1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/tree.h b/gcc/tree.h
index 9f9090a..e000e4e 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -21,6 +21,7 @@ along with GCC; see the file COPYING3.  If not see
 #define GCC_TREE_H
 
 #include "tree-core.h"
+#include "hash-set.h"
 #include "wide-int.h"
 #include "inchash.h"
 
@@ -4334,7 +4335,7 @@ extern void using_eh_for_cleanups (void);
 extern bool using_eh_for_cleanups_p (void);
 extern const char *get_tree_code_name (enum tree_code);
 extern void set_call_expr_flags (tree, int);
-extern tree walk_tree_1 (tree*, walk_tree_fn, void*, struct pointer_set_t*,
+extern tree walk_tree_1 (tree*, walk_tree_fn, void*, hash_set<tree>*,
 			 walk_tree_lh);
 extern tree walk_tree_without_duplicates_1 (tree*, walk_tree_fn, void*,
 					    walk_tree_lh);