1// -*- C++ -*- 2//===--------------------------- __config ---------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_CONFIG 11#define _LIBCPP_CONFIG 12 13#if defined(_MSC_VER) && !defined(__clang__) 14# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 15# define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 16# endif 17#endif 18 19#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 20#pragma GCC system_header 21#endif 22 23#ifdef __cplusplus 24 25#ifdef __GNUC__ 26# define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__) 27// The _GNUC_VER_NEW macro better represents the new GCC versioning scheme 28// introduced in GCC 5.0. 29# define _GNUC_VER_NEW (_GNUC_VER * 10 + __GNUC_PATCHLEVEL__) 30#else 31# define _GNUC_VER 0 32# define _GNUC_VER_NEW 0 33#endif 34 35#define _LIBCPP_VERSION 9000 36 37#ifndef _LIBCPP_ABI_VERSION 38# define _LIBCPP_ABI_VERSION 1 39#endif 40 41#ifndef __STDC_HOSTED__ 42# define _LIBCPP_FREESTANDING 43#endif 44 45#ifndef _LIBCPP_STD_VER 46# if __cplusplus <= 201103L 47# define _LIBCPP_STD_VER 11 48# elif __cplusplus <= 201402L 49# define _LIBCPP_STD_VER 14 50# elif __cplusplus <= 201703L 51# define _LIBCPP_STD_VER 17 52# else 53# define _LIBCPP_STD_VER 18 // current year, or date of c++2a ratification 54# endif 55#endif // _LIBCPP_STD_VER 56 57#if defined(__ELF__) 58# define _LIBCPP_OBJECT_FORMAT_ELF 1 59#elif defined(__MACH__) 60# define _LIBCPP_OBJECT_FORMAT_MACHO 1 61#elif defined(_WIN32) 62# define _LIBCPP_OBJECT_FORMAT_COFF 1 63#elif defined(__wasm__) 64# define _LIBCPP_OBJECT_FORMAT_WASM 1 65#else 66# error Unknown object file format 67#endif 68 69#if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 70// Change short string representation so that string data starts at offset 0, 71// improving its alignment in some cases. 72# define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 73// Fix deque iterator type in order to support incomplete types. 74# define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 75// Fix undefined behavior in how std::list stores its linked nodes. 76# define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB 77// Fix undefined behavior in how __tree stores its end and parent nodes. 78# define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB 79// Fix undefined behavior in how __hash_table stores its pointer types. 80# define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB 81# define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB 82# define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE 83// Don't use a nullptr_t simulation type in C++03 instead using C++11 nullptr 84// provided under the alternate keyword __nullptr, which changes the mangling 85// of nullptr_t. This option is ABI incompatible with GCC in C++03 mode. 86# define _LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR 87// Define the `pointer_safety` enum as a C++11 strongly typed enumeration 88// instead of as a class simulating an enum. If this option is enabled 89// `pointer_safety` and `get_pointer_safety()` will no longer be available 90// in C++03. 91# define _LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE 92// Define a key function for `bad_function_call` in the library, to centralize 93// its vtable and typeinfo to libc++ rather than having all other libraries 94// using that class define their own copies. 95# define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 96// Enable optimized version of __do_get_(un)signed which avoids redundant copies. 97# define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET 98// Use the smallest possible integer type to represent the index of the variant. 99// Previously libc++ used "unsigned int" exclusively. 100# define _LIBCPP_ABI_VARIANT_INDEX_TYPE_OPTIMIZATION 101// Unstable attempt to provide a more optimized std::function 102# define _LIBCPP_ABI_OPTIMIZED_FUNCTION 103// All the regex constants must be distinct and nonzero. 104# define _LIBCPP_ABI_REGEX_CONSTANTS_NONZERO 105#elif _LIBCPP_ABI_VERSION == 1 106# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 107// Enable compiling copies of now inline methods into the dylib to support 108// applications compiled against older libraries. This is unnecessary with 109// COFF dllexport semantics, since dllexport forces a non-inline definition 110// of inline functions to be emitted anyway. Our own non-inline copy would 111// conflict with the dllexport-emitted copy, so we disable it. 112# define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS 113# endif 114// Feature macros for disabling pre ABI v1 features. All of these options 115// are deprecated. 116# if defined(__FreeBSD__) 117# define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR 118# endif 119#endif 120 121#ifdef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 122#error "_LIBCPP_TRIVIAL_PAIR_COPY_CTOR" is no longer supported. \ 123 use _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR instead 124#endif 125 126#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y 127#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) 128 129#ifndef _LIBCPP_ABI_NAMESPACE 130# define _LIBCPP_ABI_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION) 131#endif 132 133#if __cplusplus < 201103L 134#define _LIBCPP_CXX03_LANG 135#endif 136 137#ifndef __has_attribute 138#define __has_attribute(__x) 0 139#endif 140 141#ifndef __has_builtin 142#define __has_builtin(__x) 0 143#endif 144 145#ifndef __has_extension 146#define __has_extension(__x) 0 147#endif 148 149#ifndef __has_feature 150#define __has_feature(__x) 0 151#endif 152 153#ifndef __has_cpp_attribute 154#define __has_cpp_attribute(__x) 0 155#endif 156 157// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by 158// the compiler and '1' otherwise. 159#ifndef __is_identifier 160#define __is_identifier(__x) 1 161#endif 162 163#ifndef __has_declspec_attribute 164#define __has_declspec_attribute(__x) 0 165#endif 166 167#define __has_keyword(__x) !(__is_identifier(__x)) 168 169#ifndef __has_include 170#define __has_include(...) 