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 7000 37 38#ifndef _LIBCPP_ABI_VERSION 39# ifdef __Fuchsia__ 40# define _LIBCPP_ABI_VERSION 2 41# else 42# define _LIBCPP_ABI_VERSION 1 43# endif 44#endif 45 46#ifndef _LIBCPP_STD_VER 47# if __cplusplus <= 201103L 48# define _LIBCPP_STD_VER 11 49# elif __cplusplus <= 201402L 50# define _LIBCPP_STD_VER 14 51# elif __cplusplus <= 201703L 52# define _LIBCPP_STD_VER 17 53# else 54# define _LIBCPP_STD_VER 18 // current year, or date of c++2a ratification 55# endif 56#endif // _LIBCPP_STD_VER 57 58#if defined(__ELF__) 59# define _LIBCPP_OBJECT_FORMAT_ELF 1 60#elif defined(__MACH__) 61# define _LIBCPP_OBJECT_FORMAT_MACHO 1 62#elif defined(_WIN32) 63# define _LIBCPP_OBJECT_FORMAT_COFF 1 64#elif defined(__wasm__) 65# define _LIBCPP_OBJECT_FORMAT_WASM 1 66#else 67# error Unknown object file format 68#endif 69 70#if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 71// Change short string representation so that string data starts at offset 0, 72// improving its alignment in some cases. 73# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 74// Fix deque iterator type in order to support incomplete types. 75# define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 76// Fix undefined behavior in how std::list stores its linked nodes. 77# define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB 78// Fix undefined behavior in how __tree stores its end and parent nodes. 79# define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB 80// Fix undefined behavior in how __hash_table stores its pointer types. 81# define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB 82# define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB 83# define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE 84// Don't use a nullptr_t simulation type in C++03 instead using C++11 nullptr 85// provided under the alternate keyword __nullptr, which changes the mangling 86// of nullptr_t. This option is ABI incompatible with GCC in C++03 mode. 87# define _LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR 88// Define the `pointer_safety` enum as a C++11 strongly typed enumeration 89// instead of as a class simulating an enum. If this option is enabled 90// `pointer_safety` and `get_pointer_safety()` will no longer be available 91// in C++03. 92# define _LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE 93// Define a key function for `bad_function_call` in the library, to centralize 94// its vtable and typeinfo to libc++ rather than having all other libraries 95// using that class define their own copies. 96# define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 97// Enable optimized version of __do_get_(un)signed which avoids redundant copies. 98# define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET 99// Use the smallest possible integer type to represent the index of the variant. 100// Previously libc++ used "unsigned int" exclusivly. 101# define _LIBCPP_ABI_VARIANT_INDEX_TYPE_OPTIMIZATION 102#elif _LIBCPP_ABI_VERSION == 1 103# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 104// Enable compiling copies of now inline methods into the dylib to support 105// applications compiled against older libraries. This is unnecessary with 106// COFF dllexport semantics, since dllexport forces a non-inline definition 107// of inline functions to be emitted anyway. Our own non-inline copy would 108// conflict with the dllexport-emitted copy, so we disable it. 109# define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS 110# endif 111// Feature macros for disabling pre ABI v1 features. All of these options 112// are deprecated. 113# if defined(__FreeBSD__) 114# define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR 115# endif 116#endif 117 118#ifdef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 119#error "_LIBCPP_TRIVIAL_PAIR_COPY_CTOR" is no longer supported. \ 120 use _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR instead 121#endif 122 123#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y 124#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) 125 126#define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION) 127 128#if __cplusplus < 201103L 129#define _LIBCPP_CXX03_LANG 130#endif 131 132#ifndef __has_attribute 133#define __has_attribute(__x) 0 134#endif 135 136#ifndef __has_builtin 137#define __has_builtin(__x) 0 138#endif 139 140#ifndef __has_extension 141#define __has_extension(__x) 0 142#endif 143 144#ifndef __has_feature 145#define __has_feature(__x) 0 146#endif 147 148#ifndef __has_cpp_attribute 149#define __has_cpp_attribute(__x) 0 150#endif 151 152// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by 153// the compiler and '1' otherwise. 154#ifndef __is_identifier 155#define __is_identifier(__x) 1 156#endif 157 158#ifndef __has_declspec_attribute 159#define __has_declspec_attribute(__x) 0 160#endif 161 162#define __has_keyword(__x) !(__is_identifier(__x)) 163 164#ifndef __has_include 165#define __has_include(...) 0 166#endif 167 168#if defined(__clang__) 169# define _LIBCPP_COMPILER_CLANG 170# ifndef __apple_build_version__ 171# define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__) 172# endif 173#elif defined(__GNUC__) 174# define _LIBCPP_COMPILER_GCC 175#elif defined(_MSC_VER) 176# define _LIBCPP_COMPILER_MSVC 177#elif defined(__IBMCPP__) 178# define _LIBCPP_COMPILER_IBM 179#endif 180 181#ifndef _LIBCPP_CLANG_VER 182#define _LIBCPP_CLANG_VER 0 183#endif 184 185// FIXME: ABI detection should be done via compiler builtin macros. This 186// is just a placeholder until Clang implements such macros. For now assume 187// that Windows compilers pretending to be MSVC++ target the Microsoft ABI, 188// and allow the user to explicitly specify the ABI to handle cases where this 189// heuristic falls short. 