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#ifndef _LIBCPP_CXX03_LANG 357# define _LIBCPP_ALIGNOF(_Tp) alignof(_Tp) 358#elif defined(_LIBCPP_COMPILER_CLANG) 359# define _LIBCPP_ALIGNOF(_Tp) _Alignof(_Tp) 360#else 361// This definition is potentially buggy, but it's only taken with GCC in C++03, 362// which we barely support anyway. See llvm.org/PR39713 363# define _LIBCPP_ALIGNOF(_Tp) __alignof(_Tp) 364#endif 365 366#define _LIBCPP_PREFERRED_ALIGNOF(_Tp) __alignof(_Tp) 367 368#if defined(_LIBCPP_COMPILER_CLANG) 369 370// _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for 371// _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility. 372#if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 373 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2)) || \ 374 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 375#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 376#endif 377 378#if __has_feature(cxx_alignas) 379# define _ALIGNAS_TYPE(x) alignas(x) 380# define _ALIGNAS(x) alignas(x) 381#else 382# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 383# define _ALIGNAS(x) __attribute__((__aligned__(x))) 384#endif 385 386#if __cplusplus < 201103L 387typedef __char16_t char16_t; 388typedef __char32_t char32_t; 389#endif 390 391#if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS) 392#define _LIBCPP_NO_EXCEPTIONS 393#endif 394 395#if !(__has_feature(cxx_rtti)) && !defined(_LIBCPP_NO_RTTI) 396#define _LIBCPP_NO_RTTI 397#endif 398 399#if !(__has_feature(cxx_strong_enums)) 400#define _LIBCPP_HAS_NO_STRONG_ENUMS 401#endif 402 403#if !(__has_feature(cxx_decltype)) 404#define _LIBCPP_HAS_NO_DECLTYPE 405#endif 406 407#if __has_feature(cxx_attributes) 408# define _LIBCPP_NORETURN [[noreturn]] 409#else 410# define _LIBCPP_NORETURN __attribute__ ((noreturn)) 411#endif 412 413#if !(__has_feature(cxx_lambdas)) 414#define _LIBCPP_HAS_NO_LAMBDAS 415#endif 416 417#if !(__has_feature(cxx_nullptr)) 418# if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 419# define nullptr __nullptr 420# else 421# define _LIBCPP_HAS_NO_NULLPTR 422# endif 423#endif 424 425#if !(__has_feature(cxx_rvalue_references)) 426#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 427#endif 428 429#if !(__has_feature(cxx_auto_type)) 430#define _LIBCPP_HAS_NO_AUTO_TYPE 431#endif 432 433#if !(__has_feature(cxx_variadic_templates)) 434#define _LIBCPP_HAS_NO_VARIADICS 435#endif 436 437#if !(__has_feature(cxx_generalized_initializers)) 438#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 439#endif 440 441#if __has_feature(is_base_of) 442#define _LIBCPP_HAS_IS_BASE_OF 443#endif 444 445#if __has_feature(is_final) 446#define _LIBCPP_HAS_IS_FINAL 447#endif 448 449// Objective-C++ features (opt-in) 450#if __has_feature(objc_arc) 451#define _LIBCPP_HAS_OBJC_ARC 452#endif 453 454#if __has_feature(objc_arc_weak) 455#define _LIBCPP_HAS_OBJC_ARC_WEAK 456#endif 457 458#if !(__has_feature(cxx_constexpr)) 459#define _LIBCPP_HAS_NO_CONSTEXPR 460#endif 461 462#if !(__has_feature(cxx_relaxed_constexpr)) 463#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 464#endif 465 466#if !(__has_feature(cxx_variable_templates)) 467#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 468#endif 469 470#if !(__has_feature(cxx_noexcept)) 471#define _LIBCPP_HAS_NO_NOEXCEPT 472#endif 473 474#if __has_feature(underlying_type) 475#define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 476#endif 477 478#if __has_feature(is_literal) 479#define _LIBCPP_IS_LITERAL(T) __is_literal(T) 480#endif 481 482#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 483#define _LIBCPP_HAS_NO_ASAN 484#endif 485 486// Allow for build-time disabling of unsigned integer sanitization 487#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 488#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 489#endif 490 491#if __has_builtin(__builtin_launder) 492#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 493#endif 494 495#if !__is_identifier(__has_unique_object_representations) 496#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 497#endif 498 499#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 500 501// No apple compilers support ""d and ""y at this time. 502#if _LIBCPP_CLANG_VER < 800 || defined(__apple_build_version__) 503#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS 504#endif 505 506#elif defined(_LIBCPP_COMPILER_GCC) 507 508#define _ALIGNAS(x) __attribute__((__aligned__(x))) 509#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 510 511#define _LIBCPP_NORETURN __attribute__((noreturn)) 512 513#if _GNUC_VER >= 407 514#define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 515#define _LIBCPP_IS_LITERAL(T) __is_literal_type(T) 516#define _LIBCPP_HAS_IS_FINAL 517#endif 518 519#if defined(__GNUC__) && _GNUC_VER >= 403 520#define _LIBCPP_HAS_IS_BASE_OF 521#endif 522 523#if !