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[libc++][NFC] Refactor _LIBCPP_AVAILABILITY_HAS_* macros to always be defined #71002

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Nov 24, 2023
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[libc++][NFC] Refactor _LIBCPP_AVAILABILITY_HAS_* macros to always be defined #71002

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195 changes: 104 additions & 91 deletions libcxx/include/__availability
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Original file line number Diff line number Diff line change
Expand Up @@ -87,57 +87,57 @@

#if defined(_LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS)

// These macros control the availability of std::bad_optional_access and
// other exception types. These were put in the shared library to prevent
// code bloat from every user program defining the vtable for these exception
// types.
//
// Note that when exceptions are disabled, the methods that normally throw
// these exceptions can be used even on older deployment targets, but those
// methods will abort instead of throwing.
// # define _LIBCPP_AVAILABILITY_HAS_NO_BAD_OPTIONAL_ACCESS
# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS

// # define _LIBCPP_AVAILABILITY_HAS_NO_BAD_VARIANT_ACCESS
# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS

// # define _LIBCPP_AVAILABILITY_HAS_NO_BAD_ANY_CAST
# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST

// These macros control the availability of all parts of <filesystem> that
// depend on something in the dylib.
// # define _LIBCPP_AVAILABILITY_HAS_NO_FILESYSTEM_LIBRARY
# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY
# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH
# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP

// This controls the availability of floating-point std::to_chars functions.
// These overloads were added later than the integer overloads.
// # define _LIBCPP_AVAILABILITY_HAS_NO_TO_CHARS_FLOATING_POINT
# define _LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT

// This controls the availability of the C++20 synchronization library,
// which requires shared library support for various operations
// (see libcxx/src/atomic.cpp). This includes <barier>, <latch>,
// <semaphore>, and notification functions on std::atomic.
// # define _LIBCPP_AVAILABILITY_HAS_NO_SYNC
# define _LIBCPP_AVAILABILITY_SYNC

// This controls whether the library claims to provide a default verbose
// termination function, and consequently whether the headers will try
// to use it when the mechanism isn't overriden at compile-time.
// # define _LIBCPP_AVAILABILITY_HAS_NO_VERBOSE_ABORT
# define _LIBCPP_AVAILABILITY_VERBOSE_ABORT

// This controls the availability of the C++17 std::pmr library,
// which is implemented in large part in the built library.
// # define _LIBCPP_AVAILABILITY_HAS_NO_PMR
# define _LIBCPP_AVAILABILITY_PMR

// This controls the availability of the C++20 time zone database.
// The parser code is built in the library.
// # define _LIBCPP_AVAILABILITY_HAS_NO_TZDB
# define _LIBCPP_AVAILABILITY_TZDB
// These macros control the availability of std::bad_optional_access and
// other exception types. These were put in the shared library to prevent
// code bloat from every user program defining the vtable for these exception
// types.
//
// Note that when exceptions are disabled, the methods that normally throw
// these exceptions can be used even on older deployment targets, but those
// methods will abort instead of throwing.
# define _LIBCPP_AVAILABILITY_HAS_BAD_OPTIONAL_ACCESS 1
# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS

# define _LIBCPP_AVAILABILITY_HAS_BAD_VARIANT_ACCESS 1
# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS

# define _LIBCPP_AVAILABILITY_HAS_BAD_ANY_CAST 1
# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST

// These macros control the availability of all parts of <filesystem> that
// depend on something in the dylib.
# define _LIBCPP_AVAILABILITY_HAS_FILESYSTEM_LIBRARY 1
# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY
# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH
# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP

// This controls the availability of floating-point std::to_chars functions.
// These overloads were added later than the integer overloads.
# define _LIBCPP_AVAILABILITY_HAS_TO_CHARS_FLOATING_POINT 1
# define _LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT

// This controls the availability of the C++20 synchronization library,
// which requires shared library support for various operations
// (see libcxx/src/atomic.cpp). This includes <barier>, <latch>,
// <semaphore>, and notification functions on std::atomic.
# define _LIBCPP_AVAILABILITY_HAS_SYNC 1
# define _LIBCPP_AVAILABILITY_SYNC

