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Fix comment in gcc/config/arm/predicates.md
[official-gcc.git] / gcc / ada / lib-writ.adb
blobf794162e20b52d64afbc6f42f1a776656691dfbe
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- L I B . W R I T --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2013, 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. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
20 -- --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
23 -- --
24 ------------------------------------------------------------------------------
25
26 with ALI; use ALI;
27 with Atree; use Atree;
28 with Casing; use Casing;
29 with Debug; use Debug;
30 with Einfo; use Einfo;
31 with Errout; use Errout;
32 with Fname; use Fname;
33 with Fname.UF; use Fname.UF;
34 with Lib.Util; use Lib.Util;
35 with Lib.Xref; use Lib.Xref;
36 with Nlists; use Nlists;
37 with Gnatvsn; use Gnatvsn;
38 with Opt; use Opt;
39 with Osint; use Osint;
40 with Osint.C; use Osint.C;
41 with Output; use Output;
42 with Par;
43 with Par_SCO; use Par_SCO;
44 with Restrict; use Restrict;
45 with Rident; use Rident;
46 with Scn; use Scn;
47 with Sinfo; use Sinfo;
48 with Sinput; use Sinput;
49 with Snames; use Snames;
50 with Stringt; use Stringt;
51 with Tbuild; use Tbuild;
52 with Uname; use Uname;
53
54 with System.Case_Util; use System.Case_Util;
55 with System.WCh_Con; use System.WCh_Con;
56
57 package body Lib.Writ is
58
59 -----------------------
60 -- Local Subprograms --
61 -----------------------
62
63 procedure Write_Unit_Name (N : Node_Id);
64 -- Used to write out the unit name for R (pragma Restriction) lines
65 -- for uses of Restriction (No_Dependence => unit-name).
66
67 ----------------------------------
68 -- Add_Preprocessing_Dependency --
69 ----------------------------------
70
71 procedure Add_Preprocessing_Dependency (S : Source_File_Index) is
72 begin
73 Units.Increment_Last;
74 Units.Table (Units.Last) :=
75 (Unit_File_Name => File_Name (S),
76 Unit_Name => No_Unit_Name,
77 Expected_Unit => No_Unit_Name,
78 Source_Index => S,
79 Cunit => Empty,
80 Cunit_Entity => Empty,
81 Dependency_Num => 0,
82 Dynamic_Elab => False,
83 Fatal_Error => False,
84 Generate_Code => False,
85 Has_Allocator => False,
86 Has_RACW => False,
87 Is_Compiler_Unit => False,
88 Ident_String => Empty,
89 Loading => False,
90 Main_Priority => -1,
91 Main_CPU => -1,
92 Munit_Index => 0,
93 Serial_Number => 0,
94 Version => 0,
95 Error_Location => No_Location,
96 OA_Setting => 'O',
97 SPARK_Mode_Pragma => Empty);
98 end Add_Preprocessing_Dependency;
99
100 ------------------------------
101 -- Ensure_System_Dependency --
102 ------------------------------
103
104 procedure Ensure_System_Dependency is
105 System_Uname : Unit_Name_Type;
106 -- Unit name for system spec if needed for dummy entry
107
108 System_Fname : File_Name_Type;
109 -- File name for system spec if needed for dummy entry
110
111 begin
112 -- Nothing to do if we already compiled System
113
114 for Unum in Units.First .. Last_Unit loop
115 if Units.Table (Unum).Source_Index = System_Source_File_Index then
116 return;
117 end if;
118 end loop;
119
120 -- If no entry for system.ads in the units table, then add a entry
121 -- to the units table for system.ads, which will be referenced when
122 -- the ali file is generated. We need this because every unit depends
123 -- on system as a result of Targparm scanning the system.ads file to
124 -- determine the target dependent parameters for the compilation.
125
126 Name_Len := 6;
127 Name_Buffer (1 .. 6) := "system";
128 System_Uname := Name_To_Unit_Name (Name_Enter);
129 System_Fname := File_Name (System_Source_File_Index);
130
131 Units.Increment_Last;
132 Units.Table (Units.Last) := (
133 Unit_File_Name => System_Fname,
134 Unit_Name => System_Uname,
135 Expected_Unit => System_Uname,
136 Source_Index => System_Source_File_Index,
137 Cunit => Empty,
138 Cunit_Entity => Empty,
139 Dependency_Num => 0,
140 Dynamic_Elab => False,
141 Fatal_Error => False,
142 Generate_Code => False,
143 Has_Allocator => False,
144 Has_RACW => False,
145 Is_Compiler_Unit => False,
146 Ident_String => Empty,
147 Loading => False,
148 Main_Priority => -1,
149 Main_CPU => -1,
150 Munit_Index => 0,
151 Serial_Number => 0,
152 Version => 0,
153 Error_Location => No_Location,
154 OA_Setting => 'O',
155 SPARK_Mode_Pragma => Empty);
156
157 -- Parse system.ads so that the checksum is set right
158 -- Style checks are not applied.
159
160 declare
161 Save_Mindex : constant Nat := Multiple_Unit_Index;
162 Save_Style : constant Boolean := Style_Check;
163 begin
164 Multiple_Unit_Index := 0;
165 Style_Check := False;
166 Initialize_Scanner (Units.Last, System_Source_File_Index);
167 Discard_List (Par (Configuration_Pragmas => False));
168 Style_Check := Save_Style;
169 Multiple_Unit_Index := Save_Mindex;
170 end;
171 end Ensure_System_Dependency;
172
173 ---------------
174 -- Write_ALI --
175 ---------------
176
177 procedure Write_ALI (Object : Boolean) is
178
179 ----------------
180 -- Local Data --
181 ----------------
182
183 Last_Unit : constant Unit_Number_Type := Units.Last;
184 -- Record unit number of last unit. We capture this in case we
185 -- have to add a dummy entry to the unit table for package System.
