Index: lib.adb
===================================================================
--- lib.adb	(revision 176998)
+++ lib.adb	(working copy)
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 1992-2010, Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2011, Free Software Foundation, Inc.         --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -33,16 +33,18 @@
 --  Subprogram ordering not enforced in this unit
 --  (because of some logical groupings).
 
-with Atree;   use Atree;
-with Einfo;   use Einfo;
-with Fname;   use Fname;
-with Output;  use Output;
-with Sinfo;   use Sinfo;
-with Sinput;  use Sinput;
-with Stand;   use Stand;
-with Stringt; use Stringt;
-with Tree_IO; use Tree_IO;
-with Uname;   use Uname;
+with Atree;    use Atree;
+with Csets;    use Csets;
+with Einfo;    use Einfo;
+with Fname;    use Fname;
+with Output;   use Output;
+with Sinfo;    use Sinfo;
+with Sinput;   use Sinput;
+with Stand;    use Stand;
+with Stringt;  use Stringt;
+with Tree_IO;  use Tree_IO;
+with Uname;    use Uname;
+with Widechar; use Widechar;
 
 package body Lib is
 
@@ -478,6 +480,62 @@
       return Check_Same_Extended_Unit (S1, S2) = Yes_Before;
    end Earlier_In_Extended_Unit;
 
+   -----------------------
+   -- Exact_Source_Name --
+   -----------------------
+
+   function Exact_Source_Name (Loc : Source_Ptr) return String is
+      U    : constant Unit_Number_Type  := Get_Source_Unit (Loc);
+      Buf  : constant Source_Buffer_Ptr := Source_Text (Source_Index (U));
+      Orig : constant Source_Ptr        := Original_Location (Loc);
+      P    : Source_Ptr;
+
+      WC   : Char_Code;
+      Err  : Boolean;
+      pragma Warnings (Off, WC);
+      pragma Warnings (Off, Err);
+
+   begin
+      --  Entity is character literal
+
+      if Buf (Orig) = ''' then
+         return String (Buf (Orig .. Orig + 2));
+
+      --  Entity is operator symbol
+
+      elsif Buf (Orig) = '"' or else Buf (Orig) = '%' then
+         P := Orig;
+
+         loop
+            P := P + 1;
+            exit when Buf (P) = Buf (Orig);
+         end loop;
+
+         return String (Buf (Orig .. P));
+
+      --  Entity is identifier
+
+      else
+         P := Orig;
+
+         loop
+            if Is_Start_Of_Wide_Char (Buf, P) then
+               Scan_Wide (Buf, P, WC, Err);
+            elsif not Identifier_Char (Buf (P)) then
+               exit;
+            else
+               P := P + 1;
+            end if;
+         end loop;
+
+         --  Write out the identifier by copying the exact source characters
+         --  used in its declaration. Note that this means wide characters will
+         --  be in their original encoded form.
+
+         return String (Buf (Orig .. P - 1));
+      end if;
+   end Exact_Source_Name;
+
    ----------------------------
    -- Entity_Is_In_Main_Unit --
    ----------------------------
Index: lib.ads
===================================================================
--- lib.ads	(revision 176998)
+++ lib.ads	(working copy)
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---          Copyright (C) 1992-2010, Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2011, Free Software Foundation, Inc.         --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -39,6 +39,9 @@
 
 package Lib is
 
+   type Unit_Ref_Table is array (Pos range <>) of Unit_Number_Type;
+   --  Type to hold list of indirect references to unit number table
+
    type Compiler_State_Type is (Parsing, Analyzing);
    Compiler_State : Compiler_State_Type;
    --  Indicates current state of compilation. This is used to implement the
@@ -551,6 +554,10 @@
    --  extended unit. Note: this routine will not give reliable results if
    --  called after Sprint has been called with -gnatD set.
 
+   function Exact_Source_Name (Loc : Source_Ptr) return String;
+   --  Return the name of an entity at location Loc exactly as written in the
+   --  source.
+
    function Compilation_Switches_Last return Nat;
    --  Return the count of stored compilation switches
 
@@ -816,9 +823,6 @@
    --  is in the main source file. This ensures that not found messages and
    --  circular dependency messages reference the original with in this source.
 
-   type Unit_Ref_Table is array (Pos range <>) of Unit_Number_Type;
-   --  Type to hold list of indirect references to unit number table
-
    type Load_Stack_Entry is record
       Unit_Number : Unit_Number_Type;
       With_Node   : Node_Id;
Index: lib-writ.adb
===================================================================
--- lib-writ.adb	(revision 177168)
+++ lib-writ.adb	(working copy)
@@ -32,6 +32,7 @@
 with Fname.UF; use Fname.UF;
 with Lib.Util; use Lib.Util;
 with Lib.Xref; use Lib.Xref;
+               use Lib.Xref.ALFA;
 with Nlists;   use Nlists;
 with Gnatvsn;  use Gnatvsn;
 with Opt;      use Opt;
@@ -1293,7 +1294,9 @@
 
       --  Output cross-references
 
-      Output_References;
+      if Opt.Xref_Active then
+         Output_References;
+      end if;
 
       --  Output SCO information if present
 
@@ -1301,11 +1304,12 @@
          SCO_Output;
       end if;
 
-      --  Output references by subprogram
+      --  Output ALFA information if needed
 
-      if ALFA_Mode then
-         Write_Info_EOL;
-         Output_Local_References;
+      if Opt.Xref_Active and then ALFA_Mode then
+         Collect_ALFA (Sdep_Table => Sdep_Table,
+                       Num_Sdep   => Num_Sdep);
+         Output_ALFA;
       end if;
 
       --  Output final blank line and we are done. This final blank line is
Index: lib-writ.ads
===================================================================
--- lib-writ.ads	(revision 176998)
+++ lib-writ.ads	(working copy)
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---          Copyright (C) 1992-2010, Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2011, Free Software Foundation, Inc.         --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -710,6 +710,13 @@
    --  reference data. See the spec of Par_SCO for full details of the format.
 
    ----------------------
+   -- ALFA Information --
+   ----------------------
+
+   --  The ALFA information follows the SCO information. See the spec of Alfa
+   --  for full details of the format.
+
+   ----------------------
    -- Global Variables --
    ----------------------
 
Index: xref_lib.adb
===================================================================
--- xref_lib.adb	(revision 176998)
+++ xref_lib.adb	(working copy)
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 1998-2010, Free Software Foundation, Inc.         --
+--          Copyright (C) 1998-2011, Free Software Foundation, Inc.         --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -1764,11 +1764,24 @@
          then
             begin
                Open (Ali_Name.all, ALIfile);
-               while ALIfile.Buffer (ALIfile.Current_Line) /= EOF loop
+
+               --  The cross-reference section in the ALI file may be followed
+               --  by other sections, which can be identified by the starting
+               --  character of every line, which should neither be 'X' nor a
+               --  figure in '1' .. '9'.
+
+               --  The loop tests below also take into account the end-of-file
+               --  possibility.
+
+               while ALIfile.Buffer (ALIfile.Current_Line) = 'X' loop
                   Parse_X_Filename (ALIfile);
-                  Parse_Identifier_Info
-                    (Pattern, ALIfile, Local_Symbols,
-                     Der_Info, Type_Tree, Wide_Search, Labels_As_Ref => True);
+
+                  while ALIfile.Buffer (ALIfile.Current_Line) in '1' .. '9'
+                  loop
+                     Parse_Identifier_Info
+                       (Pattern, ALIfile, Local_Symbols, Der_Info, Type_Tree,
+                        Wide_Search, Labels_As_Ref => True);
+                  end loop;
                end loop;
 
             exception
@@ -1818,11 +1831,23 @@
             if Read_Only or else Is_Writable_File (F) then
                Open (F, ALIfile, True);
 
-               while ALIfile.Buffer (ALIfile.Current_Line) /= EOF loop
+               --  The cross-reference section in the ALI file may be followed
+               --  by other sections, which can be identified by the starting
+               --  character of every line, which should neither be 'X' nor a
+               --  figure in '1' .. '9'.
+
+               --  The loop tests below also take into account the end-of-file
+               --  possibility.
+
+               while ALIfile.Buffer (ALIfile.Current_Line) = 'X' loop
                   Parse_X_Filename (ALIfile);
-                  Parse_Identifier_Info
-                    (Null_Pattern, ALIfile, Local_Symbols, Der_Info,
-                     Labels_As_Ref => False);
+
+                  while ALIfile.Buffer (ALIfile.Current_Line) in '1' .. '9'
+                  loop
+                     Parse_Identifier_Info
+                       (Null_Pattern, ALIfile, Local_Symbols, Der_Info,
+                        Labels_As_Ref => False);
+                  end loop;
                end loop;
             end if;
 
Index: alfa.adb
===================================================================
--- alfa.adb	(revision 0)
+++ alfa.adb	(revision 0)
@@ -0,0 +1,203 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                                 A L F A                                  --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--             Copyright (C) 2011, Free Software Foundation, Inc.           --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
+-- for  more details.  You should have  received  a copy of the GNU General --
+-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license.          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with Output;   use Output;
+with Put_ALFA;
+
+package body ALFA is
+
+   -----------
+   -- dalfa --
+   -----------
+
+   procedure dalfa is
+   begin
+      --  Dump ALFA file table
+
+      Write_Line ("ALFA File Table");
+      Write_Line ("---------------");
+
+      for Index in 1 .. ALFA_File_Table.Last loop
+         declare
+            AFR : ALFA_File_Record renames ALFA_File_Table.Table (Index);
+
+         begin
+            Write_Str ("  ");
+            Write_Int (Int (Index));
+            Write_Str (".  File_Num = ");
+            Write_Int (Int (AFR.File_Num));
+            Write_Str ("  File_Name = """);
+
+            if AFR.File_Name /= null then
+               Write_Str (AFR.File_Name.all);
+            end if;
+
+            Write_Char ('"');
+            Write_Str ("  From = ");
+            Write_Int (Int (AFR.From_Scope));
+            Write_Str ("  To = ");
+            Write_Int (Int (AFR.To_Scope));
+            Write_Eol;
+         end;
+      end loop;
+
+      --  Dump ALFA scope table
+
+      Write_Eol;
+      Write_Line ("ALFA Scope Table");
+      Write_Line ("----------------");
+
+      for Index in 1 .. ALFA_Scope_Table.Last loop
+         declare
+            ASR : ALFA_Scope_Record renames ALFA_Scope_Table.Table (Index);
+
+         begin
+            Write_Str ("  ");
+            Write_Int (Int (Index));
+            Write_Str (".  File_Num = ");
+            Write_Int (Int (ASR.File_Num));
+            Write_Str ("  Scope_Num = ");
+            Write_Int (Int (ASR.Scope_Num));
+            Write_Str ("  Scope_Name = """);
+
+            if ASR.Scope_Name /= null then
+               Write_Str (ASR.Scope_Name.all);
+            end if;
+
+            Write_Char ('"');
+            Write_Str  ("  Line = ");
+            Write_Int  (Int (ASR.Line));
+            Write_Str  ("  Col = ");
+            Write_Int  (Int (ASR.Col));
+            Write_Str  ("  Type = ");
+            Write_Char (ASR.Stype);
+            Write_Str  ("  From = ");
+            Write_Int  (Int (ASR.From_Xref));
+            Write_Str  ("  To = ");
+            Write_Int  (Int (ASR.To_Xref));
+            Write_Str  ("  Scope_Entity = ");
+            Write_Int  (Int (ASR.Scope_Entity));
+            Write_Eol;
+         end;
+      end loop;
+
+      --  Dump ALFA cross-reference table
+
+      Write_Eol;
+      Write_Line ("ALFA Xref Table");
+      Write_Line ("---------------");
+
+      for Index in 1 .. ALFA_Xref_Table.Last loop
+         declare
+            AXR : ALFA_Xref_Record renames ALFA_Xref_Table.Table (Index);
+
+         begin
+            Write_Str  ("  ");
+            Write_Int  (Int (Index));
+            Write_Str (".  Entity_Name = """);
+
+            if AXR.Entity_Name /= null then
+               Write_Str (AXR.Entity_Name.all);
+            end if;
+
+            Write_Char ('"');
+            Write_Str ("  Entity_Line = ");
+            Write_Int (Int (AXR.Entity_Line));
+            Write_Str ("  Entity_Col = ");
+            Write_Int (Int (AXR.Entity_Col));
+            Write_Str ("  File_Num = ");
+            Write_Int (Int (AXR.File_Num));
+            Write_Str ("  Scope_Num = ");
+            Write_Int (Int (AXR.Scope_Num));
+            Write_Str ("  Line = ");
+            Write_Int (Int (AXR.Line));
+            Write_Str ("  Col = ");
+            Write_Int (Int (AXR.Col));
+            Write_Str ("  Type = ");
+            Write_Char (AXR.Rtype);
+            Write_Eol;
+         end;
+      end loop;
+   end dalfa;
+
+   ----------------
+   -- Initialize --
+   ----------------
+
+   procedure Initialize_ALFA_Tables is
+   begin
+      ALFA_File_Table.Init;
+      ALFA_Scope_Table.Init;
+      ALFA_Xref_Table.Init;
+   end Initialize_ALFA_Tables;
+
+   -----------
+   -- palfa --
+   -----------
+
+   procedure palfa is
+
+      procedure Write_Info_Char (C : Character) renames Write_Char;
+      --  Write one character;
+
+      function Write_Info_Col return Positive;
+      --  Return next column for writing
+
+      procedure Write_Info_Initiate (Key : Character) renames Write_Char;
+      --  Start new one and write one character;
+
+      procedure Write_Info_Nat (N : Nat);
+      --  Write value of N
+
+      procedure Write_Info_Terminate renames Write_Eol;
+      --  Terminate current line
+
+      --------------------
+      -- Write_Info_Col --
+      --------------------
+
+      function Write_Info_Col return Positive is
+      begin
+         return Positive (Column);
+      end Write_Info_Col;
+
+      --------------------
+      -- Write_Info_Nat --
+      --------------------
+
+      procedure Write_Info_Nat (N : Nat) is
+      begin
+         Write_Int (N);
+      end Write_Info_Nat;
+
+      procedure Debug_Put_ALFA is new Put_ALFA;
+
+      --  Start of processing for palfa
+
+   begin
+      Debug_Put_ALFA;
+   end palfa;
+
+end ALFA;
Index: alfa.ads
===================================================================
--- alfa.ads	(revision 0)
+++ alfa.ads	(revision 0)
@@ -0,0 +1,316 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                                 A L F A                                  --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--             Copyright (C) 2011, Free Software Foundation, Inc.           --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
+-- for  more details.  You should have  received  a copy of the GNU General --
+-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license.          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package defines tables used to store information needed for the ALFA
+--  mode. It is used by procedures in Lib.Xref.ALFA to build the ALFA
+--  information before writing it out to the ALI file, and by Get_ALFA/Put_ALFA
+--  to read and write the text form that is used in the ALI file.
+
+with Types;      use Types;
+with GNAT.Table;
+
+package ALFA is
+
+   --  ALFA information can exist in one of two forms. In the ALI file, it is
+   --  represented using a text format that is described in this specification.
+   --  Internally it is stored using three tables ALFA_Xref_Table,
+   --  ALFA_Scope_Table and ALFA_File_Table, which are also defined in this
+   --  unit.
+
+   --  Lib.Xref.ALFA is part of the compiler. It extracts ALFA information from
+   --  the complete set of cross-references generated during compilation.
+
+   --  Get_ALFA reads the text lines in ALI format and populates the internal
+   --  tables with corresponding information.
+
+   --  Put_ALFA reads the internal tables and generates text lines in the ALI
+   --  format.
+
+   ---------------------
+   -- ALFA ALI Format --
+   ---------------------
+
+   --  ALFA information is generated on a unit-by-unit basis in the ALI file,
+   --  using lines that start with the identifying character F ("Formal").
+   --  These lines are generated if one of the -gnatd.E (SPARK generation mode)
+   --  or gnatd.F (Why generation mode) switches is set.
+
+   --  The ALFA information follows the cross-reference information, so it
+   --  needs not be read by tools like gnatbind, gnatmake etc.
+
+   --  -------------------
+   --  -- Scope Section --
+   --  -------------------
+
+   --  A first section defines the scopes in which entities are defined and
+   --  referenced. A scope is a package/subprogram declaration/body. Note that
+   --  a package declaration and body define two different scopes. Similarly, a
+   --  subprogram declaration and body, when both present, define two different
+   --  scopes.
+
+   --    FD dependency-number filename
+
+   --      This header precedes scope information for the unit identified by
+   --      dependency number and file name. The dependency number is the index
+   --      into the generated D lines and is ones-origin (e.g. 2 = reference to
+   --      second generated D line).
+
+   --      The list of FD lines should match the list of D lines defined in the
+   --      ALI file, in the same order.
+
+   --      Note that the filename here will reflect the original name if a
+   --      Source_Reference pragma was encountered (since all line number
+   --      references will be with respect to the original file).
+
+   --      Note: the filename is redundant in that it could be deduced from the
+   --      corresponding D line, but it is convenient at least for human
+   --      reading of the ALFA information, and means that the ALFA information
+   --      can stand on its own without needing other parts of the ALI file.
+
+   --    FS . scope line type col entity
+
+   --      scope is the ones-origin scope number for the current file (e.g. 2 =
+   --      reference to the second FS line in this FD block).
+
+   --      line is the line number of the scope entity. The name of the entity
+   --      starts in column col. Columns are numbered from one, and if
+   --      horizontal tab characters are present, the column number is computed
+   --      assuming standard 1,9,17,.. tab stops. For example, if the entity is
+   --      the first token on the line, and is preceded by space-HT-space, then
+   --      the column would be column 10.
+
+   --      type is a single letter identifying the type of the entity, using
+   --      the same code as in cross-references:
+
+   --        K = package
+   --        V = function
+   --        U = procedure
+
+   --      col is the column number of the scope entity
+
+   --      entity is the name of the scope entity, with casing in the canonical
+   --      casing for the source file where it is defined.
+
+   --  ------------------
+   --  -- Xref Section --
+   --  ------------------
+
+   --  A second section defines cross-references useful for computing the set
+   --  of global variables read/written in each subprogram/package.
+
+   --    FX dependency-number filename . entity-number entity
+
+   --      dependency-number and filename identity a file in FD lines
+
+   --      entity-number and identity identify a scope entity in FS lines for
+   --      the file previously identified.
+
+   --    line col entity ref*
+
+   --      line is the line number of the referenced entity
+
+   --      col is the column number of the referenced entity
+
+   --      entity is the name of the referenced entity as written in the source
+   --      file where it is defined.
+
+   --  There may be zero or more ref entries on each line
+
+   --    (file |)? ((. scope :)? line type col)*
+
+   --      file is the dependency number of the file with the reference. It and
+   --      the following vertical bar are omitted if the file is the same as
+   --      the previous ref, and the refs for the current file are first (and
+   --      do not need a bar).
+
+   --      scope is the scope number of the scope with the reference. It and
+   --      the following colon are omitted if the scope is the same as the
+   --      previous ref, and the refs for the current scope are first (and do
+   --      not need a colon).
+
+   --      line is the line number of the reference
+
+   --      col is the column number of the reference
+
+   --      type is one of the following, using the same code as in
+   --      cross-references:
+
+   --        m = modification
+   --        r = reference
+   --        s = subprogram reference in a static call
+
+   --    Examples: ??? add examples here
+
+   ----------------
+   -- Xref Table --
+   ----------------
+
+   --  The following table records ALFA cross-references
+
+   type Xref_Index is new Int;
+   --  Used to index values in this table. Values start at 1 and are assigned
+   --  sequentially as entries are constructed.
+
+   type ALFA_Xref_Record is record
+      Entity_Name : String_Ptr;
+      --  Pointer to entity name in ALI file
+
+      Entity_Line : Nat;
+      --  Line number for the entity referenced
+
+      Entity_Col : Nat;
+      --  Column number for the entity referenced
+
+      File_Num : Nat;
+      --  Set to the file dependency number for the cross-reference. Note
+      --  that if no file entry is present explicitly, this is just a copy
+      --  of the reference for the current cross-reference section.
+
+      Scope_Num : Nat;
+      --  Set to the scope number for the cross-reference. Note that if no
+      --  scope entry is present explicitly, this is just a copy of the
+      --  reference for the current cross-reference section.
+
+      Line : Nat;
+      --  Line number for the reference
+
+      Rtype : Character;
+      --  Indicates type of reference, using code used in ALI file:
+      --    r = reference
+      --    m = modification
+      --    s = call
+
+      Col : Nat;
+      --  Column number for the reference
+   end record;
+
+   package ALFA_Xref_Table is new GNAT.Table (
+     Table_Component_Type => ALFA_Xref_Record,
+     Table_Index_Type     => Xref_Index,
+     Table_Low_Bound      => 1,
+     Table_Initial        => 2000,
+     Table_Increment      => 300);
+
+   -----------------
+   -- Scope Table --
+   -----------------
+
+   --  This table keeps track of the scopes and the corresponding starting and
+   --  ending indexes (From, To) in the Xref table.
+
+   type Scope_Index is new Int;
+   --  Used to index values in this table. Values start at 1 and are assigned
+   --  sequentially as entries are constructed.
+
+   type ALFA_Scope_Record is record
+      Scope_Name : String_Ptr;
+      --  Pointer to scope name in ALI file
+
+      File_Num : Nat;
+      --  Set to the file dependency number for the scope
+
+      Scope_Num : Nat;
+      --  Set to the scope number for the scope
+
+      Line : Nat;
+      --  Line number for the scope
+
+      Stype : Character;
+      --  Indicates type of scope, using code used in ALI file:
+      --    K = package
+      --    V = function
+      --    U = procedure
+
+      Col : Nat;
+      --  Column number for the scope
+
+      From_Xref : Xref_Index;
+      --  Starting index in Xref table for this scope
+
+      To_Xref : Xref_Index;
+      --  Ending index in Xref table for this scope
+
+      --  The following component is only used in-memory, not printed out in
+      --  ALI file.
+
+      Scope_Entity : Entity_Id := Empty;
+      --  Entity (subprogram or package) for the scope
+   end record;
+
+   package ALFA_Scope_Table is new GNAT.Table (
+     Table_Component_Type => ALFA_Scope_Record,
+     Table_Index_Type     => Scope_Index,
+     Table_Low_Bound      => 1,
+     Table_Initial        => 200,
+     Table_Increment      => 300);
+
+   ----------------
+   -- File Table --
+   ----------------
+
+   --  This table keeps track of the units and the corresponding starting and
+   --  ending indexes (From, To) in the Scope table.
+
+   type File_Index is new Int;
+   --  Used to index values in this table. Values start at 1 and are assigned
+   --  sequentially as entries are constructed.
+
+   type ALFA_File_Record is record
+      File_Name : String_Ptr;
+      --  Pointer to file name in ALI file
+
+      File_Num : Nat;
+      --  Dependency number in ALI file
+
+      From_Scope : Scope_Index;
+      --  Starting index in Scope table for this unit
+
+      To_Scope : Scope_Index;
+      --  Ending index in Scope table for this unit
+   end record;
+
+   package ALFA_File_Table is new GNAT.Table (
+     Table_Component_Type => ALFA_File_Record,
+     Table_Index_Type     => File_Index,
+     Table_Low_Bound      => 1,
+     Table_Initial        => 20,
+     Table_Increment      => 200);
+
+   -----------------
+   -- Subprograms --
+   -----------------
+
+   procedure dalfa;
+   --  Debug routine to dump internal ALFA tables. This is a raw format dump
+   --  showing exactly what the tables contain.
+
+   procedure Initialize_ALFA_Tables;
+   --  Reset tables for a new compilation
+
+   procedure palfa;
+   --  Debugging procedure to output contents of ALFA binary tables in the
+   --  format in which they appear in an ALI file.
+
+end ALFA;
Index: ali.adb
===================================================================
--- ali.adb	(revision 176998)
+++ ali.adb	(working copy)
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 1992-2010, Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2011, Free Software Foundation, Inc.         --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -55,6 +55,8 @@
       'X'    => True,   -- xref
       'S'    => True,   -- specific dispatching
       'Y'    => True,   -- limited_with
+      'C'    => True,   -- SCO information
+      'F'    => True,   -- ALFA information
       others => False);
 