190#if defined(_LIBCPP_ABI_FORCE_ITANIUM) && defined(_LIBCPP_ABI_FORCE_MICROSOFT) 191# error "Only one of _LIBCPP_ABI_FORCE_ITANIUM and _LIBCPP_ABI_FORCE_MICROSOFT can be defined" 192#elif defined(_LIBCPP_ABI_FORCE_ITANIUM) 193# define _LIBCPP_ABI_ITANIUM 194#elif defined(_LIBCPP_ABI_FORCE_MICROSOFT) 195# define _LIBCPP_ABI_MICROSOFT 196#else 197# if defined(_WIN32) && defined(_MSC_VER) 198# define _LIBCPP_ABI_MICROSOFT 199# else 200# define _LIBCPP_ABI_ITANIUM 201# endif 202#endif 203 204// Need to detect which libc we're using if we're on Linux. 205#if defined(__linux__) 206# include <features.h> 207# if defined(__GLIBC_PREREQ) 208# define _LIBCPP_GLIBC_PREREQ(a, b) __GLIBC_PREREQ(a, b) 209# else 210# define _LIBCPP_GLIBC_PREREQ(a, b) 0 211# endif // defined(__GLIBC_PREREQ) 212#endif // defined(__linux__) 213 214#ifdef __LITTLE_ENDIAN__ 215# if __LITTLE_ENDIAN__ 216# define _LIBCPP_LITTLE_ENDIAN 217# endif // __LITTLE_ENDIAN__ 218#endif // __LITTLE_ENDIAN__ 219 220#ifdef __BIG_ENDIAN__ 221# if __BIG_ENDIAN__ 222# define _LIBCPP_BIG_ENDIAN 223# endif // __BIG_ENDIAN__ 224#endif // __BIG_ENDIAN__ 225 226#ifdef __BYTE_ORDER__ 227# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 228# define _LIBCPP_LITTLE_ENDIAN 229# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 230# define _LIBCPP_BIG_ENDIAN 231# endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 232#endif // __BYTE_ORDER__ 233 234#ifdef __FreeBSD__ 235# include <sys/endian.h> 236# if _BYTE_ORDER == _LITTLE_ENDIAN 237# define _LIBCPP_LITTLE_ENDIAN 238# else // _BYTE_ORDER == _LITTLE_ENDIAN 239# define _LIBCPP_BIG_ENDIAN 240# endif // _BYTE_ORDER == _LITTLE_ENDIAN 241# ifndef __LONG_LONG_SUPPORTED 242# define _LIBCPP_HAS_NO_LONG_LONG 243# endif // __LONG_LONG_SUPPORTED 244#endif // __FreeBSD__ 245 246#ifdef __NetBSD__ 247# include <sys/endian.h> 248# if _BYTE_ORDER == _LITTLE_ENDIAN 249# define _LIBCPP_LITTLE_ENDIAN 250# else // _BYTE_ORDER == _LITTLE_ENDIAN 251# define _LIBCPP_BIG_ENDIAN 252# endif // _BYTE_ORDER == _LITTLE_ENDIAN 253# define _LIBCPP_HAS_QUICK_EXIT 254#endif // __NetBSD__ 255 256#if defined(_WIN32) 257# define _LIBCPP_WIN32API 258# define _LIBCPP_LITTLE_ENDIAN 259# define _LIBCPP_SHORT_WCHAR 1 260// Both MinGW and native MSVC provide a "MSVC"-like enviroment 261# define _LIBCPP_MSVCRT_LIKE 262// If mingw not explicitly detected, assume using MS C runtime only if 263// a MS compatibility version is specified. 264# if defined(_MSC_VER) && !defined(__MINGW32__) 265# define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 266# endif 267# if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 268# define _LIBCPP_HAS_BITSCAN64 269# endif 270# define _LIBCPP_HAS_OPEN_WITH_WCHAR 271# if defined(_LIBCPP_MSVCRT) 272# define _LIBCPP_HAS_QUICK_EXIT 273# endif 274 275// Some CRT APIs are unavailable to store apps 276# if defined(WINAPI_FAMILY) 277# include <winapifamily.h> 278# if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 279 (!defined(WINAPI_PARTITION_SYSTEM) || \ 280 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 281# define _LIBCPP_WINDOWS_STORE_APP 282# endif 283# endif 284#endif // defined(_WIN32) 285 286#ifdef __sun__ 287# include <sys/isa_defs.h> 288# ifdef _LITTLE_ENDIAN 289# define _LIBCPP_LITTLE_ENDIAN 290# else 291# define _LIBCPP_BIG_ENDIAN 292# endif 293#endif // __sun__ 294 295#if defined(__CloudABI__) 296 // Certain architectures provide arc4random(). Prefer using 297 // arc4random() over /dev/{u,}random to make it possible to obtain 298 // random data even when using sandboxing mechanisms such as chroots, 299 // Capsicum, etc. 300# define _LIBCPP_USING_ARC4_RANDOM 301#elif defined(__Fuchsia__) 302# define _LIBCPP_USING_GETENTROPY 303#elif defined(__native_client__) 304 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, 305 // including accesses to the special files under /dev. C++11's 306 // std::random_device is instead exposed through a NaCl syscall. 307# define _LIBCPP_USING_NACL_RANDOM 308#elif defined(_LIBCPP_WIN32API) 309# define _LIBCPP_USING_WIN32_RANDOM 310#else 311# define _LIBCPP_USING_DEV_RANDOM 312#endif 313 314#if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 315# include <endian.h> 316# if __BYTE_ORDER == __LITTLE_ENDIAN 317# define _LIBCPP_LITTLE_ENDIAN 318# elif __BYTE_ORDER == __BIG_ENDIAN 319# define _LIBCPP_BIG_ENDIAN 320# else // __BYTE_ORDER == __BIG_ENDIAN 321# error unable to determine endian 322# endif 323#endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 324 325#if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 326# define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 327#else 328# define _LIBCPP_NO_CFI 329#endif 330 331#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 332# if defined(__FreeBSD__) 333# define _LIBCPP_HAS_QUICK_EXIT 334# define _LIBCPP_HAS_C11_FEATURES 335# elif defined(__Fuchsia__) 336# define _LIBCPP_HAS_QUICK_EXIT 337# define _LIBCPP_HAS_TIMESPEC_GET 338# define _LIBCPP_HAS_C11_FEATURES 339# elif defined(__linux__) 340# if !defined(_LIBCPP_HAS_MUSL_LIBC) 341# if _LIBCPP_GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 342# define _LIBCPP_HAS_QUICK_EXIT 343# endif 344# if _LIBCPP_GLIBC_PREREQ(2, 17) 345# define _LIBCPP_HAS_C11_FEATURES 346# define _LIBCPP_HAS_TIMESPEC_GET 347# endif 348# else // defined(_LIBCPP_HAS_MUSL_LIBC) 349# define _LIBCPP_HAS_QUICK_EXIT 350# define _LIBCPP_HAS_TIMESPEC_GET 351# define _LIBCPP_HAS_C11_FEATURES 352# endif 353# endif // __linux__ 354#endif 355 356#if defined(_LIBCPP_COMPILER_CLANG) 357 358// _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for 359// _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility. 