__EXCEPTIONS && !defined(_LIBCPP_NO_EXCEPTIONS) 524#define _LIBCPP_NO_EXCEPTIONS 525#endif 526 527// constexpr was added to GCC in 4.6. 528#if _GNUC_VER < 406 529# define _LIBCPP_HAS_NO_CONSTEXPR 530// Can only use constexpr in c++11 mode. 531#elif !defined(__GXX_EXPERIMENTAL_CXX0X__) && __cplusplus < 201103L 532# define _LIBCPP_HAS_NO_CONSTEXPR 533#endif 534 535// Determine if GCC supports relaxed constexpr 536#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 537#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 538#endif 539 540// GCC 5 will support variable templates 541#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 542#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 543#endif 544 545#ifndef __GXX_EXPERIMENTAL_CXX0X__ 546 547#define _LIBCPP_HAS_NO_DECLTYPE 548#define _LIBCPP_HAS_NO_NULLPTR 549#define _LIBCPP_HAS_NO_UNICODE_CHARS 550#define _LIBCPP_HAS_NO_VARIADICS 551#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 552#define _LIBCPP_HAS_NO_STRONG_ENUMS 553#define _LIBCPP_HAS_NO_NOEXCEPT 554 555#else // __GXX_EXPERIMENTAL_CXX0X__ 556 557#if _GNUC_VER < 403 558#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 559#endif 560 561 562#if _GNUC_VER < 404 563#define _LIBCPP_HAS_NO_DECLTYPE 564#define _LIBCPP_HAS_NO_UNICODE_CHARS 565#define _LIBCPP_HAS_NO_VARIADICS 566#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 567#endif // _GNUC_VER < 404 568 569#if _GNUC_VER < 406 570#define _LIBCPP_HAS_NO_NOEXCEPT 571#define _LIBCPP_HAS_NO_NULLPTR 572#endif 573 574#endif // __GXX_EXPERIMENTAL_CXX0X__ 575 576#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 577#define _LIBCPP_HAS_NO_ASAN 578#endif 579 580#if _GNUC_VER >= 700 581#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 582#endif 583 584#if _GNUC_VER >= 700 585#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 586#endif 587 588#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 589 590#elif defined(_LIBCPP_COMPILER_MSVC) 591 592#define _LIBCPP_TOSTRING2(x) #x 593#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 594#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 595 596#if _MSC_VER < 1900 597#error "MSVC versions prior to Visual Studio 2015 are not supported" 598#endif 599 600#define _LIBCPP_HAS_IS_BASE_OF 601#define _LIBCPP_HAS_NO_CONSTEXPR 602#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 603#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 604#define _LIBCPP_HAS_NO_NOEXCEPT 605#define __alignof__ __alignof 606#define _LIBCPP_NORETURN __declspec(noreturn) 607#define _ALIGNAS(x) __declspec(align(x)) 608#define _ALIGNAS_TYPE(x) alignas(x) 609#define _LIBCPP_HAS_NO_VARIADICS 610 611#define _LIBCPP_WEAK 612 613#define _LIBCPP_HAS_NO_ASAN 614 615#define _LIBCPP_ALWAYS_INLINE __forceinline 616 617#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 618 619#elif defined(_LIBCPP_COMPILER_IBM) 620 621#define _ALIGNAS(x) __attribute__((__aligned__(x))) 622#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 623#define _ATTRIBUTE(x) __attribute__((x)) 624#define _LIBCPP_NORETURN __attribute__((noreturn)) 625 626#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 627#define _LIBCPP_HAS_NO_NOEXCEPT 628#define _LIBCPP_HAS_NO_NULLPTR 629#define _LIBCPP_HAS_NO_UNICODE_CHARS 630#define _LIBCPP_HAS_IS_BASE_OF 631#define _LIBCPP_HAS_IS_FINAL 632#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 633 634#if defined(_AIX) 635#define __MULTILOCALE_API 636#endif 637 638#define _LIBCPP_HAS_NO_ASAN 639 640#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 641 642#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 643 644#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 645 646#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 647 648#ifdef _DLL 649# define _LIBCPP_CRT_FUNC __declspec(dllimport) 650#else 651# define _LIBCPP_CRT_FUNC 652#endif 653 654#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 655# define _LIBCPP_DLL_VIS 656# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 657# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 658# define _LIBCPP_OVERRIDABLE_FUNC_VIS 659# define _LIBCPP_EXPORTED_FROM_ABI 660#elif defined(_LIBCPP_BUILDING_LIBRARY) 661# define _LIBCPP_DLL_VIS __declspec(dllexport) 662# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 663# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 664# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 665# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 666#else 667# define _LIBCPP_DLL_VIS __declspec(dllimport) 668# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 669# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 670# define _LIBCPP_OVERRIDABLE_FUNC_VIS 671# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 672#endif 673 674#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 675#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 676#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 677#define _LIBCPP_HIDDEN 678#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 679#define _LIBCPP_TEMPLATE_VIS 680#define _LIBCPP_ENUM_VIS 681 682#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 683 684#ifndef _LIBCPP_HIDDEN 685# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 686# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 687# else 688# define _LIBCPP_HIDDEN 689# endif 690#endif 691 692#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 693# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 694// The inline should be removed once PR32114 is resolved 695# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 696# else 697# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 698# endif 699#endif 700 701#ifndef _LIBCPP_FUNC_VIS 702# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 703# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 704# else 705# define _LIBCPP_FUNC_VIS 706# endif 707#endif 708 709#ifndef _LIBCPP_TYPE_VIS 710# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 711# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 712# else 713# define _LIBCPP_TYPE_VIS 714# endif 715#endif 716 717#ifndef _LIBCPP_TEMPLATE_VIS 718# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 719# if __has_attribute(__type_visibility__) 720# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 721# else 722# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 723# endif 724# else 725# define _LIBCPP_TEMPLATE_VIS 726# endif 727#endif 728 729#ifndef _LIBCPP_EXPORTED_FROM_ABI 730# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 731# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 732# else 733# define _LIBCPP_EXPORTED_FROM_ABI 734# endif 735#endif 736 737#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 738#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 739#endif 740 741#ifndef _LIBCPP_EXCEPTION_ABI 742# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 743# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 744# else 745# define _LIBCPP_EXCEPTION_ABI 746# endif 747#endif 748 749#ifndef _LIBCPP_ENUM_VIS 750# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 751# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 752# else 753# define _LIBCPP_ENUM_VIS 754# endif 755#endif 756 757#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 758# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 759# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 760# else 761# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 762# endif 763#endif 764 765#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 766#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 767#endif 768 769#if __has_attribute(internal_linkage) 770# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 771#else 772# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 773#endif 774 775#if __has_attribute(exclude_from_explicit_instantiation) 776# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 777#else 778 // Try to approximate the effect of exclude_from_explicit_instantiation 779 // (which is that entities are not assumed to be provided by explicit 780 // template instantitations in the dylib) by always inlining those entities. 781# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 782#endif 783 784#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 785# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 786# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 787# else 788# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 789# endif 790#endif 791 792#ifndef _LIBCPP_HIDE_FROM_ABI 793# if _LIBCPP_HIDE_FROM_ABI_PER_TU 794# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 795# else 796# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 797# endif 798#endif 799 800#ifdef _LIBCPP_BUILDING_LIBRARY 801# if _LIBCPP_ABI_VERSION > 1 802# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 803# else 804# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 805# endif 806#else 807# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 808#endif 809 810// Just so we can migrate to the new macros gradually. 