File "test_struct_struct.py", line 20, in <module>
    s = cast(data, ptr)[0]
  File "/home/mihnea/Downloads/Issue1213/source_pypy/pypy/lib-python/2.7/ctypes/__init__.py", line 501, in cast
    return _cast_addr(obj, obj, typ)
  File "/home/mihnea/Downloads/Issue1213/source_pypy/pypy/lib_pypy/_ctypes/pointer.py", line 148, in _cast_addr
    % (type(obj),))
TypeError: cast() argument 1 must be a pointer, not <type 'str'>