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 12000 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_ENUM_VIS 644 645#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 646 647#ifndef _LIBCPP_HIDDEN 648# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 649# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 650# else 651# define _LIBCPP_HIDDEN 652# endif 653#endif 654 655#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 656# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 657// The inline should be removed once PR32114 is resolved 658# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 659# else 660# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 661# endif 662#endif 663 664#ifndef _LIBCPP_FUNC_VIS 665# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 666# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 667# else 668# define _LIBCPP_FUNC_VIS 669# endif 670#endif 671 672#ifndef _LIBCPP_TYPE_VIS 673# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 674# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 675# else 676# define _LIBCPP_TYPE_VIS 677# endif 678#endif 679 680#ifndef _LIBCPP_TEMPLATE_VIS 681# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 682# if __has_attribute(__type_visibility__) 683# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 684# else 685# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 686# endif 687# else 688# define _LIBCPP_TEMPLATE_VIS 689# endif 690#endif 691 692#ifndef _LIBCPP_EXPORTED_FROM_ABI 693# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 694# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 695# else 696# define _LIBCPP_EXPORTED_FROM_ABI 697# endif 698#endif 699 700#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 701#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 702#endif 703 704#ifndef _LIBCPP_EXCEPTION_ABI 705# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 706# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 707# else 708# define _LIBCPP_EXCEPTION_ABI 709# endif 710#endif 711 712#ifndef _LIBCPP_ENUM_VIS 713# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 714# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 715# else 716# define _LIBCPP_ENUM_VIS 717# endif 718#endif 719 720#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 721# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 722# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 723# else 724# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 725# endif 726#endif 727 728#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 729#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 730#endif 731 732#if __has_attribute(internal_linkage) 733# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 734#else 735# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 736#endif 737 738#if __has_attribute(exclude_from_explicit_instantiation) 739# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 740#else 741 // Try to approximate the effect of exclude_from_explicit_instantiation 742 // (which is that entities are not assumed to be provided by explicit 743 // template instantiations in the dylib) by always inlining those entities. 744# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 745#endif 746 747#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 748# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 749# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 750# else 751# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 752# endif 753#endif 754 755#ifndef _LIBCPP_HIDE_FROM_ABI 756# if _LIBCPP_HIDE_FROM_ABI_PER_TU 757# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 758# else 759# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 760# endif 761#endif 762 763#ifdef _LIBCPP_BUILDING_LIBRARY 764# if _LIBCPP_ABI_VERSION > 1 765# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 766# else 767# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 768# endif 769#else 770# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 771#endif 772 773// Just so we can migrate to the new macros gradually. 