1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
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. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
27 with ALI.Util; use ALI.Util;
28 with Binderr; use Binderr;
29 with Butil; use Butil;
30 with Casing; use Casing;
31 with Fname; use Fname;
32 with Namet; use Namet;
35 with Output; use Output;
36 with Rident; use Rident;
37 with Types; use Types;
39 package body Bcheck is
41 -----------------------
42 -- Local Subprograms --
43 -----------------------
45 -- The following checking subprograms make up the parts of the
46 -- configuration consistency check. See bodies for details of checks.
48 procedure Check_Consistent_Dispatching_Policy;
49 procedure Check_Consistent_Dynamic_Elaboration_Checking;
50 procedure Check_Consistent_Floating_Point_Format;
51 procedure Check_Consistent_Interrupt_States;
52 procedure Check_Consistent_Locking_Policy;
53 procedure Check_Consistent_Normalize_Scalars;
54 procedure Check_Consistent_Optimize_Alignment;
55 procedure Check_Consistent_Queuing_Policy;
56 procedure Check_Consistent_Restrictions;
57 procedure Check_Consistent_Restriction_No_Default_Initialization;
58 procedure Check_Consistent_Zero_Cost_Exception_Handling;
60 procedure Consistency_Error_Msg (Msg : String);
61 -- Produce an error or a warning message, depending on whether an
62 -- inconsistent configuration is permitted or not.
64 function Same_Unit (U1 : Unit_Name_Type; U2 : Name_Id) return Boolean;
65 -- Used to compare two unit names for No_Dependence checks. U1 is in
66 -- standard unit name format, and U2 is in literal form with periods.
68 -------------------------------------
69 -- Check_Configuration_Consistency --
70 -------------------------------------
72 procedure Check_Configuration_Consistency is
74 if Float_Format_Specified /= ' ' then
75 Check_Consistent_Floating_Point_Format;
78 if Queuing_Policy_Specified /= ' ' then
79 Check_Consistent_Queuing_Policy;
82 if Locking_Policy_Specified /= ' ' then
83 Check_Consistent_Locking_Policy;
86 if Zero_Cost_Exceptions_Specified then
87 Check_Consistent_Zero_Cost_Exception_Handling;
90 Check_Consistent_Normalize_Scalars;
91 Check_Consistent_Optimize_Alignment;
92 Check_Consistent_Dynamic_Elaboration_Checking;
93 Check_Consistent_Restrictions;
94 Check_Consistent_Restriction_No_Default_Initialization;
95 Check_Consistent_Interrupt_States;
96 Check_Consistent_Dispatching_Policy;
97 end Check_Configuration_Consistency;
99 -----------------------
100 -- Check_Consistency --
101 -----------------------
103 procedure Check_Consistency is
105 -- Source file Id for this Sdep entry
107 ALI_Path_Id : File_Name_Type;
110 -- First, we go through the source table to see if there are any cases
111 -- in which we should go after source files and compute checksums of
112 -- the source files. We need to do this for any file for which we have
113 -- mismatching time stamps and (so far) matching checksums.
115 for S in Source.First .. Source.Last loop
117 -- If all time stamps for a file match, then there is nothing to
118 -- do, since we will not be checking checksums in that case anyway
120 if Source.Table (S).All_Timestamps_Match then
123 -- If we did not find the source file, then we can't compute its
124 -- checksum anyway. Note that when we have a time stamp mismatch,
125 -- we try to find the source file unconditionally (i.e. if
126 -- Check_Source_Files is False).
128 elsif not Source.Table (S).Source_Found then
131 -- If we already have non-matching or missing checksums, then no
132 -- need to try going after source file, since we won't trust the
133 -- checksums in any case.
135 elsif not Source.Table (S).All_Checksums_Match then
138 -- Now we have the case where we have time stamp mismatches, and
139 -- the source file is around, but so far all checksums match. This
140 -- is the case where we need to compute the checksum from the source
141 -- file, since otherwise we would ignore the time stamp mismatches,
142 -- and that is wrong if the checksum of the source does not agree
143 -- with the checksums in the ALI files.
