From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 18 Dec 2015 09:24:27 +0000 (+0200)
Subject: Don't try to create a mask out of null rects
X-Git-Url: http://git.tdb.fi/?p=geometrycompositor.git;a=commitdiff_plain;h=e971e3d263563d25fec184168b7a200160c632ff

Don't try to create a mask out of null rects

This may happen if the window is destroyed at just the right moment.
---

diff --git a/source/main.c b/source/main.c
index f7688b9..cd2f1ac 100644
--- a/source/main.c
+++ b/source/main.c
@@ -422,6 +422,8 @@ void update_window_mask(Compositor *compositor, CompositedWindow *window)
 		return;
 
 	rects = XShapeGetRectangles(compositor->display, window->window, ShapeBounding, &rect_count, &rect_order);
+	if(!rects)
+		return;
 
 	width = window->width+2*window->border;
 	height = window->height+2*window->border;