186
187 With_Flags : array (Units.First .. Last_Unit) of Boolean;
188 -- Array of flags to show which units are with'ed
189
190 Elab_Flags : array (Units.First .. Last_Unit) of Boolean;
191 -- Array of flags to show which units have pragma Elaborate set
192
193 Elab_All_Flags : array (Units.First .. Last_Unit) of Boolean;
194 -- Array of flags to show which units have pragma Elaborate All set
195
196 Elab_Des_Flags : array (Units.First .. Last_Unit) of Boolean;
197 -- Array of flags to show which units have Elaborate_Desirable set
198
199 Elab_All_Des_Flags : array (Units.First .. Last_Unit) of Boolean;
200 -- Array of flags to show which units have Elaborate_All_Desirable set
201
202 type Yes_No is (Unknown, Yes, No);
203 Implicit_With : array (Units.First .. Last_Unit) of Yes_No;
204 -- Indicates if an implicit with has been given for the unit. Yes if
205 -- certainly present, no if certainly absent, unkonwn if not known.
206
207 Sdep_Table : Unit_Ref_Table (1 .. Pos (Last_Unit - Units.First + 2));
208 -- Sorted table of source dependencies. One extra entry in case we
209 -- have to add a dummy entry for System.
210
211 Num_Sdep : Nat := 0;
212 -- Number of active entries in Sdep_Table
213
214 flag_compare_debug : Int;
215 pragma Import (C, flag_compare_debug);
216 -- Import from toplev.c
217
218 -----------------------
219 -- Local Subprograms --
220 -----------------------
221
222 procedure Collect_Withs (Cunit : Node_Id);
223 -- Collect with lines for entries in the context clause of the
224 -- given compilation unit, Cunit.
225
226 procedure Update_Tables_From_ALI_File;
227 -- Given an up to date ALI file (see Up_To_Date_ALI_file_Exists
228 -- function), update tables from the ALI information, including
229 -- specifically the Compilation_Switches table.
230
231 function Up_To_Date_ALI_File_Exists return Boolean;
232 -- If there exists an ALI file that is up to date, then this function
233 -- initializes the tables in the ALI spec to contain information on
234 -- this file (using Scan_ALI) and returns True. If no file exists,
235 -- or the file is not up to date, then False is returned.
236
237 procedure Write_Unit_Information (Unit_Num : Unit_Number_Type);
238 -- Write out the library information for one unit for which code is
239 -- generated (includes unit line and with lines).
240
241 procedure Write_With_Lines;
242 -- Write out with lines collected by calls to Collect_Withs
243
244 -------------------
245 -- Collect_Withs --
246 -------------------
247
248 procedure Collect_Withs (Cunit : Node_Id) is
249 Item : Node_Id;
250 Unum : Unit_Number_Type;
251
252 begin
253 Item := First (Context_Items (Cunit));
254 while Present (Item) loop
255
256 -- Process with clause
257
258 -- Ada 2005 (AI-50217): limited with_clauses do not create
259 -- dependencies, but must be recorded as components of the
260 -- partition, in case there is no regular with_clause for
261 -- the unit anywhere else.
262
263 if Nkind (Item) = N_With_Clause then
264 Unum := Get_Cunit_Unit_Number (Library_Unit (Item));
265 With_Flags (Unum) := True;
266
267 if not Limited_Present (Item) then
268 if Elaborate_Present (Item) then
269 Elab_Flags (Unum) := True;
270 end if;
271
272 if Elaborate_All_Present (Item) then
273 Elab_All_Flags (Unum) := True;
274 end if;
275
276 if Elaborate_All_Desirable (Item) then
277 Elab_All_Des_Flags (Unum) := True;
278 end if;
279
280 if Elaborate_Desirable (Item) then
281 Elab_Des_Flags (Unum) := True;
282 end if;
283
284 else
285 Set_From_Limited_With (Cunit_Entity (Unum));
286 end if;
287
288 if Implicit_With (Unum) /= Yes then
289 if Implicit_With_From_Instantiation (Item) then
290 Implicit_With (Unum) := Yes;
291 else
292 Implicit_With (Unum) := No;
293 end if;
294 end if;
295 end if;
296
297 Next (Item);
298 end loop;
299 end Collect_Withs;
300
301 --------------------------------
302 -- Up_To_Date_ALI_File_Exists --
303 --------------------------------
304
305 function Up_To_Date_ALI_File_Exists return Boolean is
306 Name : File_Name_Type;
307 Text : Text_Buffer_Ptr;
308 Id : Sdep_Id;
309 Sind : Source_File_Index;
310
311 begin
312 Opt.Check_Object_Consistency := True;
313 Read_Library_Info (Name, Text);
314
315 -- Return if we could not find an ALI file
316
317 if Text = null then
318 return False;
319 end if;
320
321 -- Return if ALI file has bad format
322
323 Initialize_ALI;
324
325 if Scan_ALI (Name, Text, False, Err => True) = No_ALI_Id then
326 return False;
327 end if;
328
329 -- If we have an OK ALI file, check if it is up to date
330 -- Note that we assume that the ALI read has all the entries
331 -- we have in our table, plus some additional ones (that can
332 -- come from expansion).
333
334 Id := First_Sdep_Entry;
335 for J in 1 .. Num_Sdep loop
336 Sind := Units.Table (Sdep_Table (J)).Source_Index;
337
338 while Sdep.Table (Id).Sfile /= File_Name (Sind) loop
339 if Id = Sdep.Last then
340 return False;
341 else
342 Id := Id + 1;
343 end if;
344 end loop;
345
346 if Sdep.Table (Id).Stamp /= Time_Stamp (Sind) then
347 return False;
348 end if;
349 end loop;
350
351 return True;
352 end Up_To_Date_ALI_File_Exists;
353
354 ---------------------------------
355 -- Update_Tables_From_ALI_File --
356 ---------------------------------
357
358 procedure Update_Tables_From_ALI_File is
359 begin
360 -- Build Compilation_Switches table
361
362 Compilation_Switches.Init;
363
364 for J in First_Arg_Entry .. Args.Last loop
365 Compilation_Switches.Increment_Last;
366 Compilation_Switches.Table (Compilation_Switches.Last) :=
367 Args.Table (J);
368 end loop;
369 end Update_Tables_From_ALI_File;
370
371 ----------------------------
372 -- Write_Unit_Information --
373 ----------------------------
374
375 procedure Write_Unit_Information (Unit_Num : Unit_Number_Type) is
376 Unode : constant Node_Id := Cunit (Unit_Num);
377 Ukind : constant Node_Kind := Nkind (Unit (Unode));
378 Uent : constant Entity_Id := Cunit_Entity (Unit_Num);
379 Pnode : Node_Id;
380
381 begin
382 Write_Info_Initiate ('U');
383 Write_Info_Char (' ');
384 Write_Info_Name (Unit_Name (Unit_Num));
385 Write_Info_Tab (25);
386 Write_Info_Name (Unit_File_Name (Unit_Num));
387
388 Write_Info_Tab (49);
389 Write_Info_Str (Version_Get (Unit_Num));
390
391 -- Add BD parameter if Elaborate_Body pragma desirable
392
393 if Ekind (Uent) = E_Package
394 and then Elaborate_Body_Desirable (Uent)
395 then
396 Write_Info_Str (" BD");
397 end if;
398
399 -- Add BN parameter if body needed for SAL
400
401 if (Is_Subprogram (Uent)
402 or else Ekind (Uent) = E_Package
403 or else Is_Generic_Unit (Uent))
404 and then Body_Needed_For_SAL (Uent)
405 then
406 Write_Info_Str (" BN");
407 end if;
408
409 if Dynamic_Elab (Unit_Num) then
410 Write_Info_Str (" DE");
411 end if;
412
413 -- Set the Elaborate_Body indication if either an explicit pragma
414 -- was present, or if this is an instantiation.
