__config revision 360784
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 10000 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_feature(cxx_relaxed_constexpr)) 471#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 472#endif 473 474#if !(__has_feature(cxx_variable_templates)) 475#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 476#endif 477 478#if !(__has_feature(cxx_noexcept)) 479#define _LIBCPP_HAS_NO_NOEXCEPT 480#endif 481 482#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 483#define _LIBCPP_HAS_NO_ASAN 484#endif 485 486// Allow for build-time disabling of unsigned integer sanitization 487#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 488#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 489#endif 490 491#if __has_builtin(__builtin_launder) 492#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 493#endif 494 495#if !__is_identifier(__has_unique_object_representations) 496#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 497#endif 498 499#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 500 501// Literal operators ""d and ""y are supported starting with LLVM Clang 8 and AppleClang 10.0.1 502#if (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 800) || \ 503 (defined(__apple_build_version__) && __apple_build_version__ < 10010000) 504#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS 505#endif 506 507#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 508 509#elif defined(_LIBCPP_COMPILER_GCC) 510 511#define _ALIGNAS(x) __attribute__((__aligned__(x))) 512#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 513 514#define _LIBCPP_NORETURN __attribute__((noreturn)) 515 516#if !__EXCEPTIONS && !defined(_LIBCPP_NO_EXCEPTIONS) 517#define _LIBCPP_NO_EXCEPTIONS 518#endif 519 520// Determine if GCC supports relaxed constexpr 521#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 522#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 523#endif 524 525// GCC 5 supports variable templates 526#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 527#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 528#endif 529 530#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 531#define _LIBCPP_HAS_NO_ASAN 532#endif 533 534#if _GNUC_VER >= 700 535#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 536#endif 537 538#if _GNUC_VER >= 700 539#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 540#endif 541 542#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 543 544#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__ 545 546#elif defined(_LIBCPP_COMPILER_MSVC) 547 548#define _LIBCPP_TOSTRING2(x) #x 549#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 550#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 551 552#if _MSC_VER < 1900 553#error "MSVC versions prior to Visual Studio 2015 are not supported" 554#endif 555 556#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 557#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 558#define __alignof__ __alignof 559#define _LIBCPP_NORETURN __declspec(noreturn) 560#define _ALIGNAS(x) __declspec(align(x)) 561#define _ALIGNAS_TYPE(x) alignas(x) 562 563#define _LIBCPP_WEAK 564 565#define _LIBCPP_HAS_NO_ASAN 566 567#define _LIBCPP_ALWAYS_INLINE __forceinline 568 569#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 570 571#define _LIBCPP_DISABLE_EXTENSION_WARNING 572 573#elif defined(_LIBCPP_COMPILER_IBM) 574 575#define _ALIGNAS(x) __attribute__((__aligned__(x))) 576#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x)))) 577#define _ATTRIBUTE(x) __attribute__((x)) 578#define _LIBCPP_NORETURN __attribute__((noreturn)) 579 580#define _LIBCPP_HAS_NO_UNICODE_CHARS 581#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 582 583#if defined(_AIX) 584#define __MULTILOCALE_API 585#endif 586 587#define _LIBCPP_HAS_NO_ASAN 588 589#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 590 591#define _LIBCPP_HAS_NO_VECTOR_EXTENSION 592 593#define _LIBCPP_DISABLE_EXTENSION_WARNING 594 595#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 596 597#if defined(_LIBCPP_OBJECT_FORMAT_COFF) 598 599#ifdef _DLL 600# define _LIBCPP_CRT_FUNC __declspec(dllimport) 601#else 602# define _LIBCPP_CRT_FUNC 603#endif 604 605#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 606# define _LIBCPP_DLL_VIS 607# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 608# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 609# define _LIBCPP_OVERRIDABLE_FUNC_VIS 610# define _LIBCPP_EXPORTED_FROM_ABI 611#elif defined(_LIBCPP_BUILDING_LIBRARY) 612# define _LIBCPP_DLL_VIS __declspec(dllexport) 613# if defined(__MINGW32__) 614# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 615# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 616# else 617# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 618# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 619# endif 620# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 621# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 622#else 623# define _LIBCPP_DLL_VIS __declspec(dllimport) 624# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 625# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 626# define _LIBCPP_OVERRIDABLE_FUNC_VIS 627# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 628#endif 629 630#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 631#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 632#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 633#define _LIBCPP_HIDDEN 634#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 635#define _LIBCPP_TEMPLATE_VIS 636#define _LIBCPP_ENUM_VIS 637 638#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 639 640#ifndef _LIBCPP_HIDDEN 641# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 642# define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 643# else 644# define _LIBCPP_HIDDEN 645# endif 646#endif 647 648#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 649# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 650// The inline should be removed once PR32114 is resolved 651# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 652# else 653# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 654# endif 655#endif 656 657#ifndef _LIBCPP_FUNC_VIS 658# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 659# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 660# else 661# define _LIBCPP_FUNC_VIS 662# endif 663#endif 664 665#ifndef _LIBCPP_TYPE_VIS 666# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 667# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 668# else 669# define _LIBCPP_TYPE_VIS 670# endif 671#endif 672 673#ifndef _LIBCPP_TEMPLATE_VIS 674# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 675# if __has_attribute(__type_visibility__) 676# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 677# else 678# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 679# endif 680# else 681# define _LIBCPP_TEMPLATE_VIS 682# endif 683#endif 684 685#ifndef _LIBCPP_EXPORTED_FROM_ABI 686# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 687# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 688# else 689# define _LIBCPP_EXPORTED_FROM_ABI 690# endif 691#endif 692 693#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 694#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 695#endif 696 697#ifndef _LIBCPP_EXCEPTION_ABI 698# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 699# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 700# else 701# define _LIBCPP_EXCEPTION_ABI 702# endif 703#endif 704 705#ifndef _LIBCPP_ENUM_VIS 706# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 707# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 708# else 709# define _LIBCPP_ENUM_VIS 710# endif 711#endif 712 713#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 714# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 715# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 716# else 717# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 718# endif 719#endif 720 721#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 722#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 723#endif 724 725#if __has_attribute(internal_linkage) 726# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 727#else 728# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 729#endif 730 731#if __has_attribute(exclude_from_explicit_instantiation) 732# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 733#else 734 // Try to approximate the effect of exclude_from_explicit_instantiation 735 // (which is that entities are not assumed to be provided by explicit 736 // template instantiations in the dylib) by always inlining those entities. 737# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 738#endif 739 740#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 741# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 742# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 743# else 744# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 745# endif 746#endif 747 748#ifndef _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT 749# ifdef _LIBCPP_OBJECT_FORMAT_COFF // Windows binaries can't merge typeinfos. 