From 5222dc0cd13663d6134d04ca4547680b2d282cc2 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Mon, 13 Dec 2021 13:52:50 -0500
Subject: [PATCH] buildertool: Fix a possible crash

We need to call g_markup_parse_context_end_parse
to catch incomplete documents that we might not
handle well later.
---
 tools/gtk-builder-tool-simplify.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/gtk-builder-tool-simplify.c b/tools/gtk-builder-tool-simplify.c
index dfa4eb7097..404a38b2d7 100644
--- a/tools/gtk-builder-tool-simplify.c
+++ b/tools/gtk-builder-tool-simplify.c
@@ -2295,6 +2295,12 @@ simplify_file (const char *filename,
       return FALSE;
     }
 
+  if (!g_markup_parse_context_end_parse (context, &error))
+    {
+      g_printerr (_("Can't parse “%s”: %s\n"), filename, error->message);
+      return FALSE;
+    }
+
   data.builder = gtk_builder_new ();
 
   if (data.convert3to4)