fix nesting of namespace and standard-version check. Also include <__config> git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@337809 91177308-0d34-0410-b5e6-96231b3b80d8 
diff --git a/include/span b/include/span index b1a13dd..db8f836 100644 --- a/include/span +++ b/include/span 
@@ -140,6 +140,7 @@    */   +#include <__config>  #include <cstddef> // for ptrdiff_t  #include <iterator> // for iterators  #include <array> // for array @@ -600,7 +601,8 @@  template<class _Container>  span(const _Container&) -> span<const typename _Container::value_type>;   +#endif // _LIBCPP_STD_VER > 17 +  _LIBCPP_END_NAMESPACE_STD   -#endif // _LIBCPP_STD_VER > 17  #endif // _LIBCPP_SPAN