1// -*- C++ -*- 2//===--------------------------- __config ---------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_CONFIG 12#define _LIBCPP_CONFIG 13 14#if defined(_MSC_VER) && !defined(__clang__) 15#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16#define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 17#endif 18#endif 19 20#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 21#pragma GCC system_header 22#endif 23 24#ifdef __cplusplus 25 26#ifdef __GNUC__ 27#define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__) 28// The _GNUC_VER_NEW macro better represents the new GCC versioning scheme 29// introduced in GCC 5.0. 30#define _GNUC_VER_NEW (_GNUC_VER * 10 + __GNUC_PATCHLEVEL__) 31#else 32#define _GNUC_VER 0 33#define _GNUC_VER_NEW 0 34#endif 35 36#define _LIBCPP_VERSION 6000 37 38#ifndef _LIBCPP_ABI_VERSION 39#define _LIBCPP_ABI_VERSION 1 40#endif 41 42#if defined(__ELF__) 43#define _LIBCPP_OBJECT_FORMAT_ELF 1 44#elif defined(__MACH__) 45#define _LIBCPP_OBJECT_FORMAT_MACHO 1 46#elif defined(_WIN32) 47#define _LIBCPP_OBJECT_FORMAT_COFF 1 48#elif defined(__wasm__) 49#define _LIBCPP_OBJECT_FORMAT_WASM 1 50#else 51#error Unknown object file format 52#endif 53 54#if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 55// Change short string representation so that string data starts at offset 0, 56// improving its alignment in some cases. 57#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 58// Fix deque iterator type in order to support incomplete types. 59#define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 60// Fix undefined behavior in how std::list stores its linked nodes. 61#define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB 62// Fix undefined behavior in how __tree stores its end and parent nodes. 63#define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB 64// Fix undefined behavior in how __hash_table stores its pointer types. 65#define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB 66#define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB 67#define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE 68// Don't use a nullptr_t simulation type in C++03 instead using C++11 nullptr 69// provided under the alternate keyword __nullptr, which changes the mangling 70// of nullptr_t. This option is ABI incompatible with GCC in C++03 mode. 71#define _LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR 72// Define the `pointer_safety` enum as a C++11 strongly typed enumeration 73// instead of as a class simulating an enum. If this option is enabled 74// `pointer_safety` and `get_pointer_safety()` will no longer be available 75// in C++03. 76#define _LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE 77// Define a key function for `bad_function_call` in the library, to centralize 78// its vtable and typeinfo to libc++ rather than having all other libraries 79// using that class define their own copies. 80#define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 81// Enable optimized version of __do_get_(un)signed which avoids redundant copies. 82#define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET 83// Use the smallest possible integer type to represent the index of the variant. 84// Previously libc++ used "unsigned int" exclusivly. 85#define _LIBCPP_ABI_VARIANT_INDEX_TYPE_OPTIMIZATION 86#elif _LIBCPP_ABI_VERSION == 1 87#if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 88// Enable compiling copies of now inline methods into the dylib to support 89// applications compiled against older libraries. This is unnecessary with 90// COFF dllexport semantics, since dllexport forces a non-inline definition 91// of inline functions to be emitted anyway. Our own non-inline copy would 92// conflict with the dllexport-emitted copy, so we disable it. 93#define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS 94#endif 95// Feature macros for disabling pre ABI v1 features. All of these options 96// are deprecated. 97#if defined(__FreeBSD__) 98#define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR 99#endif 100#endif 101 102#ifdef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 103#error "_LIBCPP_TRIVIAL_PAIR_COPY_CTOR" is no longer supported. \ 104 use _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR instead 105#endif 106 107#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y 108#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) 109 110#define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION) 111 112#if __cplusplus < 201103L 113#define _LIBCPP_CXX03_LANG 114#endif 115 116#ifndef __has_attribute 117#define __has_attribute(__x) 0 118#endif 119#ifndef __has_builtin 120#define __has_builtin(__x) 0 121#endif 122#ifndef __has_extension 123#define __has_extension(__x) 0 124#endif 125#ifndef __has_feature 126#define __has_feature(__x) 0 127#endif 128#ifndef __has_cpp_attribute 129#define __has_cpp_attribute(__x) 0 130#endif 131// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by 132// the compiler and '1' otherwise. 133#ifndef __is_identifier 134#define __is_identifier(__x) 1 135#endif 136#ifndef __has_declspec_attribute 137#define __has_declspec_attribute(__x) 0 138#endif 139 140#define __has_keyword(__x) !