1 // -*- C++ -*- 2 //===--------------------------- __config ---------------------------------===// 3 // 4 // The LLVM Compiler Infrastructure 5 // 6 // This file is dual licensed under the MIT and the University of Illinois Open 7 // Source Licenses. See LICENSE.TXT for details. 8 // 9 //===----------------------------------------------------------------------===// 10 11 #ifndef _LIBCPP_CONFIG 12 #define _LIBCPP_CONFIG 13 14 #if defined(_MSC_VER) && !defined(__clang__) 15 # if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16 # define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 17 # endif 18 #endif 19 20 #ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 21 #pragma GCC system_header 22 #endif 23 24 #ifdef __cplusplus 25 26 #ifdef __GNUC__ 27 # define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__) 28 // The _GNUC_VER_NEW macro better represents the new GCC versioning scheme 29 // introduced in GCC 5.0. 30 # define _GNUC_VER_NEW (_GNUC_VER * 10 + __GNUC_PATCHLEVEL__) 31 #else 32 # define _GNUC_VER 0 33 # define _GNUC_VER_NEW 0 34 #endif 35 36 #define _LIBCPP_VERSION 8000 37 38 #ifndef _LIBCPP_ABI_VERSION 39 # define _LIBCPP_ABI_VERSION 1 40 #endif 41 42 #ifndef _LIBCPP_STD_VER 43 # if __cplusplus <= 201103L 44 # define _LIBCPP_STD_VER 11 45 # elif __cplusplus <= 201402L 46 # define _LIBCPP_STD_VER 14 47 # elif __cplusplus <= 201703L 48 # define _LIBCPP_STD_VER 17 49 # else 50 # define _LIBCPP_STD_VER 18 // current year, or date of c++2a ratification 51 # endif 52 #endif // _LIBCPP_STD_VER 53 54 #if defined(__ELF__) 55 # define _LIBCPP_OBJECT_FORMAT_ELF 1 56 #elif defined(__MACH__) 57 # define _LIBCPP_OBJECT_FORMAT_MACHO 1 58 #elif defined(_WIN32) 59 # define _LIBCPP_OBJECT_FORMAT_COFF 1 60 #elif defined(__wasm__) 61 # define _LIBCPP_OBJECT_FORMAT_WASM 1 62 #else 63 # error Unknown object file format 64 #endif 65 66 #if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 67 // Change short string representation so that string data starts at offset 0, 68 // improving its alignment in some cases. 69 # define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 70 // Fix deque iterator type in order to support incomplete types. 71 # define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 72 // Fix undefined behavior in how std::list stores its linked nodes. 73 # define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB 74 // Fix undefined behavior in how __tree stores its end and parent nodes. 75 # define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB 76 // Fix undefined behavior in how __hash_table stores its pointer types. 77 # define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB 78 # define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB 79 # define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE 80 // Don't use a nullptr_t simulation type in C++03 instead using C++11 nullptr 81 // provided under the alternate keyword __nullptr, which changes the mangling 82 // of nullptr_t. This option is ABI incompatible with GCC in C++03 mode. 83 # define _LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR 84 // Define the `pointer_safety` enum as a C++11 strongly typed enumeration 85 // instead of as a class simulating an enum. If this option is enabled 86 // `pointer_safety` and `get_pointer_safety()` will no longer be available 87 // in C++03. 88 # define _LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE 89 // Define a key function for `bad_function_call` in the library, to centralize 90 // its vtable and typeinfo to libc++ rather than having all other libraries 91 // using that class define their own copies. 92 # define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 93 // Enable optimized version of __do_get_(un)signed which avoids redundant copies. 94 # define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET 95 // Use the smallest possible integer type to represent the index of the variant. 96 // Previously libc++ used "unsigned int" exclusivly. 97 # define _LIBCPP_ABI_VARIANT_INDEX_TYPE_OPTIMIZATION 98 // Unstable attempt to provide a more optimized std::function 99 # define _LIBCPP_ABI_OPTIMIZED_FUNCTION 100 #elif _LIBCPP_ABI_VERSION == 1 101 # if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 102 // Enable compiling copies of now inline methods into the dylib to support 103 // applications compiled against older libraries. This is unnecessary with 104 // COFF dllexport semantics, since dllexport forces a non-inline definition 105 // of inline functions to be emitted anyway. Our own non-inline copy would 106 // conflict with the dllexport-emitted copy, so we disable it. 107 # define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS 108 # endif 109 // Feature macros for disabling pre ABI v1 features. All of these options 110 // are deprecated. 111 # if defined(__FreeBSD__) 112 # define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR 113 # endif 114 #endif 115 116 #ifdef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 117 #error "_LIBCPP_TRIVIAL_PAIR_COPY_CTOR" is no longer supported. \ 118 use _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR instead 119 #endif 120 121 #define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y 122 #define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) 123 124 #ifndef _LIBCPP_ABI_NAMESPACE 125 # define _LIBCPP_ABI_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION) 126 #endif 127 128 #if __cplusplus < 201103L 129 #define _LIBCPP_CXX03_LANG 130 #endif 131 132 #ifndef __has_attribute 133 #define __has_attribute(__x) 0 134 #endif 135 136 #ifndef __has_builtin 137 #define __has_builtin(__x) 0 138 #endif 139 140 #ifndef __has_extension 141 #define __has_extension(__x) 0 142 #endif 143 144 #ifndef __has_feature 145 #define __has_feature(__x) 0 146 #endif 147 148 #ifndef __has_cpp_attribute 149 #define __has_cpp_attribute(__x) 0 150 #endif 151 152 // '__is_identifier' returns '0' if '__x' is a reserved identifier provided by 153 // the compiler and '1' otherwise. 154 #ifndef __is_identifier 155 #define __is_identifier(__x) 1 156 #endif 157 158 #ifndef __has_declspec_attribute 159 #define __has_declspec_attribute(__x) 0 160 #endif 161 162 #define __has_keyword(__x) !