[NumPy-Tickets] [NumPy] #1770: Segfault with python 3.2 structured array non-existent field

[NumPy Trac]

#1770: Segfault with python 3.2 structured array non-existent field
---------------------------+------------------------------------------------
 Reporter:  matthew.brett  |       Owner:  somebody   
     Type:  defect         |      Status:  new        
 Priority:  normal         |   Milestone:  Unscheduled
Component:  Other          |     Version:  devel      
 Keywords:                 |  
---------------------------+------------------------------------------------
 {{{
 $ python3.2
 Python 3.2 (r32:88452, Feb 20 2011, 11:12:31)
 [GCC 4.2.1 (Apple Inc. build 5664)] on darwin
 Type "help", "copyright", "credits" or "license" for more information.
 >>> import numpy as np
 >>> a = np.zeros((1,), dtype=[('f1', 'f')])
 >>> a['f1'] = 1
 >>> a['f2'] = 1
 Segmentation fault
 }}}


 All tests pass with np.test()

 Expected behavior with same code on python2.6:


 {{{
 >>> a['f2'] = 1
 Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
 ValueError: field named f2 not found.
 }}}

 Discussion on the mailing list with email of same title as this ticket.

 Christoph Gohlke suggested the following patch:

 {{{

 diff --git a/numpy/core/src/multiarray/mapping.c
 b/numpy/core/src/multiarray/mapping.c
 index 8db85bf..3a72811 100644
 --- a/numpy/core/src/multiarray/mapping.c
 +++ b/numpy/core/src/multiarray/mapping.c
 @@ -812,10 +812,16 @@ array_ass_sub(PyArrayObject *self, PyObject *index,
 PyObject *op)
                 }
             }
         }
 -
 +#if defined(NPY_PY3K)
 +        PyErr_Format(PyExc_ValueError,

 +                     "field named %S not found.",
 +                     index);
 +#else

         PyErr_Format(PyExc_ValueError,
                      "field named %s not found.",
                      PyString_AsString(index));
 +#endif
 +
         return -1;
     }
 }}}

-- 
Ticket URL: <http://projects.scipy.org/numpy/ticket/1770>
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