1 ;;;; functions and macros to define and deal with internal errors
2 ;;;; (i.e. problems that can be signaled from assembler code)
4 ;;;; This software is part of the SBCL system. See the README file for
7 ;;;; This software is derived from the CMU CL system, which was
8 ;;;; written at Carnegie Mellon University and released into the
9 ;;;; public domain. The software is in the public domain and is
10 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
11 ;;;; files for more information.
13 (in-package "SB!KERNEL")
17 (defvar *internal-errors*
18 #.(map 'vector #'cdr sb!c:*backend-internal-errors*))
20 (eval-when (:compile-toplevel :execute)
22 (sb!xc:defmacro deferr (name args &rest body)
23 (let* ((rest-pos (position '&rest args))
24 (required (if rest-pos (subseq args 0 rest-pos) args))
28 (fn-name (symbolicate name "-HANDLER")))
30 ;; FIXME: Having a separate full DEFUN for each error doesn't
31 ;; seem to add much value, and it takes a lot of space. Perhaps
32 ;; we could do this dispatch with a big CASE statement instead?
33 (defun ,fn-name (name ,fp ,context ,sc-offsets)
34 ;; FIXME: Perhaps put in OPTIMIZE declaration to make this
37 ;; FIXME: It would probably be good to do *STACK-TOP-HINT*
38 ;; tricks to hide this internal error-handling logic from the
39 ;; poor high level user, so his debugger tells him about
40 ;; where his error was detected instead of telling him where
41 ;; he ended up inside the system error-handling logic.
42 (declare (ignorable name ,fp ,context ,sc-offsets))
43 (/show0 "about to do outer LETs in DEFERR macroexpanded DEFUN")
44 (let (,@(let ((offset -1))
45 (mapcar #'(lambda (var)
46 `(,var (sb!di::sub-access-debug-var-slot
53 `((,(nth (1+ rest-pos) args)
54 (mapcar #'(lambda (sc-offset)
55 (sb!di::sub-access-debug-var-slot
59 (nthcdr ,rest-pos ,sc-offsets))))))
61 (setf (svref *internal-errors* ,(error-number-or-lose name))
66 (deferr unknown-error (&rest args)
67 (error "unknown error:~{ ~S~})" args))
69 (deferr object-not-function-error (object)
73 :expected-type 'function))
75 (deferr object-not-list-error (object)
79 :expected-type 'list))
81 (deferr object-not-bignum-error (object)
85 :expected-type 'bignum))
87 (deferr object-not-ratio-error (object)
91 :expected-type 'ratio))
93 (deferr object-not-single-float-error (object)
97 :expected-type 'single-float))
99 (deferr object-not-double-float-error (object)
103 :expected-type 'double-float))
106 (deferr object-not-long-float-error (object)
110 :expected-type 'long-float))
112 (deferr object-not-simple-string-error (object)
116 :expected-type 'simple-string))
118 (deferr object-not-simple-bit-vector-error (object)
122 :expected-type 'simple-bit-vector))
124 (deferr object-not-simple-vector-error (object)
128 :expected-type 'simple-vector))
130 (deferr object-not-fixnum-error (object)
134 :expected-type 'fixnum))
136 (deferr object-not-function-or-symbol-error (object)
140 :expected-type '(or function symbol)))
142 (deferr object-not-vector-error (object)
146 :expected-type 'vector))
148 (deferr object-not-string-error (object)
152 :expected-type 'string))
154 (deferr object-not-bit-vector-error (object)
158 :expected-type 'bit-vector))
160 (deferr object-not-array-error (object)
164 :expected-type 'array))
166 (deferr object-not-number-error (object)
170 :expected-type 'number))
172 (deferr object-not-rational-error (object)
176 :expected-type 'rational))
178 (deferr object-not-float-error (object)
182 :expected-type 'float))
184 (deferr object-not-real-error (object)
188 :expected-type 'real))
190 (deferr object-not-integer-error (object)
194 :expected-type 'integer))
196 (deferr object-not-cons-error (object)
200 :expected-type 'cons))
202 (deferr object-not-symbol-error (object)
206 :expected-type 'symbol))
