1 files changed, 6 insertions, 0 deletions
diff --git a/src/corelib/kernel/qobject_p.h b/src/corelib/kernel/qobject_p.h
index 1b0706e356..149c6a03a6 100644
--- a/src/corelib/kernel/qobject_p.h
+++ b/src/corelib/kernel/qobject_p.h
@@ -125,6 +125,12 @@ public:
         QObjectPrivate *parent;
     };
 
+    void ensureExtraData()
+    {
+        if (!extraData)
+            extraData = new ExtraData(this);
+    }
+
     typedef void (*StaticMetaCallFunction)(QObject *, QMetaObject::Call, int, void **);
     struct Connection;
     struct SignalVector;