optimize (debug 0)))
 487   (frobbleize 'me) ; make this not a tail call, so it remains on stack
 488   5)
 489 (with-test (:name :clean-fast-method-frame-lossage)
 490   (low-debug-method 42)) ; no need to assert. it either crashes or doesn't
 491
 492 (defun return-65535 ()
 493   65535)
 494
 495 (with-test (:name :indirect-closure-values)
 496   (let ((count 0))
 497     (block nil
 498       (handler-bind ((error (lambda (c)
 499                               (declare (ignore c))
 500                               (sb-debug::map-backtrace
 501                                (lambda (frame)
 502                                  (let ((sb-debug::*current-frame* frame)
 503                                        (name (sb-debug::frame-call frame)))
 504                                    (when (or (eq name 'test)
 505                                              (and (consp name)
 506                                                   (or (eql (search '(labels f1) name) 0)
 507                                                       (eql (search '(labels f2) name) 0))))
 508                                      (incf count)
 509                                      (assert (eql (var 'a) 2))))))
 510                               (return))))
 511         (funcall
 512          (compile nil
 513                   `(sb-int:named-lambda test ()
 514                      (declare (optimize debug))
 515                      (let ((a 1))
 516                        (labels
 517                            ((f1 ()
 518                               (incf a)
 519                               (signal 'error))
 520                             (f2 ()
 521                               (f1)))
 522                          (f2))))))))
 523     (assert (= count 3))))
 524
 525 (with-test (:name :indirect-closure-values.2)
 526   (let ((count 0))
 527     (block nil
 528       (handler-bind ((error (lambda (c)
 529                               (declare (ignore c))
 530                               (sb-debug::map-backtrace
 531                                (lambda (frame)
 532                                  (let ((sb-debug::*current-frame* frame)
 533                                        (name (sb-debug::frame-call frame)))
 534                                    (when (or (eq name 'test)
 535                                              (and (consp name)
 536                                                   (or (eql (search '(labels f1) name) 0)
 537                                                       (eql (search '(labels f2) name) 0))))
 538                                      (incf count)
 539                                      (assert (eql (var 'a) 65535))))))
 540                               (return))))
 541         (funcall
 542          (compile nil
 543                   `(sb-int:named-lambda test ()
 544                      (declare (optimize debug))
 545                      (let ((a (return-65535)))
 546                        (declare ((unsigned-byte 16) a))
 547                        (labels
 548                            ((f1 ()
 549                               (incf a)
 550                               (signal 'error))
 551                             (f2 ()
 552                               (f1)))
 553                          (f2))))))))
 554     (assert (= count 3))))
 555
 556 (with-test (:name :non-tail-self-call-bad-variables)
 557   (let ((count 0))
 558     (block nil
 559       (handler-bind ((error (lambda (c)
 560                               (declare (ignore c))
 561                               (sb-debug::map-backtrace
 562                                (lambda (frame)
 563                                  (let ((sb-debug::*current-frame* frame))
 564                                    (multiple-value-bind (name args)
 565                                        (sb-debug::frame-call frame)
 566                                      (when (eq name 'test)
 567                                        (assert (or (null args)
 568                                                    (equal args '(nil))))
 569                                        (incf count))))))
 570                               (return))))
 571         (funcall
 572          (compile nil `(sb-int:named-lambda test (&optional x)
 573                          (declare (optimize sb-c::recognize-self-calls))
 574                          (signal 'error :format-control "~a" :format-arguments (list x))
 575                          (test 1)
 576                          1)))))
 577     (assert (= count 1))))
 578
 579 (with-test (:name :local-tail-call-variables)
 580   (let ((count 0))
 581     (block nil
 582       (handler-bind ((error (lambda (c)
 583                               (declare (ignore c))
 584                               (sb-debug::map-backtrace
 585                                (lambda (frame)
 586                                  (let ((sb-debug::*current-frame* frame))
 587                                    (multiple-value-bind (name args)
 588                                        (sb-debug::frame-call frame)
 589                                      (when (eq name 'test)
 590                                        (assert (equal args '(error)))
 591                                        (incf count))))))
 592                               (return))))
 593         (funcall
 594          (compile nil `(sb-int:named-lambda test (x)
 595                          (signal x)
 596                          ;; If :local-tail-call fails, this will fail
 597                          ;; too, because there's no jump between
 598                          ;; SIGNAL and the call to TAIL and it will
 599                          ;; show (flet tail) in the backtrace.
 600                          (flet ((tail ()))
 601                            (declare (notinline tail))
 602                            (tail))))
 603          'error)))
 604     (assert (= count 1))))
 605
 606 (with-test (:name :variables-surrounding-inlined-code)
 607   (let ((count 0))
 608     (block nil
 609       (handler-bind ((error (lambda (c)
 610                               (declare (ignore c))
 611                               (sb-debug::map-backtrace
 612                                (lambda (frame)
 613                                  (let ((sb-debug::*current-frame* frame))
 614                                    (multiple-value-bind (name)
 615                                        (sb-debug::frame-call frame)
 616                                      (when (eq name 'test)
 617                                        (assert (equal (sb-debug:var 'l) '(1 2 3)))
 618                                        (incf count))))))
 619                               (return))))
 620         (funcall
 621          (compile nil `(sb-int:named-lambda test (a i)
 622                          (declare (optimize (debug 3)))
 623                          (let ((l (list 1 2 3)))
 624                            (aref a i)
 625                            l)))
 626          #(1) 2)))
 627     (assert (= count 1))))
 628
 629 (with-test (:name :variables-surrounding-inlined-code.2)
 630   (let ((count 0))
 631     (block nil
 632       (handler-bind ((error (lambda (c)
 633                               (declare (ignore c))
 634                               (sb-debug::map-backtrace
 635                                (lambda (frame)
 636                                  (let ((sb-debug::*current-frame* frame))
 637                                    (multiple-value-bind (name)
 638                                        (sb-debug::frame-call frame)
 639                                      (when (eq name 'test)
 640                                        (assert (equal (sb-debug:var 'l) '(1 2 3)))
 641                                        (incf count))))))
 642                               (return))))
 643         (funcall
 644          (compile nil `(sb-int:named-lambda test (c)
 645                          (declare (optimize (debug 3)))
 646                          (let ((l (list 1 2 3)))
 647                            (map 'list #'signal c)
 648                            l)))
 649          '(error))))
 650     (assert (= count 1))))