(__is_identifier(__x)) 163 164 #ifndef __has_include 165 #define __has_include(...) 0 166 #endif 167 168 #if defined(__clang__) 169 # define _LIBCPP_COMPILER_CLANG 170 # ifndef __apple_build_version__ 171 # define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__) 172 # endif 173 #elif defined(__GNUC__) 174 # define _LIBCPP_COMPILER_GCC 175 #elif defined(_MSC_VER) 176 # define _LIBCPP_COMPILER_MSVC 177 #elif defined(__IBMCPP__) 178 # define _LIBCPP_COMPILER_IBM 179 #endif 180 181 #ifndef _LIBCPP_CLANG_VER 182 #define _LIBCPP_CLANG_VER 0 183 #endif 184 185 // FIXME: ABI detection should be done via compiler builtin macros. This 186 // is just a placeholder until Clang implements such macros. For now assume 187 // that Windows compilers pretending to be MSVC++ target the Microsoft ABI, 188 // and allow the user to explicitly specify the ABI to handle cases where this 189 // heuristic falls short. 190 #if defined(_LIBCPP_ABI_FORCE_ITANIUM) && defined(_LIBCPP_ABI_FORCE_MICROSOFT) 191 # error "Only one of _LIBCPP_ABI_FORCE_ITANIUM and _LIBCPP_ABI_FORCE_MICROSOFT can be defined" 192 #elif defined(_LIBCPP_ABI_FORCE_ITANIUM) 193 # define _LIBCPP_ABI_ITANIUM 194 #elif defined(_LIBCPP_ABI_FORCE_MICROSOFT) 195 # define _LIBCPP_ABI_MICROSOFT 196 #else 197 # if defined(_WIN32) && defined(_MSC_VER) 198 # define _LIBCPP_ABI_MICROSOFT 199 # else 200 # define _LIBCPP_ABI_ITANIUM 201 # endif 202 #endif 203 204 // Need to detect which libc we're using if we're on Linux. 205 #if defined(__linux__) 206 # include <features.h> 207 # if defined(__GLIBC_PREREQ) 208 # define _LIBCPP_GLIBC_PREREQ(a, b) __GLIBC_PREREQ(a, b) 209 # else 210 # define _LIBCPP_GLIBC_PREREQ(a, b) 0 211 # endif // defined(__GLIBC_PREREQ) 212 #endif // defined(__linux__) 213 214 #ifdef __LITTLE_ENDIAN__ 215 # if __LITTLE_ENDIAN__ 216 # define _LIBCPP_LITTLE_ENDIAN 217 # endif // __LITTLE_ENDIAN__ 218 #endif // __LITTLE_ENDIAN__ 219 220 #ifdef __BIG_ENDIAN__ 221 # if __BIG_ENDIAN__ 222 # define _LIBCPP_BIG_ENDIAN 223 # endif // __BIG_ENDIAN__ 224 #endif // __BIG_ENDIAN__ 225 226 #ifdef __BYTE_ORDER__ 227 # if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 228 # define _LIBCPP_LITTLE_ENDIAN 229 # elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 230 # define _LIBCPP_BIG_ENDIAN 231 # endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 232 #endif // __BYTE_ORDER__ 233 234 #ifdef __FreeBSD__ 235 # include <sys/endian.h> 236 # if _BYTE_ORDER == _LITTLE_ENDIAN 237 # define _LIBCPP_LITTLE_ENDIAN 238 # else // _BYTE_ORDER == _LITTLE_ENDIAN 239 # define _LIBCPP_BIG_ENDIAN 240 # endif // _BYTE_ORDER == _LITTLE_ENDIAN 241 # ifndef __LONG_LONG_SUPPORTED 242 # define _LIBCPP_HAS_NO_LONG_LONG 243 # endif // __LONG_LONG_SUPPORTED 244 #endif // __FreeBSD__ 245 246 #ifdef __NetBSD__ 247 # include <sys/endian.h> 248 # if _BYTE_ORDER == _LITTLE_ENDIAN 249 # define _LIBCPP_LITTLE_ENDIAN 250 # else // _BYTE_ORDER == _LITTLE_ENDIAN 251 # define _LIBCPP_BIG_ENDIAN 252 # endif // _BYTE_ORDER == _LITTLE_ENDIAN 253 # define _LIBCPP_HAS_QUICK_EXIT 254 #endif // __NetBSD__ 255 256 #if defined(_WIN32) 257 # define _LIBCPP_WIN32API 258 # define _LIBCPP_LITTLE_ENDIAN 259 # define _LIBCPP_SHORT_WCHAR 1 260 // Both MinGW and native MSVC provide a "MSVC"-like enviroment 261 # define _LIBCPP_MSVCRT_LIKE 262 // If mingw not explicitly detected, assume using MS C runtime only if 263 // a MS compatibility version is specified. 264 # if defined(_MSC_VER) && !defined(__MINGW32__) 265 # define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 266 # endif 267 # if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 268 # define _LIBCPP_HAS_BITSCAN64 269 # endif 270 # define _LIBCPP_HAS_OPEN_WITH_WCHAR 271 # if defined(_LIBCPP_MSVCRT) 272 # define _LIBCPP_HAS_QUICK_EXIT 273 # endif 274 275 // Some CRT APIs are unavailable to store apps 276 # if defined(WINAPI_FAMILY) 277 # include <winapifamily.h> 278 # if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 279 (!defined(WINAPI_PARTITION_SYSTEM) || \ 280 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 281 # define _LIBCPP_WINDOWS_STORE_APP 282 # endif 283 # endif 284 #endif // defined(_WIN32) 285 286 #ifdef __sun__ 287 # include <sys/isa_defs.h> 288 # ifdef _LITTLE_ENDIAN 289 # define _LIBCPP_LITTLE_ENDIAN 290 # else 291 # define _LIBCPP_BIG_ENDIAN 292 # endif 293 #endif // __sun__ 294 295 #if defined(__CloudABI__) 296 // Certain architectures provide arc4random(). Prefer using 297 // arc4random() over /dev/{u,}random to make it possible to obtain 298 // random data even when using sandboxing mechanisms such as chroots, 299 // Capsicum, etc. 300 # define _LIBCPP_USING_ARC4_RANDOM 301 #elif defined(__Fuchsia__) 302 # define _LIBCPP_USING_GETENTROPY 303 #elif defined(__native_client__) 304 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, 305 // including accesses to the special files under /dev. C++11's 306 // std::random_device is instead exposed through a NaCl syscall. 307 # define _LIBCPP_USING_NACL_RANDOM 308 #elif defined(_LIBCPP_WIN32API) 309 # define _LIBCPP_USING_WIN32_RANDOM 310 #else 311 # define _LIBCPP_USING_DEV_RANDOM 312 #endif 313 314 #if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 315 # include <endian.h> 316 # if __BYTE_ORDER == __LITTLE_ENDIAN 317 # define _LIBCPP_LITTLE_ENDIAN 318 # elif __BYTE_ORDER == __BIG_ENDIAN 319 # define _LIBCPP_BIG_ENDIAN 320 # else // __BYTE_ORDER == __BIG_ENDIAN 321 # error unable to determine endian 322 # endif 323 #endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 324 325 #if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 326 # define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 327 #else 328 # define _LIBCPP_NO_CFI 329 #endif 330 331 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 332 # if defined(__FreeBSD__) 333 # define _LIBCPP_HAS_QUICK_EXIT 334 # define _LIBCPP_HAS_C11_FEATURES 335 # elif defined(__Fuchsia__) 336 # define _LIBCPP_HAS_QUICK_EXIT 337 # define _LIBCPP_HAS_TIMESPEC_GET 338 # define _LIBCPP_HAS_C11_FEATURES 339 # elif defined(__linux__) 340 # if !defined(_LIBCPP_HAS_MUSL_LIBC) 341 # if _LIBCPP_GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 342 # define _LIBCPP_HAS_QUICK_EXIT 343 # endif 344 # if _LIBCPP_GLIBC_PREREQ(2, 17) 345 # define _LIBCPP_HAS_C11_FEATURES 346 # define _LIBCPP_HAS_TIMESPEC_GET 347 # endif 348 # else // defined(_LIBCPP_HAS_MUSL_LIBC) 349 # define _LIBCPP_HAS_QUICK_EXIT 350 # define _LIBCPP_HAS_TIMESPEC_GET 351 # define _LIBCPP_HAS_C11_FEATURES 352 # endif 353 # endif // __linux__ 354 #endif 355 356 #if defined(_LIBCPP_COMPILER_CLANG) 357 358 // _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for 359 // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility. 