fix: don't dispatch events while closing

debian/changelog

@@ -1,3 +1,9 @@
+qt6-base (6.8.0+dfsg-0deepin38) unstable; urgency=medium
+
+  * Fix don't dispatch events while closing
+
+ -- zhanghongyuan <zhanghongyuan@uniontech.com>  Wed, 30 Sep 2026 14:12:52 +0800
+
 qt6-base (6.8.0+dfsg-0deepin37) unstable; urgency=medium
 
   * Fix crash when fontconfig fallback pattern has no charset.

debian/patches/Fix-do-not-dispatch-events-while-closing.patch

@@ -0,0 +1,36 @@
+Author: zhanghongyuan<zhanghongyuan@uniontech.com>
+Date:   Wed, 30 Sep 2026 14:04:31 +0800
+Subject: QCoreApplication: don't dispatch events while closing
+Upstream: https://codereview.qt-project.org/c/qt/qtbase/+/773760
+
+---
+
+Index: qt6-base/src/corelib/kernel/qcoreapplication.cpp
+===================================================================
+--- qt6-base.orig/src/corelib/kernel/qcoreapplication.cpp
++++ qt6-base/src/corelib/kernel/qcoreapplication.cpp
+@@ -958,12 +958,13 @@ QCoreApplication::~QCoreApplication()
+
+     qt_call_post_routines();
+
+-    self = nullptr;
+ #ifndef QT_NO_QOBJECT
+     QCoreApplicationPrivate::is_app_closing = true;
+     QCoreApplicationPrivate::is_app_running = false;
+ #endif
+
++    self = nullptr;
++
+ #if QT_CONFIG(thread)
+     // Synchronize and stop the global thread pool threads.
+     QThreadPool *globalThreadPool = nullptr;
+@@ -1157,6 +1158,9 @@ bool QCoreApplication::notifyInternal2(Q
+     QScopedScopeLevelCounter scopeLevelCounter(threadData);
+     if (!selfRequired)
+         return doNotify(receiver, event);
++        
++    if (QCoreApplicationPrivate::is_app_closing)
++        return false; // no event delivery while the application is closing
+
+ #if QT_VERSION >= QT_VERSION_CHECK(7, 0, 0)
+     if (threadData->thread.loadRelaxed() != QCoreApplicationPrivate::mainThread())

debian/patches/series

@@ -60,3 +60,4 @@ CVE-2026-78253_fix-stack-exhaustion-in-readElementText.patch
 CVE-2026-82292_guard-against-null-nodes-in-QDomBuilder.patch
 fix-ComboBox-Wheelevent.patch
 Fix-crash-when-fontconfig-fallback-pattern-has-no-charset.patch
+Fix-do-not-dispatch-events-while-closing.patch