415
416 if Has_Pragma_Elaborate_Body (Uent)
417 or else (Ukind = N_Package_Declaration
418 and then Is_Generic_Instance (Uent)
419 and then Present (Corresponding_Body (Unit (Unode))))
420 then
421 Write_Info_Str (" EB");
422 end if;
423
424 -- Now see if we should tell the binder that an elaboration entity
425 -- is present, which must be set to true during elaboration.
426 -- We generate the indication if the following condition is met:
427
428 -- If this is a spec ...
429
430 if (Is_Subprogram (Uent)
431 or else
432 Ekind (Uent) = E_Package
433 or else
434 Is_Generic_Unit (Uent))
435
436 -- and an elaboration entity was declared ...
437
438 and then Present (Elaboration_Entity (Uent))
439
440 -- and either the elaboration flag is required ...
441
442 and then
443 (Elaboration_Entity_Required (Uent)
444
445 -- or this unit has elaboration code ...
446
447 or else not Has_No_Elaboration_Code (Unode)
448
449 -- or this unit has a separate body and this
450 -- body has elaboration code.
451
452 or else
453 (Ekind (Uent) = E_Package
454 and then Present (Body_Entity (Uent))
455 and then
456 not Has_No_Elaboration_Code
457 (Parent
458 (Declaration_Node
459 (Body_Entity (Uent))))))
460 then
461 if Convention (Uent) = Convention_CIL then
462
463 -- Special case for generic CIL packages which never have
464 -- elaboration code
465
466 Write_Info_Str (" NE");
467
468 else
469 Write_Info_Str (" EE");
470 end if;
471 end if;
472
473 if Has_No_Elaboration_Code (Unode) then
474 Write_Info_Str (" NE");
475 end if;
476
477 Write_Info_Str (" O");
478 Write_Info_Char (OA_Setting (Unit_Num));
479
480 if Ekind_In (Uent, E_Package, E_Package_Body)
481 and then Present (Finalizer (Uent))
482 then
483 Write_Info_Str (" PF");
484 end if;
485
486 if Is_Preelaborated (Uent) then
487 Write_Info_Str (" PR");
488 end if;
489
490 if Is_Pure (Uent) then
491 Write_Info_Str (" PU");
492 end if;
493
494 if Has_RACW (Unit_Num) then
495 Write_Info_Str (" RA");
496 end if;
497
498 if Is_Remote_Call_Interface (Uent) then
499 Write_Info_Str (" RC");
500 end if;
501
502 if Is_Remote_Types (Uent) then
503 Write_Info_Str (" RT");
504 end if;
505
506 if Is_Shared_Passive (Uent) then
507 Write_Info_Str (" SP");
508 end if;
509
510 if Ukind = N_Subprogram_Declaration
511 or else Ukind = N_Subprogram_Body
512 then
513 Write_Info_Str (" SU");
514
515 elsif Ukind = N_Package_Declaration
516 or else
517 Ukind = N_Package_Body
518 then
519 -- If this is a wrapper package for a subprogram instantiation,
520 -- the user view is the subprogram. Note that in this case the
521 -- ali file contains both the spec and body of the instance.
522
523 if Is_Wrapper_Package (Uent) then
524 Write_Info_Str (" SU");
525 else
526 Write_Info_Str (" PK");
527 end if;
528
529 elsif Ukind = N_Generic_Package_Declaration then
530 Write_Info_Str (" PK");
531
532 end if;
533
534 if Ukind in N_Generic_Declaration
535 or else
536 (Present (Library_Unit (Unode))
537 and then
538 Nkind (Unit (Library_Unit (Unode))) in N_Generic_Declaration)
539 then
540 Write_Info_Str (" GE");
541 end if;
542
543 if not Is_Internal_File_Name (Unit_File_Name (Unit_Num), True) then
544 case Identifier_Casing (Source_Index (Unit_Num)) is
545 when All_Lower_Case => Write_Info_Str (" IL");
546 when All_Upper_Case => Write_Info_Str (" IU");
547 when others => null;
548 end case;
549
550 case Keyword_Casing (Source_Index (Unit_Num)) is
551 when Mixed_Case => Write_Info_Str (" KM");
552 when All_Upper_Case => Write_Info_Str (" KU");
553 when others => null;
554 end case;
555 end if;
556
557 if Initialize_Scalars or else Invalid_Value_Used then
558 Write_Info_Str (" IS");
559 end if;
560
561 Write_Info_EOL;
562
563 -- Generate with lines, first those that are directly with'ed
564
565 for J in With_Flags'Range loop
566 With_Flags (J) := False;
567 Elab_Flags (J) := False;
568 Elab_All_Flags (J) := False;
569 Elab_Des_Flags (J) := False;
570 Elab_All_Des_Flags (J) := False;
571 Implicit_With (J) := Unknown;
572 end loop;
573
574 Collect_Withs (Unode);
575
576 -- For a body, we must also check for any subunits which belong to
577 -- it and which have context clauses of their own, since these
578 -- with'ed units are part of its own elaboration dependencies.