208 (deferr undefined-symbol-error (fdefn-or-symbol)
209 (error 'undefined-function
211 :name (etypecase fdefn-or-symbol
212 (symbol fdefn-or-symbol)
213 (fdefn (fdefn-name fdefn-or-symbol)))))
215 (deferr object-not-coerceable-to-function-error (object)
219 :expected-type 'coerceable-to-function))
221 (deferr invalid-argument-count-error (nargs)
222 (error 'simple-program-error
224 :format-control "invalid number of arguments: ~S"
225 :format-arguments (list nargs)))
227 (deferr bogus-argument-to-values-list-error (list)
228 (error 'simple-type-error
233 "~@<attempt to use VALUES-LIST on a dotted list: ~2I~_~S~:>"
234 :format-arguments (list list)))
236 (deferr unbound-symbol-error (symbol)
237 (error 'unbound-variable :function-name name :name symbol))
239 (deferr object-not-base-char-error (object)
243 :expected-type 'base-char))
245 (deferr object-not-sap-error (object)
249 :expected-type 'system-area-pointer))
251 (deferr invalid-unwind-error ()
252 (error 'simple-control-error
255 "attempt to RETURN-FROM a block or GO to a tag that no longer exists"))
257 (deferr unseen-throw-tag-error (tag)
258 (error 'simple-control-error
260 :format-control "attempt to THROW to a tag that does not exist: ~S"
261 :format-arguments (list tag)))
263 (deferr nil-function-returned-error (function)
264 (error 'simple-control-error
267 "A function with declared result type NIL returned:~% ~S"
268 :format-arguments (list function)))
270 (deferr division-by-zero-error (this that)
271 (error 'division-by-zero
274 :operands (list this that)))
276 (deferr object-not-type-error (object type)
277 (error (if (and (typep object 'instance)
278 (layout-invalid (%instance-layout object)))
283 :expected-type type))
285 (deferr layout-invalid-error (object layout)
286 (error 'layout-invalid
289 :expected-type (layout-class layout)))
291 (deferr odd-key-arguments-error ()
292 (error 'simple-program-error
294 :format-control "odd number of &KEY arguments"))
296 (deferr unknown-key-argument-error (key-name)
297 (error 'simple-program-error
299 :format-control "unknown &KEY argument: ~S"
300 :format-arguments (list key-name)))
302 (deferr invalid-array-index-error (array bound index)
306 "invalid array index ~D for ~S (should be nonnegative and <~D)"
307 :format-arguments (list index array bound)))
309 (deferr object-not-simple-array-error (object)
313 :expected-type 'simple-array))
315 (deferr object-not-signed-byte-32-error (object)
319 :expected-type '(signed-byte 32)))
321 (deferr object-not-unsigned-byte-32-error (object)
325 :expected-type '(unsigned-byte 32)))
327 (deferr object-not-simple-array-unsigned-byte-2-error (object)
331 :expected-type '(simple-array (unsigned-byte 2) (*))))
333 (deferr object-not-simple-array-unsigned-byte-4-error (object)
337 :expected-type '(simple-array (unsigned-byte 4) (*))))
339 (deferr object-not-simple-array-unsigned-byte-8-error (object)
343 :expected-type '(simple-array (unsigned-byte 8) (*))))
345 (deferr object-not-simple-array-unsigned-byte-16-error (object)
349 :expected-type '(simple-array (unsigned-byte 16) (*))))
351 (deferr object-not-simple-array-unsigned-byte-32-error (object)
355 :expected-type '(simple-array (unsigned-byte 32) (*))))
357 (deferr object-not-simple-array-signed-byte-8-error (object)
361 :expected-type '(simple-array (signed-byte 8) (*))))
363 (deferr object-not-simple-array-signed-byte-16-error (object)
367 :expected-type '(simple-array (signed-byte 16) (*))))
369 (deferr object-not-simple-array-signed-byte-30-error (object)
373 :expected-type '(simple-array (signed-byte 30) (*))))
375 (deferr object-not-simple-array-signed-byte-32-error (object)
379 :expected-type '(simple-array (signed-byte 32) (*))))
381 (deferr object-not-simple-array-single-float-error (object)