774#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 775 776// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 777#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 778#define _LIBCPP_END_NAMESPACE_STD } } 779#define _VSTD std::_LIBCPP_ABI_NAMESPACE 780_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 781 782#if _LIBCPP_STD_VER >= 17 783#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 784 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 785#else 786#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 787 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 788#endif 789 790#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 791 _LIBCPP_END_NAMESPACE_STD } } 792 793#define _VSTD_FS _VSTD::__fs::filesystem 794 795#ifndef _LIBCPP_PREFERRED_OVERLOAD 796# if __has_attribute(__enable_if__) 797# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 798# endif 799#endif 800 801#ifndef _LIBCPP_HAS_NO_NOEXCEPT 802# define _NOEXCEPT noexcept 803# define _NOEXCEPT_(x) noexcept(x) 804#else 805# define _NOEXCEPT throw() 806# define _NOEXCEPT_(x) 807#endif 808 809#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 810typedef unsigned short char16_t; 811typedef unsigned int char32_t; 812#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 813 814#ifndef __SIZEOF_INT128__ 815#define _LIBCPP_HAS_NO_INT128 816#endif 817 818#ifdef _LIBCPP_CXX03_LANG 819# define static_assert(...) _Static_assert(__VA_ARGS__) 820# define decltype(...) __decltype(__VA_ARGS__) 821#endif // _LIBCPP_CXX03_LANG 822 823#ifdef _LIBCPP_CXX03_LANG 824# define _LIBCPP_CONSTEXPR 825#else 826# define _LIBCPP_CONSTEXPR constexpr 827#endif 828 829#ifndef __cpp_consteval 830# define _LIBCPP_CONSTEVAL _LIBCPP_CONSTEXPR 831#else 832# define _LIBCPP_CONSTEVAL consteval 833#endif 834 835#ifdef _LIBCPP_CXX03_LANG 836# define _LIBCPP_DEFAULT {} 837#else 838# define _LIBCPP_DEFAULT = default; 839#endif 840 841#ifdef _LIBCPP_CXX03_LANG 842# define _LIBCPP_EQUAL_DELETE 843#else 844# define _LIBCPP_EQUAL_DELETE = delete 845#endif 846 847#ifdef __GNUC__ 848# define _LIBCPP_NOALIAS __attribute__((__malloc__)) 849#else 850# define _LIBCPP_NOALIAS 851#endif 852 853#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 854 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 855# define _LIBCPP_EXPLICIT explicit 856#else 857# define _LIBCPP_EXPLICIT 858#endif 859 860#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 861# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 862# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 863 __lx __v_; \ 864 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 865 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 866 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 867 }; 868#else // _LIBCPP_HAS_NO_STRONG_ENUMS 869# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 870# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 871#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 872 873// _LIBCPP_DEBUG potential values: 874// - undefined: No assertions. This is the default. 875// - 0: Basic assertions 876// - 1: Basic assertions + iterator validity checks. 877#if !defined(_LIBCPP_DEBUG) 878# define _LIBCPP_DEBUG_LEVEL 0 879#elif _LIBCPP_DEBUG == 0 880# define _LIBCPP_DEBUG_LEVEL 1 881#elif _LIBCPP_DEBUG == 1 882# define _LIBCPP_DEBUG_LEVEL 2 883#else 884# error Supported values for _LIBCPP_DEBUG are 0 and 1 885#endif 886 887// _LIBCPP_DEBUG_LEVEL is always defined to one of [0, 1, 2] at this point 888#if _LIBCPP_DEBUG_LEVEL >= 1 && !defined(_LIBCPP_DISABLE_EXTERN_TEMPLATE) 889# define _LIBCPP_EXTERN_TEMPLATE(...) 890#endif 891 892#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 893# define _LIBCPP_EXTERN_TEMPLATE(...) 894# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) 895#endif 896 897#ifndef _LIBCPP_EXTERN_TEMPLATE 898#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 899#endif 900 901// When the Debug mode is enabled, we disable extern declarations because we 902// don't want to use the functions compiled in the library, which might not 903// have had the debug mode enabled when built. However, some extern declarations 904// need to be used, because code correctness depends on it (several instances 905// in the <locale>). Those special declarations are declared with 906// _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE, which is enabled even 907// when the debug mode is enabled. 908#ifndef _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE 909# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) extern template __VA_ARGS__; 910#endif 911 912#ifndef _LIBCPP_EXTERN_TEMPLATE_DEFINE 913#define _LIBCPP_EXTERN_TEMPLATE_DEFINE(...) template __VA_ARGS__; 914#endif 915 916#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 917 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 918#define _LIBCPP_LOCALE__L_EXTENSIONS 1 919#endif 920 921#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 922// Most unix variants have catopen. These are the specific ones that don't. 923# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 924# define _LIBCPP_HAS_CATOPEN 1 925# endif 926#endif 927 928#ifdef __FreeBSD__ 929#define _DECLARE_C99_LDBL_MATH 1 930#endif 931 932// If we are getting operator new from the MSVC CRT, then allocation overloads 933// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 934#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 935# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 936#elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) 937 // We're deferring to Microsoft's STL to provide aligned new et al. We don't 938 // have it unless the language feature test macro is defined. 939# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 940#elif defined(__MVS__) 941# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 942#endif 943 944#if defined(__APPLE__) 945# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 946 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 947# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 948# endif 949#endif // defined(__APPLE__) 950 951#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 952 (defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 953 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606)) 954# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 955#endif 956 957#if defined(__APPLE__) || defined(__FreeBSD__) 958#define _LIBCPP_HAS_DEFAULTRUNELOCALE 959#endif 960 961#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 962#define _LIBCPP_WCTYPE_IS_MASK 963#endif 964 965#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) 966#define _LIBCPP_NO_HAS_CHAR8_T 967#endif 968 969// Deprecation macros. 970// 971// Deprecations warnings are always enabled, except when users explicitly opt-out 972// by defining _LIBCPP_DISABLE_DEPRECATION_WARNINGS. 973#if !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) 974# if __has_attribute(deprecated) 975# define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 976# elif _LIBCPP_STD_VER > 11 977# define _LIBCPP_DEPRECATED [[deprecated]] 978# else 979# define _LIBCPP_DEPRECATED 980# endif 981#else 982# define _LIBCPP_DEPRECATED 983#endif 984 985#if !defined(_LIBCPP_CXX03_LANG) 986# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 987#else 988# define _LIBCPP_DEPRECATED_IN_CXX11 989#endif 990 991#if _LIBCPP_STD_VER >= 14 992# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 993#else 994# define _LIBCPP_DEPRECATED_IN_CXX14 995#endif 996 997#if _LIBCPP_STD_VER >= 17 998# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 999#else 1000# define _LIBCPP_DEPRECATED_IN_CXX17 1001#endif 1002 1003#if _LIBCPP_STD_VER > 17 1004# define _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_DEPRECATED 1005#else 1006# define _LIBCPP_DEPRECATED_IN_CXX20 1007#endif 1008 1009#if !defined(_LIBCPP_NO_HAS_CHAR8_T) 1010# define _LIBCPP_DEPRECATED_WITH_CHAR8_T _LIBCPP_DEPRECATED 1011#else 1012# define _LIBCPP_DEPRECATED_WITH_CHAR8_T 1013#endif 1014 1015// Macros to enter and leave a state where deprecation warnings are suppressed. 1016#if !defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH) && \ 1017 (defined(_LIBCPP_COMPILER_CLANG) || defined(_LIBCPP_COMPILER_GCC)) 1018# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \ 1019 _Pragma("GCC diagnostic push") \ 1020 _Pragma("GCC diagnostic ignored \"-Wdeprecated\"") 1021# define _LIBCPP_SUPPRESS_DEPRECATED_POP \ 1022 _Pragma("GCC diagnostic pop") 1023#endif 1024#if !defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH) 1025# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH 1026# define _LIBCPP_SUPPRESS_DEPRECATED_POP 1027#endif 1028 1029#if _LIBCPP_STD_VER <= 11 1030# define _LIBCPP_EXPLICIT_AFTER_CXX11 1031#else 1032# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1033#endif 1034 1035#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1036# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1037#else 1038# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1039#endif 1040 1041#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1042# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1043#else 1044# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1045#endif 1046 1047#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1048# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1049#else 1050# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1051#endif 1052 1053// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 1054// NODISCARD macros to the correct attribute. 1055#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1056# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 1057#elif defined(_LIBCPP_COMPILER_CLANG) && !defined(_LIBCPP_CXX03_LANG) 1058# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 1059#else 1060// We can't use GCC's [[gnu::warn_unused_result]] and 1061// __attribute__((warn_unused_result)), because GCC does not silence them via 1062// (void) cast. 1063# define _LIBCPP_NODISCARD_ATTRIBUTE 1064#endif 1065 1066// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1067// specified as such as an extension. 