From 894b1ae76a32720f4bb3d39cf460402e3ce331d6 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Sat, 29 Jun 2013 22:06:54 -0400
Subject: Avoid integer overflow

Use g_malloc_n in gdk_cairo_set_source_pixbuf when allocating
a large block of memory, to avoid integer overflow.

Pointed out by Bert Massop in
https://bugzilla.gnome.org/show_bug.cgi?id=703220

Index: gtk+-2.24.29/gdk/gdkcairo.c
===================================================================
--- gtk+-2.24.29/gdk/gdkcairo.c
+++ gtk+-2.24.29/gdk/gdkcairo.c	2016-02-11 23:25:11.380927480 +0200
@@ -211,7 +211,7 @@
     format = CAIRO_FORMAT_ARGB32;
 
   cairo_stride = cairo_format_stride_for_width (format, width);
-  cairo_pixels = g_malloc (height * cairo_stride);
+  cairo_pixels = g_malloc_n (height, cairo_stride);
   surface = cairo_image_surface_create_for_data ((unsigned char *)cairo_pixels,
                                                  format,
                                                  width, height, cairo_stride);