145 elsif Check_Source_Files then
146 if not Checksums_Match
147 (Source.Table (S).Checksum,
148 Get_File_Checksum (Source.Table (S).Sfile))
150 Source.Table (S).All_Checksums_Match := False;
155 -- Loop through ALI files
157 ALIs_Loop : for A in ALIs.First .. ALIs.Last loop
159 -- Loop through Sdep entries in one ALI file
162 ALIs.Table (A).First_Sdep .. ALIs.Table (A).Last_Sdep
164 if Sdep.Table (D).Dummy_Entry then
168 Src := Source_Id (Get_Name_Table_Info (Sdep.Table (D).Sfile));
170 -- If the time stamps match, or all checksums match, then we
171 -- are OK, otherwise we have a definite error.
173 if Sdep.Table (D).Stamp /= Source.Table (Src).Stamp
174 and then not Source.Table (Src).All_Checksums_Match
176 Error_Msg_File_1 := ALIs.Table (A).Sfile;
177 Error_Msg_File_2 := Sdep.Table (D).Sfile;
179 -- Two styles of message, depending on whether or not
180 -- the updated file is the one that must be recompiled
182 if Error_Msg_File_1 = Error_Msg_File_2 then
183 if Tolerate_Consistency_Errors then
185 ("?{ has been modified and should be recompiled");
188 ("{ has been modified and must be recompiled");
193 Osint.Find_File ((ALIs.Table (A).Afile), Osint.Library);
194 if Osint.Is_Readonly_Library (ALI_Path_Id) then
195 if Tolerate_Consistency_Errors then
196 Error_Msg ("?{ should be recompiled");
197 Error_Msg_File_1 := ALI_Path_Id;
198 Error_Msg ("?({ is obsolete and read-only)");
200 Error_Msg ("{ must be compiled");
201 Error_Msg_File_1 := ALI_Path_Id;
202 Error_Msg ("({ is obsolete and read-only)");
205 elsif Tolerate_Consistency_Errors then
207 ("?{ should be recompiled ({ has been modified)");
210 Error_Msg ("{ must be recompiled ({ has been modified)");
214 if (not Tolerate_Consistency_Errors) and Verbose_Mode then
215 Error_Msg_File_1 := Sdep.Table (D).Sfile;
217 ("{ time stamp " & String (Source.Table (Src).Stamp));
219 Error_Msg_File_1 := Sdep.Table (D).Sfile;
220 -- Something wrong here, should be different file ???
223 (" conflicts with { timestamp " &
224 String (Sdep.Table (D).Stamp));
227 -- Exit from the loop through Sdep entries once we find one
228 -- that does not match.
237 end Check_Consistency;
239 -----------------------------------------
240 -- Check_Consistent_Dispatching_Policy --
241 -----------------------------------------
243 -- The rule is that all files for which the dispatching policy is
244 -- significant must meet the following rules:
246 -- 1. All files for which a task dispatching policy is significant must
247 -- be compiled with the same setting.
249 -- 2. If a partition contains one or more Priority_Specific_Dispatching
250 -- pragmas it cannot contain a Task_Dispatching_Policy pragma.
252 -- 3. No overlap is allowed in the priority ranges specified in
253 -- Priority_Specific_Dispatching pragmas within the same partition.
255 -- 4. If a partition contains one or more Priority_Specific_Dispatching
256 -- pragmas then the Ceiling_Locking policy is the only one allowed for
259 procedure Check_Consistent_Dispatching_Policy is
261 -- Maximum priority value for which a Priority_Specific_Dispatching
262 -- pragma has been specified.
264 TDP_Pragma_Afile : ALI_Id := No_ALI_Id;
265 -- ALI file where a Task_Dispatching_Policy pragma appears
268 -- Consistency checks in units specifying a Task_Dispatching_Policy
270 if Task_Dispatching_Policy_Specified /= ' ' then
271 Find_Policy : for A1 in ALIs.First .. ALIs.Last loop
272 if ALIs.Table (A1).Task_Dispatching_Policy /= ' ' then
274 -- Store the place where the first task dispatching pragma
275 -- appears. We may need this value for issuing consistency
276 -- errors if Priority_Specific_Dispatching pragmas are used.