360 #if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 361 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2)) || \ 362 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 363 #define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 364 #endif 365 366 #if __has_feature(cxx_alignas) 367 # define _ALIGNAS_TYPE(x) alignas(x) 368 # define _ALIGNAS(x) alignas(x) 369 #else 370 # define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 371 # define _ALIGNAS(x) __attribute__((__aligned__(x))) 372 #endif 373 374 #if __cplusplus < 201103L 375 typedef __char16_t char16_t; 376 typedef __char32_t char32_t; 377 #endif 378 379 #if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS) 380 #define _LIBCPP_NO_EXCEPTIONS 381 #endif 382 383 #if !(__has_feature(cxx_rtti)) && !defined(_LIBCPP_NO_RTTI) 384 #define _LIBCPP_NO_RTTI 385 #endif 386 387 #if !(__has_feature(cxx_strong_enums)) 388 #define _LIBCPP_HAS_NO_STRONG_ENUMS 389 #endif 390 391 #if !(__has_feature(cxx_decltype)) 392 #define _LIBCPP_HAS_NO_DECLTYPE 393 #endif 394 395 #if __has_feature(cxx_attributes) 396 # define _LIBCPP_NORETURN [[noreturn]] 397 #else 398 # define _LIBCPP_NORETURN __attribute__ ((noreturn)) 399 #endif 400 401 #if !(__has_feature(cxx_lambdas)) 402 #define _LIBCPP_HAS_NO_LAMBDAS 403 #endif 404 405 #if !(__has_feature(cxx_nullptr)) 406 # if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 407 # define nullptr __nullptr 408 # else 409 # define _LIBCPP_HAS_NO_NULLPTR 410 # endif 411 #endif 412 413 #if !(__has_feature(cxx_rvalue_references)) 414 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 415 #endif 416 417 #if !(__has_feature(cxx_auto_type)) 418 #define _LIBCPP_HAS_NO_AUTO_TYPE 419 #endif 420 421 #if !(__has_feature(cxx_variadic_templates)) 422 #define _LIBCPP_HAS_NO_VARIADICS 423 #endif 424 425 #if !(__has_feature(cxx_generalized_initializers)) 426 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 427 #endif 428 429 #if __has_feature(is_base_of) 430 #define _LIBCPP_HAS_IS_BASE_OF 431 #endif 432 433 #if __has_feature(is_final) 434 #define _LIBCPP_HAS_IS_FINAL 435 #endif 436 437 // Objective-C++ features (opt-in) 438 #if __has_feature(objc_arc) 439 #define _LIBCPP_HAS_OBJC_ARC 440 #endif 441 442 #if __has_feature(objc_arc_weak) 443 #define _LIBCPP_HAS_OBJC_ARC_WEAK 444 #endif 445 446 #if !(__has_feature(cxx_constexpr)) 447 #define _LIBCPP_HAS_NO_CONSTEXPR 448 #endif 449 450 #if !(__has_feature(cxx_relaxed_constexpr)) 451 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 452 #endif 453 454 #if !(__has_feature(cxx_variable_templates)) 455 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 456 #endif 457 458 #if !(__has_feature(cxx_noexcept)) 459 #define _LIBCPP_HAS_NO_NOEXCEPT 460 #endif 461 462 #if __has_feature(underlying_type) 463 #define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 464 #endif 465 466 #if __has_feature(is_literal) 467 #define _LIBCPP_IS_LITERAL(T) __is_literal(T) 468 #endif 469 470 #if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 471 #define _LIBCPP_HAS_NO_ASAN 472 #endif 473 474 // Allow for build-time disabling of unsigned integer sanitization 475 #if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 476 #define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 477 #endif 478 479 #if __has_builtin(__builtin_launder) 480 #define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 481 #endif 482 483 #if !__is_identifier(__has_unique_object_representations) 484 #define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 485 #endif 486 487 #define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 488 489 // No apple compilers support ""d and ""y at this time. 490 #if _LIBCPP_CLANG_VER < 800 || defined(__apple_build_version__) 491 #define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS 492 #endif 493 494 #elif defined(_LIBCPP_COMPILER_GCC) 495 496 #define _ALIGNAS(x) __attribute__((__aligned__(x))) 497 #define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 498 499 #define _LIBCPP_NORETURN __attribute__((noreturn)) 500 501 #if _GNUC_VER >= 407 502 #define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 503 #define _LIBCPP_IS_LITERAL(T) __is_literal_type(T) 504 #define _LIBCPP_HAS_IS_FINAL 505 #endif 506 507 #if defined(__GNUC__) && _GNUC_VER >= 403 508 #define _LIBCPP_HAS_IS_BASE_OF 509 #endif 510 511 #if !__EXCEPTIONS && !defined(_LIBCPP_NO_EXCEPTIONS) 512 #define _LIBCPP_NO_EXCEPTIONS 513 #endif 514 515 // constexpr was added to GCC in 4.6. 516 #if _GNUC_VER < 406 517 # define _LIBCPP_HAS_NO_CONSTEXPR 518 // Can only use constexpr in c++11 mode. 519 #elif !defined(__GXX_EXPERIMENTAL_CXX0X__) && __cplusplus < 201103L 520 # define _LIBCPP_HAS_NO_CONSTEXPR 521 #endif 522 523 // Determine if GCC supports relaxed constexpr 524 #if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 525 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 526 #endif 527 528 // GCC 5 will support variable templates 529 #if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 530 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 531 #endif 532 533 #ifndef __GXX_EXPERIMENTAL_CXX0X__ 534 535 #define _LIBCPP_HAS_NO_DECLTYPE 536 #define _LIBCPP_HAS_NO_NULLPTR 537 #define _LIBCPP_HAS_NO_UNICODE_CHARS 538 #define _LIBCPP_HAS_NO_VARIADICS 539 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 540 #define _LIBCPP_HAS_NO_STRONG_ENUMS 541 #define _LIBCPP_HAS_NO_NOEXCEPT 542 543 #else // __GXX_EXPERIMENTAL_CXX0X__ 544 545 #if _GNUC_VER < 403 546 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 547 #endif 548 549 550 #if _GNUC_VER < 404 551 #define _LIBCPP_HAS_NO_DECLTYPE 552 #define _LIBCPP_HAS_NO_UNICODE_CHARS 553 #define _LIBCPP_HAS_NO_VARIADICS 554 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 555 #endif // _GNUC_VER < 404 556 557 #if _GNUC_VER < 406 