(__is_identifier(__x)) 141 142#ifdef __has_include 143#define __libcpp_has_include(__x) __has_include(__x) 144#else 145#define __libcpp_has_include(__x) 0 146#endif 147 148#if defined(__clang__) 149#define _LIBCPP_COMPILER_CLANG 150# ifndef __apple_build_version__ 151# define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__) 152# endif 153#elif defined(__GNUC__) 154#define _LIBCPP_COMPILER_GCC 155#elif defined(_MSC_VER) 156#define _LIBCPP_COMPILER_MSVC 157#elif defined(__IBMCPP__) 158#define _LIBCPP_COMPILER_IBM 159#endif 160 161#ifndef _LIBCPP_CLANG_VER 162#define _LIBCPP_CLANG_VER 0 163#endif 164 165// FIXME: ABI detection should be done via compiler builtin macros. This 166// is just a placeholder until Clang implements such macros. For now assume 167// that Windows compilers pretending to be MSVC++ target the Microsoft ABI, 168// and allow the user to explicitly specify the ABI to handle cases where this 169// heuristic falls short. 170#if defined(_LIBCPP_ABI_FORCE_ITANIUM) && defined(_LIBCPP_ABI_FORCE_MICROSOFT) 171# error "Only one of _LIBCPP_ABI_FORCE_ITANIUM and _LIBCPP_ABI_FORCE_MICROSOFT can be defined" 172#elif defined(_LIBCPP_ABI_FORCE_ITANIUM) 173# define _LIBCPP_ABI_ITANIUM 174#elif defined(_LIBCPP_ABI_FORCE_MICROSOFT) 175# define _LIBCPP_ABI_MICROSOFT 176#else 177# if defined(_WIN32) && defined(_MSC_VER) 178# define _LIBCPP_ABI_MICROSOFT 179# else 180# define _LIBCPP_ABI_ITANIUM 181# endif 182#endif 183 184// Need to detect which libc we're using if we're on Linux. 185#if defined(__linux__) 186#include <features.h> 187#if !defined(__GLIBC_PREREQ) 188#define __GLIBC_PREREQ(a, b) 0 189#endif // !defined(__GLIBC_PREREQ) 190#endif // defined(__linux__) 191 192#ifdef __LITTLE_ENDIAN__ 193#if __LITTLE_ENDIAN__ 194#define _LIBCPP_LITTLE_ENDIAN 195#endif // __LITTLE_ENDIAN__ 196#endif // __LITTLE_ENDIAN__ 197 198#ifdef __BIG_ENDIAN__ 199#if __BIG_ENDIAN__ 200#define _LIBCPP_BIG_ENDIAN 201#endif // __BIG_ENDIAN__ 202#endif // __BIG_ENDIAN__ 203 204#ifdef __BYTE_ORDER__ 205#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 206#define _LIBCPP_LITTLE_ENDIAN 207#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 208#define _LIBCPP_BIG_ENDIAN 209#endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 210#endif // __BYTE_ORDER__ 211 212#ifdef __FreeBSD__ 213# include <sys/endian.h> 214# if _BYTE_ORDER == _LITTLE_ENDIAN 215# define _LIBCPP_LITTLE_ENDIAN 216# else // _BYTE_ORDER == _LITTLE_ENDIAN 217# define _LIBCPP_BIG_ENDIAN 218# endif // _BYTE_ORDER == _LITTLE_ENDIAN 219# ifndef __LONG_LONG_SUPPORTED 220# define _LIBCPP_HAS_NO_LONG_LONG 221# endif // __LONG_LONG_SUPPORTED 222#endif // __FreeBSD__ 223 224#ifdef __NetBSD__ 225# include <sys/endian.h> 226# if _BYTE_ORDER == _LITTLE_ENDIAN 227# define _LIBCPP_LITTLE_ENDIAN 228# else // _BYTE_ORDER == _LITTLE_ENDIAN 229# define _LIBCPP_BIG_ENDIAN 230# endif // _BYTE_ORDER == _LITTLE_ENDIAN 231# define _LIBCPP_HAS_QUICK_EXIT 232#endif // __NetBSD__ 233 234#if defined(_WIN32) 235# define _LIBCPP_WIN32API 236# define _LIBCPP_LITTLE_ENDIAN 237# define _LIBCPP_SHORT_WCHAR 1 238// Both MinGW and native MSVC provide a "MSVC"-like enviroment 239# define _LIBCPP_MSVCRT_LIKE 240// If mingw not explicitly detected, assume using MS C runtime only if 241// a MS compatibility version is specified. 242# if defined(_MSC_VER) && !defined(__MINGW32__) 243# define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 244# endif 245# if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 246# define _LIBCPP_HAS_BITSCAN64 247# endif 248# if defined(_LIBCPP_MSVCRT) 249# define _LIBCPP_HAS_QUICK_EXIT 250# endif 251 252// Some CRT APIs are unavailable to store apps 253#if defined(WINAPI_FAMILY) 254#include <winapifamily.h> 255#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 256 (!defined(WINAPI_PARTITION_SYSTEM) || \ 257 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 258#define _LIBCPP_WINDOWS_STORE_APP 259#endif 260#endif 261#endif // defined(_WIN32) 262 263#ifdef __sun__ 264# include <sys/isa_defs.h> 265# ifdef _LITTLE_ENDIAN 266# define _LIBCPP_LITTLE_ENDIAN 267# else 268# define _LIBCPP_BIG_ENDIAN 269# endif 270#endif // __sun__ 271 272#if defined(__CloudABI__) 273 // Certain architectures provide arc4random(). Prefer using 274 // arc4random() over /dev/{u,}random to make it possible to obtain 275 // random data even when using sandboxing mechanisms such as chroots, 276 // Capsicum, etc. 277# define _LIBCPP_USING_ARC4_RANDOM 278#elif defined(__Fuchsia__) 279# define _LIBCPP_USING_GETENTROPY 280#elif defined(__native_client__) 281 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, 282 // including accesses to the special files under /dev. C++11's 283 // std::random_device is instead exposed through a NaCl syscall. 284# define _LIBCPP_USING_NACL_RANDOM 285#elif defined(_LIBCPP_WIN32API) 286# define _LIBCPP_USING_WIN32_RANDOM 287#else 288# define _LIBCPP_USING_DEV_RANDOM 289#endif 290 291#if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 292# include <endian.h> 293# if __BYTE_ORDER == __LITTLE_ENDIAN 294# define _LIBCPP_LITTLE_ENDIAN 295# elif __BYTE_ORDER == __BIG_ENDIAN 296# define _LIBCPP_BIG_ENDIAN 297# else // __BYTE_ORDER == __BIG_ENDIAN 298# error unable to determine endian 299# endif 300#endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 301 302#if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 303#define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 304#else 305#define _LIBCPP_NO_CFI 306#endif 307 308#if defined(_LIBCPP_COMPILER_CLANG) 309 310// _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for 311// _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility. 