extern tree gimple_fold_stmt_to_constant (gimple, tree (*) (tree));
extern tree fold_const_aggregate_ref_1 (tree, tree (*) (tree));
extern tree fold_const_aggregate_ref (tree);
-extern tree gimple_get_virt_method_for_binfo (HOST_WIDE_INT, tree);
+extern tree gimple_get_virt_method_for_binfo (HOST_WIDE_INT, tree,
+ bool *can_refer = NULL);
extern tree gimple_get_virt_method_for_vtable (HOST_WIDE_INT, tree,
- unsigned HOST_WIDE_INT);
+ unsigned HOST_WIDE_INT,
+ bool *can_refer = NULL);
extern bool gimple_val_nonnegative_real_p (tree);
extern tree gimple_fold_indirect_ref (tree);
extern bool arith_code_with_undefined_signed_overflow (tree_code);