[myhdl-list] Error in Intbv class?

[Forumulator B. <for...@gm...>]

Hello,

I may have found a potential bug in intbv:

>>> a=intbv(5)[4:0]
>>> a[6:0]=20
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.4/dist-packages/myhdl/_intbv.py", line 180,
in __setitem__
    self._handleBounds()
  File "/usr/local/lib/python3.4/dist-packages/myhdl/_intbv.py", line 77,
in _handleBounds
    (self._val, self._max))
ValueError: intbv value 20 >= maximum 16
>>> a
intbv(20)

It gives a ValueError, but still sets the value of a to 20. Would this be
considered a bug since an exception is thrown?