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#if defined(_MSC_VER) && !defined(__clang__) 14# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 15# define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 16# endif 17#endif 18 19#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 20#pragma GCC system_header 21#endif 22 23#ifdef __cplusplus 24 25#ifdef __GNUC__ 26# define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__) 27// The _GNUC_VER_NEW macro better represents the new GCC versioning scheme 28// introduced in GCC 5.0. 29# define _GNUC_VER_NEW (_GNUC_VER * 10 + __GNUC_PATCHLEVEL__) 30#else 31# define _GNUC_VER 0 32# define _GNUC_VER_NEW 0 33#endif 34 35#define _LIBCPP_VERSION 13000 36 37#ifndef _LIBCPP_ABI_VERSION 38# define _LIBCPP_ABI_VERSION 1 39#endif 40 41#if __STDC_HOSTED__ == 0 42# define _LIBCPP_FREESTANDING 43#endif 44 45#ifndef _LIBCPP_STD_VER 46# if __cplusplus <= 201103L 47# define _LIBCPP_STD_VER 11 48# elif __cplusplus <= 201402L 49# define _LIBCPP_STD_VER 14 50# elif __cplusplus <= 201703L 51# define _LIBCPP_STD_VER 17 52# elif __cplusplus <= 202002L 53# define _LIBCPP_STD_VER 20 54# else 55# define _LIBCPP_STD_VER 21 // current year, or date of c++2b ratification 56# endif 57#endif // _LIBCPP_STD_VER 58 59#if defined(__ELF__) 60# define _LIBCPP_OBJECT_FORMAT_ELF 1 61#elif defined(__MACH__) 62# define _LIBCPP_OBJECT_FORMAT_MACHO 1 63#elif defined(_WIN32) 64# define _LIBCPP_OBJECT_FORMAT_COFF 1 65#elif defined(__wasm__) 66# define _LIBCPP_OBJECT_FORMAT_WASM 1 67#else 68 // ... add new file formats here ... 69#endif 70 71#if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 72// Change short string representation so that string data starts at offset 0, 73// improving its alignment in some cases. 74# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 75// Fix deque iterator type in order to support incomplete types. 76# define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 77// Fix undefined behavior in how std::list stores its linked nodes. 78# define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB 79// Fix undefined behavior in how __tree stores its end and parent nodes. 80# define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB 81// Fix undefined behavior in how __hash_table stores its pointer types. 82# define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB 83# define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB 84# define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE 85// Don't use a nullptr_t simulation type in C++03 instead using C++11 nullptr 86// provided under the alternate keyword __nullptr, which changes the mangling 87// of nullptr_t. This option is ABI incompatible with GCC in C++03 mode. 88# define _LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR 89// Define the `pointer_safety` enum as a C++11 strongly typed enumeration 90// instead of as a class simulating an enum. If this option is enabled 91// `pointer_safety` and `get_pointer_safety()` will no longer be available 92// in C++03. 93# define _LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE 94// Define a key function for `bad_function_call` in the library, to centralize 95// its vtable and typeinfo to libc++ rather than having all other libraries 96// using that class define their own copies. 97# define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 98// Enable optimized version of __do_get_(un)signed which avoids redundant copies. 99# define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET 100// Use the smallest possible integer type to represent the index of the variant. 101// Previously libc++ used "unsigned int" exclusively. 102# define _LIBCPP_ABI_VARIANT_INDEX_TYPE_OPTIMIZATION 103// Unstable attempt to provide a more optimized std::function 104# define _LIBCPP_ABI_OPTIMIZED_FUNCTION 105// All the regex constants must be distinct and nonzero. 106# define _LIBCPP_ABI_REGEX_CONSTANTS_NONZERO 107// Re-worked external template instantiations for std::string with a focus on 108// performance and fast-path inlining. 109# define _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION 110// Enable clang::trivial_abi on std::unique_ptr. 111# define _LIBCPP_ABI_ENABLE_UNIQUE_PTR_TRIVIAL_ABI 112// Enable clang::trivial_abi on std::shared_ptr and std::weak_ptr 113# define _LIBCPP_ABI_ENABLE_SHARED_PTR_TRIVIAL_ABI 114#elif _LIBCPP_ABI_VERSION == 1 115# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 116// Enable compiling copies of now inline methods into the dylib to support 117// applications compiled against older libraries. This is unnecessary with 118// COFF dllexport semantics, since dllexport forces a non-inline definition 119// of inline functions to be emitted anyway. Our own non-inline copy would 120// conflict with the dllexport-emitted copy, so we disable it. 121# define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS 122# endif 123// Feature macros for disabling pre ABI v1 features. All of these options 124// are deprecated. 125# if defined(__FreeBSD__) 126# define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR 127# endif 128#endif 129 130#if defined(_LIBCPP_BUILDING_LIBRARY) || defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 131// Enable additional explicit instantiations of iostreams components. This 132// reduces the number of weak definitions generated in programs that use 133// iostreams by providing a single strong definition in the shared library. 134# define _LIBCPP_ABI_ENABLE_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 135#endif 136 137#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y 138#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) 139 140#ifndef _LIBCPP_ABI_NAMESPACE 141# define _LIBCPP_ABI_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION) 142#endif 143 144#if __cplusplus < 201103L 145#define _LIBCPP_CXX03_LANG 146#endif 147 148#ifndef __has_attribute 149#define __has_attribute(__x) 0 150#endif 151 152#ifndef __has_builtin 153#define __has_builtin(__x) 0 154#endif 155 156#ifndef __has_extension 157#define __has_extension(__x) 0 158#endif 159 160#ifndef __has_feature 161#define __has_feature(__x) 0 162#endif 163 164#ifndef __has_cpp_attribute 165#define __has_cpp_attribute(__x) 0 166#endif 167 168// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by 169// the compiler and '1' otherwise. 