360#if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 361 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2)) || \ 362 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 363#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 364#endif 365 366#if __has_feature(cxx_alignas) 367# define _ALIGNAS_TYPE(x) alignas(x) 368# define _ALIGNAS(x) alignas(x) 369#else 370# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 371# define _ALIGNAS(x) __attribute__((__aligned__(x))) 372#endif 373 374#if __cplusplus < 201103L 375typedef __char16_t char16_t; 376typedef __char32_t char32_t; 377#endif 378 379#if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS) 380#define _LIBCPP_NO_EXCEPTIONS 381#endif 382 383#if !(__has_feature(cxx_rtti)) && !defined(_LIBCPP_NO_RTTI) 384#define _LIBCPP_NO_RTTI 385#endif 386 387#if !(__has_feature(cxx_strong_enums)) 388#define _LIBCPP_HAS_NO_STRONG_ENUMS 389#endif 390 391#if !(__has_feature(cxx_decltype)) 392#define _LIBCPP_HAS_NO_DECLTYPE 393#endif 394 395#if __has_feature(cxx_attributes) 396# define _LIBCPP_NORETURN [[noreturn]] 397#else 398# define _LIBCPP_NORETURN __attribute__ ((noreturn)) 399#endif 400 401#if !(__has_feature(cxx_lambdas)) 402#define _LIBCPP_HAS_NO_LAMBDAS 403#endif 404 405#if !(__has_feature(cxx_nullptr)) 406# if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 407# define nullptr __nullptr 408# else 409# define _LIBCPP_HAS_NO_NULLPTR 410# endif 411#endif 412 413#if !(__has_feature(cxx_rvalue_references)) 414#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 415#endif 416 417#if !(__has_feature(cxx_auto_type)) 418#define _LIBCPP_HAS_NO_AUTO_TYPE 419#endif 420 421#if !(__has_feature(cxx_variadic_templates)) 422#define _LIBCPP_HAS_NO_VARIADICS 423#endif 424 425#if !(__has_feature(cxx_generalized_initializers)) 426#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 427#endif 428 429#if __has_feature(is_base_of) 430#define _LIBCPP_HAS_IS_BASE_OF 431#endif 432 433#if __has_feature(is_final) 434#define _LIBCPP_HAS_IS_FINAL 435#endif 436 437// Objective-C++ features (opt-in) 438#if __has_feature(objc_arc) 439#define _LIBCPP_HAS_OBJC_ARC 440#endif 441 442#if __has_feature(objc_arc_weak) 443#define _LIBCPP_HAS_OBJC_ARC_WEAK 444#endif 445 446#if !(__has_feature(cxx_constexpr)) 447#define _LIBCPP_HAS_NO_CONSTEXPR 448#endif 449 450#if !(__has_feature(cxx_relaxed_constexpr)) 451#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 452#endif 453 454#if !(__has_feature(cxx_variable_templates)) 455#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 456#endif 457 458#if !(__has_feature(cxx_noexcept)) 459#define _LIBCPP_HAS_NO_NOEXCEPT 460#endif 461 462#if __has_feature(underlying_type) 463#define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 464#endif 465 466#if __has_feature(is_literal) 467#define _LIBCPP_IS_LITERAL(T) __is_literal(T) 468#endif 469 470// Inline namespaces are available in Clang regardless of C++ dialect. 471#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE { 472#define _LIBCPP_END_NAMESPACE_STD } } 473#define _VSTD std::_LIBCPP_NAMESPACE 474 475namespace std { 476 inline namespace _LIBCPP_NAMESPACE { 477 } 478} 479 480#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 481#define _LIBCPP_HAS_NO_ASAN 482#endif 483 484// Allow for build-time disabling of unsigned integer sanitization 485#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 486#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 487#endif 488 489#if __has_builtin(__builtin_launder) 490#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 491#endif 492 493#if !__is_identifier(__has_unique_object_representations) 494#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 495#endif 496 497#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 498 499#elif defined(_LIBCPP_COMPILER_GCC) 500 501#define _ALIGNAS(x) __attribute__((__aligned__(x))) 502#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 503 504#define _LIBCPP_NORETURN __attribute__((noreturn)) 505 506#if _GNUC_VER >= 407 507#define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 508#define _LIBCPP_IS_LITERAL(T) __is_literal_type(T) 509#define _LIBCPP_HAS_IS_FINAL 510#endif 511 512#if defined(__GNUC__) && _GNUC_VER >= 403 513#define _LIBCPP_HAS_IS_BASE_OF 514#endif 515 516#if !__EXCEPTIONS && !defined(_LIBCPP_NO_EXCEPTIONS) 517#define _LIBCPP_NO_EXCEPTIONS 518#endif 519 520// constexpr was added to GCC in 4.6. 521#if _GNUC_VER < 406 522# define _LIBCPP_HAS_NO_CONSTEXPR 523// Can only use constexpr in c++11 mode. 524#elif !defined(__GXX_EXPERIMENTAL_CXX0X__) && __cplusplus < 201103L 525# define _LIBCPP_HAS_NO_CONSTEXPR 526#endif 527 528// Determine if GCC supports relaxed constexpr 529#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 530#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 531#endif 532 533// GCC 5 will support variable templates 534#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 535#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 536#endif 537 538#ifndef __GXX_EXPERIMENTAL_CXX0X__ 539 540#define _LIBCPP_HAS_NO_DECLTYPE 541#define _LIBCPP_HAS_NO_NULLPTR 542#define _LIBCPP_HAS_NO_UNICODE_CHARS 543#define _LIBCPP_HAS_NO_VARIADICS 544#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 545#define _LIBCPP_HAS_NO_STRONG_ENUMS 546#define _LIBCPP_HAS_NO_NOEXCEPT 547 548#else // __GXX_EXPERIMENTAL_CXX0X__ 549 550#if _GNUC_VER < 403 551#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 