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// _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for 402// _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility. 403#if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 404 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2)) || \ 405 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 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)) && !defined(_LIBCPP_NO_EXCEPTIONS) 423#define _LIBCPP_NO_EXCEPTIONS 424#endif 425 426#if !(__has_feature(cxx_rtti)) && !defined(_LIBCPP_NO_RTTI) 427#define _LIBCPP_NO_RTTI 428#endif 429 430#if !(__has_feature(cxx_strong_enums)) 431#define _LIBCPP_HAS_NO_STRONG_ENUMS 432#endif 433 434#if __has_feature(cxx_attributes) 435# define _LIBCPP_NORETURN [[noreturn]] 436#else 437# define _LIBCPP_NORETURN __attribute__ ((noreturn)) 438#endif 439 440#if !(__has_feature(cxx_lambdas)) 441#define _LIBCPP_HAS_NO_LAMBDAS 442#endif 443 444#if !(__has_feature(cxx_nullptr)) 445# if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 446# define nullptr __nullptr 447# else 448# define _LIBCPP_HAS_NO_NULLPTR 449# endif 450#endif 451 452#if !(__has_feature(cxx_rvalue_references)) 453#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 454#endif 455 456#if !(__has_feature(cxx_auto_type)) 457#define _LIBCPP_HAS_NO_AUTO_TYPE 458#endif 459 460#if !(__has_feature(cxx_variadic_templates)) 461#define _LIBCPP_HAS_NO_VARIADICS 462#endif 463 464// Objective-C++ features (opt-in) 465#if __has_feature(objc_arc) 466#define _LIBCPP_HAS_OBJC_ARC 467#endif 468 469#if __has_feature(objc_arc_weak) 470#define _LIBCPP_HAS_OBJC_ARC_WEAK 471#endif 472 473#if __has_extension(blocks) 474# define _LIBCPP_HAS_EXTENSION_BLOCKS 475#endif 476 477#if defined(_LIBCPP_HAS_EXTENSION_BLOCKS) && defined(__APPLE__) 478# define _LIBCPP_HAS_BLOCKS_RUNTIME 479#endif 480 481#if !(__has_feature(cxx_relaxed_constexpr)) 482#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 483#endif 484 485#if !(__has_feature(cxx_variable_templates)) 486#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 487#endif 488 489#if !(__has_feature(cxx_noexcept)) 490#define _LIBCPP_HAS_NO_NOEXCEPT 491#endif 492 493#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 494#define _LIBCPP_HAS_NO_ASAN 495#endif 496 497// Allow for build-time disabling of unsigned integer sanitization 498#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 499#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 500#endif 501 502#if __has_builtin(__builtin_launder) 503#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 504#endif 505 506#if __has_builtin(__builtin_constant_p) 507#define _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 508#endif 509 510#if !__is_identifier(__has_unique_object_representations) 511#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 512#endif 513 514#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 515 516// Literal operators ""d and ""y are supported starting with LLVM Clang 8 and AppleClang 10.0.1 517#if (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 800) || \ 518 (defined(__apple_build_version__) && __apple_build_version__ < 10010000) 519#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS 520#endif 521 522#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 523 524#elif defined(_LIBCPP_COMPILER_GCC) 525 526#define _ALIGNAS(x) __attribute__((__aligned__(x))) 527#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 528 529#define _LIBCPP_NORETURN __attribute__((noreturn)) 530 531#if !__EXCEPTIONS && !defined(_LIBCPP_NO_EXCEPTIONS) 532#define _LIBCPP_NO_EXCEPTIONS 533#endif 534 535// Determine if GCC supports relaxed constexpr 536#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 537#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 538#endif 539 540// GCC 5 supports variable templates 541#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 542#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 543#endif 544 545#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 546#define _LIBCPP_HAS_NO_ASAN 547#endif 548 549#if _GNUC_VER >= 700 550#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 551#define _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 552#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 553#endif 554 555#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 556 557#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 558 559#elif defined(_LIBCPP_COMPILER_MSVC) 560 561#define _LIBCPP_TOSTRING2(x) #x 562#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 563#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 564 565#if _MSC_VER < 1900 566#error "MSVC versions prior to Visual Studio 2015 are not supported" 567#endif 568 569#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 570#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 571#define __alignof__ __alignof 572#define _LIBCPP_NORETURN __declspec(noreturn) 573#define _ALIGNAS(x) __declspec(align(x)) 574#define _ALIGNAS_TYPE(x) alignas(x) 575 576#define _LIBCPP_WEAK 577 578#define _LIBCPP_HAS_NO_ASAN 579 580#define _LIBCPP_ALWAYS_INLINE __forceinline 581 582#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 583 584#define _LIBCPP_DISABLE_EXTENSION_WARNING 585 586#elif defined(_LIBCPP_COMPILER_IBM) 587 588#define _ALIGNAS(x) __attribute__((__aligned__(x))) 589#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 590#define _ATTRIBUTE(x) __attribute__((x)) 591#define _LIBCPP_NORETURN __attribute__((noreturn)) 592 593#define _LIBCPP_HAS_NO_UNICODE_CHARS 594#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 595 596#if defined(_AIX) 597#define __MULTILOCALE_API 598#endif 599 600#define _LIBCPP_HAS_NO_ASAN 601 602#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 603 604#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 605 606#define _LIBCPP_DISABLE_EXTENSION_WARNING 607 608#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 609 610#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 611 612#ifdef _DLL 613# define _LIBCPP_CRT_FUNC __declspec(dllimport) 614#else 615# define _LIBCPP_CRT_FUNC 616#endif 617 618#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 619# define _LIBCPP_DLL_VIS 620# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 621# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 622# define _LIBCPP_OVERRIDABLE_FUNC_VIS 623# define _LIBCPP_EXPORTED_FROM_ABI 624#elif defined(_LIBCPP_BUILDING_LIBRARY) 625# define _LIBCPP_DLL_VIS __declspec(dllexport) 626# if defined(__MINGW32__) 627# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 628# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 629# else 630# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 631# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 632# endif 633# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 634# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 635#else 636# define _LIBCPP_DLL_VIS __declspec(dllimport) 637# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 638# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 639# define _LIBCPP_OVERRIDABLE_FUNC_VIS 640# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 641#endif 642 643#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 644#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 645#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 646#define _LIBCPP_HIDDEN 647#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 648#define _LIBCPP_TEMPLATE_VIS 649#define _LIBCPP_ENUM_VIS 650 651#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 652 653#ifndef _LIBCPP_HIDDEN 654# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 655# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 656# else 657# define _LIBCPP_HIDDEN 658# endif 659#endif 660 661#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 662# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 663// The inline should be removed once PR32114 is resolved 664# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 665# else 666# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 667# endif 668#endif 669 670#ifndef _LIBCPP_FUNC_VIS 671# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 672# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 673# else 674# define _LIBCPP_FUNC_VIS 675# endif 676#endif 677 678#ifndef _LIBCPP_TYPE_VIS 679# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 680# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 681# else 682# define _LIBCPP_TYPE_VIS 683# endif 684#endif 685 686#ifndef _LIBCPP_TEMPLATE_VIS 687# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 688# if __has_attribute(__type_visibility__) 689# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 690# else 691# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 692# endif 693# else 694# define _LIBCPP_TEMPLATE_VIS 695# endif 696#endif 697 698#ifndef _LIBCPP_EXPORTED_FROM_ABI 699# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 700# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 701# else 702# define _LIBCPP_EXPORTED_FROM_ABI 703# endif 704#endif 705 706#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 707#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 708#endif 709 710#ifndef _LIBCPP_EXCEPTION_ABI 711# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 712# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 713# else 714# define _LIBCPP_EXCEPTION_ABI 715# endif 716#endif 717 718#ifndef _LIBCPP_ENUM_VIS 719# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 720# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 721# else 722# define _LIBCPP_ENUM_VIS 723# endif 724#endif 725 726#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 727# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 728# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 729# else 730# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 731# endif 732#endif 733 734#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 735#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 736#endif 737 738#if __has_attribute(internal_linkage) 739# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 740#else 741# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 742#endif 743 744#if __has_attribute(exclude_from_explicit_instantiation) 745# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 746#else 747 // Try to approximate the effect of exclude_from_explicit_instantiation 748 // (which is that entities are not assumed to be provided by explicit 749 // template instantiations in the dylib) by always inlining those entities. 750# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 751#endif 752 753#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 754# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 755# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 756# else 757# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 758# endif 759#endif 760 761#ifndef _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 762# ifdef _LIBCPP_OBJECT_FORMAT_COFF // Windows binaries can't merge typeinfos. 763# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 2 764# else 765 // TODO: This isn't strictly correct on ELF platforms due to llvm.org/PR37398 766 // And we should consider defaulting to OFF. 767# define _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION 1 768# endif 769#endif 770 771#ifndef _LIBCPP_HIDE_FROM_ABI 772# if _LIBCPP_HIDE_FROM_ABI_PER_TU 773# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 774# else 775# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 776# endif 777#endif 778 779#ifdef _LIBCPP_BUILDING_LIBRARY 780# if _LIBCPP_ABI_VERSION > 1 781# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 782# else 783# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 784# endif 785#else 786# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 787#endif 788 789// Just so we can migrate to the new macros gradually. 790#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 791 792// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 793#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 794#define _LIBCPP_END_NAMESPACE_STD } } 795#define _VSTD std::_LIBCPP_ABI_NAMESPACE 796_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 797 798#if _LIBCPP_STD_VER >= 17 799#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 800 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 801#else 802#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 803 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 804#endif 805 806#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 807 _LIBCPP_END_NAMESPACE_STD } } 808 809#define _VSTD_FS _VSTD::__fs::filesystem 810 811#ifndef _LIBCPP_PREFERRED_OVERLOAD 812# if __has_attribute(__enable_if__) 813# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 814# endif 815#endif 816 817#ifndef _LIBCPP_HAS_NO_NOEXCEPT 818# define _NOEXCEPT noexcept 819# define _NOEXCEPT_(x) noexcept(x) 820#else 821# define _NOEXCEPT throw() 822# define _NOEXCEPT_(x) 823#endif 824 825#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 826typedef unsigned short char16_t; 827typedef unsigned int char32_t; 828#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 829 830#ifndef __SIZEOF_INT128__ 831#define _LIBCPP_HAS_NO_INT128 832#endif 833 834#ifdef _LIBCPP_CXX03_LANG 835# define static_assert(...) _Static_assert(__VA_ARGS__) 836# define decltype(...) __decltype(__VA_ARGS__) 837#endif // _LIBCPP_CXX03_LANG 838 839#ifdef _LIBCPP_CXX03_LANG 840# define _LIBCPP_CONSTEXPR 841#else 842# define _LIBCPP_CONSTEXPR constexpr 843#endif 844 845#ifdef _LIBCPP_CXX03_LANG 846# define _LIBCPP_DEFAULT {} 847#else 848# define _LIBCPP_DEFAULT = default; 849#endif 850 851#ifdef _LIBCPP_CXX03_LANG 852# define _LIBCPP_EQUAL_DELETE 853#else 854# define _LIBCPP_EQUAL_DELETE = delete 855#endif 856 857#ifdef __GNUC__ 858# define _LIBCPP_NOALIAS __attribute__((__malloc__)) 859#else 860# define _LIBCPP_NOALIAS 861#endif 862 863#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 864 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 865# define _LIBCPP_EXPLICIT explicit 866#else 867# define _LIBCPP_EXPLICIT 868#endif 869 870#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 871#define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 872#endif 873 874#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 875# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 876# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 877 __lx __v_; \ 878 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 879 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 880 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 881 }; 882#else // _LIBCPP_HAS_NO_STRONG_ENUMS 883# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 884# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 885#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 886 887#ifdef _LIBCPP_DEBUG 888# if _LIBCPP_DEBUG == 0 889# define _LIBCPP_DEBUG_LEVEL 1 890# elif _LIBCPP_DEBUG == 1 891# define _LIBCPP_DEBUG_LEVEL 2 892# else 893# error Supported values for _LIBCPP_DEBUG are 0 and 1 894# endif 895# if !defined(_LIBCPP_BUILDING_LIBRARY) 896# define _LIBCPP_EXTERN_TEMPLATE(...) 