170#ifndef __is_identifier 171#define __is_identifier(__x) 1 172#endif 173 174#ifndef __has_declspec_attribute 175#define __has_declspec_attribute(__x) 0 176#endif 177 178#define __has_keyword(__x) !(__is_identifier(__x)) 179 180#ifndef __has_include 181#define __has_include(...) 0 182#endif 183 184#if defined(__clang__) 185# define _LIBCPP_COMPILER_CLANG 186# ifndef __apple_build_version__ 187# define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__) 188# endif 189#elif defined(__GNUC__) 190# define _LIBCPP_COMPILER_GCC 191#elif defined(_MSC_VER) 192# define _LIBCPP_COMPILER_MSVC 193#elif defined(__IBMCPP__) 194# define _LIBCPP_COMPILER_IBM 195#endif 196 197#if defined(_LIBCPP_COMPILER_GCC) && __cplusplus < 201103L 198#error "libc++ does not support using GCC with C++03. Please enable C++11" 199#endif 200 201// FIXME: ABI detection should be done via compiler builtin macros. This 202// is just a placeholder until Clang implements such macros. For now assume 203// that Windows compilers pretending to be MSVC++ target the Microsoft ABI, 204// and allow the user to explicitly specify the ABI to handle cases where this 205// heuristic falls short. 206#if defined(_LIBCPP_ABI_FORCE_ITANIUM) && defined(_LIBCPP_ABI_FORCE_MICROSOFT) 207# error "Only one of _LIBCPP_ABI_FORCE_ITANIUM and _LIBCPP_ABI_FORCE_MICROSOFT can be defined" 208#elif defined(_LIBCPP_ABI_FORCE_ITANIUM) 209# define _LIBCPP_ABI_ITANIUM 210#elif defined(_LIBCPP_ABI_FORCE_MICROSOFT) 211# define _LIBCPP_ABI_MICROSOFT 212#else 213# if defined(_WIN32) && defined(_MSC_VER) 214# define _LIBCPP_ABI_MICROSOFT 215# else 216# define _LIBCPP_ABI_ITANIUM 217# endif 218#endif 219 220#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_NO_VCRUNTIME) 221# define _LIBCPP_ABI_VCRUNTIME 222#endif 223 224// Need to detect which libc we're using if we're on Linux. 225#if defined(__linux__) 226# include <features.h> 227# if defined(__GLIBC_PREREQ) 228# define _LIBCPP_GLIBC_PREREQ(a, b) __GLIBC_PREREQ(a, b) 229# else 230# define _LIBCPP_GLIBC_PREREQ(a, b) 0 231# endif // defined(__GLIBC_PREREQ) 232#endif // defined(__linux__) 233 234#ifdef __LITTLE_ENDIAN__ 235# if __LITTLE_ENDIAN__ 236# define _LIBCPP_LITTLE_ENDIAN 237# endif // __LITTLE_ENDIAN__ 238#endif // __LITTLE_ENDIAN__ 239 240#ifdef __BIG_ENDIAN__ 241# if __BIG_ENDIAN__ 242# define _LIBCPP_BIG_ENDIAN 243# endif // __BIG_ENDIAN__ 244#endif // __BIG_ENDIAN__ 245 246#ifdef __BYTE_ORDER__ 247# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 248# define _LIBCPP_LITTLE_ENDIAN 249# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 250# define _LIBCPP_BIG_ENDIAN 251# endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 252#endif // __BYTE_ORDER__ 253 254#ifdef __FreeBSD__ 255# include <sys/endian.h> 256# include <osreldate.h> 257# if _BYTE_ORDER == _LITTLE_ENDIAN 258# define _LIBCPP_LITTLE_ENDIAN 259# else // _BYTE_ORDER == _LITTLE_ENDIAN 260# define _LIBCPP_BIG_ENDIAN 261# endif // _BYTE_ORDER == _LITTLE_ENDIAN 262# ifndef __LONG_LONG_SUPPORTED 263# define _LIBCPP_HAS_NO_LONG_LONG 264# endif // __LONG_LONG_SUPPORTED 265#endif // __FreeBSD__ 266 267#if defined(__NetBSD__) || defined(__OpenBSD__) 268# include <sys/endian.h> 269# if _BYTE_ORDER == _LITTLE_ENDIAN 270# define _LIBCPP_LITTLE_ENDIAN 271# else // _BYTE_ORDER == _LITTLE_ENDIAN 272# define _LIBCPP_BIG_ENDIAN 273# endif // _BYTE_ORDER == _LITTLE_ENDIAN 274#endif // defined(__NetBSD__) || defined(__OpenBSD__) 275 276#if defined(_WIN32) 277# define _LIBCPP_WIN32API 278# define _LIBCPP_LITTLE_ENDIAN 279# define _LIBCPP_SHORT_WCHAR 1 280// Both MinGW and native MSVC provide a "MSVC"-like environment 281# define _LIBCPP_MSVCRT_LIKE 282// If mingw not explicitly detected, assume using MS C runtime only if 283// a MS compatibility version is specified. 284# if defined(_MSC_VER) && !defined(__MINGW32__) 285# define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 286# endif 287# if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 288# define _LIBCPP_HAS_BITSCAN64 289# endif 290# define _LIBCPP_HAS_OPEN_WITH_WCHAR 291# if defined(_LIBCPP_MSVCRT) 292# define _LIBCPP_HAS_QUICK_EXIT 293# endif 294 295// Some CRT APIs are unavailable to store apps 296# if defined(WINAPI_FAMILY) 297# include <winapifamily.h> 298# if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 299 (!defined(WINAPI_PARTITION_SYSTEM) || \ 300 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 301# define _LIBCPP_WINDOWS_STORE_APP 302# endif 303# endif 304#endif // defined(_WIN32) 305 306#ifdef __sun__ 307# include <sys/isa_defs.h> 308# ifdef _LITTLE_ENDIAN 309# define _LIBCPP_LITTLE_ENDIAN 310# else 311# define _LIBCPP_BIG_ENDIAN 312# endif 313#endif // __sun__ 314 315#if defined(__OpenBSD__) || defined(__CloudABI__) 316 // Certain architectures provide arc4random(). Prefer using 317 // arc4random() over /dev/{u,}random to make it possible to obtain 318 // random data even when using sandboxing mechanisms such as chroots, 319 // Capsicum, etc. 320# define _LIBCPP_USING_ARC4_RANDOM 321#elif defined(__Fuchsia__) || defined(__wasi__) 322# define _LIBCPP_USING_GETENTROPY 323#elif defined(__native_client__) 324 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, 325 // including accesses to the special files under /dev. C++11's 326 // std::random_device is instead exposed through a NaCl syscall. 