1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_CONFIG 11#define _LIBCPP_CONFIG 12 13#include <__config_site> 14 15#if defined(_MSC_VER) && !defined(__clang__) 16# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17# define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 18# endif 19#endif 20 21#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 22#pragma GCC system_header 23#endif 24 25#ifdef __cplusplus 26 27#define _LIBCPP_VERSION 14000 28 29#ifndef _LIBCPP_ABI_VERSION 30# define _LIBCPP_ABI_VERSION 1 31#endif 32 33#if __STDC_HOSTED__ == 0 34# define _LIBCPP_FREESTANDING 35#endif 36 37#ifndef _LIBCPP_STD_VER 38# if __cplusplus <= 201103L 39# define _LIBCPP_STD_VER 11 40# elif __cplusplus <= 201402L 41# define _LIBCPP_STD_VER 14 42# elif __cplusplus <= 201703L 43# define _LIBCPP_STD_VER 17 44# elif __cplusplus <= 202002L 45# define _LIBCPP_STD_VER 20 46# else 47# define _LIBCPP_STD_VER 21 // current year, or date of c++2b ratification 48# endif 49#endif // _LIBCPP_STD_VER 50 51#if defined(__ELF__) 52# define _LIBCPP_OBJECT_FORMAT_ELF 1 53#elif defined(__MACH__) 54# define _LIBCPP_OBJECT_FORMAT_MACHO 1 55#elif defined(_WIN32) 56# define _LIBCPP_OBJECT_FORMAT_COFF 1 57#elif defined(__wasm__) 58# define _LIBCPP_OBJECT_FORMAT_WASM 1 59#else 60 // ... add new file formats here ... 61#endif 62 63#if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 64// Change short string representation so that string data starts at offset 0, 65// improving its alignment in some cases. 66# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 67// Fix deque iterator type in order to support incomplete types. 68# define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 69// Fix undefined behavior in how std::list stores its linked nodes. 70# define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB 71// Fix undefined behavior in how __tree stores its end and parent nodes. 72# define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB 73// Fix undefined behavior in how __hash_table stores its pointer types. 74# define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB 75# define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB 76# define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE 77// Don't use a nullptr_t simulation type in C++03 instead using C++11 nullptr 78// provided under the alternate keyword __nullptr, which changes the mangling 79// of nullptr_t. This option is ABI incompatible with GCC in C++03 mode. 80# define _LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR 81// Define a key function for `bad_function_call` in the library, to centralize 82// its vtable and typeinfo to libc++ rather than having all other libraries 83// using that class define their own copies. 84# define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 85// Override the default return value of exception::what() for 86// bad_function_call::what() with a string that is specific to 87// bad_function_call (see http://wg21.link/LWG2233). This is an ABI break 88// because it changes the vtable layout of bad_function_call. 89# define _LIBCPP_ABI_BAD_FUNCTION_CALL_GOOD_WHAT_MESSAGE 90// Enable optimized version of __do_get_(un)signed which avoids redundant copies. 91# define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET 92// In C++20 and later, don't derive std::plus from std::binary_function, 93// nor std::negate from std::unary_function. 94# define _LIBCPP_ABI_NO_BINDER_BASES 95// Give reverse_iterator<T> one data member of type T, not two. 96// Also, in C++17 and later, don't derive iterator types from std::iterator. 97# define _LIBCPP_ABI_NO_ITERATOR_BASES 98// Use the smallest possible integer type to represent the index of the variant. 99// Previously libc++ used "unsigned int" exclusively. 100# define _LIBCPP_ABI_VARIANT_INDEX_TYPE_OPTIMIZATION 101// Unstable attempt to provide a more optimized std::function 102# define _LIBCPP_ABI_OPTIMIZED_FUNCTION 103// All the regex constants must be distinct and nonzero. 104# define _LIBCPP_ABI_REGEX_CONSTANTS_NONZERO 105// Use raw pointers, not wrapped ones, for std::span's iterator type. 106# define _LIBCPP_ABI_SPAN_POINTER_ITERATORS 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_1 135 136// Define a key function for `bad_function_call` in the library, to centralize 137// its vtable and typeinfo to libc++ rather than having all other libraries 138// using that class define their own copies. 139# define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 140#endif 141 142#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y 143#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) 144 145#ifndef _LIBCPP_ABI_NAMESPACE 146# define _LIBCPP_ABI_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION) 147#endif 148 149#if __cplusplus < 201103L 150#define _LIBCPP_CXX03_LANG 151#endif 152 153#ifndef __has_attribute 154#define __has_attribute(__x) 0 155#endif 156 157#ifndef __has_builtin 158#define __has_builtin(__x) 0 159#endif 160 161#ifndef __has_extension 162#define __has_extension(__x) 0 163#endif 164 165#ifndef __has_feature 166#define __has_feature(__x) 0 167#endif 168 169#ifndef __has_cpp_attribute 170#define __has_cpp_attribute(__x) 0 171#endif 172 173// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by 174// the compiler and '1' otherwise. 175#ifndef __is_identifier 176#define __is_identifier(__x) 1 177#endif 178 179#ifndef __has_declspec_attribute 180#define __has_declspec_attribute(__x) 0 181#endif 182 183#define __has_keyword(__x) !(__is_identifier(__x)) 184 185#ifndef __has_include 186#define __has_include(...) 0 187#endif 188 189#if defined(__apple_build_version__) 190# define _LIBCPP_COMPILER_CLANG_BASED 191# define _LIBCPP_APPLE_CLANG_VER (__apple_build_version__ / 10000) 192#elif defined(__clang__) 193# define _LIBCPP_COMPILER_CLANG_BASED 194# define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__) 195#elif defined(__GNUC__) 196# define _LIBCPP_COMPILER_GCC 197#elif defined(_MSC_VER) 198# define _LIBCPP_COMPILER_MSVC 199#elif defined(__IBMCPP__) 200# define _LIBCPP_COMPILER_IBM 201#endif 202 203#if defined(_LIBCPP_COMPILER_GCC) && __cplusplus < 201103L 204#error "libc++ does not support using GCC with C++03. Please enable C++11" 205#endif 206 207// FIXME: ABI detection should be done via compiler builtin macros. This 208// is just a placeholder until Clang implements such macros. For now assume 209// that Windows compilers pretending to be MSVC++ target the Microsoft ABI, 210// and allow the user to explicitly specify the ABI to handle cases where this 211// heuristic falls short. 212#if defined(_LIBCPP_ABI_FORCE_ITANIUM) && defined(_LIBCPP_ABI_FORCE_MICROSOFT) 213# error "Only one of _LIBCPP_ABI_FORCE_ITANIUM and _LIBCPP_ABI_FORCE_MICROSOFT can be defined" 214#elif defined(_LIBCPP_ABI_FORCE_ITANIUM) 215# define _LIBCPP_ABI_ITANIUM 216#elif defined(_LIBCPP_ABI_FORCE_MICROSOFT) 217# define _LIBCPP_ABI_MICROSOFT 218#else 219# if defined(_WIN32) && defined(_MSC_VER) 220# define _LIBCPP_ABI_MICROSOFT 221# else 222# define _LIBCPP_ABI_ITANIUM 223# endif 224#endif 225 226#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_NO_VCRUNTIME) 227# define _LIBCPP_ABI_VCRUNTIME 228#endif 229 230// Need to detect which libc we're using if we're on Linux. 231#if defined(__linux__) 232# include <features.h> 233# if defined(__GLIBC_PREREQ) 234# define _LIBCPP_GLIBC_PREREQ(a, b) __GLIBC_PREREQ(a, b) 235# else 236# define _LIBCPP_GLIBC_PREREQ(a, b) 0 237# endif // defined(__GLIBC_PREREQ) 238#endif // defined(__linux__) 239 240#ifdef __LITTLE_ENDIAN__ 241# if __LITTLE_ENDIAN__ 242# define _LIBCPP_LITTLE_ENDIAN 243# endif // __LITTLE_ENDIAN__ 244#endif // __LITTLE_ENDIAN__ 245 246#ifdef __BIG_ENDIAN__ 247# if __BIG_ENDIAN__ 248# define _LIBCPP_BIG_ENDIAN 249# endif // __BIG_ENDIAN__ 250#endif // __BIG_ENDIAN__ 251 252#ifdef __BYTE_ORDER__ 253# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 254# define _LIBCPP_LITTLE_ENDIAN 255# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 256# define _LIBCPP_BIG_ENDIAN 257# endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 258#endif // __BYTE_ORDER__ 259 260#ifdef __FreeBSD__ 261# include <sys/endian.h> 262# include <osreldate.h> 263# if _BYTE_ORDER == _LITTLE_ENDIAN 264# define _LIBCPP_LITTLE_ENDIAN 265# else // _BYTE_ORDER == _LITTLE_ENDIAN 266# define _LIBCPP_BIG_ENDIAN 267# endif // _BYTE_ORDER == _LITTLE_ENDIAN 268#endif // __FreeBSD__ 269 270#if defined(__NetBSD__) || defined(__OpenBSD__) 271# include <sys/endian.h> 272# if _BYTE_ORDER == _LITTLE_ENDIAN 273# define _LIBCPP_LITTLE_ENDIAN 274# else // _BYTE_ORDER == _LITTLE_ENDIAN 275# define _LIBCPP_BIG_ENDIAN 276# endif // _BYTE_ORDER == _LITTLE_ENDIAN 277#endif // defined(__NetBSD__) || defined(__OpenBSD__) 278 279#if defined(_WIN32) 280# define _LIBCPP_WIN32API 281# define _LIBCPP_LITTLE_ENDIAN 282# define _LIBCPP_SHORT_WCHAR 1 283// Both MinGW and native MSVC provide a "MSVC"-like environment 284# define _LIBCPP_MSVCRT_LIKE 285// If mingw not explicitly detected, assume using MS C runtime only if 286// a MS compatibility version is specified. 287# if defined(_MSC_VER) && !defined(__MINGW32__) 288# define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 289# endif 290# if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 291# define _LIBCPP_HAS_BITSCAN64 292# endif 293# define _LIBCPP_HAS_OPEN_WITH_WCHAR 294# if defined(_LIBCPP_MSVCRT) 295# define _LIBCPP_HAS_QUICK_EXIT 296# endif 297 298// Some CRT APIs are unavailable to store apps 299# if defined(WINAPI_FAMILY) 300# include <winapifamily.h> 301# if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 302 (!defined(WINAPI_PARTITION_SYSTEM) || \ 303 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 304# define _LIBCPP_WINDOWS_STORE_APP 305# endif 306# endif 307#endif // defined(_WIN32) 308 309#ifdef __sun__ 310# include <sys/isa_defs.h> 311# ifdef _LITTLE_ENDIAN 312# define _LIBCPP_LITTLE_ENDIAN 313# else 314# define _LIBCPP_BIG_ENDIAN 315# endif 316#endif // __sun__ 317 318#if defined(_AIX) && !defined(__64BIT__) 319 // The size of wchar is 2 byte on 32-bit mode on AIX. 320# define _LIBCPP_SHORT_WCHAR 1 321#endif 322 323#if defined(__OpenBSD__) 324 // Certain architectures provide arc4random(). Prefer using 325 // arc4random() over /dev/{u,}random to make it possible to obtain 326 // random data even when using sandboxing mechanisms such as chroots, 327 // Capsicum, etc. 328# define _LIBCPP_USING_ARC4_RANDOM 329#elif defined(__Fuchsia__) || defined(__wasi__) 330# define _LIBCPP_USING_GETENTROPY 331#elif defined(__native_client__) 332 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, 333 // including accesses to the special files under /dev. C++11's 334 // std::random_device is instead exposed through a NaCl syscall. 335# define _LIBCPP_USING_NACL_RANDOM 336#elif defined(_LIBCPP_WIN32API) 337# define _LIBCPP_USING_WIN32_RANDOM 338#else 339# define _LIBCPP_USING_DEV_RANDOM 340#endif 341 342#if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 343# include <endian.h> 344# if __BYTE_ORDER == __LITTLE_ENDIAN 345# define _LIBCPP_LITTLE_ENDIAN 346# elif __BYTE_ORDER == __BIG_ENDIAN 347# define _LIBCPP_BIG_ENDIAN 348# else // __BYTE_ORDER == __BIG_ENDIAN 349# error unable to determine endian 350# endif 351#endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 352 353#if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 354# define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 355#else 356# define _LIBCPP_NO_CFI 357#endif 358 359// If the compiler supports using_if_exists, pretend we have those functions and they'll 360// be picked up if the C library provides them. 361// 362// TODO: Once we drop support for Clang 12, we can assume the compiler supports using_if_exists 363// for platforms that don't have a conforming C11 library, so we can drop this whole thing. 