[libcxx][iwyu] ensures we IWYU as prep for modules

This has been broken out of D104170 since it should be merged whether or
not we go ahead with the module map changes.

Differential Revision: https://reviews.llvm.org/D104175

libcxx/include/__iterator/advance.h

@@ -15,6 +15,7 @@
 #include <__function_like.h>
 #include <__iterator/concepts.h>
 #include <__iterator/incrementable_traits.h>
+#include <__iterator/iterator_traits.h>
 #include <concepts>
 #include <limits>
 #include <type_traits>

libcxx/include/__iterator/next.h

@@ -11,10 +11,13 @@
 #define _LIBCPP___ITERATOR_NEXT_H
 
 #include <__config>
+#include <__debug>
 #include <__function_like.h>
 #include <__iterator/advance.h>
 #include <__iterator/concepts.h>
 #include <__iterator/incrementable_traits.h>
+#include <__iterator/iterator_traits.h>
+#include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #pragma GCC system_header

libcxx/include/__iterator/prev.h

@@ -11,10 +11,13 @@
 #define _LIBCPP___ITERATOR_PREV_H
 
 #include <__config>
+#include <__debug>
 #include <__function_like.h>
 #include <__iterator/advance.h>
 #include <__iterator/concepts.h>
 #include <__iterator/incrementable_traits.h>
+#include <__iterator/iterator_traits.h>
+#include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #pragma GCC system_header

libcxx/include/__memory/allocation_guard.h

@@ -13,6 +13,7 @@
 #include <__config>
 #include <__memory/allocator_traits.h>
 #include <cstddef>
+#include <utility>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #pragma GCC system_header

libcxx/include/__memory/allocator_traits.h

@@ -361,6 +361,8 @@ struct __rebind_alloc_helper {
 template <class _Tp>
 struct __is_default_allocator : false_type { };
 
+template <class> class allocator;
+
 template <class _Tp>
 struct __is_default_allocator<allocator<_Tp> > : true_type { };
 

libcxx/include/__memory/auto_ptr.h

@@ -11,6 +11,7 @@
 #define _LIBCPP___MEMORY_AUTO_PTR_H
 
 #include <__config>
+#include <__nullptr>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #pragma GCC system_header

libcxx/include/__memory/pointer_safety.h

@@ -11,6 +11,7 @@
 #define _LIBCPP___MEMORY_POINTER_SAFETY_H
 
 #include <__config>
+#include <cstddef>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #pragma GCC system_header

libcxx/include/__memory/pointer_traits.h

@@ -11,6 +11,7 @@
 #define _LIBCPP___MEMORY_POINTER_TRAITS_H
 
 #include <__config>
+#include <__memory/addressof.h>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

libcxx/include/__ranges/access.h

@@ -11,7 +11,9 @@
 
 #include <__config>
 #include <__iterator/concepts.h>
+#include <__iterator/readable_traits.h>
 #include <__ranges/enable_borrowed_range.h>
+#include <concepts>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

libcxx/include/__ranges/concepts.h

@@ -11,9 +11,15 @@
 
 #include <__config>
 #include <__iterator/concepts.h>
+#include <__iterator/incrementable_traits.h>
+#include <__iterator/iter_move.h>
+#include <__iterator/iterator_traits.h>
+#include <__iterator/readable_traits.h>
 #include <__ranges/access.h>
+#include <__ranges/enable_borrowed_range.h>
 #include <__ranges/enable_view.h>
 #include <__ranges/size.h>
+#include <concepts>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

libcxx/include/__ranges/data.h

@@ -12,6 +12,7 @@
 #include <__config>
 #include <__iterator/concepts.h>
 #include <__iterator/iterator_traits.h>
+#include <__memory/pointer_traits.h>
 #include <__ranges/access.h>
 #include <concepts>
 #include <type_traits>

libcxx/include/__ranges/empty.h

@@ -11,6 +11,7 @@
 
 #include <__config>
 #include <__iterator/concepts.h>
+#include <__ranges/access.h>
 #include <__ranges/size.h>
 #include <type_traits>
 

libcxx/include/__ranges/size.h

@@ -13,6 +13,7 @@
 #include <__iterator/concepts.h>
 #include <__iterator/iterator_traits.h>
 #include <__ranges/access.h>
+#include <concepts>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

libcxx/include/__ranges/view_interface.h

@@ -13,9 +13,12 @@
 #include <__iterator/concepts.h>
 #include <__iterator/iterator_traits.h>
 #include <__iterator/prev.h>
+#include <__memory/pointer_traits.h>
 #include <__ranges/access.h>
+#include <__ranges/concepts.h>
 #include <__ranges/empty.h>
 #include <__ranges/enable_view.h>
+#include <concepts>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_duration.pass.cpp

@@ -21,11 +21,13 @@
 // template <class Rep, class Period>
 //   shared_lock(mutex_type& m, const chrono::duration<Rep, Period>& rel_time);
 
-#include <shared_mutex>
 #include <thread>
-#include <vector>
-#include <cstdlib>
+
+#include <atomic>
 #include <cassert>
+#include <cstdlib>
+#include <shared_mutex>
+#include <vector>
 