558 #define _LIBCPP_HAS_NO_NOEXCEPT 559 #define _LIBCPP_HAS_NO_NULLPTR 560 #endif 561 562 #endif // __GXX_EXPERIMENTAL_CXX0X__ 563 564 #if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 565 #define _LIBCPP_HAS_NO_ASAN 566 #endif 567 568 #if _GNUC_VER >= 700 569 #define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER 570 #endif 571 572 #if _GNUC_VER >= 700 573 #define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS 574 #endif 575 576 #define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 577 578 #elif defined(_LIBCPP_COMPILER_MSVC) 579 580 #define _LIBCPP_TOSTRING2(x) #x 581 #define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 582 #define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 583 584 #if _MSC_VER < 1900 585 #error "MSVC versions prior to Visual Studio 2015 are not supported" 586 #endif 587 588 #define _LIBCPP_HAS_IS_BASE_OF 589 #define _LIBCPP_HAS_NO_CONSTEXPR 590 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 591 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 592 #define _LIBCPP_HAS_NO_NOEXCEPT 593 #define __alignof__ __alignof 594 #define _LIBCPP_NORETURN __declspec(noreturn) 595 #define _ALIGNAS(x) __declspec(align(x)) 596 #define _ALIGNAS_TYPE(x) alignas(x) 597 #define _LIBCPP_HAS_NO_VARIADICS 598 599 #define _LIBCPP_WEAK 600 601 #define _LIBCPP_HAS_NO_ASAN 602 603 #define _LIBCPP_ALWAYS_INLINE __forceinline 604 605 #define _LIBCPP_HAS_NO_VECTOR_EXTENSION 606 607 #elif defined(_LIBCPP_COMPILER_IBM) 608 609 #define _ALIGNAS(x) __attribute__((__aligned__(x))) 610 #define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 611 #define _ATTRIBUTE(x) __attribute__((x)) 612 #define _LIBCPP_NORETURN __attribute__((noreturn)) 613 614 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 615 #define _LIBCPP_HAS_NO_NOEXCEPT 616 #define _LIBCPP_HAS_NO_NULLPTR 617 #define _LIBCPP_HAS_NO_UNICODE_CHARS 618 #define _LIBCPP_HAS_IS_BASE_OF 619 #define _LIBCPP_HAS_IS_FINAL 620 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 621 622 #if defined(_AIX) 623 #define __MULTILOCALE_API 624 #endif 625 626 #define _LIBCPP_HAS_NO_ASAN 627 628 #define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 629 630 #define _LIBCPP_HAS_NO_VECTOR_EXTENSION 631 632 #endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 633 634 #if defined(_LIBCPP_OBJECT_FORMAT_COFF) 635 636 #ifdef _DLL 637 # define _LIBCPP_CRT_FUNC __declspec(dllimport) 638 #else 639 # define _LIBCPP_CRT_FUNC 640 #endif 641 642 #if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 643 # define _LIBCPP_DLL_VIS 644 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 645 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 646 # define _LIBCPP_OVERRIDABLE_FUNC_VIS 647 # define _LIBCPP_EXPORTED_FROM_ABI 648 #elif defined(_LIBCPP_BUILDING_LIBRARY) 649 # define _LIBCPP_DLL_VIS __declspec(dllexport) 650 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 651 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 652 # define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 653 # define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport) 654 #else 655 # define _LIBCPP_DLL_VIS __declspec(dllimport) 656 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 657 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 658 # define _LIBCPP_OVERRIDABLE_FUNC_VIS 659 # define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport) 660 #endif 661 662 #define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 663 #define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 664 #define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 665 #define _LIBCPP_HIDDEN 666 #define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 667 #define _LIBCPP_TEMPLATE_VIS 668 #define _LIBCPP_ENUM_VIS 669 670 #endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 671 672 #ifndef _LIBCPP_HIDDEN 673 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 674 # define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 675 # else 676 # define _LIBCPP_HIDDEN 677 # endif 678 #endif 679 680 #ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 681 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 682 // The inline should be removed once PR32114 is resolved 683 # define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 684 # else 685 # define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 686 # endif 687 #endif 688 689 #ifndef _LIBCPP_FUNC_VIS 690 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 691 # define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 692 # else 693 # define _LIBCPP_FUNC_VIS 694 # endif 695 #endif 696 697 #ifndef _LIBCPP_TYPE_VIS 698 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 699 # define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 700 # else 701 # define _LIBCPP_TYPE_VIS 702 # endif 703 #endif 704 705 #ifndef _LIBCPP_TEMPLATE_VIS 706 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 707 # if __has_attribute(__type_visibility__) 708 # define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 709 # else 710 # define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 711 # endif 712 # else 713 # define _LIBCPP_TEMPLATE_VIS 714 # endif 715 #endif 716 717 #ifndef _LIBCPP_EXPORTED_FROM_ABI 718 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 719 # define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default"))) 720 # else 721 # define _LIBCPP_EXPORTED_FROM_ABI 722 # endif 723 #endif 724 725 #ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 726 #define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 727 #endif 728 729 #ifndef _LIBCPP_EXCEPTION_ABI 730 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 731 # define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 732 # else 733 # define _LIBCPP_EXCEPTION_ABI 734 # endif 735 #endif 736 737 #ifndef _LIBCPP_ENUM_VIS 738 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 739 # define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 740 # else 741 # define _LIBCPP_ENUM_VIS 742 # endif 743 #endif 744 745 #ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 746 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 747 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 748 # else 749 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 750 # endif 751 #endif 752 753 #ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 754 #define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 755 #endif 756 757 #if __has_attribute(internal_linkage) 758 # define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage)) 759 #else 760 # define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE 761 #endif 762 763 #if __has_attribute(exclude_from_explicit_instantiation) 764 # define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__)) 765 #else 766 // Try to approximate the effect of exclude_from_explicit_instantiation 767 // (which is that entities are not assumed to be provided by explicit 768 // template instantitations in the dylib) by always inlining those entities. 