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 11000 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#if defined(_LIBCPP_COMPILER_GCC) && __cplusplus < 201103L 187#error "libc++ does not support using GCC with C++03. Please enable C++11" 188#endif 189 190// FIXME: ABI detection should be done via compiler builtin macros. This 191// is just a placeholder until Clang implements such macros. For now assume 192// that Windows compilers pretending to be MSVC++ target the Microsoft ABI, 193// and allow the user to explicitly specify the ABI to handle cases where this 194// heuristic falls short. 195#if defined(_LIBCPP_ABI_FORCE_ITANIUM) && defined(_LIBCPP_ABI_FORCE_MICROSOFT) 196# error "Only one of _LIBCPP_ABI_FORCE_ITANIUM and _LIBCPP_ABI_FORCE_MICROSOFT can be defined" 197#elif defined(_LIBCPP_ABI_FORCE_ITANIUM) 198# define _LIBCPP_ABI_ITANIUM 199#elif defined(_LIBCPP_ABI_FORCE_MICROSOFT) 200# define _LIBCPP_ABI_MICROSOFT 201#else 202# if defined(_WIN32) && defined(_MSC_VER) 203# define _LIBCPP_ABI_MICROSOFT 204# else 205# define _LIBCPP_ABI_ITANIUM 206# endif 207#endif 208 209#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_NO_VCRUNTIME) 210# define _LIBCPP_ABI_VCRUNTIME 211#endif 212 213// Need to detect which libc we're using if we're on Linux. 214#if defined(__linux__) 215# include <features.h> 216# if defined(__GLIBC_PREREQ) 217# define _LIBCPP_GLIBC_PREREQ(a, b) __GLIBC_PREREQ(a, b) 218# else 219# define _LIBCPP_GLIBC_PREREQ(a, b) 0 220# endif // defined(__GLIBC_PREREQ) 221#endif // defined(__linux__) 222 223#ifdef __LITTLE_ENDIAN__ 224# if __LITTLE_ENDIAN__ 225# define _LIBCPP_LITTLE_ENDIAN 226# endif // __LITTLE_ENDIAN__ 227#endif // __LITTLE_ENDIAN__ 228 229#ifdef __BIG_ENDIAN__ 230# if __BIG_ENDIAN__ 231# define _LIBCPP_BIG_ENDIAN 232# endif // __BIG_ENDIAN__ 233#endif // __BIG_ENDIAN__ 234 235#ifdef __BYTE_ORDER__ 236# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 237# define _LIBCPP_LITTLE_ENDIAN 238# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 239# define _LIBCPP_BIG_ENDIAN 240# endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 241#endif // __BYTE_ORDER__ 242 243#ifdef __FreeBSD__ 244# include <sys/endian.h> 245# include <osreldate.h> 246# if _BYTE_ORDER == _LITTLE_ENDIAN 247# define _LIBCPP_LITTLE_ENDIAN 248# else // _BYTE_ORDER == _LITTLE_ENDIAN 249# define _LIBCPP_BIG_ENDIAN 250# endif // _BYTE_ORDER == _LITTLE_ENDIAN 251# ifndef __LONG_LONG_SUPPORTED 252# define _LIBCPP_HAS_NO_LONG_LONG 253# endif // __LONG_LONG_SUPPORTED 254#endif // __FreeBSD__ 255 256#ifdef __NetBSD__ 257# include <sys/endian.h> 258# if _BYTE_ORDER == _LITTLE_ENDIAN 259# define _LIBCPP_LITTLE_ENDIAN 260# else // _BYTE_ORDER == _LITTLE_ENDIAN 261# define _LIBCPP_BIG_ENDIAN 262# endif // _BYTE_ORDER == _LITTLE_ENDIAN 263#endif // __NetBSD__ 264 265#if defined(_WIN32) 266# define _LIBCPP_WIN32API 267# define _LIBCPP_LITTLE_ENDIAN 268# define _LIBCPP_SHORT_WCHAR 1 269// Both MinGW and native MSVC provide a "MSVC"-like environment 270# define _LIBCPP_MSVCRT_LIKE 271// If mingw not explicitly detected, assume using MS C runtime only if 272// a MS compatibility version is specified. 273# if defined(_MSC_VER) && !defined(__MINGW32__) 274# define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 275# endif 276# if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 277# define _LIBCPP_HAS_BITSCAN64 278# endif 279# define _LIBCPP_HAS_OPEN_WITH_WCHAR 280# if defined(_LIBCPP_MSVCRT) 281# define _LIBCPP_HAS_QUICK_EXIT 282# endif 283 284// Some CRT APIs are unavailable to store apps 285# if defined(WINAPI_FAMILY) 286# include <winapifamily.h> 287# if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 288 (!defined(WINAPI_PARTITION_SYSTEM) || \ 289 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 290# define _LIBCPP_WINDOWS_STORE_APP 291# endif 292# endif 293#endif // defined(_WIN32) 294 295#ifdef __sun__ 296# include <sys/isa_defs.h> 297# ifdef _LITTLE_ENDIAN 298# define _LIBCPP_LITTLE_ENDIAN 299# else 300# define _LIBCPP_BIG_ENDIAN 301# endif 302#endif // __sun__ 303 304#if defined(__CloudABI__) 305 // Certain architectures provide arc4random(). Prefer using 306 // arc4random() over /dev/{u,}random to make it possible to obtain 307 // random data even when using sandboxing mechanisms such as chroots, 308 // Capsicum, etc. 309# define _LIBCPP_USING_ARC4_RANDOM 310#elif defined(__Fuchsia__) || defined(__wasi__) 311# define _LIBCPP_USING_GETENTROPY 312#elif defined(__native_client__) 313 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, 314 // including accesses to the special files under /dev. C++11's 315 // std::random_device is instead exposed through a NaCl syscall. 316# define _LIBCPP_USING_NACL_RANDOM 317#elif defined(_LIBCPP_WIN32API) 318# define _LIBCPP_USING_WIN32_RANDOM 319#else 320# define _LIBCPP_USING_DEV_RANDOM 321#endif 322 323#if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 324# include <endian.h> 325# if __BYTE_ORDER == __LITTLE_ENDIAN 326# define _LIBCPP_LITTLE_ENDIAN 327# elif __BYTE_ORDER == __BIG_ENDIAN 328# define _LIBCPP_BIG_ENDIAN 329# else // __BYTE_ORDER == __BIG_ENDIAN 330# error unable to determine endian 331# endif 332#endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 333 334#if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 335# define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 336#else 337# define _LIBCPP_NO_CFI 338#endif 339 340#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 341# if defined(__FreeBSD__) 342# define _LIBCPP_HAS_ALIGNED_ALLOC 343# define _LIBCPP_HAS_QUICK_EXIT 344# define _LIBCPP_HAS_C11_FEATURES 345# if __FreeBSD_version >= 1300064 || \ 346 (__FreeBSD_version >= 1201504 && __FreeBSD_version < 1300000) 347# define _LIBCPP_HAS_TIMESPEC_GET 348# endif 349# elif defined(__BIONIC__) 350# define _LIBCPP_HAS_C11_FEATURES 351# if __ANDROID_API__ >= 21 352# define _LIBCPP_HAS_QUICK_EXIT 353# endif 354# if __ANDROID_API__ >= 28 355# define _LIBCPP_HAS_ALIGNED_ALLOC 356# endif 