312#if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 313 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2)) || \ 314 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 315#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 316#endif 317 318#if __has_feature(cxx_alignas) 319# define _ALIGNAS_TYPE(x) alignas(x) 320# define _ALIGNAS(x) alignas(x) 321#else 322# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 323# define _ALIGNAS(x) __attribute__((__aligned__(x))) 324#endif 325 326#if __cplusplus < 201103L 327typedef __char16_t char16_t; 328typedef __char32_t char32_t; 329#endif 330 331#if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS) 332#define _LIBCPP_NO_EXCEPTIONS 333#endif 334 335#if !(__has_feature(cxx_rtti)) && !defined(_LIBCPP_NO_RTTI) 336#define _LIBCPP_NO_RTTI 337#endif 338 339#if !(__has_feature(cxx_strong_enums)) 340#define _LIBCPP_HAS_NO_STRONG_ENUMS 341#endif 342 343#if !(__has_feature(cxx_decltype)) 344#define _LIBCPP_HAS_NO_DECLTYPE 345#endif 346 347#if __has_feature(cxx_attributes) 348# define _LIBCPP_NORETURN [[noreturn]] 349#else 350# define _LIBCPP_NORETURN __attribute__ ((noreturn)) 351#endif 352 353#if !(__has_feature(cxx_lambdas)) 354#define _LIBCPP_HAS_NO_LAMBDAS 355#endif 356 357#if !(__has_feature(cxx_nullptr)) 358# if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 359# define nullptr __nullptr 360# else 361# define _LIBCPP_HAS_NO_NULLPTR 362# endif 363#endif 364 365#if !(__has_feature(cxx_rvalue_references)) 366#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 367#endif 368 369#if !(__has_feature(cxx_auto_type)) 370#define _LIBCPP_HAS_NO_AUTO_TYPE 371#endif 372 373#if !(__has_feature(cxx_variadic_templates)) 374#define _LIBCPP_HAS_NO_VARIADICS 375#endif 376 377#if !(__has_feature(cxx_generalized_initializers)) 378#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 379#endif 380 381#if __has_feature(is_base_of) 382# define _LIBCPP_HAS_IS_BASE_OF 383#endif 384 385#if __has_feature(is_final) 386# define _LIBCPP_HAS_IS_FINAL 387#endif 388 389// Objective-C++ features (opt-in) 390#if __has_feature(objc_arc) 391#define _LIBCPP_HAS_OBJC_ARC 392#endif 393 394#if __has_feature(objc_arc_weak) 395#define _LIBCPP_HAS_OBJC_ARC_WEAK 396#endif 397 398#if !(__has_feature(cxx_constexpr)) 399#define _LIBCPP_HAS_NO_CONSTEXPR 400#endif 401 402#if !(__has_feature(cxx_relaxed_constexpr)) 403#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 404#endif 405 406#if !(__has_feature(cxx_variable_templates)) 407#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 408#endif 409 410#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 411#if defined(__FreeBSD__) 412#define _LIBCPP_HAS_QUICK_EXIT 413#define _LIBCPP_HAS_C11_FEATURES 414#elif defined(__Fuchsia__) 415#define _LIBCPP_HAS_QUICK_EXIT 416#define _LIBCPP_HAS_C11_FEATURES 417#elif defined(__linux__) 418#if !defined(_LIBCPP_HAS_MUSL_LIBC) 419#if __GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 420#define _LIBCPP_HAS_QUICK_EXIT 421#endif 422#if __GLIBC_PREREQ(2, 17) 423#define _LIBCPP_HAS_C11_FEATURES 424#endif 425#else // defined(_LIBCPP_HAS_MUSL_LIBC) 426#define _LIBCPP_HAS_QUICK_EXIT 427#define _LIBCPP_HAS_C11_FEATURES 428#endif 429#endif // __linux__ 430#endif 431 432#if !(__has_feature(cxx_noexcept)) 433#define _LIBCPP_HAS_NO_NOEXCEPT 434#endif 435 436#if __has_feature(underlying_type) 437# define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 438#endif 439 440#if __has_feature(is_literal) 441# define _LIBCPP_IS_LITERAL(T) __is_literal(T) 442#endif 443 444// Inline namespaces are available in Clang regardless of C++ dialect. 445#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE { 446#define _LIBCPP_END_NAMESPACE_STD } } 447#define _VSTD std::_LIBCPP_NAMESPACE 448 449namespace std { 450 inline namespace _LIBCPP_NAMESPACE { 451 } 452} 453 454#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 455#define _LIBCPP_HAS_NO_ASAN 456#endif 457 458// Allow for build-time disabling of unsigned integer sanitization 459#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 460#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 461#endif 462 463#if __has_builtin(__builtin_launder) 464#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 465#endif 466 467#if !__is_identifier(__has_unique_object_representations) 468#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 469#endif 470 471#elif defined(_LIBCPP_COMPILER_GCC) 472 473#define _ALIGNAS(x) __attribute__((__aligned__(x))) 474#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 475 476#define _LIBCPP_NORETURN __attribute__((noreturn)) 477 478#if _GNUC_VER >= 407 479#define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 480#define _LIBCPP_IS_LITERAL(T) __is_literal_type(T) 481#define _LIBCPP_HAS_IS_FINAL 482#endif 483 484#if defined(__GNUC__) && _GNUC_VER >= 403 485# define _LIBCPP_HAS_IS_BASE_OF 486#endif 487 488#if !__EXCEPTIONS 489#define _LIBCPP_NO_EXCEPTIONS 490#endif 491 492// constexpr was added to GCC in 4.6. 