769 # define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE 770 #endif 771 772 #ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU 773 # ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT 774 # define _LIBCPP_HIDE_FROM_ABI_PER_TU 0 775 # else 776 # define _LIBCPP_HIDE_FROM_ABI_PER_TU 1 777 # endif 778 #endif 779 780 #ifndef _LIBCPP_HIDE_FROM_ABI 781 # if _LIBCPP_HIDE_FROM_ABI_PER_TU 782 # define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE 783 # else 784 # define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION 785 # endif 786 #endif 787 788 #ifdef _LIBCPP_BUILDING_LIBRARY 789 # if _LIBCPP_ABI_VERSION > 1 790 # define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 791 # else 792 # define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 793 # endif 794 #else 795 # define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI 796 #endif 797 798 // Just so we can migrate to the new macros gradually. 799 #define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI 800 801 // Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect. 802 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE { 803 #define _LIBCPP_END_NAMESPACE_STD } } 804 #define _VSTD std::_LIBCPP_ABI_NAMESPACE 805 _LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD 806 807 #if _LIBCPP_STD_VER >= 17 808 #define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 809 _LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem { 810 #else 811 #define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \ 812 _LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem { 813 #endif 814 815 #define _LIBCPP_END_NAMESPACE_FILESYSTEM \ 816 _LIBCPP_END_NAMESPACE_STD } } 817 818 #define _VSTD_FS _VSTD::__fs::filesystem 819 820 #ifndef _LIBCPP_PREFERRED_OVERLOAD 821 # if __has_attribute(__enable_if__) 822 # define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 823 # endif 824 #endif 825 826 #ifndef _LIBCPP_HAS_NO_NOEXCEPT 827 # define _NOEXCEPT noexcept 828 # define _NOEXCEPT_(x) noexcept(x) 829 #else 830 # define _NOEXCEPT throw() 831 # define _NOEXCEPT_(x) 832 #endif 833 834 #if defined(_LIBCPP_DEBUG_USE_EXCEPTIONS) 835 # if !defined(_LIBCPP_DEBUG) 836 # error cannot use _LIBCPP_DEBUG_USE_EXCEPTIONS unless _LIBCPP_DEBUG is defined 837 # endif 838 # ifdef _LIBCPP_HAS_NO_NOEXCEPT 839 # define _NOEXCEPT_DEBUG 840 # define _NOEXCEPT_DEBUG_(x) 841 # else 842 # define _NOEXCEPT_DEBUG noexcept(false) 843 # define _NOEXCEPT_DEBUG_(x) noexcept(false) 844 # endif 845 #else 846 # define _NOEXCEPT_DEBUG _NOEXCEPT 847 # define _NOEXCEPT_DEBUG_(x) _NOEXCEPT_(x) 848 #endif 849 850 #ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 851 typedef unsigned short char16_t; 852 typedef unsigned int char32_t; 853 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS 854 855 #ifndef __SIZEOF_INT128__ 856 #define _LIBCPP_HAS_NO_INT128 857 #endif 858 859 #ifdef _LIBCPP_CXX03_LANG 860 # if __has_extension(c_static_assert) 861 # define static_assert(__b, __m) _Static_assert(__b, __m) 862 # else 863 extern "C++" { 864 template <bool> struct __static_assert_test; 865 template <> struct __static_assert_test<true> {}; 866 template <unsigned> struct __static_assert_check {}; 867 } 868 # define static_assert(__b, __m) \ 869 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \ 870 _LIBCPP_CONCAT(__t, __LINE__) 871 # endif // __has_extension(c_static_assert) 872 #endif // _LIBCPP_CXX03_LANG 873 874 #ifdef _LIBCPP_HAS_NO_DECLTYPE 875 // GCC 4.6 provides __decltype in all standard modes. 876 # if __has_keyword(__decltype) || _LIBCPP_CLANG_VER >= 304 || _GNUC_VER >= 406 877 # define decltype(__x) __decltype(__x) 878 # else 879 # define decltype(__x) __typeof__(__x) 880 # endif 881 #endif 882 883 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 884 # define _LIBCPP_CONSTEXPR 885 #else 886 # define _LIBCPP_CONSTEXPR constexpr 887 #endif 888 889 #ifdef _LIBCPP_CXX03_LANG 890 # define _LIBCPP_DEFAULT {} 891 #else 892 # define _LIBCPP_DEFAULT = default; 893 #endif 894 895 #ifdef _LIBCPP_CXX03_LANG 896 # define _LIBCPP_EQUAL_DELETE 897 #else 898 # define _LIBCPP_EQUAL_DELETE = delete 899 #endif 900 901 #ifdef __GNUC__ 902 # define _NOALIAS __attribute__((__malloc__)) 903 #else 904 # define _NOALIAS 905 #endif 906 907 #if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 908 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 909 # define _LIBCPP_EXPLICIT explicit 910 #else 911 # define _LIBCPP_EXPLICIT 912 #endif 913 914 #if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 915 #define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 916 #endif 917 918 #ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 919 # define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 920 # define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 921 __lx __v_; \ 922 _LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \ 923 _LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 924 _LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \ 925 }; 926 #else // _LIBCPP_HAS_NO_STRONG_ENUMS 927 # define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 928 # define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 929 #endif // _LIBCPP_HAS_NO_STRONG_ENUMS 930 931 #ifdef _LIBCPP_DEBUG 932 # if _LIBCPP_DEBUG == 0 933 # define _LIBCPP_DEBUG_LEVEL 1 934 # elif _LIBCPP_DEBUG == 1 935 # define _LIBCPP_DEBUG_LEVEL 2 936 # else 937 # error Supported values for _LIBCPP_DEBUG are 0 and 1 938 # endif 939 # if !defined(_LIBCPP_BUILDING_LIBRARY) 940 # define _LIBCPP_EXTERN_TEMPLATE(...) 