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")
20 (defvar *internal-errors*
21 #.(map 'vector #'cdr sb!c:*backend-internal-errors*))
23 (eval-when (:compile-toplevel :execute)
25 (sb!xc:defmacro deferr (name args &rest body)
26 (let* ((rest-pos (position '&rest args))
27 (required (if rest-pos (subseq args 0 rest-pos) args))
32 (fn-name (symbolicate name "-HANDLER")))
34 ;; FIXME: Having a separate full DEFUN for each error doesn't
35 ;; seem to add much value, and it takes a lot of space. Perhaps
36 ;; we could make this a big CASE statement instead?
37 (defun ,fn-name (name ,fp ,context ,sc-offsets)
38 ;; FIXME: Perhaps put in OPTIMIZE declaration to make this
41 ;; FIXME: It would probably be good to do *STACK-TOP-HINT*
42 ;; tricks to hide this internal error-handling logic from the
43 ;; poor high level user, so his debugger tells him about
44 ;; where his error was detected instead of telling him where
45 ;; he ended up inside the system error-handling logic.
46 (declare (ignorable name ,fp ,context ,sc-offsets))
47 (macrolet ((set-value (var value)
48 (let ((pos (position var ',required)))
50 (error "~S isn't one of the required args." var))
51 `(let ((,',temp ,value))
52 (sb!di::sub-set-debug-var-slot
53 ,',fp (nth ,pos ,',sc-offsets)
55 (setf ,var ,',temp)))))
56 (let (,@(let ((offset -1))
57 (mapcar #'(lambda (var)
58 `(,var (sb!di::sub-access-debug-var-slot
65 `((,(nth (1+ rest-pos) args)
66 (mapcar #'(lambda (sc-offset)
67 (sb!di::sub-access-debug-var-slot
71 (nthcdr ,rest-pos ,sc-offsets))))))
73 (setf (svref *internal-errors* ,(error-number-or-lose name))
78 (deferr unknown-error (&rest args)
79 (error "unknown error:~{ ~S~})" args))
81 (deferr object-not-function-error (object)
85 :expected-type 'function))
87 (deferr object-not-list-error (object)
91 :expected-type 'list))
93 (deferr object-not-bignum-error (object)
97 :expected-type 'bignum))
99 (deferr object-not-ratio-error (object)
103 :expected-type 'ratio))
105 (deferr object-not-single-float-error (object)
109 :expected-type 'single-float))
111 (deferr object-not-double-float-error (object)
115 :expected-type 'double-float))
118 (deferr object-not-long-float-error (object)
122 :expected-type 'long-float))
124 (deferr object-not-simple-string-error (object)
128 :expected-type 'simple-string))
130 (deferr object-not-simple-bit-vector-error (object)
134 :expected-type 'simple-bit-vector))
136 (deferr object-not-simple-vector-error (object)
140 :expected-type 'simple-vector))
142 (deferr object-not-fixnum-error (object)
146 :expected-type 'fixnum))
148 (deferr object-not-function-or-symbol-error (object)
152 :expected-type '(or function symbol)))
154 (deferr object-not-vector-error (object)
158 :expected-type 'vector))
160 (deferr object-not-string-error (object)
164 :expected-type 'string))
166 (deferr object-not-bit-vector-error (object)
170 :expected-type 'bit-vector))
172 (deferr object-not-array-error (object)
176 :expected-type 'array))
178 (deferr object-not-number-error (object)
182 :expected-type 'number))
184 (deferr object-not-rational-error (object)
188 :expected-type 'rational))
190 (deferr object-not-float-error (object)
194 :expected-type 'float))
196 (deferr object-not-real-error (object)
200 :expected-type 'real))
202 (deferr object-not-integer-error (object)
206 :expected-type 'integer))
208 (deferr object-not-cons-error (object)
212 :expected-type 'cons))
214 (deferr object-not-symbol-error (object)
218 :expected-type 'symbol))
220 (deferr undefined-symbol-error (fdefn-or-symbol)
221 (error 'undefined-function
223 :name (etypecase fdefn-or-symbol
