From bb74d263e25720dc3f4103df489853739de1bd9f Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Sun, 12 Feb 2023 08:52:09 +0100
Subject: Wayland: add necessary check to support OWL

---
 src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx b/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
index 88a199e50..9bdee61b0 100644
--- a/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
+++ b/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
@@ -1412,6 +1412,7 @@ int Fl_Wayland_Screen_Driver::screen_num_unscaled(int x, int y)
 
 float Fl_Wayland_Screen_Driver::scale(int n) {
   Fl_Wayland_Screen_Driver::output *output;
+  if (wl_list_length(&outputs) == 0) return 1; // necessary under OWL
   int i = 0;
   wl_list_for_each(output, &outputs, link) {
     if (i++ == n) break;
-- 
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