941 # endif 942 #endif 943 944 #ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 945 #define _LIBCPP_EXTERN_TEMPLATE(...) 946 #define _LIBCPP_EXTERN_TEMPLATE2(...) 947 #endif 948 949 #ifndef _LIBCPP_EXTERN_TEMPLATE 950 #define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 951 #endif 952 953 #ifndef _LIBCPP_EXTERN_TEMPLATE2 954 #define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 955 #endif 956 957 #if defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__) 958 #define _LIBCPP_NONUNIQUE_RTTI_BIT (1ULL << 63) 959 #endif 960 961 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \ 962 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 963 #define _LIBCPP_LOCALE__L_EXTENSIONS 1 964 #endif 965 966 #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 967 // Most unix variants have catopen. These are the specific ones that don't. 968 # if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 969 # define _LIBCPP_HAS_CATOPEN 1 970 # endif 971 #endif 972 973 #ifdef __FreeBSD__ 974 #define _DECLARE_C99_LDBL_MATH 1 975 #endif 976 977 // If we are getting operator new from the MSVC CRT, then allocation overloads 978 // for align_val_t were added in 19.12, aka VS 2017 version 15.3. 979 #if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912 980 # define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 981 #elif defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_NO_VCRUNTIME) 982 # define _LIBCPP_DEFER_NEW_TO_VCRUNTIME 983 # if !defined(__cpp_aligned_new) 984 // We're defering to Microsoft's STL to provide aligned new et al. We don't 985 // have it unless the language feature test macro is defined. 986 # define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION 987 # endif 988 #endif 989 990 #if defined(__APPLE__) 991 # if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 992 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 993 # define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 994 # endif 995 #endif // defined(__APPLE__) 996 997 #if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 998 (defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \ 999 (!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606)) 1000 # define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 1001 #endif 1002 1003 #if defined(__APPLE__) || defined(__FreeBSD__) 1004 #define _LIBCPP_HAS_DEFAULTRUNELOCALE 1005 #endif 1006 1007 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 1008 #define _LIBCPP_WCTYPE_IS_MASK 1009 #endif 1010 1011 #if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t) 1012 #define _LIBCPP_NO_HAS_CHAR8_T 1013 #endif 1014 1015 // Deprecation macros. 1016 // Deprecations warnings are only enabled when _LIBCPP_ENABLE_DEPRECATION_WARNINGS is defined. 1017 #if defined(_LIBCPP_ENABLE_DEPRECATION_WARNINGS) 1018 # if __has_attribute(deprecated) 1019 # define _LIBCPP_DEPRECATED __attribute__ ((deprecated)) 1020 # elif _LIBCPP_STD_VER > 11 1021 # define _LIBCPP_DEPRECATED [[deprecated]] 1022 # else 1023 # define _LIBCPP_DEPRECATED 1024 # endif 1025 #else 1026 # define _LIBCPP_DEPRECATED 1027 #endif 1028 1029 #if !defined(_LIBCPP_CXX03_LANG) 1030 # define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED 1031 #else 1032 # define _LIBCPP_DEPRECATED_IN_CXX11 1033 #endif 1034 1035 #if _LIBCPP_STD_VER >= 14 1036 # define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED 1037 #else 1038 # define _LIBCPP_DEPRECATED_IN_CXX14 1039 #endif 1040 1041 #if _LIBCPP_STD_VER >= 17 1042 # define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED 1043 #else 1044 # define _LIBCPP_DEPRECATED_IN_CXX17 1045 #endif 1046 1047 #if _LIBCPP_STD_VER <= 11 1048 # define _LIBCPP_EXPLICIT_AFTER_CXX11 1049 #else 1050 # define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 1051 #endif 1052 1053 #if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1054 # define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 1055 #else 1056 # define _LIBCPP_CONSTEXPR_AFTER_CXX11 1057 #endif 1058 1059 #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1060 # define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 1061 #else 1062 # define _LIBCPP_CONSTEXPR_AFTER_CXX14 1063 #endif 1064 1065 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1066 # define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr 1067 #else 1068 # define _LIBCPP_CONSTEXPR_AFTER_CXX17 1069 #endif 1070 1071 // The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other 1072 // NODISCARD macros to the correct attribute. 1073 #if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC) 1074 # define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]] 1075 #elif defined(_LIBCPP_COMPILER_CLANG) && !defined(_LIBCPP_CXX03_LANG) 1076 # define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]] 1077 #else 1078 // We can't use GCC's [[gnu::warn_unused_result]] and 1079 // __attribute__((warn_unused_result)), because GCC does not silence them via 1080 // (void) cast. 1081 # define _LIBCPP_NODISCARD_ATTRIBUTE 1082 #endif 1083 1084 // _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not 1085 // specified as such as an extension. 1086 #if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT) 1087 # define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE 1088 #else 1089 # define _LIBCPP_NODISCARD_EXT 1090 #endif 1091 1092 #if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \ 1093 (_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD)) 1094 # define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE 1095 #else 1096 # define _LIBCPP_NODISCARD_AFTER_CXX17 1097 #endif 1098 1099 #if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L) 1100 # define _LIBCPP_INLINE_VAR inline 1101 #else 1102 # define _LIBCPP_INLINE_VAR 1103 #endif 1104 1105 #ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1106 # define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 1107 #else 1108 # define _LIBCPP_EXPLICIT_MOVE(x) (x) 1109 #endif 1110 1111 #ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG 1112 #if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 1113 #define _LIBCPP_CONSTEXPR_IF_NODEBUG 1114 #else 1115 #define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr 1116 #endif 1117 #endif 1118 1119 #ifndef _LIBCPP_HAS_NO_ASAN 1120 _LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 1121 const void *, const void *, const void *, const void *); 1122 #endif 1123 1124 // Try to find out if RTTI is disabled. 