278 TDP_Pragma_Afile := A1;
280 Check_Policy : declare
281 Policy : constant Character :=
282 ALIs.Table (A1).Task_Dispatching_Policy;
285 for A2 in A1 + 1 .. ALIs.Last loop
286 if ALIs.Table (A2).Task_Dispatching_Policy /= ' '
288 ALIs.Table (A2).Task_Dispatching_Policy /= Policy
290 Error_Msg_File_1 := ALIs.Table (A1).Sfile;
291 Error_Msg_File_2 := ALIs.Table (A2).Sfile;
293 Consistency_Error_Msg
294 ("{ and { compiled with different task" &
295 " dispatching policies");
303 end loop Find_Policy;
306 -- If no Priority_Specific_Dispatching entries, nothing else to do
308 if Specific_Dispatching.Last >= Specific_Dispatching.First then
310 -- Find out the maximum priority value for which one of the
311 -- Priority_Specific_Dispatching pragmas applies.
314 for J in Specific_Dispatching.First .. Specific_Dispatching.Last loop
315 if Specific_Dispatching.Table (J).Last_Priority > Max_Prio then
316 Max_Prio := Specific_Dispatching.Table (J).Last_Priority;
320 -- Now establish tables to be used for consistency checking
323 -- The following record type is used to record locations of the
324 -- Priority_Specific_Dispatching pragmas applying to the Priority.
326 type Specific_Dispatching_Entry is record
327 Dispatching_Policy : Character := ' ';
328 -- First character (upper case) of corresponding policy name
330 Afile : ALI_Id := No_ALI_Id;
331 -- ALI file that generated Priority Specific Dispatching
332 -- entry for consistency message.
335 -- Line numbers from Priority_Specific_Dispatching pragma
338 PSD_Table : array (0 .. Max_Prio) of Specific_Dispatching_Entry :=
339 (others => Specific_Dispatching_Entry'
340 (Dispatching_Policy => ' ',
343 -- Array containing an entry per priority containing the location
344 -- where there is a Priority_Specific_Dispatching pragma that
345 -- applies to the priority.
348 for F in ALIs.First .. ALIs.Last loop
349 for K in ALIs.Table (F).First_Specific_Dispatching ..
350 ALIs.Table (F).Last_Specific_Dispatching
353 DTK : Specific_Dispatching_Record
354 renames Specific_Dispatching.Table (K);
356 -- Check whether pragma Task_Dispatching_Policy and
357 -- pragma Priority_Specific_Dispatching are used in the
360 if Task_Dispatching_Policy_Specified /= ' ' then
361 Error_Msg_File_1 := ALIs.Table (F).Sfile;
363 ALIs.Table (TDP_Pragma_Afile).Sfile;
365 Error_Msg_Nat_1 := DTK.PSD_Pragma_Line;
367 Consistency_Error_Msg
368 ("Priority_Specific_Dispatching at {:#" &
369 " incompatible with Task_Dispatching_Policy at {");
372 -- Ceiling_Locking must also be specified for a partition
373 -- with at least one Priority_Specific_Dispatching
376 if Locking_Policy_Specified /= ' '
377 and then Locking_Policy_Specified /= 'C'
379 for A in ALIs.First .. ALIs.Last loop
380 if ALIs.Table (A).Locking_Policy /= ' '
381 and then ALIs.Table (A).Locking_Policy /= 'C'
383 Error_Msg_File_1 := ALIs.Table (F).Sfile;
384 Error_Msg_File_2 := ALIs.Table (A).Sfile;
386 Error_Msg_Nat_1 := DTK.PSD_Pragma_Line;
388 Consistency_Error_Msg
389 ("Priority_Specific_Dispatching at {:#" &
390 " incompatible with Locking_Policy at {");
395 -- Check overlapping priority ranges
397 Find_Overlapping : for Prio in
398 DTK.First_Priority .. DTK.Last_Priority
400 if PSD_Table (Prio).Afile = No_ALI_Id then
402 (Dispatching_Policy => DTK.Dispatching_Policy,
403 Afile => F, Loc => DTK.PSD_Pragma_Line);
405 elsif PSD_Table (Prio).Dispatching_Policy /=
406 DTK.Dispatching_Policy
410 ALIs.Table (PSD_Table (Prio).Afile).Sfile;
411 Error_Msg_File_2 := ALIs.Table (F).Sfile;
412 Error_Msg_Nat_1 := PSD_Table (Prio).Loc;
413 Error_Msg_Nat_2 := DTK.PSD_Pragma_Line;
415 Consistency_Error_Msg
416 ("overlapping priority ranges at {:# and {:#");
