output/xdg-output: avoid sending events to released globals

ref #6835

src/protocols/XDGOutput.cpp

@@ -51,6 +51,8 @@ void CXDGOutputProtocol::onManagerGetXDGOutput(CZxdgOutputManagerV1* mgr, uint32
 #endif
     pXDGOutput->client = CLIENT;
 
+    pXDGOutput->outputProto = OUTPUT->owner;
+
     if (!pXDGOutput->resource->resource()) {
         m_vXDGOutputs.pop_back();
         mgr->noMemory();
@@ -104,7 +106,7 @@ CXDGOutput::CXDGOutput(SP<CZxdgOutputV1> resource_, SP<CMonitor> monitor_) : mon
 void CXDGOutput::sendDetails() {
     static auto PXWLFORCESCALEZERO = CConfigValue<Hyprlang::INT>("xwayland:force_zero_scaling");
 
-    if (!monitor)
+    if (!monitor || !outputProto || outputProto->isDefunct())
         return;
 
     const auto POS = isXWayland ? monitor->vecXWaylandPosition : monitor->vecPosition;

src/protocols/XDGOutput.hpp

@@ -6,6 +6,7 @@
 
 class CMonitor;
 class CXDGOutputProtocol;
+class CWLOutputProtocol;
 
 class CXDGOutput {
   public:
@@ -16,6 +17,7 @@ class CXDGOutput {
   private:
     WP<CMonitor>            monitor;
     SP<CZxdgOutputV1>       resource;
+    WP<CWLOutputProtocol>   outputProto;
 
     std::optional<Vector2D> overridePosition;
 

src/protocols/core/Output.cpp

@@ -47,7 +47,7 @@ SP<CWlOutput> CWLOutputResource::getResource() {
 }
 
 void CWLOutputResource::updateState() {
-    if (!monitor || (owner && owner->defunct))
+    if (!monitor || !owner || owner->defunct)
         return;
 
     if (resource->version() >= 2)
@@ -119,6 +119,9 @@ bool CWLOutputProtocol::isDefunct() {
 }
 
 void CWLOutputProtocol::sendDone() {
+    if (defunct)
+        return;
+
     for (auto const& r : m_vOutputs) {
         r->resource->sendDone();
     }