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diff --git a/gnu/gcc/include/splay-tree.h b/gnu/gcc/include/splay-tree.h
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+/* A splay-tree datatype.  
+   Copyright 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
+   Contributed by Mark Mitchell (mark@markmitchell.com).
+
+This file is part of GCC.
+   
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING.  If not, write to
+the Free Software Foundation, 51 Franklin Street - Fifth Floor,
+Boston, MA 02110-1301, USA.  */
+
+/* For an easily readable description of splay-trees, see:
+
+     Lewis, Harry R. and Denenberg, Larry.  Data Structures and Their
+     Algorithms.  Harper-Collins, Inc.  1991.  
+
+   The major feature of splay trees is that all basic tree operations
+   are amortized O(log n) time for a tree with n nodes.  */
+
+#ifndef _SPLAY_TREE_H
+#define _SPLAY_TREE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#include "ansidecl.h"
+
+#ifndef GTY
+#define GTY(X)
+#endif
+
+/* Use typedefs for the key and data types to facilitate changing
+   these types, if necessary.  These types should be sufficiently wide
+   that any pointer or scalar can be cast to these types, and then
+   cast back, without loss of precision.  */
+typedef unsigned long int splay_tree_key;
+typedef unsigned long int splay_tree_value;
+
+/* Forward declaration for a node in the tree.  */
+typedef struct splay_tree_node_s *splay_tree_node;
+
+/* The type of a function which compares two splay-tree keys.  The
+   function should return values as for qsort.  */
+typedef int (*splay_tree_compare_fn) (splay_tree_key, splay_tree_key);
+
+/* The type of a function used to deallocate any resources associated
+   with the key.  */
+typedef void (*splay_tree_delete_key_fn) (splay_tree_key);
+
+/* The type of a function used to deallocate any resources associated
+   with the value.  */
+typedef void (*splay_tree_delete_value_fn) (splay_tree_value);
+
+/* The type of a function used to iterate over the tree.  */
+typedef int (*splay_tree_foreach_fn) (splay_tree_node, void*);
+
+/* The type of a function used to allocate memory for tree root and
+   node structures.  The first argument is the number of bytes needed;
+   the second is a data pointer the splay tree functions pass through
+   to the allocator.  This function must never return zero.  */
+typedef void *(*splay_tree_allocate_fn) (int, void *);
+
+/* The type of a function used to free memory allocated using the
+   corresponding splay_tree_allocate_fn.  The first argument is the
+   memory to be freed; the latter is a data pointer the splay tree
+   functions pass through to the freer.  */
+typedef void (*splay_tree_deallocate_fn) (void *, void *);
+
+/* The nodes in the splay tree.  */
+struct splay_tree_node_s GTY(())
+{
+  /* The key.  */
+  splay_tree_key GTY ((use_param1)) key;
+
+  /* The value.  */
+  splay_tree_value GTY ((use_param2)) value;
+
+  /* The left and right children, respectively.  */
+  splay_tree_node GTY ((use_params)) left;
+  splay_tree_node GTY ((use_params)) right;
+};
+
+/* The splay tree itself.  */
+struct splay_tree_s GTY(())
+{
+  /* The root of the tree.  */
+  splay_tree_node GTY ((use_params)) root;
+
+  /* The comparision function.  */
+  splay_tree_compare_fn comp;
+
+  /* The deallocate-key function.  NULL if no cleanup is necessary.  */
+  splay_tree_delete_key_fn delete_key;
+
+  /* The deallocate-value function.  NULL if no cleanup is necessary.  */
+  splay_tree_delete_value_fn delete_value;
+
+  /* Allocate/free functions, and a data pointer to pass to them.  */
+  splay_tree_allocate_fn allocate;
+  splay_tree_deallocate_fn deallocate;
+  void * GTY((skip)) allocate_data;
+
+};
+typedef struct splay_tree_s *splay_tree;
+
+extern splay_tree splay_tree_new        (splay_tree_compare_fn,
+                                         splay_tree_delete_key_fn,
+                                         splay_tree_delete_value_fn);
+extern splay_tree splay_tree_new_with_allocator (splay_tree_compare_fn,
+                                                 splay_tree_delete_key_fn,
+					        splay_tree_delete_value_fn,
+                                                 splay_tree_allocate_fn,
+                                                 splay_tree_deallocate_fn,
+                                                 void *);
+extern void splay_tree_delete           (splay_tree);
+extern splay_tree_node splay_tree_insert (splay_tree,
+                                          splay_tree_key,
+                                          splay_tree_value);
+extern void splay_tree_remove	(splay_tree, splay_tree_key);
+extern splay_tree_node splay_tree_lookup (splay_tree, splay_tree_key);
+extern splay_tree_node splay_tree_predecessor (splay_tree, splay_tree_key);
+extern splay_tree_node splay_tree_successor (splay_tree, splay_tree_key);
+extern splay_tree_node splay_tree_max (splay_tree);
+extern splay_tree_node splay_tree_min (splay_tree);
+extern int splay_tree_foreach (splay_tree, splay_tree_foreach_fn, void*);
+extern int splay_tree_compare_ints (splay_tree_key, splay_tree_key);
+extern int splay_tree_compare_pointers (splay_tree_key,	splay_tree_key);
+					       
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _SPLAY_TREE_H */