357# if __ANDROID_API__ >= 29 358# define _LIBCPP_HAS_TIMESPEC_GET 359# endif 360# elif defined(__Fuchsia__) || defined(__wasi__) || defined(__NetBSD__) 361# define _LIBCPP_HAS_ALIGNED_ALLOC 362# define _LIBCPP_HAS_QUICK_EXIT 363# define _LIBCPP_HAS_TIMESPEC_GET 364# define _LIBCPP_HAS_C11_FEATURES 365# elif defined(__linux__) 366# if !defined(_LIBCPP_HAS_MUSL_LIBC) 367# if _LIBCPP_GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 368# define _LIBCPP_HAS_QUICK_EXIT 369# endif 370# if _LIBCPP_GLIBC_PREREQ(2, 17) 371# define _LIBCPP_HAS_ALIGNED_ALLOC 372# define _LIBCPP_HAS_C11_FEATURES 373# define _LIBCPP_HAS_TIMESPEC_GET 374# endif 375# else // defined(_LIBCPP_HAS_MUSL_LIBC) 376# define _LIBCPP_HAS_ALIGNED_ALLOC 377# define _LIBCPP_HAS_QUICK_EXIT 378# define _LIBCPP_HAS_TIMESPEC_GET 379# define _LIBCPP_HAS_C11_FEATURES 380# endif 381# endif // __linux__ 382#endif 383 384#ifndef _LIBCPP_CXX03_LANG 385# define _LIBCPP_ALIGNOF(_Tp) alignof(_Tp) 386#elif defined(_LIBCPP_COMPILER_CLANG) 387# define _LIBCPP_ALIGNOF(_Tp) _Alignof(_Tp) 388#else 389// This definition is potentially buggy, but it's only taken with GCC in C++03, 390// which we barely support anyway. See llvm.org/PR39713 391# define _LIBCPP_ALIGNOF(_Tp) __alignof(_Tp) 392#endif 393 394#define _LIBCPP_PREFERRED_ALIGNOF(_Tp) __alignof(_Tp) 395 396#if defined(_LIBCPP_COMPILER_CLANG) 397 398// _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for 399// _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility. 400#if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 401 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2)) || \ 402 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 403#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 404#endif 405 406#if __has_feature(cxx_alignas) 407# define _ALIGNAS_TYPE(x) alignas(x) 408# define _ALIGNAS(x) alignas(x) 409#else 410# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 411# define _ALIGNAS(x) __attribute__((__aligned__(x))) 412#endif 413 414#if __cplusplus < 201103L 415typedef __char16_t char16_t; 416typedef __char32_t char32_t; 417#endif 418 419#if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS) 420#define _LIBCPP_NO_EXCEPTIONS 421#endif 422 423#if !(__has_feature(cxx_rtti)) && !defined(_LIBCPP_NO_RTTI) 424#define _LIBCPP_NO_RTTI 425#endif 426 427#if !(__has_feature(cxx_strong_enums)) 428#define _LIBCPP_HAS_NO_STRONG_ENUMS 429#endif 430 431#if __has_feature(cxx_attributes) 432# define _LIBCPP_NORETURN [[noreturn]] 433#else 434# define _LIBCPP_NORETURN __attribute__ ((noreturn)) 435#endif 436 437#if !(__has_feature(cxx_lambdas)) 438#define _LIBCPP_HAS_NO_LAMBDAS 439#endif 440 441#if !(__has_feature(cxx_nullptr)) 442# if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 443# define nullptr __nullptr 444# else 445# define _LIBCPP_HAS_NO_NULLPTR 446# endif 447#endif 448 449#if !(__has_feature(cxx_rvalue_references)) 450#define _LIBCPP_HAS_NO_RVALUE_REFERENCES 451#endif 452 453#if !(__has_feature(cxx_auto_type)) 454#define _LIBCPP_HAS_NO_AUTO_TYPE 455#endif 456 457#if !(__has_feature(cxx_variadic_templates)) 458#define _LIBCPP_HAS_NO_VARIADICS 459#endif 460 461// Objective-C++ features (opt-in) 462#if __has_feature(objc_arc) 463#define _LIBCPP_HAS_OBJC_ARC 464#endif 465 466#if __has_feature(objc_arc_weak) 467#define _LIBCPP_HAS_OBJC_ARC_WEAK 468#endif 469 470#if __has_extension(blocks) 471# define _LIBCPP_HAS_EXTENSION_BLOCKS 472#endif 473 474#if !(__has_feature(cxx_relaxed_constexpr)) 475#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 476#endif 477 478#if !(__has_feature(cxx_variable_templates)) 479#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 480#endif 481 482#if !(__has_feature(cxx_noexcept)) 483#define _LIBCPP_HAS_NO_NOEXCEPT 484#endif 485 486#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 487#define _LIBCPP_HAS_NO_ASAN 488#endif 489 490// Allow for build-time disabling of unsigned integer sanitization 491#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 492#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 493#endif 494 495#if __has_builtin(__builtin_launder) 496#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 497#endif 498 499#if !__is_identifier(__has_unique_object_representations) 500#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 501#endif 502 503#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 504 505// Literal operators ""d and ""y are supported starting with LLVM Clang 8 and AppleClang 10.0.1 506#if (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 800) || \ 507 (defined(__apple_build_version__) && __apple_build_version__ < 10010000) 508#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS 509#endif 510 511#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 512 513#elif defined(_LIBCPP_COMPILER_GCC) 514 515#define _ALIGNAS(x) __attribute__((__aligned__(x))) 516#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 517 518#define _LIBCPP_NORETURN __attribute__((noreturn)) 519 520#if !__EXCEPTIONS && !defined(_LIBCPP_NO_EXCEPTIONS) 521#define _LIBCPP_NO_EXCEPTIONS 522#endif 523 524// Determine if GCC supports relaxed constexpr 525#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 526#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 527#endif 528 529// GCC 5 supports variable templates 530#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 531#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 532#endif 533 534#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 535#define _LIBCPP_HAS_NO_ASAN 536#endif 537 538#if _GNUC_VER >= 700 539#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 540#endif 541 542#if _GNUC_VER >= 700 543#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 544#endif 545 546#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 547 548#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 549 550#elif defined(_LIBCPP_COMPILER_MSVC) 551 552#define _LIBCPP_TOSTRING2(x) #x 553#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 