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-rw-r--r--boost/intrusive/detail/tree_node.hpp6
1 files changed, 5 insertions, 1 deletions
diff --git a/boost/intrusive/detail/tree_node.hpp b/boost/intrusive/detail/tree_node.hpp
index 653d6fc..e36a82a 100644
--- a/boost/intrusive/detail/tree_node.hpp
+++ b/boost/intrusive/detail/tree_node.hpp
@@ -13,7 +13,11 @@
#ifndef BOOST_INTRUSIVE_TREE_NODE_HPP
#define BOOST_INTRUSIVE_TREE_NODE_HPP
-#if defined(_MSC_VER)
+#ifndef BOOST_CONFIG_HPP
+# include <boost/config.hpp>
+#endif
+
+#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif