From 96c8323a06983e12daf00031c4c2afa3e835c63a Mon Sep 17 00:00:00 2001
From: Dion Moult <dion@thinkmoult.com>
Date: Sat, 20 Jan 2024 14:16:54 +1100
Subject: [PATCH] Fix #4221. Only load leaf rows with cost values. Createing a
 monetary measure with None results in a segfault on Windows.

---
 src/ifc5d/ifc5d/csv2ifc.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ifc5d/ifc5d/csv2ifc.py b/src/ifc5d/ifc5d/csv2ifc.py
index b97ba7c68d..cb7b8869ff 100644
--- a/src/ifc5d/ifc5d/csv2ifc.py
+++ b/src/ifc5d/ifc5d/csv2ifc.py
@@ -134,7 +134,7 @@ class Csv2Ifc:
                         category = category.replace("Rate", "")
                         category = category.strip()
                     cost_value.Category = category
-        else:
+        elif cost_item["CostValues"]:
             cost_value = ifcopenshell.api.run("cost.add_cost_value", self.file, parent=cost_item["ifc"])
             cost_value.AppliedValue = self.file.createIfcMonetaryMeasure(cost_item["CostValues"])
             if self.is_schedule_of_rates: