diff --git a/libcxx/include/__algorithm/adjacent_find.h b/libcxx/include/__algorithm/adjacent_find.h
--- a/libcxx/include/__algorithm/adjacent_find.h
+++ b/libcxx/include/__algorithm/adjacent_find.h
@@ -16,10 +16,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Iter, class _Sent, class _BinaryPredicate>
diff --git a/libcxx/include/__algorithm/all_of.h b/libcxx/include/__algorithm/all_of.h
--- a/libcxx/include/__algorithm/all_of.h
+++ b/libcxx/include/__algorithm/all_of.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _Predicate>
diff --git a/libcxx/include/__algorithm/any_of.h b/libcxx/include/__algorithm/any_of.h
--- a/libcxx/include/__algorithm/any_of.h
+++ b/libcxx/include/__algorithm/any_of.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _Predicate>
diff --git a/libcxx/include/__algorithm/binary_search.h b/libcxx/include/__algorithm/binary_search.h
--- a/libcxx/include/__algorithm/binary_search.h
+++ b/libcxx/include/__algorithm/binary_search.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _ForwardIterator, class _Tp, class _Compare>
diff --git a/libcxx/include/__algorithm/clamp.h b/libcxx/include/__algorithm/clamp.h
--- a/libcxx/include/__algorithm/clamp.h
+++ b/libcxx/include/__algorithm/clamp.h
@@ -13,10 +13,6 @@
 #include <__assert>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__algorithm/comp.h b/libcxx/include/__algorithm/comp.h
--- a/libcxx/include/__algorithm/comp.h
+++ b/libcxx/include/__algorithm/comp.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/predicate_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 struct __equal_to {
diff --git a/libcxx/include/__algorithm/comp_ref_type.h b/libcxx/include/__algorithm/comp_ref_type.h
--- a/libcxx/include/__algorithm/comp_ref_type.h
+++ b/libcxx/include/__algorithm/comp_ref_type.h
@@ -13,10 +13,6 @@
 #include <__debug>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Compare>
diff --git a/libcxx/include/__algorithm/copy.h b/libcxx/include/__algorithm/copy.h
--- a/libcxx/include/__algorithm/copy.h
+++ b/libcxx/include/__algorithm/copy.h
@@ -19,10 +19,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__algorithm/copy_backward.h b/libcxx/include/__algorithm/copy_backward.h
--- a/libcxx/include/__algorithm/copy_backward.h
+++ b/libcxx/include/__algorithm/copy_backward.h
@@ -19,10 +19,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__algorithm/copy_if.h b/libcxx/include/__algorithm/copy_if.h
--- a/libcxx/include/__algorithm/copy_if.h
+++ b/libcxx/include/__algorithm/copy_if.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template<class _InputIterator, class _OutputIterator, class _Predicate>
diff --git a/libcxx/include/__algorithm/copy_move_common.h b/libcxx/include/__algorithm/copy_move_common.h
--- a/libcxx/include/__algorithm/copy_move_common.h
+++ b/libcxx/include/__algorithm/copy_move_common.h
@@ -26,10 +26,6 @@
 #include <__utility/pair.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Type traits.
diff --git a/libcxx/include/__algorithm/copy_n.h b/libcxx/include/__algorithm/copy_n.h
--- a/libcxx/include/__algorithm/copy_n.h
+++ b/libcxx/include/__algorithm/copy_n.h
@@ -15,10 +15,6 @@
 #include <__type_traits/enable_if.h>
 #include <__utility/convert_to_integral.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template<class _InputIterator, class _Size, class _OutputIterator>
diff --git a/libcxx/include/__algorithm/count.h b/libcxx/include/__algorithm/count.h
--- a/libcxx/include/__algorithm/count.h
+++ b/libcxx/include/__algorithm/count.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _Tp>
diff --git a/libcxx/include/__algorithm/count_if.h b/libcxx/include/__algorithm/count_if.h
--- a/libcxx/include/__algorithm/count_if.h
+++ b/libcxx/include/__algorithm/count_if.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _Predicate>
diff --git a/libcxx/include/__algorithm/equal.h b/libcxx/include/__algorithm/equal.h
--- a/libcxx/include/__algorithm/equal.h
+++ b/libcxx/include/__algorithm/equal.h
@@ -26,10 +26,6 @@
 #include <__type_traits/predicate_traits.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
diff --git a/libcxx/include/__algorithm/equal_range.h b/libcxx/include/__algorithm/equal_range.h
--- a/libcxx/include/__algorithm/equal_range.h
+++ b/libcxx/include/__algorithm/equal_range.h
@@ -27,10 +27,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare, class _Iter, class _Sent, class _Tp, class _Proj>
diff --git a/libcxx/include/__algorithm/fill.h b/libcxx/include/__algorithm/fill.h
--- a/libcxx/include/__algorithm/fill.h
+++ b/libcxx/include/__algorithm/fill.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // fill isn't specialized for std::memset, because the compiler already optimizes the loop to a call to std::memset.
diff --git a/libcxx/include/__algorithm/fill_n.h b/libcxx/include/__algorithm/fill_n.h
--- a/libcxx/include/__algorithm/fill_n.h
+++ b/libcxx/include/__algorithm/fill_n.h
@@ -13,10 +13,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/convert_to_integral.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // fill_n isn't specialized for std::memset, because the compiler already optimizes the loop to a call to std::memset.
diff --git a/libcxx/include/__algorithm/find.h b/libcxx/include/__algorithm/find.h
--- a/libcxx/include/__algorithm/find.h
+++ b/libcxx/include/__algorithm/find.h
@@ -21,10 +21,6 @@
 #  include <cwchar>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Iter, class _Sent, class _Tp, class _Proj>
diff --git a/libcxx/include/__algorithm/find_end.h b/libcxx/include/__algorithm/find_end.h
--- a/libcxx/include/__algorithm/find_end.h
+++ b/libcxx/include/__algorithm/find_end.h
@@ -22,10 +22,6 @@
 #include <__iterator/reverse_iterator.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <
diff --git a/libcxx/include/__algorithm/find_first_of.h b/libcxx/include/__algorithm/find_first_of.h
--- a/libcxx/include/__algorithm/find_first_of.h
+++ b/libcxx/include/__algorithm/find_first_of.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
diff --git a/libcxx/include/__algorithm/find_if.h b/libcxx/include/__algorithm/find_if.h
--- a/libcxx/include/__algorithm/find_if.h
+++ b/libcxx/include/__algorithm/find_if.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _Predicate>
diff --git a/libcxx/include/__algorithm/find_if_not.h b/libcxx/include/__algorithm/find_if_not.h
--- a/libcxx/include/__algorithm/find_if_not.h
+++ b/libcxx/include/__algorithm/find_if_not.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _Predicate>
diff --git a/libcxx/include/__algorithm/for_each.h b/libcxx/include/__algorithm/for_each.h
--- a/libcxx/include/__algorithm/for_each.h
+++ b/libcxx/include/__algorithm/for_each.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _Function>
diff --git a/libcxx/include/__algorithm/for_each_n.h b/libcxx/include/__algorithm/for_each_n.h
--- a/libcxx/include/__algorithm/for_each_n.h
+++ b/libcxx/include/__algorithm/for_each_n.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__utility/convert_to_integral.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__algorithm/for_each_segment.h b/libcxx/include/__algorithm/for_each_segment.h
--- a/libcxx/include/__algorithm/for_each_segment.h
+++ b/libcxx/include/__algorithm/for_each_segment.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__iterator/segmented_iterator.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // __for_each_segment is a utility function for optimizing iterating over segmented iterators linearly.
diff --git a/libcxx/include/__algorithm/generate.h b/libcxx/include/__algorithm/generate.h
--- a/libcxx/include/__algorithm/generate.h
+++ b/libcxx/include/__algorithm/generate.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _ForwardIterator, class _Generator>
diff --git a/libcxx/include/__algorithm/generate_n.h b/libcxx/include/__algorithm/generate_n.h
--- a/libcxx/include/__algorithm/generate_n.h
+++ b/libcxx/include/__algorithm/generate_n.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__utility/convert_to_integral.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _OutputIterator, class _Size, class _Generator>
diff --git a/libcxx/include/__algorithm/half_positive.h b/libcxx/include/__algorithm/half_positive.h
--- a/libcxx/include/__algorithm/half_positive.h
+++ b/libcxx/include/__algorithm/half_positive.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_integral.h>
 #include <__type_traits/make_unsigned.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Perform division by two quickly for positive integers (llvm.org/PR39129)
diff --git a/libcxx/include/__algorithm/in_found_result.h b/libcxx/include/__algorithm/in_found_result.h
--- a/libcxx/include/__algorithm/in_found_result.h
+++ b/libcxx/include/__algorithm/in_found_result.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/in_fun_result.h b/libcxx/include/__algorithm/in_fun_result.h
--- a/libcxx/include/__algorithm/in_fun_result.h
+++ b/libcxx/include/__algorithm/in_fun_result.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__algorithm/in_in_out_result.h b/libcxx/include/__algorithm/in_in_out_result.h
--- a/libcxx/include/__algorithm/in_in_out_result.h
+++ b/libcxx/include/__algorithm/in_in_out_result.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__algorithm/in_in_result.h b/libcxx/include/__algorithm/in_in_result.h
--- a/libcxx/include/__algorithm/in_in_result.h
+++ b/libcxx/include/__algorithm/in_in_result.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__algorithm/in_out_out_result.h b/libcxx/include/__algorithm/in_out_out_result.h
--- a/libcxx/include/__algorithm/in_out_out_result.h
+++ b/libcxx/include/__algorithm/in_out_out_result.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__algorithm/in_out_result.h b/libcxx/include/__algorithm/in_out_result.h
--- a/libcxx/include/__algorithm/in_out_result.h
+++ b/libcxx/include/__algorithm/in_out_result.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__algorithm/includes.h b/libcxx/include/__algorithm/includes.h
--- a/libcxx/include/__algorithm/includes.h
+++ b/libcxx/include/__algorithm/includes.h
@@ -18,10 +18,6 @@
 #include <__type_traits/is_callable.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Iter1, class _Sent1, class _Iter2, class _Sent2, class _Comp, class _Proj1, class _Proj2>
diff --git a/libcxx/include/__algorithm/inplace_merge.h b/libcxx/include/__algorithm/inplace_merge.h
--- a/libcxx/include/__algorithm/inplace_merge.h
+++ b/libcxx/include/__algorithm/inplace_merge.h
@@ -29,10 +29,6 @@
 #include <__utility/pair.h>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__algorithm/is_heap.h b/libcxx/include/__algorithm/is_heap.h
--- a/libcxx/include/__algorithm/is_heap.h
+++ b/libcxx/include/__algorithm/is_heap.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _RandomAccessIterator, class _Compare>
diff --git a/libcxx/include/__algorithm/is_heap_until.h b/libcxx/include/__algorithm/is_heap_until.h
--- a/libcxx/include/__algorithm/is_heap_until.h
+++ b/libcxx/include/__algorithm/is_heap_until.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Compare, class _RandomAccessIterator>
diff --git a/libcxx/include/__algorithm/is_partitioned.h b/libcxx/include/__algorithm/is_partitioned.h
--- a/libcxx/include/__algorithm/is_partitioned.h
+++ b/libcxx/include/__algorithm/is_partitioned.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _Predicate>
diff --git a/libcxx/include/__algorithm/is_permutation.h b/libcxx/include/__algorithm/is_permutation.h
--- a/libcxx/include/__algorithm/is_permutation.h
+++ b/libcxx/include/__algorithm/is_permutation.h
@@ -22,10 +22,6 @@
 #include <__type_traits/is_callable.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Iter1, class _Sent1, class _Iter2, class _Sent2, class = void>
diff --git a/libcxx/include/__algorithm/is_sorted.h b/libcxx/include/__algorithm/is_sorted.h
--- a/libcxx/include/__algorithm/is_sorted.h
+++ b/libcxx/include/__algorithm/is_sorted.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _ForwardIterator, class _Compare>
diff --git a/libcxx/include/__algorithm/is_sorted_until.h b/libcxx/include/__algorithm/is_sorted_until.h
--- a/libcxx/include/__algorithm/is_sorted_until.h
+++ b/libcxx/include/__algorithm/is_sorted_until.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Compare, class _ForwardIterator>
diff --git a/libcxx/include/__algorithm/iter_swap.h b/libcxx/include/__algorithm/iter_swap.h
--- a/libcxx/include/__algorithm/iter_swap.h
+++ b/libcxx/include/__algorithm/iter_swap.h
@@ -13,10 +13,6 @@
 #include <__utility/declval.h>
 #include <__utility/swap.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _ForwardIterator1, class _ForwardIterator2>
diff --git a/libcxx/include/__algorithm/iterator_operations.h b/libcxx/include/__algorithm/iterator_operations.h
--- a/libcxx/include/__algorithm/iterator_operations.h
+++ b/libcxx/include/__algorithm/iterator_operations.h
@@ -29,10 +29,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy> struct _IterOps;
diff --git a/libcxx/include/__algorithm/lexicographical_compare.h b/libcxx/include/__algorithm/lexicographical_compare.h
--- a/libcxx/include/__algorithm/lexicographical_compare.h
+++ b/libcxx/include/__algorithm/lexicographical_compare.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Compare, class _InputIterator1, class _InputIterator2>
diff --git a/libcxx/include/__algorithm/lexicographical_compare_three_way.h b/libcxx/include/__algorithm/lexicographical_compare_three_way.h
--- a/libcxx/include/__algorithm/lexicographical_compare_three_way.h
+++ b/libcxx/include/__algorithm/lexicographical_compare_three_way.h
@@ -20,10 +20,6 @@
 #include <__type_traits/is_copy_constructible.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__algorithm/lower_bound.h b/libcxx/include/__algorithm/lower_bound.h
--- a/libcxx/include/__algorithm/lower_bound.h
+++ b/libcxx/include/__algorithm/lower_bound.h
@@ -21,10 +21,6 @@
 #include <__type_traits/is_callable.h>
 #include <__type_traits/remove_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Iter, class _Sent, class _Type, class _Proj, class _Comp>
diff --git a/libcxx/include/__algorithm/make_heap.h b/libcxx/include/__algorithm/make_heap.h
--- a/libcxx/include/__algorithm/make_heap.h
+++ b/libcxx/include/__algorithm/make_heap.h
@@ -17,10 +17,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare, class _RandomAccessIterator>
diff --git a/libcxx/include/__algorithm/make_projected.h b/libcxx/include/__algorithm/make_projected.h
--- a/libcxx/include/__algorithm/make_projected.h
+++ b/libcxx/include/__algorithm/make_projected.h
@@ -21,10 +21,6 @@
 #include <__utility/declval.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Pred, class _Proj>
diff --git a/libcxx/include/__algorithm/max.h b/libcxx/include/__algorithm/max.h
--- a/libcxx/include/__algorithm/max.h
+++ b/libcxx/include/__algorithm/max.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__algorithm/max_element.h b/libcxx/include/__algorithm/max_element.h
--- a/libcxx/include/__algorithm/max_element.h
+++ b/libcxx/include/__algorithm/max_element.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Compare, class _ForwardIterator>
diff --git a/libcxx/include/__algorithm/merge.h b/libcxx/include/__algorithm/merge.h
--- a/libcxx/include/__algorithm/merge.h
+++ b/libcxx/include/__algorithm/merge.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
diff --git a/libcxx/include/__algorithm/min.h b/libcxx/include/__algorithm/min.h
--- a/libcxx/include/__algorithm/min.h
+++ b/libcxx/include/__algorithm/min.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__algorithm/min_element.h b/libcxx/include/__algorithm/min_element.h
--- a/libcxx/include/__algorithm/min_element.h
+++ b/libcxx/include/__algorithm/min_element.h
@@ -18,10 +18,6 @@
 #include <__type_traits/is_callable.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Comp, class _Iter, class _Sent, class _Proj>
diff --git a/libcxx/include/__algorithm/min_max_result.h b/libcxx/include/__algorithm/min_max_result.h
--- a/libcxx/include/__algorithm/min_max_result.h
+++ b/libcxx/include/__algorithm/min_max_result.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__algorithm/minmax.h b/libcxx/include/__algorithm/minmax.h
--- a/libcxx/include/__algorithm/minmax.h
+++ b/libcxx/include/__algorithm/minmax.h
@@ -17,10 +17,6 @@
 #include <__utility/pair.h>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template<class _Tp, class _Compare>
diff --git a/libcxx/include/__algorithm/minmax_element.h b/libcxx/include/__algorithm/minmax_element.h
--- a/libcxx/include/__algorithm/minmax_element.h
+++ b/libcxx/include/__algorithm/minmax_element.h
@@ -17,10 +17,6 @@
 #include <__type_traits/is_callable.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Comp, class _Proj>
diff --git a/libcxx/include/__algorithm/mismatch.h b/libcxx/include/__algorithm/mismatch.h
--- a/libcxx/include/__algorithm/mismatch.h
+++ b/libcxx/include/__algorithm/mismatch.h
@@ -15,10 +15,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
diff --git a/libcxx/include/__algorithm/move.h b/libcxx/include/__algorithm/move.h
--- a/libcxx/include/__algorithm/move.h
+++ b/libcxx/include/__algorithm/move.h
@@ -20,10 +20,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__algorithm/move_backward.h b/libcxx/include/__algorithm/move_backward.h
--- a/libcxx/include/__algorithm/move_backward.h
+++ b/libcxx/include/__algorithm/move_backward.h
@@ -19,10 +19,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__algorithm/next_permutation.h b/libcxx/include/__algorithm/next_permutation.h
--- a/libcxx/include/__algorithm/next_permutation.h
+++ b/libcxx/include/__algorithm/next_permutation.h
@@ -18,10 +18,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare, class _BidirectionalIterator, class _Sentinel>
diff --git a/libcxx/include/__algorithm/none_of.h b/libcxx/include/__algorithm/none_of.h
--- a/libcxx/include/__algorithm/none_of.h
+++ b/libcxx/include/__algorithm/none_of.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _Predicate>
diff --git a/libcxx/include/__algorithm/nth_element.h b/libcxx/include/__algorithm/nth_element.h
--- a/libcxx/include/__algorithm/nth_element.h
+++ b/libcxx/include/__algorithm/nth_element.h
@@ -19,10 +19,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template<class _Compare, class _RandomAccessIterator>
diff --git a/libcxx/include/__algorithm/partial_sort.h b/libcxx/include/__algorithm/partial_sort.h
--- a/libcxx/include/__algorithm/partial_sort.h
+++ b/libcxx/include/__algorithm/partial_sort.h
@@ -23,10 +23,6 @@
 #include <__type_traits/is_copy_constructible.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare, class _RandomAccessIterator, class _Sentinel>
diff --git a/libcxx/include/__algorithm/partial_sort_copy.h b/libcxx/include/__algorithm/partial_sort_copy.h
--- a/libcxx/include/__algorithm/partial_sort_copy.h
+++ b/libcxx/include/__algorithm/partial_sort_copy.h
@@ -24,10 +24,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare,
diff --git a/libcxx/include/__algorithm/partition.h b/libcxx/include/__algorithm/partition.h
--- a/libcxx/include/__algorithm/partition.h
+++ b/libcxx/include/__algorithm/partition.h
@@ -15,10 +15,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Predicate, class _AlgPolicy, class _ForwardIterator, class _Sentinel>
diff --git a/libcxx/include/__algorithm/partition_copy.h b/libcxx/include/__algorithm/partition_copy.h
--- a/libcxx/include/__algorithm/partition_copy.h
+++ b/libcxx/include/__algorithm/partition_copy.h
@@ -13,10 +13,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _OutputIterator1,
diff --git a/libcxx/include/__algorithm/partition_point.h b/libcxx/include/__algorithm/partition_point.h
--- a/libcxx/include/__algorithm/partition_point.h
+++ b/libcxx/include/__algorithm/partition_point.h
@@ -15,10 +15,6 @@
 #include <__iterator/distance.h>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template<class _ForwardIterator, class _Predicate>
diff --git a/libcxx/include/__algorithm/pop_heap.h b/libcxx/include/__algorithm/pop_heap.h
--- a/libcxx/include/__algorithm/pop_heap.h
+++ b/libcxx/include/__algorithm/pop_heap.h
@@ -21,10 +21,6 @@
 #include <__type_traits/is_copy_constructible.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare, class _RandomAccessIterator>
diff --git a/libcxx/include/__algorithm/prev_permutation.h b/libcxx/include/__algorithm/prev_permutation.h
--- a/libcxx/include/__algorithm/prev_permutation.h
+++ b/libcxx/include/__algorithm/prev_permutation.h
@@ -18,10 +18,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare, class _BidirectionalIterator, class _Sentinel>
diff --git a/libcxx/include/__algorithm/pstl_any_all_none_of.h b/libcxx/include/__algorithm/pstl_any_all_none_of.h
--- a/libcxx/include/__algorithm/pstl_any_all_none_of.h
+++ b/libcxx/include/__algorithm/pstl_any_all_none_of.h
@@ -19,10 +19,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_backend.h b/libcxx/include/__algorithm/pstl_backend.h
--- a/libcxx/include/__algorithm/pstl_backend.h
+++ b/libcxx/include/__algorithm/pstl_backend.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <execution>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/backend.h b/libcxx/include/__algorithm/pstl_backends/cpu_backends/backend.h
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/backend.h
+++ b/libcxx/include/__algorithm/pstl_backends/cpu_backends/backend.h
@@ -20,10 +20,6 @@
 #  error "Invalid CPU backend choice"
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/fill.h b/libcxx/include/__algorithm/pstl_backends/cpu_backends/fill.h
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/fill.h
+++ b/libcxx/include/__algorithm/pstl_backends/cpu_backends/fill.h
@@ -16,10 +16,6 @@
 #include <__type_traits/is_execution_policy.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/find_if.h b/libcxx/include/__algorithm/pstl_backends/cpu_backends/find_if.h
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/find_if.h
+++ b/libcxx/include/__algorithm/pstl_backends/cpu_backends/find_if.h
@@ -20,10 +20,6 @@
 #include <__utility/terminate_on_exception.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/for_each.h b/libcxx/include/__algorithm/pstl_backends/cpu_backends/for_each.h
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/for_each.h
+++ b/libcxx/include/__algorithm/pstl_backends/cpu_backends/for_each.h
@@ -16,10 +16,6 @@
 #include <__type_traits/is_execution_policy.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/merge.h b/libcxx/include/__algorithm/pstl_backends/cpu_backends/merge.h
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/merge.h
+++ b/libcxx/include/__algorithm/pstl_backends/cpu_backends/merge.h
@@ -17,10 +17,6 @@
 #include <__utility/move.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/serial.h b/libcxx/include/__algorithm/pstl_backends/cpu_backends/serial.h
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/serial.h
+++ b/libcxx/include/__algorithm/pstl_backends/cpu_backends/serial.h
@@ -14,10 +14,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/stable_sort.h b/libcxx/include/__algorithm/pstl_backends/cpu_backends/stable_sort.h
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/stable_sort.h
+++ b/libcxx/include/__algorithm/pstl_backends/cpu_backends/stable_sort.h
@@ -15,10 +15,6 @@
 #include <__type_traits/is_execution_policy.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/thread.h b/libcxx/include/__algorithm/pstl_backends/cpu_backends/thread.h
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/thread.h
+++ b/libcxx/include/__algorithm/pstl_backends/cpu_backends/thread.h
@@ -14,10 +14,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 // This backend implementation is for testing purposes only and not meant for production use. This will be replaced
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform.h b/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform.h
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform.h
+++ b/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform.h
@@ -18,10 +18,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform_reduce.h b/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform_reduce.h
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform_reduce.h
+++ b/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform_reduce.h
@@ -20,10 +20,6 @@
 #include <__utility/terminate_on_exception.h>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_copy.h b/libcxx/include/__algorithm/pstl_copy.h
--- a/libcxx/include/__algorithm/pstl_copy.h
+++ b/libcxx/include/__algorithm/pstl_copy.h
@@ -18,10 +18,6 @@
 #include <__type_traits/is_execution_policy.h>
 #include <__type_traits/is_trivially_copyable.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_count.h b/libcxx/include/__algorithm/pstl_count.h
--- a/libcxx/include/__algorithm/pstl_count.h
+++ b/libcxx/include/__algorithm/pstl_count.h
@@ -22,10 +22,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_fill.h b/libcxx/include/__algorithm/pstl_fill.h
--- a/libcxx/include/__algorithm/pstl_fill.h
+++ b/libcxx/include/__algorithm/pstl_fill.h
@@ -19,10 +19,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_find.h b/libcxx/include/__algorithm/pstl_find.h
--- a/libcxx/include/__algorithm/pstl_find.h
+++ b/libcxx/include/__algorithm/pstl_find.h
@@ -20,10 +20,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_for_each.h b/libcxx/include/__algorithm/pstl_for_each.h
--- a/libcxx/include/__algorithm/pstl_for_each.h
+++ b/libcxx/include/__algorithm/pstl_for_each.h
@@ -21,10 +21,6 @@
 #include <__type_traits/void_t.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_frontend_dispatch.h b/libcxx/include/__algorithm/pstl_frontend_dispatch.h
--- a/libcxx/include/__algorithm/pstl_frontend_dispatch.h
+++ b/libcxx/include/__algorithm/pstl_frontend_dispatch.h
@@ -13,10 +13,6 @@
 #include <__type_traits/is_callable.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_generate.h b/libcxx/include/__algorithm/pstl_generate.h
--- a/libcxx/include/__algorithm/pstl_generate.h
+++ b/libcxx/include/__algorithm/pstl_generate.h
@@ -17,10 +17,6 @@
 #include <__type_traits/is_execution_policy.h>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_is_partitioned.h b/libcxx/include/__algorithm/pstl_is_partitioned.h
--- a/libcxx/include/__algorithm/pstl_is_partitioned.h
+++ b/libcxx/include/__algorithm/pstl_is_partitioned.h
@@ -17,10 +17,6 @@
 #include <__type_traits/is_execution_policy.h>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_merge.h b/libcxx/include/__algorithm/pstl_merge.h
--- a/libcxx/include/__algorithm/pstl_merge.h
+++ b/libcxx/include/__algorithm/pstl_merge.h
@@ -15,10 +15,6 @@
 #include <__type_traits/is_execution_policy.h>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_replace.h b/libcxx/include/__algorithm/pstl_replace.h
--- a/libcxx/include/__algorithm/pstl_replace.h
+++ b/libcxx/include/__algorithm/pstl_replace.h
@@ -14,10 +14,6 @@
 #include <__algorithm/pstl_frontend_dispatch.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_stable_sort.h b/libcxx/include/__algorithm/pstl_stable_sort.h
--- a/libcxx/include/__algorithm/pstl_stable_sort.h
+++ b/libcxx/include/__algorithm/pstl_stable_sort.h
@@ -15,10 +15,6 @@
 #include <__type_traits/is_execution_policy.h>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/pstl_transform.h b/libcxx/include/__algorithm/pstl_transform.h
--- a/libcxx/include/__algorithm/pstl_transform.h
+++ b/libcxx/include/__algorithm/pstl_transform.h
@@ -16,10 +16,6 @@
 #include <__type_traits/is_execution_policy.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/push_heap.h b/libcxx/include/__algorithm/push_heap.h
--- a/libcxx/include/__algorithm/push_heap.h
+++ b/libcxx/include/__algorithm/push_heap.h
@@ -18,10 +18,6 @@
 #include <__type_traits/is_copy_constructible.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare, class _RandomAccessIterator>
diff --git a/libcxx/include/__algorithm/ranges_adjacent_find.h b/libcxx/include/__algorithm/ranges_adjacent_find.h
--- a/libcxx/include/__algorithm/ranges_adjacent_find.h
+++ b/libcxx/include/__algorithm/ranges_adjacent_find.h
@@ -20,10 +20,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_all_of.h b/libcxx/include/__algorithm/ranges_all_of.h
--- a/libcxx/include/__algorithm/ranges_all_of.h
+++ b/libcxx/include/__algorithm/ranges_all_of.h
@@ -18,10 +18,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_any_of.h b/libcxx/include/__algorithm/ranges_any_of.h
--- a/libcxx/include/__algorithm/ranges_any_of.h
+++ b/libcxx/include/__algorithm/ranges_any_of.h
@@ -18,10 +18,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_binary_search.h b/libcxx/include/__algorithm/ranges_binary_search.h
--- a/libcxx/include/__algorithm/ranges_binary_search.h
+++ b/libcxx/include/__algorithm/ranges_binary_search.h
@@ -20,10 +20,6 @@
 #include <__ranges/access.h>
 #include <__ranges/concepts.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_clamp.h b/libcxx/include/__algorithm/ranges_clamp.h
--- a/libcxx/include/__algorithm/ranges_clamp.h
+++ b/libcxx/include/__algorithm/ranges_clamp.h
@@ -18,10 +18,6 @@
 #include <__iterator/projected.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_copy.h b/libcxx/include/__algorithm/ranges_copy.h
--- a/libcxx/include/__algorithm/ranges_copy.h
+++ b/libcxx/include/__algorithm/ranges_copy.h
@@ -21,10 +21,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_copy_backward.h b/libcxx/include/__algorithm/ranges_copy_backward.h
--- a/libcxx/include/__algorithm/ranges_copy_backward.h
+++ b/libcxx/include/__algorithm/ranges_copy_backward.h
@@ -19,10 +19,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_copy_if.h b/libcxx/include/__algorithm/ranges_copy_if.h
--- a/libcxx/include/__algorithm/ranges_copy_if.h
+++ b/libcxx/include/__algorithm/ranges_copy_if.h
@@ -20,10 +20,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_copy_n.h b/libcxx/include/__algorithm/ranges_copy_n.h
--- a/libcxx/include/__algorithm/ranges_copy_n.h
+++ b/libcxx/include/__algorithm/ranges_copy_n.h
@@ -21,10 +21,6 @@
 #include <__iterator/wrap_iter.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__algorithm/ranges_count.h b/libcxx/include/__algorithm/ranges_count.h
--- a/libcxx/include/__algorithm/ranges_count.h
+++ b/libcxx/include/__algorithm/ranges_count.h
@@ -21,10 +21,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_count_if.h b/libcxx/include/__algorithm/ranges_count_if.h
--- a/libcxx/include/__algorithm/ranges_count_if.h
+++ b/libcxx/include/__algorithm/ranges_count_if.h
@@ -21,10 +21,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_equal.h b/libcxx/include/__algorithm/ranges_equal.h
--- a/libcxx/include/__algorithm/ranges_equal.h
+++ b/libcxx/include/__algorithm/ranges_equal.h
@@ -22,10 +22,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_equal_range.h b/libcxx/include/__algorithm/ranges_equal_range.h
--- a/libcxx/include/__algorithm/ranges_equal_range.h
+++ b/libcxx/include/__algorithm/ranges_equal_range.h
@@ -26,10 +26,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_fill.h b/libcxx/include/__algorithm/ranges_fill.h
--- a/libcxx/include/__algorithm/ranges_fill.h
+++ b/libcxx/include/__algorithm/ranges_fill.h
@@ -16,10 +16,6 @@
 #include <__ranges/concepts.h>
 #include <__ranges/dangling.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_fill_n.h b/libcxx/include/__algorithm/ranges_fill_n.h
--- a/libcxx/include/__algorithm/ranges_fill_n.h
+++ b/libcxx/include/__algorithm/ranges_fill_n.h
@@ -13,10 +13,6 @@
 #include <__iterator/concepts.h>
 #include <__iterator/incrementable_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_find.h b/libcxx/include/__algorithm/ranges_find.h
--- a/libcxx/include/__algorithm/ranges_find.h
+++ b/libcxx/include/__algorithm/ranges_find.h
@@ -24,10 +24,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_find_end.h b/libcxx/include/__algorithm/ranges_find_end.h
--- a/libcxx/include/__algorithm/ranges_find_end.h
+++ b/libcxx/include/__algorithm/ranges_find_end.h
@@ -23,10 +23,6 @@
 #include <__ranges/subrange.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_find_first_of.h b/libcxx/include/__algorithm/ranges_find_first_of.h
--- a/libcxx/include/__algorithm/ranges_find_first_of.h
+++ b/libcxx/include/__algorithm/ranges_find_first_of.h
@@ -20,10 +20,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_find_if.h b/libcxx/include/__algorithm/ranges_find_if.h
--- a/libcxx/include/__algorithm/ranges_find_if.h
+++ b/libcxx/include/__algorithm/ranges_find_if.h
@@ -20,10 +20,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_find_if_not.h b/libcxx/include/__algorithm/ranges_find_if_not.h
--- a/libcxx/include/__algorithm/ranges_find_if_not.h
+++ b/libcxx/include/__algorithm/ranges_find_if_not.h
@@ -22,10 +22,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_for_each.h b/libcxx/include/__algorithm/ranges_for_each.h
--- a/libcxx/include/__algorithm/ranges_for_each.h
+++ b/libcxx/include/__algorithm/ranges_for_each.h
@@ -20,10 +20,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_for_each_n.h b/libcxx/include/__algorithm/ranges_for_each_n.h
--- a/libcxx/include/__algorithm/ranges_for_each_n.h
+++ b/libcxx/include/__algorithm/ranges_for_each_n.h
@@ -20,10 +20,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_generate.h b/libcxx/include/__algorithm/ranges_generate.h
--- a/libcxx/include/__algorithm/ranges_generate.h
+++ b/libcxx/include/__algorithm/ranges_generate.h
@@ -20,10 +20,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_generate_n.h b/libcxx/include/__algorithm/ranges_generate_n.h
--- a/libcxx/include/__algorithm/ranges_generate_n.h
+++ b/libcxx/include/__algorithm/ranges_generate_n.h
@@ -21,10 +21,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_includes.h b/libcxx/include/__algorithm/ranges_includes.h
--- a/libcxx/include/__algorithm/ranges_includes.h
+++ b/libcxx/include/__algorithm/ranges_includes.h
@@ -23,10 +23,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_inplace_merge.h b/libcxx/include/__algorithm/ranges_inplace_merge.h
--- a/libcxx/include/__algorithm/ranges_inplace_merge.h
+++ b/libcxx/include/__algorithm/ranges_inplace_merge.h
@@ -27,10 +27,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_is_heap.h b/libcxx/include/__algorithm/ranges_is_heap.h
--- a/libcxx/include/__algorithm/ranges_is_heap.h
+++ b/libcxx/include/__algorithm/ranges_is_heap.h
@@ -22,10 +22,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_is_heap_until.h b/libcxx/include/__algorithm/ranges_is_heap_until.h
--- a/libcxx/include/__algorithm/ranges_is_heap_until.h
+++ b/libcxx/include/__algorithm/ranges_is_heap_until.h
@@ -23,10 +23,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_is_partitioned.h b/libcxx/include/__algorithm/ranges_is_partitioned.h
--- a/libcxx/include/__algorithm/ranges_is_partitioned.h
+++ b/libcxx/include/__algorithm/ranges_is_partitioned.h
@@ -19,10 +19,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_is_permutation.h b/libcxx/include/__algorithm/ranges_is_permutation.h
--- a/libcxx/include/__algorithm/ranges_is_permutation.h
+++ b/libcxx/include/__algorithm/ranges_is_permutation.h
@@ -21,10 +21,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_is_sorted.h b/libcxx/include/__algorithm/ranges_is_sorted.h
--- a/libcxx/include/__algorithm/ranges_is_sorted.h
+++ b/libcxx/include/__algorithm/ranges_is_sorted.h
@@ -19,10 +19,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_is_sorted_until.h b/libcxx/include/__algorithm/ranges_is_sorted_until.h
--- a/libcxx/include/__algorithm/ranges_is_sorted_until.h
+++ b/libcxx/include/__algorithm/ranges_is_sorted_until.h
@@ -20,10 +20,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_iterator_concept.h b/libcxx/include/__algorithm/ranges_iterator_concept.h
--- a/libcxx/include/__algorithm/ranges_iterator_concept.h
+++ b/libcxx/include/__algorithm/ranges_iterator_concept.h
@@ -14,10 +14,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_lexicographical_compare.h b/libcxx/include/__algorithm/ranges_lexicographical_compare.h
--- a/libcxx/include/__algorithm/ranges_lexicographical_compare.h
+++ b/libcxx/include/__algorithm/ranges_lexicographical_compare.h
@@ -19,10 +19,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_lower_bound.h b/libcxx/include/__algorithm/ranges_lower_bound.h
--- a/libcxx/include/__algorithm/ranges_lower_bound.h
+++ b/libcxx/include/__algorithm/ranges_lower_bound.h
@@ -23,10 +23,6 @@
 #include <__ranges/concepts.h>
 #include <__ranges/dangling.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_make_heap.h b/libcxx/include/__algorithm/ranges_make_heap.h
--- a/libcxx/include/__algorithm/ranges_make_heap.h
+++ b/libcxx/include/__algorithm/ranges_make_heap.h
@@ -28,10 +28,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_max.h b/libcxx/include/__algorithm/ranges_max.h
--- a/libcxx/include/__algorithm/ranges_max.h
+++ b/libcxx/include/__algorithm/ranges_max.h
@@ -24,10 +24,6 @@
 #include <__utility/move.h>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_PUSH_MACROS
diff --git a/libcxx/include/__algorithm/ranges_max_element.h b/libcxx/include/__algorithm/ranges_max_element.h
--- a/libcxx/include/__algorithm/ranges_max_element.h
+++ b/libcxx/include/__algorithm/ranges_max_element.h
@@ -20,10 +20,6 @@
 #include <__ranges/concepts.h>
 #include <__ranges/dangling.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_merge.h b/libcxx/include/__algorithm/ranges_merge.h
--- a/libcxx/include/__algorithm/ranges_merge.h
+++ b/libcxx/include/__algorithm/ranges_merge.h
@@ -23,10 +23,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_min.h b/libcxx/include/__algorithm/ranges_min.h
--- a/libcxx/include/__algorithm/ranges_min.h
+++ b/libcxx/include/__algorithm/ranges_min.h
@@ -23,10 +23,6 @@
 #include <__type_traits/is_trivially_copyable.h>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_PUSH_MACROS
diff --git a/libcxx/include/__algorithm/ranges_min_element.h b/libcxx/include/__algorithm/ranges_min_element.h
--- a/libcxx/include/__algorithm/ranges_min_element.h
+++ b/libcxx/include/__algorithm/ranges_min_element.h
@@ -20,10 +20,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_minmax.h b/libcxx/include/__algorithm/ranges_minmax.h
--- a/libcxx/include/__algorithm/ranges_minmax.h
+++ b/libcxx/include/__algorithm/ranges_minmax.h
@@ -30,10 +30,6 @@
 #include <__utility/pair.h>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_PUSH_MACROS
diff --git a/libcxx/include/__algorithm/ranges_minmax_element.h b/libcxx/include/__algorithm/ranges_minmax_element.h
--- a/libcxx/include/__algorithm/ranges_minmax_element.h
+++ b/libcxx/include/__algorithm/ranges_minmax_element.h
@@ -24,10 +24,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_mismatch.h b/libcxx/include/__algorithm/ranges_mismatch.h
--- a/libcxx/include/__algorithm/ranges_mismatch.h
+++ b/libcxx/include/__algorithm/ranges_mismatch.h
@@ -21,10 +21,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__algorithm/ranges_move.h b/libcxx/include/__algorithm/ranges_move.h
--- a/libcxx/include/__algorithm/ranges_move.h
+++ b/libcxx/include/__algorithm/ranges_move.h
@@ -19,10 +19,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_move_backward.h b/libcxx/include/__algorithm/ranges_move_backward.h
--- a/libcxx/include/__algorithm/ranges_move_backward.h
+++ b/libcxx/include/__algorithm/ranges_move_backward.h
@@ -21,10 +21,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_next_permutation.h b/libcxx/include/__algorithm/ranges_next_permutation.h
--- a/libcxx/include/__algorithm/ranges_next_permutation.h
+++ b/libcxx/include/__algorithm/ranges_next_permutation.h
@@ -24,10 +24,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_none_of.h b/libcxx/include/__algorithm/ranges_none_of.h
--- a/libcxx/include/__algorithm/ranges_none_of.h
+++ b/libcxx/include/__algorithm/ranges_none_of.h
@@ -18,10 +18,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_nth_element.h b/libcxx/include/__algorithm/ranges_nth_element.h
--- a/libcxx/include/__algorithm/ranges_nth_element.h
+++ b/libcxx/include/__algorithm/ranges_nth_element.h
@@ -27,10 +27,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_partial_sort.h b/libcxx/include/__algorithm/ranges_partial_sort.h
--- a/libcxx/include/__algorithm/ranges_partial_sort.h
+++ b/libcxx/include/__algorithm/ranges_partial_sort.h
@@ -29,10 +29,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_partial_sort_copy.h b/libcxx/include/__algorithm/ranges_partial_sort_copy.h
--- a/libcxx/include/__algorithm/ranges_partial_sort_copy.h
+++ b/libcxx/include/__algorithm/ranges_partial_sort_copy.h
@@ -26,10 +26,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_partition.h b/libcxx/include/__algorithm/ranges_partition.h
--- a/libcxx/include/__algorithm/ranges_partition.h
+++ b/libcxx/include/__algorithm/ranges_partition.h
@@ -28,10 +28,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_partition_copy.h b/libcxx/include/__algorithm/ranges_partition_copy.h
--- a/libcxx/include/__algorithm/ranges_partition_copy.h
+++ b/libcxx/include/__algorithm/ranges_partition_copy.h
@@ -22,10 +22,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_partition_point.h b/libcxx/include/__algorithm/ranges_partition_point.h
--- a/libcxx/include/__algorithm/ranges_partition_point.h
+++ b/libcxx/include/__algorithm/ranges_partition_point.h
@@ -23,10 +23,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_pop_heap.h b/libcxx/include/__algorithm/ranges_pop_heap.h
--- a/libcxx/include/__algorithm/ranges_pop_heap.h
+++ b/libcxx/include/__algorithm/ranges_pop_heap.h
@@ -28,10 +28,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_prev_permutation.h b/libcxx/include/__algorithm/ranges_prev_permutation.h
--- a/libcxx/include/__algorithm/ranges_prev_permutation.h
+++ b/libcxx/include/__algorithm/ranges_prev_permutation.h
@@ -24,10 +24,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_push_heap.h b/libcxx/include/__algorithm/ranges_push_heap.h
--- a/libcxx/include/__algorithm/ranges_push_heap.h
+++ b/libcxx/include/__algorithm/ranges_push_heap.h
@@ -28,10 +28,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_remove.h b/libcxx/include/__algorithm/ranges_remove.h
--- a/libcxx/include/__algorithm/ranges_remove.h
+++ b/libcxx/include/__algorithm/ranges_remove.h
@@ -21,10 +21,6 @@
 #include <__ranges/subrange.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_remove_copy.h b/libcxx/include/__algorithm/ranges_remove_copy.h
--- a/libcxx/include/__algorithm/ranges_remove_copy.h
+++ b/libcxx/include/__algorithm/ranges_remove_copy.h
@@ -22,10 +22,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_remove_copy_if.h b/libcxx/include/__algorithm/ranges_remove_copy_if.h
--- a/libcxx/include/__algorithm/ranges_remove_copy_if.h
+++ b/libcxx/include/__algorithm/ranges_remove_copy_if.h
@@ -25,10 +25,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_remove_if.h b/libcxx/include/__algorithm/ranges_remove_if.h
--- a/libcxx/include/__algorithm/ranges_remove_if.h
+++ b/libcxx/include/__algorithm/ranges_remove_if.h
@@ -23,10 +23,6 @@
 #include <__ranges/subrange.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_replace.h b/libcxx/include/__algorithm/ranges_replace.h
--- a/libcxx/include/__algorithm/ranges_replace.h
+++ b/libcxx/include/__algorithm/ranges_replace.h
@@ -20,10 +20,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_replace_copy.h b/libcxx/include/__algorithm/ranges_replace_copy.h
--- a/libcxx/include/__algorithm/ranges_replace_copy.h
+++ b/libcxx/include/__algorithm/ranges_replace_copy.h
@@ -22,10 +22,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_replace_copy_if.h b/libcxx/include/__algorithm/ranges_replace_copy_if.h
--- a/libcxx/include/__algorithm/ranges_replace_copy_if.h
+++ b/libcxx/include/__algorithm/ranges_replace_copy_if.h
@@ -20,10 +20,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_replace_if.h b/libcxx/include/__algorithm/ranges_replace_if.h
--- a/libcxx/include/__algorithm/ranges_replace_if.h
+++ b/libcxx/include/__algorithm/ranges_replace_if.h
@@ -19,10 +19,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_reverse.h b/libcxx/include/__algorithm/ranges_reverse.h
--- a/libcxx/include/__algorithm/ranges_reverse.h
+++ b/libcxx/include/__algorithm/ranges_reverse.h
@@ -18,10 +18,6 @@
 #include <__ranges/concepts.h>
 #include <__ranges/dangling.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_reverse_copy.h b/libcxx/include/__algorithm/ranges_reverse_copy.h
--- a/libcxx/include/__algorithm/ranges_reverse_copy.h
+++ b/libcxx/include/__algorithm/ranges_reverse_copy.h
@@ -21,10 +21,6 @@
 #include <__ranges/subrange.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_rotate.h b/libcxx/include/__algorithm/ranges_rotate.h
--- a/libcxx/include/__algorithm/ranges_rotate.h
+++ b/libcxx/include/__algorithm/ranges_rotate.h
@@ -21,10 +21,6 @@
 #include <__ranges/subrange.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_rotate_copy.h b/libcxx/include/__algorithm/ranges_rotate_copy.h
--- a/libcxx/include/__algorithm/ranges_rotate_copy.h
+++ b/libcxx/include/__algorithm/ranges_rotate_copy.h
@@ -19,10 +19,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_sample.h b/libcxx/include/__algorithm/ranges_sample.h
--- a/libcxx/include/__algorithm/ranges_sample.h
+++ b/libcxx/include/__algorithm/ranges_sample.h
@@ -23,10 +23,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_search.h b/libcxx/include/__algorithm/ranges_search.h
--- a/libcxx/include/__algorithm/ranges_search.h
+++ b/libcxx/include/__algorithm/ranges_search.h
@@ -24,10 +24,6 @@
 #include <__ranges/subrange.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_search_n.h b/libcxx/include/__algorithm/ranges_search_n.h
--- a/libcxx/include/__algorithm/ranges_search_n.h
+++ b/libcxx/include/__algorithm/ranges_search_n.h
@@ -27,10 +27,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_set_difference.h b/libcxx/include/__algorithm/ranges_set_difference.h
--- a/libcxx/include/__algorithm/ranges_set_difference.h
+++ b/libcxx/include/__algorithm/ranges_set_difference.h
@@ -26,10 +26,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_set_intersection.h b/libcxx/include/__algorithm/ranges_set_intersection.h
--- a/libcxx/include/__algorithm/ranges_set_intersection.h
+++ b/libcxx/include/__algorithm/ranges_set_intersection.h
@@ -24,10 +24,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_set_symmetric_difference.h b/libcxx/include/__algorithm/ranges_set_symmetric_difference.h
--- a/libcxx/include/__algorithm/ranges_set_symmetric_difference.h
+++ b/libcxx/include/__algorithm/ranges_set_symmetric_difference.h
@@ -24,10 +24,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_set_union.h b/libcxx/include/__algorithm/ranges_set_union.h
--- a/libcxx/include/__algorithm/ranges_set_union.h
+++ b/libcxx/include/__algorithm/ranges_set_union.h
@@ -27,10 +27,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_shuffle.h b/libcxx/include/__algorithm/ranges_shuffle.h
--- a/libcxx/include/__algorithm/ranges_shuffle.h
+++ b/libcxx/include/__algorithm/ranges_shuffle.h
@@ -27,10 +27,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_sort.h b/libcxx/include/__algorithm/ranges_sort.h
--- a/libcxx/include/__algorithm/ranges_sort.h
+++ b/libcxx/include/__algorithm/ranges_sort.h
@@ -27,10 +27,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_sort_heap.h b/libcxx/include/__algorithm/ranges_sort_heap.h
--- a/libcxx/include/__algorithm/ranges_sort_heap.h
+++ b/libcxx/include/__algorithm/ranges_sort_heap.h
@@ -28,10 +28,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_stable_partition.h b/libcxx/include/__algorithm/ranges_stable_partition.h
--- a/libcxx/include/__algorithm/ranges_stable_partition.h
+++ b/libcxx/include/__algorithm/ranges_stable_partition.h
@@ -30,10 +30,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_stable_sort.h b/libcxx/include/__algorithm/ranges_stable_sort.h
--- a/libcxx/include/__algorithm/ranges_stable_sort.h
+++ b/libcxx/include/__algorithm/ranges_stable_sort.h
@@ -27,10 +27,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_starts_with.h b/libcxx/include/__algorithm/ranges_starts_with.h
--- a/libcxx/include/__algorithm/ranges_starts_with.h
+++ b/libcxx/include/__algorithm/ranges_starts_with.h
@@ -20,10 +20,6 @@
 #include <__ranges/concepts.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 23
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_swap_ranges.h b/libcxx/include/__algorithm/ranges_swap_ranges.h
--- a/libcxx/include/__algorithm/ranges_swap_ranges.h
+++ b/libcxx/include/__algorithm/ranges_swap_ranges.h
@@ -20,10 +20,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_transform.h b/libcxx/include/__algorithm/ranges_transform.h
--- a/libcxx/include/__algorithm/ranges_transform.h
+++ b/libcxx/include/__algorithm/ranges_transform.h
@@ -22,10 +22,6 @@
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_unique.h b/libcxx/include/__algorithm/ranges_unique.h
--- a/libcxx/include/__algorithm/ranges_unique.h
+++ b/libcxx/include/__algorithm/ranges_unique.h
@@ -28,10 +28,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_unique_copy.h b/libcxx/include/__algorithm/ranges_unique_copy.h
--- a/libcxx/include/__algorithm/ranges_unique_copy.h
+++ b/libcxx/include/__algorithm/ranges_unique_copy.h
@@ -29,10 +29,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/ranges_upper_bound.h b/libcxx/include/__algorithm/ranges_upper_bound.h
--- a/libcxx/include/__algorithm/ranges_upper_bound.h
+++ b/libcxx/include/__algorithm/ranges_upper_bound.h
@@ -21,10 +21,6 @@
 #include <__ranges/concepts.h>
 #include <__ranges/dangling.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__algorithm/remove.h b/libcxx/include/__algorithm/remove.h
--- a/libcxx/include/__algorithm/remove.h
+++ b/libcxx/include/__algorithm/remove.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _ForwardIterator, class _Tp>
diff --git a/libcxx/include/__algorithm/remove_copy.h b/libcxx/include/__algorithm/remove_copy.h
--- a/libcxx/include/__algorithm/remove_copy.h
+++ b/libcxx/include/__algorithm/remove_copy.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _OutputIterator, class _Tp>
diff --git a/libcxx/include/__algorithm/remove_copy_if.h b/libcxx/include/__algorithm/remove_copy_if.h
--- a/libcxx/include/__algorithm/remove_copy_if.h
+++ b/libcxx/include/__algorithm/remove_copy_if.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _OutputIterator, class _Predicate>
diff --git a/libcxx/include/__algorithm/remove_if.h b/libcxx/include/__algorithm/remove_if.h
--- a/libcxx/include/__algorithm/remove_if.h
+++ b/libcxx/include/__algorithm/remove_if.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _ForwardIterator, class _Predicate>
diff --git a/libcxx/include/__algorithm/replace.h b/libcxx/include/__algorithm/replace.h
--- a/libcxx/include/__algorithm/replace.h
+++ b/libcxx/include/__algorithm/replace.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _ForwardIterator, class _Tp>
diff --git a/libcxx/include/__algorithm/replace_copy.h b/libcxx/include/__algorithm/replace_copy.h
--- a/libcxx/include/__algorithm/replace_copy.h
+++ b/libcxx/include/__algorithm/replace_copy.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _OutputIterator, class _Tp>
diff --git a/libcxx/include/__algorithm/replace_copy_if.h b/libcxx/include/__algorithm/replace_copy_if.h
--- a/libcxx/include/__algorithm/replace_copy_if.h
+++ b/libcxx/include/__algorithm/replace_copy_if.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _OutputIterator, class _Predicate, class _Tp>
diff --git a/libcxx/include/__algorithm/replace_if.h b/libcxx/include/__algorithm/replace_if.h
--- a/libcxx/include/__algorithm/replace_if.h
+++ b/libcxx/include/__algorithm/replace_if.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _ForwardIterator, class _Predicate, class _Tp>
diff --git a/libcxx/include/__algorithm/reverse.h b/libcxx/include/__algorithm/reverse.h
--- a/libcxx/include/__algorithm/reverse.h
+++ b/libcxx/include/__algorithm/reverse.h
@@ -15,10 +15,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _BidirectionalIterator>
diff --git a/libcxx/include/__algorithm/reverse_copy.h b/libcxx/include/__algorithm/reverse_copy.h
--- a/libcxx/include/__algorithm/reverse_copy.h
+++ b/libcxx/include/__algorithm/reverse_copy.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _BidirectionalIterator, class _OutputIterator>
diff --git a/libcxx/include/__algorithm/rotate.h b/libcxx/include/__algorithm/rotate.h
--- a/libcxx/include/__algorithm/rotate.h
+++ b/libcxx/include/__algorithm/rotate.h
@@ -19,10 +19,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _ForwardIterator>
diff --git a/libcxx/include/__algorithm/rotate_copy.h b/libcxx/include/__algorithm/rotate_copy.h
--- a/libcxx/include/__algorithm/rotate_copy.h
+++ b/libcxx/include/__algorithm/rotate_copy.h
@@ -12,10 +12,6 @@
 #include <__algorithm/copy.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _ForwardIterator, class _OutputIterator>
diff --git a/libcxx/include/__algorithm/sample.h b/libcxx/include/__algorithm/sample.h
--- a/libcxx/include/__algorithm/sample.h
+++ b/libcxx/include/__algorithm/sample.h
@@ -19,10 +19,6 @@
 #include <__type_traits/common_type.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__algorithm/search.h b/libcxx/include/__algorithm/search.h
--- a/libcxx/include/__algorithm/search.h
+++ b/libcxx/include/__algorithm/search.h
@@ -22,10 +22,6 @@
 #include <__type_traits/is_callable.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy,
diff --git a/libcxx/include/__algorithm/search_n.h b/libcxx/include/__algorithm/search_n.h
--- a/libcxx/include/__algorithm/search_n.h
+++ b/libcxx/include/__algorithm/search_n.h
@@ -24,10 +24,6 @@
 #include <__utility/convert_to_integral.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Pred, class _Iter, class _Sent, class _SizeT, class _Type, class _Proj>
diff --git a/libcxx/include/__algorithm/set_difference.h b/libcxx/include/__algorithm/set_difference.h
--- a/libcxx/include/__algorithm/set_difference.h
+++ b/libcxx/include/__algorithm/set_difference.h
@@ -21,10 +21,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Comp, class _InIter1, class _Sent1, class _InIter2, class _Sent2, class _OutIter>
diff --git a/libcxx/include/__algorithm/set_intersection.h b/libcxx/include/__algorithm/set_intersection.h
--- a/libcxx/include/__algorithm/set_intersection.h
+++ b/libcxx/include/__algorithm/set_intersection.h
@@ -17,10 +17,6 @@
 #include <__iterator/next.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InIter1, class _InIter2, class _OutIter>
diff --git a/libcxx/include/__algorithm/set_symmetric_difference.h b/libcxx/include/__algorithm/set_symmetric_difference.h
--- a/libcxx/include/__algorithm/set_symmetric_difference.h
+++ b/libcxx/include/__algorithm/set_symmetric_difference.h
@@ -18,10 +18,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InIter1, class _InIter2, class _OutIter>
diff --git a/libcxx/include/__algorithm/set_union.h b/libcxx/include/__algorithm/set_union.h
--- a/libcxx/include/__algorithm/set_union.h
+++ b/libcxx/include/__algorithm/set_union.h
@@ -18,10 +18,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InIter1, class _InIter2, class _OutIter>
diff --git a/libcxx/include/__algorithm/shift_left.h b/libcxx/include/__algorithm/shift_left.h
--- a/libcxx/include/__algorithm/shift_left.h
+++ b/libcxx/include/__algorithm/shift_left.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__algorithm/shift_right.h b/libcxx/include/__algorithm/shift_right.h
--- a/libcxx/include/__algorithm/shift_right.h
+++ b/libcxx/include/__algorithm/shift_right.h
@@ -16,10 +16,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/swap.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__algorithm/shuffle.h b/libcxx/include/__algorithm/shuffle.h
--- a/libcxx/include/__algorithm/shuffle.h
+++ b/libcxx/include/__algorithm/shuffle.h
@@ -20,10 +20,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__algorithm/sift_down.h b/libcxx/include/__algorithm/sift_down.h
--- a/libcxx/include/__algorithm/sift_down.h
+++ b/libcxx/include/__algorithm/sift_down.h
@@ -15,10 +15,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare, class _RandomAccessIterator>
diff --git a/libcxx/include/__algorithm/sort.h b/libcxx/include/__algorithm/sort.h
--- a/libcxx/include/__algorithm/sort.h
+++ b/libcxx/include/__algorithm/sort.h
@@ -35,10 +35,6 @@
 #include <climits>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // stable, 2-3 compares, 0-2 swaps
diff --git a/libcxx/include/__algorithm/sort_heap.h b/libcxx/include/__algorithm/sort_heap.h
--- a/libcxx/include/__algorithm/sort_heap.h
+++ b/libcxx/include/__algorithm/sort_heap.h
@@ -20,10 +20,6 @@
 #include <__type_traits/is_copy_constructible.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare, class _RandomAccessIterator>
diff --git a/libcxx/include/__algorithm/stable_partition.h b/libcxx/include/__algorithm/stable_partition.h
--- a/libcxx/include/__algorithm/stable_partition.h
+++ b/libcxx/include/__algorithm/stable_partition.h
@@ -22,10 +22,6 @@
 #include <__utility/pair.h>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Predicate, class _ForwardIterator, class _Distance, class _Pair>
diff --git a/libcxx/include/__algorithm/stable_sort.h b/libcxx/include/__algorithm/stable_sort.h
--- a/libcxx/include/__algorithm/stable_sort.h
+++ b/libcxx/include/__algorithm/stable_sort.h
@@ -25,10 +25,6 @@
 #include <__utility/pair.h>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare, class _BidirectionalIterator>
diff --git a/libcxx/include/__algorithm/swap_ranges.h b/libcxx/include/__algorithm/swap_ranges.h
--- a/libcxx/include/__algorithm/swap_ranges.h
+++ b/libcxx/include/__algorithm/swap_ranges.h
@@ -14,10 +14,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // 2+2 iterators: the shorter size will be used.
diff --git a/libcxx/include/__algorithm/three_way_comp_ref_type.h b/libcxx/include/__algorithm/three_way_comp_ref_type.h
--- a/libcxx/include/__algorithm/three_way_comp_ref_type.h
+++ b/libcxx/include/__algorithm/three_way_comp_ref_type.h
@@ -15,10 +15,6 @@
 #include <__utility/declval.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__algorithm/transform.h b/libcxx/include/__algorithm/transform.h
--- a/libcxx/include/__algorithm/transform.h
+++ b/libcxx/include/__algorithm/transform.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _OutputIterator, class _UnaryOperation>
diff --git a/libcxx/include/__algorithm/uniform_random_bit_generator_adaptor.h b/libcxx/include/__algorithm/uniform_random_bit_generator_adaptor.h
--- a/libcxx/include/__algorithm/uniform_random_bit_generator_adaptor.h
+++ b/libcxx/include/__algorithm/uniform_random_bit_generator_adaptor.h
@@ -13,10 +13,6 @@
 #include <__functional/invoke.h>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_PUSH_MACROS
diff --git a/libcxx/include/__algorithm/unique.h b/libcxx/include/__algorithm/unique.h
--- a/libcxx/include/__algorithm/unique.h
+++ b/libcxx/include/__algorithm/unique.h
@@ -17,10 +17,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // unique
diff --git a/libcxx/include/__algorithm/unique_copy.h b/libcxx/include/__algorithm/unique_copy.h
--- a/libcxx/include/__algorithm/unique_copy.h
+++ b/libcxx/include/__algorithm/unique_copy.h
@@ -19,10 +19,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 namespace __unique_copy_tags {
diff --git a/libcxx/include/__algorithm/unwrap_iter.h b/libcxx/include/__algorithm/unwrap_iter.h
--- a/libcxx/include/__algorithm/unwrap_iter.h
+++ b/libcxx/include/__algorithm/unwrap_iter.h
@@ -17,10 +17,6 @@
 #include <__utility/declval.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // TODO: Change the name of __unwrap_iter_impl to something more appropriate
diff --git a/libcxx/include/__algorithm/unwrap_range.h b/libcxx/include/__algorithm/unwrap_range.h
--- a/libcxx/include/__algorithm/unwrap_range.h
+++ b/libcxx/include/__algorithm/unwrap_range.h
@@ -18,10 +18,6 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // __unwrap_range and __rewrap_range are used to unwrap ranges which may have different iterator and sentinel types.
diff --git a/libcxx/include/__algorithm/upper_bound.h b/libcxx/include/__algorithm/upper_bound.h
--- a/libcxx/include/__algorithm/upper_bound.h
+++ b/libcxx/include/__algorithm/upper_bound.h
@@ -21,10 +21,6 @@
 #include <__type_traits/is_copy_constructible.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Compare, class _Iter, class _Sent, class _Tp, class _Proj>
diff --git a/libcxx/include/__assert b/libcxx/include/__assert
--- a/libcxx/include/__assert
+++ b/libcxx/include/__assert
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__verbose_abort>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 // Automatically enable assertions when the debug mode is enabled.
 #if defined(_LIBCPP_ENABLE_DEBUG_MODE)
 #  ifndef _LIBCPP_ENABLE_ASSERTIONS
diff --git a/libcxx/include/__atomic/aliases.h b/libcxx/include/__atomic/aliases.h
--- a/libcxx/include/__atomic/aliases.h
+++ b/libcxx/include/__atomic/aliases.h
@@ -19,10 +19,6 @@
 #include <cstdint>
 #include <cstdlib>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using atomic_bool   = atomic<bool>;
diff --git a/libcxx/include/__atomic/atomic.h b/libcxx/include/__atomic/atomic.h
--- a/libcxx/include/__atomic/atomic.h
+++ b/libcxx/include/__atomic/atomic.h
@@ -20,10 +20,6 @@
 #include <__type_traits/remove_pointer.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__atomic/atomic_base.h b/libcxx/include/__atomic/atomic_base.h
--- a/libcxx/include/__atomic/atomic_base.h
+++ b/libcxx/include/__atomic/atomic_base.h
@@ -22,10 +22,6 @@
 #include <__type_traits/is_same.h>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, bool = is_integral<_Tp>::value && !is_same<_Tp, bool>::value>
diff --git a/libcxx/include/__atomic/atomic_flag.h b/libcxx/include/__atomic/atomic_flag.h
--- a/libcxx/include/__atomic/atomic_flag.h
+++ b/libcxx/include/__atomic/atomic_flag.h
@@ -18,10 +18,6 @@
 #include <__threading_support>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 struct atomic_flag
diff --git a/libcxx/include/__atomic/atomic_init.h b/libcxx/include/__atomic/atomic_init.h
--- a/libcxx/include/__atomic/atomic_init.h
+++ b/libcxx/include/__atomic/atomic_init.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #define ATOMIC_FLAG_INIT {false}
 #define ATOMIC_VAR_INIT(__v) {__v}
 
