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Fix for ICE with -g on testcase with incomplete types.
[official-gcc.git] / gcc / ada / lib-writ.adb
blobdfa1a5bc7579fbac52b284c45948cc7a8d16b930
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) 1992-2015, 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 Sem_Eval; use Sem_Eval;
48 with Sinfo; use Sinfo;
49 with Sinput; use Sinput;
50 with Snames; use Snames;
51 with Stringt; use Stringt;
52 with Tbuild; use Tbuild;
53 with Uname; use Uname;
54
55 with System.Case_Util; use System.Case_Util;
56 with System.WCh_Con; use System.WCh_Con;
57
58 package body Lib.Writ is
59
60 -----------------------
61 -- Local Subprograms --
62 -----------------------
63
64 procedure Write_Unit_Name (N : Node_Id);
65 -- Used to write out the unit name for R (pragma Restriction) lines
66 -- for uses of Restriction (No_Dependence => unit-name).
67
68 ----------------------------------
69 -- Add_Preprocessing_Dependency --
70 ----------------------------------
71
72 procedure Add_Preprocessing_Dependency (S : Source_File_Index) is
73 begin
74 Units.Increment_Last;
75 Units.Table (Units.Last) :=
76 (Unit_File_Name => File_Name (S),
77 Unit_Name => No_Unit_Name,
78 Expected_Unit => No_Unit_Name,
79 Source_Index => S,
80 Cunit => Empty,
81 Cunit_Entity => Empty,
82 Dependency_Num => 0,
83 Dynamic_Elab => False,
84 Fatal_Error => None,
85 Generate_Code => False,
86 Has_RACW => False,
87 Filler => False,
88 Ident_String => Empty,
89 Loading => False,
90 Main_Priority => -1,
91 Main_CPU => -1,
92 Munit_Index => 0,
93 No_Elab_Code_All => False,
94 Serial_Number => 0,
95 Version => 0,
96 Error_Location => No_Location,
97 OA_Setting => 'O',
98 SPARK_Mode_Pragma => Empty);
99 end Add_Preprocessing_Dependency;
100
101 ------------------------------
102 -- Ensure_System_Dependency --
103 ------------------------------
104
105 procedure Ensure_System_Dependency is
106 System_Uname : Unit_Name_Type;
107 -- Unit name for system spec if needed for dummy entry
108
109 System_Fname : File_Name_Type;
110 -- File name for system spec if needed for dummy entry
111
112 begin
113 -- Nothing to do if we already compiled System
114
115 for Unum in Units.First .. Last_Unit loop
116 if Units.Table (Unum).Source_Index = System_Source_File_Index then
117 return;
118 end if;
119 end loop;
120
121 -- If no entry for system.ads in the units table, then add a entry
122 -- to the units table for system.ads, which will be referenced when
123 -- the ali file is generated. We need this because every unit depends
124 -- on system as a result of Targparm scanning the system.ads file to
125 -- determine the target dependent parameters for the compilation.
126
127 Name_Len := 6;
128 Name_Buffer (1 .. 6) := "system";
129 System_Uname := Name_To_Unit_Name (Name_Enter);
130 System_Fname := File_Name (System_Source_File_Index);
131
132 Units.Increment_Last;
133 Units.Table (Units.Last) := (
134 Unit_File_Name => System_Fname,
135 Unit_Name => System_Uname,
136 Expected_Unit => System_Uname,
137 Source_Index => System_Source_File_Index,
138 Cunit => Empty,
139 Cunit_Entity => Empty,
140 Dependency_Num => 0,
141 Dynamic_Elab => False,
142 Fatal_Error => None,
143 Generate_Code => False,
144 Has_RACW => False,
145 Filler => False,
146 Ident_String => Empty,
147 Loading => False,
148 Main_Priority => -1,
149 Main_CPU => -1,
150 Munit_Index => 0,
151 No_Elab_Code_All => False,
152 Serial_Number => 0,
153 Version => 0,
154 Error_Location => No_Location,
155 OA_Setting => 'O',
156 SPARK_Mode_Pragma => Empty);
157
158 -- Parse system.ads so that the checksum is set right
159 -- Style checks are not applied.
160
161 declare
162 Save_Mindex : constant Nat := Multiple_Unit_Index;
163 Save_Style : constant Boolean := Style_Check;
164 begin
165 Multiple_Unit_Index := 0;
166 Style_Check := False;
167 Initialize_Scanner (Units.Last, System_Source_File_Index);
168 Discard_List (Par (Configuration_Pragmas => False));
169 Style_Check := Save_Style;
170 Multiple_Unit_Index := Save_Mindex;
171 end;
172 end Ensure_System_Dependency;
173
174 ---------------
175 -- Write_ALI --
176 ---------------
177
178 procedure Write_ALI (Object : Boolean) is
179
180 ----------------
181 -- Local Data --
182 ----------------
183
184 Last_Unit : constant Unit_Number_Type := Units.Last;
185 -- Record unit number of last unit. We capture this in case we
186 -- have to add a dummy entry to the unit table for package System.
187
188 With_Flags : array (Units.First .. Last_Unit) of Boolean;
189 -- Array of flags to show which units are with'ed
190
191 Elab_Flags : array (Units.First .. Last_Unit) of Boolean;
192 -- Array of flags to show which units have pragma Elaborate set
193
194 Elab_All_Flags : array (Units.First .. Last_Unit) of Boolean;
195 -- Array of flags to show which units have pragma Elaborate All set
196
197 Elab_Des_Flags : array (Units.First .. Last_Unit) of Boolean;
198 -- Array of flags to show which units have Elaborate_Desirable set
199
200 Elab_All_Des_Flags : array (Units.First .. Last_Unit) of Boolean;
201 -- Array of flags to show which units have Elaborate_All_Desirable set
202
203 type Yes_No is (Unknown, Yes, No);
204 Implicit_With : array (Units.First .. Last_Unit) of Yes_No;
205 -- Indicates if an implicit with has been given for the unit. Yes if
206 -- certainly present, no if certainly absent, unkonwn if not known.
207
208 Sdep_Table : Unit_Ref_Table (1 .. Pos (Last_Unit - Units.First + 2));
209 -- Sorted table of source dependencies. One extra entry in case we
210 -- have to add a dummy entry for System.
