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#elif defined(_LIBCPP_COMPILER_GCC) 468 469#define _ALIGNAS(x) __attribute__((__aligned__(x))) 470#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 471 472#define _LIBCPP_NORETURN __attribute__((noreturn)) 473 474#if _GNUC_VER >= 407 475#define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 476#define _LIBCPP_IS_LITERAL(T) __is_literal_type(T) 477#define _LIBCPP_HAS_IS_FINAL 478#endif 479 480#if defined(__GNUC__) && _GNUC_VER >= 403 481# define _LIBCPP_HAS_IS_BASE_OF 482#endif 483 484#if !__EXCEPTIONS 485#define _LIBCPP_NO_EXCEPTIONS 486#endif 487 488// constexpr was added to GCC in 4.6. 489#if _GNUC_VER < 406 490#define _LIBCPP_HAS_NO_CONSTEXPR 491// Can only use constexpr in c++11 mode. 492#elif !defined(__GXX_EXPERIMENTAL_CXX0X__) && __cplusplus < 201103L 493#define _LIBCPP_HAS_NO_CONSTEXPR 494#endif 495 496// Determine if GCC supports relaxed constexpr 497#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 498#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 499#endif 500 501// GCC 5 will support variable templates 502#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 503#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 504#endif 505 506#ifndef __GXX_EXPERIMENTAL_CXX0X__ 507#define _LIBCPP_HAS_NO_DECLTYPE 508#define _LIBCPP_HAS_NO_NULLPTR 509#define _LIBCPP_HAS_NO_UNICODE_CHARS 510#define _LIBCPP_HAS_NO_VARIADICS 511#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 512#define _LIBCPP_HAS_NO_STRONG_ENUMS 513#define _LIBCPP_HAS_NO_NOEXCEPT 514 515#else // __GXX_EXPERIMENTAL_CXX0X__ 516 517#if _GNUC_VER < 403 518#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 519#endif 520 521 522#if _GNUC_VER < 404 523#define _LIBCPP_HAS_NO_DECLTYPE 524#define _LIBCPP_HAS_NO_UNICODE_CHARS 525#define _LIBCPP_HAS_NO_VARIADICS 526#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 527#endif // _GNUC_VER < 404 528 529#if _GNUC_VER < 406 530#define _LIBCPP_HAS_NO_NOEXCEPT 531#define _LIBCPP_HAS_NO_NULLPTR 532#endif 533 534#endif // __GXX_EXPERIMENTAL_CXX0X__ 535 536#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_NAMESPACE { 537#define _LIBCPP_END_NAMESPACE_STD } } 538#define _VSTD std::_LIBCPP_NAMESPACE 539 540namespace std { 541 inline namespace _LIBCPP_NAMESPACE { 542 } 543} 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#endif 552 553#elif defined(_LIBCPP_COMPILER_MSVC) 554 555#define _LIBCPP_TOSTRING2(x) #x 556#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 557#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 558 559#if _MSC_VER < 1900 560#error "MSVC versions prior to Visual Studio 2015 are not supported" 561#endif 562 563#define _LIBCPP_HAS_IS_BASE_OF 564#define _LIBCPP_HAS_NO_CONSTEXPR 565#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 566#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 567#if _MSC_VER <= 1800 568#define _LIBCPP_HAS_NO_UNICODE_CHARS 569#endif 570#define _LIBCPP_HAS_NO_NOEXCEPT 571#define __alignof__ __alignof 572#define _LIBCPP_NORETURN __declspec(noreturn) 573#define _ALIGNAS(x) __declspec(align(x)) 574#define _LIBCPP_HAS_NO_VARIADICS 575 576#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { 577#define _LIBCPP_END_NAMESPACE_STD } 578#define _VSTD std 579 580# define _LIBCPP_WEAK 581namespace std { 582} 583 584#define _LIBCPP_HAS_NO_ASAN 585 586#elif defined(_LIBCPP_COMPILER_IBM) 587 588#define _ALIGNAS(x) __attribute__((__aligned__(x))) 589#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 590#define _ATTRIBUTE(x) __attribute__((x)) 591#define _LIBCPP_NORETURN __attribute__((noreturn)) 592 593#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 594#define _LIBCPP_HAS_NO_NOEXCEPT 595#define _LIBCPP_HAS_NO_NULLPTR 596#define _LIBCPP_HAS_NO_UNICODE_CHARS 597#define _LIBCPP_HAS_IS_BASE_OF 598#define _LIBCPP_HAS_IS_FINAL 599#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 600 601#if defined(_AIX) 602#define __MULTILOCALE_API 603#endif 604 605#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE { 606#define _LIBCPP_END_NAMESPACE_STD } } 607#define _VSTD std::_LIBCPP_NAMESPACE 608 609namespace std { 610 inline namespace _LIBCPP_NAMESPACE { 611 } 612} 613 614#define _LIBCPP_HAS_NO_ASAN 615 616#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 617 618#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 619#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 620# define _LIBCPP_DLL_VIS 621# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 622# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 623# define _LIBCPP_OVERRIDABLE_FUNC_VIS 624#elif defined(_LIBCPP_BUILDING_LIBRARY) 625# define _LIBCPP_DLL_VIS __declspec(dllexport) 626# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 627# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 628# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 629#else 630# define _LIBCPP_DLL_VIS __declspec(dllimport) 631# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 632# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 633# define _LIBCPP_OVERRIDABLE_FUNC_VIS 634#endif 635 636#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 637#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 638#define _LIBCPP_EXTERN_VIS _LIBCPP_DLL_VIS 639#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 640#define _LIBCPP_HIDDEN 641#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 642#define _LIBCPP_TEMPLATE_VIS 643#define _LIBCPP_ENUM_VIS 644 645#if defined(_LIBCPP_COMPILER_MSVC) 646# define _LIBCPP_INLINE_VISIBILITY __forceinline 647# define _LIBCPP_ALWAYS_INLINE __forceinline 648# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __forceinline 649#else 650# define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 651# define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 652# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 653#endif 654#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 655 656#ifndef _LIBCPP_HIDDEN 657#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 658#define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 659#else 660#define _LIBCPP_HIDDEN 661#endif 662#endif 663 664#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 665#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 666// The inline should be removed once PR32114 is resolved 667#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 668#else 669#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 670#endif 671#endif 672 673#ifndef _LIBCPP_FUNC_VIS 674#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 675#define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 676#else 677#define _LIBCPP_FUNC_VIS 678#endif 679#endif 680 681#ifndef _LIBCPP_TYPE_VIS 682# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 683# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 684# else 685# define _LIBCPP_TYPE_VIS 686# endif 687#endif 688 689#ifndef _LIBCPP_TEMPLATE_VIS 690# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 691# if __has_attribute(__type_visibility__) 692# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 693# else 694# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 695# endif 696# else 697# define _LIBCPP_TEMPLATE_VIS 698# endif 699#endif 700 701#ifndef _LIBCPP_EXTERN_VIS 702# define _LIBCPP_EXTERN_VIS 703#endif 704 705#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 706# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 707#endif 708 709#ifndef _LIBCPP_EXCEPTION_ABI 710#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 711#define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 712#else 713#define _LIBCPP_EXCEPTION_ABI 714#endif 715#endif 716 717#ifndef _LIBCPP_ENUM_VIS 718# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 719# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 720# else 721# define _LIBCPP_ENUM_VIS 722# endif 723#endif 724 725#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 726# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 727# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 728# else 729# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 730# endif 731#endif 732 733#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 734# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 735#endif 736 737#ifndef _LIBCPP_INLINE_VISIBILITY 738#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 739#define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__)) 740#else 741#define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 742#endif 743#endif 744 745#ifndef _LIBCPP_ALWAYS_INLINE 746#if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 747#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__visibility__("hidden"), __always_inline__)) 748#else 749#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 750#endif 751#endif 752 753#ifndef _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 754# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 755# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__visibility__("default"), __always_inline__)) 756# else 757# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__always_inline__)) 758# endif 759#endif 760 761#ifndef _LIBCPP_PREFERRED_OVERLOAD 762# if __has_attribute(__enable_if__) 763# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 764# endif 765#endif 766 767#ifndef _LIBCPP_HAS_NO_NOEXCEPT 768# define _NOEXCEPT noexcept 769# define _NOEXCEPT_(x) noexcept(x) 770#else 771# define _NOEXCEPT throw() 772# define _NOEXCEPT_(x) 773#endif 774 775#if defined(_LIBCPP_DEBUG_USE_EXCEPTIONS) 776# if !defined(_LIBCPP_DEBUG) 777# error cannot use _LIBCPP_DEBUG_USE_EXCEPTIONS unless _LIBCPP_DEBUG is defined 778# endif 779# define _NOEXCEPT_DEBUG noexcept(false) 780# define _NOEXCEPT_DEBUG_(x) noexcept(false) 781#else 782# define _NOEXCEPT_DEBUG _NOEXCEPT 783# define _NOEXCEPT_DEBUG_(x) _NOEXCEPT_(x) 784#endif 785 786#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 787typedef unsigned short char16_t; 788typedef unsigned int char32_t; 789#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 790 791#ifndef __SIZEOF_INT128__ 792#define _LIBCPP_HAS_NO_INT128 793#endif 794 795#ifdef _LIBCPP_CXX03_LANG 796# if __has_extension(c_static_assert) 797# define static_assert(__b, __m) _Static_assert(__b, __m) 798# else 799extern "C++" { 800template <bool> struct __static_assert_test; 801template <> struct __static_assert_test<true> {}; 802template <unsigned> struct __static_assert_check {}; 803} 804#define static_assert(__b, __m) \ 805 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \ 806 _LIBCPP_CONCAT(__t, __LINE__) 807# endif // __has_extension(c_static_assert) 808#endif // _LIBCPP_CXX03_LANG 809 810#ifdef _LIBCPP_HAS_NO_DECLTYPE 811// GCC 4.6 provides __decltype in all standard modes. 812#if __has_keyword(__decltype) || _LIBCPP_CLANG_VER >= 304 || _GNUC_VER >= 406 813# define decltype(__x) __decltype(__x) 814#else 815# define decltype(__x) __typeof__(__x) 816#endif 817#endif 818 819#ifdef _LIBCPP_HAS_NO_CONSTEXPR 820#define _LIBCPP_CONSTEXPR 821#else 822#define _LIBCPP_CONSTEXPR constexpr 823#endif 824 825#ifdef _LIBCPP_CXX03_LANG 826#define _LIBCPP_DEFAULT {} 827#else 828#define _LIBCPP_DEFAULT = default; 829#endif 830 831#ifdef _LIBCPP_CXX03_LANG 832#define _LIBCPP_EQUAL_DELETE 833#else 834#define _LIBCPP_EQUAL_DELETE = delete 835#endif 836 837#ifdef __GNUC__ 838#define _NOALIAS __attribute__((__malloc__)) 839#else 840#define _NOALIAS 841#endif 842 843#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 844 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 845# define _LIBCPP_EXPLICIT explicit 846#else 847# define _LIBCPP_EXPLICIT 848#endif 849 850#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 851# define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 852#endif 853 854#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 855#define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 856#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 857 __lx __v_; \ 858 _LIBCPP_ALWAYS_INLINE x(__lx __v) : __v_(__v) {} \ 859 _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 860 _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \ 861 }; 862#else // _LIBCPP_HAS_NO_STRONG_ENUMS 863#define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 864#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 865#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 866 867#ifdef _LIBCPP_DEBUG 868# if _LIBCPP_DEBUG == 0 869# define _LIBCPP_DEBUG_LEVEL 1 870# elif _LIBCPP_DEBUG == 1 871# define _LIBCPP_DEBUG_LEVEL 2 872# else 873# error Supported values for _LIBCPP_DEBUG are 0 and 1 874# endif 875# if !defined(_LIBCPP_BUILDING_LIBRARY) 876# define _LIBCPP_EXTERN_TEMPLATE(...) 877# endif 878#endif 879 880#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 881#define _LIBCPP_EXTERN_TEMPLATE(...) 882#define _LIBCPP_EXTERN_TEMPLATE2(...) 883#endif 884 885#ifndef _LIBCPP_EXTERN_TEMPLATE 886#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 887#endif 888 889#ifndef _LIBCPP_EXTERN_TEMPLATE2 890#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 891#endif 892 893#if defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__) 894#define _LIBCPP_NONUNIQUE_RTTI_BIT (1ULL << 63) 895#endif 896 897#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 898 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 899#define _LIBCPP_LOCALE__L_EXTENSIONS 1 900#endif 901 902#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 903// Most unix variants have catopen. These are the specific ones that don't. 904#if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 905#define _LIBCPP_HAS_CATOPEN 1 906#endif 907#endif 908 909#ifdef __FreeBSD__ 910#define _DECLARE_C99_LDBL_MATH 1 911#endif 912 913#if defined(__APPLE__) 914# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 915 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 916# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 917# endif 918# if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) 