Required properties: Allow retroactive require specification

It is now possible to mark a property of a parent class as required in
the child by writing required <propertyName>

Change-Id: I9e9d58c7b5c00577b056e905b39744b2fa359ea0
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

1 files changed, 3 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmllanguage/data/RequiredBase.qml b/tests/auto/qml/qqmllanguage/data/RequiredBase.qml
new file mode 100644
index 0000000000..4effdbf1c7
--- /dev/null
+++ b/tests/auto/qml/qqmllanguage/data/RequiredBase.qml
@@ -0,0 +1,3 @@
+NonRequiredBase {
+    required i
+}