552#endif 553 554 555#if _GNUC_VER < 404 556#define _LIBCPP_HAS_NO_DECLTYPE 557#define _LIBCPP_HAS_NO_UNICODE_CHARS 558#define _LIBCPP_HAS_NO_VARIADICS 559#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 560#endif // _GNUC_VER < 404 561 562#if _GNUC_VER < 406 563#define _LIBCPP_HAS_NO_NOEXCEPT 564#define _LIBCPP_HAS_NO_NULLPTR 565#endif 566 567#endif // __GXX_EXPERIMENTAL_CXX0X__ 568 569#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_NAMESPACE { 570#define _LIBCPP_END_NAMESPACE_STD } } 571#define _VSTD std::_LIBCPP_NAMESPACE 572 573namespace std { 574 inline namespace _LIBCPP_NAMESPACE { 575 } 576} 577 578#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 579#define _LIBCPP_HAS_NO_ASAN 580#endif 581 582#if _GNUC_VER >= 700 583#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 584#endif 585 586#if _GNUC_VER >= 700 587#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 588#endif 589 590#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 591 592#elif defined(_LIBCPP_COMPILER_MSVC) 593 594#define _LIBCPP_TOSTRING2(x) #x 595#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 596#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 597 598#if _MSC_VER < 1900 599#error "MSVC versions prior to Visual Studio 2015 are not supported" 600#endif 601 602#define _LIBCPP_HAS_IS_BASE_OF 603#define _LIBCPP_HAS_NO_CONSTEXPR 604#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 605#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 606#define _LIBCPP_HAS_NO_NOEXCEPT 607#define __alignof__ __alignof 608#define _LIBCPP_NORETURN __declspec(noreturn) 609#define _ALIGNAS(x) __declspec(align(x)) 610#define _ALIGNAS_TYPE(x) alignas(x) 611#define _LIBCPP_HAS_NO_VARIADICS 612 613#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { 614#define _LIBCPP_END_NAMESPACE_STD } 615#define _VSTD std 616 617namespace std { 618} 619 620#define _LIBCPP_WEAK 621 622#define _LIBCPP_HAS_NO_ASAN 623 624#define _LIBCPP_ALWAYS_INLINE __forceinline 625 626#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 627 628#elif defined(_LIBCPP_COMPILER_IBM) 629 630#define _ALIGNAS(x) __attribute__((__aligned__(x))) 631#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 632#define _ATTRIBUTE(x) __attribute__((x)) 633#define _LIBCPP_NORETURN __attribute__((noreturn)) 634 635#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 636#define _LIBCPP_HAS_NO_NOEXCEPT 637#define _LIBCPP_HAS_NO_NULLPTR 638#define _LIBCPP_HAS_NO_UNICODE_CHARS 639#define _LIBCPP_HAS_IS_BASE_OF 640#define _LIBCPP_HAS_IS_FINAL 641#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 642 643#if defined(_AIX) 644#define __MULTILOCALE_API 645#endif 646 647#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE { 648#define _LIBCPP_END_NAMESPACE_STD } } 649#define _VSTD std::_LIBCPP_NAMESPACE 650 651namespace std { 652 inline namespace _LIBCPP_NAMESPACE { 653 } 654} 655 656#define _LIBCPP_HAS_NO_ASAN 657 658#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 659 660#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 661 662#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 663 664#if _LIBCPP_STD_VER >= 17 665#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 666 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 667#else 668#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 669 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 670#endif 671 672#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 673 _LIBCPP_END_NAMESPACE_STD } } 674 675#define _VSTD_FS _VSTD::__fs::filesystem 676 677 678#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 679 680#ifdef _DLL 681# define _LIBCPP_CRT_FUNC __declspec(dllimport) 682#else 683# define _LIBCPP_CRT_FUNC 684#endif 685 686#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 687# define _LIBCPP_DLL_VIS 688# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 689# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 690# define _LIBCPP_OVERRIDABLE_FUNC_VIS 691#elif defined(_LIBCPP_BUILDING_LIBRARY) 692# define _LIBCPP_DLL_VIS __declspec(dllexport) 693# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 694# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 695# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 696#else 697# define _LIBCPP_DLL_VIS __declspec(dllimport) 698# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 699# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 700# define _LIBCPP_OVERRIDABLE_FUNC_VIS 701#endif 702 703#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 704#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 705#define _LIBCPP_EXTERN_VIS _LIBCPP_DLL_VIS 706#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 707#define _LIBCPP_HIDDEN 708#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 709#define _LIBCPP_TEMPLATE_VIS 710#define _LIBCPP_ENUM_VIS 711 712#if defined(_LIBCPP_COMPILER_MSVC) 713# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __forceinline 714#else 715# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 716#endif 717 718#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 719 720#ifndef _LIBCPP_HIDDEN 721# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 722# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 723# else 724# define _LIBCPP_HIDDEN 725# endif 726#endif 727 728#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 729# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 730// The inline should be removed once PR32114 is resolved 731# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 732# else 733# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 734# endif 735#endif 736 