364#if __has_attribute(using_if_exists) 365# define _LIBCPP_HAS_TIMESPEC_GET 366# define _LIBCPP_HAS_QUICK_EXIT 367# define _LIBCPP_HAS_ALIGNED_ALLOC 368#else 369#if (defined(__ISO_C_VISIBLE) && (__ISO_C_VISIBLE >= 2011)) || __cplusplus >= 201103L 370# if defined(__FreeBSD__) 371# define _LIBCPP_HAS_ALIGNED_ALLOC 372# define _LIBCPP_HAS_QUICK_EXIT 373# if __FreeBSD_version >= 1300064 || \ 374 (__FreeBSD_version >= 1201504 && __FreeBSD_version < 1300000) 375# define _LIBCPP_HAS_TIMESPEC_GET 376# endif 377# elif defined(__BIONIC__) 378# if __ANDROID_API__ >= 21 379# define _LIBCPP_HAS_QUICK_EXIT 380# endif 381# if __ANDROID_API__ >= 28 382# define _LIBCPP_HAS_ALIGNED_ALLOC 383# endif 384# if __ANDROID_API__ >= 29 385# define _LIBCPP_HAS_TIMESPEC_GET 386# endif 387# elif defined(__Fuchsia__) || defined(__wasi__) || defined(__NetBSD__) 388# define _LIBCPP_HAS_ALIGNED_ALLOC 389# define _LIBCPP_HAS_QUICK_EXIT 390# define _LIBCPP_HAS_TIMESPEC_GET 391# elif defined(__OpenBSD__) 392# define _LIBCPP_HAS_ALIGNED_ALLOC 393# define _LIBCPP_HAS_TIMESPEC_GET 394# elif defined(__linux__) 395# if !defined(_LIBCPP_HAS_MUSL_LIBC) 396# if _LIBCPP_GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 397# define _LIBCPP_HAS_QUICK_EXIT 398# endif 399# if _LIBCPP_GLIBC_PREREQ(2, 17) 400# define _LIBCPP_HAS_ALIGNED_ALLOC 401# define _LIBCPP_HAS_TIMESPEC_GET 402# endif 403# else // defined(_LIBCPP_HAS_MUSL_LIBC) 404# define _LIBCPP_HAS_ALIGNED_ALLOC 405# define _LIBCPP_HAS_QUICK_EXIT 406# define _LIBCPP_HAS_TIMESPEC_GET 407# endif 408# elif defined(_LIBCPP_MSVCRT) 409 // Using Microsoft's C Runtime library, not MinGW 410# define _LIBCPP_HAS_TIMESPEC_GET 411# elif defined(__APPLE__) 412 // timespec_get and aligned_alloc were introduced in macOS 10.15 and 413 // aligned releases 414# if ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 101500) || \ 415 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ >= 130000) || \ 416 (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ >= 130000) || \ 417 (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ >= 60000)) 418# define _LIBCPP_HAS_ALIGNED_ALLOC 419# define _LIBCPP_HAS_TIMESPEC_GET 420# endif 421# endif // __APPLE__ 422#endif 423#endif // __has_attribute(using_if_exists) 424 425#ifndef _LIBCPP_CXX03_LANG 426# define _LIBCPP_ALIGNOF(_Tp) alignof(_Tp) 427#elif defined(_LIBCPP_COMPILER_CLANG_BASED) 428# define _LIBCPP_ALIGNOF(_Tp) _Alignof(_Tp) 429#else 430# error "We don't know a correct way to implement alignof(T) in C++03 outside of Clang" 431#endif 432 433#define _LIBCPP_PREFERRED_ALIGNOF(_Tp) __alignof(_Tp) 434 435#if defined(_LIBCPP_COMPILER_CLANG_BASED) 436 437#if defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 438# error _LIBCPP_ALTERNATE_STRING_LAYOUT is deprecated, please use _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT instead 439#endif 440#if defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 441 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2) 442# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 443#endif 444 445#if __has_feature(cxx_alignas) 446# define _ALIGNAS_TYPE(x) alignas(x) 447# define _ALIGNAS(x) alignas(x) 448#else 449# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 450# define _ALIGNAS(x) __attribute__((__aligned__(x))) 451#endif 452 453#if __cplusplus < 201103L 454typedef __char16_t char16_t; 455typedef __char32_t char32_t; 456#endif 457 458#if !__has_feature(cxx_exceptions) 459# define _LIBCPP_NO_EXCEPTIONS 460#endif 461 462#if !(__has_feature(cxx_strong_enums)) 463#define _LIBCPP_HAS_NO_STRONG_ENUMS 464#endif 465 466#if __has_feature(cxx_attributes) 467# define _LIBCPP_NORETURN [[noreturn]] 468#else 469# define _LIBCPP_NORETURN __attribute__ ((noreturn)) 470#endif 471 472#if !(__has_feature(cxx_nullptr)) 473# if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 474# define nullptr __nullptr 475# else 476# define _LIBCPP_HAS_NO_NULLPTR 477# endif 478#endif 479 480// Objective-C++ features (opt-in) 481#if __has_feature(objc_arc) 482#define _LIBCPP_HAS_OBJC_ARC 483#endif 484 485#if __has_feature(objc_arc_weak) 486#define _LIBCPP_HAS_OBJC_ARC_WEAK 487#endif 488 489#if __has_extension(blocks) 490# define _LIBCPP_HAS_EXTENSION_BLOCKS 491#endif 492 493#if defined(_LIBCPP_HAS_EXTENSION_BLOCKS) && defined(__APPLE__) 494# define _LIBCPP_HAS_BLOCKS_RUNTIME 495#endif 496 497#if !(__has_feature(cxx_noexcept)) 498#define _LIBCPP_HAS_NO_NOEXCEPT 499#endif 500 501#if !__has_feature(address_sanitizer) 502#define _LIBCPP_HAS_NO_ASAN 503#endif 504 505// Allow for build-time disabling of unsigned integer sanitization 506#if __has_attribute(no_sanitize) 507#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 508#endif 509 510#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 511 512#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 513 514#elif defined(_LIBCPP_COMPILER_GCC) 515 516#define _ALIGNAS(x) __attribute__((__aligned__(x))) 517#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 518 519#define _LIBCPP_NORETURN __attribute__((noreturn)) 520 521#if !defined(__EXCEPTIONS) 522# define _LIBCPP_NO_EXCEPTIONS 523#endif 524 525#if !defined(__SANITIZE_ADDRESS__) 526#define _LIBCPP_HAS_NO_ASAN 527#endif 528 529#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 530 531#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 532 533#elif defined(_LIBCPP_COMPILER_MSVC) 534 535#define _LIBCPP_TOSTRING2(x) #x 536#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 537#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 538 539#if _MSC_VER < 1900 540#error "MSVC versions prior to Visual Studio 2015 are not supported" 541#endif 542 543#define __alignof__ __alignof 544#define _LIBCPP_NORETURN __declspec(noreturn) 