327# define _LIBCPP_USING_NACL_RANDOM 328#elif defined(_LIBCPP_WIN32API) 329# define _LIBCPP_USING_WIN32_RANDOM 330#else 331# define _LIBCPP_USING_DEV_RANDOM 332#endif 333 334#if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 335# include <endian.h> 336# if __BYTE_ORDER == __LITTLE_ENDIAN 337# define _LIBCPP_LITTLE_ENDIAN 338# elif __BYTE_ORDER == __BIG_ENDIAN 339# define _LIBCPP_BIG_ENDIAN 340# else // __BYTE_ORDER == __BIG_ENDIAN 341# error unable to determine endian 342# endif 343#endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 344 345#if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 346# define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 347#else 348# define _LIBCPP_NO_CFI 349#endif 350 351#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 352# if defined(__FreeBSD__) 353# define _LIBCPP_HAS_ALIGNED_ALLOC 354# define _LIBCPP_HAS_QUICK_EXIT 355# if __FreeBSD_version >= 1300064 || \ 356 (__FreeBSD_version >= 1201504 && __FreeBSD_version < 1300000) 357# define _LIBCPP_HAS_TIMESPEC_GET 358# endif 359# elif defined(__BIONIC__) 360# if __ANDROID_API__ >= 21 361# define _LIBCPP_HAS_QUICK_EXIT 362# endif 363# if __ANDROID_API__ >= 28 364# define _LIBCPP_HAS_ALIGNED_ALLOC 365# endif 366# if __ANDROID_API__ >= 29 367# define _LIBCPP_HAS_TIMESPEC_GET 368# endif 369# elif defined(__Fuchsia__) || defined(__wasi__) || defined(__NetBSD__) 370# define _LIBCPP_HAS_ALIGNED_ALLOC 371# define _LIBCPP_HAS_QUICK_EXIT 372# define _LIBCPP_HAS_TIMESPEC_GET 373# elif defined(__OpenBSD__) 374# define _LIBCPP_HAS_ALIGNED_ALLOC 375# define _LIBCPP_HAS_TIMESPEC_GET 376# elif defined(__linux__) 377# if !defined(_LIBCPP_HAS_MUSL_LIBC) 378# if _LIBCPP_GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 379# define _LIBCPP_HAS_QUICK_EXIT 380# endif 381# if _LIBCPP_GLIBC_PREREQ(2, 17) 382# define _LIBCPP_HAS_ALIGNED_ALLOC 383# define _LIBCPP_HAS_TIMESPEC_GET 384# endif 385# else // defined(_LIBCPP_HAS_MUSL_LIBC) 386# define _LIBCPP_HAS_ALIGNED_ALLOC 387# define _LIBCPP_HAS_QUICK_EXIT 388# define _LIBCPP_HAS_TIMESPEC_GET 389# endif 390# elif defined(__APPLE__) 391 // timespec_get and aligned_alloc were introduced in macOS 10.15 and 392 // aligned releases 393# if (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 101500 || \ 394 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ >= 130000 || \ 395 __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ >= 130000 || \ 396 __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ >= 60000) 397# define _LIBCPP_HAS_ALIGNED_ALLOC 398# define _LIBCPP_HAS_TIMESPEC_GET 399# endif 400# endif // __APPLE__ 401#endif 402 403#ifndef _LIBCPP_CXX03_LANG 404# define _LIBCPP_ALIGNOF(_Tp) alignof(_Tp) 405#elif defined(_LIBCPP_COMPILER_CLANG) 406# define _LIBCPP_ALIGNOF(_Tp) _Alignof(_Tp) 407#else 408# error "We don't know a correct way to implement alignof(T) in C++03 outside of Clang" 409#endif 410 411#define _LIBCPP_PREFERRED_ALIGNOF(_Tp) __alignof(_Tp) 412 413#if defined(_LIBCPP_COMPILER_CLANG) 414 415#if defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 416# error _LIBCPP_ALTERNATE_STRING_LAYOUT is deprecated, please use _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT instead 417#endif 418#if defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 419 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2) 420# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 421#endif 422 423#if __has_feature(cxx_alignas) 424# define _ALIGNAS_TYPE(x) alignas(x) 425# define _ALIGNAS(x) alignas(x) 426#else 427# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 428# define _ALIGNAS(x) __attribute__((__aligned__(x))) 429#endif 430 431#if __cplusplus < 201103L 432typedef __char16_t char16_t; 433typedef __char32_t char32_t; 434#endif 435 436#if !__has_feature(cxx_exceptions) 437# define _LIBCPP_NO_EXCEPTIONS 438#endif 439 440#if !(__has_feature(cxx_strong_enums)) 441#define _LIBCPP_HAS_NO_STRONG_ENUMS 442#endif 443 444#if __has_feature(cxx_attributes) 445# define _LIBCPP_NORETURN [[noreturn]] 446#else 447# define _LIBCPP_NORETURN __attribute__ ((noreturn)) 448#endif 449 450#if !(__has_feature(cxx_nullptr)) 451# if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 452# define nullptr __nullptr 453# else 454# define _LIBCPP_HAS_NO_NULLPTR 455# endif 456#endif 457 458// Objective-C++ features (opt-in) 459#if __has_feature(objc_arc) 460#define _LIBCPP_HAS_OBJC_ARC 461#endif 462 463#if __has_feature(objc_arc_weak) 464#define _LIBCPP_HAS_OBJC_ARC_WEAK 465#endif 466 467#if __has_extension(blocks) 468# define _LIBCPP_HAS_EXTENSION_BLOCKS 469#endif 470 471#if defined(_LIBCPP_HAS_EXTENSION_BLOCKS) && defined(__APPLE__) 472# define _LIBCPP_HAS_BLOCKS_RUNTIME 473#endif 474 475#if !(__has_feature(cxx_relaxed_constexpr)) 476#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 477#endif 478 479#if !(__has_feature(cxx_variable_templates)) 480#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 481#endif 482 483#if !(__has_feature(cxx_noexcept)) 484#define _LIBCPP_HAS_NO_NOEXCEPT 485#endif 486 487#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 488#define _LIBCPP_HAS_NO_ASAN 489#endif 490 491// Allow for build-time disabling of unsigned integer sanitization 492#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 493#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 494#endif 495 496#if __has_builtin(__builtin_launder) 497#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 498#endif 499 500#if __has_builtin(__builtin_constant_p) 501#define _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 502#endif 503 504#if !__is_identifier(__has_unique_object_representations) 505#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 506#endif 507 508#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 509 510// Literal operators ""d and ""y are supported starting with LLVM Clang 8 and AppleClang 10.0.1 511#if (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 800) || \ 512 (defined(__apple_build_version__) && __apple_build_version__ < 10010000) 513#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS 514#endif 515 516#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 517 518#elif defined(_LIBCPP_COMPILER_GCC) 519 520#define _ALIGNAS(x) __attribute__((__aligned__(x))) 521#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 522 523#define _LIBCPP_NORETURN __attribute__((noreturn)) 524 525#if !