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 8000 37 38#ifndef _LIBCPP_ABI_VERSION 39# define _LIBCPP_ABI_VERSION 1 40#endif 41 42#ifndef _LIBCPP_STD_VER 43# if __cplusplus <= 201103L 44# define _LIBCPP_STD_VER 11 45# elif __cplusplus <= 201402L 46# define _LIBCPP_STD_VER 14 47# elif __cplusplus <= 201703L 48# define _LIBCPP_STD_VER 17 49# else 50# define _LIBCPP_STD_VER 18 // current year, or date of c++2a ratification 51# endif 52#endif // _LIBCPP_STD_VER 53 54#if defined(__ELF__) 55# define _LIBCPP_OBJECT_FORMAT_ELF 1 56#elif defined(__MACH__) 57# define _LIBCPP_OBJECT_FORMAT_MACHO 1 58#elif defined(_WIN32) 59# define _LIBCPP_OBJECT_FORMAT_COFF 1 60#elif defined(__wasm__) 61# define _LIBCPP_OBJECT_FORMAT_WASM 1 62#else 63# error Unknown object file format 64#endif 65 66#if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 67// Change short string representation so that string data starts at offset 0, 68// improving its alignment in some cases. 69# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 70// Fix deque iterator type in order to support incomplete types. 71# define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 72// Fix undefined behavior in how std::list stores its linked nodes. 73# define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB 74// Fix undefined behavior in how __tree stores its end and parent nodes. 75# define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB 76// Fix undefined behavior in how __hash_table stores its pointer types. 77# define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB 78# define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB 79# define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE 80// Don't use a nullptr_t simulation type in C++03 instead using C++11 nullptr 81// provided under the alternate keyword __nullptr, which changes the mangling 82// of nullptr_t. This option is ABI incompatible with GCC in C++03 mode. 83# define _LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR 84// Define the `pointer_safety` enum as a C++11 strongly typed enumeration 85// instead of as a class simulating an enum. If this option is enabled 86// `pointer_safety` and `get_pointer_safety()` will no longer be available 87// in C++03. 88# define _LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE 89// Define a key function for `bad_function_call` in the library, to centralize 90// its vtable and typeinfo to libc++ rather than having all other libraries 91// using that class define their own copies. 92# define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 93// Enable optimized version of __do_get_(un)signed which avoids redundant copies. 94# define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET 95// Use the smallest possible integer type to represent the index of the variant. 96// Previously libc++ used "unsigned int" exclusivly. 97# define _LIBCPP_ABI_VARIANT_INDEX_TYPE_OPTIMIZATION 98// Unstable attempt to provide a more optimized std::function 99# define _LIBCPP_ABI_OPTIMIZED_FUNCTION 100#elif _LIBCPP_ABI_VERSION == 1 101# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 102// Enable compiling copies of now inline methods into the dylib to support 103// applications compiled against older libraries. This is unnecessary with 104// COFF dllexport semantics, since dllexport forces a non-inline definition 105// of inline functions to be emitted anyway. Our own non-inline copy would 106// conflict with the dllexport-emitted copy, so we disable it. 107# define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS 108# endif 109// Feature macros for disabling pre ABI v1 features. All of these options 110// are deprecated. 111# if defined(__FreeBSD__) 112# define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR 113# endif 114#endif 115 116#ifdef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 117#error "_LIBCPP_TRIVIAL_PAIR_COPY_CTOR" is no longer supported. \ 118 use _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR instead 119#endif 120 121#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y 122#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) 123 124#ifndef _LIBCPP_ABI_NAMESPACE 125# define _LIBCPP_ABI_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION) 126#endif 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#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 471#define _LIBCPP_HAS_NO_ASAN 472#endif 473 474// Allow for build-time disabling of unsigned integer sanitization 475#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 476#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 477#endif 478 479#if __has_builtin(__builtin_launder) 480#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 481#endif 482 483#if !__is_identifier(__has_unique_object_representations) 484#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 485#endif 486 487#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 488 489// No apple compilers support ""d and ""y at this time. 490#if _LIBCPP_CLANG_VER < 800 || defined(__apple_build_version__) 491#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS 492#endif 493 494#elif defined(_LIBCPP_COMPILER_GCC) 495 496#define _ALIGNAS(x) __attribute__((__aligned__(x))) 497#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 498 499#define _LIBCPP_NORETURN __attribute__((noreturn)) 500 501#if _GNUC_VER >= 407 502#define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 503#define _LIBCPP_IS_LITERAL(T) __is_literal_type(T) 504#define _LIBCPP_HAS_IS_FINAL 505#endif 506 507#if defined(__GNUC__) && _GNUC_VER >= 403 508#define _LIBCPP_HAS_IS_BASE_OF 509#endif 510 511#if !