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
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if you have obtained the source via the command 'git clone',
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1 files changed, 86 insertions, 0 deletions

diff --git a/gcc/ada/s-valuns.ads b/gcc/ada/s-valuns.ads
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                       S Y S T E M . V A L _ U N S                        --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2009, 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.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package contains routines for scanning modular Unsigned
+--  values for use in Text_IO.Modular_IO, and the Value attribute.
+
+with System.Unsigned_Types;
+
+package System.Val_Uns is
+   pragma Pure;
+
+   function Scan_Raw_Unsigned
+     (Str : String;
+      Ptr : not null access Integer;
+      Max : Integer) return System.Unsigned_Types.Unsigned;
+   --  This function scans the string starting at Str (Ptr.all) for a valid
+   --  integer according to the syntax described in (RM 3.5(43)). The substring
+   --  scanned extends no further than Str (Max).  Note: this does not scan
+   --  leading or trailing blanks, nor leading sign.
+   --
+   --  There are three cases for the return:
+   --
+   --  If a valid integer is found, then Ptr.all is updated past the last
+   --  character of the integer.
+   --
+   --  If no valid integer is found, then Ptr.all points either to an initial
+   --  non-digit character, or to Max + 1 if the field is all spaces and the
+   --  exception Constraint_Error is raised.
+   --
+   --  If a syntactically valid integer is scanned, but the value is out of
+   --  range, or, in the based case, the base value is out of range or there
+   --  is an out of range digit, then Ptr.all points past the integer, and
+   --  Constraint_Error is raised.
+   --
+   --  Note: these rules correspond to the requirements for leaving the pointer
+   --  positioned in Text_IO.Get
+   --
+   --  Note: if Str is empty, i.e. if Max is less than Ptr, then this is a
+   --  special case of an all-blank string, and Ptr is unchanged, and hence
+   --  is greater than Max as required in this case.
+
+   function Scan_Unsigned
+     (Str : String;
+      Ptr : not null access Integer;
+      Max : Integer) return System.Unsigned_Types.Unsigned;
+   --  Same as Scan_Raw_Unsigned, except scans optional leading
+   --  blanks, and an optional leading plus sign.
+   --  Note: if a minus sign is present, Constraint_Error will be raised.
+   --  Note: trailing blanks are not scanned.
+
+   function Value_Unsigned
+     (Str : String) return System.Unsigned_Types.Unsigned;
+   --  Used in computing X'Value (Str) where X is a modular integer type whose
+   --  modulus does not exceed the range of System.Unsigned_Types.Unsigned. Str
+   --  is the string argument of the attribute. Constraint_Error is raised if
+   --  the string is malformed, or if the value is out of range.
+
+end System.Val_Uns;