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 11000 36 37#ifndef _LIBCPP_ABI_VERSION 38# define _LIBCPP_ABI_VERSION 1 39#endif 40 41#ifndef __STDC_HOSTED__ 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# else 53# define _LIBCPP_STD_VER 18 // current year, or date of c++2a ratification 54# endif 55#endif // _LIBCPP_STD_VER 56 57#if defined(__ELF__) 58# define _LIBCPP_OBJECT_FORMAT_ELF 1 59#elif defined(__MACH__) 60# define _LIBCPP_OBJECT_FORMAT_MACHO 1 61#elif defined(_WIN32) 62# define _LIBCPP_OBJECT_FORMAT_COFF 1 63#elif defined(__wasm__) 64# define _LIBCPP_OBJECT_FORMAT_WASM 1 65#else 66# error Unknown object file format 67#endif 68 69#if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 70// Change short string representation so that string data starts at offset 0, 71// improving its alignment in some cases. 72# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 73// Fix deque iterator type in order to support incomplete types. 74# define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 75// Fix undefined behavior in how std::list stores its linked nodes. 76# define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB 77// Fix undefined behavior in how __tree stores its end and parent nodes. 78# define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB 79// Fix undefined behavior in how __hash_table stores its pointer types. 80# define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB 81# define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB 82# define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE 83// Don't use a nullptr_t simulation type in C++03 instead using C++11 nullptr 84// provided under the alternate keyword __nullptr, which changes the mangling 85// of nullptr_t. This option is ABI incompatible with GCC in C++03 mode. 86# define _LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR 87// Define the `pointer_safety` enum as a C++11 strongly typed enumeration 88// instead of as a class simulating an enum. If this option is enabled 89// `pointer_safety` and `get_pointer_safety()` will no longer be available 90// in C++03. 91# define _LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE 92// Define a key function for `bad_function_call` in the library, to centralize 93// its vtable and typeinfo to libc++ rather than having all other libraries 94// using that class define their own copies. 95# define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 96// Enable optimized version of __do_get_(un)signed which avoids redundant copies. 97# define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET 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// Re-worked external template instantiations for std::string with a focus on 106// performance and fast-path inlining. 107# define _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION 108#elif _LIBCPP_ABI_VERSION == 1 109# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 110// Enable compiling copies of now inline methods into the dylib to support 111// applications compiled against older libraries. This is unnecessary with 112// COFF dllexport semantics, since dllexport forces a non-inline definition 113// of inline functions to be emitted anyway. Our own non-inline copy would 114// conflict with the dllexport-emitted copy, so we disable it. 115# define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS 116# endif 117// Feature macros for disabling pre ABI v1 features. All of these options 118// are deprecated. 119# if defined(__FreeBSD__) 120# define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR 121# endif 122#endif 123 124#ifdef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 125#error "_LIBCPP_TRIVIAL_PAIR_COPY_CTOR" is no longer supported. \ 126 use _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR instead 127#endif 128 129#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y 130#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) 131 132#ifndef _LIBCPP_ABI_NAMESPACE 133# define _LIBCPP_ABI_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION) 134#endif 135 136#if __cplusplus < 201103L 137#define _LIBCPP_CXX03_LANG 138#endif 139 140#ifndef __has_attribute 141#define __has_attribute(__x) 0 142#endif 143 144#ifndef __has_builtin 145#define __has_builtin(__x) 0 146#endif 147 148#ifndef __has_extension 149#define __has_extension(__x) 0 150#endif 151 152#ifndef __has_feature 153#define __has_feature(__x) 0 154#endif 155 156#ifndef __has_cpp_attribute 157#define __has_cpp_attribute(__x) 0 158#endif 159 160// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by 161// the compiler and '1' otherwise. 162#ifndef __is_identifier 163#define __is_identifier(__x) 1 164#endif 165 166#ifndef __has_declspec_attribute 167#define __has_declspec_attribute(__x) 0 168#endif 169 170#define __has_keyword(__x) !(__is_identifier(__x)) 171 172#ifndef __has_include 173#define __has_include(...) 0 174#endif 175 176#if defined(__clang__) 177# define _LIBCPP_COMPILER_CLANG 178# ifndef __apple_build_version__ 179# define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__) 180# endif 181#elif defined(__GNUC__) 182# define _LIBCPP_COMPILER_GCC 183#elif defined(_MSC_VER) 184# define _LIBCPP_COMPILER_MSVC 185#elif defined(__IBMCPP__) 186# define _LIBCPP_COMPILER_IBM 187#endif 188 189#if defined(_LIBCPP_COMPILER_GCC) && __cplusplus < 201103L 190#error "libc++ does not support using GCC with C++03. Please enable C++11" 191#endif 192 193// FIXME: ABI detection should be done via compiler builtin macros. This 194// is just a placeholder until Clang implements such macros. For now assume 195// that Windows compilers pretending to be MSVC++ target the Microsoft ABI, 196// and allow the user to explicitly specify the ABI to handle cases where this 197// heuristic falls short. 198#if defined(_LIBCPP_ABI_FORCE_ITANIUM) && defined(_LIBCPP_ABI_FORCE_MICROSOFT) 199# error "Only one of _LIBCPP_ABI_FORCE_ITANIUM and _LIBCPP_ABI_FORCE_MICROSOFT can be defined" 200#elif defined(_LIBCPP_ABI_FORCE_ITANIUM) 201# define _LIBCPP_ABI_ITANIUM 202#elif defined(_LIBCPP_ABI_FORCE_MICROSOFT) 203# define _LIBCPP_ABI_MICROSOFT 204#else 205# if defined(_WIN32) && defined(_MSC_VER) 206# define _LIBCPP_ABI_MICROSOFT 207# else 208# define _LIBCPP_ABI_ITANIUM 209# endif 210#endif 211 212#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_NO_VCRUNTIME) 213# define _LIBCPP_ABI_VCRUNTIME 214#endif 215 216// Need to detect which libc we're using if we're on Linux. 