diff --git a/libcxx/include/__atomic/atomic_lock_free.h b/libcxx/include/__atomic/atomic_lock_free.h
--- a/libcxx/include/__atomic/atomic_lock_free.h
+++ b/libcxx/include/__atomic/atomic_lock_free.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if defined(__CLANG_ATOMIC_BOOL_LOCK_FREE)
 # define ATOMIC_BOOL_LOCK_FREE      __CLANG_ATOMIC_BOOL_LOCK_FREE
 # define ATOMIC_CHAR_LOCK_FREE      __CLANG_ATOMIC_CHAR_LOCK_FREE
diff --git a/libcxx/include/__atomic/atomic_sync.h b/libcxx/include/__atomic/atomic_sync.h
--- a/libcxx/include/__atomic/atomic_sync.h
+++ b/libcxx/include/__atomic/atomic_sync.h
@@ -21,10 +21,6 @@
 #include <__type_traits/decay.h>
 #include <cstring>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #ifndef _LIBCPP_HAS_NO_THREADS
diff --git a/libcxx/include/__atomic/check_memory_order.h b/libcxx/include/__atomic/check_memory_order.h
--- a/libcxx/include/__atomic/check_memory_order.h
+++ b/libcxx/include/__atomic/check_memory_order.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #define _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m) \
   _LIBCPP_DIAGNOSE_WARNING(__m == memory_order_consume || \
                            __m == memory_order_acquire || \
diff --git a/libcxx/include/__atomic/contention_t.h b/libcxx/include/__atomic/contention_t.h
--- a/libcxx/include/__atomic/contention_t.h
+++ b/libcxx/include/__atomic/contention_t.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if defined(__linux__) || (defined(_AIX) && !defined(__64BIT__))
diff --git a/libcxx/include/__atomic/cxx_atomic_impl.h b/libcxx/include/__atomic/cxx_atomic_impl.h
--- a/libcxx/include/__atomic/cxx_atomic_impl.h
+++ b/libcxx/include/__atomic/cxx_atomic_impl.h
@@ -20,10 +20,6 @@
 #include <cstddef>
 #include <cstring>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) || \
diff --git a/libcxx/include/__atomic/fence.h b/libcxx/include/__atomic/fence.h
--- a/libcxx/include/__atomic/fence.h
+++ b/libcxx/include/__atomic/fence.h
@@ -13,10 +13,6 @@
 #include <__atomic/memory_order.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 inline _LIBCPP_HIDE_FROM_ABI
diff --git a/libcxx/include/__atomic/is_always_lock_free.h b/libcxx/include/__atomic/is_always_lock_free.h
--- a/libcxx/include/__atomic/is_always_lock_free.h
+++ b/libcxx/include/__atomic/is_always_lock_free.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__atomic/kill_dependency.h b/libcxx/include/__atomic/kill_dependency.h
--- a/libcxx/include/__atomic/kill_dependency.h
+++ b/libcxx/include/__atomic/kill_dependency.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__atomic/memory_order.h b/libcxx/include/__atomic/memory_order.h
--- a/libcxx/include/__atomic/memory_order.h
+++ b/libcxx/include/__atomic/memory_order.h
@@ -13,10 +13,6 @@
 #include <__type_traits/is_same.h>
 #include <__type_traits/underlying_type.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Figure out what the underlying type for `memory_order` would be if it were
diff --git a/libcxx/include/__availability b/libcxx/include/__availability
--- a/libcxx/include/__availability
+++ b/libcxx/include/__availability
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 // Libc++ is shipped by various vendors. In particular, it is used as a system
 // library on macOS, iOS and other Apple platforms. In order for users to be
 // able to compile a binary that is intended to be deployed to an older version
diff --git a/libcxx/include/__bit/bit_cast.h b/libcxx/include/__bit/bit_cast.h
--- a/libcxx/include/__bit/bit_cast.h
+++ b/libcxx/include/__bit/bit_cast.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__type_traits/is_trivially_copyable.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__bit/bit_ceil.h b/libcxx/include/__bit/bit_ceil.h
--- a/libcxx/include/__bit/bit_ceil.h
+++ b/libcxx/include/__bit/bit_ceil.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__bit/bit_floor.h b/libcxx/include/__bit/bit_floor.h
--- a/libcxx/include/__bit/bit_floor.h
+++ b/libcxx/include/__bit/bit_floor.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__bit/bit_log2.h b/libcxx/include/__bit/bit_log2.h
--- a/libcxx/include/__bit/bit_log2.h
+++ b/libcxx/include/__bit/bit_log2.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__bit/bit_width.h b/libcxx/include/__bit/bit_width.h
--- a/libcxx/include/__bit/bit_width.h
+++ b/libcxx/include/__bit/bit_width.h
@@ -13,10 +13,6 @@
 #include <__concepts/arithmetic.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__bit/blsr.h b/libcxx/include/__bit/blsr.h
--- a/libcxx/include/__bit/blsr.h
+++ b/libcxx/include/__bit/blsr.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unsigned __libcpp_blsr(unsigned __x) _NOEXCEPT {
diff --git a/libcxx/include/__bit/byteswap.h b/libcxx/include/__bit/byteswap.h
--- a/libcxx/include/__bit/byteswap.h
+++ b/libcxx/include/__bit/byteswap.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 23
diff --git a/libcxx/include/__bit/countl.h b/libcxx/include/__bit/countl.h
--- a/libcxx/include/__bit/countl.h
+++ b/libcxx/include/__bit/countl.h
@@ -15,10 +15,6 @@
 #include <__type_traits/is_unsigned_integer.h>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__bit/countr.h b/libcxx/include/__bit/countr.h
--- a/libcxx/include/__bit/countr.h
+++ b/libcxx/include/__bit/countr.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__bit/endian.h b/libcxx/include/__bit/endian.h
--- a/libcxx/include/__bit/endian.h
+++ b/libcxx/include/__bit/endian.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__bit/has_single_bit.h b/libcxx/include/__bit/has_single_bit.h
--- a/libcxx/include/__bit/has_single_bit.h
+++ b/libcxx/include/__bit/has_single_bit.h
@@ -12,10 +12,6 @@
 #include <__concepts/arithmetic.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__bit/popcount.h b/libcxx/include/__bit/popcount.h
--- a/libcxx/include/__bit/popcount.h
+++ b/libcxx/include/__bit/popcount.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__bit/rotate.h b/libcxx/include/__bit/rotate.h
--- a/libcxx/include/__bit/rotate.h
+++ b/libcxx/include/__bit/rotate.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_unsigned_integer.h>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template<class _Tp>
diff --git a/libcxx/include/__bit_reference b/libcxx/include/__bit_reference
--- a/libcxx/include/__bit_reference
+++ b/libcxx/include/__bit_reference
@@ -23,10 +23,6 @@
 #include <__utility/swap.h>
 #include <cstring>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__charconv/chars_format.h b/libcxx/include/__charconv/chars_format.h
--- a/libcxx/include/__charconv/chars_format.h
+++ b/libcxx/include/__charconv/chars_format.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__utility/to_underlying.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__charconv/from_chars_integral.h b/libcxx/include/__charconv/from_chars_integral.h
--- a/libcxx/include/__charconv/from_chars_integral.h
+++ b/libcxx/include/__charconv/from_chars_integral.h
@@ -23,10 +23,6 @@
 #include <__type_traits/make_unsigned.h>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__charconv/from_chars_result.h b/libcxx/include/__charconv/from_chars_result.h
--- a/libcxx/include/__charconv/from_chars_result.h
+++ b/libcxx/include/__charconv/from_chars_result.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__system_error/errc.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__charconv/tables.h b/libcxx/include/__charconv/tables.h
--- a/libcxx/include/__charconv/tables.h
+++ b/libcxx/include/__charconv/tables.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__charconv/to_chars.h b/libcxx/include/__charconv/to_chars.h
--- a/libcxx/include/__charconv/to_chars.h
+++ b/libcxx/include/__charconv/to_chars.h
@@ -14,10 +14,6 @@
 #include <__charconv/to_chars_integral.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 _LIBCPP_END_NAMESPACE_STD
diff --git a/libcxx/include/__charconv/to_chars_base_10.h b/libcxx/include/__charconv/to_chars_base_10.h
--- a/libcxx/include/__charconv/to_chars_base_10.h
+++ b/libcxx/include/__charconv/to_chars_base_10.h
@@ -16,10 +16,6 @@
 #include <cstdint>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__charconv/to_chars_floating_point.h b/libcxx/include/__charconv/to_chars_floating_point.h
--- a/libcxx/include/__charconv/to_chars_floating_point.h
+++ b/libcxx/include/__charconv/to_chars_floating_point.h
@@ -15,10 +15,6 @@
 #include <__charconv/to_chars_result.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__charconv/to_chars_integral.h b/libcxx/include/__charconv/to_chars_integral.h
--- a/libcxx/include/__charconv/to_chars_integral.h
+++ b/libcxx/include/__charconv/to_chars_integral.h
@@ -28,10 +28,6 @@
 #include <cstdint>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__charconv/to_chars_result.h b/libcxx/include/__charconv/to_chars_result.h
--- a/libcxx/include/__charconv/to_chars_result.h
+++ b/libcxx/include/__charconv/to_chars_result.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__system_error/errc.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__charconv/traits.h b/libcxx/include/__charconv/traits.h
--- a/libcxx/include/__charconv/traits.h
+++ b/libcxx/include/__charconv/traits.h
@@ -19,10 +19,6 @@
 #include <cstdint>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__chrono/calendar.h b/libcxx/include/__chrono/calendar.h
--- a/libcxx/include/__chrono/calendar.h
+++ b/libcxx/include/__chrono/calendar.h
@@ -14,10 +14,6 @@
 #include <__chrono/time_point.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__chrono/concepts.h b/libcxx/include/__chrono/concepts.h
--- a/libcxx/include/__chrono/concepts.h
+++ b/libcxx/include/__chrono/concepts.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <__type_traits/is_specialization.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__chrono/convert_to_timespec.h b/libcxx/include/__chrono/convert_to_timespec.h
--- a/libcxx/include/__chrono/convert_to_timespec.h
+++ b/libcxx/include/__chrono/convert_to_timespec.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__chrono/convert_to_tm.h b/libcxx/include/__chrono/convert_to_tm.h
--- a/libcxx/include/__chrono/convert_to_tm.h
+++ b/libcxx/include/__chrono/convert_to_tm.h
@@ -35,10 +35,6 @@
 #include <ctime>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__chrono/day.h b/libcxx/include/__chrono/day.h
--- a/libcxx/include/__chrono/day.h
+++ b/libcxx/include/__chrono/day.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__chrono/duration.h b/libcxx/include/__chrono/duration.h
--- a/libcxx/include/__chrono/duration.h
+++ b/libcxx/include/__chrono/duration.h
@@ -20,10 +20,6 @@
 #include <limits>
 #include <ratio>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__chrono/file_clock.h b/libcxx/include/__chrono/file_clock.h
--- a/libcxx/include/__chrono/file_clock.h
+++ b/libcxx/include/__chrono/file_clock.h
@@ -17,10 +17,6 @@
 #include <__config>
 #include <ratio>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
 struct _FilesystemClock;
diff --git a/libcxx/include/__chrono/formatter.h b/libcxx/include/__chrono/formatter.h
--- a/libcxx/include/__chrono/formatter.h
+++ b/libcxx/include/__chrono/formatter.h
@@ -47,10 +47,6 @@
 #include <string>
 #include <string_view>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__chrono/hh_mm_ss.h b/libcxx/include/__chrono/hh_mm_ss.h
--- a/libcxx/include/__chrono/hh_mm_ss.h
+++ b/libcxx/include/__chrono/hh_mm_ss.h
@@ -16,10 +16,6 @@
 #include <__type_traits/common_type.h>
 #include <ratio>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__chrono/high_resolution_clock.h b/libcxx/include/__chrono/high_resolution_clock.h
--- a/libcxx/include/__chrono/high_resolution_clock.h
+++ b/libcxx/include/__chrono/high_resolution_clock.h
@@ -14,10 +14,6 @@
 #include <__chrono/system_clock.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 namespace chrono
diff --git a/libcxx/include/__chrono/literals.h b/libcxx/include/__chrono/literals.h
--- a/libcxx/include/__chrono/literals.h
+++ b/libcxx/include/__chrono/literals.h
@@ -14,10 +14,6 @@
 #include <__chrono/year.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__chrono/month.h b/libcxx/include/__chrono/month.h
--- a/libcxx/include/__chrono/month.h
+++ b/libcxx/include/__chrono/month.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__chrono/month_weekday.h b/libcxx/include/__chrono/month_weekday.h
--- a/libcxx/include/__chrono/month_weekday.h
+++ b/libcxx/include/__chrono/month_weekday.h
@@ -14,10 +14,6 @@
 #include <__chrono/weekday.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__chrono/monthday.h b/libcxx/include/__chrono/monthday.h
--- a/libcxx/include/__chrono/monthday.h
+++ b/libcxx/include/__chrono/monthday.h
@@ -16,10 +16,6 @@
 #include <__config>
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__chrono/ostream.h b/libcxx/include/__chrono/ostream.h
--- a/libcxx/include/__chrono/ostream.h
+++ b/libcxx/include/__chrono/ostream.h
@@ -31,10 +31,6 @@
 #include <ostream>
 #include <ratio>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__chrono/parser_std_format_spec.h b/libcxx/include/__chrono/parser_std_format_spec.h
--- a/libcxx/include/__chrono/parser_std_format_spec.h
+++ b/libcxx/include/__chrono/parser_std_format_spec.h
@@ -18,10 +18,6 @@
 #include <__format/parser_std_format_spec.h>
 #include <string_view>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__chrono/statically_widen.h b/libcxx/include/__chrono/statically_widen.h
--- a/libcxx/include/__chrono/statically_widen.h
+++ b/libcxx/include/__chrono/statically_widen.h
@@ -16,10 +16,6 @@
 #include <__config>
 #include <__format/concepts.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__chrono/steady_clock.h b/libcxx/include/__chrono/steady_clock.h
--- a/libcxx/include/__chrono/steady_clock.h
+++ b/libcxx/include/__chrono/steady_clock.h
@@ -14,10 +14,6 @@
 #include <__chrono/time_point.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 namespace chrono
diff --git a/libcxx/include/__chrono/system_clock.h b/libcxx/include/__chrono/system_clock.h
--- a/libcxx/include/__chrono/system_clock.h
+++ b/libcxx/include/__chrono/system_clock.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <ctime>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 namespace chrono
diff --git a/libcxx/include/__chrono/time_point.h b/libcxx/include/__chrono/time_point.h
--- a/libcxx/include/__chrono/time_point.h
+++ b/libcxx/include/__chrono/time_point.h
@@ -19,10 +19,6 @@
 #include <__type_traits/is_convertible.h>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__chrono/weekday.h b/libcxx/include/__chrono/weekday.h
--- a/libcxx/include/__chrono/weekday.h
+++ b/libcxx/include/__chrono/weekday.h
@@ -16,10 +16,6 @@
 #include <__chrono/time_point.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__chrono/year.h b/libcxx/include/__chrono/year.h
--- a/libcxx/include/__chrono/year.h
+++ b/libcxx/include/__chrono/year.h
@@ -15,10 +15,6 @@
 #include <compare>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__chrono/year_month.h b/libcxx/include/__chrono/year_month.h
--- a/libcxx/include/__chrono/year_month.h
+++ b/libcxx/include/__chrono/year_month.h
@@ -16,10 +16,6 @@
 #include <__config>
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__chrono/year_month_day.h b/libcxx/include/__chrono/year_month_day.h
--- a/libcxx/include/__chrono/year_month_day.h
+++ b/libcxx/include/__chrono/year_month_day.h
@@ -23,10 +23,6 @@
 #include <compare>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__chrono/year_month_weekday.h b/libcxx/include/__chrono/year_month_weekday.h
--- a/libcxx/include/__chrono/year_month_weekday.h
+++ b/libcxx/include/__chrono/year_month_weekday.h
@@ -23,10 +23,6 @@
 #include <__chrono/year_month_day.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__compare/common_comparison_category.h b/libcxx/include/__compare/common_comparison_category.h
--- a/libcxx/include/__compare/common_comparison_category.h
+++ b/libcxx/include/__compare/common_comparison_category.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_same.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__compare/compare_partial_order_fallback.h b/libcxx/include/__compare/compare_partial_order_fallback.h
--- a/libcxx/include/__compare/compare_partial_order_fallback.h
+++ b/libcxx/include/__compare/compare_partial_order_fallback.h
@@ -17,10 +17,6 @@
 #include <__utility/forward.h>
 #include <__utility/priority_tag.h>
 
