tests/compiler.pure.lisp

   1 ;;;; various compiler tests without side effects
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; While most of SBCL is derived from the CMU CL system, the test
   7 ;;;; files (like this one) were written from scratch after the fork
   8 ;;;; from CMU CL.
   9 ;;;;
  10 ;;;; This software is in the public domain and is provided with
  11 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  12 ;;;; more information.
  13
  14 (cl:in-package :cl-user)
  15
  16 ;;; Exercise a compiler bug (by crashing the compiler).
  17 ;;;
  18 ;;; This test code is from Douglas Crosher's simplified TICKLE-BUG
  19 ;;; (2000-09-06 on cmucl-imp).
  20 ;;;
  21 ;;; The bug was fixed by Douglas Crosher's patch, massaged for SBCL by
  22 ;;; Martin Atzmueller (2000-09-13 on sbcl-devel).
  23 (funcall (compile nil
  24                   '(lambda ()
  25                      (labels ((fun1 ()
  26                                 (fun2))
  27                               (fun2 ()
  28                                 (when nil
  29                                   (tagbody
  30                                    tag
  31                                    (fun2)
  32                                    (go tag)))
  33                                 (when nil
  34                                   (tagbody
  35                                    tag
  36                                    (fun1)
  37                                    (go tag)))))
  38
  39                        (fun1)
  40                        nil))))
  41
  42 ;;; Exercise a compiler bug (by crashing the compiler).
  43 ;;;
  44 ;;; Tim Moore gave a patch for this bug in CMU CL 2000-05-24 on
  45 ;;; cmucl-imp, and Martin Atzmueller applied it to SBCL.
  46 (funcall (compile nil
  47                   '(lambda (x)
  48                      (or (integerp x)
  49                          (block used-by-some-y?
  50                            (flet ((frob (stk)
  51                                     (dolist (y stk)
  52                                       (unless (rejected? y)
  53                                         (return-from used-by-some-y? t)))))
  54                              (declare (inline frob))
  55                              (frob (rstk x))
  56                              (frob (mrstk x)))
  57                            nil))))
  58          13)
  59
  60 ;;; bug 112, reported by Martin Atzmueller 2001-06-25 (originally
  61 ;;; from Bruno Haible in CMU CL bugs collection), fixed by
  62 ;;; Alexey Dejneka 2002-01-27
  63 (assert (= 1 ; (used to give 0 under bug 112)
  64            (let ((x 0))
  65              (declare (special x))
  66              (let ((x 1))
  67                (let ((y x))
  68                  (declare (special x)) y)))))
  69 (assert (= 1 ; (used to give 1 even under bug 112, still works after fix)
  70            (let ((x 0))
  71              (declare (special x))
  72              (let ((x 1))
  73                (let ((y x) (x 5))
  74                  (declare (special x)) y)))))
  75
  76 ;;; another LET-related bug fixed by Alexey Dejneka at the same
  77 ;;; time as bug 112
  78 (multiple-value-bind (fun warnings-p failure-p)
  79     ;; should complain about duplicate variable names in LET binding
  80     (compile nil
  81              '(lambda ()
  82                (let (x
  83                      (x 1))
  84                  (list x))))
  85   (declare (ignore warnings-p))
  86   (assert (functionp fun))
  87   (assert failure-p))
  88
  89 ;;; bug 169 (reported by Alexey Dejneka 2002-05-12, fixed by David
  90 ;;; Lichteblau 2002-05-21)
  91 (progn
  92   (multiple-value-bind (fun warnings-p failure-p)
  93       (compile nil
  94                ;; Compiling this code should cause a STYLE-WARNING
  95                ;; about *X* looking like a special variable but not
  96                ;; being one.
  97                '(lambda (n)
  98                   (let ((*x* n))
  99                     (funcall (symbol-function 'x-getter))
 100                     (print *x*))))
 101     (assert (functionp fun))
 102     (assert warnings-p)
 103     (assert (not failure-p)))
 104   (multiple-value-bind (fun warnings-p failure-p)
 105       (compile nil
 106                ;; Compiling this code should not cause a warning
 107                ;; (because the DECLARE turns *X* into a special
 108                ;; variable as its name suggests it should be).
