From 33841eb827045002a5fa3e82cde7ecccb9e67cdb Mon Sep 17 00:00:00 2001
From: Thomas Gimpel <thomas.gimpel@web.de>
Date: Tue, 30 Jun 2020 23:08:35 +0200
Subject: [PATCH] Sketcher: fix crash, when cloning element having a
 non-driving distance, radius, diameter or angle constraint; fixes #4393

---
 src/Mod/Sketcher/App/SketchObject.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Mod/Sketcher/App/SketchObject.cpp b/src/Mod/Sketcher/App/SketchObject.cpp
index d07bf24430..038847366d 100644
--- a/src/Mod/Sketcher/App/SketchObject.cpp
+++ b/src/Mod/Sketcher/App/SketchObject.cpp
@@ -3939,6 +3939,7 @@ int SketchObject::addCopy(const std::vector<int> &geoIdList, const Base::Vector3
                                         // Distances on a single Element are mapped to equality constraints in clone mode
                                         Constraint *constNew = (*it)->copy();
                                         constNew->Type = Sketcher::Equal;
+                                        constNew->isDriving = true;
                                         constNew->Second = geoIdMap[(*it)->First]; // first is already (*it->First)
                                         newconstrVals.push_back(constNew);
                                     }
@@ -3946,6 +3947,7 @@ int SketchObject::addCopy(const std::vector<int> &geoIdList, const Base::Vector3
                                         // Angles on a single Element are mapped to parallel constraints in clone mode
                                         Constraint *constNew = (*it)->copy();
                                         constNew->Type = Sketcher::Parallel;
+                                        constNew->isDriving = true;
                                         constNew->Second = geoIdMap[(*it)->First]; // first is already (*it->First)
                                         newconstrVals.push_back(constNew);
                                     }
@@ -3968,6 +3970,7 @@ int SketchObject::addCopy(const std::vector<int> &geoIdList, const Base::Vector3
                                         // Distances on a two Elements, which must be points of the same line are mapped to equality constraints in clone mode
                                         Constraint *constNew = (*it)->copy();
                                         constNew->Type = Sketcher::Equal;
+                                        constNew->isDriving = true;
                                         constNew->FirstPos = Sketcher::none;
                                         constNew->Second = geoIdMap[(*it)->First]; // first is already (*it->First)
                                         constNew->SecondPos = Sketcher::none;