From fe3b66c044745f11fa2cd9d427ee3d257dc48f38 Mon Sep 17 00:00:00 2001
From: Andrej730 <azhilenkov@gmail.com>
Date: Fri, 27 Sep 2024 16:30:20 +0500
Subject: [PATCH] Stop processing IfcIndexedPolyCurve with < 2 verts at mapping
 stage #5474

as they're invalid and would't be able to create a curve
---
 src/ifcgeom/mapping/IfcIndexedPolyCurve.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/ifcgeom/mapping/IfcIndexedPolyCurve.cpp b/src/ifcgeom/mapping/IfcIndexedPolyCurve.cpp
index f63725a997..24f574c80f 100644
--- a/src/ifcgeom/mapping/IfcIndexedPolyCurve.cpp
+++ b/src/ifcgeom/mapping/IfcIndexedPolyCurve.cpp
@@ -34,6 +34,10 @@ taxonomy::ptr mapping::map_impl(const IfcSchema::IfcIndexedPolyCurve* inst) {
 	}
 
 	std::vector<taxonomy::point3::ptr> points;
+	if (coordinates.size() < 2) {
+		throw IfcParse::IfcException("IfcIndexedPolyCurve has less than 2 points.");
+	}
+
 	points.reserve(coordinates.size());
 	for (auto& coords : coordinates) {
 		points.push_back(taxonomy::make<taxonomy::point3>(