From e282a184740efbb9c2b90889a61577711c602c70 Mon Sep 17 00:00:00 2001
From: Richard Brice <37087370+RickBrice@users.noreply.github.com>
Date: Sun, 8 Mar 2026 09:55:47 -0700
Subject: [PATCH] Fixes crash in taxonomy::loft::print_impl when axis ==
 nullptr

---
 src/ifcgeom/taxonomy.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/ifcgeom/taxonomy.h b/src/ifcgeom/taxonomy.h
index 5d70d4490c..c1162eebb0 100644
--- a/src/ifcgeom/taxonomy.h
+++ b/src/ifcgeom/taxonomy.h
@@ -1068,8 +1068,10 @@ typedef item const* ptr;
 				virtual kinds kind() const { return LOFT; }
 
 				virtual void print_impl(std::ostream& o, int indent) const {
-					o << std::string(indent, ' ') << "axis" << std::endl;
-					axis->print(o, indent + 4);
+               if (axis) {
+                  o << std::string(indent, ' ') << "axis" << std::endl;
+                  axis->print(o, indent + 4);
+               }
 				}
 
 				virtual size_t calc_hash() const {