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 14000 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#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 525 526// Literal operators ""d and ""y are supported starting with LLVM Clang 8 and AppleClang 10.0.1 527#if (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 800) || \ 528 (defined(_LIBCPP_APPLE_CLANG_VER) && _LIBCPP_APPLE_CLANG_VER < 1001) 529#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS 530#endif 531 532#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 533 534#elif defined(_LIBCPP_COMPILER_GCC) 535 536#define _ALIGNAS(x) __attribute__((__aligned__(x))) 537#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 538 539#define _LIBCPP_NORETURN __attribute__((noreturn)) 540 541#if !defined(__EXCEPTIONS) 542# define _LIBCPP_NO_EXCEPTIONS 543#endif 544 545// Determine if GCC supports relaxed constexpr 546#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 547#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 548#endif 549 550// GCC 5 supports variable templates 551#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 552#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 553#endif 554 555#if !defined(__SANITIZE_ADDRESS__) 556#define _LIBCPP_HAS_NO_ASAN 557#endif 558 559#if _GNUC_VER >= 700 560#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 561#define _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 562#endif 563 564#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 565 566#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 567 568#elif defined(_LIBCPP_COMPILER_MSVC) 569 570#define _LIBCPP_TOSTRING2(x) #x 571#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 572#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 573 574#if _MSC_VER < 1900 575#error "MSVC versions prior to Visual Studio 2015 are not supported" 576#endif 577 578#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 579#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 580#define __alignof__ __alignof 581#define _LIBCPP_NORETURN __declspec(noreturn) 582#define _ALIGNAS(x) __declspec(align(x)) 583#define _ALIGNAS_TYPE(x) alignas(x) 584 585#define _LIBCPP_WEAK 586 587#define _LIBCPP_HAS_NO_ASAN 588 589#define _LIBCPP_ALWAYS_INLINE __forceinline 590 591#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 592 593#define _LIBCPP_DISABLE_EXTENSION_WARNING 594 595#elif defined(_LIBCPP_COMPILER_IBM) 596 597#define _ALIGNAS(x) __attribute__((__aligned__(x))) 598#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 599#define _ATTRIBUTE(x) __attribute__((x)) 600#define _LIBCPP_NORETURN __attribute__((noreturn)) 601 602#define _LIBCPP_HAS_NO_UNICODE_CHARS 603#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 604 605#if defined(_AIX) 606#define __MULTILOCALE_API 607#endif 608 609#define _LIBCPP_HAS_NO_ASAN 610 611#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 612 613#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 614 615#define _LIBCPP_DISABLE_EXTENSION_WARNING 616 617#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 618 619#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 620 621#ifdef _DLL 622# define _LIBCPP_CRT_FUNC __declspec(dllimport) 623#else 624# define _LIBCPP_CRT_FUNC 625#endif 626 627#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 628# define _LIBCPP_DLL_VIS 629# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 630# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 631# define _LIBCPP_OVERRIDABLE_FUNC_VIS 632# define _LIBCPP_EXPORTED_FROM_ABI 633#elif defined(_LIBCPP_BUILDING_LIBRARY) 634# define _LIBCPP_DLL_VIS __declspec(dllexport) 635# if defined(__MINGW32__) 636# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 637# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 638# else 639# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 640# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 641# endif 642# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 643# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 644#else 645# define _LIBCPP_DLL_VIS __declspec(dllimport) 646# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 647# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 648# define _LIBCPP_OVERRIDABLE_FUNC_VIS 649# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 650#endif 651 652#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 653#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 654#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 655#define _LIBCPP_HIDDEN 656#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 657#define _LIBCPP_TEMPLATE_VIS 658#define _LIBCPP_TEMPLATE_DATA_VIS 659#define _LIBCPP_ENUM_VIS 660 661#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 662 663#ifndef _LIBCPP_HIDDEN 664# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 665# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 666# else 667# define _LIBCPP_HIDDEN 668# endif 669#endif 670 671#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 672# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 673// The inline should be removed once PR32114 is resolved 674# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 675# else 676# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 677# endif 678#endif 679 680#ifndef _LIBCPP_FUNC_VIS 681# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 682# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 683# else 684# define _LIBCPP_FUNC_VIS 685# endif 686#endif 687 688#ifndef _LIBCPP_TYPE_VIS 689# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 690# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 691# else 692# define _LIBCPP_TYPE_VIS 693# endif 694#endif 695 696#ifndef _LIBCPP_TEMPLATE_VIS 697# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 698# if __has_attribute(__type_visibility__) 699# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 700# else 701# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 702# endif 703# else 704# define _LIBCPP_TEMPLATE_VIS 705# endif 706#endif 707 708#ifndef _LIBCPP_TEMPLATE_DATA_VIS 709# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 710# define _LIBCPP_TEMPLATE_DATA_VIS __attribute__ ((__visibility__("default"))) 711# else 712# define _LIBCPP_TEMPLATE_DATA_VIS 713# endif 714#endif 715 716#ifndef _LIBCPP_EXPORTED_FROM_ABI 717# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 718# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 719# else 720# define _LIBCPP_EXPORTED_FROM_ABI 721# endif 722#endif 723 724#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 725#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 726#endif 727 728#ifndef _LIBCPP_EXCEPTION_ABI 729# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 730# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 731# else 732# define _LIBCPP_EXCEPTION_ABI 733# endif 734#endif 735 736#ifndef _LIBCPP_ENUM_VIS 737# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 738# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 739# else 740# define _LIBCPP_ENUM_VIS 741# endif 742#endif 743 744#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 745# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 746# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 747# else 748# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 749# endif 750#endif 751 752#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 753#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 754#endif 755 756#if __has_attribute(internal_linkage) 757# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 758#else 759# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 760#endif 761 762#if __has_attribute(exclude_from_explicit_instantiation) 763# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 764#else 765 // Try to approximate the effect of exclude_from_explicit_instantiation 766 // (which is that entities are not assumed to be provided by explicit 767 // template instantiations in the dylib) by always inlining those entities. 768# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 769#endif 770 771#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 772# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 773# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 774# else 775# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 776# endif 777#endif 778 779#ifndef _LIBCPP_HIDE_FROM_ABI 780# if _LIBCPP_HIDE_FROM_ABI_PER_TU 781# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 782# else 783# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 784# endif 785#endif 786 787#ifdef _LIBCPP_BUILDING_LIBRARY 788# if _LIBCPP_ABI_VERSION > 1 789# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 790# else 791# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 792# endif 793#else 794# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 795#endif 796 797// Just so we can migrate to the new macros gradually. 