diff --git a/libcxx/include/__ranges/size.h b/libcxx/include/__ranges/size.h
@@ -20,6 +20,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<ranges>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__ranges/subrange.h b/libcxx/include/__ranges/subrange.h
@@ -32,6 +32,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<ranges>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__ranges/take_view.h b/libcxx/include/__ranges/take_view.h
@@ -27,6 +27,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<ranges>)
 #endif
 
 _LIBCPP_PUSH_MACROS

diff --git a/libcxx/include/__ranges/transform_view.h b/libcxx/include/__ranges/transform_view.h
@@ -37,6 +37,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<ranges>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__ranges/view_interface.h b/libcxx/include/__ranges/view_interface.h
@@ -24,6 +24,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<ranges>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__ranges/views.h b/libcxx/include/__ranges/views.h
@@ -14,6 +14,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<ranges>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__split_buffer b/libcxx/include/__split_buffer
@@ -17,6 +17,8 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<vector>)
+#  pragma clang include_instead(<deque>)
 #endif
 
 _LIBCPP_PUSH_MACROS

diff --git a/libcxx/include/__std_stream b/libcxx/include/__std_stream
@@ -18,6 +18,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<streambuf>)
 #endif
 
 _LIBCPP_PUSH_MACROS

diff --git a/libcxx/include/__string b/libcxx/include/__string
@@ -34,6 +34,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<string>)
 #endif
 
 _LIBCPP_PUSH_MACROS

diff --git a/libcxx/include/__thread/poll_with_backoff.h b/libcxx/include/__thread/poll_with_backoff.h
@@ -19,6 +19,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<thread>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__thread/timed_backoff_policy.h b/libcxx/include/__thread/timed_backoff_policy.h
@@ -18,6 +18,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<thread>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__threading_support b/libcxx/include/__threading_support
@@ -25,6 +25,10 @@
 
 #ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
 #  pragma GCC system_header
+#  pragma clang include_instead(<atomic>)
+#  pragma clang include_instead(<mutex>)
+#  pragma clang include_instead(<semaphore>)
+#  pragma clang include_instead(<thread>)
 #endif
 
 #if defined(_LIBCPP_HAS_THREAD_API_EXTERNAL)

diff --git a/libcxx/include/__tree b/libcxx/include/__tree
@@ -20,6 +20,8 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<map>)
+#  pragma clang include_instead(<set>)
 #endif
 
 _LIBCPP_PUSH_MACROS

diff --git a/libcxx/include/__tuple b/libcxx/include/__tuple
@@ -16,6 +16,8 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<tuple>)
+#  pragma clang include_instead(<utility>)
 #endif
 
 

diff --git a/libcxx/include/__utility/as_const.h b/libcxx/include/__utility/as_const.h
@@ -16,6 +16,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/auto_cast.h b/libcxx/include/__utility/auto_cast.h
@@ -15,6 +15,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 #define _LIBCPP_AUTO_CAST(expr) static_cast<typename decay<decltype((expr))>::type>(expr)

diff --git a/libcxx/include/__utility/cmp.h b/libcxx/include/__utility/cmp.h
@@ -17,6 +17,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_PUSH_MACROS

