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-rw-r--r--activerecord/lib/active_record/railties/controller_runtime.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/railties/controller_runtime.rb b/activerecord/lib/active_record/railties/controller_runtime.rb
index adb3c6c4e6..cc5e83a381 100644
--- a/activerecord/lib/active_record/railties/controller_runtime.rb
+++ b/activerecord/lib/active_record/railties/controller_runtime.rb
@@ -6,6 +6,8 @@ module ActiveRecord
module ControllerRuntime #:nodoc:
extend ActiveSupport::Concern
+ # TODO Change this to private once we've dropped Ruby 2.2 support.
+ # Workaround for Ruby 2.2 "private attribute?" warning.
protected
attr_internal :db_runtime