0 171#endif 172 173#if defined(__clang__) 174# define _LIBCPP_COMPILER_CLANG 175# ifndef __apple_build_version__ 176# define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__) 177# endif 178#elif defined(__GNUC__) 179# define _LIBCPP_COMPILER_GCC 180#elif defined(_MSC_VER) 181# define _LIBCPP_COMPILER_MSVC 182#elif defined(__IBMCPP__) 183# define _LIBCPP_COMPILER_IBM 184#endif 185 186#ifndef _LIBCPP_CLANG_VER 187#define _LIBCPP_CLANG_VER 0 188#endif 189 190#if defined(_LIBCPP_COMPILER_GCC) && __cplusplus < 201103L 191#error "libc++ does not support using GCC with C++03. Please enable C++11" 192#endif 193 194// FIXME: ABI detection should be done via compiler builtin macros. This 195// is just a placeholder until Clang implements such macros. For now assume 196// that Windows compilers pretending to be MSVC++ target the Microsoft ABI, 197// and allow the user to explicitly specify the ABI to handle cases where this 198// heuristic falls short. 199#if defined(_LIBCPP_ABI_FORCE_ITANIUM) && defined(_LIBCPP_ABI_FORCE_MICROSOFT) 200# error "Only one of _LIBCPP_ABI_FORCE_ITANIUM and _LIBCPP_ABI_FORCE_MICROSOFT can be defined" 201#elif defined(_LIBCPP_ABI_FORCE_ITANIUM) 202# define _LIBCPP_ABI_ITANIUM 203#elif defined(_LIBCPP_ABI_FORCE_MICROSOFT) 204# define _LIBCPP_ABI_MICROSOFT 205#else 206# if defined(_WIN32) && defined(_MSC_VER) 207# define _LIBCPP_ABI_MICROSOFT 208# else 209# define _LIBCPP_ABI_ITANIUM 210# endif 211#endif 212 213#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_NO_VCRUNTIME) 214# define _LIBCPP_ABI_VCRUNTIME 215#endif 216 217// Need to detect which libc we're using if we're on Linux. 218#if defined(__linux__) 219# include <features.h> 220# if defined(__GLIBC_PREREQ) 221# define _LIBCPP_GLIBC_PREREQ(a, b) __GLIBC_PREREQ(a, b) 222# else 223# define _LIBCPP_GLIBC_PREREQ(a, b) 0 224# endif // defined(__GLIBC_PREREQ) 225#endif // defined(__linux__) 226 227#ifdef __LITTLE_ENDIAN__ 228# if __LITTLE_ENDIAN__ 229# define _LIBCPP_LITTLE_ENDIAN 230# endif // __LITTLE_ENDIAN__ 231#endif // __LITTLE_ENDIAN__ 232 233#ifdef __BIG_ENDIAN__ 234# if __BIG_ENDIAN__ 235# define _LIBCPP_BIG_ENDIAN 236# endif // __BIG_ENDIAN__ 237#endif // __BIG_ENDIAN__ 238 239#ifdef __BYTE_ORDER__ 240# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 241# define _LIBCPP_LITTLE_ENDIAN 242# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 243# define _LIBCPP_BIG_ENDIAN 244# endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 245#endif // __BYTE_ORDER__ 246 247#ifdef __FreeBSD__ 248# include <sys/endian.h> 249# include <osreldate.h> 250# if _BYTE_ORDER == _LITTLE_ENDIAN 251# define _LIBCPP_LITTLE_ENDIAN 252# else // _BYTE_ORDER == _LITTLE_ENDIAN 253# define _LIBCPP_BIG_ENDIAN 254# endif // _BYTE_ORDER == _LITTLE_ENDIAN 255# ifndef __LONG_LONG_SUPPORTED 256# define _LIBCPP_HAS_NO_LONG_LONG 257# endif // __LONG_LONG_SUPPORTED 258#endif // __FreeBSD__ 259 260#ifdef __NetBSD__ 261# include <sys/endian.h> 262# if _BYTE_ORDER == _LITTLE_ENDIAN 263# define _LIBCPP_LITTLE_ENDIAN 264# else // _BYTE_ORDER == _LITTLE_ENDIAN 265# define _LIBCPP_BIG_ENDIAN 266# endif // _BYTE_ORDER == _LITTLE_ENDIAN 267# define _LIBCPP_HAS_QUICK_EXIT 268#endif // __NetBSD__ 269 270#if defined(_WIN32) 271# define _LIBCPP_WIN32API 272# define _LIBCPP_LITTLE_ENDIAN 273# define _LIBCPP_SHORT_WCHAR 1 274// Both MinGW and native MSVC provide a "MSVC"-like environment 275# define _LIBCPP_MSVCRT_LIKE 276// If mingw not explicitly detected, assume using MS C runtime only if 277// a MS compatibility version is specified. 278# if defined(_MSC_VER) && !defined(__MINGW32__) 279# define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 280# endif 281# if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 282# define _LIBCPP_HAS_BITSCAN64 283# endif 284# define _LIBCPP_HAS_OPEN_WITH_WCHAR 285# if defined(_LIBCPP_MSVCRT) 286# define _LIBCPP_HAS_QUICK_EXIT 287# endif 288 289// Some CRT APIs are unavailable to store apps 290# if defined(WINAPI_FAMILY) 291# include <winapifamily.h> 292# if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 293 (!defined(WINAPI_PARTITION_SYSTEM) || \ 294 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 295# define _LIBCPP_WINDOWS_STORE_APP 296# endif 297# endif 298#endif // defined(_WIN32) 299 300#ifdef __sun__ 301# include <sys/isa_defs.h> 302# ifdef _LITTLE_ENDIAN 303# define _LIBCPP_LITTLE_ENDIAN 304# else 305# define _LIBCPP_BIG_ENDIAN 306# endif 307#endif // __sun__ 308 309#if defined(__CloudABI__) 310 // Certain architectures provide arc4random(). Prefer using 311 // arc4random() over /dev/{u,}random to make it possible to obtain 312 // random data even when using sandboxing mechanisms such as chroots, 313 // Capsicum, etc. 314# define _LIBCPP_USING_ARC4_RANDOM 315#elif defined(__Fuchsia__) || defined(__wasi__) 316# define _LIBCPP_USING_GETENTROPY 317#elif defined(__native_client__) 318 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, 319 // including accesses to the special files under /dev. C++11's 320 // std::random_device is instead exposed through a NaCl syscall. 321# define _LIBCPP_USING_NACL_RANDOM 322#elif defined(_LIBCPP_WIN32API) 323# define _LIBCPP_USING_WIN32_RANDOM 324#else 325# define _LIBCPP_USING_DEV_RANDOM 326#endif 327 328#if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 329# include <endian.h> 330# if __BYTE_ORDER == __LITTLE_ENDIAN 331# define _LIBCPP_LITTLE_ENDIAN 332# elif __BYTE_ORDER == __BIG_ENDIAN 333# define _LIBCPP_BIG_ENDIAN 334# else // __BYTE_ORDER == __BIG_ENDIAN 335# error unable to determine endian 336# endif 337#endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 338 339#if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 340# define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 341#else 342# define _LIBCPP_NO_CFI 343#endif 344 345#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 346# if defined(__FreeBSD__) 347# define _LIBCPP_HAS_QUICK_EXIT 348# define _LIBCPP_HAS_C11_FEATURES 349# elif defined(__Fuchsia__) || defined(__wasi__) 350# define _LIBCPP_HAS_QUICK_EXIT 351# define _LIBCPP_HAS_TIMESPEC_GET 352# define _LIBCPP_HAS_C11_FEATURES 353# elif defined(__linux__) 354# if !defined(_LIBCPP_HAS_MUSL_LIBC) 355# if _LIBCPP_GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 356# define _LIBCPP_HAS_QUICK_EXIT 357# endif 358# if _LIBCPP_GLIBC_PREREQ(2, 17) 359# define _LIBCPP_HAS_C11_FEATURES 360# define _LIBCPP_HAS_TIMESPEC_GET 361# endif 362# else // defined(_LIBCPP_HAS_MUSL_LIBC) 363# define _LIBCPP_HAS_QUICK_EXIT 364# define _LIBCPP_HAS_TIMESPEC_GET 365# define _LIBCPP_HAS_C11_FEATURES 366# endif 367# endif // __linux__ 368#endif 369 370#ifndef _LIBCPP_CXX03_LANG 371# define _LIBCPP_ALIGNOF(_Tp) alignof(_Tp) 372#elif defined(_LIBCPP_COMPILER_CLANG) 373# define _LIBCPP_ALIGNOF(_Tp) _Alignof(_Tp) 374#else 375// This definition is potentially buggy, but it's only taken with GCC in C++03, 376// which we barely support anyway. See llvm.org/PR39713 377# define _LIBCPP_ALIGNOF(_Tp) __alignof(_Tp) 378#endif 379 380#define _LIBCPP_PREFERRED_ALIGNOF(_Tp) __alignof(_Tp) 381 382#if defined(_LIBCPP_COMPILER_CLANG) 383 384// _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for 385// _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility. 