919# if __MAC_OS_X_VERSION_MIN_REQUIRED < 1060 920# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 921# endif 922# endif 923#endif // defined(__APPLE__) 924 925#if defined(__APPLE__) || defined(__FreeBSD__) 926#define _LIBCPP_HAS_DEFAULTRUNELOCALE 927#endif 928 929#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 930#define _LIBCPP_WCTYPE_IS_MASK 931#endif 932 933#ifndef _LIBCPP_STD_VER 934# if __cplusplus <= 201103L 935# define _LIBCPP_STD_VER 11 936# elif __cplusplus <= 201402L 937# define _LIBCPP_STD_VER 14 938# elif __cplusplus <= 201703L 939# define _LIBCPP_STD_VER 17 940# else 941# define _LIBCPP_STD_VER 18 // current year, or date of c++2a ratification 942# endif 943#endif // _LIBCPP_STD_VER 944 945#if _LIBCPP_STD_VER > 11 946#define _LIBCPP_DEPRECATED [[deprecated]] 947#else 948#define _LIBCPP_DEPRECATED 949#endif 950 951#if _LIBCPP_STD_VER <= 11 952#define _LIBCPP_EXPLICIT_AFTER_CXX11 953#define _LIBCPP_DEPRECATED_AFTER_CXX11 954#else 955#define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 956#define _LIBCPP_DEPRECATED_AFTER_CXX11 [[deprecated]] 957#endif 958 959#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 960#define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 961#else 962#define _LIBCPP_CONSTEXPR_AFTER_CXX11 963#endif 964 965#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 966#define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 967#else 968#define _LIBCPP_CONSTEXPR_AFTER_CXX14 969#endif 970 971#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 972#define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 973#else 974#define _LIBCPP_CONSTEXPR_AFTER_CXX17 975#endif 976 977#if __has_cpp_attribute(nodiscard) && _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) 978#define _LIBCPP_NODISCARD_AFTER_CXX17 [[nodiscard]] 979#else 980#define _LIBCPP_NODISCARD_AFTER_CXX17 981#endif 982 983// FIXME: Remove all usages of this macro once compilers catch up. 984#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606L) 985# define _LIBCPP_HAS_NO_INLINE_VARIABLES 986#endif 987 988#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 989# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 990#else 991# define _LIBCPP_EXPLICIT_MOVE(x) (x) 992#endif 993 994#ifndef _LIBCPP_HAS_NO_ASAN 995_LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 996 const void *, const void *, const void *, const void *); 997#endif 998 999// Try to find out if RTTI is disabled. 1000// g++ and cl.exe have RTTI on by default and define a macro when it is. 1001// g++ only defines the macro in 4.3.2 and onwards. 1002#if !defined(_LIBCPP_NO_RTTI) 1003# if defined(__GNUC__) && ((__GNUC__ >= 5) || (__GNUC__ == 4 && \ 1004 (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && !defined(__GXX_RTTI) 1005# define _LIBCPP_NO_RTTI 1006# elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1007# define _LIBCPP_NO_RTTI 1008# endif 1009#endif 1010 1011#ifndef _LIBCPP_WEAK 1012# define _LIBCPP_WEAK __attribute__((__weak__)) 1013#endif 1014 1015// Thread API 1016#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1017 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1018 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1019 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1020# if defined(__FreeBSD__) || \ 1021 defined(__Fuchsia__) || \ 1022 defined(__NetBSD__) || \ 1023 defined(__linux__) || \ 1024 defined(__APPLE__) || \ 1025 defined(__CloudABI__) || \ 1026 defined(__sun__) || \ 1027 (defined(__MINGW32__) && __libcpp_has_include(<pthread.h>)) 1028# define _LIBCPP_HAS_THREAD_API_PTHREAD 1029# elif defined(_LIBCPP_WIN32API) 1030# define _LIBCPP_HAS_THREAD_API_WIN32 1031# else 1032# error "No thread API" 1033# endif // _LIBCPP_HAS_THREAD_API 1034#endif // _LIBCPP_HAS_NO_THREADS 1035 1036#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1037# error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1038 _LIBCPP_HAS_NO_THREADS is not defined. 1039#endif 1040 1041#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1042# error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1043 _LIBCPP_HAS_NO_THREADS is defined. 1044#endif 1045 1046#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1047# error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1048 _LIBCPP_HAS_NO_THREADS is defined. 1049#endif 1050 1051// Systems that use capability-based security (FreeBSD with Capsicum, 1052// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1053// Functions like open(), rename(), unlink() and stat() should not be 1054// used, as they attempt to access the global filesystem namespace. 