750# define _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT 0 751#else 752// TODO: This isn't strictly correct on ELF platforms due to llvm.org/PR37398 753// And we should consider defaulting to OFF. 754# define _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT 1 755#endif 756#endif 757 758#ifndef _LIBCPP_HIDE_FROM_ABI 759# if _LIBCPP_HIDE_FROM_ABI_PER_TU 760# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 761# else 762# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 763# endif 764#endif 765 766#ifdef _LIBCPP_BUILDING_LIBRARY 767# if _LIBCPP_ABI_VERSION > 1 768# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 769# else 770# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 771# endif 772#else 773# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 774#endif 775 776// Just so we can migrate to the new macros gradually. 777#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 778 779// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 780#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 781#define _LIBCPP_END_NAMESPACE_STD } } 782#define _VSTD std::_LIBCPP_ABI_NAMESPACE 783_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 784 785#if _LIBCPP_STD_VER >= 17 786#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 787 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 788#else 789#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 790 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 791#endif 792 793#define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 794 _LIBCPP_END_NAMESPACE_STD } } 795 796#define _VSTD_FS _VSTD::__fs::filesystem 797 798#ifndef _LIBCPP_PREFERRED_OVERLOAD 799# if __has_attribute(__enable_if__) 800# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 801# endif 802#endif 803 804#ifndef _LIBCPP_HAS_NO_NOEXCEPT 805# define _NOEXCEPT noexcept 806# define _NOEXCEPT_(x) noexcept(x) 807#else 808# define _NOEXCEPT throw() 809# define _NOEXCEPT_(x) 810#endif 811 812#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 813typedef unsigned short char16_t; 814typedef unsigned int char32_t; 815#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 816 817#ifndef __SIZEOF_INT128__ 818#define _LIBCPP_HAS_NO_INT128 819#endif 820 821#ifdef _LIBCPP_CXX03_LANG 822# define static_assert(...) _Static_assert(__VA_ARGS__) 823# define decltype(...) __decltype(__VA_ARGS__) 824#endif // _LIBCPP_CXX03_LANG 825 826#ifdef _LIBCPP_CXX03_LANG 827# define _LIBCPP_CONSTEXPR 828#else 829# define _LIBCPP_CONSTEXPR constexpr 830#endif 831 832#ifdef _LIBCPP_CXX03_LANG 833# define _LIBCPP_DEFAULT {} 834#else 835# define _LIBCPP_DEFAULT = default; 836#endif 837 838#ifdef _LIBCPP_CXX03_LANG 839# define _LIBCPP_EQUAL_DELETE 840#else 841# define _LIBCPP_EQUAL_DELETE = delete 842#endif 843 844#ifdef __GNUC__ 845# define _LIBCPP_NOALIAS __attribute__((__malloc__)) 846#else 847# define _LIBCPP_NOALIAS 848#endif 849 850#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 851 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 852# define _LIBCPP_EXPLICIT explicit 853#else 854# define _LIBCPP_EXPLICIT 855#endif 856 857#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 858#define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 859#endif 860 861#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 862# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 863# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 864 __lx __v_; \ 865 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 866 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 867 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 868 }; 869#else // _LIBCPP_HAS_NO_STRONG_ENUMS 870# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 871# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 872#endif // _LIBCPP_HAS_NO_STRONG_ENUMS 873 874#ifdef _LIBCPP_DEBUG 875# if _LIBCPP_DEBUG == 0 876# define _LIBCPP_DEBUG_LEVEL 1 877# elif _LIBCPP_DEBUG == 1 878# define _LIBCPP_DEBUG_LEVEL 2 879# else 880# error Supported values for _LIBCPP_DEBUG are 0 and 1 881# endif 882# if !defined(_LIBCPP_BUILDING_LIBRARY) 883# define _LIBCPP_EXTERN_TEMPLATE(...) 884# endif 885#endif 886 887#ifndef _LIBCPP_DEBUG_LEVEL 888# define _LIBCPP_DEBUG_LEVEL 0 889#endif 890 891#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 892#define _LIBCPP_EXTERN_TEMPLATE(...) 893#define _LIBCPP_EXTERN_TEMPLATE2(...) 894#endif 895 896#ifndef _LIBCPP_EXTERN_TEMPLATE 897#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 898#endif 899 900#ifndef _LIBCPP_EXTERN_TEMPLATE2 901#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 902#endif 903 904#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 905 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 906#define _LIBCPP_LOCALE__L_EXTENSIONS 1 907#endif 908 909#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 910// Most unix variants have catopen. These are the specific ones that don't. 911# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 912# define _LIBCPP_HAS_CATOPEN 1 913# endif 914#endif 915 916#ifdef __FreeBSD__ 917#define _DECLARE_C99_LDBL_MATH 1 918#endif 919 920// If we are getting operator new from the MSVC CRT, then allocation overloads 921// for align_val_t were added in 19.12, aka VS 2017 version 15.3. 