From 432ac985e7e7681a94841859e9a065d1dd85177c Mon Sep 17 00:00:00 2001
From: mwganson <mwganson@gmail.com>
Date: Fri, 2 Oct 2020 17:04:00 -0500
Subject: [PATCH] [PartDesign Multitransform] prevent crash when pressing
 delete key without feature selected to remove in multitransform dialog

---
 src/Mod/PartDesign/Gui/TaskMultiTransformParameters.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/Mod/PartDesign/Gui/TaskMultiTransformParameters.cpp b/src/Mod/PartDesign/Gui/TaskMultiTransformParameters.cpp
index a3f5c3b6c9..d01394c53b 100644
--- a/src/Mod/PartDesign/Gui/TaskMultiTransformParameters.cpp
+++ b/src/Mod/PartDesign/Gui/TaskMultiTransformParameters.cpp
@@ -196,10 +196,15 @@ void TaskMultiTransformParameters::onFeatureDeleted(void)
 {
     PartDesign::Transformed* pcTransformed = getObject();
     std::vector<App::DocumentObject*> originals = pcTransformed->Originals.getValues();
-    originals.erase(originals.begin() + ui->listWidgetFeatures->currentRow());
+    int currentRow = ui->listWidgetFeatures->currentRow();
+    if (currentRow < 0){
+        Base::Console().Error("PartDesign Multitransform: No feature selected for removing.\n");
+        return; //no current row selected
+    }
+    originals.erase(originals.begin() + currentRow);
     setupTransaction();
     pcTransformed->Originals.setValues(originals);
-    ui->listWidgetFeatures->model()->removeRow(ui->listWidgetFeatures->currentRow());
+    ui->listWidgetFeatures->model()->removeRow(currentRow);
     recomputeFeature();
 }