1055#ifdef __CloudABI__ 1056#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1057#endif 1058 1059// CloudABI is intended for running networked services. Processes do not 1060// have standard input and output channels. 1061#ifdef __CloudABI__ 1062#define _LIBCPP_HAS_NO_STDIN 1063#define _LIBCPP_HAS_NO_STDOUT 1064#endif 1065 1066#if defined(__BIONIC__) || defined(__CloudABI__) || \ 1067 defined(__Fuchsia__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1068#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1069#endif 1070 1071// Thread-unsafe functions such as strtok() and localtime() 1072// are not available. 1073#ifdef __CloudABI__ 1074#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1075#endif 1076 1077#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1078#define _LIBCPP_HAS_C_ATOMIC_IMP 1079#elif _GNUC_VER > 407 1080#define _LIBCPP_HAS_GCC_ATOMIC_IMP 1081#endif 1082 1083#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \ 1084 || defined(_LIBCPP_HAS_NO_THREADS) 1085#define _LIBCPP_HAS_NO_ATOMIC_HEADER 1086#endif 1087 1088#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1089#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1090#endif 1091 1092#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1093#if defined(__clang__) && __has_attribute(acquire_capability) 1094// Work around the attribute handling in clang. When both __declspec and 1095// __attribute__ are present, the processing goes awry preventing the definition 1096// of the types. 1097#if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1098#define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1099#endif 1100#endif 1101#endif 1102 1103#if __has_attribute(require_constant_initialization) 1104#define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1105#else 1106#define _LIBCPP_SAFE_STATIC 1107#endif 1108 1109#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1110# define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1111#endif 1112 1113#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1114#if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1115#define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1116#endif 1117#endif 1118 1119#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1120# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1121 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1122# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1123 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1124#else 1125# define _LIBCPP_DIAGNOSE_WARNING(...) 1126# define _LIBCPP_DIAGNOSE_ERROR(...) 1127#endif 1128 1129#if __has_attribute(fallthough) || _GNUC_VER >= 700 1130// Use a function like macro to imply that it must be followed by a semicolon 1131#define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1132#else 1133#define _LIBCPP_FALLTHROUGH() ((void)0) 1134#endif 1135 1136#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1137 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1138# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1139#else 1140# define _LIBCPP_DECLSPEC_EMPTY_BASES 1141#endif 1142 1143#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1144# define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1145# define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1146# define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1147# define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1148#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1149 1150#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1151# define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1152#endif 1153 1154#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1155# define _LIBCPP_HAS_NO_IS_AGGREGATE 1156#endif 1157 1158#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1159# define _LIBCPP_HAS_NO_COROUTINES 1160#endif 1161 1162// Decide whether to use availability macros. 1163#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1164 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1165 __has_feature(attribute_availability_with_strict) && \ 1166 __has_feature(attribute_availability_in_templates) 1167#ifdef __APPLE__ 1168#define _LIBCPP_USE_AVAILABILITY_APPLE 1169#endif 1170#endif 1171 1172// Define availability macros. 