418 exit Find_Overlapping;
420 end loop Find_Overlapping;
426 end Check_Consistent_Dispatching_Policy;
428 ---------------------------------------------------
429 -- Check_Consistent_Dynamic_Elaboration_Checking --
430 ---------------------------------------------------
432 -- The rule here is that if a unit has dynamic elaboration checks,
433 -- then any unit it withs must meeting one of the following criteria:
435 -- 1. There is a pragma Elaborate_All for the with'ed unit
436 -- 2. The with'ed unit was compiled with dynamic elaboration checks
437 -- 3. The with'ed unit has pragma Preelaborate or Pure
438 -- 4. It is an internal GNAT unit (including children of GNAT)
440 procedure Check_Consistent_Dynamic_Elaboration_Checking is
442 if Dynamic_Elaboration_Checks_Specified then
443 for U in First_Unit_Entry .. Units.Last loop
445 UR : Unit_Record renames Units.Table (U);
448 if UR.Dynamic_Elab then
449 for W in UR.First_With .. UR.Last_With loop
451 WR : With_Record renames Withs.Table (W);
454 if Get_Name_Table_Info (WR.Uname) /= 0 then
456 WU : Unit_Record renames
459 (Get_Name_Table_Info (WR.Uname)));
462 -- Case 1. Elaborate_All for with'ed unit
464 if WR.Elaborate_All then
467 -- Case 2. With'ed unit has dynamic elab checks
469 elsif WU.Dynamic_Elab then
472 -- Case 3. With'ed unit is Preelaborate or Pure
474 elsif WU.Preelab or else WU.Pure then
477 -- Case 4. With'ed unit is internal file
479 elsif Is_Internal_File_Name (WU.Sfile) then
482 -- Issue warning, not one of the safe cases
485 Error_Msg_File_1 := UR.Sfile;
487 ("?{ has dynamic elaboration checks " &
490 Error_Msg_File_1 := WU.Sfile;
492 ("? { which has static elaboration " &
495 Warnings_Detected := Warnings_Detected - 1;
505 end Check_Consistent_Dynamic_Elaboration_Checking;
507 --------------------------------------------
508 -- Check_Consistent_Floating_Point_Format --
509 --------------------------------------------
511 -- The rule is that all files must be compiled with the same setting
512 -- for the floating-point format.
514 procedure Check_Consistent_Floating_Point_Format is
516 -- First search for a unit specifying a floating-point format and then
517 -- check all remaining units against it.
519 Find_Format : for A1 in ALIs.First .. ALIs.Last loop
520 if ALIs.Table (A1).Float_Format /= ' ' then
521 Check_Format : declare
522 Format : constant Character := ALIs.Table (A1).Float_Format;
524 for A2 in A1 + 1 .. ALIs.Last loop
525 if ALIs.Table (A2).Float_Format /= Format then
526 Error_Msg_File_1 := ALIs.Table (A1).Sfile;
527 Error_Msg_File_2 := ALIs.Table (A2).Sfile;
529 Consistency_Error_Msg
530 ("{ and { compiled with different " &
531 "floating-point representations");
539 end loop Find_Format;
540 end Check_Consistent_Floating_Point_Format;
542 ---------------------------------------
543 -- Check_Consistent_Interrupt_States --
544 ---------------------------------------
546 -- The rule is that if the state of a given interrupt is specified
547 -- in more than one unit, it must be specified with a consistent state.
549 procedure Check_Consistent_Interrupt_States is
553 -- If no Interrupt_State entries, nothing to do
555 if Interrupt_States.Last < Interrupt_States.First then
559 -- First find out the maximum interrupt value
562 for J in Interrupt_States.First .. Interrupt_States.Last loop
563 if Interrupt_States.Table (J).Interrupt_Id > Max_Intrup then
564 Max_Intrup := Interrupt_States.Table (J).Interrupt_Id;
568 -- Now establish tables to be used for consistency checking
571 Istate : array (0 .. Max_Intrup) of Character := (others => 'n');
572 -- Interrupt state entries, 'u'/'s'/'r' or 'n' to indicate an
573 -- entry that has not been set.
