From 98d47b57bffd545ab32e656ab91740a89baac992 Mon Sep 17 00:00:00 2001
From: John Ralls <jralls@ceridwen.us>
Date: Sat, 26 Jun 2010 18:17:30 +0200
Subject: [PATCH] Bug 622333 - Crash in
 gdk_window_impl_quartz_begin_paint_region

(cherry picked from commit 093a867e51b383b5c1877415b410cc3c122c72da)
---
 gdk/quartz/gdkwindow-quartz.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gdk/quartz/gdkwindow-quartz.c b/gdk/quartz/gdkwindow-quartz.c
index 8de986c52d..da4e8c94e1 100644
--- a/gdk/quartz/gdkwindow-quartz.c
+++ b/gdk/quartz/gdkwindow-quartz.c
@@ -259,6 +259,9 @@ gdk_window_impl_quartz_begin_paint_region (GdkPaintable    *paintable,
 
   gdk_region_get_rectangles (clipped_and_offset_region, &rects, &n_rects);
 
+  if (n_rects == 0)
+    goto done;
+
   if (bg_pixmap == NULL)
     {
       CGContextRef cg_context;