 #include "make_test_thread.h"
 #include "test_macros.h"

libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_time_point.pass.cpp

@@ -21,11 +21,13 @@
 // template <class Clock, class Duration>
 //   shared_lock(mutex_type& m, const chrono::time_point<Clock, Duration>& abs_time);
 
-#include <shared_mutex>
 #include <thread>
-#include <vector>
-#include <cstdlib>
+
+#include <atomic>
 #include <cassert>
+#include <cstdlib>
+#include <shared_mutex>
+#include <vector>
 
 #include "make_test_thread.h"
 #include "test_macros.h"

libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/lock.pass.cpp

@@ -20,10 +20,12 @@
 
 // void lock();
 
-#include <shared_mutex>
 #include <thread>
+
+#include <atomic>
 #include <cstdlib>
 #include <cassert>
+#include <shared_mutex>
 
 #include "make_test_thread.h"
 #include "test_macros.h"

libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/lock_shared.pass.cpp

@@ -20,11 +20,13 @@
 
 // void lock_shared();
 
-#include <shared_mutex>
 #include <thread>
-#include <vector>
-#include <cstdlib>
+
+#include <atomic>
 #include <cassert>
+#include <cstdlib>
+#include <shared_mutex>
+#include <vector>
 
 #include "make_test_thread.h"
 #include "test_macros.h"

libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_shared_until.pass.cpp

@@ -23,11 +23,13 @@
 // template <class Clock, class Duration>
 //     bool try_lock_shared_until(const chrono::time_point<Clock, Duration>& abs_time);
 
-#include <shared_mutex>
 #include <thread>
-#include <vector>
-#include <cstdlib>
+
+#include <atomic>
 #include <cassert>
+#include <cstdlib>
+#include <shared_mutex>
+#include <vector>
 
 #include "make_test_thread.h"
 #include "test_macros.h"

libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/advance_to.pass.cpp

@@ -13,7 +13,9 @@
 // constexpr void advance_to(const_iterator it);
 
 #include <format>
+
 #include <cassert>
+#include <string_view>
 
 #include "test_macros.h"
 

libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/begin.pass.cpp

@@ -13,7 +13,9 @@
 // constexpr begin() const noexcept;
 
 #include <format>
+
 #include <cassert>
+#include <string_view>
 
 #include "test_macros.h"
 

libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/check_arg_id.pass.cpp

@@ -23,7 +23,9 @@
 // constexpr void check_arg_id(size_t id);
 
 #include <format>
+
 #include <cassert>
+#include <string_view>
 
 #include "test_macros.h"
 

libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/ctor.pass.cpp

@@ -15,7 +15,9 @@
 //                            size_t num_args = 0) noexcept
 
 #include <format>
+
 #include <cassert>
+#include <string_view>
 #include <type_traits>
 
 #include "test_macros.h"

libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/end.pass.cpp

@@ -13,7 +13,9 @@
 // constexpr end() const noexcept;
 
 #include <format>
+
 #include <cassert>
+#include <string_view>
 
 #include "test_macros.h"
 

libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/next_arg_id.pass.cpp

@@ -23,7 +23,9 @@
 // constexpr size_t next_arg_id();
 
 #include <format>
+
 #include <cassert>
+#include <string_view>
 
 #include "test_macros.h"
 

libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/types.compile.pass.cpp

@@ -24,6 +24,8 @@
 // using wformat_parse_context = basic_format_parse_context<wchar_t>;
 
 #include <format>
+
+#include <string_view>
 #include <type_traits>
 
 #include "test_macros.h"

libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_strong.pass.cpp

@@ -20,6 +20,8 @@
 // UNSUPPORTED: c++03
 
 #include <memory>
+
+#include <atomic>
 #include <cassert>
 
 #include "test_macros.h"

libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_strong_explicit.pass.cpp

@@ -21,6 +21,8 @@
 // UNSUPPORTED: c++03
 
 #include <memory>
+
+#include <atomic>
 #include <cassert>
 
 #include "test_macros.h"

libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_weak_explicit.pass.cpp

@@ -21,6 +21,8 @@
 // UNSUPPORTED: c++03
 
 #include <memory>
+
+#include <atomic>
 #include <cassert>
 
 #include "test_macros.h"

libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_exchange_explicit.pass.cpp

@@ -19,6 +19,8 @@
 // UNSUPPORTED: c++03
 
 #include <memory>
+
+#include <atomic>
 #include <cassert>
 
 #include "test_macros.h"

libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_load_explicit.pass.cpp

@@ -19,6 +19,8 @@
 // UNSUPPORTED: c++03
 
 #include <memory>
+
+#include <atomic>
 #include <cassert>
 
 #include "test_macros.h"

libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_store_explicit.pass.cpp

@@ -19,6 +19,8 @@
 // UNSUPPORTED: c++03
 
 #include <memory>
+
+#include <atomic>
 #include <cassert>
 
 #include "test_macros.h"