-#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__compare/compare_strong_order_fallback.h b/libcxx/include/__compare/compare_strong_order_fallback.h
--- a/libcxx/include/__compare/compare_strong_order_fallback.h
+++ b/libcxx/include/__compare/compare_strong_order_fallback.h
@@ -17,10 +17,6 @@
 #include <__utility/forward.h>
 #include <__utility/priority_tag.h>
 
-#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__compare/compare_three_way.h b/libcxx/include/__compare/compare_three_way.h
--- a/libcxx/include/__compare/compare_three_way.h
+++ b/libcxx/include/__compare/compare_three_way.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__compare/compare_three_way_result.h b/libcxx/include/__compare/compare_three_way_result.h
--- a/libcxx/include/__compare/compare_three_way_result.h
+++ b/libcxx/include/__compare/compare_three_way_result.h
@@ -13,10 +13,6 @@
 #include <__type_traits/make_const_lvalue_ref.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__compare/compare_weak_order_fallback.h b/libcxx/include/__compare/compare_weak_order_fallback.h
--- a/libcxx/include/__compare/compare_weak_order_fallback.h
+++ b/libcxx/include/__compare/compare_weak_order_fallback.h
@@ -17,10 +17,6 @@
 #include <__utility/forward.h>
 #include <__utility/priority_tag.h>
 
-#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__compare/is_eq.h b/libcxx/include/__compare/is_eq.h
--- a/libcxx/include/__compare/is_eq.h
+++ b/libcxx/include/__compare/is_eq.h
@@ -12,10 +12,6 @@
 #include <__compare/ordering.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__compare/ordering.h b/libcxx/include/__compare/ordering.h
--- a/libcxx/include/__compare/ordering.h
+++ b/libcxx/include/__compare/ordering.h
@@ -13,10 +13,6 @@
 #include <__type_traits/enable_if.h>
 #include <__type_traits/is_same.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__compare/partial_order.h b/libcxx/include/__compare/partial_order.h
--- a/libcxx/include/__compare/partial_order.h
+++ b/libcxx/include/__compare/partial_order.h
@@ -18,10 +18,6 @@
 #include <__utility/forward.h>
 #include <__utility/priority_tag.h>
 
-#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__compare/strong_order.h b/libcxx/include/__compare/strong_order.h
--- a/libcxx/include/__compare/strong_order.h
+++ b/libcxx/include/__compare/strong_order.h
@@ -21,10 +21,6 @@
 #include <cstdint>
 #include <limits>
 
-#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__compare/synth_three_way.h b/libcxx/include/__compare/synth_three_way.h
--- a/libcxx/include/__compare/synth_three_way.h
+++ b/libcxx/include/__compare/synth_three_way.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__compare/three_way_comparable.h b/libcxx/include/__compare/three_way_comparable.h
--- a/libcxx/include/__compare/three_way_comparable.h
+++ b/libcxx/include/__compare/three_way_comparable.h
@@ -19,10 +19,6 @@
 #include <__type_traits/common_reference.h>
 #include <__type_traits/make_const_lvalue_ref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__compare/weak_order.h b/libcxx/include/__compare/weak_order.h
--- a/libcxx/include/__compare/weak_order.h
+++ b/libcxx/include/__compare/weak_order.h
@@ -18,10 +18,6 @@
 #include <__utility/priority_tag.h>
 #include <cmath>
 
-#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/arithmetic.h b/libcxx/include/__concepts/arithmetic.h
--- a/libcxx/include/__concepts/arithmetic.h
+++ b/libcxx/include/__concepts/arithmetic.h
@@ -16,10 +16,6 @@
 #include <__type_traits/is_signed_integer.h>
 #include <__type_traits/is_unsigned_integer.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/assignable.h b/libcxx/include/__concepts/assignable.h
--- a/libcxx/include/__concepts/assignable.h
+++ b/libcxx/include/__concepts/assignable.h
@@ -16,10 +16,6 @@
 #include <__type_traits/make_const_lvalue_ref.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/boolean_testable.h b/libcxx/include/__concepts/boolean_testable.h
--- a/libcxx/include/__concepts/boolean_testable.h
+++ b/libcxx/include/__concepts/boolean_testable.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/class_or_enum.h b/libcxx/include/__concepts/class_or_enum.h
--- a/libcxx/include/__concepts/class_or_enum.h
+++ b/libcxx/include/__concepts/class_or_enum.h
@@ -15,10 +15,6 @@
 #include <__type_traits/is_union.h>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/common_reference_with.h b/libcxx/include/__concepts/common_reference_with.h
--- a/libcxx/include/__concepts/common_reference_with.h
+++ b/libcxx/include/__concepts/common_reference_with.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__type_traits/common_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/common_with.h b/libcxx/include/__concepts/common_with.h
--- a/libcxx/include/__concepts/common_with.h
+++ b/libcxx/include/__concepts/common_with.h
@@ -17,10 +17,6 @@
 #include <__type_traits/common_type.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/constructible.h b/libcxx/include/__concepts/constructible.h
--- a/libcxx/include/__concepts/constructible.h
+++ b/libcxx/include/__concepts/constructible.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__type_traits/is_constructible.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/convertible_to.h b/libcxx/include/__concepts/convertible_to.h
--- a/libcxx/include/__concepts/convertible_to.h
+++ b/libcxx/include/__concepts/convertible_to.h
@@ -13,10 +13,6 @@
 #include <__type_traits/is_convertible.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/copyable.h b/libcxx/include/__concepts/copyable.h
--- a/libcxx/include/__concepts/copyable.h
+++ b/libcxx/include/__concepts/copyable.h
@@ -14,10 +14,6 @@
 #include <__concepts/movable.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/derived_from.h b/libcxx/include/__concepts/derived_from.h
--- a/libcxx/include/__concepts/derived_from.h
+++ b/libcxx/include/__concepts/derived_from.h
@@ -13,10 +13,6 @@
 #include <__type_traits/is_base_of.h>
 #include <__type_traits/is_convertible.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/destructible.h b/libcxx/include/__concepts/destructible.h
--- a/libcxx/include/__concepts/destructible.h
+++ b/libcxx/include/__concepts/destructible.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/is_nothrow_destructible.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/different_from.h b/libcxx/include/__concepts/different_from.h
--- a/libcxx/include/__concepts/different_from.h
+++ b/libcxx/include/__concepts/different_from.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/equality_comparable.h b/libcxx/include/__concepts/equality_comparable.h
--- a/libcxx/include/__concepts/equality_comparable.h
+++ b/libcxx/include/__concepts/equality_comparable.h
@@ -15,10 +15,6 @@
 #include <__type_traits/common_reference.h>
 #include <__type_traits/make_const_lvalue_ref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/invocable.h b/libcxx/include/__concepts/invocable.h
--- a/libcxx/include/__concepts/invocable.h
+++ b/libcxx/include/__concepts/invocable.h
@@ -13,10 +13,6 @@
 #include <__functional/invoke.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/movable.h b/libcxx/include/__concepts/movable.h
--- a/libcxx/include/__concepts/movable.h
+++ b/libcxx/include/__concepts/movable.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <__type_traits/is_object.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/predicate.h b/libcxx/include/__concepts/predicate.h
--- a/libcxx/include/__concepts/predicate.h
+++ b/libcxx/include/__concepts/predicate.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__functional/invoke.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/regular.h b/libcxx/include/__concepts/regular.h
--- a/libcxx/include/__concepts/regular.h
+++ b/libcxx/include/__concepts/regular.h
@@ -13,10 +13,6 @@
 #include <__concepts/semiregular.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/relation.h b/libcxx/include/__concepts/relation.h
--- a/libcxx/include/__concepts/relation.h
+++ b/libcxx/include/__concepts/relation.h
@@ -12,10 +12,6 @@
 #include <__concepts/predicate.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/same_as.h b/libcxx/include/__concepts/same_as.h
--- a/libcxx/include/__concepts/same_as.h
+++ b/libcxx/include/__concepts/same_as.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/is_same.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/semiregular.h b/libcxx/include/__concepts/semiregular.h
--- a/libcxx/include/__concepts/semiregular.h
+++ b/libcxx/include/__concepts/semiregular.h
@@ -13,10 +13,6 @@
 #include <__concepts/copyable.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/swappable.h b/libcxx/include/__concepts/swappable.h
--- a/libcxx/include/__concepts/swappable.h
+++ b/libcxx/include/__concepts/swappable.h
@@ -24,10 +24,6 @@
 #include <__utility/swap.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__concepts/totally_ordered.h b/libcxx/include/__concepts/totally_ordered.h
--- a/libcxx/include/__concepts/totally_ordered.h
+++ b/libcxx/include/__concepts/totally_ordered.h
@@ -15,10 +15,6 @@
 #include <__type_traits/common_reference.h>
 #include <__type_traits/make_const_lvalue_ref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__condition_variable/condition_variable.h b/libcxx/include/__condition_variable/condition_variable.h
--- a/libcxx/include/__condition_variable/condition_variable.h
+++ b/libcxx/include/__condition_variable/condition_variable.h
@@ -22,10 +22,6 @@
 #include <__utility/move.h>
 #include <ratio>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__config b/libcxx/include/__config
--- a/libcxx/include/__config
+++ b/libcxx/include/__config
@@ -12,16 +12,6 @@
 
 #include <__config_site>
 
-#if defined(_MSC_VER) && !defined(__clang__)
-#  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#    define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
-#  endif
-#endif
-
-#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
-#  pragma GCC system_header
-#endif
-
 #if defined(__apple_build_version__)
 // Given AppleClang XX.Y.Z, _LIBCPP_APPLE_CLANG_VER is XXYZ (e.g. AppleClang 14.0.3 => 1403)
 #  define _LIBCPP_COMPILER_CLANG_BASED
diff --git a/libcxx/include/__coroutine/coroutine_handle.h b/libcxx/include/__coroutine/coroutine_handle.h
--- a/libcxx/include/__coroutine/coroutine_handle.h
+++ b/libcxx/include/__coroutine/coroutine_handle.h
@@ -17,10 +17,6 @@
 #include <compare>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__coroutine/coroutine_traits.h b/libcxx/include/__coroutine/coroutine_traits.h
--- a/libcxx/include/__coroutine/coroutine_traits.h
+++ b/libcxx/include/__coroutine/coroutine_traits.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/void_t.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__coroutine/noop_coroutine_handle.h b/libcxx/include/__coroutine/noop_coroutine_handle.h
--- a/libcxx/include/__coroutine/noop_coroutine_handle.h
+++ b/libcxx/include/__coroutine/noop_coroutine_handle.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__coroutine/coroutine_handle.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__coroutine/trivial_awaitables.h b/libcxx/include/__coroutine/trivial_awaitables.h
--- a/libcxx/include/__coroutine/trivial_awaitables.h
+++ b/libcxx/include/__coroutine/trivial_awaitables.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__coroutine/coroutine_handle.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__debug b/libcxx/include/__debug
--- a/libcxx/include/__debug
+++ b/libcxx/include/__debug
@@ -15,10 +15,6 @@
 #include <__type_traits/is_constant_evaluated.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if defined(_LIBCPP_ENABLE_DEBUG_MODE) && !defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY)
 # define _LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY
 #endif
diff --git a/libcxx/include/__debug_utils/randomize_range.h b/libcxx/include/__debug_utils/randomize_range.h
--- a/libcxx/include/__debug_utils/randomize_range.h
+++ b/libcxx/include/__debug_utils/randomize_range.h
@@ -16,10 +16,6 @@
 #  include <__type_traits/is_constant_evaluated.h>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _AlgPolicy, class _Iterator, class _Sentinel>
diff --git a/libcxx/include/__debug_utils/strict_weak_ordering_check.h b/libcxx/include/__debug_utils/strict_weak_ordering_check.h
--- a/libcxx/include/__debug_utils/strict_weak_ordering_check.h
+++ b/libcxx/include/__debug_utils/strict_weak_ordering_check.h
@@ -17,10 +17,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__type_traits/is_constant_evaluated.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _RandomAccessIterator, class _Comp>
diff --git a/libcxx/include/__exception/exception.h b/libcxx/include/__exception/exception.h
--- a/libcxx/include/__exception/exception.h
+++ b/libcxx/include/__exception/exception.h
@@ -17,10 +17,6 @@
 #  include <vcruntime_exception.h>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 namespace std { // purposefully not using versioning namespace
 
 #if defined(_LIBCPP_ABI_VCRUNTIME) && (!defined(_HAS_EXCEPTIONS) || _HAS_EXCEPTIONS != 0)
diff --git a/libcxx/include/__exception/exception_ptr.h b/libcxx/include/__exception/exception_ptr.h
--- a/libcxx/include/__exception/exception_ptr.h
+++ b/libcxx/include/__exception/exception_ptr.h
@@ -15,10 +15,6 @@
 #include <cstddef>
 #include <cstdlib>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 namespace std { // purposefully not using versioning namespace
 
 #ifndef _LIBCPP_ABI_MICROSOFT
diff --git a/libcxx/include/__exception/nested_exception.h b/libcxx/include/__exception/nested_exception.h
--- a/libcxx/include/__exception/nested_exception.h
+++ b/libcxx/include/__exception/nested_exception.h
@@ -22,10 +22,6 @@
 #include <__utility/forward.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 namespace std { // purposefully not using versioning namespace
 
