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2011-05-31 Gabriel Charette <gchare@google.com>
[official-gcc.git] / gcc / ada / a-except.adb
blobe80e264fe0fd9640d6c0f2ee3e06b4525f45226a
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- A D A . E X C E P T I O N S --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2010, Free Software Foundation, Inc. --
10 -- --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
17 -- --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
29 -- --
30 ------------------------------------------------------------------------------
31
32 -- This version of Ada.Exceptions is a full Ada 95 version, and Ada 2005
33 -- features such as the additional definitions of Exception_Name returning
34 -- Wide_[Wide_]String.
35
36 -- It is used for building the compiler and the basic tools, since these
37 -- builds may be done with bootstrap compilers that cannot handle these
38 -- additions. The full version of Ada.Exceptions can be found in the files
39 -- a-except-2005.ads/adb, and is used for all other builds where full Ada
40 -- 2005 functionality is required. In particular, it is used for building
41 -- run times on all targets.
42
43 pragma Compiler_Unit;
44
45 pragma Style_Checks (All_Checks);
46 -- No subprogram ordering check, due to logical grouping
47
48 pragma Polling (Off);
49 -- We must turn polling off for this unit, because otherwise we get
50 -- elaboration circularities with System.Exception_Tables.
51
52 with System; use System;
53 with System.Exceptions; use System.Exceptions;
54 with System.Standard_Library; use System.Standard_Library;
55 with System.Soft_Links; use System.Soft_Links;
56
57 package body Ada.Exceptions is
58
59 pragma Suppress (All_Checks);
60 -- We definitely do not want exceptions occurring within this unit, or we
61 -- are in big trouble. If an exceptional situation does occur, better that
62 -- it not be raised, since raising it can cause confusing chaos.
63
64 -----------------------
65 -- Local Subprograms --
66 -----------------------
67
68 -- Note: the exported subprograms in this package body are called directly
69 -- from C clients using the given external name, even though they are not
70 -- technically visible in the Ada sense.
71
72 procedure Process_Raise_Exception (E : Exception_Id);
73 pragma No_Return (Process_Raise_Exception);
74 -- This is the lowest level raise routine. It raises the exception
75 -- referenced by Current_Excep.all in the TSD, without deferring abort
76 -- (the caller must ensure that abort is deferred on entry).
77
78 procedure To_Stderr (S : String);
79 pragma Export (Ada, To_Stderr, "__gnat_to_stderr");
80 -- Little routine to output string to stderr that is also used in the
81 -- tasking run time.
82
83 procedure To_Stderr (C : Character);
84 pragma Inline (To_Stderr);
85 pragma Export (Ada, To_Stderr, "__gnat_to_stderr_char");
86 -- Little routine to output a character to stderr, used by some of the
87 -- separate units below.
88
89 package Exception_Data is
90
91 ---------------------------------
92 -- Exception messages routines --
93 ---------------------------------
94
95 procedure Set_Exception_C_Msg
96 (Id : Exception_Id;
97 Msg1 : System.Address;
98 Line : Integer := 0;
99 Column : Integer := 0;
100 Msg2 : System.Address := System.Null_Address);
101 -- This routine is called to setup the exception referenced by the
102 -- Current_Excep field in the TSD to contain the indicated Id value
103 -- and message. Msg1 is a null terminated string which is generated
104 -- as the exception message. If line is non-zero, then a colon and
105 -- the decimal representation of this integer is appended to the
106 -- message. Ditto for Column. When Msg2 is non-null, a space and this
107 -- additional null terminated string is added to the message.
108
109 procedure Set_Exception_Msg
110 (Id : Exception_Id;
111 Message : String);
112 -- This routine is called to setup the exception referenced by the
113 -- Current_Excep field in the TSD to contain the indicated Id value and
114 -- message. Message is a string which is generated as the exception
115 -- message.
116
117 --------------------------------------
118 -- Exception information subprogram --
119 --------------------------------------
120
121 function Exception_Information (X : Exception_Occurrence) return String;
122 -- The format of the exception information is as follows:
123 --
124 -- Exception_Name: <exception name> (as in Exception_Name)
125 -- Message: <message> (only if Exception_Message is empty)
126 -- PID=nnnn (only if != 0)
127 -- Call stack traceback locations: (only if at least one location)
128 -- <0xyyyyyyyy 0xyyyyyyyy ...> (is recorded)
129 --
130 -- The lines are separated by a ASCII.LF character
131 --
132 -- The nnnn is the partition Id given as decimal digits
133 --
134 -- The 0x... line represents traceback program counter locations, in
135 -- execution order with the first one being the exception location. It
136 -- is present only
137 --
138 -- The Exception_Name and Message lines are omitted in the abort signal
139 -- case, since this is not really an exception.
140
141 -- Note: If the format of the generated string is changed, please note
142 -- that an equivalent modification to the routine String_To_EO must be
143 -- made to preserve proper functioning of the stream attributes.
144
145 ---------------------------------------
146 -- Exception backtracing subprograms --
147 ---------------------------------------
148
149 -- What is automatically output when exception tracing is on is the
150 -- usual exception information with the call chain backtrace possibly
151 -- tailored by a backtrace decorator. Modifying Exception_Information
152 -- itself is not a good idea because the decorated output is completely
153 -- out of control and would break all our code related to the streaming
154 -- of exceptions. We then provide an alternative function to compute
155 -- the possibly tailored output, which is equivalent if no decorator is
156 -- currently set:
157
158 function Tailored_Exception_Information
159 (X : Exception_Occurrence) return String;
160 -- Exception information to be output in the case of automatic tracing
161 -- requested through GNAT.Exception_Traces.
162 --
163 -- This is the same as Exception_Information if no backtrace decorator
164 -- is currently in place. Otherwise, this is Exception_Information with
165 -- the call chain raw addresses replaced by the result of a call to the
166 -- current decorator provided with the call chain addresses.
167
168 pragma Export
169 (Ada, Tailored_Exception_Information,
170 "__gnat_tailored_exception_information");
171 -- This is currently used by System.Tasking.Stages
172
173 end Exception_Data;
174
175 package Exception_Traces is
176
177 use Exception_Data;
178 -- Imports Tailored_Exception_Information
179
180 ----------------------------------------------
181 -- Run-Time Exception Notification Routines --
182 ----------------------------------------------
183
184 -- These subprograms provide a common run-time interface to trigger the
185 -- actions required when an exception is about to be propagated (e.g.