575 Afile : array (0 .. Max_Intrup) of ALI_Id;
576 -- ALI file that generated Istate entry for consistency message
578 Loc : array (0 .. Max_Intrup) of Nat;
579 -- Line numbers from IS pragma generating Istate entry
582 -- Interrupt number from entry being tested
585 -- Interrupt state from entry being tested
588 -- Line number from entry being tested
591 for F in ALIs.First .. ALIs.Last loop
592 for K in ALIs.Table (F).First_Interrupt_State ..
593 ALIs.Table (F).Last_Interrupt_State
595 Inum := Interrupt_States.Table (K).Interrupt_Id;
596 Stat := Interrupt_States.Table (K).Interrupt_State;
597 Lnum := Interrupt_States.Table (K).IS_Pragma_Line;
599 if Istate (Inum) = 'n' then
600 Istate (Inum) := Stat;
604 elsif Istate (Inum) /= Stat then
605 Error_Msg_File_1 := ALIs.Table (Afile (Inum)).Sfile;
606 Error_Msg_File_2 := ALIs.Table (F).Sfile;
607 Error_Msg_Nat_1 := Loc (Inum);
608 Error_Msg_Nat_2 := Lnum;
610 Consistency_Error_Msg
611 ("inconsistent interrupt states at {:# and {:#");
616 end Check_Consistent_Interrupt_States;
618 -------------------------------------
619 -- Check_Consistent_Locking_Policy --
620 -------------------------------------
622 -- The rule is that all files for which the locking policy is
623 -- significant must be compiled with the same setting.
625 procedure Check_Consistent_Locking_Policy is
627 -- First search for a unit specifying a policy and then
628 -- check all remaining units against it.
630 Find_Policy : for A1 in ALIs.First .. ALIs.Last loop
631 if ALIs.Table (A1).Locking_Policy /= ' ' then
632 Check_Policy : declare
633 Policy : constant Character := ALIs.Table (A1).Locking_Policy;
636 for A2 in A1 + 1 .. ALIs.Last loop
637 if ALIs.Table (A2).Locking_Policy /= ' '
639 ALIs.Table (A2).Locking_Policy /= Policy
641 Error_Msg_File_1 := ALIs.Table (A1).Sfile;
642 Error_Msg_File_2 := ALIs.Table (A2).Sfile;
644 Consistency_Error_Msg
645 ("{ and { compiled with different locking policies");
653 end loop Find_Policy;
654 end Check_Consistent_Locking_Policy;
656 ----------------------------------------
657 -- Check_Consistent_Normalize_Scalars --
658 ----------------------------------------
660 -- The rule is that if any unit is compiled with Normalized_Scalars,
661 -- then all other units in the partition must also be compiled with
662 -- Normalized_Scalars in effect.
664 -- There is some issue as to whether this consistency check is desirable,
665 -- it is certainly required at the moment by the RM. We should keep a watch
666 -- on the ARG and HRG deliberations here. GNAT no longer depends on this
667 -- consistency (it used to do so, but that is no longer the case, since
668 -- pragma Initialize_Scalars pragma does not require consistency.)
670 procedure Check_Consistent_Normalize_Scalars is
672 if Normalize_Scalars_Specified and No_Normalize_Scalars_Specified then
673 Consistency_Error_Msg
674 ("some but not all files compiled with Normalize_Scalars");
677 Write_Str ("files compiled with Normalize_Scalars");
680 for A1 in ALIs.First .. ALIs.Last loop
681 if ALIs.Table (A1).Normalize_Scalars then
683 Write_Name (ALIs.Table (A1).Sfile);
689 Write_Str ("files compiled without Normalize_Scalars");
692 for A1 in ALIs.First .. ALIs.Last loop
693 if not ALIs.Table (A1).Normalize_Scalars then
695 Write_Name (ALIs.Table (A1).Sfile);
700 end Check_Consistent_Normalize_Scalars;
702 -----------------------------------------
703 -- Check_Consistent_Optimize_Alignment --
704 -----------------------------------------
706 -- The rule is that all units which depend on the global default setting
707 -- of Optimize_Alignment must be compiled with the same setting for this
708 -- default. Units which specify an explicit local value for this setting
709 -- are exempt from the consistency rule (this includes all internal units).
711 procedure Check_Consistent_Optimize_Alignment is
712 OA_Setting : Character := ' ';
713 -- Reset when we find a unit that depends on the default and does
714 -- not have a local specification of the Optimize_Alignment setting.