897# endif 898#endif 899 900#ifndef _LIBCPP_DEBUG_LEVEL 901# define _LIBCPP_DEBUG_LEVEL 0 902#endif 903 904#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 905#define _LIBCPP_EXTERN_TEMPLATE(...) 906#define _LIBCPP_EXTERN_TEMPLATE2(...) 907#endif 908 909#ifndef _LIBCPP_EXTERN_TEMPLATE 910#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 911#endif 912 913#ifndef _LIBCPP_EXTERN_TEMPLATE2 914#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 915#endif 916 917#ifndef _LIBCPP_EXTERN_TEMPLATE_DEFINE 918#define _LIBCPP_EXTERN_TEMPLATE_DEFINE(...) template __VA_ARGS__; 919#endif 920 921#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 922 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 923#define _LIBCPP_LOCALE__L_EXTENSIONS 1 924#endif 925 926#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 927// Most unix variants have catopen. These are the specific ones that don't. 928# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 929# define _LIBCPP_HAS_CATOPEN 1 930# endif 931#endif 932 933#ifdef __FreeBSD__ 934#define _DECLARE_C99_LDBL_MATH 1 935#endif 936 937// If we are getting operator new from the MSVC CRT, then allocation overloads 938// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 939#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 940# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 941#elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) 942 // We're deferring to Microsoft's STL to provide aligned new et al. We don't 943 // have it unless the language feature test macro is defined. 944# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 945#endif 946 947#if defined(__APPLE__) 948# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 949 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 950# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 951# endif 952#endif // defined(__APPLE__) 953 954#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 955 (defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 956 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606)) 957# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 958#endif 959 960#if defined(__APPLE__) || defined(__FreeBSD__) 961#define _LIBCPP_HAS_DEFAULTRUNELOCALE 962#endif 963 964#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 965#define _LIBCPP_WCTYPE_IS_MASK 966#endif 967 968#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) 969#define _LIBCPP_NO_HAS_CHAR8_T 970#endif 971 972// Deprecation macros. 973// 974// Deprecations warnings are always enabled, except when users explicitly opt-out 975// by defining _LIBCPP_DISABLE_DEPRECATION_WARNINGS. 976#if !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) 977# if __has_attribute(deprecated) 978# define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 979# elif _LIBCPP_STD_VER > 11 980# define _LIBCPP_DEPRECATED [[deprecated]] 981# else 982# define _LIBCPP_DEPRECATED 983# endif 984#else 985# define _LIBCPP_DEPRECATED 986#endif 987 988#if !defined(_LIBCPP_CXX03_LANG) 989# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 990#else 991# define _LIBCPP_DEPRECATED_IN_CXX11 992#endif 993 994#if _LIBCPP_STD_VER >= 14 995# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 996#else 997# define _LIBCPP_DEPRECATED_IN_CXX14 998#endif 999 1000#if _LIBCPP_STD_VER >= 17 1001# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 1002#else 1003# define _LIBCPP_DEPRECATED_IN_CXX17 1004#endif 1005 1006// Macros to enter and leave a state where deprecation warnings are suppressed. 1007#if !defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH) && \ 1008 (defined(_LIBCPP_COMPILER_CLANG) || defined(_LIBCPP_COMPILER_GCC)) 1009# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \ 1010 _Pragma("GCC diagnostic push") \ 1011 _Pragma("GCC diagnostic ignored \"-Wdeprecated\"") 1012# define _LIBCPP_SUPPRESS_DEPRECATED_POP \ 1013 _Pragma("GCC diagnostic pop") 1014#endif 1015#if !defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH) 1016# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH 1017# define _LIBCPP_SUPPRESS_DEPRECATED_POP 1018#endif 1019 1020#if _LIBCPP_STD_VER <= 11 1021# define _LIBCPP_EXPLICIT_AFTER_CXX11 1022#else 1023# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1024#endif 1025 1026#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1027# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1028#else 1029# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1030#endif 1031 1032#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1033# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1034#else 1035# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1036#endif 1037 1038#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1039# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1040#else 1041# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1042#endif 1043 1044#if _LIBCPP_STD_VER > 17 && \ 1045 !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) && \ 1046 !defined(_LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED) 1047# define _LIBCPP_CONSTEXPR_AFTER_CXX17_WITH_IS_CONSTANT_EVALUATED constexpr 1048#else 1049# define _LIBCPP_CONSTEXPR_AFTER_CXX17_WITH_IS_CONSTANT_EVALUATED 1050#endif 1051 1052// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 1053// NODISCARD macros to the correct attribute. 