811#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 812 813// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 814#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 815#define _LIBCPP_END_NAMESPACE_STD } } 816#define _VSTD std::_LIBCPP_ABI_NAMESPACE 817_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 818 819#if _LIBCPP_STD_VER >= 17 820#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 821 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 822#else 823#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 824 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 825#endif 826 827#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 828 _LIBCPP_END_NAMESPACE_STD } } 829 830#define _VSTD_FS _VSTD::__fs::filesystem 831 832#ifndef _LIBCPP_PREFERRED_OVERLOAD 833# if __has_attribute(__enable_if__) 834# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 835# endif 836#endif 837 838#ifndef _LIBCPP_HAS_NO_NOEXCEPT 839# define _NOEXCEPT noexcept 840# define _NOEXCEPT_(x) noexcept(x) 841#else 842# define _NOEXCEPT throw() 843# define _NOEXCEPT_(x) 844#endif 845 846#if defined(_LIBCPP_DEBUG_USE_EXCEPTIONS) 847# if !defined(_LIBCPP_DEBUG) 848# error cannot use _LIBCPP_DEBUG_USE_EXCEPTIONS unless _LIBCPP_DEBUG is defined 849# endif 850# ifdef _LIBCPP_HAS_NO_NOEXCEPT 851# define _NOEXCEPT_DEBUG 852# define _NOEXCEPT_DEBUG_(x) 853# else 854# define _NOEXCEPT_DEBUG noexcept(false) 855# define _NOEXCEPT_DEBUG_(x) noexcept(false) 856# endif 857#else 858# define _NOEXCEPT_DEBUG _NOEXCEPT 859# define _NOEXCEPT_DEBUG_(x) _NOEXCEPT_(x) 860#endif 861 862#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 863typedef unsigned short char16_t; 864typedef unsigned int char32_t; 865#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 866 867#ifndef __SIZEOF_INT128__ 868#define _LIBCPP_HAS_NO_INT128 869#endif 870 871#ifdef _LIBCPP_CXX03_LANG 872# if __has_extension(c_static_assert) 873# define static_assert(__b, __m) _Static_assert(__b, __m) 874# else 875extern "C++" { 876template <bool> struct __static_assert_test; 877template <> struct __static_assert_test<true> {}; 878template <unsigned> struct __static_assert_check {}; 879} 880# define static_assert(__b, __m) \ 881 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \ 882 _LIBCPP_CONCAT(__t, __LINE__) 883# endif // __has_extension(c_static_assert) 884#endif // _LIBCPP_CXX03_LANG 885 886#ifdef _LIBCPP_HAS_NO_DECLTYPE 887// GCC 4.6 provides __decltype in all standard modes. 888# if __has_keyword(__decltype) || _LIBCPP_CLANG_VER >= 304 || _GNUC_VER >= 406 889# define decltype(__x) __decltype(__x) 890# else 891# define decltype(__x) __typeof__(__x) 892# endif 893#endif 894 895#ifdef _LIBCPP_HAS_NO_CONSTEXPR 896# define _LIBCPP_CONSTEXPR 897#else 898# define _LIBCPP_CONSTEXPR constexpr 899#endif 900 901#ifdef _LIBCPP_CXX03_LANG 902# define _LIBCPP_DEFAULT {} 903#else 904# define _LIBCPP_DEFAULT = default; 905#endif 906 907#ifdef _LIBCPP_CXX03_LANG 908# define _LIBCPP_EQUAL_DELETE 909#else 910# define _LIBCPP_EQUAL_DELETE = delete 911#endif 912 913#ifdef __GNUC__ 914# define _NOALIAS __attribute__((__malloc__)) 915#else 916# define _NOALIAS 917#endif 918 919#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 920 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 921# define _LIBCPP_EXPLICIT explicit 922#else 923# define _LIBCPP_EXPLICIT 924#endif 925 926#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 927#define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 928#endif 929 930#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 931# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 932# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 933 __lx __v_; \ 934 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 935 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 936 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 937 }; 938#else // _LIBCPP_HAS_NO_STRONG_ENUMS 939# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 940# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 941#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 942 943#ifdef _LIBCPP_DEBUG 944# if _LIBCPP_DEBUG == 0 945# define _LIBCPP_DEBUG_LEVEL 1 946# elif _LIBCPP_DEBUG == 1 947# define _LIBCPP_DEBUG_LEVEL 2 948# else 949# error Supported values for _LIBCPP_DEBUG are 0 and 1 950# endif 951# if !defined(_LIBCPP_BUILDING_LIBRARY) 952# define _LIBCPP_EXTERN_TEMPLATE(...) 953# endif 954#endif 955 956#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 957#define _LIBCPP_EXTERN_TEMPLATE(...) 