186 -- user specified actions or output of exception information). They are
187 -- exported to be usable by the Ada exception handling personality
188 -- routine when the GCC 3 mechanism is used.
189
190 procedure Notify_Handled_Exception;
191 pragma Export
192 (C, Notify_Handled_Exception, "__gnat_notify_handled_exception");
193 -- This routine is called for a handled occurrence is about to be
194 -- propagated.
195
196 procedure Notify_Unhandled_Exception;
197 pragma Export
198 (C, Notify_Unhandled_Exception, "__gnat_notify_unhandled_exception");
199 -- This routine is called when an unhandled occurrence is about to be
200 -- propagated.
201
202 procedure Unhandled_Exception_Terminate;
203 pragma No_Return (Unhandled_Exception_Terminate);
204 -- This procedure is called to terminate program execution following an
205 -- unhandled exception. The exception information, including traceback
206 -- if available is output, and execution is then terminated. Note that
207 -- at the point where this routine is called, the stack has typically
208 -- been destroyed.
209
210 end Exception_Traces;
211
212 package Exception_Propagation is
213
214 procedure Setup_Exception
215 (Excep : EOA;
216 Current : EOA;
217 Reraised : Boolean := False);
218 -- Dummy routine used to share a-exexda.adb, do nothing
219
220 end Exception_Propagation;
221
222 package Stream_Attributes is
223
224 --------------------------------
225 -- Stream attributes routines --
226 --------------------------------
227
228 function EId_To_String (X : Exception_Id) return String;
229 function String_To_EId (S : String) return Exception_Id;
230 -- Functions for implementing Exception_Id stream attributes
231
232 function EO_To_String (X : Exception_Occurrence) return String;
233 function String_To_EO (S : String) return Exception_Occurrence;
234 -- Functions for implementing Exception_Occurrence stream
235 -- attributes
236
237 end Stream_Attributes;
238
239 procedure Raise_Current_Excep (E : Exception_Id);
240 pragma No_Return (Raise_Current_Excep);
241 pragma Export (C, Raise_Current_Excep, "__gnat_raise_nodefer_with_msg");
242 -- This is a simple wrapper to Process_Raise_Exception.
243 --
244 -- This external name for Raise_Current_Excep is historical, and probably
245 -- should be changed but for now we keep it, because gdb and gigi know
246 -- about it.
247
248 procedure Raise_Exception_No_Defer
249 (E : Exception_Id; Message : String := "");
250 pragma Export
251 (Ada, Raise_Exception_No_Defer,
252 "ada__exceptions__raise_exception_no_defer");
253 pragma No_Return (Raise_Exception_No_Defer);
254 -- Similar to Raise_Exception, but with no abort deferral
255
256 procedure Raise_With_Msg (E : Exception_Id);
257 pragma No_Return (Raise_With_Msg);
258 pragma Export (C, Raise_With_Msg, "__gnat_raise_with_msg");
259 -- Raises an exception with given exception id value. A message is
260 -- associated with the raise, and has already been stored in the exception
261 -- occurrence referenced by the Current_Excep in the TSD. Abort is deferred
262 -- before the raise call.
263
264 procedure Raise_With_Location_And_Msg
265 (E : Exception_Id;
266 F : System.Address;
267 L : Integer;
268 M : System.Address := System.Null_Address);
269 pragma No_Return (Raise_With_Location_And_Msg);
270 -- Raise an exception with given exception id value. A filename and line
271 -- number is associated with the raise and is stored in the exception
272 -- occurrence and in addition a string message M is appended to this
273 -- if M is not null.
274
275 procedure Raise_Constraint_Error
276 (File : System.Address;
277 Line : Integer);
278 pragma No_Return (Raise_Constraint_Error);
279 pragma Export
280 (C, Raise_Constraint_Error, "__gnat_raise_constraint_error");
281 -- Raise constraint error with file:line information
282
283 procedure Raise_Constraint_Error_Msg
284 (File : System.Address;
285 Line : Integer;
286 Msg : System.Address);
287 pragma No_Return (Raise_Constraint_Error_Msg);
288 pragma Export
289 (C, Raise_Constraint_Error_Msg, "__gnat_raise_constraint_error_msg");
290 -- Raise constraint error with file:line + msg information
291
292 procedure Raise_Program_Error
293 (File : System.Address;
294 Line : Integer);
295 pragma No_Return (Raise_Program_Error);
296 pragma Export
297 (C, Raise_Program_Error, "__gnat_raise_program_error");
298 -- Raise program error with file:line information
299
300 procedure Raise_Program_Error_Msg
301 (File : System.Address;
302 Line : Integer;
303 Msg : System.Address);
304 pragma No_Return (Raise_Program_Error_Msg);
305 pragma Export
306 (C, Raise_Program_Error_Msg, "__gnat_raise_program_error_msg");
307 -- Raise program error with file:line + msg information
308
309 procedure Raise_Storage_Error
310 (File : System.Address;
311 Line : Integer);
312 pragma No_Return (Raise_Storage_Error);
313 pragma Export
314 (C, Raise_Storage_Error, "__gnat_raise_storage_error");
315 -- Raise storage error with file:line information
316
317 procedure Raise_Storage_Error_Msg
318 (File : System.Address;
319 Line : Integer;
320 Msg : System.Address);
321 pragma No_Return (Raise_Storage_Error_Msg);
322 pragma Export
323 (C, Raise_Storage_Error_Msg, "__gnat_raise_storage_error_msg");
324 -- Raise storage error with file:line + reason msg information
325
326 -- The exception raising process and the automatic tracing mechanism rely
327 -- on some careful use of flags attached to the exception occurrence. The
328 -- graph below illustrates the relations between the Raise_ subprograms
329 -- and identifies the points where basic flags such as Exception_Raised
330 -- are initialized.
331 --
332 -- (i) signs indicate the flags initialization points. R stands for Raise,
333 -- W for With, and E for Exception.
334 --
335 -- R_No_Msg R_E R_Pe R_Ce R_Se
336 -- | | | | |
337 -- +--+ +--+ +---+ | +---+
338 -- | | | | |
339 -- R_E_No_Defer(i) R_W_Msg(i) R_W_Loc
340 -- | | | |
341 -- +------------+ | +-----------+ +--+
342 -- | | | |
343 -- | | | Set_E_C_Msg(i)
344 -- | | |
345 -- Raise_Current_Excep
346
347 procedure Reraise;
348 pragma No_Return (Reraise);
349 pragma Export (C, Reraise, "__gnat_reraise");
350 -- Reraises the exception referenced by the Current_Excep field of the TSD
351 -- (all fields of this exception occurrence are set). Abort is deferred
352 -- before the reraise operation.