579
580 if Nkind (Unit (Unode)) in N_Unit_Body then
581 for S in Units.First .. Last_Unit loop
582
583 -- We are only interested in subunits.
584 -- For preproc. data and def. files, Cunit is Empty, so
585 -- we need to test that first.
586
587 if Cunit (S) /= Empty
588 and then Nkind (Unit (Cunit (S))) = N_Subunit
589 then
590 Pnode := Library_Unit (Cunit (S));
591
592 -- In gnatc mode, the errors in the subunits will not
593 -- have been recorded, but the analysis of the subunit
594 -- may have failed. There is no information to add to
595 -- ALI file in this case.
596
597 if No (Pnode) then
598 exit;
599 end if;
600
601 -- Find ultimate parent of the subunit
602
603 while Nkind (Unit (Pnode)) = N_Subunit loop
604 Pnode := Library_Unit (Pnode);
605 end loop;
606
607 -- See if it belongs to current unit, and if so, include
608 -- its with_clauses.
609
610 if Pnode = Unode then
611 Collect_Withs (Cunit (S));
612 end if;
613 end if;
614 end loop;
615 end if;
616
617 Write_With_Lines;
618
619 -- Generate the linker option lines
620
621 for J in 1 .. Linker_Option_Lines.Last loop
622
623 -- Pragma Linker_Options is not allowed in predefined generic
624 -- units. This is because they won't be read, due to the fact that
625 -- with lines for generic units lack the file name and lib name
626 -- parameters (see Lib_Writ spec for an explanation).
627
628 if Is_Generic_Unit (Cunit_Entity (Main_Unit))
629 and then
630 Is_Predefined_File_Name (Unit_File_Name (Current_Sem_Unit))
631 and then Linker_Option_Lines.Table (J).Unit = Unit_Num
632 then
633 Set_Standard_Error;
634 Write_Line
635 ("linker options not allowed in predefined generic unit");
636 raise Unrecoverable_Error;
637 end if;
638
639 -- Output one linker option line
640
641 declare
642 S : Linker_Option_Entry renames Linker_Option_Lines.Table (J);
643 begin
644 if S.Unit = Unit_Num then
645 Write_Info_Initiate ('L');
646 Write_Info_Char (' ');
647 Write_Info_Slit (S.Option);
648 Write_Info_EOL;
649 end if;
650 end;
651 end loop;
652
653 -- Output notes
654
655 for J in 1 .. Notes.Last loop
656 declare
657 N : constant Node_Id := Notes.Table (J).Pragma_Node;
658 L : constant Source_Ptr := Sloc (N);
659 U : constant Unit_Number_Type := Notes.Table (J).Unit;
660 C : Character;
661
662 begin
663 if U = Unit_Num then
664 Write_Info_Initiate ('N');
665 Write_Info_Char (' ');
666
667 case Chars (Pragma_Identifier (N)) is
668 when Name_Annotate =>
669 C := 'A';
670 when Name_Comment =>
671 C := 'C';
672 when Name_Ident =>
673 C := 'I';
674 when Name_Title =>
675 C := 'T';
676 when Name_Subtitle =>
677 C := 'S';
678 when others =>
679 raise Program_Error;
680 end case;
681
682 Write_Info_Char (C);
683 Write_Info_Int (Int (Get_Logical_Line_Number (L)));
684 Write_Info_Char (':');
685 Write_Info_Int (Int (Get_Column_Number (L)));
686
687 declare
688 A : Node_Id;
689
690 begin
691 A := First (Pragma_Argument_Associations (N));
692 while Present (A) loop
693 Write_Info_Char (' ');
694
695 if Chars (A) /= No_Name then
696 Write_Info_Name (Chars (A));
697 Write_Info_Char (':');
698 end if;
699
700 declare
701 Expr : constant Node_Id := Expression (A);
702
703 begin
704 if Nkind (Expr) = N_Identifier then
705 Write_Info_Name (Chars (Expr));
706
707 elsif Nkind (Expr) = N_Integer_Literal
708 and then Is_Static_Expression (Expr)
709 then
710 Write_Info_Uint (Intval (Expr));
711
712 elsif Nkind (Expr) = N_String_Literal
713 and then Is_Static_Expression (Expr)
714 then
715 Write_Info_Slit (Strval (Expr));
716
717 else
718 Write_Info_Str ("<expr>");
719 end if;
720 end;
721
722 Next (A);
723 end loop;
724 end;
725
726 Write_Info_EOL;
727 end if;
728 end;
729 end loop;
730 end Write_Unit_Information;
731
732 ----------------------
733 -- Write_With_Lines --
734 ----------------------
735
736 procedure Write_With_Lines is
737 With_Table : Unit_Ref_Table (1 .. Pos (Last_Unit - Units.First + 1));
738 Num_Withs : Int := 0;
739 Unum : Unit_Number_Type;
740 Cunit : Node_Id;
741 Uname : Unit_Name_Type;
742 Fname : File_Name_Type;
743 Pname : constant Unit_Name_Type :=
744 Get_Parent_Spec_Name (Unit_Name (Main_Unit));
745 Body_Fname : File_Name_Type;
746 Body_Index : Nat;
747
748 procedure Write_With_File_Names
749 (Nam : in out File_Name_Type;
750 Idx : Nat);
751 -- Write source file name Nam and ALI file name for unit index Idx.
752 -- Possibly change Nam to lowercase (generating a new file name).
753
754 --------------------------
755 -- Write_With_File_Name --
756 --------------------------
757
758 procedure Write_With_File_Names
759 (Nam : in out File_Name_Type;
760 Idx : Nat)
761 is
762 begin
763 if not File_Names_Case_Sensitive then
764 Get_Name_String (Nam);
765 To_Lower (Name_Buffer (1 .. Name_Len));
766 Nam := Name_Find;
767 end if;
768
769 Write_Info_Name (Nam);
770 Write_Info_Tab (49);
771 Write_Info_Name (Lib_File_Name (Nam, Idx));
772 end Write_With_File_Names;
773
774 -- Start of processing for Write_With_Lines
775
776 begin
777 -- Loop to build the with table. A with on the main unit itself
778 -- is ignored (AARM 10.2(14a)). Such a with-clause can occur if
779 -- the main unit is a subprogram with no spec, and a subunit of
780 -- it unnecessarily withs the parent.