493#if _GNUC_VER < 406 494#define _LIBCPP_HAS_NO_CONSTEXPR 495// Can only use constexpr in c++11 mode. 496#elif !defined(__GXX_EXPERIMENTAL_CXX0X__) && __cplusplus < 201103L 497#define _LIBCPP_HAS_NO_CONSTEXPR 498#endif 499 500// Determine if GCC supports relaxed constexpr 501#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 502#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 503#endif 504 505// GCC 5 will support variable templates 506#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 507#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 508#endif 509 510#ifndef __GXX_EXPERIMENTAL_CXX0X__ 511#define _LIBCPP_HAS_NO_DECLTYPE 512#define _LIBCPP_HAS_NO_NULLPTR 513#define _LIBCPP_HAS_NO_UNICODE_CHARS 514#define _LIBCPP_HAS_NO_VARIADICS 515#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 516#define _LIBCPP_HAS_NO_STRONG_ENUMS 517#define _LIBCPP_HAS_NO_NOEXCEPT 518 519#else // __GXX_EXPERIMENTAL_CXX0X__ 520 521#if _GNUC_VER < 403 522#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 523#endif 524 525 526#if _GNUC_VER < 404 527#define _LIBCPP_HAS_NO_DECLTYPE 528#define _LIBCPP_HAS_NO_UNICODE_CHARS 529#define _LIBCPP_HAS_NO_VARIADICS 530#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 531#endif // _GNUC_VER < 404 532 533#if _GNUC_VER < 406 534#define _LIBCPP_HAS_NO_NOEXCEPT 535#define _LIBCPP_HAS_NO_NULLPTR 536#endif 537 538#endif // __GXX_EXPERIMENTAL_CXX0X__ 539 540#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_NAMESPACE { 541#define _LIBCPP_END_NAMESPACE_STD } } 542#define _VSTD std::_LIBCPP_NAMESPACE 543 544namespace std { 545 inline namespace _LIBCPP_NAMESPACE { 546 } 547} 548 549#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 550#define _LIBCPP_HAS_NO_ASAN 551#endif 552 553#if _GNUC_VER >= 700 554#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 555#endif 556 557#if _GNUC_VER >= 700 558#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 559#endif 560 561#elif defined(_LIBCPP_COMPILER_MSVC) 562 563#define _LIBCPP_TOSTRING2(x) #x 564#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 565#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 566 567#if _MSC_VER < 1900 568#error "MSVC versions prior to Visual Studio 2015 are not supported" 569#endif 570 571#define _LIBCPP_HAS_IS_BASE_OF 572#define _LIBCPP_HAS_NO_CONSTEXPR 573#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 574#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 575#if _MSC_VER <= 1800 576#define _LIBCPP_HAS_NO_UNICODE_CHARS 577#endif 578#define _LIBCPP_HAS_NO_NOEXCEPT 579#define __alignof__ __alignof 580#define _LIBCPP_NORETURN __declspec(noreturn) 581#define _ALIGNAS(x) __declspec(align(x)) 582#define _LIBCPP_HAS_NO_VARIADICS 583 584#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { 585#define _LIBCPP_END_NAMESPACE_STD } 586#define _VSTD std 587 588# define _LIBCPP_WEAK 589namespace std { 590} 591 592#define _LIBCPP_HAS_NO_ASAN 593 594#elif defined(_LIBCPP_COMPILER_IBM) 595 596#define _ALIGNAS(x) __attribute__((__aligned__(x))) 597#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 598#define _ATTRIBUTE(x) __attribute__((x)) 599#define _LIBCPP_NORETURN __attribute__((noreturn)) 600 601#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 602#define _LIBCPP_HAS_NO_NOEXCEPT 603#define _LIBCPP_HAS_NO_NULLPTR 604#define _LIBCPP_HAS_NO_UNICODE_CHARS 605#define _LIBCPP_HAS_IS_BASE_OF 606#define _LIBCPP_HAS_IS_FINAL 607#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 608 609#if defined(_AIX) 610#define __MULTILOCALE_API 611#endif 612 613#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE { 614#define _LIBCPP_END_NAMESPACE_STD } } 615#define _VSTD std::_LIBCPP_NAMESPACE 616 617namespace std { 618 inline namespace _LIBCPP_NAMESPACE { 619 } 620} 621 622#define _LIBCPP_HAS_NO_ASAN 623 624#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 625 626#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 627#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 628# define _LIBCPP_DLL_VIS 629# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 630# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 631# define _LIBCPP_OVERRIDABLE_FUNC_VIS 632#elif defined(_LIBCPP_BUILDING_LIBRARY) 633# define _LIBCPP_DLL_VIS __declspec(dllexport) 634# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 635# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 636# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 637#else 638# define _LIBCPP_DLL_VIS __declspec(dllimport) 639# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 640# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 641# define _LIBCPP_OVERRIDABLE_FUNC_VIS 642#endif 643 644#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 645#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 646#define _LIBCPP_EXTERN_VIS _LIBCPP_DLL_VIS 647#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 648#define _LIBCPP_HIDDEN 649#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 650#define _LIBCPP_TEMPLATE_VIS 651#define _LIBCPP_ENUM_VIS 652 653#if defined(_LIBCPP_COMPILER_MSVC) 654# define _LIBCPP_INLINE_VISIBILITY __forceinline 655# define _LIBCPP_ALWAYS_INLINE __forceinline 656# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __forceinline 657#else 658# define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 659# define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 660# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 661#endif 662#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 663 664#ifndef _LIBCPP_HIDDEN 665#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 666#define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 667#else 668#define _LIBCPP_HIDDEN 669#endif 670#endif 671 672#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 