__EXCEPTIONS && !defined(_LIBCPP_NO_EXCEPTIONS) 512#define _LIBCPP_NO_EXCEPTIONS 513#endif 514 515// constexpr was added to GCC in 4.6. 516#if _GNUC_VER < 406 517# define _LIBCPP_HAS_NO_CONSTEXPR 518// Can only use constexpr in c++11 mode. 519#elif !defined(__GXX_EXPERIMENTAL_CXX0X__) && __cplusplus < 201103L 520# define _LIBCPP_HAS_NO_CONSTEXPR 521#endif 522 523// Determine if GCC supports relaxed constexpr 524#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 525#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 526#endif 527 528// GCC 5 will support variable templates 529#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 530#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 531#endif 532 533#ifndef __GXX_EXPERIMENTAL_CXX0X__ 534 535#define _LIBCPP_HAS_NO_DECLTYPE 536#define _LIBCPP_HAS_NO_NULLPTR 537#define _LIBCPP_HAS_NO_UNICODE_CHARS 538#define _LIBCPP_HAS_NO_VARIADICS 539#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 540#define _LIBCPP_HAS_NO_STRONG_ENUMS 541#define _LIBCPP_HAS_NO_NOEXCEPT 542 543#else // __GXX_EXPERIMENTAL_CXX0X__ 544 545#if _GNUC_VER < 403 546#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 547#endif 548 549 550#if _GNUC_VER < 404 551#define _LIBCPP_HAS_NO_DECLTYPE 552#define _LIBCPP_HAS_NO_UNICODE_CHARS 553#define _LIBCPP_HAS_NO_VARIADICS 554#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 555#endif // _GNUC_VER < 404 556 557#if _GNUC_VER < 406 558#define _LIBCPP_HAS_NO_NOEXCEPT 559#define _LIBCPP_HAS_NO_NULLPTR 560#endif 561 562#endif // __GXX_EXPERIMENTAL_CXX0X__ 563 564#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 565#define _LIBCPP_HAS_NO_ASAN 566#endif 567 568#if _GNUC_VER >= 700 569#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 570#endif 571 572#if _GNUC_VER >= 700 573#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 574#endif 575 576#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 577 578#elif defined(_LIBCPP_COMPILER_MSVC) 579 580#define _LIBCPP_TOSTRING2(x) #x 581#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 582#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 583 584#if _MSC_VER < 1900 585#error "MSVC versions prior to Visual Studio 2015 are not supported" 586#endif 587 588#define _LIBCPP_HAS_IS_BASE_OF 589#define _LIBCPP_HAS_NO_CONSTEXPR 590#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 591#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 592#define _LIBCPP_HAS_NO_NOEXCEPT 593#define __alignof__ __alignof 594#define _LIBCPP_NORETURN __declspec(noreturn) 595#define _ALIGNAS(x) __declspec(align(x)) 596#define _ALIGNAS_TYPE(x) alignas(x) 597#define _LIBCPP_HAS_NO_VARIADICS 598 599#define _LIBCPP_WEAK 600 601#define _LIBCPP_HAS_NO_ASAN 602 603#define _LIBCPP_ALWAYS_INLINE __forceinline 604 605#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 606 607#elif defined(_LIBCPP_COMPILER_IBM) 608 609#define _ALIGNAS(x) __attribute__((__aligned__(x))) 610#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 611#define _ATTRIBUTE(x) __attribute__((x)) 612#define _LIBCPP_NORETURN __attribute__((noreturn)) 613 614#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 615#define _LIBCPP_HAS_NO_NOEXCEPT 616#define _LIBCPP_HAS_NO_NULLPTR 617#define _LIBCPP_HAS_NO_UNICODE_CHARS 618#define _LIBCPP_HAS_IS_BASE_OF 619#define _LIBCPP_HAS_IS_FINAL 620#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 621 622#if defined(_AIX) 623#define __MULTILOCALE_API 624#endif 625 626#define _LIBCPP_HAS_NO_ASAN 627 628#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 629 630#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 631 632#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 633 634#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 635 636#ifdef _DLL 637# define _LIBCPP_CRT_FUNC __declspec(dllimport) 638#else 639# define _LIBCPP_CRT_FUNC 640#endif 641 642#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 643# define _LIBCPP_DLL_VIS 644# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 645# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 646# define _LIBCPP_OVERRIDABLE_FUNC_VIS 647# define _LIBCPP_EXPORTED_FROM_ABI 648#elif defined(_LIBCPP_BUILDING_LIBRARY) 649# define _LIBCPP_DLL_VIS __declspec(dllexport) 650# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 651# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 652# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 653# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 654#else 655# define _LIBCPP_DLL_VIS __declspec(dllimport) 656# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 657# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 658# define _LIBCPP_OVERRIDABLE_FUNC_VIS 659# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 660#endif 661 662#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 663#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 664#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 665#define _LIBCPP_HIDDEN 666#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 667#define _LIBCPP_TEMPLATE_VIS 668#define _LIBCPP_ENUM_VIS 669 670#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 