From 036dfd7adb8a907150399b32f1e354b5e266abbc Mon Sep 17 00:00:00 2001
From: Andreas Fabri <andreas.fabri@geometryfactory.com>
Date: Wed, 21 Feb 2018 14:17:10 +0000
Subject: [PATCH] yet another CGAL_STATIC_THREAD_LOCAL_VARIABLE

---
 Number_types/include/CGAL/constant.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Number_types/include/CGAL/constant.h b/Number_types/include/CGAL/constant.h
index b47160ed63b..d692ac947fb 100644
--- a/Number_types/include/CGAL/constant.h
+++ b/Number_types/include/CGAL/constant.h
@@ -23,6 +23,7 @@
 #define CGAL_CONSTANT_H
 
 #include <CGAL/config.h>
+#include <CGAL/tss.h>
 
 namespace CGAL {
 
@@ -34,7 +35,7 @@ inline
 const T&
 constant()
 {
-  static const T t(i);
+  const CGAL_STATIC_THREAD_LOCAL_VARIABLE(T, t,i);
   return t;
 }