--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/tree-diagnostic.h	Mon May 24 12:47:05 2010 +0900
@@ -0,0 +1,56 @@
+/* Various declarations for language-independent diagnostics
+   subroutines that are only for use in the compilers proper and not
+   the driver or other programs.
+   Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+   2010, Free Software Foundation, Inc.
+
+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/>.  */
+
+#ifndef GCC_TREE_DIAGNOSTIC_H
+#define GCC_TREE_DIAGNOSTIC_H
+
+/* TREE_BLOCK if the diagnostic is to be reported in some inline
+   function inlined into other function, otherwise NULL.  */
+#define diagnostic_abstract_origin(DI)		\
+  ((tree) diagnostic_info_auxiliary_data (DI))
+
+/* Function of last diagnostic message; more generally, function such
+   that if next diagnostic message is in it then we don't have to
+   mention the function name.  */
+#define diagnostic_last_function(DC)			\
+  ((tree) diagnostic_context_auxiliary_data (DC))
+
+/* True if the last function in which a diagnostic was reported is
+   different from the current one.  */
+#define diagnostic_last_function_changed(DC, DI)			\
+  (diagnostic_last_function (DC) != (diagnostic_abstract_origin (DI)	\
+				     ? diagnostic_abstract_origin (DI)	\
+				     : current_function_decl))
+
+/* Remember the current function as being the last one in which we report
+   a diagnostic.  */
+#define diagnostic_set_last_function(DC, DI)		\
+  diagnostic_context_auxiliary_data (DC)		\
+    = (((DI) && diagnostic_abstract_origin (DI))	\
+       ? diagnostic_abstract_origin (DI)		\
+       : current_function_decl)
+
+void default_tree_diagnostic_starter (diagnostic_context *, diagnostic_info *);
+extern void diagnostic_report_current_function (diagnostic_context *,
+						diagnostic_info *);
+
+#endif /* ! GCC_TREE_DIAGNOSTIC_H */