From 732716ba95f02e2613b4f379fd0d8f51f5e8a9a9 Mon Sep 17 00:00:00 2001
From: Benjamin Otte <otte@redhat.com>
Date: Wed, 19 Feb 2020 01:20:19 +0100
Subject: [PATCH] debug: When debug-printing, treat NULL as the default display

Otherwise we lose debug prints from all code that allows NULL displays.
---
 gtk/gtkmain.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gtk/gtkmain.c b/gtk/gtkmain.c
index 631c308e2d..394cd04232 100644
--- a/gtk/gtkmain.c
+++ b/gtk/gtkmain.c
@@ -687,6 +687,9 @@ gtk_get_display_debug_flags (GdkDisplay *display)
 {
   gint i;
 
+  if (display == NULL)
+    display = gdk_display_get_default ();
+
   for (i = 0; i < N_DEBUG_DISPLAYS; i++)
     {
       if (debug_flags[i].display == display)