diff --git a/libcxx/include/__utility/declval.h b/libcxx/include/__utility/declval.h
@@ -13,6 +13,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/exchange.h b/libcxx/include/__utility/exchange.h
@@ -16,6 +16,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/forward.h b/libcxx/include/__utility/forward.h
@@ -15,6 +15,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/in_place.h b/libcxx/include/__utility/in_place.h
@@ -14,6 +14,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/integer_sequence.h b/libcxx/include/__utility/integer_sequence.h
@@ -14,6 +14,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/move.h b/libcxx/include/__utility/move.h
@@ -15,6 +15,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/pair.h b/libcxx/include/__utility/pair.h
@@ -22,6 +22,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/piecewise_construct.h b/libcxx/include/__utility/piecewise_construct.h
@@ -13,6 +13,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/priority_tag.h b/libcxx/include/__utility/priority_tag.h
@@ -14,6 +14,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/rel_ops.h b/libcxx/include/__utility/rel_ops.h
@@ -16,6 +16,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/swap.h b/libcxx/include/__utility/swap.h
@@ -17,6 +17,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/to_underlying.h b/libcxx/include/__utility/to_underlying.h
@@ -15,6 +15,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/transaction.h b/libcxx/include/__utility/transaction.h
@@ -16,6 +16,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__utility/unreachable.h b/libcxx/include/__utility/unreachable.h
@@ -14,6 +14,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<utility>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/include/__variant/monostate.h b/libcxx/include/__variant/monostate.h
@@ -16,6 +16,7 @@
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
+#  pragma clang include_instead(<variant>)
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/adjacent_find.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/adjacent_find.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/adjacent_find.h>
+// expected-error@-1 {{header '<__algorithm/adjacent_find.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/adjacent_find.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/adjacent_find.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/all_of.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/all_of.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/all_of.h>
+// expected-error@-1 {{header '<__algorithm/all_of.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/all_of.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/all_of.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/any_of.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/any_of.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/any_of.h>
+// expected-error@-1 {{header '<__algorithm/any_of.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/any_of.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/any_of.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/binary_search.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/binary_search.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/binary_search.h>
+// expected-error@-1 {{header '<__algorithm/binary_search.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/binary_search.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/binary_search.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/clamp.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/clamp.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/clamp.h>
+// expected-error@-1 {{header '<__algorithm/clamp.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/clamp.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/clamp.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/comp.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/comp.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/comp.h>
+// expected-error@-1 {{header '<__algorithm/comp.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/comp.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/comp.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/comp_ref_type.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/comp_ref_type.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/comp_ref_type.h>
+// expected-error@-1 {{header '<__algorithm/comp_ref_type.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/comp_ref_type.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/comp_ref_type.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/copy.h>
+// expected-error@-1 {{header '<__algorithm/copy.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_backward.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_backward.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/copy_backward.h>
+// expected-error@-1 {{header '<__algorithm/copy_backward.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_backward.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_backward.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_if.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_if.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/copy_if.h>
+// expected-error@-1 {{header '<__algorithm/copy_if.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_if.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_if.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_n.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_n.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/copy_n.h>
+// expected-error@-1 {{header '<__algorithm/copy_n.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_n.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/copy_n.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/count.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/count.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/count.h>
+// expected-error@-1 {{header '<__algorithm/count.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/count.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/count.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/count_if.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/count_if.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/count_if.h>
+// expected-error@-1 {{header '<__algorithm/count_if.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/count_if.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/count_if.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/equal.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/equal.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/equal.h>
+// expected-error@-1 {{header '<__algorithm/equal.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/equal.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/equal.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/equal_range.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/equal_range.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/equal_range.h>
+// expected-error@-1 {{header '<__algorithm/equal_range.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/equal_range.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/equal_range.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/fill.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/fill.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/fill.h>
+// expected-error@-1 {{header '<__algorithm/fill.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/fill.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/fill.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/fill_n.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/fill_n.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/fill_n.h>
+// expected-error@-1 {{header '<__algorithm/fill_n.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/fill_n.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/fill_n.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/find.h>
+// expected-error@-1 {{header '<__algorithm/find.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_end.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_end.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/find_end.h>
+// expected-error@-1 {{header '<__algorithm/find_end.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_end.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_end.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_first_of.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_first_of.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/find_first_of.h>
+// expected-error@-1 {{header '<__algorithm/find_first_of.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_first_of.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_first_of.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_if.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_if.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/find_if.h>
+// expected-error@-1 {{header '<__algorithm/find_if.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_if.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_if.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_if_not.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_if_not.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/find_if_not.h>
+// expected-error@-1 {{header '<__algorithm/find_if_not.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_if_not.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/find_if_not.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/for_each.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/for_each.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/for_each.h>
+// expected-error@-1 {{header '<__algorithm/for_each.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/for_each.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/for_each.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/for_each_n.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/for_each_n.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/for_each_n.h>
+// expected-error@-1 {{header '<__algorithm/for_each_n.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/for_each_n.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/for_each_n.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/generate.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/generate.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/generate.h>