1054#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1055# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 1056#elif defined(_LIBCPP_COMPILER_CLANG) && !defined(_LIBCPP_CXX03_LANG) 1057# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 1058#else 1059// We can't use GCC's [[gnu::warn_unused_result]] and 1060// __attribute__((warn_unused_result)), because GCC does not silence them via 1061// (void) cast. 1062# define _LIBCPP_NODISCARD_ATTRIBUTE 1063#endif 1064 1065// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1066// specified as such as an extension. 1067#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1068# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1069#else 1070# define _LIBCPP_NODISCARD_EXT 1071#endif 1072 1073#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1074 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1075# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1076#else 1077# define _LIBCPP_NODISCARD_AFTER_CXX17 1078#endif 1079 1080#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1081# define _LIBCPP_INLINE_VAR inline 1082#else 1083# define _LIBCPP_INLINE_VAR 1084#endif 1085 1086#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1087# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 1088#else 1089# define _LIBCPP_EXPLICIT_MOVE(x) (x) 1090#endif 1091 1092#ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG 1093#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1094#define _LIBCPP_CONSTEXPR_IF_NODEBUG 1095#else 1096#define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1097#endif 1098#endif 1099 1100#if __has_attribute(no_destroy) 1101# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__)) 1102#else 1103# define _LIBCPP_NO_DESTROY 1104#endif 1105 1106#ifndef _LIBCPP_HAS_NO_ASAN 1107_LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 1108 const void *, const void *, const void *, const void *); 1109#endif 1110 1111// Try to find out if RTTI is disabled. 1112// g++ and cl.exe have RTTI on by default and define a macro when it is. 1113#if !defined(_LIBCPP_NO_RTTI) 1114# if defined(__GNUC__) && !defined(__GXX_RTTI) 1115# define _LIBCPP_NO_RTTI 1116# elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1117# define _LIBCPP_NO_RTTI 1118# endif 1119#endif 1120 1121#ifndef _LIBCPP_WEAK 1122#define _LIBCPP_WEAK __attribute__((__weak__)) 1123#endif 1124 1125// Thread API 1126#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1127 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1128 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1129 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1130# if defined(__FreeBSD__) || \ 1131 defined(__wasi__) || \ 1132 defined(__NetBSD__) || \ 1133 defined(__linux__) || \ 1134 defined(__GNU__) || \ 1135 defined(__APPLE__) || \ 1136 defined(__CloudABI__) || \ 1137 defined(__sun__) || \ 1138 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1139# define _LIBCPP_HAS_THREAD_API_PTHREAD 1140# elif defined(__Fuchsia__) 1141 // TODO(44575): Switch to C11 thread API when possible. 1142# define _LIBCPP_HAS_THREAD_API_PTHREAD 1143# elif defined(_LIBCPP_WIN32API) 1144# define _LIBCPP_HAS_THREAD_API_WIN32 1145# else 1146# error "No thread API" 1147# endif // _LIBCPP_HAS_THREAD_API 1148#endif // _LIBCPP_HAS_NO_THREADS 1149 1150#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1151#if defined(__ANDROID__) && __ANDROID_API__ >= 30 1152#define _LIBCPP_HAS_COND_CLOCKWAIT 1153#elif defined(_LIBCPP_GLIBC_PREREQ) 1154#if _LIBCPP_GLIBC_PREREQ(2, 30) 1155#define _LIBCPP_HAS_COND_CLOCKWAIT 1156#endif 1157#endif 1158#endif 1159 1160#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1161#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1162 _LIBCPP_HAS_NO_THREADS is not defined. 1163#endif 1164 1165#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1166#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1167 _LIBCPP_HAS_NO_THREADS is defined. 1168#endif 1169 1170#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1171#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1172 _LIBCPP_HAS_NO_THREADS is defined. 1173#endif 1174 1175#if defined(__STDCPP_THREADS__) && defined(_LIBCPP_HAS_NO_THREADS) 1176#error _LIBCPP_HAS_NO_THREADS cannot be set when __STDCPP_THREADS__ is set. 1177#endif 1178 1179#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(__STDCPP_THREADS__) 1180#define __STDCPP_THREADS__ 1 1181#endif 1182 1183// The glibc and Bionic implementation of pthreads implements 1184// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 1185// mutexes have no destroy mechanism. 1186// 1187// This optimization can't be performed on Apple platforms, where 1188// pthread_mutex_destroy can allow the kernel to release resources. 1189// See https://llvm.org/D64298 for details. 1190// 1191// TODO(EricWF): Enable this optimization on Bionic after speaking to their 1192// respective stakeholders. 