__EXCEPTIONS 526# define _LIBCPP_NO_EXCEPTIONS 527#endif 528 529// Determine if GCC supports relaxed constexpr 530#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 531#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 532#endif 533 534// GCC 5 supports variable templates 535#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 536#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 537#endif 538 539#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 540#define _LIBCPP_HAS_NO_ASAN 541#endif 542 543#if _GNUC_VER >= 700 544#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 545#define _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 546#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 547#endif 548 549#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 550 551#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 552 553#elif defined(_LIBCPP_COMPILER_MSVC) 554 555#define _LIBCPP_TOSTRING2(x) #x 556#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 557#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 558 559#if _MSC_VER < 1900 560#error "MSVC versions prior to Visual Studio 2015 are not supported" 561#endif 562 563#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 564#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 565#define __alignof__ __alignof 566#define _LIBCPP_NORETURN __declspec(noreturn) 567#define _ALIGNAS(x) __declspec(align(x)) 568#define _ALIGNAS_TYPE(x) alignas(x) 569 570#define _LIBCPP_WEAK 571 572#define _LIBCPP_HAS_NO_ASAN 573 574#define _LIBCPP_ALWAYS_INLINE __forceinline 575 576#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 577 578#define _LIBCPP_DISABLE_EXTENSION_WARNING 579 580#elif defined(_LIBCPP_COMPILER_IBM) 581 582#define _ALIGNAS(x) __attribute__((__aligned__(x))) 583#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 584#define _ATTRIBUTE(x) __attribute__((x)) 585#define _LIBCPP_NORETURN __attribute__((noreturn)) 586 587#define _LIBCPP_HAS_NO_UNICODE_CHARS 588#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 589 590#if defined(_AIX) 591#define __MULTILOCALE_API 592#endif 593 594#define _LIBCPP_HAS_NO_ASAN 595 596#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 597 598#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 599 600#define _LIBCPP_DISABLE_EXTENSION_WARNING 601 602#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 603 604#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 605 606#ifdef _DLL 607# define _LIBCPP_CRT_FUNC __declspec(dllimport) 608#else 609# define _LIBCPP_CRT_FUNC 610#endif 611 612#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 613# define _LIBCPP_DLL_VIS 614# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 615# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 616# define _LIBCPP_OVERRIDABLE_FUNC_VIS 617# define _LIBCPP_EXPORTED_FROM_ABI 618#elif defined(_LIBCPP_BUILDING_LIBRARY) 619# define _LIBCPP_DLL_VIS __declspec(dllexport) 620# if defined(__MINGW32__) 621# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 622# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 623# else 624# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 625# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 626# endif 627# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 628# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 629#else 630# define _LIBCPP_DLL_VIS __declspec(dllimport) 631# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 632# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 633# define _LIBCPP_OVERRIDABLE_FUNC_VIS 634# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 635#endif 636 637#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 638#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 639#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 640#define _LIBCPP_HIDDEN 641#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 642#define _LIBCPP_TEMPLATE_VIS 643#define _LIBCPP_TEMPLATE_DATA_VIS 644#define _LIBCPP_ENUM_VIS 645 646#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 647 648#ifndef _LIBCPP_HIDDEN 649# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 650# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 651# else 652# define _LIBCPP_HIDDEN 653# endif 654#endif 655 656#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 657# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 658// The inline should be removed once PR32114 is resolved 659# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 660# else 661# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 662# endif 663#endif 664 665#ifndef _LIBCPP_FUNC_VIS 666# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 667# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 668# else 669# define _LIBCPP_FUNC_VIS 670# endif 671#endif 672 673#ifndef _LIBCPP_TYPE_VIS 674# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 675# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 676# else 677# define _LIBCPP_TYPE_VIS 678# endif 679#endif 680 681#ifndef _LIBCPP_TEMPLATE_VIS 682# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 683# if __has_attribute(__type_visibility__) 684# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 685# else 686# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 687# endif 688# else 689# define _LIBCPP_TEMPLATE_VIS 690# endif 691#endif 692 693#ifndef _LIBCPP_TEMPLATE_DATA_VIS 694# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 695# define _LIBCPP_TEMPLATE_DATA_VIS __attribute__ ((__visibility__("default"))) 696# else 697# define _LIBCPP_TEMPLATE_DATA_VIS 698# endif 699#endif 700 701#ifndef _LIBCPP_EXPORTED_FROM_ABI 702# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 703# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 704# else 705# define _LIBCPP_EXPORTED_FROM_ABI 706# endif 707#endif 708 709#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 710#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 711#endif 712 713#ifndef _LIBCPP_EXCEPTION_ABI 714# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 715# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 716# else 717# define _LIBCPP_EXCEPTION_ABI 718# endif 719#endif 720 721#ifndef _LIBCPP_ENUM_VIS 722# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 723# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 724# else 725# define _LIBCPP_ENUM_VIS 726# endif 727#endif 728 729#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 730# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 731# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 732# else 733# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 734# endif 735#endif 736 737#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 738#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 739#endif 740 741#if __has_attribute(internal_linkage) 742# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 743#else 744# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 745#endif 746 747#if __has_attribute(exclude_from_explicit_instantiation) 748# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 749#else 750 // Try to approximate the effect of exclude_from_explicit_instantiation 751 // (which is that entities are not assumed to be provided by explicit 752 // template instantiations in the dylib) by always inlining those entities. 753# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 754#endif 755 756#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 757# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 758# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 759# else 760# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 761# endif 762#endif 763 764#ifndef _LIBCPP_HIDE_FROM_ABI 765# if _LIBCPP_HIDE_FROM_ABI_PER_TU 766# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 767# else 768# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 769# endif 770#endif 771 772#ifdef _LIBCPP_BUILDING_LIBRARY 773# if _LIBCPP_ABI_VERSION > 1 774# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 775# else 776# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 777# endif 778#else 779# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 780#endif 781 782// Just so we can migrate to the new macros gradually. 783#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 784 785// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 786#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 787#define _LIBCPP_END_NAMESPACE_STD } } 788#define _VSTD std::_LIBCPP_ABI_NAMESPACE 789_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 790 791#if _LIBCPP_STD_VER >= 17 792#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 793 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 794#else 795#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 796 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 797#endif 798 799#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 800 _LIBCPP_END_NAMESPACE_STD } } 801 802#define _VSTD_FS _VSTD::__fs::filesystem 803 804#ifndef _LIBCPP_PREFERRED_OVERLOAD 805# if __has_attribute(__enable_if__) 806# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 807# endif 808#endif 809 810#ifndef _LIBCPP_HAS_NO_NOEXCEPT 811# define _NOEXCEPT noexcept 812# define _NOEXCEPT_(x) noexcept(x) 813#else 814# define _NOEXCEPT throw() 815# define _NOEXCEPT_(x) 816#endif 817 818#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 819typedef unsigned short char16_t; 820typedef unsigned int char32_t; 821#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 822 823#ifndef __SIZEOF_INT128__ 824#define _LIBCPP_HAS_NO_INT128 825#endif 826 827#ifdef _LIBCPP_CXX03_LANG 828# define static_assert(...) _Static_assert(__VA_ARGS__) 829# define decltype(...) __decltype(__VA_ARGS__) 830#endif // _LIBCPP_CXX03_LANG 831 832#ifdef _LIBCPP_CXX03_LANG 833# define _LIBCPP_CONSTEXPR 834#else 835# define _LIBCPP_CONSTEXPR constexpr 836#endif 837 838#ifndef __cpp_consteval 839# define _LIBCPP_CONSTEVAL _LIBCPP_CONSTEXPR 840#else 841# define _LIBCPP_CONSTEVAL consteval 842#endif 843 844#if !defined(__cpp_concepts) || __cpp_concepts < 201907L 845#define _LIBCPP_HAS_NO_CONCEPTS 846#endif 847 848#ifdef _LIBCPP_CXX03_LANG 849# define _LIBCPP_DEFAULT {} 850#else 851# define _LIBCPP_DEFAULT = default; 852#endif 853 854#ifdef _LIBCPP_CXX03_LANG 855# define _LIBCPP_EQUAL_DELETE 856#else 857# define _LIBCPP_EQUAL_DELETE = delete 858#endif 859 860#ifdef __GNUC__ 861# define _LIBCPP_NOALIAS __attribute__((__malloc__)) 862#else 863# define _LIBCPP_NOALIAS 864#endif 865 866#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 867 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 868# define _LIBCPP_EXPLICIT explicit 869#else 870# define _LIBCPP_EXPLICIT 871#endif 872 873#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 874# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 875# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 876 __lx __v_; \ 877 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 878 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 879 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 880 }; 881#else // _LIBCPP_HAS_NO_STRONG_ENUMS 882# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 883# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 884#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 885 886// _LIBCPP_DEBUG potential values: 887// - undefined: No assertions. This is the default. 888// - 0: Basic assertions 889// - 1: Basic assertions + iterator validity checks. 890#if !defined(_LIBCPP_DEBUG) 891# define _LIBCPP_DEBUG_LEVEL 0 892#elif _LIBCPP_DEBUG == 0 893# define _LIBCPP_DEBUG_LEVEL 1 894#elif _LIBCPP_DEBUG == 1 895# define _LIBCPP_DEBUG_LEVEL 2 896#else 897# error Supported values for _LIBCPP_DEBUG are 0 and 1 898#endif 899 900// _LIBCPP_DEBUG_LEVEL is always defined to one of [0, 1, 2] at this point 901#if _LIBCPP_DEBUG_LEVEL >= 1 && !defined(_LIBCPP_DISABLE_EXTERN_TEMPLATE) 902# define _LIBCPP_EXTERN_TEMPLATE(...) 903#endif 904 905#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 906# define _LIBCPP_EXTERN_TEMPLATE(...) 907# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) 908#endif 909 910#ifndef _LIBCPP_EXTERN_TEMPLATE 911#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 912#endif 913 914// When the Debug mode is enabled, we disable extern declarations because we 915// don't want to use the functions compiled in the library, which might not 916// have had the debug mode enabled when built. However, some extern declarations 917// need to be used, because code correctness depends on it (several instances 918// in the <locale>). Those special declarations are declared with 919// _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE, which is enabled even 920// when the debug mode is enabled. 921#ifndef _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE 922# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) extern template __VA_ARGS__; 923#endif 924 925#ifndef _LIBCPP_EXTERN_TEMPLATE_DEFINE 926#define _LIBCPP_EXTERN_TEMPLATE_DEFINE(...) template __VA_ARGS__; 927#endif 928 929#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 930 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 931#define _LIBCPP_LOCALE__L_EXTENSIONS 1 932#endif 933 934#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 935// Most unix variants have catopen. These are the specific ones that don't. 936# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 937# define _LIBCPP_HAS_CATOPEN 1 938# endif 939#endif 940 941#ifdef __FreeBSD__ 942#define _DECLARE_C99_LDBL_MATH 1 943#endif 944 945// If we are getting operator new from the MSVC CRT, then allocation overloads 946// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 947#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 948# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 949#elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) 950 // We're deferring to Microsoft's STL to provide aligned new et al. We don't 951 // have it unless the language feature test macro is defined. 952# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 953#elif defined(__MVS__) 954# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 955#endif 956 957#if defined(__APPLE__) 958# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 959 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 960# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 961# endif 962#endif // defined(__APPLE__) 963 964#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 965 (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_NO_HAS_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_NO_HAS_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_SUPPRESS_DEPRECATED_PUSH) && \ 1030 (defined(_LIBCPP_COMPILER_CLANG) || defined(_LIBCPP_COMPILER_GCC)) 1031# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \ 1032 _Pragma("GCC diagnostic push") \ 1033 _Pragma("GCC diagnostic ignored \"-Wdeprecated\"") 1034# define _LIBCPP_SUPPRESS_DEPRECATED_POP \ 1035 _Pragma("GCC diagnostic pop") 1036#endif 1037#if !defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH) 1038# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH 1039# define _LIBCPP_SUPPRESS_DEPRECATED_POP 1040#endif 1041 1042#if _LIBCPP_STD_VER <= 11 1043# define _LIBCPP_EXPLICIT_AFTER_CXX11 1044#else 1045# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1046#endif 1047 1048#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1049# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1050#else 1051# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1052#endif 1053 1054#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1055# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1056#else 1057# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1058#endif 1059 1060#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1061# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1062#else 1063# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1064#endif 1065 1066// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 1067// NODISCARD macros to the correct attribute. 1068#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1069# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 1070#elif defined(_LIBCPP_COMPILER_CLANG) && !defined(_LIBCPP_CXX03_LANG) 1071# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 1072#else 1073// We can't use GCC's [[gnu::warn_unused_result]] and 1074// __attribute__((warn_unused_result)), because GCC does not silence them via 1075// (void) cast. 1076# define _LIBCPP_NODISCARD_ATTRIBUTE 1077#endif 1078 1079// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1080// specified as such as an extension. 1081#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1082# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1083#else 1084# define _LIBCPP_NODISCARD_EXT 1085#endif 1086 1087#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1088 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1089# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1090#else 1091# define _LIBCPP_NODISCARD_AFTER_CXX17 1092#endif 1093 1094#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1095# define _LIBCPP_INLINE_VAR inline 1096#else 1097# define _LIBCPP_INLINE_VAR 1098#endif 1099 1100#ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG 1101#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1102#define _LIBCPP_CONSTEXPR_IF_NODEBUG 1103#else 1104#define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1105#endif 1106#endif 1107 1108#if __has_attribute(no_destroy) 1109# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__)) 1110#else 1111# define _LIBCPP_NO_DESTROY 1112#endif 1113 1114#ifndef _LIBCPP_HAS_NO_ASAN 1115extern "C" _LIBCPP_FUNC_VIS void __sanitizer_annotate_contiguous_container( 1116 const void *, const void *, const void *, const void *); 1117#endif 1118 1119// Try to find out if RTTI is disabled. 1120#if defined(_LIBCPP_COMPILER_CLANG) && !