217#if defined(__linux__) 218# include <features.h> 219# if defined(__GLIBC_PREREQ) 220# define _LIBCPP_GLIBC_PREREQ(a, b) __GLIBC_PREREQ(a, b) 221# else 222# define _LIBCPP_GLIBC_PREREQ(a, b) 0 223# endif // defined(__GLIBC_PREREQ) 224#endif // defined(__linux__) 225 226#ifdef __LITTLE_ENDIAN__ 227# if __LITTLE_ENDIAN__ 228# define _LIBCPP_LITTLE_ENDIAN 229# endif // __LITTLE_ENDIAN__ 230#endif // __LITTLE_ENDIAN__ 231 232#ifdef __BIG_ENDIAN__ 233# if __BIG_ENDIAN__ 234# define _LIBCPP_BIG_ENDIAN 235# endif // __BIG_ENDIAN__ 236#endif // __BIG_ENDIAN__ 237 238#ifdef __BYTE_ORDER__ 239# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 240# define _LIBCPP_LITTLE_ENDIAN 241# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 242# define _LIBCPP_BIG_ENDIAN 243# endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 244#endif // __BYTE_ORDER__ 245 246#ifdef __FreeBSD__ 247# include <sys/endian.h> 248# include <osreldate.h> 249# if _BYTE_ORDER == _LITTLE_ENDIAN 250# define _LIBCPP_LITTLE_ENDIAN 251# else // _BYTE_ORDER == _LITTLE_ENDIAN 252# define _LIBCPP_BIG_ENDIAN 253# endif // _BYTE_ORDER == _LITTLE_ENDIAN 254# ifndef __LONG_LONG_SUPPORTED 255# define _LIBCPP_HAS_NO_LONG_LONG 256# endif // __LONG_LONG_SUPPORTED 257#endif // __FreeBSD__ 258 259#ifdef __NetBSD__ 260# include <sys/endian.h> 261# if _BYTE_ORDER == _LITTLE_ENDIAN 262# define _LIBCPP_LITTLE_ENDIAN 263# else // _BYTE_ORDER == _LITTLE_ENDIAN 264# define _LIBCPP_BIG_ENDIAN 265# endif // _BYTE_ORDER == _LITTLE_ENDIAN 266#endif // __NetBSD__ 267 268#if defined(_WIN32) 269# define _LIBCPP_WIN32API 270# define _LIBCPP_LITTLE_ENDIAN 271# define _LIBCPP_SHORT_WCHAR 1 272// Both MinGW and native MSVC provide a "MSVC"-like environment 273# define _LIBCPP_MSVCRT_LIKE 274// If mingw not explicitly detected, assume using MS C runtime only if 275// a MS compatibility version is specified. 276# if defined(_MSC_VER) && !defined(__MINGW32__) 277# define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 278# endif 279# if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 280# define _LIBCPP_HAS_BITSCAN64 281# endif 282# define _LIBCPP_HAS_OPEN_WITH_WCHAR 283# if defined(_LIBCPP_MSVCRT) 284# define _LIBCPP_HAS_QUICK_EXIT 285# endif 286 287// Some CRT APIs are unavailable to store apps 288# if defined(WINAPI_FAMILY) 289# include <winapifamily.h> 290# if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 291 (!defined(WINAPI_PARTITION_SYSTEM) || \ 292 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 293# define _LIBCPP_WINDOWS_STORE_APP 294# endif 295# endif 296#endif // defined(_WIN32) 297 298#ifdef __sun__ 299# include <sys/isa_defs.h> 300# ifdef _LITTLE_ENDIAN 301# define _LIBCPP_LITTLE_ENDIAN 302# else 303# define _LIBCPP_BIG_ENDIAN 304# endif 305#endif // __sun__ 306 307#if defined(__CloudABI__) 308 // Certain architectures provide arc4random(). Prefer using 309 // arc4random() over /dev/{u,}random to make it possible to obtain 310 // random data even when using sandboxing mechanisms such as chroots, 311 // Capsicum, etc. 312# define _LIBCPP_USING_ARC4_RANDOM 313#elif defined(__Fuchsia__) || defined(__wasi__) 314# define _LIBCPP_USING_GETENTROPY 315#elif defined(__native_client__) 316 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, 317 // including accesses to the special files under /dev. C++11's 318 // std::random_device is instead exposed through a NaCl syscall. 319# define _LIBCPP_USING_NACL_RANDOM 320#elif defined(_LIBCPP_WIN32API) 321# define _LIBCPP_USING_WIN32_RANDOM 322#else 323# define _LIBCPP_USING_DEV_RANDOM 324#endif 325 326#if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 327# include <endian.h> 328# if __BYTE_ORDER == __LITTLE_ENDIAN 329# define _LIBCPP_LITTLE_ENDIAN 330# elif __BYTE_ORDER == __BIG_ENDIAN 331# define _LIBCPP_BIG_ENDIAN 332# else // __BYTE_ORDER == __BIG_ENDIAN 333# error unable to determine endian 334# endif 335#endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 336 337#if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 338# define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 339#else 340# define _LIBCPP_NO_CFI 341#endif 342 343#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 344# if defined(__FreeBSD__) 345# define _LIBCPP_HAS_ALIGNED_ALLOC 346# define _LIBCPP_HAS_QUICK_EXIT 347# define _LIBCPP_HAS_C11_FEATURES 348# if __FreeBSD_version >= 1300064 || \ 349 (__FreeBSD_version >= 1201504 && __FreeBSD_version < 1300000) 350# define _LIBCPP_HAS_TIMESPEC_GET 351# endif 352# elif defined(__BIONIC__) 353# define _LIBCPP_HAS_C11_FEATURES 354# if __ANDROID_API__ >= 21 355# define _LIBCPP_HAS_QUICK_EXIT 356# endif 357# if __ANDROID_API__ >= 28 358# define _LIBCPP_HAS_ALIGNED_ALLOC 359# endif 360# if __ANDROID_API__ >= 29 361# define _LIBCPP_HAS_TIMESPEC_GET 362# endif 363# elif defined(__Fuchsia__) || defined(__wasi__) || defined(__NetBSD__) 364# define _LIBCPP_HAS_ALIGNED_ALLOC 365# define _LIBCPP_HAS_QUICK_EXIT 366# define _LIBCPP_HAS_TIMESPEC_GET 367# define _LIBCPP_HAS_C11_FEATURES 368# elif defined(__linux__) 369# if !defined(_LIBCPP_HAS_MUSL_LIBC) 370# if _LIBCPP_GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 371# define _LIBCPP_HAS_QUICK_EXIT 372# endif 373# if _LIBCPP_GLIBC_PREREQ(2, 17) 374# define _LIBCPP_HAS_ALIGNED_ALLOC 375# define _LIBCPP_HAS_C11_FEATURES 376# define _LIBCPP_HAS_TIMESPEC_GET 377# endif 378# else // defined(_LIBCPP_HAS_MUSL_LIBC) 379# define _LIBCPP_HAS_ALIGNED_ALLOC 380# define _LIBCPP_HAS_QUICK_EXIT 381# define _LIBCPP_HAS_TIMESPEC_GET 382# define _LIBCPP_HAS_C11_FEATURES 383# endif 384# endif // __linux__ 385#endif 386 387#ifndef _LIBCPP_CXX03_LANG 388# define _LIBCPP_ALIGNOF(_Tp) alignof(_Tp) 389#elif defined(_LIBCPP_COMPILER_CLANG) 390# define _LIBCPP_ALIGNOF(_Tp) _Alignof(_Tp) 391#else 392// This definition is potentially buggy, but it's only taken with GCC in C++03, 393// which we barely support anyway. See llvm.org/PR39713 394# define _LIBCPP_ALIGNOF(_Tp) __alignof(_Tp) 395#endif 396 397#define _LIBCPP_PREFERRED_ALIGNOF(_Tp) __alignof(_Tp) 398 399#if defined(_LIBCPP_COMPILER_CLANG) 400 401#if defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 402# error _LIBCPP_ALTERNATE_STRING_LAYOUT is deprecated, please use _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT instead 403#endif 404#if defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 405 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2) 406# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 407#endif 408 409#if __has_feature(cxx_alignas) 410# define _ALIGNAS_TYPE(x) alignas(x) 411# define _ALIGNAS(x) alignas(x) 412#else 413# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 414# define _ALIGNAS(x) __attribute__((__aligned__(x))) 415#endif 416 417#if __cplusplus < 201103L 418typedef __char16_t char16_t; 419typedef __char32_t char32_t; 420#endif 421 422#if !