671 672#ifndef _LIBCPP_HIDDEN 673# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 674# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 675# else 676# define _LIBCPP_HIDDEN 677# endif 678#endif 679 680#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 681# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 682// The inline should be removed once PR32114 is resolved 683# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 684# else 685# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 686# endif 687#endif 688 689#ifndef _LIBCPP_FUNC_VIS 690# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 691# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 692# else 693# define _LIBCPP_FUNC_VIS 694# endif 695#endif 696 697#ifndef _LIBCPP_TYPE_VIS 698# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 699# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 700# else 701# define _LIBCPP_TYPE_VIS 702# endif 703#endif 704 705#ifndef _LIBCPP_TEMPLATE_VIS 706# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 707# if __has_attribute(__type_visibility__) 708# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 709# else 710# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 711# endif 712# else 713# define _LIBCPP_TEMPLATE_VIS 714# endif 715#endif 716 717#ifndef _LIBCPP_EXPORTED_FROM_ABI 718# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 719# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 720# else 721# define _LIBCPP_EXPORTED_FROM_ABI 722# endif 723#endif 724 725#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 726#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 727#endif 728 729#ifndef _LIBCPP_EXCEPTION_ABI 730# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 731# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 732# else 733# define _LIBCPP_EXCEPTION_ABI 734# endif 735#endif 736 737#ifndef _LIBCPP_ENUM_VIS 738# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 739# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 740# else 741# define _LIBCPP_ENUM_VIS 742# endif 743#endif 744 745#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 746# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 747# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 748# else 749# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 750# endif 751#endif 752 753#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 754#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 755#endif 756 757#if __has_attribute(internal_linkage) 758# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 759#else 760# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 761#endif 762 763#if __has_attribute(exclude_from_explicit_instantiation) 764# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 765#else 766 // Try to approximate the effect of exclude_from_explicit_instantiation 767 // (which is that entities are not assumed to be provided by explicit 768 // template instantitations in the dylib) by always inlining those entities. 769# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 770#endif 771 772#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 773# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 774# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 775# else 776# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 777# endif 778#endif 779 780#ifndef _LIBCPP_HIDE_FROM_ABI 781# if _LIBCPP_HIDE_FROM_ABI_PER_TU 782# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 783# else 784# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 785# endif 786#endif 787 788#ifdef _LIBCPP_BUILDING_LIBRARY 789# if _LIBCPP_ABI_VERSION > 1 790# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 791# else 792# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 793# endif 794#else 795# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 796#endif 797 798// Just so we can migrate to the new macros gradually. 799#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 800 801// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 802#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 803#define _LIBCPP_END_NAMESPACE_STD } } 804#define _VSTD std::_LIBCPP_ABI_NAMESPACE 805_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 806 807#if _LIBCPP_STD_VER >= 17 808#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 809 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 810#else 811#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 812 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 813#endif 814 815#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 816 _LIBCPP_END_NAMESPACE_STD } } 817 818#define _VSTD_FS _VSTD::__fs::filesystem 819 820#ifndef _LIBCPP_PREFERRED_OVERLOAD 821# if __has_attribute(__enable_if__) 822# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 823# endif 824#endif 825 826#ifndef _LIBCPP_HAS_NO_NOEXCEPT 827# define _NOEXCEPT noexcept 828# define _NOEXCEPT_(x) noexcept(x) 829#else 830# define _NOEXCEPT throw() 831# define _NOEXCEPT_(x) 832#endif 833 834#if defined(_LIBCPP_DEBUG_USE_EXCEPTIONS) 835# if !defined(_LIBCPP_DEBUG) 836# error cannot use _LIBCPP_DEBUG_USE_EXCEPTIONS unless _LIBCPP_DEBUG is defined 837# endif 838# ifdef _LIBCPP_HAS_NO_NOEXCEPT 839# define _NOEXCEPT_DEBUG 840# define _NOEXCEPT_DEBUG_(x) 841# else 842# define _NOEXCEPT_DEBUG noexcept(false) 