 class _LIBCPP_EXPORTED_FROM_ABI nested_exception {
diff --git a/libcxx/include/__exception/operations.h b/libcxx/include/__exception/operations.h
--- a/libcxx/include/__exception/operations.h
+++ b/libcxx/include/__exception/operations.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 namespace std { // purposefully not using versioning namespace
 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS) ||                             \
     defined(_LIBCPP_BUILDING_LIBRARY)
diff --git a/libcxx/include/__exception/terminate.h b/libcxx/include/__exception/terminate.h
--- a/libcxx/include/__exception/terminate.h
+++ b/libcxx/include/__exception/terminate.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 namespace std { // purposefully not using versioning namespace
 _LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void terminate() _NOEXCEPT;
 } // namespace std
diff --git a/libcxx/include/__expected/bad_expected_access.h b/libcxx/include/__expected/bad_expected_access.h
--- a/libcxx/include/__expected/bad_expected_access.h
+++ b/libcxx/include/__expected/bad_expected_access.h
@@ -13,10 +13,6 @@
 #include <__exception/exception.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 23
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__expected/expected.h b/libcxx/include/__expected/expected.h
--- a/libcxx/include/__expected/expected.h
+++ b/libcxx/include/__expected/expected.h
@@ -54,10 +54,6 @@
 #include <__verbose_abort>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 23
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__expected/unexpect.h b/libcxx/include/__expected/unexpect.h
--- a/libcxx/include/__expected/unexpect.h
+++ b/libcxx/include/__expected/unexpect.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 23
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__expected/unexpected.h b/libcxx/include/__expected/unexpected.h
--- a/libcxx/include/__expected/unexpected.h
+++ b/libcxx/include/__expected/unexpected.h
@@ -27,10 +27,6 @@
 #include <__utility/swap.h>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 23
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__filesystem/copy_options.h b/libcxx/include/__filesystem/copy_options.h
--- a/libcxx/include/__filesystem/copy_options.h
+++ b/libcxx/include/__filesystem/copy_options.h
@@ -13,10 +13,6 @@
 #include <__availability>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/directory_entry.h b/libcxx/include/__filesystem/directory_entry.h
--- a/libcxx/include/__filesystem/directory_entry.h
+++ b/libcxx/include/__filesystem/directory_entry.h
@@ -28,10 +28,6 @@
 #include <cstdint>
 #include <iosfwd>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__filesystem/directory_iterator.h b/libcxx/include/__filesystem/directory_iterator.h
--- a/libcxx/include/__filesystem/directory_iterator.h
+++ b/libcxx/include/__filesystem/directory_iterator.h
@@ -24,10 +24,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/directory_options.h b/libcxx/include/__filesystem/directory_options.h
--- a/libcxx/include/__filesystem/directory_options.h
+++ b/libcxx/include/__filesystem/directory_options.h
@@ -13,10 +13,6 @@
 #include <__availability>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/file_status.h b/libcxx/include/__filesystem/file_status.h
--- a/libcxx/include/__filesystem/file_status.h
+++ b/libcxx/include/__filesystem/file_status.h
@@ -15,10 +15,6 @@
 #include <__filesystem/file_type.h>
 #include <__filesystem/perms.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/file_time_type.h b/libcxx/include/__filesystem/file_time_type.h
--- a/libcxx/include/__filesystem/file_time_type.h
+++ b/libcxx/include/__filesystem/file_time_type.h
@@ -15,10 +15,6 @@
 #include <__chrono/time_point.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/file_type.h b/libcxx/include/__filesystem/file_type.h
--- a/libcxx/include/__filesystem/file_type.h
+++ b/libcxx/include/__filesystem/file_type.h
@@ -13,10 +13,6 @@
 #include <__availability>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/filesystem_error.h b/libcxx/include/__filesystem/filesystem_error.h
--- a/libcxx/include/__filesystem/filesystem_error.h
+++ b/libcxx/include/__filesystem/filesystem_error.h
@@ -22,10 +22,6 @@
 #include <new>
 #include <string>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/operations.h b/libcxx/include/__filesystem/operations.h
--- a/libcxx/include/__filesystem/operations.h
+++ b/libcxx/include/__filesystem/operations.h
@@ -24,10 +24,6 @@
 #include <__system_error/error_code.h>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/path.h b/libcxx/include/__filesystem/path.h
--- a/libcxx/include/__filesystem/path.h
+++ b/libcxx/include/__filesystem/path.h
@@ -31,10 +31,6 @@
 # include <locale>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/path_iterator.h b/libcxx/include/__filesystem/path_iterator.h
--- a/libcxx/include/__filesystem/path_iterator.h
+++ b/libcxx/include/__filesystem/path_iterator.h
@@ -19,10 +19,6 @@
 #include <string>
 #include <string_view>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/perm_options.h b/libcxx/include/__filesystem/perm_options.h
--- a/libcxx/include/__filesystem/perm_options.h
+++ b/libcxx/include/__filesystem/perm_options.h
@@ -13,10 +13,6 @@
 #include <__availability>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/perms.h b/libcxx/include/__filesystem/perms.h
--- a/libcxx/include/__filesystem/perms.h
+++ b/libcxx/include/__filesystem/perms.h
@@ -13,10 +13,6 @@
 #include <__availability>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/recursive_directory_iterator.h b/libcxx/include/__filesystem/recursive_directory_iterator.h
--- a/libcxx/include/__filesystem/recursive_directory_iterator.h
+++ b/libcxx/include/__filesystem/recursive_directory_iterator.h
@@ -23,10 +23,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/space_info.h b/libcxx/include/__filesystem/space_info.h
--- a/libcxx/include/__filesystem/space_info.h
+++ b/libcxx/include/__filesystem/space_info.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__filesystem/u8path.h b/libcxx/include/__filesystem/u8path.h
--- a/libcxx/include/__filesystem/u8path.h
+++ b/libcxx/include/__filesystem/u8path.h
@@ -22,10 +22,6 @@
 # include <locale>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
diff --git a/libcxx/include/__format/buffer.h b/libcxx/include/__format/buffer.h
--- a/libcxx/include/__format/buffer.h
+++ b/libcxx/include/__format/buffer.h
@@ -40,10 +40,6 @@
 #include <cstddef>
 #include <string_view>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__format/concepts.h b/libcxx/include/__format/concepts.h
--- a/libcxx/include/__format/concepts.h
+++ b/libcxx/include/__format/concepts.h
@@ -19,10 +19,6 @@
 #include <__utility/pair.h>
 #include <tuple>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/container_adaptor.h b/libcxx/include/__format/container_adaptor.h
--- a/libcxx/include/__format/container_adaptor.h
+++ b/libcxx/include/__format/container_adaptor.h
@@ -10,10 +10,6 @@
 #ifndef _LIBCPP___FORMAT_CONTAINER_ADAPTOR_H
 #define _LIBCPP___FORMAT_CONTAINER_ADAPTOR_H
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #include <__availability>
 #include <__config>
 #include <__format/concepts.h>
diff --git a/libcxx/include/__format/enable_insertable.h b/libcxx/include/__format/enable_insertable.h
--- a/libcxx/include/__format/enable_insertable.h
+++ b/libcxx/include/__format/enable_insertable.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/escaped_output_table.h b/libcxx/include/__format/escaped_output_table.h
--- a/libcxx/include/__format/escaped_output_table.h
+++ b/libcxx/include/__format/escaped_output_table.h
@@ -66,10 +66,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 23
diff --git a/libcxx/include/__format/extended_grapheme_cluster_table.h b/libcxx/include/__format/extended_grapheme_cluster_table.h
--- a/libcxx/include/__format/extended_grapheme_cluster_table.h
+++ b/libcxx/include/__format/extended_grapheme_cluster_table.h
@@ -67,10 +67,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/format_arg.h b/libcxx/include/__format/format_arg.h
--- a/libcxx/include/__format/format_arg.h
+++ b/libcxx/include/__format/format_arg.h
@@ -27,10 +27,6 @@
 #include <string>
 #include <string_view>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/format_arg_store.h b/libcxx/include/__format/format_arg_store.h
--- a/libcxx/include/__format/format_arg_store.h
+++ b/libcxx/include/__format/format_arg_store.h
@@ -10,10 +10,6 @@
 #ifndef _LIBCPP___FORMAT_FORMAT_ARG_STORE_H
 #define _LIBCPP___FORMAT_FORMAT_ARG_STORE_H
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #include <__concepts/arithmetic.h>
 #include <__concepts/same_as.h>
 #include <__config>
diff --git a/libcxx/include/__format/format_args.h b/libcxx/include/__format/format_args.h
--- a/libcxx/include/__format/format_args.h
+++ b/libcxx/include/__format/format_args.h
@@ -18,10 +18,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/format_context.h b/libcxx/include/__format/format_context.h
--- a/libcxx/include/__format/format_context.h
+++ b/libcxx/include/__format/format_context.h
@@ -31,10 +31,6 @@
 #include <optional>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/format_error.h b/libcxx/include/__format/format_error.h
--- a/libcxx/include/__format/format_error.h
+++ b/libcxx/include/__format/format_error.h
@@ -14,10 +14,6 @@
 #include <cstdlib>
 #include <stdexcept>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/format_functions.h b/libcxx/include/__format/format_functions.h
--- a/libcxx/include/__format/format_functions.h
+++ b/libcxx/include/__format/format_functions.h
@@ -46,10 +46,6 @@
 #include <locale>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/format_fwd.h b/libcxx/include/__format/format_fwd.h
--- a/libcxx/include/__format/format_fwd.h
+++ b/libcxx/include/__format/format_fwd.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__iterator/concepts.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/format_parse_context.h b/libcxx/include/__format/format_parse_context.h
--- a/libcxx/include/__format/format_parse_context.h
+++ b/libcxx/include/__format/format_parse_context.h
@@ -15,10 +15,6 @@
 #include <__type_traits/is_constant_evaluated.h>
 #include <string_view>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/format_string.h b/libcxx/include/__format/format_string.h
--- a/libcxx/include/__format/format_string.h
+++ b/libcxx/include/__format/format_string.h
@@ -18,10 +18,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/format_to_n_result.h b/libcxx/include/__format/format_to_n_result.h
--- a/libcxx/include/__format/format_to_n_result.h
+++ b/libcxx/include/__format/format_to_n_result.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__iterator/incrementable_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/formatter.h b/libcxx/include/__format/formatter.h
--- a/libcxx/include/__format/formatter.h
+++ b/libcxx/include/__format/formatter.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__format/format_fwd.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/formatter_bool.h b/libcxx/include/__format/formatter_bool.h
--- a/libcxx/include/__format/formatter_bool.h
+++ b/libcxx/include/__format/formatter_bool.h
@@ -27,10 +27,6 @@
 #  include <locale>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/formatter_char.h b/libcxx/include/__format/formatter_char.h
--- a/libcxx/include/__format/formatter_char.h
+++ b/libcxx/include/__format/formatter_char.h
@@ -22,10 +22,6 @@
 #include <__type_traits/conditional.h>
 #include <__type_traits/is_signed.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/formatter_floating_point.h b/libcxx/include/__format/formatter_floating_point.h
--- a/libcxx/include/__format/formatter_floating_point.h
+++ b/libcxx/include/__format/formatter_floating_point.h
@@ -40,10 +40,6 @@
 #  include <locale>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__format/formatter_integer.h b/libcxx/include/__format/formatter_integer.h
--- a/libcxx/include/__format/formatter_integer.h
+++ b/libcxx/include/__format/formatter_integer.h
@@ -22,10 +22,6 @@
 #include <__type_traits/is_same.h>
 #include <__type_traits/make_32_64_or_128_bit.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
     _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/formatter_integral.h b/libcxx/include/__format/formatter_integral.h
--- a/libcxx/include/__format/formatter_integral.h
+++ b/libcxx/include/__format/formatter_integral.h
@@ -32,10 +32,6 @@
 #  include <locale>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__format/formatter_output.h b/libcxx/include/__format/formatter_output.h
--- a/libcxx/include/__format/formatter_output.h
+++ b/libcxx/include/__format/formatter_output.h
@@ -37,10 +37,6 @@
 #include <string>
 #include <string_view>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/formatter_pointer.h b/libcxx/include/__format/formatter_pointer.h
--- a/libcxx/include/__format/formatter_pointer.h
+++ b/libcxx/include/__format/formatter_pointer.h
@@ -21,10 +21,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/formatter_string.h b/libcxx/include/__format/formatter_string.h
--- a/libcxx/include/__format/formatter_string.h
+++ b/libcxx/include/__format/formatter_string.h
@@ -21,10 +21,6 @@
 #include <string>
 #include <string_view>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/formatter_tuple.h b/libcxx/include/__format/formatter_tuple.h
--- a/libcxx/include/__format/formatter_tuple.h
+++ b/libcxx/include/__format/formatter_tuple.h
@@ -30,10 +30,6 @@
 #include <string_view>
 #include <tuple>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 23
diff --git a/libcxx/include/__format/parser_std_format_spec.h b/libcxx/include/__format/parser_std_format_spec.h
--- a/libcxx/include/__format/parser_std_format_spec.h
+++ b/libcxx/include/__format/parser_std_format_spec.h
@@ -39,10 +39,6 @@
 #include <cstdint>
 #include <string_view>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__format/range_default_formatter.h b/libcxx/include/__format/range_default_formatter.h
--- a/libcxx/include/__format/range_default_formatter.h
+++ b/libcxx/include/__format/range_default_formatter.h
@@ -10,10 +10,6 @@
 #ifndef _LIBCPP___FORMAT_RANGE_DEFAULT_FORMATTER_H
 #define _LIBCPP___FORMAT_RANGE_DEFAULT_FORMATTER_H
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #include <__algorithm/ranges_copy.h>
 #include <__availability>
 #include <__chrono/statically_widen.h>
diff --git a/libcxx/include/__format/range_formatter.h b/libcxx/include/__format/range_formatter.h
--- a/libcxx/include/__format/range_formatter.h
+++ b/libcxx/include/__format/range_formatter.h
@@ -10,10 +10,6 @@
 #ifndef _LIBCPP___FORMAT_RANGE_FORMATTER_H
 #define _LIBCPP___FORMAT_RANGE_FORMATTER_H
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #include <__algorithm/ranges_copy.h>
 #include <__availability>
 #include <__chrono/statically_widen.h>
diff --git a/libcxx/include/__format/unicode.h b/libcxx/include/__format/unicode.h
--- a/libcxx/include/__format/unicode.h
+++ b/libcxx/include/__format/unicode.h
@@ -21,10 +21,6 @@
 #include <__utility/unreachable.h>
 #include <string_view>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__format/width_estimation_table.h b/libcxx/include/__format/width_estimation_table.h
--- a/libcxx/include/__format/width_estimation_table.h
+++ b/libcxx/include/__format/width_estimation_table.h
@@ -66,10 +66,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__functional/binary_function.h b/libcxx/include/__functional/binary_function.h
--- a/libcxx/include/__functional/binary_function.h
+++ b/libcxx/include/__functional/binary_function.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION)
diff --git a/libcxx/include/__functional/binary_negate.h b/libcxx/include/__functional/binary_negate.h
--- a/libcxx/include/__functional/binary_negate.h
+++ b/libcxx/include/__functional/binary_negate.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__functional/binary_function.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS)
diff --git a/libcxx/include/__functional/bind.h b/libcxx/include/__functional/bind.h
--- a/libcxx/include/__functional/bind.h
+++ b/libcxx/include/__functional/bind.h
@@ -19,10 +19,6 @@
 #include <cstddef>
 #include <tuple>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template<class _Tp>
diff --git a/libcxx/include/__functional/bind_back.h b/libcxx/include/__functional/bind_back.h
--- a/libcxx/include/__functional/bind_back.h
+++ b/libcxx/include/__functional/bind_back.h
@@ -18,10 +18,6 @@
 #include <__utility/integer_sequence.h>
 #include <tuple>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__functional/bind_front.h b/libcxx/include/__functional/bind_front.h
--- a/libcxx/include/__functional/bind_front.h
+++ b/libcxx/include/__functional/bind_front.h
@@ -20,10 +20,6 @@
 #include <__type_traits/is_move_constructible.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__functional/binder1st.h b/libcxx/include/__functional/binder1st.h
--- a/libcxx/include/__functional/binder1st.h
+++ b/libcxx/include/__functional/binder1st.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__functional/unary_function.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)
diff --git a/libcxx/include/__functional/binder2nd.h b/libcxx/include/__functional/binder2nd.h
--- a/libcxx/include/__functional/binder2nd.h
+++ b/libcxx/include/__functional/binder2nd.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__functional/unary_function.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)
diff --git a/libcxx/include/__functional/boyer_moore_searcher.h b/libcxx/include/__functional/boyer_moore_searcher.h
--- a/libcxx/include/__functional/boyer_moore_searcher.h
+++ b/libcxx/include/__functional/boyer_moore_searcher.h
@@ -9,10 +9,6 @@
 #ifndef _LIBCPP___FUNCTIONAL_BOYER_MOORE_SEARCHER_H
 #define _LIBCPP___FUNCTIONAL_BOYER_MOORE_SEARCHER_H
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #include <__algorithm/fill_n.h>
 #include <__config>
 #include <__functional/hash.h>
diff --git a/libcxx/include/__functional/compose.h b/libcxx/include/__functional/compose.h
--- a/libcxx/include/__functional/compose.h
+++ b/libcxx/include/__functional/compose.h
@@ -16,10 +16,6 @@
 #include <__type_traits/decay.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__functional/default_searcher.h b/libcxx/include/__functional/default_searcher.h
--- a/libcxx/include/__functional/default_searcher.h
+++ b/libcxx/include/__functional/default_searcher.h
@@ -17,10 +17,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/pair.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__functional/function.h b/libcxx/include/__functional/function.h
--- a/libcxx/include/__functional/function.h
+++ b/libcxx/include/__functional/function.h
@@ -41,10 +41,6 @@
 #include <tuple>
 #include <typeinfo>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__functional/hash.h b/libcxx/include/__functional/hash.h
--- a/libcxx/include/__functional/hash.h
+++ b/libcxx/include/__functional/hash.h
@@ -28,10 +28,6 @@
 #include <cstring>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Size>
diff --git a/libcxx/include/__functional/identity.h b/libcxx/include/__functional/identity.h
--- a/libcxx/include/__functional/identity.h
+++ b/libcxx/include/__functional/identity.h
@@ -14,10 +14,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__functional/invoke.h b/libcxx/include/__functional/invoke.h
--- a/libcxx/include/__functional/invoke.h
+++ b/libcxx/include/__functional/invoke.h
@@ -14,10 +14,6 @@
 #include <__type_traits/invoke.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__functional/is_transparent.h b/libcxx/include/__functional/is_transparent.h
--- a/libcxx/include/__functional/is_transparent.h
+++ b/libcxx/include/__functional/is_transparent.h
@@ -14,10 +14,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/void_t.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 14
diff --git a/libcxx/include/__functional/mem_fn.h b/libcxx/include/__functional/mem_fn.h
--- a/libcxx/include/__functional/mem_fn.h
+++ b/libcxx/include/__functional/mem_fn.h
@@ -16,10 +16,6 @@
 #include <__functional/weak_result_type.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__functional/mem_fun_ref.h b/libcxx/include/__functional/mem_fun_ref.h
--- a/libcxx/include/__functional/mem_fun_ref.h
+++ b/libcxx/include/__functional/mem_fun_ref.h
@@ -14,10 +14,6 @@
 #include <__functional/binary_function.h>
 #include <__functional/unary_function.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)
diff --git a/libcxx/include/__functional/not_fn.h b/libcxx/include/__functional/not_fn.h
--- a/libcxx/include/__functional/not_fn.h
+++ b/libcxx/include/__functional/not_fn.h
@@ -19,10 +19,6 @@
 #include <__type_traits/is_move_constructible.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__functional/operations.h b/libcxx/include/__functional/operations.h
--- a/libcxx/include/__functional/operations.h
+++ b/libcxx/include/__functional/operations.h
@@ -18,10 +18,6 @@
 #include <__type_traits/predicate_traits.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Arithmetic operations
diff --git a/libcxx/include/__functional/perfect_forward.h b/libcxx/include/__functional/perfect_forward.h
--- a/libcxx/include/__functional/perfect_forward.h
+++ b/libcxx/include/__functional/perfect_forward.h
@@ -16,10 +16,6 @@
 #include <__utility/move.h>
 #include <tuple>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__functional/pointer_to_binary_function.h b/libcxx/include/__functional/pointer_to_binary_function.h
--- a/libcxx/include/__functional/pointer_to_binary_function.h
+++ b/libcxx/include/__functional/pointer_to_binary_function.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__functional/binary_function.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)
diff --git a/libcxx/include/__functional/pointer_to_unary_function.h b/libcxx/include/__functional/pointer_to_unary_function.h
--- a/libcxx/include/__functional/pointer_to_unary_function.h
+++ b/libcxx/include/__functional/pointer_to_unary_function.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__functional/unary_function.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)
diff --git a/libcxx/include/__functional/ranges_operations.h b/libcxx/include/__functional/ranges_operations.h
--- a/libcxx/include/__functional/ranges_operations.h
+++ b/libcxx/include/__functional/ranges_operations.h
@@ -17,10 +17,6 @@
 #include <__type_traits/predicate_traits.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__functional/reference_wrapper.h b/libcxx/include/__functional/reference_wrapper.h
--- a/libcxx/include/__functional/reference_wrapper.h
+++ b/libcxx/include/__functional/reference_wrapper.h
@@ -19,10 +19,6 @@
 #include <__utility/declval.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__functional/unary_function.h b/libcxx/include/__functional/unary_function.h
--- a/libcxx/include/__functional/unary_function.h
+++ b/libcxx/include/__functional/unary_function.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION)
diff --git a/libcxx/include/__functional/unary_negate.h b/libcxx/include/__functional/unary_negate.h
--- a/libcxx/include/__functional/unary_negate.h
+++ b/libcxx/include/__functional/unary_negate.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__functional/unary_function.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS)
diff --git a/libcxx/include/__functional/weak_result_type.h b/libcxx/include/__functional/weak_result_type.h
--- a/libcxx/include/__functional/weak_result_type.h
+++ b/libcxx/include/__functional/weak_result_type.h
@@ -18,10 +18,6 @@
 #include <__type_traits/is_same.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__fwd/array.h b/libcxx/include/__fwd/array.h
--- a/libcxx/include/__fwd/array.h
+++ b/libcxx/include/__fwd/array.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, size_t _Size>
diff --git a/libcxx/include/__fwd/fstream.h b/libcxx/include/__fwd/fstream.h
--- a/libcxx/include/__fwd/fstream.h
+++ b/libcxx/include/__fwd/fstream.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__fwd/string.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _CharT, class _Traits = char_traits<_CharT> >
diff --git a/libcxx/include/__fwd/get.h b/libcxx/include/__fwd/get.h
--- a/libcxx/include/__fwd/get.h
+++ b/libcxx/include/__fwd/get.h
@@ -18,10 +18,6 @@
 #include <__tuple/tuple_element.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/__fwd/hash.h b/libcxx/include/__fwd/hash.h
--- a/libcxx/include/__fwd/hash.h
+++ b/libcxx/include/__fwd/hash.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class>
diff --git a/libcxx/include/__fwd/ios.h b/libcxx/include/__fwd/ios.h
--- a/libcxx/include/__fwd/ios.h
+++ b/libcxx/include/__fwd/ios.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__fwd/string.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _CharT, class _Traits = char_traits<_CharT> >
diff --git a/libcxx/include/__fwd/istream.h b/libcxx/include/__fwd/istream.h
--- a/libcxx/include/__fwd/istream.h
+++ b/libcxx/include/__fwd/istream.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__fwd/string.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _CharT, class _Traits = char_traits<_CharT> >
diff --git a/libcxx/include/__fwd/memory_resource.h b/libcxx/include/__fwd/memory_resource.h
--- a/libcxx/include/__fwd/memory_resource.h
+++ b/libcxx/include/__fwd/memory_resource.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 namespace pmr {
diff --git a/libcxx/include/__fwd/ostream.h b/libcxx/include/__fwd/ostream.h
--- a/libcxx/include/__fwd/ostream.h
+++ b/libcxx/include/__fwd/ostream.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__fwd/string.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _CharT, class _Traits = char_traits<_CharT> >
diff --git a/libcxx/include/__fwd/pair.h b/libcxx/include/__fwd/pair.h
--- a/libcxx/include/__fwd/pair.h
+++ b/libcxx/include/__fwd/pair.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class, class>
diff --git a/libcxx/include/__fwd/span.h b/libcxx/include/__fwd/span.h
--- a/libcxx/include/__fwd/span.h
+++ b/libcxx/include/__fwd/span.h
@@ -14,10 +14,6 @@
 #include <cstddef>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__fwd/sstream.h b/libcxx/include/__fwd/sstream.h
--- a/libcxx/include/__fwd/sstream.h
+++ b/libcxx/include/__fwd/sstream.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__fwd/string.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _CharT, class _Traits = char_traits<_CharT>, class _Allocator = allocator<_CharT> >
diff --git a/libcxx/include/__fwd/streambuf.h b/libcxx/include/__fwd/streambuf.h
--- a/libcxx/include/__fwd/streambuf.h
+++ b/libcxx/include/__fwd/streambuf.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__fwd/string.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _CharT, class _Traits = char_traits<_CharT> >
diff --git a/libcxx/include/__fwd/string.h b/libcxx/include/__fwd/string.h
--- a/libcxx/include/__fwd/string.h
+++ b/libcxx/include/__fwd/string.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__fwd/memory_resource.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _CharT>
diff --git a/libcxx/include/__fwd/string_view.h b/libcxx/include/__fwd/string_view.h
--- a/libcxx/include/__fwd/string_view.h
+++ b/libcxx/include/__fwd/string_view.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <iosfwd> // char_traits
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template<class _CharT, class _Traits = char_traits<_CharT> >
diff --git a/libcxx/include/__fwd/subrange.h b/libcxx/include/__fwd/subrange.h
--- a/libcxx/include/__fwd/subrange.h
+++ b/libcxx/include/__fwd/subrange.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 #include <__iterator/concepts.h>
diff --git a/libcxx/include/__fwd/tuple.h b/libcxx/include/__fwd/tuple.h
--- a/libcxx/include/__fwd/tuple.h
+++ b/libcxx/include/__fwd/tuple.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/__hash_table b/libcxx/include/__hash_table
--- a/libcxx/include/__hash_table
+++ b/libcxx/include/__hash_table
@@ -47,10 +47,6 @@
 #include <cstring>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__ios/fpos.h b/libcxx/include/__ios/fpos.h
--- a/libcxx/include/__ios/fpos.h
+++ b/libcxx/include/__ios/fpos.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <iosfwd>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _StateT>
diff --git a/libcxx/include/__iterator/access.h b/libcxx/include/__iterator/access.h
--- a/libcxx/include/__iterator/access.h
+++ b/libcxx/include/__iterator/access.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, size_t _Np>
diff --git a/libcxx/include/__iterator/advance.h b/libcxx/include/__iterator/advance.h
--- a/libcxx/include/__iterator/advance.h
+++ b/libcxx/include/__iterator/advance.h
@@ -25,10 +25,6 @@
 #include <__utility/unreachable.h>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIter>
diff --git a/libcxx/include/__iterator/back_insert_iterator.h b/libcxx/include/__iterator/back_insert_iterator.h
--- a/libcxx/include/__iterator/back_insert_iterator.h
+++ b/libcxx/include/__iterator/back_insert_iterator.h
@@ -17,10 +17,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
diff --git a/libcxx/include/__iterator/bounded_iter.h b/libcxx/include/__iterator/bounded_iter.h
--- a/libcxx/include/__iterator/bounded_iter.h
+++ b/libcxx/include/__iterator/bounded_iter.h
@@ -19,10 +19,6 @@
 #include <__type_traits/is_convertible.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Iterator wrapper that carries the valid range it is allowed to access.
diff --git a/libcxx/include/__iterator/common_iterator.h b/libcxx/include/__iterator/common_iterator.h
--- a/libcxx/include/__iterator/common_iterator.h
+++ b/libcxx/include/__iterator/common_iterator.h
@@ -30,10 +30,6 @@
 #include <__utility/declval.h>
 #include <variant>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/concepts.h b/libcxx/include/__iterator/concepts.h
--- a/libcxx/include/__iterator/concepts.h
+++ b/libcxx/include/__iterator/concepts.h
@@ -40,10 +40,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/counted_iterator.h b/libcxx/include/__iterator/counted_iterator.h
--- a/libcxx/include/__iterator/counted_iterator.h
+++ b/libcxx/include/__iterator/counted_iterator.h
@@ -30,10 +30,6 @@
 #include <__utility/move.h>
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/cpp17_iterator_concepts.h b/libcxx/include/__iterator/cpp17_iterator_concepts.h
--- a/libcxx/include/__iterator/cpp17_iterator_concepts.h
+++ b/libcxx/include/__iterator/cpp17_iterator_concepts.h
@@ -25,10 +25,6 @@
 #include <__utility/move.h>
 #include <__utility/swap.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__iterator/data.h b/libcxx/include/__iterator/data.h
--- a/libcxx/include/__iterator/data.h
+++ b/libcxx/include/__iterator/data.h
@@ -14,10 +14,6 @@
 #include <cstddef>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__iterator/default_sentinel.h b/libcxx/include/__iterator/default_sentinel.h
--- a/libcxx/include/__iterator/default_sentinel.h
+++ b/libcxx/include/__iterator/default_sentinel.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/distance.h b/libcxx/include/__iterator/distance.h
--- a/libcxx/include/__iterator/distance.h
+++ b/libcxx/include/__iterator/distance.h
@@ -20,10 +20,6 @@
 #include <__type_traits/decay.h>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIter>
diff --git a/libcxx/include/__iterator/empty.h b/libcxx/include/__iterator/empty.h
--- a/libcxx/include/__iterator/empty.h
+++ b/libcxx/include/__iterator/empty.h
@@ -14,10 +14,6 @@
 #include <cstddef>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__iterator/erase_if_container.h b/libcxx/include/__iterator/erase_if_container.h
--- a/libcxx/include/__iterator/erase_if_container.h
+++ b/libcxx/include/__iterator/erase_if_container.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Container, class _Predicate>
diff --git a/libcxx/include/__iterator/front_insert_iterator.h b/libcxx/include/__iterator/front_insert_iterator.h
--- a/libcxx/include/__iterator/front_insert_iterator.h
+++ b/libcxx/include/__iterator/front_insert_iterator.h
@@ -17,10 +17,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
diff --git a/libcxx/include/__iterator/incrementable_traits.h b/libcxx/include/__iterator/incrementable_traits.h
--- a/libcxx/include/__iterator/incrementable_traits.h
+++ b/libcxx/include/__iterator/incrementable_traits.h
@@ -20,10 +20,6 @@
 #include <__utility/declval.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/indirectly_comparable.h b/libcxx/include/__iterator/indirectly_comparable.h
--- a/libcxx/include/__iterator/indirectly_comparable.h
+++ b/libcxx/include/__iterator/indirectly_comparable.h
@@ -15,10 +15,6 @@
 #include <__iterator/concepts.h>
 #include <__iterator/projected.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/insert_iterator.h b/libcxx/include/__iterator/insert_iterator.h
--- a/libcxx/include/__iterator/insert_iterator.h
+++ b/libcxx/include/__iterator/insert_iterator.h
@@ -18,10 +18,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/istream_iterator.h b/libcxx/include/__iterator/istream_iterator.h
--- a/libcxx/include/__iterator/istream_iterator.h
+++ b/libcxx/include/__iterator/istream_iterator.h
@@ -18,10 +18,6 @@
 #include <cstddef>
 #include <iosfwd> // for forward declarations of char_traits and basic_istream
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
diff --git a/libcxx/include/__iterator/istreambuf_iterator.h b/libcxx/include/__iterator/istreambuf_iterator.h
--- a/libcxx/include/__iterator/istreambuf_iterator.h
+++ b/libcxx/include/__iterator/istreambuf_iterator.h
@@ -16,10 +16,6 @@
 #include <__iterator/iterator_traits.h>
 #include <iosfwd> // for forward declaration of basic_streambuf
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
diff --git a/libcxx/include/__iterator/iter_move.h b/libcxx/include/__iterator/iter_move.h
--- a/libcxx/include/__iterator/iter_move.h
+++ b/libcxx/include/__iterator/iter_move.h
@@ -19,10 +19,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/iter_swap.h b/libcxx/include/__iterator/iter_swap.h
--- a/libcxx/include/__iterator/iter_swap.h
+++ b/libcxx/include/__iterator/iter_swap.h
@@ -22,10 +22,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/iterator.h b/libcxx/include/__iterator/iterator.h
--- a/libcxx/include/__iterator/iterator.h
+++ b/libcxx/include/__iterator/iterator.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template<class _Category, class _Tp, class _Distance = ptrdiff_t,
diff --git a/libcxx/include/__iterator/iterator_traits.h b/libcxx/include/__iterator/iterator_traits.h
--- a/libcxx/include/__iterator/iterator_traits.h
+++ b/libcxx/include/__iterator/iterator_traits.h
@@ -37,10 +37,6 @@
 #include <__utility/declval.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/iterator_with_data.h b/libcxx/include/__iterator/iterator_with_data.h
--- a/libcxx/include/__iterator/iterator_with_data.h
+++ b/libcxx/include/__iterator/iterator_with_data.h
@@ -20,10 +20,6 @@
 #include <__iterator/readable_traits.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__iterator/mergeable.h b/libcxx/include/__iterator/mergeable.h
--- a/libcxx/include/__iterator/mergeable.h
+++ b/libcxx/include/__iterator/mergeable.h
@@ -16,10 +16,6 @@
 #include <__iterator/concepts.h>
 #include <__iterator/projected.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/move_iterator.h b/libcxx/include/__iterator/move_iterator.h
--- a/libcxx/include/__iterator/move_iterator.h
+++ b/libcxx/include/__iterator/move_iterator.h
@@ -35,10 +35,6 @@
 #include <__utility/declval.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/move_sentinel.h b/libcxx/include/__iterator/move_sentinel.h
--- a/libcxx/include/__iterator/move_sentinel.h
+++ b/libcxx/include/__iterator/move_sentinel.h
@@ -15,10 +15,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/next.h b/libcxx/include/__iterator/next.h
--- a/libcxx/include/__iterator/next.h
+++ b/libcxx/include/__iterator/next.h
@@ -18,10 +18,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__type_traits/enable_if.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIter>
diff --git a/libcxx/include/__iterator/ostream_iterator.h b/libcxx/include/__iterator/ostream_iterator.h
--- a/libcxx/include/__iterator/ostream_iterator.h
+++ b/libcxx/include/__iterator/ostream_iterator.h
@@ -17,10 +17,6 @@
 #include <cstddef>
 #include <iosfwd> // for forward declarations of char_traits and basic_ostream
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
diff --git a/libcxx/include/__iterator/ostreambuf_iterator.h b/libcxx/include/__iterator/ostreambuf_iterator.h
--- a/libcxx/include/__iterator/ostreambuf_iterator.h
+++ b/libcxx/include/__iterator/ostreambuf_iterator.h
@@ -16,10 +16,6 @@
 #include <cstddef>
 #include <iosfwd> // for forward declaration of basic_streambuf
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
diff --git a/libcxx/include/__iterator/permutable.h b/libcxx/include/__iterator/permutable.h
--- a/libcxx/include/__iterator/permutable.h
+++ b/libcxx/include/__iterator/permutable.h
@@ -14,10 +14,6 @@
 #include <__iterator/concepts.h>
 #include <__iterator/iter_swap.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/prev.h b/libcxx/include/__iterator/prev.h
--- a/libcxx/include/__iterator/prev.h
+++ b/libcxx/include/__iterator/prev.h
@@ -18,10 +18,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__type_traits/enable_if.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIter>
diff --git a/libcxx/include/__iterator/projected.h b/libcxx/include/__iterator/projected.h
--- a/libcxx/include/__iterator/projected.h
+++ b/libcxx/include/__iterator/projected.h
@@ -15,10 +15,6 @@
 #include <__iterator/incrementable_traits.h>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/readable_traits.h b/libcxx/include/__iterator/readable_traits.h
--- a/libcxx/include/__iterator/readable_traits.h
+++ b/libcxx/include/__iterator/readable_traits.h
@@ -20,10 +20,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <__type_traits/remove_extent.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/reverse_access.h b/libcxx/include/__iterator/reverse_access.h
--- a/libcxx/include/__iterator/reverse_access.h
+++ b/libcxx/include/__iterator/reverse_access.h
@@ -15,10 +15,6 @@
 #include <cstddef>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 14
diff --git a/libcxx/include/__iterator/reverse_iterator.h b/libcxx/include/__iterator/reverse_iterator.h
--- a/libcxx/include/__iterator/reverse_iterator.h
+++ b/libcxx/include/__iterator/reverse_iterator.h
@@ -40,10 +40,6 @@
 #include <__utility/declval.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
diff --git a/libcxx/include/__iterator/segmented_iterator.h b/libcxx/include/__iterator/segmented_iterator.h
--- a/libcxx/include/__iterator/segmented_iterator.h
+++ b/libcxx/include/__iterator/segmented_iterator.h
@@ -44,10 +44,6 @@
 #include <__type_traits/integral_constant.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Iterator>
diff --git a/libcxx/include/__iterator/size.h b/libcxx/include/__iterator/size.h
--- a/libcxx/include/__iterator/size.h
+++ b/libcxx/include/__iterator/size.h
@@ -15,10 +15,6 @@
 #include <__type_traits/make_signed.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__iterator/sortable.h b/libcxx/include/__iterator/sortable.h
--- a/libcxx/include/__iterator/sortable.h
+++ b/libcxx/include/__iterator/sortable.h
@@ -17,10 +17,6 @@
 #include <__iterator/permutable.h>
 #include <__iterator/projected.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/unreachable_sentinel.h b/libcxx/include/__iterator/unreachable_sentinel.h
--- a/libcxx/include/__iterator/unreachable_sentinel.h
+++ b/libcxx/include/__iterator/unreachable_sentinel.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__iterator/concepts.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__iterator/wrap_iter.h b/libcxx/include/__iterator/wrap_iter.h
--- a/libcxx/include/__iterator/wrap_iter.h
+++ b/libcxx/include/__iterator/wrap_iter.h
@@ -18,10 +18,6 @@
 #include <__type_traits/enable_if.h>
 #include <__type_traits/is_convertible.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Iter>
diff --git a/libcxx/include/__locale b/libcxx/include/__locale
--- a/libcxx/include/__locale
+++ b/libcxx/include/__locale
@@ -51,10 +51,6 @@
 # include <__support/musl/xlocale.h>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 class _LIBCPP_EXPORTED_FROM_ABI locale;
diff --git a/libcxx/include/__locale_dir/locale_base_api/bsd_locale_defaults.h b/libcxx/include/__locale_dir/locale_base_api/bsd_locale_defaults.h
--- a/libcxx/include/__locale_dir/locale_base_api/bsd_locale_defaults.h
+++ b/libcxx/include/__locale_dir/locale_base_api/bsd_locale_defaults.h
@@ -14,10 +14,6 @@
 #ifndef _LIBCPP___LOCALE_LOCALE_BASE_API_BSD_LOCALE_DEFAULTS_H
 #define _LIBCPP___LOCALE_LOCALE_BASE_API_BSD_LOCALE_DEFAULTS_H
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #define __libcpp_mb_cur_max_l(loc)                          MB_CUR_MAX_L(loc)
 #define __libcpp_btowc_l(ch, loc)                           btowc_l(ch, loc)
 #define __libcpp_wctob_l(wch, loc)                          wctob_l(wch, loc)
diff --git a/libcxx/include/__locale_dir/locale_base_api/bsd_locale_fallbacks.h b/libcxx/include/__locale_dir/locale_base_api/bsd_locale_fallbacks.h
--- a/libcxx/include/__locale_dir/locale_base_api/bsd_locale_fallbacks.h
+++ b/libcxx/include/__locale_dir/locale_base_api/bsd_locale_fallbacks.h
@@ -22,10 +22,6 @@
 #  include <cwchar>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 inline _LIBCPP_INLINE_VISIBILITY
diff --git a/libcxx/include/__locale_dir/locale_base_api/locale_guard.h b/libcxx/include/__locale_dir/locale_base_api/locale_guard.h
--- a/libcxx/include/__locale_dir/locale_base_api/locale_guard.h
+++ b/libcxx/include/__locale_dir/locale_base_api/locale_guard.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <clocale>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if !defined(_LIBCPP_LOCALE__L_EXTENSIONS)
diff --git a/libcxx/include/__mbstate_t.h b/libcxx/include/__mbstate_t.h
--- a/libcxx/include/__mbstate_t.h
+++ b/libcxx/include/__mbstate_t.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 // The goal of this header is to provide mbstate_t without requiring all of
 // <uchar.h> or <wchar.h>. It's also used by the libc++ versions of <uchar.h>
 // and <wchar.h> to get mbstate_t when the C library doesn't provide <uchar.h>
diff --git a/libcxx/include/__mdspan/extents.h b/libcxx/include/__mdspan/extents.h
--- a/libcxx/include/__mdspan/extents.h
+++ b/libcxx/include/__mdspan/extents.h
@@ -33,10 +33,6 @@
 #include <limits>
 #include <span>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__memory/addressof.h b/libcxx/include/__memory/addressof.h
--- a/libcxx/include/__memory/addressof.h
+++ b/libcxx/include/__memory/addressof.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__memory/align.h b/libcxx/include/__memory/align.h
--- a/libcxx/include/__memory/align.h
+++ b/libcxx/include/__memory/align.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 _LIBCPP_EXPORTED_FROM_ABI void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space);
diff --git a/libcxx/include/__memory/aligned_alloc.h b/libcxx/include/__memory/aligned_alloc.h
--- a/libcxx/include/__memory/aligned_alloc.h
+++ b/libcxx/include/__memory/aligned_alloc.h
@@ -13,10 +13,6 @@
 #include <cstddef>
 #include <cstdlib>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #ifndef _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION
diff --git a/libcxx/include/__memory/allocate_at_least.h b/libcxx/include/__memory/allocate_at_least.h
--- a/libcxx/include/__memory/allocate_at_least.h
+++ b/libcxx/include/__memory/allocate_at_least.h
@@ -13,10 +13,6 @@
 #include <__memory/allocator_traits.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 23
diff --git a/libcxx/include/__memory/allocation_guard.h b/libcxx/include/__memory/allocation_guard.h
--- a/libcxx/include/__memory/allocation_guard.h
+++ b/libcxx/include/__memory/allocation_guard.h
@@ -15,10 +15,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Helper class to allocate memory using an Allocator in an exception safe
diff --git a/libcxx/include/__memory/allocator.h b/libcxx/include/__memory/allocator.h
--- a/libcxx/include/__memory/allocator.h
+++ b/libcxx/include/__memory/allocator.h
@@ -22,10 +22,6 @@
 #include <cstddef>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp> class allocator;
diff --git a/libcxx/include/__memory/allocator_arg_t.h b/libcxx/include/__memory/allocator_arg_t.h
--- a/libcxx/include/__memory/allocator_arg_t.h
+++ b/libcxx/include/__memory/allocator_arg_t.h
@@ -17,10 +17,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 struct _LIBCPP_TEMPLATE_VIS allocator_arg_t { explicit allocator_arg_t() = default; };
diff --git a/libcxx/include/__memory/allocator_destructor.h b/libcxx/include/__memory/allocator_destructor.h
--- a/libcxx/include/__memory/allocator_destructor.h
+++ b/libcxx/include/__memory/allocator_destructor.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__memory/allocator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Alloc>
diff --git a/libcxx/include/__memory/allocator_traits.h b/libcxx/include/__memory/allocator_traits.h
--- a/libcxx/include/__memory/allocator_traits.h
+++ b/libcxx/include/__memory/allocator_traits.h
@@ -24,10 +24,6 @@
 #include <__utility/forward.h>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__memory/assume_aligned.h b/libcxx/include/__memory/assume_aligned.h
--- a/libcxx/include/__memory/assume_aligned.h
+++ b/libcxx/include/__memory/assume_aligned.h
@@ -16,10 +16,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__memory/auto_ptr.h b/libcxx/include/__memory/auto_ptr.h
--- a/libcxx/include/__memory/auto_ptr.h
+++ b/libcxx/include/__memory/auto_ptr.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__memory/builtin_new_allocator.h b/libcxx/include/__memory/builtin_new_allocator.h
--- a/libcxx/include/__memory/builtin_new_allocator.h
+++ b/libcxx/include/__memory/builtin_new_allocator.h
@@ -14,10 +14,6 @@
 #include <cstddef>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // __builtin_new_allocator -- A non-templated helper for allocating and
diff --git a/libcxx/include/__memory/compressed_pair.h b/libcxx/include/__memory/compressed_pair.h
--- a/libcxx/include/__memory/compressed_pair.h
+++ b/libcxx/include/__memory/compressed_pair.h
@@ -27,10 +27,6 @@
 #include <__utility/piecewise_construct.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Tag used to default initialize one or both of the pair's elements.
diff --git a/libcxx/include/__memory/concepts.h b/libcxx/include/__memory/concepts.h
--- a/libcxx/include/__memory/concepts.h
+++ b/libcxx/include/__memory/concepts.h
@@ -20,10 +20,6 @@
 #include <__type_traits/is_reference.h>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__memory/construct_at.h b/libcxx/include/__memory/construct_at.h
--- a/libcxx/include/__memory/construct_at.h
+++ b/libcxx/include/__memory/construct_at.h
@@ -22,10 +22,6 @@
 #include <__utility/move.h>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // construct_at
diff --git a/libcxx/include/__memory/destruct_n.h b/libcxx/include/__memory/destruct_n.h
--- a/libcxx/include/__memory/destruct_n.h
+++ b/libcxx/include/__memory/destruct_n.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_trivially_destructible.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 struct __destruct_n
diff --git a/libcxx/include/__memory/pointer_traits.h b/libcxx/include/__memory/pointer_traits.h
--- a/libcxx/include/__memory/pointer_traits.h
+++ b/libcxx/include/__memory/pointer_traits.h
@@ -22,10 +22,6 @@
 #include <__utility/declval.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class = void>
diff --git a/libcxx/include/__memory/ranges_construct_at.h b/libcxx/include/__memory/ranges_construct_at.h
--- a/libcxx/include/__memory/ranges_construct_at.h
+++ b/libcxx/include/__memory/ranges_construct_at.h
@@ -24,10 +24,6 @@
 #include <__utility/move.h>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__memory/ranges_uninitialized_algorithms.h b/libcxx/include/__memory/ranges_uninitialized_algorithms.h
--- a/libcxx/include/__memory/ranges_uninitialized_algorithms.h
+++ b/libcxx/include/__memory/ranges_uninitialized_algorithms.h
@@ -27,10 +27,6 @@
 #include <__utility/move.h>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__memory/raw_storage_iterator.h b/libcxx/include/__memory/raw_storage_iterator.h
--- a/libcxx/include/__memory/raw_storage_iterator.h
+++ b/libcxx/include/__memory/raw_storage_iterator.h
@@ -18,10 +18,6 @@
 #include <cstddef>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR)
diff --git a/libcxx/include/__memory/shared_ptr.h b/libcxx/include/__memory/shared_ptr.h
--- a/libcxx/include/__memory/shared_ptr.h
+++ b/libcxx/include/__memory/shared_ptr.h
@@ -57,10 +57,6 @@
 #  include <__atomic/memory_order.h>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // NOTE: Relaxed and acq/rel atomics (for increment and decrement respectively)
diff --git a/libcxx/include/__memory/swap_allocator.h b/libcxx/include/__memory/swap_allocator.h
--- a/libcxx/include/__memory/swap_allocator.h
+++ b/libcxx/include/__memory/swap_allocator.h
@@ -15,10 +15,6 @@
 #include <__type_traits/is_swappable.h>
 #include <__utility/swap.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <typename _Alloc>
diff --git a/libcxx/include/__memory/temp_value.h b/libcxx/include/__memory/temp_value.h
--- a/libcxx/include/__memory/temp_value.h
+++ b/libcxx/include/__memory/temp_value.h
@@ -15,10 +15,6 @@
 #include <__type_traits/aligned_storage.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class _Alloc>
diff --git a/libcxx/include/__memory/temporary_buffer.h b/libcxx/include/__memory/temporary_buffer.h
--- a/libcxx/include/__memory/temporary_buffer.h
+++ b/libcxx/include/__memory/temporary_buffer.h
@@ -16,10 +16,6 @@
 #include <cstddef>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__memory/uninitialized_algorithms.h b/libcxx/include/__memory/uninitialized_algorithms.h
--- a/libcxx/include/__memory/uninitialized_algorithms.h
+++ b/libcxx/include/__memory/uninitialized_algorithms.h
@@ -38,10 +38,6 @@
 #include <__utility/pair.h>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // This is a simplified version of C++20 `unreachable_sentinel` that doesn't use concepts and thus can be used in any
diff --git a/libcxx/include/__memory/uninitialized_buffer.h b/libcxx/include/__memory/uninitialized_buffer.h
--- a/libcxx/include/__memory/uninitialized_buffer.h
+++ b/libcxx/include/__memory/uninitialized_buffer.h
@@ -19,10 +19,6 @@
 #include <cstddef>
 #include <new>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 // __make_uninitialized_buffer is a utility function to allocate some memory for scratch storage. The __destructor is
 // called before deleting the memory, making it possible to destroy any leftover elements. The __destructor is called
 // with the pointer to the first element and the total number of elements.
diff --git a/libcxx/include/__memory/unique_ptr.h b/libcxx/include/__memory/unique_ptr.h
--- a/libcxx/include/__memory/unique_ptr.h
+++ b/libcxx/include/__memory/unique_ptr.h
@@ -40,10 +40,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__memory/uses_allocator.h b/libcxx/include/__memory/uses_allocator.h
--- a/libcxx/include/__memory/uses_allocator.h
+++ b/libcxx/include/__memory/uses_allocator.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_convertible.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__memory/uses_allocator_construction.h b/libcxx/include/__memory/uses_allocator_construction.h
--- a/libcxx/include/__memory/uses_allocator_construction.h
+++ b/libcxx/include/__memory/uses_allocator_construction.h
@@ -19,10 +19,6 @@
 #include <__utility/pair.h>
 #include <tuple>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__memory/voidify.h b/libcxx/include/__memory/voidify.h
--- a/libcxx/include/__memory/voidify.h
+++ b/libcxx/include/__memory/voidify.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__memory/addressof.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <typename _Tp>
diff --git a/libcxx/include/__memory_resource/memory_resource.h b/libcxx/include/__memory_resource/memory_resource.h
--- a/libcxx/include/__memory_resource/memory_resource.h
+++ b/libcxx/include/__memory_resource/memory_resource.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__memory_resource/monotonic_buffer_resource.h b/libcxx/include/__memory_resource/monotonic_buffer_resource.h
--- a/libcxx/include/__memory_resource/monotonic_buffer_resource.h
+++ b/libcxx/include/__memory_resource/monotonic_buffer_resource.h
@@ -14,10 +14,6 @@
 #include <__memory_resource/memory_resource.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__memory_resource/polymorphic_allocator.h b/libcxx/include/__memory_resource/polymorphic_allocator.h
--- a/libcxx/include/__memory_resource/polymorphic_allocator.h
+++ b/libcxx/include/__memory_resource/polymorphic_allocator.h
@@ -19,10 +19,6 @@
 #include <stdexcept>
 #include <tuple>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__memory_resource/pool_options.h b/libcxx/include/__memory_resource/pool_options.h
--- a/libcxx/include/__memory_resource/pool_options.h
+++ b/libcxx/include/__memory_resource/pool_options.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__memory_resource/synchronized_pool_resource.h b/libcxx/include/__memory_resource/synchronized_pool_resource.h
--- a/libcxx/include/__memory_resource/synchronized_pool_resource.h
+++ b/libcxx/include/__memory_resource/synchronized_pool_resource.h
@@ -16,10 +16,6 @@
 #include <cstddef>
 #include <mutex>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__memory_resource/unsynchronized_pool_resource.h b/libcxx/include/__memory_resource/unsynchronized_pool_resource.h
--- a/libcxx/include/__memory_resource/unsynchronized_pool_resource.h
+++ b/libcxx/include/__memory_resource/unsynchronized_pool_resource.h
@@ -15,10 +15,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__mutex/lock_guard.h b/libcxx/include/__mutex/lock_guard.h
--- a/libcxx/include/__mutex/lock_guard.h
+++ b/libcxx/include/__mutex/lock_guard.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__mutex/tag_types.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_HAS_NO_THREADS
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__mutex/mutex.h b/libcxx/include/__mutex/mutex.h
--- a/libcxx/include/__mutex/mutex.h
+++ b/libcxx/include/__mutex/mutex.h
@@ -13,10 +13,6 @@
 #include <__threading_support>
 #include <__type_traits/is_nothrow_default_constructible.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_HAS_NO_THREADS
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__mutex/tag_types.h b/libcxx/include/__mutex/tag_types.h
--- a/libcxx/include/__mutex/tag_types.h
+++ b/libcxx/include/__mutex/tag_types.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_HAS_NO_THREADS
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__mutex/unique_lock.h b/libcxx/include/__mutex/unique_lock.h
--- a/libcxx/include/__mutex/unique_lock.h
+++ b/libcxx/include/__mutex/unique_lock.h
@@ -18,10 +18,6 @@
 #include <__utility/swap.h>
 #include <cerrno>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_HAS_NO_THREADS
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__node_handle b/libcxx/include/__node_handle
--- a/libcxx/include/__node_handle
+++ b/libcxx/include/__node_handle
@@ -64,10 +64,6 @@
 #include <__memory/pointer_traits.h>
 #include <optional>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__numeric/accumulate.h b/libcxx/include/__numeric/accumulate.h
--- a/libcxx/include/__numeric/accumulate.h
+++ b/libcxx/include/__numeric/accumulate.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _Tp>
diff --git a/libcxx/include/__numeric/adjacent_difference.h b/libcxx/include/__numeric/adjacent_difference.h
--- a/libcxx/include/__numeric/adjacent_difference.h
+++ b/libcxx/include/__numeric/adjacent_difference.h
@@ -14,10 +14,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _OutputIterator>
diff --git a/libcxx/include/__numeric/exclusive_scan.h b/libcxx/include/__numeric/exclusive_scan.h
--- a/libcxx/include/__numeric/exclusive_scan.h
+++ b/libcxx/include/__numeric/exclusive_scan.h
@@ -14,10 +14,6 @@
 #include <__functional/operations.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__numeric/gcd_lcm.h b/libcxx/include/__numeric/gcd_lcm.h
--- a/libcxx/include/__numeric/gcd_lcm.h
+++ b/libcxx/include/__numeric/gcd_lcm.h
@@ -19,10 +19,6 @@
 #include <__type_traits/make_unsigned.h>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__numeric/inclusive_scan.h b/libcxx/include/__numeric/inclusive_scan.h
--- a/libcxx/include/__numeric/inclusive_scan.h
+++ b/libcxx/include/__numeric/inclusive_scan.h
@@ -15,10 +15,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__numeric/inner_product.h b/libcxx/include/__numeric/inner_product.h
--- a/libcxx/include/__numeric/inner_product.h
+++ b/libcxx/include/__numeric/inner_product.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator1, class _InputIterator2, class _Tp>
diff --git a/libcxx/include/__numeric/iota.h b/libcxx/include/__numeric/iota.h
--- a/libcxx/include/__numeric/iota.h
+++ b/libcxx/include/__numeric/iota.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _ForwardIterator, class _Tp>
diff --git a/libcxx/include/__numeric/midpoint.h b/libcxx/include/__numeric/midpoint.h
--- a/libcxx/include/__numeric/midpoint.h
+++ b/libcxx/include/__numeric/midpoint.h
@@ -24,10 +24,6 @@
 #include <cstddef>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__numeric/partial_sum.h b/libcxx/include/__numeric/partial_sum.h
--- a/libcxx/include/__numeric/partial_sum.h
+++ b/libcxx/include/__numeric/partial_sum.h
@@ -14,10 +14,6 @@
 #include <__iterator/iterator_traits.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _InputIterator, class _OutputIterator>
diff --git a/libcxx/include/__numeric/pstl_reduce.h b/libcxx/include/__numeric/pstl_reduce.h
--- a/libcxx/include/__numeric/pstl_reduce.h
+++ b/libcxx/include/__numeric/pstl_reduce.h
@@ -16,10 +16,6 @@
 #include <__numeric/pstl_transform_reduce.h>
 #include <__type_traits/is_execution_policy.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__numeric/pstl_transform_reduce.h b/libcxx/include/__numeric/pstl_transform_reduce.h
--- a/libcxx/include/__numeric/pstl_transform_reduce.h
+++ b/libcxx/include/__numeric/pstl_transform_reduce.h
@@ -18,10 +18,6 @@
 #include <__utility/move.h>
 #include <__utility/terminate_on_exception.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__numeric/reduce.h b/libcxx/include/__numeric/reduce.h
--- a/libcxx/include/__numeric/reduce.h
+++ b/libcxx/include/__numeric/reduce.h
@@ -14,10 +14,6 @@
 #include <__functional/operations.h>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__numeric/transform_exclusive_scan.h b/libcxx/include/__numeric/transform_exclusive_scan.h
--- a/libcxx/include/__numeric/transform_exclusive_scan.h
+++ b/libcxx/include/__numeric/transform_exclusive_scan.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__numeric/transform_inclusive_scan.h b/libcxx/include/__numeric/transform_inclusive_scan.h
--- a/libcxx/include/__numeric/transform_inclusive_scan.h
+++ b/libcxx/include/__numeric/transform_inclusive_scan.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__numeric/transform_reduce.h b/libcxx/include/__numeric/transform_reduce.h
--- a/libcxx/include/__numeric/transform_reduce.h
+++ b/libcxx/include/__numeric/transform_reduce.h
@@ -14,10 +14,6 @@
 #include <__functional/operations.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__random/bernoulli_distribution.h b/libcxx/include/__random/bernoulli_distribution.h
--- a/libcxx/include/__random/bernoulli_distribution.h
+++ b/libcxx/include/__random/bernoulli_distribution.h
@@ -14,10 +14,6 @@
 #include <__random/uniform_real_distribution.h>
 #include <iosfwd>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/binomial_distribution.h b/libcxx/include/__random/binomial_distribution.h
--- a/libcxx/include/__random/binomial_distribution.h
+++ b/libcxx/include/__random/binomial_distribution.h
@@ -15,10 +15,6 @@
 #include <cmath>
 #include <iosfwd>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/cauchy_distribution.h b/libcxx/include/__random/cauchy_distribution.h
--- a/libcxx/include/__random/cauchy_distribution.h
+++ b/libcxx/include/__random/cauchy_distribution.h
@@ -16,10 +16,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/chi_squared_distribution.h b/libcxx/include/__random/chi_squared_distribution.h
--- a/libcxx/include/__random/chi_squared_distribution.h
+++ b/libcxx/include/__random/chi_squared_distribution.h
@@ -14,10 +14,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/clamp_to_integral.h b/libcxx/include/__random/clamp_to_integral.h
--- a/libcxx/include/__random/clamp_to_integral.h
+++ b/libcxx/include/__random/clamp_to_integral.h
@@ -13,10 +13,6 @@
 #include <cmath>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/default_random_engine.h b/libcxx/include/__random/default_random_engine.h
--- a/libcxx/include/__random/default_random_engine.h
+++ b/libcxx/include/__random/default_random_engine.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__random/linear_congruential_engine.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 typedef minstd_rand default_random_engine;
diff --git a/libcxx/include/__random/discard_block_engine.h b/libcxx/include/__random/discard_block_engine.h
--- a/libcxx/include/__random/discard_block_engine.h
+++ b/libcxx/include/__random/discard_block_engine.h
@@ -18,10 +18,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/discrete_distribution.h b/libcxx/include/__random/discrete_distribution.h
--- a/libcxx/include/__random/discrete_distribution.h
+++ b/libcxx/include/__random/discrete_distribution.h
@@ -18,10 +18,6 @@
 #include <numeric>
 #include <vector>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/exponential_distribution.h b/libcxx/include/__random/exponential_distribution.h
--- a/libcxx/include/__random/exponential_distribution.h
+++ b/libcxx/include/__random/exponential_distribution.h
@@ -17,10 +17,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/extreme_value_distribution.h b/libcxx/include/__random/extreme_value_distribution.h
--- a/libcxx/include/__random/extreme_value_distribution.h
+++ b/libcxx/include/__random/extreme_value_distribution.h
@@ -16,10 +16,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/fisher_f_distribution.h b/libcxx/include/__random/fisher_f_distribution.h
--- a/libcxx/include/__random/fisher_f_distribution.h
+++ b/libcxx/include/__random/fisher_f_distribution.h
@@ -15,10 +15,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/gamma_distribution.h b/libcxx/include/__random/gamma_distribution.h
--- a/libcxx/include/__random/gamma_distribution.h
+++ b/libcxx/include/__random/gamma_distribution.h
@@ -17,10 +17,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/generate_canonical.h b/libcxx/include/__random/generate_canonical.h
--- a/libcxx/include/__random/generate_canonical.h
+++ b/libcxx/include/__random/generate_canonical.h
@@ -15,10 +15,6 @@
 #include <initializer_list>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/geometric_distribution.h b/libcxx/include/__random/geometric_distribution.h
--- a/libcxx/include/__random/geometric_distribution.h
+++ b/libcxx/include/__random/geometric_distribution.h
@@ -15,10 +15,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/independent_bits_engine.h b/libcxx/include/__random/independent_bits_engine.h
--- a/libcxx/include/__random/independent_bits_engine.h
+++ b/libcxx/include/__random/independent_bits_engine.h
@@ -20,10 +20,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/is_seed_sequence.h b/libcxx/include/__random/is_seed_sequence.h
--- a/libcxx/include/__random/is_seed_sequence.h
+++ b/libcxx/include/__random/is_seed_sequence.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_same.h>
 #include <__type_traits/remove_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Sseq, class _Engine>
diff --git a/libcxx/include/__random/is_valid.h b/libcxx/include/__random/is_valid.h
--- a/libcxx/include/__random/is_valid.h
+++ b/libcxx/include/__random/is_valid.h
@@ -17,10 +17,6 @@
 #include <__utility/declval.h>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // [rand.req.genl]/1.5:
diff --git a/libcxx/include/__random/knuth_b.h b/libcxx/include/__random/knuth_b.h
--- a/libcxx/include/__random/knuth_b.h
+++ b/libcxx/include/__random/knuth_b.h
@@ -13,10 +13,6 @@
 #include <__random/linear_congruential_engine.h>
 #include <__random/shuffle_order_engine.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 typedef shuffle_order_engine<minstd_rand0, 256> knuth_b;
diff --git a/libcxx/include/__random/linear_congruential_engine.h b/libcxx/include/__random/linear_congruential_engine.h
--- a/libcxx/include/__random/linear_congruential_engine.h
+++ b/libcxx/include/__random/linear_congruential_engine.h
@@ -17,10 +17,6 @@
 #include <cstdint>
 #include <iosfwd>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/log2.h b/libcxx/include/__random/log2.h
--- a/libcxx/include/__random/log2.h
+++ b/libcxx/include/__random/log2.h
@@ -13,10 +13,6 @@
 #include <__type_traits/conditional.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _UIntType, _UIntType _Xp, size_t _Rp>
diff --git a/libcxx/include/__random/lognormal_distribution.h b/libcxx/include/__random/lognormal_distribution.h
--- a/libcxx/include/__random/lognormal_distribution.h
+++ b/libcxx/include/__random/lognormal_distribution.h
@@ -15,10 +15,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/mersenne_twister_engine.h b/libcxx/include/__random/mersenne_twister_engine.h
--- a/libcxx/include/__random/mersenne_twister_engine.h
+++ b/libcxx/include/__random/mersenne_twister_engine.h
@@ -18,10 +18,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/negative_binomial_distribution.h b/libcxx/include/__random/negative_binomial_distribution.h
--- a/libcxx/include/__random/negative_binomial_distribution.h
+++ b/libcxx/include/__random/negative_binomial_distribution.h
@@ -17,10 +17,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/normal_distribution.h b/libcxx/include/__random/normal_distribution.h
--- a/libcxx/include/__random/normal_distribution.h
+++ b/libcxx/include/__random/normal_distribution.h
@@ -16,10 +16,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/piecewise_constant_distribution.h b/libcxx/include/__random/piecewise_constant_distribution.h
--- a/libcxx/include/__random/piecewise_constant_distribution.h
+++ b/libcxx/include/__random/piecewise_constant_distribution.h
@@ -17,10 +17,6 @@
 #include <numeric>
 #include <vector>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/piecewise_linear_distribution.h b/libcxx/include/__random/piecewise_linear_distribution.h
--- a/libcxx/include/__random/piecewise_linear_distribution.h
+++ b/libcxx/include/__random/piecewise_linear_distribution.h
@@ -17,10 +17,6 @@
 #include <numeric>
 #include <vector>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/poisson_distribution.h b/libcxx/include/__random/poisson_distribution.h
--- a/libcxx/include/__random/poisson_distribution.h
+++ b/libcxx/include/__random/poisson_distribution.h
@@ -19,10 +19,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/random_device.h b/libcxx/include/__random/random_device.h
--- a/libcxx/include/__random/random_device.h
+++ b/libcxx/include/__random/random_device.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <string>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/ranlux.h b/libcxx/include/__random/ranlux.h
--- a/libcxx/include/__random/ranlux.h
+++ b/libcxx/include/__random/ranlux.h
@@ -14,10 +14,6 @@
 #include <__random/subtract_with_carry_engine.h>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 typedef subtract_with_carry_engine<uint_fast32_t, 24, 10, 24> ranlux24_base;
diff --git a/libcxx/include/__random/seed_seq.h b/libcxx/include/__random/seed_seq.h
--- a/libcxx/include/__random/seed_seq.h
+++ b/libcxx/include/__random/seed_seq.h
@@ -18,10 +18,6 @@
 #include <initializer_list>
 #include <vector>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/shuffle_order_engine.h b/libcxx/include/__random/shuffle_order_engine.h
--- a/libcxx/include/__random/shuffle_order_engine.h
+++ b/libcxx/include/__random/shuffle_order_engine.h
@@ -20,10 +20,6 @@
 #include <cstdint>
 #include <iosfwd>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/student_t_distribution.h b/libcxx/include/__random/student_t_distribution.h
--- a/libcxx/include/__random/student_t_distribution.h
+++ b/libcxx/include/__random/student_t_distribution.h
@@ -17,10 +17,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/subtract_with_carry_engine.h b/libcxx/include/__random/subtract_with_carry_engine.h
--- a/libcxx/include/__random/subtract_with_carry_engine.h
+++ b/libcxx/include/__random/subtract_with_carry_engine.h
@@ -19,10 +19,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/uniform_int_distribution.h b/libcxx/include/__random/uniform_int_distribution.h
--- a/libcxx/include/__random/uniform_int_distribution.h
+++ b/libcxx/include/__random/uniform_int_distribution.h
@@ -20,10 +20,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/uniform_random_bit_generator.h b/libcxx/include/__random/uniform_random_bit_generator.h
--- a/libcxx/include/__random/uniform_random_bit_generator.h
+++ b/libcxx/include/__random/uniform_random_bit_generator.h
@@ -16,10 +16,6 @@
 #include <__functional/invoke.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/uniform_real_distribution.h b/libcxx/include/__random/uniform_real_distribution.h
--- a/libcxx/include/__random/uniform_real_distribution.h
+++ b/libcxx/include/__random/uniform_real_distribution.h
@@ -15,10 +15,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__random/weibull_distribution.h b/libcxx/include/__random/weibull_distribution.h
--- a/libcxx/include/__random/weibull_distribution.h
+++ b/libcxx/include/__random/weibull_distribution.h
@@ -15,10 +15,6 @@
 #include <iosfwd>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__ranges/access.h b/libcxx/include/__ranges/access.h
--- a/libcxx/include/__ranges/access.h
+++ b/libcxx/include/__ranges/access.h
@@ -23,10 +23,6 @@
 #include <__utility/declval.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/all.h b/libcxx/include/__ranges/all.h
--- a/libcxx/include/__ranges/all.h
+++ b/libcxx/include/__ranges/all.h
@@ -23,10 +23,6 @@
 #include <__utility/declval.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/as_rvalue_view.h b/libcxx/include/__ranges/as_rvalue_view.h
--- a/libcxx/include/__ranges/as_rvalue_view.h
+++ b/libcxx/include/__ranges/as_rvalue_view.h
@@ -24,10 +24,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 23
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__ranges/common_view.h b/libcxx/include/__ranges/common_view.h
--- a/libcxx/include/__ranges/common_view.h
+++ b/libcxx/include/__ranges/common_view.h
@@ -25,10 +25,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/concepts.h b/libcxx/include/__ranges/concepts.h
--- a/libcxx/include/__ranges/concepts.h
+++ b/libcxx/include/__ranges/concepts.h
@@ -31,10 +31,6 @@
 #include <__utility/declval.h>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/container_compatible_range.h b/libcxx/include/__ranges/container_compatible_range.h
--- a/libcxx/include/__ranges/container_compatible_range.h
+++ b/libcxx/include/__ranges/container_compatible_range.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <__ranges/concepts.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 23
diff --git a/libcxx/include/__ranges/copyable_box.h b/libcxx/include/__ranges/copyable_box.h
--- a/libcxx/include/__ranges/copyable_box.h
+++ b/libcxx/include/__ranges/copyable_box.h
@@ -22,10 +22,6 @@
 #include <__utility/move.h>
 #include <optional>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/counted.h b/libcxx/include/__ranges/counted.h
--- a/libcxx/include/__ranges/counted.h
+++ b/libcxx/include/__ranges/counted.h
@@ -25,10 +25,6 @@
 #include <cstddef>
 #include <span>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/dangling.h b/libcxx/include/__ranges/dangling.h
--- a/libcxx/include/__ranges/dangling.h
+++ b/libcxx/include/__ranges/dangling.h
@@ -15,10 +15,6 @@
 #include <__ranges/concepts.h>
 #include <__type_traits/conditional.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/data.h b/libcxx/include/__ranges/data.h
--- a/libcxx/include/__ranges/data.h
+++ b/libcxx/include/__ranges/data.h
@@ -24,10 +24,6 @@
 #include <__type_traits/remove_reference.h>
 #include <__utility/auto_cast.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/drop_view.h b/libcxx/include/__ranges/drop_view.h
--- a/libcxx/include/__ranges/drop_view.h
+++ b/libcxx/include/__ranges/drop_view.h
@@ -43,10 +43,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__ranges/drop_while_view.h b/libcxx/include/__ranges/drop_while_view.h
--- a/libcxx/include/__ranges/drop_while_view.h
+++ b/libcxx/include/__ranges/drop_while_view.h
@@ -33,10 +33,6 @@
 #include <__utility/in_place.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/elements_view.h b/libcxx/include/__ranges/elements_view.h
--- a/libcxx/include/__ranges/elements_view.h
+++ b/libcxx/include/__ranges/elements_view.h
@@ -39,10 +39,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/empty.h b/libcxx/include/__ranges/empty.h
--- a/libcxx/include/__ranges/empty.h
+++ b/libcxx/include/__ranges/empty.h
@@ -16,10 +16,6 @@
 #include <__ranges/access.h>
 #include <__ranges/size.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/empty_view.h b/libcxx/include/__ranges/empty_view.h
--- a/libcxx/include/__ranges/empty_view.h
+++ b/libcxx/include/__ranges/empty_view.h
@@ -16,10 +16,6 @@
 #include <__type_traits/is_object.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/enable_borrowed_range.h b/libcxx/include/__ranges/enable_borrowed_range.h
--- a/libcxx/include/__ranges/enable_borrowed_range.h
+++ b/libcxx/include/__ranges/enable_borrowed_range.h
@@ -16,10 +16,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/enable_view.h b/libcxx/include/__ranges/enable_view.h
--- a/libcxx/include/__ranges/enable_view.h
+++ b/libcxx/include/__ranges/enable_view.h
@@ -17,10 +17,6 @@
 #include <__type_traits/is_convertible.h>
 #include <__type_traits/remove_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/filter_view.h b/libcxx/include/__ranges/filter_view.h
--- a/libcxx/include/__ranges/filter_view.h
+++ b/libcxx/include/__ranges/filter_view.h
@@ -40,10 +40,6 @@
 #include <__utility/in_place.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/from_range.h b/libcxx/include/__ranges/from_range.h
--- a/libcxx/include/__ranges/from_range.h
+++ b/libcxx/include/__ranges/from_range.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 23
diff --git a/libcxx/include/__ranges/iota_view.h b/libcxx/include/__ranges/iota_view.h
--- a/libcxx/include/__ranges/iota_view.h
+++ b/libcxx/include/__ranges/iota_view.h
@@ -37,10 +37,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/istream_view.h b/libcxx/include/__ranges/istream_view.h
--- a/libcxx/include/__ranges/istream_view.h
+++ b/libcxx/include/__ranges/istream_view.h
@@ -23,10 +23,6 @@
 #include <cstddef>
 #include <iosfwd>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__ranges/join_view.h b/libcxx/include/__ranges/join_view.h
--- a/libcxx/include/__ranges/join_view.h
+++ b/libcxx/include/__ranges/join_view.h
@@ -35,10 +35,6 @@
 #include <__utility/forward.h>
 #include <optional>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Note: `join_view` is still marked experimental because there is an ABI-breaking change that affects `join_view` in
diff --git a/libcxx/include/__ranges/lazy_split_view.h b/libcxx/include/__ranges/lazy_split_view.h
--- a/libcxx/include/__ranges/lazy_split_view.h
+++ b/libcxx/include/__ranges/lazy_split_view.h
@@ -43,10 +43,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/non_propagating_cache.h b/libcxx/include/__ranges/non_propagating_cache.h
--- a/libcxx/include/__ranges/non_propagating_cache.h
+++ b/libcxx/include/__ranges/non_propagating_cache.h
@@ -17,10 +17,6 @@
 #include <__utility/forward.h>
 #include <optional>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/owning_view.h b/libcxx/include/__ranges/owning_view.h
--- a/libcxx/include/__ranges/owning_view.h
+++ b/libcxx/include/__ranges/owning_view.h
@@ -23,10 +23,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/range_adaptor.h b/libcxx/include/__ranges/range_adaptor.h
--- a/libcxx/include/__ranges/range_adaptor.h
+++ b/libcxx/include/__ranges/range_adaptor.h
@@ -24,10 +24,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/rbegin.h b/libcxx/include/__ranges/rbegin.h
--- a/libcxx/include/__ranges/rbegin.h
+++ b/libcxx/include/__ranges/rbegin.h
@@ -23,10 +23,6 @@
 #include <__type_traits/remove_reference.h>
 #include <__utility/auto_cast.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/ref_view.h b/libcxx/include/__ranges/ref_view.h
--- a/libcxx/include/__ranges/ref_view.h
+++ b/libcxx/include/__ranges/ref_view.h
@@ -28,10 +28,6 @@
 #include <__utility/declval.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/rend.h b/libcxx/include/__ranges/rend.h
--- a/libcxx/include/__ranges/rend.h
+++ b/libcxx/include/__ranges/rend.h
@@ -24,10 +24,6 @@
 #include <__type_traits/remove_reference.h>
 #include <__utility/auto_cast.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/reverse_view.h b/libcxx/include/__ranges/reverse_view.h
--- a/libcxx/include/__ranges/reverse_view.h
+++ b/libcxx/include/__ranges/reverse_view.h
@@ -29,10 +29,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/single_view.h b/libcxx/include/__ranges/single_view.h
--- a/libcxx/include/__ranges/single_view.h
+++ b/libcxx/include/__ranges/single_view.h
@@ -22,10 +22,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/size.h b/libcxx/include/__ranges/size.h
--- a/libcxx/include/__ranges/size.h
+++ b/libcxx/include/__ranges/size.h
@@ -24,10 +24,6 @@
 #include <__utility/declval.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/split_view.h b/libcxx/include/__ranges/split_view.h
--- a/libcxx/include/__ranges/split_view.h
+++ b/libcxx/include/__ranges/split_view.h
@@ -32,10 +32,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/subrange.h b/libcxx/include/__ranges/subrange.h
--- a/libcxx/include/__ranges/subrange.h
+++ b/libcxx/include/__ranges/subrange.h
@@ -42,10 +42,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/take_view.h b/libcxx/include/__ranges/take_view.h
--- a/libcxx/include/__ranges/take_view.h
+++ b/libcxx/include/__ranges/take_view.h
@@ -43,10 +43,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__ranges/take_while_view.h b/libcxx/include/__ranges/take_while_view.h
--- a/libcxx/include/__ranges/take_while_view.h
+++ b/libcxx/include/__ranges/take_while_view.h
@@ -31,10 +31,6 @@
 #include <__utility/in_place.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/transform_view.h b/libcxx/include/__ranges/transform_view.h
--- a/libcxx/include/__ranges/transform_view.h
+++ b/libcxx/include/__ranges/transform_view.h
@@ -42,10 +42,6 @@
 #include <__utility/in_place.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/view_interface.h b/libcxx/include/__ranges/view_interface.h
--- a/libcxx/include/__ranges/view_interface.h
+++ b/libcxx/include/__ranges/view_interface.h
@@ -25,10 +25,6 @@
 #include <__type_traits/make_unsigned.h>
 #include <__type_traits/remove_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/views.h b/libcxx/include/__ranges/views.h
--- a/libcxx/include/__ranges/views.h
+++ b/libcxx/include/__ranges/views.h
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__ranges/zip_view.h b/libcxx/include/__ranges/zip_view.h
--- a/libcxx/include/__ranges/zip_view.h
+++ b/libcxx/include/__ranges/zip_view.h
@@ -38,10 +38,6 @@
 #include <__utility/move.h>
 #include <tuple>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__split_buffer b/libcxx/include/__split_buffer
--- a/libcxx/include/__split_buffer
+++ b/libcxx/include/__split_buffer
@@ -36,10 +36,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__std_mbstate_t.h b/libcxx/include/__std_mbstate_t.h
--- a/libcxx/include/__std_mbstate_t.h
+++ b/libcxx/include/__std_mbstate_t.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__mbstate_t.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 // The goal of this header is to provide std::mbstate_t without requiring all
 // of <cuchar> or <cwchar>.
 