673#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 674// The inline should be removed once PR32114 is resolved 675#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 676#else 677#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 678#endif 679#endif 680 681#ifndef _LIBCPP_FUNC_VIS 682#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 683#define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 684#else 685#define _LIBCPP_FUNC_VIS 686#endif 687#endif 688 689#ifndef _LIBCPP_TYPE_VIS 690# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 691# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 692# else 693# define _LIBCPP_TYPE_VIS 694# endif 695#endif 696 697#ifndef _LIBCPP_TEMPLATE_VIS 698# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 699# if __has_attribute(__type_visibility__) 700# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 701# else 702# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 703# endif 704# else 705# define _LIBCPP_TEMPLATE_VIS 706# endif 707#endif 708 709#ifndef _LIBCPP_EXTERN_VIS 710# define _LIBCPP_EXTERN_VIS 711#endif 712 713#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 714# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 715#endif 716 717#ifndef _LIBCPP_EXCEPTION_ABI 718#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 719#define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 720#else 721#define _LIBCPP_EXCEPTION_ABI 722#endif 723#endif 724 725#ifndef _LIBCPP_ENUM_VIS 726# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 727# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 728# else 729# define _LIBCPP_ENUM_VIS 730# endif 731#endif 732 733#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 734# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 735# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 736# else 737# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 738# endif 739#endif 740 741#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 742# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 743#endif 744 745#ifndef _LIBCPP_INLINE_VISIBILITY 746#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 747#define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__)) 748#else 749#define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 750#endif 751#endif 752 753#ifndef _LIBCPP_ALWAYS_INLINE 754#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 755#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__visibility__("hidden"), __always_inline__)) 756#else 757#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 758#endif 759#endif 760 761#ifndef _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 762# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 763# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__visibility__("default"), __always_inline__)) 764# else 765# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__always_inline__)) 766# endif 767#endif 768 769#ifndef _LIBCPP_PREFERRED_OVERLOAD 770# if __has_attribute(__enable_if__) 771# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 772# endif 773#endif 774 775#ifndef _LIBCPP_HAS_NO_NOEXCEPT 776# define _NOEXCEPT noexcept 777# define _NOEXCEPT_(x) noexcept(x) 778#else 779# define _NOEXCEPT throw() 780# define _NOEXCEPT_(x) 781#endif 782 783#if defined(_LIBCPP_DEBUG_USE_EXCEPTIONS) 784# if !defined(_LIBCPP_DEBUG) 785# error cannot use _LIBCPP_DEBUG_USE_EXCEPTIONS unless _LIBCPP_DEBUG is defined 786# endif 787# define _NOEXCEPT_DEBUG noexcept(false) 788# define _NOEXCEPT_DEBUG_(x) noexcept(false) 789#else 790# define _NOEXCEPT_DEBUG _NOEXCEPT 791# define _NOEXCEPT_DEBUG_(x) _NOEXCEPT_(x) 792#endif 793 794#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 795typedef unsigned short char16_t; 796typedef unsigned int char32_t; 797#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 798 799#ifndef __SIZEOF_INT128__ 800#define _LIBCPP_HAS_NO_INT128 801#endif 802 803#ifdef _LIBCPP_CXX03_LANG 804# if __has_extension(c_static_assert) 805# define static_assert(__b, __m) _Static_assert(__b, __m) 806# else 807extern "C++" { 808template <bool> struct __static_assert_test; 809template <> struct __static_assert_test<true> {}; 810template <unsigned> struct __static_assert_check {}; 811} 812#define static_assert(__b, __m) \ 813 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \ 814 _LIBCPP_CONCAT(__t, __LINE__) 815# endif // __has_extension(c_static_assert) 816#endif // _LIBCPP_CXX03_LANG 817 818#ifdef _LIBCPP_HAS_NO_DECLTYPE 819// GCC 4.6 provides __decltype in all standard modes. 820#if __has_keyword(__decltype) || _LIBCPP_CLANG_VER >= 304 || _GNUC_VER >= 406 821# define decltype(__x) __decltype(__x) 822#else 823# define decltype(__x) __typeof__(__x) 824#endif 825#endif 826 827#ifdef _LIBCPP_HAS_NO_CONSTEXPR 828#define _LIBCPP_CONSTEXPR 829#else 830#define _LIBCPP_CONSTEXPR constexpr 831#endif 832 833#ifdef _LIBCPP_CXX03_LANG 834#define _LIBCPP_DEFAULT {} 835#else 836#define _LIBCPP_DEFAULT = default; 837#endif 838 839#ifdef _LIBCPP_CXX03_LANG 840#define _LIBCPP_EQUAL_DELETE 841#else 842#define _LIBCPP_EQUAL_DELETE = delete 843#endif 844 845#ifdef __GNUC__ 846#define _NOALIAS __attribute__((__malloc__)) 847#else 848#define _NOALIAS 849#endif 850 851#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 852 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 853# define _LIBCPP_EXPLICIT explicit 854#else 855# define _LIBCPP_EXPLICIT 856#endif 857 