text: from polyphony import testbench
  
  class C:
      def __init__(self, x):
          self.x = x
  
  def field05(x):
      c = C(x)
      c = C(x+1)
      return c.x
  
  @testbench
  def test():
      assert 2 == field05(1)
      assert 3 == field05(2)
      assert 4 == field05(3)
  
  test()
  