diff --git a/libcxx/include/__stop_token/atomic_unique_lock.h b/libcxx/include/__stop_token/atomic_unique_lock.h
--- a/libcxx/include/__stop_token/atomic_unique_lock.h
+++ b/libcxx/include/__stop_token/atomic_unique_lock.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <atomic>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__stop_token/intrusive_list_view.h b/libcxx/include/__stop_token/intrusive_list_view.h
--- a/libcxx/include/__stop_token/intrusive_list_view.h
+++ b/libcxx/include/__stop_token/intrusive_list_view.h
@@ -13,10 +13,6 @@
 #include <__assert>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__stop_token/intrusive_shared_ptr.h b/libcxx/include/__stop_token/intrusive_shared_ptr.h
--- a/libcxx/include/__stop_token/intrusive_shared_ptr.h
+++ b/libcxx/include/__stop_token/intrusive_shared_ptr.h
@@ -17,10 +17,6 @@
 #include <__utility/swap.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__stop_token/stop_callback.h b/libcxx/include/__stop_token/stop_callback.h
--- a/libcxx/include/__stop_token/stop_callback.h
+++ b/libcxx/include/__stop_token/stop_callback.h
@@ -22,10 +22,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__stop_token/stop_source.h b/libcxx/include/__stop_token/stop_source.h
--- a/libcxx/include/__stop_token/stop_source.h
+++ b/libcxx/include/__stop_token/stop_source.h
@@ -17,10 +17,6 @@
 #include <__stop_token/stop_token.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__stop_token/stop_state.h b/libcxx/include/__stop_token/stop_state.h
--- a/libcxx/include/__stop_token/stop_state.h
+++ b/libcxx/include/__stop_token/stop_state.h
@@ -18,10 +18,6 @@
 #include <cstdint>
 #include <thread>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__stop_token/stop_token.h b/libcxx/include/__stop_token/stop_token.h
--- a/libcxx/include/__stop_token/stop_token.h
+++ b/libcxx/include/__stop_token/stop_token.h
@@ -15,10 +15,6 @@
 #include <__stop_token/intrusive_shared_ptr.h>
 #include <__stop_token/stop_state.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__string/char_traits.h b/libcxx/include/__string/char_traits.h
--- a/libcxx/include/__string/char_traits.h
+++ b/libcxx/include/__string/char_traits.h
@@ -29,10 +29,6 @@
 #   include <cwchar> // for wmemcpy
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__string/constexpr_c_functions.h b/libcxx/include/__string/constexpr_c_functions.h
--- a/libcxx/include/__string/constexpr_c_functions.h
+++ b/libcxx/include/__string/constexpr_c_functions.h
@@ -17,10 +17,6 @@
 #include <__type_traits/remove_cv.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Type used to encode that a function takes an integer that represents a number
diff --git a/libcxx/include/__string/extern_template_lists.h b/libcxx/include/__string/extern_template_lists.h
--- a/libcxx/include/__string/extern_template_lists.h
+++ b/libcxx/include/__string/extern_template_lists.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 // We maintain 2 ABI lists:
 // - _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST
 // - _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST
diff --git a/libcxx/include/__system_error/errc.h b/libcxx/include/__system_error/errc.h
--- a/libcxx/include/__system_error/errc.h
+++ b/libcxx/include/__system_error/errc.h
@@ -103,10 +103,6 @@
 #include <__config>
 #include <cerrno>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Some error codes are not present on all platforms, so we provide equivalents
diff --git a/libcxx/include/__system_error/error_category.h b/libcxx/include/__system_error/error_category.h
--- a/libcxx/include/__system_error/error_category.h
+++ b/libcxx/include/__system_error/error_category.h
@@ -14,10 +14,6 @@
 #include <__config>
 #include <string>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 class _LIBCPP_EXPORTED_FROM_ABI error_condition;
diff --git a/libcxx/include/__system_error/error_code.h b/libcxx/include/__system_error/error_code.h
--- a/libcxx/include/__system_error/error_code.h
+++ b/libcxx/include/__system_error/error_code.h
@@ -20,10 +20,6 @@
 #include <cstddef>
 #include <string>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__system_error/error_condition.h b/libcxx/include/__system_error/error_condition.h
--- a/libcxx/include/__system_error/error_condition.h
+++ b/libcxx/include/__system_error/error_condition.h
@@ -18,10 +18,6 @@
 #include <cstddef>
 #include <string>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__system_error/system_error.h b/libcxx/include/__system_error/system_error.h
--- a/libcxx/include/__system_error/system_error.h
+++ b/libcxx/include/__system_error/system_error.h
@@ -16,10 +16,6 @@
 #include <stdexcept>
 #include <string>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 class _LIBCPP_EXPORTED_FROM_ABI system_error : public runtime_error {
diff --git a/libcxx/include/__thread/formatter.h b/libcxx/include/__thread/formatter.h
--- a/libcxx/include/__thread/formatter.h
+++ b/libcxx/include/__thread/formatter.h
@@ -23,10 +23,6 @@
 #include <__type_traits/is_same.h>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 23
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__thread/poll_with_backoff.h b/libcxx/include/__thread/poll_with_backoff.h
--- a/libcxx/include/__thread/poll_with_backoff.h
+++ b/libcxx/include/__thread/poll_with_backoff.h
@@ -15,10 +15,6 @@
 #include <__chrono/high_resolution_clock.h>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 static _LIBCPP_CONSTEXPR const int __libcpp_polling_count = 64;
diff --git a/libcxx/include/__thread/this_thread.h b/libcxx/include/__thread/this_thread.h
--- a/libcxx/include/__thread/this_thread.h
+++ b/libcxx/include/__thread/this_thread.h
@@ -18,10 +18,6 @@
 #include <__mutex/unique_lock.h>
 #include <__threading_support>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__thread/thread.h b/libcxx/include/__thread/thread.h
--- a/libcxx/include/__thread/thread.h
+++ b/libcxx/include/__thread/thread.h
@@ -22,10 +22,6 @@
 #include <__utility/forward.h>
 #include <tuple>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp> class __thread_specific_ptr;
diff --git a/libcxx/include/__thread/timed_backoff_policy.h b/libcxx/include/__thread/timed_backoff_policy.h
--- a/libcxx/include/__thread/timed_backoff_policy.h
+++ b/libcxx/include/__thread/timed_backoff_policy.h
@@ -17,10 +17,6 @@
 #  include <__chrono/duration.h>
 #  include <__threading_support>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 struct __libcpp_timed_backoff_policy {
diff --git a/libcxx/include/__threading_support b/libcxx/include/__threading_support
--- a/libcxx/include/__threading_support
+++ b/libcxx/include/__threading_support
@@ -25,10 +25,6 @@
 # include <__support/ibm/nanosleep.h>
 #endif
 
