text: import taichi as ti
  
  @ti.all_archs
  def test_empty():
  
    @ti.kernel
    def func():
      pass
  
    func()
  
  @ti.all_archs
  def test_empty_args():
  
    @ti.kernel
    def func(x: ti.i32, arr: ti.ext_arr()):
      pass
  
    import numpy as np
    func(42, np.arange(10, dtype=np.float32))
  