737#ifndef _LIBCPP_FUNC_VIS 738# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 739# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 740# else 741# define _LIBCPP_FUNC_VIS 742# endif 743#endif 744 745#ifndef _LIBCPP_TYPE_VIS 746# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 747# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 748# else 749# define _LIBCPP_TYPE_VIS 750# endif 751#endif 752 753#ifndef _LIBCPP_TEMPLATE_VIS 754# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 755# if __has_attribute(__type_visibility__) 756# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 757# else 758# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 759# endif 760# else 761# define _LIBCPP_TEMPLATE_VIS 762# endif 763#endif 764 765#ifndef _LIBCPP_EXTERN_VIS 766#define _LIBCPP_EXTERN_VIS 767#endif 768 769#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 770#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 771#endif 772 773#ifndef _LIBCPP_EXCEPTION_ABI 774# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 775# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 776# else 777# define _LIBCPP_EXCEPTION_ABI 778# endif 779#endif 780 781#ifndef _LIBCPP_ENUM_VIS 782# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 783# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 784# else 785# define _LIBCPP_ENUM_VIS 786# endif 787#endif 788 789#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 790# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 791# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 792# else 793# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 794# endif 795#endif 796 797#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 798#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 799#endif 800 801#if __has_attribute(internal_linkage) 802# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 803#else 804# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 805#endif 806 807#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 808# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 809# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 810# else 811# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 812# endif 813#endif 814 815#ifndef _LIBCPP_HIDE_FROM_ABI 816# if _LIBCPP_HIDE_FROM_ABI_PER_TU 817# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 818# else 819# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_ALWAYS_INLINE 820# endif 821#endif 822 823// Just so we can migrate to _LIBCPP_HIDE_FROM_ABI gradually. 824#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 825 826#ifndef _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 827# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 828# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__visibility__("default"), __always_inline__)) 829# else 830# define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__always_inline__)) 831# endif 832#endif 833 834#ifndef _LIBCPP_PREFERRED_OVERLOAD 835# if __has_attribute(__enable_if__) 836# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 837# endif 838#endif 839 840#ifndef _LIBCPP_HAS_NO_NOEXCEPT 841# define _NOEXCEPT noexcept 842# define _NOEXCEPT_(x) noexcept(x) 843#else 844# define _NOEXCEPT throw() 845# define _NOEXCEPT_(x) 846#endif 847 848#if defined(_LIBCPP_DEBUG_USE_EXCEPTIONS) 849# if !defined(_LIBCPP_DEBUG) 850# error cannot use _LIBCPP_DEBUG_USE_EXCEPTIONS unless _LIBCPP_DEBUG is defined 851# endif 852# ifdef _LIBCPP_HAS_NO_NOEXCEPT 853# define _NOEXCEPT_DEBUG 854# define _NOEXCEPT_DEBUG_(x) 855# else 856# define _NOEXCEPT_DEBUG noexcept(false) 857# define _NOEXCEPT_DEBUG_(x) noexcept(false) 858# endif 859#else 860# define _NOEXCEPT_DEBUG _NOEXCEPT 861# define _NOEXCEPT_DEBUG_(x) _NOEXCEPT_(x) 862#endif 863 864#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 865typedef unsigned short char16_t; 866typedef unsigned int char32_t; 867#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 868 869#ifndef __SIZEOF_INT128__ 870#define _LIBCPP_HAS_NO_INT128 871#endif 872 873#ifdef _LIBCPP_CXX03_LANG 874# if __has_extension(c_static_assert) 875# define static_assert(__b, __m) _Static_assert(__b, __m) 876# else 877extern "C++" { 878template <bool> struct __static_assert_test; 879template <> struct __static_assert_test<true> {}; 880template <unsigned> struct __static_assert_check {}; 881} 882# define static_assert(__b, __m) \ 883 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \ 884 _LIBCPP_CONCAT(__t, __LINE__) 885# endif // __has_extension(c_static_assert) 886#endif // _LIBCPP_CXX03_LANG 887 888#ifdef _LIBCPP_HAS_NO_DECLTYPE 889// GCC 4.6 provides __decltype in all standard modes. 890# if __has_keyword(__decltype) || _LIBCPP_CLANG_VER >= 304 || _GNUC_VER >= 406 891# define decltype(__x) __decltype(__x) 892# else 893# define decltype(__x) __typeof__(__x) 894# endif 895#endif 896 897#ifdef _LIBCPP_HAS_NO_CONSTEXPR 898# define _LIBCPP_CONSTEXPR 899#else 900# define _LIBCPP_CONSTEXPR constexpr 901#endif 902 903#ifdef _LIBCPP_CXX03_LANG 904# define _LIBCPP_DEFAULT {} 905#else 906# define _LIBCPP_DEFAULT = default; 907#endif 908 909#ifdef _LIBCPP_CXX03_LANG 910# define _LIBCPP_EQUAL_DELETE 911#else 912# define _LIBCPP_EQUAL_DELETE = delete 913#endif 914 915#ifdef __GNUC__ 916# define _NOALIAS __attribute__((__malloc__)) 917#else 918# define _NOALIAS 919#endif 920 921#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 922 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 923# define _LIBCPP_EXPLICIT explicit 924#else 925# define _LIBCPP_EXPLICIT 926#endif 927 928#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 