code: def setUp(self):
      self.maxDiff = None
      self.prog_name = "bogus_program_xxxx"
      self.temp_path_dir = os.path.abspath(os.getcwd())
      self.env = self.enterContext(os_helper.EnvironmentVarGuard())
      for cv in (
          "CFLAGS",
          "LDFLAGS",
          "CPPFLAGS",
          "BASECFLAGS",
          "BLDSHARED",
          "LDSHARED",
          "CC",
          "CXX",
          "PY_CFLAGS",
          "PY_LDFLAGS",
          "PY_CPPFLAGS",
          "PY_CORE_CFLAGS",
          "PY_CORE_LDFLAGS",
      ):
          if cv in self.env:
              self.env.unset(cv)
  
imports: import os
  import platform
  import stat
  import sys
  import unittest
  from test.support import os_helper
  import _osx_support
label_desc: Use image node_id 1 for calling the Test_OSXSupport obj's underlying member method code with example usage: obj.setUp() without return types