From bc8a90b33ac421c650e50182e73f2c1125edaaf0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lukas=20D=C3=BCrrenberger?= <eXpl0it3r@sfml-dev.org>
Date: Tue, 1 Aug 2017 17:49:14 +0200
Subject: [PATCH] Fix an issue when sf::Clock is constructed in a global scope
 leading to crashes.

---
 src/SFML/System/Win32/ClockImpl.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/SFML/System/Win32/ClockImpl.cpp b/src/SFML/System/Win32/ClockImpl.cpp
index 8098a7d4..79acc0c9 100644
--- a/src/SFML/System/Win32/ClockImpl.cpp
+++ b/src/SFML/System/Win32/ClockImpl.cpp
@@ -33,8 +33,6 @@
 
 namespace
 {
-    sf::Mutex oldWindowsMutex;
-
     LARGE_INTEGER getFrequency()
     {
         LARGE_INTEGER frequency;
@@ -67,6 +65,8 @@ Time ClockImpl::getCurrentTime()
 
     if (oldWindows)
     {
+        static sf::Mutex oldWindowsMutex;
+
         // Acquire a lock (CRITICAL_SECTION) to prevent travelling back in time
         Lock lock(oldWindowsMutex);