798#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 799 800// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 801#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 802#define _LIBCPP_END_NAMESPACE_STD } } 803#define _VSTD std::_LIBCPP_ABI_NAMESPACE 804_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 805 806#if _LIBCPP_STD_VER >= 17 807#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 808 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 809#else 810#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 811 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 812#endif 813 814#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 815 _LIBCPP_END_NAMESPACE_STD } } 816 817#define _VSTD_FS _VSTD::__fs::filesystem 818 819#if __has_attribute(__enable_if__) 820# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 821#endif 822 823#ifndef _LIBCPP_HAS_NO_NOEXCEPT 824# define _NOEXCEPT noexcept 825# define _NOEXCEPT_(x) noexcept(x) 826#else 827# define _NOEXCEPT throw() 828# define _NOEXCEPT_(x) 829#endif 830 831#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 832typedef unsigned short char16_t; 833typedef unsigned int char32_t; 834#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 835 836#ifndef __SIZEOF_INT128__ 837#define _LIBCPP_HAS_NO_INT128 838#endif 839 840#ifdef _LIBCPP_CXX03_LANG 841# define static_assert(...) _Static_assert(__VA_ARGS__) 842# define decltype(...) __decltype(__VA_ARGS__) 843#endif // _LIBCPP_CXX03_LANG 844 845#ifdef _LIBCPP_CXX03_LANG 846# define _LIBCPP_CONSTEXPR 847#else 848# define _LIBCPP_CONSTEXPR constexpr 849#endif 850 851#ifndef __cpp_consteval 852# define _LIBCPP_CONSTEVAL _LIBCPP_CONSTEXPR 853#else 854# define _LIBCPP_CONSTEVAL consteval 855#endif 856 857#if !defined(__cpp_concepts) || __cpp_concepts < 201907L 858#define _LIBCPP_HAS_NO_CONCEPTS 859#endif 860 861#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_HAS_NO_CONCEPTS) 862#define _LIBCPP_HAS_NO_RANGES 863#endif 864 865#ifdef _LIBCPP_CXX03_LANG 866# define _LIBCPP_DEFAULT {} 867#else 868# define _LIBCPP_DEFAULT = default; 869#endif 870 871#ifdef _LIBCPP_CXX03_LANG 872# define _LIBCPP_EQUAL_DELETE 873#else 874# define _LIBCPP_EQUAL_DELETE = delete 875#endif 876 877#ifdef __GNUC__ 878# define _LIBCPP_NOALIAS __attribute__((__malloc__)) 879#else 880# define _LIBCPP_NOALIAS 881#endif 882 883#if __has_attribute(using_if_exists) 884# define _LIBCPP_USING_IF_EXISTS __attribute__((using_if_exists)) 885#else 886# define _LIBCPP_USING_IF_EXISTS 887#endif 888 889#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 890# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 891# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 892 __lx __v_; \ 893 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 894 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 895 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 896 }; 897#else // _LIBCPP_HAS_NO_STRONG_ENUMS 898# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 899# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 900#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 901 902// _LIBCPP_DEBUG potential values: 903// - undefined: No assertions. This is the default. 904// - 0: Basic assertions 905// - 1: Basic assertions + iterator validity checks. 906#if !defined(_LIBCPP_DEBUG) 907# define _LIBCPP_DEBUG_LEVEL 0 908#elif _LIBCPP_DEBUG == 0 909# define _LIBCPP_DEBUG_LEVEL 1 910#elif _LIBCPP_DEBUG == 1 911# define _LIBCPP_DEBUG_LEVEL 2 912#else 913# error Supported values for _LIBCPP_DEBUG are 0 and 1 914#endif 915 916// Libc++ allows disabling extern template instantiation declarations by 917// means of users defining _LIBCPP_DISABLE_EXTERN_TEMPLATE. 918// 919// Furthermore, when the Debug mode is enabled, we disable extern declarations 920// when building user code because we don't want to use the functions compiled 921// in the library, which might not have had the debug mode enabled when built. 922// However, some extern declarations need to be used, because code correctness 923// depends on it (several instances in <locale>). Those special declarations 924// are declared with _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE, which is enabled 925// even when the debug mode is enabled. 926#if defined(_LIBCPP_DISABLE_EXTERN_TEMPLATE) 927# define _LIBCPP_EXTERN_TEMPLATE(...) /* nothing */ 928# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) /* nothing */ 929#elif _LIBCPP_DEBUG_LEVEL >= 1 && !defined(_LIBCPP_BUILDING_LIBRARY) 930# define _LIBCPP_EXTERN_TEMPLATE(...) /* nothing */ 931# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) extern template __VA_ARGS__; 932#else 933# define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 934# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) extern template __VA_ARGS__; 935#endif 936 937#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 938 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 939#define _LIBCPP_LOCALE__L_EXTENSIONS 1 940#endif 941 942#ifdef __FreeBSD__ 943#define _DECLARE_C99_LDBL_MATH 1 944#endif 945 946// If we are getting operator new from the MSVC CRT, then allocation overloads 947// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 948#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 949# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 950#elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) 951 // We're deferring to Microsoft's STL to provide aligned new et al. We don't 952 // have it unless the language feature test macro is defined. 953# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 954#elif defined(__MVS__) 955# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 956#endif 957 958#if defined(__APPLE__) 959# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 960 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 961# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 962# endif 963#endif // defined(__APPLE__) 964 965#if defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 966 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606) 967# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 968#endif 969 970#if defined(__APPLE__) || defined(__FreeBSD__) 971#define _LIBCPP_HAS_DEFAULTRUNELOCALE 972#endif 973 974#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 975#define _LIBCPP_WCTYPE_IS_MASK 976#endif 977 978#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) 979#define _LIBCPP_HAS_NO_CHAR8_T 980#endif 981 982// Deprecation macros. 983// 984// Deprecations warnings are always enabled, except when users explicitly opt-out 985// by defining _LIBCPP_DISABLE_DEPRECATION_WARNINGS. 986#if !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) 987# if __has_attribute(deprecated) 988# define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 989# elif _LIBCPP_STD_VER > 11 990# define _LIBCPP_DEPRECATED [[deprecated]] 991# else 992# define _LIBCPP_DEPRECATED 993# endif 994#else 995# define _LIBCPP_DEPRECATED 996#endif 997 998#if !defined(_LIBCPP_CXX03_LANG) 999# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 1000#else 1001# define _LIBCPP_DEPRECATED_IN_CXX11 1002#endif 1003 1004#if _LIBCPP_STD_VER >= 14 1005# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 1006#else 1007# define _LIBCPP_DEPRECATED_IN_CXX14 1008#endif 1009 1010#if _LIBCPP_STD_VER >= 17 1011# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 1012#else 1013# define _LIBCPP_DEPRECATED_IN_CXX17 1014#endif 1015 1016#if _LIBCPP_STD_VER > 17 1017# define _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_DEPRECATED 1018#else 1019# define _LIBCPP_DEPRECATED_IN_CXX20 1020#endif 1021 1022#if !defined(_LIBCPP_HAS_NO_CHAR8_T) 1023# define _LIBCPP_DEPRECATED_WITH_CHAR8_T _LIBCPP_DEPRECATED 1024#else 1025# define _LIBCPP_DEPRECATED_WITH_CHAR8_T 1026#endif 1027 1028// Macros to enter and leave a state where deprecation warnings are suppressed. 1029#if defined(_LIBCPP_COMPILER_CLANG_BASED) || defined(_LIBCPP_COMPILER_GCC) 1030# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \ 1031 _Pragma("GCC diagnostic push") \ 1032 _Pragma("GCC diagnostic ignored \"-Wdeprecated\"") \ 1033 _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") 1034# define _LIBCPP_SUPPRESS_DEPRECATED_POP \ 1035 _Pragma("GCC diagnostic pop") 1036#else 1037# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH 1038# define _LIBCPP_SUPPRESS_DEPRECATED_POP 1039#endif 1040 1041#if _LIBCPP_STD_VER <= 11 1042# define _LIBCPP_EXPLICIT_AFTER_CXX11 1043#else 1044# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1045#endif 1046 1047#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1048# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1049#else 1050# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1051#endif 1052 1053#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1054# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1055#else 1056# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1057#endif 1058 1059#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1060# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1061#else 1062# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1063#endif 1064 1065// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 1066// NODISCARD macros to the correct attribute. 1067#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1068# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 1069#elif defined(_LIBCPP_COMPILER_CLANG_BASED) && !defined(_LIBCPP_CXX03_LANG) 1070# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 1071#else 1072// We can't use GCC's [[gnu::warn_unused_result]] and 1073// __attribute__((warn_unused_result)), because GCC does not silence them via 1074// (void) cast. 1075# define _LIBCPP_NODISCARD_ATTRIBUTE 1076#endif 1077 1078// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1079// specified as such as an extension. 