__has_feature(cxx_exceptions) 423# define _LIBCPP_NO_EXCEPTIONS 424#endif 425 426#if !(__has_feature(cxx_strong_enums)) 427#define _LIBCPP_HAS_NO_STRONG_ENUMS 428#endif 429 430#if __has_feature(cxx_attributes) 431# define _LIBCPP_NORETURN [[noreturn]] 432#else 433# define _LIBCPP_NORETURN __attribute__ ((noreturn)) 434#endif 435 436#if !(__has_feature(cxx_lambdas)) 437#define _LIBCPP_HAS_NO_LAMBDAS 438#endif 439 440#if !(__has_feature(cxx_nullptr)) 441# if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 442# define nullptr __nullptr 443# else 444# define _LIBCPP_HAS_NO_NULLPTR 445# endif 446#endif 447 448#if !(__has_feature(cxx_rvalue_references)) 449#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 450#endif 451 452#if !(__has_feature(cxx_auto_type)) 453#define _LIBCPP_HAS_NO_AUTO_TYPE 454#endif 455 456#if !(__has_feature(cxx_variadic_templates)) 457#define _LIBCPP_HAS_NO_VARIADICS 458#endif 459 460// Objective-C++ features (opt-in) 461#if __has_feature(objc_arc) 462#define _LIBCPP_HAS_OBJC_ARC 463#endif 464 465#if __has_feature(objc_arc_weak) 466#define _LIBCPP_HAS_OBJC_ARC_WEAK 467#endif 468 469#if __has_extension(blocks) 470# define _LIBCPP_HAS_EXTENSION_BLOCKS 471#endif 472 473#if defined(_LIBCPP_HAS_EXTENSION_BLOCKS) && defined(__APPLE__) 474# define _LIBCPP_HAS_BLOCKS_RUNTIME 475#endif 476 477#if !(__has_feature(cxx_relaxed_constexpr)) 478#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 479#endif 480 481#if !(__has_feature(cxx_variable_templates)) 482#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 483#endif 484 485#if !(__has_feature(cxx_noexcept)) 486#define _LIBCPP_HAS_NO_NOEXCEPT 487#endif 488 489#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 490#define _LIBCPP_HAS_NO_ASAN 491#endif 492 493// Allow for build-time disabling of unsigned integer sanitization 494#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 495#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 496#endif 497 498#if __has_builtin(__builtin_launder) 499#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 500#endif 501 502#if __has_builtin(__builtin_constant_p) 503#define _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 504#endif 505 506#if !__is_identifier(__has_unique_object_representations) 507#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 508#endif 509 510#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 511 512// Literal operators ""d and ""y are supported starting with LLVM Clang 8 and AppleClang 10.0.1 513#if (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 800) || \ 514 (defined(__apple_build_version__) && __apple_build_version__ < 10010000) 515#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS 516#endif 517 518#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 519 520#elif defined(_LIBCPP_COMPILER_GCC) 521 522#define _ALIGNAS(x) __attribute__((__aligned__(x))) 523#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 524 525#define _LIBCPP_NORETURN __attribute__((noreturn)) 526 527#if !__EXCEPTIONS 528# define _LIBCPP_NO_EXCEPTIONS 529#endif 530 531// Determine if GCC supports relaxed constexpr 532#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 533#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 534#endif 535 536// GCC 5 supports variable templates 537#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 538#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 539#endif 540 541#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 542#define _LIBCPP_HAS_NO_ASAN 543#endif 544 545#if _GNUC_VER >= 700 546#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 547#define _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 548#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 549#endif 550 551#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 552 553#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 554 555#elif defined(_LIBCPP_COMPILER_MSVC) 556 557#define _LIBCPP_TOSTRING2(x) #x 558#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 559#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 560 561#if _MSC_VER < 1900 562#error "MSVC versions prior to Visual Studio 2015 are not supported" 563#endif 564 565#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 566#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 567#define __alignof__ __alignof 568#define _LIBCPP_NORETURN __declspec(noreturn) 569#define _ALIGNAS(x) __declspec(align(x)) 570#define _ALIGNAS_TYPE(x) alignas(x) 571 572#define _LIBCPP_WEAK 573 574#define _LIBCPP_HAS_NO_ASAN 575 576#define _LIBCPP_ALWAYS_INLINE __forceinline 577 578#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 579 580#define _LIBCPP_DISABLE_EXTENSION_WARNING 581 582#elif defined(_LIBCPP_COMPILER_IBM) 583 584#define _ALIGNAS(x) __attribute__((__aligned__(x))) 585#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 586#define _ATTRIBUTE(x) __attribute__((x)) 587#define _LIBCPP_NORETURN __attribute__((noreturn)) 588 589#define _LIBCPP_HAS_NO_UNICODE_CHARS 590#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 591 592#if defined(_AIX) 593#define __MULTILOCALE_API 594#endif 595 596#define _LIBCPP_HAS_NO_ASAN 597 598#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 599 600#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 601 602#define _LIBCPP_DISABLE_EXTENSION_WARNING 603 604#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 605 