NameError while using IPDB #9332

Hi all,

Though I;m not quite sure that this bug is caused by Ipython,
I got below error for using 'python -m ipdb script.py'

Traceback (most recent call last):
File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
"main", fname, loader, pkg_name)
File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/usr/local/lib/python2.7/dist-packages/ipdb/main.py", line 217, in
main()
File "/usr/local/lib/python2.7/dist-packages/ipdb/main.py", line 200, in main
except Restart:
NameError: global name 'Restart' is not defined

I installed ipython 4.1.2 and ipdb 0.9.0 on ubuntu 14.04.
Thank you in advance.