1080#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1081# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1082#else 1083# define _LIBCPP_NODISCARD_EXT 1084#endif 1085 1086#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1087 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1088# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1089#else 1090# define _LIBCPP_NODISCARD_AFTER_CXX17 1091#endif 1092 1093#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1094# define _LIBCPP_INLINE_VAR inline 1095#else 1096# define _LIBCPP_INLINE_VAR 1097#endif 1098 1099#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1100# define _LIBCPP_CONSTEXPR_IF_NODEBUG 1101#else 1102# define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1103#endif 1104 1105#if __has_attribute(no_destroy) 1106# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__)) 1107#else 1108# define _LIBCPP_NO_DESTROY 1109#endif 1110 1111#ifndef _LIBCPP_HAS_NO_ASAN 1112extern "C" _LIBCPP_FUNC_VIS void __sanitizer_annotate_contiguous_container( 1113 const void *, const void *, const void *, const void *); 1114#endif 1115 1116// Try to find out if RTTI is disabled. 1117#if defined(_LIBCPP_COMPILER_CLANG_BASED) && !__has_feature(cxx_rtti) 1118# define _LIBCPP_NO_RTTI 1119#elif defined(__GNUC__) && !defined(__GXX_RTTI) 1120# define _LIBCPP_NO_RTTI 1121#elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1122# define _LIBCPP_NO_RTTI 1123#endif 1124 1125#ifndef _LIBCPP_WEAK 1126#define _LIBCPP_WEAK __attribute__((__weak__)) 1127#endif 1128 1129// Thread API 1130#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1131 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1132 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1133 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1134# if defined(__FreeBSD__) || \ 1135 defined(__wasi__) || \ 1136 defined(__NetBSD__) || \ 1137 defined(__OpenBSD__) || \ 1138 defined(__NuttX__) || \ 1139 defined(__linux__) || \ 1140 defined(__GNU__) || \ 1141 defined(__APPLE__) || \ 1142 defined(__CloudABI__) || \ 1143 defined(__sun__) || \ 1144 defined(__MVS__) || \ 1145 defined(_AIX) || \ 1146 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1147# define _LIBCPP_HAS_THREAD_API_PTHREAD 1148# elif defined(__Fuchsia__) 1149 // TODO(44575): Switch to C11 thread API when possible. 1150# define _LIBCPP_HAS_THREAD_API_PTHREAD 1151# elif defined(_LIBCPP_WIN32API) 1152# define _LIBCPP_HAS_THREAD_API_WIN32 1153# else 1154# error "No thread API" 1155# endif // _LIBCPP_HAS_THREAD_API 1156#endif // _LIBCPP_HAS_NO_THREADS 1157 1158#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1159#if defined(__ANDROID__) && __ANDROID_API__ >= 30 1160#define _LIBCPP_HAS_COND_CLOCKWAIT 1161#elif defined(_LIBCPP_GLIBC_PREREQ) 1162#if _LIBCPP_GLIBC_PREREQ(2, 30) 1163#define _LIBCPP_HAS_COND_CLOCKWAIT 1164#endif 1165#endif 1166#endif 1167 1168#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1169#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1170 _LIBCPP_HAS_NO_THREADS is not defined. 1171#endif 1172 1173#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1174#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1175 _LIBCPP_HAS_NO_THREADS is defined. 1176#endif 1177 1178#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1179#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1180 _LIBCPP_HAS_NO_THREADS is defined. 1181#endif 1182 1183#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(__STDCPP_THREADS__) 1184#define __STDCPP_THREADS__ 1 1185#endif 1186 1187// The glibc and Bionic implementation of pthreads implements 1188// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 1189// mutexes have no destroy mechanism. 1190// 1191// This optimization can't be performed on Apple platforms, where 1192// pthread_mutex_destroy can allow the kernel to release resources. 1193// See https://llvm.org/D64298 for details. 1194// 1195// TODO(EricWF): Enable this optimization on Bionic after speaking to their 1196// respective stakeholders. 1197#if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) \ 1198 || (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) \ 1199 || defined(_LIBCPP_HAS_THREAD_API_WIN32) 1200# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 1201#endif 1202 1203// Destroying a condvar is a nop on Windows. 