554#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 555 556#if _MSC_VER < 1900 557#error "MSVC versions prior to Visual Studio 2015 are not supported" 558#endif 559 560#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 561#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 562#define __alignof__ __alignof 563#define _LIBCPP_NORETURN __declspec(noreturn) 564#define _ALIGNAS(x) __declspec(align(x)) 565#define _ALIGNAS_TYPE(x) alignas(x) 566 567#define _LIBCPP_WEAK 568 569#define _LIBCPP_HAS_NO_ASAN 570 571#define _LIBCPP_ALWAYS_INLINE __forceinline 572 573#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 574 575#define _LIBCPP_DISABLE_EXTENSION_WARNING 576 577#elif defined(_LIBCPP_COMPILER_IBM) 578 579#define _ALIGNAS(x) __attribute__((__aligned__(x))) 580#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 581#define _ATTRIBUTE(x) __attribute__((x)) 582#define _LIBCPP_NORETURN __attribute__((noreturn)) 583 584#define _LIBCPP_HAS_NO_UNICODE_CHARS 585#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 586 587#if defined(_AIX) 588#define __MULTILOCALE_API 589#endif 590 591#define _LIBCPP_HAS_NO_ASAN 592 593#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 594 595#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 596 597#define _LIBCPP_DISABLE_EXTENSION_WARNING 598 599#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 600 601#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 602 603#ifdef _DLL 604# define _LIBCPP_CRT_FUNC __declspec(dllimport) 605#else 606# define _LIBCPP_CRT_FUNC 607#endif 608 609#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 610# define _LIBCPP_DLL_VIS 611# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 612# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 613# define _LIBCPP_OVERRIDABLE_FUNC_VIS 614# define _LIBCPP_EXPORTED_FROM_ABI 615#elif defined(_LIBCPP_BUILDING_LIBRARY) 616# define _LIBCPP_DLL_VIS __declspec(dllexport) 617# if defined(__MINGW32__) 618# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 619# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 620# else 621# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 622# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 623# endif 624# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 625# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 626#else 627# define _LIBCPP_DLL_VIS __declspec(dllimport) 628# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 629# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 630# define _LIBCPP_OVERRIDABLE_FUNC_VIS 631# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 632#endif 633 634#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 635#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 636#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 637#define _LIBCPP_HIDDEN 638#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 639#define _LIBCPP_TEMPLATE_VIS 640#define _LIBCPP_ENUM_VIS 641 642#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 643 644#ifndef _LIBCPP_HIDDEN 645# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 646# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 647# else 648# define _LIBCPP_HIDDEN 649# endif 650#endif 651 652#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 653# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 654// The inline should be removed once PR32114 is resolved 655# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 656# else 657# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 658# endif 659#endif 660 661#ifndef _LIBCPP_FUNC_VIS 662# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 663# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 664# else 665# define _LIBCPP_FUNC_VIS 666# endif 667#endif 668 669#ifndef _LIBCPP_TYPE_VIS 670# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 671# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 672# else 673# define _LIBCPP_TYPE_VIS 674# endif 675#endif 676 677#ifndef _LIBCPP_TEMPLATE_VIS 678# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 679# if __has_attribute(__type_visibility__) 680# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 681# else 682# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 683# endif 684# else 685# define _LIBCPP_TEMPLATE_VIS 686# endif 687#endif 688 689#ifndef _LIBCPP_EXPORTED_FROM_ABI 690# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 691# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 692# else 693# define _LIBCPP_EXPORTED_FROM_ABI 694# endif 695#endif 696 697#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 698#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 699#endif 700 701#ifndef _LIBCPP_EXCEPTION_ABI 702# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 703# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 704# else 705# define _LIBCPP_EXCEPTION_ABI 706# endif 707#endif 708 709#ifndef _LIBCPP_ENUM_VIS 710# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 711# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 712# else 713# define _LIBCPP_ENUM_VIS 714# endif 715#endif 716 717#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 718# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 719# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 720# else 721# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 722# endif 723#endif 724 725#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 726#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 727#endif 728 729#if __has_attribute(internal_linkage) 730# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 731#else 732# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 733#endif 734 735#if __has_attribute(exclude_from_explicit_instantiation) 736# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 737#else 738 // Try to approximate the effect of exclude_from_explicit_instantiation 739 // (which is that entities are not assumed to be provided by explicit 740 // template instantiations in the dylib) by always inlining those entities. 741# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 742#endif 743 744#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 745# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 746# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 747# else 748# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 749# endif 750#endif 751 752#ifndef _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT 753# ifdef _LIBCPP_OBJECT_FORMAT_COFF // Windows binaries can't merge typeinfos. 754# define _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT 0 755#else 756// TODO: This isn't strictly correct on ELF platforms due to llvm.org/PR37398 757// And we should consider defaulting to OFF. 758# define _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT 1 759#endif 760#endif 761 762#ifndef _LIBCPP_HIDE_FROM_ABI 763# if _LIBCPP_HIDE_FROM_ABI_PER_TU 764# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 765# else 766# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 767# endif 768#endif 769 770#ifdef _LIBCPP_BUILDING_LIBRARY 771# if _LIBCPP_ABI_VERSION > 1 772# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 773# else 774# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 775# endif 776#else 777# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 778#endif 779 780// Just so we can migrate to the new macros gradually. 781#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 782 783// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 784#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 785#define _LIBCPP_END_NAMESPACE_STD } } 786#define _VSTD std::_LIBCPP_ABI_NAMESPACE 787_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 788 789#if _LIBCPP_STD_VER >= 17 790#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 791 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 792#else 793#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 794 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 795#endif 796 797#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 798 _LIBCPP_END_NAMESPACE_STD } } 799 800#define _VSTD_FS _VSTD::__fs::filesystem 801 802#ifndef _LIBCPP_PREFERRED_OVERLOAD 803# if __has_attribute(__enable_if__) 804# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 805# endif 806#endif 807 808#ifndef _LIBCPP_HAS_NO_NOEXCEPT 809# define _NOEXCEPT noexcept 810# define _NOEXCEPT_(x) noexcept(x) 811#else 812# define _NOEXCEPT throw() 813# define _NOEXCEPT_(x) 814#endif 815 816#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 817typedef unsigned short char16_t; 818typedef unsigned int char32_t; 819#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 820 821#ifndef __SIZEOF_INT128__ 822#define _LIBCPP_HAS_NO_INT128 823#endif 824 825#ifdef _LIBCPP_CXX03_LANG 826# define static_assert(...) _Static_assert(__VA_ARGS__) 827# define decltype(...) __decltype(__VA_ARGS__) 828#endif // _LIBCPP_CXX03_LANG 829 830#ifdef _LIBCPP_CXX03_LANG 831# define _LIBCPP_CONSTEXPR 832#else 833# define _LIBCPP_CONSTEXPR constexpr 834#endif 835 836#ifdef _LIBCPP_CXX03_LANG 837# define _LIBCPP_DEFAULT {} 838#else 839# define _LIBCPP_DEFAULT = default; 840#endif 841 842#ifdef _LIBCPP_CXX03_LANG 843# define _LIBCPP_EQUAL_DELETE 844#else 845# define _LIBCPP_EQUAL_DELETE = delete 846#endif 847 848#ifdef __GNUC__ 849# define _LIBCPP_NOALIAS __attribute__((__malloc__)) 850#else 851# define _LIBCPP_NOALIAS 852#endif 853 854#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 855 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 856# define _LIBCPP_EXPLICIT explicit 857#else 858# define _LIBCPP_EXPLICIT 859#endif 860 861#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 862#define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 863#endif 864 865#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 866# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 867# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 868 __lx __v_; \ 869 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 870 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 871 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 872 }; 873#else // _LIBCPP_HAS_NO_STRONG_ENUMS 874# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 875# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 876#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 877 878#ifdef _LIBCPP_DEBUG 879# if _LIBCPP_DEBUG == 0 880# define _LIBCPP_DEBUG_LEVEL 1 881# elif _LIBCPP_DEBUG == 1 882# define _LIBCPP_DEBUG_LEVEL 2 883# else 884# error Supported values for _LIBCPP_DEBUG are 0 and 1 885# endif 886# if !defined(_LIBCPP_BUILDING_LIBRARY) 887# define _LIBCPP_EXTERN_TEMPLATE(...) 888# endif 889#endif 890 891#ifndef _LIBCPP_DEBUG_LEVEL 892# define _LIBCPP_DEBUG_LEVEL 0 893#endif 894 895#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 896#define _LIBCPP_EXTERN_TEMPLATE(...) 897#define _LIBCPP_EXTERN_TEMPLATE2(...) 898#endif 899 900#ifndef _LIBCPP_EXTERN_TEMPLATE 901#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 902#endif 903 904#ifndef _LIBCPP_EXTERN_TEMPLATE2 905#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 906#endif 907 908#ifndef _LIBCPP_EXTERN_TEMPLATE_DEFINE 909#define _LIBCPP_EXTERN_TEMPLATE_DEFINE(...) template __VA_ARGS__; 910#endif 911 912#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 913 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 914#define _LIBCPP_LOCALE__L_EXTENSIONS 1 915#endif 916 917#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 918// Most unix variants have catopen. These are the specific ones that don't. 919# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 920# define _LIBCPP_HAS_CATOPEN 1 921# endif 922#endif 923 924#ifdef __FreeBSD__ 925#define _DECLARE_C99_LDBL_MATH 1 926#endif 927 928// If we are getting operator new from the MSVC CRT, then allocation overloads 929// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 930#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 931# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 932#elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) 933 // We're deferring to Microsoft's STL to provide aligned new et al. We don't 934 // have it unless the language feature test macro is defined. 935# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 936#endif 937 938#if defined(__APPLE__) 939# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 940 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 941# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 942# endif 943#endif // defined(__APPLE__) 944 945#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 946 (defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 947 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606)) 948# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 949#endif 950 951#if defined(__APPLE__) || defined(__FreeBSD__) 952#define _LIBCPP_HAS_DEFAULTRUNELOCALE 953#endif 954 955#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 956#define _LIBCPP_WCTYPE_IS_MASK 957#endif 958 959#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) 960#define _LIBCPP_NO_HAS_CHAR8_T 961#endif 962 963// Deprecation macros. 964// 965// Deprecations warnings are always enabled, except when users explicitly opt-out 966// by defining _LIBCPP_DISABLE_DEPRECATION_WARNINGS. 967#if !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) 968# if __has_attribute(deprecated) 969# define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 970# elif _LIBCPP_STD_VER > 11 971# define _LIBCPP_DEPRECATED [[deprecated]] 972# else 973# define _LIBCPP_DEPRECATED 974# endif 975#else 976# define _LIBCPP_DEPRECATED 977#endif 978 979#if !defined(_LIBCPP_CXX03_LANG) 980# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 981#else 982# define _LIBCPP_DEPRECATED_IN_CXX11 983#endif 984 985#if _LIBCPP_STD_VER >= 14 986# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 987#else 988# define _LIBCPP_DEPRECATED_IN_CXX14 989#endif 990 991#if _LIBCPP_STD_VER >= 17 992# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 993#else 994# define _LIBCPP_DEPRECATED_IN_CXX17 995#endif 996 997// Macros to enter and leave a state where deprecation warnings are suppressed. 998#if !defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH) && \ 999 (defined(_LIBCPP_COMPILER_CLANG) || defined(_LIBCPP_COMPILER_GCC)) 1000# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \ 1001 _Pragma("GCC diagnostic push") \ 1002 _Pragma("GCC diagnostic ignored \"-Wdeprecated\"") 1003# define _LIBCPP_SUPPRESS_DEPRECATED_POP \ 1004 _Pragma("GCC diagnostic pop") 1005#endif 1006#if !defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH) 1007# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH 1008# define _LIBCPP_SUPPRESS_DEPRECATED_POP 1009#endif 1010 1011#if _LIBCPP_STD_VER <= 11 1012# define _LIBCPP_EXPLICIT_AFTER_CXX11 1013#else 1014# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1015#endif 1016 1017#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1018# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1019#else 1020# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1021#endif 1022 1023#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1024# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1025#else 1026# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1027#endif 1028 1029#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1030# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1031#else 1032# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1033#endif 1034 1035#if _LIBCPP_STD_VER > 17 && \ 1036 !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) && \ 1037 !defined(_LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED) 1038# define _LIBCPP_CONSTEXPR_AFTER_CXX17_WITH_IS_CONSTANT_EVALUATED constexpr 1039#else 1040# define _LIBCPP_CONSTEXPR_AFTER_CXX17_WITH_IS_CONSTANT_EVALUATED 1041#endif 1042 1043// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 1044// NODISCARD macros to the correct attribute. 1045#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1046# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 1047#elif defined(_LIBCPP_COMPILER_CLANG) && !defined(_LIBCPP_CXX03_LANG) 1048# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 1049#else 1050// We can't use GCC's [[gnu::warn_unused_result]] and 1051// __attribute__((warn_unused_result)), because GCC does not silence them via 1052// (void) cast. 1053# define _LIBCPP_NODISCARD_ATTRIBUTE 1054#endif 1055 1056// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1057// specified as such as an extension. 1058#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1059# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1060#else 1061# define _LIBCPP_NODISCARD_EXT 1062#endif 1063 1064#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1065 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1066# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1067#else 1068# define _LIBCPP_NODISCARD_AFTER_CXX17 1069#endif 1070 1071#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1072# define _LIBCPP_INLINE_VAR inline 1073#else 1074# define _LIBCPP_INLINE_VAR 1075#endif 1076 1077#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1078# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 1079#else 1080# define _LIBCPP_EXPLICIT_MOVE(x) (x) 1081#endif 1082 1083#ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG 1084#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1085#define _LIBCPP_CONSTEXPR_IF_NODEBUG 1086#else 1087#define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1088#endif 1089#endif 1090 1091#if __has_attribute(no_destroy) 1092# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__)) 1093#else 1094# define _LIBCPP_NO_DESTROY 1095#endif 1096 1097#ifndef _LIBCPP_HAS_NO_ASAN 1098_LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 1099 const void *, const void *, const void *, const void *); 1100#endif 1101 1102// Try to find out if RTTI is disabled. 