--- a/gcc/diagnostic-core.h	Fri Oct 27 22:46:09 2017 +0900
+++ b/gcc/diagnostic-core.h	Thu Oct 25 07:37:49 2018 +0900
@@ -1,7 +1,7 @@
 /* Declarations of core diagnostic functionality for code that does
    not need to deal with diagnostic contexts or diagnostic info
    structures.
-   Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   Copyright (C) 1998-2018 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -36,6 +36,15 @@
   DK_POP
 } diagnostic_t;
 
+/* RAII-style class for grouping related diagnostics.  */
+
+class auto_diagnostic_group
+{
+ public:
+  auto_diagnostic_group ();
+  ~auto_diagnostic_group ();
+};
+
 extern const char *progname;
 
 extern const char *trim_filename (const char *);
@@ -59,36 +68,39 @@
      ATTRIBUTE_GCC_DIAG(1,2) ATTRIBUTE_NORETURN;
 /* Pass one of the OPT_W* from options.h as the first parameter.  */
 extern bool warning (int, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3);
-extern bool warning_n (location_t, int, int, const char *, const char *, ...)
+extern bool warning_n (location_t, int, unsigned HOST_WIDE_INT,
+		       const char *, const char *, ...)
     ATTRIBUTE_GCC_DIAG(4,6) ATTRIBUTE_GCC_DIAG(5,6);
+extern bool warning_n (rich_location *, int, unsigned HOST_WIDE_INT,
+		       const char *, const char *, ...)
+    ATTRIBUTE_GCC_DIAG(4, 6) ATTRIBUTE_GCC_DIAG(5, 6);
 extern bool warning_at (location_t, int, const char *, ...)
     ATTRIBUTE_GCC_DIAG(3,4);
-extern bool warning_at_rich_loc (rich_location *, int, const char *, ...)
+extern bool warning_at (rich_location *, int, const char *, ...)
     ATTRIBUTE_GCC_DIAG(3,4);
-extern bool warning_at_rich_loc_n (rich_location *, int, int, const char *,
-				  const char *, ...)
-    ATTRIBUTE_GCC_DIAG(4, 6) ATTRIBUTE_GCC_DIAG(5, 6);
 extern void error (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2);
-extern void error_n (location_t, int, const char *, const char *, ...)
+extern void error_n (location_t, unsigned HOST_WIDE_INT, const char *,
+		     const char *, ...)
     ATTRIBUTE_GCC_DIAG(3,5) ATTRIBUTE_GCC_DIAG(4,5);
 extern void error_at (location_t, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3);
-extern void error_at_rich_loc (rich_location *, const char *, ...)
+extern void error_at (rich_location *, const char *, ...)
   ATTRIBUTE_GCC_DIAG(2,3);
 extern void fatal_error (location_t, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3)
      ATTRIBUTE_NORETURN;
 /* Pass one of the OPT_W* from options.h as the second parameter.  */
 extern bool pedwarn (location_t, int, const char *, ...)
      ATTRIBUTE_GCC_DIAG(3,4);
-extern bool pedwarn_at_rich_loc (rich_location *, int, const char *, ...)
+extern bool pedwarn (rich_location *, int, const char *, ...)
      ATTRIBUTE_GCC_DIAG(3,4);
 extern bool permerror (location_t, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3);
-extern bool permerror_at_rich_loc (rich_location *, const char *,
+extern bool permerror (rich_location *, const char *,
 				   ...) ATTRIBUTE_GCC_DIAG(2,3);
 extern void sorry (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2);
+extern void sorry_at (location_t, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3);
 extern void inform (location_t, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3);
-extern void inform_at_rich_loc (rich_location *, const char *,
-				...) ATTRIBUTE_GCC_DIAG(2,3);
-extern void inform_n (location_t, int, const char *, const char *, ...)
+extern void inform (rich_location *, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3);
+extern void inform_n (location_t, unsigned HOST_WIDE_INT, const char *,
+		      const char *, ...)
     ATTRIBUTE_GCC_DIAG(3,5) ATTRIBUTE_GCC_DIAG(4,5);
 extern void verbatim (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2);
 extern bool emit_diagnostic (diagnostic_t, location_t, int,