353
354 -- Save_Occurrence variations: As the management of the private data
355 -- attached to occurrences is delicate, whether or not pointers to such
356 -- data has to be copied in various situations is better made explicit.
357 -- The following procedures provide an internal interface to help making
358 -- this explicit.
359
360 procedure Save_Occurrence_No_Private
361 (Target : out Exception_Occurrence;
362 Source : Exception_Occurrence);
363 -- Copy all the components of Source to Target, except the
364 -- Private_Data pointer.
365
366 procedure Transfer_Occurrence
367 (Target : Exception_Occurrence_Access;
368 Source : Exception_Occurrence);
369 pragma Export (C, Transfer_Occurrence, "__gnat_transfer_occurrence");
370 -- Called from System.Tasking.RendezVous.Exceptional_Complete_RendezVous
371 -- to setup Target from Source as an exception to be propagated in the
372 -- caller task. Target is expected to be a pointer to the fixed TSD
373 -- occurrence for this task.
374
375 -----------------------------
376 -- Run-Time Check Routines --
377 -----------------------------
378
379 -- Routines to a specific exception with a reason message attached. The
380 -- parameters are the file name and line number in each case. The names are
381 -- keyed to the codes defined in types.ads and a-types.h (for example, the
382 -- name Rcheck_05 refers to the Reason RT_Exception_Code'Val (5)).
383
384 procedure Rcheck_00 (File : System.Address; Line : Integer);
385 procedure Rcheck_01 (File : System.Address; Line : Integer);
386 procedure Rcheck_02 (File : System.Address; Line : Integer);
387 procedure Rcheck_03 (File : System.Address; Line : Integer);
388 procedure Rcheck_04 (File : System.Address; Line : Integer);
389 procedure Rcheck_05 (File : System.Address; Line : Integer);
390 procedure Rcheck_06 (File : System.Address; Line : Integer);
391 procedure Rcheck_07 (File : System.Address; Line : Integer);
392 procedure Rcheck_08 (File : System.Address; Line : Integer);
393 procedure Rcheck_09 (File : System.Address; Line : Integer);
394 procedure Rcheck_10 (File : System.Address; Line : Integer);
395 procedure Rcheck_11 (File : System.Address; Line : Integer);
396 procedure Rcheck_12 (File : System.Address; Line : Integer);
397 procedure Rcheck_13 (File : System.Address; Line : Integer);
398 procedure Rcheck_14 (File : System.Address; Line : Integer);
399 procedure Rcheck_15 (File : System.Address; Line : Integer);
400 procedure Rcheck_16 (File : System.Address; Line : Integer);
401 procedure Rcheck_17 (File : System.Address; Line : Integer);
402 procedure Rcheck_18 (File : System.Address; Line : Integer);
403 procedure Rcheck_19 (File : System.Address; Line : Integer);
404 procedure Rcheck_20 (File : System.Address; Line : Integer);
405 procedure Rcheck_21 (File : System.Address; Line : Integer);
406 procedure Rcheck_22 (File : System.Address; Line : Integer);
407 procedure Rcheck_23 (File : System.Address; Line : Integer);
408 procedure Rcheck_24 (File : System.Address; Line : Integer);
409 procedure Rcheck_25 (File : System.Address; Line : Integer);
410 procedure Rcheck_26 (File : System.Address; Line : Integer);
411 procedure Rcheck_27 (File : System.Address; Line : Integer);
412 procedure Rcheck_28 (File : System.Address; Line : Integer);
413 procedure Rcheck_29 (File : System.Address; Line : Integer);
414 procedure Rcheck_30 (File : System.Address; Line : Integer);
415 procedure Rcheck_31 (File : System.Address; Line : Integer);
416 procedure Rcheck_32 (File : System.Address; Line : Integer);
417 procedure Rcheck_33 (File : System.Address; Line : Integer);
418 procedure Rcheck_34 (File : System.Address; Line : Integer);
419
420 pragma Export (C, Rcheck_00, "__gnat_rcheck_00");
421 pragma Export (C, Rcheck_01, "__gnat_rcheck_01");
422 pragma Export (C, Rcheck_02, "__gnat_rcheck_02");
423 pragma Export (C, Rcheck_03, "__gnat_rcheck_03");
424 pragma Export (C, Rcheck_04, "__gnat_rcheck_04");
425 pragma Export (C, Rcheck_05, "__gnat_rcheck_05");
426 pragma Export (C, Rcheck_06, "__gnat_rcheck_06");
427 pragma Export (C, Rcheck_07, "__gnat_rcheck_07");
428 pragma Export (C, Rcheck_08, "__gnat_rcheck_08");
429 pragma Export (C, Rcheck_09, "__gnat_rcheck_09");
430 pragma Export (C, Rcheck_10, "__gnat_rcheck_10");
431 pragma Export (C, Rcheck_11, "__gnat_rcheck_11");
432 pragma Export (C, Rcheck_12, "__gnat_rcheck_12");
433 pragma Export (C, Rcheck_13, "__gnat_rcheck_13");
434 pragma Export (C, Rcheck_14, "__gnat_rcheck_14");
435 pragma Export (C, Rcheck_15, "__gnat_rcheck_15");
436 pragma Export (C, Rcheck_16, "__gnat_rcheck_16");
437 pragma Export (C, Rcheck_17, "__gnat_rcheck_17");
438 pragma Export (C, Rcheck_18, "__gnat_rcheck_18");
439 pragma Export (C, Rcheck_19, "__gnat_rcheck_19");
440 pragma Export (C, Rcheck_20, "__gnat_rcheck_20");
441 pragma Export (C, Rcheck_21, "__gnat_rcheck_21");
442 pragma Export (C, Rcheck_22, "__gnat_rcheck_22");
443 pragma Export (C, Rcheck_23, "__gnat_rcheck_23");
444 pragma Export (C, Rcheck_24, "__gnat_rcheck_24");
445 pragma Export (C, Rcheck_25, "__gnat_rcheck_25");
446 pragma Export (C, Rcheck_26, "__gnat_rcheck_26");
447 pragma Export (C, Rcheck_27, "__gnat_rcheck_27");
448 pragma Export (C, Rcheck_28, "__gnat_rcheck_28");
449 pragma Export (C, Rcheck_29, "__gnat_rcheck_29");
450 pragma Export (C, Rcheck_30, "__gnat_rcheck_30");
451 pragma Export (C, Rcheck_31, "__gnat_rcheck_31");
452 pragma Export (C, Rcheck_32, "__gnat_rcheck_32");
453 pragma Export (C, Rcheck_33, "__gnat_rcheck_33");
454 pragma Export (C, Rcheck_34, "__gnat_rcheck_34");
455
456 -- None of these procedures ever returns (they raise an exception!). By
457 -- using pragma No_Return, we ensure that any junk code after the call,
458 -- such as normal return epilog stuff, can be eliminated).