224 (symbol fdefn-or-symbol)
225 (fdefn (fdefn-name fdefn-or-symbol)))))
227 (deferr object-not-coerceable-to-function-error (object)
231 :expected-type 'coerceable-to-function))
233 (deferr invalid-argument-count-error (nargs)
234 (error 'simple-program-error
236 :format-control "invalid number of arguments: ~S"
237 :format-arguments (list nargs)))
239 (deferr bogus-argument-to-values-list-error (list)
242 :format-control "attempt to use VALUES-LIST on a dotted-list:~% ~S"
243 :format-arguments (list list)))
245 (deferr unbound-symbol-error (symbol)
246 (error 'unbound-variable :function-name name :name symbol))
248 (deferr object-not-base-char-error (object)
252 :expected-type 'base-char))
254 (deferr object-not-sap-error (object)
258 :expected-type 'system-area-pointer))
260 (deferr invalid-unwind-error ()
261 (error 'simple-control-error
264 "attempt to RETURN-FROM a block or GO to a tag that no longer exists"))
266 (deferr unseen-throw-tag-error (tag)
267 (error 'simple-control-error
269 :format-control "attempt to THROW to a tag that does not exist: ~S"
270 :format-arguments (list tag)))
272 (deferr nil-function-returned-error (function)
273 (error 'simple-control-error
276 "A function with declared result type NIL returned:~% ~S"
277 :format-arguments (list function)))
279 (deferr division-by-zero-error (this that)
280 (error 'division-by-zero
283 :operands (list this that)))
285 (deferr object-not-type-error (object type)
286 (error (if (and (typep object 'instance)
287 (layout-invalid (%instance-layout object)))
292 :expected-type type))
294 (deferr layout-invalid-error (object layout)
295 (error 'layout-invalid
298 :expected-type (layout-class layout)))
300 (deferr odd-keyword-arguments-error ()
301 (error 'simple-program-error
303 :format-control "odd number of keyword arguments"))
305 (deferr unknown-keyword-argument-error (key)
306 (error 'simple-program-error
308 :format-control "unknown keyword: ~S"
309 :format-arguments (list key)))
311 (deferr invalid-array-index-error (array bound index)
315 "invalid array index, ~D for ~S (should have been less than ~D)"
316 :format-arguments (list index array bound)))
318 (deferr object-not-simple-array-error (object)
322 :expected-type 'simple-array))
324 (deferr object-not-signed-byte-32-error (object)
328 :expected-type '(signed-byte 32)))
330 (deferr object-not-unsigned-byte-32-error (object)
334 :expected-type '(unsigned-byte 32)))
336 (deferr object-not-simple-array-unsigned-byte-2-error (object)
340 :expected-type '(simple-array (unsigned-byte 2) (*))))
342 (deferr object-not-simple-array-unsigned-byte-4-error (object)
346 :expected-type '(simple-array (unsigned-byte 4) (*))))
348 (deferr object-not-simple-array-unsigned-byte-8-error (object)
352 :expected-type '(simple-array (unsigned-byte 8) (*))))
354 (deferr object-not-simple-array-unsigned-byte-16-error (object)
358 :expected-type '(simple-array (unsigned-byte 16) (*))))
360 (deferr object-not-simple-array-unsigned-byte-32-error (object)
364 :expected-type '(simple-array (unsigned-byte 32) (*))))
366 (deferr object-not-simple-array-signed-byte-8-error (object)
370 :expected-type '(simple-array (signed-byte 8) (*))))
372 (deferr object-not-simple-array-signed-byte-16-error (object)
376 :expected-type '(simple-array (signed-byte 16) (*))))
378 (deferr object-not-simple-array-signed-byte-30-error (object)
382 :expected-type '(simple-array (signed-byte 30) (*))))
384 (deferr object-not-simple-array-signed-byte-32-error (object)
388 :expected-type '(simple-array (signed-byte 32) (*))))
390 (deferr object-not-simple-array-single-float-error (object)