606#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 607 608#ifdef _DLL 609# define _LIBCPP_CRT_FUNC __declspec(dllimport) 610#else 611# define _LIBCPP_CRT_FUNC 612#endif 613 614#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 615# define _LIBCPP_DLL_VIS 616# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 617# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 618# define _LIBCPP_OVERRIDABLE_FUNC_VIS 619# define _LIBCPP_EXPORTED_FROM_ABI 620#elif defined(_LIBCPP_BUILDING_LIBRARY) 621# define _LIBCPP_DLL_VIS __declspec(dllexport) 622# if defined(__MINGW32__) 623# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 624# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 625# else 626# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 627# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 628# endif 629# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 630# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 631#else 632# define _LIBCPP_DLL_VIS __declspec(dllimport) 633# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 634# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 635# define _LIBCPP_OVERRIDABLE_FUNC_VIS 636# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 637#endif 638 639#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 640#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 641#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 642#define _LIBCPP_HIDDEN 643#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 644#define _LIBCPP_TEMPLATE_VIS 645#define _LIBCPP_ENUM_VIS 646 647#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 648 649#ifndef _LIBCPP_HIDDEN 650# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 651# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 652# else 653# define _LIBCPP_HIDDEN 654# endif 655#endif 656 657#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 658# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 659// The inline should be removed once PR32114 is resolved 660# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 661# else 662# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 663# endif 664#endif 665 666#ifndef _LIBCPP_FUNC_VIS 667# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 668# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 669# else 670# define _LIBCPP_FUNC_VIS 671# endif 672#endif 673 674#ifndef _LIBCPP_TYPE_VIS 675# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 676# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 677# else 678# define _LIBCPP_TYPE_VIS 679# endif 680#endif 681 682#ifndef _LIBCPP_TEMPLATE_VIS 683# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 684# if __has_attribute(__type_visibility__) 685# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 686# else 687# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 688# endif 689# else 690# define _LIBCPP_TEMPLATE_VIS 691# endif 692#endif 693 694#ifndef _LIBCPP_EXPORTED_FROM_ABI 695# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 696# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 697# else 698# define _LIBCPP_EXPORTED_FROM_ABI 699# endif 700#endif 701 702#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 703#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 704#endif 705 706#ifndef _LIBCPP_EXCEPTION_ABI 707# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 708# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 709# else 710# define _LIBCPP_EXCEPTION_ABI 711# endif 712#endif 713 714#ifndef _LIBCPP_ENUM_VIS 715# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 716# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 717# else 718# define _LIBCPP_ENUM_VIS 719# endif 720#endif 721 722#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 723# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 724# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 725# else 726# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 727# endif 728#endif 729 730#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 731#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 732#endif 733 734#if __has_attribute(internal_linkage) 735# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 736#else 737# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 738#endif 739 740#if __has_attribute(exclude_from_explicit_instantiation) 741# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 742#else 743 // Try to approximate the effect of exclude_from_explicit_instantiation 744 // (which is that entities are not assumed to be provided by explicit 745 // template instantiations in the dylib) by always inlining those entities. 746# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 747#endif 748 749#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 750# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 751# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 752# else 753# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 754# endif 755#endif 756 757#ifndef _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 758# ifdef _LIBCPP_OBJECT_FORMAT_COFF // Windows binaries can't merge typeinfos. 759# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 2 760# else 761 // TODO: This isn't strictly correct on ELF platforms due to llvm.org/PR37398 762 // And we should consider defaulting to OFF. 763# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 1 764# endif 765#endif 766 767#ifndef _LIBCPP_HIDE_FROM_ABI 768# if _LIBCPP_HIDE_FROM_ABI_PER_TU 769# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 770# else 771# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 772# endif 773#endif 774 775#ifdef _LIBCPP_BUILDING_LIBRARY 776# if _LIBCPP_ABI_VERSION > 1 777# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 778# else 779# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 780# endif 781#else 782# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 783#endif 784 785// Just so we can migrate to the new macros gradually. 