211
212 Num_Sdep : Nat := 0;
213 -- Number of active entries in Sdep_Table
214
215 flag_compare_debug : Int;
216 pragma Import (C, flag_compare_debug);
217 -- Import from toplev.c
218
219 -----------------------
220 -- Local Subprograms --
221 -----------------------
222
223 procedure Collect_Withs (Cunit : Node_Id);
224 -- Collect with lines for entries in the context clause of the
225 -- given compilation unit, Cunit.
226
227 procedure Update_Tables_From_ALI_File;
228 -- Given an up to date ALI file (see Up_To_Date_ALI_file_Exists
229 -- function), update tables from the ALI information, including
230 -- specifically the Compilation_Switches table.
231
232 function Up_To_Date_ALI_File_Exists return Boolean;
233 -- If there exists an ALI file that is up to date, then this function
234 -- initializes the tables in the ALI spec to contain information on
235 -- this file (using Scan_ALI) and returns True. If no file exists,
236 -- or the file is not up to date, then False is returned.
237
238 procedure Write_Unit_Information (Unit_Num : Unit_Number_Type);
239 -- Write out the library information for one unit for which code is
240 -- generated (includes unit line and with lines).
241
242 procedure Write_With_Lines;
243 -- Write out with lines collected by calls to Collect_Withs
244
245 -------------------
246 -- Collect_Withs --
247 -------------------
248
249 procedure Collect_Withs (Cunit : Node_Id) is
250 Item : Node_Id;
251 Unum : Unit_Number_Type;
252
253 begin
254 Item := First (Context_Items (Cunit));
255 while Present (Item) loop
256
257 -- Process with clause
258
259 -- Ada 2005 (AI-50217): limited with_clauses do not create
260 -- dependencies, but must be recorded as components of the
261 -- partition, in case there is no regular with_clause for
262 -- the unit anywhere else.
263
264 if Nkind (Item) = N_With_Clause then
265 Unum := Get_Cunit_Unit_Number (Library_Unit (Item));
266 With_Flags (Unum) := True;
267
268 if not Limited_Present (Item) then
269 if Elaborate_Present (Item) then
270 Elab_Flags (Unum) := True;
271 end if;
272
273 if Elaborate_All_Present (Item) then
274 Elab_All_Flags (Unum) := True;
275 end if;
276
277 if Elaborate_All_Desirable (Item) then
278 Elab_All_Des_Flags (Unum) := True;
279 end if;
280
281 if Elaborate_Desirable (Item) then
282 Elab_Des_Flags (Unum) := True;
283 end if;
284
285 else
286 Set_From_Limited_With (Cunit_Entity (Unum));
287 end if;
288
289 if Implicit_With (Unum) /= Yes then
290 if Implicit_With_From_Instantiation (Item) then
291 Implicit_With (Unum) := Yes;
292 else
293 Implicit_With (Unum) := No;
294 end if;
295 end if;
296 end if;
297
298 Next (Item);
299 end loop;
300 end Collect_Withs;
301
302 --------------------------------
303 -- Up_To_Date_ALI_File_Exists --
304 --------------------------------
305
306 function Up_To_Date_ALI_File_Exists return Boolean is
307 Name : File_Name_Type;
308 Text : Text_Buffer_Ptr;
309 Id : Sdep_Id;
310 Sind : Source_File_Index;
311
312 begin
313 Opt.Check_Object_Consistency := True;
314 Read_Library_Info (Name, Text);
315
316 -- Return if we could not find an ALI file
317
318 if Text = null then
319 return False;
320 end if;
321
322 -- Return if ALI file has bad format
323
324 Initialize_ALI;
325
326 if Scan_ALI (Name, Text, False, Err => True) = No_ALI_Id then
327 return False;
328 end if;
329
330 -- If we have an OK ALI file, check if it is up to date
331 -- Note that we assume that the ALI read has all the entries
332 -- we have in our table, plus some additional ones (that can
333 -- come from expansion).
334
335 Id := First_Sdep_Entry;
336 for J in 1 .. Num_Sdep loop
337 Sind := Units.Table (Sdep_Table (J)).Source_Index;
338
339 while Sdep.Table (Id).Sfile /= File_Name (Sind) loop
340 if Id = Sdep.Last then
341 return False;
342 else
343 Id := Id + 1;
344 end if;
345 end loop;
346
347 if Sdep.Table (Id).Stamp /= Time_Stamp (Sind) then
348 return False;
349 end if;
350 end loop;
351
352 return True;
353 end Up_To_Date_ALI_File_Exists;
354
355 ---------------------------------
356 -- Update_Tables_From_ALI_File --
357 ---------------------------------
358
359 procedure Update_Tables_From_ALI_File is
360 begin
361 -- Build Compilation_Switches table
362
363 Compilation_Switches.Init;
364
365 for J in First_Arg_Entry .. Args.Last loop
366 Compilation_Switches.Increment_Last;
367 Compilation_Switches.Table (Compilation_Switches.Last) :=
368 Args.Table (J);
369 end loop;
370 end Update_Tables_From_ALI_File;
371
372 ----------------------------
373 -- Write_Unit_Information --
374 ----------------------------
375
376 procedure Write_Unit_Information (Unit_Num : Unit_Number_Type) is
377 Unode : constant Node_Id := Cunit (Unit_Num);
378 Ukind : constant Node_Kind := Nkind (Unit (Unode));
379 Uent : constant Entity_Id := Cunit_Entity (Unit_Num);
380 Pnode : Node_Id;
381
382 begin
383 Write_Info_Initiate ('U');
384 Write_Info_Char (' ');
385 Write_Info_Name (Unit_Name (Unit_Num));
386 Write_Info_Tab (25);
387 Write_Info_Name (Unit_File_Name (Unit_Num));
388
389 Write_Info_Tab (49);
390 Write_Info_Str (Version_Get (Unit_Num));
391
392 -- Add BD parameter if Elaborate_Body pragma desirable
393
394 if Ekind (Uent) = E_Package
395 and then Elaborate_Body_Desirable (Uent)
396 then
397 Write_Info_Str (" BD");
398 end if;
399
400 -- Add BN parameter if body needed for SAL
401
402 if (Is_Subprogram (Uent)
403 or else Ekind (Uent) = E_Package
404 or else Is_Generic_Unit (Uent))
405 and then Body_Needed_For_SAL (Uent)
406 then
407 Write_Info_Str (" BN");
408 end if;
409
410 if Dynamic_Elab (Unit_Num) then
411 Write_Info_Str (" DE");
412 end if;
413
414 -- Set the Elaborate_Body indication if either an explicit pragma
415 -- was present, or if this is an instantiation.