459
460 pragma No_Return (Rcheck_00);
461 pragma No_Return (Rcheck_01);
462 pragma No_Return (Rcheck_02);
463 pragma No_Return (Rcheck_03);
464 pragma No_Return (Rcheck_04);
465 pragma No_Return (Rcheck_05);
466 pragma No_Return (Rcheck_06);
467 pragma No_Return (Rcheck_07);
468 pragma No_Return (Rcheck_08);
469 pragma No_Return (Rcheck_09);
470 pragma No_Return (Rcheck_10);
471 pragma No_Return (Rcheck_11);
472 pragma No_Return (Rcheck_12);
473 pragma No_Return (Rcheck_13);
474 pragma No_Return (Rcheck_14);
475 pragma No_Return (Rcheck_15);
476 pragma No_Return (Rcheck_16);
477 pragma No_Return (Rcheck_17);
478 pragma No_Return (Rcheck_18);
479 pragma No_Return (Rcheck_19);
480 pragma No_Return (Rcheck_20);
481 pragma No_Return (Rcheck_21);
482 pragma No_Return (Rcheck_22);
483 pragma No_Return (Rcheck_23);
484 pragma No_Return (Rcheck_24);
485 pragma No_Return (Rcheck_25);
486 pragma No_Return (Rcheck_26);
487 pragma No_Return (Rcheck_27);
488 pragma No_Return (Rcheck_28);
489 pragma No_Return (Rcheck_29);
490 pragma No_Return (Rcheck_30);
491 pragma No_Return (Rcheck_32);
492 pragma No_Return (Rcheck_33);
493 pragma No_Return (Rcheck_34);
494
495 ---------------------------------------------
496 -- Reason Strings for Run-Time Check Calls --
497 ---------------------------------------------
498
499 -- These strings are null-terminated and are used by Rcheck_nn. The
500 -- strings correspond to the definitions for Types.RT_Exception_Code.
501
502 use ASCII;
503
504 Rmsg_00 : constant String := "access check failed" & NUL;
505 Rmsg_01 : constant String := "access parameter is null" & NUL;
506 Rmsg_02 : constant String := "discriminant check failed" & NUL;
507 Rmsg_03 : constant String := "divide by zero" & NUL;
508 Rmsg_04 : constant String := "explicit raise" & NUL;
509 Rmsg_05 : constant String := "index check failed" & NUL;
510 Rmsg_06 : constant String := "invalid data" & NUL;
511 Rmsg_07 : constant String := "length check failed" & NUL;
512 Rmsg_08 : constant String := "null Exception_Id" & NUL;
513 Rmsg_09 : constant String := "null-exclusion check failed" & NUL;
514 Rmsg_10 : constant String := "overflow check failed" & NUL;
515 Rmsg_11 : constant String := "partition check failed" & NUL;
516 Rmsg_12 : constant String := "range check failed" & NUL;
517 Rmsg_13 : constant String := "tag check failed" & NUL;
518 Rmsg_14 : constant String := "access before elaboration" & NUL;
519 Rmsg_15 : constant String := "accessibility check failed" & NUL;
520 Rmsg_16 : constant String := "attempt to take address of" &
521 " intrinsic subprogram" & NUL;
522 Rmsg_17 : constant String := "all guards closed" & NUL;
523 Rmsg_18 : constant String := "improper use of generic subtype" &
524 " with predicate" & NUL;
525 Rmsg_19 : constant String := "Current_Task referenced in entry" &
526 " body" & NUL;
527 Rmsg_20 : constant String := "duplicated entry address" & NUL;
528 Rmsg_21 : constant String := "explicit raise" & NUL;
529 Rmsg_22 : constant String := "finalize/adjust raised exception" & NUL;
530 Rmsg_23 : constant String := "implicit return with No_Return" & NUL;
531 Rmsg_24 : constant String := "misaligned address value" & NUL;
532 Rmsg_25 : constant String := "missing return" & NUL;
533 Rmsg_26 : constant String := "overlaid controlled object" & NUL;
534 Rmsg_27 : constant String := "potentially blocking operation" & NUL;
535 Rmsg_28 : constant String := "stubbed subprogram called" & NUL;
536 Rmsg_29 : constant String := "unchecked union restriction" & NUL;
537 Rmsg_30 : constant String := "actual/returned class-wide" &
538 " value not transportable" & NUL;
539 Rmsg_31 : constant String := "empty storage pool" & NUL;
540 Rmsg_32 : constant String := "explicit raise" & NUL;
541 Rmsg_33 : constant String := "infinite recursion" & NUL;
542 Rmsg_34 : constant String := "object too large" & NUL;
543
544 -----------------------
545 -- Polling Interface --
546 -----------------------
547
548 type Unsigned is mod 2 ** 32;
549
550 Counter : Unsigned := 0;
551 pragma Warnings (Off, Counter);
552 -- This counter is provided for convenience. It can be used in Poll to
553 -- perform periodic but not systematic operations.
554
555 procedure Poll is separate;
556 -- The actual polling routine is separate, so that it can easily be
557 -- replaced with a target dependent version.
558
559 ------------------------------
560 -- Current_Target_Exception --
561 ------------------------------
562
563 function Current_Target_Exception return Exception_Occurrence is
564 begin
565 return Null_Occurrence;
566 end Current_Target_Exception;
567
568 -------------------
569 -- EId_To_String --
570 -------------------
571
572 function EId_To_String (X : Exception_Id) return String
573 renames Stream_Attributes.EId_To_String;
574
575 ------------------
576 -- EO_To_String --
577 ------------------
578
579 -- We use the null string to represent the null occurrence, otherwise we
580 -- output the Exception_Information string for the occurrence.
