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-rw-r--r--libcxx/include/experimental/unordered_set4
1 files changed, 3 insertions, 1 deletions
diff --git a/libcxx/include/experimental/unordered_set b/libcxx/include/experimental/unordered_set
index f09b0bd57d9f..509f3ec1044e 100644
--- a/libcxx/include/experimental/unordered_set
+++ b/libcxx/include/experimental/unordered_set
@@ -9,6 +9,7 @@
#ifndef _LIBCPP_EXPERIMENTAL_UNORDERED_SET
#define _LIBCPP_EXPERIMENTAL_UNORDERED_SET
+
/*
experimental/unordered_set synopsis
@@ -33,12 +34,13 @@ namespace pmr {
*/
+#include <__assert> // all public C++ headers provide the assertion handler
#include <experimental/__config>
#include <experimental/memory_resource>
#include <unordered_set>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#pragma GCC system_header
+# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_LFTS_PMR