-#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
-#  pragma GCC system_header
-#endif
-
 #if defined(_LIBCPP_HAS_THREAD_API_EXTERNAL)
 # include <__external_threading>
 #elif !defined(_LIBCPP_HAS_NO_THREADS)
diff --git a/libcxx/include/__tree b/libcxx/include/__tree
--- a/libcxx/include/__tree
+++ b/libcxx/include/__tree
@@ -44,10 +44,6 @@
 #include <limits>
 #include <stdexcept>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__tuple/make_tuple_types.h b/libcxx/include/__tuple/make_tuple_types.h
--- a/libcxx/include/__tuple/make_tuple_types.h
+++ b/libcxx/include/__tuple/make_tuple_types.h
@@ -21,10 +21,6 @@
 #include <__type_traits/remove_reference.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__tuple/pair_like.h b/libcxx/include/__tuple/pair_like.h
--- a/libcxx/include/__tuple/pair_like.h
+++ b/libcxx/include/__tuple/pair_like.h
@@ -14,10 +14,6 @@
 #include <__tuple/tuple_size.h>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__tuple/sfinae_helpers.h b/libcxx/include/__tuple/sfinae_helpers.h
--- a/libcxx/include/__tuple/sfinae_helpers.h
+++ b/libcxx/include/__tuple/sfinae_helpers.h
@@ -26,10 +26,6 @@
 #include <__type_traits/remove_reference.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/__tuple/tuple_element.h b/libcxx/include/__tuple/tuple_element.h
--- a/libcxx/include/__tuple/tuple_element.h
+++ b/libcxx/include/__tuple/tuple_element.h
@@ -17,10 +17,6 @@
 #include <__type_traits/add_volatile.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <size_t _Ip, class _Tp> struct _LIBCPP_TEMPLATE_VIS tuple_element;
diff --git a/libcxx/include/__tuple/tuple_indices.h b/libcxx/include/__tuple/tuple_indices.h
--- a/libcxx/include/__tuple/tuple_indices.h
+++ b/libcxx/include/__tuple/tuple_indices.h
@@ -13,10 +13,6 @@
 #include <__utility/integer_sequence.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__tuple/tuple_like.h b/libcxx/include/__tuple/tuple_like.h
--- a/libcxx/include/__tuple/tuple_like.h
+++ b/libcxx/include/__tuple/tuple_like.h
@@ -18,10 +18,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__tuple/tuple_like_ext.h b/libcxx/include/__tuple/tuple_like_ext.h
--- a/libcxx/include/__tuple/tuple_like_ext.h
+++ b/libcxx/include/__tuple/tuple_like_ext.h
@@ -17,10 +17,6 @@
 #include <__type_traits/integral_constant.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp> struct __tuple_like_ext : false_type {};
diff --git a/libcxx/include/__tuple/tuple_size.h b/libcxx/include/__tuple/tuple_size.h
--- a/libcxx/include/__tuple/tuple_size.h
+++ b/libcxx/include/__tuple/tuple_size.h
@@ -16,10 +16,6 @@
 #include <__type_traits/is_volatile.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp> struct _LIBCPP_TEMPLATE_VIS tuple_size;
diff --git a/libcxx/include/__tuple/tuple_types.h b/libcxx/include/__tuple/tuple_types.h
--- a/libcxx/include/__tuple/tuple_types.h
+++ b/libcxx/include/__tuple/tuple_types.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class ..._Tp> struct __tuple_types {};
diff --git a/libcxx/include/__type_traits/add_const.h b/libcxx/include/__type_traits/add_const.h
--- a/libcxx/include/__type_traits/add_const.h
+++ b/libcxx/include/__type_traits/add_const.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/add_cv.h b/libcxx/include/__type_traits/add_cv.h
--- a/libcxx/include/__type_traits/add_cv.h
+++ b/libcxx/include/__type_traits/add_cv.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/add_lvalue_reference.h b/libcxx/include/__type_traits/add_lvalue_reference.h
--- a/libcxx/include/__type_traits/add_lvalue_reference.h
+++ b/libcxx/include/__type_traits/add_lvalue_reference.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/is_referenceable.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__add_lvalue_reference)
diff --git a/libcxx/include/__type_traits/add_pointer.h b/libcxx/include/__type_traits/add_pointer.h
--- a/libcxx/include/__type_traits/add_pointer.h
+++ b/libcxx/include/__type_traits/add_pointer.h
@@ -16,10 +16,6 @@
 #include <__type_traits/remove_cv.h>
 #include <__type_traits/remove_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if !defined(_LIBCPP_WORKAROUND_OBJCXX_COMPILER_INTRINSICS) && __has_builtin(__add_pointer)
diff --git a/libcxx/include/__type_traits/add_rvalue_reference.h b/libcxx/include/__type_traits/add_rvalue_reference.h
--- a/libcxx/include/__type_traits/add_rvalue_reference.h
+++ b/libcxx/include/__type_traits/add_rvalue_reference.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/is_referenceable.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__add_rvalue_reference)
diff --git a/libcxx/include/__type_traits/add_volatile.h b/libcxx/include/__type_traits/add_volatile.h
--- a/libcxx/include/__type_traits/add_volatile.h
+++ b/libcxx/include/__type_traits/add_volatile.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/aligned_storage.h b/libcxx/include/__type_traits/aligned_storage.h
--- a/libcxx/include/__type_traits/aligned_storage.h
+++ b/libcxx/include/__type_traits/aligned_storage.h
@@ -16,10 +16,6 @@
 #include <__type_traits/type_list.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/aligned_union.h b/libcxx/include/__type_traits/aligned_union.h
--- a/libcxx/include/__type_traits/aligned_union.h
+++ b/libcxx/include/__type_traits/aligned_union.h
@@ -14,10 +14,6 @@
 #include <__type_traits/integral_constant.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <size_t _I0, size_t... _In>
diff --git a/libcxx/include/__type_traits/alignment_of.h b/libcxx/include/__type_traits/alignment_of.h
--- a/libcxx/include/__type_traits/alignment_of.h
+++ b/libcxx/include/__type_traits/alignment_of.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/apply_cv.h b/libcxx/include/__type_traits/apply_cv.h
--- a/libcxx/include/__type_traits/apply_cv.h
+++ b/libcxx/include/__type_traits/apply_cv.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_volatile.h>
 #include <__type_traits/remove_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp,
diff --git a/libcxx/include/__type_traits/can_extract_key.h b/libcxx/include/__type_traits/can_extract_key.h
--- a/libcxx/include/__type_traits/can_extract_key.h
+++ b/libcxx/include/__type_traits/can_extract_key.h
@@ -17,10 +17,6 @@
 #include <__type_traits/remove_const.h>
 #include <__type_traits/remove_const_ref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // These traits are used in __tree and __hash_table
diff --git a/libcxx/include/__type_traits/common_reference.h b/libcxx/include/__type_traits/common_reference.h
--- a/libcxx/include/__type_traits/common_reference.h
+++ b/libcxx/include/__type_traits/common_reference.h
@@ -20,10 +20,6 @@
 #include <__type_traits/remove_reference.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // common_reference
diff --git a/libcxx/include/__type_traits/common_type.h b/libcxx/include/__type_traits/common_type.h
--- a/libcxx/include/__type_traits/common_type.h
+++ b/libcxx/include/__type_traits/common_type.h
@@ -17,10 +17,6 @@
 #include <__type_traits/void_t.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__type_traits/conditional.h b/libcxx/include/__type_traits/conditional.h
--- a/libcxx/include/__type_traits/conditional.h
+++ b/libcxx/include/__type_traits/conditional.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <bool>
diff --git a/libcxx/include/__type_traits/conjunction.h b/libcxx/include/__type_traits/conjunction.h
--- a/libcxx/include/__type_traits/conjunction.h
+++ b/libcxx/include/__type_traits/conjunction.h
@@ -14,10 +14,6 @@
 #include <__type_traits/enable_if.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class...>
diff --git a/libcxx/include/__type_traits/copy_cv.h b/libcxx/include/__type_traits/copy_cv.h
--- a/libcxx/include/__type_traits/copy_cv.h
+++ b/libcxx/include/__type_traits/copy_cv.h
@@ -14,10 +14,6 @@
 #include <__type_traits/add_cv.h>
 #include <__type_traits/add_volatile.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Let COPYCV(FROM, TO) be an alias for type TO with the addition of FROM's
diff --git a/libcxx/include/__type_traits/copy_cvref.h b/libcxx/include/__type_traits/copy_cvref.h
--- a/libcxx/include/__type_traits/copy_cvref.h
+++ b/libcxx/include/__type_traits/copy_cvref.h
@@ -14,10 +14,6 @@
 #include <__type_traits/add_rvalue_reference.h>
 #include <__type_traits/copy_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _From, class _To>
diff --git a/libcxx/include/__type_traits/decay.h b/libcxx/include/__type_traits/decay.h
--- a/libcxx/include/__type_traits/decay.h
+++ b/libcxx/include/__type_traits/decay.h
@@ -19,10 +19,6 @@
 #include <__type_traits/remove_extent.h>
 #include <__type_traits/remove_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__decay)
diff --git a/libcxx/include/__type_traits/dependent_type.h b/libcxx/include/__type_traits/dependent_type.h
--- a/libcxx/include/__type_traits/dependent_type.h
+++ b/libcxx/include/__type_traits/dependent_type.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, bool>
diff --git a/libcxx/include/__type_traits/disjunction.h b/libcxx/include/__type_traits/disjunction.h
--- a/libcxx/include/__type_traits/disjunction.h
+++ b/libcxx/include/__type_traits/disjunction.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <bool>
diff --git a/libcxx/include/__type_traits/enable_if.h b/libcxx/include/__type_traits/enable_if.h
--- a/libcxx/include/__type_traits/enable_if.h
+++ b/libcxx/include/__type_traits/enable_if.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <bool, class _Tp = void>
diff --git a/libcxx/include/__type_traits/extent.h b/libcxx/include/__type_traits/extent.h
--- a/libcxx/include/__type_traits/extent.h
+++ b/libcxx/include/__type_traits/extent.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__array_extent)
diff --git a/libcxx/include/__type_traits/has_unique_object_representation.h b/libcxx/include/__type_traits/has_unique_object_representation.h
--- a/libcxx/include/__type_traits/has_unique_object_representation.h
+++ b/libcxx/include/__type_traits/has_unique_object_representation.h
@@ -14,10 +14,6 @@
 #include <__type_traits/remove_all_extents.h>
 #include <__type_traits/remove_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__type_traits/has_virtual_destructor.h b/libcxx/include/__type_traits/has_virtual_destructor.h
--- a/libcxx/include/__type_traits/has_virtual_destructor.h
+++ b/libcxx/include/__type_traits/has_virtual_destructor.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/integral_constant.h b/libcxx/include/__type_traits/integral_constant.h
--- a/libcxx/include/__type_traits/integral_constant.h
+++ b/libcxx/include/__type_traits/integral_constant.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, _Tp __v>
diff --git a/libcxx/include/__type_traits/invoke.h b/libcxx/include/__type_traits/invoke.h
--- a/libcxx/include/__type_traits/invoke.h
+++ b/libcxx/include/__type_traits/invoke.h
@@ -29,10 +29,6 @@
 #include <__utility/declval.h>
 #include <__utility/forward.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 struct __any {
diff --git a/libcxx/include/__type_traits/is_abstract.h b/libcxx/include/__type_traits/is_abstract.h
--- a/libcxx/include/__type_traits/is_abstract.h
+++ b/libcxx/include/__type_traits/is_abstract.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_aggregate.h b/libcxx/include/__type_traits/is_aggregate.h
--- a/libcxx/include/__type_traits/is_aggregate.h
+++ b/libcxx/include/__type_traits/is_aggregate.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__type_traits/is_allocator.h b/libcxx/include/__type_traits/is_allocator.h
--- a/libcxx/include/__type_traits/is_allocator.h
+++ b/libcxx/include/__type_traits/is_allocator.h
@@ -15,10 +15,6 @@
 #include <__utility/declval.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <typename _Alloc, typename = void, typename = void>
diff --git a/libcxx/include/__type_traits/is_always_bitcastable.h b/libcxx/include/__type_traits/is_always_bitcastable.h
--- a/libcxx/include/__type_traits/is_always_bitcastable.h
+++ b/libcxx/include/__type_traits/is_always_bitcastable.h
@@ -17,10 +17,6 @@
 #include <__type_traits/is_trivially_copyable.h>
 #include <__type_traits/remove_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Checks whether an object of type `From` can always be bit-cast to an object of type `To` and represent a valid value
diff --git a/libcxx/include/__type_traits/is_arithmetic.h b/libcxx/include/__type_traits/is_arithmetic.h
--- a/libcxx/include/__type_traits/is_arithmetic.h
+++ b/libcxx/include/__type_traits/is_arithmetic.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_floating_point.h>
 #include <__type_traits/is_integral.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_array.h b/libcxx/include/__type_traits/is_array.h
--- a/libcxx/include/__type_traits/is_array.h
+++ b/libcxx/include/__type_traits/is_array.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // TODO: Clang incorrectly reports that __is_array is true for T[0].
diff --git a/libcxx/include/__type_traits/is_assignable.h b/libcxx/include/__type_traits/is_assignable.h
--- a/libcxx/include/__type_traits/is_assignable.h
+++ b/libcxx/include/__type_traits/is_assignable.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class _Up>
diff --git a/libcxx/include/__type_traits/is_base_of.h b/libcxx/include/__type_traits/is_base_of.h
--- a/libcxx/include/__type_traits/is_base_of.h
+++ b/libcxx/include/__type_traits/is_base_of.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Bp, class _Dp>
diff --git a/libcxx/include/__type_traits/is_bounded_array.h b/libcxx/include/__type_traits/is_bounded_array.h
--- a/libcxx/include/__type_traits/is_bounded_array.h
+++ b/libcxx/include/__type_traits/is_bounded_array.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class>
diff --git a/libcxx/include/__type_traits/is_callable.h b/libcxx/include/__type_traits/is_callable.h
--- a/libcxx/include/__type_traits/is_callable.h
+++ b/libcxx/include/__type_traits/is_callable.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Func, class... _Args, class = decltype(std::declval<_Func>()(std::declval<_Args>()...))>
diff --git a/libcxx/include/__type_traits/is_char_like_type.h b/libcxx/include/__type_traits/is_char_like_type.h
--- a/libcxx/include/__type_traits/is_char_like_type.h
+++ b/libcxx/include/__type_traits/is_char_like_type.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_standard_layout.h>
 #include <__type_traits/is_trivial.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _CharT>
diff --git a/libcxx/include/__type_traits/is_class.h b/libcxx/include/__type_traits/is_class.h
--- a/libcxx/include/__type_traits/is_class.h
+++ b/libcxx/include/__type_traits/is_class.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_compound.h b/libcxx/include/__type_traits/is_compound.h
--- a/libcxx/include/__type_traits/is_compound.h
+++ b/libcxx/include/__type_traits/is_compound.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/is_fundamental.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_compound)
diff --git a/libcxx/include/__type_traits/is_const.h b/libcxx/include/__type_traits/is_const.h
--- a/libcxx/include/__type_traits/is_const.h
+++ b/libcxx/include/__type_traits/is_const.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_const)
diff --git a/libcxx/include/__type_traits/is_constant_evaluated.h b/libcxx/include/__type_traits/is_constant_evaluated.h
--- a/libcxx/include/__type_traits/is_constant_evaluated.h
+++ b/libcxx/include/__type_traits/is_constant_evaluated.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__type_traits/is_constructible.h b/libcxx/include/__type_traits/is_constructible.h
--- a/libcxx/include/__type_traits/is_constructible.h
+++ b/libcxx/include/__type_traits/is_constructible.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class... _Args>
diff --git a/libcxx/include/__type_traits/is_convertible.h b/libcxx/include/__type_traits/is_convertible.h
--- a/libcxx/include/__type_traits/is_convertible.h
+++ b/libcxx/include/__type_traits/is_convertible.h
@@ -18,10 +18,6 @@
 #include <__utility/declval.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_convertible) && !defined(_LIBCPP_USE_IS_CONVERTIBLE_FALLBACK)
diff --git a/libcxx/include/__type_traits/is_copy_assignable.h b/libcxx/include/__type_traits/is_copy_assignable.h
--- a/libcxx/include/__type_traits/is_copy_assignable.h
+++ b/libcxx/include/__type_traits/is_copy_assignable.h
@@ -14,10 +14,6 @@
 #include <__type_traits/add_lvalue_reference.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_copy_constructible.h b/libcxx/include/__type_traits/is_copy_constructible.h
--- a/libcxx/include/__type_traits/is_copy_constructible.h
+++ b/libcxx/include/__type_traits/is_copy_constructible.h
@@ -14,10 +14,6 @@
 #include <__type_traits/add_lvalue_reference.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_core_convertible.h b/libcxx/include/__type_traits/is_core_convertible.h
--- a/libcxx/include/__type_traits/is_core_convertible.h
+++ b/libcxx/include/__type_traits/is_core_convertible.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // [conv.general]/3 says "E is convertible to T" whenever "T t=E;" is well-formed.
diff --git a/libcxx/include/__type_traits/is_default_constructible.h b/libcxx/include/__type_traits/is_default_constructible.h
--- a/libcxx/include/__type_traits/is_default_constructible.h
+++ b/libcxx/include/__type_traits/is_default_constructible.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_destructible.h b/libcxx/include/__type_traits/is_destructible.h
--- a/libcxx/include/__type_traits/is_destructible.h
+++ b/libcxx/include/__type_traits/is_destructible.h
@@ -16,10 +16,6 @@
 #include <__type_traits/remove_all_extents.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_destructible)
diff --git a/libcxx/include/__type_traits/is_empty.h b/libcxx/include/__type_traits/is_empty.h
--- a/libcxx/include/__type_traits/is_empty.h
+++ b/libcxx/include/__type_traits/is_empty.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_enum.h b/libcxx/include/__type_traits/is_enum.h
--- a/libcxx/include/__type_traits/is_enum.h
+++ b/libcxx/include/__type_traits/is_enum.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_equality_comparable.h b/libcxx/include/__type_traits/is_equality_comparable.h
--- a/libcxx/include/__type_traits/is_equality_comparable.h
+++ b/libcxx/include/__type_traits/is_equality_comparable.h
@@ -19,10 +19,6 @@
 #include <__type_traits/void_t.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class _Up, class = void>
diff --git a/libcxx/include/__type_traits/is_execution_policy.h b/libcxx/include/__type_traits/is_execution_policy.h
--- a/libcxx/include/__type_traits/is_execution_policy.h
+++ b/libcxx/include/__type_traits/is_execution_policy.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/remove_cvref.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__type_traits/is_final.h b/libcxx/include/__type_traits/is_final.h
--- a/libcxx/include/__type_traits/is_final.h
+++ b/libcxx/include/__type_traits/is_final.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_floating_point.h b/libcxx/include/__type_traits/is_floating_point.h
--- a/libcxx/include/__type_traits/is_floating_point.h
+++ b/libcxx/include/__type_traits/is_floating_point.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/remove_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // clang-format off
diff --git a/libcxx/include/__type_traits/is_function.h b/libcxx/include/__type_traits/is_function.h
--- a/libcxx/include/__type_traits/is_function.h
+++ b/libcxx/include/__type_traits/is_function.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_const.h>
 #include <__type_traits/is_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_function)
diff --git a/libcxx/include/__type_traits/is_fundamental.h b/libcxx/include/__type_traits/is_fundamental.h
--- a/libcxx/include/__type_traits/is_fundamental.h
+++ b/libcxx/include/__type_traits/is_fundamental.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_null_pointer.h>
 #include <__type_traits/is_void.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_fundamental)
diff --git a/libcxx/include/__type_traits/is_implicitly_default_constructible.h b/libcxx/include/__type_traits/is_implicitly_default_constructible.h
--- a/libcxx/include/__type_traits/is_implicitly_default_constructible.h
+++ b/libcxx/include/__type_traits/is_implicitly_default_constructible.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/is_default_constructible.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/__type_traits/is_integral.h b/libcxx/include/__type_traits/is_integral.h
--- a/libcxx/include/__type_traits/is_integral.h
+++ b/libcxx/include/__type_traits/is_integral.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/remove_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // clang-format off
diff --git a/libcxx/include/__type_traits/is_literal_type.h b/libcxx/include/__type_traits/is_literal_type.h
--- a/libcxx/include/__type_traits/is_literal_type.h
+++ b/libcxx/include/__type_traits/is_literal_type.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS)
diff --git a/libcxx/include/__type_traits/is_member_function_pointer.h b/libcxx/include/__type_traits/is_member_function_pointer.h
--- a/libcxx/include/__type_traits/is_member_function_pointer.h
+++ b/libcxx/include/__type_traits/is_member_function_pointer.h
@@ -15,10 +15,6 @@
 #include <__type_traits/remove_cv.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_member_object_pointer.h b/libcxx/include/__type_traits/is_member_object_pointer.h
--- a/libcxx/include/__type_traits/is_member_object_pointer.h
+++ b/libcxx/include/__type_traits/is_member_object_pointer.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_member_object_pointer)
diff --git a/libcxx/include/__type_traits/is_member_pointer.h b/libcxx/include/__type_traits/is_member_pointer.h
--- a/libcxx/include/__type_traits/is_member_pointer.h
+++ b/libcxx/include/__type_traits/is_member_pointer.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/is_member_function_pointer.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_member_pointer)
diff --git a/libcxx/include/__type_traits/is_move_assignable.h b/libcxx/include/__type_traits/is_move_assignable.h
--- a/libcxx/include/__type_traits/is_move_assignable.h
+++ b/libcxx/include/__type_traits/is_move_assignable.h
@@ -14,10 +14,6 @@
 #include <__type_traits/add_rvalue_reference.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_move_constructible.h b/libcxx/include/__type_traits/is_move_constructible.h
--- a/libcxx/include/__type_traits/is_move_constructible.h
+++ b/libcxx/include/__type_traits/is_move_constructible.h
@@ -13,10 +13,6 @@
 #include <__type_traits/add_rvalue_reference.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_nothrow_assignable.h b/libcxx/include/__type_traits/is_nothrow_assignable.h
--- a/libcxx/include/__type_traits/is_nothrow_assignable.h
+++ b/libcxx/include/__type_traits/is_nothrow_assignable.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class _Arg>
diff --git a/libcxx/include/__type_traits/is_nothrow_constructible.h b/libcxx/include/__type_traits/is_nothrow_constructible.h
--- a/libcxx/include/__type_traits/is_nothrow_constructible.h
+++ b/libcxx/include/__type_traits/is_nothrow_constructible.h
@@ -16,10 +16,6 @@
 #include <__utility/declval.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_nothrow_constructible)
diff --git a/libcxx/include/__type_traits/is_nothrow_convertible.h b/libcxx/include/__type_traits/is_nothrow_convertible.h
--- a/libcxx/include/__type_traits/is_nothrow_convertible.h
+++ b/libcxx/include/__type_traits/is_nothrow_convertible.h
@@ -18,10 +18,6 @@
 #include <__type_traits/lazy.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/include/__type_traits/is_nothrow_copy_assignable.h b/libcxx/include/__type_traits/is_nothrow_copy_assignable.h
--- a/libcxx/include/__type_traits/is_nothrow_copy_assignable.h
+++ b/libcxx/include/__type_traits/is_nothrow_copy_assignable.h
@@ -14,10 +14,6 @@
 #include <__type_traits/add_lvalue_reference.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_nothrow_copy_constructible.h b/libcxx/include/__type_traits/is_nothrow_copy_constructible.h
--- a/libcxx/include/__type_traits/is_nothrow_copy_constructible.h
+++ b/libcxx/include/__type_traits/is_nothrow_copy_constructible.h
@@ -15,10 +15,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/is_nothrow_constructible.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // TODO: remove this implementation once https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611 is fixed
diff --git a/libcxx/include/__type_traits/is_nothrow_default_constructible.h b/libcxx/include/__type_traits/is_nothrow_default_constructible.h
--- a/libcxx/include/__type_traits/is_nothrow_default_constructible.h
+++ b/libcxx/include/__type_traits/is_nothrow_default_constructible.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_nothrow_destructible.h b/libcxx/include/__type_traits/is_nothrow_destructible.h
--- a/libcxx/include/__type_traits/is_nothrow_destructible.h
+++ b/libcxx/include/__type_traits/is_nothrow_destructible.h
@@ -18,10 +18,6 @@
 #include <__utility/declval.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if !defined(_LIBCPP_CXX03_LANG)
diff --git a/libcxx/include/__type_traits/is_nothrow_move_assignable.h b/libcxx/include/__type_traits/is_nothrow_move_assignable.h
--- a/libcxx/include/__type_traits/is_nothrow_move_assignable.h
+++ b/libcxx/include/__type_traits/is_nothrow_move_assignable.h
@@ -14,10 +14,6 @@
 #include <__type_traits/add_rvalue_reference.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_nothrow_move_constructible.h b/libcxx/include/__type_traits/is_nothrow_move_constructible.h
--- a/libcxx/include/__type_traits/is_nothrow_move_constructible.h
+++ b/libcxx/include/__type_traits/is_nothrow_move_constructible.h
@@ -14,10 +14,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/is_nothrow_constructible.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // TODO: remove this implementation once https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611 is fixed
diff --git a/libcxx/include/__type_traits/is_null_pointer.h b/libcxx/include/__type_traits/is_null_pointer.h
--- a/libcxx/include/__type_traits/is_null_pointer.h
+++ b/libcxx/include/__type_traits/is_null_pointer.h
@@ -14,10 +14,6 @@
 #include <__type_traits/remove_cv.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_object.h b/libcxx/include/__type_traits/is_object.h
--- a/libcxx/include/__type_traits/is_object.h
+++ b/libcxx/include/__type_traits/is_object.h
@@ -16,10 +16,6 @@
 #include <__type_traits/is_scalar.h>
 #include <__type_traits/is_union.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_object)
diff --git a/libcxx/include/__type_traits/is_pod.h b/libcxx/include/__type_traits/is_pod.h
--- a/libcxx/include/__type_traits/is_pod.h
+++ b/libcxx/include/__type_traits/is_pod.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_pointer.h b/libcxx/include/__type_traits/is_pointer.h
--- a/libcxx/include/__type_traits/is_pointer.h
+++ b/libcxx/include/__type_traits/is_pointer.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/remove_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_pointer)
diff --git a/libcxx/include/__type_traits/is_polymorphic.h b/libcxx/include/__type_traits/is_polymorphic.h
--- a/libcxx/include/__type_traits/is_polymorphic.h
+++ b/libcxx/include/__type_traits/is_polymorphic.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_primary_template.h b/libcxx/include/__type_traits/is_primary_template.h
--- a/libcxx/include/__type_traits/is_primary_template.h
+++ b/libcxx/include/__type_traits/is_primary_template.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_same.h>
 #include <__type_traits/is_valid_expansion.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_reference.h b/libcxx/include/__type_traits/is_reference.h
--- a/libcxx/include/__type_traits/is_reference.h
+++ b/libcxx/include/__type_traits/is_reference.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_lvalue_reference) && __has_builtin(__is_rvalue_reference) && __has_builtin(__is_reference)
diff --git a/libcxx/include/__type_traits/is_reference_wrapper.h b/libcxx/include/__type_traits/is_reference_wrapper.h
--- a/libcxx/include/__type_traits/is_reference_wrapper.h
+++ b/libcxx/include/__type_traits/is_reference_wrapper.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/remove_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_referenceable.h b/libcxx/include/__type_traits/is_referenceable.h
--- a/libcxx/include/__type_traits/is_referenceable.h
+++ b/libcxx/include/__type_traits/is_referenceable.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/is_same.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_referenceable)
diff --git a/libcxx/include/__type_traits/is_same.h b/libcxx/include/__type_traits/is_same.h
--- a/libcxx/include/__type_traits/is_same.h
+++ b/libcxx/include/__type_traits/is_same.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class _Up>
diff --git a/libcxx/include/__type_traits/is_scalar.h b/libcxx/include/__type_traits/is_scalar.h
--- a/libcxx/include/__type_traits/is_scalar.h
+++ b/libcxx/include/__type_traits/is_scalar.h
@@ -17,10 +17,6 @@
 #include <__type_traits/is_null_pointer.h>
 #include <__type_traits/is_pointer.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_scalar)
diff --git a/libcxx/include/__type_traits/is_scoped_enum.h b/libcxx/include/__type_traits/is_scoped_enum.h
--- a/libcxx/include/__type_traits/is_scoped_enum.h
+++ b/libcxx/include/__type_traits/is_scoped_enum.h
@@ -15,10 +15,6 @@
 #include <__type_traits/is_enum.h>
 #include <__type_traits/underlying_type.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 23
diff --git a/libcxx/include/__type_traits/is_signed.h b/libcxx/include/__type_traits/is_signed.h
--- a/libcxx/include/__type_traits/is_signed.h
+++ b/libcxx/include/__type_traits/is_signed.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_arithmetic.h>
 #include <__type_traits/is_integral.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_signed)
diff --git a/libcxx/include/__type_traits/is_signed_integer.h b/libcxx/include/__type_traits/is_signed_integer.h
--- a/libcxx/include/__type_traits/is_signed_integer.h
+++ b/libcxx/include/__type_traits/is_signed_integer.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // clang-format off
diff --git a/libcxx/include/__type_traits/is_specialization.h b/libcxx/include/__type_traits/is_specialization.h
--- a/libcxx/include/__type_traits/is_specialization.h
+++ b/libcxx/include/__type_traits/is_specialization.h
@@ -24,10 +24,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__type_traits/is_standard_layout.h b/libcxx/include/__type_traits/is_standard_layout.h
--- a/libcxx/include/__type_traits/is_standard_layout.h
+++ b/libcxx/include/__type_traits/is_standard_layout.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_swappable.h b/libcxx/include/__type_traits/is_swappable.h
--- a/libcxx/include/__type_traits/is_swappable.h
+++ b/libcxx/include/__type_traits/is_swappable.h
@@ -24,10 +24,6 @@
 #include <__utility/declval.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_trivial.h b/libcxx/include/__type_traits/is_trivial.h
--- a/libcxx/include/__type_traits/is_trivial.h
+++ b/libcxx/include/__type_traits/is_trivial.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_trivially_assignable.h b/libcxx/include/__type_traits/is_trivially_assignable.h
--- a/libcxx/include/__type_traits/is_trivially_assignable.h
+++ b/libcxx/include/__type_traits/is_trivially_assignable.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class _Arg>
diff --git a/libcxx/include/__type_traits/is_trivially_constructible.h b/libcxx/include/__type_traits/is_trivially_constructible.h
--- a/libcxx/include/__type_traits/is_trivially_constructible.h
+++ b/libcxx/include/__type_traits/is_trivially_constructible.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class... _Args>
diff --git a/libcxx/include/__type_traits/is_trivially_copy_assignable.h b/libcxx/include/__type_traits/is_trivially_copy_assignable.h
--- a/libcxx/include/__type_traits/is_trivially_copy_assignable.h
+++ b/libcxx/include/__type_traits/is_trivially_copy_assignable.h
@@ -14,10 +14,6 @@
 #include <__type_traits/add_lvalue_reference.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_trivially_copy_constructible.h b/libcxx/include/__type_traits/is_trivially_copy_constructible.h
--- a/libcxx/include/__type_traits/is_trivially_copy_constructible.h
+++ b/libcxx/include/__type_traits/is_trivially_copy_constructible.h
@@ -13,10 +13,6 @@
 #include <__type_traits/add_lvalue_reference.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_trivially_copyable.h b/libcxx/include/__type_traits/is_trivially_copyable.h
--- a/libcxx/include/__type_traits/is_trivially_copyable.h
+++ b/libcxx/include/__type_traits/is_trivially_copyable.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_trivially_default_constructible.h b/libcxx/include/__type_traits/is_trivially_default_constructible.h
--- a/libcxx/include/__type_traits/is_trivially_default_constructible.h
+++ b/libcxx/include/__type_traits/is_trivially_default_constructible.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_trivially_destructible.h b/libcxx/include/__type_traits/is_trivially_destructible.h
--- a/libcxx/include/__type_traits/is_trivially_destructible.h
+++ b/libcxx/include/__type_traits/is_trivially_destructible.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/is_destructible.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_trivially_destructible)
diff --git a/libcxx/include/__type_traits/is_trivially_lexicographically_comparable.h b/libcxx/include/__type_traits/is_trivially_lexicographically_comparable.h
--- a/libcxx/include/__type_traits/is_trivially_lexicographically_comparable.h
+++ b/libcxx/include/__type_traits/is_trivially_lexicographically_comparable.h
@@ -17,10 +17,6 @@
 #include <__type_traits/void_t.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // A type is_trivially_lexicographically_comparable if the expression `a <=> b` (or their pre-C++20 equivalents) is
diff --git a/libcxx/include/__type_traits/is_trivially_move_assignable.h b/libcxx/include/__type_traits/is_trivially_move_assignable.h
--- a/libcxx/include/__type_traits/is_trivially_move_assignable.h
+++ b/libcxx/include/__type_traits/is_trivially_move_assignable.h
@@ -14,10 +14,6 @@
 #include <__type_traits/add_rvalue_reference.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_trivially_move_constructible.h b/libcxx/include/__type_traits/is_trivially_move_constructible.h
--- a/libcxx/include/__type_traits/is_trivially_move_constructible.h
+++ b/libcxx/include/__type_traits/is_trivially_move_constructible.h
@@ -13,10 +13,6 @@
 #include <__type_traits/add_rvalue_reference.h>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_unbounded_array.h b/libcxx/include/__type_traits/is_unbounded_array.h
--- a/libcxx/include/__type_traits/is_unbounded_array.h
+++ b/libcxx/include/__type_traits/is_unbounded_array.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class>
diff --git a/libcxx/include/__type_traits/is_union.h b/libcxx/include/__type_traits/is_union.h
--- a/libcxx/include/__type_traits/is_union.h
+++ b/libcxx/include/__type_traits/is_union.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/is_unsigned.h b/libcxx/include/__type_traits/is_unsigned.h
--- a/libcxx/include/__type_traits/is_unsigned.h
+++ b/libcxx/include/__type_traits/is_unsigned.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_arithmetic.h>
 #include <__type_traits/is_integral.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_unsigned)
diff --git a/libcxx/include/__type_traits/is_unsigned_integer.h b/libcxx/include/__type_traits/is_unsigned_integer.h
--- a/libcxx/include/__type_traits/is_unsigned_integer.h
+++ b/libcxx/include/__type_traits/is_unsigned_integer.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // clang-format off
diff --git a/libcxx/include/__type_traits/is_valid_expansion.h b/libcxx/include/__type_traits/is_valid_expansion.h
--- a/libcxx/include/__type_traits/is_valid_expansion.h
+++ b/libcxx/include/__type_traits/is_valid_expansion.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <template <class...> class _Templ, class... _Args, class = _Templ<_Args...> >
diff --git a/libcxx/include/__type_traits/is_void.h b/libcxx/include/__type_traits/is_void.h
--- a/libcxx/include/__type_traits/is_void.h
+++ b/libcxx/include/__type_traits/is_void.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_same.h>
 #include <__type_traits/remove_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_void)
diff --git a/libcxx/include/__type_traits/is_volatile.h b/libcxx/include/__type_traits/is_volatile.h
--- a/libcxx/include/__type_traits/is_volatile.h
+++ b/libcxx/include/__type_traits/is_volatile.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__is_volatile)
diff --git a/libcxx/include/__type_traits/lazy.h b/libcxx/include/__type_traits/lazy.h
--- a/libcxx/include/__type_traits/lazy.h
+++ b/libcxx/include/__type_traits/lazy.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <template <class...> class _Func, class... _Args>
diff --git a/libcxx/include/__type_traits/make_32_64_or_128_bit.h b/libcxx/include/__type_traits/make_32_64_or_128_bit.h
--- a/libcxx/include/__type_traits/make_32_64_or_128_bit.h
+++ b/libcxx/include/__type_traits/make_32_64_or_128_bit.h
@@ -17,10 +17,6 @@
 #include <__type_traits/make_unsigned.h>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 /// Helper to promote an integral to smallest 32, 64, or 128 bit representation.
diff --git a/libcxx/include/__type_traits/make_const_lvalue_ref.h b/libcxx/include/__type_traits/make_const_lvalue_ref.h
--- a/libcxx/include/__type_traits/make_const_lvalue_ref.h
+++ b/libcxx/include/__type_traits/make_const_lvalue_ref.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/remove_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/make_signed.h b/libcxx/include/__type_traits/make_signed.h
--- a/libcxx/include/__type_traits/make_signed.h
+++ b/libcxx/include/__type_traits/make_signed.h
@@ -17,10 +17,6 @@
 #include <__type_traits/remove_cv.h>
 #include <__type_traits/type_list.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__make_signed)
diff --git a/libcxx/include/__type_traits/make_unsigned.h b/libcxx/include/__type_traits/make_unsigned.h
--- a/libcxx/include/__type_traits/make_unsigned.h
+++ b/libcxx/include/__type_traits/make_unsigned.h
@@ -19,10 +19,6 @@
 #include <__type_traits/remove_cv.h>
 #include <__type_traits/type_list.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__make_unsigned)
diff --git a/libcxx/include/__type_traits/maybe_const.h b/libcxx/include/__type_traits/maybe_const.h
--- a/libcxx/include/__type_traits/maybe_const.h
+++ b/libcxx/include/__type_traits/maybe_const.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/conditional.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <bool _Const, class _Tp>
diff --git a/libcxx/include/__type_traits/nat.h b/libcxx/include/__type_traits/nat.h
--- a/libcxx/include/__type_traits/nat.h
+++ b/libcxx/include/__type_traits/nat.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 struct __nat {
diff --git a/libcxx/include/__type_traits/negation.h b/libcxx/include/__type_traits/negation.h
--- a/libcxx/include/__type_traits/negation.h
+++ b/libcxx/include/__type_traits/negation.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Pred>
diff --git a/libcxx/include/__type_traits/noexcept_move_assign_container.h b/libcxx/include/__type_traits/noexcept_move_assign_container.h
--- a/libcxx/include/__type_traits/noexcept_move_assign_container.h
+++ b/libcxx/include/__type_traits/noexcept_move_assign_container.h
@@ -14,10 +14,6 @@
 #include <__type_traits/integral_constant.h>
 #include <__type_traits/is_nothrow_move_assignable.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <typename _Alloc, typename _Traits = allocator_traits<_Alloc> >
diff --git a/libcxx/include/__type_traits/operation_traits.h b/libcxx/include/__type_traits/operation_traits.h
--- a/libcxx/include/__type_traits/operation_traits.h
+++ b/libcxx/include/__type_traits/operation_traits.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Pred, class _Lhs, class _Rhs>
diff --git a/libcxx/include/__type_traits/predicate_traits.h b/libcxx/include/__type_traits/predicate_traits.h
--- a/libcxx/include/__type_traits/predicate_traits.h
+++ b/libcxx/include/__type_traits/predicate_traits.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/integral_constant.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Pred, class _Lhs, class _Rhs>
diff --git a/libcxx/include/__type_traits/promote.h b/libcxx/include/__type_traits/promote.h
--- a/libcxx/include/__type_traits/promote.h
+++ b/libcxx/include/__type_traits/promote.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_same.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/rank.h b/libcxx/include/__type_traits/rank.h
--- a/libcxx/include/__type_traits/rank.h
+++ b/libcxx/include/__type_traits/rank.h
@@ -13,10 +13,6 @@
 #include <__type_traits/integral_constant.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // TODO: Enable using the builtin __array_rank when https://llvm.org/PR57133 is resolved
diff --git a/libcxx/include/__type_traits/remove_all_extents.h b/libcxx/include/__type_traits/remove_all_extents.h
--- a/libcxx/include/__type_traits/remove_all_extents.h
+++ b/libcxx/include/__type_traits/remove_all_extents.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__remove_all_extents)
diff --git a/libcxx/include/__type_traits/remove_const.h b/libcxx/include/__type_traits/remove_const.h
--- a/libcxx/include/__type_traits/remove_const.h
+++ b/libcxx/include/__type_traits/remove_const.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__remove_const)
diff --git a/libcxx/include/__type_traits/remove_const_ref.h b/libcxx/include/__type_traits/remove_const_ref.h
--- a/libcxx/include/__type_traits/remove_const_ref.h
+++ b/libcxx/include/__type_traits/remove_const_ref.h
@@ -13,10 +13,6 @@
 #include <__type_traits/remove_const.h>
 #include <__type_traits/remove_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/remove_cv.h b/libcxx/include/__type_traits/remove_cv.h
--- a/libcxx/include/__type_traits/remove_cv.h
+++ b/libcxx/include/__type_traits/remove_cv.h
@@ -13,10 +13,6 @@
 #include <__type_traits/remove_const.h>
 #include <__type_traits/remove_volatile.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__remove_cv)
diff --git a/libcxx/include/__type_traits/remove_cvref.h b/libcxx/include/__type_traits/remove_cvref.h
--- a/libcxx/include/__type_traits/remove_cvref.h
+++ b/libcxx/include/__type_traits/remove_cvref.h
@@ -14,10 +14,6 @@
 #include <__type_traits/remove_cv.h>
 #include <__type_traits/remove_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__remove_cvref)
diff --git a/libcxx/include/__type_traits/remove_extent.h b/libcxx/include/__type_traits/remove_extent.h
--- a/libcxx/include/__type_traits/remove_extent.h
+++ b/libcxx/include/__type_traits/remove_extent.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__remove_extent)
diff --git a/libcxx/include/__type_traits/remove_pointer.h b/libcxx/include/__type_traits/remove_pointer.h
--- a/libcxx/include/__type_traits/remove_pointer.h
+++ b/libcxx/include/__type_traits/remove_pointer.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if !defined(_LIBCPP_WORKAROUND_OBJCXX_COMPILER_INTRINSICS) && __has_builtin(__remove_pointer)
diff --git a/libcxx/include/__type_traits/remove_reference.h b/libcxx/include/__type_traits/remove_reference.h
--- a/libcxx/include/__type_traits/remove_reference.h
+++ b/libcxx/include/__type_traits/remove_reference.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__remove_reference_t)
diff --git a/libcxx/include/__type_traits/remove_volatile.h b/libcxx/include/__type_traits/remove_volatile.h
--- a/libcxx/include/__type_traits/remove_volatile.h
+++ b/libcxx/include/__type_traits/remove_volatile.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__remove_volatile)
diff --git a/libcxx/include/__type_traits/result_of.h b/libcxx/include/__type_traits/result_of.h
--- a/libcxx/include/__type_traits/result_of.h
+++ b/libcxx/include/__type_traits/result_of.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__functional/invoke.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // result_of
diff --git a/libcxx/include/__type_traits/strip_signature.h b/libcxx/include/__type_traits/strip_signature.h
--- a/libcxx/include/__type_traits/strip_signature.h
+++ b/libcxx/include/__type_traits/strip_signature.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__type_traits/type_identity.h b/libcxx/include/__type_traits/type_identity.h
--- a/libcxx/include/__type_traits/type_identity.h
+++ b/libcxx/include/__type_traits/type_identity.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/type_list.h b/libcxx/include/__type_traits/type_list.h
--- a/libcxx/include/__type_traits/type_list.h
+++ b/libcxx/include/__type_traits/type_list.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Hp, class _Tp>
diff --git a/libcxx/include/__type_traits/underlying_type.h b/libcxx/include/__type_traits/underlying_type.h
--- a/libcxx/include/__type_traits/underlying_type.h
+++ b/libcxx/include/__type_traits/underlying_type.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/is_enum.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, bool = is_enum<_Tp>::value>
diff --git a/libcxx/include/__type_traits/unwrap_ref.h b/libcxx/include/__type_traits/unwrap_ref.h
--- a/libcxx/include/__type_traits/unwrap_ref.h
+++ b/libcxx/include/__type_traits/unwrap_ref.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__type_traits/decay.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__type_traits/void_t.h b/libcxx/include/__type_traits/void_t.h
--- a/libcxx/include/__type_traits/void_t.h
+++ b/libcxx/include/__type_traits/void_t.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__utility/as_const.h b/libcxx/include/__utility/as_const.h
--- a/libcxx/include/__utility/as_const.h
+++ b/libcxx/include/__utility/as_const.h
@@ -14,10 +14,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__utility/auto_cast.h b/libcxx/include/__utility/auto_cast.h
--- a/libcxx/include/__utility/auto_cast.h
+++ b/libcxx/include/__utility/auto_cast.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__type_traits/decay.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #define _LIBCPP_AUTO_CAST(expr) static_cast<::std::__decay_t<decltype((expr))> >(expr)
 
