code: def test_issue98248_error_propagation(self):
      class Div0:
          def __index__(self):
              1 / 0
  
      def test_error_propagation(fmt_str):
          with self.subTest(
              format_str=fmt_str, exception="ZeroDivisionError"
          ):
              with self.assertRaises(ZeroDivisionError):
                  struct.pack(fmt_str, Div0())
  
      for prefix in "@=<>":
          for int_type in "BHILQbhilq":
              test_error_propagation(prefix + int_type)
  
      test_error_propagation("N")
      test_error_propagation("n")
  
imports: from collections import abc
  import array
  import gc
  import math
  import operator
  import unittest
  import struct
  import sys
  import weakref
  from test import support
  from test.support import import_helper
  from test.support.script_helper import assert_python_ok
label_desc: Use image node_id 31 for calling the StructTest obj's underlying member method code with example usage: obj.test_issue98248_error_propagation() without return types