From f2d150242907c3d5c20522ffff3a7e46330ec221 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tor=20Arne=20Vestb=C3=B8?= <tor.arne.vestbo@qt.io>
Date: Wed, 3 Nov 2021 16:35:57 +0100
Subject: [PATCH] iOS: Don't try to initialize a11y for views that have no
 platform window

The window may have been destroyed, but the UIView may still be
be referenced and kept alive by the a11y subsystem.

Pick-to: 6.2 5.15
Task-number: QTBUG-94530
Change-Id: I24f1c9d45e80c1bb4c92536e7f91533a94fd077f
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
---
 src/plugins/platforms/ios/quiview_accessibility.mm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/plugins/platforms/ios/quiview_accessibility.mm b/src/plugins/platforms/ios/quiview_accessibility.mm
index 6612dc131e..9a103509cc 100644
--- a/src/plugins/platforms/ios/quiview_accessibility.mm
+++ b/src/plugins/platforms/ios/quiview_accessibility.mm
@@ -66,6 +66,11 @@
 
 - (void)initAccessibility
 {
+    // The window may have gone away, but with the view
+    // temporarily caught in the a11y subsystem.
+    if (!self.platformWindow)
+        return;
+
     static bool init = false;
     if (!init)
         QGuiApplicationPrivate::platformIntegration()->accessibility()->setActive(true);