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, 142 insertions, 0 deletions

diff --git a/gcc/objcp/objcp-lang.c b/gcc/objcp/objcp-lang.c
new file mode 100644
index 000000000..fe2be66ff
--- /dev/null
+++ b/gcc/objcp/objcp-lang.c
@@ -0,0 +1,142 @@
+/* Language-dependent hooks for Objective-C++.
+   Copyright 2005, 2007, 2008, 2010, 2011 Free Software Foundation, Inc.
+   Contributed by Ziemowit Laski  <zlaski@apple.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT 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
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "tree.h"
+#include "cp-tree.h"
+#include "c-family/c-common.h"
+#include "c-family/c-objc.h"
+#include "objc-act.h"
+#include "langhooks.h"
+#include "langhooks-def.h"
+#include "target.h"
+#include "cp-objcp-common.h"
+
+enum c_language_kind c_language = clk_objcxx;
+static void objcxx_init_ts (void);
+
+/* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
+   consequently, there should be very few hooks below.  */
+
+#undef LANG_HOOKS_NAME
+#define LANG_HOOKS_NAME "GNU Objective-C++"
+#undef LANG_HOOKS_INIT
+#define LANG_HOOKS_INIT objc_init
+#undef LANG_HOOKS_GIMPLIFY_EXPR 
+#define LANG_HOOKS_GIMPLIFY_EXPR objc_gimplify_expr
+#undef LANG_HOOKS_INIT_TS
+#define LANG_HOOKS_INIT_TS objcxx_init_ts
+
+/* Each front end provides its own lang hook initializer.  */
+struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
+
+/* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
+   there should be very few (if any) routines below.  */
+
+tree
+objcp_tsubst_copy_and_build (tree t, tree args, tsubst_flags_t complain, 
+			     tree in_decl, bool function_p ATTRIBUTE_UNUSED)
+{
+#define RECURSE(NODE)							\
+  tsubst_copy_and_build (NODE, args, complain, in_decl, 		\
+			 /*function_p=*/false,				\
+			 /*integral_constant_expression_p=*/false)
+
+  /* The following two can only occur in Objective-C++.  */
+
+  switch ((int) TREE_CODE (t))
+    {
+    case MESSAGE_SEND_EXPR:
+      return objc_finish_message_expr
+	(RECURSE (TREE_OPERAND (t, 0)),
+	 TREE_OPERAND (t, 1),  /* No need to expand the selector.  */
+	 RECURSE (TREE_OPERAND (t, 2)), NULL);
+
+    case CLASS_REFERENCE_EXPR:
+      return objc_get_class_reference
+	(RECURSE (TREE_OPERAND (t, 0)));
+
+    default:
+      break;
+    }
+
+  /* Fall back to C++ processing.  */
+  return NULL_TREE;
+
+#undef RECURSE
+}
+
+static void
+objcxx_init_ts (void)
+{
+  /* objc decls */
+  tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_NON_COMMON] = 1;
+  tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_NON_COMMON] = 1;
+  tree_contains_struct[KEYWORD_DECL][TS_DECL_NON_COMMON] = 1;
+  tree_contains_struct[PROPERTY_DECL][TS_DECL_NON_COMMON] = 1;
+  
+  tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_WITH_VIS] = 1;
+  tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_WITH_VIS] = 1;
+  tree_contains_struct[KEYWORD_DECL][TS_DECL_WITH_VIS] = 1;
+  tree_contains_struct[PROPERTY_DECL][TS_DECL_WITH_VIS] = 1;
+
+  tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_WRTL] = 1;
+  tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_WRTL] = 1;
+  tree_contains_struct[KEYWORD_DECL][TS_DECL_WRTL] = 1;
+  tree_contains_struct[PROPERTY_DECL][TS_DECL_WRTL] = 1;
+  
+  tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_MINIMAL] = 1;
+  tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_MINIMAL] = 1;
+  tree_contains_struct[KEYWORD_DECL][TS_DECL_MINIMAL] = 1;
+  tree_contains_struct[PROPERTY_DECL][TS_DECL_MINIMAL] = 1;
+  
+  tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_COMMON] = 1;
+  tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_COMMON] = 1;
+  tree_contains_struct[KEYWORD_DECL][TS_DECL_COMMON] = 1;
+  tree_contains_struct[PROPERTY_DECL][TS_DECL_COMMON] = 1;
+  
+  /* C++ decls */
+  tree_contains_struct[NAMESPACE_DECL][TS_DECL_NON_COMMON] = 1;
+  tree_contains_struct[USING_DECL][TS_DECL_NON_COMMON] = 1;
+  tree_contains_struct[TEMPLATE_DECL][TS_DECL_NON_COMMON] = 1;
+
+  tree_contains_struct[NAMESPACE_DECL][TS_DECL_WITH_VIS] = 1;
+  tree_contains_struct[USING_DECL][TS_DECL_WITH_VIS] = 1;
+  tree_contains_struct[TEMPLATE_DECL][TS_DECL_WITH_VIS] = 1;
+
+  tree_contains_struct[NAMESPACE_DECL][TS_DECL_WRTL] = 1;
+  tree_contains_struct[USING_DECL][TS_DECL_WRTL] = 1;
+  tree_contains_struct[TEMPLATE_DECL][TS_DECL_WRTL] = 1;
+  
+  tree_contains_struct[NAMESPACE_DECL][TS_DECL_COMMON] = 1;
+  tree_contains_struct[USING_DECL][TS_DECL_COMMON] = 1;
+  tree_contains_struct[TEMPLATE_DECL][TS_DECL_COMMON] = 1;
+ 
+  tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
+  tree_contains_struct[USING_DECL][TS_DECL_MINIMAL] = 1;
+  tree_contains_struct[TEMPLATE_DECL][TS_DECL_MINIMAL] = 1;
+
+  init_shadowed_var_for_decl ();
+}
+
+#include "gtype-objcp.h"