1204// 1205// This optimization can't be performed on Apple platforms, where 1206// pthread_cond_destroy can allow the kernel to release resources. 1207// See https://llvm.org/D64298 for details. 1208// 1209// TODO(EricWF): This is potentially true for some pthread implementations 1210// as well. 1211#if (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) || \ 1212 defined(_LIBCPP_HAS_THREAD_API_WIN32) 1213# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 1214#endif 1215 1216// Systems that use capability-based security (FreeBSD with Capsicum, 1217// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1218// Functions like open(), rename(), unlink() and stat() should not be 1219// used, as they attempt to access the global filesystem namespace. 1220#ifdef __CloudABI__ 1221#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1222#endif 1223 1224// CloudABI is intended for running networked services. Processes do not 1225// have standard input and output channels. 1226#ifdef __CloudABI__ 1227#define _LIBCPP_HAS_NO_STDIN 1228#define _LIBCPP_HAS_NO_STDOUT 1229#endif 1230 1231// Some systems do not provide gets() in their C library, for security reasons. 1232#if defined(_LIBCPP_MSVCRT) || \ 1233 (defined(__FreeBSD_version) && __FreeBSD_version >= 1300043) || \ 1234 defined(__OpenBSD__) 1235# define _LIBCPP_C_HAS_NO_GETS 1236#endif 1237 1238#if defined(__BIONIC__) || defined(__CloudABI__) || defined(__NuttX__) || \ 1239 defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC) || \ 1240 defined(__MVS__) || defined(__OpenBSD__) 1241#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1242#endif 1243 1244// Thread-unsafe functions such as strtok() and localtime() 1245// are not available. 1246#ifdef __CloudABI__ 1247#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1248#endif 1249 1250#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1251# define _LIBCPP_HAS_C_ATOMIC_IMP 1252#elif defined(_LIBCPP_COMPILER_GCC) 1253# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1254#endif 1255 1256#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && \ 1257 !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) && \ 1258 !defined(_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP)) \ 1259 || defined(_LIBCPP_HAS_NO_THREADS) 1260# define _LIBCPP_HAS_NO_ATOMIC_HEADER 1261#else 1262# ifndef _LIBCPP_ATOMIC_FLAG_TYPE 1263# define _LIBCPP_ATOMIC_FLAG_TYPE bool 1264# endif 1265# ifdef _LIBCPP_FREESTANDING 1266# define _LIBCPP_ATOMIC_ONLY_USE_BUILTINS 1267# endif 1268#endif 1269 1270#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1271#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1272#endif 1273 1274#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1275# if defined(__clang__) && __has_attribute(acquire_capability) 1276// Work around the attribute handling in clang. When both __declspec and 1277// __attribute__ are present, the processing goes awry preventing the definition 1278// of the types. 1279# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1280# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1281# endif 1282# endif 1283#endif 1284 1285#ifdef _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1286# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) __attribute__((x)) 1287#else 1288# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) 1289#endif 1290 1291#if __has_attribute(require_constant_initialization) 1292# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1293#else 1294# define _LIBCPP_SAFE_STATIC 1295#endif 1296 1297#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1298# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1299 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1300# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1301 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1302#else 1303# define _LIBCPP_DIAGNOSE_WARNING(...) 1304# define _LIBCPP_DIAGNOSE_ERROR(...) 1305#endif 1306 1307// Use a function like macro to imply that it must be followed by a semicolon 1308#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1309# define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1310#elif __has_cpp_attribute(clang::fallthrough) 1311# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1312#elif __has_attribute(fallthrough) || _GNUC_VER >= 700 1313# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1314#else 1315# define _LIBCPP_FALLTHROUGH() ((void)0) 1316#endif 1317 1318#if __has_attribute(__nodebug__) 1319#define _LIBCPP_NODEBUG __attribute__((__nodebug__)) 1320#else 1321#define _LIBCPP_NODEBUG 1322#endif 1323 1324#if __has_attribute(__nodebug__) && (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 