416
417 if Has_Pragma_Elaborate_Body (Uent)
418 or else (Ukind = N_Package_Declaration
419 and then Is_Generic_Instance (Uent)
420 and then Present (Corresponding_Body (Unit (Unode))))
421 then
422 Write_Info_Str (" EB");
423 end if;
424
425 -- Now see if we should tell the binder that an elaboration entity
426 -- is present, which must be set to true during elaboration.
427 -- We generate the indication if the following condition is met:
428
429 -- If this is a spec ...
430
431 if (Is_Subprogram (Uent)
432 or else Ekind (Uent) = E_Package
433 or else Is_Generic_Unit (Uent))
434
435 -- and an elaboration entity was declared ...
436
437 and then Present (Elaboration_Entity (Uent))
438
439 -- and either the elaboration flag is required ...
440
441 and then (Elaboration_Entity_Required (Uent)
442
443 -- or this unit has elaboration code ...
444
445 or else not Has_No_Elaboration_Code (Unode)
446
447 -- or this unit has a separate body and this
448 -- body has elaboration code.
449
450 or else
451 (Ekind (Uent) = E_Package
452 and then Present (Body_Entity (Uent))
453 and then
454 not Has_No_Elaboration_Code
455 (Parent (Declaration_Node (Body_Entity (Uent))))))
456 then
457 Write_Info_Str (" EE");
458 end if;
459
460 if Has_No_Elaboration_Code (Unode) then
461 Write_Info_Str (" NE");
462 end if;
463
464 Write_Info_Str (" O");
465 Write_Info_Char (OA_Setting (Unit_Num));
466
467 if Ekind_In (Uent, E_Package, E_Package_Body)
468 and then Present (Finalizer (Uent))
469 then
470 Write_Info_Str (" PF");
471 end if;
472
473 if Is_Preelaborated (Uent) then
474 Write_Info_Str (" PR");
475 end if;
476
477 if Is_Pure (Uent) then
478 Write_Info_Str (" PU");
479 end if;
480
481 if Has_RACW (Unit_Num) then
482 Write_Info_Str (" RA");
483 end if;
484
485 if Is_Remote_Call_Interface (Uent) then
486 Write_Info_Str (" RC");
487 end if;
488
489 if Is_Remote_Types (Uent) then
490 Write_Info_Str (" RT");
491 end if;
492
493 if Serious_Errors_Detected /= 0 then
494 Write_Info_Str (" SE");
495 end if;
496
497 if Is_Shared_Passive (Uent) then
498 Write_Info_Str (" SP");
499 end if;
500
501 if Ukind = N_Subprogram_Declaration
502 or else Ukind = N_Subprogram_Body
503 then
504 Write_Info_Str (" SU");
505
506 elsif Ukind = N_Package_Declaration
507 or else
508 Ukind = N_Package_Body
509 then
510 -- If this is a wrapper package for a subprogram instantiation,
511 -- the user view is the subprogram. Note that in this case the
512 -- ali file contains both the spec and body of the instance.
513
514 if Is_Wrapper_Package (Uent) then
515 Write_Info_Str (" SU");
516 else
517 Write_Info_Str (" PK");
518 end if;
519
520 elsif Ukind = N_Generic_Package_Declaration then
521 Write_Info_Str (" PK");
522
523 end if;
524
525 if Ukind in N_Generic_Declaration
526 or else
527 (Present (Library_Unit (Unode))
528 and then
529 Nkind (Unit (Library_Unit (Unode))) in N_Generic_Declaration)
530 then
531 Write_Info_Str (" GE");
532 end if;
533
534 if not Is_Internal_File_Name (Unit_File_Name (Unit_Num), True) then
535 case Identifier_Casing (Source_Index (Unit_Num)) is
536 when All_Lower_Case => Write_Info_Str (" IL");
537 when All_Upper_Case => Write_Info_Str (" IU");
538 when others => null;
539 end case;
540
541 case Keyword_Casing (Source_Index (Unit_Num)) is
542 when Mixed_Case => Write_Info_Str (" KM");
543 when All_Upper_Case => Write_Info_Str (" KU");
544 when others => null;
545 end case;
546 end if;
547
548 if Initialize_Scalars or else Invalid_Value_Used then
549 Write_Info_Str (" IS");
550 end if;
551
552 Write_Info_EOL;
553
554 -- Generate with lines, first those that are directly with'ed
555
556 for J in With_Flags'Range loop
557 With_Flags (J) := False;
558 Elab_Flags (J) := False;
559 Elab_All_Flags (J) := False;
560 Elab_Des_Flags (J) := False;
561 Elab_All_Des_Flags (J) := False;
562 Implicit_With (J) := Unknown;
563 end loop;
564
565 Collect_Withs (Unode);
566
567 -- For a body, we must also check for any subunits which belong to
568 -- it and which have context clauses of their own, since these
569 -- with'ed units are part of its own elaboration dependencies.
570
571 if Nkind (Unit (Unode)) in N_Unit_Body then
572 for S in Units.First .. Last_Unit loop
573
574 -- We are only interested in subunits. For preproc. data and
575 -- def. files, Cunit is Empty, so we need to test that first.
576
577 if Cunit (S) /= Empty
578 and then Nkind (Unit (Cunit (S))) = N_Subunit
579 then
580 Pnode := Library_Unit (Cunit (S));
581
582 -- In gnatc mode, the errors in the subunits will not have
583 -- been recorded, but the analysis of the subunit may have
584 -- failed. There is no information to add to ALI file in
585 -- this case.