958#define _LIBCPP_EXTERN_TEMPLATE2(...) 959#endif 960 961#ifndef _LIBCPP_EXTERN_TEMPLATE 962#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 963#endif 964 965#ifndef _LIBCPP_EXTERN_TEMPLATE2 966#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 967#endif 968 969#if defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__) 970#define _LIBCPP_NONUNIQUE_RTTI_BIT (1ULL << 63) 971#endif 972 973#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 974 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 975#define _LIBCPP_LOCALE__L_EXTENSIONS 1 976#endif 977 978#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 979// Most unix variants have catopen. These are the specific ones that don't. 980# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 981# define _LIBCPP_HAS_CATOPEN 1 982# endif 983#endif 984 985#ifdef __FreeBSD__ 986#define _DECLARE_C99_LDBL_MATH 1 987#endif 988 989// If we are getting operator new from the MSVC CRT, then allocation overloads 990// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 991#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 992# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 993#elif defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_NO_VCRUNTIME) 994# define _LIBCPP_DEFER_NEW_TO_VCRUNTIME 995# if !defined(__cpp_aligned_new) 996 // We're defering to Microsoft's STL to provide aligned new et al. We don't 997 // have it unless the language feature test macro is defined. 998# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 999# endif 1000#endif 1001 1002#if defined(__APPLE__) 1003# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 1004 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 1005# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 1006# endif 1007#endif // defined(__APPLE__) 1008 1009#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 1010 (defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 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 <= 17 || !defined(__cpp_char8_t) 1024#define _LIBCPP_NO_HAS_CHAR8_T 1025#endif 1026 1027// Deprecation macros. 1028// Deprecations warnings are only enabled when _LIBCPP_ENABLE_DEPRECATION_WARNINGS is defined. 1029#if defined(_LIBCPP_ENABLE_DEPRECATION_WARNINGS) 1030# if __has_attribute(deprecated) 1031# define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 1032# elif _LIBCPP_STD_VER > 11 1033# define _LIBCPP_DEPRECATED [[deprecated]] 1034# else 1035# define _LIBCPP_DEPRECATED 1036# endif 1037#else 1038# define _LIBCPP_DEPRECATED 1039#endif 1040 1041#if !defined(_LIBCPP_CXX03_LANG) 1042# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 1043#else 1044# define _LIBCPP_DEPRECATED_IN_CXX11 1045#endif 1046 1047#if _LIBCPP_STD_VER >= 14 1048# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 1049#else 1050# define _LIBCPP_DEPRECATED_IN_CXX14 1051#endif 1052 1053#if _LIBCPP_STD_VER >= 17 1054# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 1055#else 1056# define _LIBCPP_DEPRECATED_IN_CXX17 1057#endif 1058 1059#if _LIBCPP_STD_VER <= 11 1060# define _LIBCPP_EXPLICIT_AFTER_CXX11 1061#else 1062# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1063#endif 1064 1065#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1066# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1067#else 1068# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1069#endif 1070 1071#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1072# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1073#else 1074# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1075#endif 1076 1077#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1078# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1079#else 1080# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1081#endif 1082 1083// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 1084// NODISCARD macros to the correct attribute. 1085#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1086# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 1087#elif defined(_LIBCPP_COMPILER_CLANG) && !defined(_LIBCPP_CXX03_LANG) 1088# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 1089#else 1090// We can't use GCC's [[gnu::warn_unused_result]] and 1091// __attribute__((warn_unused_result)), because GCC does not silence them via 1092// (void) cast. 1093# define _LIBCPP_NODISCARD_ATTRIBUTE 1094#endif 1095 1096// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1097// specified as such as an extension. 