386#if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 387 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2)) || \ 388 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 389#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 390#endif 391 392#if __has_feature(cxx_alignas) 393# define _ALIGNAS_TYPE(x) alignas(x) 394# define _ALIGNAS(x) alignas(x) 395#else 396# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 397# define _ALIGNAS(x) __attribute__((__aligned__(x))) 398#endif 399 400#if __cplusplus < 201103L 401typedef __char16_t char16_t; 402typedef __char32_t char32_t; 403#endif 404 405#if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS) 406#define _LIBCPP_NO_EXCEPTIONS 407#endif 408 409#if !(__has_feature(cxx_rtti)) && !defined(_LIBCPP_NO_RTTI) 410#define _LIBCPP_NO_RTTI 411#endif 412 413#if !(__has_feature(cxx_strong_enums)) 414#define _LIBCPP_HAS_NO_STRONG_ENUMS 415#endif 416 417#if __has_feature(cxx_attributes) 418# define _LIBCPP_NORETURN [[noreturn]] 419#else 420# define _LIBCPP_NORETURN __attribute__ ((noreturn)) 421#endif 422 423#if !(__has_feature(cxx_lambdas)) 424#define _LIBCPP_HAS_NO_LAMBDAS 425#endif 426 427#if !(__has_feature(cxx_nullptr)) 428# if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 429# define nullptr __nullptr 430# else 431# define _LIBCPP_HAS_NO_NULLPTR 432# endif 433#endif 434 435#if !(__has_feature(cxx_rvalue_references)) 436#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 437#endif 438 439#if !(__has_feature(cxx_auto_type)) 440#define _LIBCPP_HAS_NO_AUTO_TYPE 441#endif 442 443#if !(__has_feature(cxx_variadic_templates)) 444#define _LIBCPP_HAS_NO_VARIADICS 445#endif 446 447// Objective-C++ features (opt-in) 448#if __has_feature(objc_arc) 449#define _LIBCPP_HAS_OBJC_ARC 450#endif 451 452#if __has_feature(objc_arc_weak) 453#define _LIBCPP_HAS_OBJC_ARC_WEAK 454#endif 455 456#if !(__has_feature(cxx_relaxed_constexpr)) 457#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 458#endif 459 460#if !(__has_feature(cxx_variable_templates)) 461#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 462#endif 463 464#if !(__has_feature(cxx_noexcept)) 465#define _LIBCPP_HAS_NO_NOEXCEPT 466#endif 467 468#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 469#define _LIBCPP_HAS_NO_ASAN 470#endif 471 472// Allow for build-time disabling of unsigned integer sanitization 473#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 474#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 475#endif 476 477#if __has_builtin(__builtin_launder) 478#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 479#endif 480 481#if !__is_identifier(__has_unique_object_representations) 482#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 483#endif 484 485#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 486 487// No apple compilers support ""d and ""y at this time. 488#if _LIBCPP_CLANG_VER < 800 || defined(__apple_build_version__) 489#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS 490#endif 491 492#elif defined(_LIBCPP_COMPILER_GCC) 493 494#define _ALIGNAS(x) __attribute__((__aligned__(x))) 495#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 496 497#define _LIBCPP_NORETURN __attribute__((noreturn)) 498 499#if !__EXCEPTIONS && !defined(_LIBCPP_NO_EXCEPTIONS) 500#define _LIBCPP_NO_EXCEPTIONS 501#endif 502 503// Determine if GCC supports relaxed constexpr 504#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 505#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 506#endif 507 508// GCC 5 supports variable templates 509#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 510#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 511#endif 512 513#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 514#define _LIBCPP_HAS_NO_ASAN 515#endif 516 517#if _GNUC_VER >= 700 518#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 519#endif 520 521#if _GNUC_VER >= 700 522#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 523#endif 524 525#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 526 527#elif defined(_LIBCPP_COMPILER_MSVC) 528 529#define _LIBCPP_TOSTRING2(x) #x 530#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 531#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 532 533#if _MSC_VER < 1900 534#error "MSVC versions prior to Visual Studio 2015 are not supported" 535#endif 536 537#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 538#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 539#define __alignof__ __alignof 540#define _LIBCPP_NORETURN __declspec(noreturn) 541#define _ALIGNAS(x) __declspec(align(x)) 542#define _ALIGNAS_TYPE(x) alignas(x) 543 544#define _LIBCPP_WEAK 545 546#define _LIBCPP_HAS_NO_ASAN 547 548#define _LIBCPP_ALWAYS_INLINE __forceinline 549 550#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 551 552#elif defined(_LIBCPP_COMPILER_IBM) 553 554#define _ALIGNAS(x) __attribute__((__aligned__(x))) 555#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 556#define _ATTRIBUTE(x) __attribute__((x)) 557#define _LIBCPP_NORETURN __attribute__((noreturn)) 558 559#define _LIBCPP_HAS_NO_UNICODE_CHARS 560#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 561 562#if defined(_AIX) 563#define __MULTILOCALE_API 564#endif 565 566#define _LIBCPP_HAS_NO_ASAN 567 568#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 569 570#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 571 572#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 573 