Crash of Python binding about libelektra HOT 9 CLOSED

# python3 -V
Python 3.4.1

# swig -version
SWIG Version 2.0.11

[...]
     Start  6: test_key.py
6/36 Test  #6: test_key.py ........................   Passed    0.09 sec
[...]

Starting program: /usr/bin/python3.4 -B /libelektra/src/bindings/swig/python/tests/test_key.py
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
....
Program received signal SIGSEGV, Segmentation fault.
SWIG_Python_SetErrorObj (errtype=<optimized out>, obj=0x0) at /build/src/bindings/swig/python/kdbPYTHON_wrap.cxx:1220
1220      Py_DECREF(obj);
(gdb) bt full
#0  SWIG_Python_SetErrorObj (errtype=<optimized out>, obj=0x0) at /build/src/bindings/swig/python/kdbPYTHON_wrap.cxx:1220
        _py_decref_tmp = 0x0
#1  0x00007ffff6763526 in _wrap_Key__setName (args=<optimized out>) at /build/src/bindings/swig/python/kdbPYTHON_wrap.cxx:5839
        arg2 = 0xad8eb0
        argp1 = 0xadea30
        res2 = 512
        swig_obj = {<Key(this=<SwigPyObject at remote 0x7ffff59a2ea0>) at remote 0x7ffff5933978>, 'foo'}
        resultobj = 0x0
        arg1 = <optimized out>
        res1 = <optimized out>
#2  0x000000000050d677 in PyObject_Call (kw=0x0, arg=(<Key(this=<SwigPyObject at remote 0x7ffff59a2ea0>) at remote 0x7ffff5933978>, 'foo'), 
    func=<built-in method Key__setName of module object at remote 0x7ffff6a90458>) at ../Objects/abstract.c:2067
        result = <optimized out>
        call = 0x4f3850 <PyCFunction_Call>
#3  PyObject_CallFunctionObjArgs () at ../Objects/abstract.c:2359
        vargs = {{gp_offset = 8, fp_offset = 48, overflow_arg_area = 0x7fffffffd2e0, reg_save_area = 0x7fffffffd210}}
#4  0x000000000050d46b in property_descr_set.lto_priv () at ../Objects/descrobject.c:1408
        gs = <optimized out>
        func = <optimized out>
        res = <optimized out>
#5  0x00000000004ffa54 in _PyObject_GenericSetAttrWithDict () at ../Objects/object.c:1135
        tp = <optimized out>
        f = 0x50d450 <property_descr_set.lto_priv>
        res = -1
#6  0x00000000004fe84c in PyObject_GenericSetAttr (value='foo', name='name', obj=<Key(this=<SwigPyObject at remote 0x7ffff59a2ea0>) at remote 0x7ffff5933978>)
    at ../Objects/object.c:1185
No locals.
#7  PyObject_SetAttr () at ../Objects/object.c:914
        tp = 0xb9d8a8
        err = <optimized out>
#8  0x00000000004e8def in PyEval_EvalFrameEx () at ../Python/ceval.c:2121
        name = <optimized out>
        owner = <Key(this=<SwigPyObject at remote 0x7ffff59a2ea0>) at remote 0x7ffff5933978>
        v = 'foo'
        err = <optimized out>
        stack_pointer = 0x7ffff59403c8
        next_instr = 0x7ffff7e495db "Wd"
        opcode = 95
        oparg = <optimized out>
        why = WHY_NOT
        fastlocals = 0x7ffff59403b0
        freevars = 0x7ffff59403c0
        retval = <optimized out>
        tstate = <optimized out>
        co = 0x7ffff7ee9390
        instr_ub = -1
        instr_lb = <optimized out>
        instr_prev = -1
        first_instr = <optimized out>
        names = ('assertEqual', 'key', 'name', 'value', 'basename', 'dirname', 'fullname', 'bkey', 'kdb', 'Key', 'KEY_VALUE', 'assertFalse', 'isBinary', 'assertIsNone', 'getMeta', 'assertTrue', 'assertIsInstance', 'assertRaises', 'KeyInvalidName')
        consts = (None, 'user/foo/bar', 'value', 'bar', 'user/foo', 'user:myowner/foo/bar', 'system/bkey', b'bvalue\x00\x00', 'bkey', 'system', 'user/key1', 'binary', 'system/key2', 'key3', 'system/key3', 'user/key2', 'foo')
        opcode_targets = {0x4eff2d <PyEval_EvalFrameEx+32557>, 0x4e8194 <PyEval_EvalFrameEx+404>, 0x4e9765 <PyEval_EvalFrameEx+5989>, 0x4e9d1e <PyEval_EvalFrameEx+7454>, 
          0x4e9944 <PyEval_EvalFrameEx+6468>, 0x4ebb5a <PyEval_EvalFrameEx+15194>, 0x4eff2d <PyEval_EvalFrameEx+32557>, 0x4eff2d <PyEval_EvalFrameEx+32557>,

why = WHY_NOT

==15123==    at 0x6A95579: SWIG_Python_SetErrorObj(_object*, _object*) (kdbPYTHON_wrap.cxx:1220)
==15123==    by 0x6AA6525: _wrap_Key__setName (kdbPYTHON_wrap.cxx:5839)
==15123==    by 0x50D676: PyObject_CallFunctionObjArgs (abstract.c:2067)
==15123==    by 0x50D46A: property_descr_set.lto_priv.337 (descrobject.c:1408)
==15123==    by 0x4FFA53: _PyObject_GenericSetAttrWithDict (object.c:1135)
==15123==    by 0x4FE84B: PyObject_SetAttr (object.c:1185)
==15123==    by 0x4E8DEE: PyEval_EvalFrameEx (ceval.c:2121)
==15123==    by 0x4EC0CE: PyEval_EvalFrameEx (ceval.c:4331)
==15123==    by 0x503A39: function_call.lto_priv.376 (ceval.c:3585)
==15123==    by 0x4F1DCD: PyObject_Call (abstract.c:2067)
==15123==    by 0x4EA1DF: PyEval_EvalFrameEx (ceval.c:4558)
==15123==    by 0x503A39: function_call.lto_priv.376 (ceval.c:3585)
==15123==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==15123== 
==15123== 
==15123== Process terminating with default action of signal 11 (SIGSEGV): dumping core
==15123==  Access not within mapped region at address 0x0
==15123==    at 0x6A95579: SWIG_Python_SetErrorObj(_object*, _object*) (kdbPYTHON_wrap.cxx:1220)
==15123==    by 0x6AA6525: _wrap_Key__setName (kdbPYTHON_wrap.cxx:5839)
==15123==    by 0x50D676: PyObject_CallFunctionObjArgs (abstract.c:2067)
==15123==    by 0x50D46A: property_descr_set.lto_priv.337 (descrobject.c:1408)
==15123==    by 0x4FFA53: _PyObject_GenericSetAttrWithDict (object.c:1135)
==15123==    by 0x4FE84B: PyObject_SetAttr (object.c:1185)
==15123==    by 0x4E8DEE: PyEval_EvalFrameEx (ceval.c:2121)
==15123==    by 0x4EC0CE: PyEval_EvalFrameEx (ceval.c:4331)
==15123==    by 0x503A39: function_call.lto_priv.376 (ceval.c:3585)
==15123==    by 0x4F1DCD: PyObject_Call (abstract.c:2067)
==15123==    by 0x4EA1DF: PyEval_EvalFrameEx (ceval.c:4558)
==15123==    by 0x503A39: function_call.lto_priv.376 (ceval.c:3585)