Gracefully handle Accessible attached property on non-items

Attaching to e.g. a ApplicationWindow will result in corrupting the
window's private data and subsequent crashes.

Fixes: QTBUG-83738
Change-Id: Ia708edf29a0356a858ac27ff70125fc38932ba78
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 14 insertions, 1 deletions

diff --git a/tests/auto/quick/qquickaccessible/tst_qquickaccessible.cpp b/tests/auto/quick/qquickaccessible/tst_qquickaccessible.cpp
index 061d5f8a1a..0e6c3b3ad9 100644
--- a/tests/auto/quick/qquickaccessible/tst_qquickaccessible.cpp
+++ b/tests/auto/quick/qquickaccessible/tst_qquickaccessible.cpp
@@ -169,9 +169,22 @@ void tst_QQuickAccessible::quickAttachedProperties()
         delete object;
     }
 
-    // Attached property
+    // Attaching to non-item
     {
         QObject parent;
+        QTest::ignoreMessage(QtWarningMsg, "<Unknown File>: QML QtObject: Accessible must be attached to an Item");
+        QQuickAccessibleAttached *attachedObj = new QQuickAccessibleAttached(&parent);
+
+        QCOMPARE(attachedObj->ignored(), false);
+        attachedObj->setIgnored(true);
+        QCOMPARE(attachedObj->ignored(), false);
+        attachedObj->setIgnored(false);
+        QCOMPARE(attachedObj->ignored(), false);
+    }
+
+    // Attached property
+    {
+        QQuickItem parent;
         QQuickAccessibleAttached *attachedObj = new QQuickAccessibleAttached(&parent);
 
         attachedObj->name();