900) 1325# define _LIBCPP_NODEBUG_TYPE __attribute__((nodebug)) 1326#else 1327# define _LIBCPP_NODEBUG_TYPE 1328#endif 1329 1330#if __has_attribute(__standalone_debug__) 1331#define _LIBCPP_STANDALONE_DEBUG __attribute__((__standalone_debug__)) 1332#else 1333#define _LIBCPP_STANDALONE_DEBUG 1334#endif 1335 1336#if __has_attribute(__preferred_name__) 1337#define _LIBCPP_PREFERRED_NAME(x) __attribute__((__preferred_name__(x))) 1338#else 1339#define _LIBCPP_PREFERRED_NAME(x) 1340#endif 1341 1342#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1343 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1344# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1345#else 1346# define _LIBCPP_DECLSPEC_EMPTY_BASES 1347#endif 1348 1349#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1350#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1351#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1352#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1353#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1354#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1355 1356#if defined(_LIBCPP_ENABLE_CXX20_REMOVED_FEATURES) 1357#define _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS 1358#define _LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS 1359#define _LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS 1360#define _LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR 1361#define _LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS 1362#endif // _LIBCPP_ENABLE_CXX20_REMOVED_FEATURES 1363 1364#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1365#define _LIBCPP_HAS_NO_COROUTINES 1366#endif 1367 1368#if !defined(__cpp_impl_three_way_comparison) || __cpp_impl_three_way_comparison < 201907L 1369#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1370#endif 1371 1372#if defined(_LIBCPP_COMPILER_IBM) 1373#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1374#endif 1375 1376#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1377# define _LIBCPP_PUSH_MACROS 1378# define _LIBCPP_POP_MACROS 1379#else 1380 // Don't warn about macro conflicts when we can restore them at the 1381 // end of the header. 1382# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1383# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1384# endif 1385# if defined(_LIBCPP_COMPILER_MSVC) 1386# define _LIBCPP_PUSH_MACROS \ 1387 __pragma(push_macro("min")) \ 1388 __pragma(push_macro("max")) 1389# define _LIBCPP_POP_MACROS \ 1390 __pragma(pop_macro("min")) \ 1391 __pragma(pop_macro("max")) 1392# else 1393# define _LIBCPP_PUSH_MACROS \ 1394 _Pragma("push_macro(\"min\")") \ 1395 _Pragma("push_macro(\"max\")") 1396# define _LIBCPP_POP_MACROS \ 1397 _Pragma("pop_macro(\"min\")") \ 1398 _Pragma("pop_macro(\"max\")") 1399# endif 1400#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1401 1402#ifndef _LIBCPP_NO_AUTO_LINK 1403# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1404# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 1405# pragma comment(lib, "c++.lib") 1406# else 1407# pragma comment(lib, "libc++.lib") 1408# endif 1409# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1410#endif // _LIBCPP_NO_AUTO_LINK 1411 1412// Configures the fopen close-on-exec mode character, if any. This string will 1413// be appended to any mode string used by fstream for fopen/fdopen. 1414// 1415// Not all platforms support this, but it helps avoid fd-leaks on platforms that 1416// do. 1417#if defined(__BIONIC__) 1418# define _LIBCPP_FOPEN_CLOEXEC_MODE "e" 1419#else 1420# define _LIBCPP_FOPEN_CLOEXEC_MODE 1421#endif 1422 1423#ifdef _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 1424#define _LIBCPP_BUILTIN_CONSTANT_P(x) __builtin_constant_p(x) 1425#else 1426#define _LIBCPP_BUILTIN_CONSTANT_P(x) false 1427#endif 1428 1429// Support for _FILE_OFFSET_BITS=64 landed gradually in Android, so the full set 1430// of functions used in cstdio may not be available for low API levels when 1431// using 64-bit file offsets on LP32. 1432#if defined(__BIONIC__) && defined(__USE_FILE_OFFSET64) && __ANDROID_API__ < 24 1433#define _LIBCPP_HAS_NO_FGETPOS_FSETPOS 1434#endif 1435 1436#if __has_attribute(init_priority) 1437# define _LIBCPP_INIT_PRIORITY_MAX __attribute__((init_priority(101))) 1438#else 1439# define _LIBCPP_INIT_PRIORITY_MAX 1440#endif 1441 1442#if defined(__GNUC__) || defined(__clang__) 1443#define _LIBCPP_FORMAT_PRINTF(a, b) \ 1444 __attribute__((__format__(__printf__, a, b))) 1445#else 1446#define _LIBCPP_FORMAT_PRINTF(a, b) 1447#endif 1448 1449#endif // __cplusplus 1450 1451#endif // _LIBCPP_CONFIG 1452