858#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 859# define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 860#endif 861 862#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 863#define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 864#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 865 __lx __v_; \ 866 _LIBCPP_ALWAYS_INLINE x(__lx __v) : __v_(__v) {} \ 867 _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 868 _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \ 869 }; 870#else // _LIBCPP_HAS_NO_STRONG_ENUMS 871#define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 872#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 873#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 874 875#ifdef _LIBCPP_DEBUG 876# if _LIBCPP_DEBUG == 0 877# define _LIBCPP_DEBUG_LEVEL 1 878# elif _LIBCPP_DEBUG == 1 879# define _LIBCPP_DEBUG_LEVEL 2 880# else 881# error Supported values for _LIBCPP_DEBUG are 0 and 1 882# endif 883# if !defined(_LIBCPP_BUILDING_LIBRARY) 884# define _LIBCPP_EXTERN_TEMPLATE(...) 885# endif 886#endif 887 888#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 889#define _LIBCPP_EXTERN_TEMPLATE(...) 890#define _LIBCPP_EXTERN_TEMPLATE2(...) 891#endif 892 893#ifndef _LIBCPP_EXTERN_TEMPLATE 894#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 895#endif 896 897#ifndef _LIBCPP_EXTERN_TEMPLATE2 898#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 899#endif 900 901#if defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__) 902#define _LIBCPP_NONUNIQUE_RTTI_BIT (1ULL << 63) 903#endif 904 905#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 906 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 907#define _LIBCPP_LOCALE__L_EXTENSIONS 1 908#endif 909 910#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 911// Most unix variants have catopen. These are the specific ones that don't. 912#if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 913#define _LIBCPP_HAS_CATOPEN 1 914#endif 915#endif 916 917#ifdef __FreeBSD__ 918#define _DECLARE_C99_LDBL_MATH 1 919#endif 920 921#if defined(__APPLE__) 922# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 923 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 924# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 925# endif 926# if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) 927# if __MAC_OS_X_VERSION_MIN_REQUIRED < 1060 928# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 929# endif 930# endif 931#endif // defined(__APPLE__) 932 933#if defined(__APPLE__) || defined(__FreeBSD__) 934#define _LIBCPP_HAS_DEFAULTRUNELOCALE 935#endif 936 937#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 938#define _LIBCPP_WCTYPE_IS_MASK 939#endif 940 941#ifndef _LIBCPP_STD_VER 942# if __cplusplus <= 201103L 943# define _LIBCPP_STD_VER 11 944# elif __cplusplus <= 201402L 945# define _LIBCPP_STD_VER 14 946# elif __cplusplus <= 201703L 947# define _LIBCPP_STD_VER 17 948# else 949# define _LIBCPP_STD_VER 18 // current year, or date of c++2a ratification 950# endif 951#endif // _LIBCPP_STD_VER 952 953#if _LIBCPP_STD_VER > 11 954#define _LIBCPP_DEPRECATED [[deprecated]] 955#else 956#define _LIBCPP_DEPRECATED 957#endif 958 959#if _LIBCPP_STD_VER <= 11 960#define _LIBCPP_EXPLICIT_AFTER_CXX11 961#define _LIBCPP_DEPRECATED_AFTER_CXX11 962#else 963#define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 964#define _LIBCPP_DEPRECATED_AFTER_CXX11 [[deprecated]] 965#endif 966 967#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 968#define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 969#else 970#define _LIBCPP_CONSTEXPR_AFTER_CXX11 971#endif 972 973#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 974#define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 975#else 976#define _LIBCPP_CONSTEXPR_AFTER_CXX14 977#endif 978 979#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 980#define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 981#else 982#define _LIBCPP_CONSTEXPR_AFTER_CXX17 983#endif 984 985#if __has_cpp_attribute(nodiscard) && _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) 986#define _LIBCPP_NODISCARD_AFTER_CXX17 [[nodiscard]] 987#else 988#define _LIBCPP_NODISCARD_AFTER_CXX17 989#endif 990 991#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 992# define _LIBCPP_INLINE_VAR inline 993#else 994# define _LIBCPP_INLINE_VAR 995#endif 996 997#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 998# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 999#else 1000# define _LIBCPP_EXPLICIT_MOVE(x) (x) 1001#endif 1002 1003#ifndef _LIBCPP_HAS_NO_ASAN 1004_LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 1005 const void *, const void *, const void *, const void *); 1006#endif 1007 1008// Try to find out if RTTI is disabled. 1009// g++ and cl.exe have RTTI on by default and define a macro when it is. 1010// g++ only defines the macro in 4.3.2 and onwards. 