574#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 575 576#ifdef _DLL 577# define _LIBCPP_CRT_FUNC __declspec(dllimport) 578#else 579# define _LIBCPP_CRT_FUNC 580#endif 581 582#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 583# define _LIBCPP_DLL_VIS 584# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 585# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 586# define _LIBCPP_OVERRIDABLE_FUNC_VIS 587# define _LIBCPP_EXPORTED_FROM_ABI 588#elif defined(_LIBCPP_BUILDING_LIBRARY) 589# define _LIBCPP_DLL_VIS __declspec(dllexport) 590# if defined(__MINGW32__) 591# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 592# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 593# else 594# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 595# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 596# endif 597# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 598# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 599#else 600# define _LIBCPP_DLL_VIS __declspec(dllimport) 601# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 602# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 603# define _LIBCPP_OVERRIDABLE_FUNC_VIS 604# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 605#endif 606 607#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 608#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 609#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 610#define _LIBCPP_HIDDEN 611#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 612#define _LIBCPP_TEMPLATE_VIS 613#define _LIBCPP_ENUM_VIS 614 615#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 616 617#ifndef _LIBCPP_HIDDEN 618# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 619# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 620# else 621# define _LIBCPP_HIDDEN 622# endif 623#endif 624 625#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 626# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 627// The inline should be removed once PR32114 is resolved 628# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 629# else 630# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 631# endif 632#endif 633 634#ifndef _LIBCPP_FUNC_VIS 635# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 636# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 637# else 638# define _LIBCPP_FUNC_VIS 639# endif 640#endif 641 642#ifndef _LIBCPP_TYPE_VIS 643# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 644# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 645# else 646# define _LIBCPP_TYPE_VIS 647# endif 648#endif 649 650#ifndef _LIBCPP_TEMPLATE_VIS 651# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 652# if __has_attribute(__type_visibility__) 653# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 654# else 655# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 656# endif 657# else 658# define _LIBCPP_TEMPLATE_VIS 659# endif 660#endif 661 662#ifndef _LIBCPP_EXPORTED_FROM_ABI 663# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 664# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 665# else 666# define _LIBCPP_EXPORTED_FROM_ABI 667# endif 668#endif 669 670#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 671#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 672#endif 673 674#ifndef _LIBCPP_EXCEPTION_ABI 675# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 676# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 677# else 678# define _LIBCPP_EXCEPTION_ABI 679# endif 680#endif 681 682#ifndef _LIBCPP_ENUM_VIS 683# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 684# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 685# else 686# define _LIBCPP_ENUM_VIS 687# endif 688#endif 689 690#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 691# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 692# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 693# else 694# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 695# endif 696#endif 697 698#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 699#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 700#endif 701 702#if __has_attribute(internal_linkage) 703# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 704#else 705# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 706#endif 707 708#if __has_attribute(exclude_from_explicit_instantiation) 709# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 710#else 711 // Try to approximate the effect of exclude_from_explicit_instantiation 712 // (which is that entities are not assumed to be provided by explicit 713 // template instantiations in the dylib) by always inlining those entities. 714# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 715#endif 716 717#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 718# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 719# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 720# else 721# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 722# endif 723#endif 724 725#ifndef _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT 726# ifdef _LIBCPP_OBJECT_FORMAT_COFF // Windows binaries can't merge typeinfos. 727# define _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT 0 728#else 729// TODO: This isn't strictly correct on ELF platforms due to llvm.org/PR37398 730// And we should consider defaulting to OFF. 731# define _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT 1 732#endif 733#endif 734 735#ifndef _LIBCPP_HIDE_FROM_ABI 736# if _LIBCPP_HIDE_FROM_ABI_PER_TU 737# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 738# else 739# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 740# endif 741#endif 742 743#ifdef _LIBCPP_BUILDING_LIBRARY 744# if _LIBCPP_ABI_VERSION > 1 745# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 746# else 747# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 748# endif 749#else 750# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 751#endif 752 753// Just so we can migrate to the new macros gradually. 