From 691fe549d71cf808b00e0d65e5fe2d3abc0b9490 Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Tue, 18 Jun 2024 13:52:42 +0200
Subject: [PATCH] taxonony::cast throws exceptions now on invalid casts

---
 src/ifcgeom/taxonomy.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/ifcgeom/taxonomy.h b/src/ifcgeom/taxonomy.h
index d795cbb91a..c74080cfaa 100644
--- a/src/ifcgeom/taxonomy.h
+++ b/src/ifcgeom/taxonomy.h
@@ -1239,7 +1239,11 @@ typedef item const* ptr;
             if (pwupg) {
                return pwupg;
             }
-				return std::static_pointer_cast<T>(u);
+				if (auto r = std::dynamic_pointer_cast<T>(u)) {
+					return r;
+				} else {
+					throw std::runtime_error("Unexpected topology");
+				}
 			}
 			template <typename T, typename U>
 			std::shared_ptr<T> dcast(const std::shared_ptr<U>& u) {