1011#if !defined(_LIBCPP_NO_RTTI) 1012# if defined(__GNUC__) && ((__GNUC__ >= 5) || (__GNUC__ == 4 && \ 1013 (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && !defined(__GXX_RTTI) 1014# define _LIBCPP_NO_RTTI 1015# elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1016# define _LIBCPP_NO_RTTI 1017# endif 1018#endif 1019 1020#ifndef _LIBCPP_WEAK 1021# define _LIBCPP_WEAK __attribute__((__weak__)) 1022#endif 1023 1024// Thread API 1025#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1026 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1027 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1028 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1029# if defined(__FreeBSD__) || \ 1030 defined(__Fuchsia__) || \ 1031 defined(__NetBSD__) || \ 1032 defined(__linux__) || \ 1033 defined(__APPLE__) || \ 1034 defined(__CloudABI__) || \ 1035 defined(__sun__) || \ 1036 (defined(__MINGW32__) && __libcpp_has_include(<pthread.h>)) 1037# define _LIBCPP_HAS_THREAD_API_PTHREAD 1038# elif defined(_LIBCPP_WIN32API) 1039# define _LIBCPP_HAS_THREAD_API_WIN32 1040# else 1041# error "No thread API" 1042# endif // _LIBCPP_HAS_THREAD_API 1043#endif // _LIBCPP_HAS_NO_THREADS 1044 1045#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1046# error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1047 _LIBCPP_HAS_NO_THREADS is not defined. 1048#endif 1049 1050#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1051# error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1052 _LIBCPP_HAS_NO_THREADS is defined. 1053#endif 1054 1055#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1056# error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1057 _LIBCPP_HAS_NO_THREADS is defined. 1058#endif 1059 1060// Systems that use capability-based security (FreeBSD with Capsicum, 1061// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1062// Functions like open(), rename(), unlink() and stat() should not be 1063// used, as they attempt to access the global filesystem namespace. 1064#ifdef __CloudABI__ 1065#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1066#endif 1067 1068// CloudABI is intended for running networked services. Processes do not 1069// have standard input and output channels. 1070#ifdef __CloudABI__ 1071#define _LIBCPP_HAS_NO_STDIN 1072#define _LIBCPP_HAS_NO_STDOUT 1073#endif 1074 1075#if defined(__BIONIC__) || defined(__CloudABI__) || \ 1076 defined(__Fuchsia__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1077#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1078#endif 1079 1080// Thread-unsafe functions such as strtok() and localtime() 1081// are not available. 1082#ifdef __CloudABI__ 1083#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1084#endif 1085 1086#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1087#define _LIBCPP_HAS_C_ATOMIC_IMP 1088#elif _GNUC_VER > 407 1089#define _LIBCPP_HAS_GCC_ATOMIC_IMP 1090#endif 1091 1092#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \ 1093 || defined(_LIBCPP_HAS_NO_THREADS) 1094#define _LIBCPP_HAS_NO_ATOMIC_HEADER 1095#endif 1096 1097#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1098#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1099#endif 1100 1101#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1102#if defined(__clang__) && __has_attribute(acquire_capability) 1103// Work around the attribute handling in clang. When both __declspec and 1104// __attribute__ are present, the processing goes awry preventing the definition 1105// of the types. 1106#if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1107#define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1108#endif 1109#endif 1110#endif 1111 1112#if __has_attribute(require_constant_initialization) 1113#define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1114#else 1115#define _LIBCPP_SAFE_STATIC 1116#endif 1117 1118#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1119# define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1120#endif 1121 1122#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1123#if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1124#define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1125#endif 1126#endif 1127 1128#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1129# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1130 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1131# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1132 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1133#else 1134# define _LIBCPP_DIAGNOSE_WARNING(...) 1135# define _LIBCPP_DIAGNOSE_ERROR(...) 1136#endif 1137 1138#if __has_attribute(fallthough) || _GNUC_VER >= 700 1139// Use a function like macro to imply that it must be followed by a semicolon 1140#define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1141#else 1142#define _LIBCPP_FALLTHROUGH() ((void)0) 1143#endif 1144 1145#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1146 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1147# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1148#else 1149# define _LIBCPP_DECLSPEC_EMPTY_BASES 1150#endif 1151 1152#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1153# define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1154# define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1155# define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1156# define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1157#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1158 1159#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1160# define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1161#endif 1162 1163#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1164# define _LIBCPP_HAS_NO_IS_AGGREGATE 1165#endif 1166 1167#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1168# define _LIBCPP_HAS_NO_COROUTINES 1169#endif 1170 1171// Decide whether to use availability macros. 