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Data Exchange - IGES Import Degenerated BSpline crash #368

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Degenerated bspline leads to null dereference
Fix BSpline curve check and improve exception handling in TransferBSplineCurve
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Pasukhin Dmitry 2025-02-14 14:13:53 +01:00 committed by GitHub
parent 425f88e63a
commit 67bd61d4d3
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1 changed files with 5 additions and 2 deletions
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7
src/IGESToBRep/IGESToBRep_BasicCurve.cxx
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@ -1130,9 +1130,11 @@ Handle(Geom_Curve) IGESToBRep_BasicCurve::TransferBSplineCurve(
//: 5 BSplineC = new Geom_BSplineCurve(Poles, Weight, Knot, Mult, Degree); //: 5 BSplineC = new Geom_BSplineCurve(Poles, Weight, Knot, Mult, Degree);
} }
// sln 29.12.2001 OCC90 : If curve can not be created do nothing // If curve can not be created do nothing
if (!checkBSplineCurve(this, start, Knot, Weight)) if (Poles.Size() < 2 || !checkBSplineCurve(this, start, Knot, Weight))
{
return BSplineRes; return BSplineRes;
}
{ {
try try
@ -1151,6 +1153,7 @@ Handle(Geom_Curve) IGESToBRep_BasicCurve::TransferBSplineCurve(
anException.Print(std::cout); anException.Print(std::cout);
#endif #endif
(void)anException; (void)anException;
return BSplineRes;
} }
} }