1// -*- C++ -*- 2//===--------------------------- __config ---------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_CONFIG 11#define _LIBCPP_CONFIG 12 13#include <__config_site> 14 15#if defined(_MSC_VER) && !defined(__clang__) 16# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17# define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 18# endif 19#endif 20 21#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 22#pragma GCC system_header 23#endif 24 25#ifdef __cplusplus 26 27#ifdef __GNUC__ 28# define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__) 29// The _GNUC_VER_NEW macro better represents the new GCC versioning scheme 30// introduced in GCC 5.0. 31# define _GNUC_VER_NEW (_GNUC_VER * 10 + __GNUC_PATCHLEVEL__) 32#else 33# define _GNUC_VER 0 34# define _GNUC_VER_NEW 0 35#endif 36 37#define _LIBCPP_VERSION 13000 38 39#ifndef _LIBCPP_ABI_VERSION 40# define _LIBCPP_ABI_VERSION 1 41#endif 42 43#if __STDC_HOSTED__ == 0 44# define _LIBCPP_FREESTANDING 45#endif 46 47#ifndef _LIBCPP_STD_VER 48# if __cplusplus <= 201103L 49# define _LIBCPP_STD_VER 11 50# elif __cplusplus <= 201402L 51# define _LIBCPP_STD_VER 14 52# elif __cplusplus <= 201703L 53# define _LIBCPP_STD_VER 17 54# elif __cplusplus <= 202002L 55# define _LIBCPP_STD_VER 20 56# else 57# define _LIBCPP_STD_VER 21 // current year, or date of c++2b ratification 58# endif 59#endif // _LIBCPP_STD_VER 60 61#if defined(__ELF__) 62# define _LIBCPP_OBJECT_FORMAT_ELF 1 63#elif defined(__MACH__) 64# define _LIBCPP_OBJECT_FORMAT_MACHO 1 65#elif defined(_WIN32) 66# define _LIBCPP_OBJECT_FORMAT_COFF 1 67#elif defined(__wasm__) 68# define _LIBCPP_OBJECT_FORMAT_WASM 1 69#else 70 // ... add new file formats here ... 71#endif 72 73#if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 74// Change short string representation so that string data starts at offset 0, 75// improving its alignment in some cases. 76# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 77// Fix deque iterator type in order to support incomplete types. 78# define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 79// Fix undefined behavior in how std::list stores its linked nodes. 80# define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB 81// Fix undefined behavior in how __tree stores its end and parent nodes. 82# define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB 83// Fix undefined behavior in how __hash_table stores its pointer types. 84# define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB 85# define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB 86# define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE 87// Don't use a nullptr_t simulation type in C++03 instead using C++11 nullptr 88// provided under the alternate keyword __nullptr, which changes the mangling 89// of nullptr_t. This option is ABI incompatible with GCC in C++03 mode. 90# define _LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR 91// Define a key function for `bad_function_call` in the library, to centralize 92// its vtable and typeinfo to libc++ rather than having all other libraries 93// using that class define their own copies. 94# define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 95// Enable optimized version of __do_get_(un)signed which avoids redundant copies. 96# define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET 97// In C++20 and later, don't derive std::plus from std::binary_function, 98// nor std::negate from std::unary_function. 99# define _LIBCPP_ABI_NO_BINDER_BASES 100// Give reverse_iterator<T> one data member of type T, not two. 101// Also, in C++17 and later, don't derive iterator types from std::iterator. 102# define _LIBCPP_ABI_NO_ITERATOR_BASES 103// Use the smallest possible integer type to represent the index of the variant. 104// Previously libc++ used "unsigned int" exclusively. 105# define _LIBCPP_ABI_VARIANT_INDEX_TYPE_OPTIMIZATION 106// Unstable attempt to provide a more optimized std::function 107# define _LIBCPP_ABI_OPTIMIZED_FUNCTION 108// All the regex constants must be distinct and nonzero. 109# define _LIBCPP_ABI_REGEX_CONSTANTS_NONZERO 110// Use raw pointers, not wrapped ones, for std::span's iterator type. 111# define _LIBCPP_ABI_SPAN_POINTER_ITERATORS 112// Re-worked external template instantiations for std::string with a focus on 113// performance and fast-path inlining. 114# define _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION 115// Enable clang::trivial_abi on std::unique_ptr. 116# define _LIBCPP_ABI_ENABLE_UNIQUE_PTR_TRIVIAL_ABI 117// Enable clang::trivial_abi on std::shared_ptr and std::weak_ptr 118# define _LIBCPP_ABI_ENABLE_SHARED_PTR_TRIVIAL_ABI 119#elif _LIBCPP_ABI_VERSION == 1 120# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 121// Enable compiling copies of now inline methods into the dylib to support 122// applications compiled against older libraries. This is unnecessary with 123// COFF dllexport semantics, since dllexport forces a non-inline definition 124// of inline functions to be emitted anyway. Our own non-inline copy would 125// conflict with the dllexport-emitted copy, so we disable it. 126# define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS 127# endif 128// Feature macros for disabling pre ABI v1 features. All of these options 129// are deprecated. 130# if defined(__FreeBSD__) 131# define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR 132# endif 133#endif 134 135#if defined(_LIBCPP_BUILDING_LIBRARY) || defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 136// Enable additional explicit instantiations of iostreams components. This 137// reduces the number of weak definitions generated in programs that use 138// iostreams by providing a single strong definition in the shared library. 139# define _LIBCPP_ABI_ENABLE_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 140#endif 141 142#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y 143#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) 144 145#ifndef _LIBCPP_ABI_NAMESPACE 146# define _LIBCPP_ABI_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION) 147#endif 148 149#if __cplusplus < 201103L 150#define _LIBCPP_CXX03_LANG 151#endif 152 153#ifndef __has_attribute 154#define __has_attribute(__x) 0 155#endif 156 157#ifndef __has_builtin 158#define __has_builtin(__x) 0 159#endif 160 161#ifndef __has_extension 162#define __has_extension(__x) 0 163#endif 164 165#ifndef __has_feature 166#define __has_feature(__x) 0 167#endif 168 169#ifndef __has_cpp_attribute 170#define __has_cpp_attribute(__x) 0 171#endif 172 173// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by 174// the compiler and '1' otherwise. 