586
587 if No (Pnode) then
588 exit;
589 end if;
590
591 -- Find ultimate parent of the subunit
592
593 while Nkind (Unit (Pnode)) = N_Subunit loop
594 Pnode := Library_Unit (Pnode);
595 end loop;
596
597 -- See if it belongs to current unit, and if so, include
598 -- its with_clauses.
599
600 if Pnode = Unode then
601 Collect_Withs (Cunit (S));
602 end if;
603 end if;
604 end loop;
605 end if;
606
607 Write_With_Lines;
608
609 -- Generate the linker option lines
610
611 for J in 1 .. Linker_Option_Lines.Last loop
612
613 -- Pragma Linker_Options is not allowed in predefined generic
614 -- units. This is because they won't be read, due to the fact that
615 -- with lines for generic units lack the file name and lib name
616 -- parameters (see Lib_Writ spec for an explanation).
617
618 if Is_Generic_Unit (Cunit_Entity (Main_Unit))
619 and then
620 Is_Predefined_File_Name (Unit_File_Name (Current_Sem_Unit))
621 and then Linker_Option_Lines.Table (J).Unit = Unit_Num
622 then
623 Set_Standard_Error;
624 Write_Line
625 ("linker options not allowed in predefined generic unit");
626 raise Unrecoverable_Error;
627 end if;
628
629 -- Output one linker option line
630
631 declare
632 S : Linker_Option_Entry renames Linker_Option_Lines.Table (J);
633 begin
634 if S.Unit = Unit_Num then
635 Write_Info_Initiate ('L');
636 Write_Info_Char (' ');
637 Write_Info_Slit (S.Option);
638 Write_Info_EOL;
639 end if;
640 end;
641 end loop;
642
643 -- Output notes
644
645 for J in 1 .. Notes.Last loop
646 declare
647 N : constant Node_Id := Notes.Table (J);
648 L : constant Source_Ptr := Sloc (N);
649 U : constant Unit_Number_Type :=
650 Unit (Get_Source_File_Index (L));
651 C : Character;
652
653 Note_Unit : Unit_Number_Type;
654 -- The unit in whose U section this note must be emitted:
655 -- notes for subunits are emitted along with the main unit;
656 -- all other notes are emitted as part of the enclosing
657 -- compilation unit.
658
659 begin
660 if U /= No_Unit and then Nkind (Unit (Cunit (U))) = N_Subunit
661 then
662 Note_Unit := Main_Unit;
663 else
664 Note_Unit := U;
665 end if;
666
667 if Note_Unit = Unit_Num then
668 Write_Info_Initiate ('N');
669 Write_Info_Char (' ');
670
671 case Chars (Pragma_Identifier (N)) is
672 when Name_Annotate =>
673 C := 'A';
674 when Name_Comment =>
675 C := 'C';
676 when Name_Ident =>
677 C := 'I';
678 when Name_Title =>
679 C := 'T';
680 when Name_Subtitle =>
681 C := 'S';
682 when others =>
683 raise Program_Error;
684 end case;
685
686 Write_Info_Char (C);
687 Write_Info_Int (Int (Get_Logical_Line_Number (L)));
688 Write_Info_Char (':');
689 Write_Info_Int (Int (Get_Column_Number (L)));
690
691 -- Indicate source file of annotation if different from
692 -- compilation unit source file (case of annotation coming
693 -- from a separate).
694
695 if Get_Source_File_Index (L) /= Source_Index (Unit_Num) then
696 Write_Info_Char (':');
697 Write_Info_Name (File_Name (Get_Source_File_Index (L)));
698 end if;
699
700 declare
701 A : Node_Id;
702
703 begin
704 A := First (Pragma_Argument_Associations (N));
705 while Present (A) loop
706 Write_Info_Char (' ');
707
708 if Chars (A) /= No_Name then
709 Write_Info_Name (Chars (A));
710 Write_Info_Char (':');
711 end if;
712
713 declare
714 Expr : constant Node_Id := Expression (A);
715
716 begin
717 if Nkind (Expr) = N_Identifier then
718 Write_Info_Name (Chars (Expr));
719
720 elsif Nkind (Expr) = N_Integer_Literal
721 and then Is_OK_Static_Expression (Expr)
722 then
723 Write_Info_Uint (Intval (Expr));
724
725 elsif Nkind (Expr) = N_String_Literal
726 and then Is_OK_Static_Expression (Expr)
727 then
728 Write_Info_Slit (Strval (Expr));
729
730 else
731 Write_Info_Str ("<expr>");
732 end if;
733 end;
734
735 Next (A);
736 end loop;
737 end;
738
739 Write_Info_EOL;
740 end if;
741 end;
742 end loop;
743 end Write_Unit_Information;
744
745 ----------------------
746 -- Write_With_Lines --
747 ----------------------
748
749 procedure Write_With_Lines is
750 With_Table : Unit_Ref_Table (1 .. Pos (Last_Unit - Units.First + 1));
751 Num_Withs : Int := 0;
752 Unum : Unit_Number_Type;
753 Cunit : Node_Id;
754 Uname : Unit_Name_Type;
755 Fname : File_Name_Type;
756 Pname : constant Unit_Name_Type :=
757 Get_Parent_Spec_Name (Unit_Name (Main_Unit));
758 Body_Fname : File_Name_Type;
759 Body_Index : Nat;
760
761 procedure Write_With_File_Names
762 (Nam : in out File_Name_Type;
763 Idx : Nat);
764 -- Write source file name Nam and ALI file name for unit index Idx.
765 -- Possibly change Nam to lowercase (generating a new file name).
766
767 --------------------------
768 -- Write_With_File_Name --
769 --------------------------
770
771 procedure Write_With_File_Names
772 (Nam : in out File_Name_Type;
773 Idx : Nat)
774 is
775 begin
776 if not File_Names_Case_Sensitive then
777 Get_Name_String (Nam);
778 To_Lower (Name_Buffer (1 .. Name_Len));
779 Nam := Name_Find;
780 end if;
781
782 Write_Info_Name (Nam);
783 Write_Info_Tab (49);
784 Write_Info_Name (Lib_File_Name (Nam, Idx));
785 end Write_With_File_Names;
786
787 -- Start of processing for Write_With_Lines
788
789 begin
790 -- Loop to build the with table. A with on the main unit itself
791 -- is ignored (AARM 10.2(14a)). Such a with-clause can occur if
792 -- the main unit is a subprogram with no spec, and a subunit of
793 -- it unnecessarily withs the parent.
