From a4199b808fd678f74935d540490eae9dc78a9ffe Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 13 Dec 2016 16:39:58 +0200
Subject: Fix thread safety issue

---
 butl/utility.cxx | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'butl/utility.cxx')

diff --git a/butl/utility.cxx b/butl/utility.cxx
index d6f418c..032d178 100644
--- a/butl/utility.cxx
+++ b/butl/utility.cxx
@@ -6,5 +6,12 @@
 
 namespace butl
 {
+#ifndef BUTL_CXX17_UNCAUGHT_EXCEPTIONS
+#ifdef BUTL_CXX11_THREAD_LOCAL
+  thread_local
+#else
+  __thread
+#endif
   bool exception_unwinding_dtor = false;
+#endif
 }
-- 
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