From 9b165a3487cd0d0efd5056118ad816fa27dccd79 Mon Sep 17 00:00:00 2001
From: Thiago Macieira <thiago.macieira@intel.com>
Date: Thu, 22 Apr 2021 08:08:49 -0700
Subject: [PATCH] QDuplicateTracker: store the current seed in the hasher

It's allowed to change asynchronously by another thread.

Change-Id: I6cdea00671e8479b9c50fffd167836a08a42cc1d
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
(cherry picked from commit 3458dd2d4773de379ea4c8309096d6e2cfd8a339)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/corelib/tools/qduplicatetracker_p.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/corelib/tools/qduplicatetracker_p.h b/src/corelib/tools/qduplicatetracker_p.h
index c21b67ffa34..b457d9e499e 100644
--- a/src/corelib/tools/qduplicatetracker_p.h
+++ b/src/corelib/tools/qduplicatetracker_p.h
@@ -67,8 +67,9 @@ class QDuplicateTracker {
 #ifdef __cpp_lib_memory_resource
     template <typename HT>
     struct QHasher {
+        size_t storedSeed = qGlobalQHashSeed();
         size_t operator()(const HT &t) const {
-            return QHashPrivate::calculateHash(t, qGlobalQHashSeed());
+            return QHashPrivate::calculateHash(t, storedSeed);
         }
     };