175#ifndef __is_identifier 176#define __is_identifier(__x) 1 177#endif 178 179#ifndef __has_declspec_attribute 180#define __has_declspec_attribute(__x) 0 181#endif 182 183#define __has_keyword(__x) !(__is_identifier(__x)) 184 185#ifndef __has_include 186#define __has_include(...) 0 187#endif 188 189#if defined(__apple_build_version__) 190# define _LIBCPP_COMPILER_CLANG_BASED 191# define _LIBCPP_APPLE_CLANG_VER (__apple_build_version__ / 10000) 192#elif defined(__clang__) 193# define _LIBCPP_COMPILER_CLANG_BASED 194# define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__) 195#elif defined(__GNUC__) 196# define _LIBCPP_COMPILER_GCC 197#elif defined(_MSC_VER) 198# define _LIBCPP_COMPILER_MSVC 199#elif defined(__IBMCPP__) 200# define _LIBCPP_COMPILER_IBM 201#endif 202 203#if defined(_LIBCPP_COMPILER_GCC) && __cplusplus < 201103L 204#error "libc++ does not support using GCC with C++03. Please enable C++11" 205#endif 206 207// FIXME: ABI detection should be done via compiler builtin macros. This 208// is just a placeholder until Clang implements such macros. For now assume 209// that Windows compilers pretending to be MSVC++ target the Microsoft ABI, 210// and allow the user to explicitly specify the ABI to handle cases where this 211// heuristic falls short. 212#if defined(_LIBCPP_ABI_FORCE_ITANIUM) && defined(_LIBCPP_ABI_FORCE_MICROSOFT) 213# error "Only one of _LIBCPP_ABI_FORCE_ITANIUM and _LIBCPP_ABI_FORCE_MICROSOFT can be defined" 214#elif defined(_LIBCPP_ABI_FORCE_ITANIUM) 215# define _LIBCPP_ABI_ITANIUM 216#elif defined(_LIBCPP_ABI_FORCE_MICROSOFT) 217# define _LIBCPP_ABI_MICROSOFT 218#else 219# if defined(_WIN32) && defined(_MSC_VER) 220# define _LIBCPP_ABI_MICROSOFT 221# else 222# define _LIBCPP_ABI_ITANIUM 223# endif 224#endif 225 226#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_NO_VCRUNTIME) 227# define _LIBCPP_ABI_VCRUNTIME 228#endif 229 230// Need to detect which libc we're using if we're on Linux. 231#if defined(__linux__) 232# include <features.h> 233# if defined(__GLIBC_PREREQ) 234# define _LIBCPP_GLIBC_PREREQ(a, b) __GLIBC_PREREQ(a, b) 235# else 236# define _LIBCPP_GLIBC_PREREQ(a, b) 0 237# endif // defined(__GLIBC_PREREQ) 238#endif // defined(__linux__) 239 240#ifdef __LITTLE_ENDIAN__ 241# if __LITTLE_ENDIAN__ 242# define _LIBCPP_LITTLE_ENDIAN 243# endif // __LITTLE_ENDIAN__ 244#endif // __LITTLE_ENDIAN__ 245 246#ifdef __BIG_ENDIAN__ 247# if __BIG_ENDIAN__ 248# define _LIBCPP_BIG_ENDIAN 249# endif // __BIG_ENDIAN__ 250#endif // __BIG_ENDIAN__ 251 252#ifdef __BYTE_ORDER__ 253# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 254# define _LIBCPP_LITTLE_ENDIAN 255# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 256# define _LIBCPP_BIG_ENDIAN 257# endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 258#endif // __BYTE_ORDER__ 259 260#ifdef __FreeBSD__ 261# include <sys/endian.h> 262# include <osreldate.h> 263# if _BYTE_ORDER == _LITTLE_ENDIAN 264# define _LIBCPP_LITTLE_ENDIAN 265# else // _BYTE_ORDER == _LITTLE_ENDIAN 266# define _LIBCPP_BIG_ENDIAN 267# endif // _BYTE_ORDER == _LITTLE_ENDIAN 268# ifndef __LONG_LONG_SUPPORTED 269# define _LIBCPP_HAS_NO_LONG_LONG 270# endif // __LONG_LONG_SUPPORTED 271#endif // __FreeBSD__ 272 273#if defined(__NetBSD__) || defined(__OpenBSD__) 274# include <sys/endian.h> 275# if _BYTE_ORDER == _LITTLE_ENDIAN 276# define _LIBCPP_LITTLE_ENDIAN 277# else // _BYTE_ORDER == _LITTLE_ENDIAN 278# define _LIBCPP_BIG_ENDIAN 279# endif // _BYTE_ORDER == _LITTLE_ENDIAN 280#endif // defined(__NetBSD__) || defined(__OpenBSD__) 281 282#if defined(_WIN32) 283# define _LIBCPP_WIN32API 284# define _LIBCPP_LITTLE_ENDIAN 285# define _LIBCPP_SHORT_WCHAR 1 286// Both MinGW and native MSVC provide a "MSVC"-like environment 287# define _LIBCPP_MSVCRT_LIKE 288// If mingw not explicitly detected, assume using MS C runtime only if 289// a MS compatibility version is specified. 290# if defined(_MSC_VER) && !defined(__MINGW32__) 291# define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 292# endif 293# if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 294# define _LIBCPP_HAS_BITSCAN64 295# endif 296# define _LIBCPP_HAS_OPEN_WITH_WCHAR 297# if defined(_LIBCPP_MSVCRT) 298# define _LIBCPP_HAS_QUICK_EXIT 299# endif 300 301// Some CRT APIs are unavailable to store apps 302# if defined(WINAPI_FAMILY) 303# include <winapifamily.h> 304# if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 305 (!defined(WINAPI_PARTITION_SYSTEM) || \ 306 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 307# define _LIBCPP_WINDOWS_STORE_APP 308# endif 309# endif 310#endif // defined(_WIN32) 311 312#ifdef __sun__ 313# include <sys/isa_defs.h> 314# ifdef _LITTLE_ENDIAN 315# define _LIBCPP_LITTLE_ENDIAN 316# else 317# define _LIBCPP_BIG_ENDIAN 318# endif 319#endif // __sun__ 320 321#if defined(__OpenBSD__) || defined(__CloudABI__) 322 // Certain architectures provide arc4random(). Prefer using 323 // arc4random() over /dev/{u,}random to make it possible to obtain 324 // random data even when using sandboxing mechanisms such as chroots, 325 // Capsicum, etc. 326# define _LIBCPP_USING_ARC4_RANDOM 327#elif defined(__Fuchsia__) || defined(__wasi__) 328# define _LIBCPP_USING_GETENTROPY 329#elif defined(__native_client__) 330 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, 331 // including accesses to the special files under /dev. C++11's 332 // std::random_device is instead exposed through a NaCl syscall. 333# define _LIBCPP_USING_NACL_RANDOM 334#elif defined(_LIBCPP_WIN32API) 335# define _LIBCPP_USING_WIN32_RANDOM 336#else 337# define _LIBCPP_USING_DEV_RANDOM 338#endif 339 340#if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 341# include <endian.h> 342# if __BYTE_ORDER == __LITTLE_ENDIAN 343# define _LIBCPP_LITTLE_ENDIAN 344# elif __BYTE_ORDER == __BIG_ENDIAN 345# define _LIBCPP_BIG_ENDIAN 346# else // __BYTE_ORDER == __BIG_ENDIAN 347# error unable to determine endian 348# endif 349#endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 350 351#if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 352# define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 353#else 354# define _LIBCPP_NO_CFI 355#endif 356 357// If the compiler supports using_if_exists, pretend we have those functions and they'll 358// be picked up if the C library provides them. 359// 360// TODO: Once we drop support for Clang 12, we can assume the compiler supports using_if_exists 361// for platforms that don't have a conforming C11 library, so we can drop this whole thing. 