394 :expected-type '(simple-array single-float (*))))
396 (deferr object-not-simple-array-double-float-error (object)
400 :expected-type '(simple-array double-float (*))))
402 (deferr object-not-simple-array-complex-single-float-error (object)
406 :expected-type '(simple-array (complex single-float) (*))))
408 (deferr object-not-simple-array-complex-double-float-error (object)
412 :expected-type '(simple-array (complex double-float) (*))))
415 (deferr object-not-simple-array-complex-long-float-error (object)
419 :expected-type '(simple-array (complex long-float) (*))))
421 (deferr object-not-complex-error (object)
425 :expected-type 'complex))
427 (deferr object-not-complex-rational-error (object)
431 :expected-type '(complex rational)))
433 (deferr object-not-complex-single-float-error (object)
437 :expected-type '(complex single-float)))
439 (deferr object-not-complex-double-float-error (object)
443 :expected-type '(complex double-float)))
446 (deferr object-not-complex-long-float-error (object)
450 :expected-type '(complex long-float)))
452 (deferr object-not-weak-pointer-error (object)
456 :expected-type 'weak-pointer))
458 (deferr object-not-instance-error (object)
462 :expected-type 'instance))
464 ;;;; fetching errorful function name
466 ;;; This variable is used to prevent infinite recursive lossage when
467 ;;; we can't find the caller for some reason.
468 (defvar *finding-name* nil)
470 (defun find-caller-name ()
472 (values "<error finding caller name -- already finding name>" nil)
474 (let* ((*finding-name* t)
475 (frame (sb!di:frame-down (sb!di:frame-down (sb!di:top-frame))))
476 (name (sb!di:debug-function-name
477 (sb!di:frame-debug-function frame))))
478 (sb!di:flush-frames-above frame)
481 (values "<error finding caller name -- trapped error>" nil))
482 (sb!di:debug-condition ()
483 (values "<error finding caller name -- trapped debug-condition>"
486 (defun find-interrupted-name ()
488 (values "<error finding interrupted name -- already finding name>" nil)
490 (let ((*finding-name* t))
491 (do ((frame (sb!di:top-frame) (sb!di:frame-down frame)))
493 (values "<error finding interrupted name -- null frame>" nil))
494 (when (and (sb!di::compiled-frame-p frame)
495 (sb!di::compiled-frame-escaped frame))
496 (sb!di:flush-frames-above frame)
497 (return (values (sb!di:debug-function-name
498 (sb!di:frame-debug-function frame))
501 (values "<error finding interrupted name -- trapped error>" nil))
502 (sb!di:debug-condition ()
503 (values "<error finding interrupted name -- trapped debug-condition>"
506 ;;;; INTERNAL-ERROR signal handler
508 (defun internal-error (context continuable)
509 (declare (type system-area-pointer context) (ignore continuable))
510 (infinite-error-protect
511 (let ((context (locally
512 (declare (optimize (inhibit-warnings 3)))
513 (sb!alien:sap-alien context (* os-context-t)))))
514 (multiple-value-bind (error-number arguments)
515 (sb!vm:internal-error-arguments context)
516 (multiple-value-bind (name sb!debug:*stack-top-hint*)
517 (find-interrupted-name)
518 (let ((fp (int-sap (sb!vm:context-register context
520 (handler (and (< -1 error-number (length *internal-errors*))
521 (svref *internal-errors* error-number))))
522 (cond ((null handler)
526 "unknown internal error, ~D? args=~S"
529 (mapcar #'(lambda (sc-offset)
530 (sb!di::sub-access-debug-var-slot
531 fp sc-offset context))
533 ((not (functionp handler))
537 "internal error ~D: ~A; args=~S"
541 (mapcar #'(lambda (sc-offset)
542 (sb!di::sub-access-debug-var-slot
543 fp sc-offset context))
546 (funcall handler name fp context arguments)))))))))