922#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 923# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 924#elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new) 925 // We're deferring to Microsoft's STL to provide aligned new et al. We don't 926 // have it unless the language feature test macro is defined. 927# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 928#endif 929 930#if defined(__APPLE__) 931# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 932 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 933# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 934# endif 935#endif // defined(__APPLE__) 936 937#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 938 (defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 939 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606)) 940# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 941#endif 942 943#if defined(__APPLE__) || defined(__FreeBSD__) 944#define _LIBCPP_HAS_DEFAULTRUNELOCALE 945#endif 946 947#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 948#define _LIBCPP_WCTYPE_IS_MASK 949#endif 950 951#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) 952#define _LIBCPP_NO_HAS_CHAR8_T 953#endif 954 955// Deprecation macros. 956// 957// Deprecations warnings are always enabled, except when users explicitly opt-out 958// by defining _LIBCPP_DISABLE_DEPRECATION_WARNINGS. 959#if !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) 960# if __has_attribute(deprecated) 961# define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 962# elif _LIBCPP_STD_VER > 11 963# define _LIBCPP_DEPRECATED [[deprecated]] 964# else 965# define _LIBCPP_DEPRECATED 966# endif 967#else 968# define _LIBCPP_DEPRECATED 969#endif 970 971#if !defined(_LIBCPP_CXX03_LANG) 972# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 973#else 974# define _LIBCPP_DEPRECATED_IN_CXX11 975#endif 976 977#if _LIBCPP_STD_VER >= 14 978# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 979#else 980# define _LIBCPP_DEPRECATED_IN_CXX14 981#endif 982 983#if _LIBCPP_STD_VER >= 17 984# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 985#else 986# define _LIBCPP_DEPRECATED_IN_CXX17 987#endif 988 989// Macros to enter and leave a state where deprecation warnings are suppressed. 990#if !defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH) && \ 991 (defined(_LIBCPP_COMPILER_CLANG) || defined(_LIBCPP_COMPILER_GCC)) 992# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \ 993 _Pragma("GCC diagnostic push") \ 994 _Pragma("GCC diagnostic ignored \"-Wdeprecated\"") 995# define _LIBCPP_SUPPRESS_DEPRECATED_POP \ 996 _Pragma("GCC diagnostic pop") 997#endif 998#if !defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH) 999# define _LIBCPP_SUPPRESS_DEPRECATED_PUSH 1000# define _LIBCPP_SUPPRESS_DEPRECATED_POP 1001#endif 1002 1003#if _LIBCPP_STD_VER <= 11 1004# define _LIBCPP_EXPLICIT_AFTER_CXX11 1005#else 1006# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1007#endif 1008 1009#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1010# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1011#else 1012# define _LIBCPP_CONSTEXPR_AFTER_CXX11 1013#endif 1014 1015#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1016# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1017#else 1018# define _LIBCPP_CONSTEXPR_AFTER_CXX14 1019#endif 1020 1021#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1022# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1023#else 1024# define _LIBCPP_CONSTEXPR_AFTER_CXX17 1025#endif 1026 1027#if _LIBCPP_STD_VER > 17 && \ 1028 !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) && \ 1029 !defined(_LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED) 1030# define _LIBCPP_CONSTEXPR_AFTER_CXX17_WITH_IS_CONSTANT_EVALUATED constexpr 1031#else 1032# define _LIBCPP_CONSTEXPR_AFTER_CXX17_WITH_IS_CONSTANT_EVALUATED 1033#endif 1034 1035// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 1036// NODISCARD macros to the correct attribute. 1037#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1038# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 1039#elif defined(_LIBCPP_COMPILER_CLANG) && !defined(_LIBCPP_CXX03_LANG) 1040# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 1041#else 1042// We can't use GCC's [[gnu::warn_unused_result]] and 1043// __attribute__((warn_unused_result)), because GCC does not silence them via 1044// (void) cast. 1045# define _LIBCPP_NODISCARD_ATTRIBUTE 1046#endif 1047 1048// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1049// specified as such as an extension. 