545#define _ALIGNAS(x) __declspec(align(x)) 546#define _ALIGNAS_TYPE(x) alignas(x) 547 548#define _LIBCPP_WEAK 549 550#define _LIBCPP_HAS_NO_ASAN 551 552#define _LIBCPP_ALWAYS_INLINE __forceinline 553 554#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 555 556#define _LIBCPP_DISABLE_EXTENSION_WARNING 557 558#elif defined(_LIBCPP_COMPILER_IBM) 559 560#define _ALIGNAS(x) __attribute__((__aligned__(x))) 561#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 562#define _ATTRIBUTE(x) __attribute__((x)) 563#define _LIBCPP_NORETURN __attribute__((noreturn)) 564 565#define _LIBCPP_HAS_NO_UNICODE_CHARS 566 567#if defined(_AIX) 568#define __MULTILOCALE_API 569#endif 570 571#define _LIBCPP_HAS_NO_ASAN 572 573#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 574 575#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 576 577#define _LIBCPP_DISABLE_EXTENSION_WARNING 578 579#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 580 581#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 582 583#ifdef _DLL 584# define _LIBCPP_CRT_FUNC __declspec(dllimport) 585#else 586# define _LIBCPP_CRT_FUNC 587#endif 588 589#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 590# define _LIBCPP_DLL_VIS 591# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 592# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 593# define _LIBCPP_OVERRIDABLE_FUNC_VIS 594# define _LIBCPP_EXPORTED_FROM_ABI 595#elif defined(_LIBCPP_BUILDING_LIBRARY) 596# define _LIBCPP_DLL_VIS __declspec(dllexport) 597# if defined(__MINGW32__) 598# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 599# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 600# else 601# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 602# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 603# endif 604# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 605# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 606#else 607# define _LIBCPP_DLL_VIS __declspec(dllimport) 608# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 609# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 610# define _LIBCPP_OVERRIDABLE_FUNC_VIS 611# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 612#endif 613 614#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 615#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 616#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 617#define _LIBCPP_HIDDEN 618#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 619#define _LIBCPP_TEMPLATE_VIS 620#define _LIBCPP_TEMPLATE_DATA_VIS 621#define _LIBCPP_ENUM_VIS 622 623#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 624 625#ifndef _LIBCPP_HIDDEN 626# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 627# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 628# else 629# define _LIBCPP_HIDDEN 630# endif 631#endif 632 633#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 634# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 635// The inline should be removed once PR32114 is resolved 636# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 637# else 638# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 639# endif 640#endif 641 642#ifndef _LIBCPP_FUNC_VIS 643# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 644# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 645# else 646# define _LIBCPP_FUNC_VIS 647# endif 648#endif 649 650#ifndef _LIBCPP_TYPE_VIS 651# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 652# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 653# else 654# define _LIBCPP_TYPE_VIS 655# endif 656#endif 657 658#ifndef _LIBCPP_TEMPLATE_VIS 659# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 660# if __has_attribute(__type_visibility__) 661# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 662# else 663# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 664# endif 665# else 666# define _LIBCPP_TEMPLATE_VIS 667# endif 668#endif 669 670#ifndef _LIBCPP_TEMPLATE_DATA_VIS 671# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 672# define _LIBCPP_TEMPLATE_DATA_VIS __attribute__ ((__visibility__("default"))) 673# else 674# define _LIBCPP_TEMPLATE_DATA_VIS 675# endif 676#endif 677 678#ifndef _LIBCPP_EXPORTED_FROM_ABI 679# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 680# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 681# else 682# define _LIBCPP_EXPORTED_FROM_ABI 683# endif 684#endif 685 686#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 687#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 688#endif 689 690#ifndef _LIBCPP_EXCEPTION_ABI 691# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 692# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 693# else 694# define _LIBCPP_EXCEPTION_ABI 695# endif 696#endif 697 698#ifndef _LIBCPP_ENUM_VIS 699# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 700# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 701# else 702# define _LIBCPP_ENUM_VIS 703# endif 704#endif 705 706#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 707# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 708# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 709# else 710# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 711# endif 712#endif 713 714#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 715#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 716#endif 717 718#if __has_attribute(internal_linkage) 719# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 720#else 721# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 722#endif 723 724#if __has_attribute(exclude_from_explicit_instantiation) 725# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 726#else 727 // Try to approximate the effect of exclude_from_explicit_instantiation 728 // (which is that entities are not assumed to be provided by explicit 729 // template instantiations in the dylib) by always inlining those entities. 730# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 731#endif 732 733#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 734# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 735# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 736# else 737# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 738# endif 739#endif 740 741#ifndef _LIBCPP_HIDE_FROM_ABI 742# if _LIBCPP_HIDE_FROM_ABI_PER_TU 743# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 744# else 745# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 746# endif 747#endif 748 749#ifdef _LIBCPP_BUILDING_LIBRARY 750# if _LIBCPP_ABI_VERSION > 1 751# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 752# else 753# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 754# endif 755#else 756# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 757#endif 758 759// Just so we can migrate to the new macros gradually. 760#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 761 762// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 763#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 764#define _LIBCPP_END_NAMESPACE_STD } } 765#define _VSTD std::_LIBCPP_ABI_NAMESPACE 766_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 767 768#if _LIBCPP_STD_VER >= 17 769#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 770 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 771#else 772#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 773 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 774#endif 775 776#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 777 _LIBCPP_END_NAMESPACE_STD } } 778 779#define _VSTD_FS _VSTD::__fs::filesystem 780 781#if __has_attribute(__enable_if__) 782# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 783#endif 784 785#ifndef _LIBCPP_HAS_NO_NOEXCEPT 786# define _NOEXCEPT noexcept 787# define _NOEXCEPT_(x) noexcept(x) 788#else 789# define _NOEXCEPT throw() 790# define _NOEXCEPT_(x) 791#endif 792 793#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 794typedef unsigned short char16_t; 795typedef unsigned int char32_t; 796#endif 797 798#ifndef __SIZEOF_INT128__ 799#define _LIBCPP_HAS_NO_INT128 800#endif 801 802#ifdef _LIBCPP_CXX03_LANG 803# define static_assert(...) _Static_assert(__VA_ARGS__) 804# define decltype(...) __decltype(__VA_ARGS__) 805#endif // _LIBCPP_CXX03_LANG 806 807#ifdef _LIBCPP_CXX03_LANG 808# define _LIBCPP_CONSTEXPR 809#else 810# define _LIBCPP_CONSTEXPR constexpr 811#endif 812 813#ifndef __cpp_consteval 814# define _LIBCPP_CONSTEVAL _LIBCPP_CONSTEXPR 815#else 816# define _LIBCPP_CONSTEVAL consteval 817#endif 818 819#if !defined(__cpp_concepts) || __cpp_concepts < 201907L 820#define _LIBCPP_HAS_NO_CONCEPTS 821#endif 822 823#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_HAS_NO_CONCEPTS) 824#define _LIBCPP_HAS_NO_RANGES 825#endif 826 827#ifdef _LIBCPP_CXX03_LANG 828# define _LIBCPP_DEFAULT {} 829#else 830# define _LIBCPP_DEFAULT = default; 831#endif 832 833#ifdef __GNUC__ 834# define _LIBCPP_NOALIAS __attribute__((__malloc__)) 835#else 836# define _LIBCPP_NOALIAS 837#endif 838 839#if __has_attribute(using_if_exists) 840# define _LIBCPP_USING_IF_EXISTS __attribute__((using_if_exists)) 841#else 842# define _LIBCPP_USING_IF_EXISTS 843#endif 844 845#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 846# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 847# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 848 __lx __v_; \ 849 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 850 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 851 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 852 }; 853#else // _LIBCPP_HAS_NO_STRONG_ENUMS 854# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 855# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 856#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 857 858// _LIBCPP_DEBUG potential values: 859// - undefined: No assertions. This is the default. 860// - 0: Basic assertions 861// - 1: Basic assertions + iterator validity checks + unspecified behavior randomization. 862# if !defined(_LIBCPP_DEBUG) 863# define _LIBCPP_DEBUG_LEVEL 0 864# elif _LIBCPP_DEBUG == 0 865# define _LIBCPP_DEBUG_LEVEL 1 866# elif _LIBCPP_DEBUG == 1 867# define _LIBCPP_DEBUG_LEVEL 2 868# else 869# error Supported values for _LIBCPP_DEBUG are 0 and 1 870# endif 871 872# if _LIBCPP_DEBUG_LEVEL >= 2 && !defined(_LIBCPP_CXX03_LANG) 873# define _LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY 874# endif 875 876# if defined(_LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY) 877# if defined(_LIBCPP_CXX03_LANG) 878# error Support for unspecified stability is only for C++11 and higher 879# endif 880# define _LIBCPP_DEBUG_RANDOMIZE_RANGE(__first, __last) \ 881 do { \ 882 if (!__builtin_is_constant_evaluated()) \ 883 _VSTD::shuffle(__first, __last, __libcpp_debug_randomizer()); \ 884 } while (false) 885# else 886# define _LIBCPP_DEBUG_RANDOMIZE_RANGE(__first, __last) \ 887 do { \ 888 } while (false) 889# endif 890 891// Libc++ allows disabling extern template instantiation declarations by 892// means of users defining _LIBCPP_DISABLE_EXTERN_TEMPLATE. 893// 894// Furthermore, when the Debug mode is enabled, we disable extern declarations 895// when building user code because we don't want to use the functions compiled 896// in the library, which might not have had the debug mode enabled when built. 897// However, some extern declarations need to be used, because code correctness 898// depends on it (several instances in <locale>). Those special declarations 899// are declared with _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE, which is enabled 900// even when the debug mode is enabled. 