--- a/gcc/c/c-parser.h	Thu Oct 25 07:37:49 2018 +0900
+++ b/gcc/c/c-parser.h	Thu Feb 13 11:34:05 2020 +0900
@@ -1,5 +1,5 @@
 /* Declarations for the parser for C and Objective-C.
-   Copyright (C) 1987-2018 Free Software Foundation, Inc.
+   Copyright (C) 1987-2020 Free Software Foundation, Inc.
 
    Parser actions based on the old Bison parser; structure somewhat
    influenced by and fragments based on the C++ parser.
@@ -185,11 +185,13 @@
   return c_parser_peek_token (parser)->keyword == keyword;
 }
 
+struct c_expr c_parser_string_literal (c_parser *, bool, bool);
 extern struct c_declarator *
 c_parser_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind,
 		     bool *seen_id);
 extern void c_parser_declspecs (c_parser *, struct c_declspecs *, bool, bool,
-				bool, bool, bool, enum c_lookahead_kind);
+				bool, bool, bool, bool, bool,
+				enum c_lookahead_kind);
 extern struct c_type_name *c_parser_type_name (c_parser *, bool = false);
 
 #endif