1050#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1051# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1052#else 1053# define _LIBCPP_NODISCARD_EXT 1054#endif 1055 1056#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1057 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1058# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1059#else 1060# define _LIBCPP_NODISCARD_AFTER_CXX17 1061#endif 1062 1063#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1064# define _LIBCPP_INLINE_VAR inline 1065#else 1066# define _LIBCPP_INLINE_VAR 1067#endif 1068 1069#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1070# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 1071#else 1072# define _LIBCPP_EXPLICIT_MOVE(x) (x) 1073#endif 1074 1075#ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG 1076#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1077#define _LIBCPP_CONSTEXPR_IF_NODEBUG 1078#else 1079#define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1080#endif 1081#endif 1082 1083#if __has_attribute(no_destroy) 1084# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__)) 1085#else 1086# define _LIBCPP_NO_DESTROY 1087#endif 1088 1089#ifndef _LIBCPP_HAS_NO_ASAN 1090_LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 1091 const void *, const void *, const void *, const void *); 1092#endif 1093 1094// Try to find out if RTTI is disabled. 1095// g++ and cl.exe have RTTI on by default and define a macro when it is. 1096// g++ only defines the macro in 4.3.2 and onwards. 1097#if !defined(_LIBCPP_NO_RTTI) 1098# if defined(__GNUC__) && \ 1099 ((__GNUC__ >= 5) || \ 1100 (__GNUC__ == 4 && (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && \ 1101 !defined(__GXX_RTTI) 1102# define _LIBCPP_NO_RTTI 1103# elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1104# define _LIBCPP_NO_RTTI 1105# endif 1106#endif 1107 1108#ifndef _LIBCPP_WEAK 1109#define _LIBCPP_WEAK __attribute__((__weak__)) 1110#endif 1111 1112// Thread API 1113#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1114 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1115 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1116 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1117# if defined(__FreeBSD__) || \ 1118 defined(__wasi__) || \ 1119 defined(__NetBSD__) || \ 1120 defined(__linux__) || \ 1121 defined(__GNU__) || \ 1122 defined(__APPLE__) || \ 1123 defined(__CloudABI__) || \ 1124 defined(__sun__) || \ 1125 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1126# define _LIBCPP_HAS_THREAD_API_PTHREAD 1127# elif defined(__Fuchsia__) 1128# define _LIBCPP_HAS_THREAD_API_C11 1129# elif defined(_LIBCPP_WIN32API) 1130# define _LIBCPP_HAS_THREAD_API_WIN32 1131# else 1132# error "No thread API" 1133# endif // _LIBCPP_HAS_THREAD_API 1134#endif // _LIBCPP_HAS_NO_THREADS 1135 1136#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1137#if defined(__ANDROID__) && __ANDROID_API__ >= 30 1138#define _LIBCPP_HAS_COND_CLOCKWAIT 1139#elif defined(_LIBCPP_GLIBC_PREREQ) 1140#if _LIBCPP_GLIBC_PREREQ(2, 30) 1141#define _LIBCPP_HAS_COND_CLOCKWAIT 1142#endif 1143#endif 1144#endif 1145 1146#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1147#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1148 _LIBCPP_HAS_NO_THREADS is not defined. 1149#endif 1150 1151#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1152#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1153 _LIBCPP_HAS_NO_THREADS is defined. 1154#endif 1155 1156#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1157#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1158 _LIBCPP_HAS_NO_THREADS is defined. 1159#endif 1160 1161#if defined(__STDCPP_THREADS__) && defined(_LIBCPP_HAS_NO_THREADS) 1162#error _LIBCPP_HAS_NO_THREADS cannot be set when __STDCPP_THREADS__ is set. 1163#endif 1164 1165#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(__STDCPP_THREADS__) 1166#define __STDCPP_THREADS__ 1 1167#endif 1168 1169// The glibc and Bionic implementation of pthreads implements 1170// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32 1171// mutexes have no destroy mechanism. 1172// 1173// This optimization can't be performed on Apple platforms, where 1174// pthread_mutex_destroy can allow the kernel to release resources. 1175// See https://llvm.org/D64298 for details. 1176// 1177// TODO(EricWF): Enable this optimization on Bionic after speaking to their 1178// respective stakeholders. 1179#if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) \ 1180 || (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) \ 1181 || defined(_LIBCPP_HAS_THREAD_API_WIN32) 1182# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION 1183#endif 1184 1185// Destroying a condvar is a nop on Windows. 1186// 1187// This optimization can't be performed on Apple platforms, where 1188// pthread_cond_destroy can allow the kernel to release resources. 