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 (let (,@(let ((offset -1))
44 (mapcar #'(lambda (var)
45 `(,var (sb!di::sub-access-debug-var-slot
52 `((,(nth (1+ rest-pos) args)
53 (mapcar #'(lambda (sc-offset)
54 (sb!di::sub-access-debug-var-slot
58 (nthcdr ,rest-pos ,sc-offsets))))))
60 (setf (svref *internal-errors* ,(error-number-or-lose name))
65 (deferr unknown-error (&rest args)
66 (error "unknown error:~{ ~S~})" args))
68 (deferr object-not-function-error (object)
71 :expected-type 'function))
73 (deferr object-not-list-error (object)
76 :expected-type 'list))
78 (deferr object-not-bignum-error (object)
81 :expected-type 'bignum))
83 (deferr object-not-ratio-error (object)
86 :expected-type 'ratio))
88 (deferr object-not-single-float-error (object)
91 :expected-type 'single-float))
93 (deferr object-not-double-float-error (object)
96 :expected-type 'double-float))
99 (deferr object-not-long-float-error (object)
102 :expected-type 'long-float))
104 (deferr object-not-simple-string-error (object)
107 :expected-type 'simple-string))
109 (deferr object-not-simple-bit-vector-error (object)
112 :expected-type 'simple-bit-vector))
114 (deferr object-not-simple-vector-error (object)
117 :expected-type 'simple-vector))
119 (deferr object-not-fixnum-error (object)
122 :expected-type 'fixnum))
124 (deferr object-not-function-or-symbol-error (object)
127 :expected-type '(or function symbol)))
129 (deferr object-not-vector-error (object)
132 :expected-type 'vector))
134 (deferr object-not-string-error (object)
137 :expected-type 'string))
139 (deferr object-not-bit-vector-error (object)
142 :expected-type 'bit-vector))
144 (deferr object-not-array-error (object)
147 :expected-type 'array))
149 (deferr object-not-number-error (object)
152 :expected-type 'number))
154 (deferr object-not-rational-error (object)
157 :expected-type 'rational))
159 (deferr object-not-float-error (object)
162 :expected-type 'float))
164 (deferr object-not-real-error (object)
167 :expected-type 'real))
169 (deferr object-not-integer-error (object)
172 :expected-type 'integer))
174 (deferr object-not-cons-error (object)
177 :expected-type 'cons))
179 (deferr object-not-symbol-error (object)
182 :expected-type 'symbol))
184 (deferr undefined-symbol-error (fdefn-or-symbol)
185 (error 'undefined-function
186 :name (etypecase fdefn-or-symbol
187 (symbol fdefn-or-symbol)
188 (fdefn (fdefn-name fdefn-or-symbol)))))
190 (deferr object-not-coerceable-to-function-error (object)
193 :expected-type 'coerceable-to-function))
195 (deferr invalid-argument-count-error (nargs)
196 (error 'simple-program-error
197 :format-control "invalid number of arguments: ~S"
198 :format-arguments (list nargs)))
200 (deferr bogus-argument-to-values-list-error (list)
201 (error 'simple-type-error
205 "~@<attempt to use VALUES-LIST on a dotted list: ~2I~_~S~:>"
206 :format-arguments (list list)))
208 (deferr unbound-symbol-error (symbol)
209 (error 'unbound-variable :name symbol))
211 (deferr object-not-base-char-error (object)
214 :expected-type 'base-char))
216 (deferr object-not-sap-error (object)
219 :expected-type 'system-area-pointer))
221 (deferr invalid-unwind-error ()
222 (error 'simple-control-error
224 "attempt to RETURN-FROM a block or GO to a tag that no longer exists"
227 (deferr unseen-throw-tag-error (tag)
228 (error 'simple-control-error
229 :format-control "attempt to THROW to a tag that does not exist: ~S"
230 :format-arguments (list tag)))
232 (deferr nil-function-returned-error (function)
233 (error 'simple-control-error
235 "A function with declared result type NIL returned:~% ~S"
236 :format-arguments (list function)))
238 (deferr division-by-zero-error (this that)
239 (error 'division-by-zero
241 :operands (list this that)))
243 (deferr object-not-type-error (object type)
244 (error (if (and (typep object 'instance)
245 (layout-invalid (%instance-layout object)))
249 :expected-type type))
251 (deferr layout-invalid-error (object layout)
252 (error 'layout-invalid
254 :expected-type (layout-class layout)))
256 (deferr odd-key-arguments-error ()
257 (error 'simple-program-error
258 :format-control "odd number of &KEY arguments"))
260 (deferr unknown-key-argument-error (key-name)
261 (error 'simple-program-error
262 :format-control "unknown &KEY argument: ~S"
263 :format-arguments (list key-name)))
265 (deferr invalid-array-index-error (array bound index)
268 "invalid array index ~D for ~S (should be nonnegative and <~D)"
269 :format-arguments (list index array bound)))
271 (deferr object-not-simple-array-error (object)
274 :expected-type 'simple-array))
276 (deferr object-not-signed-byte-32-error (object)
279 :expected-type '(signed-byte 32)))
281 (deferr object-not-unsigned-byte-32-error (object)
284 :expected-type '(unsigned-byte 32)))
286 (deferr object-not-simple-array-unsigned-byte-2-error (object)
