Issue #8746: Use tempfile module to get tempdir and randomize the
link file name.
diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index 3b9bc20..a6a7306 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -13,10 +13,12 @@
import shutil
import stat
import sys
+import tempfile
import unittest
import warnings
-_DUMMY_SYMLINK = '%s/dummy-symlink' % os.getenv('TMPDIR', '/tmp')
+_DUMMY_SYMLINK = os.path.join(tempfile.gettempdir(),
+ test_support.TESTFN + '-dummy-symlink')
warnings.filterwarnings('ignore', '.* potential security risk .*',
RuntimeWarning)