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-rw-r--r--activerecord/lib/active_record/attribute_set.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/attribute_set.rb b/activerecord/lib/active_record/attribute_set.rb
index 66b278219a..01f9d815d5 100644
--- a/activerecord/lib/active_record/attribute_set.rb
+++ b/activerecord/lib/active_record/attribute_set.rb
@@ -64,7 +64,7 @@ module ActiveRecord
end
def deep_dup
- dup.tap do |copy|
+ self.class.allocate.tap do |copy|
copy.instance_variable_set(:@attributes, attributes.deep_dup)
end
end