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-rw-r--r--libcxx/include/array1
1 files changed, 1 insertions, 0 deletions
diff --git a/libcxx/include/array b/libcxx/include/array
index af199ca2e719..cb1a6d120258 100644
--- a/libcxx/include/array
+++ b/libcxx/include/array
@@ -534,6 +534,7 @@ _LIBCPP_END_NAMESPACE_STD
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <algorithm>
+# include <concepts>
# include <iterator>
# include <utility>
#endif