786#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 787 788// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 789#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 790#define _LIBCPP_END_NAMESPACE_STD } } 791#define _VSTD std::_LIBCPP_ABI_NAMESPACE 792_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 793 794#if _LIBCPP_STD_VER >= 17 795#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 796 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 797#else 798#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 799 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 800#endif 801 802#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 803 _LIBCPP_END_NAMESPACE_STD } } 804 805#define _VSTD_FS _VSTD::__fs::filesystem 806 807#ifndef _LIBCPP_PREFERRED_OVERLOAD 808# if __has_attribute(__enable_if__) 809# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 810# endif 811#endif 812 813#ifndef _LIBCPP_HAS_NO_NOEXCEPT 814# define _NOEXCEPT noexcept 815# define _NOEXCEPT_(x) noexcept(x) 816#else 817# define _NOEXCEPT throw() 818# define _NOEXCEPT_(x) 819#endif 820 821#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 822typedef unsigned short char16_t; 823typedef unsigned int char32_t; 824#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 825 826#ifndef __SIZEOF_INT128__ 827#define _LIBCPP_HAS_NO_INT128 828#endif 829 830#ifdef _LIBCPP_CXX03_LANG 831# define static_assert(...) _Static_assert(__VA_ARGS__) 832# define decltype(...) __decltype(__VA_ARGS__) 833#endif // _LIBCPP_CXX03_LANG 834 835#ifdef _LIBCPP_CXX03_LANG 836# define _LIBCPP_CONSTEXPR 837#else 838# define _LIBCPP_CONSTEXPR constexpr 839#endif 840 841#ifdef _LIBCPP_CXX03_LANG 842# define _LIBCPP_DEFAULT {} 843#else 844# define _LIBCPP_DEFAULT = default; 845#endif 846 847#ifdef _LIBCPP_CXX03_LANG 848# define _LIBCPP_EQUAL_DELETE 849#else 850# define _LIBCPP_EQUAL_DELETE = delete 851#endif 852 853#ifdef __GNUC__ 854# define _LIBCPP_NOALIAS __attribute__((__malloc__)) 855#else 856# define _LIBCPP_NOALIAS 857#endif 858 859#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 860 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 861# define _LIBCPP_EXPLICIT explicit 862#else 863# define _LIBCPP_EXPLICIT 864#endif 865 866#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 867#define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 868#endif 869 870#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 871# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 872# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 873 __lx __v_; \ 874 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 875 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 876 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 877 }; 878#else // _LIBCPP_HAS_NO_STRONG_ENUMS 879# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 880# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 881#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 882 883#ifdef _LIBCPP_DEBUG 884# if _LIBCPP_DEBUG == 0 885# define _LIBCPP_DEBUG_LEVEL 1 886# elif _LIBCPP_DEBUG == 1 887# define _LIBCPP_DEBUG_LEVEL 2 888# else 889# error Supported values for _LIBCPP_DEBUG are 0 and 1 890# endif 891# if !defined(_LIBCPP_BUILDING_LIBRARY) 892# define _LIBCPP_EXTERN_TEMPLATE(...) 893# endif 894#endif 895 896#ifndef _LIBCPP_DEBUG_LEVEL 897# define _LIBCPP_DEBUG_LEVEL 0 898#endif 899 900#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 901#define _LIBCPP_EXTERN_TEMPLATE(...) 902#define _LIBCPP_EXTERN_TEMPLATE2(...) 903#endif 904 905#ifndef _LIBCPP_EXTERN_TEMPLATE 906#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 907#endif 908 909#ifndef _LIBCPP_EXTERN_TEMPLATE2 910#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 911#endif 912 913#ifndef _LIBCPP_EXTERN_TEMPLATE_DEFINE 914#define _LIBCPP_EXTERN_TEMPLATE_DEFINE(...) template __VA_ARGS__; 915#endif 916 917#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 918 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 919#define _LIBCPP_LOCALE__L_EXTENSIONS 1 920#endif 921 922#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 923// Most unix variants have catopen. These are the specific ones that don't. 924# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 925# define _LIBCPP_HAS_CATOPEN 1 926# endif 927#endif 928 929#ifdef __FreeBSD__ 930#define _DECLARE_C99_LDBL_MATH 1 931#endif 932 933// If we are getting operator new from the MSVC CRT, then allocation overloads 934// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 935#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 936# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 937#elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) 938 // We're deferring to Microsoft's STL to provide aligned new et al. We don't 939 // have it unless the language feature test macro is defined. 940# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 941#endif 942 943#if defined(__APPLE__) 944# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 945 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 946# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 947# endif 948#endif // defined(__APPLE__) 949 950#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 951 (defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 952 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606)) 953# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 954#endif 955 956#if defined(__APPLE__) || defined(__FreeBSD__) 957#define _LIBCPP_HAS_DEFAULTRUNELOCALE 958#endif 959 960#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 961#define _LIBCPP_WCTYPE_IS_MASK 962#endif 963 964#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) 965#define _LIBCPP_NO_HAS_CHAR8_T 966#endif 967 968// Deprecation macros. 969// 970// Deprecations warnings are always enabled, except when users explicitly opt-out 971// by defining _LIBCPP_DISABLE_DEPRECATION_WARNINGS. 972#if !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) 973# if __has_attribute(deprecated) 974# define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 975# elif _LIBCPP_STD_VER > 11 976# define _LIBCPP_DEPRECATED [[deprecated]] 977# else 978# define _LIBCPP_DEPRECATED 979# endif 980#else 981# define _LIBCPP_DEPRECATED 982#endif 983 984#if !defined(_LIBCPP_CXX03_LANG) 985# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 986#else 987# define _LIBCPP_DEPRECATED_IN_CXX11 988#endif 989 990#if _LIBCPP_STD_VER >= 14 991# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 992#else 993# define _LIBCPP_DEPRECATED_IN_CXX14 994#endif 995 996#if _LIBCPP_STD_VER >= 17 997# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 998#else 999# define _LIBCPP_DEPRECATED_IN_CXX17 1000#endif 1001 1002// Macros to enter and leave a state where deprecation warnings are suppressed. 