362#if __has_attribute(using_if_exists) 363# define _LIBCPP_HAS_TIMESPEC_GET 364# define _LIBCPP_HAS_QUICK_EXIT 365# define _LIBCPP_HAS_ALIGNED_ALLOC 366#else 367#if (defined(__ISO_C_VISIBLE) && (__ISO_C_VISIBLE >= 2011)) || __cplusplus >= 201103L 368# if defined(__FreeBSD__) 369# define _LIBCPP_HAS_ALIGNED_ALLOC 370# define _LIBCPP_HAS_QUICK_EXIT 371# if __FreeBSD_version >= 1300064 || \ 372 (__FreeBSD_version >= 1201504 && __FreeBSD_version < 1300000) 373# define _LIBCPP_HAS_TIMESPEC_GET 374# endif 375# elif defined(__BIONIC__) 376# if __ANDROID_API__ >= 21 377# define _LIBCPP_HAS_QUICK_EXIT 378# endif 379# if __ANDROID_API__ >= 28 380# define _LIBCPP_HAS_ALIGNED_ALLOC 381# endif 382# if __ANDROID_API__ >= 29 383# define _LIBCPP_HAS_TIMESPEC_GET 384# endif 385# elif defined(__Fuchsia__) || defined(__wasi__) || defined(__NetBSD__) 386# define _LIBCPP_HAS_ALIGNED_ALLOC 387# define _LIBCPP_HAS_QUICK_EXIT 388# define _LIBCPP_HAS_TIMESPEC_GET 389# elif defined(__OpenBSD__) 390# define _LIBCPP_HAS_ALIGNED_ALLOC 391# define _LIBCPP_HAS_TIMESPEC_GET 392# elif defined(__linux__) 393# if !defined(_LIBCPP_HAS_MUSL_LIBC) 394# if _LIBCPP_GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 395# define _LIBCPP_HAS_QUICK_EXIT 396# endif 397# if _LIBCPP_GLIBC_PREREQ(2, 17) 398# define _LIBCPP_HAS_ALIGNED_ALLOC 399# define _LIBCPP_HAS_TIMESPEC_GET 400# endif 401# else // defined(_LIBCPP_HAS_MUSL_LIBC) 402# define _LIBCPP_HAS_ALIGNED_ALLOC 403# define _LIBCPP_HAS_QUICK_EXIT 404# define _LIBCPP_HAS_TIMESPEC_GET 405# endif 406# elif defined(_LIBCPP_MSVCRT) 407 // Using Microsoft's C Runtime library, not MinGW 408# define _LIBCPP_HAS_TIMESPEC_GET 409# elif defined(__APPLE__) 410 // timespec_get and aligned_alloc were introduced in macOS 10.15 and 411 // aligned releases 412# if ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 101500) || \ 413 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ >= 130000) || \ 414 (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ >= 130000) || \ 415 (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ >= 60000)) 416# define _LIBCPP_HAS_ALIGNED_ALLOC 417# define _LIBCPP_HAS_TIMESPEC_GET 418# endif 419# endif // __APPLE__ 420#endif 421#endif // __has_attribute(using_if_exists) 422 423#ifndef _LIBCPP_CXX03_LANG 424# define _LIBCPP_ALIGNOF(_Tp) alignof(_Tp) 425#elif defined(_LIBCPP_COMPILER_CLANG_BASED) 426# define _LIBCPP_ALIGNOF(_Tp) _Alignof(_Tp) 427#else 428# error "We don't know a correct way to implement alignof(T) in C++03 outside of Clang" 429#endif 430 431#define _LIBCPP_PREFERRED_ALIGNOF(_Tp) __alignof(_Tp) 432 433#if defined(_LIBCPP_COMPILER_CLANG_BASED) 434 435#if defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 436# error _LIBCPP_ALTERNATE_STRING_LAYOUT is deprecated, please use _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT instead 437#endif 438#if defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 439 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2) 440# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 441#endif 442 443#if __has_feature(cxx_alignas) 444# define _ALIGNAS_TYPE(x) alignas(x) 445# define _ALIGNAS(x) alignas(x) 446#else 447# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 448# define _ALIGNAS(x) __attribute__((__aligned__(x))) 449#endif 450 451#if __cplusplus < 201103L 452typedef __char16_t char16_t; 453typedef __char32_t char32_t; 454#endif 455 456#if !__has_feature(cxx_exceptions) 457# define _LIBCPP_NO_EXCEPTIONS 458#endif 459 460#if !(__has_feature(cxx_strong_enums)) 461#define _LIBCPP_HAS_NO_STRONG_ENUMS 462#endif 463 464#if __has_feature(cxx_attributes) 465# define _LIBCPP_NORETURN [[noreturn]] 466#else 467# define _LIBCPP_NORETURN __attribute__ ((noreturn)) 468#endif 469 470#if !(__has_feature(cxx_nullptr)) 471# if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 472# define nullptr __nullptr 473# else 474# define _LIBCPP_HAS_NO_NULLPTR 475# endif 476#endif 477 478// Objective-C++ features (opt-in) 479#if __has_feature(objc_arc) 480#define _LIBCPP_HAS_OBJC_ARC 481#endif 482 483#if __has_feature(objc_arc_weak) 484#define _LIBCPP_HAS_OBJC_ARC_WEAK 485#endif 486 487#if __has_extension(blocks) 488# define _LIBCPP_HAS_EXTENSION_BLOCKS 489#endif 490 491#if defined(_LIBCPP_HAS_EXTENSION_BLOCKS) && defined(__APPLE__) 492# define _LIBCPP_HAS_BLOCKS_RUNTIME 493#endif 494 495#if !(__has_feature(cxx_relaxed_constexpr)) 496#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 497#endif 498 499#if !(__has_feature(cxx_variable_templates)) 500#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 501#endif 502 503#if !(__has_feature(cxx_noexcept)) 504#define _LIBCPP_HAS_NO_NOEXCEPT 505#endif 506 507#if !__has_feature(address_sanitizer) 508#define _LIBCPP_HAS_NO_ASAN 509#endif 510 511// Allow for build-time disabling of unsigned integer sanitization 512#if __has_attribute(no_sanitize) 513#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 514#endif 515 516#if __has_builtin(__builtin_launder) 517#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 518#endif 519 520#if __has_builtin(__builtin_constant_p) 521#define _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 522#endif 523 524#if !