obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
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1 files changed, 129 insertions, 0 deletions

diff --git a/gcc/ada/sinput-l.ads b/gcc/ada/sinput-l.ads
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                             S I N P U T . L                              --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2008, 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 child package contains the routines used to actually load a source
+--  file and create entries in the source file table. It also contains the
+--  routines to create virtual entries for instantiations. This is separated
+--  off into a child package to avoid a dependence of Sinput on Osint which
+--  would cause trouble in the tree read/write routines.
+
+package Sinput.L is
+
+   ------------------------------------------
+   -- Subprograms for Loading Source Files --
+   ------------------------------------------
+
+   function Load_Source_File (N : File_Name_Type) return Source_File_Index;
+   --  Given a source file name, returns the index of the corresponding entry
+   --  in the source file table. If the file is not currently loaded, then
+   --  this is the call that causes the source file to be read and an entry
+   --  made in the table. A new entry in the table has the file name and time
+   --  stamp entries set and the Casing entries set to Unknown. Version is set
+   --  to all blanks, and the lines table is initialized but only the first
+   --  entry is set (and Last_Line is set to 1). If the given source file
+   --  cannot be opened, then the value returned is No_Source_File.
+
+   function Load_Config_File (N : File_Name_Type) return Source_File_Index;
+   --  Similar to Load_Source_File, except that the file name is always
+   --  interpreted in the context of the current working directory.
+   --  The file is never preprocessed.
+
+   function Load_Definition_File
+     (N : File_Name_Type) return Source_File_Index;
+   --  Loads preprocessing definition file. Similar to Load_Source_File
+   --  except that this file is not itself preprocessed.
+
+   function Load_Preprocessing_Data_File
+     (N : File_Name_Type) return Source_File_Index;
+   --  Loads preprocessing data file. Similar to Load_Source_File except
+   --  that this file is not itself preprocessed.
+
+   procedure Complete_Source_File_Entry;
+   --  Called on completing the parsing of a source file. This call completes
+   --  the source file table entry for the current source file.
+
+   function Source_File_Is_No_Body (X : Source_File_Index) return Boolean;
+   --  Returns true if the designated source file contains pragma No_Body;
+   --  and no other tokens. If the source file contains anything other than
+   --  this sequence of three tokens, then False is returned.
+
+   function Source_File_Is_Subunit (X : Source_File_Index) return Boolean;
+   --  This function determines if a source file represents a subunit. It
+   --  works by scanning for the first compilation unit token, and returning
+   --  True if it is the token SEPARATE. It will return False otherwise,
+   --  meaning that the file cannot possibly be a legal subunit. This
+   --  function does NOT do a complete parse of the file, or build a
+   --  tree. It is used in the main driver in the check for bad bodies.
+
+   -------------------------------------------------
+   -- Subprograms for Dealing With Instantiations --
+   -------------------------------------------------
+
+   type Sloc_Adjustment is private;
+   --  Type returned by Create_Instantiation_Source for use in subsequent
+   --  calls to Adjust_Instantiation_Sloc.
+
+   procedure Create_Instantiation_Source
+     (Inst_Node    : Entity_Id;
+      Template_Id  : Entity_Id;
+      Inlined_Body : Boolean;
+      A            : out Sloc_Adjustment);
+   --  This procedure creates the source table entry for an instantiation.
+   --  Inst_Node is the instantiation node, and Template_Id is the defining
+   --  identifier of the generic declaration or body unit as appropriate.
+   --  A is set to an adjustment factor to be used in subsequent calls to
+   --  Adjust_Instantiation_Sloc. The instantiation mechanism is also used
+   --  for inlined function and procedure calls. The parameter Inlined_Body
+   --  is set to True in such cases, and False for a generic instantiation.
+   --  This is used for generating error messages that distinguish these
+   --  two cases, otherwise the two cases are handled identically.
+
+   procedure Adjust_Instantiation_Sloc (N : Node_Id; A : Sloc_Adjustment);
+   --  The instantiation tree is created by copying the tree of the generic
+   --  template (including the original Sloc values), and then applying
+   --  Adjust_Instantiation_Sloc to each copied node to adjust the Sloc
+   --  to reference the source entry for the instantiation.
+
+private
+
+   type Sloc_Adjustment is record
+      Adjust : Source_Ptr;
+      --  Adjustment factor. To be added to source location values in the
+      --  source table entry for the template to get corresponding sloc
+      --  values for the instantiation image of the template. This is not
+      --  really a Source_Ptr value, but rather an offset, but it is more
+      --  convenient to represent it as a Source_Ptr value and this is a
+      --  private type anyway.
+
+      Lo, Hi : Source_Ptr;
+      --  Lo and hi values to which adjustment factor can legitimately
+      --  be applied, used to ensure that no incorrect adjustments are
+      --  made. Really it is a bug if anyone ever tries to adjust outside
+      --  this range, but since we are only doing this anyway for getting
+      --  better error messages, it is not critical
+
+   end record;
+
+end Sinput.L;