didnt fix it

Author: sampersand

core/class.rbs

@@ -124,7 +124,7 @@ class Class < Module
   #     TrueClass.attached_object                  #=> TypeError: `TrueClass' is not a singleton class
   #     NilClass.attached_object                   #=> TypeError: `NilClass' is not a singleton class
   #
-  def attached_object: () -> instance
+  def attached_object: () -> untyped
 
   # <!--
   #   rdoc-file=object.c

test/stdlib/Class_test.rb

@@ -39,13 +39,13 @@ def test_initialize
     assert_send_type "() -> void",
                      Class.allocate, :initialize
 
-    assert_send_type "() { (Class) [self: untyped] -> void } -> void",
+    assert_send_type "() { (Class) [self: Class] -> void } -> void",
                      Class.allocate, :initialize do end
 
     assert_send_type "(Class) -> void",
                      Class.allocate, :initialize, String
 
-    assert_send_type "(Class) { (Class) [self: untyped] -> void } -> void",
+    assert_send_type "(Class) { (Class) [self: Class] -> void } -> void",
                      Class.allocate, :initialize, String do end
   end
 
@@ -62,8 +62,8 @@ def test_subclasses
   end
 
   def test_attached_object
-    assert_send_type "() -> singleton(String)",
-                     String.singleton_class, :attached_object
+    assert_send_type "() -> untyped",
+                     Subclass.new.singleton_class, :attached_object
   end
 
   def test_inherited