 109                '(lambda (n)
 110                   (let ((*x* n))
 111                     (declare (special *x*))
 112                     (funcall (symbol-function 'x-getter))
 113                     (print *x*))))
 114     (assert (functionp fun))
 115     (assert (not warnings-p))
 116     (assert (not failure-p))))
 117
 118 ;;; a bug in 0.7.4.11
 119 (dolist (i '(a b 1 2 "x" "y"))
 120   ;; In sbcl-0.7.4.11, the compiler tried to source-transform the
 121   ;; TYPEP here but got confused and died, doing
 122   ;;   (ASSOC '(AND INTEGERP (SATISFIES PLUSP)))
 123   ;;          *BACKEND-TYPE-PREDICATES*
 124   ;;          :TEST #'TYPE=)
 125   ;; and blowing up because TYPE= tried to call PLUSP on the
 126   ;; characters of the MEMBER-TYPE representing STANDARD-CHAR.
 127   (when (typep i '(and integer (satisfies oddp)))
 128     (print i)))
 129 (dotimes (i 14)
 130   (when (typep i '(and integer (satisfies oddp)))
 131     (print i)))
 132
 133 ;;; bug 156 (reported by APD sbcl-devel 2002-04-12, fixed by CSR patch
 134 ;;; sbcl-devel 2002-07-02): FUNCTION-LAMBDA-EXPRESSION of
 135 ;;; interactively-compiled functions was broken by sleaziness and
 136 ;;; confusion in the assault on 0.7.0, so this expression used to
 137 ;;; signal TYPE-ERROR when it found NIL instead of a DEBUG-SOURCE.
 138 (eval '(function-lambda-expression #'(lambda (x) x)))
 139
 140 ;;; bug caught and fixed by Raymond Toy cmucl-imp 2002-07-10: &REST
 141 ;;; variable is not optional.
 142 (assert (null (ignore-errors (eval '(funcall (lambda (&rest) 12))))))
 143
 144 ;;; on the PPC, we got the magic numbers in undefined_tramp wrong for
 145 ;;; a while; fixed by CSR 2002-07-18
 146 (multiple-value-bind (value error)
 147     (ignore-errors (some-undefined-function))
 148   (assert (null value))
 149   (assert (eq (cell-error-name error) 'some-undefined-function)))
 150
 151 ;;; Non-symbols shouldn't be allowed as VARs in lambda lists. (Where VAR
 152 ;;; is a variable name, as in section 3.4.1 of the ANSI spec.)
 153 (assert (null (ignore-errors (eval '(lambda ("foo") 12)))))
 154 (assert (ignore-errors (eval '(lambda (foo) 12))))
 155 (assert (null (ignore-errors (eval '(lambda (&optional 12) "foo")))))
 156 (assert (ignore-errors (eval '(lambda (&optional twelve) "foo"))))
 157 (assert (null (ignore-errors (eval '(lambda (&optional (12 12)) "foo")))))
 158 (assert (ignore-errors (eval '(lambda (&optional (twelve 12)) "foo"))))
 159 (assert (null (ignore-errors (eval '(lambda (&key #\c) "foo")))))
 160 (assert (ignore-errors (eval '(lambda (&key c) "foo"))))
 161 (assert (null (ignore-errors (eval '(lambda (&key (#\c #\c)) "foo")))))
 162 (assert (ignore-errors (eval '(lambda (&key (c #\c)) "foo"))))
 163 (assert (null (ignore-errors (eval '(lambda (&key ((#\c #\c) #\c)) "foo")))))
 164 (assert (ignore-errors (eval '(lambda (&key ((:c cbyanyothername) #\c)) "foo"))))
 165
 166 ;;; As reported and fixed by Antonio Martinez-Shotton sbcl-devel
 167 ;;; 2002-09-12, this failed in sbcl-0.7.7.23. (with failed AVER
 168 ;;; "(LEAF-HAS-SOURCE-NAME-P LEAF)")
 169 (assert (= (funcall (eval `(lambda (x) (funcall ,(lambda (y) (+ y 3)) x))) 14)
 170            17))
 171
 172 ;;; bug 181: bad type specifier dropped compiler into debugger
 173 (assert (list (compile nil '(lambda (x)
 174                              (declare (type (0) x))
 175                              x))))
 176
 177 (let ((f (compile nil '(lambda (x)
 178                         (make-array 1 :element-type '(0))))))
 179   (assert (null (ignore-errors (funcall f)))))
 180
 181 ;;; the following functions must not be flushable
 182 (dolist (form '((make-sequence 'fixnum 10)
 183                 (concatenate 'fixnum nil)
 184                 (map 'fixnum #'identity nil)
 185                 (merge 'fixnum nil nil #'<)))
 186   (assert (not (eval `(locally (declare (optimize (safety 0)))
 187                         (ignore-errors (progn ,form t)))))))