929#define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 930#endif 931 932#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 933# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 934# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 935 __lx __v_; \ 936 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 937 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 938 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 939 }; 940#else // _LIBCPP_HAS_NO_STRONG_ENUMS 941# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 942# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 943#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 944 945#ifdef _LIBCPP_DEBUG 946# if _LIBCPP_DEBUG == 0 947# define _LIBCPP_DEBUG_LEVEL 1 948# elif _LIBCPP_DEBUG == 1 949# define _LIBCPP_DEBUG_LEVEL 2 950# else 951# error Supported values for _LIBCPP_DEBUG are 0 and 1 952# endif 953# if !defined(_LIBCPP_BUILDING_LIBRARY) 954# define _LIBCPP_EXTERN_TEMPLATE(...) 955# endif 956#endif 957 958#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 959#define _LIBCPP_EXTERN_TEMPLATE(...) 960#define _LIBCPP_EXTERN_TEMPLATE2(...) 961#endif 962 963#ifndef _LIBCPP_EXTERN_TEMPLATE 964#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 965#endif 966 967#ifndef _LIBCPP_EXTERN_TEMPLATE2 968#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 969#endif 970 971#if defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__) 972#define _LIBCPP_NONUNIQUE_RTTI_BIT (1ULL << 63) 973#endif 974 975#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 976 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 977#define _LIBCPP_LOCALE__L_EXTENSIONS 1 978#endif 979 980#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 981// Most unix variants have catopen. These are the specific ones that don't. 982# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 983# define _LIBCPP_HAS_CATOPEN 1 984# endif 985#endif 986 987#ifdef __FreeBSD__ 988#define _DECLARE_C99_LDBL_MATH 1 989#endif 990 991// If we are getting operator new from the MSVC CRT, then allocation overloads 992// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 993#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 994#define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 995#endif 996 997#if defined(__APPLE__) 998# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 999 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 1000# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 1001# endif 1002# if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) 1003# if __MAC_OS_X_VERSION_MIN_REQUIRED < 1060 1004# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 1005# endif 1006# endif 1007#endif // defined(__APPLE__) 1008 1009#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 1010 !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1011 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606) 1012# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 1013#endif 1014 1015#if defined(__APPLE__) || defined(__FreeBSD__) 1016#define _LIBCPP_HAS_DEFAULTRUNELOCALE 1017#endif 1018 1019#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 1020#define _LIBCPP_WCTYPE_IS_MASK 1021#endif 1022 1023#if _LIBCPP_STD_VER > 11 1024# define _LIBCPP_DEPRECATED [[deprecated]] 1025#else 1026# define _LIBCPP_DEPRECATED 1027#endif 1028 1029#if _LIBCPP_STD_VER <= 11 1030# define _LIBCPP_EXPLICIT_AFTER_CXX11 1031# define _LIBCPP_DEPRECATED_AFTER_CXX11 1032#else 1033# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1034# define _LIBCPP_DEPRECATED_AFTER_CXX11 [[deprecated]] 1035#endif 1036 1037#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1038# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1039#else 1040# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1041#endif 1042 1043#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1044# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1045#else 1046# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1047#endif 1048 1049#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1050# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1051#else 1052# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1053#endif 1054 1055#if __has_cpp_attribute(nodiscard) && _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) 1056# define _LIBCPP_NODISCARD_AFTER_CXX17 [[nodiscard]] 1057#else 1058# define _LIBCPP_NODISCARD_AFTER_CXX17 1059#endif 1060 1061#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1062# define _LIBCPP_INLINE_VAR inline 1063#else 1064# define _LIBCPP_INLINE_VAR 1065#endif 1066 1067#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1068# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 1069#else 1070# define _LIBCPP_EXPLICIT_MOVE(x) (x) 1071#endif 1072 1073#ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG 1074#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1075#define _LIBCPP_CONSTEXPR_IF_NODEBUG 1076#else 1077#define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1078#endif 1079#endif 1080 1081#ifndef _LIBCPP_HAS_NO_ASAN 1082_LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 1083 const void *, const void *, const void *, const void *); 1084#endif 1085 1086// Try to find out if RTTI is disabled. 1087// g++ and cl.exe have RTTI on by default and define a macro when it is. 1088// g++ only defines the macro in 4.3.2 and onwards. 