__has_feature(cxx_rtti) 1121# define _LIBCPP_NO_RTTI 1122#elif defined(__GNUC__) && !defined(__GXX_RTTI) 1123# define _LIBCPP_NO_RTTI 1124#elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1125# define _LIBCPP_NO_RTTI 1126#endif 1127 1128#ifndef _LIBCPP_WEAK 1129#define _LIBCPP_WEAK __attribute__((__weak__)) 1130#endif 1131 1132// Thread API 1133#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1134 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1135 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1136 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1137# if defined(__FreeBSD__) || \ 1138 defined(__wasi__) || \ 1139 defined(__NetBSD__) || \ 1140 defined(__OpenBSD__) || \ 1141 defined(__NuttX__) || \ 1142 defined(__linux__) || \ 1143 defined(__GNU__) || \ 1144 defined(__APPLE__) || \ 1145 defined(__CloudABI__) || \ 1146 defined(__sun__) || \ 1147 defined(__MVS__) || \ 1148 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1149# define _LIBCPP_HAS_THREAD_API_PTHREAD 1150# elif defined(__Fuchsia__) 1151 // TODO(44575): Switch to C11 thread API when possible. 1152# define _LIBCPP_HAS_THREAD_API_PTHREAD 1153# elif defined(_LIBCPP_WIN32API) 1154# define _LIBCPP_HAS_THREAD_API_WIN32 1155# else 1156# error "No thread API" 1157# endif // _LIBCPP_HAS_THREAD_API 1158#endif // _LIBCPP_HAS_NO_THREADS 1159 1160#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1161#if defined(__ANDROID__) && __ANDROID_API__ >= 30 1162#define _LIBCPP_HAS_COND_CLOCKWAIT 1163#elif defined(_LIBCPP_GLIBC_PREREQ) 1164#if _LIBCPP_GLIBC_PREREQ(2, 30) 1165#define _LIBCPP_HAS_COND_CLOCKWAIT 1166#endif 1167#endif 1168#endif 1169 1170#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1171#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1172 _LIBCPP_HAS_NO_THREADS is not defined. 1173#endif 1174 1175#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1176#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1177 _LIBCPP_HAS_NO_THREADS is defined. 1178#endif 1179 1180#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1181#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1182 _LIBCPP_HAS_NO_THREADS is defined. 1183#endif 1184 1185#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(__STDCPP_THREADS__) 1186#define __STDCPP_THREADS__ 1 1187#endif 1188 1189// The glibc and Bionic implementation of pthreads implements 1190// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 1191// mutexes have no destroy mechanism. 1192// 1193// This optimization can't be performed on Apple platforms, where 1194// pthread_mutex_destroy can allow the kernel to release resources. 1195// See https://llvm.org/D64298 for details. 1196// 1197// TODO(EricWF): Enable this optimization on Bionic after speaking to their 1198// respective stakeholders. 1199#if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) \ 1200 || (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) \ 1201 || defined(_LIBCPP_HAS_THREAD_API_WIN32) 1202# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 1203#endif 1204 1205// Destroying a condvar is a nop on Windows. 1206// 1207// This optimization can't be performed on Apple platforms, where 1208// pthread_cond_destroy can allow the kernel to release resources. 1209// See https://llvm.org/D64298 for details. 1210// 1211// TODO(EricWF): This is potentially true for some pthread implementations 1212// as well. 1213#if (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) || \ 1214 defined(_LIBCPP_HAS_THREAD_API_WIN32) 1215# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 1216#endif 1217 1218// Systems that use capability-based security (FreeBSD with Capsicum, 1219// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1220// Functions like open(), rename(), unlink() and stat() should not be 1221// used, as they attempt to access the global filesystem namespace. 1222#ifdef __CloudABI__ 1223#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1224#endif 1225 1226// CloudABI is intended for running networked services. Processes do not 1227// have standard input and output channels. 1228#ifdef __CloudABI__ 1229#define _LIBCPP_HAS_NO_STDIN 1230#define _LIBCPP_HAS_NO_STDOUT 1231#endif 1232 1233// Some systems do not provide gets() in their C library, for security reasons. 1234#ifndef _LIBCPP_C_HAS_NO_GETS 1235# if defined(_LIBCPP_MSVCRT) || \ 1236 (defined(__FreeBSD_version) && __FreeBSD_version >= 1300043) || \ 1237 defined(__OpenBSD__) 1238# define _LIBCPP_C_HAS_NO_GETS 1239# endif 1240#endif 1241 1242#if defined(__BIONIC__) || defined(__CloudABI__) || defined(__NuttX__) || \ 1243 defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC) || \ 1244 defined(__MVS__) || defined(__OpenBSD__) 1245#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1246#endif 1247 1248// Thread-unsafe functions such as strtok() and localtime() 1249// are not available. 1250#ifdef __CloudABI__ 1251#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1252#endif 1253 1254#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1255# define _LIBCPP_HAS_C_ATOMIC_IMP 1256#elif defined(_LIBCPP_COMPILER_GCC) 1257# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1258#endif 1259 1260#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && \ 1261 !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) && \ 1262 !defined(_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP)) \ 1263 || defined(_LIBCPP_HAS_NO_THREADS) 1264# define _LIBCPP_HAS_NO_ATOMIC_HEADER 1265#else 1266# ifndef _LIBCPP_ATOMIC_FLAG_TYPE 1267# define _LIBCPP_ATOMIC_FLAG_TYPE bool 1268# endif 1269# ifdef _LIBCPP_FREESTANDING 1270# define _LIBCPP_ATOMIC_ONLY_USE_BUILTINS 1271# endif 1272#endif 1273 1274#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1275#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1276#endif 1277 1278#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1279# if defined(__clang__) && __has_attribute(acquire_capability) 1280// Work around the attribute handling in clang. When both __declspec and 1281// __attribute__ are present, the processing goes awry preventing the definition 1282// of the types. 1283# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1284# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1285# endif 1286# endif 1287#endif 1288 1289#ifndef _LIBCPP_THREAD_SAFETY_ANNOTATION 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#endif // _LIBCPP_THREAD_SAFETY_ANNOTATION 1296 1297#if __has_attribute(require_constant_initialization) 1298# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1299#else 1300# define _LIBCPP_SAFE_STATIC 1301#endif 1302 1303#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1304#define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1305#endif 1306 1307#if !