1068#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1069# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1070#else 1071# define _LIBCPP_NODISCARD_EXT 1072#endif 1073 1074#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1075 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1076# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1077#else 1078# define _LIBCPP_NODISCARD_AFTER_CXX17 1079#endif 1080 1081#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1082# define _LIBCPP_INLINE_VAR inline 1083#else 1084# define _LIBCPP_INLINE_VAR 1085#endif 1086 1087#ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG 1088#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1089#define _LIBCPP_CONSTEXPR_IF_NODEBUG 1090#else 1091#define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1092#endif 1093#endif 1094 1095#if __has_attribute(no_destroy) 1096# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__)) 1097#else 1098# define _LIBCPP_NO_DESTROY 1099#endif 1100 1101#ifndef _LIBCPP_HAS_NO_ASAN 1102extern "C" _LIBCPP_FUNC_VIS void __sanitizer_annotate_contiguous_container( 1103 const void *, const void *, const void *, const void *); 1104#endif 1105 1106// Try to find out if RTTI is disabled. 1107#if defined(_LIBCPP_COMPILER_CLANG) && !__has_feature(cxx_rtti) 1108# define _LIBCPP_NO_RTTI 1109#elif defined(__GNUC__) && !defined(__GXX_RTTI) 1110# define _LIBCPP_NO_RTTI 1111#elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1112# define _LIBCPP_NO_RTTI 1113#endif 1114 1115#ifndef _LIBCPP_WEAK 1116#define _LIBCPP_WEAK __attribute__((__weak__)) 1117#endif 1118 1119// Thread API 1120#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1121 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1122 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1123 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1124# if defined(__FreeBSD__) || \ 1125 defined(__wasi__) || \ 1126 defined(__NetBSD__) || \ 1127 defined(__OpenBSD__) || \ 1128 defined(__NuttX__) || \ 1129 defined(__linux__) || \ 1130 defined(__GNU__) || \ 1131 defined(__APPLE__) || \ 1132 defined(__CloudABI__) || \ 1133 defined(__sun__) || \ 1134 defined(__MVS__) || \ 1135 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1136# define _LIBCPP_HAS_THREAD_API_PTHREAD 1137# elif defined(__Fuchsia__) 1138 // TODO(44575): Switch to C11 thread API when possible. 1139# define _LIBCPP_HAS_THREAD_API_PTHREAD 1140# elif defined(_LIBCPP_WIN32API) 1141# define _LIBCPP_HAS_THREAD_API_WIN32 1142# else 1143# error "No thread API" 1144# endif // _LIBCPP_HAS_THREAD_API 1145#endif // _LIBCPP_HAS_NO_THREADS 1146 1147#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1148#if defined(__ANDROID__) && __ANDROID_API__ >= 30 1149#define _LIBCPP_HAS_COND_CLOCKWAIT 1150#elif defined(_LIBCPP_GLIBC_PREREQ) 1151#if _LIBCPP_GLIBC_PREREQ(2, 30) 1152#define _LIBCPP_HAS_COND_CLOCKWAIT 1153#endif 1154#endif 1155#endif 1156 1157#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1158#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1159 _LIBCPP_HAS_NO_THREADS is not defined. 1160#endif 1161 1162#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1163#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1164 _LIBCPP_HAS_NO_THREADS is defined. 1165#endif 1166 1167#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1168#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1169 _LIBCPP_HAS_NO_THREADS is defined. 1170#endif 1171 1172#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(__STDCPP_THREADS__) 1173#define __STDCPP_THREADS__ 1 1174#endif 1175 1176// The glibc and Bionic implementation of pthreads implements 1177// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 1178// mutexes have no destroy mechanism. 1179// 1180// This optimization can't be performed on Apple platforms, where 1181// pthread_mutex_destroy can allow the kernel to release resources. 1182// See https://llvm.org/D64298 for details. 1183// 1184// TODO(EricWF): Enable this optimization on Bionic after speaking to their 1185// respective stakeholders. 1186#if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) \ 1187 || (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) \ 1188 || defined(_LIBCPP_HAS_THREAD_API_WIN32) 1189# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 1190#endif 1191 1192// Destroying a condvar is a nop on Windows. 1193// 1194// This optimization can't be performed on Apple platforms, where 1195// pthread_cond_destroy can allow the kernel to release resources. 