 188
 189 (dolist (form '((values-list (car (list '(1 . 2))))
 190                 (fboundp '(set bet))
 191                 (atan #c(1 1) (car (list #c(2 2))))
 192                 (nthcdr (car (list (floor (cos 3)))) '(1 2 3 4 5))
 193                 (nthcdr (car (list 5)) '(1 2 . 3))))
 194   (assert (not (eval `(locally (declare (optimize (safety 3)))
 195                         (ignore-errors (progn ,form t)))))))
 196
 197 ;;; a bug in the MAP deftransform caused non-VECTOR array specifiers
 198 ;;; to cause errors in the compiler.  Fixed by CSR in 0.7.8.10
 199 (assert (list (compile nil '(lambda (x) (map 'simple-array 'identity x)))))
 200
 201 ;;; bug 129: insufficient syntax checking in MACROLET
 202 (multiple-value-bind (result error)
 203     (ignore-errors (eval '(macrolet ((foo x `',x)) (foo 1 2 3))))
 204   (assert (null result))
 205   (assert (typep error 'error)))
 206
 207 ;;; bug 124: environment of MACROLET-introduced macro expanders
 208 (assert (equal
 209          (macrolet ((mext (x) `(cons :mext ,x)))
 210            (macrolet ((mint (y) `'(:mint ,(mext y))))
 211              (list (mext '(1 2))
 212                    (mint (1 2)))))
 213          '((:MEXT 1 2) (:MINT (:MEXT 1 2)))))
 214
 215 ;;; bug 48c: SYMBOL-MACROLET should signal PROGRAM-ERROR if introduced
 216 ;;; symbol is declared to be SPECIAL
 217 (multiple-value-bind (result error)
 218     (ignore-errors (funcall (lambda ()
 219                               (symbol-macrolet ((s '(1 2)))
 220                                   (declare (special s))
 221                                 s))))
 222   (assert (null result))
 223   (assert (typep error 'program-error)))
 224
 225 ;;; ECASE should treat a bare T as a literal key
 226 (multiple-value-bind (result error)
 227     (ignore-errors (ecase 1 (t 0)))
 228   (assert (null result))
 229   (assert (typep error 'type-error)))
 230
 231 (multiple-value-bind (result error)
 232     (ignore-errors (ecase 1 (t 0) (1 2)))
 233   (assert (eql result 2))
 234   (assert (null error)))
 235
 236 ;;; FTYPE should accept any functional type specifier
 237 (compile nil '(lambda (x) (declare (ftype function f)) (f x)))
 238
 239 ;;; FUNCALL of special operators and macros should signal an
 240 ;;; UNDEFINED-FUNCTION error
 241 (multiple-value-bind (result error)
 242     (ignore-errors (funcall 'quote 1))
 243   (assert (null result))
 244   (assert (typep error 'undefined-function))
 245   (assert (eq (cell-error-name error) 'quote)))
 246 (multiple-value-bind (result error)
 247     (ignore-errors (funcall 'and 1))
 248   (assert (null result))
 249   (assert (typep error 'undefined-function))
 250   (assert (eq (cell-error-name error) 'and)))
 251
 252 ;;; PSETQ should behave when given complex symbol-macro arguments
 253 (multiple-value-bind (sequence index)
 254     (symbol-macrolet ((x (aref a (incf i)))
 255                       (y (aref a (incf i))))
 256         (let ((a (copy-seq #(0 1 2 3 4 5 6 7 8 9)))
 257               (i 0))
 258           (psetq x (aref a (incf i))
 259                  y (aref a (incf i)))
 260           (values a i)))
 261   (assert (equalp sequence #(0 2 2 4 4 5 6 7 8 9)))
 262   (assert (= index 4)))
 263
 264 (multiple-value-bind (result error)
 265     (ignore-errors
 266       (let ((x (list 1 2)))
 267         (psetq (car x) 3)
 268         x))
 269   (assert (null result))
 270   (assert (typep error 'program-error)))
 271
 272 ;;; COPY-SEQ should work on known-complex vectors:
 273 (assert (equalp #(1)
 274                 (let ((v (make-array 0 :fill-pointer 0)))
 275                   (vector-push-extend 1 v)
 276                   (copy-seq v))))
 277
 278 ;;; to support INLINE functions inside MACROLET, it is necessary for
 279 ;;; FUNCTION-LAMBDA-EXPRESSION to return a proper lambda expression in
 280 ;;; certain circumstances, one of which is when compile is called from
 281 ;;; top-level.