1193#if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) \ 1194 || (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) \ 1195 || defined(_LIBCPP_HAS_THREAD_API_WIN32) 1196# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 1197#endif 1198 1199// Destroying a condvar is a nop on Windows. 1200// 1201// This optimization can't be performed on Apple platforms, where 1202// pthread_cond_destroy can allow the kernel to release resources. 1203// See https://llvm.org/D64298 for details. 1204// 1205// TODO(EricWF): This is potentially true for some pthread implementations 1206// as well. 1207#if (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) || \ 1208 defined(_LIBCPP_HAS_THREAD_API_WIN32) 1209# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 1210#endif 1211 1212// Systems that use capability-based security (FreeBSD with Capsicum, 1213// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1214// Functions like open(), rename(), unlink() and stat() should not be 1215// used, as they attempt to access the global filesystem namespace. 1216#ifdef __CloudABI__ 1217#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1218#endif 1219 1220// CloudABI is intended for running networked services. Processes do not 1221// have standard input and output channels. 1222#ifdef __CloudABI__ 1223#define _LIBCPP_HAS_NO_STDIN 1224#define _LIBCPP_HAS_NO_STDOUT 1225#endif 1226 1227// Some systems do not provide gets() in their C library, for security reasons. 1228#ifndef _LIBCPP_C_HAS_NO_GETS 1229# if defined(_LIBCPP_MSVCRT) || \ 1230 (defined(__FreeBSD_version) && __FreeBSD_version >= 1300043) 1231# define _LIBCPP_C_HAS_NO_GETS 1232# endif 1233#endif 1234 1235#if defined(__BIONIC__) || defined(__CloudABI__) || \ 1236 defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1237#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1238#endif 1239 1240// Thread-unsafe functions such as strtok() and localtime() 1241// are not available. 1242#ifdef __CloudABI__ 1243#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1244#endif 1245 1246#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1247# define _LIBCPP_HAS_C_ATOMIC_IMP 1248#elif defined(_LIBCPP_COMPILER_GCC) 1249# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1250#endif 1251 1252#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && \ 1253 !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) && \ 1254 !defined(_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP)) \ 1255 || defined(_LIBCPP_HAS_NO_THREADS) 1256# define _LIBCPP_HAS_NO_ATOMIC_HEADER 1257#else 1258# ifndef _LIBCPP_ATOMIC_FLAG_TYPE 1259# define _LIBCPP_ATOMIC_FLAG_TYPE bool 1260# endif 1261# ifdef _LIBCPP_FREESTANDING 1262# define _LIBCPP_ATOMIC_ONLY_USE_BUILTINS 1263# endif 1264#endif 1265 1266#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1267#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1268#endif 1269 1270#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1271# if defined(__clang__) && __has_attribute(acquire_capability) 1272// Work around the attribute handling in clang. When both __declspec and 1273// __attribute__ are present, the processing goes awry preventing the definition 1274// of the types. 1275# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1276# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1277# endif 1278# endif 1279#endif 1280 1281#ifndef _LIBCPP_THREAD_SAFETY_ANNOTATION 1282# ifdef _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1283# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) __attribute__((x)) 1284# else 1285# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) 1286# endif 1287#endif // _LIBCPP_THREAD_SAFETY_ANNOTATION 1288 1289#if __has_attribute(require_constant_initialization) 1290# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1291#else 1292# define _LIBCPP_SAFE_STATIC 1293#endif 1294 1295#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1296#define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1297#endif 1298 1299#if !__has_builtin(__builtin_is_constant_evaluated) && _GNUC_VER < 900 1300#define _LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED 1301#endif 1302 1303#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1304# if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1305# define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1306# endif 1307#endif 1308 1309#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1310# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1311 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1312# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1313 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1314#else 1315# define _LIBCPP_DIAGNOSE_WARNING(...) 1316# define _LIBCPP_DIAGNOSE_ERROR(...) 