#16105: libgdal1-1.7.0 broke django.contrib.gis.gdal.libgdal
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Reporter: ulvinge@… | Owner: nobody
Type: Bug | Status: closed
Milestone: | Component: GIS
Version: 1.3 | Severity: Normal
Resolution: invalid | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
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Changes (by aaugustin):
* status: new => closed
* needs_docs: => 0
* resolution: => invalid
* needs_tests: => 0
* needs_better_patch: => 0
Comment:
In my opinion, your segfault could be caused by:
- a) a bug in `ctypes` — `django.contrib.gis.gdal.libgdal` uses this
module in a very straightforward way to load `libgdal1`,
- b) a bug in `libgdal1` — you're using a testing version, after all,
- c) a bug in the Python interpreter itself — that sounds unlikely,
- d) any combination of the above.
Since `ctypes` is part of the standard library, I think you should take
the offending code from
https://code.djangoproject.com/browser/django/trunk/django/contrib/gis/gdal/libgdal.py,
extract the minimum failing test case, and post that to Python's bug
tracker.
If might be as simple as:
{{{
from ctypes import CDLL
from ctypes.util import find_library
lib_path = find_library('gdal-1.7.0')
lgdal = CDLL(lib_path)
}}}
(Disclaimer: I don't have access to a box running debian-testing, so I
don't know if this is sufficient to exhibit the bug.)
Anyway, Django does not contain any C code, it's written entirely in
Python. So while it can raise exceptions, it can't (in theory) create
segfaults. For this reason, I'm going to mark the bug as invalid.
--
Ticket URL: <https://code.djangoproject.com/ticket/16105#comment:1>
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