From 32cf5fa61a8ede905dded37433074656fa5d2219 Mon Sep 17 00:00:00 2001
From: Ajinkya Dahale <AjinkyaDahale@users.noreply.github.com>
Date: Fri, 14 Mar 2025 02:17:02 +0530
Subject: [PATCH] [Sketcher] Add missing check when transforming constraints
 for trim

Fixes https://github.com/AstoCAD/FreeCAD/issues/24.
---
 src/Mod/Sketcher/App/SketchObject.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Mod/Sketcher/App/SketchObject.cpp b/src/Mod/Sketcher/App/SketchObject.cpp
index a39ce9c6e4..6235f0a5cf 100644
--- a/src/Mod/Sketcher/App/SketchObject.cpp
+++ b/src/Mod/Sketcher/App/SketchObject.cpp
@@ -3628,7 +3628,7 @@ std::unique_ptr<Constraint> transformPreexistingConstraintForTrim(const SketchOb
      */
     // TODO: Symmetric and distance constraints (sometimes together) can be changed to something
     std::unique_ptr<Constraint> newConstr;
-    if (!constr->involvesGeoId(cuttingGeoId)
+    if (cuttingGeoId == GeoEnum::GeoUndef || !constr->involvesGeoId(cuttingGeoId)
         || !constr->involvesGeoIdAndPosId(GeoId, PointPos::none)) {
         return newConstr;
     }