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-rw-r--r--activerecord/lib/active_record/locking/optimistic.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/locking/optimistic.rb b/activerecord/lib/active_record/locking/optimistic.rb
index 626fe40103..55776a91c0 100644
--- a/activerecord/lib/active_record/locking/optimistic.rb
+++ b/activerecord/lib/active_record/locking/optimistic.rb
@@ -150,6 +150,7 @@ module ActiveRecord
# Quote the column name used for optimistic locking.
def quoted_locking_column
+ ActiveSupport::Deprecation.warn "ActiveRecord::Base.quoted_locking_column is deprecated and will be removed in Rails 4.2 or later."
connection.quote_column_name(locking_column)
end