    --------------------
@@ -2436,10 +2438,11 @@
 
       --  Here after dealing with xref sections
 
-      if C /= EOF and then C /= 'X' then
-         Fatal_Error;
-      end if;
+      --  Ignore remaining lines, which belong to an additional section of the
+      --  ALI file not considered here (like SCO or ALFA).
 
+      Check_Unknown_Line;
+
       return Id;
 
    exception
Index: put_alfa.adb
===================================================================
--- put_alfa.adb	(revision 0)
+++ put_alfa.adb	(revision 0)
@@ -0,0 +1,220 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                             P U T _ A L F A                              --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--             Copyright (C) 2011, Free Software Foundation, Inc.           --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
+-- for  more details.  You should have  received  a copy of the GNU General --
+-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license.          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with ALFA; use ALFA;
+
+procedure Put_ALFA is
+begin
+   --  Loop through entries in ALFA_File_Table
+
+   for J in 1 .. ALFA_File_Table.Last loop
+      declare
+         F     : ALFA_File_Record renames ALFA_File_Table.Table (J);
+
+         Start : Scope_Index;
+         Stop  : Scope_Index;
+
+      begin
+         Start := F.From_Scope;
+         Stop  := F.To_Scope;
+
+         if Start <= Stop then
+            Write_Info_Initiate ('F');
+            Write_Info_Char ('D');
+            Write_Info_Char (' ');
+            Write_Info_Nat (F.File_Num);
+            Write_Info_Char (' ');
+
+            for N in F.File_Name'Range loop
+               Write_Info_Char (F.File_Name (N));
+            end loop;
+
+            Write_Info_Terminate;
+         end if;
+
+         --  Loop through scope entries for this file
+
+         loop
+            exit when Start = Stop + 1;
+            pragma Assert (Start <= Stop);
+
+            declare
+               S : ALFA_Scope_Record renames ALFA_Scope_Table.Table (Start);
+
+            begin
+               Write_Info_Initiate ('F');
+               Write_Info_Char ('S');
+               Write_Info_Char (' ');
+               Write_Info_Char ('.');
+               Write_Info_Nat (S.Scope_Num);
+               Write_Info_Char (' ');
+               Write_Info_Nat (S.Line);
+               Write_Info_Char (S.Stype);
+               Write_Info_Nat (S.Col);
+               Write_Info_Char (' ');
+
+               for N in S.Scope_Name'Range loop
+                  Write_Info_Char (S.Scope_Name (N));
+               end loop;
+
+               Write_Info_Terminate;
+            end;
+
+            Start := Start + 1;
+         end loop;
+      end;
+   end loop;
+
+   --  Loop through entries in ALFA_File_Table
+
+   for J in 1 .. ALFA_File_Table.Last loop
+      declare
+         F           : ALFA_File_Record renames ALFA_File_Table.Table (J);
+
+         Start       : Scope_Index;
+         Stop        : Scope_Index;
+
+         File        : Nat;
+         Scope       : Nat;
+         Entity_Line : Nat;
+         Entity_Col  : Nat;
+
+      begin
+         Start := F.From_Scope;
+         Stop  := F.To_Scope;
+
+         --  Loop through scope entries for this file
+
+         loop
+            exit when Start = Stop + 1;
+            pragma Assert (Start <= Stop);
+
+            Output_One_Scope : declare
+               S : ALFA_Scope_Record renames ALFA_Scope_Table.Table (Start);
+
+               XStart : Xref_Index;
+               XStop  : Xref_Index;
+
+            begin
+               XStart := S.From_Xref;
+               XStop  := S.To_Xref;
+
+               if XStart > XStop then
+                  goto Continue;
+               end if;
+
+               Write_Info_Initiate ('F');
+               Write_Info_Char ('X');
+               Write_Info_Char (' ');
+               Write_Info_Nat (F.File_Num);
+               Write_Info_Char (' ');
+
+               for N in F.File_Name'Range loop
+                  Write_Info_Char (F.File_Name (N));
+               end loop;
+
+               Write_Info_Char (' ');
+               Write_Info_Char ('.');
+               Write_Info_Nat (S.Scope_Num);
+               Write_Info_Char (' ');
+
+               for N in S.Scope_Name'Range loop
+                  Write_Info_Char (S.Scope_Name (N));
+               end loop;
+
+               File        := F.File_Num;
+               Scope       := S.Scope_Num;
+               Entity_Line := 0;
+               Entity_Col  := 0;
+
+               --  Loop through cross reference entries for this scope
+
+               loop
+                  exit when XStart = XStop + 1;
+                  pragma Assert (XStart <= XStop);
+
+                  Output_One_Xref : declare
+                     R : ALFA_Xref_Record renames
+                           ALFA_Xref_Table.Table (XStart);
+
+                  begin
+                     if R.Entity_Line /= Entity_Line
+                       or else R.Entity_Col /= Entity_Col
+                     then
+                        Write_Info_Terminate;
+
+                        Write_Info_Initiate ('F');
+                        Write_Info_Char (' ');
+                        Write_Info_Nat (R.Entity_Line);
+                        Write_Info_Char (' ');
+                        Write_Info_Nat (R.Entity_Col);
+                        Write_Info_Char (' ');
+
+                        for N in R.Entity_Name'Range loop
+                           Write_Info_Char (R.Entity_Name (N));
+                        end loop;
+
+                        Entity_Line := R.Entity_Line;
+                        Entity_Col  := R.Entity_Col;
+                     end if;
+
+                     if Write_Info_Col > 72 then
+                        Write_Info_Terminate;
+                        Write_Info_Initiate ('.');
+                     end if;
+
+                     Write_Info_Char (' ');
+
+                     if R.File_Num /= File then
+                        Write_Info_Nat (R.File_Num);
+                        Write_Info_Char ('|');
+                        File  := R.File_Num;
+                        Scope := 0;
+                     end if;
+
+                     if R.Scope_Num /= Scope then
+                        Write_Info_Char ('.');
+                        Write_Info_Nat (R.Scope_Num);
+                        Write_Info_Char (':');
+                        Scope := R.Scope_Num;
+                     end if;
+
+                     Write_Info_Nat (R.Line);
+                     Write_Info_Char (R.Rtype);
+                     Write_Info_Nat (R.Col);
+                  end Output_One_Xref;
+
+                  XStart := XStart + 1;
+               end loop;
+
+               Write_Info_Terminate;
+            end Output_One_Scope;
+
+         <<Continue>>
+            Start := Start + 1;
+         end loop;
+      end;
+   end loop;
+end Put_ALFA;
Index: lib-xref-alfa.adb
===================================================================
--- lib-xref-alfa.adb	(revision 0)
+++ lib-xref-alfa.adb	(revision 0)
@@ -0,0 +1,938 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                        L I B . X R E F . A L F A                         --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--             Copyright (C) 2011, Free Software Foundation, Inc.           --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
+-- for  more details.  You should have  received  a copy of the GNU General --
+-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license.          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with ALFA;        use ALFA;
+with Einfo;       use Einfo;
+with Put_ALFA;
+with GNAT.HTable;
+
+separate (Lib.Xref)
+package body ALFA is
+
+   ---------------------
+   -- Local Constants --
+   ---------------------
+
+   --  True for each entity kind used in ALFA
+   ALFA_Entities : constant array (Entity_Kind) of Boolean :=
+     (E_Void                                       => False,
+      E_Variable                                   => True,
+      E_Component                                  => False,
+      E_Constant                                   => True,
+      E_Discriminant                               => False,
+
+      E_Loop_Parameter                             => True,
+      E_In_Parameter                               => True,
+      E_Out_Parameter                              => True,
+      E_In_Out_Parameter                           => True,
+      E_Generic_In_Out_Parameter                   => False,
+
+      E_Generic_In_Parameter                       => False,
+      E_Named_Integer                              => False,
+      E_Named_Real                                 => False,
+      E_Enumeration_Type                           => False,
+      E_Enumeration_Subtype                        => False,
+
+      E_Signed_Integer_Type                        => False,
+      E_Signed_Integer_Subtype                     => False,
+      E_Modular_Integer_Type                       => False,
+      E_Modular_Integer_Subtype                    => False,
+      E_Ordinary_Fixed_Point_Type                  => False,
+
+      E_Ordinary_Fixed_Point_Subtype               => False,
+      E_Decimal_Fixed_Point_Type                   => False,
+      E_Decimal_Fixed_Point_Subtype                => False,
+      E_Floating_Point_Type                        => False,
+      E_Floating_Point_Subtype                     => False,
+
+      E_Access_Type                                => False,
+      E_Access_Subtype                             => False,
+      E_Access_Attribute_Type                      => False,
+      E_Allocator_Type                             => False,
+      E_General_Access_Type                        => False,
+
+      E_Access_Subprogram_Type                     => False,
+      E_Access_Protected_Subprogram_Type           => False,
+      E_Anonymous_Access_Subprogram_Type           => False,
+      E_Anonymous_Access_Protected_Subprogram_Type => False,
+      E_Anonymous_Access_Type                      => False,
+
+      E_Array_Type                                 => False,
+      E_Array_Subtype                              => False,
+      E_String_Type                                => False,
+      E_String_Subtype                             => False,
+      E_String_Literal_Subtype                     => False,
+
+      E_Class_Wide_Type                            => False,
+      E_Class_Wide_Subtype                         => False,
+      E_Record_Type                                => False,
+      E_Record_Subtype                             => False,
+      E_Record_Type_With_Private                   => False,
+
+      E_Record_Subtype_With_Private                => False,
+      E_Private_Type                               => False,
+      E_Private_Subtype                            => False,
+      E_Limited_Private_Type                       => False,
+      E_Limited_Private_Subtype                    => False,
+
+      E_Incomplete_Type                            => False,
+      E_Incomplete_Subtype                         => False,
+      E_Task_Type                                  => False,
+      E_Task_Subtype                               => False,
+      E_Protected_Type                             => False,
+
+      E_Protected_Subtype                          => False,
+      E_Exception_Type                             => False,
+      E_Subprogram_Type                            => False,
+      E_Enumeration_Literal                        => False,
+      E_Function                                   => True,
+
+      E_Operator                                   => True,
+      E_Procedure                                  => True,
+      E_Entry                                      => False,
+      E_Entry_Family                               => False,
+      E_Block                                      => False,
+
+      E_Entry_Index_Parameter                      => False,
+      E_Exception                                  => False,
+      E_Generic_Function                           => False,
+      E_Generic_Package                            => False,
+      E_Generic_Procedure                          => False,
+
+      E_Label                                      => False,
+      E_Loop                                       => False,
+      E_Return_Statement                           => False,
+      E_Package                                    => False,
+
+      E_Package_Body                               => False,
+      E_Protected_Object                           => False,
+      E_Protected_Body                             => False,
+      E_Task_Body                                  => False,
+      E_Subprogram_Body                            => False);
+
+   --  True for each reference type used in ALFA
+   ALFA_References : constant array (Character) of Boolean :=
+     ('m' => True,
+      'r' => True,
+      's' => True,
+      others => False);
+
+   -----------------------
+   -- Local Subprograms --
+   -----------------------
+
+   procedure Add_ALFA_File (U : Unit_Number_Type; D : Nat);
+   --  Add file U and all scopes in U to the tables ALFA_File_Table and
+   --  ALFA_Scope_Table.
+
+   procedure Add_ALFA_Scope (N : Node_Id);
+   --  Add scope N to the table ALFA_Scope_Table
+
+   procedure Add_ALFA_Xrefs;
+   --  Filter table Xrefs to add all references used in ALFA to the table
+   --  ALFA_Xref_Table.
+
+   procedure Traverse_Declarations_Or_Statements  (L : List_Id);
+   procedure Traverse_Handled_Statement_Sequence  (N : Node_Id);
+   procedure Traverse_Package_Body                (N : Node_Id);
+   procedure Traverse_Package_Declaration         (N : Node_Id);
+   procedure Traverse_Subprogram_Body             (N : Node_Id);
+   --  Traverse the corresponding construct, generating ALFA scope table
+   --  entries.
+
+   -------------------
+   -- Add_ALFA_File --
+   -------------------
+
+   procedure Add_ALFA_File (U : Unit_Number_Type; D : Nat) is
+      Lu   : Node_Id;
+      From : Scope_Index;
+
+      S : constant Source_File_Index := Source_Index (U);
+   begin
+      --  Source file could be inexistant as a result of an error, if option
+      --  gnatQ is used.
+
+      if S = No_Source_File then
+         return;
+      end if;
+
+      From := ALFA_Scope_Table.Last + 1;
+
+      --  Get Unit (checking case of subunit)
+
+      Lu := Unit (Cunit (U));
+
+      if Nkind (Lu) = N_Subunit then
+         Lu := Proper_Body (Lu);
+      end if;
+
+      --  Traverse the unit
+
+      if Nkind (Lu) = N_Subprogram_Body then
+         Traverse_Subprogram_Body (Lu);
+
+      elsif Nkind (Lu) = N_Subprogram_Declaration then
+         Add_ALFA_Scope (Lu);
+
+      elsif Nkind (Lu) = N_Package_Declaration then
+         Traverse_Package_Declaration (Lu);
+
+      elsif Nkind (Lu) = N_Package_Body then
+         Traverse_Package_Body (Lu);
+
+      --  ??? TBD
+
+      elsif Nkind (Lu) = N_Generic_Package_Declaration then
+         null;
+
+      --  ??? TBD
+
+      elsif Nkind (Lu) in N_Generic_Instantiation then
+         null;
+
+      --  All other cases of compilation units (e.g. renamings), generate
+      --  no ALFA information.
+
+      else
+         null;
+      end if;
+
+      --  Update scope numbers
+
+      for S in From .. ALFA_Scope_Table.Last loop
+         declare
+            E : Entity_Id renames ALFA_Scope_Table.Table (S).Scope_Entity;
+         begin
+            if Lib.Get_Source_Unit (E) = U then
+               ALFA_Scope_Table.Table (S).Scope_Num := Int (S - From) + 1;
+               ALFA_Scope_Table.Table (S).File_Num  := D;
+
+            else
+               --  Remove scope S which is not located in unit U, for example
+               --  for scope inside generics that get instantiated.
+
+               for J in S .. ALFA_Scope_Table.Last - 1 loop
+                  ALFA_Scope_Table.Table (J) := ALFA_Scope_Table.Table (J + 1);
+               end loop;
+               ALFA_Scope_Table.Set_Last (ALFA_Scope_Table.Last - 1);
+            end if;
+         end;
+      end loop;
+
+      --  Make entry for new file in file table
+
+      Get_Name_String (Reference_Name (S));
+
+      ALFA_File_Table.Append (
+        (File_Name  => new String'(Name_Buffer (1 .. Name_Len)),
+         File_Num   => D,
+         From_Scope => From,
+         To_Scope   => ALFA_Scope_Table.Last));
+   end Add_ALFA_File;
+
+   --------------------
+   -- Add_ALFA_Scope --
+   --------------------
+
+   procedure Add_ALFA_Scope (N : Node_Id) is
+      E   : constant Entity_Id  := Defining_Entity (N);
+      Loc : constant Source_Ptr := Sloc (E);
+      Typ : Character;
+
+   begin
+      --  Ignore scopes without a proper location
+
+      if Sloc (N) = No_Location then
+         return;
+      end if;
+
+      case Ekind (E) is
+         when E_Function =>
+            Typ := 'V';
+
+         when E_Procedure =>
+            Typ := 'U';
+
+         when E_Subprogram_Body =>
+            declare
+               Spec : Node_Id;
+
+            begin
+               Spec := Parent (E);
+
+               if Nkind (Spec) = N_Defining_Program_Unit_Name then
+                  Spec := Parent (Spec);
+               end if;
+
+               if Nkind (Spec) = N_Function_Specification then
+                  Typ := 'V';
+               else
+                  pragma Assert
+                    (Nkind (Spec) = N_Procedure_Specification);
+                  Typ := 'U';
+               end if;
+            end;
+
+         when E_Package | E_Package_Body =>
+            Typ := 'K';
+
+         when E_Void =>
+            --  Compilation of prj-attr.adb with -gnatn creates a node with
+            --  entity E_Void for the package defined at a-charac.ads16:13
+
+            --  ??? TBD
+
+            return;
+
+         when others =>
+            raise Program_Error;
+      end case;
+
+      --  File_Num and Scope_Num are filled later. From_Xref and To_Xref are
+      --  filled even later, but are initialized to represent an empty range.
+
+      ALFA_Scope_Table.Append (
+        (Scope_Name   => new String'(Exact_Source_Name (Sloc (E))),
+         File_Num     => 0,
+         Scope_Num    => 0,
+         Line         => Nat (Get_Logical_Line_Number (Loc)),
+         Stype        => Typ,
+         Col          => Nat (Get_Column_Number (Loc)),
+         From_Xref    => 1,
+         To_Xref      => 0,
+         Scope_Entity => E));
+   end Add_ALFA_Scope;
+
+   --------------------
+   -- Add_ALFA_Xrefs --
+   --------------------
+
+   procedure Add_ALFA_Xrefs is
+      Prev_Scope_Idx  : Scope_Index;
+      Cur_Scope_Idx   : Scope_Index;
+      From_Xref_Idx   : Xref_Index;
+      Cur_Entity      : Entity_Id;
+      Cur_Entity_Name : String_Ptr;
+
+      package Scopes is
+         No_Scope : constant Nat := 0;
+         function Get_Scope_Num (N : Entity_Id) return Nat;
+         procedure Set_Scope_Num (N : Entity_Id; Num : Nat);
+      end Scopes;
+
+      package body Scopes is
+         type Scope is record
+            Num    : Nat;
+            Entity : Entity_Id;
+         end record;
+
+         type Scope_Hashed is range 0 .. 255;
+
+         function Scope_Hash (E : Entity_Id) return Scope_Hashed;
+
+         function Scope_Hash (E : Entity_Id) return Scope_Hashed is
+            Value  : constant Int := Int (E);
+            Modulo : constant Int := Int (Scope_Hashed'Last) + 1;
+         begin
+            return Scope_Hashed (Value - (Value / Modulo) * Modulo);
+         end Scope_Hash;
+
+         package Scopes is new GNAT.HTable.Simple_HTable
+           (Header_Num => Scope_Hashed,
+            Element    => Scope,
+            No_Element => (Num => No_Scope, Entity => Empty),
+            Key        => Entity_Id,
+            Hash       => Scope_Hash,
+            Equal      => "=");
+
+         function Get_Scope_Num (N : Entity_Id) return Nat is
+         begin
+            return Scopes.Get (N).Num;
+         end Get_Scope_Num;
+
+         procedure Set_Scope_Num (N : Entity_Id; Num : Nat) is
+         begin
+            Scopes.Set (K => N, E => Scope'(Num => Num, Entity => N));
+         end Set_Scope_Num;
+      end Scopes;
+
+      use Scopes;
+
+      Nrefs : Nat := Xrefs.Last;
+      --  Number of references in table. This value may get reset (reduced)
+      --  when we eliminate duplicate reference entries as well as references
+      --  not suitable for local cross-references.
+
+      Rnums : array (0 .. Nrefs) of Nat;
+      --  This array contains numbers of references in the Xrefs table. This
+      --  list is sorted in output order. The extra 0'th entry is convenient
+      --  for the call to sort. When we sort the table, we move the entries in
+      --  Rnums around, but we do not move the original table entries.
+
+      function Lt (Op1, Op2 : Natural) return Boolean;
+      --  Comparison function for Sort call
+
+      procedure Move (From : Natural; To : Natural);
+      --  Move procedure for Sort call
+
+      package Sorting is new GNAT.Heap_Sort_G (Move, Lt);
+
+      --------
+      -- Lt --
+      --------
+
+      function Lt (Op1, Op2 : Natural) return Boolean is
+         T1 : constant Xref_Entry := Xrefs.Table (Rnums (Nat (Op1)));
+         T2 : constant Xref_Entry := Xrefs.Table (Rnums (Nat (Op2)));
+
+      begin
+         --  First test: if entity is in different unit, sort by unit. Notice
+         --  that we use Ent_Scope_File rather than Eun, as Eun may refer to
+         --  the file where the generic scope is defined, and it may be
+         --  different from the file where the enclosing scope is defined. It
+         --  is the latter which matters for a correct order here.
+
+         if T1.Ent_Scope_File /= T2.Ent_Scope_File then
+            return Dependency_Num (T1.Ent_Scope_File) <
+              Dependency_Num (T2.Ent_Scope_File);
+
+         --  Second test: within same unit, sort by location of the scope of
+         --  the entity definition.
+
+         elsif Get_Scope_Num (T1.Ent_Scope) /=
+           Get_Scope_Num (T2.Ent_Scope)
+         then
+            return Get_Scope_Num (T1.Ent_Scope) < Get_Scope_Num (T2.Ent_Scope);
+
+         --  Third test: within same unit and scope, sort by location of
+         --  entity definition.
+
+         elsif T1.Def /= T2.Def then
+            return T1.Def < T2.Def;
+
+         --  Fourth test: if reference is in same unit as entity definition,
+         --  sort first.
+
+         elsif T1.Lun /= T2.Lun and then T1.Ent_Scope_File = T1.Lun then
+            return True;
+         elsif T1.Lun /= T2.Lun and then T2.Ent_Scope_File = T2.Lun then
+            return False;
+
+         --  Fifth test: if reference is in same unit and same scope as entity
+         --  definition, sort first.
+
+         elsif T1.Ent_Scope_File = T1.Lun
+           and then T1.Ref_Scope /= T2.Ref_Scope
+           and then T1.Ent_Scope = T1.Ref_Scope
+         then
+            return True;
+         elsif T1.Ent_Scope_File = T1.Lun
+           and then T1.Ref_Scope /= T2.Ref_Scope
+           and then T2.Ent_Scope = T2.Ref_Scope
+         then
+            return False;
+
+         --  Sixth test: for same entity, sort by reference location unit
+
+         elsif T1.Lun /= T2.Lun then
+            return Dependency_Num (T1.Lun) < Dependency_Num (T2.Lun);
+
+         --  Seventh test: for same entity, sort by reference location scope
+
+         elsif Get_Scope_Num (T1.Ref_Scope) /=
+           Get_Scope_Num (T2.Ref_Scope)
+         then
+            return Get_Scope_Num (T1.Ref_Scope) < Get_Scope_Num (T2.Ref_Scope);
+
+         --  Eighth test: order of location within referencing unit
+
+         elsif T1.Loc /= T2.Loc then
+            return T1.Loc < T2.Loc;
+
+         --  Finally, for two locations at the same address, we prefer the one
+         --  that does NOT have the type 'r' so that a modification or
+         --  extension takes preference, when there are more than one reference
+         --  at the same location. As a result, in the case of entities that
+         --  are in-out actuals, the read reference follows the modify
+         --  reference.
+
+         else
+            return T2.Typ = 'r';
+         end if;
+      end Lt;
+
+      ----------
+      -- Move --
+      ----------
+
+      procedure Move (From : Natural; To : Natural) is
+      begin
+         Rnums (Nat (To)) := Rnums (Nat (From));
+      end Move;
+
+      --  Start of processing for Add_ALFA_Xrefs
+   begin
+
+      for J in ALFA_Scope_Table.First .. ALFA_Scope_Table.Last loop
+         Set_Scope_Num (N   => ALFA_Scope_Table.Table (J).Scope_Entity,
+                        Num => ALFA_Scope_Table.Table (J).Scope_Num);
+      end loop;
+
+      --  Set up the pointer vector for the sort
+
+      for J in 1 .. Nrefs loop
+         Rnums (J) := J;
+      end loop;
+
+      --  Eliminate entries not appropriate for ALFA. Should be prior to
+      --  sorting cross-references, as it discards useless references which do
+      --  not have a proper format for the comparison function (like no
+      --  location).
+
+      Eliminate_Before_Sort : declare
+         NR : Nat;
+
+         function Is_ALFA_Scope (E : Entity_Id) return Boolean;
+         --  Return whether the entity or reference scope is adequate
+
+         -------------------
+         -- Is_ALFA_Scope --
+         -------------------
+
+         function Is_ALFA_Scope (E : Entity_Id) return Boolean is
+         begin
+            return Present (E)
+              and then not Is_Generic_Unit (E)
+              and then Renamed_Entity (E) = Empty
+              and then Get_Scope_Num (E) /= No_Scope;
+         end Is_ALFA_Scope;
+
+         --  Start of processing for Eliminate_Before_Sort
+      begin
+
+         NR    := Nrefs;
+         Nrefs := 0;
+
+         for J in 1 .. NR loop
+            if ALFA_Entities (Ekind (Xrefs.Table (Rnums (J)).Ent))
+              and then ALFA_References (Xrefs.Table (Rnums (J)).Typ)
+              and then Is_ALFA_Scope (Xrefs.Table (Rnums (J)).Ent_Scope)
+              and then Is_ALFA_Scope (Xrefs.Table (Rnums (J)).Ref_Scope)
+            then
+               Nrefs         := Nrefs + 1;
+               Rnums (Nrefs) := Rnums (J);
+            end if;
+         end loop;
+      end Eliminate_Before_Sort;
+
+      --  Sort the references
+
+      Sorting.Sort (Integer (Nrefs));
+
+      Eliminate_After_Sort : declare
+         NR    : Nat;
+
+         Crloc : Source_Ptr;
+         --  Current reference location
+
+         Prevt : Character;
+         --  reference kind of previous reference
+
+      begin
+         --  Eliminate duplicate entries
+
+         --  We need this test for NR because if we force ALI file generation
+         --  in case of errors detected, it may be the case that Nrefs is 0, so
+         --  we should not reset it here
+
+         if Nrefs >= 2 then