754#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 755 756// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 757#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 758#define _LIBCPP_END_NAMESPACE_STD } } 759#define _VSTD std::_LIBCPP_ABI_NAMESPACE 760_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 761 762#if _LIBCPP_STD_VER >= 17 763#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 764 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 765#else 766#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 767 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 768#endif 769 770#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 771 _LIBCPP_END_NAMESPACE_STD } } 772 773#define _VSTD_FS _VSTD::__fs::filesystem 774 775#ifndef _LIBCPP_PREFERRED_OVERLOAD 776# if __has_attribute(__enable_if__) 777# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 778# endif 779#endif 780 781#ifndef _LIBCPP_HAS_NO_NOEXCEPT 782# define _NOEXCEPT noexcept 783# define _NOEXCEPT_(x) noexcept(x) 784#else 785# define _NOEXCEPT throw() 786# define _NOEXCEPT_(x) 787#endif 788 789#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 790typedef unsigned short char16_t; 791typedef unsigned int char32_t; 792#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 793 794#ifndef __SIZEOF_INT128__ 795#define _LIBCPP_HAS_NO_INT128 796#endif 797 798#ifdef _LIBCPP_CXX03_LANG 799# define static_assert(...) _Static_assert(__VA_ARGS__) 800# define decltype(...) __decltype(__VA_ARGS__) 801#endif // _LIBCPP_CXX03_LANG 802 803#ifdef _LIBCPP_CXX03_LANG 804# define _LIBCPP_CONSTEXPR 805#else 806# define _LIBCPP_CONSTEXPR constexpr 807#endif 808 809#ifdef _LIBCPP_CXX03_LANG 810# define _LIBCPP_DEFAULT {} 811#else 812# define _LIBCPP_DEFAULT = default; 813#endif 814 815#ifdef _LIBCPP_CXX03_LANG 816# define _LIBCPP_EQUAL_DELETE 817#else 818# define _LIBCPP_EQUAL_DELETE = delete 819#endif 820 821#ifdef __GNUC__ 822# define _LIBCPP_NOALIAS __attribute__((__malloc__)) 823#else 824# define _LIBCPP_NOALIAS 825#endif 826 827#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 828 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 829# define _LIBCPP_EXPLICIT explicit 830#else 831# define _LIBCPP_EXPLICIT 832#endif 833 834#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 835#define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 836#endif 837 838#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 839# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 840# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 841 __lx __v_; \ 842 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 843 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 844 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 845 }; 846#else // _LIBCPP_HAS_NO_STRONG_ENUMS 847# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 848# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 849#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 850 851#ifdef _LIBCPP_DEBUG 852# if _LIBCPP_DEBUG == 0 853# define _LIBCPP_DEBUG_LEVEL 1 854# elif _LIBCPP_DEBUG == 1 855# define _LIBCPP_DEBUG_LEVEL 2 856# else 857# error Supported values for _LIBCPP_DEBUG are 0 and 1 858# endif 859# if !defined(_LIBCPP_BUILDING_LIBRARY) 860# define _LIBCPP_EXTERN_TEMPLATE(...) 861# endif 862#endif 863 864#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 865#define _LIBCPP_EXTERN_TEMPLATE(...) 866#define _LIBCPP_EXTERN_TEMPLATE2(...) 867#endif 868 869#ifndef _LIBCPP_EXTERN_TEMPLATE 870#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 871#endif 872 873#ifndef _LIBCPP_EXTERN_TEMPLATE2 874#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 875#endif 876 877#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 878 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 879#define _LIBCPP_LOCALE__L_EXTENSIONS 1 880#endif 881 882#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 883// Most unix variants have catopen. These are the specific ones that don't. 884# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 885# define _LIBCPP_HAS_CATOPEN 1 886# endif 887#endif 888 889#ifdef __FreeBSD__ 890#define _DECLARE_C99_LDBL_MATH 1 891#endif 892 893// If we are getting operator new from the MSVC CRT, then allocation overloads 894// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 895#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 896# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 897#elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) 898 // We're deferring to Microsoft's STL to provide aligned new et al. We don't 899 // have it unless the language feature test macro is defined. 900# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 901#endif 902 903#if defined(__APPLE__) 904# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 905 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 906# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 907# endif 908#endif // defined(__APPLE__) 909 910#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 911 (defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 912 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606)) 913# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 914#endif 915 916#if defined(__APPLE__) || defined(__FreeBSD__) 917#define _LIBCPP_HAS_DEFAULTRUNELOCALE 918#endif 919 920#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 921#define _LIBCPP_WCTYPE_IS_MASK 922#endif 923 924#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) 925#define _LIBCPP_NO_HAS_CHAR8_T 926#endif 927 928// Deprecation macros. 929// 930// Deprecations warnings are always enabled, except when users explicitly opt-out 931// by defining _LIBCPP_DISABLE_DEPRECATION_WARNINGS. 932#if !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) 933# if __has_attribute(deprecated) 934# define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 935# elif _LIBCPP_STD_VER > 11 936# define _LIBCPP_DEPRECATED [[deprecated]] 937# else 938# define _LIBCPP_DEPRECATED 939# endif 940#else 941# define _LIBCPP_DEPRECATED 942#endif 943 944#if !defined(_LIBCPP_CXX03_LANG) 945# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 946#else 947# define _LIBCPP_DEPRECATED_IN_CXX11 948#endif 949 950#if _LIBCPP_STD_VER >= 14 951# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 952#else 953# define _LIBCPP_DEPRECATED_IN_CXX14 954#endif 955 956#if _LIBCPP_STD_VER >= 17 957# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 958#else 959# define _LIBCPP_DEPRECATED_IN_CXX17 960#endif 961 962#if _LIBCPP_STD_VER <= 11 963# define _LIBCPP_EXPLICIT_AFTER_CXX11 964#else 965# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 966#endif 967 968#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 969# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 970#else 971# define _LIBCPP_CONSTEXPR_AFTER_CXX11 972#endif 973 974#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 975# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 976#else 977# define _LIBCPP_CONSTEXPR_AFTER_CXX14 978#endif 979 980#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 981# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 982#else 983# define _LIBCPP_CONSTEXPR_AFTER_CXX17 984#endif 985 986// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 987// NODISCARD macros to the correct attribute. 