From 566223b190d5cd471d47bdd25cdf009fa01073f2 Mon Sep 17 00:00:00 2001
From: Xaver Hugl <xaver.hugl@gmail.com>
Date: Mon, 16 Aug 2021 03:11:30 +0200
Subject: [PATCH] platforms/drm: fix crashing debug operator

---
 src/plugins/platforms/drm/drm_object.cpp | 10 ++++++++--
 src/plugins/platforms/drm/drm_object.h   |  2 +-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/plugins/platforms/drm/drm_object.cpp b/src/plugins/platforms/drm/drm_object.cpp
index 4f6ca38ad2..8f09ef4277 100644
--- a/src/plugins/platforms/drm/drm_object.cpp
+++ b/src/plugins/platforms/drm/drm_object.cpp
@@ -339,7 +339,13 @@ void DrmObject::Property::initEnumMap(drmModePropertyRes *prop)
 
 }
 
-QDebug& operator<<(QDebug& s, const KWin::DrmObject *obj)
+QDebug operator<<(QDebug s, const KWin::DrmObject *obj)
 {
-    return s.nospace() << "DrmObject(" << obj->id() << ", gpu: "<< obj->gpu() << ')';
+    QDebugStateSaver saver(s);
+    if (obj) {
+        s.nospace() << "DrmObject(id=" << obj->id() << ", gpu="<< obj->gpu() << ')';
+    } else {
+        s << "DrmObject(0x0)";
+    }
+    return s;
 }
diff --git a/src/plugins/platforms/drm/drm_object.h b/src/plugins/platforms/drm/drm_object.h
index 6a520d858c..9ead3af331 100644
--- a/src/plugins/platforms/drm/drm_object.h
+++ b/src/plugins/platforms/drm/drm_object.h
@@ -211,4 +211,4 @@ private:
 
 }
 
-QDebug& operator<<(QDebug& stream, const KWin::DrmObject*);
+QDebug operator<<(QDebug stream, const KWin::DrmObject*);