// This controls whether the library claims to provide a default verbose
// termination function, and consequently whether the headers will try
// to use it when the mechanism isn't overriden at compile-time.
# define _LIBCPP_AVAILABILITY_HAS_VERBOSE_ABORT 1
# define _LIBCPP_AVAILABILITY_VERBOSE_ABORT

// This controls the availability of the C++17 std::pmr library,
// which is implemented in large part in the built library.
# define _LIBCPP_AVAILABILITY_HAS_PMR 1
# define _LIBCPP_AVAILABILITY_PMR

// This controls the availability of the C++20 time zone database.
// The parser code is built in the library.
# define _LIBCPP_AVAILABILITY_HAS_TZDB 1
# define _LIBCPP_AVAILABILITY_TZDB

// Enable additional explicit instantiations of iostreams components. This
// reduces the number of weak definitions generated in programs that use
Expand All @@ -146,28 +146,33 @@
// TODO: Enable additional explicit instantiations on GCC once it supports exclude_from_explicit_instantiation,
// or once libc++ doesn't use the attribute anymore.
// TODO: Enable them on Windows once https://llvm.org/PR41018 has been fixed.
#if defined(_LIBCPP_COMPILER_GCC) || defined(_WIN32)
# define _LIBCPP_AVAILABILITY_HAS_NO_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1
#endif
# if !defined(_LIBCPP_COMPILER_GCC) && !defined(_WIN32)
# define _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 1
# else
# define _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 0
# endif

#elif defined(__APPLE__)

# if (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 50000)
# define _LIBCPP_AVAILABILITY_HAS_NO_BAD_OPTIONAL_ACCESS
# define _LIBCPP_AVAILABILITY_HAS_NO_BAD_VARIANT_ACCESS
# define _LIBCPP_AVAILABILITY_HAS_NO_BAD_ANY_CAST
# endif
# define _LIBCPP_AVAILABILITY_HAS_BAD_OPTIONAL_ACCESS \
(!defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) || __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ >= 50000)

# define _LIBCPP_AVAILABILITY_HAS_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_HAS_BAD_OPTIONAL_ACCESS
# define _LIBCPP_AVAILABILITY_HAS_BAD_ANY_CAST _LIBCPP_AVAILABILITY_HAS_BAD_OPTIONAL_ACCESS

# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS __attribute__((availability(watchos,strict,introduced=5.0)))
# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS
# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS

// <filesystem>
# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101500) || \
(defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 130000) || \
(defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 130000) || \
(defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 60000)
# define _LIBCPP_AVAILABILITY_HAS_NO_FILESYSTEM_LIBRARY
# endif
// <filesystem>
# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101500) || \
(defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 130000) || \
(defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 130000) || \
(defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 60000)
# define _LIBCPP_AVAILABILITY_HAS_FILESYSTEM_LIBRARY 0
# else
# define _LIBCPP_AVAILABILITY_HAS_FILESYSTEM_LIBRARY 1
# endif
# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY \
__attribute__((availability(macos,strict,introduced=10.15))) \
__attribute__((availability(ios,strict,introduced=13.0))) \
Expand All @@ -184,46 +189,52 @@
_Pragma("clang attribute pop") \
_Pragma("clang attribute pop")

// std::to_chars(floating-point)
# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 130300) || \
(defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 160300) || \
(defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 160300) || \
(defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 90300)
# define _LIBCPP_AVAILABILITY_HAS_NO_TO_CHARS_FLOATING_POINT
# endif
// std::to_chars(floating-point)
# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 130300) || \
(defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 160300) || \
(defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 160300) || \
(defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 90300)
# define _LIBCPP_AVAILABILITY_HAS_TO_CHARS_FLOATING_POINT 0
# else
# define _LIBCPP_AVAILABILITY_HAS_TO_CHARS_FLOATING_POINT 1
# endif
# define _LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT \
__attribute__((availability(macos,strict,introduced=13.3))) \
__attribute__((availability(ios,strict,introduced=16.3))) \
__attribute__((availability(tvos,strict,introduced=16.3))) \
__attribute__((availability(watchos,strict,introduced=9.3)))