 282 (assert (equal
 283          (function-lambda-expression
 284           (compile nil '(lambda (x) (block nil (print x)))))
 285          '(lambda (x) (block nil (print x)))))
 286
 287 ;;; bug 62: too cautious type inference in a loop
 288 (assert (nth-value
 289          2
 290          (compile nil
 291                   '(lambda (a)
 292                     (declare (optimize speed (safety 0)))
 293                     (typecase a
 294                       (array (loop (print (car a)))))))))
 295
 296 ;;; Bug reported by Robert E. Brown sbcl-devel 2003-02-02: compiler
 297 ;;; failure
 298 (compile nil
 299          '(lambda (key tree collect-path-p)
 300            (let ((lessp (key-lessp tree))
 301                  (equalp (key-equalp tree)))
 302              (declare (type (function (t t) boolean) lessp equalp))
 303              (let ((path '(nil)))
 304                (loop for node = (root-node tree)
 305                   then (if (funcall lessp key (node-key node))
 306                            (left-child node)
 307                            (right-child node))
 308                   when (null node)
 309                   do (return (values nil nil nil))
 310                   do (when collect-path-p
 311                        (push node path))
 312                   (when (funcall equalp key (node-key node))
 313                     (return (values node path t))))))))
 314
 315 ;;; CONSTANTLY should return a side-effect-free function (bug caught
 316 ;;; by Paul Dietz' test suite)
 317 (let ((i 0))
 318   (let ((fn (constantly (progn (incf i) 1))))
 319     (assert (= i 1))
 320     (assert (= (funcall fn) 1))
 321     (assert (= i 1))
 322     (assert (= (funcall fn) 1))
 323     (assert (= i 1))))
 324
 325 ;;; Bug 240 reported by tonyms on #lisp IRC 2003-02-25 (modified version)
 326 (loop for (fun warns-p) in
 327      '(((lambda (&optional *x*) *x*) t)
 328        ((lambda (&optional *x* &rest y) (values *x* y)) t)
 329        ((lambda (&optional *print-length*) (values *print-length*)) nil)
 330        ((lambda (&optional *print-length* &rest y) (values *print-length* y)) nil)
 331        ((lambda (&optional *x*) (declare (special *x*)) (values *x*)) nil)
 332        ((lambda (&optional *x* &rest y) (declare (special *x*)) (values *x* y)) nil))
 333    for real-warns-p = (nth-value 1 (compile nil fun))
 334    do (assert (eq warns-p real-warns-p)))
 335
 336 ;;; Bug reported by Gilbert Baumann on #lisp IRC 2003-03-26
 337 (assert (equal (funcall (eval '(lambda (x &optional (y (pop x))) (list x y)))
 338                         '(1 2))
 339                '((2) 1)))
 340
 341 ;;; Bug reported by Paul Dietz on cmucl-imp and fixed by Gerd
 342 ;;; Moellmann: CONVERT-MORE-CALL failed on the following call
 343 (assert (eq (eval '((lambda (&key) 'u) :allow-other-keys nil)) 'u))
 344
 345 (raises-error? (multiple-value-bind (a b c)
 346                    (eval '(truncate 3 4))
 347                  (declare (integer c))
 348                  (list a b c))
 349                type-error)
 350
 351 (assert (equal (multiple-value-list (the (values &rest integer)
 352                                       (eval '(values 3))))
 353                '(3)))
 354
 355 ;;; Bug relating to confused representation for the wild function
 356 ;;; type:
 357 (assert (null (funcall (eval '(lambda () (multiple-value-list (values)))))))
 358
 359 ;;; &ENVIRONMENT parameter should be bound first (from Paul Dietz'
 360 ;;; test suite)
 361 (assert (eql (macrolet ((foo () 1))
 362                (macrolet ((%f (&optional (x (macroexpand '(foo) env)) &environment env)
 363                             x))
 364                  (%f)))
 365              1))
 366
 367 ;;; MACROLET should check for duplicated names
 368 (dolist (ll '((x (z x))
 369               (x y &optional z x w)
 370               (x y &optional z z)
 371               (x &rest x)
 372               (x &rest (y x))
 373               (x &optional (y nil x))
 374               (x &optional (y nil y))
 375               (x &key x)
 376               (x &key (y nil x))
 377               (&key (y nil z) (z nil w))
 378               (&whole x &optional x)
 379               (&environment x &whole x)))
 380   (assert (nth-value 2
 381                      (handler-case
 382                          (compile nil
 383                                   `(lambda ()
 384                                      (macrolet ((foo ,ll nil)
 385                                                 (bar (&environment env)