581
582 function EO_To_String (X : Exception_Occurrence) return String
583 renames Stream_Attributes.EO_To_String;
584
585 ------------------------
586 -- Exception_Identity --
587 ------------------------
588
589 function Exception_Identity
590 (X : Exception_Occurrence) return Exception_Id
591 is
592 begin
593 -- Note that the following test used to be here for the original Ada 95
594 -- semantics, but these were modified by AI-241 to require returning
595 -- Null_Id instead of raising Constraint_Error.
596
597 -- if X.Id = Null_Id then
598 -- raise Constraint_Error;
599 -- end if;
600
601 return X.Id;
602 end Exception_Identity;
603
604 ---------------------------
605 -- Exception_Information --
606 ---------------------------
607
608 function Exception_Information (X : Exception_Occurrence) return String is
609 begin
610 if X.Id = Null_Id then
611 raise Constraint_Error;
612 end if;
613
614 return Exception_Data.Exception_Information (X);
615 end Exception_Information;
616
617 -----------------------
618 -- Exception_Message --
619 -----------------------
620
621 function Exception_Message (X : Exception_Occurrence) return String is
622 begin
623 if X.Id = Null_Id then
624 raise Constraint_Error;
625 end if;
626
627 return X.Msg (1 .. X.Msg_Length);
628 end Exception_Message;
629
630 --------------------
631 -- Exception_Name --
632 --------------------
633
634 function Exception_Name (Id : Exception_Id) return String is
635 begin
636 if Id = null then
637 raise Constraint_Error;
638 end if;
639
640 return To_Ptr (Id.Full_Name) (1 .. Id.Name_Length - 1);
641 end Exception_Name;
642
643 function Exception_Name (X : Exception_Occurrence) return String is
644 begin
645 return Exception_Name (X.Id);
646 end Exception_Name;
647
648 ---------------------------
649 -- Exception_Name_Simple --
650 ---------------------------
651
652 function Exception_Name_Simple (X : Exception_Occurrence) return String is
653 Name : constant String := Exception_Name (X);
654 P : Natural;
655
656 begin
657 P := Name'Length;
658 while P > 1 loop
659 exit when Name (P - 1) = '.';
660 P := P - 1;
661 end loop;
662
663 -- Return result making sure lower bound is 1
664
665 declare
666 subtype Rname is String (1 .. Name'Length - P + 1);
667 begin
668 return Rname (Name (P .. Name'Length));
669 end;
670 end Exception_Name_Simple;
671
672 --------------------
673 -- Exception_Data --
674 --------------------
675
676 package body Exception_Data is separate;
677 -- This package can be easily dummied out if we do not want the basic
678 -- support for exception messages (such as in Ada 83).
679
680 package body Exception_Propagation is
681
682 procedure Setup_Exception
683 (Excep : EOA;
684 Current : EOA;
685 Reraised : Boolean := False)
686 is
687 pragma Warnings (Off, Excep);
688 pragma Warnings (Off, Current);
689 pragma Warnings (Off, Reraised);
690 begin
691 null;
692 end Setup_Exception;
693
694 end Exception_Propagation;
695
696 ----------------------
697 -- Exception_Traces --
698 ----------------------
699
700 package body Exception_Traces is separate;
701 -- Depending on the underlying support for IO the implementation will
702 -- differ. Moreover we would like to dummy out this package in case we do
703 -- not want any exception tracing support. This is why this package is
704 -- separated.
705
706 -----------------------
707 -- Stream Attributes --
708 -----------------------
709
710 package body Stream_Attributes is separate;
711 -- This package can be easily dummied out if we do not want the
712 -- support for streaming Exception_Ids and Exception_Occurrences.
713
714 -----------------------------
715 -- Process_Raise_Exception --
716 -----------------------------
717
718 procedure Process_Raise_Exception (E : Exception_Id) is
719 pragma Inspection_Point (E);
720 -- This is so the debugger can reliably inspect the parameter
721
722 Jumpbuf_Ptr : constant Address := Get_Jmpbuf_Address.all;
723 Excep : constant EOA := Get_Current_Excep.all;
724
725 procedure builtin_longjmp (buffer : Address; Flag : Integer);
726 pragma No_Return (builtin_longjmp);
727 pragma Import (C, builtin_longjmp, "_gnat_builtin_longjmp");
728
729 begin
730 -- WARNING: There should be no exception handler for this body because
731 -- this would cause gigi to prepend a setup for a new jmpbuf to the
732 -- sequence of statements in case of built-in sjljl. We would then
733 -- always get this new buf in Jumpbuf_Ptr instead of the one for the
734 -- exception we are handling, which would completely break the whole
735 -- design of this procedure.
736
737 -- If the jump buffer pointer is non-null, transfer control using it.
738 -- Otherwise announce an unhandled exception (note that this means that
739 -- we have no finalizations to do other than at the outer level).
740 -- Perform the necessary notification tasks in both cases.
741
742 if Jumpbuf_Ptr /= Null_Address then
743 if not Excep.Exception_Raised then
744 Excep.Exception_Raised := True;
745 Exception_Traces.Notify_Handled_Exception;
746 end if;
747
748 builtin_longjmp (Jumpbuf_Ptr, 1);
749
750 else
751 Exception_Traces.Notify_Unhandled_Exception;
752 Exception_Traces.Unhandled_Exception_Terminate;
753 end if;
754 end Process_Raise_Exception;
755
756 ----------------------------
757 -- Raise_Constraint_Error --
758 ----------------------------
759
760 procedure Raise_Constraint_Error
761 (File : System.Address;
762 Line : Integer)
763 is
764 begin
765 Raise_With_Location_And_Msg
766 (Constraint_Error_Def'Access, File, Line);
767 end Raise_Constraint_Error;
768
769 --------------------------------
770 -- Raise_Constraint_Error_Msg --
771 --------------------------------
772
773 procedure Raise_Constraint_Error_Msg
774 (File : System.Address;
775 Line : Integer;
776 Msg : System.Address)
777 is
778 begin
779 Raise_With_Location_And_Msg
780 (Constraint_Error_Def'Access, File, Line, Msg);
781 end Raise_Constraint_Error_Msg;
782
783 -------------------------
784 -- Raise_Current_Excep --
785 -------------------------
786
787 procedure Raise_Current_Excep (E : Exception_Id) is
788
789 pragma Inspection_Point (E);
790 -- This is so the debugger can reliably inspect the parameter when
791 -- inserting a breakpoint at the start of this procedure.