1103// g++ and cl.exe have RTTI on by default and define a macro when it is. 1104// g++ only defines the macro in 4.3.2 and onwards. 1105#if !defined(_LIBCPP_NO_RTTI) 1106# if defined(__GNUC__) && \ 1107 ((__GNUC__ >= 5) || \ 1108 (__GNUC__ == 4 && (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && \ 1109 !defined(__GXX_RTTI) 1110# define _LIBCPP_NO_RTTI 1111# elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1112# define _LIBCPP_NO_RTTI 1113# endif 1114#endif 1115 1116#ifndef _LIBCPP_WEAK 1117#define _LIBCPP_WEAK __attribute__((__weak__)) 1118#endif 1119 1120// Thread API 1121#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1122 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1123 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1124 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1125# if defined(__FreeBSD__) || \ 1126 defined(__wasi__) || \ 1127 defined(__NetBSD__) || \ 1128 defined(__linux__) || \ 1129 defined(__GNU__) || \ 1130 defined(__APPLE__) || \ 1131 defined(__CloudABI__) || \ 1132 defined(__sun__) || \ 1133 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1134# define _LIBCPP_HAS_THREAD_API_PTHREAD 1135# elif defined(__Fuchsia__) 1136 // TODO(44575): Switch to C11 thread API when possible. 1137# define _LIBCPP_HAS_THREAD_API_PTHREAD 1138# elif defined(_LIBCPP_WIN32API) 1139# define _LIBCPP_HAS_THREAD_API_WIN32 1140# else 1141# error "No thread API" 1142# endif // _LIBCPP_HAS_THREAD_API 1143#endif // _LIBCPP_HAS_NO_THREADS 1144 1145#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1146#if defined(__ANDROID__) && __ANDROID_API__ >= 30 1147#define _LIBCPP_HAS_COND_CLOCKWAIT 1148#elif defined(_LIBCPP_GLIBC_PREREQ) 1149#if _LIBCPP_GLIBC_PREREQ(2, 30) 1150#define _LIBCPP_HAS_COND_CLOCKWAIT 1151#endif 1152#endif 1153#endif 1154 1155#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1156#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1157 _LIBCPP_HAS_NO_THREADS is not defined. 1158#endif 1159 1160#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1161#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1162 _LIBCPP_HAS_NO_THREADS is defined. 1163#endif 1164 1165#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1166#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1167 _LIBCPP_HAS_NO_THREADS is defined. 1168#endif 1169 1170#if defined(__STDCPP_THREADS__) && defined(_LIBCPP_HAS_NO_THREADS) 1171#error _LIBCPP_HAS_NO_THREADS cannot be set when __STDCPP_THREADS__ is set. 1172#endif 1173 1174#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(__STDCPP_THREADS__) 1175#define __STDCPP_THREADS__ 1 1176#endif 1177 1178// The glibc and Bionic implementation of pthreads implements 1179// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 1180// mutexes have no destroy mechanism. 1181// 1182// This optimization can't be performed on Apple platforms, where 1183// pthread_mutex_destroy can allow the kernel to release resources. 1184// See https://llvm.org/D64298 for details. 1185// 1186// TODO(EricWF): Enable this optimization on Bionic after speaking to their 1187// respective stakeholders. 1188#if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) \ 1189 || (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) \ 1190 || defined(_LIBCPP_HAS_THREAD_API_WIN32) 1191# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 1192#endif 1193 1194// Destroying a condvar is a nop on Windows. 1195// 1196// This optimization can't be performed on Apple platforms, where 1197// pthread_cond_destroy can allow the kernel to release resources. 1198// See https://llvm.org/D64298 for details. 1199// 1200// TODO(EricWF): This is potentially true for some pthread implementations 1201// as well. 1202#if (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) || \ 1203 defined(_LIBCPP_HAS_THREAD_API_WIN32) 1204# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 1205#endif 1206 1207// Systems that use capability-based security (FreeBSD with Capsicum, 1208// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1209// Functions like open(), rename(), unlink() and stat() should not be 1210// used, as they attempt to access the global filesystem namespace. 1211#ifdef __CloudABI__ 1212#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1213#endif 1214 1215// CloudABI is intended for running networked services. Processes do not 1216// have standard input and output channels. 1217#ifdef __CloudABI__ 1218#define _LIBCPP_HAS_NO_STDIN 1219#define _LIBCPP_HAS_NO_STDOUT 1220#endif 1221 1222// Some systems do not provide gets() in their C library, for security reasons. 1223#ifndef _LIBCPP_C_HAS_NO_GETS 1224# if defined(_LIBCPP_MSVCRT) || \ 1225 (defined(__FreeBSD_version) && __FreeBSD_version >= 1300043) 1226# define _LIBCPP_C_HAS_NO_GETS 1227# endif 1228#endif 1229 1230#if defined(__BIONIC__) || defined(__CloudABI__) || \ 1231 defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1232#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1233#endif 1234 1235// Thread-unsafe functions such as strtok() and localtime() 1236// are not available. 1237#ifdef __CloudABI__ 1238#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1239#endif 1240 1241#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1242# define _LIBCPP_HAS_C_ATOMIC_IMP 1243#elif defined(_LIBCPP_COMPILER_GCC) 1244# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1245#endif 1246 1247#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && \ 1248 !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) && \ 1249 !defined(_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP)) \ 1250 || defined(_LIBCPP_HAS_NO_THREADS) 1251# define _LIBCPP_HAS_NO_ATOMIC_HEADER 1252#else 1253# ifndef _LIBCPP_ATOMIC_FLAG_TYPE 1254# define _LIBCPP_ATOMIC_FLAG_TYPE bool 1255# endif 1256# ifdef _LIBCPP_FREESTANDING 1257# define _LIBCPP_ATOMIC_ONLY_USE_BUILTINS 1258# endif 1259#endif 1260 1261#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1262#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1263#endif 1264 1265#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1266# if defined(__clang__) && __has_attribute(acquire_capability) 1267// Work around the attribute handling in clang. When both __declspec and 1268// __attribute__ are present, the processing goes awry preventing the definition 1269// of the types. 