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
files in the upstream repository.

1 files changed, 87 insertions, 0 deletions

diff --git a/gcc/ada/s-traceb.ads b/gcc/ada/s-traceb.ads
new file mode 100644
index 000000000..0119b700a
--- /dev/null
+++ b/gcc/ada/s-traceb.ads
@@ -0,0 +1,87 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                     S Y S T E M . T R A C E B A C K                      --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1999-2009, 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 provides a method for generating a traceback of the current
+--  execution location. The traceback shows the locations of calls in the call
+--  chain, up to either the top or a designated number of levels.
+
+pragma Compiler_Unit;
+
+pragma Polling (Off);
+--  We must turn polling off for this unit, because otherwise we get
+--  elaboration circularities with System.Exception_Tables.
+
+package System.Traceback is
+
+   ----------------
+   -- Call_Chain --
+   ----------------
+
+   procedure Call_Chain
+     (Traceback   : System.Address;
+      Max_Len     : Natural;
+      Len         : out Natural;
+      Exclude_Min : System.Address := System.Null_Address;
+      Exclude_Max : System.Address := System.Null_Address;
+      Skip_Frames : Natural := 1);
+   --  Store up to Max_Len code locations in Traceback, corresponding to
+   --  the current call chain.
+   --
+   --    Traceback is the address of an array of addresses where the
+   --    result will be stored.
+   --
+   --    Max_Len is the length of the Traceback array. If the call chain is
+   --    longer than this, then additional entries are discarded, and the
+   --    traceback is missing some of the highest level entries.
+   --
+   --    Len is the returned number of addresses stored in the Traceback array
+   --
+   --    Exclude_Min/Exclude_Max, if non null, provide a range of addresses
+   --    to ignore from the computation of the traceback.
+   --
+   --    Skip_Frames says how many of the most recent calls should at least
+   --    be excluded from the result, regardless of the exclusion bounds and
+   --    starting with this procedure itself: 1 means exclude the frame for
+   --    this procedure, 2 means 1 + exclude the frame for this procedure's
+   --    caller, ...
+   --
+   --  On return, the Traceback array is filled in, and Len indicates the
+   --  number of stored entries. The first entry is the most recent call,
+   --  and the last entry is the highest level call.
+
+   function C_Call_Chain
+     (Traceback : System.Address;
+      Max_Len   : Natural)
+      return      Natural;
+   pragma Export (C, C_Call_Chain, "system__traceback__c_call_chain");
+   --  Version that can be used directly from C
+
+end System.Traceback;