Comment 12 for bug 1711724

On Xenial, before:

$ python3.5 bpo-27945.py
Segmentation fault

After applying 3.5.2-2ubuntu0~16.04.2:

$ python3.5 bpo-27945.py
Traceback (most recent call last):
  File "bpo-27945.py", line 7, in <module>
    for result in d.items():
RuntimeError: dictionary changed size during iteration