1098#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1099# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1100#else 1101# define _LIBCPP_NODISCARD_EXT 1102#endif 1103 1104#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1105 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1106# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1107#else 1108# define _LIBCPP_NODISCARD_AFTER_CXX17 1109#endif 1110 1111#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1112# define _LIBCPP_INLINE_VAR inline 1113#else 1114# define _LIBCPP_INLINE_VAR 1115#endif 1116 1117#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1118# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 1119#else 1120# define _LIBCPP_EXPLICIT_MOVE(x) (x) 1121#endif 1122 1123#ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG 1124#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1125#define _LIBCPP_CONSTEXPR_IF_NODEBUG 1126#else 1127#define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1128#endif 1129#endif 1130 1131#ifndef _LIBCPP_HAS_NO_ASAN 1132_LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 1133 const void *, const void *, const void *, const void *); 1134#endif 1135 1136// Try to find out if RTTI is disabled. 1137// g++ and cl.exe have RTTI on by default and define a macro when it is. 1138// g++ only defines the macro in 4.3.2 and onwards. 1139#if !defined(_LIBCPP_NO_RTTI) 1140# if defined(__GNUC__) && \ 1141 ((__GNUC__ >= 5) || \ 1142 (__GNUC__ == 4 && (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && \ 1143 !defined(__GXX_RTTI) 1144# define _LIBCPP_NO_RTTI 1145# elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1146# define _LIBCPP_NO_RTTI 1147# endif 1148#endif 1149 1150#ifndef _LIBCPP_WEAK 1151#define _LIBCPP_WEAK __attribute__((__weak__)) 1152#endif 1153 1154// Thread API 1155#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1156 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1157 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1158 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1159# if defined(__FreeBSD__) || \ 1160 defined(__Fuchsia__) || \ 1161 defined(__NetBSD__) || \ 1162 defined(__linux__) || \ 1163 defined(__GNU__) || \ 1164 defined(__APPLE__) || \ 1165 defined(__CloudABI__) || \ 1166 defined(__sun__) || \ 1167 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1168# define _LIBCPP_HAS_THREAD_API_PTHREAD 1169# elif defined(_LIBCPP_WIN32API) 1170# define _LIBCPP_HAS_THREAD_API_WIN32 1171# else 1172# error "No thread API" 1173# endif // _LIBCPP_HAS_THREAD_API 1174#endif // _LIBCPP_HAS_NO_THREADS 1175 1176#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1177#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1178 _LIBCPP_HAS_NO_THREADS is not defined. 1179#endif 1180 1181#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1182#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1183 _LIBCPP_HAS_NO_THREADS is defined. 1184#endif 1185 1186#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1187#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1188 _LIBCPP_HAS_NO_THREADS is defined. 1189#endif 1190 1191// Systems that use capability-based security (FreeBSD with Capsicum, 1192// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1193// Functions like open(), rename(), unlink() and stat() should not be 1194// used, as they attempt to access the global filesystem namespace. 1195#ifdef __CloudABI__ 1196#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1197#endif 1198 1199// CloudABI is intended for running networked services. Processes do not 1200// have standard input and output channels. 1201#ifdef __CloudABI__ 1202#define _LIBCPP_HAS_NO_STDIN 1203#define _LIBCPP_HAS_NO_STDOUT 1204#endif 1205 1206#if defined(__BIONIC__) || defined(__CloudABI__) || \ 1207 defined(__Fuchsia__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1208#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1209#endif 1210 1211// Thread-unsafe functions such as strtok() and localtime() 1212// are not available. 1213#ifdef __CloudABI__ 1214#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1215#endif 1216 1217#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1218# define _LIBCPP_HAS_C_ATOMIC_IMP 1219#elif _GNUC_VER > 407 1220# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1221#endif 1222 1223#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \ 1224 || defined(_LIBCPP_HAS_NO_THREADS) 1225#define _LIBCPP_HAS_NO_ATOMIC_HEADER 1226#endif 1227 1228#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1229#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1230#endif 1231 1232#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1233# if defined(__clang__) && __has_attribute(acquire_capability) 1234// Work around the attribute handling in clang. When both __declspec and 1235// __attribute__ are present, the processing goes awry preventing the definition 1236// of the types. 