--- a/gcc/common/common-targhooks.h	Fri Oct 27 22:46:09 2017 +0900
+++ b/gcc/common/common-targhooks.h	Thu Oct 25 07:37:49 2018 +0900
@@ -1,5 +1,5 @@
 /* Default common target hook functions.
-   Copyright (C) 2003-2017 Free Software Foundation, Inc.
+   Copyright (C) 2003-2018 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -28,6 +28,9 @@
 					  struct gcc_options *,
 					  const struct cl_decoded_option *,
 					  location_t);
+extern vec<const char *> default_get_valid_option_values (int, const char *);
+
+extern bool default_option_validate_param (const int, const int);
 
 extern const struct default_options empty_optimization_table[];