* object.c (rb_obj_clone): call initialize_clone hook method to

  call initialize_copy.

* object.c (rb_obj_dup): call initialize_dup hook.

* lib/delegate.rb (Delegator#initialize_clone): use new hook to
  implement deep copy.  [ruby-dev:40242]

* lib/delegate.rb (Delegator#initialize_dup): ditto.

* test/test_delegate.rb (TestDelegateClass#test_copy_frozen): add
  a test to ensure #clone copies frozen status.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26620 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 4 deletions

diff --git a/lib/delegate.rb b/lib/delegate.rb
index 2891167fa8..c38aea5947 100644
--- a/lib/delegate.rb
+++ b/lib/delegate.rb
@@ -205,13 +205,14 @@ class Delegator < BasicObject
   end
 
   # :nodoc:
-  def dup
-    self.class.new(__getobj__.dup)
+  def initialize_clone(obj)
+    self.__setobj__(obj.__getobj__.clone)
   end
   # :nodoc:
-  def clone
-    self.class.new(__getobj__.clone)
+  def initialize_dup(obj)
+    self.__setobj__(obj.__getobj__.dup)
   end
+  private :initialize_clone, :initialize_dup
 
   # Freeze self and target at once.
   def freeze