794
795 for J in Units.First + 1 .. Last_Unit loop
796
797 -- Add element to with table if it is with'ed or if it is the
798 -- parent spec of the main unit (case of main unit is a child
799 -- unit). The latter with is not needed for semantic purposes,
800 -- but is required by the binder for elaboration purposes. For
801 -- preprocessing data and definition files, there is no Unit_Name,
802 -- check for that first.
803
804 if Unit_Name (J) /= No_Unit_Name
805 and then (With_Flags (J) or else Unit_Name (J) = Pname)
806 then
807 Num_Withs := Num_Withs + 1;
808 With_Table (Num_Withs) := J;
809 end if;
810 end loop;
811
812 -- Sort and output the table
813
814 Sort (With_Table (1 .. Num_Withs));
815
816 for J in 1 .. Num_Withs loop
817 Unum := With_Table (J);
818 Cunit := Units.Table (Unum).Cunit;
819 Uname := Units.Table (Unum).Unit_Name;
820 Fname := Units.Table (Unum).Unit_File_Name;
821
822 if Implicit_With (Unum) = Yes then
823 Write_Info_Initiate ('Z');
824
825 elsif Ekind (Cunit_Entity (Unum)) = E_Package
826 and then From_Limited_With (Cunit_Entity (Unum))
827 then
828 Write_Info_Initiate ('Y');
829
830 else
831 Write_Info_Initiate ('W');
832 end if;
833
834 Write_Info_Char (' ');
835 Write_Info_Name (Uname);
836
837 -- Now we need to figure out the names of the files that contain
838 -- the with'ed unit. These will usually be the files for the body,
839 -- except in the case of a package that has no body. Note that we
840 -- have a specific exemption here for predefined library generics
841 -- (see comments for Generic_May_Lack_ALI). We do not generate
842 -- dependency upon the ALI file for such units. Older compilers
843 -- used to not support generating code (and ALI) for generics, and
844 -- we want to avoid having different processing (namely, different
845 -- lists of files to be compiled) for different stages of the
846 -- bootstrap.
847
848 if not ((Nkind (Unit (Cunit)) in N_Generic_Declaration
849 or else
850 Nkind (Unit (Cunit)) in N_Generic_Renaming_Declaration)
851 and then Generic_May_Lack_ALI (Fname))
852
853 -- In SPARK mode, always generate the dependencies on ALI
854 -- files, which are required to compute frame conditions
855 -- of subprograms.
856
857 or else GNATprove_Mode
858 then
859 Write_Info_Tab (25);
860
861 if Is_Spec_Name (Uname) then
862 Body_Fname :=
863 Get_File_Name
864 (Get_Body_Name (Uname),
865 Subunit => False, May_Fail => True);
866
867 Body_Index :=
868 Get_Unit_Index
869 (Get_Body_Name (Uname));
870
871 if Body_Fname = No_File then
872 Body_Fname := Get_File_Name (Uname, Subunit => False);
873 Body_Index := Get_Unit_Index (Uname);
874 end if;
875
876 else
877 Body_Fname := Get_File_Name (Uname, Subunit => False);
878 Body_Index := Get_Unit_Index (Uname);
879 end if;
880
881 -- A package is considered to have a body if it requires
882 -- a body or if a body is present in Ada 83 mode.
883
884 if Body_Required (Cunit)
885 or else (Ada_Version = Ada_83
886 and then Full_Source_Name (Body_Fname) /= No_File)
887 then
888 Write_With_File_Names (Body_Fname, Body_Index);
889 else
890 Write_With_File_Names (Fname, Munit_Index (Unum));
891 end if;
892
893 if Ekind (Cunit_Entity (Unum)) = E_Package
894 and then From_Limited_With (Cunit_Entity (Unum))
895 then
896 null;
897 else
898 if Elab_Flags (Unum) then
899 Write_Info_Str (" E");
900 end if;
901
902 if Elab_All_Flags (Unum) then
903 Write_Info_Str (" EA");
904 end if;
905
906 if Elab_Des_Flags (Unum) then
907 Write_Info_Str (" ED");
908 end if;
909
910 if Elab_All_Des_Flags (Unum) then
911 Write_Info_Str (" AD");
912 end if;
913 end if;
914 end if;
915
916 Write_Info_EOL;
917 end loop;
918
919 -- Finally generate the special lines for cases of Restriction_Set
920 -- with No_Dependence and no restriction present.
921
922 declare
923 Unam : Unit_Name_Type;
924
925 begin
926 for J in Restriction_Set_Dependences.First ..
927 Restriction_Set_Dependences.Last
928 loop
929 Unam := Restriction_Set_Dependences.Table (J);
930
931 -- Don't need an entry if already in the unit table
932
933 for U in 0 .. Last_Unit loop
934 if Unit_Name (U) = Unam then
935 goto Continue;
936 end if;
937 end loop;
938
939 -- Otherwise generate the entry
940
941 Write_Info_Initiate ('W');
942 Write_Info_Char (' ');
943 Write_Info_Name (Unam);
944 Write_Info_EOL;
945
946 <<Continue>>
947 null;
948 end loop;
949 end;
950 end Write_With_Lines;
951
952 -- Start of processing for Write_ALI
953
954 begin
955 -- We never write an ALI file if the original operating mode was
956 -- syntax-only (-gnats switch used in compiler invocation line)
957
958 if Original_Operating_Mode = Check_Syntax
959 or flag_compare_debug /= 0
960 then
961 return;
962 end if;
963
964 -- Generation of ALI files may be disabled, e.g. for formal verification
965 -- back-end.
966
967 if Disable_ALI_File then
968 return;
969 end if;
970
971 -- Build sorted source dependency table. We do this right away, because
972 -- it is referenced by Up_To_Date_ALI_File_Exists.
