From 586240d2f8ef5408c24b5636047487e844f309ee Mon Sep 17 00:00:00 2001
From: Philip Withnall <philip.withnall@collabora.co.uk>
Date: Wed, 20 Nov 2013 17:18:16 +0000
Subject: [PATCH] gdkwindow: Fix potential NULL pointer dereference
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gdk_window_ensure_native() can end up with a NULL parent pointer, which
it passes to find_native_parent_above()…but that expects a non-NULL
parent.

Found with scan-build.

https://bugzilla.gnome.org/show_bug.cgi?id=712760
---
 gdk/gdkwindow.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 9ab1f8a80d..a5174a75d0 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -1110,6 +1110,9 @@ find_native_sibling_above (GdkWindow *parent,
 {
   GdkWindow *w;
 
+  if (!parent)
+    return NULL;
+
   w = find_native_sibling_above_helper (parent, child);
   if (w)
     return w;
-- 
2.30.2