385 :expected-type '(simple-array single-float (*))))
387 (deferr object-not-simple-array-double-float-error (object)
391 :expected-type '(simple-array double-float (*))))
393 (deferr object-not-simple-array-complex-single-float-error (object)
397 :expected-type '(simple-array (complex single-float) (*))))
399 (deferr object-not-simple-array-complex-double-float-error (object)
403 :expected-type '(simple-array (complex double-float) (*))))
406 (deferr object-not-simple-array-complex-long-float-error (object)
410 :expected-type '(simple-array (complex long-float) (*))))
412 (deferr object-not-complex-error (object)
416 :expected-type 'complex))
418 (deferr object-not-complex-rational-error (object)
422 :expected-type '(complex rational)))
424 (deferr object-not-complex-single-float-error (object)
428 :expected-type '(complex single-float)))
430 (deferr object-not-complex-double-float-error (object)
434 :expected-type '(complex double-float)))
437 (deferr object-not-complex-long-float-error (object)
441 :expected-type '(complex long-float)))
443 (deferr object-not-weak-pointer-error (object)
447 :expected-type 'weak-pointer))
449 (deferr object-not-instance-error (object)
453 :expected-type 'instance))
455 (deferr object-not-complex-vector-error (object)
459 :expected-type '(and vector (not simple-array))))
461 ;;;; fetching errorful function name
463 ;;; This variable is used to prevent infinite recursive lossage when
464 ;;; we can't find the caller for some reason.
465 (defvar *finding-name* nil)
467 (defun find-caller-name ()
469 (values "<error finding caller name -- already finding name>" nil)
471 (let* ((*finding-name* t)
472 (frame (sb!di:frame-down (sb!di:frame-down (sb!di:top-frame))))
473 (name (sb!di:debug-function-name
474 (sb!di:frame-debug-function frame))))
475 (sb!di:flush-frames-above frame)
478 (values "<error finding caller name -- trapped error>" nil))
479 (sb!di:debug-condition ()
480 (values "<error finding caller name -- trapped debug-condition>"
483 (defun find-interrupted-name ()
485 (values "<error finding interrupted name -- already finding name>" nil)
487 (let ((*finding-name* t))
488 (do ((frame (sb!di:top-frame) (sb!di:frame-down frame)))
490 (values "<error finding interrupted name -- null frame>" nil))
491 (when (and (sb!di::compiled-frame-p frame)
492 (sb!di::compiled-frame-escaped frame))
493 (sb!di:flush-frames-above frame)
494 (return (values (sb!di:debug-function-name
495 (sb!di:frame-debug-function frame))
498 (values "<error finding interrupted name -- trapped error>" nil))
499 (sb!di:debug-condition ()
500 (values "<error finding interrupted name -- trapped debug-condition>"
503 ;;;; INTERNAL-ERROR signal handler
505 (defun internal-error (context continuable)
506 (declare (type system-area-pointer context) (ignore continuable))
507 (/show0 "entering INTERNAL-ERROR, CONTEXT=..")
509 (infinite-error-protect
510 (let ((context (locally
511 (declare (optimize (inhibit-warnings 3)))
512 (sb!alien:sap-alien context (* os-context-t)))))
513 (multiple-value-bind (error-number arguments)
514 (sb!vm:internal-error-arguments context)
515 (multiple-value-bind (name sb!debug:*stack-top-hint*)
516 (find-interrupted-name)
517 (let ((fp (int-sap (sb!vm:context-register context
519 (handler (and (< -1 error-number (length *internal-errors*))
520 (svref *internal-errors* error-number))))
521 (cond ((null handler)
525 "unknown internal error, ~D? args=~S"
528 (mapcar #'(lambda (sc-offset)
529 (sb!di::sub-access-debug-var-slot
530 fp sc-offset context))
532 ((not (functionp handler))
535 :format-control "internal error ~D: ~A; args=~S"
539 (mapcar #'(lambda (sc-offset)
540 (sb!di::sub-access-debug-var-slot
541 fp sc-offset context))
544 (funcall handler name fp context arguments)))))))))