1173#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1174#define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1175 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1176 __attribute__((availability(ios,strict,introduced=10.0))) \ 1177 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1178 __attribute__((availability(watchos,strict,introduced=3.0))) 1179#define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS __attribute__((unavailable)) 1180#define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH __attribute__((unavailable)) 1181#define _LIBCPP_AVAILABILITY_BAD_ANY_CAST __attribute__((unavailable)) 1182#define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1183 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1184 __attribute__((availability(ios,strict,introduced=10.0))) \ 1185 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1186 __attribute__((availability(watchos,strict,introduced=3.0))) 1187#define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1188 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1189 __attribute__((availability(ios,strict,introduced=10.0))) \ 1190 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1191 __attribute__((availability(watchos,strict,introduced=3.0))) 1192#define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1193 __attribute__((availability(ios,strict,introduced=6.0))) 1194#define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1195 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1196 __attribute__((availability(ios,strict,introduced=7.0))) 1197#define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1198 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1199 __attribute__((availability(ios,strict,introduced=7.0))) 1200#define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1201 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1202 __attribute__((availability(ios,strict,introduced=7.0))) 1203#else 1204#define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1205#define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1206#define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1207#define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1208#define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1209#define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1210#define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1211#define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1212#define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1213#define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1214#endif 1215 1216// Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1217#ifdef _LIBCPP_NO_EXCEPTIONS 1218#define _LIBCPP_AVAILABILITY_DYNARRAY 1219#define _LIBCPP_AVAILABILITY_FUTURE 1220#define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1221#else 1222#define _LIBCPP_AVAILABILITY_DYNARRAY _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1223#define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1224#define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST \ 1225 _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1226#endif 1227 1228// Availability of stream API in the dylib got dropped and re-added. The 1229// extern template should effectively be available at: 1230// availability(macosx,introduced=10.9) 1231// availability(ios,introduced=7.0) 1232#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) && \ 1233 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1234 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1235 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1236 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1237#define _LIBCPP_AVAILABILITY_NO_STREAMS_EXTERN_TEMPLATE 1238#endif 1239 1240#if defined(_LIBCPP_COMPILER_IBM) 1241#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1242#endif 1243 1244#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1245# define _LIBCPP_PUSH_MACROS 1246# define _LIBCPP_POP_MACROS 1247#else 1248 // Don't warn about macro conflicts when we can restore them at the 1249 // end of the header. 1250# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1251# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1252# endif 1253# if defined(_LIBCPP_COMPILER_MSVC) 1254# define _LIBCPP_PUSH_MACROS \ 1255 __pragma(push_macro("min")) \ 1256 __pragma(push_macro("max")) 1257# define _LIBCPP_POP_MACROS \ 1258 __pragma(pop_macro("min")) \ 1259 __pragma(pop_macro("max")) 1260# else 1261# define _LIBCPP_PUSH_MACROS \ 1262 _Pragma("push_macro(\"min\")") \ 1263 _Pragma("push_macro(\"max\")") 1264# define _LIBCPP_POP_MACROS \ 1265 _Pragma("pop_macro(\"min\")") \ 1266 _Pragma("pop_macro(\"max\")") 1267# endif 1268#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1269 1270#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1271# if defined(_DLL) 1272# pragma(lib, "c++.lib") 1273# else 1274# pragma(lib, "libc++.lib") 1275# endif 1276#endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1277 1278#endif // __cplusplus 1279 1280#endif // _LIBCPP_CONFIG 1281