Fixes sub-attaq segfault when pausing

The sub-attaq's animation manager was accessing a deleted animation.

Task-number: QTBUG-5646
Reviewed-by: thierry
(cherry picked from commit 75f264cc6c47493f26ee81c783d1f9b64310c1d6)

2 files changed, 10 insertions, 0 deletions

diff --git a/demos/sub-attaq/animationmanager.cpp b/demos/sub-attaq/animationmanager.cpp
index eb5a125..b3fc8e1 100644
--- a/demos/sub-attaq/animationmanager.cpp
+++ b/demos/sub-attaq/animationmanager.cpp
@@ -62,11 +62,18 @@ AnimationManager *AnimationManager::self()
 
 void AnimationManager::registerAnimation(QAbstractAnimation *anim)
 {
+    QObject::connect(anim, SIGNAL(destroyed(QObject*)), this, SLOT(unregisterAnimation_helper(QObject*)));
     animations.append(anim);
 }
 
+void AnimationManager::unregisterAnimation_helper(QObject *obj)
+{
+    unregisterAnimation(static_cast<QAbstractAnimation*>(obj));
+}
+
 void AnimationManager::unregisterAnimation(QAbstractAnimation *anim)
 {
+    QObject::disconnect(anim, SIGNAL(destroyed(QObject*)), this, SLOT(unregisterAnimation_helper(QObject*)));
     animations.removeAll(anim);
 }
 
diff --git a/demos/sub-attaq/animationmanager.h b/demos/sub-attaq/animationmanager.h
index 8db13eb..48d84d1 100644
--- a/demos/sub-attaq/animationmanager.h
+++ b/demos/sub-attaq/animationmanager.h
@@ -62,6 +62,9 @@ public slots:
     void pauseAll();
     void resumeAll();
 
+private slots:
+    void unregisterAnimation_helper(QObject *obj);
+
 private:
     static AnimationManager *instance;
     QList<QAbstractAnimation *> animations;