792
793 Id : Exception_Id := E;
794 pragma Volatile (Id);
795 pragma Warnings (Off, Id);
796 -- In order to provide support for breakpoints on unhandled exceptions,
797 -- the debugger will also need to be able to inspect the value of E from
798 -- another (inner) frame. So we need to make sure that if E is passed in
799 -- a register, its value is also spilled on stack. For this, we store
800 -- the parameter value in a local variable, and add a pragma Volatile to
801 -- make sure it is spilled. The pragma Warnings (Off) is needed because
802 -- the compiler knows that Id is not referenced and that this use of
803 -- pragma Volatile is peculiar!
804
805 begin
806 Debug_Raise_Exception (E => SSL.Exception_Data_Ptr (E));
807 Process_Raise_Exception (E);
808 end Raise_Current_Excep;
809
810 ---------------------
811 -- Raise_Exception --
812 ---------------------
813
814 procedure Raise_Exception
815 (E : Exception_Id;
816 Message : String := "")
817 is
818 EF : Exception_Id := E;
819
820 begin
821 -- Raise CE if E = Null_ID (AI-446)
822
823 if E = null then
824 EF := Constraint_Error'Identity;
825 end if;
826
827 -- Go ahead and raise appropriate exception
828
829 Exception_Data.Set_Exception_Msg (EF, Message);
830 Abort_Defer.all;
831 Raise_Current_Excep (EF);
832 end Raise_Exception;
833
834 ----------------------------
835 -- Raise_Exception_Always --
836 ----------------------------
837
838 procedure Raise_Exception_Always
839 (E : Exception_Id;
840 Message : String := "")
841 is
842 begin
843 Exception_Data.Set_Exception_Msg (E, Message);
844 Abort_Defer.all;
845 Raise_Current_Excep (E);
846 end Raise_Exception_Always;
847
848 -------------------------------------
849 -- Raise_From_Controlled_Operation --
850 -------------------------------------
851
852 procedure Raise_From_Controlled_Operation
853 (X : Ada.Exceptions.Exception_Occurrence)
854 is
855 Prefix : constant String := "adjust/finalize raised ";
856 Orig_Msg : constant String := Exception_Message (X);
857 New_Msg : constant String := Prefix & Exception_Name (X);
858
859 begin
860 if Orig_Msg'Length >= Prefix'Length
861 and then
862 Orig_Msg (Orig_Msg'First .. Orig_Msg'First + Prefix'Length - 1) =
863 Prefix
864 then
865 -- Message already has proper prefix, just re-reraise PROGRAM_ERROR
866
867 Raise_Exception_No_Defer
868 (E => Program_Error'Identity,
869 Message => Orig_Msg);
870
871 elsif Orig_Msg = "" then
872
873 -- No message present: just provide our own
874
875 Raise_Exception_No_Defer
876 (E => Program_Error'Identity,
877 Message => New_Msg);
878
879 else
880 -- Message present, add informational prefix
881
882 Raise_Exception_No_Defer
883 (E => Program_Error'Identity,
884 Message => New_Msg & ": " & Orig_Msg);
885 end if;
886 end Raise_From_Controlled_Operation;
887
888 -------------------------------
889 -- Raise_From_Signal_Handler --
890 -------------------------------
891
892 procedure Raise_From_Signal_Handler
893 (E : Exception_Id;
894 M : System.Address)
895 is
896 begin
897 Exception_Data.Set_Exception_C_Msg (E, M);
898 Abort_Defer.all;
899 Process_Raise_Exception (E);
900 end Raise_From_Signal_Handler;
901
902 -------------------------
903 -- Raise_Program_Error --
904 -------------------------
905
906 procedure Raise_Program_Error
907 (File : System.Address;
908 Line : Integer)
909 is
910 begin
911 Raise_With_Location_And_Msg
912 (Program_Error_Def'Access, File, Line);
913 end Raise_Program_Error;
914
915 -----------------------------
916 -- Raise_Program_Error_Msg --
917 -----------------------------
918
919 procedure Raise_Program_Error_Msg
920 (File : System.Address;
921 Line : Integer;
922 Msg : System.Address)
923 is
924 begin
925 Raise_With_Location_And_Msg
926 (Program_Error_Def'Access, File, Line, Msg);
927 end Raise_Program_Error_Msg;
928
929 -------------------------
930 -- Raise_Storage_Error --
931 -------------------------
932
933 procedure Raise_Storage_Error
934 (File : System.Address;
935 Line : Integer)
936 is
937 begin
938 Raise_With_Location_And_Msg
939 (Storage_Error_Def'Access, File, Line);
940 end Raise_Storage_Error;
941
942 -----------------------------
943 -- Raise_Storage_Error_Msg --
944 -----------------------------
945
946 procedure Raise_Storage_Error_Msg
947 (File : System.Address;
948 Line : Integer;
949 Msg : System.Address)
950 is
951 begin
952 Raise_With_Location_And_Msg
953 (Storage_Error_Def'Access, File, Line, Msg);
954 end Raise_Storage_Error_Msg;
955
956 ---------------------------------
957 -- Raise_With_Location_And_Msg --
958 ---------------------------------
959
960 procedure Raise_With_Location_And_Msg
961 (E : Exception_Id;
962 F : System.Address;
963 L : Integer;
964 M : System.Address := System.Null_Address)
965 is
966 begin
967 Exception_Data.Set_Exception_C_Msg (E, F, L, Msg2 => M);
968 Abort_Defer.all;
969 Raise_Current_Excep (E);
970 end Raise_With_Location_And_Msg;
971
972 --------------------
973 -- Raise_With_Msg --
974 --------------------
975
976 procedure Raise_With_Msg (E : Exception_Id) is
977 Excep : constant EOA := Get_Current_Excep.all;
978
979 begin
980 Excep.Exception_Raised := False;
981 Excep.Id := E;
982 Excep.Num_Tracebacks := 0;
983 Excep.Cleanup_Flag := False;
984 Excep.Pid := Local_Partition_ID;
985 Abort_Defer.all;
986 Raise_Current_Excep (E);
