From 90dbb413bf78a86d8785e797df7b1558e72f99b8 Mon Sep 17 00:00:00 2001
From: Marc Mutz <marc.mutz@qt.io>
Date: Thu, 12 Jun 2025 21:14:09 +0200
Subject: [PATCH] QCoreApplication: relax an atomic load in a Q_ASSERT()

A Q_ASSERT() must not have side-effects, incl. ordering memory. So the
implicit loadAcquire() was too strong. The code must also work with
loadRelaxed(), so use that.

Amends the start of the public history.

Pick-to: 6.10
Change-Id: Ib94bd0989d1a358b552275dc3963b014e6e4c180
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
 src/corelib/kernel/qcoreapplication.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/corelib/kernel/qcoreapplication.cpp b/src/corelib/kernel/qcoreapplication.cpp
index 38db0a0f39e..3f7564e785c 100644
--- a/src/corelib/kernel/qcoreapplication.cpp
+++ b/src/corelib/kernel/qcoreapplication.cpp
@@ -1951,7 +1951,7 @@ void QCoreApplication::removePostedEvents(QObject *receiver, int eventType)
 
 #ifdef QT_DEBUG
     if (receiver && eventType == 0) {
-        Q_ASSERT(!receiver->d_func()->postedEvents);
+        Q_ASSERT(!receiver->d_func()->postedEvents.loadRelaxed());
     }
 #endif