+            NR    := Nrefs;
+            Nrefs := 1;
+
+            for J in 2 .. NR loop
+               if Xrefs.Table (Rnums (J)) /=
+                 Xrefs.Table (Rnums (Nrefs))
+               then
+                  Nrefs := Nrefs + 1;
+                  Rnums (Nrefs) := Rnums (J);
+               end if;
+            end loop;
+         end if;
+
+         --  Eliminate the reference if it is at the same location as the
+         --  previous one, unless it is a read-reference that indicates that
+         --  the entity is an in-out actual in a call.
+
+         NR    := Nrefs;
+         Nrefs := 0;
+         Crloc := No_Location;
+         Prevt := 'm';
+
+         for J in 1 .. NR loop
+            if Xrefs.Table (Rnums (J)).Loc /= Crloc
+              or else (Prevt = 'm'
+                        and then Xrefs.Table (Rnums (J)).Typ = 'r')
+            then
+               Crloc         := Xrefs.Table (Rnums (J)).Loc;
+               Prevt         := Xrefs.Table (Rnums (J)).Typ;
+               Nrefs         := Nrefs + 1;
+               Rnums (Nrefs) := Rnums (J);
+            end if;
+         end loop;
+      end Eliminate_After_Sort;
+
+      --  Initialize loop
+
+      Prev_Scope_Idx := 1;
+      Cur_Scope_Idx  := 1;
+      From_Xref_Idx  := 1;
+      Cur_Entity     := Empty;
+
+      if ALFA_Scope_Table.Last /= 0 then
+         ALFA_Scope_Table.Table (1).From_Xref := 1;
+      end if;
+
+      --  Loop to output references
+
+      for Refno in 1 .. Nrefs loop
+         Add_One_Xref : declare
+
+            -----------------------
+            -- Local Subprograms --
+            -----------------------
+
+            function Cur_Scope return Node_Id;
+            --  Return the scope entity which corresponds to index
+            --  Cur_Scope_Idx in table ALFA_Scope_Table.
+
+            function Is_Future_Scope_Entity (E : Entity_Id) return Boolean;
+            --  Check whether entity E is in ALFA_Scope_Table at index
+            --  Cur_Scope_Idx or higher.
+
+            function Is_Past_Scope_Entity (E : Entity_Id) return Boolean;
+            --  Check whether entity E is in ALFA_Scope_Table at index strictly
+            --  lower than Cur_Scope_Idx.
+
+            ---------------
+            -- Cur_Scope --
+            ---------------
+
+            function Cur_Scope return Node_Id is
+            begin
+               return ALFA_Scope_Table.Table (Cur_Scope_Idx).Scope_Entity;
+            end Cur_Scope;
+
+            ----------------------------
+            -- Is_Future_Scope_Entity --
+            ----------------------------
+
+            function Is_Future_Scope_Entity (E : Entity_Id) return Boolean is
+            begin
+               for J in Cur_Scope_Idx .. ALFA_Scope_Table.Last loop
+                  if E = ALFA_Scope_Table.Table (J).Scope_Entity then
+                     return True;
+                  end if;
+               end loop;
+
+               --  If this assertion fails, this means that the scope which we
+               --  are looking for has been treated already, which reveals a
+               --  problem in the order of cross-references.
+
+               pragma Assert (not Is_Past_Scope_Entity (E));
+
+               return False;
+            end Is_Future_Scope_Entity;
+
+            --------------------------
+            -- Is_Past_Scope_Entity --
+            --------------------------
+
+            function Is_Past_Scope_Entity (E : Entity_Id) return Boolean is
+            begin
+               for J in ALFA_Scope_Table.First .. Cur_Scope_Idx - 1 loop
+                  if E = ALFA_Scope_Table.Table (J).Scope_Entity then
+                     return True;
+                  end if;
+               end loop;
+
+               return False;
+            end Is_Past_Scope_Entity;
+
+            ---------------------
+            -- Local Variables --
+            ---------------------
+
+            XE  : Xref_Entry renames Xrefs.Table (Rnums (Refno));
+
+         begin
+            --  If this assertion fails, this means that the scope which we
+            --  are looking for is not in ALFA scope table, which reveals
+            --  either a problem in the construction of the scope table, or an
+            --  erroneous scope for the current cross-reference.
+
+            pragma Assert (Is_Future_Scope_Entity (XE.Ent_Scope));
+
+            if XE.Ent_Scope /= Cur_Scope then
+               ALFA_Scope_Table.Table (Cur_Scope_Idx).From_Xref :=
+                 From_Xref_Idx;
+               From_Xref_Idx := ALFA_Xref_Table.Last + 1;
+            end if;
+
+            while XE.Ent_Scope /= Cur_Scope loop
+               Cur_Scope_Idx := Cur_Scope_Idx + 1;
+               pragma Assert (Cur_Scope_Idx <= ALFA_Scope_Table.Last);
+            end loop;
+
+            if Prev_Scope_Idx /= Cur_Scope_Idx
+              and then ALFA_Xref_Table.Last /= 0
+            then
+               ALFA_Scope_Table.Table (Prev_Scope_Idx).To_Xref :=
+                 ALFA_Xref_Table.Last;
+               Prev_Scope_Idx := Cur_Scope_Idx;
+            end if;
+
+            if XE.Ent /= Cur_Entity then
+               Cur_Entity_Name :=
+                 new String'(Exact_Source_Name (Sloc (XE.Ent)));
+            end if;
+
+            ALFA_Xref_Table.Append (
+              (Entity_Name => Cur_Entity_Name,
+               Entity_Line => Int (Get_Logical_Line_Number (XE.Def)),
+               Entity_Col  => Int (Get_Column_Number (XE.Def)),
+               File_Num    => Dependency_Num (XE.Lun),
+               Scope_Num   => Get_Scope_Num (XE.Ref_Scope),
+               Line        => Int (Get_Logical_Line_Number (XE.Loc)),
+               Rtype       => XE.Typ,
+               Col         => Int (Get_Column_Number (XE.Loc))));
+         end Add_One_Xref;
+      end loop;
+
+      ALFA_Scope_Table.Table (Cur_Scope_Idx).From_Xref := From_Xref_Idx;
+      ALFA_Scope_Table.Table (Cur_Scope_Idx).To_Xref   := ALFA_Xref_Table.Last;
+   end Add_ALFA_Xrefs;
+
+   ------------------
+   -- Collect_ALFA --
+   ------------------
+
+   procedure Collect_ALFA (Sdep_Table : Unit_Ref_Table; Num_Sdep : Nat) is
+   begin
+      --  Cross-references should have been computed first
+
+      pragma Assert (Xrefs.Last /= 0);
+
+      Initialize_ALFA_Tables;
+
+      --  Generate file and scope ALFA information
+
+      for D in 1 .. Num_Sdep loop
+
+         --  Ignore file for System
+
+         if Units.Table (Sdep_Table (D)).Source_Index /=
+           System_Source_File_Index
+         then
+            Add_ALFA_File (U => Sdep_Table (D), D => D);
+         end if;
+      end loop;
+
+      --  Generate cross reference ALFA information
+
+      Add_ALFA_Xrefs;
+   end Collect_ALFA;
+
+   -----------------------------------------
+   -- Traverse_Declarations_Or_Statements --
+   -----------------------------------------
+
+   procedure Traverse_Declarations_Or_Statements (L : List_Id) is
+      N : Node_Id;
+
+   begin
+      --  Loop through statements or declarations
+
+      N := First (L);
+      while Present (N) loop
+         case Nkind (N) is
+
+            --  Package declaration
+
+            when N_Package_Declaration =>
+               Traverse_Package_Declaration (N);
+
+            --  Generic package declaration ??? TBD
+
+            when N_Generic_Package_Declaration =>
+               null;
+
+            --  Package body
+
+            when N_Package_Body =>
+               if Ekind (Defining_Entity (N)) /= E_Generic_Package then
+                  Traverse_Package_Body (N);
+               end if;
+
+            --  Subprogram declaration
+
+            when N_Subprogram_Declaration =>
+               Add_ALFA_Scope (N);
+
+            --  Generic subprogram declaration ??? TBD
+
+            when N_Generic_Subprogram_Declaration =>
+               null;
+
+            --  Subprogram body
+
+            when N_Subprogram_Body =>
+               if not Is_Generic_Subprogram (Defining_Entity (N)) then
+                  Traverse_Subprogram_Body (N);
+               end if;
+
+            --  Block statement
+
+            when N_Block_Statement =>
+               Traverse_Declarations_Or_Statements (Declarations (N));
+               Traverse_Handled_Statement_Sequence
+                 (Handled_Statement_Sequence (N));
+
+            when N_If_Statement =>
+
+               --  Traverse the statements in the THEN part
+
+               Traverse_Declarations_Or_Statements (Then_Statements (N));
+
+               --  Loop through ELSIF parts if present
+
+               if Present (Elsif_Parts (N)) then
+                  declare
+                     Elif : Node_Id := First (Elsif_Parts (N));
+
+                  begin
+                     while Present (Elif) loop
+                        Traverse_Declarations_Or_Statements
+                          (Then_Statements (Elif));
+                        Next (Elif);
+                     end loop;
+                  end;
+               end if;
+
+               --  Finally traverse the ELSE statements if present
+
+               Traverse_Declarations_Or_Statements (Else_Statements (N));
+
+            --  Case statement
+
+            when N_Case_Statement =>
+
+               --  Process case branches
+
+               declare
+                  Alt : Node_Id;
+               begin
+                  Alt := First (Alternatives (N));
+                  while Present (Alt) loop
+                     Traverse_Declarations_Or_Statements (Statements (Alt));
+                     Next (Alt);
+                  end loop;
+               end;
+
+            --  Extended return statement
+
+            when N_Extended_Return_Statement =>
+               Traverse_Handled_Statement_Sequence
+                 (Handled_Statement_Sequence (N));
+
+            --  Loop
+
+            when N_Loop_Statement =>
+               Traverse_Declarations_Or_Statements (Statements (N));
+
+            when others =>
+               null;
+         end case;
+
+         Next (N);
+      end loop;
+   end Traverse_Declarations_Or_Statements;
+
+   -----------------------------------------
+   -- Traverse_Handled_Statement_Sequence --
+   -----------------------------------------
+
+   procedure Traverse_Handled_Statement_Sequence (N : Node_Id) is
+      Handler : Node_Id;
+
+   begin
+      if Present (N) then
+         Traverse_Declarations_Or_Statements (Statements (N));
+
+         if Present (Exception_Handlers (N)) then
+            Handler := First (Exception_Handlers (N));
+            while Present (Handler) loop
+               Traverse_Declarations_Or_Statements (Statements (Handler));
+               Next (Handler);
+            end loop;
+         end if;
+      end if;
+   end Traverse_Handled_Statement_Sequence;
+
+   ---------------------------
+   -- Traverse_Package_Body --
+   ---------------------------
+
+   procedure Traverse_Package_Body (N : Node_Id) is
+   begin
+      Add_ALFA_Scope (N);
+      Traverse_Declarations_Or_Statements (Declarations (N));
+      Traverse_Handled_Statement_Sequence (Handled_Statement_Sequence (N));
+   end Traverse_Package_Body;
+
+   ----------------------------------
+   -- Traverse_Package_Declaration --
+   ----------------------------------
+
+   procedure Traverse_Package_Declaration (N : Node_Id) is
+      Spec : constant Node_Id := Specification (N);
+   begin
+      Add_ALFA_Scope (N);
+      Traverse_Declarations_Or_Statements (Visible_Declarations (Spec));
+      Traverse_Declarations_Or_Statements (Private_Declarations (Spec));
+   end Traverse_Package_Declaration;
+
+   ------------------------------
+   -- Traverse_Subprogram_Body --
+   ------------------------------
+
+   procedure Traverse_Subprogram_Body (N : Node_Id) is
+   begin
+      Add_ALFA_Scope (N);
+      Traverse_Declarations_Or_Statements (Declarations (N));
+      Traverse_Handled_Statement_Sequence (Handled_Statement_Sequence (N));
+   end Traverse_Subprogram_Body;
+
+end ALFA;
Index: put_alfa.ads
===================================================================
--- put_alfa.ads	(revision 0)
+++ put_alfa.ads	(revision 0)
@@ -0,0 +1,58 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                             P U T _ A L F A                              --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--             Copyright (C) 2011, Free Software Foundation, Inc.           --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
+-- for  more details.  You should have  received  a copy of the GNU General --
+-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license.          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package contains the function used to read ALFA information from the
+--  internal tables defined in package ALFA, and output text information for
+--  the ALI file. The interface allows control over the destination of the
+--  output, so that this routine can also be used for debugging purposes.
+
+with Types; use Types;
+
+generic
+   --  The following procedures are used to output text information. The
+   --  destination of the text information is thus under control of the
+   --  particular instantiation. In particular, this procedure is used to
+   --  write output to the ALI file, and also for debugging output.
+
+   with function Write_Info_Col return Positive is <>;
+   --  Return the column in which the next character will be written
+
+   with procedure Write_Info_Char (C : Character) is <>;
+   --  Output one character
+
+   with procedure Write_Info_Initiate (Key : Character) is <>;
+   --  Initiate write of new line to output file, the parameter is the
+   --  keyword character for the line.
+
+   with procedure Write_Info_Nat (N : Nat) is <>;
+   --  Write image of N to output file with no leading or trailing blanks
+
+   with procedure Write_Info_Terminate is <>;
+   --  Terminate current info line and output lines built in Info_Buffer
+
+procedure Put_ALFA;
+--  Read information from ALFA tables (ALFA.ALFA_Xref_Table,
+--  ALFA.ALFA_Scope_Table and ALFA.ALFA_File_Table) and output corresponding
+--  information in ALI format using the Write_Info procedures.
Index: get_alfa.adb
===================================================================
--- get_alfa.adb	(revision 0)
+++ get_alfa.adb	(revision 0)
@@ -0,0 +1,460 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                             G E T _ A L F A                              --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--             Copyright (C) 2011, Free Software Foundation, Inc.           --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
+-- for  more details.  You should have  received  a copy of the GNU General --
+-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license.          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with ALFA;  use ALFA;
+with Types; use Types;
+
+with Ada.IO_Exceptions; use Ada.IO_Exceptions;
+
+procedure Get_ALFA is
+   C    : Character;
+
+   use ASCII;
+   --  For CR/LF
+
+   Cur_File : Nat;
+   --  Dependency number for the current file
+
+   Cur_Scope : Nat;
+   --  Scope number for the current scope entity
+
+   Cur_File_Idx : File_Index;
+   --  Index in ALFA_File_Table of the current file
+
+   Cur_Scope_Idx : Scope_Index;
+   --  Index in ALFA_Scope_Table of the current scope
+
+   Name_Str : String (1 .. 32768);
+   Name_Len : Natural := 0;
+   --  Local string used to store name of File/entity scanned as
+   --  Name_Str (1 .. Name_Len).
+
+   -----------------------
+   -- Local Subprograms --
+   -----------------------
+
+   function At_EOL return Boolean;
+   --  Skips any spaces, then checks if we are the end of a line. If so,
+   --  returns True (but does not skip over the EOL sequence). If not,
+   --  then returns False.
+
+   procedure Check (C : Character);
+   --  Checks that file is positioned at given character, and if so skips past
+   --  it, If not, raises Data_Error.
+
+   function Get_Nat return Nat;
+   --  On entry the file is positioned to a digit. On return, the file is
+   --  positioned past the last digit, and the returned result is the decimal
+   --  value read. Data_Error is raised for overflow (value greater than
+   --  Int'Last), or if the initial character is not a digit.
+
+   procedure Get_Name;
+   --  On entry the file is positioned to a name. On return, the file is
+   --  positioned past the last character, and the name scanned is returned in
+   --  Name_Str (1 .. Name_Len).
+
+   procedure Skip_EOL;
+   --  Called with the current character about to be read being LF or CR. Skips
+   --  past CR/LF characters until either a non-CR/LF character is found, or
+   --  the end of file is encountered.
+
+   procedure Skip_Spaces;
+   --  Skips zero or more spaces at the current position, leaving the file
+   --  positioned at the first non-blank character (or Types.EOF).
+
+   ------------
+   -- At_EOL --
+   ------------
+
+   function At_EOL return Boolean is
+   begin
+      Skip_Spaces;
+      return Nextc = CR or else Nextc = LF;
+   end At_EOL;
+
+   -----------
+   -- Check --
+   -----------
+
+   procedure Check (C : Character) is
+   begin
+      if Nextc = C then
+         Skipc;
+      else
+         raise Data_Error;
+      end if;
+   end Check;
+
+   -------------
+   -- Get_Nat --
+   -------------
+
+   function Get_Nat return Nat is
+      Val : Nat;
+      C   : Character;
+
+   begin
+      C := Nextc;
+      Val := 0;
+
+      if C not in '0' .. '9' then
+         raise Data_Error;
+      end if;
+
+      --  Loop to read digits of integer value
+
+      loop
+         declare
+            pragma Unsuppress (Overflow_Check);
+         begin
+            Val := Val * 10 + (Character'Pos (C) - Character'Pos ('0'));
+         end;
+
+         Skipc;
+         C := Nextc;
+
+         exit when C not in '0' .. '9';
+      end loop;
+
+      return Val;
+
+   exception
+      when Constraint_Error =>
+         raise Data_Error;
+   end Get_Nat;
+
+   --------------
+   -- Get_Name --
+   --------------
+
+   procedure Get_Name is
+      N : Integer;
+
+   begin
+      N := 0;
+      while Nextc > ' ' loop
+         N := N + 1;
+         Name_Str (N) := Getc;
+      end loop;
+
+      Name_Len := N;
+   end Get_Name;
+
+   --------------
+   -- Skip_EOL --
+   --------------
+
+   procedure Skip_EOL is
+      C : Character;
+
+   begin
+      loop
+         Skipc;
+         C := Nextc;
+         exit when C /= LF and then C /= CR;
+
+         if C = ' ' then
+            Skip_Spaces;
+            C := Nextc;
+            exit when C /= LF and then C /= CR;
+         end if;
+      end loop;
+   end Skip_EOL;
+
+   -----------------
+   -- Skip_Spaces --
+   -----------------
+
+   procedure Skip_Spaces is
+   begin
+      while Nextc = ' ' loop
+         Skipc;
+      end loop;
+   end Skip_Spaces;
+
+--  Start of processing for Get_ALFA
+
+begin
+   Initialize_ALFA_Tables;
+
+   Cur_File      := 0;
+   Cur_Scope     := 0;
+   Cur_File_Idx  := 1;
+   Cur_Scope_Idx := 0;
+
+   --  Loop through lines of ALFA information
+
+   while Nextc = 'F' loop
+      Skipc;
+
+      C := Getc;
+
+      --  Make sure first line is a File line
+
+      if ALFA_File_Table.Last = 0 and then C /= 'D' then
+         raise Data_Error;
+      end if;
+
+      --  Otherwise dispatch on type of line
+
+      case C is
+
+         --  Header entry for scope section
+
+         when 'D' =>
+
+            --  Complete previous entry if any
+
+            if ALFA_File_Table.Last /= 0 then
+               ALFA_File_Table.Table (ALFA_File_Table.Last).To_Scope :=
+                 ALFA_Scope_Table.Last;
+            end if;
+
+            --  Scan out dependency number and file name
+
+            Skip_Spaces;
+            Cur_File := Get_Nat;
+            Skip_Spaces;
+            Get_Name;
+
+            --  Make new File table entry (will fill in To_Scope later)
+
+            ALFA_File_Table.Append (
+              (File_Name  => new String'(Name_Str (1 .. Name_Len)),
+               File_Num   => Cur_File,
+               From_Scope => ALFA_Scope_Table.Last + 1,
+               To_Scope   => 0));
+
+            --  Initialize counter for scopes
+
+            Cur_Scope := 1;
+
+         --  Scope entry
+
+         when 'S' =>
+            declare
+               Scope : Nat;
+               Line  : Nat;
+               Col   : Nat;
+               Typ   : Character;
+
+            begin
+               --  Scan out location
+
+               Skip_Spaces;
+               Check ('.');
+               Scope := Get_Nat;
+               Check (' ');
+               Line  := Get_Nat;
+               Typ   := Getc;
+               Col   := Get_Nat;
+
+               pragma Assert (Scope = Cur_Scope);
+               pragma Assert         (Typ = 'K'
+                              or else Typ = 'V'
+                              or else Typ = 'U');
+
+               --  Scan out scope entity name
+
+               Skip_Spaces;
+               Get_Name;
+
+               --  Make new scope table entry (will fill in From_Xref and
+               --  To_Xref later). Initial range (From_Xref .. To_Xref) is
+               --  empty for scopes without entities.
+
+               ALFA_Scope_Table.Append (
+                 (Scope_Entity => Empty,
+                  Scope_Name   => new String'(Name_Str (1 .. Name_Len)),
+                  File_Num     => Cur_File,
+                  Scope_Num    => Cur_Scope,
+                  Line         => Line,
+                  Stype        => Typ,
+                  Col          => Col,
+                  From_Xref    => 1,
+                  To_Xref      => 0));
+            end;
+
+            --  Update counter for scopes
+
+            Cur_Scope := Cur_Scope + 1;
+
+         --  Header entry for cross-ref section
+
+         when 'X' =>
+
+            --  Scan out dependency number and file name (ignored)
+
+            Skip_Spaces;
+            Cur_File := Get_Nat;
+            Skip_Spaces;
+            Get_Name;
+
+            --  Update component From_Xref of current file if first reference
+            --  in this file.
+
+            while ALFA_File_Table.Table (Cur_File_Idx).File_Num /= Cur_File
+            loop
+               Cur_File_Idx := Cur_File_Idx + 1;
+            end loop;
+
+            --  Scan out scope entity number and entity name (ignored)
+
+            Skip_Spaces;
+            Check ('.');
+            Cur_Scope := Get_Nat;
+            Skip_Spaces;
+            Get_Name;
+
+            --  Update component To_Xref of previous scope
+
+            if Cur_Scope_Idx /= 0 then
+               ALFA_Scope_Table.Table (Cur_Scope_Idx).To_Xref :=
+                 ALFA_Xref_Table.Last;
+            end if;
+
+            --  Update component From_Xref of current scope
+
+            Cur_Scope_Idx := ALFA_File_Table.Table (Cur_File_Idx).From_Scope;
+
+            while ALFA_Scope_Table.Table (Cur_Scope_Idx).Scope_Num /= Cur_Scope
+            loop
+               Cur_Scope_Idx := Cur_Scope_Idx + 1;
+            end loop;
+
+            ALFA_Scope_Table.Table (Cur_Scope_Idx).From_Xref :=
+              ALFA_Xref_Table.Last + 1;
+
+         --  Cross reference entry
+
+         when ' ' =>
+            declare
+               XR_Entity      : String_Ptr;
+               XR_Entity_Line : Nat;
+               XR_Entity_Col  : Nat;
+
+               XR_File        : Nat;
+               --  Keeps track of the current file (changed by nn|)
+
+               XR_Scope       : Nat;
+               --  Keeps track of the current scope (changed by nn:)
+
+            begin
+               XR_File  := Cur_File;
+               XR_Scope := Cur_Scope;
+
+               XR_Entity_Line := Get_Nat;
+               Check (' ');
+               XR_Entity_Col  := Get_Nat;
+
+               Skip_Spaces;
+               Get_Name;
+               XR_Entity := new String'(Name_Str (1 .. Name_Len));
+
+               --  Initialize to scan items on one line
+
+               Skip_Spaces;
+
+               --  Loop through cross-references for this entity
+
+               loop
+
+                  declare
+                     Line  : Nat;
+                     Col   : Nat;
+                     N     : Nat;
+                     Rtype : Character;
+
+                  begin
+                     Skip_Spaces;
+
+                     if At_EOL then
+                        Skip_EOL;
+                        exit when Nextc /= '.';
+                        Skipc;
+                     end if;
+
+                     if Nextc = '.' then
+                        Skipc;
+                        XR_Scope := Get_Nat;
+                        Check (':');
+
+                     else
+                        N := Get_Nat;
+
+                        if Nextc = '|' then
+                           XR_File := N;
+                           Skipc;
+
+                        else
+                           Line  := N;
+                           Rtype := Getc;
+                           Col   := Get_Nat;
+
+                           pragma Assert         (Rtype = 'r'
+                                          or else Rtype = 'm'
+                                          or else Rtype = 's');
+
+                           ALFA_Xref_Table.Append (
+                             (Entity_Name => XR_Entity,
+                              Entity_Line => XR_Entity_Line,
+                              Entity_Col  => XR_Entity_Col,
+                              File_Num    => XR_File,
+                              Scope_Num   => XR_Scope,
+                              Line        => Line,
+                              Rtype       => Rtype,
+                              Col         => Col));
+                        end if;
+                     end if;
+                  end;
+               end loop;
+            end;
+
+         --  No other ALFA lines are possible
+
+         when others =>
+            raise Data_Error;
+      end case;
+
+      --  For cross reference lines, the end-of-line character has been skipped
+      --  already.
+
+      if C /= ' ' then
+         Skip_EOL;
+      end if;
+   end loop;
+
+   --  Here with all Xrefs stored, complete last entries in File and Scope
+   --  tables.
+
+   if ALFA_File_Table.Last /= 0 then
+      ALFA_File_Table.Table (ALFA_File_Table.Last).To_Scope :=
+        ALFA_Scope_Table.Last;
+   end if;
+
+   if Cur_Scope_Idx /= 0 then
+      ALFA_Scope_Table.Table (Cur_Scope_Idx).To_Xref := ALFA_Xref_Table.Last;
+   end if;
+end Get_ALFA;
Index: lib-xref.adb
===================================================================
--- lib-xref.adb	(revision 177169)
+++ lib-xref.adb	(working copy)
@@ -27,7 +27,6 @@
 with Csets;    use Csets;
 with Elists;   use Elists;
 with Errout;   use Errout;
-with Lib.Util; use Lib.Util;
 with Nlists;   use Nlists;
 with Opt;      use Opt;
 with Restrict; use Restrict;
@@ -43,7 +42,6 @@
 with Stringt;  use Stringt;
 with Stand;    use Stand;
 with Table;    use Table;
-with Widechar; use Widechar;
 
