call to_s on value passed to table_name=

activerecord/lib/active_record/model_schema.rb

@@ -115,7 +115,7 @@ def table_name
       # the documentation for ActiveRecord::Base#table_name.
       def table_name=(value)
         @original_table_name = @table_name if defined?(@table_name)
-        @table_name          = value
+        @table_name          = value && value.to_s
         @quoted_table_name   = nil
         @arel_table          = nil
         @relation            = Relation.new(self, arel_table)

activerecord/test/cases/base_test.rb

@@ -1446,6 +1446,11 @@ def test_switching_between_table_name
     end
   end
 
+  def test_set_table_name_symbol_converted_to_string
+    Joke.table_name = :cold_jokes
+    assert_equal 'cold_jokes', Joke.table_name
+  end
+
   def test_quoted_table_name_after_set_table_name
     klass = Class.new(ActiveRecord::Base)