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