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, 55 insertions, 0 deletions

diff --git a/gcc/ada/a-ngcefu.ads b/gcc/ada/a-ngcefu.ads
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--            ADA.NUMERICS.GENERIC_COMPLEX_ELEMENTARY_FUNCTIONS             --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT.  In accordance with the copyright of that document, you can freely --
+-- copy and modify this specification,  provided that if you redistribute a --
+-- modified version,  any changes that you have made are clearly indicated. --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with Ada.Numerics.Generic_Complex_Types;
+generic
+   with package Complex_Types is new Ada.Numerics.Generic_Complex_Types (<>);
+   use Complex_Types;
+
+package Ada.Numerics.Generic_Complex_Elementary_Functions is
+   pragma Pure;
+
+   function Sqrt (X : Complex)   return Complex;
+
+   function Log  (X : Complex)   return Complex;
+
+   function Exp  (X : Complex)   return Complex;
+   function Exp  (X : Imaginary) return Complex;
+
+   function "**" (Left : Complex;   Right : Complex)   return Complex;
+   function "**" (Left : Complex;   Right : Real'Base) return Complex;
+   function "**" (Left : Real'Base; Right : Complex)   return Complex;
+
+   function Sin (X : Complex) return Complex;
+   function Cos (X : Complex) return Complex;
+   function Tan (X : Complex) return Complex;
+   function Cot (X : Complex) return Complex;
+
+   function Arcsin (X : Complex) return Complex;
+   function Arccos (X : Complex) return Complex;
+   function Arctan (X : Complex) return Complex;
+   function Arccot (X : Complex) return Complex;
+
+   function Sinh (X : Complex) return Complex;
+   function Cosh (X : Complex) return Complex;
+   function Tanh (X : Complex) return Complex;
+   function Coth (X : Complex) return Complex;
+
+   function Arcsinh (X : Complex) return Complex;
+   function Arccosh (X : Complex) return Complex;
+   function Arctanh (X : Complex) return Complex;
+   function Arccoth (X : Complex) return Complex;
+
+end Ada.Numerics.Generic_Complex_Elementary_Functions;