Do not delete sub menus of the control menu explicitly

This is not necessary because the sub menus are children of the main
menu, such that they are deleted together with the other actions by
QMenu::clear().

This prevents a crash that can happen if a sub menu is open while
another menu action is clicked.

Thanks to Fabian Vogt and Wolfgang Bauer for investigating this issue!

BUG: 354558
FIXED-IN: 15.12.2
REVIEW: 126693

diff --git a/src/dolphinmainwindow.cpp b/src/dolphinmainwindow.cpp
index 9b05168fd57c522af1210526123d980d35b34b4d..81c55e814c26085adfd2a9bc69fee401dc3505ed 100644 (file)
--- a/src/dolphinmainwindow.cpp
+++ b/src/dolphinmainwindow.cpp
@@ -789,8 +789,8 @@ void DolphinMainWindow::updateControlMenu()
     QMenu* menu = qobject_cast<QMenu*>(sender());
     Q_ASSERT(menu);
 
-    // All actions get cleared by QMenu::clear(). The sub-menus are deleted
-    // by connecting to the aboutToHide() signal from the parent-menu.
+    // All actions get cleared by QMenu::clear(). This includes the sub-menus
+    // because 'menu' is their parent.
     menu->clear();
 
     KActionCollection* ac = actionCollection();
@@ -840,7 +840,6 @@ void DolphinMainWindow::updateControlMenu()
 
     // Add "Go" menu
     QMenu* goMenu = new QMenu(i18nc("@action:inmenu", "Go"), menu);
-    connect(menu, &QMenu::aboutToHide, goMenu, &QMenu::deleteLater);
     goMenu->addAction(ac->action(KStandardAction::name(KStandardAction::Back)));
     goMenu->addAction(ac->action(KStandardAction::name(KStandardAction::Forward)));
     goMenu->addAction(ac->action(KStandardAction::name(KStandardAction::Up)));
@@ -850,7 +849,6 @@ void DolphinMainWindow::updateControlMenu()
 
     // Add "Tool" menu
     QMenu* toolsMenu = new QMenu(i18nc("@action:inmenu", "Tools"), menu);
-    connect(menu, &QMenu::aboutToHide, toolsMenu, &QMenu::deleteLater);
     toolsMenu->addAction(ac->action("show_filter_bar"));
     toolsMenu->addAction(ac->action("compare_files"));
     toolsMenu->addAction(ac->action("open_terminal"));
@@ -864,7 +862,6 @@ void DolphinMainWindow::updateControlMenu()
 
     // Add "Help" menu
     QMenu* helpMenu = new QMenu(i18nc("@action:inmenu", "Help"), menu);
-    connect(menu, &QMenu::aboutToHide, helpMenu, &QMenu::deleteLater);
     helpMenu->addAction(ac->action(KStandardAction::name(KStandardAction::HelpContents)));
     helpMenu->addAction(ac->action(KStandardAction::name(KStandardAction::WhatsThis)));
     helpMenu->addSeparator();