987 end Raise_With_Msg;
988
989 --------------------------------------
990 -- Calls to Run-Time Check Routines --
991 --------------------------------------
992
993 procedure Rcheck_00 (File : System.Address; Line : Integer) is
994 begin
995 Raise_Constraint_Error_Msg (File, Line, Rmsg_00'Address);
996 end Rcheck_00;
997
998 procedure Rcheck_01 (File : System.Address; Line : Integer) is
999 begin
1000 Raise_Constraint_Error_Msg (File, Line, Rmsg_01'Address);
1001 end Rcheck_01;
1002
1003 procedure Rcheck_02 (File : System.Address; Line : Integer) is
1004 begin
1005 Raise_Constraint_Error_Msg (File, Line, Rmsg_02'Address);
1006 end Rcheck_02;
1007
1008 procedure Rcheck_03 (File : System.Address; Line : Integer) is
1009 begin
1010 Raise_Constraint_Error_Msg (File, Line, Rmsg_03'Address);
1011 end Rcheck_03;
1012
1013 procedure Rcheck_04 (File : System.Address; Line : Integer) is
1014 begin
1015 Raise_Constraint_Error_Msg (File, Line, Rmsg_04'Address);
1016 end Rcheck_04;
1017
1018 procedure Rcheck_05 (File : System.Address; Line : Integer) is
1019 begin
1020 Raise_Constraint_Error_Msg (File, Line, Rmsg_05'Address);
1021 end Rcheck_05;
1022
1023 procedure Rcheck_06 (File : System.Address; Line : Integer) is
1024 begin
1025 Raise_Constraint_Error_Msg (File, Line, Rmsg_06'Address);
1026 end Rcheck_06;
1027
1028 procedure Rcheck_07 (File : System.Address; Line : Integer) is
1029 begin
1030 Raise_Constraint_Error_Msg (File, Line, Rmsg_07'Address);
1031 end Rcheck_07;
1032
1033 procedure Rcheck_08 (File : System.Address; Line : Integer) is
1034 begin
1035 Raise_Constraint_Error_Msg (File, Line, Rmsg_08'Address);
1036 end Rcheck_08;
1037
1038 procedure Rcheck_09 (File : System.Address; Line : Integer) is
1039 begin
1040 Raise_Constraint_Error_Msg (File, Line, Rmsg_09'Address);
1041 end Rcheck_09;
1042
1043 procedure Rcheck_10 (File : System.Address; Line : Integer) is
1044 begin
1045 Raise_Constraint_Error_Msg (File, Line, Rmsg_10'Address);
1046 end Rcheck_10;
1047
1048 procedure Rcheck_11 (File : System.Address; Line : Integer) is
1049 begin
1050 Raise_Constraint_Error_Msg (File, Line, Rmsg_11'Address);
1051 end Rcheck_11;
1052
1053 procedure Rcheck_12 (File : System.Address; Line : Integer) is
1054 begin
1055 Raise_Constraint_Error_Msg (File, Line, Rmsg_12'Address);
1056 end Rcheck_12;
1057
1058 procedure Rcheck_13 (File : System.Address; Line : Integer) is
1059 begin
1060 Raise_Constraint_Error_Msg (File, Line, Rmsg_13'Address);
1061 end Rcheck_13;
1062
1063 procedure Rcheck_14 (File : System.Address; Line : Integer) is
1064 begin
1065 Raise_Program_Error_Msg (File, Line, Rmsg_14'Address);
1066 end Rcheck_14;
1067
1068 procedure Rcheck_15 (File : System.Address; Line : Integer) is
1069 begin
1070 Raise_Program_Error_Msg (File, Line, Rmsg_15'Address);
1071 end Rcheck_15;
1072
1073 procedure Rcheck_16 (File : System.Address; Line : Integer) is
1074 begin
1075 Raise_Program_Error_Msg (File, Line, Rmsg_16'Address);
1076 end Rcheck_16;
1077
1078 procedure Rcheck_17 (File : System.Address; Line : Integer) is
1079 begin
1080 Raise_Program_Error_Msg (File, Line, Rmsg_17'Address);
1081 end Rcheck_17;
1082
1083 procedure Rcheck_18 (File : System.Address; Line : Integer) is
1084 begin
1085 Raise_Program_Error_Msg (File, Line, Rmsg_18'Address);
1086 end Rcheck_18;
1087
1088 procedure Rcheck_19 (File : System.Address; Line : Integer) is
1089 begin
1090 Raise_Program_Error_Msg (File, Line, Rmsg_19'Address);
1091 end Rcheck_19;
1092
1093 procedure Rcheck_20 (File : System.Address; Line : Integer) is
1094 begin
1095 Raise_Program_Error_Msg (File, Line, Rmsg_20'Address);
1096 end Rcheck_20;
1097
1098 procedure Rcheck_21 (File : System.Address; Line : Integer) is
1099 begin
1100 Raise_Program_Error_Msg (File, Line, Rmsg_21'Address);
1101 end Rcheck_21;
1102
1103 procedure Rcheck_22 (File : System.Address; Line : Integer) is
1104 begin
1105 Raise_Program_Error_Msg (File, Line, Rmsg_22'Address);
1106 end Rcheck_22;
1107
1108 procedure Rcheck_23 (File : System.Address; Line : Integer) is
1109 begin
1110 Raise_Program_Error_Msg (File, Line, Rmsg_23'Address);
1111 end Rcheck_23;
1112
1113 procedure Rcheck_24 (File : System.Address; Line : Integer) is
1114 begin
1115 Raise_Program_Error_Msg (File, Line, Rmsg_24'Address);
1116 end Rcheck_24;
1117
1118 procedure Rcheck_25 (File : System.Address; Line : Integer) is
1119 begin
1120 Raise_Program_Error_Msg (File, Line, Rmsg_25'Address);
1121 end Rcheck_25;
1122
1123 procedure Rcheck_26 (File : System.Address; Line : Integer) is
1124 begin
1125 Raise_Program_Error_Msg (File, Line, Rmsg_26'Address);
1126 end Rcheck_26;
1127
1128 procedure Rcheck_27 (File : System.Address; Line : Integer) is
1129 begin
1130 Raise_Program_Error_Msg (File, Line, Rmsg_27'Address);
1131 end Rcheck_27;
1132
1133 procedure Rcheck_28 (File : System.Address; Line : Integer) is
1134 begin
1135 Raise_Program_Error_Msg (File, Line, Rmsg_28'Address);
1136 end Rcheck_28;
1137
1138 procedure Rcheck_29 (File : System.Address; Line : Integer) is
1139 begin
1140 Raise_Program_Error_Msg (File, Line, Rmsg_29'Address);
1141 end Rcheck_29;
1142
1143 procedure Rcheck_30 (File : System.Address; Line : Integer) is
1144 begin
1145 Raise_Program_Error_Msg (File, Line, Rmsg_30'Address);
1146 end Rcheck_30;
1147