843# define _NOEXCEPT_DEBUG_(x) noexcept(false) 844# endif 845#else 846# define _NOEXCEPT_DEBUG _NOEXCEPT 847# define _NOEXCEPT_DEBUG_(x) _NOEXCEPT_(x) 848#endif 849 850#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 851typedef unsigned short char16_t; 852typedef unsigned int char32_t; 853#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 854 855#ifndef __SIZEOF_INT128__ 856#define _LIBCPP_HAS_NO_INT128 857#endif 858 859#ifdef _LIBCPP_CXX03_LANG 860# if __has_extension(c_static_assert) 861# define static_assert(__b, __m) _Static_assert(__b, __m) 862# else 863extern "C++" { 864template <bool> struct __static_assert_test; 865template <> struct __static_assert_test<true> {}; 866template <unsigned> struct __static_assert_check {}; 867} 868# define static_assert(__b, __m) \ 869 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \ 870 _LIBCPP_CONCAT(__t, __LINE__) 871# endif // __has_extension(c_static_assert) 872#endif // _LIBCPP_CXX03_LANG 873 874#ifdef _LIBCPP_HAS_NO_DECLTYPE 875// GCC 4.6 provides __decltype in all standard modes. 876# if __has_keyword(__decltype) || _LIBCPP_CLANG_VER >= 304 || _GNUC_VER >= 406 877# define decltype(__x) __decltype(__x) 878# else 879# define decltype(__x) __typeof__(__x) 880# endif 881#endif 882 883#ifdef _LIBCPP_HAS_NO_CONSTEXPR 884# define _LIBCPP_CONSTEXPR 885#else 886# define _LIBCPP_CONSTEXPR constexpr 887#endif 888 889#ifdef _LIBCPP_CXX03_LANG 890# define _LIBCPP_DEFAULT {} 891#else 892# define _LIBCPP_DEFAULT = default; 893#endif 894 895#ifdef _LIBCPP_CXX03_LANG 896# define _LIBCPP_EQUAL_DELETE 897#else 898# define _LIBCPP_EQUAL_DELETE = delete 899#endif 900 901#ifdef __GNUC__ 902# define _NOALIAS __attribute__((__malloc__)) 903#else 904# define _NOALIAS 905#endif 906 907#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 908 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 909# define _LIBCPP_EXPLICIT explicit 910#else 911# define _LIBCPP_EXPLICIT 912#endif 913 914#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 915#define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 916#endif 917 918#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 919# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 920# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 921 __lx __v_; \ 922 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 923 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 924 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 925 }; 926#else // _LIBCPP_HAS_NO_STRONG_ENUMS 927# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 928# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 929#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 930 931#ifdef _LIBCPP_DEBUG 932# if _LIBCPP_DEBUG == 0 933# define _LIBCPP_DEBUG_LEVEL 1 934# elif _LIBCPP_DEBUG == 1 935# define _LIBCPP_DEBUG_LEVEL 2 936# else 937# error Supported values for _LIBCPP_DEBUG are 0 and 1 938# endif 939# if !defined(_LIBCPP_BUILDING_LIBRARY) 940# define _LIBCPP_EXTERN_TEMPLATE(...) 941# endif 942#endif 943 944#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 945#define _LIBCPP_EXTERN_TEMPLATE(...) 946#define _LIBCPP_EXTERN_TEMPLATE2(...) 947#endif 948 949#ifndef _LIBCPP_EXTERN_TEMPLATE 950#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 951#endif 952 953#ifndef _LIBCPP_EXTERN_TEMPLATE2 954#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 955#endif 956 957#if defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__) 958#define _LIBCPP_NONUNIQUE_RTTI_BIT (1ULL << 63) 959#endif 960 961#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 962 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 963#define _LIBCPP_LOCALE__L_EXTENSIONS 1 964#endif 965 966#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 967// Most unix variants have catopen. These are the specific ones that don't. 968# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 969# define _LIBCPP_HAS_CATOPEN 1 970# endif 971#endif 972 973#ifdef __FreeBSD__ 974#define _DECLARE_C99_LDBL_MATH 1 975#endif 976 977// If we are getting operator new from the MSVC CRT, then allocation overloads 978// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 979#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 980# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 981#elif defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_NO_VCRUNTIME) 982# define _LIBCPP_DEFER_NEW_TO_VCRUNTIME 983# if !defined(__cpp_aligned_new) 984 // We're defering to Microsoft's STL to provide aligned new et al. We don't 985 // have it unless the language feature test macro is defined. 986# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 987# endif 988#endif 989 990#if defined(__APPLE__) 991# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 992 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 993# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 994# endif 995#endif // defined(__APPLE__) 996 997#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 998 (defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 999 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606)) 1000# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 1001#endif 1002 1003#if defined(__APPLE__) || defined(__FreeBSD__) 1004#define _LIBCPP_HAS_DEFAULTRUNELOCALE 1005#endif 1006 1007#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 1008#define _LIBCPP_WCTYPE_IS_MASK 1009#endif 1010 1011#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) 1012#define _LIBCPP_NO_HAS_CHAR8_T 1013#endif 1014 1015// Deprecation macros. 