1189// See https://llvm.org/D64298 for details. 1190// 1191// TODO(EricWF): This is potentially true for some pthread implementations 1192// as well. 1193#if (defined(_LIBCPP_HAS_THREAD_API_C11) && defined(__Fuchsia__)) || \ 1194 defined(_LIBCPP_HAS_THREAD_API_WIN32) 1195# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 1196#endif 1197 1198// Systems that use capability-based security (FreeBSD with Capsicum, 1199// Nuxi CloudABI) may only provide local filesystem access (using *at()). 1200// Functions like open(), rename(), unlink() and stat() should not be 1201// used, as they attempt to access the global filesystem namespace. 1202#ifdef __CloudABI__ 1203#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1204#endif 1205 1206// CloudABI is intended for running networked services. Processes do not 1207// have standard input and output channels. 1208#ifdef __CloudABI__ 1209#define _LIBCPP_HAS_NO_STDIN 1210#define _LIBCPP_HAS_NO_STDOUT 1211#endif 1212 1213// Some systems do not provide gets() in their C library, for security reasons. 1214#ifndef _LIBCPP_C_HAS_NO_GETS 1215# if defined(_LIBCPP_MSVCRT) || \ 1216 (defined(__FreeBSD_version) && __FreeBSD_version >= 1300043) 1217# define _LIBCPP_C_HAS_NO_GETS 1218# endif 1219#endif 1220 1221#if defined(__BIONIC__) || defined(__CloudABI__) || \ 1222 defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1223#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1224#endif 1225 1226// Thread-unsafe functions such as strtok() and localtime() 1227// are not available. 1228#ifdef __CloudABI__ 1229#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1230#endif 1231 1232#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1233# define _LIBCPP_HAS_C_ATOMIC_IMP 1234#elif defined(_LIBCPP_COMPILER_GCC) 1235# define _LIBCPP_HAS_GCC_ATOMIC_IMP 1236#endif 1237 1238#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && \ 1239 !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) && \ 1240 !defined(_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP)) \ 1241 || defined(_LIBCPP_HAS_NO_THREADS) 1242# define _LIBCPP_HAS_NO_ATOMIC_HEADER 1243#else 1244# ifndef _LIBCPP_ATOMIC_FLAG_TYPE 1245# define _LIBCPP_ATOMIC_FLAG_TYPE bool 1246# endif 1247# ifdef _LIBCPP_FREESTANDING 1248# define _LIBCPP_ATOMIC_ONLY_USE_BUILTINS 1249# endif 1250#endif 1251 1252#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1253#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1254#endif 1255 1256#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1257# if defined(__clang__) && __has_attribute(acquire_capability) 1258// Work around the attribute handling in clang. When both __declspec and 1259// __attribute__ are present, the processing goes awry preventing the definition 1260// of the types. 1261# if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1262# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1263# endif 1264# endif 1265#endif 1266 1267#ifndef _LIBCPP_THREAD_SAFETY_ANNOTATION 1268# ifdef _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1269# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) __attribute__((x)) 1270# else 1271# define _LIBCPP_THREAD_SAFETY_ANNOTATION(x) 1272# endif 1273#endif // _LIBCPP_THREAD_SAFETY_ANNOTATION 1274 1275#if __has_attribute(require_constant_initialization) 1276# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1277#else 1278# define _LIBCPP_SAFE_STATIC 1279#endif 1280 1281#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1282#define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1283#endif 1284 1285#if !__has_builtin(__builtin_is_constant_evaluated) && _GNUC_VER < 900 1286#define _LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED 1287#endif 1288 1289#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1290# if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1291# define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1292# endif 1293#endif 1294 1295#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1296# define _LIBCPP_DIAGNOSE_WARNING(...) \ 1297 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1298# define _LIBCPP_DIAGNOSE_ERROR(...) \ 1299 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1300#else 1301# define _LIBCPP_DIAGNOSE_WARNING(...) 1302# define _LIBCPP_DIAGNOSE_ERROR(...) 