lock around mutating the generated methods module

1a5394f4 · Aaron Patterson · 6e43fcb3 · 1a5394f4
隐藏空白更改
内联并排

Showing with 4 addition and 2 deletion

activerecord/lib/active_record/attribute_methods.rb activerecord/lib/active_record/attribute_methods.rb +4 -2

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--- a/activerecord/lib/active_record/attribute_methods.rb
+++ b/activerecord/lib/active_record/attribute_methods.rb
@@ -46,8 +46,10 @@ def define_attribute_methods # :nodoc:
      end

      def undefine_attribute_methods # :nodoc:
-        super if @attribute_methods_generated
-        @attribute_methods_generated = false
+        generated_attribute_methods.synchronize do
+          super if @attribute_methods_generated
+          @attribute_methods_generated = false
+        end
      end

      # Raises a <tt>ActiveRecord::DangerousAttributeError</tt> exception when an