Warn circular dependency when loading types

Detect a circular dependency between two QML types and print a warning
message if found.

Task-number: QTBUG-83354
Change-Id: I826b28775ba3212ccccaeb56d50b64fec6f38ea9
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
(cherry picked from commit f0c08dc2175cffadb73e06d2cc69a152002e0df0)

1 files changed, 3 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmltypeloader/data/CircularDependencyBase.qml b/tests/auto/qml/qqmltypeloader/data/CircularDependencyBase.qml
new file mode 100644
index 0000000000..d068d1cabc
--- /dev/null
+++ b/tests/auto/qml/qqmltypeloader/data/CircularDependencyBase.qml
@@ -0,0 +1,3 @@
+import QtQml 2.0
+
+CircularDependency {}