From 7eaede5482196c2a14dba54033c40939413228b7 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Tue, 25 Feb 2020 23:44:22 +0100
Subject: [PATCH] Fem: [skip ci] fix segmentation fault when opening contraint
 transform panel

The segmentation fault is caused when NameDispl has less elements than the RefDispl property
---
 src/Mod/Fem/Gui/TaskFemConstraintTransform.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Mod/Fem/Gui/TaskFemConstraintTransform.cpp b/src/Mod/Fem/Gui/TaskFemConstraintTransform.cpp
index e8afeabb27..7d213e8419 100644
--- a/src/Mod/Fem/Gui/TaskFemConstraintTransform.cpp
+++ b/src/Mod/Fem/Gui/TaskFemConstraintTransform.cpp
@@ -119,12 +119,15 @@ TaskFemConstraintTransform::TaskFemConstraintTransform(ViewProviderFemConstraint
     //Transformable surfaces
     Gui::Command::doCommand(Gui::Command::Doc,TaskFemConstraintTransform::getSurfaceReferences((static_cast<Fem::Constraint*>(ConstraintView->getObject()))->getNameInDocument()).c_str());
     std::vector<App::DocumentObject*> ObjDispl = pcConstraint->RefDispl.getValues();
-    std::vector<App::DocumentObject*> nDispl = pcConstraint->NameDispl.getValues();
     std::vector<std::string> SubElemDispl = pcConstraint->RefDispl.getSubValues();
 
     for (std::size_t i = 0; i < ObjDispl.size(); i++) {
         ui->lw_displobj_rect->addItem(makeRefText(ObjDispl[i], SubElemDispl[i]));
         ui->lw_displobj_cylin->addItem(makeRefText(ObjDispl[i], SubElemDispl[i]));
+    }
+
+    std::vector<App::DocumentObject*> nDispl = pcConstraint->NameDispl.getValues();
+    for (std::size_t i = 0; i < nDispl.size(); i++) {
         ui->lw_dis_rect->addItem(makeText(nDispl[i]));
         ui->lw_dis_cylin->addItem(makeText(nDispl[i]));
     }