901#if defined(_LIBCPP_DISABLE_EXTERN_TEMPLATE) 902# define _LIBCPP_EXTERN_TEMPLATE(...) /* nothing */ 903# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) /* nothing */ 904#elif _LIBCPP_DEBUG_LEVEL >= 1 && !defined(_LIBCPP_BUILDING_LIBRARY) 905# define _LIBCPP_EXTERN_TEMPLATE(...) /* nothing */ 906# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) extern template __VA_ARGS__; 907#else 908# define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 909# define _LIBCPP_EXTERN_TEMPLATE_EVEN_IN_DEBUG_MODE(...) extern template __VA_ARGS__; 910#endif 911 912#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 913 defined(__sun__) || defined(__NetBSD__) 914#define _LIBCPP_LOCALE__L_EXTENSIONS 1 915#endif 916 917#ifdef __FreeBSD__ 918#define _DECLARE_C99_LDBL_MATH 1 919#endif 920 921// If we are getting operator new from the MSVC CRT, then allocation overloads 922// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 923#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 924# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 925#elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) 926 // We're deferring to Microsoft's STL to provide aligned new et al. We don't 927 // have it unless the language feature test macro is defined. 928# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 929#elif defined(__MVS__) 930# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 931#endif 932 933#if defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 934 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606) 935# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 936#endif 937 938#if defined(__APPLE__) || defined(__FreeBSD__) 939#define _LIBCPP_HAS_DEFAULTRUNELOCALE 940#endif 941 942#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 943#define _LIBCPP_WCTYPE_IS_MASK 944#endif 945 946#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) 947#define _LIBCPP_HAS_NO_CHAR8_T 948#endif 949 950// Deprecation macros. 951// 952// Deprecations warnings are always enabled, except when users explicitly opt-out 953// by defining _LIBCPP_DISABLE_DEPRECATION_WARNINGS. 954#if !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) 955# if __has_attribute(deprecated) 956# define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 957# elif _LIBCPP_STD_VER > 11 958# define _LIBCPP_DEPRECATED [[deprecated]] 959# else 960# define _LIBCPP_DEPRECATED 961# endif 962#else 963# define _LIBCPP_DEPRECATED 964#endif 965 966#if !defined(_LIBCPP_CXX03_LANG) 967# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 968#else 969# define _LIBCPP_DEPRECATED_IN_CXX11 970#endif 971 972#if _LIBCPP_STD_VER >= 14 973# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 974#else 975# define _LIBCPP_DEPRECATED_IN_CXX14 976#endif 977 978#if _LIBCPP_STD_VER >= 17 979# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 980#else 981# define _LIBCPP_DEPRECATED_IN_CXX17 982#endif 983 984#if _LIBCPP_STD_VER > 17 985# define _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_DEPRECATED 986#else 987# define _LIBCPP_DEPRECATED_IN_CXX20 988#endif 989 990#if !defined(_LIBCPP_HAS_NO_CHAR8_T) 991# define _LIBCPP_DEPRECATED_WITH_CHAR8_T _LIBCPP_DEPRECATED 992#else 993# define _LIBCPP_DEPRECATED_WITH_CHAR8_T 994#endif 995 996// Macros to enter and leave a state where deprecation warnings are suppressed. 997#if defined(_LIBCPP_COMPILER_CLANG_BASED) || defined(_LIBCPP_COMPILER_GCC) 998# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \ 999 _Pragma("GCC diagnostic push") \ 1000 _Pragma("GCC diagnostic ignored \"-Wdeprecated\"") \ 1001 _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") 1002# define _LIBCPP_SUPPRESS_DEPRECATED_POP \ 1003 _Pragma("GCC diagnostic pop") 1004#else 1005# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH 1006# define _LIBCPP_SUPPRESS_DEPRECATED_POP 1007#endif 1008 1009#if _LIBCPP_STD_VER <= 11 1010# define _LIBCPP_EXPLICIT_AFTER_CXX11 1011#else 1012# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1013#endif 1014 1015#if _LIBCPP_STD_VER > 11 1016# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1017#else 1018# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1019#endif 1020 1021#if _LIBCPP_STD_VER > 14 1022# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1023#else 1024# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1025#endif 1026 1027#if _LIBCPP_STD_VER > 17 1028# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1029#else 1030# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1031#endif 1032 1033#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1034# define _LIBCPP_NODISCARD [[nodiscard]] 1035#elif defined(_LIBCPP_COMPILER_CLANG_BASED) && !defined(_LIBCPP_CXX03_LANG) 1036# define _LIBCPP_NODISCARD [[clang::warn_unused_result]] 1037#else 1038// We can't use GCC's [[gnu::warn_unused_result]] and 1039// __attribute__((warn_unused_result)), because GCC does not silence them via 1040// (void) cast. 1041# define _LIBCPP_NODISCARD 1042#endif 1043 1044// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1045// specified as such as an extension. 1046#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1047# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD 1048#else 1049# define _LIBCPP_NODISCARD_EXT 1050#endif 1051 1052#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1053 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1054# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD 1055#else 1056# define _LIBCPP_NODISCARD_AFTER_CXX17 1057#endif 1058 1059#if !defined(_LIBCPP_DEBUG) && _LIBCPP_STD_VER > 11 1060# define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1061#else 1062# define _LIBCPP_CONSTEXPR_IF_NODEBUG 1063#endif 1064 1065#if __has_attribute(no_destroy) 1066# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__)) 1067#else 1068# define _LIBCPP_NO_DESTROY 1069#endif 1070 1071#ifndef _LIBCPP_HAS_NO_ASAN 1072extern "C" _LIBCPP_FUNC_VIS void __sanitizer_annotate_contiguous_container( 1073 const void *, const void *, const void *, const void *); 1074#endif 1075 1076// Try to find out if RTTI is disabled. 