 with GNAT.Heap_Sort_G;
 
@@ -62,9 +60,6 @@
       Ent : Entity_Id;
       --  Entity referenced (E parameter to Generate_Reference)
 
-      Sub : Entity_Id;
-      --  Entity of the closest enclosing subprogram or package
-
       Def : Source_Ptr;
       --  Original source location for entity being referenced. Note that these
       --  values are used only during the output process, they are not set when
@@ -76,22 +71,27 @@
       --  to Generate_Reference). Set to No_Location for the case of a
       --  defining occurrence.
 
-      Slc : Source_Ptr;
-      --  Original source location for entity Sub
-
       Typ : Character;
       --  Reference type (Typ param to Generate_Reference)
 
       Eun : Unit_Number_Type;
       --  Unit number corresponding to Ent
 
-      Sun : Unit_Number_Type;
-      --  Unit number corresponding to Sub
-
       Lun : Unit_Number_Type;
       --  Unit number corresponding to Loc. Value is undefined and not
       --  referenced if Loc is set to No_Location.
 
+      --  The following components are only used for ALFA cross-references
+
+      Ref_Scope : Entity_Id;
+      --  Entity of the closest subprogram or package enclosing the reference
+
+      Ent_Scope : Entity_Id;
+      --  Entity of the closest subprogram or package enclosing the definition,
+      --  which should be located in the same file as the definition itself.
+
+      Ent_Scope_File : Unit_Number_Type;
+      --  File for entity Ent_Scope
    end record;
 
    package Xrefs is new Table.Table (
@@ -102,6 +102,12 @@
      Table_Increment      => Alloc.Xrefs_Increment,
      Table_Name           => "Xrefs");
 
+   ----------------------
+   -- ALFA Information --
+   ----------------------
+
+   package body ALFA is separate;
+
    ------------------------
    --  Local Subprograms --
    ------------------------
@@ -109,9 +115,6 @@
    function Enclosing_Subprogram_Or_Package (N : Node_Id) return Entity_Id;
    --  Return the closest enclosing subprogram of package
 
-   function Is_Local_Reference_Type (Typ : Character) return Boolean;
-   --  Return whether Typ is a suitable reference type for a local reference
-
    procedure Generate_Prim_Op_References (Typ : Entity_Id);
    --  For a tagged type, generate implicit references to its primitive
    --  operations, for source navigation. This is done right before emitting
@@ -121,20 +124,25 @@
    function Lt (T1, T2 : Xref_Entry) return Boolean;
    --  Order cross-references
 
-   procedure Write_Entity_Name (E : Entity_Id; Cursrc : Source_Buffer_Ptr);
-   --  Output entity name for E. We use the occurrence from the actual
-   --  source program at the definition point.
-
    -------------------------------------
    -- Enclosing_Subprogram_Or_Package --
    -------------------------------------
 
-   function Enclosing_Subprogram_Or_Package (N : Node_Id) return Entity_Id
-   is
-      Result : Entity_Id;
+   function Enclosing_Subprogram_Or_Package (N : Node_Id) return Entity_Id is
+      Result         : Entity_Id;
 
    begin
-      Result := N;
+      --  If N is the defining identifier for a subprogram, then return the
+      --  enclosing subprogram or package, not this subprogram.
+
+      if Nkind_In (N, N_Defining_Identifier, N_Defining_Operator_Symbol)
+        and then Nkind (Parent (N)) in N_Subprogram_Specification
+      then
+         Result := Parent (Parent (Parent (N)));
+      else
+         Result := N;
+      end if;
+
       loop
          exit when No (Result);
 
@@ -144,7 +152,7 @@
                exit;
 
             when N_Package_Body =>
-               Result := Corresponding_Spec (Result);
+               Result := Defining_Unit_Name (Result);
                exit;
 
             when N_Subprogram_Specification =>
@@ -168,6 +176,14 @@
          Result := Defining_Identifier (Result);
       end if;
 
+      --  Do no return a scope without a proper location
+
+      if Present (Result)
+        and then Sloc (Result) = No_Location
+      then
+         return Empty;
+      end if;
+
       return Result;
    end Enclosing_Subprogram_Or_Package;
 
@@ -214,39 +230,16 @@
          Loc  := Original_Location (Sloc (E));
 
          Xrefs.Table (Indx).Ent := E;
+         Xrefs.Table (Indx).Typ := ' ';
+         Xrefs.Table (Indx).Def := No_Location;
+         Xrefs.Table (Indx).Loc := No_Location;
 
-         if ALFA_Mode
-           and then Nkind_In (Parent (E),
-                              N_Object_Declaration,
-                              N_Parameter_Specification)
-         then
-            --  In ALFA mode, define precise 'D' references for object
-            --  definition.
+         Xrefs.Table (Indx).Eun := Get_Source_Unit (Loc);
 
-            declare
-               Sub : constant Entity_Id := Enclosing_Subprogram_Or_Package (E);
-               Slc : constant Source_Ptr := Original_Location (Sloc (Sub));
-               Sun : constant Unit_Number_Type := Get_Source_Unit (Slc);
-            begin
-               Xrefs.Table (Indx).Typ := 'D';
-               Xrefs.Table (Indx).Sub := Sub;
-               Xrefs.Table (Indx).Def := Loc;
-               Xrefs.Table (Indx).Loc := Loc;
-               Xrefs.Table (Indx).Slc := Slc;
-               Xrefs.Table (Indx).Lun := Get_Source_Unit (Loc);
-               Xrefs.Table (Indx).Sun := Sun;
-            end;
-         else
-            Xrefs.Table (Indx).Typ := ' ';
-            Xrefs.Table (Indx).Sub := Empty;
-            Xrefs.Table (Indx).Def := No_Location;
-            Xrefs.Table (Indx).Loc := No_Location;
-            Xrefs.Table (Indx).Slc := No_Location;
-            Xrefs.Table (Indx).Lun := No_Unit;
-            Xrefs.Table (Indx).Sun := No_Unit;
-         end if;
+         Xrefs.Table (Indx).Ref_Scope      := Empty;
+         Xrefs.Table (Indx).Ent_Scope      := Empty;
+         Xrefs.Table (Indx).Ent_Scope_File := No_Unit;
 
-         Xrefs.Table (Indx).Eun := Get_Source_Unit (Loc);
          Set_Has_Xref_Entry (E);
 
          if In_Inlined_Body then
@@ -371,10 +364,11 @@
       Nod  : Node_Id;
       Ref  : Source_Ptr;
       Def  : Source_Ptr;
-      Slc  : Source_Ptr;
       Ent  : Entity_Id;
-      Sub  : Entity_Id;
 
+      Ref_Scope     : Entity_Id;
+      Ent_Scope     : Entity_Id;
+
       Call   : Node_Id;
       Formal : Entity_Id;
       --  Used for call to Find_Actual
@@ -934,17 +928,16 @@
 
          --  Record reference to entity
 
-         Sub := Enclosing_Subprogram_Or_Package (N);
-
          Ref := Original_Location (Sloc (Nod));
          Def := Original_Location (Sloc (Ent));
-         Slc := Original_Location (Sloc (Sub));
 
+         Ref_Scope := Enclosing_Subprogram_Or_Package (N);
+         Ent_Scope := Enclosing_Subprogram_Or_Package (Ent);
+
          Xrefs.Increment_Last;
          Indx := Xrefs.Last;
 
          Xrefs.Table (Indx).Loc := Ref;
-         Xrefs.Table (Indx).Slc := Slc;
 
          --  Overriding operations are marked with 'P'
 
@@ -959,9 +952,12 @@
 
          Xrefs.Table (Indx).Eun := Get_Source_Unit (Def);
          Xrefs.Table (Indx).Lun := Get_Source_Unit (Ref);
-         Xrefs.Table (Indx).Sun := Get_Source_Unit (Slc);
          Xrefs.Table (Indx).Ent := Ent;
-         Xrefs.Table (Indx).Sub := Sub;
+
+         Xrefs.Table (Indx).Ref_Scope      := Ref_Scope;
+         Xrefs.Table (Indx).Ent_Scope      := Ent_Scope;
+         Xrefs.Table (Indx).Ent_Scope_File := Get_Source_Unit (Ent_Scope);
+
          Set_Has_Xref_Entry (Ent);
       end if;
    end Generate_Reference;
@@ -1036,19 +1032,6 @@
       Xrefs.Init;
    end Initialize;
 
-   -----------------------------
-   -- Is_Local_Reference_Type --
-   -----------------------------
-
-   function Is_Local_Reference_Type (Typ : Character) return Boolean is
-   begin
-      return Typ = 'r' or else
-             Typ = 'm' or else
-             Typ = 's' or else
-             Typ = 'I' or else
-             Typ = 'D';
-   end Is_Local_Reference_Type;
-
    --------
    -- Lt --
    --------
@@ -1320,10 +1303,6 @@
    --  Start of processing for Output_References
 
    begin
-      if not Opt.Xref_Active then
-         return;
-      end if;
-
       --  First we add references to the primitive operations of tagged types
       --  declared in the main unit.
 
