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@@ -121,7 +121,7 @@ using std::atomic_signal_fence // see below
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# pragma GCC system_header
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#endif
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-#if _LIBCPP_STD_VER > 20
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+#if defined(__cplusplus) && _LIBCPP_STD_VER >= 23
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#include <atomic>
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#include <version>
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@@ -230,6 +230,6 @@ using std::atomic_thread_fence _LIBCPP_USING_IF_EXISTS;
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# include_next <stdatomic.h>
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# endif
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-#endif // _LIBCPP_STD_VER > 20
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+#endif // defined(__cplusplus) && _LIBCPP_STD_VER >= 23
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#endif // _LIBCPP_STDATOMIC_H
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mikhnenko