1237# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1238# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1239# endif 1240# endif 1241#endif 1242 1243#if __has_attribute(require_constant_initialization) 1244# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1245#else 1246# define _LIBCPP_SAFE_STATIC 1247#endif 1248 1249#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1250#define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1251#endif 1252 1253#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1254# if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1255# define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1256# endif 1257#endif 1258 1259#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1260# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1261 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1262# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1263 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1264#else 1265# define _LIBCPP_DIAGNOSE_WARNING(...) 1266# define _LIBCPP_DIAGNOSE_ERROR(...) 1267#endif 1268 1269// Use a function like macro to imply that it must be followed by a semicolon 1270#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1271# define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1272#elif __has_cpp_attribute(clang::fallthrough) 1273# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1274#elif __has_attribute(fallthough) || _GNUC_VER >= 700 1275# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1276#else 1277# define _LIBCPP_FALLTHROUGH() ((void)0) 1278#endif 1279 1280#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1281 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1282# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1283#else 1284# define _LIBCPP_DECLSPEC_EMPTY_BASES 1285#endif 1286 1287#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1288#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1289#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1290#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1291#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1292#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1293 1294#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1295#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1296#endif 1297 1298#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1299#define _LIBCPP_HAS_NO_IS_AGGREGATE 1300#endif 1301 1302#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1303#define _LIBCPP_HAS_NO_COROUTINES 1304#endif 1305 1306// FIXME: Correct this macro when either (A) a feature test macro for the 1307// spaceship operator is provided, or (B) a compiler provides a complete 1308// implementation. 1309#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1310 1311// Decide whether to use availability macros. 1312#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1313 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1314 __has_feature(attribute_availability_with_strict) && \ 1315 __has_feature(attribute_availability_in_templates) 1316# ifdef __APPLE__ 1317# define _LIBCPP_USE_AVAILABILITY_APPLE 1318# endif 1319#endif 1320 1321// Define availability macros. 1322#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1323# define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1324 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1325 __attribute__((availability(ios,strict,introduced=10.0))) \ 1326 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1327 __attribute__((availability(watchos,strict,introduced=3.0))) 1328# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS \ 1329 __attribute__((availability(macosx,strict,introduced=10.14))) \ 1330 __attribute__((availability(ios,strict,introduced=12.0))) \ 1331 __attribute__((availability(tvos,strict,introduced=12.0))) \ 1332 __attribute__((availability(watchos,strict,introduced=5.0))) 1333# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS \ 1334 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1335# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST \ 1336 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1337# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1338 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1339 __attribute__((availability(ios,strict,introduced=10.0))) \ 1340 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1341 __attribute__((availability(watchos,strict,introduced=3.0))) 1342# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1343 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1344 __attribute__((availability(ios,strict,introduced=10.0))) \ 1345 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1346 __attribute__((availability(watchos,strict,introduced=3.0))) 1347# define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1348 __attribute__((availability(ios,strict,introduced=6.0))) 1349# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1350 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1351 __attribute__((availability(ios,strict,introduced=7.0))) 1352# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1353 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1354 __attribute__((availability(ios,strict,introduced=7.0))) 1355# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1356 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1357 __attribute__((availability(ios,strict,introduced=7.0))) 1358#else 1359# define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1360# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1361# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1362# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1363# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1364# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1365# define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1366# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1367# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1368# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1369#endif 1370 1371// Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1372#ifdef _LIBCPP_NO_EXCEPTIONS 1373# define _LIBCPP_AVAILABILITY_FUTURE 1374# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1375# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS 1376# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS 1377#else 1378# define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1379# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1380# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1381# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1382#endif 1383 1384// The stream API was dropped and re-added in the dylib shipped on macOS 1385// and iOS. We can only assume the dylib to provide these definitions for 1386// macosx >= 10.9 and ios >= 7.0. Otherwise, the definitions are available 1387// from the headers, but not from the dylib. Explicit instantiation 1388// declarations for streams exist conditionally to this; if we provide 1389// an explicit instantiation declaration and we try to deploy to a dylib 1390// that does not provide those symbols, we'll get a load-time error. 1391#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1392 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1393 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1394 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1395 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1396# define _LIBCPP_DO_NOT_ASSUME_STREAMS_EXPLICIT_INSTANTIATION_IN_DYLIB 1397#endif 1398 1399#if defined(_LIBCPP_COMPILER_IBM) 1400#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1401#endif 1402 1403#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1404# define _LIBCPP_PUSH_MACROS 1405# define _LIBCPP_POP_MACROS 1406#else 1407 // Don't warn about macro conflicts when we can restore them at the 1408 // end of the header. 1409# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1410# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1411# endif 1412# if defined(_LIBCPP_COMPILER_MSVC) 1413# define _LIBCPP_PUSH_MACROS \ 1414 __pragma(push_macro("min")) \ 1415 __pragma(push_macro("max")) 1416# define _LIBCPP_POP_MACROS \ 1417 __pragma(pop_macro("min")) \ 1418 __pragma(pop_macro("max")) 1419# else 1420# define _LIBCPP_PUSH_MACROS \ 1421 _Pragma("push_macro(\"min\")") \ 1422 _Pragma("push_macro(\"max\")") 1423# define _LIBCPP_POP_MACROS \ 1424 _Pragma("pop_macro(\"min\")") \ 1425 _Pragma("pop_macro(\"max\")") 1426# endif 1427#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1428 1429#ifndef _LIBCPP_NO_AUTO_LINK 1430# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1431# if defined(_DLL) 1432# pragma comment(lib, "c++.lib") 1433# else 1434# pragma comment(lib, "libc++.lib") 1435# endif 1436# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1437#endif // _LIBCPP_NO_AUTO_LINK 1438 1439#define _LIBCPP_UNUSED_VAR(x) ((void)(x)) 1440 1441#endif // __cplusplus 1442 1443#endif // _LIBCPP_CONFIG 1444