Merge pull request #39375 from qgis-bot/backport-39359-to-release-3_10

[Backport release-3_10] Fix crash in undo dock when clearing project/closing QGIS
qgis · Oct 15, 2020 · 390384c · 390384c
2 parents c72c111 + 5c97ff6
commit 390384c
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/app/qgsundowidget.h b/src/app/qgsundowidget.h
@@ -25,6 +25,7 @@
 #include <QWidget>
 #include <QUndoView>
 #include <QUndoStack>
+#include <QPointer>
 
 #include "qgspanelwidget.h"
 #include "qgis_app.h"
@@ -101,7 +102,7 @@ class APP_EXPORT QgsUndoWidget : public QgsPanelWidget
 
   private:
     QUndoView *mUndoView = nullptr;
-    QUndoStack *mUndoStack = nullptr;
+    QPointer< QUndoStack > mUndoStack;
     QgsMapCanvas *mMapCanvas = nullptr;
 
     int mPreviousIndex;