From 9a2f11cc1fc9b0157e185b39abbd6a50c4cfc8cd Mon Sep 17 00:00:00 2001
From: Noel Grandin <noelgrandin@gmail.com>
Date: Mon, 30 Sep 2024 19:35:01 +0200
Subject: [PATCH] cid#1607861 Data race condition

Change-Id: Ib58f6613b98b2b778c9894359fe92b6fcf33298d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/174293
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
---
 include/dbaccess/AsynchronousLink.hxx | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/dbaccess/AsynchronousLink.hxx b/include/dbaccess/AsynchronousLink.hxx
index 22c40dc5b714..cd1af635c03a 100644
--- a/include/dbaccess/AsynchronousLink.hxx
+++ b/include/dbaccess/AsynchronousLink.hxx
@@ -38,7 +38,7 @@ namespace dbaui
     class OAsynchronousLink final
     {
         Link<void*,void>    m_aHandler;
-        std::mutex          m_aEventSafety;
+        mutable std::mutex  m_aEventSafety;
         std::mutex          m_aDestructionSafety;
         ImplSVEvent *       m_nEventId;
         DECL_LINK(OnAsyncCall, void*, void);
@@ -50,7 +50,11 @@ namespace dbaui
         OAsynchronousLink( const Link<void*,void>& _rHandler );
         ~OAsynchronousLink();
 
-        bool    IsRunning() const { return m_nEventId != nullptr; }
+        bool    IsRunning() const
+        {
+            std::unique_lock aEventGuard(m_aEventSafety);
+            return m_nEventId != nullptr;
+        }
 
         void Call( void* _pArgument = nullptr );
         void CancelCall();