 #endif // _LIBCPP___UTILITY_AUTO_CAST_H
diff --git a/libcxx/include/__utility/cmp.h b/libcxx/include/__utility/cmp.h
--- a/libcxx/include/__utility/cmp.h
+++ b/libcxx/include/__utility/cmp.h
@@ -19,10 +19,6 @@
 #include <__utility/move.h>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/__utility/convert_to_integral.h b/libcxx/include/__utility/convert_to_integral.h
--- a/libcxx/include/__utility/convert_to_integral.h
+++ b/libcxx/include/__utility/convert_to_integral.h
@@ -15,10 +15,6 @@
 #include <__type_traits/is_floating_point.h>
 #include <__type_traits/underlying_type.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
diff --git a/libcxx/include/__utility/declval.h b/libcxx/include/__utility/declval.h
--- a/libcxx/include/__utility/declval.h
+++ b/libcxx/include/__utility/declval.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Suppress deprecation notice for volatile-qualified return type resulting
diff --git a/libcxx/include/__utility/exception_guard.h b/libcxx/include/__utility/exception_guard.h
--- a/libcxx/include/__utility/exception_guard.h
+++ b/libcxx/include/__utility/exception_guard.h
@@ -15,10 +15,6 @@
 #include <__utility/exchange.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // __exception_guard is a helper class for writing code with the strong exception guarantee.
diff --git a/libcxx/include/__utility/exchange.h b/libcxx/include/__utility/exchange.h
--- a/libcxx/include/__utility/exchange.h
+++ b/libcxx/include/__utility/exchange.h
@@ -15,10 +15,6 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 14
diff --git a/libcxx/include/__utility/forward.h b/libcxx/include/__utility/forward.h
--- a/libcxx/include/__utility/forward.h
+++ b/libcxx/include/__utility/forward.h
@@ -14,10 +14,6 @@
 #include <__type_traits/is_reference.h>
 #include <__type_traits/remove_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__utility/forward_like.h b/libcxx/include/__utility/forward_like.h
--- a/libcxx/include/__utility/forward_like.h
+++ b/libcxx/include/__utility/forward_like.h
@@ -16,10 +16,6 @@
 #include <__type_traits/is_reference.h>
 #include <__type_traits/remove_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 23
diff --git a/libcxx/include/__utility/in_place.h b/libcxx/include/__utility/in_place.h
--- a/libcxx/include/__utility/in_place.h
+++ b/libcxx/include/__utility/in_place.h
@@ -13,10 +13,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__utility/integer_sequence.h b/libcxx/include/__utility/integer_sequence.h
--- a/libcxx/include/__utility/integer_sequence.h
+++ b/libcxx/include/__utility/integer_sequence.h
@@ -13,10 +13,6 @@
 #include <__type_traits/is_integral.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <size_t...> struct __tuple_indices;
diff --git a/libcxx/include/__utility/is_pointer_in_range.h b/libcxx/include/__utility/is_pointer_in_range.h
--- a/libcxx/include/__utility/is_pointer_in_range.h
+++ b/libcxx/include/__utility/is_pointer_in_range.h
@@ -20,10 +20,6 @@
 #include <__type_traits/void_t.h>
 #include <__utility/declval.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class _Up>
diff --git a/libcxx/include/__utility/move.h b/libcxx/include/__utility/move.h
--- a/libcxx/include/__utility/move.h
+++ b/libcxx/include/__utility/move.h
@@ -16,10 +16,6 @@
 #include <__type_traits/is_nothrow_move_constructible.h>
 #include <__type_traits/remove_reference.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
diff --git a/libcxx/include/__utility/pair.h b/libcxx/include/__utility/pair.h
--- a/libcxx/include/__utility/pair.h
+++ b/libcxx/include/__utility/pair.h
@@ -51,10 +51,6 @@
 #include <__utility/piecewise_construct.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class, class>
diff --git a/libcxx/include/__utility/piecewise_construct.h b/libcxx/include/__utility/piecewise_construct.h
--- a/libcxx/include/__utility/piecewise_construct.h
+++ b/libcxx/include/__utility/piecewise_construct.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 struct _LIBCPP_TEMPLATE_VIS piecewise_construct_t { explicit piecewise_construct_t() = default; };
diff --git a/libcxx/include/__utility/priority_tag.h b/libcxx/include/__utility/priority_tag.h
--- a/libcxx/include/__utility/priority_tag.h
+++ b/libcxx/include/__utility/priority_tag.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template<size_t _Ip> struct __priority_tag : __priority_tag<_Ip - 1> {};
diff --git a/libcxx/include/__utility/rel_ops.h b/libcxx/include/__utility/rel_ops.h
--- a/libcxx/include/__utility/rel_ops.h
+++ b/libcxx/include/__utility/rel_ops.h
@@ -11,10 +11,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 namespace rel_ops
diff --git a/libcxx/include/__utility/swap.h b/libcxx/include/__utility/swap.h
--- a/libcxx/include/__utility/swap.h
+++ b/libcxx/include/__utility/swap.h
@@ -19,10 +19,6 @@
 #include <__utility/move.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/__utility/terminate_on_exception.h b/libcxx/include/__utility/terminate_on_exception.h
--- a/libcxx/include/__utility/terminate_on_exception.h
+++ b/libcxx/include/__utility/terminate_on_exception.h
@@ -12,10 +12,6 @@
 #include <__config>
 #include <__exception/terminate.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/__utility/to_underlying.h b/libcxx/include/__utility/to_underlying.h
--- a/libcxx/include/__utility/to_underlying.h
+++ b/libcxx/include/__utility/to_underlying.h
@@ -13,10 +13,6 @@
 #include <__config>
 #include <__type_traits/underlying_type.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/__utility/unreachable.h b/libcxx/include/__utility/unreachable.h
--- a/libcxx/include/__utility/unreachable.h
+++ b/libcxx/include/__utility/unreachable.h
@@ -12,10 +12,6 @@
 #include <__assert>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI inline void __libcpp_unreachable() {
diff --git a/libcxx/include/__variant/monostate.h b/libcxx/include/__variant/monostate.h
--- a/libcxx/include/__variant/monostate.h
+++ b/libcxx/include/__variant/monostate.h
@@ -15,10 +15,6 @@
 #include <__functional/hash.h>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/__verbose_abort b/libcxx/include/__verbose_abort
--- a/libcxx/include/__verbose_abort
+++ b/libcxx/include/__verbose_abort
@@ -13,10 +13,6 @@
 #include <__availability>
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // This function should never be called directly from the code -- it should only be called through
diff --git a/libcxx/include/algorithm b/libcxx/include/algorithm
--- a/libcxx/include/algorithm
+++ b/libcxx/include/algorithm
@@ -1947,10 +1947,6 @@
 // [algorithm.syn]
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <atomic>
 #  include <bit>
diff --git a/libcxx/include/any b/libcxx/include/any
--- a/libcxx/include/any
+++ b/libcxx/include/any
@@ -111,10 +111,6 @@
 #include <typeinfo>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 namespace std {
 class _LIBCPP_EXPORTED_FROM_ABI _LIBCPP_AVAILABILITY_BAD_ANY_CAST bad_any_cast : public bad_cast
 {
diff --git a/libcxx/include/array b/libcxx/include/array
--- a/libcxx/include/array
+++ b/libcxx/include/array
@@ -153,10 +153,6 @@
 #include <__tuple/tuple_element.h>
 #include <__tuple/tuple_size.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, size_t _Size>
diff --git a/libcxx/include/atomic b/libcxx/include/atomic
--- a/libcxx/include/atomic
+++ b/libcxx/include/atomic
@@ -536,10 +536,6 @@
 #include <__config>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifdef _LIBCPP_HAS_NO_ATOMIC_HEADER
 #  error <atomic> is not implemented
 #endif
diff --git a/libcxx/include/barrier b/libcxx/include/barrier
--- a/libcxx/include/barrier
+++ b/libcxx/include/barrier
@@ -59,10 +59,6 @@
 #include <limits>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifdef _LIBCPP_HAS_NO_THREADS
 # error "<barrier> is not supported since libc++ has been configured without support for threads."
 #endif
diff --git a/libcxx/include/bit b/libcxx/include/bit
--- a/libcxx/include/bit
+++ b/libcxx/include/bit
@@ -78,10 +78,6 @@
 #include <__config>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <cstdlib>
 #  include <iosfwd>
diff --git a/libcxx/include/bitset b/libcxx/include/bitset
--- a/libcxx/include/bitset
+++ b/libcxx/include/bitset
@@ -130,10 +130,6 @@
 #include <iosfwd>
 #include <string>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/cassert b/libcxx/include/cassert
--- a/libcxx/include/cassert
+++ b/libcxx/include/cassert
@@ -26,7 +26,3 @@
 #    error "If libc++ starts defining <assert.h>, the __has_include check should move to libc++'s <assert.h>"
 #  endif
 #endif
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
diff --git a/libcxx/include/ccomplex b/libcxx/include/ccomplex
--- a/libcxx/include/ccomplex
+++ b/libcxx/include/ccomplex
@@ -20,8 +20,4 @@
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <complex>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif // _LIBCPP_CCOMPLEX
diff --git a/libcxx/include/cctype b/libcxx/include/cctype
--- a/libcxx/include/cctype
+++ b/libcxx/include/cctype
@@ -46,10 +46,6 @@
           any C Standard Library.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #ifdef isalnum
diff --git a/libcxx/include/cerrno b/libcxx/include/cerrno
--- a/libcxx/include/cerrno
+++ b/libcxx/include/cerrno
@@ -35,8 +35,4 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif // _LIBCPP_CERRNO
diff --git a/libcxx/include/cfenv b/libcxx/include/cfenv
--- a/libcxx/include/cfenv
+++ b/libcxx/include/cfenv
@@ -65,10 +65,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::fenv_t _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/cfloat b/libcxx/include/cfloat
--- a/libcxx/include/cfloat
+++ b/libcxx/include/cfloat
@@ -82,8 +82,4 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif // _LIBCPP_CFLOAT
diff --git a/libcxx/include/charconv b/libcxx/include/charconv
--- a/libcxx/include/charconv
+++ b/libcxx/include/charconv
@@ -85,10 +85,6 @@
 #include <cstdint>
 #include <limits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 _LIBCPP_END_NAMESPACE_STD
diff --git a/libcxx/include/chrono b/libcxx/include/chrono
--- a/libcxx/include/chrono
+++ b/libcxx/include/chrono
@@ -800,10 +800,6 @@
 #endif
 
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <bit>
 #  include <concepts>
diff --git a/libcxx/include/cinttypes b/libcxx/include/cinttypes
--- a/libcxx/include/cinttypes
+++ b/libcxx/include/cinttypes
@@ -252,10 +252,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::imaxdiv_t _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/ciso646 b/libcxx/include/ciso646
--- a/libcxx/include/ciso646
+++ b/libcxx/include/ciso646
@@ -18,8 +18,4 @@
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif // _LIBCPP_CISO646
diff --git a/libcxx/include/climits b/libcxx/include/climits
--- a/libcxx/include/climits
+++ b/libcxx/include/climits
@@ -50,8 +50,4 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif // _LIBCPP_CLIMITS
diff --git a/libcxx/include/clocale b/libcxx/include/clocale
--- a/libcxx/include/clocale
+++ b/libcxx/include/clocale
@@ -47,10 +47,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::lconv _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/cmath b/libcxx/include/cmath
--- a/libcxx/include/cmath
+++ b/libcxx/include/cmath
@@ -325,10 +325,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/codecvt b/libcxx/include/codecvt
--- a/libcxx/include/codecvt
+++ b/libcxx/include/codecvt
@@ -59,10 +59,6 @@
 #include <__locale>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 enum _LIBCPP_DEPRECATED_IN_CXX17 codecvt_mode
diff --git a/libcxx/include/compare b/libcxx/include/compare
--- a/libcxx/include/compare
+++ b/libcxx/include/compare
@@ -157,10 +157,6 @@
 #include <__config>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <type_traits>
 #endif
diff --git a/libcxx/include/complex b/libcxx/include/complex
--- a/libcxx/include/complex
+++ b/libcxx/include/complex
@@ -242,10 +242,6 @@
 #   include <sstream> // for std::basic_ostringstream
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template<class _Tp> class _LIBCPP_TEMPLATE_VIS complex;
diff --git a/libcxx/include/complex.h b/libcxx/include/complex.h
--- a/libcxx/include/complex.h
+++ b/libcxx/include/complex.h
@@ -19,10 +19,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifdef __cplusplus
 #  include <ccomplex>
 #elif __has_include_next(<complex.h>)
diff --git a/libcxx/include/concepts b/libcxx/include/concepts
--- a/libcxx/include/concepts
+++ b/libcxx/include/concepts
@@ -159,8 +159,4 @@
 #  include <type_traits>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif // _LIBCPP_CONCEPTS
diff --git a/libcxx/include/condition_variable b/libcxx/include/condition_variable
--- a/libcxx/include/condition_variable
+++ b/libcxx/include/condition_variable
@@ -121,10 +121,6 @@
 #include <__utility/move.h>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifndef _LIBCPP_HAS_NO_THREADS
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/coroutine b/libcxx/include/coroutine
--- a/libcxx/include/coroutine
+++ b/libcxx/include/coroutine
@@ -51,10 +51,6 @@
 // [coroutine.syn]
 #include <compare>
 