1089#if !defined(_LIBCPP_NO_RTTI) 1090# if defined(__GNUC__) && \ 1091 ((__GNUC__ >= 5) || \ 1092 (__GNUC__ == 4 && (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && \ 1093 !defined(__GXX_RTTI) 1094# define _LIBCPP_NO_RTTI 1095# elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1096# define _LIBCPP_NO_RTTI 1097# endif 1098#endif 1099 1100#ifndef _LIBCPP_WEAK 1101#define _LIBCPP_WEAK __attribute__((__weak__)) 1102#endif 1103 1104// Thread API 1105#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1106 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1107 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1108 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1109# if defined(__FreeBSD__) || \ 1110 defined(__Fuchsia__) || \ 1111 defined(__NetBSD__) || \ 1112 defined(__linux__) || \ 1113 defined(__APPLE__) || \ 1114 defined(__CloudABI__) || \ 1115 defined(__sun__) || \ 1116 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1117# define _LIBCPP_HAS_THREAD_API_PTHREAD 1118# elif defined(_LIBCPP_WIN32API) 1119# define _LIBCPP_HAS_THREAD_API_WIN32 1120# else 1121# error "No thread API" 1122# endif // _LIBCPP_HAS_THREAD_API 1123#endif // _LIBCPP_HAS_NO_THREADS 1124 1125#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1126#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1127 _LIBCPP_HAS_NO_THREADS is not defined. 1128#endif 1129 1130#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1131#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1132 _LIBCPP_HAS_NO_THREADS is defined. 1133#endif 1134 1135#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1136#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1137 _LIBCPP_HAS_NO_THREADS is defined. 1138#endif 1139 1140// Systems that use capability-based security (FreeBSD with Capsicum, 1141// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1142// Functions like open(), rename(), unlink() and stat() should not be 1143// used, as they attempt to access the global filesystem namespace. 1144#ifdef __CloudABI__ 1145#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1146#endif 1147 1148// CloudABI is intended for running networked services. Processes do not 1149// have standard input and output channels. 1150#ifdef __CloudABI__ 1151#define _LIBCPP_HAS_NO_STDIN 1152#define _LIBCPP_HAS_NO_STDOUT 1153#endif 1154 1155#if defined(__BIONIC__) || defined(__CloudABI__) || \ 1156 defined(__Fuchsia__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1157#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1158#endif 1159 1160// Thread-unsafe functions such as strtok() and localtime() 1161// are not available. 1162#ifdef __CloudABI__ 1163#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1164#endif 1165 1166#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1167# define _LIBCPP_HAS_C_ATOMIC_IMP 1168#elif _GNUC_VER > 407 1169# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1170#endif 1171 1172#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \ 1173 || defined(_LIBCPP_HAS_NO_THREADS) 1174#define _LIBCPP_HAS_NO_ATOMIC_HEADER 1175#endif 1176 1177#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1178#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1179#endif 1180 1181#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1182# if defined(__clang__) && __has_attribute(acquire_capability) 1183// Work around the attribute handling in clang. When both __declspec and 1184// __attribute__ are present, the processing goes awry preventing the definition 1185// of the types. 1186# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1187# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1188# endif 1189# endif 1190#endif 1191 1192#if __has_attribute(require_constant_initialization) 1193# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1194#else 1195# define _LIBCPP_SAFE_STATIC 1196#endif 1197 1198#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1199#define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1200#endif 1201 1202#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1203# if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1204# define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1205# endif 1206#endif 1207 1208#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1209# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1210 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1211# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1212 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1213#else 1214# define _LIBCPP_DIAGNOSE_WARNING(...) 1215# define _LIBCPP_DIAGNOSE_ERROR(...) 1216#endif 1217 1218#if __has_attribute(fallthough) || _GNUC_VER >= 700 1219// Use a function like macro to imply that it must be followed by a semicolon 1220# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1221#else 1222# define _LIBCPP_FALLTHROUGH() ((void)0) 1223#endif 1224 1225#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1226 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1227# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1228#else 1229# define _LIBCPP_DECLSPEC_EMPTY_BASES 1230#endif 1231 1232#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1233#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1234#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1235#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1236#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1237#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1238 1239#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1240#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1241#endif 1242 1243#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1244#define _LIBCPP_HAS_NO_IS_AGGREGATE 1245#endif 1246 1247#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1248#define _LIBCPP_HAS_NO_COROUTINES 1249#endif 1250 1251// FIXME: Correct this macro when either (A) a feature test macro for the 1252// spaceship operator is provided, or (B) a compiler provides a complete 1253// implementation. 