Fix a crash with QGraphicsScene.

It happened when the scene gets deleted after ~QApplication has been
called.

test case:

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QGraphicsScene *scene = new QGraphicsScene(&a);
    return 0;
}

Reviewed-by: Gabi

1 files changed, 2 insertions, 1 deletions

diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index 655725b..1551944 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -1639,7 +1639,8 @@ QGraphicsScene::~QGraphicsScene()
     Q_D(QGraphicsScene);
 
     // Remove this scene from qApp's global scene list.
-    qApp->d_func()->scene_list.removeAll(this);
+    if (!QApplicationPrivate::is_app_closing)
+        qApp->d_func()->scene_list.removeAll(this);
 
     clear();