From 3ea4f161cffb4d1374aa15839bf18b7b80502713 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Gr=C3=A4=C3=9Flin?= <mgraesslin@kde.org>
Date: Tue, 2 Feb 2016 16:40:21 +0100
Subject: [PATCH] [wayland] Delete cursor theme when internal connection
 terminates

Fixes a use-after-free reported by ASAN.
---
 abstract_backend.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/abstract_backend.cpp b/abstract_backend.cpp
index b1b477882c..566dd78396 100644
--- a/abstract_backend.cpp
+++ b/abstract_backend.cpp
@@ -95,6 +95,12 @@ void AbstractBackend::updateCursorImage(Qt::CursorShape shape)
         // check whether we can create it
         if (waylandServer() && waylandServer()->internalShmPool()) {
             m_cursorTheme = new WaylandCursorTheme(waylandServer()->internalShmPool(), this);
+            connect(waylandServer(), &WaylandServer::terminatingInternalClientConnection, this,
+                [this] {
+                    delete m_cursorTheme;
+                    m_cursorTheme = nullptr;
+                }
+            );
         }
     }
     if (!m_cursorTheme) {