__is_identifier(__has_unique_object_representations) 525#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 526#endif 527 528#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 529 530// Literal operators ""d and ""y are supported starting with LLVM Clang 8 and AppleClang 10.0.1 531#if (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 800) || \ 532 (defined(_LIBCPP_APPLE_CLANG_VER) && _LIBCPP_APPLE_CLANG_VER < 1001) 533#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS 534#endif 535 536#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 537 538#elif defined(_LIBCPP_COMPILER_GCC) 539 540#define _ALIGNAS(x) __attribute__((__aligned__(x))) 541#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 542 543#define _LIBCPP_NORETURN __attribute__((noreturn)) 544 545#if !defined(__EXCEPTIONS) 546# define _LIBCPP_NO_EXCEPTIONS 547#endif 548 549// Determine if GCC supports relaxed constexpr 550#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 551#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 552#endif 553 554// GCC 5 supports variable templates 555#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 556#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 557#endif 558 559#if !defined(__SANITIZE_ADDRESS__) 560#define _LIBCPP_HAS_NO_ASAN 561#endif 562 563#if _GNUC_VER >= 700 564#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 565#define _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 566#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 567#endif 568 569#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 570 571#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 572 573#elif defined(_LIBCPP_COMPILER_MSVC) 574 575#define _LIBCPP_TOSTRING2(x) #x 576#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 577#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 578 579#if _MSC_VER < 1900 580#error "MSVC versions prior to Visual Studio 2015 are not supported" 581#endif 582 583#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 584#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 585#define __alignof__ __alignof 586#define _LIBCPP_NORETURN __declspec(noreturn) 587#define _ALIGNAS(x) __declspec(align(x)) 588#define _ALIGNAS_TYPE(x) alignas(x) 589 590#define _LIBCPP_WEAK 591 592#define _LIBCPP_HAS_NO_ASAN 593 594#define _LIBCPP_ALWAYS_INLINE __forceinline 595 596#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 597 598#define _LIBCPP_DISABLE_EXTENSION_WARNING 599 600#elif defined(_LIBCPP_COMPILER_IBM) 601 602#define _ALIGNAS(x) __attribute__((__aligned__(x))) 603#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 604#define _ATTRIBUTE(x) __attribute__((x)) 605#define _LIBCPP_NORETURN __attribute__((noreturn)) 606 607#define _LIBCPP_HAS_NO_UNICODE_CHARS 608#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 609 610#if defined(_AIX) 611#define __MULTILOCALE_API 612#endif 613 614#define _LIBCPP_HAS_NO_ASAN 615 616#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 617 618#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 619 620#define _LIBCPP_DISABLE_EXTENSION_WARNING 621 622#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 623 624#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 625 626#ifdef _DLL 627# define _LIBCPP_CRT_FUNC __declspec(dllimport) 628#else 629# define _LIBCPP_CRT_FUNC 630#endif 631 632#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 633# define _LIBCPP_DLL_VIS 634# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 635# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 636# define _LIBCPP_OVERRIDABLE_FUNC_VIS 637# define _LIBCPP_EXPORTED_FROM_ABI 638#elif defined(_LIBCPP_BUILDING_LIBRARY) 639# define _LIBCPP_DLL_VIS __declspec(dllexport) 640# if defined(__MINGW32__) 641# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 642# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 643# else 644# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 645# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 646# endif 647# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 648# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 649#else 650# define _LIBCPP_DLL_VIS __declspec(dllimport) 651# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 652# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 653# define _LIBCPP_OVERRIDABLE_FUNC_VIS 654# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 655#endif 656 657#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 658#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 659#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 660#define _LIBCPP_HIDDEN 661#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 662#define _LIBCPP_TEMPLATE_VIS 663#define _LIBCPP_TEMPLATE_DATA_VIS 664#define _LIBCPP_ENUM_VIS 665 666#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 667 668#ifndef _LIBCPP_HIDDEN 669# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 670# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 671# else 672# define _LIBCPP_HIDDEN 673# endif 674#endif 675 676#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 677# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 678// The inline should be removed once PR32114 is resolved 679# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 680# else 681# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 682# endif 683#endif 684 685#ifndef _LIBCPP_FUNC_VIS 686# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 687# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 688# else 689# define _LIBCPP_FUNC_VIS 690# endif 691#endif 692 693#ifndef _LIBCPP_TYPE_VIS 694# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 695# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 696# else 697# define _LIBCPP_TYPE_VIS 698# endif 699#endif 700 701#ifndef _LIBCPP_TEMPLATE_VIS 702# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 703# if __has_attribute(__type_visibility__) 704# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 705# else 706# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 707# endif 708# else 709# define _LIBCPP_TEMPLATE_VIS 710# endif 711#endif 712 713#ifndef _LIBCPP_TEMPLATE_DATA_VIS 714# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 715# define _LIBCPP_TEMPLATE_DATA_VIS __attribute__ ((__visibility__("default"))) 716# else 717# define _LIBCPP_TEMPLATE_DATA_VIS 718# endif 719#endif 720 721#ifndef _LIBCPP_EXPORTED_FROM_ABI 722# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 723# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 724# else 725# define _LIBCPP_EXPORTED_FROM_ABI 726# endif 727#endif 728 729#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 730#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 731#endif 732 733#ifndef _LIBCPP_EXCEPTION_ABI 734# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 735# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 736# else 737# define _LIBCPP_EXCEPTION_ABI 738# endif 739#endif 740 741#ifndef _LIBCPP_ENUM_VIS 742# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 743# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 744# else 745# define _LIBCPP_ENUM_VIS 746# endif 747#endif 748 749#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 750# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 751# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 752# else 753# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 754# endif 755#endif 756 757#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 758#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 759#endif 760 761#if __has_attribute(internal_linkage) 762# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 763#else 764# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 765#endif 766 767#if __has_attribute(exclude_from_explicit_instantiation) 768# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 769#else 770 // Try to approximate the effect of exclude_from_explicit_instantiation 771 // (which is that entities are not assumed to be provided by explicit 772 // template instantiations in the dylib) by always inlining those entities. 773# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 774#endif 775 776#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 777# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 778# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 779# else 780# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 781# endif 782#endif 783 784#ifndef _LIBCPP_HIDE_FROM_ABI 785# if _LIBCPP_HIDE_FROM_ABI_PER_TU 786# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 787# else 788# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 789# endif 790#endif 791 792#ifdef _LIBCPP_BUILDING_LIBRARY 793# if _LIBCPP_ABI_VERSION > 1 794# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 795# else 796# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 797# endif 798#else 799# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 800#endif 801 802// Just so we can migrate to the new macros gradually. 803#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 804 805// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 806#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 807#define _LIBCPP_END_NAMESPACE_STD } } 808#define _VSTD std::_LIBCPP_ABI_NAMESPACE 809_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 810 811#if _LIBCPP_STD_VER >= 17 812#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 813 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 814#else 815#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 816 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 817#endif 818 819#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 820 _LIBCPP_END_NAMESPACE_STD } } 821 822#define _VSTD_FS _VSTD::__fs::filesystem 823 824#if __has_attribute(__enable_if__) 825# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 826#endif 827 828#ifndef _LIBCPP_HAS_NO_NOEXCEPT 829# define _NOEXCEPT noexcept 830# define _NOEXCEPT_(x) noexcept(x) 831#else 832# define _NOEXCEPT throw() 833# define _NOEXCEPT_(x) 834#endif 835 836#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 837typedef unsigned short char16_t; 838typedef unsigned int char32_t; 839#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 840 841#ifndef __SIZEOF_INT128__ 842#define _LIBCPP_HAS_NO_INT128 843#endif 844 845#ifdef _LIBCPP_CXX03_LANG 846# define static_assert(...) _Static_assert(__VA_ARGS__) 847# define decltype(...) __decltype(__VA_ARGS__) 848#endif // _LIBCPP_CXX03_LANG 849 850#ifdef _LIBCPP_CXX03_LANG 851# define _LIBCPP_CONSTEXPR 852#else 853# define _LIBCPP_CONSTEXPR constexpr 854#endif 855 856#ifndef __cpp_consteval 857# define _LIBCPP_CONSTEVAL _LIBCPP_CONSTEXPR 858#else 859# define _LIBCPP_CONSTEVAL consteval 860#endif 861 862#if !defined(__cpp_concepts) || __cpp_concepts < 201907L 863#define _LIBCPP_HAS_NO_CONCEPTS 864#endif 865 866#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_HAS_NO_CONCEPTS) 867#define _LIBCPP_HAS_NO_RANGES 868#endif 869 870#ifdef _LIBCPP_CXX03_LANG 871# define _LIBCPP_DEFAULT {} 872#else 873# define _LIBCPP_DEFAULT = default; 874#endif 875 876#ifdef _LIBCPP_CXX03_LANG 877# define _LIBCPP_EQUAL_DELETE 878#else 879# define _LIBCPP_EQUAL_DELETE = delete 880#endif 881 882#ifdef __GNUC__ 883# define _LIBCPP_NOALIAS __attribute__((__malloc__)) 884#else 885# define _LIBCPP_NOALIAS 886#endif 887 888#if __has_attribute(using_if_exists) 889# define _LIBCPP_USING_IF_EXISTS __attribute__((using_if_exists)) 890#else 891# define _LIBCPP_USING_IF_EXISTS 892#endif 893 894#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 895# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 896# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 897 __lx __v_; \ 898 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 899 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 900 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 901 }; 902#else // _LIBCPP_HAS_NO_STRONG_ENUMS 903# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 904# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 905#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 906 907// _LIBCPP_DEBUG potential values: 908// - undefined: No assertions. This is the default. 909// - 0: Basic assertions 910// - 1: Basic assertions + iterator validity checks. 911#if !defined(_LIBCPP_DEBUG) 912# define _LIBCPP_DEBUG_LEVEL 0 913#elif _LIBCPP_DEBUG == 0 914# define _LIBCPP_DEBUG_LEVEL 1 915#elif _LIBCPP_DEBUG == 1 916# define _LIBCPP_DEBUG_LEVEL 2 917#else 918# error Supported values for _LIBCPP_DEBUG are 0 and 1 919#endif 920 921// Libc++ allows disabling extern template instantiation declarations by 922// means of users defining _LIBCPP_DISABLE_EXTERN_TEMPLATE. 923// 924// Furthermore, when the Debug mode is enabled, we disable extern declarations 925// when building user code because we don't want to use the functions compiled 926// in the library, which might not have had the debug mode enabled when built. 927// However, some extern declarations need to be used, because code correctness 928// depends on it (several instances in <locale>). Those special declarations 929// are declared with _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE, which is enabled 930// even when the debug mode is enabled. 