717 -- Id of unit from which OA_Setting was set
722 for U in First_Unit_Entry .. Units.Last loop
723 C := Units.Table (U).Optimize_Alignment;
726 if OA_Setting = ' ' then
730 elsif OA_Setting = C then
734 Error_Msg_Unit_1 := Units.Table (OA_Unit).Uname;
735 Error_Msg_Unit_2 := Units.Table (U).Uname;
737 Consistency_Error_Msg
738 ("$ and $ compiled with different "
739 & "default Optimize_Alignment settings");
744 end Check_Consistent_Optimize_Alignment;
746 -------------------------------------
747 -- Check_Consistent_Queuing_Policy --
748 -------------------------------------
750 -- The rule is that all files for which the queuing policy is
751 -- significant must be compiled with the same setting.
753 procedure Check_Consistent_Queuing_Policy is
755 -- First search for a unit specifying a policy and then
756 -- check all remaining units against it.
758 Find_Policy : for A1 in ALIs.First .. ALIs.Last loop
759 if ALIs.Table (A1).Queuing_Policy /= ' ' then
760 Check_Policy : declare
761 Policy : constant Character := ALIs.Table (A1).Queuing_Policy;
763 for A2 in A1 + 1 .. ALIs.Last loop
764 if ALIs.Table (A2).Queuing_Policy /= ' '
766 ALIs.Table (A2).Queuing_Policy /= Policy
768 Error_Msg_File_1 := ALIs.Table (A1).Sfile;
769 Error_Msg_File_2 := ALIs.Table (A2).Sfile;
771 Consistency_Error_Msg
772 ("{ and { compiled with different queuing policies");
780 end loop Find_Policy;
781 end Check_Consistent_Queuing_Policy;
783 -----------------------------------
784 -- Check_Consistent_Restrictions --
785 -----------------------------------
787 -- The rule is that if a restriction is specified in any unit, then all
788 -- units must obey the restriction. The check applies only to restrictions
789 -- which require partition wide consistency, and not to internal units.
791 procedure Check_Consistent_Restrictions is
792 Restriction_File_Output : Boolean;
793 -- Shows if we have output header messages for restriction violation
795 procedure Print_Restriction_File (R : All_Restrictions);
796 -- Print header line for R if not printed yet
798 ----------------------------
799 -- Print_Restriction_File --
800 ----------------------------
802 procedure Print_Restriction_File (R : All_Restrictions) is
804 if not Restriction_File_Output then
805 Restriction_File_Output := True;
807 -- Find an ali file specifying the restriction
809 for A in ALIs.First .. ALIs.Last loop
810 if ALIs.Table (A).Restrictions.Set (R)
811 and then (R in All_Boolean_Restrictions
812 or else ALIs.Table (A).Restrictions.Value (R) =
813 Cumulative_Restrictions.Value (R))
815 -- We have found that ALI file A specifies the restriction
816 -- that is being violated (the minimum value is specified
817 -- in the case of a parameter restriction).
820 M1 : constant String := "{ has restriction ";
821 S : constant String := Restriction_Id'Image (R);
822 M2 : String (1 .. 2000); -- big enough!
826 Name_Buffer (1 .. S'Length) := S;
827 Name_Len := S'Length;
828 Set_Casing (Mixed_Case);
832 M2 (P .. P + S'Length - 1) := Name_Buffer (1 .. S'Length);
835 if R in All_Parameter_Restrictions then
836 M2 (P .. P + 4) := " => #";
838 Int (Cumulative_Restrictions.Value (R));
842 Error_Msg_File_1 := ALIs.Table (A).Sfile;
843 Consistency_Error_Msg (M2 (1 .. P - 1));
844 Consistency_Error_Msg
845 ("but the following files violate this restriction:");
851 end Print_Restriction_File;
853 -- Start of processing for Check_Consistent_Restrictions
856 -- Loop through all restriction violations
858 for R in All_Restrictions loop
860 -- Check for violation of this restriction
862 if Cumulative_Restrictions.Set (R)
863 and then Cumulative_Restrictions.Violated (R)
864 and then (R in Partition_Boolean_Restrictions
865 or else (R in All_Parameter_Restrictions
867 Cumulative_Restrictions.Count (R) >
868 Cumulative_Restrictions.Value (R)))
870 Restriction_File_Output := False;
872 -- Loop through files looking for violators
874 for A2 in ALIs.First .. ALIs.Last loop
876 T : ALIs_Record renames ALIs.Table (A2);
879 if T.Restrictions.Violated (R) then
881 -- We exclude predefined files from the list of
882 -- violators. This should be rethought. It is not
883 -- clear that this is the right thing to do, that
884 -- is particularly the case for restricted runtimes.
