From ab809d1dc35f8984eb2f64cac70956eb11598576 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Wed, 12 Jul 2023 15:49:11 -0400
Subject: [PATCH] buildertool: Exit orderly

The validate command does need a display connection,
for better or worse. So exit in an orderly fashion
if we don't have one, instead of crashing.

Fixes: #5948
---
 tools/gtk-builder-tool-validate.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/gtk-builder-tool-validate.c b/tools/gtk-builder-tool-validate.c
index 011b8b8d79..7cd0695b19 100644
--- a/tools/gtk-builder-tool-validate.c
+++ b/tools/gtk-builder-tool-validate.c
@@ -263,6 +263,12 @@ do_validate (int *argc, const char ***argv)
   };
   int i;
 
+  if (gdk_display_get_default () == NULL)
+    {
+      g_printerr (_("Could not initialize windowing system\n"));
+      exit (1);
+    }
+
   g_set_prgname ("gtk4-builder-tool validate");
   context = g_option_context_new (NULL);
   g_option_context_set_translation_domain (context, GETTEXT_PACKAGE);