@@ -1522,9 +1501,6 @@
          Curru : Unit_Number_Type;
          --  Current reference unit for one entity
 
-         Cursrc : Source_Buffer_Ptr;
-         --  Current xref unit source text
-
          Curent : Entity_Id;
          --  Current entity
 
@@ -1657,20 +1633,11 @@
 
          for Refno in 1 .. Nrefs loop
             Output_One_Ref : declare
-               P2  : Source_Ptr;
                Ent : Entity_Id;
 
-               WC  : Char_Code;
-               Err : Boolean;
-               pragma Warnings (Off, WC);
-               pragma Warnings (Off, Err);
-
                XE : Xref_Entry renames Xrefs.Table (Rnums (Refno));
                --  The current entry to be accessed
 
-               P : Source_Ptr;
-               --  Used to index into source buffer to get entity name
-
                Left  : Character;
                Right : Character;
                --  Used for {} or <> or () for type reference
@@ -2015,7 +1982,6 @@
                      end if;
 
                      Curxu := XE.Eun;
-                     Cursrc := Source_Text (Source_Index (Curxu));
 
                      Write_Info_Initiate ('X');
                      Write_Info_Char (' ');
@@ -2149,52 +2115,15 @@
                      --  Output entity name. We use the occurrence from the
                      --  actual source program at the definition point.
 
-                     P := Original_Location (Sloc (XE.Ent));
-
-                     --  Entity is character literal
-
-                     if Cursrc (P) = ''' then
-                        Write_Info_Char (Cursrc (P));
-                        Write_Info_Char (Cursrc (P + 1));
-                        Write_Info_Char (Cursrc (P + 2));
-
-                     --  Entity is operator symbol
-
-                     elsif Cursrc (P) = '"' or else Cursrc (P) = '%' then
-                        Write_Info_Char (Cursrc (P));
-
-                        P2 := P;
-                        loop
-                           P2 := P2 + 1;
-                           Write_Info_Char (Cursrc (P2));
-                           exit when Cursrc (P2) = Cursrc (P);
+                     declare
+                        Ent_Name : constant String :=
+                                     Exact_Source_Name (Sloc (XE.Ent));
+                     begin
+                        for C in Ent_Name'Range loop
+                           Write_Info_Char (Ent_Name (C));
                         end loop;
+                     end;
 
-                     --  Entity is identifier
-
-                     else
-                        loop
-                           if Is_Start_Of_Wide_Char (Cursrc, P) then
-                              Scan_Wide (Cursrc, P, WC, Err);
-                           elsif not Identifier_Char (Cursrc (P)) then
-                              exit;
-                           else
-                              P := P + 1;
-                           end if;
-                        end loop;
-
-                        --  Write out the identifier by copying the exact
-                        --  source characters used in its declaration. Note
-                        --  that this means wide characters will be in their
-                        --  original encoded form.
-
-                        for J in
-                          Original_Location (Sloc (XE.Ent)) .. P - 1
-                        loop
-                           Write_Info_Char (Cursrc (J));
-                        end loop;
-                     end if;
-
                      --  See if we have a renaming reference
 
                      if Is_Object (XE.Ent)
@@ -2391,430 +2320,4 @@
       end Output_Refs;
    end Output_References;
 
-   -----------------------------
-   -- Output_Local_References --
-   -----------------------------
-
-   procedure Output_Local_References is
-
-      Nrefs : Nat := Xrefs.Last;
-      --  Number of references in table. This value may get reset (reduced)
-      --  when we eliminate duplicate reference entries as well as references
-      --  not suitable for local cross-references.
-
-      Rnums : array (0 .. Nrefs) of Nat;
-      --  This array contains numbers of references in the Xrefs table. This
-      --  list is sorted in output order. The extra 0'th entry is convenient
-      --  for the call to sort. When we sort the table, we move the entries in
-      --  Rnums around, but we do not move the original table entries.
-
-      Curxu : Unit_Number_Type;
-      --  Current xref unit
-
-      Curru : Unit_Number_Type;
-      --  Current reference unit for one entity
-
-      Cursu : Unit_Number_Type;
-      --  Current reference unit for one enclosing subprogram
-
-      Cursrc : Source_Buffer_Ptr;
-      --  Current xref unit source text
-
-      Cursub : Entity_Id;
-      --  Current enclosing subprogram
-
-      Curent : Entity_Id;
-      --  Current entity
-
-      Curnam : String (1 .. Name_Buffer'Length);
-      Curlen : Natural;
-      --  Simple name and length of current entity
-
-      Curdef : Source_Ptr;
-      --  Original source location for current entity
-
-      Crloc : Source_Ptr;
-      --  Current reference location
-
-      Ctyp  : Character;
-      --  Entity type character
-
-      Prevt : Character;
-      --  Reference kind of previous reference
-
-      function Lt (Op1, Op2 : Natural) return Boolean;
-      --  Comparison function for Sort call
-
-      function Name_Change (X : Entity_Id) return Boolean;
-      --  Determines if entity X has a different simple name from Curent
-
-      procedure Move (From : Natural; To : Natural);
-      --  Move procedure for Sort call
-
-      package Sorting is new GNAT.Heap_Sort_G (Move, Lt);
-
-      --------
-      -- Lt --
-      --------
-
-      function Lt (Op1, Op2 : Natural) return Boolean is
-         T1 : Xref_Entry renames Xrefs.Table (Rnums (Nat (Op1)));
-         T2 : Xref_Entry renames Xrefs.Table (Rnums (Nat (Op2)));
-
-      begin
-         if T1.Slc = No_Location then
-            return True;
-
-         elsif T2.Slc = No_Location then
-            return False;
-
-         elsif T1.Sun /= T2.Sun then
-            return Dependency_Num (T1.Sun) < Dependency_Num (T2.Sun);
-
-         elsif T1.Slc /= T2.Slc then
-            return T1.Slc < T2.Slc;
-
-         else
-            return Lt (T1, T2);
-         end if;
-      end Lt;
-
-      ----------
-      -- Move --
-      ----------
-
-      procedure Move (From : Natural; To : Natural) is
-      begin
-         Rnums (Nat (To)) := Rnums (Nat (From));
-      end Move;
-
-      -----------------
-      -- Name_Change --
-      -----------------
-
-      --  Why a string comparison here??? Why not compare Name_Id values???
-
-      function Name_Change (X : Entity_Id) return Boolean is
-      begin
-         Get_Unqualified_Name_String (Chars (X));
-
-         if Name_Len /= Curlen then
-            return True;
-         else
-            return Name_Buffer (1 .. Curlen) /= Curnam (1 .. Curlen);
-         end if;
-      end Name_Change;
-
-      --  Start of processing for Output_Subprogram_References
-   begin
-
-      --  Replace enclosing subprogram pointer by corresponding specification
-      --  when appropriate. This could not be done before as the information
-      --  was not always available when registering references.
-
-      for J in 1 .. Xrefs.Last loop
-         if Present (Xrefs.Table (J).Sub) then
-            declare
-               N   : constant Node_Id :=
-                       Parent (Parent (Xrefs.Table (J).Sub));
-               Sub : Entity_Id;
-               Slc : Source_Ptr;
-               Sun : Unit_Number_Type;
-            begin
-               if Nkind (N) = N_Subprogram_Body
-                 and then not Acts_As_Spec (N)
-               then
-                  Sub := Corresponding_Spec (N);
-
-                  if Nkind (Sub) = N_Defining_Program_Unit_Name then
-                     Sub := Defining_Identifier (Sub);
-                  end if;
-
-                  Slc := Original_Location (Sloc (Sub));
-                  Sun := Get_Source_Unit (Slc);
-
-                  Xrefs.Table (J).Sub := Sub;
-                  Xrefs.Table (J).Slc := Slc;
-                  Xrefs.Table (J).Sun := Sun;
-               end if;
-            end;
-         end if;
-      end loop;
-
-      --  Set up the pointer vector for the sort
-
-      for J in 1 .. Nrefs loop
-         Rnums (J) := J;
-      end loop;
-
-      --  Sort the references
-
-      Sorting.Sort (Integer (Nrefs));
-
-      declare
-         NR : Nat;
-
-      begin
-         --  Eliminate duplicate entries
-
-         --  We need this test for NR because if we force ALI file generation
-         --  in case of errors detected, it may be the case that Nrefs is zero,
-         --  so we should not reset it here.
-
-         if Nrefs >= 2 then
-            NR    := Nrefs;
-            Nrefs := 1;
-
-            for J in 2 .. NR loop
-               if Xrefs.Table (Rnums (J)) /= Xrefs.Table (Rnums (Nrefs)) then
-                  Nrefs         := Nrefs + 1;
-                  Rnums (Nrefs) := Rnums (J);
-               end if;
-            end loop;
-         end if;
-
-         --  Eliminate entries not appropriate for local references
-
-         NR    := Nrefs;
-         Nrefs := 0;
-
-         for J in 1 .. NR loop
-            if Lref_Entity_Status (Ekind (Xrefs.Table (Rnums (J)).Ent))
-              and then Is_Local_Reference_Type (Xrefs.Table (Rnums (J)).Typ)
-            then
-               Nrefs         := Nrefs + 1;
-               Rnums (Nrefs) := Rnums (J);
-            end if;
-         end loop;
-      end;
-
-      --  Initialize loop through references
-
-      Curxu  := No_Unit;
-      Cursub := Empty;
-      Curent := Empty;
-      Curdef := No_Location;
-      Curru  := No_Unit;
-      Cursu  := No_Unit;
-      Crloc  := No_Location;
-      Prevt  := 'm';
-
-      --  Loop to output references
-
-      for Refno in 1 .. Nrefs loop
-         Output_One_Ref : declare
-            Ent : Entity_Id;
-
-            XE  : Xref_Entry renames Xrefs.Table (Rnums (Refno));
-            --  The current entry to be accessed
-
-         begin
-            Ent  := XE.Ent;
-            Ctyp := Xref_Entity_Letters (Ekind (Ent));
-
-            --  Start new Unit section if subprogram in new unit
-
-            if XE.Sun /= Cursu then
-               if Write_Info_Col > 1 then
-                  Write_Info_EOL;
-               end if;
-
-               Cursu := XE.Sun;
-
-               Write_Info_Initiate ('F');
-               Write_Info_Char (' ');
-               Write_Info_Nat (Dependency_Num (XE.Sun));
-               Write_Info_Char (' ');
-               Write_Info_Name (Reference_Name (Source_Index (XE.Sun)));
-               Write_Info_EOL;
-            end if;
-
-            --  Start new Subprogram section if new subprogram
-
-            if XE.Sub /= Cursub then
-               if Write_Info_Col > 1 then
-                  Write_Info_EOL;
-               end if;
-
-               Cursub := XE.Sub;
-               Cursrc := Source_Text (Source_Index (Cursu));
-
-               Write_Info_Initiate ('S');
-               Write_Info_Char (' ');
-               Write_Info_Nat (Int (Get_Logical_Line_Number (XE.Slc)));
-               Write_Info_Char (Xref_Entity_Letters (Ekind (XE.Sub)));
-               Write_Info_Nat (Int (Get_Column_Number (XE.Slc)));
-               Write_Info_Char (' ');
-               Write_Entity_Name (XE.Sub, Cursrc);
-
-               --  Indicate that the entity is in the unit of the current local
-               --  xref section.
-
-               Curru := Cursu;
-
-               --  End of processing for subprogram output
-
-               Curxu  := No_Unit;
-               Curent := Empty;
-            end if;
-
-            --  Start new Xref section if new xref unit
-
-            if XE.Eun /= Curxu then
-               if Write_Info_Col > 1 then
-                  Write_Info_EOL;
-               end if;
-
-               Curxu  := XE.Eun;
-               Cursrc := Source_Text (Source_Index (Curxu));
-
-               Write_Info_Initiate ('X');
-               Write_Info_Char (' ');
-               Write_Info_Nat (Dependency_Num (XE.Eun));
-               Write_Info_Char (' ');
-               Write_Info_Name (Reference_Name (Source_Index (XE.Eun)));
-
-               --  End of processing for Xref section output
-
-               Curru := Cursu;
-            end if;
-
-            --  Start new Entity line if new entity. Note that we consider two
-            --  entities the same if they have the same name and source
-            --  location. This causes entities in instantiations to be treated
-            --  as though they referred to the template.
-
-            if No (Curent)
-              or else
-                (XE.Ent /= Curent
-                  and then (Name_Change (XE.Ent) or else XE.Def /= Curdef))
-            then
-               Curent := XE.Ent;
-               Curdef := XE.Def;
-
-               Get_Unqualified_Name_String (Chars (XE.Ent));
-               Curlen := Name_Len;
-               Curnam (1 .. Curlen) := Name_Buffer (1 .. Curlen);
-
-               if Write_Info_Col > 1 then
-                  Write_Info_EOL;
-               end if;
-
-               --  Write line and column number information
-
-               Write_Info_Nat  (Int (Get_Logical_Line_Number (XE.Def)));
-               Write_Info_Char (Ctyp);
-               Write_Info_Nat  (Int (Get_Column_Number (XE.Def)));
-               Write_Info_Char (' ');
-
-               --  Output entity name
-
-               Write_Entity_Name (XE.Ent, Cursrc);
-
-               --  End of processing for entity output
-
-               Crloc := No_Location;
-            end if;
-
-            --  Output the reference if it is not as the same location as the
-            --  previous one, or it is a read-reference that indicates that the
-            --  entity is an in-out actual in a call.
-
-            if XE.Loc /= No_Location
-              and then
-                (XE.Loc /= Crloc
-                  or else (Prevt = 'm' and then XE.Typ = 'r'))
-            then
-               Crloc := XE.Loc;
-               Prevt := XE.Typ;
-
-               --  Start continuation if line full, else blank
-
-               if Write_Info_Col > 72 then
-                  Write_Info_EOL;
-                  Write_Info_Initiate ('.');
-               end if;
-
-               Write_Info_Char (' ');
-
-               --  Output file number if changed
-
-               if XE.Lun /= Curru then
-                  Curru := XE.Lun;
-                  Write_Info_Nat (Dependency_Num (Curru));
-                  Write_Info_Char ('|');
-               end if;
-
-               --  Write line and column number information
-
-               Write_Info_Nat  (Int (Get_Logical_Line_Number (XE.Loc)));
-               Write_Info_Char (XE.Typ);
-               Write_Info_Nat  (Int (Get_Column_Number (XE.Loc)));
-            end if;
-         end Output_One_Ref;
-      end loop;
-
-      Write_Info_EOL;
-   end Output_Local_References;
-
-   -----------------------
-   -- Write_Entity_Name --
-   -----------------------
-
-   procedure Write_Entity_Name (E : Entity_Id; Cursrc : Source_Buffer_Ptr) is
-      P, P2 : Source_Ptr;
-      --  Used to index into source buffer to get entity name
-
-      WC    : Char_Code;
-      Err   : Boolean;
-      pragma Warnings (Off, WC);
-      pragma Warnings (Off, Err);
-
-   begin
-      P := Original_Location (Sloc (E));
-
-      --  Entity is character literal
-
-      if Cursrc (P) = ''' then
-         Write_Info_Char (Cursrc (P));
-         Write_Info_Char (Cursrc (P + 1));
-         Write_Info_Char (Cursrc (P + 2));
-
-         --  Entity is operator symbol
-
-      elsif Cursrc (P) = '"' or else Cursrc (P) = '%' then
-         Write_Info_Char (Cursrc (P));
-
-         P2 := P;
-         loop
-            P2 := P2 + 1;
-            Write_Info_Char (Cursrc (P2));
-            exit when Cursrc (P2) = Cursrc (P);
-         end loop;
-
-         --  Entity is identifier
-
-      else
-         loop
-            if Is_Start_Of_Wide_Char (Cursrc, P) then
-               Scan_Wide (Cursrc, P, WC, Err);
-            elsif not Identifier_Char (Cursrc (P)) then
-               exit;
-            else
-               P := P + 1;
-            end if;
-         end loop;
-
-         --  Write out the identifier by copying the exact source characters
-         --  used in its declaration. Note that this means wide characters will
-         --  be in their original encoded form.
-
-         for J in
-           Original_Location (Sloc (E)) .. P - 1
-         loop
-            Write_Info_Char (Cursrc (J));
-         end loop;
-      end if;
-   end Write_Entity_Name;
-
 end Lib.Xref;
Index: get_alfa.ads
===================================================================
--- get_alfa.ads	(revision 0)
+++ get_alfa.ads	(revision 0)
@@ -0,0 +1,58 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                             G E T _ A L F A                              --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--             Copyright (C) 2011, Free Software Foundation, Inc.           --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
+-- for  more details.  You should have  received  a copy of the GNU General --
+-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license.          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package contains the function used to read ALFA information from an
+--  ALI file and populate the tables defined in package ALFA with the result.
+
+generic
+   --  These subprograms provide access to the ALI file. Locating, opening and
+   --  providing access to the ALI file is the callers' responsibility.
+
+   with function Getc return Character is <>;
+   --  Get next character, positioning the ALI file ready to read the following
+   --  character (equivalent to calling Nextc, then Skipc). If the end of file
+   --  is encountered, the value Types.EOF is returned.
+
+   with function Nextc return Character is <>;
+   --  Look at the next character, and return it, leaving the position of the
+   --  file unchanged, so that a subsequent call to Getc or Nextc will return
+   --  this same character. If the file is positioned at the end of file, then
+   --  Types.EOF is returned.
+
+   with procedure Skipc is <>;
+   --  Skip past the current character (which typically was read with Nextc),
+   --  and position to the next character, which will be returned by the next
+   --  call to Getc or Nextc.
+
+procedure Get_ALFA;
+--  Load ALFA information from ALI file text format into internal ALFA tables
+--  (ALFA.ALFA_Xref_Table, ALFA.ALFA_Scope_Table and ALFA.ALFA_File_Table). On
+--  entry the input file is positioned to the initial 'F' of the first ALFA
+--  line in the ALI file. On return, the file is positioned either to the end
+--  of file, or to the first character of the line following the ALFA
+--  information (which will never start with an 'F').
+--
+--  If a format error is detected in the input, then an exception is raised
+--  (Ada.IO_Exceptions.Data_Error), with the file positioned to the error.
Index: lib-xref.ads
===================================================================
--- lib-xref.ads	(revision 177169)
+++ lib-xref.ads	(working copy)
@@ -26,7 +26,9 @@
 --  This package contains for collecting and outputting cross-reference
 --  information.
 
