gentoo-overlay/x11-wm/mutter/files/mutter-3.18.2-logical-monitors.patch

From 958cdd5117cd2056076edc6cc52af1a3a929d262 Mon Sep 17 00:00:00 2001
From: Rui Matos <tiagomatos@gmail.com>
Date: Fri, 3 Jul 2015 18:01:14 +0200
Subject: monitor-manager: Fix the max potential number of logical monitors

The max potential number of logical monitors (i.e. MetaMonitorInfos)
is the number of CRTCs, not the number of outputs.

In cases where we have more enabled CRTCs than connected outputs we
would end up appending more MetaMonitorInfos to the GArray than the
size it was initialized with which means the array would get
re-allocated rendering invalid some MetaCRTC->logical_monitor pointers
assigned previously and thus ending in crashes later on.

https://bugzilla.gnome.org/show_bug.cgi?id=751638
---
 src/backends/meta-monitor-manager.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backends/meta-monitor-manager.c b/src/backends/meta-monitor-manager.c
index 38ccc72..56a52bb 100644
--- a/src/backends/meta-monitor-manager.c
+++ b/src/backends/meta-monitor-manager.c
@@ -178,7 +178,7 @@ make_logical_config (MetaMonitorManager *manager)
   unsigned int i, j;
 
   monitor_infos = g_array_sized_new (FALSE, TRUE, sizeof (MetaMonitorInfo),
-                                     manager->n_outputs);
+                                     manager->n_crtcs);
 
   /* Walk the list of MetaCRTCs, and build a MetaMonitorInfo
      for each of them, unless they reference a rectangle that
-- 
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