[libc++] Revert "Protect users from relying on detail headers" & related changes

This commit reverts 5aaefa51 (and also partly 7f285f48e77 and b6d75682f9, which were related to the original commit). As landed, 5aaefa51 had unintended consequences on some downstream bots and didn't have proper coverage upstream due to a few subtle things. Implementing this is something we should do in libc++, however we'll first need to address a few issues listed in https://reviews.llvm.org/D106124#3349710. Differential Revision: https://reviews.llvm.org/D120683
2025-04-01 12:43:47 +00:00 · 2022-02-28 16:37:25 -05:00 · 2022-02-28 16:37:25 -05:00 · 368faacac7
commit 368faacac7
parent 5c73db24df
767 changed files with 10 additions and 8045 deletions
--- a/libcxx/cmake/Modules/HandleLibCXXABI.cmake
+++ b/libcxx/cmake/Modules/HandleLibCXXABI.cmake
@ -117,7 +117,7 @@ elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libcxxabi")

  setup_abi_lib(
    "-DLIBCXX_BUILDING_LIBCXXABI"
-    "${shared}" "${static}" "cxxabi.h;__cxxabi_config.h;threading_support.h" "")
+    "${shared}" "${static}" "cxxabi.h;__cxxabi_config.h" "")
 elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libcxxrt")
  if(NOT LIBCXX_CXX_ABI_INCLUDE_PATHS)
    set(LIBCXX_CXX_ABI_INCLUDE_PATHS "/usr/include/c++/v1")
--- a/libcxx/include/__algorithm/adjacent_find.h
+++ b/libcxx/include/__algorithm/adjacent_find.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/all_of.h
+++ b/libcxx/include/__algorithm/all_of.h
@ -14,7 +14,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/any_of.h
+++ b/libcxx/include/__algorithm/any_of.h
@ -14,7 +14,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/binary_search.h
+++ b/libcxx/include/__algorithm/binary_search.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/clamp.h
+++ b/libcxx/include/__algorithm/clamp.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/comp.h
+++ b/libcxx/include/__algorithm/comp.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/comp_ref_type.h
+++ b/libcxx/include/__algorithm/comp_ref_type.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/copy.h
+++ b/libcxx/include/__algorithm/copy.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/copy_backward.h
+++ b/libcxx/include/__algorithm/copy_backward.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/copy_if.h
+++ b/libcxx/include/__algorithm/copy_if.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/copy_n.h
+++ b/libcxx/include/__algorithm/copy_n.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/count.h
+++ b/libcxx/include/__algorithm/count.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/count_if.h
+++ b/libcxx/include/__algorithm/count_if.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/equal.h
+++ b/libcxx/include/__algorithm/equal.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/equal_range.h
+++ b/libcxx/include/__algorithm/equal_range.h
@ -19,7 +19,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/fill.h
+++ b/libcxx/include/__algorithm/fill.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/fill_n.h
+++ b/libcxx/include/__algorithm/fill_n.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/find.h
+++ b/libcxx/include/__algorithm/find.h
@ -14,7 +14,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/find_end.h
+++ b/libcxx/include/__algorithm/find_end.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/find_first_of.h
+++ b/libcxx/include/__algorithm/find_first_of.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/find_if.h
+++ b/libcxx/include/__algorithm/find_if.h
@ -14,7 +14,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/find_if_not.h
+++ b/libcxx/include/__algorithm/find_if_not.h
@ -14,7 +14,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/for_each.h
+++ b/libcxx/include/__algorithm/for_each.h
@ -14,7 +14,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/for_each_n.h
+++ b/libcxx/include/__algorithm/for_each_n.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/generate.h
+++ b/libcxx/include/__algorithm/generate.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/generate_n.h
+++ b/libcxx/include/__algorithm/generate_n.h
@ -14,7 +14,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/half_positive.h
+++ b/libcxx/include/__algorithm/half_positive.h
@ -14,7 +14,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/in_found_result.h
+++ b/libcxx/include/__algorithm/in_found_result.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 #if !defined(_LIBCPP_HAS_NO_CONCEPTS) && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
--- a/libcxx/include/__algorithm/in_fun_result.h
+++ b/libcxx/include/__algorithm/in_fun_result.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/in_in_out_result.h
+++ b/libcxx/include/__algorithm/in_in_out_result.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/in_in_result.h
+++ b/libcxx/include/__algorithm/in_in_result.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/in_out_out_result.h
+++ b/libcxx/include/__algorithm/in_out_out_result.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/in_out_result.h
+++ b/libcxx/include/__algorithm/in_out_result.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/includes.h
+++ b/libcxx/include/__algorithm/includes.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/inplace_merge.h
+++ b/libcxx/include/__algorithm/inplace_merge.h
@ -23,7 +23,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_PUSH_MACROS
--- a/libcxx/include/__algorithm/is_heap.h
+++ b/libcxx/include/__algorithm/is_heap.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/is_heap_until.h
+++ b/libcxx/include/__algorithm/is_heap_until.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/is_partitioned.h
+++ b/libcxx/include/__algorithm/is_partitioned.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/is_permutation.h
+++ b/libcxx/include/__algorithm/is_permutation.h
@ -18,7 +18,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/is_sorted.h
+++ b/libcxx/include/__algorithm/is_sorted.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/is_sorted_until.h
+++ b/libcxx/include/__algorithm/is_sorted_until.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/iter_swap.h
+++ b/libcxx/include/__algorithm/iter_swap.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/lexicographical_compare.h
+++ b/libcxx/include/__algorithm/lexicographical_compare.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/lower_bound.h
+++ b/libcxx/include/__algorithm/lower_bound.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/make_heap.h
+++ b/libcxx/include/__algorithm/make_heap.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/max.h
+++ b/libcxx/include/__algorithm/max.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_PUSH_MACROS