1196// See https://llvm.org/D64298 for details. 1197// 1198// TODO(EricWF): This is potentially true for some pthread implementations 1199// as well. 1200#if (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) || \ 1201 defined(_LIBCPP_HAS_THREAD_API_WIN32) 1202# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 1203#endif 1204 1205// Systems that use capability-based security (FreeBSD with Capsicum, 1206// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1207// Functions like open(), rename(), unlink() and stat() should not be 1208// used, as they attempt to access the global filesystem namespace. 1209#ifdef __CloudABI__ 1210#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1211#endif 1212 1213// CloudABI is intended for running networked services. Processes do not 1214// have standard input and output channels. 1215#ifdef __CloudABI__ 1216#define _LIBCPP_HAS_NO_STDIN 1217#define _LIBCPP_HAS_NO_STDOUT 1218#endif 1219 1220// Some systems do not provide gets() in their C library, for security reasons. 1221#ifndef _LIBCPP_C_HAS_NO_GETS 1222# if defined(_LIBCPP_MSVCRT) || \ 1223 (defined(__FreeBSD_version) && __FreeBSD_version >= 1300043) || \ 1224 defined(__OpenBSD__) 1225# define _LIBCPP_C_HAS_NO_GETS 1226# endif 1227#endif 1228 1229#if defined(__BIONIC__) || defined(__CloudABI__) || defined(__NuttX__) || \ 1230 defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC) || \ 1231 defined(__MVS__) || defined(__OpenBSD__) 1232#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1233#endif 1234 1235// Thread-unsafe functions such as strtok() and localtime() 1236// are not available. 1237#ifdef __CloudABI__ 1238#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1239#endif 1240 1241#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1242# define _LIBCPP_HAS_C_ATOMIC_IMP 1243#elif defined(_LIBCPP_COMPILER_GCC) 1244# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1245#endif 1246 1247#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && \ 1248 !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) && \ 1249 !defined(_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP)) \ 1250 || defined(_LIBCPP_HAS_NO_THREADS) 1251# define _LIBCPP_HAS_NO_ATOMIC_HEADER 1252#else 1253# ifndef _LIBCPP_ATOMIC_FLAG_TYPE 1254# define _LIBCPP_ATOMIC_FLAG_TYPE bool 1255# endif 1256# ifdef _LIBCPP_FREESTANDING 1257# define _LIBCPP_ATOMIC_ONLY_USE_BUILTINS 1258# endif 1259#endif 1260 1261#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1262#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1263#endif 1264 1265#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1266# if defined(__clang__) && __has_attribute(acquire_capability) 1267// Work around the attribute handling in clang. When both __declspec and 1268// __attribute__ are present, the processing goes awry preventing the definition 1269// of the types. 1270# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1271# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1272# endif 1273# endif 1274#endif 1275 1276#ifndef _LIBCPP_THREAD_SAFETY_ANNOTATION 1277# ifdef _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1278# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) __attribute__((x)) 1279# else 1280# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) 1281# endif 1282#endif // _LIBCPP_THREAD_SAFETY_ANNOTATION 1283 1284#if __has_attribute(require_constant_initialization) 1285# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1286#else 1287# define _LIBCPP_SAFE_STATIC 1288#endif 1289 1290#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1291#define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1292#endif 1293 1294#if !__has_builtin(__builtin_is_constant_evaluated) && _GNUC_VER < 900 1295#define _LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED 1296#endif 1297 1298#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1299# if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1300# define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1301# endif 1302#endif 1303 1304#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1305# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1306 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1307# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1308 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1309#else 1310# define _LIBCPP_DIAGNOSE_WARNING(...) 1311# define _LIBCPP_DIAGNOSE_ERROR(...) 