931#if defined(_LIBCPP_DISABLE_EXTERN_TEMPLATE) 932# define _LIBCPP_EXTERN_TEMPLATE(...) /* nothing */ 933# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) /* nothing */ 934#elif _LIBCPP_DEBUG_LEVEL >= 1 && !defined(_LIBCPP_BUILDING_LIBRARY) 935# define _LIBCPP_EXTERN_TEMPLATE(...) /* nothing */ 936# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) extern template __VA_ARGS__; 937#else 938# define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 939# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) extern template __VA_ARGS__; 940#endif 941 942#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 943 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 944#define _LIBCPP_LOCALE__L_EXTENSIONS 1 945#endif 946 947#ifdef __FreeBSD__ 948#define _DECLARE_C99_LDBL_MATH 1 949#endif 950 951// If we are getting operator new from the MSVC CRT, then allocation overloads 952// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 953#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 954# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 955#elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) 956 // We're deferring to Microsoft's STL to provide aligned new et al. We don't 957 // have it unless the language feature test macro is defined. 958# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 959#elif defined(__MVS__) 960# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 961#endif 962 963#if defined(__APPLE__) 964# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 965 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 966# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 967# endif 968#endif // defined(__APPLE__) 969 970#if defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 971 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606) 972# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 973#endif 974 975#if defined(__APPLE__) || defined(__FreeBSD__) 976#define _LIBCPP_HAS_DEFAULTRUNELOCALE 977#endif 978 979#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 980#define _LIBCPP_WCTYPE_IS_MASK 981#endif 982 983#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) 984#define _LIBCPP_HAS_NO_CHAR8_T 985#endif 986 987// Deprecation macros. 988// 989// Deprecations warnings are always enabled, except when users explicitly opt-out 990// by defining _LIBCPP_DISABLE_DEPRECATION_WARNINGS. 991#if !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) 992# if __has_attribute(deprecated) 993# define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 994# elif _LIBCPP_STD_VER > 11 995# define _LIBCPP_DEPRECATED [[deprecated]] 996# else 997# define _LIBCPP_DEPRECATED 998# endif 999#else 1000# define _LIBCPP_DEPRECATED 1001#endif 1002 1003#if !defined(_LIBCPP_CXX03_LANG) 1004# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 1005#else 1006# define _LIBCPP_DEPRECATED_IN_CXX11 1007#endif 1008 1009#if _LIBCPP_STD_VER >= 14 1010# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 1011#else 1012# define _LIBCPP_DEPRECATED_IN_CXX14 1013#endif 1014 1015#if _LIBCPP_STD_VER >= 17 1016# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 1017#else 1018# define _LIBCPP_DEPRECATED_IN_CXX17 1019#endif 1020 1021#if _LIBCPP_STD_VER > 17 1022# define _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_DEPRECATED 1023#else 1024# define _LIBCPP_DEPRECATED_IN_CXX20 1025#endif 1026 1027#if !defined(_LIBCPP_HAS_NO_CHAR8_T) 1028# define _LIBCPP_DEPRECATED_WITH_CHAR8_T _LIBCPP_DEPRECATED 1029#else 1030# define _LIBCPP_DEPRECATED_WITH_CHAR8_T 1031#endif 1032 1033// Macros to enter and leave a state where deprecation warnings are suppressed. 1034#if defined(_LIBCPP_COMPILER_CLANG_BASED) || defined(_LIBCPP_COMPILER_GCC) 1035# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \ 1036 _Pragma("GCC diagnostic push") \ 1037 _Pragma("GCC diagnostic ignored \"-Wdeprecated\"") \ 1038 _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") 1039# define _LIBCPP_SUPPRESS_DEPRECATED_POP \ 1040 _Pragma("GCC diagnostic pop") 1041#else 1042# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH 1043# define _LIBCPP_SUPPRESS_DEPRECATED_POP 1044#endif 1045 1046#if _LIBCPP_STD_VER <= 11 1047# define _LIBCPP_EXPLICIT_AFTER_CXX11 1048#else 1049# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1050#endif 1051 1052#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1053# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1054#else 1055# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1056#endif 1057 1058#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1059# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1060#else 1061# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1062#endif 1063 1064#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1065# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1066#else 1067# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1068#endif 1069 1070// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 1071// NODISCARD macros to the correct attribute. 1072#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1073# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 1074#elif defined(_LIBCPP_COMPILER_CLANG_BASED) && !defined(_LIBCPP_CXX03_LANG) 1075# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 1076#else 1077// We can't use GCC's [[gnu::warn_unused_result]] and 1078// __attribute__((warn_unused_result)), because GCC does not silence them via 1079// (void) cast. 1080# define _LIBCPP_NODISCARD_ATTRIBUTE 1081#endif 1082 1083// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1084// specified as such as an extension. 1085#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1086# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1087#else 1088# define _LIBCPP_NODISCARD_EXT 1089#endif 1090 1091#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1092 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1093# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1094#else 1095# define _LIBCPP_NODISCARD_AFTER_CXX17 1096#endif 1097 1098#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1099# define _LIBCPP_INLINE_VAR inline 1100#else 1101# define _LIBCPP_INLINE_VAR 1102#endif 1103 1104#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1105# define _LIBCPP_CONSTEXPR_IF_NODEBUG 1106#else 1107# define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1108#endif 1109 1110#if __has_attribute(no_destroy) 1111# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__)) 1112#else 1113# define _LIBCPP_NO_DESTROY 1114#endif 1115 1116#ifndef _LIBCPP_HAS_NO_ASAN 1117extern "C" _LIBCPP_FUNC_VIS void __sanitizer_annotate_contiguous_container( 1118 const void *, const void *, const void *, const void *); 1119#endif 1120 1121// Try to find out if RTTI is disabled. 1122#if defined(_LIBCPP_COMPILER_CLANG_BASED) && !