still_passes.patch

diff --git a/swift/obj/diskfile.py b/swift/obj/diskfile.py
index 5fa2461..2e38b38 100644
--- a/swift/obj/diskfile.py
+++ b/swift/obj/diskfile.py
@@ -2096,6 +2096,8 @@ class DiskFileManager(BaseDiskFileManager):
             [accepted_files.get(ext)
              for ext in ('.data', '.meta', '.ts')])
 
+        assert not any([data_file, meta_file, ts_file])
+
         return ((data_file is None and meta_file is None and ts_file is None)
                 or (ts_file is not None and data_file is None
                     and meta_file is None)