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-rw-r--r--zen/thread.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/zen/thread.h b/zen/thread.h
index cffed5ed..440940ce 100644
--- a/zen/thread.h
+++ b/zen/thread.h
@@ -1,7 +1,7 @@
// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
-// * Copyright (C) ZenJu (zenju AT gmx DOT de) - All Rights Reserved *
+// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
// **************************************************************************
#ifndef BOOST_THREAD_WRAP_H
@@ -86,6 +86,10 @@ private:
//###################### implementation ######################
+#ifndef BOOST_HAS_THREADS
+#error just some paranoia check...
+#endif
+
template <class T, class Function> inline
auto async2(Function fun) -> boost::unique_future<T> //workaround VS2010 bug: bool (*fun)(); decltype(fun()) == int!
{
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