--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/go/go-gcc-diagnostics.cc	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,61 @@
+// go-gcc-diagnostics.cc -- GCC implementation of go diagnostics interface.
+// Copyright (C) 2016-2017 Free Software Foundation, Inc.
+// Contributed by Than McIntosh, Google.
+
+// 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 "go-system.h"
+#include "go-diagnostics.h"
+
+void
+go_be_error_at(const Location location, const std::string& errmsg)
+{
+  source_location gcc_loc = location.gcc_location();
+  error_at(gcc_loc, "%s", errmsg.c_str());
+}
+
+
+void
+go_be_warning_at(const Location location,
+                 int opt, const std::string& warningmsg)
+{
+  source_location gcc_loc = location.gcc_location();
+  warning_at(gcc_loc, opt, "%s", warningmsg.c_str());
+}
+
+void
+go_be_fatal_error(const Location location,
+                  const std::string& fatalmsg)
+{
+  source_location gcc_loc = location.gcc_location();
+  fatal_error(gcc_loc, "%s", fatalmsg.c_str());
+}
+
+void
+go_be_inform(const Location location,
+             const std::string& infomsg)
+{
+  source_location gcc_loc = location.gcc_location();
+  inform(gcc_loc, "%s", infomsg.c_str());
+}
+
+void
+go_be_get_quotechars(const char** open_qu, const char** close_qu)
+{
+  *open_qu = open_quote;
+  *close_qu = close_quote;
+}