1016// Deprecations warnings are only enabled when _LIBCPP_ENABLE_DEPRECATION_WARNINGS is defined. 1017#if defined(_LIBCPP_ENABLE_DEPRECATION_WARNINGS) 1018# if __has_attribute(deprecated) 1019# define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 1020# elif _LIBCPP_STD_VER > 11 1021# define _LIBCPP_DEPRECATED [[deprecated]] 1022# else 1023# define _LIBCPP_DEPRECATED 1024# endif 1025#else 1026# define _LIBCPP_DEPRECATED 1027#endif 1028 1029#if !defined(_LIBCPP_CXX03_LANG) 1030# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 1031#else 1032# define _LIBCPP_DEPRECATED_IN_CXX11 1033#endif 1034 1035#if _LIBCPP_STD_VER >= 14 1036# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 1037#else 1038# define _LIBCPP_DEPRECATED_IN_CXX14 1039#endif 1040 1041#if _LIBCPP_STD_VER >= 17 1042# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 1043#else 1044# define _LIBCPP_DEPRECATED_IN_CXX17 1045#endif 1046 1047#if _LIBCPP_STD_VER <= 11 1048# define _LIBCPP_EXPLICIT_AFTER_CXX11 1049#else 1050# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1051#endif 1052 1053#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1054# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1055#else 1056# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1057#endif 1058 1059#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1060# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1061#else 1062# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1063#endif 1064 1065#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1066# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1067#else 1068# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1069#endif 1070 1071// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 1072// NODISCARD macros to the correct attribute. 1073#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1074# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 1075#elif defined(_LIBCPP_COMPILER_CLANG) && !defined(_LIBCPP_CXX03_LANG) 1076# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 1077#else 1078// We can't use GCC's [[gnu::warn_unused_result]] and 1079// __attribute__((warn_unused_result)), because GCC does not silence them via 1080// (void) cast. 1081# define _LIBCPP_NODISCARD_ATTRIBUTE 1082#endif 1083 1084// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1085// specified as such as an extension. 1086#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1087# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1088#else 1089# define _LIBCPP_NODISCARD_EXT 1090#endif 1091 1092#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1093 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1094# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1095#else 1096# define _LIBCPP_NODISCARD_AFTER_CXX17 1097#endif 1098 1099#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1100# define _LIBCPP_INLINE_VAR inline 1101#else 1102# define _LIBCPP_INLINE_VAR 1103#endif 1104 1105#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1106# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 1107#else 1108# define _LIBCPP_EXPLICIT_MOVE(x) (x) 1109#endif 1110 1111#ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG 1112#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1113#define _LIBCPP_CONSTEXPR_IF_NODEBUG 1114#else 1115#define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1116#endif 1117#endif 1118 1119#ifndef _LIBCPP_HAS_NO_ASAN 1120_LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 1121 const void *, const void *, const void *, const void *); 1122#endif 1123 1124// Try to find out if RTTI is disabled. 1125// g++ and cl.exe have RTTI on by default and define a macro when it is. 1126// g++ only defines the macro in 4.3.2 and onwards. 1127#if !defined(_LIBCPP_NO_RTTI) 1128# if defined(__GNUC__) && \ 1129 ((__GNUC__ >= 5) || \ 1130 (__GNUC__ == 4 && (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && \ 1131 !defined(__GXX_RTTI) 1132# define _LIBCPP_NO_RTTI 1133# elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1134# define _LIBCPP_NO_RTTI 1135# endif 1136#endif 1137 1138#ifndef _LIBCPP_WEAK 1139#define _LIBCPP_WEAK __attribute__((__weak__)) 1140#endif 1141 1142// Thread API 1143#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1144 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1145 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1146 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1147# if defined(__FreeBSD__) || \ 1148 defined(__Fuchsia__) || \ 1149 defined(__NetBSD__) || \ 1150 defined(__linux__) || \ 1151 defined(__GNU__) || \ 1152 defined(__APPLE__) || \ 1153 defined(__CloudABI__) || \ 1154 defined(__sun__) || \ 1155 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1156# define _LIBCPP_HAS_THREAD_API_PTHREAD 1157# elif defined(_LIBCPP_WIN32API) 1158# define _LIBCPP_HAS_THREAD_API_WIN32 1159# else 1160# error "No thread API" 1161# endif // _LIBCPP_HAS_THREAD_API 1162#endif // _LIBCPP_HAS_NO_THREADS 1163 1164#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1165#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1166 _LIBCPP_HAS_NO_THREADS is not defined. 