1125 // g++ and cl.exe have RTTI on by default and define a macro when it is. 1126 // g++ only defines the macro in 4.3.2 and onwards. 1127 #if !defined(_LIBCPP_NO_RTTI) 1128 # if defined(__GNUC__) && \ 1129 ((__GNUC__ >= 5) || \ 1130 (__GNUC__ == 4 && (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && \ 1131 !defined(__GXX_RTTI) 1132 # define _LIBCPP_NO_RTTI 1133 # elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 1134 # define _LIBCPP_NO_RTTI 1135 # endif 1136 #endif 1137 1138 #ifndef _LIBCPP_WEAK 1139 #define _LIBCPP_WEAK __attribute__((__weak__)) 1140 #endif 1141 1142 // Thread API 1143 #if !defined(_LIBCPP_HAS_NO_THREADS) && \ 1144 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 1145 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 1146 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1147 # if defined(__FreeBSD__) || \ 1148 defined(__Fuchsia__) || \ 1149 defined(__NetBSD__) || \ 1150 defined(__linux__) || \ 1151 defined(__GNU__) || \ 1152 defined(__APPLE__) || \ 1153 defined(__CloudABI__) || \ 1154 defined(__sun__) || \ 1155 (defined(__MINGW32__) && __has_include(<pthread.h>)) 1156 # define _LIBCPP_HAS_THREAD_API_PTHREAD 1157 # elif defined(_LIBCPP_WIN32API) 1158 # define _LIBCPP_HAS_THREAD_API_WIN32 1159 # else 1160 # error "No thread API" 1161 # endif // _LIBCPP_HAS_THREAD_API 1162 #endif // _LIBCPP_HAS_NO_THREADS 1163 1164 #if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1165 #error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1166 _LIBCPP_HAS_NO_THREADS is not defined. 1167 #endif 1168 1169 #if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1170 #error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1171 _LIBCPP_HAS_NO_THREADS is defined. 1172 #endif 1173 1174 #if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1175 #error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1176 _LIBCPP_HAS_NO_THREADS is defined. 1177 #endif 1178 1179 // Systems that use capability-based security (FreeBSD with Capsicum, 1180 // Nuxi CloudABI) may only provide local filesystem access (using *at()). 1181 // Functions like open(), rename(), unlink() and stat() should not be 1182 // used, as they attempt to access the global filesystem namespace. 1183 #ifdef __CloudABI__ 1184 #define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1185 #endif 1186 1187 // CloudABI is intended for running networked services. Processes do not 1188 // have standard input and output channels. 1189 #ifdef __CloudABI__ 1190 #define _LIBCPP_HAS_NO_STDIN 1191 #define _LIBCPP_HAS_NO_STDOUT 1192 #endif 1193 1194 #if defined(__BIONIC__) || defined(__CloudABI__) || \ 1195 defined(__Fuchsia__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1196 #define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1197 #endif 1198 1199 // Thread-unsafe functions such as strtok() and localtime() 1200 // are not available. 1201 #ifdef __CloudABI__ 1202 #define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1203 #endif 1204 1205 #if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1206 # define _LIBCPP_HAS_C_ATOMIC_IMP 1207 #elif _GNUC_VER > 407 1208 # define _LIBCPP_HAS_GCC_ATOMIC_IMP 1209 #endif 1210 1211 #if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \ 1212 || defined(_LIBCPP_HAS_NO_THREADS) 1213 #define _LIBCPP_HAS_NO_ATOMIC_HEADER 1214 #endif 1215 1216 #ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1217 #define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1218 #endif 1219 1220 #if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1221 # if defined(__clang__) && __has_attribute(acquire_capability) 1222 # define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1223 # endif 1224 #endif 1225 1226 #if __has_attribute(require_constant_initialization) 1227 # define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1228 #else 1229 # define _LIBCPP_SAFE_STATIC 1230 #endif 1231 1232 #if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1233 #define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1234 #endif 1235 1236 #if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1237 # if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1238 # define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1239 # endif 1240 #endif 1241 1242 #if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1243 # define _LIBCPP_DIAGNOSE_WARNING(...) \ 1244 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1245 # define _LIBCPP_DIAGNOSE_ERROR(...) \ 1246 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1247 #else 1248 # define _LIBCPP_DIAGNOSE_WARNING(...) 1249 # define _LIBCPP_DIAGNOSE_ERROR(...) 1250 #endif 1251 1252 // Use a function like macro to imply that it must be followed by a semicolon 1253 #if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 1254 # define _LIBCPP_FALLTHROUGH() [[fallthrough]] 1255 #elif __has_cpp_attribute(clang::fallthrough) 1256 # define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]] 1257 #elif __has_attribute(fallthough) || _GNUC_VER >= 700 1258 # define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1259 #else 1260 # define _LIBCPP_FALLTHROUGH() ((void)0) 1261 #endif 1262 1263 #if defined(_LIBCPP_ABI_MICROSOFT) && \ 1264 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1265 # define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1266 #else 1267 # define _LIBCPP_DECLSPEC_EMPTY_BASES 1268 #endif 1269 1270 #if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1271 #define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1272 #define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1273 #define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1274 #define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1275 #endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1276 1277 #if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1278 #define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1279 #endif 1280 1281 #if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1282 #define _LIBCPP_HAS_NO_IS_AGGREGATE 1283 #endif 1284 1285 #if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1286 #define _LIBCPP_HAS_NO_COROUTINES 1287 #endif 1288 1289 // FIXME: Correct this macro when either (A) a feature test macro for the 1290 // spaceship operator is provided, or (B) a compiler provides a complete 1291 // implementation. 