Fix: Don't allow a separator as root for submenus.

diff --git a/xmenu.c b/xmenu.c
index afb4301..a4c29e1 100644 (file)
--- a/xmenu.c
+++ b/xmenu.c
@@ -432,6 +432,10 @@ buildmenutree(unsigned level, const char *label, const char *output, char *file)
                for (item = prevmenu->list; item->next != NULL; item = item->next)
                        ;
 
                for (item = prevmenu->list; item->next != NULL; item = item->next)
                        ;
 

+               /* a separator is no valid root for a submenu */
+               if (!item->label)
+                       errx(1, "a separator is no valid root for a submenu");
+

                prevmenu = menu;
                menu->caller = item;
                item->submenu = menu;
                prevmenu = menu;
                menu->caller = item;
                item->submenu = menu;