988#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 989# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 990#elif defined(_LIBCPP_COMPILER_CLANG) && !defined(_LIBCPP_CXX03_LANG) 991# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 992#else 993// We can't use GCC's [[gnu::warn_unused_result]] and 994// __attribute__((warn_unused_result)), because GCC does not silence them via 995// (void) cast. 996# define _LIBCPP_NODISCARD_ATTRIBUTE 997#endif 998 999// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1000// specified as such as an extension. 1001#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1002# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1003#else 1004# define _LIBCPP_NODISCARD_EXT 1005#endif 1006 1007#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1008 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1009# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1010#else 1011# define _LIBCPP_NODISCARD_AFTER_CXX17 1012#endif 1013 1014#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1015# define _LIBCPP_INLINE_VAR inline 1016#else 1017# define _LIBCPP_INLINE_VAR 1018#endif 1019 1020#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1021# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 1022#else 1023# define _LIBCPP_EXPLICIT_MOVE(x) (x) 1024#endif 1025 1026#ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG 1027#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1028#define _LIBCPP_CONSTEXPR_IF_NODEBUG 1029#else 1030#define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1031#endif 1032#endif 1033 1034#if __has_attribute(no_destroy) 1035# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__)) 1036#else 1037# define _LIBCPP_NO_DESTROY 1038#endif 1039 1040#ifndef _LIBCPP_HAS_NO_ASAN 1041_LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 1042 const void *, const void *, const void *, const void *); 1043#endif 1044 1045// Try to find out if RTTI is disabled. 1046// g++ and cl.exe have RTTI on by default and define a macro when it is. 1047// g++ only defines the macro in 4.3.2 and onwards. 1048#if !defined(_LIBCPP_NO_RTTI) 1049# if defined(__GNUC__) && \ 1050 ((__GNUC__ >= 5) || \ 1051 (__GNUC__ == 4 && (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && \ 1052 !defined(__GXX_RTTI) 1053# define _LIBCPP_NO_RTTI 1054# elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1055# define _LIBCPP_NO_RTTI 1056# endif 1057#endif 1058 1059#ifndef _LIBCPP_WEAK 1060#define _LIBCPP_WEAK __attribute__((__weak__)) 1061#endif 1062 1063// Thread API 1064#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1065 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1066 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1067 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1068# if defined(__FreeBSD__) || \ 1069 defined(__Fuchsia__) || \ 1070 defined(__wasi__) || \ 1071 defined(__NetBSD__) || \ 1072 defined(__linux__) || \ 1073 defined(__GNU__) || \ 1074 defined(__APPLE__) || \ 1075 defined(__CloudABI__) || \ 1076 defined(__sun__) || \ 1077 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1078# define _LIBCPP_HAS_THREAD_API_PTHREAD 1079# elif defined(_LIBCPP_WIN32API) 1080# define _LIBCPP_HAS_THREAD_API_WIN32 1081# else 1082# error "No thread API" 1083# endif // _LIBCPP_HAS_THREAD_API 1084#endif // _LIBCPP_HAS_NO_THREADS 1085 1086#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1087#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1088 _LIBCPP_HAS_NO_THREADS is not defined. 1089#endif 1090 1091#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1092#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1093 _LIBCPP_HAS_NO_THREADS is defined. 1094#endif 1095 1096#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1097#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1098 _LIBCPP_HAS_NO_THREADS is defined. 1099#endif 1100 1101// The Apple, glibc, and Bionic implementation of pthreads implements 1102// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 1103// mutexes have no destroy mechanism. 1104// TODO(EricWF): Enable this optimization on Apple and Bionic platforms after 1105// speaking to their respective stakeholders. 1106#if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) \ 1107 || defined(_LIBCPP_HAS_THREAD_API_WIN32) 1108# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 1109#endif 1110 1111// Destroying a condvar is a nop on Windows. 1112// TODO(EricWF): This is potentially true for some pthread implementations 1113// as well. 1114#if defined(_LIBCPP_HAS_THREAD_API_WIN32) 1115# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 1116#endif 1117 1118// Systems that use capability-based security (FreeBSD with Capsicum, 1119// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1120// Functions like open(), rename(), unlink() and stat() should not be 1121// used, as they attempt to access the global filesystem namespace. 1122#ifdef __CloudABI__ 1123#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1124#endif 1125 1126// CloudABI is intended for running networked services. Processes do not 1127// have standard input and output channels. 1128#ifdef __CloudABI__ 1129#define _LIBCPP_HAS_NO_STDIN 1130#define _LIBCPP_HAS_NO_STDOUT 1131#endif 1132 1133// Some systems do not provide gets() in their C library, for security reasons. 