--- panelfm.c.debug	2006-11-15 21:29:26.000000000 +0900
+++ panelfm.c	2010-04-09 15:34:25.000000000 +0900
@@ -61,6 +61,8 @@
    BONOBO_UI_VERB_END
 };
 
+static const char list_too_large[] =
+  "List too large, not showing anymore";
 
 /******************************************************************/
 void dbg (char *msg)
@@ -171,6 +173,8 @@
    GtkWidget *smenu, *menu_item, *tmp;
    GnomeVFSFileInfo *finfo;
    GList *f, *lst = NULL;
+   int list_too_large_p = 0;
+   size_t len_list_too_large = strlen (list_too_large) + 1;
 
    if (gnome_vfs_directory_list_load (&lst, (gchar *) selection,
                                       GNOME_VFS_FILE_INFO_DEFAULT |
@@ -212,19 +216,29 @@
       f = g_list_sort (lst, (GCompareFunc) cmp_finfo);
       while (f)
       {
+         size_t len;
+
          finfo = f->data;
          f = f->next;
          if (finfo->name[0] == '.') // don't show dot-files
             continue;
-         sprintf (buf, "%s/%s", (char *)selection, finfo->name);
-         strcpy (menubufptr, buf);
+
+         // sanity check
+         if (list_too_large_p) break;
+
+         snprintf (buf, MAX_BUF - 1, "%s/%s", (char *)selection, finfo->name);
+         len = strlen (buf) + 1;
+         if (menubufptr + len + len_list_too_large + 2 > menubuf + MEM_SIZE) // Cannot add anymore
+            list_too_large_p = 1;
+
+         strcpy (menubufptr, (list_too_large_p ? list_too_large : buf));
          p = menubufptr;
-         menubufptr += strlen (buf) + 1;
+         if (! list_too_large_p) menubufptr += len;
 
             /***
              * create submenu for directory entries
              ***/
-         if (finfo->type == GNOME_VFS_FILE_TYPE_DIRECTORY)
+         if ((finfo->type == GNOME_VFS_FILE_TYPE_DIRECTORY) && (!list_too_large_p))
          {
             menu_item = gtk_image_menu_item_new_with_label (finfo->name);
             gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menu_item),
@@ -247,7 +261,11 @@
          }
          else                   // normal files are just menu items
          {
-            menu_item = gtk_image_menu_item_new_with_label (finfo->name);
+           const char *new_entry = list_too_large_p ? list_too_large : finfo->name;
+           menu_item = gtk_image_menu_item_new_with_label (new_entry);
+
+           if (! list_too_large_p)
+           {
             gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menu_item),
                          gtk_image_new_from_icon_name
                          (gnome_icon_lookup (gtk_icon_theme_get_default (), 
@@ -262,7 +280,8 @@
             g_signal_connect_after (GTK_OBJECT (menu_item), "activate",
                                     GTK_SIGNAL_FUNC (display_file_dir),
                                     (gpointer) p);
-            gtk_menu_shell_append (GTK_MENU_SHELL (smenu), menu_item);
+            }
+           gtk_menu_shell_append (GTK_MENU_SHELL (smenu), menu_item);
          }
          gtk_widget_show (smenu);
          gtk_widget_show (menu_item);