1312#endif 1313 1314// Use a function like macro to imply that it must be followed by a semicolon 1315#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1316# define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1317#elif __has_cpp_attribute(clang::fallthrough) 1318# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1319#elif __has_attribute(fallthrough) || _GNUC_VER >= 700 1320# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1321#else 1322# define _LIBCPP_FALLTHROUGH() ((void)0) 1323#endif 1324 1325#if __has_attribute(__nodebug__) 1326#define _LIBCPP_NODEBUG __attribute__((__nodebug__)) 1327#else 1328#define _LIBCPP_NODEBUG 1329#endif 1330 1331#ifndef _LIBCPP_NODEBUG_TYPE 1332#if __has_attribute(__nodebug__) && \ 1333 (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 900) 1334#define _LIBCPP_NODEBUG_TYPE __attribute__((nodebug)) 1335#else 1336#define _LIBCPP_NODEBUG_TYPE 1337#endif 1338#endif // !defined(_LIBCPP_NODEBUG_TYPE) 1339 1340#if __has_attribute(__preferred_name__) 1341#define _LIBCPP_PREFERRED_NAME(x) __attribute__((__preferred_name__(x))) 1342#else 1343#define _LIBCPP_PREFERRED_NAME(x) 1344#endif 1345 1346#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1347 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1348# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1349#else 1350# define _LIBCPP_DECLSPEC_EMPTY_BASES 1351#endif 1352 1353#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1354#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1355#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1356#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1357#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1358#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1359 1360#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1361#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1362#endif 1363 1364#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1365#define _LIBCPP_HAS_NO_IS_AGGREGATE 1366#endif 1367 1368#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1369#define _LIBCPP_HAS_NO_COROUTINES 1370#endif 1371 1372#if !defined(__cpp_impl_three_way_comparison) || __cpp_impl_three_way_comparison < 201907L 1373#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1374#endif 1375 1376#if defined(_LIBCPP_COMPILER_IBM) 1377#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1378#endif 1379 1380#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1381# define _LIBCPP_PUSH_MACROS 1382# define _LIBCPP_POP_MACROS 1383#else 1384 // Don't warn about macro conflicts when we can restore them at the 1385 // end of the header. 1386# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1387# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1388# endif 1389# if defined(_LIBCPP_COMPILER_MSVC) 1390# define _LIBCPP_PUSH_MACROS \ 1391 __pragma(push_macro("min")) \ 1392 __pragma(push_macro("max")) 1393# define _LIBCPP_POP_MACROS \ 1394 __pragma(pop_macro("min")) \ 1395 __pragma(pop_macro("max")) 1396# else 1397# define _LIBCPP_PUSH_MACROS \ 1398 _Pragma("push_macro(\"min\")") \ 1399 _Pragma("push_macro(\"max\")") 1400# define _LIBCPP_POP_MACROS \ 1401 _Pragma("pop_macro(\"min\")") \ 1402 _Pragma("pop_macro(\"max\")") 1403# endif 1404#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1405 1406#ifndef _LIBCPP_NO_AUTO_LINK 1407# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1408# if defined(_DLL) 1409# pragma comment(lib, "c++.lib") 1410# else 1411# pragma comment(lib, "libc++.lib") 1412# endif 1413# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1414#endif // _LIBCPP_NO_AUTO_LINK 1415 1416#define _LIBCPP_UNUSED_VAR(x) ((void)(x)) 1417 1418// Configures the fopen close-on-exec mode character, if any. This string will 1419// be appended to any mode string used by fstream for fopen/fdopen. 1420// 1421// Not all platforms support this, but it helps avoid fd-leaks on platforms that 1422// do. 1423#if defined(__BIONIC__) 1424# define _LIBCPP_FOPEN_CLOEXEC_MODE "e" 1425#else 1426# define _LIBCPP_FOPEN_CLOEXEC_MODE 1427#endif 1428 1429#ifdef _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 1430#define _LIBCPP_BUILTIN_CONSTANT_P(x) __builtin_constant_p(x) 1431#else 1432#define _LIBCPP_BUILTIN_CONSTANT_P(x) false 1433#endif 1434 1435// Support for _FILE_OFFSET_BITS=64 landed gradually in Android, so the full set 1436// of functions used in cstdio may not be available for low API levels when 1437// using 64-bit file offsets on LP32. 1438#if defined(__BIONIC__) && defined(__USE_FILE_OFFSET64) && __ANDROID_API__ < 24 1439#define _LIBCPP_HAS_NO_FGETPOS_FSETPOS 1440#endif 1441 1442#if __has_attribute(init_priority) 1443# define _LIBCPP_INIT_PRIORITY_MAX __attribute__((init_priority(101))) 1444#else 1445# define _LIBCPP_INIT_PRIORITY_MAX 1446#endif 1447 1448#endif // __cplusplus 1449 1450#endif // _LIBCPP_CONFIG 1451