1303#endif 1304 1305// Use a function like macro to imply that it must be followed by a semicolon 1306#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1307# define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1308#elif __has_cpp_attribute(clang::fallthrough) 1309# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1310#elif __has_attribute(fallthrough) || _GNUC_VER >= 700 1311# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1312#else 1313# define _LIBCPP_FALLTHROUGH() ((void)0) 1314#endif 1315 1316#if __has_attribute(__nodebug__) 1317#define _LIBCPP_NODEBUG __attribute__((__nodebug__)) 1318#else 1319#define _LIBCPP_NODEBUG 1320#endif 1321 1322#ifndef _LIBCPP_NODEBUG_TYPE 1323#if __has_attribute(__nodebug__) && \ 1324 (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 900) 1325#define _LIBCPP_NODEBUG_TYPE __attribute__((nodebug)) 1326#else 1327#define _LIBCPP_NODEBUG_TYPE 1328#endif 1329#endif // !defined(_LIBCPP_NODEBUG_TYPE) 1330 1331#if defined(_LIBCPP_ABI_MICROSOFT) && \ 1332 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1333# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1334#else 1335# define _LIBCPP_DECLSPEC_EMPTY_BASES 1336#endif 1337 1338#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1339#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1340#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1341#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1342#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1343#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1344 1345#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1346#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1347#endif 1348 1349#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1350#define _LIBCPP_HAS_NO_IS_AGGREGATE 1351#endif 1352 1353#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1354#define _LIBCPP_HAS_NO_COROUTINES 1355#endif 1356 1357#if !defined(__cpp_impl_three_way_comparison) || __cpp_impl_three_way_comparison < 201907L 1358#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1359#endif 1360 1361// Decide whether to use availability macros. 1362#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1363 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1364 __has_feature(attribute_availability_with_strict) && \ 1365 __has_feature(attribute_availability_in_templates) && \ 1366 __has_extension(pragma_clang_attribute_external_declaration) 1367# ifdef __APPLE__ 1368# define _LIBCPP_USE_AVAILABILITY_APPLE 1369# endif 1370#endif 1371 1372// Define availability macros. 1373#if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1374# define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1375 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1376 __attribute__((availability(ios,strict,introduced=10.0))) \ 1377 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1378 __attribute__((availability(watchos,strict,introduced=3.0))) 1379# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS \ 1380 __attribute__((availability(macosx,strict,introduced=10.14))) \ 1381 __attribute__((availability(ios,strict,introduced=12.0))) \ 1382 __attribute__((availability(tvos,strict,introduced=12.0))) \ 1383 __attribute__((availability(watchos,strict,introduced=5.0))) 1384# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS \ 1385 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1386# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST \ 1387 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1388# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1389 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1390 __attribute__((availability(ios,strict,introduced=10.0))) \ 1391 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1392 __attribute__((availability(watchos,strict,introduced=3.0))) 1393# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1394 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1395 __attribute__((availability(ios,strict,introduced=10.0))) \ 1396 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1397 __attribute__((availability(watchos,strict,introduced=3.0))) 1398# define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1399 __attribute__((availability(ios,strict,introduced=6.0))) 1400# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1401 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1402 __attribute__((availability(ios,strict,introduced=7.0))) 1403# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1404 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1405 __attribute__((availability(ios,strict,introduced=7.0))) 1406# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1407 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1408 __attribute__((availability(ios,strict,introduced=7.0))) 1409# define _LIBCPP_AVAILABILITY_FILESYSTEM \ 1410 __attribute__((availability(macosx,strict,introduced=10.15))) \ 1411 __attribute__((availability(ios,strict,introduced=13.0))) \ 1412 __attribute__((availability(tvos,strict,introduced=13.0))) \ 1413 __attribute__((availability(watchos,strict,introduced=6.0))) 1414# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH \ 1415 _Pragma("clang attribute push(__attribute__((availability(macosx,strict,introduced=10.15))), apply_to=any(function,record))") \ 