1 files changed, 21 insertions, 0 deletions
diff --git a/src/third_party/boost-1.69.0/boost/coroutine/flags.hpp b/src/third_party/boost-1.69.0/boost/coroutine/flags.hpp
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index 00000000000..81940f30e5a
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+++ b/src/third_party/boost-1.69.0/boost/coroutine/flags.hpp
@@ -0,0 +1,21 @@
+
+//          Copyright Oliver Kowalke 2009.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE_1_0.txt or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_COROUTINES_FLAGS_H
+#define BOOST_COROUTINES_FLAGS_H
+
+namespace boost {
+namespace coroutines {
+
+enum flag_unwind_t
+{
+    stack_unwind = 0,
+    no_stack_unwind
+};
+
+}}
+
+#endif // BOOST_COROUTINES_FLAGS_H