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