781
782 for J in Units.First + 1 .. Last_Unit loop
783
784 -- Add element to with table if it is with'ed or if it is the
785 -- parent spec of the main unit (case of main unit is a child
786 -- unit). The latter with is not needed for semantic purposes,
787 -- but is required by the binder for elaboration purposes.
788 -- For preproc. data and def. files, there is no Unit_Name,
789 -- check for that first.
790
791 if Unit_Name (J) /= No_Unit_Name
792 and then (With_Flags (J) or else Unit_Name (J) = Pname)
793 then
794 Num_Withs := Num_Withs + 1;
795 With_Table (Num_Withs) := J;
796 end if;
797 end loop;
798
799 -- Sort and output the table
800
801 Sort (With_Table (1 .. Num_Withs));
802
803 for J in 1 .. Num_Withs loop
804 Unum := With_Table (J);
805 Cunit := Units.Table (Unum).Cunit;
806 Uname := Units.Table (Unum).Unit_Name;
807 Fname := Units.Table (Unum).Unit_File_Name;
808
809 if Implicit_With (Unum) = Yes then
810 Write_Info_Initiate ('Z');
811
812 elsif Ekind (Cunit_Entity (Unum)) = E_Package
813 and then From_Limited_With (Cunit_Entity (Unum))
814 then
815 Write_Info_Initiate ('Y');
816
817 else
818 Write_Info_Initiate ('W');
819 end if;
820
821 Write_Info_Char (' ');
822 Write_Info_Name (Uname);
823
824 -- Now we need to figure out the names of the files that contain
825 -- the with'ed unit. These will usually be the files for the body,
826 -- except in the case of a package that has no body. Note that we
827 -- have a specific exemption here for predefined library generics
828 -- (see comments for Generic_May_Lack_ALI). We do not generate
829 -- dependency upon the ALI file for such units. Older compilers
830 -- used to not support generating code (and ALI) for generics, and
831 -- we want to avoid having different processing (namely, different
832 -- lists of files to be compiled) for different stages of the
833 -- bootstrap.
834
835 if not ((Nkind (Unit (Cunit)) in N_Generic_Declaration
836 or else
837 Nkind (Unit (Cunit)) in N_Generic_Renaming_Declaration)
838 and then Generic_May_Lack_ALI (Fname))
839
840 -- In SPARK mode, always generate the dependencies on ALI
841 -- files, which are required to compute frame conditions
842 -- of subprograms.
843
844 or else SPARK_Mode
845 then
846 Write_Info_Tab (25);
847
848 if Is_Spec_Name (Uname) then
849 Body_Fname :=
850 Get_File_Name
851 (Get_Body_Name (Uname),
852 Subunit => False, May_Fail => True);
853
854 Body_Index :=
855 Get_Unit_Index
856 (Get_Body_Name (Uname));
857
858 if Body_Fname = No_File then
859 Body_Fname := Get_File_Name (Uname, Subunit => False);
860 Body_Index := Get_Unit_Index (Uname);
861 end if;
862
863 else
864 Body_Fname := Get_File_Name (Uname, Subunit => False);
865 Body_Index := Get_Unit_Index (Uname);
866 end if;
867
868 -- A package is considered to have a body if it requires
869 -- a body or if a body is present in Ada 83 mode.
870
871 if Body_Required (Cunit)
872 or else (Ada_Version = Ada_83
873 and then Full_Source_Name (Body_Fname) /= No_File)
874 then
875 Write_With_File_Names (Body_Fname, Body_Index);
876 else
877 Write_With_File_Names (Fname, Munit_Index (Unum));
878 end if;
879
880 if Ekind (Cunit_Entity (Unum)) = E_Package
881 and then From_Limited_With (Cunit_Entity (Unum))
882 then
883 null;
884 else
885 if Elab_Flags (Unum) then
886 Write_Info_Str (" E");
887 end if;
888
889 if Elab_All_Flags (Unum) then
890 Write_Info_Str (" EA");
891 end if;
892
893 if Elab_Des_Flags (Unum) then
894 Write_Info_Str (" ED");
895 end if;
896
897 if Elab_All_Des_Flags (Unum) then
898 Write_Info_Str (" AD");
899 end if;
900 end if;
901 end if;
902
903 Write_Info_EOL;
904 end loop;
905
906 -- Finally generate the special lines for cases of Restriction_Set
907 -- with No_Dependence and no restriction present.
908
909 declare
910 Unam : Unit_Name_Type;
911
912 begin
913 for J in Restriction_Set_Dependences.First ..
914 Restriction_Set_Dependences.Last
915 loop
916 Unam := Restriction_Set_Dependences.Table (J);
917
918 -- Don't need an entry if already in the unit table
919
920 for U in 0 .. Last_Unit loop
921 if Unit_Name (U) = Unam then
922 goto Continue;
923 end if;
924 end loop;
925
926 -- Otherwise generate the entry
927
928 Write_Info_Initiate ('W');
929 Write_Info_Char (' ');
930 Write_Info_Name (Unam);
931 Write_Info_EOL;
932
933 <<Continue>>
934 null;
935 end loop;
936 end;
937 end Write_With_Lines;
938
939 -- Start of processing for Write_ALI
940
941 begin
942 -- We never write an ALI file if the original operating mode was
943 -- syntax-only (-gnats switch used in compiler invocation line)
944
945 if Original_Operating_Mode = Check_Syntax
946 or flag_compare_debug /= 0
947 then
948 return;
949 end if;
950
951 -- Generation of ALI files may be disabled, e.g. for formal verification
952 -- back-end.
953
954 if Disable_ALI_File then
955 return;
956 end if;
957
958 -- Build sorted source dependency table. We do this right away, because
959 -- it is referenced by Up_To_Date_ALI_File_Exists.
960
961 for Unum in Units.First .. Last_Unit loop
962 if Cunit_Entity (Unum) = Empty
963 or else not From_Limited_With (Cunit_Entity (Unum))
964 then
965 Num_Sdep := Num_Sdep + 1;
966 Sdep_Table (Num_Sdep) := Unum;
967 end if;
968 end loop;
969
970 -- Sort the table so that the D lines are in order
971
972 Lib.Sort (Sdep_Table (1 .. Num_Sdep));
973
974 -- If we are not generating code, and there is an up to date ALI file
975 -- file accessible, read it, and acquire the compilation arguments from
976 -- this file.