__has_feature(cxx_rtti) 1123# define _LIBCPP_NO_RTTI 1124#elif defined(__GNUC__) && !defined(__GXX_RTTI) 1125# define _LIBCPP_NO_RTTI 1126#elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1127# define _LIBCPP_NO_RTTI 1128#endif 1129 1130#ifndef _LIBCPP_WEAK 1131#define _LIBCPP_WEAK __attribute__((__weak__)) 1132#endif 1133 1134// Thread API 1135#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1136 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1137 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1138 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1139# if defined(__FreeBSD__) || \ 1140 defined(__wasi__) || \ 1141 defined(__NetBSD__) || \ 1142 defined(__OpenBSD__) || \ 1143 defined(__NuttX__) || \ 1144 defined(__linux__) || \ 1145 defined(__GNU__) || \ 1146 defined(__APPLE__) || \ 1147 defined(__CloudABI__) || \ 1148 defined(__sun__) || \ 1149 defined(__MVS__) || \ 1150 defined(_AIX) || \ 1151 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1152# define _LIBCPP_HAS_THREAD_API_PTHREAD 1153# elif defined(__Fuchsia__) 1154 // TODO(44575): Switch to C11 thread API when possible. 1155# define _LIBCPP_HAS_THREAD_API_PTHREAD 1156# elif defined(_LIBCPP_WIN32API) 1157# define _LIBCPP_HAS_THREAD_API_WIN32 1158# else 1159# error "No thread API" 1160# endif // _LIBCPP_HAS_THREAD_API 1161#endif // _LIBCPP_HAS_NO_THREADS 1162 1163#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1164#if defined(__ANDROID__) && __ANDROID_API__ >= 30 1165#define _LIBCPP_HAS_COND_CLOCKWAIT 1166#elif defined(_LIBCPP_GLIBC_PREREQ) 1167#if _LIBCPP_GLIBC_PREREQ(2, 30) 1168#define _LIBCPP_HAS_COND_CLOCKWAIT 1169#endif 1170#endif 1171#endif 1172 1173#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1174#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1175 _LIBCPP_HAS_NO_THREADS is not defined. 1176#endif 1177 1178#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1179#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1180 _LIBCPP_HAS_NO_THREADS is defined. 1181#endif 1182 1183#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1184#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1185 _LIBCPP_HAS_NO_THREADS is defined. 1186#endif 1187 1188#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(__STDCPP_THREADS__) 1189#define __STDCPP_THREADS__ 1 1190#endif 1191 1192// The glibc and Bionic implementation of pthreads implements 1193// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 1194// mutexes have no destroy mechanism. 1195// 1196// This optimization can't be performed on Apple platforms, where 1197// pthread_mutex_destroy can allow the kernel to release resources. 1198// See https://llvm.org/D64298 for details. 1199// 1200// TODO(EricWF): Enable this optimization on Bionic after speaking to their 1201// respective stakeholders. 1202#if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) \ 1203 || (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) \ 1204 || defined(_LIBCPP_HAS_THREAD_API_WIN32) 1205# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 1206#endif 1207 1208// Destroying a condvar is a nop on Windows. 1209// 1210// This optimization can't be performed on Apple platforms, where 1211// pthread_cond_destroy can allow the kernel to release resources. 1212// See https://llvm.org/D64298 for details. 1213// 1214// TODO(EricWF): This is potentially true for some pthread implementations 1215// as well. 1216#if (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) || \ 1217 defined(_LIBCPP_HAS_THREAD_API_WIN32) 1218# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 1219#endif 1220 1221// Systems that use capability-based security (FreeBSD with Capsicum, 1222// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1223// Functions like open(), rename(), unlink() and stat() should not be 1224// used, as they attempt to access the global filesystem namespace. 1225#ifdef __CloudABI__ 1226#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1227#endif 1228 1229// CloudABI is intended for running networked services. Processes do not 1230// have standard input and output channels. 1231#ifdef __CloudABI__ 1232#define _LIBCPP_HAS_NO_STDIN 1233#define _LIBCPP_HAS_NO_STDOUT 1234#endif 1235 1236// Some systems do not provide gets() in their C library, for security reasons. 1237#if defined(_LIBCPP_MSVCRT) || \ 1238 (defined(__FreeBSD_version) && __FreeBSD_version >= 1300043) || \ 1239 defined(__OpenBSD__) 1240# define _LIBCPP_C_HAS_NO_GETS 1241#endif 1242 1243#if defined(__BIONIC__) || defined(__CloudABI__) || defined(__NuttX__) || \ 1244 defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC) || \ 1245 defined(__MVS__) || defined(__OpenBSD__) 1246#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1247#endif 1248 1249// Thread-unsafe functions such as strtok() and localtime() 1250// are not available. 1251#ifdef __CloudABI__ 1252#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1253#endif 1254 1255#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1256# define _LIBCPP_HAS_C_ATOMIC_IMP 1257#elif defined(_LIBCPP_COMPILER_GCC) 1258# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1259#endif 1260 1261#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && \ 1262 !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) && \ 1263 !defined(_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP)) \ 1264 || defined(_LIBCPP_HAS_NO_THREADS) 1265# define _LIBCPP_HAS_NO_ATOMIC_HEADER 1266#else 1267# ifndef _LIBCPP_ATOMIC_FLAG_TYPE 1268# define _LIBCPP_ATOMIC_FLAG_TYPE bool 1269# endif 1270# ifdef _LIBCPP_FREESTANDING 1271# define _LIBCPP_ATOMIC_ONLY_USE_BUILTINS 1272# endif 1273#endif 1274 1275#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1276#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1277#endif 1278 1279#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1280# if defined(__clang__) && __has_attribute(acquire_capability) 1281// Work around the attribute handling in clang. When both __declspec and 1282// __attribute__ are present, the processing goes awry preventing the definition 1283// of the types. 1284# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1285# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1286# endif 1287# endif 1288#endif 1289 1290#ifdef _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1291# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) __attribute__((x)) 1292#else 1293# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) 1294#endif 1295 1296#if __has_attribute(require_constant_initialization) 1297# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1298#else 1299# define _LIBCPP_SAFE_STATIC 1300#endif 1301 1302#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1303#define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1304#endif 1305 1306#if !