// c++20 synchronization library
# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 110000) || \
(defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 140000) || \
(defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 140000) || \
(defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 70000)
# define _LIBCPP_AVAILABILITY_HAS_NO_SYNC
# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 110000) || \
(defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 140000) || \
(defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 140000) || \
(defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 70000)
# define _LIBCPP_AVAILABILITY_HAS_SYNC 0
# else
# define _LIBCPP_AVAILABILITY_HAS_SYNC 1
# endif
# define _LIBCPP_AVAILABILITY_SYNC \
__attribute__((availability(macos,strict,introduced=11.0))) \
__attribute__((availability(ios,strict,introduced=14.0))) \
__attribute__((availability(tvos,strict,introduced=14.0))) \
__attribute__((availability(watchos,strict,introduced=7.0)))

// __libcpp_verbose_abort
# if 1 // TODO: Update once this is released
# define _LIBCPP_AVAILABILITY_HAS_NO_VERBOSE_ABORT
# endif
// __libcpp_verbose_abort
// TODO: Update once this is released
# define _LIBCPP_AVAILABILITY_HAS_VERBOSE_ABORT 0

# define _LIBCPP_AVAILABILITY_VERBOSE_ABORT \
__attribute__((unavailable))

// std::pmr
# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 140000) || \
(defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 170000) || \
(defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 170000) || \
(defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 100000)
# define _LIBCPP_AVAILABILITY_HAS_NO_PMR
# endif
// std::pmr
# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 140000) || \
(defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 170000) || \
(defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 170000) || \
(defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 100000)
# define _LIBCPP_AVAILABILITY_HAS_PMR 0
# else
# define _LIBCPP_AVAILABILITY_HAS_PMR 1
# endif
// TODO: Enable std::pmr markup once https://github.com/llvm/llvm-project/issues/40340 has been fixed
// Until then, it is possible for folks to try to use `std::pmr` when back-deploying to targets that don't support
// it and it'll be a load-time error, but we don't have a good alternative because the library won't compile if we
Expand All @@ -238,14 +249,16 @@
# define _LIBCPP_AVAILABILITY_PMR
# endif

# define _LIBCPP_AVAILABILITY_HAS_NO_TZDB
# define _LIBCPP_AVAILABILITY_HAS_TZDB 0
# define _LIBCPP_AVAILABILITY_TZDB __attribute__((unavailable))

# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 120000) || \
(defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 150000) || \
(defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 150000) || \
(defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 80000)
# define _LIBCPP_AVAILABILITY_HAS_NO_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1
# define _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 0
# else
# define _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 1
# endif
#else

Expand Down
2 changes: 1 addition & 1 deletion libcxx/include/__verbose_abort
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Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@ void __libcpp_verbose_abort(const char *__format, ...);
// make sure that the program terminates but without taking any complex dependencies in this header.
#if !defined(_LIBCPP_VERBOSE_ABORT)

# if defined(_LIBCPP_AVAILABILITY_HAS_NO_VERBOSE_ABORT)
# if !_LIBCPP_AVAILABILITY_HAS_VERBOSE_ABORT
// The decltype is there to suppress -Wunused warnings in this configuration.
void __use(const char*, ...);
# define _LIBCPP_VERBOSE_ABORT(...) (decltype(::std::__use(__VA_ARGS__))(), __builtin_abort())
Expand Down
2 changes: 1 addition & 1 deletion libcxx/include/fstream
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Original file line number Diff line number Diff line change
Expand Up @@ -1762,7 +1762,7 @@ basic_fstream<_CharT, _Traits>::close()
this->setstate(ios_base::failbit);
}

#ifndef _LIBCPP_AVAILABILITY_HAS_NO_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1
#if _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ifstream<char>;
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ofstream<char>;
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_filebuf<char>;
Expand Down
2 changes: 1 addition & 1 deletion libcxx/include/sstream
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Original file line number Diff line number Diff line change
Expand Up @@ -1193,7 +1193,7 @@ swap(basic_stringstream<_CharT, _Traits, _Allocator>& __x,
__x.swap(__y);
}