1270# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1271# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1272# endif 1273# endif 1274#endif 1275 1276#ifndef _LIBCPP_THREAD_SAFETY_ANNOTATION 1277# ifdef _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1278# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) __attribute__((x)) 1279# else 1280# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) 1281# endif 1282#endif // _LIBCPP_THREAD_SAFETY_ANNOTATION 1283 1284#if __has_attribute(require_constant_initialization) 1285# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1286#else 1287# define _LIBCPP_SAFE_STATIC 1288#endif 1289 1290#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1291#define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1292#endif 1293 1294#if !__has_builtin(__builtin_is_constant_evaluated) && _GNUC_VER < 900 1295#define _LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED 1296#endif 1297 1298#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1299# if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1300# define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1301# endif 1302#endif 1303 1304#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1305# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1306 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1307# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1308 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1309#else 1310# define _LIBCPP_DIAGNOSE_WARNING(...) 1311# define _LIBCPP_DIAGNOSE_ERROR(...) 1312#endif 1313 1314// Use a function like macro to imply that it must be followed by a semicolon 1315#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1316# define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1317#elif __has_cpp_attribute(clang::fallthrough) 1318# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1319#elif __has_attribute(fallthrough) || _GNUC_VER >= 700 1320# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1321#else 1322# define _LIBCPP_FALLTHROUGH() ((void)0) 1323#endif 1324 1325#if __has_attribute(__nodebug__) 1326#define _LIBCPP_NODEBUG __attribute__((__nodebug__)) 1327#else 1328#define _LIBCPP_NODEBUG 1329#endif 1330 1331#ifndef _LIBCPP_NODEBUG_TYPE 1332#if __has_attribute(__nodebug__) && \ 1333 (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 900) 1334#define _LIBCPP_NODEBUG_TYPE __attribute__((nodebug)) 1335#else 1336#define _LIBCPP_NODEBUG_TYPE 1337#endif 1338#endif // !defined(_LIBCPP_NODEBUG_TYPE) 1339 1340#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1341 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1342# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1343#else 1344# define _LIBCPP_DECLSPEC_EMPTY_BASES 1345#endif 1346 1347#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1348#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1349#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1350#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1351#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1352#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1353 1354#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1355#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1356#endif 1357 1358#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1359#define _LIBCPP_HAS_NO_IS_AGGREGATE 1360#endif 1361 1362#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1363#define _LIBCPP_HAS_NO_COROUTINES 1364#endif 1365 1366#if !defined(__cpp_impl_three_way_comparison) || __cpp_impl_three_way_comparison < 201907L 1367#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1368#endif 1369 1370// Decide whether to use availability macros. 1371#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1372 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1373 __has_feature(attribute_availability_with_strict) && \ 1374 __has_feature(attribute_availability_in_templates) && \ 1375 __has_extension(pragma_clang_attribute_external_declaration) 1376# ifdef __APPLE__ 1377# define _LIBCPP_USE_AVAILABILITY_APPLE 1378# endif 1379#endif 1380 1381// Define availability macros. 1382#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1383# define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1384 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1385 __attribute__((availability(ios,strict,introduced=10.0))) \ 1386 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1387 __attribute__((availability(watchos,strict,introduced=3.0))) 1388# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS \ 1389 __attribute__((availability(macosx,strict,introduced=10.14))) \ 1390 __attribute__((availability(ios,strict,introduced=12.0))) \ 1391 __attribute__((availability(tvos,strict,introduced=12.0))) \ 1392 __attribute__((availability(watchos,strict,introduced=5.0))) 1393# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS \ 1394 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1395# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST \ 1396 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1397# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1398 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1399 __attribute__((availability(ios,strict,introduced=10.0))) \ 1400 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1401 __attribute__((availability(watchos,strict,introduced=3.0))) 1402# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1403 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1404 __attribute__((availability(ios,strict,introduced=10.0))) \ 1405 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1406 __attribute__((availability(watchos,strict,introduced=3.0))) 