1317#endif 1318 1319// Use a function like macro to imply that it must be followed by a semicolon 1320#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1321# define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1322#elif __has_cpp_attribute(clang::fallthrough) 1323# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1324#elif __has_attribute(fallthrough) || _GNUC_VER >= 700 1325# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1326#else 1327# define _LIBCPP_FALLTHROUGH() ((void)0) 1328#endif 1329 1330#if __has_attribute(__nodebug__) 1331#define _LIBCPP_NODEBUG __attribute__((__nodebug__)) 1332#else 1333#define _LIBCPP_NODEBUG 1334#endif 1335 1336#ifndef _LIBCPP_NODEBUG_TYPE 1337#if __has_attribute(__nodebug__) && \ 1338 (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 900) 1339#define _LIBCPP_NODEBUG_TYPE __attribute__((nodebug)) 1340#else 1341#define _LIBCPP_NODEBUG_TYPE 1342#endif 1343#endif // !defined(_LIBCPP_NODEBUG_TYPE) 1344 1345#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1346 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1347# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1348#else 1349# define _LIBCPP_DECLSPEC_EMPTY_BASES 1350#endif 1351 1352#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1353#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1354#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1355#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1356#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1357#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1358 1359#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1360#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1361#endif 1362 1363#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1364#define _LIBCPP_HAS_NO_IS_AGGREGATE 1365#endif 1366 1367#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1368#define _LIBCPP_HAS_NO_COROUTINES 1369#endif 1370 1371#if !defined(__cpp_impl_three_way_comparison) || __cpp_impl_three_way_comparison < 201907L 1372#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1373#endif 1374 1375// Decide whether to use availability macros. 1376#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1377 !defined(_LIBCXXABI_BUILDING_LIBRARY) && \ 1378 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1379 __has_feature(attribute_availability_with_strict) && \ 1380 __has_feature(attribute_availability_in_templates) && \ 1381 __has_extension(pragma_clang_attribute_external_declaration) 1382# ifdef __APPLE__ 1383# define _LIBCPP_USE_AVAILABILITY_APPLE 1384# endif 1385#endif 1386 1387// Define availability macros. 1388#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1389# define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1390 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1391 __attribute__((availability(ios,strict,introduced=10.0))) \ 1392 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1393 __attribute__((availability(watchos,strict,introduced=3.0))) 1394# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS \ 1395 __attribute__((availability(macosx,strict,introduced=10.14))) \ 1396 __attribute__((availability(ios,strict,introduced=12.0))) \ 1397 __attribute__((availability(tvos,strict,introduced=12.0))) \ 1398 __attribute__((availability(watchos,strict,introduced=5.0))) 1399# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS \ 1400 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1401# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST \ 1402 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1403# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 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_SIZED_NEW_DELETE \ 1409 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1410 __attribute__((availability(ios,strict,introduced=10.0))) \ 1411 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1412 __attribute__((availability(watchos,strict,introduced=3.0))) 1413# define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1414 __attribute__((availability(ios,strict,introduced=6.0))) 1415# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1416 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1417 __attribute__((availability(ios,strict,introduced=7.0))) 1418# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1419 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1420 __attribute__((availability(ios,strict,introduced=7.0))) 1421# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1422 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1423 __attribute__((availability(ios,strict,introduced=7.0))) 1424# define _LIBCPP_AVAILABILITY_FILESYSTEM \ 1425 __attribute__((availability(macosx,strict,introduced=10.15))) \ 1426 __attribute__((availability(ios,strict,introduced=13.0))) \ 1427 __attribute__((availability(tvos,strict,introduced=13.0))) \ 1428 __attribute__((availability(watchos,strict,introduced=6.0))) 1429# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH \ 1430 _Pragma("clang attribute push(__attribute__((availability(macosx,strict,introduced=10.15))), apply_to=any(function,record))") \ 1431 _Pragma("clang attribute push(__attribute__((availability(ios,strict,introduced=13.0))), apply_to=any(function,record))") \ 1432 _Pragma("clang attribute push(__attribute__((availability(tvos,strict,introduced=13.0))), apply_to=any(function,record))") \ 1433 _Pragma("clang attribute push(__attribute__((availability(watchos,strict,introduced=6.0))), apply_to=any(function,record))") 