From 000e3acb2bf16ff0863ab91b208b7dbda56f8b59 Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Wed, 19 Jan 2022 15:36:58 +0100
Subject: [PATCH] #1948 clear tmp list

---
 src/ifcgeom/IfcGeomFunctions.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/ifcgeom/IfcGeomFunctions.cpp b/src/ifcgeom/IfcGeomFunctions.cpp
index ab48de9ffb..69e74a8102 100644
--- a/src/ifcgeom/IfcGeomFunctions.cpp
+++ b/src/ifcgeom/IfcGeomFunctions.cpp
@@ -4832,6 +4832,7 @@ bool IfcGeom::Kernel::boolean_operation(const TopoDS_Shape& a_input, const TopTo
 		if (do_subtraction_eliminate_touching) {
 			PERF("boolean subtraction: eliminate touching");
 
+			b_tmp.Clear();
 			auto N = eliminate_touching_operands(fuzziness, a, b, b_tmp);
 			if (N) {
 				Logger::Notice("Eliminated " + std::to_string(N) + " touching operands");