Do not permit excessive recursion in component creation

Limit recursion during component creation to prevent infinite
recursion resulting in a crash.  Recursion results from invoking
createObject() in the Component.onCompleted handler.

Task-number: QTBUG-25439
Change-Id: Ica2ba099d82b5747c938501af04e67f7ace8402e
Reviewed-by: Michael Brasser <michael.brasser@nokia.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmlcomponent/data/RecursiveComponent.qml b/tests/auto/qml/qqmlcomponent/data/RecursiveComponent.qml
new file mode 100644
index 0000000000..eec17a772d
--- /dev/null
+++ b/tests/auto/qml/qqmlcomponent/data/RecursiveComponent.qml
@@ -0,0 +1,10 @@
+import QtQuick 2.0
+
+Item {
+    id: inner
+    property Item innermost: null
+
+    Component.onCompleted: {
+        innermost = Qt.createComponent("./RecursiveComponent.qml").createObject();
+    }
+}