+// expected-error@-1 {{header '<__algorithm/generate.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/generate.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/generate.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/generate_n.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/generate_n.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/generate_n.h>
+// expected-error@-1 {{header '<__algorithm/generate_n.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/generate_n.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/generate_n.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/half_positive.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/half_positive.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/half_positive.h>
+// expected-error@-1 {{header '<__algorithm/half_positive.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/half_positive.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/half_positive.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_found_result.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_found_result.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/in_found_result.h>
+// expected-error@-1 {{header '<__algorithm/in_found_result.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_found_result.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_found_result.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_fun_result.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_fun_result.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/in_fun_result.h>
+// expected-error@-1 {{header '<__algorithm/in_fun_result.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_fun_result.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_fun_result.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_in_out_result.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_in_out_result.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/in_in_out_result.h>
+// expected-error@-1 {{header '<__algorithm/in_in_out_result.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_in_out_result.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_in_out_result.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_in_result.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_in_result.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/in_in_result.h>
+// expected-error@-1 {{header '<__algorithm/in_in_result.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_in_result.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_in_result.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_out_out_result.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_out_out_result.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/in_out_out_result.h>
+// expected-error@-1 {{header '<__algorithm/in_out_out_result.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_out_out_result.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_out_out_result.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_out_result.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_out_result.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/in_out_result.h>
+// expected-error@-1 {{header '<__algorithm/in_out_result.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_out_result.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/in_out_result.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/includes.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/includes.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/includes.h>
+// expected-error@-1 {{header '<__algorithm/includes.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/includes.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/includes.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/inplace_merge.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/inplace_merge.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/inplace_merge.h>
+// expected-error@-1 {{header '<__algorithm/inplace_merge.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/inplace_merge.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/inplace_merge.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_heap.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_heap.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/is_heap.h>
+// expected-error@-1 {{header '<__algorithm/is_heap.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_heap.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_heap.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_heap_until.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_heap_until.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/is_heap_until.h>
+// expected-error@-1 {{header '<__algorithm/is_heap_until.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_heap_until.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_heap_until.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_partitioned.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_partitioned.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/is_partitioned.h>
+// expected-error@-1 {{header '<__algorithm/is_partitioned.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_partitioned.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_partitioned.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_permutation.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_permutation.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/is_permutation.h>
+// expected-error@-1 {{header '<__algorithm/is_permutation.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_permutation.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_permutation.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_sorted.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_sorted.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/is_sorted.h>
+// expected-error@-1 {{header '<__algorithm/is_sorted.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_sorted.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_sorted.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_sorted_until.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_sorted_until.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/is_sorted_until.h>
+// expected-error@-1 {{header '<__algorithm/is_sorted_until.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_sorted_until.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/is_sorted_until.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/iter_swap.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/iter_swap.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/iter_swap.h>
+// expected-error@-1 {{header '<__algorithm/iter_swap.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/iter_swap.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/iter_swap.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/...est/libcxx/diagnostics/detail.headers/algorithm/lexicographical_compare.header.verify.cpp b/...est/libcxx/diagnostics/detail.headers/algorithm/lexicographical_compare.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/lexicographical_compare.h>
+// expected-error@-1 {{header '<__algorithm/lexicographical_compare.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/...est/libcxx/diagnostics/detail.headers/algorithm/lexicographical_compare.module.verify.cpp b/...est/libcxx/diagnostics/detail.headers/algorithm/lexicographical_compare.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/lower_bound.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/lower_bound.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/lower_bound.h>
+// expected-error@-1 {{header '<__algorithm/lower_bound.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/lower_bound.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/lower_bound.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/make_heap.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/make_heap.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/make_heap.h>
+// expected-error@-1 {{header '<__algorithm/make_heap.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/make_heap.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/make_heap.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/max.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/max.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/max.h>
+// expected-error@-1 {{header '<__algorithm/max.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/max.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/max.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/max_element.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/max_element.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/max_element.h>
+// expected-error@-1 {{header '<__algorithm/max_element.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/max_element.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/max_element.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/merge.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/merge.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/merge.h>
+// expected-error@-1 {{header '<__algorithm/merge.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/merge.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/merge.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/min.h>
+// expected-error@-1 {{header '<__algorithm/min.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min_element.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min_element.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/min_element.h>
+// expected-error@-1 {{header '<__algorithm/min_element.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min_element.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min_element.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min_max_result.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min_max_result.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/min_max_result.h>
+// expected-error@-1 {{header '<__algorithm/min_max_result.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min_max_result.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/min_max_result.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/minmax.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/minmax.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/minmax.h>
+// expected-error@-1 {{header '<__algorithm/minmax.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/minmax.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/minmax.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/minmax_element.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/minmax_element.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/minmax_element.h>