977
978 if Operating_Mode /= Generate_Code then
979 if Up_To_Date_ALI_File_Exists then
980 Update_Tables_From_ALI_File;
981 return;
982 end if;
983 end if;
984
985 -- Otherwise acquire compilation arguments and prepare to write
986 -- out a new ali file.
987
988 Create_Output_Library_Info;
989
990 -- Output version line
991
992 Write_Info_Initiate ('V');
993 Write_Info_Str (" """);
994 Write_Info_Str (Verbose_Library_Version);
995 Write_Info_Char ('"');
996
997 Write_Info_EOL;
998
999 -- Output main program line if this is acceptable main program
1000
1001 Output_Main_Program_Line : declare
1002 U : Node_Id := Unit (Units.Table (Main_Unit).Cunit);
1003 S : Node_Id;
1004
1005 procedure M_Parameters;
1006 -- Output parameters for main program line
1007
1008 ------------------
1009 -- M_Parameters --
1010 ------------------
1011
1012 procedure M_Parameters is
1013 begin
1014 if Main_Priority (Main_Unit) /= Default_Main_Priority then
1015 Write_Info_Char (' ');
1016 Write_Info_Nat (Main_Priority (Main_Unit));
1017 end if;
1018
1019 if Opt.Time_Slice_Set then
1020 Write_Info_Str (" T=");
1021 Write_Info_Nat (Opt.Time_Slice_Value);
1022 end if;
1023
1024 if Has_Allocator (Main_Unit) then
1025 Write_Info_Str (" AB");
1026 end if;
1027
1028 if Main_CPU (Main_Unit) /= Default_Main_CPU then
1029 Write_Info_Str (" C=");
1030 Write_Info_Nat (Main_CPU (Main_Unit));
1031 end if;
1032
1033 Write_Info_Str (" W=");
1034 Write_Info_Char
1035 (WC_Encoding_Letters (Wide_Character_Encoding_Method));
1036
1037 Write_Info_EOL;
1038 end M_Parameters;
1039
1040 -- Start of processing for Output_Main_Program_Line
1041
1042 begin
1043 if Nkind (U) = N_Subprogram_Body
1044 or else
1045 (Nkind (U) = N_Package_Body
1046 and then
1047 Nkind (Original_Node (U)) in N_Subprogram_Instantiation)
1048 then
1049 -- If the unit is a subprogram instance, the entity for the
1050 -- subprogram is the alias of the visible entity, which is the
1051 -- related instance of the wrapper package. We retrieve the
1052 -- subprogram declaration of the desired entity.
1053
1054 if Nkind (U) = N_Package_Body then
1055 U := Parent (Parent (
1056 Alias (Related_Instance (Defining_Unit_Name
1057 (Specification (Unit (Library_Unit (Parent (U)))))))));
1058 end if;
1059
1060 S := Specification (U);
1061
1062 -- A generic subprogram is never a main program
1063
1064 if Nkind (U) = N_Subprogram_Body
1065 and then Present (Corresponding_Spec (U))
1066 and then
1067 Ekind_In (Corresponding_Spec (U),
1068 E_Generic_Procedure, E_Generic_Function)
1069 then
1070 null;
1071
1072 elsif No (Parameter_Specifications (S)) then
1073 if Nkind (S) = N_Procedure_Specification then
1074 Write_Info_Initiate ('M');
1075 Write_Info_Str (" P");
1076 M_Parameters;
1077
1078 else
1079 declare
1080 Nam : Node_Id := Defining_Unit_Name (S);
1081
1082 begin
1083 -- If it is a child unit, get its simple name
1084
1085 if Nkind (Nam) = N_Defining_Program_Unit_Name then
1086 Nam := Defining_Identifier (Nam);
1087 end if;
1088
1089 if Is_Integer_Type (Etype (Nam)) then
1090 Write_Info_Initiate ('M');
1091 Write_Info_Str (" F");
1092 M_Parameters;
1093 end if;
1094 end;
1095 end if;
1096 end if;
1097 end if;
1098 end Output_Main_Program_Line;
1099
1100 -- Write command argument ('A') lines
1101
1102 for A in 1 .. Compilation_Switches.Last loop
1103 Write_Info_Initiate ('A');
1104 Write_Info_Char (' ');
1105 Write_Info_Str (Compilation_Switches.Table (A).all);
1106 Write_Info_Terminate;
1107 end loop;
1108
1109 -- Output parameters ('P') line
1110
1111 Write_Info_Initiate ('P');
1112
1113 if Compilation_Errors then
1114 Write_Info_Str (" CE");
1115 end if;
1116
1117 if Opt.Detect_Blocking then
1118 Write_Info_Str (" DB");
1119 end if;
1120
1121 if Opt.Float_Format /= ' ' then
1122 Write_Info_Str (" F");
1123
1124 if Opt.Float_Format = 'I' then
1125 Write_Info_Char ('I');
1126
1127 elsif Opt.Float_Format_Long = 'D' then
1128 Write_Info_Char ('D');
1129
1130 else
1131 Write_Info_Char ('G');
1132 end if;
1133 end if;
1134
1135 if Tasking_Used
1136 and then not Is_Predefined_File_Name (Unit_File_Name (Main_Unit))
1137 then
1138 if Locking_Policy /= ' ' then
1139 Write_Info_Str (" L");
1140 Write_Info_Char (Locking_Policy);
1141 end if;
1142
1143 if Queuing_Policy /= ' ' then
1144 Write_Info_Str (" Q");
1145 Write_Info_Char (Queuing_Policy);
1146 end if;
1147
1148 if Task_Dispatching_Policy /= ' ' then
1149 Write_Info_Str (" T");
1150 Write_Info_Char (Task_Dispatching_Policy);
1151 Write_Info_Char (' ');
1152 end if;
1153 end if;
1154
1155 if Partition_Elaboration_Policy /= ' ' then
1156 Write_Info_Str (" E");
1157 Write_Info_Char (Partition_Elaboration_Policy);
1158 end if;
1159
1160 if not Object then
1161 Write_Info_Str (" NO");
1162 end if;
1163
1164 if No_Run_Time_Mode then
1165 Write_Info_Str (" NR");
1166 end if;
1167
1168 if Normalize_Scalars then
1169 Write_Info_Str (" NS");
1170 end if;
1171
1172 if Sec_Stack_Used then
1173 Write_Info_Str (" SS");
1174 end if;
1175
1176 if Unreserve_All_Interrupts then
1177 Write_Info_Str (" UA");
1178 end if;
1179
1180 if Exception_Mechanism = Back_End_Exceptions then
1181 Write_Info_Str (" ZX");
1182 end if;
1183
1184 Write_Info_EOL;
1185
1186 -- Before outputting the restrictions line, update the setting of
1187 -- the No_Elaboration_Code flag. Violations of this restriction