289 :expected-type '(simple-array (unsigned-byte 2) (*))))
291 (deferr object-not-simple-array-unsigned-byte-4-error (object)
294 :expected-type '(simple-array (unsigned-byte 4) (*))))
296 (deferr object-not-simple-array-unsigned-byte-8-error (object)
299 :expected-type '(simple-array (unsigned-byte 8) (*))))
301 (deferr object-not-simple-array-unsigned-byte-16-error (object)
304 :expected-type '(simple-array (unsigned-byte 16) (*))))
306 (deferr object-not-simple-array-unsigned-byte-32-error (object)
309 :expected-type '(simple-array (unsigned-byte 32) (*))))
311 (deferr object-not-simple-array-signed-byte-8-error (object)
314 :expected-type '(simple-array (signed-byte 8) (*))))
316 (deferr object-not-simple-array-signed-byte-16-error (object)
319 :expected-type '(simple-array (signed-byte 16) (*))))
321 (deferr object-not-simple-array-signed-byte-30-error (object)
324 :expected-type '(simple-array (signed-byte 30) (*))))
326 (deferr object-not-simple-array-signed-byte-32-error (object)
329 :expected-type '(simple-array (signed-byte 32) (*))))
331 (deferr object-not-simple-array-single-float-error (object)
334 :expected-type '(simple-array single-float (*))))
336 (deferr object-not-simple-array-double-float-error (object)
339 :expected-type '(simple-array double-float (*))))
341 (deferr object-not-simple-array-complex-single-float-error (object)
344 :expected-type '(simple-array (complex single-float) (*))))
346 (deferr object-not-simple-array-complex-double-float-error (object)
349 :expected-type '(simple-array (complex double-float) (*))))
352 (deferr object-not-simple-array-complex-long-float-error (object)
355 :expected-type '(simple-array (complex long-float) (*))))
357 (deferr object-not-complex-error (object)
360 :expected-type 'complex))
362 (deferr object-not-complex-rational-error (object)
365 :expected-type '(complex rational)))
367 (deferr object-not-complex-single-float-error (object)
370 :expected-type '(complex single-float)))
372 (deferr object-not-complex-double-float-error (object)
375 :expected-type '(complex double-float)))
378 (deferr object-not-complex-long-float-error (object)
381 :expected-type '(complex long-float)))
383 (deferr object-not-weak-pointer-error (object)
386 :expected-type 'weak-pointer))
388 (deferr object-not-instance-error (object)
391 :expected-type 'instance))
393 (deferr object-not-complex-vector-error (object)
396 :expected-type '(and vector (not simple-array))))
398 ;;;; fetching errorful function name
400 ;;; This flag is used to prevent infinite recursive lossage when
401 ;;; we can't find the caller for some reason.
402 (defvar *finding-name* nil)
404 (defun find-caller-name-and-frame ()
406 (values "<error finding caller name -- already finding name>" nil)
408 (let* ((*finding-name* t)
409 (frame (sb!di:frame-down (sb!di:frame-down (sb!di:top-frame))))
410 (name (sb!di:debug-function-name
411 (sb!di:frame-debug-function frame))))
412 (sb!di:flush-frames-above frame)
415 (values "<error finding caller name -- trapped error>" nil))
416 (sb!di:debug-condition ()
417 (values "<error finding caller name -- trapped debug-condition>"
420 (defun find-interrupted-name ()
422 (values "<error finding interrupted name -- already finding name>" nil)
424 (let ((*finding-name* t))
425 (do ((frame (sb!di:top-frame) (sb!di:frame-down frame)))
427 (values "<error finding interrupted name -- null frame>" nil))
428 (when (and (sb!di::compiled-frame-p frame)
429 (sb!di::compiled-frame-escaped frame))
430 (sb!di:flush-frames-above frame)
431 (return (values (sb!di:debug-function-name
432 (sb!di:frame-debug-function frame))
435 (values "<error finding interrupted name -- trapped error>" nil))
436 (sb!di:debug-condition ()
437 (values "<error finding interrupted name -- trapped debug-condition>"
440 ;;;; INTERNAL-ERROR signal handler
442 (defun internal-error (context continuable)
443 (declare (type system-area-pointer context) (ignore continuable))
444 (/show0 "entering INTERNAL-ERROR, CONTEXT=..")
446 (infinite-error-protect
447 (let ((context (locally
448 (declare (optimize (inhibit-warnings 3)))
449 (sb!alien:sap-alien context (* os-context-t)))))
450 (multiple-value-bind (error-number arguments)
451 (sb!vm:internal-error-arguments context)
452 (multiple-value-bind (name sb!debug:*stack-top-hint*)
453 (find-interrupted-name)
454 (let ((fp (int-sap (sb!vm:context-register context
456 (handler (and (< -1 error-number (length *internal-errors*))
457 (svref *internal-errors* error-number))))
458 (cond ((null handler)
461 "unknown internal error, ~D? args=~S"
464 (mapcar #'(lambda (sc-offset)
465 (sb!di::sub-access-debug-var-slot
466 fp sc-offset context))
468 ((not (functionp handler))
470 :format-control "internal error ~D: ~A; args=~S"
474 (mapcar #'(lambda (sc-offset)
475 (sb!di::sub-access-debug-var-slot
476 fp sc-offset context))
479 (funcall handler name fp context arguments)))))))))