1172#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1173 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1174 __has_feature(attribute_availability_with_strict) && \ 1175 __has_feature(attribute_availability_in_templates) 1176#ifdef __APPLE__ 1177#define _LIBCPP_USE_AVAILABILITY_APPLE 1178#endif 1179#endif 1180 1181// Define availability macros. 1182#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1183#define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1184 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1185 __attribute__((availability(ios,strict,introduced=10.0))) \ 1186 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1187 __attribute__((availability(watchos,strict,introduced=3.0))) 1188#define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS __attribute__((unavailable)) 1189#define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH __attribute__((unavailable)) 1190#define _LIBCPP_AVAILABILITY_BAD_ANY_CAST __attribute__((unavailable)) 1191#define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1192 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1193 __attribute__((availability(ios,strict,introduced=10.0))) \ 1194 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1195 __attribute__((availability(watchos,strict,introduced=3.0))) 1196#define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1197 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1198 __attribute__((availability(ios,strict,introduced=10.0))) \ 1199 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1200 __attribute__((availability(watchos,strict,introduced=3.0))) 1201#define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1202 __attribute__((availability(ios,strict,introduced=6.0))) 1203#define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1204 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1205 __attribute__((availability(ios,strict,introduced=7.0))) 1206#define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1207 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1208 __attribute__((availability(ios,strict,introduced=7.0))) 1209#define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1210 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1211 __attribute__((availability(ios,strict,introduced=7.0))) 1212#else 1213#define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1214#define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1215#define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1216#define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1217#define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1218#define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1219#define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1220#define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1221#define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1222#define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1223#endif 1224 1225// Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1226#ifdef _LIBCPP_NO_EXCEPTIONS 1227#define _LIBCPP_AVAILABILITY_DYNARRAY 1228#define _LIBCPP_AVAILABILITY_FUTURE 1229#define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1230#else 1231#define _LIBCPP_AVAILABILITY_DYNARRAY _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1232#define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1233#define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST \ 1234 _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1235#endif 1236 1237// Availability of stream API in the dylib got dropped and re-added. The 1238// extern template should effectively be available at: 1239// availability(macosx,introduced=10.9) 1240// availability(ios,introduced=7.0) 1241#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) && \ 1242 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1243 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1244 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1245 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1246#define _LIBCPP_AVAILABILITY_NO_STREAMS_EXTERN_TEMPLATE 1247#endif 1248 1249#if defined(_LIBCPP_COMPILER_IBM) 1250#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1251#endif 1252 1253#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1254# define _LIBCPP_PUSH_MACROS 1255# define _LIBCPP_POP_MACROS 1256#else 1257 // Don't warn about macro conflicts when we can restore them at the 1258 // end of the header. 1259# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1260# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1261# endif 1262# if defined(_LIBCPP_COMPILER_MSVC) 1263# define _LIBCPP_PUSH_MACROS \ 1264 __pragma(push_macro("min")) \ 1265 __pragma(push_macro("max")) 1266# define _LIBCPP_POP_MACROS \ 1267 __pragma(pop_macro("min")) \ 1268 __pragma(pop_macro("max")) 1269# else 1270# define _LIBCPP_PUSH_MACROS \ 1271 _Pragma("push_macro(\"min\")") \ 1272 _Pragma("push_macro(\"max\")") 1273# define _LIBCPP_POP_MACROS \ 1274 _Pragma("pop_macro(\"min\")") \ 1275 _Pragma("pop_macro(\"max\")") 1276# endif 1277#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1278 1279#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1280# if defined(_DLL) 1281# pragma(lib, "c++.lib") 1282# else 1283# pragma(lib, "libc++.lib") 1284# endif 1285#endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1286 1287#endif // __cplusplus 1288 1289#endif // _LIBCPP_CONFIG 1290