973
974 for Unum in Units.First .. Last_Unit loop
975 if Cunit_Entity (Unum) = Empty
976 or else not From_Limited_With (Cunit_Entity (Unum))
977 then
978 Num_Sdep := Num_Sdep + 1;
979 Sdep_Table (Num_Sdep) := Unum;
980 end if;
981 end loop;
982
983 -- Sort the table so that the D lines are in order
984
985 Lib.Sort (Sdep_Table (1 .. Num_Sdep));
986
987 -- If we are not generating code, and there is an up to date ALI file
988 -- file accessible, read it, and acquire the compilation arguments from
989 -- this file. In GNATprove mode, always generate the ALI file, which
990 -- contains a special section for formal verification.
991
992 if Operating_Mode /= Generate_Code and then not GNATprove_Mode then
993 if Up_To_Date_ALI_File_Exists then
994 Update_Tables_From_ALI_File;
995 return;
996 end if;
997 end if;
998
999 -- Otherwise acquire compilation arguments and prepare to write
1000 -- out a new ali file.
1001
1002 Create_Output_Library_Info;
1003
1004 -- Output version line
1005
1006 Write_Info_Initiate ('V');
1007 Write_Info_Str (" """);
1008 Write_Info_Str (Verbose_Library_Version);
1009 Write_Info_Char ('"');
1010
1011 Write_Info_EOL;
1012
1013 -- Output main program line if this is acceptable main program
1014
1015 Output_Main_Program_Line : declare
1016 U : Node_Id := Unit (Units.Table (Main_Unit).Cunit);
1017 S : Node_Id;
1018
1019 procedure M_Parameters;
1020 -- Output parameters for main program line
1021
1022 ------------------
1023 -- M_Parameters --
1024 ------------------
1025
1026 procedure M_Parameters is
1027 begin
1028 if Main_Priority (Main_Unit) /= Default_Main_Priority then
1029 Write_Info_Char (' ');
1030 Write_Info_Nat (Main_Priority (Main_Unit));
1031 end if;
1032
1033 if Opt.Time_Slice_Set then
1034 Write_Info_Str (" T=");
1035 Write_Info_Nat (Opt.Time_Slice_Value);
1036 end if;
1037
1038 if Main_CPU (Main_Unit) /= Default_Main_CPU then
1039 Write_Info_Str (" C=");
1040 Write_Info_Nat (Main_CPU (Main_Unit));
1041 end if;
1042
1043 Write_Info_Str (" W=");
1044 Write_Info_Char
1045 (WC_Encoding_Letters (Wide_Character_Encoding_Method));
1046
1047 Write_Info_EOL;
1048 end M_Parameters;
1049
1050 -- Start of processing for Output_Main_Program_Line
1051
1052 begin
1053 if Nkind (U) = N_Subprogram_Body
1054 or else
1055 (Nkind (U) = N_Package_Body
1056 and then
1057 Nkind (Original_Node (U)) in N_Subprogram_Instantiation)
1058 then
1059 -- If the unit is a subprogram instance, the entity for the
1060 -- subprogram is the alias of the visible entity, which is the
1061 -- related instance of the wrapper package. We retrieve the
1062 -- subprogram declaration of the desired entity.
1063
1064 if Nkind (U) = N_Package_Body then
1065 U := Parent (Parent (
1066 Alias (Related_Instance (Defining_Unit_Name
1067 (Specification (Unit (Library_Unit (Parent (U)))))))));
1068 end if;
1069
1070 S := Specification (U);
1071
1072 -- A generic subprogram is never a main program
1073
1074 if Nkind (U) = N_Subprogram_Body
1075 and then Present (Corresponding_Spec (U))
1076 and then
1077 Ekind_In (Corresponding_Spec (U), E_Generic_Procedure,
1078 E_Generic_Function)
1079 then
1080 null;
1081
1082 elsif No (Parameter_Specifications (S)) then
1083 if Nkind (S) = N_Procedure_Specification then
1084 Write_Info_Initiate ('M');
1085 Write_Info_Str (" P");
1086 M_Parameters;
1087
1088 else
1089 declare
1090 Nam : Node_Id := Defining_Unit_Name (S);
1091
1092 begin
1093 -- If it is a child unit, get its simple name
1094
1095 if Nkind (Nam) = N_Defining_Program_Unit_Name then
1096 Nam := Defining_Identifier (Nam);
1097 end if;
1098
1099 if Is_Integer_Type (Etype (Nam)) then
1100 Write_Info_Initiate ('M');
1101 Write_Info_Str (" F");
1102 M_Parameters;
1103 end if;
1104 end;
1105 end if;
1106 end if;
1107 end if;
1108 end Output_Main_Program_Line;
1109
1110 -- Write command argument ('A') lines
1111
1112 for A in 1 .. Compilation_Switches.Last loop
1113 Write_Info_Initiate ('A');
1114 Write_Info_Char (' ');
1115 Write_Info_Str (Compilation_Switches.Table (A).all);
1116 Write_Info_Terminate;
1117 end loop;
1118
1119 -- Output parameters ('P') line
1120
1121 Write_Info_Initiate ('P');
1122
1123 if Compilation_Errors then
1124 Write_Info_Str (" CE");
1125 end if;
1126
1127 if Opt.Detect_Blocking then
1128 Write_Info_Str (" DB");
1129 end if;
1130
1131 if Tasking_Used
1132 and then not Is_Predefined_File_Name (Unit_File_Name (Main_Unit))
1133 then
1134 if Locking_Policy /= ' ' then
1135 Write_Info_Str (" L");
1136 Write_Info_Char (Locking_Policy);
1137 end if;
1138
1139 if Queuing_Policy /= ' ' then
1140 Write_Info_Str (" Q");
1141 Write_Info_Char (Queuing_Policy);
1142 end if;
1143
1144 if Task_Dispatching_Policy /= ' ' then
1145 Write_Info_Str (" T");
1146 Write_Info_Char (Task_Dispatching_Policy);
1147 Write_Info_Char (' ');
1148 end if;
1149 end if;
1150
1151 if GNATprove_Mode then
1152 Write_Info_Str (" GP");
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 Default_SSO_Config /= ' ' then
1173 Write_Info_Str (" O");
1174 Write_Info_Char (Default_SSO_Config);
1175 end if;
1176
1177 if Sec_Stack_Used then
1178 Write_Info_Str (" SS");
1179 end if;
1180
1181 if Unreserve_All_Interrupts then
1182 Write_Info_Str (" UA");
1183 end if;
1184
1185 if Exception_Mechanism = Back_End_Exceptions then
1186 Write_Info_Str (" ZX");
1187 end if;
1188
1189 Write_Info_EOL;
1190