 386                                                   `',(macro-function 'foo env)))
 387                                        (bar))))
 388                        (error (c)
 389                          (values nil t t))))))
 390
 391 (assert (typep (eval `(the arithmetic-error
 392                            ',(make-condition 'arithmetic-error)))
 393                'arithmetic-error))
 394
 395 (assert (not (nth-value
 396               2 (compile nil '(lambda ()
 397                                (make-array nil :initial-element 11))))))
 398
 399 (assert (raises-error? (funcall (eval #'open) "assertoid.lisp"
 400                                 :external-format '#:nonsense)))
 401 (assert (raises-error? (funcall (eval #'load) "assertoid.lisp"
 402                                 :external-format '#:nonsense)))
 403
 404 (assert (= (the (values integer symbol) (values 1 'foo 13)) 1))
 405
 406 (let ((f (compile nil
 407                   '(lambda (v)
 408                     (declare (optimize (safety 3)))
 409                     (list (the fixnum (the (real 0) (eval v))))))))
 410   (assert (raises-error? (funcall f 0.1) type-error))
 411   (assert (raises-error? (funcall f -1) type-error)))
 412
 413 ;;; the implicit block does not enclose lambda list
 414 (let ((forms '((defmacro #1=#:foo (&optional (x (return-from #1#))))
 415                #+nil(macrolet ((#2=#:foo (&optional (x (return-from #2#))))))
 416                (define-compiler-macro #3=#:foo (&optional (x (return-from #3#))))
 417                (deftype #4=#:foo (&optional (x (return-from #4#))))
 418                (define-setf-expander #5=#:foo (&optional (x (return-from #5#))))
 419                (defsetf #6=#:foo (&optional (x (return-from #6#))) ()))))
 420   (dolist (form forms)
 421     (assert (nth-value 2 (compile nil `(lambda () ,form))))))
 422
 423 (assert (nth-value 2 (compile nil
 424                               '(lambda ()
 425                                 (svref (make-array '(8 9) :adjustable t) 1)))))
 426
 427 ;;; CHAR= did not check types of its arguments (reported by Adam Warner)
 428 (raises-error? (funcall (compile nil '(lambda (x y z) (char= x y z)))
 429                         #\a #\b nil)
 430                type-error)
 431 (raises-error? (funcall (compile nil
 432                                  '(lambda (x y z)
 433                                    (declare (optimize (speed 3) (safety 3)))
 434                                    (char/= x y z)))
 435                         nil #\a #\a)
 436                type-error)
 437
 438 ;;; Compiler lost return type of MAPCAR and friends
 439 (dolist (fun '(mapcar mapc maplist mapl))
 440   (assert (nth-value 2 (compile nil
 441                                 `(lambda (x)
 442                                    (1+ (,fun #'print x)))))))
 443
 444 (assert (nth-value 2 (compile nil
 445                               '(lambda ()
 446                                 (declare (notinline mapcar))
 447                                 (1+ (mapcar #'print '(1 2 3)))))))
 448
 449 ;;; bug found by Paul Dietz: (SETF AREF) for bit vectors with constant
 450 ;;; index was effectless
 451 (let ((f (compile nil '(lambda (a v)
 452                         (declare (type simple-bit-vector a) (type bit v))
 453                         (declare (optimize (speed 3) (safety 0)))
 454                         (setf (aref a 0) v)
 455                         a))))
 456   (let ((y (make-array 2 :element-type 'bit :initial-element 0)))
 457     (assert (equal y #*00))
 458     (funcall f y 1)
 459     (assert (equal y #*10))))
 460
 461 (handler-bind ((sb-ext:compiler-note #'error))
 462   (compile nil '(lambda (x)
 463                  (declare (type (simple-array (simple-string 3) (5)) x))
 464                  (aref (aref x 0) 0))))
 465
 466 ;;; compiler failure
 467 (let ((f (compile nil '(lambda (x) (typep x '(not (member 0d0)))))))
 468   (assert (funcall f 1d0)))
 469
 470 (compile nil '(lambda (x)
 471                (declare (double-float x))
 472                (let ((y (* x pi)))
 473                  (atan y y))))
 474
 475 ;;; bogus optimization of BIT-NOT
 476 (multiple-value-bind (result x)
 477     (eval '(let ((x (eval #*1001)))
 478             (declare (optimize (speed 2) (space 3))
 479                      (type (bit-vector) x))
 480             (values (bit-not x nil) x)))
 481   (assert (equal x #*1001))
 482   (assert (equal result #*0110)))
 483
 484 ;;; the VECTOR type in CONCATENATE/MERGE/MAKE-SEQUENCE means (VECTOR T).
