From a53f022393a1276dbf8eccbae04cb0bd6cea0160 Mon Sep 17 00:00:00 2001
From: Aleix Pol <aleixpol@kde.org>
Date: Mon, 6 Mar 2023 01:11:45 +0100
Subject: client: Do not cast placeholder screens to QWaylandScreen

It's wrong to C-cast an object to a class that isn't theirs. Check if it
is a placeholder first.

Pick-to: 5.15 6.2 6.5
Change-Id: I45d3c423422ae6638a033fb0f4cfefc7cd4460f0
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Reviewed-by: David Edmundson <davidedmundson@kde.org>
---
 src/client/qwaylandnativeinterface.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/client/qwaylandnativeinterface.cpp b/src/client/qwaylandnativeinterface.cpp
index 2c1cdb98..65272f3c 100644
--- a/src/client/qwaylandnativeinterface.cpp
+++ b/src/client/qwaylandnativeinterface.cpp
@@ -159,7 +159,7 @@ void *QWaylandNativeInterface::nativeResourceForScreen(const QByteArray &resourc
 {
     QByteArray lowerCaseResource = resourceString.toLower();
 
-    if (lowerCaseResource == "output")
+    if (lowerCaseResource == "output" && !screen->handle()->isPlaceholder())
         return ((QWaylandScreen *) screen->handle())->output();
 
     return nullptr;
-- 
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