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fix: null pointer deref on col #943

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merged 1 commit into from
Aug 9, 2023
Merged

fix: null pointer deref on col #943

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5 changes: 3 additions & 2 deletions capi/geos_ts_c.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1184,7 +1184,7 @@ extern "C" {
{
return execute(extHandle, [&]() {
BufferParameters bp;
//-- use default cap style ROUND
//-- use default cap style ROUND
bp.setQuadrantSegments(quadsegs);

if(joinStyle > BufferParameters::JOIN_BEVEL) {
Expand Down Expand Up @@ -2069,10 +2069,11 @@ extern "C" {
GeometryCollection *col = dynamic_cast<GeometryCollection*>(collection);
if (!col) {
handle->ERROR_MESSAGE("Parameter collection of GEOSGeom_releaseCollection_r must not be a collection");
} else {
*ngeoms = static_cast<unsigned int>(col->getNumGeometries());
}

// Early exit on empty/null input
*ngeoms = static_cast<unsigned int>(col->getNumGeometries());
if (!col || *ngeoms == 0) {
return static_cast<Geometry**>(nullptr);
}
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