test/test_dwarf_formindirect.py

   1 #-------------------------------------------------------------------------------
   2 # elftools tests
   3 #
   4 # Seva Alekseyev (sevaa@sprynet.com)
   5 # This code is in the public domain
   6 #-------------------------------------------------------------------------------
   7 import unittest
   8 import os
   9
  10 from elftools.elf.elffile import ELFFile
  11
  12 class TestFormIndirect(unittest.TestCase):
  13     def test_formindirect(self):
  14         path = os.path.join('test', 'testfiles_for_unittests',
  15                             'gmtime_r.o.elf')
  16         with open(path, 'rb') as f:
  17             elffile = ELFFile(f)
  18             dwarfinfo = elffile.get_dwarf_info(follow_links=False)
  19             cu = next(dwarfinfo.iter_CUs())
  20             # That DIE in that binary has an attribute with form DW_FORM_indirect
  21             die = next(die for die in cu.iter_DIEs() if die.tag == 'DW_TAG_pointer_type')
  22             attr = die.attributes["DW_AT_type"]
  23             self.assertEqual(attr.form, "DW_FORM_ref2") # That's the real form
  24             self.assertEqual(attr.indirection_length, 1) # But the fact of indirection is captured
  25
  26 if __name__ == '__main__':
  27     unittest.main()