+// expected-error@-1 {{header '<__algorithm/minmax_element.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/minmax_element.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/minmax_element.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/mismatch.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/mismatch.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/mismatch.h>
+// expected-error@-1 {{header '<__algorithm/mismatch.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/mismatch.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/mismatch.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/move.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/move.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/move.h>
+// expected-error@-1 {{header '<__algorithm/move.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/move.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/move.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/move_backward.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/move_backward.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/move_backward.h>
+// expected-error@-1 {{header '<__algorithm/move_backward.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/move_backward.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/move_backward.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/next_permutation.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/next_permutation.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/next_permutation.h>
+// expected-error@-1 {{header '<__algorithm/next_permutation.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/next_permutation.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/next_permutation.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/none_of.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/none_of.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/none_of.h>
+// expected-error@-1 {{header '<__algorithm/none_of.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/none_of.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/none_of.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/nth_element.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/nth_element.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/nth_element.h>
+// expected-error@-1 {{header '<__algorithm/nth_element.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/nth_element.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/nth_element.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partial_sort.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partial_sort.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/partial_sort.h>
+// expected-error@-1 {{header '<__algorithm/partial_sort.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partial_sort.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partial_sort.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partial_sort_copy.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partial_sort_copy.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/partial_sort_copy.h>
+// expected-error@-1 {{header '<__algorithm/partial_sort_copy.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partial_sort_copy.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partial_sort_copy.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/partition.h>
+// expected-error@-1 {{header '<__algorithm/partition.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition_copy.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition_copy.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/partition_copy.h>
+// expected-error@-1 {{header '<__algorithm/partition_copy.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition_copy.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition_copy.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition_point.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition_point.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/partition_point.h>
+// expected-error@-1 {{header '<__algorithm/partition_point.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition_point.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/partition_point.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/pop_heap.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/pop_heap.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/pop_heap.h>
+// expected-error@-1 {{header '<__algorithm/pop_heap.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/pop_heap.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/pop_heap.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/prev_permutation.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/prev_permutation.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/prev_permutation.h>
+// expected-error@-1 {{header '<__algorithm/prev_permutation.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/prev_permutation.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/prev_permutation.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/push_heap.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/push_heap.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/push_heap.h>
+// expected-error@-1 {{header '<__algorithm/push_heap.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/push_heap.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/push_heap.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/ranges_min_element.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/ranges_min_element.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/ranges_min_element.h>
+// expected-error@-1 {{header '<__algorithm/ranges_min_element.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/ranges_min_element.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/ranges_min_element.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/ranges_swap_ranges.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/ranges_swap_ranges.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/ranges_swap_ranges.h>
+// expected-error@-1 {{header '<__algorithm/ranges_swap_ranges.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/ranges_swap_ranges.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/ranges_swap_ranges.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/remove.h>
+// expected-error@-1 {{header '<__algorithm/remove.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_copy.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_copy.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/remove_copy.h>
+// expected-error@-1 {{header '<__algorithm/remove_copy.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_copy.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_copy.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_copy_if.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_copy_if.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/remove_copy_if.h>
+// expected-error@-1 {{header '<__algorithm/remove_copy_if.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_copy_if.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_copy_if.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_if.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_if.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/remove_if.h>
+// expected-error@-1 {{header '<__algorithm/remove_if.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_if.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/remove_if.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/replace.h>
+// expected-error@-1 {{header '<__algorithm/replace.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_copy.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_copy.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/replace_copy.h>
+// expected-error@-1 {{header '<__algorithm/replace_copy.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_copy.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_copy.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_copy_if.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_copy_if.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/replace_copy_if.h>
+// expected-error@-1 {{header '<__algorithm/replace_copy_if.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_copy_if.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_copy_if.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_if.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_if.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/replace_if.h>
+// expected-error@-1 {{header '<__algorithm/replace_if.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_if.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/replace_if.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/reverse.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/reverse.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/reverse.h>
+// expected-error@-1 {{header '<__algorithm/reverse.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/reverse.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/reverse.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/reverse_copy.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/reverse_copy.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/reverse_copy.h>
+// expected-error@-1 {{header '<__algorithm/reverse_copy.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/reverse_copy.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/reverse_copy.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/rotate.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/rotate.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/rotate.h>
+// expected-error@-1 {{header '<__algorithm/rotate.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/rotate.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/rotate.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/rotate_copy.header.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/rotate_copy.header.verify.cpp
@@ -0,0 +1,21 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+// UNSUPPORTED: clang-11, clang-12, clang-13
+// UNSUPPORTED: apple-clang-11, apple-clang-12, apple-clang-13
+// UNSUPPORTED: gcc-11
+// UNSUPPORTED: libcpp-has-no-localization, libcpp-has-no-threads
+// ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+#include <__algorithm/rotate_copy.h>
+// expected-error@-1 {{header '<__algorithm/rotate_copy.h>' is an implementation detail; #include '<algorithm>' instead}}
diff --git a/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/rotate_copy.module.verify.cpp b/libcxx/test/libcxx/diagnostics/detail.headers/algorithm/rotate_copy.module.verify.cpp
@@ -1,3 +1,4 @@
+// -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.