1003#if !defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH) && \ 1004 (defined(_LIBCPP_COMPILER_CLANG) || defined(_LIBCPP_COMPILER_GCC)) 1005# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \ 1006 _Pragma("GCC diagnostic push") \ 1007 _Pragma("GCC diagnostic ignored \"-Wdeprecated\"") 1008# define _LIBCPP_SUPPRESS_DEPRECATED_POP \ 1009 _Pragma("GCC diagnostic pop") 1010#endif 1011#if !defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH) 1012# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH 1013# define _LIBCPP_SUPPRESS_DEPRECATED_POP 1014#endif 1015 1016#if _LIBCPP_STD_VER <= 11 1017# define _LIBCPP_EXPLICIT_AFTER_CXX11 1018#else 1019# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1020#endif 1021 1022#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1023# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1024#else 1025# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1026#endif 1027 1028#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1029# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1030#else 1031# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1032#endif 1033 1034#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1035# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1036#else 1037# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1038#endif 1039 1040#if _LIBCPP_STD_VER > 17 && \ 1041 !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) && \ 1042 !defined(_LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED) 1043# define _LIBCPP_CONSTEXPR_AFTER_CXX17_WITH_IS_CONSTANT_EVALUATED constexpr 1044#else 1045# define _LIBCPP_CONSTEXPR_AFTER_CXX17_WITH_IS_CONSTANT_EVALUATED 1046#endif 1047 1048// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 1049// NODISCARD macros to the correct attribute. 1050#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1051# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 1052#elif defined(_LIBCPP_COMPILER_CLANG) && !defined(_LIBCPP_CXX03_LANG) 1053# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 1054#else 1055// We can't use GCC's [[gnu::warn_unused_result]] and 1056// __attribute__((warn_unused_result)), because GCC does not silence them via 1057// (void) cast. 1058# define _LIBCPP_NODISCARD_ATTRIBUTE 1059#endif 1060 1061// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1062// specified as such as an extension. 1063#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1064# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1065#else 1066# define _LIBCPP_NODISCARD_EXT 1067#endif 1068 1069#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1070 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1071# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1072#else 1073# define _LIBCPP_NODISCARD_AFTER_CXX17 1074#endif 1075 1076#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1077# define _LIBCPP_INLINE_VAR inline 1078#else 1079# define _LIBCPP_INLINE_VAR 1080#endif 1081 1082#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1083# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 1084#else 1085# define _LIBCPP_EXPLICIT_MOVE(x) (x) 1086#endif 1087 1088#ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG 1089#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1090#define _LIBCPP_CONSTEXPR_IF_NODEBUG 1091#else 1092#define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1093#endif 1094#endif 1095 1096#if __has_attribute(no_destroy) 1097# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__)) 1098#else 1099# define _LIBCPP_NO_DESTROY 1100#endif 1101 1102#ifndef _LIBCPP_HAS_NO_ASAN 1103_LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 1104 const void *, const void *, const void *, const void *); 1105#endif 1106 1107// Try to find out if RTTI is disabled. 1108#if defined(_LIBCPP_COMPILER_CLANG) && !__has_feature(cxx_rtti) 1109# define _LIBCPP_NO_RTTI 1110#elif defined(__GNUC__) && !defined(__GXX_RTTI) 1111# define _LIBCPP_NO_RTTI 1112#elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1113# define _LIBCPP_NO_RTTI 1114#endif 1115 1116#ifndef _LIBCPP_WEAK 1117#define _LIBCPP_WEAK __attribute__((__weak__)) 1118#endif 1119 1120// Thread API 1121#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1122 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1123 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1124 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1125# if defined(__FreeBSD__) || \ 1126 defined(__wasi__) || \ 1127 defined(__NetBSD__) || \ 1128 defined(__linux__) || \ 1129 defined(__GNU__) || \ 1130 defined(__APPLE__) || \ 1131 defined(__CloudABI__) || \ 1132 defined(__sun__) || \ 1133 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1134# define _LIBCPP_HAS_THREAD_API_PTHREAD 1135# elif defined(__Fuchsia__) 1136 // TODO(44575): Switch to C11 thread API when possible. 1137# define _LIBCPP_HAS_THREAD_API_PTHREAD 1138# elif defined(_LIBCPP_WIN32API) 1139# define _LIBCPP_HAS_THREAD_API_WIN32 1140# else 1141# error "No thread API" 1142# endif // _LIBCPP_HAS_THREAD_API 1143#endif // _LIBCPP_HAS_NO_THREADS 1144 1145#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1146#if defined(__ANDROID__) && __ANDROID_API__ >= 30 1147#define _LIBCPP_HAS_COND_CLOCKWAIT 1148#elif defined(_LIBCPP_GLIBC_PREREQ) 1149#if _LIBCPP_GLIBC_PREREQ(2, 30) 1150#define _LIBCPP_HAS_COND_CLOCKWAIT 1151#endif 1152#endif 1153#endif 1154 1155#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1156#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1157 _LIBCPP_HAS_NO_THREADS is not defined. 1158#endif 1159 1160#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1161#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1162 _LIBCPP_HAS_NO_THREADS is defined. 1163#endif 1164 1165#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1166#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1167 _LIBCPP_HAS_NO_THREADS is defined. 