1188 -- cannot be detected until after the backend has been called since
1189 -- it is the backend that sets this flag. We have to check all units
1190 -- for which we have generated code
1191
1192 for Unit in Units.First .. Last_Unit loop
1193 if Units.Table (Unit).Generate_Code
1194 or else Unit = Main_Unit
1195 then
1196 if not Has_No_Elaboration_Code (Cunit (Unit)) then
1197 Main_Restrictions.Violated (No_Elaboration_Code) := True;
1198 end if;
1199 end if;
1200 end loop;
1201
1202 -- Positional case (only if debug flag -gnatd.R is set)
1203
1204 if Debug_Flag_Dot_RR then
1205
1206 -- Output first restrictions line
1207
1208 Write_Info_Initiate ('R');
1209 Write_Info_Char (' ');
1210
1211 -- First the information for the boolean restrictions
1212
1213 for R in All_Boolean_Restrictions loop
1214 if Main_Restrictions.Set (R)
1215 and then not Restriction_Warnings (R)
1216 then
1217 Write_Info_Char ('r');
1218 elsif Main_Restrictions.Violated (R) then
1219 Write_Info_Char ('v');
1220 else
1221 Write_Info_Char ('n');
1222 end if;
1223 end loop;
1224
1225 -- And now the information for the parameter restrictions
1226
1227 for RP in All_Parameter_Restrictions loop
1228 if Main_Restrictions.Set (RP)
1229 and then not Restriction_Warnings (RP)
1230 then
1231 Write_Info_Char ('r');
1232 Write_Info_Nat (Nat (Main_Restrictions.Value (RP)));
1233 else
1234 Write_Info_Char ('n');
1235 end if;
1236
1237 if not Main_Restrictions.Violated (RP)
1238 or else RP not in Checked_Parameter_Restrictions
1239 then
1240 Write_Info_Char ('n');
1241 else
1242 Write_Info_Char ('v');
1243 Write_Info_Nat (Nat (Main_Restrictions.Count (RP)));
1244
1245 if Main_Restrictions.Unknown (RP) then
1246 Write_Info_Char ('+');
1247 end if;
1248 end if;
1249 end loop;
1250
1251 Write_Info_EOL;
1252
1253 -- Named case (if debug flag -gnatd.R is not set)
1254
1255 else
1256 declare
1257 C : Character;
1258
1259 begin
1260 -- Write RN header line with preceding blank line
1261
1262 Write_Info_EOL;
1263 Write_Info_Initiate ('R');
1264 Write_Info_Char ('N');
1265 Write_Info_EOL;
1266
1267 -- First the lines for the boolean restrictions
1268
1269 for R in All_Boolean_Restrictions loop
1270 if Main_Restrictions.Set (R)
1271 and then not Restriction_Warnings (R)
1272 then
1273 C := 'R';
1274 elsif Main_Restrictions.Violated (R) then
1275 C := 'V';
1276 else
1277 goto Continue;
1278 end if;
1279
1280 Write_Info_Initiate ('R');
1281 Write_Info_Char (C);
1282 Write_Info_Char (' ');
1283 Write_Info_Str (All_Boolean_Restrictions'Image (R));
1284 Write_Info_EOL;
1285
1286 <<Continue>>
1287 null;
1288 end loop;
1289 end;
1290
1291 -- And now the lines for the parameter restrictions
1292
1293 for RP in All_Parameter_Restrictions loop
1294 if Main_Restrictions.Set (RP)
1295 and then not Restriction_Warnings (RP)
1296 then
1297 Write_Info_Initiate ('R');
1298 Write_Info_Str ("R ");
1299 Write_Info_Str (All_Parameter_Restrictions'Image (RP));
1300 Write_Info_Char ('=');
1301 Write_Info_Nat (Nat (Main_Restrictions.Value (RP)));
1302 Write_Info_EOL;
1303 end if;
1304
1305 if not Main_Restrictions.Violated (RP)
1306 or else RP not in Checked_Parameter_Restrictions
1307 then
1308 null;
1309 else
1310 Write_Info_Initiate ('R');
1311 Write_Info_Str ("V ");
1312 Write_Info_Str (All_Parameter_Restrictions'Image (RP));
1313 Write_Info_Char ('=');
1314 Write_Info_Nat (Nat (Main_Restrictions.Count (RP)));
1315
1316 if Main_Restrictions.Unknown (RP) then
1317 Write_Info_Char ('+');
1318 end if;
1319
1320 Write_Info_EOL;
1321 end if;
1322 end loop;
1323 end if;
1324
1325 -- Output R lines for No_Dependence entries
1326
1327 for J in No_Dependences.First .. No_Dependences.Last loop
1328 if In_Extended_Main_Source_Unit (No_Dependences.Table (J).Unit)
1329 and then not No_Dependences.Table (J).Warn
1330 then
1331 Write_Info_Initiate ('R');
1332 Write_Info_Char (' ');
1333 Write_Unit_Name (No_Dependences.Table (J).Unit);
1334 Write_Info_EOL;
1335 end if;
1336 end loop;
1337
1338 -- Output interrupt state lines
1339
1340 for J in Interrupt_States.First .. Interrupt_States.Last loop
1341 Write_Info_Initiate ('I');
1342 Write_Info_Char (' ');
1343 Write_Info_Nat (Interrupt_States.Table (J).Interrupt_Number);
1344 Write_Info_Char (' ');
1345 Write_Info_Char (Interrupt_States.Table (J).Interrupt_State);
1346 Write_Info_Char (' ');
1347 Write_Info_Nat
1348 (Nat (Get_Logical_Line_Number
1349 (Interrupt_States.Table (J).Pragma_Loc)));
1350 Write_Info_EOL;
1351 end loop;
1352
1353 -- Output priority specific dispatching lines
1354
1355 for J in Specific_Dispatching.First .. Specific_Dispatching.Last loop
1356 Write_Info_Initiate ('S');
1357 Write_Info_Char (' ');
1358 Write_Info_Char (Specific_Dispatching.Table (J).Dispatching_Policy);
1359 Write_Info_Char (' ');
1360 Write_Info_Nat (Specific_Dispatching.Table (J).First_Priority);
1361 Write_Info_Char (' ');
1362 Write_Info_Nat (Specific_Dispatching.Table (J).Last_Priority);
1363 Write_Info_Char (' ');
1364 Write_Info_Nat
1365 (Nat (Get_Logical_Line_Number
1366 (Specific_Dispatching.Table (J).Pragma_Loc)));
1367 Write_Info_EOL;
1368 end loop;
1369
1370 -- Loop through file table to output information for all units for which
1371 -- we have generated code, as marked by the Generate_Code flag.
