old_contents: import os
  import ctypes
  import doctest
  
  from numba import *
  import numba
  
  try:
      import cffi
      ffi = cffi.FFI()
  except ImportError:
      ffi = None
  
  # ______________________________________________________________________
  
  def test():
      if ffi is not None:
          test_cffi_calls()
  
  # ______________________________________________________________________
  # Tests
  
  @autojit(nopython=True)
  def call_cffi_func(func, value):
      return func(value)
  
  def test_cffi_calls():
      # Test printf for nopython and no segfault
      ffi.cdef("int printf(char *, ...);")
      lib = ffi.dlopen(None)
      printf = lib.printf
      call_cffi_func(printf, "Hello world!\n")
  
  # ______________________________________________________________________
  
  if __name__ == "__main__":
      test()
new_contents: import os
  import ctypes
  import doctest
  
  from numba import *
  import numba
  
  try:
      import cffi
      ffi = cffi.FFI()
  except ImportError:
      ffi = None
  
  # ______________________________________________________________________
  
  def test():
      if ffi is not None:
          test_cffi_calls()
  
  # ______________________________________________________________________
  # Tests
  
  @autojit(nopython=True)
  def call_cffi_func(func, value):
      return func(value)
  
  def test_cffi_calls():
      # Test printf for nopython and no segfault
      ffi.cdef("int printf(char *, ...);", override=True)
      lib = ffi.dlopen(None)
      printf = lib.printf
      call_cffi_func(printf, "Hello world!\n")
  
  # ______________________________________________________________________
  
  if __name__ == "__main__":
      test()
subject: Fix CFFI test when executed multiple times