1168#endif 1169 1170#if defined(__STDCPP_THREADS__) && defined(_LIBCPP_HAS_NO_THREADS) 1171#error _LIBCPP_HAS_NO_THREADS cannot be set when __STDCPP_THREADS__ is set. 1172#endif 1173 1174#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(__STDCPP_THREADS__) 1175#define __STDCPP_THREADS__ 1 1176#endif 1177 1178// The glibc and Bionic implementation of pthreads implements 1179// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 1180// mutexes have no destroy mechanism. 1181// 1182// This optimization can't be performed on Apple platforms, where 1183// pthread_mutex_destroy can allow the kernel to release resources. 1184// See https://llvm.org/D64298 for details. 1185// 1186// TODO(EricWF): Enable this optimization on Bionic after speaking to their 1187// respective stakeholders. 1188#if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) \ 1189 || (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) \ 1190 || defined(_LIBCPP_HAS_THREAD_API_WIN32) 1191# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 1192#endif 1193 1194// Destroying a condvar is a nop on Windows. 1195// 1196// This optimization can't be performed on Apple platforms, where 1197// pthread_cond_destroy can allow the kernel to release resources. 1198// See https://llvm.org/D64298 for details. 1199// 1200// TODO(EricWF): This is potentially true for some pthread implementations 1201// as well. 1202#if (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) || \ 1203 defined(_LIBCPP_HAS_THREAD_API_WIN32) 1204# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 1205#endif 1206 1207// Systems that use capability-based security (FreeBSD with Capsicum, 1208// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1209// Functions like open(), rename(), unlink() and stat() should not be 1210// used, as they attempt to access the global filesystem namespace. 1211#ifdef __CloudABI__ 1212#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1213#endif 1214 1215// CloudABI is intended for running networked services. Processes do not 1216// have standard input and output channels. 1217#ifdef __CloudABI__ 1218#define _LIBCPP_HAS_NO_STDIN 1219#define _LIBCPP_HAS_NO_STDOUT 1220#endif 1221 1222// Some systems do not provide gets() in their C library, for security reasons. 1223#ifndef _LIBCPP_C_HAS_NO_GETS 1224# if defined(_LIBCPP_MSVCRT) || \ 1225 (defined(__FreeBSD_version) && __FreeBSD_version >= 1300043) 1226# define _LIBCPP_C_HAS_NO_GETS 1227# endif 1228#endif 1229 1230#if defined(__BIONIC__) || defined(__CloudABI__) || \ 1231 defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC) 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 defined(_LIBCPP_ABI_MICROSOFT) && \ 1341 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1342# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1343#else 1344# define _LIBCPP_DECLSPEC_EMPTY_BASES 1345#endif 1346 1347#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1348#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1349#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1350#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1351#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1352#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1353 1354#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1355#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1356#endif 1357 1358#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1359#define _LIBCPP_HAS_NO_IS_AGGREGATE 1360#endif 1361 1362#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1363#define _LIBCPP_HAS_NO_COROUTINES 1364#endif 1365 1366#if !defined(__cpp_impl_three_way_comparison) || __cpp_impl_three_way_comparison < 201907L 1367#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1368#endif 1369 1370// Decide whether to use availability macros. 1371#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1372 !defined(_LIBCXXABI_BUILDING_LIBRARY) && \ 1373 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1374 __has_feature(attribute_availability_with_strict) && \ 1375 __has_feature(attribute_availability_in_templates) && \ 1376 __has_extension(pragma_clang_attribute_external_declaration) 1377# ifdef __APPLE__ 1378# define _LIBCPP_USE_AVAILABILITY_APPLE 1379# endif 1380#endif 1381 1382// Define availability macros. 1383#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1384# define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1385 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1386 __attribute__((availability(ios,strict,introduced=10.0))) \ 1387 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1388 __attribute__((availability(watchos,strict,introduced=3.0))) 1389# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS \ 1390 __attribute__((availability(macosx,strict,introduced=10.13))) \ 1391 __attribute__((availability(ios,strict,introduced=11.0))) \ 1392 __attribute__((availability(tvos,strict,introduced=11.0))) \ 1393 __attribute__((availability(watchos,strict,introduced=4.0))) 1394# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS \ 1395 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1396# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST \ 1397 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1398# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1399 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1400 __attribute__((availability(ios,strict,introduced=10.0))) \ 1401 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1402 __attribute__((availability(watchos,strict,introduced=3.0))) 1403# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1404 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1405 __attribute__((availability(ios,strict,introduced=10.0))) \ 1406 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1407 __attribute__((availability(watchos,strict,introduced=3.0))) 1408# define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1409 __attribute__((availability(ios,strict,introduced=6.0))) 1410# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1411 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1412 __attribute__((availability(ios,strict,introduced=7.0))) 1413# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1414 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1415 __attribute__((availability(ios,strict,introduced=7.0))) 1416# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1417 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1418 __attribute__((availability(ios,strict,introduced=7.0))) 1419# define _LIBCPP_AVAILABILITY_FILESYSTEM \ 1420 __attribute__((availability(macosx,strict,introduced=10.15))) \ 1421 __attribute__((availability(ios,strict,introduced=13.0))) \ 1422 __attribute__((availability(tvos,strict,introduced=13.0))) \ 1423 __attribute__((availability(watchos,strict,introduced=6.0))) 1424# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH \ 1425 _Pragma("clang attribute push(__attribute__((availability(macosx,strict,introduced=10.15))), apply_to=any(function,record))") \ 1426 _Pragma("clang attribute push(__attribute__((availability(ios,strict,introduced=13.0))), apply_to=any(function,record))") \ 1427 _Pragma("clang attribute push(__attribute__((availability(tvos,strict,introduced=13.0))), apply_to=any(function,record))") \ 1428 _Pragma("clang attribute push(__attribute__((availability(watchos,strict,introduced=6.0))), apply_to=any(function,record))") 1429# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP \ 1430 _Pragma("clang attribute pop") \ 1431 _Pragma("clang attribute pop") \ 1432 _Pragma("clang attribute pop") \ 1433 _Pragma("clang attribute pop") 1434# define _LIBCPP_AVAILABILITY_TO_CHARS \ 1435 _LIBCPP_AVAILABILITY_FILESYSTEM 1436# define _LIBCPP_AVAILABILITY_SYNC \ 1437 __attribute__((unavailable)) 1438#else 1439# define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1440# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1441# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1442# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1443# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1444# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1445# define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1446# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1447# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1448# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1449# define _LIBCPP_AVAILABILITY_FILESYSTEM 1450# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH 1451# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP 1452# define _LIBCPP_AVAILABILITY_TO_CHARS 1453# define _LIBCPP_AVAILABILITY_SYNC 1454#endif 1455 1456// Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1457#ifdef _LIBCPP_NO_EXCEPTIONS 1458# define _LIBCPP_AVAILABILITY_FUTURE 1459# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1460# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS 1461# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS 1462#else 1463# define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1464# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1465# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1466# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1467#endif 1468 1469// The stream API was dropped and re-added in the dylib shipped on macOS 1470// and iOS. We can only assume the dylib to provide these definitions for 1471// macosx >= 10.9 and ios >= 7.0. Otherwise, the definitions are available 1472// from the headers, but not from the dylib. Explicit instantiation 1473// declarations for streams exist conditionally to this; if we provide 1474// an explicit instantiation declaration and we try to deploy to a dylib 1475// that does not provide those symbols, we'll get a load-time error. 1476#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1477 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1478 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1479 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1480 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1481# define _LIBCPP_DO_NOT_ASSUME_STREAMS_EXPLICIT_INSTANTIATION_IN_DYLIB 1482#endif 1483 1484#if defined(_LIBCPP_COMPILER_IBM) 1485#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1486#endif 1487 1488#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1489# define _LIBCPP_PUSH_MACROS 1490# define _LIBCPP_POP_MACROS 1491#else 1492 // Don't warn about macro conflicts when we can restore them at the 1493 // end of the header. 1494# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1495# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1496# endif 1497# if defined(_LIBCPP_COMPILER_MSVC) 1498# define _LIBCPP_PUSH_MACROS \ 1499 __pragma(push_macro("min")) \ 1500 __pragma(push_macro("max")) 1501# define _LIBCPP_POP_MACROS \ 1502 __pragma(pop_macro("min")) \ 1503 __pragma(pop_macro("max")) 1504# else 1505# define _LIBCPP_PUSH_MACROS \ 1506 _Pragma("push_macro(\"min\")") \ 1507 _Pragma("push_macro(\"max\")") 1508# define _LIBCPP_POP_MACROS \ 1509 _Pragma("pop_macro(\"min\")") \ 1510 _Pragma("pop_macro(\"max\")") 1511# endif 1512#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1513 1514#ifndef _LIBCPP_NO_AUTO_LINK 1515# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1516# if defined(_DLL) 1517# pragma comment(lib, "c++.lib") 1518# else 1519# pragma comment(lib, "libc++.lib") 1520# endif 1521# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1522#endif // _LIBCPP_NO_AUTO_LINK 1523 1524#define _LIBCPP_UNUSED_VAR(x) ((void)(x)) 1525 1526// Configures the fopen close-on-exec mode character, if any. This string will 1527// be appended to any mode string used by fstream for fopen/fdopen. 1528// 1529// Not all platforms support this, but it helps avoid fd-leaks on platforms that 1530// do. 1531#if defined(__BIONIC__) 1532# define _LIBCPP_FOPEN_CLOEXEC_MODE "e" 1533#else 1534# define _LIBCPP_FOPEN_CLOEXEC_MODE 1535#endif 1536 1537#ifdef _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 1538#define _LIBCPP_BUILTIN_CONSTANT_P(x) __builtin_constant_p(x) 1539#else 1540#define _LIBCPP_BUILTIN_CONSTANT_P(x) false 1541#endif 1542 1543// Support for _FILE_OFFSET_BITS=64 landed gradually in Android, so the full set 1544// of functions used in cstdio may not be available for low API levels when 1545// using 64-bit file offsets on LP32. 1546#if defined(__BIONIC__) && defined(__USE_FILE_OFFSET64) && __ANDROID_API__ < 24 1547#define _LIBCPP_HAS_NO_FGETPOS_FSETPOS 1548#endif 1549 1550#endif // __cplusplus 1551 1552#endif // _LIBCPP_CONFIG 1553