extern int hook_int_rtx_bool_0 (rtx, bool);
extern int hook_int_size_t_constcharptr_int_0 (size_t, const char *, int);
+extern tree hook_tree_const_tree_null (const_tree);
+
extern tree hook_tree_tree_tree_null (tree, tree);
extern tree hook_tree_tree_tree_tree_null (tree, tree, tree);
extern tree hook_tree_tree_tree_tree_3rd_identity (tree, tree, tree);