 485 (handler-bind ((sb-ext:compiler-note #'error))
 486   (assert (equalp (funcall
 487                    (compile
 488                     nil
 489                     '(lambda ()
 490                       (let ((x (make-sequence 'vector 10 :initial-element 'a)))
 491                         (setf (aref x 4) 'b)
 492                         x))))
 493                   #(a a a a b a a a a a))))
 494
 495 ;;; this is not a check for a bug, but rather a test of compiler
 496 ;;; quality
 497 (dolist (type '((integer 0 *)           ; upper bound
 498                 (real (-1) *)
 499                 float                   ; class
 500                 (real * (-10))          ; lower bound
 501                 ))
 502   (assert (nth-value
 503            1 (compile nil
 504                       `(lambda (n)
 505                          (declare (optimize (speed 3) (compilation-speed 0)))
 506                          (loop for i from 1 to (the (integer -17 10) n) by 2
 507                                collect (when (> (random 10) 5)
 508                                          (the ,type (- i 11)))))))))
 509
 510 ;;; bug 278b
 511 ;;;
 512 ;;; We suppose that INTEGER arithmetic cannot be efficient, and the
 513 ;;; compiler has an optimized VOP for +; so this code should cause an
 514 ;;; efficiency note.
 515 (assert (eq (block nil
 516               (handler-case
 517                   (compile nil '(lambda (i)
 518                                  (declare (optimize speed))
 519                                  (declare (type integer i))
 520                                  (+ i 2)))
 521                 (sb-ext:compiler-note (c) (return :good))))
 522             :good))
 523
 524 ;;; bug 277: IGNORE/IGNORABLE declarations should be acceptable for
 525 ;;; symbol macros
 526 (assert (not (nth-value 1 (compile nil '(lambda (u v)
 527                                          (symbol-macrolet ((x u)
 528                                                            (y v))
 529                                              (declare (ignore x)
 530                                                       (ignorable y))
 531                                            (list u v)))))))
 532
 533 ;;; bug reported by Paul Dietz: wrong optimizer for (EXPT ... 0)
 534 (loop for (x type) in
 535       '((14 integer)
 536         (14 rational)
 537         (-14/3 (rational -8 11))
 538         (3s0 short-float)
 539         (4f0 single-float)
 540         (5d0 double-float)
 541         (6l0 long-float)
 542         (14 real)
 543         (13/2 real)
 544         (2s0 real)
 545         (2d0 real)
 546         (#c(-3 4) (complex fixnum))
 547         (#c(-3 4) (complex rational))
 548         (#c(-3/7 4) (complex rational))
 549         (#c(2s0 3s0) (complex short-float))
 550         (#c(2f0 3f0) (complex single-float))
 551         (#c(2d0 3d0) (complex double-float))
 552         (#c(2l0 3l0) (complex long-float))
 553         (#c(2d0 3s0) (complex float))
 554         (#c(2 3f0) (complex real))
 555         (#c(2 3d0) (complex real))
 556         (#c(-3/7 4) (complex real))
 557         (#c(-3/7 4) complex)
 558         (#c(2 3l0) complex))
 559       do (dolist (zero '(0 0s0 0f0 0d0 0l0))
 560            (dolist (real-zero (list zero (- zero)))
 561              (let* ((src `(lambda (x) (expt (the ,type x) ,real-zero)))
 562                     (fun (compile nil src))
 563                     (result (1+ (funcall (eval #'*) x real-zero))))
 564                (assert (eql result (funcall fun x)))))))
 565
 566 ;;; (SIGNED-BYTE 1) [ returned from the logxor derive-type optimizer ]
 567 ;;; wasn't recognized as a good type specifier.
 568 (let ((fun (lambda (x y)
 569              (declare (type (integer -1 0) x y) (optimize speed))
 570              (logxor x y))))
 571   (assert (= (funcall fun 0 0) 0))
 572   (assert (= (funcall fun 0 -1) -1))
 573   (assert (= (funcall fun -1 -1) 0)))
 574
 575 ;;; from PFD's torture test, triggering a bug in our effective address
 576 ;;; treatment.
 577 (compile
 578  nil
 579  `(lambda (a b)
 580     (declare (type (integer 8 22337) b))
 581     (logandc2
 582      (logandc2
 583       (* (logandc1 (max -29303 b) 4) b)
 584       (abs (logorc1 (+ (logandc1 -11 b) 2607688420) -31153924)))
 585      (logeqv (max a 0) b))))
 586
 587 ;;; Alpha floating point modes weren't being reset after an exception,
 588 ;;; leading to an exception on the second compile, below.
