1 files changed, 4 insertions, 6 deletions
diff --git a/error.c b/error.c
index 375c2ff5a7..81684a112d 100644
--- a/error.c
+++ b/error.c
@@ -541,10 +541,8 @@ rb_check_type(VALUE x, int t)
 int
 rb_typeddata_inherited_p(const rb_data_type_t *child, const rb_data_type_t *parent)
 {
-    while (child) {
-	if (child == parent) return 1;
-	child = child->parent;
-    }
+    rb_warn("rb_typeddata_inherited_p() is deprecated");
+    if (child == parent) return 1;
     return 0;
 }
 
@@ -552,7 +550,7 @@ int
 rb_typeddata_is_kind_of(VALUE obj, const rb_data_type_t *data_type)
 {
     if (!RB_TYPE_P(obj, T_DATA) ||
-	!RTYPEDDATA_P(obj) || !rb_typeddata_inherited_p(RTYPEDDATA_TYPE(obj), data_type)) {
+	!RTYPEDDATA_P(obj) || RTYPEDDATA_TYPE(obj) != data_type) {
 	return 0;
     }
     return 1;
@@ -572,7 +570,7 @@ rb_check_typeddata(VALUE obj, const rb_data_type_t *data_type)
 	etype = rb_obj_classname(obj);
 	rb_raise(rb_eTypeError, mesg, etype, data_type->wrap_struct_name);
     }
-    else if (!rb_typeddata_inherited_p(RTYPEDDATA_TYPE(obj), data_type)) {
+    else if (RTYPEDDATA_TYPE(obj) != data_type) {
 	etype = RTYPEDDATA_TYPE(obj)->wrap_struct_name;
 	rb_raise(rb_eTypeError, mesg, etype, data_type->wrap_struct_name);
     }