1434# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP \ 1435 _Pragma("clang attribute pop") \ 1436 _Pragma("clang attribute pop") \ 1437 _Pragma("clang attribute pop") \ 1438 _Pragma("clang attribute pop") 1439# define _LIBCPP_AVAILABILITY_TO_CHARS \ 1440 _LIBCPP_AVAILABILITY_FILESYSTEM 1441# define _LIBCPP_AVAILABILITY_SYNC \ 1442 __attribute__((unavailable)) 1443#else 1444# define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1445# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1446# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1447# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1448# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1449# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1450# define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1451# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1452# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1453# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1454# define _LIBCPP_AVAILABILITY_FILESYSTEM 1455# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH 1456# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP 1457# define _LIBCPP_AVAILABILITY_TO_CHARS 1458# define _LIBCPP_AVAILABILITY_SYNC 1459#endif 1460 1461// Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1462#ifdef _LIBCPP_NO_EXCEPTIONS 1463# define _LIBCPP_AVAILABILITY_FUTURE 1464# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1465# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS 1466# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS 1467#else 1468# define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1469# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1470# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1471# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1472#endif 1473 1474// The stream API was dropped and re-added in the dylib shipped on macOS 1475// and iOS. We can only assume the dylib to provide these definitions for 1476// macosx >= 10.9 and ios >= 7.0. Otherwise, the definitions are available 1477// from the headers, but not from the dylib. Explicit instantiation 1478// declarations for streams exist conditionally to this; if we provide 1479// an explicit instantiation declaration and we try to deploy to a dylib 1480// that does not provide those symbols, we'll get a load-time error. 1481#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1482 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1483 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1484 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1485 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1486# define _LIBCPP_DO_NOT_ASSUME_STREAMS_EXPLICIT_INSTANTIATION_IN_DYLIB 1487#endif 1488 1489#if defined(_LIBCPP_COMPILER_IBM) 1490#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1491#endif 1492 1493#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1494# define _LIBCPP_PUSH_MACROS 1495# define _LIBCPP_POP_MACROS 1496#else 1497 // Don't warn about macro conflicts when we can restore them at the 1498 // end of the header. 1499# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1500# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1501# endif 1502# if defined(_LIBCPP_COMPILER_MSVC) 1503# define _LIBCPP_PUSH_MACROS \ 1504 __pragma(push_macro("min")) \ 1505 __pragma(push_macro("max")) 1506# define _LIBCPP_POP_MACROS \ 1507 __pragma(pop_macro("min")) \ 1508 __pragma(pop_macro("max")) 1509# else 1510# define _LIBCPP_PUSH_MACROS \ 1511 _Pragma("push_macro(\"min\")") \ 1512 _Pragma("push_macro(\"max\")") 1513# define _LIBCPP_POP_MACROS \ 1514 _Pragma("pop_macro(\"min\")") \ 1515 _Pragma("pop_macro(\"max\")") 1516# endif 1517#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1518 1519#ifndef _LIBCPP_NO_AUTO_LINK 1520# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1521# if defined(_DLL) 1522# pragma comment(lib, "c++.lib") 1523# else 1524# pragma comment(lib, "libc++.lib") 1525# endif 1526# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1527#endif // _LIBCPP_NO_AUTO_LINK 1528 1529#define _LIBCPP_UNUSED_VAR(x) ((void)(x)) 1530 1531// Configures the fopen close-on-exec mode character, if any. This string will 1532// be appended to any mode string used by fstream for fopen/fdopen. 1533// 1534// Not all platforms support this, but it helps avoid fd-leaks on platforms that 1535// do. 1536#if defined(__BIONIC__) 1537# define _LIBCPP_FOPEN_CLOEXEC_MODE "e" 1538#else 1539# define _LIBCPP_FOPEN_CLOEXEC_MODE 1540#endif 1541 1542#ifdef _LIBCPP_COMPILER_HAS_BUILTIN_CONSTANT_P 1543#define _LIBCPP_BUILTIN_CONSTANT_P(x) __builtin_constant_p(x) 1544#else 1545#define _LIBCPP_BUILTIN_CONSTANT_P(x) false 1546#endif 1547 1548// Support for _FILE_OFFSET_BITS=64 landed gradually in Android, so the full set 1549// of functions used in cstdio may not be available for low API levels when 1550// using 64-bit file offsets on LP32. 1551#if defined(__BIONIC__) && defined(__USE_FILE_OFFSET64) && __ANDROID_API__ < 24 1552#define _LIBCPP_HAS_NO_FGETPOS_FSETPOS 1553#endif 1554 1555#endif // __cplusplus 1556 1557#endif // _LIBCPP_CONFIG 1558