Message1119

Under jython 2.2 (latest and previous build) attempting to access 
specifically the __doc__ attribute of objects of built in classes fails.
The example uses "dict" but the bug is not specific to this.  

Other classes may also be affected. The behavior was first seen 
introspecting the on an object of the PatternObject class in the re 
module.

E.g.

>>> d = dict()
>>> dir(d)
['__class__', '__cmp__', '__contains__', '__delattr__', '__delitem__', 
'__doc__', '__eq__', '__getattribute__', '__getitem__', '__hash__', '__init__', 
'__iter__', '__len__', '__ne__', '__new__', '__repr__', '__setattr__', 
'__setitem__', '__str__', '__unicode__', 'clear', 'copy', 'fromkeys', 'get', 
'has_key', 'items', 'iteritems', 'iterkeys', 'itervalues', 'keys', 'pop', 
'popitem', 'setdefault', 'update', 'values']
>>> d.__class__
<type 'dict'>
>>> d.__doc__
Traceback (innermost last):
  File "<console>", line 1, in ?
java.lang.NullPointerException
	at org.python.core.PyObject.getDoc(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorIm
pl.java:39)
	at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAc
cessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:324)
	at org.python.core.PyGetSetDescr.__get__(Unknown Source)
	at org.python.core.PyObject.object___findattr__(Unknown Source)
	at org.python.core.PyObject.__findattr__(Unknown Source)
	at org.python.core.PyObject.__getattr__(Unknown Source)
	at org.python.pycode._pyx11.f$0(<console>:1)
	at org.python.pycode._pyx11.call_function(<console>)
	at org.python.core.PyTableCode.call(Unknown Source)
	at org.python.core.PyCode.call(Unknown Source)
	at org.python.core.Py.runCode(Unknown Source)
	at org.python.core.Py.exec(Unknown Source)
	at org.python.util.PythonInterpreter.exec(Unknown Source)
	at org.python.util.InteractiveInterpreter.runcode(Unknown Source)
	at org.python.util.InteractiveInterpreter.runsource(Unknown 
Source)
	at org.python.util.InteractiveInterpreter.runsource(Unknown 
Source)
	at org.python.util.InteractiveConsole.push(Unknown Source)
	at org.python.util.InteractiveConsole.interact(Unknown Source)
	at org.python.util.jython.main(Unknown Source)

java.lang.NullPointerException: java.lang.NullPointerException