--- a/include/symcat.h	Fri Feb 12 23:41:23 2010 +0900
+++ b/include/symcat.h	Mon May 24 12:47:05 2010 +0900
@@ -1,6 +1,6 @@
 /* Symbol concatenation utilities.
 
-   Copyright (C) 1998, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2000, 2010 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -23,6 +23,8 @@
 #define CONCAT2(a,b)	 a##b
 #define CONCAT3(a,b,c)	 a##b##c
 #define CONCAT4(a,b,c,d) a##b##c##d
+#define CONCAT5(a,b,c,d,e) a##b##c##d##e
+#define CONCAT6(a,b,c,d,e,f) a##b##c##d##e##f
 #define STRINGX(s) #s
 #else
 /* Note one should never pass extra whitespace to the CONCATn macros,
@@ -32,12 +34,16 @@
 #define CONCAT2(a,b)	 a/**/b
 #define CONCAT3(a,b,c)	 a/**/b/**/c
 #define CONCAT4(a,b,c,d) a/**/b/**/c/**/d
+#define CONCAT5(a,b,c,d,e) a/**/b/**/c/**/d/**/e
+#define CONCAT6(a,b,c,d,e,f) a/**/b/**/c/**/d/**/e/**/f
 #define STRINGX(s) "s"
 #endif
 
 #define XCONCAT2(a,b)     CONCAT2(a,b)
 #define XCONCAT3(a,b,c)   CONCAT3(a,b,c)
 #define XCONCAT4(a,b,c,d) CONCAT4(a,b,c,d)
+#define XCONCAT5(a,b,c,d,e) CONCAT5(a,b,c,d,e)
+#define XCONCAT6(a,b,c,d,e,f) CONCAT6(a,b,c,d,e,f)
 
 /* Note the layer of indirection here is typically used to allow
    stringification of the expansion of macros.  I.e. "#define foo