-with Einfo; use Einfo;
+with Einfo;    use Einfo;
+with Lib.Util; use Lib.Util;
+with Put_ALFA;
 
 package Lib.Xref is
 
@@ -564,134 +566,6 @@
    --    y     abstract function               entry or entry family
    --    z     generic formal parameter        (unused)
 
-   -------------------------------------------------------------
-   -- Format of Local Cross-Reference Information in ALI File --
-   -------------------------------------------------------------
-
-   --  Local cross-reference sections follow the cross-reference section in an
-   --  ALI file, so that they need not be read by gnatbind, gnatmake etc.
-
-   --  A local cross-reference section has a header of the form
-
-   --     S line type col entity
-
-   --        These precisely define a subprogram or package, with the same
-   --        components as described for cross-reference sections.
-
-   --  These sections are grouped in chapters for each unit introduced by
-
-   --     F dependency-number filename
-
-   --  Each section groups a number of cross-reference sub-sections introduced
-   --  by
-
-   --     X dependency-number filename
-
-   --  Inside each cross-reference sub-section, there are a number of
-   --  references like
-
-   --     line type col entity ref ref ...
-
-   -----------------------------------
-   -- Local-Reference Entity Filter --
-   -----------------------------------
-
-   Lref_Entity_Status : array (Entity_Kind) of Boolean :=
-     (E_Void                                       => False,
-      E_Variable                                   => True,
-      E_Component                                  => False,
-      E_Constant                                   => True,
-      E_Discriminant                               => False,
-
-      E_Loop_Parameter                             => True,
-      E_In_Parameter                               => True,
-      E_Out_Parameter                              => True,
-      E_In_Out_Parameter                           => True,
-      E_Generic_In_Out_Parameter                   => False,
-
-      E_Generic_In_Parameter                       => False,
-      E_Named_Integer                              => False,
-      E_Named_Real                                 => False,
-      E_Enumeration_Type                           => False,
-      E_Enumeration_Subtype                        => False,
-
-      E_Signed_Integer_Type                        => False,
-      E_Signed_Integer_Subtype                     => False,
-      E_Modular_Integer_Type                       => False,
-      E_Modular_Integer_Subtype                    => False,
-      E_Ordinary_Fixed_Point_Type                  => False,
-
-      E_Ordinary_Fixed_Point_Subtype               => False,
-      E_Decimal_Fixed_Point_Type                   => False,
-      E_Decimal_Fixed_Point_Subtype                => False,
-      E_Floating_Point_Type                        => False,
-      E_Floating_Point_Subtype                     => False,
-
-      E_Access_Type                                => False,
-      E_Access_Subtype                             => False,
-      E_Access_Attribute_Type                      => False,
-      E_Allocator_Type                             => False,
-      E_General_Access_Type                        => False,
-
-      E_Access_Subprogram_Type                     => False,
-      E_Access_Protected_Subprogram_Type           => False,
-      E_Anonymous_Access_Subprogram_Type           => False,
-      E_Anonymous_Access_Protected_Subprogram_Type => False,
-      E_Anonymous_Access_Type                      => False,
-
-      E_Array_Type                                 => False,
-      E_Array_Subtype                              => False,
-      E_String_Type                                => False,
-      E_String_Subtype                             => False,
-      E_String_Literal_Subtype                     => False,
-
-      E_Class_Wide_Type                            => False,
-      E_Class_Wide_Subtype                         => False,
-      E_Record_Type                                => False,
-      E_Record_Subtype                             => False,
-      E_Record_Type_With_Private                   => False,
-
-      E_Record_Subtype_With_Private                => False,
-      E_Private_Type                               => False,
-      E_Private_Subtype                            => False,
-      E_Limited_Private_Type                       => False,
-      E_Limited_Private_Subtype                    => False,
-
-      E_Incomplete_Type                            => False,
-      E_Incomplete_Subtype                         => False,
-      E_Task_Type                                  => False,
-      E_Task_Subtype                               => False,
-      E_Protected_Type                             => False,
-
-      E_Protected_Subtype                          => False,
-      E_Exception_Type                             => False,
-      E_Subprogram_Type                            => False,
-      E_Enumeration_Literal                        => False,
-      E_Function                                   => True,
-
-      E_Operator                                   => True,
-      E_Procedure                                  => True,
-      E_Entry                                      => False,
-      E_Entry_Family                               => False,
-      E_Block                                      => False,
-
-      E_Entry_Index_Parameter                      => False,
-      E_Exception                                  => False,
-      E_Generic_Function                           => False,
-      E_Generic_Package                            => False,
-      E_Generic_Procedure                          => False,
-
-      E_Label                                      => False,
-      E_Loop                                       => False,
-      E_Return_Statement                           => False,
-      E_Package                                    => False,
-
-      E_Package_Body                               => False,
-      E_Protected_Object                           => False,
-      E_Protected_Body                             => False,
-      E_Task_Body                                  => False,
-      E_Subprogram_Body                            => False);
-
    --------------------------------------
    -- Handling of Imported Subprograms --
    --------------------------------------
@@ -708,6 +582,27 @@
    --  Import at line 4, that its body is in C, and that the link name as given
    --  in the pragma is "there".
 
+   ----------------------
+   -- ALFA Information --
+   ----------------------
+
+   --  This package defines procedures for collecting ALFA information and
+   --  printing in ALI files.
+
+   package ALFA is
+
+      procedure Collect_ALFA (Sdep_Table : Unit_Ref_Table; Num_Sdep : Nat);
+      --  Collect ALFA information from library units (for files and scopes)
+      --  and from cross-references. Fill in the tables in library package
+      --  called ALFA.
+
+      procedure Output_ALFA is new Put_ALFA;
+      --  Output ALFA information to the ALI files, based on the information
+      --  collected in the tables in library package called ALFA, and using
+      --  routines in Lib.Util.
+
+   end ALFA;
+
    -----------------
    -- Subprograms --
    -----------------
@@ -790,9 +685,6 @@
    procedure Output_References;
    --  Output references to the current ali file
 
-   procedure Output_Local_References;
-   --  Output references in each subprogram of the current ali file
-
    procedure Initialize;
    --  Initialize internal tables
 
Index: alfa_test.adb
===================================================================
--- alfa_test.adb	(revision 0)
+++ alfa_test.adb	(revision 0)
@@ -0,0 +1,332 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                          GNAT SYSTEM UTILITIES                           --
+--                                                                          --
+--                            A L F A _ T E S T                             --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--            Copyright (C) 2011, Free Software Foundation, Inc.            --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
+-- for  more details.  You should have  received  a copy of the GNU General --
+-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license.          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This utility program is used to test proper operation of the Get_ALFA and
+--  Put_ALFA units. To run it, compile any source file with switch -gnatd.E or
+--  -gnatd.F to get an ALI file file.ALI containing ALFA information. Then run
+--  this utility using:
+
+--     ALFA_Test file.ali
+
+--  This test will read the ALFA information from the ALI file, and use
+--  Get_ALFA to store this in binary form in the internal tables in ALFA. Then
+--  Put_ALFA is used to write the information from these tables back into text
+--  form. This output is compared with the original ALFA information in the ALI
+--  file and the two should be identical. If not an error message is output.
+
+with Get_ALFA;
+with Put_ALFA;
+
+with ALFA;  use ALFA;
+with Types; use Types;
+
+with Ada.Command_Line;      use Ada.Command_Line;
+with Ada.Streams;           use Ada.Streams;
+with Ada.Streams.Stream_IO; use Ada.Streams.Stream_IO;
+with Ada.Text_IO;
+
+procedure ALFA_Test is
+   Infile    : File_Type;
+   Outfile_1 : File_Type;
+   Outfile_2 : File_Type;
+   C         : Character;
+
+   Stop : exception;
+   --  Terminate execution
+
+   use ASCII;
+
+begin
+   if Argument_Count /= 1 then
+      Ada.Text_IO.Put_Line ("Usage: alfa_test FILE.ali");
+      raise Stop;
+   end if;
+
+   Create (Outfile_1, Out_File, "log1");
+   Create (Outfile_2, Out_File, "log2");
+   Open   (Infile,    In_File,  Argument (1));
+
+   --  Read input file till we get to first 'F' line
+
+   Process : declare
+      Output_Col : Positive := 1;
+
+      function Get_Char (F : File_Type) return Character;
+      --  Read one character from specified  file
+
+      procedure Put_Char (F : File_Type; C : Character);
+      --  Write one character to specified file
+
+      function Get_Output_Col return Positive;
+      --  Return current column in output file, where each line starts at
+      --  column 1 and terminate with LF, and HT is at columns 1, 9, etc.
+      --  All output is supposed to be carried through Put_Char.
+
+      --------------
+      -- Get_Char --
+      --------------
+
+      function Get_Char (F : File_Type) return Character is
+         Item : Stream_Element_Array (1 .. 1);
+         Last : Stream_Element_Offset;
+
+      begin
+         Read (F, Item, Last);
+
+         if Last /= 1 then
+            return Types.EOF;
+         else
+            return Character'Val (Item (1));
+         end if;
+      end Get_Char;
+
+      --------------------
+      -- Get_Output_Col --
+      --------------------
+
+      function Get_Output_Col return Positive is
+      begin
+         return Output_Col;
+      end Get_Output_Col;
+
+      --------------
+      -- Put_Char --
+      --------------
+
+      procedure Put_Char (F : File_Type; C : Character) is
+         Item : Stream_Element_Array (1 .. 1);
+      begin
+         if C /= CR and then C /= EOF then
+            if C = LF then
+               Output_Col := 1;
+            elsif C = HT then
+               Output_Col := ((Output_Col + 6) / 8) * 8 + 1;
+            else
+               Output_Col := Output_Col + 1;
+            end if;
+
+            Item (1) := Character'Pos (C);
+            Write (F, Item);
+         end if;
+      end Put_Char;
+
+      --  Subprograms used by Get_ALFA (these also copy the output to Outfile_1
+      --  for later comparison with the output generated by Put_ALFA).
+
+      function  Getc  return Character;
+      function  Nextc return Character;
+      procedure Skipc;
+
+      ----------
+      -- Getc --
+      ----------
+
+      function Getc  return Character is
+         C : Character;
+      begin
+         C := Get_Char (Infile);
+         Put_Char (Outfile_1, C);
+         return C;
+      end Getc;
+
+      -----------
+      -- Nextc --
+      -----------
+
+      function Nextc return Character is
+         C : Character;
+      begin
+         C := Get_Char (Infile);
+
+         if C /= EOF then
+            Set_Index (Infile, Index (Infile) - 1);
+         end if;
+
+         return C;
+      end Nextc;
+
+      -----------
+      -- Skipc --
+      -----------
+
+      procedure Skipc is
+         C : Character;
+         pragma Unreferenced (C);
+      begin
+         C := Getc;
+      end Skipc;
+
+      --  Subprograms used by Put_ALFA, which write information to Outfile_2
+
+      function Write_Info_Col return Positive;
+      procedure Write_Info_Char (C : Character);
+      procedure Write_Info_Initiate (Key : Character);
+      procedure Write_Info_Nat (N : Nat);
+      procedure Write_Info_Terminate;
+
+      --------------------
+      -- Write_Info_Col --
+      --------------------
+
+      function Write_Info_Col return Positive is
+      begin
+         return Get_Output_Col;
+      end Write_Info_Col;
+
+      ---------------------
+      -- Write_Info_Char --
+      ---------------------
+
+      procedure Write_Info_Char (C : Character) is
+      begin
+         Put_Char (Outfile_2, C);
+      end Write_Info_Char;
+
+      -------------------------
+      -- Write_Info_Initiate --
+      -------------------------
+
+      procedure Write_Info_Initiate (Key : Character) is
+      begin
+         Write_Info_Char (Key);
+      end Write_Info_Initiate;
+
+      --------------------
+      -- Write_Info_Nat --
+      --------------------
+
+      procedure Write_Info_Nat (N : Nat) is
+      begin
+         if N > 9 then
+            Write_Info_Nat (N / 10);
+         end if;
+
+         Write_Info_Char (Character'Val (48 + N mod 10));
+      end Write_Info_Nat;
+
+      --------------------------
+      -- Write_Info_Terminate --
+      --------------------------
+
+      procedure Write_Info_Terminate is
+      begin
+         Write_Info_Char (LF);
+      end Write_Info_Terminate;
+
+      --  Local instantiations of Put_ALFA and Get_ALFA
+
+      procedure Get_ALFA_Info is new Get_ALFA;
+      procedure Put_ALFA_Info is new Put_ALFA;
+
+   --  Start of processing for Process
+
+   begin
+      --  Loop to skip till first 'F' line
+
+      loop
+         C := Get_Char (Infile);
+
+         if C = EOF then
+            Ada.Text_IO.Put_Line
+              (Argument (1) & ": no SCO found, recompile with -gnateS");
+            raise Stop;
+
+         elsif C = LF or else C = CR then
+            loop
+               C := Get_Char (Infile);
+               exit when C /= LF and then C /= CR;
+            end loop;
+
+            exit when C = 'F';
+         end if;
+      end loop;
+
+      --  Position back to initial 'F' of first 'F' line
+
+      Set_Index (Infile, Index (Infile) - 1);
+
+      --  Read ALFA information to internal ALFA tables, also copying ALFA info
+      --  to Outfile_1.
+
+      Initialize_ALFA_Tables;
+      Get_ALFA_Info;
+
+      --  Write ALFA information from internal ALFA tables to Outfile_2
+
+      Put_ALFA_Info;
+
+      --  Junk blank line (see comment at end of Lib.Writ)
+
+      Write_Info_Terminate;
+
+      --  Now Outfile_1 and Outfile_2 should be identical
+
+      Compare_Files : declare
+         Line : Natural;
+         Col  : Natural;
+         C1   : Character;
+         C2   : Character;
+
+      begin
+         Reset (Outfile_1, In_File);
+         Reset (Outfile_2, In_File);
+
+         --  Loop to compare the two files
+
+         Line := 1;
+         Col  := 1;
+         loop
+            C1 := Get_Char (Outfile_1);
+            C2 := Get_Char (Outfile_2);
+            exit when C1 = EOF or else C1 /= C2;
+
+            if C1 = LF then
+               Line := Line + 1;
+               Col  := 1;
+            else
+               Col := Col + 1;
+            end if;
+         end loop;
+
+         --  If we reached the end of file, then the files were identical,
+         --  otherwise, we have a failure in the comparison.
+
+         if C1 = EOF then
+            --  Success: exit silently
+
+            null;
+
+         else
+            Ada.Text_IO.Put_Line
+              (Argument (1) & ": failure, files log1 and log2 differ at line"
+               & Line'Img & " column" & Col'Img);
+         end if;
+      end Compare_Files;
+   end Process;
+
+exception
+   when Stop =>
+      null;
+end ALFA_Test;
Index: gcc-interface/Make-lang.in
===================================================================
--- gcc-interface/Make-lang.in	(revision 177191)
+++ gcc-interface/Make-lang.in	(working copy)
@@ -124,6 +124,7 @@
  ada/a-except.o	\
  ada/a-ioexce.o	\
  ada/ada.o	\
+ ada/alfa.o	\
  ada/ali.o	\
  ada/alloc.o	\
  ada/aspects.o  \
@@ -184,6 +185,7 @@
  ada/g-spchge.o	\
  ada/g-speche.o	\
  ada/g-u3spch.o	\
+ ada/get_alfa.o \
  ada/get_scos.o	\
  ada/get_targ.o	\
  ada/gnat.o	\
@@ -214,6 +216,7 @@
  ada/par_sco.o	\
  ada/prep.o	\
  ada/prepcomp.o	\
+ ada/put_alfa.o	\
  ada/put_scos.o	\
  ada/repinfo.o	\
  ada/restrict.o	\
@@ -1293,6 +1296,15 @@
 
 ada/ada.o : ada/ada.ads ada/system.ads 
 
+ada/alfa.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
+   ada/a-uncdea.ads ada/alfa.ads ada/alfa.adb ada/gnat.ads ada/g-table.ads \
+   ada/g-table.adb ada/hostparm.ads ada/output.ads ada/output.adb \
+   ada/put_alfa.ads ada/put_alfa.adb ada/system.ads ada/s-exctab.ads \
+   ada/s-memory.ads ada/s-os_lib.ads ada/s-parame.ads ada/s-soflin.ads \
+   ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
+   ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads ada/types.ads \
+   ada/unchconv.ads ada/unchdeal.ads 
+
 ada/ali-util.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/ali.ads ada/ali.adb ada/ali-util.ads \
    ada/ali-util.adb ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -1483,30 +1495,31 @@
    ada/freeze.ads ada/get_targ.ads ada/gnat.ads ada/g-hesorg.ads \
    ada/g-htable.ads ada/gnatvsn.ads ada/hlo.ads ada/hostparm.ads \
    ada/inline.ads ada/interfac.ads ada/itypes.ads ada/lib.ads ada/lib.adb \
-   ada/lib-list.adb ada/lib-load.ads ada/lib-sort.adb ada/lib-xref.ads \
-   ada/namet.ads ada/namet.adb ada/nlists.ads ada/nlists.adb ada/nmake.ads \
-   ada/nmake.adb ada/opt.ads ada/output.ads ada/par_sco.ads \
-   ada/restrict.ads ada/restrict.adb ada/rident.ads ada/rtsfind.ads \
-   ada/rtsfind.adb ada/scans.ads ada/sem.ads ada/sem.adb ada/sem_attr.ads \
-   ada/sem_aux.ads ada/sem_aux.adb ada/sem_cat.ads ada/sem_ch10.ads \
-   ada/sem_ch11.ads ada/sem_ch12.ads ada/sem_ch13.ads ada/sem_ch2.ads \
-   ada/sem_ch3.ads ada/sem_ch4.ads ada/sem_ch5.ads ada/sem_ch6.ads \
-   ada/sem_ch7.ads ada/sem_ch8.ads ada/sem_ch9.ads ada/sem_disp.ads \
-   ada/sem_dist.ads ada/sem_eval.ads ada/sem_eval.adb ada/sem_prag.ads \
-   ada/sem_res.ads ada/sem_type.ads ada/sem_util.ads ada/sem_util.adb \
-   ada/sem_warn.ads ada/sem_warn.adb ada/sinfo.ads ada/sinfo.adb \
-   ada/sinput.ads ada/sinput.adb ada/snames.ads ada/sprint.ads \
-   ada/stand.ads ada/stringt.ads ada/stringt.adb ada/style.ads \
-   ada/styleg.ads ada/styleg.adb ada/stylesw.ads ada/system.ads \
-   ada/s-exctab.ads ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads \
-   ada/s-os_lib.ads ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads \
-   ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
-   ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads \
-   ada/s-wchcon.ads ada/table.ads ada/table.adb ada/targparm.ads \
-   ada/tbuild.ads ada/tbuild.adb ada/tree_io.ads ada/ttypes.ads \
-   ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/urealp.adb \
-   ada/validsw.ads ada/widechar.ads 
+   ada/lib-list.adb ada/lib-load.ads ada/lib-sort.adb ada/lib-util.ads \
+   ada/lib-xref.ads ada/namet.ads ada/namet.adb ada/nlists.ads \
+   ada/nlists.adb ada/nmake.ads ada/nmake.adb ada/opt.ads ada/output.ads \
+   ada/par_sco.ads ada/put_alfa.ads ada/restrict.ads ada/restrict.adb \
+   ada/rident.ads ada/rtsfind.ads ada/rtsfind.adb ada/scans.ads \
+   ada/sem.ads ada/sem.adb ada/sem_attr.ads ada/sem_aux.ads \
+   ada/sem_aux.adb ada/sem_cat.ads ada/sem_ch10.ads ada/sem_ch11.ads \
+   ada/sem_ch12.ads ada/sem_ch13.ads ada/sem_ch2.ads ada/sem_ch3.ads \
+   ada/sem_ch4.ads ada/sem_ch5.ads ada/sem_ch6.ads ada/sem_ch7.ads \
+   ada/sem_ch8.ads ada/sem_ch9.ads ada/sem_disp.ads ada/sem_dist.ads \
+   ada/sem_eval.ads ada/sem_eval.adb ada/sem_prag.ads ada/sem_res.ads \
+   ada/sem_type.ads ada/sem_util.ads ada/sem_util.adb ada/sem_warn.ads \
+   ada/sem_warn.adb ada/sinfo.ads ada/sinfo.adb ada/sinput.ads \
+   ada/sinput.adb ada/snames.ads ada/sprint.ads ada/stand.ads \
+   ada/stringt.ads ada/stringt.adb ada/style.ads ada/styleg.ads \
+   ada/styleg.adb ada/stylesw.ads ada/system.ads ada/s-exctab.ads \
+   ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads ada/s-os_lib.ads \
+   ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads \
+   ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
+   ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads \
+   ada/table.ads ada/table.adb ada/targparm.ads ada/tbuild.ads \
+   ada/tbuild.adb ada/tree_io.ads ada/ttypes.ads ada/types.ads \
+   ada/uintp.ads ada/uintp.adb ada/uname.ads ada/unchconv.ads \
+   ada/unchdeal.ads ada/urealp.ads ada/urealp.adb ada/validsw.ads \
+   ada/widechar.ads 
 
 ada/comperr.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -1542,25 +1555,26 @@
    ada/exp_ch11.ads ada/exp_disp.ads ada/exp_tss.ads ada/exp_util.ads \
    ada/fname.ads ada/fname-uf.ads ada/freeze.ads ada/get_targ.ads \
    ada/gnat.ads ada/g-htable.ads ada/gnatvsn.ads ada/hostparm.ads \
-   ada/interfac.ads ada/layout.ads ada/lib.ads ada/lib-xref.ads \
-   ada/namet.ads ada/namet.adb ada/nlists.ads ada/nlists.adb ada/nmake.ads \
-   ada/nmake.adb ada/opt.ads ada/output.ads ada/restrict.ads \
-   ada/restrict.adb ada/rident.ads ada/rtsfind.ads ada/scans.ads \
-   ada/scn.ads ada/scng.ads ada/scng.adb ada/sem.ads ada/sem_attr.ads \
-   ada/sem_aux.ads ada/sem_ch8.ads ada/sem_disp.ads ada/sem_eval.ads \
-   ada/sem_mech.ads ada/sem_res.ads ada/sem_type.ads ada/sem_util.ads \
-   ada/sem_util.adb ada/sinfo.ads ada/sinfo.adb ada/sinput.ads \
-   ada/sinput.adb ada/snames.ads ada/stand.ads ada/stringt.ads \
-   ada/style.ads ada/styleg.ads ada/styleg.adb ada/stylesw.ads \
-   ada/system.ads ada/s-crc32.ads ada/s-crc32.adb ada/s-exctab.ads \
-   ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads ada/s-os_lib.ads \
-   ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads \
-   ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
-   ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads ada/s-utf_32.ads \
-   ada/s-wchcon.ads ada/table.ads ada/table.adb ada/targparm.ads \
-   ada/tbuild.ads ada/tree_io.ads ada/ttypes.ads ada/types.ads \
-   ada/uintp.ads ada/uintp.adb ada/uname.ads ada/unchconv.ads \
-   ada/unchdeal.ads ada/urealp.ads ada/urealp.adb ada/widechar.ads 
+   ada/interfac.ads ada/layout.ads ada/lib.ads ada/lib-util.ads \
+   ada/lib-xref.ads ada/namet.ads ada/namet.adb ada/nlists.ads \
+   ada/nlists.adb ada/nmake.ads ada/nmake.adb ada/opt.ads ada/output.ads \
+   ada/put_alfa.ads ada/restrict.ads ada/restrict.adb ada/rident.ads \
+   ada/rtsfind.ads ada/scans.ads ada/scn.ads ada/scng.ads ada/scng.adb \
+   ada/sem.ads ada/sem_attr.ads ada/sem_aux.ads ada/sem_ch8.ads \
+   ada/sem_disp.ads ada/sem_eval.ads ada/sem_mech.ads ada/sem_res.ads \
+   ada/sem_type.ads ada/sem_util.ads ada/sem_util.adb ada/sinfo.ads \
+   ada/sinfo.adb ada/sinput.ads ada/sinput.adb ada/snames.ads \
+   ada/stand.ads ada/stringt.ads ada/style.ads ada/styleg.ads \
+   ada/styleg.adb ada/stylesw.ads ada/system.ads ada/s-crc32.ads \
+   ada/s-crc32.adb ada/s-exctab.ads ada/s-htable.ads ada/s-imenne.ads \
+   ada/s-memory.ads ada/s-os_lib.ads ada/s-parame.ads ada/s-rident.ads \
+   ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads \
+   ada/s-stoele.ads ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads \
+   ada/s-unstyp.ads ada/s-utf_32.ads ada/s-wchcon.ads ada/table.ads \
+   ada/table.adb ada/targparm.ads ada/tbuild.ads ada/tree_io.ads \
+   ada/ttypes.ads ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
+   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/urealp.adb \
+   ada/widechar.ads 
 
