1 files changed, 17 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/hash_with_indifferent_access.rb b/activesupport/lib/active_support/hash_with_indifferent_access.rb
index 79e7feaf47..8638667082 100644
--- a/activesupport/lib/active_support/hash_with_indifferent_access.rb
+++ b/activesupport/lib/active_support/hash_with_indifferent_access.rb
@@ -316,4 +316,20 @@ module ActiveSupport
   end
 end
 
-HashWithIndifferentAccess = ActiveSupport::HashWithIndifferentAccess
+class HashWithIndifferentAccess < ActiveSupport::HashWithIndifferentAccess
+  def initialize(*)
+    ActiveSupport::Deprecation.warn "HashWithIndifferentAccess is deprecated!" \
+                                    "Use ActiveSupport::HashWithIndifferentAccess instead."
+    super
+  end
+
+  def self.inherited(*)
+    ActiveSupport::Deprecation.warn "HashWithIndifferentAccess is deprecated!" \
+                                    "Use ActiveSupport::HashWithIndifferentAccess instead."
+    super
+  end
+
+  def encode_with(coder)
+    coder.represent_object(nil, ActiveSupport::HashWithIndifferentAccess.new(self))
+  end
+end