886 if not Is_Internal_File_Name (T.Sfile) then
888 -- Case of Boolean restriction, just print file name
890 if R in All_Boolean_Restrictions then
891 Print_Restriction_File (R);
892 Error_Msg_File_1 := T.Sfile;
893 Consistency_Error_Msg (" {");
895 -- Case of Parameter restriction where violation
896 -- count exceeds restriction value, print file
897 -- name and count, adding "at least" if the
898 -- exact count is not known.
900 elsif R in Checked_Add_Parameter_Restrictions
901 or else T.Restrictions.Count (R) >
902 Cumulative_Restrictions.Value (R)
904 Print_Restriction_File (R);
905 Error_Msg_File_1 := T.Sfile;
906 Error_Msg_Nat_1 := Int (T.Restrictions.Count (R));
908 if T.Restrictions.Unknown (R) then
909 Consistency_Error_Msg
910 (" { (count = at least #)");
912 Consistency_Error_Msg
923 -- Now deal with No_Dependence indications. Note that we put the loop
924 -- through entries in the no dependency table first, since this loop
925 -- is most often empty (no such pragma Restrictions in use).
927 for ND in No_Deps.First .. No_Deps.Last loop
929 ND_Unit : constant Name_Id :=
930 No_Deps.Table (ND).No_Dep_Unit;
933 for J in ALIs.First .. ALIs.Last loop
935 A : ALIs_Record renames ALIs.Table (J);
938 for K in A.First_Unit .. A.Last_Unit loop
940 U : Unit_Record renames Units.Table (K);
942 for L in U.First_With .. U.Last_With loop
944 (Withs.Table (L).Uname, ND_Unit)
946 Error_Msg_File_1 := U.Sfile;
947 Error_Msg_Name_1 := ND_Unit;
948 Consistency_Error_Msg
949 ("file { violates restriction " &
950 "No_Dependence => %");
959 end Check_Consistent_Restrictions;
961 ------------------------------------------------------------
962 -- Check_Consistent_Restriction_No_Default_Initialization --
963 ------------------------------------------------------------
965 -- The Restriction (No_Default_Initialization) has special consistency
966 -- rules. The rule is that no unit compiled without this restriction
967 -- that violates the restriction can WITH a unit that is compiled with
970 procedure Check_Consistent_Restriction_No_Default_Initialization is
972 -- Nothing to do if no one set this restriction
974 if not Cumulative_Restrictions.Set (No_Default_Initialization) then
978 -- Nothing to do if no one violates the restriction
980 if not Cumulative_Restrictions.Violated (No_Default_Initialization) then
984 -- Otherwise we go into a full scan to find possible problems
986 for U in Units.First .. Units.Last loop
988 UTE : Unit_Record renames Units.Table (U);
989 ATE : ALIs_Record renames ALIs.Table (UTE.My_ALI);
992 if ATE.Restrictions.Violated (No_Default_Initialization) then
993 for W in UTE.First_With .. UTE.Last_With loop
995 AFN : constant File_Name_Type := Withs.Table (W).Afile;
998 -- The file name may not be present for withs of certain
999 -- generic run-time files. The test can be safely left
1000 -- out in such cases anyway.
1002 if AFN /= No_File then
1004 WAI : constant ALI_Id :=
1005 ALI_Id (Get_Name_Table_Info (AFN));
1006 WTE : ALIs_Record renames ALIs.Table (WAI);
1009 if WTE.Restrictions.Set
1010 (No_Default_Initialization)
1012 Error_Msg_Unit_1 := UTE.Uname;
1013 Consistency_Error_Msg
1014 ("unit $ compiled without restriction "
1015 & "No_Default_Initialization");
1016 Error_Msg_Unit_1 := Withs.Table (W).Uname;
1017 Consistency_Error_Msg
1018 ("withs unit $, compiled with restriction "
1019 & "No_Default_Initialization");
1028 end Check_Consistent_Restriction_No_Default_Initialization;
1030 ---------------------------------------------------
1031 -- Check_Consistent_Zero_Cost_Exception_Handling --
1032 ---------------------------------------------------
1034 -- Check consistent zero cost exception handling. The rule is that
1035 -- all units must have the same exception handling mechanism.