 ada/debug.o : ada/debug.ads ada/debug.adb ada/system.ads 
 
@@ -1680,28 +1694,28 @@
    ada/gnat.ads ada/g-hesorg.ads ada/g-htable.ads ada/gnatvsn.ads \
    ada/hlo.ads ada/hostparm.ads ada/inline.ads ada/interfac.ads \
    ada/itypes.ads ada/lib.ads ada/lib.adb ada/lib-list.adb \
-   ada/lib-load.ads ada/lib-sort.adb ada/lib-xref.ads ada/namet.ads \
-   ada/namet.adb ada/nlists.ads ada/nlists.adb ada/nmake.ads ada/nmake.adb \
-   ada/opt.ads ada/output.ads ada/restrict.ads ada/restrict.adb \
-   ada/rident.ads ada/rtsfind.ads ada/rtsfind.adb ada/scans.ads \
-   ada/sem.ads ada/sem.adb ada/sem_aggr.ads ada/sem_attr.ads \
-   ada/sem_aux.ads ada/sem_aux.adb ada/sem_cat.ads ada/sem_ch10.ads \
-   ada/sem_ch11.ads ada/sem_ch12.ads ada/sem_ch13.ads ada/sem_ch2.ads \
-   ada/sem_ch3.ads ada/sem_ch4.ads ada/sem_ch5.ads ada/sem_ch6.ads \
-   ada/sem_ch7.ads ada/sem_ch8.ads ada/sem_ch9.ads ada/sem_disp.ads \
-   ada/sem_dist.ads ada/sem_eval.ads ada/sem_eval.adb ada/sem_prag.ads \
-   ada/sem_res.ads ada/sem_type.ads ada/sem_util.ads ada/sem_util.adb \
-   ada/sem_warn.ads ada/sinfo.ads ada/sinfo.adb ada/sinput.ads \
-   ada/sinput.adb ada/snames.ads ada/sprint.ads ada/stand.ads \
-   ada/stringt.ads ada/stringt.adb ada/style.ads ada/styleg.ads \
-   ada/styleg.adb ada/stylesw.ads ada/system.ads ada/s-exctab.ads \
-   ada/s-exctab.adb ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads \
-   ada/s-os_lib.ads ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads \
-   ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
-   ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads \
-   ada/s-wchcon.ads ada/table.ads ada/table.adb ada/targparm.ads \
-   ada/tbuild.ads ada/tbuild.adb ada/tree_io.ads ada/ttypes.ads \
-   ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
+   ada/lib-load.ads ada/lib-sort.adb ada/lib-util.ads ada/lib-xref.ads \
+   ada/namet.ads ada/namet.adb ada/nlists.ads ada/nlists.adb ada/nmake.ads \
+   ada/nmake.adb ada/opt.ads ada/output.ads ada/put_alfa.ads \
+   ada/restrict.ads ada/restrict.adb ada/rident.ads ada/rtsfind.ads \
+   ada/rtsfind.adb ada/scans.ads ada/sem.ads ada/sem.adb ada/sem_aggr.ads \
+   ada/sem_attr.ads ada/sem_aux.ads ada/sem_aux.adb ada/sem_cat.ads \
+   ada/sem_ch10.ads ada/sem_ch11.ads ada/sem_ch12.ads ada/sem_ch13.ads \
+   ada/sem_ch2.ads ada/sem_ch3.ads ada/sem_ch4.ads ada/sem_ch5.ads \
+   ada/sem_ch6.ads ada/sem_ch7.ads ada/sem_ch8.ads ada/sem_ch9.ads \
+   ada/sem_disp.ads ada/sem_dist.ads ada/sem_eval.ads ada/sem_eval.adb \
+   ada/sem_prag.ads ada/sem_res.ads ada/sem_type.ads ada/sem_util.ads \
+   ada/sem_util.adb ada/sem_warn.ads ada/sinfo.ads ada/sinfo.adb \
+   ada/sinput.ads ada/sinput.adb ada/snames.ads ada/sprint.ads \
+   ada/stand.ads ada/stringt.ads ada/stringt.adb ada/style.ads \
+   ada/styleg.ads ada/styleg.adb ada/stylesw.ads ada/system.ads \
+   ada/s-exctab.ads ada/s-exctab.adb ada/s-htable.ads ada/s-imenne.ads \
+   ada/s-memory.ads ada/s-os_lib.ads ada/s-parame.ads ada/s-rident.ads \
+   ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads \
+   ada/s-stoele.ads ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads \
+   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+   ada/targparm.ads ada/tbuild.ads ada/tbuild.adb ada/tree_io.ads \
+   ada/ttypes.ads ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
    ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/validsw.ads \
    ada/widechar.ads 
 
@@ -1743,48 +1757,49 @@
    ada/g-hesorg.ads ada/g-htable.ads ada/gnatvsn.ads ada/hlo.ads \
    ada/hostparm.ads ada/inline.ads ada/interfac.ads ada/itypes.ads \
    ada/lib.ads ada/lib.adb ada/lib-list.adb ada/lib-load.ads \
-   ada/lib-sort.adb ada/lib-xref.ads ada/namet.ads ada/namet.adb \
-   ada/nlists.ads ada/nlists.adb ada/nmake.ads ada/nmake.adb ada/opt.ads \
-   ada/output.ads ada/restrict.ads ada/restrict.adb ada/rident.ads \
-   ada/rtsfind.ads ada/scans.ads ada/sem.ads ada/sem.adb ada/sem_attr.ads \
-   ada/sem_aux.ads ada/sem_aux.adb ada/sem_ch10.ads ada/sem_ch11.ads \
-   ada/sem_ch12.ads ada/sem_ch13.ads ada/sem_ch2.ads ada/sem_ch3.ads \
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 ada/exp_cg.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
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+   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/widechar.ads 
 
 ada/exp_ch11.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -1950,30 +1965,31 @@
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+   ada/unchdeal.ads ada/urealp.ads ada/urealp.adb ada/validsw.ads \
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 ada/exp_ch5.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -1987,29 +2003,29 @@
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-   ada/unchdeal.ads ada/urealp.ads ada/validsw.ads ada/warnsw.ads \
-   ada/widechar.ads 
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 ada/exp_ch6.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -2027,30 +2043,30 @@
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+   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/validsw.ads \
+   ada/warnsw.ads ada/widechar.ads 
 
 ada/exp_ch7.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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-   ada/uintp.adb ada/uname.ads ada/unchconv.ads ada/unchdeal.ads \
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 ada/exp_code.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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 ada/exp_dbug.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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-   ada/types.ads ada/types.adb ada/uintp.ads ada/uintp.adb ada/uname.ads \
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    ada/widechar.ads 
 
 ada/exp_dist.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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+   ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads \
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 ada/exp_imgv.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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-   ada/warnsw.ads ada/widechar.ads 
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+   ada/uintp.adb ada/uname.ads ada/unchconv.ads ada/unchdeal.ads \
+   ada/urealp.ads ada/validsw.ads ada/warnsw.ads ada/widechar.ads 
 
 ada/exp_prag.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -2486,12 +2504,12 @@
 
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-   ada/fname.ads ada/fname-uf.ads ada/gnat.ads ada/g-hesorg.ads \
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-   ada/lib.adb ada/lib-list.adb ada/lib-sort.adb ada/namet.ads \
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+   ada/einfo.adb ada/elists.ads ada/elists.adb ada/err_vars.ads \
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+   ada/exp_util.ads ada/fname.ads ada/fname-uf.ads ada/gnat.ads \
+   ada/g-hesorg.ads ada/g-htable.ads ada/hostparm.ads ada/interfac.ads \
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    ada/rtsfind.ads ada/sem_aux.ads ada/sem_aux.adb ada/sem_util.ads \
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-   ada/unchdeal.ads ada/urealp.ads ada/urealp.adb ada/validsw.ads \
-   ada/widechar.ads 
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+   ada/uname.ads ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads \
+   ada/urealp.adb ada/validsw.ads ada/widechar.ads 
 
 ada/exp_vfpt.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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    ada/inline.ads ada/interfac.ads ada/itypes.ads ada/layout.ads \
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-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/validsw.ads \
-   ada/warnsw.ads ada/widechar.ads 
+   ada/lib-sort.adb ada/lib-util.ads ada/lib-xref.ads ada/namet.ads \
+   ada/namet.adb ada/nlists.ads ada/nlists.adb ada/nmake.ads ada/nmake.adb \
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+   ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
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+   ada/s-wchcon.ads ada/table.ads ada/table.adb ada/targparm.ads \
+   ada/tbuild.ads ada/tree_io.ads ada/ttypes.ads ada/types.ads \
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+   ada/unchdeal.ads ada/urealp.ads ada/validsw.ads ada/warnsw.ads \
+   ada/widechar.ads 
 
 ada/frontend.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -2719,6 +2738,14 @@
    ada/g-u3spch.ads ada/g-u3spch.adb ada/system.ads ada/s-wchcnv.ads \
    ada/s-wchcon.ads 
 
+ada/get_alfa.o : ada/ada.ads ada/a-ioexce.ads ada/a-unccon.ads \
+   ada/a-uncdea.ads ada/alfa.ads ada/alfa.adb ada/get_alfa.ads \
+   ada/get_alfa.adb ada/gnat.ads ada/g-table.ads ada/g-table.adb \
+   ada/hostparm.ads ada/output.ads ada/put_alfa.ads ada/system.ads \
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+   ada/s-string.ads ada/s-unstyp.ads ada/types.ads ada/unchconv.ads \
+   ada/unchdeal.ads 
+
 ada/get_scos.o : ada/ada.ads ada/a-ioexce.ads ada/a-unccon.ads \
    ada/get_scos.ads ada/get_scos.adb ada/gnat.ads ada/g-table.ads \
    ada/g-table.adb ada/scos.ads ada/scos.adb ada/system.ads \
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+   ada/par_sco.ads ada/prepcomp.ads ada/put_alfa.ads ada/repinfo.ads \
+   ada/restrict.ads ada/restrict.adb ada/rident.ads ada/rtsfind.ads \
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-   ada/unchdeal.ads ada/urealp.ads ada/validsw.ads ada/warnsw.ads \
-   ada/widechar.ads 
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+   ada/snames.ads ada/sprint.ads ada/stand.ads ada/stringt.ads \
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+   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/validsw.ads \
+   ada/warnsw.ads ada/widechar.ads 
 
 ada/lib-load.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -2962,13 +2989,13 @@
 
 ada/lib-util.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
-   ada/atree.adb ada/casing.ads ada/debug.ads ada/einfo.ads ada/einfo.adb \
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-   ada/sinfo.adb ada/sinput.ads ada/snames.ads ada/stand.ads \
+   ada/atree.adb ada/casing.ads ada/csets.ads ada/debug.ads ada/einfo.ads \
+   ada/einfo.adb ada/fname.ads ada/gnat.ads ada/g-hesorg.ads \
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+   ada/lib-util.adb ada/namet.ads ada/namet.adb ada/nlists.ads \
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    ada/stringt.ads ada/stringt.adb ada/system.ads ada/s-carun8.ads \
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    ada/s-os_lib.ads ada/s-parame.ads ada/s-secsta.ads ada/s-stalib.ads \
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    ada/nlists.ads ada/nlists.adb ada/nmake.ads ada/nmake.adb ada/opt.ads \
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-   ada/snames.ads ada/stand.ads ada/stringt.ads ada/stringt.adb \
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-   ada/targparm.ads ada/tbuild.ads ada/tbuild.adb ada/tree_io.ads \
-   ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
+   ada/par_sco.ads ada/put_alfa.ads ada/restrict.ads ada/restrict.adb \
+   ada/rident.ads ada/scans.ads ada/scn.ads ada/scng.ads ada/scng.adb \
+   ada/sem_aux.ads ada/sinfo.ads ada/sinfo.adb ada/sinput.ads \
+   ada/sinput.adb ada/snames.ads ada/stand.ads ada/stringt.ads \
+   ada/stringt.adb ada/style.ads ada/styleg.ads ada/styleg.adb \
+   ada/stylesw.ads ada/system.ads ada/s-casuti.ads ada/s-crc32.ads \
+   ada/s-crc32.adb ada/s-exctab.ads ada/s-htable.ads ada/s-imenne.ads \
+   ada/s-memory.ads ada/s-os_lib.ads ada/s-parame.ads ada/s-rident.ads \
+   ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads \
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+   ada/s-unstyp.ads ada/s-utf_32.ads ada/s-wchcon.ads ada/table.ads \
+   ada/table.adb ada/targparm.ads ada/tbuild.ads ada/tbuild.adb \
+   ada/tree_io.ads ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
    ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/widechar.ads 
 
 ada/lib-xref.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
-   ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
-   ada/atree.adb ada/casing.ads ada/csets.ads ada/debug.ads \
-   ada/debug_a.ads ada/einfo.ads ada/einfo.adb ada/elists.ads \
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-   ada/erroutc.ads ada/erroutc.adb ada/exp_code.ads ada/exp_tss.ads \
-   ada/expander.ads ada/fname.ads ada/fname-uf.ads ada/gnat.ads \
-   ada/g-hesorg.ads ada/g-hesorg.adb ada/g-htable.ads ada/gnatvsn.ads \
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-   ada/lib-xref.adb ada/namet.ads ada/namet.adb ada/nlists.ads \
+   ada/a-uncdea.ads ada/alfa.ads ada/alfa.adb ada/alloc.ads \
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+   ada/exp_tss.ads ada/expander.ads ada/fname.ads ada/fname-uf.ads \
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+   ada/g-table.ads ada/g-table.adb ada/gnatvsn.ads ada/hlo.ads \
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+   ada/lib.adb ada/lib-list.adb ada/lib-load.ads ada/lib-sort.adb \
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    ada/nlists.adb ada/nmake.ads ada/opt.ads ada/osint.ads ada/osint-c.ads \
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-   ada/rident.ads ada/rtsfind.ads ada/scans.ads ada/sem.ads ada/sem.adb \
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-   ada/sem_ch11.ads ada/sem_ch12.ads ada/sem_ch13.ads ada/sem_ch2.ads \
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-   ada/sem_prag.ads ada/sem_util.ads ada/sem_warn.ads ada/sem_warn.adb \
-   ada/sinfo.ads ada/sinfo.adb ada/sinput.ads ada/sinput.adb \
-   ada/snames.ads ada/stand.ads ada/stringt.ads ada/stylesw.ads \
-   ada/system.ads ada/s-exctab.ads ada/s-htable.ads ada/s-imenne.ads \
-   ada/s-memory.ads ada/s-os_lib.ads ada/s-parame.ads ada/s-rident.ads \
-   ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads \
-   ada/s-stoele.ads ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads \
+   ada/output.ads ada/par_sco.ads ada/put_alfa.ads ada/put_alfa.adb \
+   ada/restrict.ads ada/restrict.adb ada/rident.ads ada/rtsfind.ads \
+   ada/scans.ads ada/sem.ads ada/sem.adb ada/sem_attr.ads ada/sem_aux.ads \
+   ada/sem_aux.adb ada/sem_ch10.ads ada/sem_ch11.ads ada/sem_ch12.ads \
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+   ada/sem_ch5.ads ada/sem_ch6.ads ada/sem_ch7.ads ada/sem_ch8.ads \
+   ada/sem_ch9.ads ada/sem_eval.ads ada/sem_prag.ads ada/sem_util.ads \
+   ada/sem_warn.ads ada/sem_warn.adb ada/sinfo.ads ada/sinfo.adb \
+   ada/sinput.ads ada/sinput.adb ada/snames.ads ada/stand.ads \
+   ada/stringt.ads ada/stylesw.ads ada/system.ads ada/s-exctab.ads \
+   ada/s-htable.ads ada/s-htable.adb ada/s-imenne.ads ada/s-memory.ads \
+   ada/s-os_lib.ads ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads \
+   ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
+   ada/s-stoele.adb ada/s-strhas.ads ada/s-string.ads ada/s-traent.ads \
    ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
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    ada/uintp.adb ada/uname.ads ada/unchconv.ads ada/unchdeal.ads \
@@ -3038,26 +3067,26 @@
 
 ada/lib.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads ada/a-uncdea.ads \
    ada/alloc.ads ada/aspects.ads ada/atree.ads ada/atree.adb \
-   ada/casing.ads ada/debug.ads ada/einfo.ads ada/einfo.adb ada/fname.ads \
-   ada/gnat.ads ada/g-hesorg.ads ada/g-hesorg.adb ada/g-htable.ads \
-   ada/hostparm.ads ada/interfac.ads ada/lib.ads ada/lib.adb \
-   ada/lib-list.adb ada/lib-sort.adb ada/namet.ads ada/namet.adb \
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-   ada/stand.ads ada/stringt.ads ada/system.ads ada/s-exctab.ads \
-   ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads ada/s-os_lib.ads \
-   ada/s-parame.ads ada/s-secsta.ads ada/s-stalib.ads ada/s-stoele.ads \
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-   ada/s-wchcon.ads ada/table.ads ada/table.adb ada/tree_io.ads \
-   ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
+   ada/casing.ads ada/csets.ads ada/debug.ads ada/einfo.ads ada/einfo.adb \
+   ada/fname.ads ada/gnat.ads ada/g-hesorg.ads ada/g-hesorg.adb \
+   ada/g-htable.ads ada/hostparm.ads ada/interfac.ads ada/lib.ads \
+   ada/lib.adb ada/lib-list.adb ada/lib-sort.adb ada/namet.ads \
+   ada/namet.adb ada/nlists.ads ada/nlists.adb ada/opt.ads ada/output.ads \
+   ada/sinfo.ads ada/sinfo.adb ada/sinput.ads ada/sinput.adb \
+   ada/snames.ads ada/stand.ads ada/stringt.ads ada/system.ads \
+   ada/s-exctab.ads ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads \
+   ada/s-os_lib.ads ada/s-parame.ads ada/s-secsta.ads ada/s-stalib.ads \
+   ada/s-stoele.ads ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads \
+   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+   ada/tree_io.ads ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
    ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/widechar.ads 
 
 ada/live.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
-   ada/atree.adb ada/casing.ads ada/debug.ads ada/einfo.ads ada/einfo.adb \
-   ada/fname.ads ada/gnat.ads ada/g-hesorg.ads ada/g-htable.ads \
-   ada/hostparm.ads ada/interfac.ads ada/lib.ads ada/lib.adb \
-   ada/lib-list.adb ada/lib-sort.adb ada/live.ads ada/live.adb \
+   ada/atree.adb ada/casing.ads ada/csets.ads ada/debug.ads ada/einfo.ads \
+   ada/einfo.adb ada/fname.ads ada/gnat.ads ada/g-hesorg.ads \
+   ada/g-htable.ads ada/hostparm.ads ada/interfac.ads ada/lib.ads \
+   ada/lib.adb ada/lib-list.adb ada/lib-sort.adb ada/live.ads ada/live.adb \
    ada/namet.ads ada/namet.adb ada/nlists.ads ada/nlists.adb ada/nmake.ads \
    ada/opt.ads ada/output.ads ada/sem_util.ads ada/sinfo.ads ada/sinfo.adb \
    ada/sinput.ads ada/sinput.adb ada/snames.ads ada/stand.ads \
@@ -3204,15 +3233,15 @@
 
