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#26 PyTables segmentation faults when removing rows

closed
Francesc Altet
None
5
2005-06-20
2005-05-12
Justin Bronn
No

PyTables will cause python to segmentation fault when
removing the last row out of a table with the
table.removeRows() method.

Attached is test code to reproduce this problem:
python segfault.py
Segmentation Fault

Tested with python 2.4.1 on both RedHat 9 and Fedora Core 1
Used PyTables v1.0, numarray 1.3.1, and hdf5 1.6.4.

Discussion

  • Justin Bronn

    Justin Bronn - 2005-05-12

    Code to cause PyTables segmentation fault when removing rows

     
    segfault.py

  • Ivan Vilata i Balaguer

    Ivan Vilata i Balaguer - 2005-05-20

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    user_id=1064183

    This is in fact a bug in the HDF5 library, which fails upon
    completely emptying a dataset. However, there is no doubt
    that this case should be caught by PyTables to at least
    avoid the segfault and replace it by an exception.

     

  • Francesc Altet

    Francesc Altet - 2005-06-20
    • assigned_to: nobody --> falted
    • status: open --> closed
     

  • Francesc Altet

    Francesc Altet - 2005-06-20

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    user_id=249033

    Now, a check is done to know if one is trying to delete
    all the rows in a Table, and an UnImplemented error is
    issued if so.

    When HDF5 will support this, this check will be
    released.