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Fixed #21662 -- Kept parent reference in prepared geometry

Thanks Robert Scott for the report.
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commit 542198c1d059b3ecf64477c1c10c0518d229345b 1 parent 1716b7c
@claudep claudep authored
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4 django/contrib/gis/geos/prepared.py
@@ -12,6 +12,10 @@ class PreparedGeometry(GEOSBase):
ptr_type = capi.PREPGEOM_PTR
def __init__(self, geom):
+ # Keeping a reference to the original geometry object to prevent it
+ # from being garbage collected which could then crash the prepared one
+ # See #21662
+ self._base_geom = geom
if not isinstance(geom, GEOSGeometry):
raise TypeError
self.ptr = capi.geos_prepare(geom.ptr)
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4 django/contrib/gis/geos/tests/test_geos.py
@@ -1046,6 +1046,10 @@ def test_prepared(self):
self.assertEqual(mpoly.intersects(pnt), prep.intersects(pnt))
self.assertEqual(c, prep.covers(pnt))
+ # Original geometry deletion should not crash the prepared one (#21662)
+ del mpoly
+ self.assertTrue(prep.covers(Point(5, 5)))
+
def test_line_merge(self):
"Testing line merge support"
ref_geoms = (fromstr('LINESTRING(1 1, 1 1, 3 3)'),

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