#ifndef _LIBCPP_AVAILABILITY_HAS_NO_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1
#if _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringbuf<char>;
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringstream<char>;
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ostringstream<char>;
Expand Down
17 changes: 9 additions & 8 deletions libcxx/include/version
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Original file line number Diff line number Diff line change
Expand Up @@ -244,6 +244,7 @@ __cpp_lib_within_lifetime 202306L <type_traits>
*/

#include <__assert> // all public C++ headers provide the assertion handler
#include <__availability>
#include <__config>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
Expand Down Expand Up @@ -292,7 +293,7 @@ __cpp_lib_within_lifetime 202306L <type_traits>
# define __cpp_lib_clamp 201603L
# define __cpp_lib_enable_shared_from_this 201603L
// # define __cpp_lib_execution 201603L
# if !defined(_LIBCPP_AVAILABILITY_HAS_NO_FILESYSTEM_LIBRARY)
# if _LIBCPP_AVAILABILITY_HAS_FILESYSTEM_LIBRARY
# define __cpp_lib_filesystem 201703L
# endif
# define __cpp_lib_gcd_lcm 201606L
Expand All @@ -311,7 +312,7 @@ __cpp_lib_within_lifetime 202306L <type_traits>
# define __cpp_lib_make_from_tuple 201606L
# define __cpp_lib_map_try_emplace 201411L
// # define __cpp_lib_math_special_functions 201603L
# if !defined(_LIBCPP_AVAILABILITY_HAS_NO_PMR)
# if _LIBCPP_AVAILABILITY_HAS_PMR
# define __cpp_lib_memory_resource 201603L
# endif
# define __cpp_lib_node_extract 201606L
Expand Down Expand Up @@ -348,10 +349,10 @@ __cpp_lib_within_lifetime 202306L <type_traits>
// # define __cpp_lib_atomic_ref 201806L
// # define __cpp_lib_atomic_shared_ptr 201711L
# define __cpp_lib_atomic_value_initialization 201911L
# if !defined(_LIBCPP_AVAILABILITY_HAS_NO_SYNC)
# if _LIBCPP_AVAILABILITY_HAS_SYNC
# define __cpp_lib_atomic_wait 201907L
# endif
# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_HAS_NO_SYNC)
# if !defined(_LIBCPP_HAS_NO_THREADS) && _LIBCPP_AVAILABILITY_HAS_SYNC
# define __cpp_lib_barrier 201907L
# endif
# define __cpp_lib_bind_front 201907L
Expand Down Expand Up @@ -392,21 +393,21 @@ __cpp_lib_within_lifetime 202306L <type_traits>
// # define __cpp_lib_is_layout_compatible 201907L
# define __cpp_lib_is_nothrow_convertible 201806L
// # define __cpp_lib_is_pointer_interconvertible 201907L
# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN) && !defined(_LIBCPP_AVAILABILITY_HAS_NO_SYNC)
# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN) && _LIBCPP_AVAILABILITY_HAS_SYNC
# define __cpp_lib_jthread 201911L
# endif
# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_HAS_NO_SYNC)
# if !defined(_LIBCPP_HAS_NO_THREADS) && _LIBCPP_AVAILABILITY_HAS_SYNC
# define __cpp_lib_latch 201907L
# endif
# define __cpp_lib_list_remove_return_type 201806L
# define __cpp_lib_math_constants 201907L
# define __cpp_lib_move_iterator_concept 202207L
# if !defined(_LIBCPP_AVAILABILITY_HAS_NO_PMR)
# if _LIBCPP_AVAILABILITY_HAS_PMR
# define __cpp_lib_polymorphic_allocator 201902L
# endif
# define __cpp_lib_ranges 202207L
# define __cpp_lib_remove_cvref 201711L
# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_HAS_NO_SYNC)
# if !defined(_LIBCPP_HAS_NO_THREADS) && _LIBCPP_AVAILABILITY_HAS_SYNC
# define __cpp_lib_semaphore 201907L
# endif
# undef __cpp_lib_shared_ptr_arrays
Expand Down
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