1191 -- Before outputting the restrictions line, update the setting of
1192 -- the No_Elaboration_Code flag. Violations of this restriction
1193 -- cannot be detected until after the backend has been called since
1194 -- it is the backend that sets this flag. We have to check all units
1195 -- for which we have generated code
1196
1197 for Unit in Units.First .. Last_Unit loop
1198 if Units.Table (Unit).Generate_Code or else Unit = Main_Unit then
1199 if not Has_No_Elaboration_Code (Cunit (Unit)) then
1200 Main_Restrictions.Violated (No_Elaboration_Code) := True;
1201 end if;
1202 end if;
1203 end loop;
1204
1205 -- Positional case (only if debug flag -gnatd.R is set)
1206
1207 if Debug_Flag_Dot_RR then
1208
1209 -- Output first restrictions line
1210
1211 Write_Info_Initiate ('R');
1212 Write_Info_Char (' ');
1213
1214 -- First the information for the boolean restrictions
1215
1216 for R in All_Boolean_Restrictions loop
1217 if Main_Restrictions.Set (R)
1218 and then not Restriction_Warnings (R)
1219 then
1220 Write_Info_Char ('r');
1221 elsif Main_Restrictions.Violated (R) then
1222 Write_Info_Char ('v');
1223 else
1224 Write_Info_Char ('n');
1225 end if;
1226 end loop;
1227
1228 -- And now the information for the parameter restrictions
1229
1230 for RP in All_Parameter_Restrictions loop
1231 if Main_Restrictions.Set (RP)
1232 and then not Restriction_Warnings (RP)
1233 then
1234 Write_Info_Char ('r');
1235 Write_Info_Nat (Nat (Main_Restrictions.Value (RP)));
1236 else
1237 Write_Info_Char ('n');
1238 end if;
1239
1240 if not Main_Restrictions.Violated (RP)
1241 or else RP not in Checked_Parameter_Restrictions
1242 then
1243 Write_Info_Char ('n');
1244 else
1245 Write_Info_Char ('v');
1246 Write_Info_Nat (Nat (Main_Restrictions.Count (RP)));
1247
1248 if Main_Restrictions.Unknown (RP) then
1249 Write_Info_Char ('+');
1250 end if;
1251 end if;
1252 end loop;
1253
1254 Write_Info_EOL;
1255
1256 -- Named case (if debug flag -gnatd.R is not set)
1257
1258 else
1259 declare
1260 C : Character;
1261
1262 begin
1263 -- Write RN header line with preceding blank line
1264
1265 Write_Info_EOL;
1266 Write_Info_Initiate ('R');
1267 Write_Info_Char ('N');
1268 Write_Info_EOL;
1269
1270 -- First the lines for the boolean restrictions
1271
1272 for R in All_Boolean_Restrictions loop
1273 if Main_Restrictions.Set (R)
1274 and then not Restriction_Warnings (R)
1275 then
1276 C := 'R';
1277 elsif Main_Restrictions.Violated (R) then
1278 C := 'V';
1279 else
1280 goto Continue;
1281 end if;
1282
1283 Write_Info_Initiate ('R');
1284 Write_Info_Char (C);
1285 Write_Info_Char (' ');
1286 Write_Info_Str (All_Boolean_Restrictions'Image (R));
1287 Write_Info_EOL;
1288
1289 <<Continue>>
1290 null;
1291 end loop;
1292 end;
1293
1294 -- And now the lines for the parameter restrictions
1295
1296 for RP in All_Parameter_Restrictions loop
1297 if Main_Restrictions.Set (RP)
1298 and then not Restriction_Warnings (RP)
1299 then
1300 Write_Info_Initiate ('R');
1301 Write_Info_Str ("R ");
1302 Write_Info_Str (All_Parameter_Restrictions'Image (RP));
1303 Write_Info_Char ('=');
1304 Write_Info_Nat (Nat (Main_Restrictions.Value (RP)));
1305 Write_Info_EOL;
1306 end if;
1307
1308 if not Main_Restrictions.Violated (RP)
1309 or else RP not in Checked_Parameter_Restrictions
1310 then
1311 null;
1312 else
1313 Write_Info_Initiate ('R');
1314 Write_Info_Str ("V ");
1315 Write_Info_Str (All_Parameter_Restrictions'Image (RP));
1316 Write_Info_Char ('=');
1317 Write_Info_Nat (Nat (Main_Restrictions.Count (RP)));
1318
1319 if Main_Restrictions.Unknown (RP) then
1320 Write_Info_Char ('+');
1321 end if;
1322
1323 Write_Info_EOL;
1324 end if;
1325 end loop;
1326 end if;
1327
1328 -- Output R lines for No_Dependence entries
1329
1330 for J in No_Dependences.First .. No_Dependences.Last loop
1331 if In_Extended_Main_Source_Unit (No_Dependences.Table (J).Unit)
1332 and then not No_Dependences.Table (J).Warn
1333 then
1334 Write_Info_Initiate ('R');
1335 Write_Info_Char (' ');
1336 Write_Unit_Name (No_Dependences.Table (J).Unit);
1337 Write_Info_EOL;
1338 end if;
1339 end loop;
1340
1341 -- Output interrupt state lines
1342
1343 for J in Interrupt_States.First .. Interrupt_States.Last loop
1344 Write_Info_Initiate ('I');
1345 Write_Info_Char (' ');
1346 Write_Info_Nat (Interrupt_States.Table (J).Interrupt_Number);
1347 Write_Info_Char (' ');
1348 Write_Info_Char (Interrupt_States.Table (J).Interrupt_State);
1349 Write_Info_Char (' ');
1350 Write_Info_Nat
1351 (Nat (Get_Logical_Line_Number
1352 (Interrupt_States.Table (J).Pragma_Loc)));
1353 Write_Info_EOL;
1354 end loop;
1355
1356 -- Output priority specific dispatching lines
1357
1358 for J in Specific_Dispatching.First .. Specific_Dispatching.Last loop
1359 Write_Info_Initiate ('S');
1360 Write_Info_Char (' ');
1361 Write_Info_Char (Specific_Dispatching.Table (J).Dispatching_Policy);
1362 Write_Info_Char (' ');
1363 Write_Info_Nat (Specific_Dispatching.Table (J).First_Priority);
1364 Write_Info_Char (' ');
1365 Write_Info_Nat (Specific_Dispatching.Table (J).Last_Priority);
1366 Write_Info_Char (' ');
1367 Write_Info_Nat
1368 (Nat (Get_Logical_Line_Number
1369 (Specific_Dispatching.Table (J).Pragma_Loc)));
1370 Write_Info_EOL;
1371 end loop;
1372
1373 -- Loop through file table to output information for all units for which
1374 -- we have generated code, as marked by the Generate_Code flag.