--- a/libcxx/include/__algorithm/max_element.h
+++ b/libcxx/include/__algorithm/max_element.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/merge.h
+++ b/libcxx/include/__algorithm/merge.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/min.h
+++ b/libcxx/include/__algorithm/min.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_PUSH_MACROS
--- a/libcxx/include/__algorithm/min_element.h
+++ b/libcxx/include/__algorithm/min_element.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/min_max_result.h
+++ b/libcxx/include/__algorithm/min_max_result.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_PUSH_MACROS
--- a/libcxx/include/__algorithm/minmax.h
+++ b/libcxx/include/__algorithm/minmax.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/minmax_element.h
+++ b/libcxx/include/__algorithm/minmax_element.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/mismatch.h
+++ b/libcxx/include/__algorithm/mismatch.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/move.h
+++ b/libcxx/include/__algorithm/move.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/move_backward.h
+++ b/libcxx/include/__algorithm/move_backward.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/next_permutation.h
+++ b/libcxx/include/__algorithm/next_permutation.h
@ -18,7 +18,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/none_of.h
+++ b/libcxx/include/__algorithm/none_of.h
@ -14,7 +14,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/nth_element.h
+++ b/libcxx/include/__algorithm/nth_element.h
@ -22,7 +22,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/partial_sort.h
+++ b/libcxx/include/__algorithm/partial_sort.h
@ -24,7 +24,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/partial_sort_copy.h
+++ b/libcxx/include/__algorithm/partial_sort_copy.h
@ -19,7 +19,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/partition.h
+++ b/libcxx/include/__algorithm/partition.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/partition_copy.h
+++ b/libcxx/include/__algorithm/partition_copy.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/partition_point.h
+++ b/libcxx/include/__algorithm/partition_point.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/pop_heap.h
+++ b/libcxx/include/__algorithm/pop_heap.h
@ -18,7 +18,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/prev_permutation.h
+++ b/libcxx/include/__algorithm/prev_permutation.h
@ -18,7 +18,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/push_heap.h
+++ b/libcxx/include/__algorithm/push_heap.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/ranges_min_element.h
+++ b/libcxx/include/__algorithm/ranges_min_element.h
@ -22,7 +22,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 #if !defined(_LIBCPP_HAS_NO_CONCEPTS) && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
--- a/libcxx/include/__algorithm/ranges_swap_ranges.h
+++ b/libcxx/include/__algorithm/ranges_swap_ranges.h
@ -20,7 +20,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 #ifndef _LIBCPP_HAS_NO_CONCEPTS
--- a/libcxx/include/__algorithm/remove.h
+++ b/libcxx/include/__algorithm/remove.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/remove_copy.h
+++ b/libcxx/include/__algorithm/remove_copy.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/remove_copy_if.h
+++ b/libcxx/include/__algorithm/remove_copy_if.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/remove_if.h
+++ b/libcxx/include/__algorithm/remove_if.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/replace.h
+++ b/libcxx/include/__algorithm/replace.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/replace_copy.h
+++ b/libcxx/include/__algorithm/replace_copy.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/replace_copy_if.h
+++ b/libcxx/include/__algorithm/replace_copy_if.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/replace_if.h
+++ b/libcxx/include/__algorithm/replace_if.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/reverse.h
+++ b/libcxx/include/__algorithm/reverse.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/reverse_copy.h
+++ b/libcxx/include/__algorithm/reverse_copy.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/rotate.h
+++ b/libcxx/include/__algorithm/rotate.h
@ -21,7 +21,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/rotate_copy.h
+++ b/libcxx/include/__algorithm/rotate_copy.h
@ -14,7 +14,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/sample.h
+++ b/libcxx/include/__algorithm/sample.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_PUSH_MACROS
--- a/libcxx/include/__algorithm/search.h
+++ b/libcxx/include/__algorithm/search.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/search_n.h
+++ b/libcxx/include/__algorithm/search_n.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/set_difference.h
+++ b/libcxx/include/__algorithm/set_difference.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/set_intersection.h
+++ b/libcxx/include/__algorithm/set_intersection.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/set_symmetric_difference.h
+++ b/libcxx/include/__algorithm/set_symmetric_difference.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/set_union.h
+++ b/libcxx/include/__algorithm/set_union.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/shift_left.h
+++ b/libcxx/include/__algorithm/shift_left.h
@ -16,7 +16,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/shift_right.h
+++ b/libcxx/include/__algorithm/shift_right.h
@ -19,7 +19,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/shuffle.h
+++ b/libcxx/include/__algorithm/shuffle.h
@ -18,7 +18,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_PUSH_MACROS
--- a/libcxx/include/__algorithm/sift_down.h
+++ b/libcxx/include/__algorithm/sift_down.h
@ -15,7 +15,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/sort.h
+++ b/libcxx/include/__algorithm/sort.h
@ -24,7 +24,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/sort_heap.h
+++ b/libcxx/include/__algorithm/sort_heap.h
@ -18,7 +18,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/stable_partition.h
+++ b/libcxx/include/__algorithm/stable_partition.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/stable_sort.h
+++ b/libcxx/include/__algorithm/stable_sort.h
@ -21,7 +21,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/swap_ranges.h
+++ b/libcxx/include/__algorithm/swap_ranges.h
@ -14,7 +14,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/transform.h
+++ b/libcxx/include/__algorithm/transform.h
@ -13,7 +13,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/libcxx/include/__algorithm/unique.h
+++ b/libcxx/include/__algorithm/unique.h
@ -17,7 +17,6 @@

 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
-#  pragma clang include_instead(<algorithm>)
 #endif

 _LIBCPP_BEGIN_NAMESPACE_STD
--- a/Show More
+++ b/Show More