1134#ifndef _LIBCPP_C_HAS_NO_GETS 1135# if defined(_LIBCPP_MSVCRT) || \ 1136 (defined(__FreeBSD__) && __FreeBSD_version >= 1300043) 1137# define _LIBCPP_C_HAS_NO_GETS 1138# endif 1139#endif 1140 1141#if defined(__BIONIC__) || defined(__CloudABI__) || \ 1142 defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1143#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1144#endif 1145 1146// Thread-unsafe functions such as strtok() and localtime() 1147// are not available. 1148#ifdef __CloudABI__ 1149#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1150#endif 1151 1152#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1153# define _LIBCPP_HAS_C_ATOMIC_IMP 1154#elif defined(_LIBCPP_COMPILER_GCC) 1155# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1156#endif 1157 1158#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && \ 1159 !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) && \ 1160 !defined(_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP)) \ 1161 || defined(_LIBCPP_HAS_NO_THREADS) 1162# define _LIBCPP_HAS_NO_ATOMIC_HEADER 1163#else 1164# ifndef _LIBCPP_ATOMIC_FLAG_TYPE 1165# define _LIBCPP_ATOMIC_FLAG_TYPE bool 1166# endif 1167# ifdef _LIBCPP_FREESTANDING 1168# define _LIBCPP_ATOMIC_ONLY_USE_BUILTINS 1169# endif 1170#endif 1171 1172#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1173#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1174#endif 1175 1176#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1177# if defined(__clang__) && __has_attribute(acquire_capability) 1178// Work around the attribute handling in clang. When both __declspec and 1179// __attribute__ are present, the processing goes awry preventing the definition 1180// of the types. 1181# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1182# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1183# endif 1184# endif 1185#endif 1186 1187#if __has_attribute(require_constant_initialization) 1188# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1189#else 1190# define _LIBCPP_SAFE_STATIC 1191#endif 1192 1193#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1194#define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1195#endif 1196 1197#if !__has_builtin(__builtin_is_constant_evaluated) && _GNUC_VER < 900 1198#define _LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED 1199#endif 1200 1201#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1202# if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1203# define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1204# endif 1205#endif 1206 1207#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1208# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1209 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1210# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1211 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1212#else 1213# define _LIBCPP_DIAGNOSE_WARNING(...) 1214# define _LIBCPP_DIAGNOSE_ERROR(...) 1215#endif 1216 1217// Use a function like macro to imply that it must be followed by a semicolon 1218#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1219# define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1220#elif __has_cpp_attribute(clang::fallthrough) 1221# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1222#elif __has_attribute(fallthough) || _GNUC_VER >= 700 1223# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1224#else 1225# define _LIBCPP_FALLTHROUGH() ((void)0) 1226#endif 1227 1228#if __has_attribute(__nodebug__) 1229#define _LIBCPP_NODEBUG __attribute__((__nodebug__)) 1230#else 1231#define _LIBCPP_NODEBUG 1232#endif 1233 1234#ifndef _LIBCPP_NODEBUG_TYPE 1235#if __has_attribute(__nodebug__) && \ 1236 (defined(_LIBCPP_COMPILER_CLANG) && _LIBCPP_CLANG_VER >= 900) 1237#define _LIBCPP_NODEBUG_TYPE __attribute__((nodebug)) 1238#else 1239#define _LIBCPP_NODEBUG_TYPE 1240#endif 1241#endif // !defined(_LIBCPP_NODEBUG_TYPE) 1242 1243#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1244 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1245# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1246#else 1247# define _LIBCPP_DECLSPEC_EMPTY_BASES 1248#endif 1249 1250#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1251#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1252#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1253#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1254#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1255#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1256 1257#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1258#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1259#endif 1260 1261#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1262#define _LIBCPP_HAS_NO_IS_AGGREGATE 1263#endif 1264 1265#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1266#define _LIBCPP_HAS_NO_COROUTINES 1267#endif 1268 1269// FIXME: Correct this macro when either (A) a feature test macro for the 1270// spaceship operator is provided, or (B) a compiler provides a complete 1271// implementation. 1272#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1273 1274// Decide whether to use availability macros. 1275#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1276 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1277 __has_feature(attribute_availability_with_strict) && \ 1278 __has_feature(attribute_availability_in_templates) && \ 1279 __has_extension(pragma_clang_attribute_external_declaration) 1280# ifdef __APPLE__ 1281# define _LIBCPP_USE_AVAILABILITY_APPLE 1282# endif 1283#endif 1284 1285// Define availability macros. 