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
directory might differ from line-endings of the respective
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1 files changed, 107 insertions, 0 deletions

diff --git a/gcc/ada/a-numaux-darwin.ads b/gcc/ada/a-numaux-darwin.ads
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                     A D A . N U M E R I C S . A U X                      --
+--                                                                          --
+--                                 S p e c                                  --
+--                          (Apple OS X Version)                            --
+--                                                                          --
+--          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 version is for use with normal Unix math functions, except for
+--  sine/cosine which have been implemented directly in Ada to get
+--  the required accuracy in OS X.  Alternative packages are used
+--  on OpenVMS (different import names), VxWorks (no need for the
+--  -lm Linker_Options), and on the x86 (where we have two
+--  versions one using inline ASM, and one importing from the C long
+--  routines that take 80-bit arguments).
+
+package Ada.Numerics.Aux is
+   pragma Pure;
+
+   pragma Linker_Options ("-lm");
+
+   type Double is digits 15;
+   --  Type Double is the type used to call the C routines
+
+   --  The following functions have been implemented in Ada, since
+   --  the OS X math library didn't meet accuracy requirements for
+   --  argument reduction. The implementation here has been tailored
+   --  to match Ada strict mode Numerics requirements while maintaining
+   --  maximum efficiency.
+   function Sin (X : Double) return Double;
+   pragma Inline (Sin);
+
+   function Cos (X : Double) return Double;
+   pragma Inline (Cos);
+
+   --  We import these functions directly from C. Note that we label them
+   --  all as pure functions, because indeed all of them are in fact pure!
+
+   function Tan (X : Double) return Double;
+   pragma Import (C, Tan, "tan");
+   pragma Pure_Function (Tan);
+
+   function Exp (X : Double) return Double;
+   pragma Import (C, Exp, "exp");
+   pragma Pure_Function (Exp);
+
+   function Sqrt (X : Double) return Double;
+   pragma Import (C, Sqrt, "sqrt");
+   pragma Pure_Function (Sqrt);
+
+   function Log (X : Double) return Double;
+   pragma Import (C, Log, "log");
+   pragma Pure_Function (Log);
+
+   function Acos (X : Double) return Double;
+   pragma Import (C, Acos, "acos");
+   pragma Pure_Function (Acos);
+
+   function Asin (X : Double) return Double;
+   pragma Import (C, Asin, "asin");
+   pragma Pure_Function (Asin);
+
+   function Atan (X : Double) return Double;
+   pragma Import (C, Atan, "atan");
+   pragma Pure_Function (Atan);
+
+   function Sinh (X : Double) return Double;
+   pragma Import (C, Sinh, "sinh");
+   pragma Pure_Function (Sinh);
+
+   function Cosh (X : Double) return Double;
+   pragma Import (C, Cosh, "cosh");
+   pragma Pure_Function (Cosh);
+
+   function Tanh (X : Double) return Double;
+   pragma Import (C, Tanh, "tanh");
+   pragma Pure_Function (Tanh);
+
+   function Pow (X, Y : Double) return Double;
+   pragma Import (C, Pow, "pow");
+   pragma Pure_Function (Pow);
+
+end Ada.Numerics.Aux;