 ada/par_sco.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
-   ada/atree.adb ada/casing.ads ada/debug.ads ada/einfo.ads ada/einfo.adb \
-   ada/fname.ads ada/gnat.ads ada/g-hesorg.ads ada/g-hesorg.adb \
-   ada/g-htable.ads ada/g-table.ads ada/g-table.adb ada/hostparm.ads \
-   ada/interfac.ads ada/lib.ads ada/lib.adb ada/lib-list.adb \
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-   ada/osint-c.ads ada/output.ads ada/par_sco.ads ada/par_sco.adb \
-   ada/put_scos.ads ada/put_scos.adb ada/scos.ads ada/scos.adb \
-   ada/sinfo.ads ada/sinfo.adb ada/sinput.ads ada/sinput.adb \
+   ada/atree.adb ada/casing.ads ada/csets.ads ada/debug.ads ada/einfo.ads \
+   ada/einfo.adb ada/fname.ads ada/gnat.ads ada/g-hesorg.ads \
+   ada/g-hesorg.adb ada/g-htable.ads ada/g-table.ads ada/g-table.adb \
+   ada/hostparm.ads ada/interfac.ads ada/lib.ads ada/lib.adb \
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+   ada/namet.ads ada/namet.adb ada/nlists.ads ada/nlists.adb ada/opt.ads \
+   ada/osint.ads ada/osint-c.ads ada/output.ads ada/par_sco.ads \
+   ada/par_sco.adb ada/put_scos.ads ada/put_scos.adb ada/scos.ads \
+   ada/scos.adb ada/sinfo.ads ada/sinfo.adb ada/sinput.ads ada/sinput.adb \
    ada/snames.ads ada/stand.ads ada/stringt.ads ada/system.ads \
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    ada/s-memory.ads ada/s-os_lib.ads ada/s-parame.ads ada/s-secsta.ads \
@@ -3251,21 +3280,29 @@
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    ada/nlists.adb ada/opt.ads ada/osint.ads ada/osint-c.ads ada/output.ads \
    ada/par.ads ada/par_sco.ads ada/prep.ads ada/prep.adb ada/prepcomp.ads \
-   ada/prepcomp.adb ada/restrict.ads ada/restrict.adb ada/rident.ads \
-   ada/scans.ads ada/scn.ads ada/scng.ads ada/scng.adb ada/sem_aux.ads \
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-   ada/stringt.adb ada/style.ads ada/styleg.ads ada/styleg.adb \
-   ada/stylesw.ads ada/system.ads ada/s-casuti.ads ada/s-carun8.ads \
-   ada/s-crc32.ads ada/s-crc32.adb ada/s-exctab.ads ada/s-htable.ads \
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-   ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads \
-   ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb ada/s-string.ads \
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+ada/put_alfa.o : ada/ada.ads ada/a-unccon.ads ada/a-uncdea.ads \
+   ada/alfa.ads ada/alfa.adb ada/gnat.ads ada/g-table.ads ada/g-table.adb \
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+
 ada/put_scos.o : ada/ada.ads ada/a-unccon.ads ada/gnat.ads ada/g-table.ads \
    ada/g-table.adb ada/put_scos.ads ada/put_scos.adb ada/scos.ads \
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 ada/restrict.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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+   ada/uname.ads ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads \
+   ada/warnsw.ads ada/widechar.ads 
 
 ada/sem_aggr.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -3605,30 +3643,31 @@
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    ada/gnatvsn.ads ada/hlo.ads ada/hostparm.ads ada/inline.ads \
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+   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/validsw.ads \
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 ada/sem_attr.o : ada/ada.ads ada/a-charac.ads ada/a-chlat1.ads \
    ada/a-except.ads ada/a-unccon.ads ada/a-uncdea.ads ada/alloc.ads \
@@ -3644,32 +3683,32 @@
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    ada/hostparm.ads ada/inline.ads ada/interfac.ads ada/itypes.ads \
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-   ada/unchdeal.ads ada/urealp.ads ada/urealp.adb ada/validsw.ads \
-   ada/widechar.ads 
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 ada/sem_aux.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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 ada/sem_ch10.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
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 ada/sem_ch11.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
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 ada/sem_ch12.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/aspects.adb \
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 ada/sem_ch13.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/aspects.adb \
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-   ada/validsw.ads ada/warnsw.ads ada/widechar.ads 
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 ada/sem_ch2.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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+   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/urealp.adb \
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 ada/sem_ch4.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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-   ada/uintp.adb ada/uname.ads ada/unchconv.ads ada/unchdeal.ads \
-   ada/urealp.ads ada/widechar.ads 
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 ada/sem_ch5.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -4000,31 +4042,32 @@
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    ada/hlo.ads ada/hostparm.ads ada/inline.ads ada/interfac.ads \
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-   ada/unchdeal.ads ada/urealp.ads ada/validsw.ads ada/widechar.ads 
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 ada/sem_ch6.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -4039,31 +4082,32 @@
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+   ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads ada/s-os_lib.ads \
+   ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads \
+   ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
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 ada/sem_ch7.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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-   ada/unchdeal.ads ada/urealp.ads ada/warnsw.ads ada/widechar.ads 
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 ada/sem_ch8.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/widechar.ads 
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 ada/sem_ch9.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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    ada/hostparm.ads ada/inline.ads ada/interfac.ads ada/itypes.ads \
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-   ada/urealp.ads ada/validsw.ads ada/warnsw.ads ada/widechar.ads 
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 ada/sem_disp.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
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 ada/sem_scil.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
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    ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/widechar.ads 
 
 ada/sem_util.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
@@ -4548,28 +4597,28 @@
    ada/get_targ.ads ada/gnat.ads ada/g-hesorg.ads ada/g-htable.ads \
    ada/gnatvsn.ads ada/hlo.ads ada/hostparm.ads ada/inline.ads \
    ada/interfac.ads ada/lib.ads ada/lib.adb ada/lib-list.adb \
-   ada/lib-load.ads ada/lib-sort.adb ada/lib-xref.ads ada/namet.ads \
-   ada/namet.adb ada/nlists.ads ada/nlists.adb ada/nmake.ads ada/nmake.adb \
-   ada/opt.ads ada/output.ads ada/restrict.ads ada/restrict.adb \
-   ada/rident.ads ada/rtsfind.ads ada/rtsfind.adb ada/scans.ads \
-   ada/sem.ads ada/sem.adb ada/sem_attr.ads ada/sem_aux.ads \
-   ada/sem_aux.adb ada/sem_cat.ads ada/sem_ch10.ads ada/sem_ch11.ads \
-   ada/sem_ch12.ads ada/sem_ch13.ads ada/sem_ch2.ads ada/sem_ch3.ads \
-   ada/sem_ch4.ads ada/sem_ch5.ads ada/sem_ch6.ads ada/sem_ch7.ads \
-   ada/sem_ch8.ads ada/sem_ch9.ads ada/sem_disp.ads ada/sem_dist.ads \
-   ada/sem_eval.ads ada/sem_eval.adb ada/sem_prag.ads ada/sem_res.ads \
-   ada/sem_type.ads ada/sem_util.ads ada/sem_util.adb ada/sem_warn.ads \
-   ada/sinfo.ads ada/sinfo.adb ada/sinput.ads ada/sinput.adb \
-   ada/snames.ads ada/sprint.ads ada/stand.ads ada/stringt.ads \
-   ada/stringt.adb ada/style.ads ada/styleg.ads ada/styleg.adb \
-   ada/stylesw.ads ada/system.ads ada/s-exctab.ads ada/s-htable.ads \
-   ada/s-htable.adb ada/s-imenne.ads ada/s-memory.ads ada/s-os_lib.ads \
-   ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads \
-   ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
-   ada/s-strhas.ads ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads \
-   ada/s-wchcon.ads ada/table.ads ada/table.adb ada/targparm.ads \
-   ada/tbuild.ads ada/tbuild.adb ada/tree_io.ads ada/ttypes.ads \
-   ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
+   ada/lib-load.ads ada/lib-sort.adb ada/lib-util.ads ada/lib-xref.ads \
+   ada/namet.ads ada/namet.adb ada/nlists.ads ada/nlists.adb ada/nmake.ads \
+   ada/nmake.adb ada/opt.ads ada/output.ads ada/put_alfa.ads \
+   ada/restrict.ads ada/restrict.adb ada/rident.ads ada/rtsfind.ads \
+   ada/rtsfind.adb ada/scans.ads ada/sem.ads ada/sem.adb ada/sem_attr.ads \
+   ada/sem_aux.ads ada/sem_aux.adb ada/sem_cat.ads ada/sem_ch10.ads \
+   ada/sem_ch11.ads ada/sem_ch12.ads ada/sem_ch13.ads ada/sem_ch2.ads \
+   ada/sem_ch3.ads ada/sem_ch4.ads ada/sem_ch5.ads ada/sem_ch6.ads \
+   ada/sem_ch7.ads ada/sem_ch8.ads ada/sem_ch9.ads ada/sem_disp.ads \
+   ada/sem_dist.ads ada/sem_eval.ads ada/sem_eval.adb ada/sem_prag.ads \
+   ada/sem_res.ads ada/sem_type.ads ada/sem_util.ads ada/sem_util.adb \
+   ada/sem_warn.ads ada/sinfo.ads ada/sinfo.adb ada/sinput.ads \
+   ada/sinput.adb ada/snames.ads ada/sprint.ads ada/stand.ads \
+   ada/stringt.ads ada/stringt.adb ada/style.ads ada/styleg.ads \
+   ada/styleg.adb ada/stylesw.ads ada/system.ads ada/s-exctab.ads \
+   ada/s-htable.ads ada/s-htable.adb ada/s-imenne.ads ada/s-memory.ads \
+   ada/s-os_lib.ads ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads \
+   ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
+   ada/s-stoele.adb ada/s-strhas.ads ada/s-string.ads ada/s-traent.ads \
+   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+   ada/targparm.ads ada/tbuild.ads ada/tbuild.adb ada/tree_io.ads \
+   ada/ttypes.ads ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
    ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/urealp.adb \
    ada/validsw.ads ada/widechar.ads 
 
@@ -4599,27 +4648,27 @@
    ada/freeze.ads ada/get_targ.ads ada/gnat.ads ada/g-hesorg.ads \
    ada/g-htable.ads ada/gnatvsn.ads ada/hlo.ads ada/hostparm.ads \
    ada/inline.ads ada/interfac.ads ada/lib.ads ada/lib.adb \
-   ada/lib-list.adb ada/lib-load.ads ada/lib-sort.adb ada/lib-xref.ads \
-   ada/namet.ads ada/namet.adb ada/nlists.ads ada/nlists.adb ada/nmake.ads \
-   ada/opt.ads ada/output.ads ada/par_sco.ads ada/restrict.ads \
-   ada/rident.ads ada/rtsfind.ads ada/scans.ads ada/sem.ads ada/sem.adb \
-   ada/sem_attr.ads ada/sem_aux.ads ada/sem_aux.adb ada/sem_ch10.ads \
-   ada/sem_ch11.ads ada/sem_ch12.ads ada/sem_ch13.ads ada/sem_ch2.ads \
-   ada/sem_ch3.ads ada/sem_ch4.ads ada/sem_ch5.ads ada/sem_ch6.ads \
-   ada/sem_ch7.ads ada/sem_ch8.ads ada/sem_ch9.ads ada/sem_disp.ads \
-   ada/sem_eval.ads ada/sem_prag.ads ada/sem_res.ads ada/sem_type.ads \
-   ada/sem_util.ads ada/sem_util.adb ada/sem_warn.ads ada/sem_warn.adb \
-   ada/sinfo.ads ada/sinfo.adb ada/sinput.ads ada/sinput.adb \
-   ada/snames.ads ada/stand.ads ada/stringt.ads ada/style.ads \
-   ada/styleg.ads ada/styleg.adb ada/stylesw.ads ada/system.ads \
-   ada/s-exctab.ads ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads \
-   ada/s-os_lib.ads ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads \
-   ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
-   ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads \
-   ada/s-wchcon.ads ada/table.ads ada/table.adb ada/targparm.ads \
-   ada/tbuild.ads ada/tree_io.ads ada/ttypes.ads ada/types.ads \
-   ada/uintp.ads ada/uintp.adb ada/uname.ads ada/unchconv.ads \
-   ada/unchdeal.ads ada/urealp.ads ada/widechar.ads 
+   ada/lib-list.adb ada/lib-load.ads ada/lib-sort.adb ada/lib-util.ads \
+   ada/lib-xref.ads ada/namet.ads ada/namet.adb ada/nlists.ads \
+   ada/nlists.adb ada/nmake.ads ada/opt.ads ada/output.ads ada/par_sco.ads \
+   ada/put_alfa.ads ada/restrict.ads ada/rident.ads ada/rtsfind.ads \
+   ada/scans.ads ada/sem.ads ada/sem.adb ada/sem_attr.ads ada/sem_aux.ads \
+   ada/sem_aux.adb ada/sem_ch10.ads ada/sem_ch11.ads ada/sem_ch12.ads \
+   ada/sem_ch13.ads ada/sem_ch2.ads ada/sem_ch3.ads ada/sem_ch4.ads \
+   ada/sem_ch5.ads ada/sem_ch6.ads ada/sem_ch7.ads ada/sem_ch8.ads \
+   ada/sem_ch9.ads ada/sem_disp.ads ada/sem_eval.ads ada/sem_prag.ads \
+   ada/sem_res.ads ada/sem_type.ads ada/sem_util.ads ada/sem_util.adb \
+   ada/sem_warn.ads ada/sem_warn.adb ada/sinfo.ads ada/sinfo.adb \
+   ada/sinput.ads ada/sinput.adb ada/snames.ads ada/stand.ads \
+   ada/stringt.ads ada/style.ads ada/styleg.ads ada/styleg.adb \
+   ada/stylesw.ads ada/system.ads ada/s-exctab.ads ada/s-htable.ads \
+   ada/s-imenne.ads ada/s-memory.ads ada/s-os_lib.ads ada/s-parame.ads \
+   ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads \
+   ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb ada/s-string.ads \
+   ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
+   ada/table.adb ada/targparm.ads ada/tbuild.ads ada/tree_io.ads \
+   ada/ttypes.ads ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
+   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/widechar.ads 
 
 ada/sinfo-cn.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
@@ -4811,10 +4860,10 @@
 
 ada/switch-c.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
-   ada/atree.adb ada/casing.ads ada/debug.ads ada/einfo.ads ada/einfo.adb \
-   ada/fname.ads ada/gnat.ads ada/g-hesorg.ads ada/g-htable.ads \
-   ada/gnatvsn.ads ada/hostparm.ads ada/interfac.ads ada/lib.ads \
-   ada/lib.adb ada/lib-list.adb ada/lib-sort.adb ada/namet.ads \
+   ada/atree.adb ada/casing.ads ada/csets.ads ada/debug.ads ada/einfo.ads \
+   ada/einfo.adb ada/fname.ads ada/gnat.ads ada/g-hesorg.ads \
+   ada/g-htable.ads ada/gnatvsn.ads ada/hostparm.ads ada/interfac.ads \
+   ada/lib.ads ada/lib.adb ada/lib-list.adb ada/lib-sort.adb ada/namet.ads \
    ada/namet.adb ada/nlists.ads ada/nlists.adb ada/opt.ads ada/osint.ads \
    ada/output.ads ada/sinfo.ads ada/sinfo.adb ada/sinput.ads \
    ada/snames.ads ada/stand.ads ada/stringt.ads ada/stylesw.ads \
@@ -4861,31 +4910,31 @@
 
 ada/tbuild.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
-   ada/atree.adb ada/casing.ads ada/debug.ads ada/einfo.ads ada/einfo.adb \
-   ada/elists.ads ada/elists.adb ada/err_vars.ads ada/errout.ads \
-   ada/erroutc.ads ada/fname.ads ada/fname-uf.ads ada/gnat.ads \
-   ada/g-hesorg.ads ada/g-htable.ads ada/hostparm.ads ada/interfac.ads \
-   ada/lib.ads ada/lib.adb ada/lib-list.adb ada/lib-sort.adb ada/namet.ads \
-   ada/namet.adb ada/nlists.ads ada/nlists.adb ada/nmake.ads ada/nmake.adb \
-   ada/opt.ads ada/output.ads ada/restrict.ads ada/restrict.adb \
-   ada/rident.ads ada/sem_aux.ads ada/sem_aux.adb ada/sinfo.ads \
-   ada/sinfo.adb ada/sinput.ads ada/snames.ads ada/stand.ads \
-   ada/stringt.ads ada/stringt.adb ada/system.ads ada/s-exctab.ads \
-   ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads ada/s-os_lib.ads \
-   ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads \
-   ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
-   ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads \
-   ada/table.ads ada/table.adb ada/tbuild.ads ada/tbuild.adb \
-   ada/tree_io.ads ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/urealp.adb \
-   ada/widechar.ads 
+   ada/atree.adb ada/casing.ads ada/csets.ads ada/debug.ads ada/einfo.ads \
+   ada/einfo.adb ada/elists.ads ada/elists.adb ada/err_vars.ads \
+   ada/errout.ads ada/erroutc.ads ada/fname.ads ada/fname-uf.ads \
+   ada/gnat.ads ada/g-hesorg.ads ada/g-htable.ads ada/hostparm.ads \
+   ada/interfac.ads ada/lib.ads ada/lib.adb ada/lib-list.adb \
+   ada/lib-sort.adb ada/namet.ads ada/namet.adb ada/nlists.ads \
+   ada/nlists.adb ada/nmake.ads ada/nmake.adb ada/opt.ads ada/output.ads \
+   ada/restrict.ads ada/restrict.adb ada/rident.ads ada/sem_aux.ads \
+   ada/sem_aux.adb ada/sinfo.ads ada/sinfo.adb ada/sinput.ads \
+   ada/snames.ads ada/stand.ads ada/stringt.ads ada/stringt.adb \
+   ada/system.ads ada/s-exctab.ads ada/s-htable.ads ada/s-imenne.ads \
+   ada/s-memory.ads ada/s-os_lib.ads ada/s-parame.ads ada/s-rident.ads \
+   ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads \
+   ada/s-stoele.ads ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads \
+   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+   ada/tbuild.ads ada/tbuild.adb ada/tree_io.ads ada/types.ads \
+   ada/uintp.ads ada/uintp.adb ada/uname.ads ada/unchconv.ads \
+   ada/unchdeal.ads ada/urealp.ads ada/urealp.adb ada/widechar.ads 
 
 ada/tree_gen.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
-   ada/atree.adb ada/casing.ads ada/debug.ads ada/einfo.ads ada/einfo.adb \
-   ada/elists.ads ada/fname.ads ada/gnat.ads ada/g-hesorg.ads \
-   ada/g-htable.ads ada/hostparm.ads ada/interfac.ads ada/lib.ads \
-   ada/lib.adb ada/lib-list.adb ada/lib-sort.adb ada/namet.ads \
+   ada/atree.adb ada/casing.ads ada/csets.ads ada/debug.ads ada/einfo.ads \
+   ada/einfo.adb ada/elists.ads ada/fname.ads ada/gnat.ads \
+   ada/g-hesorg.ads ada/g-htable.ads ada/hostparm.ads ada/interfac.ads \
+   ada/lib.ads ada/lib.adb ada/lib-list.adb ada/lib-sort.adb ada/namet.ads \
    ada/namet.adb ada/nlists.ads ada/nlists.adb ada/opt.ads ada/osint.ads \
    ada/osint-c.ads ada/output.ads ada/repinfo.ads ada/sem_aux.ads \
    ada/sem_aux.adb ada/sinfo.ads ada/sinfo.adb ada/sinput.ads \
@@ -4975,19 +5024,20 @@
 
 ada/uname.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
-   ada/atree.adb ada/casing.ads ada/debug.ads ada/einfo.ads ada/einfo.adb \
-   ada/fname.ads ada/gnat.ads ada/g-hesorg.ads ada/g-htable.ads \
-   ada/hostparm.ads ada/interfac.ads ada/lib.ads ada/lib.adb \
-   ada/lib-list.adb ada/lib-sort.adb ada/namet.ads ada/namet.adb \
-   ada/nlists.ads ada/nlists.adb ada/opt.ads ada/output.ads ada/sinfo.ads \
-   ada/sinfo.adb ada/sinput.ads ada/sinput.adb ada/snames.ads \
-   ada/stand.ads ada/stringt.ads ada/system.ads ada/s-exctab.ads \
-   ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads ada/s-os_lib.ads \
-   ada/s-parame.ads ada/s-secsta.ads ada/s-stalib.ads ada/s-stoele.ads \
-   ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads \
-   ada/s-wchcon.ads ada/table.ads ada/table.adb ada/tree_io.ads \
-   ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads ada/uname.adb \
-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/widechar.ads 
+   ada/atree.adb ada/casing.ads ada/csets.ads ada/debug.ads ada/einfo.ads \
+   ada/einfo.adb ada/fname.ads ada/gnat.ads ada/g-hesorg.ads \
+   ada/g-htable.ads ada/hostparm.ads ada/interfac.ads ada/lib.ads \
+   ada/lib.adb ada/lib-list.adb ada/lib-sort.adb ada/namet.ads \
+   ada/namet.adb ada/nlists.ads ada/nlists.adb ada/opt.ads ada/output.ads \
+   ada/sinfo.ads ada/sinfo.adb ada/sinput.ads ada/sinput.adb \
+   ada/snames.ads ada/stand.ads ada/stringt.ads ada/system.ads \
+   ada/s-exctab.ads ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads \
+   ada/s-os_lib.ads ada/s-parame.ads ada/s-secsta.ads ada/s-stalib.ads \
+   ada/s-stoele.ads ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads \
+   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+   ada/tree_io.ads ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
+   ada/uname.adb ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads \
+   ada/widechar.ads 
 
 ada/urealp.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
    ada/a-uncdea.ads ada/alloc.ads ada/debug.ads ada/gnat.ads \
