Revert self-referencing finalizer warning [Feature #15974]

It has caused CI failures.

* d0cd0866d82a58933e5dccd073c753c0c2ad4eb5

  Disable GC during rb_objspace_reachable_object_p

* 89cef1c56b3a0f9c5e6ccc22a5044477a4fd16c1

  Version guard for [Feature #15974]

* 796eeb6339952d92ae1b353d450c7883e589852d.

  Fix up [Feature #15974]

* 928260c2a613bbdd4402c300e0bf86ae7562e52a.

  Warn in verbose mode on defining a finalizer that captures the object

1 files changed, 3 insertions, 29 deletions

diff --git a/test/ruby/test_objectspace.rb b/test/ruby/test_objectspace.rb
index 9007e05206..c352b75b70 100644
--- a/test/ruby/test_objectspace.rb
+++ b/test/ruby/test_objectspace.rb
@@ -56,7 +56,7 @@ End
   end
 
   def test_finalizer
-    assert_in_out_err(["-W0", "-e", <<-END], "", %w(:ok :ok :ok :ok))
+    assert_in_out_err(["-e", <<-END], "", %w(:ok :ok :ok :ok), [])
       a = []
       ObjectSpace.define_finalizer(a) { p :ok }
       b = a.dup
@@ -76,8 +76,8 @@ End
       ObjectSpace.define_finalizer([], fin)
       CODE
     end
-    assert_in_out_err(["-W0"], code[""], ["finalized"])
-    assert_in_out_err(["-W0"], code["private "], ["finalized"])
+    assert_in_out_err([], code[""], ["finalized"])
+    assert_in_out_err([], code["private "], ["finalized"])
     c = EnvUtil.labeled_class("C\u{3042}").new
     o = Object.new
     assert_raise_with_message(ArgumentError, /C\u{3042}/) {
@@ -131,32 +131,6 @@ End
     END
   end
 
-  def test_self_referencing_finalizer
-    assert_separately(["-w"], "#{<<~"begin;"}\n#{<<~'end;'}")
-    begin;
-      obj = +"Test"
-      handler = proc {puts "finalized"}
-      assert_warning(/object is reachable from finalizer/) do
-        ObjectSpace.define_finalizer(obj, handler)
-      end
-    end;
-  end
-
-  def test_indirectly_self_referencing_finalizer
-    assert_separately(["-w"], "#{<<~"begin;"}\n#{<<~'end;'}")
-    begin;
-      def scoped(indirect)
-        proc {puts "finalized"}
-      end
-      obj = +"Test"
-      indirect = [obj]
-      handler = scoped(indirect)
-      assert_warning(/object is reachable from finalizer/) do
-        ObjectSpace.define_finalizer(obj, handler)
-      end
-    end;
-  end
-
   def test_each_object
     klass = Class.new
     new_obj = klass.new