diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h
index 55b0f1b..30b1e98 100644
--- a/libcpp/include/cpplib.h
+++ b/libcpp/include/cpplib.h
@@ -1,6 +1,6 @@
 /* Definitions for CPP library.
    Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-   2004, 2005, 2007, 2008, 2009, 2010
+   2004, 2005, 2007, 2008, 2009, 2010, 2011
    Free Software Foundation, Inc.
    Written by Per Bothner, 1994-95.
 
@@ -315,6 +315,10 @@
   /* Nonzero means process u/U prefix literals (UTF-16/32).  */
   unsigned char uliterals;
 
+  /* Nonzero means process r/R rax strings.  If this is set, uliterals
+     must be set as well.  */
+  unsigned char rliterals;
+
   /* Nonzero means print names of header files (-H).  */
   unsigned char print_include_names;