Fix a crash in animation groups when deleting uncontrolled animations

The problem was that we were not removing their references from the
private object hash and at some point we could access it.

Task-number: QTBUG-8910
Reviewed-by: gabi

1 files changed, 16 insertions, 1 deletions

diff --git a/tests/auto/qparallelanimationgroup/tst_qparallelanimationgroup.cpp b/tests/auto/qparallelanimationgroup/tst_qparallelanimationgroup.cpp
index fb0f3e0780..d2d86fb994 100644
--- a/tests/auto/qparallelanimationgroup/tst_qparallelanimationgroup.cpp
+++ b/tests/auto/qparallelanimationgroup/tst_qparallelanimationgroup.cpp
@@ -75,6 +75,8 @@ private slots:
     void loopCount();
     void autoAdd();
     void pauseResume();
+
+    void QTBUG8910_crashWhenRemovingUncontrolledAnimation();
 };
 
 tst_QParallelAnimationGroup::tst_QParallelAnimationGroup()
@@ -999,9 +1001,22 @@ void tst_QParallelAnimationGroup::pauseResume()
     QCOMPARE(spy.count(), 2); //this shouldn't have changed
     group.resume();
     QCOMPARE(spy.count(), 2); //this shouldn't have changed
+}
 
 
-
+void tst_QParallelAnimationGroup::QTBUG8910_crashWhenRemovingUncontrolledAnimation()
+{
+    QParallelAnimationGroup group;
+    TestAnimation *anim = new TestAnimation;
+    anim->setLoopCount(-1);
+    TestAnimation *anim2 = new TestAnimation;
+    anim2->setLoopCount(-1);
+    group.addAnimation(anim);
+    group.addAnimation(anim2);
+    group.start();
+    delete anim;
+    // it would crash here because the internals of the group would still have a reference to anim
+    delete anim2;
 }