1167#endif 1168 1169#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1170#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1171 _LIBCPP_HAS_NO_THREADS is defined. 1172#endif 1173 1174#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1175#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1176 _LIBCPP_HAS_NO_THREADS is defined. 1177#endif 1178 1179// Systems that use capability-based security (FreeBSD with Capsicum, 1180// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1181// Functions like open(), rename(), unlink() and stat() should not be 1182// used, as they attempt to access the global filesystem namespace. 1183#ifdef __CloudABI__ 1184#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1185#endif 1186 1187// CloudABI is intended for running networked services. Processes do not 1188// have standard input and output channels. 1189#ifdef __CloudABI__ 1190#define _LIBCPP_HAS_NO_STDIN 1191#define _LIBCPP_HAS_NO_STDOUT 1192#endif 1193 1194#if defined(__BIONIC__) || defined(__CloudABI__) || \ 1195 defined(__Fuchsia__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1196#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1197#endif 1198 1199// Thread-unsafe functions such as strtok() and localtime() 1200// are not available. 1201#ifdef __CloudABI__ 1202#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1203#endif 1204 1205#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1206# define _LIBCPP_HAS_C_ATOMIC_IMP 1207#elif _GNUC_VER > 407 1208# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1209#endif 1210 1211#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \ 1212 || defined(_LIBCPP_HAS_NO_THREADS) 1213#define _LIBCPP_HAS_NO_ATOMIC_HEADER 1214#endif 1215 1216#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1217#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1218#endif 1219 1220#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1221# if defined(__clang__) && __has_attribute(acquire_capability) 1222# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1223# endif 1224#endif 1225 1226#if __has_attribute(require_constant_initialization) 1227# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1228#else 1229# define _LIBCPP_SAFE_STATIC 1230#endif 1231 1232#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1233#define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1234#endif 1235 1236#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1237# if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1238# define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1239# endif 1240#endif 1241 1242#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1243# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1244 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1245# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1246 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1247#else 1248# define _LIBCPP_DIAGNOSE_WARNING(...) 1249# define _LIBCPP_DIAGNOSE_ERROR(...) 1250#endif 1251 1252// Use a function like macro to imply that it must be followed by a semicolon 1253#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1254# define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1255#elif __has_cpp_attribute(clang::fallthrough) 1256# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1257#elif __has_attribute(fallthough) || _GNUC_VER >= 700 1258# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1259#else 1260# define _LIBCPP_FALLTHROUGH() ((void)0) 1261#endif 1262 1263#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1264 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1265# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1266#else 1267# define _LIBCPP_DECLSPEC_EMPTY_BASES 1268#endif 1269 1270#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1271#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1272#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1273#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1274#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1275#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1276 1277#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1278#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1279#endif 1280 1281#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1282#define _LIBCPP_HAS_NO_IS_AGGREGATE 1283#endif 1284 1285#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1286#define _LIBCPP_HAS_NO_COROUTINES 1287#endif 1288 1289// FIXME: Correct this macro when either (A) a feature test macro for the 1290// spaceship operator is provided, or (B) a compiler provides a complete 1291// implementation. 1292#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1293 1294// Decide whether to use availability macros. 1295#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1296 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1297 __has_feature(attribute_availability_with_strict) && \ 1298 __has_feature(attribute_availability_in_templates) 1299# ifdef __APPLE__ 1300# define _LIBCPP_USE_AVAILABILITY_APPLE 1301# endif 1302#endif 1303 1304// Define availability macros. 