1286#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1287# define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1288 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1289 __attribute__((availability(ios,strict,introduced=10.0))) \ 1290 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1291 __attribute__((availability(watchos,strict,introduced=3.0))) 1292# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS \ 1293 __attribute__((availability(macosx,strict,introduced=10.14))) \ 1294 __attribute__((availability(ios,strict,introduced=12.0))) \ 1295 __attribute__((availability(tvos,strict,introduced=12.0))) \ 1296 __attribute__((availability(watchos,strict,introduced=5.0))) 1297# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS \ 1298 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1299# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST \ 1300 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1301# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1302 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1303 __attribute__((availability(ios,strict,introduced=10.0))) \ 1304 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1305 __attribute__((availability(watchos,strict,introduced=3.0))) 1306# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1307 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1308 __attribute__((availability(ios,strict,introduced=10.0))) \ 1309 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1310 __attribute__((availability(watchos,strict,introduced=3.0))) 1311# define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1312 __attribute__((availability(ios,strict,introduced=6.0))) 1313# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1314 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1315 __attribute__((availability(ios,strict,introduced=7.0))) 1316# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1317 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1318 __attribute__((availability(ios,strict,introduced=7.0))) 1319# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1320 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1321 __attribute__((availability(ios,strict,introduced=7.0))) 1322# define _LIBCPP_AVAILABILITY_FILESYSTEM \ 1323 __attribute__((availability(macosx,strict,introduced=10.15))) \ 1324 __attribute__((availability(ios,strict,introduced=13.0))) \ 1325 __attribute__((availability(tvos,strict,introduced=13.0))) \ 1326 __attribute__((availability(watchos,strict,introduced=6.0))) 1327# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH \ 1328 _Pragma("clang attribute push(__attribute__((availability(macosx,strict,introduced=10.15))), apply_to=any(function,record))") \ 1329 _Pragma("clang attribute push(__attribute__((availability(ios,strict,introduced=13.0))), apply_to=any(function,record))") \ 1330 _Pragma("clang attribute push(__attribute__((availability(tvos,strict,introduced=13.0))), apply_to=any(function,record))") \ 1331 _Pragma("clang attribute push(__attribute__((availability(watchos,strict,introduced=6.0))), apply_to=any(function,record))") 1332# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP \ 1333 _Pragma("clang attribute pop") \ 1334 _Pragma("clang attribute pop") \ 1335 _Pragma("clang attribute pop") \ 1336 _Pragma("clang attribute pop") 1337#else 1338# define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1339# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1340# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1341# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1342# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1343# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1344# define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1345# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1346# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1347# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1348# define _LIBCPP_AVAILABILITY_FILESYSTEM 1349# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH 1350# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP 1351#endif 1352 1353// Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1354#ifdef _LIBCPP_NO_EXCEPTIONS 1355# define _LIBCPP_AVAILABILITY_FUTURE 1356# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1357# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS 1358# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS 1359#else 1360# define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1361# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1362# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1363# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1364#endif 1365 1366// The stream API was dropped and re-added in the dylib shipped on macOS 1367// and iOS. We can only assume the dylib to provide these definitions for 1368// macosx >= 10.9 and ios >= 7.0. Otherwise, the definitions are available 1369// from the headers, but not from the dylib. Explicit instantiation 1370// declarations for streams exist conditionally to this; if we provide 1371// an explicit instantiation declaration and we try to deploy to a dylib 1372// that does not provide those symbols, we'll get a load-time error. 1373#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1374 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1375 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1376 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1377 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1378# define _LIBCPP_DO_NOT_ASSUME_STREAMS_EXPLICIT_INSTANTIATION_IN_DYLIB 1379#endif 1380 1381#if defined(_LIBCPP_COMPILER_IBM) 1382#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1383#endif 1384 1385#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1386# define _LIBCPP_PUSH_MACROS 1387# define _LIBCPP_POP_MACROS 1388#else 1389 // Don't warn about macro conflicts when we can restore them at the 1390 // end of the header. 1391# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1392# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1393# endif 1394# if defined(_LIBCPP_COMPILER_MSVC) 1395# define _LIBCPP_PUSH_MACROS \ 1396 __pragma(push_macro("min")) \ 1397 __pragma(push_macro("max")) 1398# define _LIBCPP_POP_MACROS \ 1399 __pragma(pop_macro("min")) \ 1400 __pragma(pop_macro("max")) 1401# else 1402# define _LIBCPP_PUSH_MACROS \ 1403 _Pragma("push_macro(\"min\")") \ 1404 _Pragma("push_macro(\"max\")") 1405# define _LIBCPP_POP_MACROS \ 1406 _Pragma("pop_macro(\"min\")") \ 1407 _Pragma("pop_macro(\"max\")") 1408# endif 1409#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1410 1411#ifndef _LIBCPP_NO_AUTO_LINK 1412# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1413# if defined(_DLL) 1414# pragma comment(lib, "c++.lib") 1415# else 1416# pragma comment(lib, "libc++.lib") 1417# endif 1418# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1419#endif // _LIBCPP_NO_AUTO_LINK 1420 1421#define _LIBCPP_UNUSED_VAR(x) ((void)(x)) 1422 1423#endif // __cplusplus 1424 1425#endif // _LIBCPP_CONFIG 1426