1077#if defined(_LIBCPP_COMPILER_CLANG_BASED) && !__has_feature(cxx_rtti) 1078# define _LIBCPP_NO_RTTI 1079#elif defined(__GNUC__) && !defined(__GXX_RTTI) 1080# define _LIBCPP_NO_RTTI 1081#elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1082# define _LIBCPP_NO_RTTI 1083#endif 1084 1085#ifndef _LIBCPP_WEAK 1086#define _LIBCPP_WEAK __attribute__((__weak__)) 1087#endif 1088 1089// Thread API 1090#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1091 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1092 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1093 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1094# if defined(__FreeBSD__) || \ 1095 defined(__wasi__) || \ 1096 defined(__NetBSD__) || \ 1097 defined(__OpenBSD__) || \ 1098 defined(__NuttX__) || \ 1099 defined(__linux__) || \ 1100 defined(__GNU__) || \ 1101 defined(__APPLE__) || \ 1102 defined(__sun__) || \ 1103 defined(__MVS__) || \ 1104 defined(_AIX) 1105# define _LIBCPP_HAS_THREAD_API_PTHREAD 1106# elif defined(__Fuchsia__) 1107 // TODO(44575): Switch to C11 thread API when possible. 1108# define _LIBCPP_HAS_THREAD_API_PTHREAD 1109# elif defined(_LIBCPP_WIN32API) 1110# define _LIBCPP_HAS_THREAD_API_WIN32 1111# else 1112# error "No thread API" 1113# endif // _LIBCPP_HAS_THREAD_API 1114#endif // _LIBCPP_HAS_NO_THREADS 1115 1116#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1117#if defined(__ANDROID__) && __ANDROID_API__ >= 30 1118#define _LIBCPP_HAS_COND_CLOCKWAIT 1119#elif defined(_LIBCPP_GLIBC_PREREQ) 1120#if _LIBCPP_GLIBC_PREREQ(2, 30) 1121#define _LIBCPP_HAS_COND_CLOCKWAIT 1122#endif 1123#endif 1124#endif 1125 1126#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1127#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1128 _LIBCPP_HAS_NO_THREADS is not defined. 1129#endif 1130 1131#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1132#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1133 _LIBCPP_HAS_NO_THREADS is defined. 1134#endif 1135 1136#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1137#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1138 _LIBCPP_HAS_NO_THREADS is defined. 1139#endif 1140 1141#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(__STDCPP_THREADS__) 1142#define __STDCPP_THREADS__ 1 1143#endif 1144 1145// The glibc and Bionic implementation of pthreads implements 1146// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 1147// mutexes have no destroy mechanism. 1148// 1149// This optimization can't be performed on Apple platforms, where 1150// pthread_mutex_destroy can allow the kernel to release resources. 1151// See https://llvm.org/D64298 for details. 1152// 1153// TODO(EricWF): Enable this optimization on Bionic after speaking to their 1154// respective stakeholders. 1155#if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) \ 1156 || (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) \ 1157 || defined(_LIBCPP_HAS_THREAD_API_WIN32) 1158# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 1159#endif 1160 1161// Destroying a condvar is a nop on Windows. 1162// 1163// This optimization can't be performed on Apple platforms, where 1164// pthread_cond_destroy can allow the kernel to release resources. 1165// See https://llvm.org/D64298 for details. 1166// 1167// TODO(EricWF): This is potentially true for some pthread implementations 1168// as well. 1169#if (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) || \ 1170 defined(_LIBCPP_HAS_THREAD_API_WIN32) 1171# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 1172#endif 1173 1174// Some systems do not provide gets() in their C library, for security reasons. 1175#if defined(_LIBCPP_MSVCRT) || \ 1176 (defined(__FreeBSD_version) && __FreeBSD_version >= 1300043) || \ 1177 defined(__OpenBSD__) 1178# define _LIBCPP_C_HAS_NO_GETS 1179#endif 1180 1181#if defined(__BIONIC__) || defined(__NuttX__) || \ 1182 defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC) || \ 1183 defined(__MVS__) || defined(__OpenBSD__) 1184#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1185#endif 1186 1187#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1188# define _LIBCPP_HAS_C_ATOMIC_IMP 1189#elif defined(_LIBCPP_COMPILER_GCC) 1190# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1191#endif 1192 1193#if !defined(_LIBCPP_HAS_C_ATOMIC_IMP) && \ 1194 !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) && \ 1195 !defined(_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP) 1196# define _LIBCPP_HAS_NO_ATOMIC_HEADER 1197#else 1198# ifndef _LIBCPP_ATOMIC_FLAG_TYPE 1199# define _LIBCPP_ATOMIC_FLAG_TYPE bool 1200# endif 1201# ifdef _LIBCPP_FREESTANDING 1202# define _LIBCPP_ATOMIC_ONLY_USE_BUILTINS 1203# endif 1204#endif 1205 1206#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1207#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1208#endif 1209 1210#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1211# if defined(__clang__) && __has_attribute(acquire_capability) 1212// Work around the attribute handling in clang. When both __declspec and 1213// __attribute__ are present, the processing goes awry preventing the definition 1214// of the types. 1215# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1216# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1217# endif 1218# endif 1219#endif 1220 1221#ifdef _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1222# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) __attribute__((x)) 1223#else 1224# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) 1225#endif 1226 1227#if __has_attribute(require_constant_initialization) 1228# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1229#else 1230# define _LIBCPP_SAFE_STATIC 1231#endif 1232 1233#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1234# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1235 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1236# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1237 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1238#else 1239# define _LIBCPP_DIAGNOSE_WARNING(...) 