__has_builtin(__builtin_is_constant_evaluated) && _GNUC_VER < 900 1308#define _LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED 1309#endif 1310 1311#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1312# if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1313# define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1314# endif 1315#endif 1316 1317#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1318# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1319 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1320# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1321 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1322#else 1323# define _LIBCPP_DIAGNOSE_WARNING(...) 1324# define _LIBCPP_DIAGNOSE_ERROR(...) 1325#endif 1326 1327// Use a function like macro to imply that it must be followed by a semicolon 1328#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1329# define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1330#elif __has_cpp_attribute(clang::fallthrough) 1331# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1332#elif __has_attribute(fallthrough) || _GNUC_VER >= 700 1333# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1334#else 1335# define _LIBCPP_FALLTHROUGH() ((void)0) 1336#endif 1337 1338#if __has_attribute(__nodebug__) 1339#define _LIBCPP_NODEBUG __attribute__((__nodebug__)) 1340#else 1341#define _LIBCPP_NODEBUG 1342#endif 1343 1344#ifndef _LIBCPP_NODEBUG_TYPE 1345#if __has_attribute(__nodebug__) && \ 1346 (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 900) 1347#define _LIBCPP_NODEBUG_TYPE __attribute__((nodebug)) 1348#else 1349#define _LIBCPP_NODEBUG_TYPE 1350#endif 1351#endif // !defined(_LIBCPP_NODEBUG_TYPE) 1352 1353#if __has_attribute(__preferred_name__) 1354#define _LIBCPP_PREFERRED_NAME(x) __attribute__((__preferred_name__(x))) 1355#else 1356#define _LIBCPP_PREFERRED_NAME(x) 1357#endif 1358 1359#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1360 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1361# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1362#else 1363# define _LIBCPP_DECLSPEC_EMPTY_BASES 1364#endif 1365 1366#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1367#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1368#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1369#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1370#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1371#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1372 1373#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1374#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1375#endif 1376 1377#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1378#define _LIBCPP_HAS_NO_IS_AGGREGATE 1379#endif 1380 1381#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1382#define _LIBCPP_HAS_NO_COROUTINES 1383#endif 1384 1385#if !defined(__cpp_impl_three_way_comparison) || __cpp_impl_three_way_comparison < 201907L 1386#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1387#endif 1388 1389#if defined(_LIBCPP_COMPILER_IBM) 1390#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1391#endif 1392 1393#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1394# define _LIBCPP_PUSH_MACROS 1395# define _LIBCPP_POP_MACROS 1396#else 1397 // Don't warn about macro conflicts when we can restore them at the 1398 // end of the header. 1399# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1400# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1401# endif 1402# if defined(_LIBCPP_COMPILER_MSVC) 1403# define _LIBCPP_PUSH_MACROS \ 1404 __pragma(push_macro("min")) \ 1405 __pragma(push_macro("max")) 1406# define _LIBCPP_POP_MACROS \ 1407 __pragma(pop_macro("min")) \ 1408 __pragma(pop_macro("max")) 1409# else 1410# define _LIBCPP_PUSH_MACROS \ 1411 _Pragma("push_macro(\"min\")") \ 1412 _Pragma("push_macro(\"max\")") 1413# define _LIBCPP_POP_MACROS \ 1414 _Pragma("pop_macro(\"min\")") \ 1415 _Pragma("pop_macro(\"max\")") 1416# endif 1417#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1418 1419#ifndef _LIBCPP_NO_AUTO_LINK 1420# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1421# if defined(_DLL) 1422# pragma comment(lib, "c++.lib") 1423# else 1424# pragma comment(lib, "libc++.lib") 1425# endif 1426# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1427#endif // _LIBCPP_NO_AUTO_LINK 1428 1429#define _LIBCPP_UNUSED_VAR(x) ((void)(x)) 1430 1431// Configures the fopen close-on-exec mode character, if any. This string will 1432// be appended to any mode string used by fstream for fopen/fdopen. 1433// 1434// Not all platforms support this, but it helps avoid fd-leaks on platforms that 1435// do. 1436#if defined(__BIONIC__) 1437# define _LIBCPP_FOPEN_CLOEXEC_MODE "e" 1438#else 1439# define _LIBCPP_FOPEN_CLOEXEC_MODE 1440#endif 1441 1442#ifdef _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 1443#define _LIBCPP_BUILTIN_CONSTANT_P(x) __builtin_constant_p(x) 1444#else 1445#define _LIBCPP_BUILTIN_CONSTANT_P(x) false 1446#endif 1447 1448// Support for _FILE_OFFSET_BITS=64 landed gradually in Android, so the full set 1449// of functions used in cstdio may not be available for low API levels when 1450// using 64-bit file offsets on LP32. 1451#if defined(__BIONIC__) && defined(__USE_FILE_OFFSET64) && __ANDROID_API__ < 24 1452#define _LIBCPP_HAS_NO_FGETPOS_FSETPOS 1453#endif 1454 1455#if __has_attribute(init_priority) 1456# define _LIBCPP_INIT_PRIORITY_MAX __attribute__((init_priority(101))) 1457#else 1458# define _LIBCPP_INIT_PRIORITY_MAX 1459#endif 1460 1461#if defined(__GNUC__) || defined(__clang__) 1462#define _LIBCPP_FORMAT_PRINTF(a, b) \ 1463 __attribute__((__format__(__printf__, a, b))) 1464#else 1465#define _LIBCPP_FORMAT_PRINTF(a, b) 1466#endif 1467 1468#endif // __cplusplus 1469 1470#endif // _LIBCPP_CONFIG 1471