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-rw-r--r--boost/align/aligned_alloc.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/boost/align/aligned_alloc.hpp b/boost/align/aligned_alloc.hpp
index 1d81a13372..b5b6bd8595 100644
--- a/boost/align/aligned_alloc.hpp
+++ b/boost/align/aligned_alloc.hpp
@@ -38,7 +38,7 @@ Distributed under the Boost Software License, Version 1.0.
#include <boost/align/detail/aligned_alloc_posix.hpp>
#elif defined(sun) || defined(__sun)
#include <boost/align/detail/aligned_alloc_sunos.hpp>
-#elif (_POSIX_C_SOURCE >= 200112L) || (_XOPEN_SOURCE >= 600)
+#elif defined(_POSIX_VERSION)
#include <boost/align/detail/aligned_alloc_posix.hpp>
#else
#include <boost/align/detail/aligned_alloc.hpp>