--- a/gcc/ggc.h	Sun Feb 07 18:28:00 2010 +0900
+++ b/gcc/ggc.h	Fri Feb 12 23:39:51 2010 +0900
@@ -1,6 +1,7 @@
 /* Garbage collection for the GNU compiler.
-   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
-   Free Software Foundation, Inc.
+
+   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007,
+   2008, 2009 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -225,7 +226,7 @@
 extern void *ggc_calloc (size_t, size_t);
 /* Free a block.  To be used when known for certain it's not reachable.  */
 extern void ggc_free (void *);
- 
+
 extern void ggc_record_overhead (size_t, size_t, void * MEM_STAT_DECL);
 extern void ggc_free_overhead (void *);
 extern void ggc_prune_overhead_list (void);
@@ -270,6 +271,14 @@
    function is called, not during allocations.  */
 extern void ggc_collect	(void);
 
+/* Register an additional root table.  This can be useful for some
+   plugins.  Does nothing if the passed pointer is NULL. */
+extern void ggc_register_root_tab (const struct ggc_root_tab *);
+
+/* Register an additional cache table.  This can be useful for some
+   plugins.  Does nothing if the passed pointer is NULL. */
+extern void ggc_register_cache_tab (const struct ggc_cache_tab *);
+
 /* Return the number of bytes allocated at the indicated address.  */
 extern size_t ggc_get_size (const void *);