1240# define _LIBCPP_DIAGNOSE_ERROR(...) 1241#endif 1242 1243// Use a function like macro to imply that it must be followed by a semicolon 1244#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1245# define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1246#elif __has_cpp_attribute(clang::fallthrough) 1247# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1248#elif __has_attribute(__fallthrough__) 1249# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1250#else 1251# define _LIBCPP_FALLTHROUGH() ((void)0) 1252#endif 1253 1254#if __has_attribute(__nodebug__) 1255#define _LIBCPP_NODEBUG __attribute__((__nodebug__)) 1256#else 1257#define _LIBCPP_NODEBUG 1258#endif 1259 1260#if __has_attribute(__standalone_debug__) 1261#define _LIBCPP_STANDALONE_DEBUG __attribute__((__standalone_debug__)) 1262#else 1263#define _LIBCPP_STANDALONE_DEBUG 1264#endif 1265 1266#if __has_attribute(__preferred_name__) 1267#define _LIBCPP_PREFERRED_NAME(x) __attribute__((__preferred_name__(x))) 1268#else 1269#define _LIBCPP_PREFERRED_NAME(x) 1270#endif 1271 1272// We often repeat things just for handling wide characters in the library. 1273// When wide characters are disabled, it can be useful to have a quick way of 1274// disabling it without having to resort to #if-#endif, which has a larger 1275// impact on readability. 1276#if defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS) 1277# define _LIBCPP_IF_WIDE_CHARACTERS(...) 1278#else 1279# define _LIBCPP_IF_WIDE_CHARACTERS(...) __VA_ARGS__ 1280#endif 1281 1282#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1283 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1284# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1285#else 1286# define _LIBCPP_DECLSPEC_EMPTY_BASES 1287#endif 1288 1289#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1290#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1291#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1292#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1293#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1294#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1295 1296#if defined(_LIBCPP_ENABLE_CXX20_REMOVED_FEATURES) 1297#define _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS 1298#define _LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS 1299#define _LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS 1300#define _LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR 1301#define _LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS 1302#endif // _LIBCPP_ENABLE_CXX20_REMOVED_FEATURES 1303 1304#if !defined(__cpp_impl_coroutine) || __cpp_impl_coroutine < 201902L 1305#define _LIBCPP_HAS_NO_CXX20_COROUTINES 1306#endif 1307 1308#if defined(_LIBCPP_COMPILER_IBM) 1309#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1310#endif 1311 1312#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1313# define _LIBCPP_PUSH_MACROS 1314# define _LIBCPP_POP_MACROS 1315#else 1316 // Don't warn about macro conflicts when we can restore them at the 1317 // end of the header. 1318# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1319# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1320# endif 1321# if defined(_LIBCPP_COMPILER_MSVC) 1322# define _LIBCPP_PUSH_MACROS \ 1323 __pragma(push_macro("min")) \ 1324 __pragma(push_macro("max")) 1325# define _LIBCPP_POP_MACROS \ 1326 __pragma(pop_macro("min")) \ 1327 __pragma(pop_macro("max")) 1328# else 1329# define _LIBCPP_PUSH_MACROS \ 1330 _Pragma("push_macro(\"min\")") \ 1331 _Pragma("push_macro(\"max\")") 1332# define _LIBCPP_POP_MACROS \ 1333 _Pragma("pop_macro(\"min\")") \ 1334 _Pragma("pop_macro(\"max\")") 1335# endif 1336#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1337 1338#ifndef _LIBCPP_NO_AUTO_LINK 1339# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1340# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 1341# pragma comment(lib, "c++.lib") 1342# else 1343# pragma comment(lib, "libc++.lib") 1344# endif 1345# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1346#endif // _LIBCPP_NO_AUTO_LINK 1347 1348// Configures the fopen close-on-exec mode character, if any. This string will 1349// be appended to any mode string used by fstream for fopen/fdopen. 1350// 1351// Not all platforms support this, but it helps avoid fd-leaks on platforms that 1352// do. 1353#if defined(__BIONIC__) 1354# define _LIBCPP_FOPEN_CLOEXEC_MODE "e" 1355#else 1356# define _LIBCPP_FOPEN_CLOEXEC_MODE 1357#endif 1358 1359// Support for _FILE_OFFSET_BITS=64 landed gradually in Android, so the full set 1360// of functions used in cstdio may not be available for low API levels when 1361// using 64-bit file offsets on LP32. 1362#if defined(__BIONIC__) && defined(__USE_FILE_OFFSET64) && __ANDROID_API__ < 24 1363#define _LIBCPP_HAS_NO_FGETPOS_FSETPOS 1364#endif 1365 1366#if __has_attribute(init_priority) 1367 // TODO: Remove this once we drop support for building libc++ with old Clangs 1368# if (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 1200) || \ 1369 (defined(__apple_build_version__) && __apple_build_version__ < 13000000) 1370# define _LIBCPP_INIT_PRIORITY_MAX __attribute__((init_priority(101))) 1371# else 1372# define _LIBCPP_INIT_PRIORITY_MAX __attribute__((init_priority(100))) 1373# endif 1374#else 1375# define _LIBCPP_INIT_PRIORITY_MAX 1376#endif 1377 1378#if defined(__GNUC__) || defined(__clang__) 1379#define _LIBCPP_FORMAT_PRINTF(a, b) \ 1380 __attribute__((__format__(__printf__, a, b))) 1381#else 1382#define _LIBCPP_FORMAT_PRINTF(a, b) 1383#endif 1384 1385#endif // __cplusplus 1386 1387#endif // _LIBCPP_CONFIG 1388