 589 (compile nil '(lambda (x y) (declare (type (double-float 0.0d0) x y)) (/ x y)))
 590 (handler-case (/ 1.0 0.0)
 591   ;; provoke an exception
 592   (arithmetic-error ()))
 593 (compile nil '(lambda (x y) (declare (type (double-float 0.0d0) x y)) (/ x y)))
 594
 595 ;;; bug reported by Paul Dietz: component last block does not have
 596 ;;; start ctran
 597 (compile nil
 598          '(lambda ()
 599            (declare (notinline + logand)
 600             (optimize (speed 0)))
 601            (LOGAND
 602             (BLOCK B5
 603               (FLET ((%F1 ()
 604                        (RETURN-FROM B5 -220)))
 605                 (LET ((V7 (%F1)))
 606                   (+ 359749 35728422))))
 607             -24076)))
 608
 609 ;;; bug 294 reported by Paul Dietz: miscompilation of REM and MOD
 610 (assert (= (funcall (compile nil `(lambda (b)
 611                                     (declare (optimize (speed 3))
 612                                              (type (integer 2 152044363) b))
 613                                     (rem b (min -16 0))))
 614                     108251912)
 615            8))
 616
 617 (assert (= (funcall (compile nil `(lambda (c)
 618                                     (declare (optimize (speed 3))
 619                                              (type (integer 23062188 149459656) c))
 620                                     (mod c (min -2 0))))
 621                     95019853)
 622            -1))
 623
 624 ;;; bug reported by Paul Dietz: block splitting inside FLUSH-DEAD-CODE
 625 (compile nil
 626          '(LAMBDA (A B C)
 627            (BLOCK B6
 628              (LOGEQV (REM C -6758)
 629                      (REM B (MAX 44 (RETURN-FROM B6 A)))))))
 630
 631 (compile nil '(lambda ()
 632                (block nil
 633                  (flet ((foo (x y) (if (> x y) (print x) (print y))))
 634                    (foo 1 2)
 635                    (bar)
 636                    (foo (return 14) 2)))))
 637
 638 ;;; bug in Alpha backend: not enough sanity checking of arguments to
 639 ;;; instructions
 640 (assert (= (funcall (compile nil
 641                              '(lambda (x)
 642                                 (declare (fixnum x))
 643                                 (ash x -257)))
 644                     1024)
 645            0))
 646
 647 ;;; bug found by WHN and pfdietz: compiler failure while referencing
 648 ;;; an entry point inside a deleted lambda
 649 (compile nil '(lambda ()
 650                (let (r3533)
 651                  (flet ((bbfn ()
 652                           (setf r3533
 653                                 (progn
 654                                   (flet ((truly (fn bbd)
 655                                            (let (r3534)
 656                                              (let ((p3537 nil))
 657                                                (unwind-protect
 658                                                     (multiple-value-prog1
 659                                                         (progn
 660                                                           (setf r3534
 661                                                                 (progn
 662                                                                   (bubf bbd t)
 663                                                                   (flet ((c-3536 ()
 664                                                                            (funcall fn)))
 665                                                                     (cdec #'c-3536
 666                                                                           (vector bbd))))))
 667                                                       (setf p3537 t))
 668                                                  (unless p3537
 669                                                    (error "j"))))
 670                                              r3534))
 671                                          (c (pd) (pdc pd)))
 672                                     (let ((a (smock a))
 673                                           (b (smock b))
 674                                           (b (smock c)))))))))
 675                    (wum #'bbfn "hc3" (list)))
 676                  r3533)))
 677 (compile nil '(lambda () (flet ((%f () (unwind-protect nil))) nil)))
 678
 679 ;;; the strength reduction of constant multiplication used (before
 680 ;;; sbcl-0.8.4.x) to lie to the compiler.  This meant that, under
 681 ;;; certain circumstances, the compiler would derive that a perfectly
 682 ;;; reasonable multiplication never returned, causing chaos.  Fixed by
 683 ;;; explicitly doing modular arithmetic, and relying on the backends
 684 ;;; being smart.