1148 procedure Rcheck_31 (File : System.Address; Line : Integer) is
1149 begin
1150 Raise_Storage_Error_Msg (File, Line, Rmsg_31'Address);
1151 end Rcheck_31;
1152
1153 procedure Rcheck_32 (File : System.Address; Line : Integer) is
1154 begin
1155 Raise_Storage_Error_Msg (File, Line, Rmsg_32'Address);
1156 end Rcheck_32;
1157
1158 procedure Rcheck_33 (File : System.Address; Line : Integer) is
1159 begin
1160 Raise_Storage_Error_Msg (File, Line, Rmsg_33'Address);
1161 end Rcheck_33;
1162
1163 procedure Rcheck_34 (File : System.Address; Line : Integer) is
1164 begin
1165 Raise_Storage_Error_Msg (File, Line, Rmsg_34'Address);
1166 end Rcheck_34;
1167
1168 -------------
1169 -- Reraise --
1170 -------------
1171
1172 procedure Reraise is
1173 Excep : constant EOA := Get_Current_Excep.all;
1174
1175 begin
1176 Abort_Defer.all;
1177 Raise_Current_Excep (Excep.Id);
1178 end Reraise;
1179
1180 ------------------------
1181 -- Reraise_Occurrence --
1182 ------------------------
1183
1184 procedure Reraise_Occurrence (X : Exception_Occurrence) is
1185 begin
1186 if X.Id /= null then
1187 Abort_Defer.all;
1188 Save_Occurrence_No_Private (Get_Current_Excep.all.all, X);
1189 Raise_Current_Excep (X.Id);
1190 end if;
1191 end Reraise_Occurrence;
1192
1193 -------------------------------
1194 -- Reraise_Occurrence_Always --
1195 -------------------------------
1196
1197 procedure Reraise_Occurrence_Always (X : Exception_Occurrence) is
1198 begin
1199 Abort_Defer.all;
1200 Save_Occurrence_No_Private (Get_Current_Excep.all.all, X);
1201 Raise_Current_Excep (X.Id);
1202 end Reraise_Occurrence_Always;
1203
1204 ---------------------------------
1205 -- Reraise_Occurrence_No_Defer --
1206 ---------------------------------
1207
1208 procedure Reraise_Occurrence_No_Defer (X : Exception_Occurrence) is
1209 begin
1210 Save_Occurrence_No_Private (Get_Current_Excep.all.all, X);
1211 Raise_Current_Excep (X.Id);
1212 end Reraise_Occurrence_No_Defer;
1213
1214 ---------------------
1215 -- Save_Occurrence --
1216 ---------------------
1217
1218 procedure Save_Occurrence
1219 (Target : out Exception_Occurrence;
1220 Source : Exception_Occurrence)
1221 is
1222 begin
1223 Save_Occurrence_No_Private (Target, Source);
1224 end Save_Occurrence;
1225
1226 function Save_Occurrence (Source : Exception_Occurrence) return EOA is
1227 Target : constant EOA := new Exception_Occurrence;
1228 begin
1229 Save_Occurrence (Target.all, Source);
1230 return Target;
1231 end Save_Occurrence;
1232
1233 --------------------------------
1234 -- Save_Occurrence_No_Private --
1235 --------------------------------
1236
1237 procedure Save_Occurrence_No_Private
1238 (Target : out Exception_Occurrence;
1239 Source : Exception_Occurrence)
1240 is
1241 begin
1242 Target.Id := Source.Id;
1243 Target.Msg_Length := Source.Msg_Length;
1244 Target.Num_Tracebacks := Source.Num_Tracebacks;
1245 Target.Pid := Source.Pid;
1246 Target.Cleanup_Flag := Source.Cleanup_Flag;
1247
1248 Target.Msg (1 .. Target.Msg_Length) :=
1249 Source.Msg (1 .. Target.Msg_Length);
1250
1251 Target.Tracebacks (1 .. Target.Num_Tracebacks) :=
1252 Source.Tracebacks (1 .. Target.Num_Tracebacks);
1253 end Save_Occurrence_No_Private;
1254
1255 -------------------------
1256 -- Transfer_Occurrence --
1257 -------------------------
1258
1259 procedure Transfer_Occurrence
1260 (Target : Exception_Occurrence_Access;
1261 Source : Exception_Occurrence)
1262 is
1263 begin
1264 -- Setup Target as an exception to be propagated in the calling task
1265 -- (rendezvous-wise), taking care not to clobber the associated private
1266 -- data. Target is expected to be a pointer to the calling task's fixed
1267 -- TSD occurrence, which is very different from Get_Current_Excep here
1268 -- because this subprogram is called from the called task.
1269
1270 Save_Occurrence_No_Private (Target.all, Source);
1271 end Transfer_Occurrence;
1272
1273 -------------------
1274 -- String_To_EId --
1275 -------------------
1276
1277 function String_To_EId (S : String) return Exception_Id
1278 renames Stream_Attributes.String_To_EId;
1279
1280 ------------------
1281 -- String_To_EO --
1282 ------------------
1283
1284 function String_To_EO (S : String) return Exception_Occurrence
1285 renames Stream_Attributes.String_To_EO;
1286
1287 ------------------------------
1288 -- Raise_Exception_No_Defer --
1289 ------------------------------
1290
1291 procedure Raise_Exception_No_Defer
1292 (E : Exception_Id;
1293 Message : String := "")
1294 is
1295 begin
1296 Exception_Data.Set_Exception_Msg (E, Message);
1297
1298 -- Do not call Abort_Defer.all, as specified by the spec
1299
1300 Raise_Current_Excep (E);
1301 end Raise_Exception_No_Defer;
1302
1303 ---------------
1304 -- To_Stderr --
1305 ---------------
1306
1307 procedure To_Stderr (C : Character) is
1308 type int is new Integer;
1309
1310 procedure put_char_stderr (C : int);
1311 pragma Import (C, put_char_stderr, "put_char_stderr");
1312
1313 begin
1314 put_char_stderr (Character'Pos (C));
1315 end To_Stderr;
1316
1317 procedure To_Stderr (S : String) is
1318 begin
1319 for J in S'Range loop
1320 if S (J) /= ASCII.CR then
1321 To_Stderr (S (J));
1322 end if;
1323 end loop;
1324 end To_Stderr;
1325
1326 end Ada.Exceptions;
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