Index: packages/Python/lldbsuite/test/dosep.py
===================================================================
--- packages/Python/lldbsuite/test/dosep.py
+++ packages/Python/lldbsuite/test/dosep.py
@@ -1688,6 +1688,7 @@
 
     # move core files into session dir
     cores = find('core.*', test_subdir)
+    test_directory = os.path.dirname(os.path.realpath(__file__))
     for core in cores:
         dst = core.replace(test_directory, "")[1:]
         dst = dst.replace(os.path.sep, "-")