 685 (assert (= (funcall
 686             (compile nil
 687                      '(lambda (x)
 688                         (declare (type (integer 178956970 178956970) x)
 689                                  (optimize speed))
 690                         (* x 24)))
 691             178956970)
 692            4294967280))
 693
 694 ;;; bug in modular arithmetic and type specifiers
 695 (assert (= (funcall (compile nil (lambda (x) (logand x x 0)))
 696                     -1)
 697            0))
 698
 699 ;;; MISC.99 from Paul Dietz' random tester: FAST-ASH-MOD32-C VOP
 700 ;;; produced wrong result for shift >=32 on X86
 701 (assert (= 0 (funcall
 702               (compile nil
 703                        '(lambda (a)
 704                          (declare (type (integer 4303063 101130078) a))
 705                          (mask-field (byte 18 2) (ash a 77))))
 706               57132532)))
 707
 708 ;;; MISC.101 and MISC.103: FLUSH-DEST did not mark the USE's block for
 709 ;;; type check regeneration
 710 (assert (eql (funcall
 711               (compile nil '(lambda (a c)
 712                              (declare (type (integer 185501219873 303014665162) a))
 713                              (declare (type (integer -160758 255724) c))
 714                              (declare (optimize (speed 3)))
 715                              (let ((v8
 716                                     (- -554046873252388011622614991634432
 717                                        (ignore-errors c)
 718                                        (unwind-protect 2791485))))
 719                                (max (ignore-errors a)
 720                                     (let ((v6 (- v8 (restart-case 980))))
 721                                       (min v8 v6))))))
 722               259448422916 173715)
 723              259448422916))
 724 (assert (eql (funcall
 725               (compile nil '(lambda (a b)
 726                              (min -80
 727                               (abs
 728                                (ignore-errors
 729                                  (+
 730                                   (logeqv b
 731                                           (block b6
 732                                             (return-from b6
 733                                               (load-time-value -6876935))))
 734                                   (if (logbitp 1 a) b (setq a -1522022182249))))))))
 735               -1802767029877 -12374959963)
 736              -80))
 737
 738 ;;; various MISC.*, related to NODEs/LVARs with derived type NIL
 739 (assert (eql (funcall (compile nil '(lambda (c)
 740                                      (declare (type (integer -3924 1001809828) c))
 741                                      (declare (optimize (speed 3)))
 742                                      (min 47 (if (ldb-test (byte 2 14) c)
 743                                                  -570344431
 744                                                  (ignore-errors -732893970)))))
 745                       705347625)
 746              -570344431))
 747 (assert (eql (funcall
 748               (compile nil '(lambda (b)
 749                              (declare (type (integer -1598566306 2941) b))
 750                              (declare (optimize (speed 3)))
 751                              (max -148949 (ignore-errors b))))
 752               0)
 753              0))
 754 (assert (eql (funcall
 755               (compile nil '(lambda (b c)
 756                              (declare (type (integer -4 -3) c))
 757                              (block b7
 758                                (flet ((%f1 (f1-1 f1-2 f1-3)
 759                                         (if (logbitp 0 (return-from b7
 760                                                          (- -815145138 f1-2)))
 761                                             (return-from b7 -2611670)
 762                                             99345)))
 763                                  (let ((v2 (%f1 -2464 (%f1 -1146 c c) -2)))
 764                                    b)))))
 765               2950453607 -4)
 766              -815145134))
 767 (assert (eql (funcall
 768               (compile nil
 769                        '(lambda (b c)
 770                          (declare (type (integer -29742055786 23602182204) b))
 771                          (declare (type (integer -7409 -2075) c))
 772                          (declare (optimize (speed 3)))
 773                          (floor
 774                           (labels ((%f2 ()
 775                                      (block b6
 776                                        (ignore-errors (return-from b6
 777                                                         (if (= c 8) b 82674))))))
 778                             (%f2)))))
 779               22992834060 -5833)
 780              82674))
 781 (assert (equal (multiple-value-list
 782                 (funcall
 783                  (compile nil '(lambda (a)
 784                                 (declare (type (integer -944 -472) a))
 785                                 (declare (optimize (speed 3)))
 786                                 (round
 787                                  (block b3
 788                                    (return-from b3
 789                                      (if (= 55957 a) -117 (ignore-errors
 790                                                             (return-from b3 a))))))))
 791                  -589))
 792                '(-589 0)))
 793
 794 ;;; MISC.158
 795 (assert (zerop (funcall
 796                 (compile nil
 797                          '(lambda (a b c)
 798                            (declare (type (integer 79828 2625480458) a))
 799                            (declare (type (integer -4363283 8171697) b))
 800                            (declare (type (integer -301 0) c))
 801                            (if (equal 6392154 (logxor a b))
 802                                1706
 803                                (let ((v5 (abs c)))
 804                                  (logand v5
 805                                          (logior (logandc2 c v5)
 806                                                  (common-lisp:handler-case
 807                                                      (ash a (min 36 22477)))))))))
 808                 100000 0 0)))