Fixed assert during QML shutdown

Change-Id: I680af9ccb417d3162277b5740a129ecd77feee7f
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/declarative/items/qquickcanvas.cpp b/src/declarative/items/qquickcanvas.cpp
index dfdaaed22d..d5003e9321 100644
--- a/src/declarative/items/qquickcanvas.cpp
+++ b/src/declarative/items/qquickcanvas.cpp
@@ -864,6 +864,12 @@ QQuickCanvas::~QQuickCanvas()
 {
     Q_D(QQuickCanvas);
 
+    /* The threaded renderer will clean up the nodes which will fire
+       sceneGraphChanged events through back to the canvas. This signal
+       is connected to maybeUpdate which should only be called from GUI or during
+       updatePaintNode(), so disconnect them before starting the shutdown
+     */
+    disconnect(d->context->renderer(), SIGNAL(sceneGraphChanged()), this, SLOT(maybeUpdate()));
     if (d->thread->isRunning()) {
         d->thread->stopRendering();
         delete d->thread;