1305#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1306# define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1307 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1308 __attribute__((availability(ios,strict,introduced=10.0))) \ 1309 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1310 __attribute__((availability(watchos,strict,introduced=3.0))) 1311# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS \ 1312 __attribute__((availability(macosx,strict,introduced=10.14))) \ 1313 __attribute__((availability(ios,strict,introduced=12.0))) \ 1314 __attribute__((availability(tvos,strict,introduced=12.0))) \ 1315 __attribute__((availability(watchos,strict,introduced=5.0))) 1316# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS \ 1317 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1318# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST \ 1319 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1320# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1321 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1322 __attribute__((availability(ios,strict,introduced=10.0))) \ 1323 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1324 __attribute__((availability(watchos,strict,introduced=3.0))) 1325# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1326 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1327 __attribute__((availability(ios,strict,introduced=10.0))) \ 1328 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1329 __attribute__((availability(watchos,strict,introduced=3.0))) 1330# define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1331 __attribute__((availability(ios,strict,introduced=6.0))) 1332# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1333 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1334 __attribute__((availability(ios,strict,introduced=7.0))) 1335# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1336 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1337 __attribute__((availability(ios,strict,introduced=7.0))) 1338# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1339 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1340 __attribute__((availability(ios,strict,introduced=7.0))) 1341#else 1342# define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1343# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1344# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1345# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1346# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1347# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1348# define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1349# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1350# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1351# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1352#endif 1353 1354// Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1355#ifdef _LIBCPP_NO_EXCEPTIONS 1356# define _LIBCPP_AVAILABILITY_FUTURE 1357# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1358# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS 1359# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS 1360#else 1361# define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1362# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1363# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1364# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1365#endif 1366 1367// The stream API was dropped and re-added in the dylib shipped on macOS 1368// and iOS. We can only assume the dylib to provide these definitions for 1369// macosx >= 10.9 and ios >= 7.0. Otherwise, the definitions are available 1370// from the headers, but not from the dylib. Explicit instantiation 1371// declarations for streams exist conditionally to this; if we provide 1372// an explicit instantiation declaration and we try to deploy to a dylib 1373// that does not provide those symbols, we'll get a load-time error. 1374#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1375 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1376 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1377 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1378 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1379# define _LIBCPP_DO_NOT_ASSUME_STREAMS_EXPLICIT_INSTANTIATION_IN_DYLIB 1380#endif 1381 1382#if defined(_LIBCPP_COMPILER_IBM) 1383#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1384#endif 1385 1386#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1387# define _LIBCPP_PUSH_MACROS 1388# define _LIBCPP_POP_MACROS 1389#else 1390 // Don't warn about macro conflicts when we can restore them at the 1391 // end of the header. 1392# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1393# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1394# endif 1395# if defined(_LIBCPP_COMPILER_MSVC) 1396# define _LIBCPP_PUSH_MACROS \ 1397 __pragma(push_macro("min")) \ 1398 __pragma(push_macro("max")) 1399# define _LIBCPP_POP_MACROS \ 1400 __pragma(pop_macro("min")) \ 1401 __pragma(pop_macro("max")) 1402# else 1403# define _LIBCPP_PUSH_MACROS \ 1404 _Pragma("push_macro(\"min\")") \ 1405 _Pragma("push_macro(\"max\")") 1406# define _LIBCPP_POP_MACROS \ 1407 _Pragma("pop_macro(\"min\")") \ 1408 _Pragma("pop_macro(\"max\")") 1409# endif 1410#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1411 1412#ifndef _LIBCPP_NO_AUTO_LINK 1413# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1414# if defined(_DLL) 1415# pragma comment(lib, "c++.lib") 1416# else 1417# pragma comment(lib, "libc++.lib") 1418# endif 1419# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1420#endif // _LIBCPP_NO_AUTO_LINK 1421 1422#endif // __cplusplus 1423 1424#endif // _LIBCPP_CONFIG 1425