1037 procedure Check_Consistent_Zero_Cost_Exception_Handling is
1039 Check_Mechanism : for A1 in ALIs.First + 1 .. ALIs.Last loop
1040 if ALIs.Table (A1).Zero_Cost_Exceptions /=
1041 ALIs.Table (ALIs.First).Zero_Cost_Exceptions
1043 Error_Msg_File_1 := ALIs.Table (A1).Sfile;
1044 Error_Msg_File_2 := ALIs.Table (ALIs.First).Sfile;
1046 Consistency_Error_Msg ("{ and { compiled with different "
1047 & "exception handling mechanisms");
1049 end loop Check_Mechanism;
1050 end Check_Consistent_Zero_Cost_Exception_Handling;
1052 -------------------------------
1053 -- Check_Duplicated_Subunits --
1054 -------------------------------
1056 procedure Check_Duplicated_Subunits is
1058 for J in Sdep.First .. Sdep.Last loop
1059 if Sdep.Table (J).Subunit_Name /= No_Name then
1060 Get_Decoded_Name_String (Sdep.Table (J).Subunit_Name);
1061 Name_Len := Name_Len + 2;
1062 Name_Buffer (Name_Len - 1) := '%';
1064 -- See if there is a body or spec with the same name
1066 for K in Boolean loop
1068 Name_Buffer (Name_Len) := 'b';
1070 Name_Buffer (Name_Len) := 's';
1074 Unit : constant Unit_Name_Type := Name_Find;
1075 Info : constant Int := Get_Name_Table_Info (Unit);
1080 Write_Str ("error: subunit """);
1081 Write_Name_Decoded (Sdep.Table (J).Subunit_Name);
1082 Write_Str (""" in file """);
1083 Write_Name_Decoded (Sdep.Table (J).Sfile);
1086 Write_Str (" has same name as unit """);
1087 Write_Unit_Name (Units.Table (Unit_Id (Info)).Uname);
1088 Write_Str (""" found in file """);
1089 Write_Name_Decoded (Units.Table (Unit_Id (Info)).Sfile);
1092 Write_Str (" this is not allowed within a single "
1093 & "partition (RM 10.2(19))");
1095 Osint.Exit_Program (Osint.E_Fatal);
1101 end Check_Duplicated_Subunits;
1103 --------------------
1104 -- Check_Versions --
1105 --------------------
1107 procedure Check_Versions is
1108 VL : constant Natural := ALIs.Table (ALIs.First).Ver_Len;
1111 for A in ALIs.First .. ALIs.Last loop
1112 if ALIs.Table (A).Ver_Len /= VL
1113 or else ALIs.Table (A).Ver (1 .. VL) /=
1114 ALIs.Table (ALIs.First).Ver (1 .. VL)
1116 Error_Msg_File_1 := ALIs.Table (A).Sfile;
1117 Error_Msg_File_2 := ALIs.Table (ALIs.First).Sfile;
1119 Consistency_Error_Msg
1120 ("{ and { compiled with different GNAT versions");
1125 ---------------------------
1126 -- Consistency_Error_Msg --
1127 ---------------------------
1129 procedure Consistency_Error_Msg (Msg : String) is
1131 if Tolerate_Consistency_Errors then
1133 -- If consistency errors are tolerated,
1134 -- output the message as a warning.
1136 Error_Msg ('?' & Msg);
1138 -- Otherwise the consistency error is a true error
1143 end Consistency_Error_Msg;
1149 function Same_Unit (U1 : Unit_Name_Type; U2 : Name_Id) return Boolean is
1151 -- Note, the string U1 has a terminating %s or %b, U2 does not
1153 if Length_Of_Name (U1) - 2 = Length_Of_Name (U2) then
1154 Get_Name_String (U1);
1157 U1_Str : constant String := Name_Buffer (1 .. Name_Len - 2);
1159 Get_Name_String (U2);
1160 return U1_Str = Name_Buffer (1 .. Name_Len);