Ticket #116 (defect)

Opened 1 year ago

Last modified 1 year ago

Shapely: segfault with null point (points without coordinates)

Status: closed (wontfix)

Reported by: fredj Assigned to: seang
Priority: major Milestone: Shapely 1.0
Component: Shapely Version:
Keywords: Cc:

With the SVN version: 

>>> from shapely.geometry import Point
>>> a = Point()
>>> a.x
Segmentation fault

The same problem happens when setting the value: 

>>> from shapely.geometry import Point
>>> a = Point()
>>> a.x = 6.0
Segmentation fault

Attachments

shapely.geometry.point.116.patch (1.4 kB) - added by fredj on 07/12/07 06:37:47.

Change History

07/12/07 06:37:47: Modified by fredj

  • attachment shapely.geometry.point.116.patch added.

07/12/07 06:44:41: Modified by fredj

shapely.geometry.point.116.patch:

According to the geos_c documentation, GEOSGeom_getCoordSeq returns NULL on exception , this is the case when the Point is constructed without coordinates, in the ctypes world, NULL == False so this patch checks the returned value.

11/06/07 10:46:41: Modified by seang

  • status changed from new to assigned.
  • milestone set to Shapely 1.0.

11/06/07 10:47:03: Modified by seang

  • component changed from Data Stores and Sources to Shapely.

11/19/07 20:20:41: Modified by seang

  • status changed from assigned to closed.
  • resolution set to wontfix.

On closer inspection, this is a "won't fix". The x and y properties of a Point have been read only for some time now. The proper way to set the coordinates is via: 

p = Point()
p.coords = (0.0, 0.0)