#994: Segfault in UnaryUnionOp (::buildGeometry, something with C++ strings!)
------------------------+---------------------------
Reporter: strk | Owner: geos-devel@…
Type: defect | Status: new
Priority: blocker | Milestone:
Component: Default | Version: master
Severity: Unassigned | Resolution:
Keywords: |
------------------------+---------------------------
Comment (by strk):
Valgrind view of the matter:
{{{
==26567== Invalid read of size 8
==26567== at 0x25936383:
geos::operation::geounion::OverlapUnion::unionBuffer(geos::geom::Geometry
const*, geos::geom::Geometry const*) (OverlapUnion.cpp:133)
==26567== by 0x259364F2:
geos::operation::geounion::OverlapUnion::unionFull(geos::geom::Geometry
const*, geos::geom::Geometry const*) (OverlapUnion.cpp:119)
==26567== by 0x25936F18:
geos::operation::geounion::OverlapUnion::doUnion() (OverlapUnion.cpp:55)
==26567== by 0x259331AC:
geos::operation::geounion::CascadedPolygonUnion::unionActual(geos::geom::Geometry*,
geos::geom::Geometry*) (CascadedPolygonUnion.cpp:243)
==26567== by 0x25933242:
geos::operation::geounion::CascadedPolygonUnion::unionSafe(geos::geom::Geometry*,
geos::geom::Geometry*) (CascadedPolygonUnion.cpp:234)
==26567== by 0x25933343:
geos::operation::geounion::CascadedPolygonUnion::binaryUnion(geos::operation::geounion::GeometryListHolder*,
unsigned long, unsigned long) (CascadedPolygonUnion.cpp:191)
==26567== by 0x259336DF:
geos::operation::geounion::CascadedPolygonUnion::unionTree(geos::index::strtree::ItemsList*)
(CascadedPolygonUnion.cpp:168)
==26567== by 0x2593349B:
geos::operation::geounion::CascadedPolygonUnion::reduceToGeometries(geos::index::strtree::ItemsList*)
(CascadedPolygonUnion.cpp:205)
==26567== by 0x259336D1:
geos::operation::geounion::CascadedPolygonUnion::unionTree(geos::index::strtree::ItemsList*)
(CascadedPolygonUnion.cpp:167)
==26567== by 0x2593349B:
geos::operation::geounion::CascadedPolygonUnion::reduceToGeometries(geos::index::strtree::ItemsList*)
(CascadedPolygonUnion.cpp:205)
==26567== by 0x259336D1:
geos::operation::geounion::CascadedPolygonUnion::unionTree(geos::index::strtree::ItemsList*)
(CascadedPolygonUnion.cpp:167)
==26567== by 0x259337FC:
geos::operation::geounion::CascadedPolygonUnion::Union()
(CascadedPolygonUnion.cpp:156)
==26567== Address 0x18 is not stack'd, malloc'd or (recently) free'd
}}}
--
Ticket URL: <https://trac.osgeo.org/geos/ticket/994#comment:2>
GEOS <http://trac.osgeo.org/geos>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite
(JTS).
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