1416 _Pragma("clang attribute push(__attribute__((availability(ios,strict,introduced=13.0))), apply_to=any(function,record))") \ 1417 _Pragma("clang attribute push(__attribute__((availability(tvos,strict,introduced=13.0))), apply_to=any(function,record))") \ 1418 _Pragma("clang attribute push(__attribute__((availability(watchos,strict,introduced=6.0))), apply_to=any(function,record))") 1419# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP \ 1420 _Pragma("clang attribute pop") \ 1421 _Pragma("clang attribute pop") \ 1422 _Pragma("clang attribute pop") \ 1423 _Pragma("clang attribute pop") 1424#else 1425# define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1426# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1427# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1428# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1429# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1430# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1431# define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1432# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1433# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1434# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1435# define _LIBCPP_AVAILABILITY_FILESYSTEM 1436# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH 1437# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP 1438#endif 1439 1440// Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1441#ifdef _LIBCPP_NO_EXCEPTIONS 1442# define _LIBCPP_AVAILABILITY_FUTURE 1443# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1444# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS 1445# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS 1446#else 1447# define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1448# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1449# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1450# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1451#endif 1452 1453// The stream API was dropped and re-added in the dylib shipped on macOS 1454// and iOS. We can only assume the dylib to provide these definitions for 1455// macosx >= 10.9 and ios >= 7.0. Otherwise, the definitions are available 1456// from the headers, but not from the dylib. Explicit instantiation 1457// declarations for streams exist conditionally to this; if we provide 1458// an explicit instantiation declaration and we try to deploy to a dylib 1459// that does not provide those symbols, we'll get a load-time error. 1460#if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1461 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1462 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1463 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1464 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1465# define _LIBCPP_DO_NOT_ASSUME_STREAMS_EXPLICIT_INSTANTIATION_IN_DYLIB 1466#endif 1467 1468#if defined(_LIBCPP_COMPILER_IBM) 1469#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1470#endif 1471 1472#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1473# define _LIBCPP_PUSH_MACROS 1474# define _LIBCPP_POP_MACROS 1475#else 1476 // Don't warn about macro conflicts when we can restore them at the 1477 // end of the header. 1478# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1479# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1480# endif 1481# if defined(_LIBCPP_COMPILER_MSVC) 1482# define _LIBCPP_PUSH_MACROS \ 1483 __pragma(push_macro("min")) \ 1484 __pragma(push_macro("max")) 1485# define _LIBCPP_POP_MACROS \ 1486 __pragma(pop_macro("min")) \ 1487 __pragma(pop_macro("max")) 1488# else 1489# define _LIBCPP_PUSH_MACROS \ 1490 _Pragma("push_macro(\"min\")") \ 1491 _Pragma("push_macro(\"max\")") 1492# define _LIBCPP_POP_MACROS \ 1493 _Pragma("pop_macro(\"min\")") \ 1494 _Pragma("pop_macro(\"max\")") 1495# endif 1496#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1497 1498#ifndef _LIBCPP_NO_AUTO_LINK 1499# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1500# if defined(_DLL) 1501# pragma comment(lib, "c++.lib") 1502# else 1503# pragma comment(lib, "libc++.lib") 1504# endif 1505# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1506#endif // _LIBCPP_NO_AUTO_LINK 1507 1508#define _LIBCPP_UNUSED_VAR(x) ((void)(x)) 1509 1510// Configures the fopen close-on-exec mode character, if any. This string will 1511// be appended to any mode string used by fstream for fopen/fdopen. 1512// 1513// Not all platforms support this, but it helps avoid fd-leaks on platforms that 1514// do. 1515#if defined(__BIONIC__) 1516# define _LIBCPP_FOPEN_CLOEXEC_MODE "e" 1517#else 1518# define _LIBCPP_FOPEN_CLOEXEC_MODE 1519#endif 1520 1521#endif // __cplusplus 1522 1523#endif // _LIBCPP_CONFIG 1524