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