1375
1376 for Unit in Units.First .. Last_Unit loop
1377 if Units.Table (Unit).Generate_Code
1378 or else Unit = Main_Unit
1379 then
1380 Write_Info_EOL; -- blank line
1381 Write_Unit_Information (Unit);
1382 end if;
1383 end loop;
1384
1385 Write_Info_EOL; -- blank line
1386
1387 -- Output external version reference lines
1388
1389 for J in 1 .. Version_Ref.Last loop
1390 Write_Info_Initiate ('E');
1391 Write_Info_Char (' ');
1392
1393 for K in 1 .. String_Length (Version_Ref.Table (J)) loop
1394 Write_Info_Char_Code (Get_String_Char (Version_Ref.Table (J), K));
1395 end loop;
1396
1397 Write_Info_EOL;
1398 end loop;
1399
1400 -- Prepare to output the source dependency lines
1401
1402 declare
1403 Unum : Unit_Number_Type;
1404 -- Number of unit being output
1405
1406 Sind : Source_File_Index;
1407 -- Index of corresponding source file
1408
1409 Fname : File_Name_Type;
1410
1411 begin
1412 for J in 1 .. Num_Sdep loop
1413 Unum := Sdep_Table (J);
1414 Units.Table (Unum).Dependency_Num := J;
1415 Sind := Units.Table (Unum).Source_Index;
1416
1417 Write_Info_Initiate ('D');
1418 Write_Info_Char (' ');
1419
1420 -- Normal case of a unit entry with a source index
1421
1422 if Sind /= No_Source_File then
1423 Fname := File_Name (Sind);
1424
1425 -- Ensure that on platforms where the file names are not case
1426 -- sensitive, the recorded file name is in lower case.
1427
1428 if not File_Names_Case_Sensitive then
1429 Get_Name_String (Fname);
1430 To_Lower (Name_Buffer (1 .. Name_Len));
1431 Fname := Name_Find;
1432 end if;
1433
1434 Write_Info_Name_May_Be_Quoted (Fname);
1435 Write_Info_Tab (25);
1436 Write_Info_Str (String (Time_Stamp (Sind)));
1437 Write_Info_Char (' ');
1438 Write_Info_Str (Get_Hex_String (Source_Checksum (Sind)));
1439
1440 -- If subunit, add unit name, omitting the %b at the end
1441
1442 if Present (Cunit (Unum)) then
1443 Get_Decoded_Name_String (Unit_Name (Unum));
1444 Write_Info_Char (' ');
1445
1446 if Nkind (Unit (Cunit (Unum))) = N_Subunit then
1447 Write_Info_Str (Name_Buffer (1 .. Name_Len - 2));
1448 else
1449 Write_Info_Str (Name_Buffer (1 .. Name_Len));
1450 end if;
1451 end if;
1452
1453 -- If Source_Reference pragma used, output information
1454
1455 if Num_SRef_Pragmas (Sind) > 0 then
1456 Write_Info_Char (' ');
1457
1458 if Num_SRef_Pragmas (Sind) = 1 then
1459 Write_Info_Nat (Int (First_Mapped_Line (Sind)));
1460 else
1461 Write_Info_Nat (0);
1462 end if;
1463
1464 Write_Info_Char (':');
1465 Write_Info_Name (Reference_Name (Sind));
1466 end if;
1467
1468 -- Case where there is no source index (happens for missing
1469 -- files). In this case we write a dummy time stamp.
1470
1471 else
1472 Write_Info_Name (Unit_File_Name (Unum));
1473 Write_Info_Tab (25);
1474 Write_Info_Str (String (Dummy_Time_Stamp));
1475 Write_Info_Char (' ');
1476 Write_Info_Str (Get_Hex_String (0));
1477 end if;
1478
1479 Write_Info_EOL;
1480 end loop;
1481 end;
1482
1483 -- Output cross-references
1484
1485 if Opt.Xref_Active then
1486 Output_References;
1487 end if;
1488
1489 -- Output SCO information if present
1490
1491 if Generate_SCO then
1492 SCO_Record_Filtered;
1493 SCO_Output;
1494 end if;
1495
1496 -- Output SPARK cross-reference information if needed
1497
1498 if Opt.Xref_Active and then GNATprove_Mode then
1499 SPARK_Specific.Collect_SPARK_Xrefs (Sdep_Table => Sdep_Table,
1500 Num_Sdep => Num_Sdep);
1501 SPARK_Specific.Output_SPARK_Xrefs;
1502 end if;
1503
1504 -- Output final blank line and we are done. This final blank line is
1505 -- probably junk, but we don't feel like making an incompatible change.
1506
1507 Write_Info_Terminate;
1508 Close_Output_Library_Info;
1509 end Write_ALI;
1510
1511 ---------------------
1512 -- Write_Unit_Name --
1513 ---------------------
1514
1515 procedure Write_Unit_Name (N : Node_Id) is
1516 begin
1517 if Nkind (N) = N_Identifier then
1518 Write_Info_Name (Chars (N));
1519
1520 else
1521 pragma Assert (Nkind (N) = N_Selected_Component);
1522 Write_Unit_Name (Prefix (N));
1523 Write_Info_Char ('.');
1524 Write_Unit_Name (Selector_Name (N));
1525 end if;
1526 end Write_Unit_Name;
1527
1528 end Lib.Writ;
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