From 4b12afced9c20a9314a630a3e46b103b204ae58f Mon Sep 17 00:00:00 2001
From: Vlad Zahorodnii <vlad.zahorodnii@kde.org>
Date: Mon, 26 Oct 2020 11:31:17 +0200
Subject: [PATCH] screencast: Handle the case where pipewire is not installed

If pipewire is not installed, pw_loop_new() may return a nullptr.

BUG: 427949
---
 screencast/pipewirecore.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/screencast/pipewirecore.cpp b/screencast/pipewirecore.cpp
index 32b480e54d..8742c814d2 100644
--- a/screencast/pipewirecore.cpp
+++ b/screencast/pipewirecore.cpp
@@ -56,6 +56,11 @@ void PipeWireCore::onCoreError(void* data, uint32_t id, int seq, int res, const
 bool PipeWireCore::init()
 {
     pwMainLoop = pw_loop_new(nullptr);
+    if (!pwMainLoop) {
+        qCWarning(KWIN_SCREENCAST, "Failed to create PipeWire loop: %s", strerror(errno));
+        m_error = i18n("Failed to start main PipeWire loop");
+        return false;
+    }
     pw_loop_enter(pwMainLoop);
 
     QSocketNotifier *notifier = new QSocketNotifier(pw_loop_get_fd(pwMainLoop), QSocketNotifier::Read, this);