1407# define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1408 __attribute__((availability(ios,strict,introduced=6.0))) 1409# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1410 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1411 __attribute__((availability(ios,strict,introduced=7.0))) 1412# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1413 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1414 __attribute__((availability(ios,strict,introduced=7.0))) 1415# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1416 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1417 __attribute__((availability(ios,strict,introduced=7.0))) 1418# define _LIBCPP_AVAILABILITY_FILESYSTEM \ 1419 __attribute__((availability(macosx,strict,introduced=10.15))) \ 1420 __attribute__((availability(ios,strict,introduced=13.0))) \ 1421 __attribute__((availability(tvos,strict,introduced=13.0))) \ 1422 __attribute__((availability(watchos,strict,introduced=6.0))) 1423# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH \ 1424 _Pragma("clang attribute push(__attribute__((availability(macosx,strict,introduced=10.15))), apply_to=any(function,record))") \ 1425 _Pragma("clang attribute push(__attribute__((availability(ios,strict,introduced=13.0))), apply_to=any(function,record))") \ 1426 _Pragma("clang attribute push(__attribute__((availability(tvos,strict,introduced=13.0))), apply_to=any(function,record))") \ 1427 _Pragma("clang attribute push(__attribute__((availability(watchos,strict,introduced=6.0))), apply_to=any(function,record))") 1428# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP \ 1429 _Pragma("clang attribute pop") \ 1430 _Pragma("clang attribute pop") \ 1431 _Pragma("clang attribute pop") \ 1432 _Pragma("clang attribute pop") 1433# define _LIBCPP_AVAILABILITY_TO_CHARS \ 1434 _LIBCPP_AVAILABILITY_FILESYSTEM 1435#else 1436# define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1437# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1438# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1439# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1440# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1441# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1442# define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1443# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1444# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1445# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1446# define _LIBCPP_AVAILABILITY_FILESYSTEM 1447# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH 1448# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP 1449# define _LIBCPP_AVAILABILITY_TO_CHARS 1450#endif 1451 1452// Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1453#ifdef _LIBCPP_NO_EXCEPTIONS 1454# define _LIBCPP_AVAILABILITY_FUTURE 1455# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1456# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS 1457# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS 1458#else 1459# define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1460# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1461# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1462# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1463#endif 1464 1465// The stream API was dropped and re-added in the dylib shipped on macOS 1466// and iOS. We can only assume the dylib to provide these definitions for 1467// macosx >= 10.9 and ios >= 7.0. Otherwise, the definitions are available 1468// from the headers, but not from the dylib. Explicit instantiation 1469// declarations for streams exist conditionally to this; if we provide 1470// an explicit instantiation declaration and we try to deploy to a dylib 1471// that does not provide those symbols, we'll get a load-time error. 1472#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1473 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1474 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1475 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1476 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1477# define _LIBCPP_DO_NOT_ASSUME_STREAMS_EXPLICIT_INSTANTIATION_IN_DYLIB 1478#endif 1479 1480#if defined(_LIBCPP_COMPILER_IBM) 1481#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1482#endif 1483 1484#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1485# define _LIBCPP_PUSH_MACROS 1486# define _LIBCPP_POP_MACROS 1487#else 1488 // Don't warn about macro conflicts when we can restore them at the 1489 // end of the header. 1490# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1491# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1492# endif 1493# if defined(_LIBCPP_COMPILER_MSVC) 1494# define _LIBCPP_PUSH_MACROS \ 1495 __pragma(push_macro("min")) \ 1496 __pragma(push_macro("max")) 1497# define _LIBCPP_POP_MACROS \ 1498 __pragma(pop_macro("min")) \ 1499 __pragma(pop_macro("max")) 1500# else 1501# define _LIBCPP_PUSH_MACROS \ 1502 _Pragma("push_macro(\"min\")") \ 1503 _Pragma("push_macro(\"max\")") 1504# define _LIBCPP_POP_MACROS \ 1505 _Pragma("pop_macro(\"min\")") \ 1506 _Pragma("pop_macro(\"max\")") 1507# endif 1508#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1509 1510#ifndef _LIBCPP_NO_AUTO_LINK 1511# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1512# if defined(_DLL) 1513# pragma comment(lib, "c++.lib") 1514# else 1515# pragma comment(lib, "libc++.lib") 1516# endif 1517# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1518#endif // _LIBCPP_NO_AUTO_LINK 1519 1520#define _LIBCPP_UNUSED_VAR(x) ((void)(x)) 1521 1522// Configures the fopen close-on-exec mode character, if any. This string will 1523// be appended to any mode string used by fstream for fopen/fdopen. 1524// 1525// Not all platforms support this, but it helps avoid fd-leaks on platforms that 1526// do. 1527#if defined(__BIONIC__) 1528# define _LIBCPP_FOPEN_CLOEXEC_MODE "e" 1529#else 1530# define _LIBCPP_FOPEN_CLOEXEC_MODE 1531#endif 1532 1533#endif // __cplusplus 1534 1535#endif // _LIBCPP_CONFIG 1536