-#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <iosfwd>
 #  include <type_traits>
diff --git a/libcxx/include/csetjmp b/libcxx/include/csetjmp
--- a/libcxx/include/csetjmp
+++ b/libcxx/include/csetjmp
@@ -43,10 +43,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::jmp_buf _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/csignal b/libcxx/include/csignal
--- a/libcxx/include/csignal
+++ b/libcxx/include/csignal
@@ -50,10 +50,6 @@
 #  endif
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::sig_atomic_t _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/cstdarg b/libcxx/include/cstdarg
--- a/libcxx/include/cstdarg
+++ b/libcxx/include/cstdarg
@@ -42,10 +42,6 @@
 #  endif
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::va_list _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/cstdbool b/libcxx/include/cstdbool
--- a/libcxx/include/cstdbool
+++ b/libcxx/include/cstdbool
@@ -22,10 +22,6 @@
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #undef __bool_true_false_are_defined
 #define __bool_true_false_are_defined 1
 
diff --git a/libcxx/include/cstddef b/libcxx/include/cstddef
--- a/libcxx/include/cstddef
+++ b/libcxx/include/cstddef
@@ -50,10 +50,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::nullptr_t;
diff --git a/libcxx/include/cstdint b/libcxx/include/cstdint
--- a/libcxx/include/cstdint
+++ b/libcxx/include/cstdint
@@ -153,10 +153,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::int8_t _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/cstdio b/libcxx/include/cstdio
--- a/libcxx/include/cstdio
+++ b/libcxx/include/cstdio
@@ -108,10 +108,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::FILE _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/cstdlib b/libcxx/include/cstdlib
--- a/libcxx/include/cstdlib
+++ b/libcxx/include/cstdlib
@@ -94,10 +94,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::size_t _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/cstring b/libcxx/include/cstring
--- a/libcxx/include/cstring
+++ b/libcxx/include/cstring
@@ -70,10 +70,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::size_t _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/ctgmath b/libcxx/include/ctgmath
--- a/libcxx/include/ctgmath
+++ b/libcxx/include/ctgmath
@@ -22,8 +22,4 @@
 #include <ccomplex>
 #include <cmath>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif // _LIBCPP_CTGMATH
diff --git a/libcxx/include/ctime b/libcxx/include/ctime
--- a/libcxx/include/ctime
+++ b/libcxx/include/ctime
@@ -56,10 +56,6 @@
 #  endif
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::clock_t _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/ctype.h b/libcxx/include/ctype.h
--- a/libcxx/include/ctype.h
+++ b/libcxx/include/ctype.h
@@ -31,10 +31,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if __has_include_next(<ctype.h>)
 #  include_next <ctype.h>
 #endif
diff --git a/libcxx/include/cuchar b/libcxx/include/cuchar
--- a/libcxx/include/cuchar
+++ b/libcxx/include/cuchar
@@ -49,10 +49,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if !defined(_LIBCPP_CXX03_LANG)
diff --git a/libcxx/include/cwchar b/libcxx/include/cwchar
--- a/libcxx/include/cwchar
+++ b/libcxx/include/cwchar
@@ -121,10 +121,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 using ::mbstate_t _LIBCPP_USING_IF_EXISTS;
diff --git a/libcxx/include/cwctype b/libcxx/include/cwctype
--- a/libcxx/include/cwctype
+++ b/libcxx/include/cwctype
@@ -63,10 +63,6 @@
           not be the case.
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if defined(_LIBCPP_INCLUDED_C_LIBRARY_WCTYPE_H)
diff --git a/libcxx/include/deque b/libcxx/include/deque
--- a/libcxx/include/deque
+++ b/libcxx/include/deque
@@ -234,10 +234,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/errno.h b/libcxx/include/errno.h
--- a/libcxx/include/errno.h
+++ b/libcxx/include/errno.h
@@ -24,10 +24,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if __has_include_next(<errno.h>)
 #  include_next <errno.h>
 #endif
diff --git a/libcxx/include/exception b/libcxx/include/exception
--- a/libcxx/include/exception
+++ b/libcxx/include/exception
@@ -85,10 +85,6 @@
 #include <__exception/terminate.h>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <cstdlib>
 #  include <type_traits>
diff --git a/libcxx/include/execution b/libcxx/include/execution
--- a/libcxx/include/execution
+++ b/libcxx/include/execution
@@ -39,10 +39,6 @@
 #include <__type_traits/remove_cvref.h>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
 _LIBCPP_BEGIN_NAMESPACE_STD
diff --git a/libcxx/include/expected b/libcxx/include/expected
--- a/libcxx/include/expected
+++ b/libcxx/include/expected
@@ -46,9 +46,4 @@
 #include <__expected/unexpected.h>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif // _LIBCPP_EXPECTED
-
diff --git a/libcxx/include/experimental/__config b/libcxx/include/experimental/__config
--- a/libcxx/include/experimental/__config
+++ b/libcxx/include/experimental/__config
@@ -12,10 +12,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #define _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL namespace std { namespace experimental {
 #define _LIBCPP_END_NAMESPACE_EXPERIMENTAL  } }
 #define _VSTD_EXPERIMENTAL std::experimental
diff --git a/libcxx/include/experimental/__memory b/libcxx/include/experimental/__memory
--- a/libcxx/include/experimental/__memory
+++ b/libcxx/include/experimental/__memory
@@ -19,10 +19,6 @@
 #include <experimental/__config>
 #include <experimental/utility> // for erased_type
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS
 
 template <
diff --git a/libcxx/include/experimental/deque b/libcxx/include/experimental/deque
--- a/libcxx/include/experimental/deque
+++ b/libcxx/include/experimental/deque
@@ -34,10 +34,6 @@
 #include <experimental/__config>
 #include <experimental/memory_resource>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/experimental/forward_list b/libcxx/include/experimental/forward_list
--- a/libcxx/include/experimental/forward_list
+++ b/libcxx/include/experimental/forward_list
@@ -34,10 +34,6 @@
 #include <experimental/memory_resource>
 #include <forward_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/experimental/iterator b/libcxx/include/experimental/iterator
--- a/libcxx/include/experimental/iterator
+++ b/libcxx/include/experimental/iterator
@@ -61,10 +61,6 @@
 #include <iosfwd> // char_traits
 #include <iterator>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 14
 
 _LIBCPP_BEGIN_NAMESPACE_LFTS
diff --git a/libcxx/include/experimental/list b/libcxx/include/experimental/list
--- a/libcxx/include/experimental/list
+++ b/libcxx/include/experimental/list
@@ -34,10 +34,6 @@
 #include <experimental/memory_resource>
 #include <list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/experimental/map b/libcxx/include/experimental/map
--- a/libcxx/include/experimental/map
+++ b/libcxx/include/experimental/map
@@ -39,10 +39,6 @@
 #include <experimental/memory_resource>
 #include <map>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/experimental/memory_resource b/libcxx/include/experimental/memory_resource
--- a/libcxx/include/experimental/memory_resource
+++ b/libcxx/include/experimental/memory_resource
@@ -76,10 +76,6 @@
 #include <stdexcept>
 #include <tuple>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/experimental/propagate_const b/libcxx/include/experimental/propagate_const
--- a/libcxx/include/experimental/propagate_const
+++ b/libcxx/include/experimental/propagate_const
@@ -131,10 +131,6 @@
 #include <cstddef>
 #include <experimental/__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if _LIBCPP_STD_VER >= 14
 
 _LIBCPP_BEGIN_NAMESPACE_LFTS_V2
diff --git a/libcxx/include/experimental/regex b/libcxx/include/experimental/regex
--- a/libcxx/include/experimental/regex
+++ b/libcxx/include/experimental/regex
@@ -42,10 +42,6 @@
 #include <experimental/string>
 #include <regex>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/experimental/set b/libcxx/include/experimental/set
--- a/libcxx/include/experimental/set
+++ b/libcxx/include/experimental/set
@@ -39,10 +39,6 @@
 #include <experimental/memory_resource>
 #include <set>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/experimental/simd b/libcxx/include/experimental/simd
--- a/libcxx/include/experimental/simd
+++ b/libcxx/include/experimental/simd
@@ -657,10 +657,6 @@
 #include <experimental/__config>
 #include <tuple>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/experimental/string b/libcxx/include/experimental/string
--- a/libcxx/include/experimental/string
+++ b/libcxx/include/experimental/string
@@ -43,10 +43,6 @@
 #include <experimental/memory_resource>
 #include <string>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/experimental/type_traits b/libcxx/include/experimental/type_traits
--- a/libcxx/include/experimental/type_traits
+++ b/libcxx/include/experimental/type_traits
@@ -76,10 +76,6 @@
 #include <initializer_list>
 #include <type_traits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS
 
 // 3.3.2, Other type transformations
diff --git a/libcxx/include/experimental/unordered_map b/libcxx/include/experimental/unordered_map
--- a/libcxx/include/experimental/unordered_map
+++ b/libcxx/include/experimental/unordered_map
@@ -45,10 +45,6 @@
 #include <experimental/memory_resource>
 #include <unordered_map>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/experimental/unordered_set b/libcxx/include/experimental/unordered_set
--- a/libcxx/include/experimental/unordered_set
+++ b/libcxx/include/experimental/unordered_set
@@ -39,10 +39,6 @@
 #include <experimental/memory_resource>
 #include <unordered_set>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/experimental/utility b/libcxx/include/experimental/utility
--- a/libcxx/include/experimental/utility
+++ b/libcxx/include/experimental/utility
@@ -34,10 +34,6 @@
 #include <experimental/__config>
 #include <utility>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS
 
   struct _LIBCPP_TEMPLATE_VIS erased_type { };
diff --git a/libcxx/include/experimental/vector b/libcxx/include/experimental/vector
--- a/libcxx/include/experimental/vector
+++ b/libcxx/include/experimental/vector
@@ -34,10 +34,6 @@
 #include <experimental/memory_resource>
 #include <vector>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/ext/__hash b/libcxx/include/ext/__hash
--- a/libcxx/include/ext/__hash
+++ b/libcxx/include/ext/__hash
@@ -10,8 +10,6 @@
 #ifndef _LIBCPP_EXT_HASH
 #define _LIBCPP_EXT_HASH
 
-#  pragma GCC system_header
-
 #include <__config>
 #include <cstring>
 #include <stddef.h>
diff --git a/libcxx/include/ext/hash_map b/libcxx/include/ext/hash_map
--- a/libcxx/include/ext/hash_map
+++ b/libcxx/include/ext/hash_map
@@ -217,10 +217,6 @@
 #endif
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 namespace __gnu_cxx {
 
 template <class _Tp, class _Hash,
diff --git a/libcxx/include/ext/hash_set b/libcxx/include/ext/hash_set
--- a/libcxx/include/ext/hash_set
+++ b/libcxx/include/ext/hash_set
@@ -207,10 +207,6 @@
 #endif
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 namespace __gnu_cxx {
 
 
diff --git a/libcxx/include/fenv.h b/libcxx/include/fenv.h
--- a/libcxx/include/fenv.h
+++ b/libcxx/include/fenv.h
@@ -52,10 +52,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if __has_include_next(<fenv.h>)
 #  include_next <fenv.h>
 #endif
diff --git a/libcxx/include/filesystem b/libcxx/include/filesystem
--- a/libcxx/include/filesystem
+++ b/libcxx/include/filesystem
@@ -485,10 +485,6 @@
 # error "The <filesystem> library is not supported since libc++ has been configured without support for a filesystem."
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <concepts>
 #  include <cstdlib>
diff --git a/libcxx/include/float.h b/libcxx/include/float.h
--- a/libcxx/include/float.h
+++ b/libcxx/include/float.h
@@ -72,10 +72,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if __has_include_next(<float.h>)
 #  include_next <float.h>
 #endif
diff --git a/libcxx/include/format b/libcxx/include/format
--- a/libcxx/include/format
+++ b/libcxx/include/format
@@ -199,8 +199,4 @@
 #include <__format/unicode.h>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif // _LIBCPP_FORMAT
diff --git a/libcxx/include/forward_list b/libcxx/include/forward_list
--- a/libcxx/include/forward_list
+++ b/libcxx/include/forward_list
@@ -229,10 +229,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/fstream b/libcxx/include/fstream
--- a/libcxx/include/fstream
+++ b/libcxx/include/fstream
@@ -198,10 +198,6 @@
 #   include <filesystem>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/functional b/libcxx/include/functional
--- a/libcxx/include/functional
+++ b/libcxx/include/functional
@@ -547,10 +547,6 @@
 #include <typeinfo>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <atomic>
 #  include <concepts>
diff --git a/libcxx/include/future b/libcxx/include/future
--- a/libcxx/include/future
+++ b/libcxx/include/future
@@ -392,10 +392,6 @@
 #include <thread>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifdef _LIBCPP_HAS_NO_THREADS
 # error "<future> is not supported since libc++ has been configured without support for threads."
 #endif
diff --git a/libcxx/include/initializer_list b/libcxx/include/initializer_list
--- a/libcxx/include/initializer_list
+++ b/libcxx/include/initializer_list
@@ -46,10 +46,6 @@
 #include <__config>
 #include <cstddef>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 namespace std  // purposefully not versioned
 {
 
diff --git a/libcxx/include/inttypes.h b/libcxx/include/inttypes.h
--- a/libcxx/include/inttypes.h
+++ b/libcxx/include/inttypes.h
@@ -237,10 +237,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 /* C99 stdlib (e.g. glibc < 2.18) does not provide format macros needed
    for C++11 unless __STDC_FORMAT_MACROS is defined
 */
diff --git a/libcxx/include/iomanip b/libcxx/include/iomanip
--- a/libcxx/include/iomanip
+++ b/libcxx/include/iomanip
@@ -47,10 +47,6 @@
 #include <istream>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // resetiosflags
diff --git a/libcxx/include/ios b/libcxx/include/ios
--- a/libcxx/include/ios
+++ b/libcxx/include/ios
@@ -237,10 +237,6 @@
 #  include <__atomic/atomic.h> // for __xindex_
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 typedef ptrdiff_t streamsize;
diff --git a/libcxx/include/iosfwd b/libcxx/include/iosfwd
--- a/libcxx/include/iosfwd
+++ b/libcxx/include/iosfwd
@@ -106,10 +106,6 @@
 #include <__std_mbstate_t.h>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 class _LIBCPP_EXPORTED_FROM_ABI ios_base;
diff --git a/libcxx/include/iostream b/libcxx/include/iostream
--- a/libcxx/include/iostream
+++ b/libcxx/include/iostream
@@ -45,10 +45,6 @@
 #include <ostream>
 #include <streambuf>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 extern _LIBCPP_EXPORTED_FROM_ABI istream cin;
diff --git a/libcxx/include/istream b/libcxx/include/istream
--- a/libcxx/include/istream
+++ b/libcxx/include/istream
@@ -170,10 +170,6 @@
 #include <ostream>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/iterator b/libcxx/include/iterator
--- a/libcxx/include/iterator
+++ b/libcxx/include/iterator
@@ -727,10 +727,6 @@
 #include <compare>
 #include <concepts>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <cstdlib>
 #  include <exception>
diff --git a/libcxx/include/latch b/libcxx/include/latch
--- a/libcxx/include/latch
+++ b/libcxx/include/latch
@@ -50,10 +50,6 @@
 #include <limits>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifdef _LIBCPP_HAS_NO_THREADS
 # error "<latch> is not supported since libc++ has been configured without support for threads."
 #endif
diff --git a/libcxx/include/limits b/libcxx/include/limits
--- a/libcxx/include/limits
+++ b/libcxx/include/limits
@@ -108,10 +108,6 @@
 #include <__type_traits/is_signed.h>
 #include <__type_traits/remove_cv.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 #include <version>
diff --git a/libcxx/include/limits.h b/libcxx/include/limits.h
--- a/libcxx/include/limits.h
+++ b/libcxx/include/limits.h
@@ -39,10 +39,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifdef _LIBCPP_COMPILER_GCC
 
 // GCC header limits.h recursively includes itself through another header called
diff --git a/libcxx/include/list b/libcxx/include/list
--- a/libcxx/include/list
+++ b/libcxx/include/list
@@ -235,10 +235,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/locale b/libcxx/include/locale
--- a/libcxx/include/locale
+++ b/libcxx/include/locale
@@ -230,10 +230,6 @@
 #  include <__locale_dir/locale_base_api/bsd_locale_fallbacks.h>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/locale.h b/libcxx/include/locale.h
--- a/libcxx/include/locale.h
+++ b/libcxx/include/locale.h
@@ -39,10 +39,6 @@
 #   error "<locale.h> is not supported since libc++ has been configured without support for localization."
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if __has_include_next(<locale.h>)
 #  include_next <locale.h>
 #endif
diff --git a/libcxx/include/map b/libcxx/include/map
--- a/libcxx/include/map
+++ b/libcxx/include/map
@@ -574,10 +574,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Key, class _CP, class _Compare,
diff --git a/libcxx/include/math.h b/libcxx/include/math.h
--- a/libcxx/include/math.h
+++ b/libcxx/include/math.h
@@ -293,10 +293,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #  if __has_include_next(<math.h>)
 #    include_next <math.h>
 #  endif
diff --git a/libcxx/include/mdspan b/libcxx/include/mdspan
--- a/libcxx/include/mdspan
+++ b/libcxx/include/mdspan
@@ -62,8 +62,4 @@
 #include <__config>
 #include <__mdspan/extents.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif // _LIBCPP_MDSPAN
diff --git a/libcxx/include/memory b/libcxx/include/memory
--- a/libcxx/include/memory
+++ b/libcxx/include/memory
@@ -908,10 +908,6 @@
 // [memory.syn]
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <atomic>
 #  include <concepts>
diff --git a/libcxx/include/memory_resource b/libcxx/include/memory_resource
--- a/libcxx/include/memory_resource
+++ b/libcxx/include/memory_resource
@@ -58,8 +58,4 @@
 #include <__memory_resource/unsynchronized_pool_resource.h>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif /* _LIBCPP_MEMORY_RESOURCE */
diff --git a/libcxx/include/mutex b/libcxx/include/mutex
--- a/libcxx/include/mutex
+++ b/libcxx/include/mutex
@@ -204,10 +204,6 @@
 #endif
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/new b/libcxx/include/new
--- a/libcxx/include/new
+++ b/libcxx/include/new
@@ -103,10 +103,6 @@
 #include <new.h>
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(__cpp_sized_deallocation) || __cpp_sized_deallocation  < 201309L
 #define _LIBCPP_HAS_NO_LANGUAGE_SIZED_DEALLOCATION
 #endif
diff --git a/libcxx/include/numbers b/libcxx/include/numbers
--- a/libcxx/include/numbers
+++ b/libcxx/include/numbers
@@ -65,10 +65,6 @@
 
 #if _LIBCPP_STD_VER >= 20
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 namespace numbers {
diff --git a/libcxx/include/numeric b/libcxx/include/numeric
--- a/libcxx/include/numeric
+++ b/libcxx/include/numeric
@@ -165,10 +165,6 @@
 #include <__numeric/transform_inclusive_scan.h>
 #include <__numeric/transform_reduce.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <concepts>
 #  include <functional>
diff --git a/libcxx/include/optional b/libcxx/include/optional
--- a/libcxx/include/optional
+++ b/libcxx/include/optional
@@ -235,10 +235,6 @@
 // [optional.syn]
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 namespace std  // purposefully not using versioning namespace
 {
 
diff --git a/libcxx/include/ostream b/libcxx/include/ostream
--- a/libcxx/include/ostream
+++ b/libcxx/include/ostream
@@ -182,10 +182,6 @@
 #include <streambuf>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _CharT, class _Traits>
diff --git a/libcxx/include/queue b/libcxx/include/queue
--- a/libcxx/include/queue
+++ b/libcxx/include/queue
@@ -279,10 +279,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class _Container = deque<_Tp> > class _LIBCPP_TEMPLATE_VIS queue;
diff --git a/libcxx/include/random b/libcxx/include/random
--- a/libcxx/include/random
+++ b/libcxx/include/random
@@ -1723,10 +1723,6 @@
 // [rand.synopsis]
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <algorithm>
 #  include <climits>
diff --git a/libcxx/include/ranges b/libcxx/include/ranges
--- a/libcxx/include/ranges
+++ b/libcxx/include/ranges
@@ -398,10 +398,6 @@
 #include <__tuple/tuple_element.h>
 #include <__tuple/tuple_size.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <cstdlib>
 #  include <type_traits>
diff --git a/libcxx/include/ratio b/libcxx/include/ratio
--- a/libcxx/include/ratio
+++ b/libcxx/include/ratio
@@ -88,10 +88,6 @@
 #include <cstdint>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/regex b/libcxx/include/regex
--- a/libcxx/include/regex
+++ b/libcxx/include/regex
@@ -817,10 +817,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/scoped_allocator b/libcxx/include/scoped_allocator
--- a/libcxx/include/scoped_allocator
+++ b/libcxx/include/scoped_allocator
@@ -126,10 +126,6 @@
 #include <tuple>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if !defined(_LIBCPP_CXX03_LANG)
diff --git a/libcxx/include/semaphore b/libcxx/include/semaphore
--- a/libcxx/include/semaphore
+++ b/libcxx/include/semaphore
@@ -58,10 +58,6 @@
 #include <limits>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifdef _LIBCPP_HAS_NO_THREADS
 # error "<semaphore> is not supported since libc++ has been configured without support for threads."
 #endif
diff --git a/libcxx/include/set b/libcxx/include/set
--- a/libcxx/include/set
+++ b/libcxx/include/set
@@ -510,10 +510,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Key, class _Compare, class _Allocator>
diff --git a/libcxx/include/setjmp.h b/libcxx/include/setjmp.h
--- a/libcxx/include/setjmp.h
+++ b/libcxx/include/setjmp.h
@@ -27,10 +27,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if __has_include_next(<setjmp.h>)
 #  include_next <setjmp.h>
 #endif
diff --git a/libcxx/include/shared_mutex b/libcxx/include/shared_mutex
--- a/libcxx/include/shared_mutex
+++ b/libcxx/include/shared_mutex
@@ -144,10 +144,6 @@
 
 #if _LIBCPP_STD_VER >= 14 || defined(_LIBCPP_BUILDING_LIBRARY)
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifdef _LIBCPP_HAS_NO_THREADS
 # error "<shared_mutex> is not supported since libc++ has been configured without support for threads."
 #endif
diff --git a/libcxx/include/source_location b/libcxx/include/source_location
--- a/libcxx/include/source_location
+++ b/libcxx/include/source_location
@@ -29,10 +29,6 @@
 #include <cstdint>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20 && __has_builtin(__builtin_source_location) &&                                               \
diff --git a/libcxx/include/span b/libcxx/include/span
--- a/libcxx/include/span
+++ b/libcxx/include/span
@@ -160,10 +160,6 @@
 #include <__iterator/reverse_access.h>
 #include <__iterator/size.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/sstream b/libcxx/include/sstream
--- a/libcxx/include/sstream
+++ b/libcxx/include/sstream
@@ -198,10 +198,6 @@
 #include <string>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/stack b/libcxx/include/stack
--- a/libcxx/include/stack
+++ b/libcxx/include/stack
@@ -134,10 +134,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class _Container = deque<_Tp> > class _LIBCPP_TEMPLATE_VIS stack;
diff --git a/libcxx/include/stdatomic.h b/libcxx/include/stdatomic.h
--- a/libcxx/include/stdatomic.h
+++ b/libcxx/include/stdatomic.h
@@ -117,10 +117,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if defined(__cplusplus) && _LIBCPP_STD_VER >= 23
 
 #include <atomic>
diff --git a/libcxx/include/stdbool.h b/libcxx/include/stdbool.h
--- a/libcxx/include/stdbool.h
+++ b/libcxx/include/stdbool.h
@@ -21,10 +21,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if __has_include_next(<stdbool.h>)
 #  include_next <stdbool.h>
 #endif
diff --git a/libcxx/include/stddef.h b/libcxx/include/stddef.h
--- a/libcxx/include/stddef.h
+++ b/libcxx/include/stddef.h
@@ -10,10 +10,6 @@
 #if defined(__need_ptrdiff_t) || defined(__need_size_t) || \
     defined(__need_wchar_t) || defined(__need_NULL) || defined(__need_wint_t)
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #include_next <stddef.h>
 
 #elif !defined(_LIBCPP_STDDEF_H)
@@ -38,10 +34,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #  if __has_include_next(<stddef.h>)
 #    include_next <stddef.h>
 #  endif
diff --git a/libcxx/include/stdexcept b/libcxx/include/stdexcept
--- a/libcxx/include/stdexcept
+++ b/libcxx/include/stdexcept
@@ -47,10 +47,6 @@
 #include <__verbose_abort>
 #include <iosfwd>  // for string forward decl
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #ifndef _LIBCPP_ABI_VCRUNTIME
diff --git a/libcxx/include/stdint.h b/libcxx/include/stdint.h
--- a/libcxx/include/stdint.h
+++ b/libcxx/include/stdint.h
@@ -105,10 +105,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 /* C99 stdlib (e.g. glibc < 2.18) does not provide macros needed
    for C++11 unless __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS
    are defined
diff --git a/libcxx/include/stdio.h b/libcxx/include/stdio.h
--- a/libcxx/include/stdio.h
+++ b/libcxx/include/stdio.h
@@ -9,10 +9,6 @@
 
 #if defined(__need_FILE) || defined(__need___FILE)
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #include_next <stdio.h>
 
 #elif !defined(_LIBCPP_STDIO_H)
@@ -100,10 +96,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #  if __has_include_next(<stdio.h>)
 #    include_next <stdio.h>
 #  endif
diff --git a/libcxx/include/stdlib.h b/libcxx/include/stdlib.h
--- a/libcxx/include/stdlib.h
+++ b/libcxx/include/stdlib.h
@@ -9,10 +9,6 @@
 
 #if defined(__need_malloc_and_calloc)
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #include_next <stdlib.h>
 
 #elif !defined(_LIBCPP_STDLIB_H)
@@ -86,10 +82,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #  if __has_include_next(<stdlib.h>)
 #    include_next <stdlib.h>
 #  endif
diff --git a/libcxx/include/stop_token b/libcxx/include/stop_token
--- a/libcxx/include/stop_token
+++ b/libcxx/include/stop_token
@@ -38,10 +38,6 @@
 #include <__stop_token/stop_token.h>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifdef _LIBCPP_HAS_NO_THREADS
 #  error "<stop_token> is not supported since libc++ has been configured without support for threads."
 #endif
diff --git a/libcxx/include/streambuf b/libcxx/include/streambuf
--- a/libcxx/include/streambuf
+++ b/libcxx/include/streambuf
@@ -115,10 +115,6 @@
 #include <iosfwd>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/string b/libcxx/include/string
--- a/libcxx/include/string
+++ b/libcxx/include/string
@@ -604,10 +604,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/string.h b/libcxx/include/string.h
--- a/libcxx/include/string.h
+++ b/libcxx/include/string.h
@@ -53,10 +53,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if __has_include_next(<string.h>)
 #  include_next <string.h>
 #endif
diff --git a/libcxx/include/string_view b/libcxx/include/string_view
--- a/libcxx/include/string_view
+++ b/libcxx/include/string_view
@@ -245,10 +245,6 @@
 // [string.view.synop]
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/strstream b/libcxx/include/strstream
--- a/libcxx/include/strstream
+++ b/libcxx/include/strstream
@@ -135,10 +135,6 @@
 #include <ostream>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstreambuf
diff --git a/libcxx/include/system_error b/libcxx/include/system_error
--- a/libcxx/include/system_error
+++ b/libcxx/include/system_error
@@ -158,10 +158,6 @@
 // [system.error.syn]
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <cstdint>
 #  include <cstring>
diff --git a/libcxx/include/tgmath.h b/libcxx/include/tgmath.h
--- a/libcxx/include/tgmath.h
+++ b/libcxx/include/tgmath.h
@@ -19,10 +19,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifdef __cplusplus
 #  include <ctgmath>
 #else
diff --git a/libcxx/include/thread b/libcxx/include/thread
--- a/libcxx/include/thread
+++ b/libcxx/include/thread
@@ -100,10 +100,6 @@
 // [thread.syn]
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #ifdef _LIBCPP_HAS_NO_THREADS
 # error "<thread> is not supported since libc++ has been configured without support for threads."
 #endif
diff --git a/libcxx/include/tuple b/libcxx/include/tuple
--- a/libcxx/include/tuple
+++ b/libcxx/include/tuple
@@ -266,10 +266,6 @@
 // [tuple.syn]
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #ifndef _LIBCPP_CXX03_LANG
diff --git a/libcxx/include/type_traits b/libcxx/include/type_traits
--- a/libcxx/include/type_traits
+++ b/libcxx/include/type_traits
@@ -539,8 +539,4 @@
 #include <cstdint>
 #include <version>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #endif // _LIBCPP_TYPE_TRAITS
diff --git a/libcxx/include/typeindex b/libcxx/include/typeindex
--- a/libcxx/include/typeindex
+++ b/libcxx/include/typeindex
@@ -54,10 +54,6 @@
 // standard-mandated includes
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 class _LIBCPP_TEMPLATE_VIS type_index
diff --git a/libcxx/include/typeinfo b/libcxx/include/typeinfo
--- a/libcxx/include/typeinfo
+++ b/libcxx/include/typeinfo
@@ -65,10 +65,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if defined(_LIBCPP_ABI_VCRUNTIME)
 #include <vcruntime_typeinfo.h>
 #else
diff --git a/libcxx/include/uchar.h b/libcxx/include/uchar.h
--- a/libcxx/include/uchar.h
+++ b/libcxx/include/uchar.h
@@ -34,10 +34,6 @@
 
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_CXX03_LANG)
 
 // Some platforms don't implement <uchar.h> and we don't want to give a hard
diff --git a/libcxx/include/unordered_map b/libcxx/include/unordered_map
--- a/libcxx/include/unordered_map
+++ b/libcxx/include/unordered_map
@@ -548,10 +548,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Key, class _Cp, class _Hash, class _Pred,
diff --git a/libcxx/include/unordered_set b/libcxx/include/unordered_set
--- a/libcxx/include/unordered_set
+++ b/libcxx/include/unordered_set
@@ -490,10 +490,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
diff --git a/libcxx/include/utility b/libcxx/include/utility
--- a/libcxx/include/utility
+++ b/libcxx/include/utility
@@ -278,10 +278,6 @@
 #include <__tuple/tuple_element.h>
 #include <__tuple/tuple_size.h>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
 #  include <cstdlib>
 #  include <iosfwd>
diff --git a/libcxx/include/valarray b/libcxx/include/valarray
--- a/libcxx/include/valarray
+++ b/libcxx/include/valarray
@@ -370,10 +370,6 @@
 // [valarray.syn]
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/variant b/libcxx/include/variant
--- a/libcxx/include/variant
+++ b/libcxx/include/variant
@@ -251,10 +251,6 @@
 // [variant.syn]
 #include <compare>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/vector b/libcxx/include/vector
--- a/libcxx/include/vector
+++ b/libcxx/include/vector
@@ -370,10 +370,6 @@
 #include <compare>
 #include <initializer_list>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/include/version b/libcxx/include/version
--- a/libcxx/include/version
+++ b/libcxx/include/version
@@ -224,10 +224,6 @@
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 // clang-format off
 
 #if _LIBCPP_STD_VER >= 14
diff --git a/libcxx/include/wchar.h b/libcxx/include/wchar.h
--- a/libcxx/include/wchar.h
+++ b/libcxx/include/wchar.h
@@ -9,10 +9,6 @@
 
 #if defined(__need_wint_t) || defined(__need_mbstate_t)
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 #include_next <wchar.h>
 
 #elif !defined(_LIBCPP_WCHAR_H)
@@ -112,10 +108,6 @@
 #   error "The <wchar.h> header is not supported since libc++ has been configured with LIBCXX_ENABLE_WIDE_CHARACTERS disabled"
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 // We define this here to support older versions of glibc <wchar.h> that do
 // not define this for clang.
 #ifdef __cplusplus
diff --git a/libcxx/include/wctype.h b/libcxx/include/wctype.h
--- a/libcxx/include/wctype.h
+++ b/libcxx/include/wctype.h
@@ -50,10 +50,6 @@
 #   error "The <wctype.h> header is not supported since libc++ has been configured with LIBCXX_ENABLE_WIDE_CHARACTERS disabled"
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 // TODO:
 // In the future, we should unconditionally include_next <wctype.h> here and instead
 // have a mode under which the library does not need libc++'s <wctype.h> or <cwctype>
diff --git a/libcxx/src/include/sso_allocator.h b/libcxx/src/include/sso_allocator.h
--- a/libcxx/src/include/sso_allocator.h
+++ b/libcxx/src/include/sso_allocator.h
@@ -15,10 +15,6 @@
 #include <new>
 #include <type_traits>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, size_t _Np> class _LIBCPP_HIDDEN __sso_allocator;
diff --git a/libcxx/src/std_stream.h b/libcxx/src/std_stream.h
--- a/libcxx/src/std_stream.h
+++ b/libcxx/src/std_stream.h
@@ -16,10 +16,6 @@
 #include <istream>
 #include <ostream>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
diff --git a/libcxx/test/libcxx/lint/lint_headers.sh.py b/libcxx/test/libcxx/lint/lint_headers.sh.py
deleted file mode 100644
--- a/libcxx/test/libcxx/lint/lint_headers.sh.py
+++ /dev/null
@@ -1,63 +0,0 @@
-# RUN: %{python} %s
-
-# Verify that each run of consecutive #include directives
-# in each libcxx/include/ header is maintained in alphabetical order.
-
-import glob
-import os
-import re
-
-
-def exclude_from_consideration(path):
-    return (
-        path.endswith(".txt")
-        or path.endswith(".modulemap.in")
-        or os.path.basename(path) == "__config"
-        or os.path.basename(path) == "__config_site.in"
-        or os.path.basename(path) == "libcxx.imp"
-        or os.path.basename(path).startswith("__pstl")
-        or not os.path.isfile(path)  # TODO: Remove once PSTL integration is finished
-    )
-
-
-def check_for_pragma_GCC_system_header(pretty_fname, lines):
-    if pretty_fname not in ["__undef_macros"]:
-        for line in lines:
-            if re.match("# *pragma GCC system_header\n", line):
-                return True
-        print(
-            "FAILED TO FIND #  pragma GCC system_header in libcxx/include/%s"
-            % pretty_fname
-        )
-        return False
-    return True
-
-
-if __name__ == "__main__":
-    libcxx_test_libcxx_lint = os.path.dirname(os.path.abspath(__file__))
-    libcxx_include = os.path.abspath(
-        os.path.join(libcxx_test_libcxx_lint, "../../../include")
-    )
-    assert os.path.isdir(libcxx_include)
-
-    def pretty(path):
-        return path[len(libcxx_include) + 1 :]
-
-    all_headers = [
-        p
-        for p in (
-            glob.glob(os.path.join(libcxx_include, "*"))
-            + glob.glob(os.path.join(libcxx_include, "__*/*.h"))
-        )
-        if not exclude_from_consideration(p)
-    ]
-
-    okay = True
-    for fname in all_headers:
-        pretty_fname = pretty(fname)
-        with open(fname, "r") as f:
-            lines = f.readlines()
-
-        okay = check_for_pragma_GCC_system_header(pretty_fname, lines) and okay
-
-    assert okay
diff --git a/libcxx/utils/generate_escaped_output_table.py b/libcxx/utils/generate_escaped_output_table.py
--- a/libcxx/utils/generate_escaped_output_table.py
+++ b/libcxx/utils/generate_escaped_output_table.py
@@ -222,10 +222,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 23
diff --git a/libcxx/utils/generate_extended_grapheme_cluster_table.py b/libcxx/utils/generate_extended_grapheme_cluster_table.py
--- a/libcxx/utils/generate_extended_grapheme_cluster_table.py
+++ b/libcxx/utils/generate_extended_grapheme_cluster_table.py
@@ -216,10 +216,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/utils/generate_feature_test_macro_components.py b/libcxx/utils/generate_feature_test_macro_components.py
--- a/libcxx/utils/generate_feature_test_macro_components.py
+++ b/libcxx/utils/generate_feature_test_macro_components.py
@@ -1348,10 +1348,6 @@
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__config>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 // clang-format off
 
 {cxx_macros}
diff --git a/libcxx/utils/generate_width_estimation_table.py b/libcxx/utils/generate_width_estimation_table.py
--- a/libcxx/utils/generate_width_estimation_table.py
+++ b/libcxx/utils/generate_width_estimation_table.py
@@ -249,10 +249,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
diff --git a/libcxx/utils/libcxx/test/params.py b/libcxx/utils/libcxx/test/params.py
--- a/libcxx/utils/libcxx/test/params.py
+++ b/libcxx/utils/libcxx/test/params.py
@@ -209,8 +209,7 @@
         default=True,
         help="Whether to enable warnings when compiling the test suite.",
         actions=lambda warnings: [] if not warnings else
-            [AddOptionalWarningFlag(w) for w in _warningFlags] +
-            [AddCompileFlag("-D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER")],
+            [AddOptionalWarningFlag(w) for w in _warningFlags],
     ),
     Parameter(
         name="use_sanitizer",