1254#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1255 1256// Decide whether to use availability macros. 1257#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1258 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1259 __has_feature(attribute_availability_with_strict) && \ 1260 __has_feature(attribute_availability_in_templates) 1261# ifdef __APPLE__ 1262# define _LIBCPP_USE_AVAILABILITY_APPLE 1263# endif 1264#endif 1265 1266// Define availability macros. 1267#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1268# define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1269 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1270 __attribute__((availability(ios,strict,introduced=10.0))) \ 1271 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1272 __attribute__((availability(watchos,strict,introduced=3.0))) 1273# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS __attribute__((unavailable)) 1274# define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH __attribute__((unavailable)) 1275# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST __attribute__((unavailable)) 1276# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1277 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1278 __attribute__((availability(ios,strict,introduced=10.0))) \ 1279 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1280 __attribute__((availability(watchos,strict,introduced=3.0))) 1281# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1282 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1283 __attribute__((availability(ios,strict,introduced=10.0))) \ 1284 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1285 __attribute__((availability(watchos,strict,introduced=3.0))) 1286# define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1287 __attribute__((availability(ios,strict,introduced=6.0))) 1288# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1289 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1290 __attribute__((availability(ios,strict,introduced=7.0))) 1291# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1292 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1293 __attribute__((availability(ios,strict,introduced=7.0))) 1294# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1295 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1296 __attribute__((availability(ios,strict,introduced=7.0))) 1297#else 1298# define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1299# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1300# define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1301# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1302# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1303# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1304# define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1305# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1306# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1307# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1308#endif 1309 1310// Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1311#ifdef _LIBCPP_NO_EXCEPTIONS 1312# define _LIBCPP_AVAILABILITY_DYNARRAY 1313# define _LIBCPP_AVAILABILITY_FUTURE 1314# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1315#else 1316# define _LIBCPP_AVAILABILITY_DYNARRAY _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1317# define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1318# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST \ 1319 _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1320#endif 1321 1322// Availability of stream API in the dylib got dropped and re-added. The 1323// extern template should effectively be available at: 1324// availability(macosx,introduced=10.9) 1325// availability(ios,introduced=7.0) 1326#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) && \ 1327 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1328 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1329 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1330 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1331#define _LIBCPP_AVAILABILITY_NO_STREAMS_EXTERN_TEMPLATE 1332#endif 1333 1334#if defined(_LIBCPP_COMPILER_IBM) 1335#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1336#endif 1337 1338#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1339# define _LIBCPP_PUSH_MACROS 1340# define _LIBCPP_POP_MACROS 1341#else 1342 // Don't warn about macro conflicts when we can restore them at the 1343 // end of the header. 1344# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1345# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1346# endif 1347# if defined(_LIBCPP_COMPILER_MSVC) 1348# define _LIBCPP_PUSH_MACROS \ 1349 __pragma(push_macro("min")) \ 1350 __pragma(push_macro("max")) 1351# define _LIBCPP_POP_MACROS \ 1352 __pragma(pop_macro("min")) \ 1353 __pragma(pop_macro("max")) 1354# else 1355# define _LIBCPP_PUSH_MACROS \ 1356 _Pragma("push_macro(\"min\")") \ 1357 _Pragma("push_macro(\"max\")") 1358# define _LIBCPP_POP_MACROS \ 1359 _Pragma("pop_macro(\"min\")") \ 1360 _Pragma("pop_macro(\"max\")") 1361# endif 1362#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1363 1364#ifndef _LIBCPP_NO_AUTO_LINK 1365# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1366# if defined(_DLL) 1367# pragma comment(lib, "c++.lib") 1368# else 1369# pragma comment(lib, "libc++.lib") 1370# endif 1371# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1372#endif // _LIBCPP_NO_AUTO_LINK 1373 1374#endif // __cplusplus 1375 1376#endif // _LIBCPP_CONFIG 1377