__has_builtin(__builtin_is_constant_evaluated) && _GNUC_VER < 900 1307#define _LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED 1308#endif 1309 1310#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1311# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1312 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1313# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1314 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1315#else 1316# define _LIBCPP_DIAGNOSE_WARNING(...) 1317# define _LIBCPP_DIAGNOSE_ERROR(...) 1318#endif 1319 1320// Use a function like macro to imply that it must be followed by a semicolon 1321#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1322# define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1323#elif __has_cpp_attribute(clang::fallthrough) 1324# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1325#elif __has_attribute(fallthrough) || _GNUC_VER >= 700 1326# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1327#else 1328# define _LIBCPP_FALLTHROUGH() ((void)0) 1329#endif 1330 1331#if __has_attribute(__nodebug__) 1332#define _LIBCPP_NODEBUG __attribute__((__nodebug__)) 1333#else 1334#define _LIBCPP_NODEBUG 1335#endif 1336 1337#if __has_attribute(__nodebug__) && (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 900) 1338# define _LIBCPP_NODEBUG_TYPE __attribute__((nodebug)) 1339#else 1340# define _LIBCPP_NODEBUG_TYPE 1341#endif 1342 1343#if __has_attribute(__standalone_debug__) 1344#define _LIBCPP_STANDALONE_DEBUG __attribute__((__standalone_debug__)) 1345#else 1346#define _LIBCPP_STANDALONE_DEBUG 1347#endif 1348 1349#if __has_attribute(__preferred_name__) 1350#define _LIBCPP_PREFERRED_NAME(x) __attribute__((__preferred_name__(x))) 1351#else 1352#define _LIBCPP_PREFERRED_NAME(x) 1353#endif 1354 1355#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1356 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1357# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1358#else 1359# define _LIBCPP_DECLSPEC_EMPTY_BASES 1360#endif 1361 1362#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1363#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1364#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1365#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1366#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1367#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1368 1369#if defined(_LIBCPP_ENABLE_CXX20_REMOVED_FEATURES) 1370#define _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS 1371#define _LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS 1372#define _LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS 1373#define _LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR 1374#define _LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS 1375#endif // _LIBCPP_ENABLE_CXX20_REMOVED_FEATURES 1376 1377#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1378#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1379#endif 1380 1381#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1382#define _LIBCPP_HAS_NO_IS_AGGREGATE 1383#endif 1384 1385#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1386#define _LIBCPP_HAS_NO_COROUTINES 1387#endif 1388 1389#if !defined(__cpp_impl_three_way_comparison) || __cpp_impl_three_way_comparison < 201907L 1390#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1391#endif 1392 1393#if defined(_LIBCPP_COMPILER_IBM) 1394#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1395#endif 1396 1397#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1398# define _LIBCPP_PUSH_MACROS 1399# define _LIBCPP_POP_MACROS 1400#else 1401 // Don't warn about macro conflicts when we can restore them at the 1402 // end of the header. 1403# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1404# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1405# endif 1406# if defined(_LIBCPP_COMPILER_MSVC) 1407# define _LIBCPP_PUSH_MACROS \ 1408 __pragma(push_macro("min")) \ 1409 __pragma(push_macro("max")) 1410# define _LIBCPP_POP_MACROS \ 1411 __pragma(pop_macro("min")) \ 1412 __pragma(pop_macro("max")) 1413# else 1414# define _LIBCPP_PUSH_MACROS \ 1415 _Pragma("push_macro(\"min\")") \ 1416 _Pragma("push_macro(\"max\")") 1417# define _LIBCPP_POP_MACROS \ 1418 _Pragma("pop_macro(\"min\")") \ 1419 _Pragma("pop_macro(\"max\")") 1420# endif 1421#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1422 1423#ifndef _LIBCPP_NO_AUTO_LINK 1424# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1425# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 1426# pragma comment(lib, "c++.lib") 1427# else 1428# pragma comment(lib, "libc++.lib") 1429# endif 1430# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1431#endif // _LIBCPP_NO_AUTO_LINK 1432 1433// Configures the fopen close-on-exec mode character, if any. This string will 1434// be appended to any mode string used by fstream for fopen/fdopen. 1435// 1436// Not all platforms support this, but it helps avoid fd-leaks on platforms that 1437// do. 1438#if defined(__BIONIC__) 1439# define _LIBCPP_FOPEN_CLOEXEC_MODE "e" 1440#else 1441# define _LIBCPP_FOPEN_CLOEXEC_MODE 1442#endif 1443 1444#ifdef _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 1445#define _LIBCPP_BUILTIN_CONSTANT_P(x) __builtin_constant_p(x) 1446#else 1447#define _LIBCPP_BUILTIN_CONSTANT_P(x) false 1448#endif 1449 1450// Support for _FILE_OFFSET_BITS=64 landed gradually in Android, so the full set 1451// of functions used in cstdio may not be available for low API levels when 1452// using 64-bit file offsets on LP32. 1453#if defined(__BIONIC__) && defined(__USE_FILE_OFFSET64) && __ANDROID_API__ < 24 1454#define _LIBCPP_HAS_NO_FGETPOS_FSETPOS 1455#endif 1456 1457#if __has_attribute(init_priority) 1458# define _LIBCPP_INIT_PRIORITY_MAX __attribute__((init_priority(101))) 1459#else 1460# define _LIBCPP_INIT_PRIORITY_MAX 1461#endif 1462 1463#if defined(__GNUC__) || defined(__clang__) 1464#define _LIBCPP_FORMAT_PRINTF(a, b) \ 1465 __attribute__((__format__(__printf__, a, b))) 1466#else 1467#define _LIBCPP_FORMAT_PRINTF(a, b) 1468#endif 1469 1470#endif // __cplusplus 1471 1472#endif // _LIBCPP_CONFIG 1473