1372
1373 for Unit in Units.First .. Last_Unit loop
1374 if Units.Table (Unit).Generate_Code
1375 or else Unit = Main_Unit
1376 then
1377 Write_Info_EOL; -- blank line
1378 Write_Unit_Information (Unit);
1379 end if;
1380 end loop;
1381
1382 Write_Info_EOL; -- blank line
1383
1384 -- Output external version reference lines
1385
1386 for J in 1 .. Version_Ref.Last loop
1387 Write_Info_Initiate ('E');
1388 Write_Info_Char (' ');
1389
1390 for K in 1 .. String_Length (Version_Ref.Table (J)) loop
1391 Write_Info_Char_Code (Get_String_Char (Version_Ref.Table (J), K));
1392 end loop;
1393
1394 Write_Info_EOL;
1395 end loop;
1396
1397 -- Prepare to output the source dependency lines
1398
1399 declare
1400 Unum : Unit_Number_Type;
1401 -- Number of unit being output
1402
1403 Sind : Source_File_Index;
1404 -- Index of corresponding source file
1405
1406 Fname : File_Name_Type;
1407
1408 begin
1409 for J in 1 .. Num_Sdep loop
1410 Unum := Sdep_Table (J);
1411 Units.Table (Unum).Dependency_Num := J;
1412 Sind := Units.Table (Unum).Source_Index;
1413
1414 Write_Info_Initiate ('D');
1415 Write_Info_Char (' ');
1416
1417 -- Normal case of a unit entry with a source index
1418
1419 if Sind /= No_Source_File then
1420 Fname := File_Name (Sind);
1421
1422 -- Ensure that on platforms where the file names are not
1423 -- case sensitive, the recorded file name is in lower case.
1424
1425 if not File_Names_Case_Sensitive then
1426 Get_Name_String (Fname);
1427 To_Lower (Name_Buffer (1 .. Name_Len));
1428 Fname := Name_Find;
1429 end if;
1430
1431 Write_Info_Name_May_Be_Quoted (Fname);
1432 Write_Info_Tab (25);
1433 Write_Info_Str (String (Time_Stamp (Sind)));
1434 Write_Info_Char (' ');
1435 Write_Info_Str (Get_Hex_String (Source_Checksum (Sind)));
1436
1437 -- If subunit, add unit name, omitting the %b at the end
1438
1439 if Present (Cunit (Unum))
1440 and then Nkind (Unit (Cunit (Unum))) = N_Subunit
1441 then
1442 Get_Decoded_Name_String (Unit_Name (Unum));
1443 Write_Info_Char (' ');
1444 Write_Info_Str (Name_Buffer (1 .. Name_Len - 2));
1445 end if;
1446
1447 -- If Source_Reference pragma used output information
1448
1449 if Num_SRef_Pragmas (Sind) > 0 then
1450 Write_Info_Char (' ');
1451
1452 if Num_SRef_Pragmas (Sind) = 1 then
1453 Write_Info_Nat (Int (First_Mapped_Line (Sind)));
1454 else
1455 Write_Info_Nat (0);
1456 end if;
1457
1458 Write_Info_Char (':');
1459 Write_Info_Name (Reference_Name (Sind));
1460 end if;
1461
1462 -- Case where there is no source index (happens for missing
1463 -- files). In this case we write a dummy time stamp.
1464
1465 else
1466 Write_Info_Name (Unit_File_Name (Unum));
1467 Write_Info_Tab (25);
1468 Write_Info_Str (String (Dummy_Time_Stamp));
1469 Write_Info_Char (' ');
1470 Write_Info_Str (Get_Hex_String (0));
1471 end if;
1472
1473 Write_Info_EOL;
1474 end loop;
1475 end;
1476
1477 -- Output cross-references
1478
1479 if Opt.Xref_Active then
1480 Output_References;
1481 end if;
1482
1483 -- Output SCO information if present
1484
1485 if Generate_SCO then
1486 SCO_Output;
1487 end if;
1488
1489 -- Output SPARK cross-reference information if needed
1490
1491 if Opt.Xref_Active and then SPARK_Mode then
1492 SPARK_Specific.Collect_SPARK_Xrefs (Sdep_Table => Sdep_Table,
1493 Num_Sdep => Num_Sdep);
1494 SPARK_Specific.Output_SPARK_Xrefs;
1495 end if;
1496
1497 -- Output final blank line and we are done. This final blank line is
1498 -- probably junk, but we don't feel like making an incompatible change!
1499
1500 Write_Info_Terminate;
1501 Close_Output_Library_Info;
1502 end Write_ALI;
1503
1504 ---------------------
1505 -- Write_Unit_Name --
1506 ---------------------
1507
1508 procedure Write_Unit_Name (N : Node_Id) is
1509 begin
1510 if Nkind (N) = N_Identifier then
1511 Write_Info_Name (Chars (N));
1512
1513 else
1514 pragma Assert (Nkind (N) = N_Selected_Component);
1515 Write_Unit_Name (Prefix (N));
1516 Write_Info_Char ('.');
1517 Write_Unit_Name (Selector_Name (N));
1518 end if;
1519 end Write_Unit_Name;
1520
1521 end Lib.Writ;
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