1292 #define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR 1293 1294 // Decide whether to use availability macros. 1295 #if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1296 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1297 __has_feature(attribute_availability_with_strict) && \ 1298 __has_feature(attribute_availability_in_templates) 1299 # ifdef __APPLE__ 1300 # define _LIBCPP_USE_AVAILABILITY_APPLE 1301 # endif 1302 #endif 1303 1304 // Define availability macros. 1305 #if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1306 # define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1307 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1308 __attribute__((availability(ios,strict,introduced=10.0))) \ 1309 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1310 __attribute__((availability(watchos,strict,introduced=3.0))) 1311 # define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS \ 1312 __attribute__((availability(macosx,strict,introduced=10.14))) \ 1313 __attribute__((availability(ios,strict,introduced=12.0))) \ 1314 __attribute__((availability(tvos,strict,introduced=12.0))) \ 1315 __attribute__((availability(watchos,strict,introduced=5.0))) 1316 # define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS \ 1317 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1318 # define _LIBCPP_AVAILABILITY_BAD_ANY_CAST \ 1319 _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1320 # define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1321 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1322 __attribute__((availability(ios,strict,introduced=10.0))) \ 1323 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1324 __attribute__((availability(watchos,strict,introduced=3.0))) 1325 # define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1326 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1327 __attribute__((availability(ios,strict,introduced=10.0))) \ 1328 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1329 __attribute__((availability(watchos,strict,introduced=3.0))) 1330 # define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1331 __attribute__((availability(ios,strict,introduced=6.0))) 1332 # define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1333 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1334 __attribute__((availability(ios,strict,introduced=7.0))) 1335 # define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1336 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1337 __attribute__((availability(ios,strict,introduced=7.0))) 1338 # define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1339 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1340 __attribute__((availability(ios,strict,introduced=7.0))) 1341 #else 1342 # define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1343 # define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1344 # define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1345 # define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1346 # define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1347 # define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1348 # define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1349 # define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1350 # define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1351 # define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1352 #endif 1353 1354 // Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1355 #ifdef _LIBCPP_NO_EXCEPTIONS 1356 # define _LIBCPP_AVAILABILITY_FUTURE 1357 # define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1358 # define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS 1359 # define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS 1360 #else 1361 # define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1362 # define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1363 # define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1364 # define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS 1365 #endif 1366 1367 // The stream API was dropped and re-added in the dylib shipped on macOS 1368 // and iOS. We can only assume the dylib to provide these definitions for 1369 // macosx >= 10.9 and ios >= 7.0. Otherwise, the definitions are available 1370 // from the headers, but not from the dylib. Explicit instantiation 1371 // declarations for streams exist conditionally to this; if we provide 1372 // an explicit instantiation declaration and we try to deploy to a dylib 1373 // that does not provide those symbols, we'll get a load-time error. 1374 #if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1375 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1376 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1377 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1378 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1379 # define _LIBCPP_DO_NOT_ASSUME_STREAMS_EXPLICIT_INSTANTIATION_IN_DYLIB 1380 #endif 1381 1382 #if defined(_LIBCPP_COMPILER_IBM) 1383 #define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1384 #endif 1385 1386 #if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1387 # define _LIBCPP_PUSH_MACROS 1388 # define _LIBCPP_POP_MACROS 1389 #else 1390 // Don't warn about macro conflicts when we can restore them at the 1391 // end of the header. 1392 # ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1393 # define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1394 # endif 1395 # if defined(_LIBCPP_COMPILER_MSVC) 1396 # define _LIBCPP_PUSH_MACROS \ 1397 __pragma(push_macro("min")) \ 1398 __pragma(push_macro("max")) 1399 # define _LIBCPP_POP_MACROS \ 1400 __pragma(pop_macro("min")) \ 1401 __pragma(pop_macro("max")) 1402 # else 1403 # define _LIBCPP_PUSH_MACROS \ 1404 _Pragma("push_macro(\"min\")") \ 1405 _Pragma("push_macro(\"max\")") 1406 # define _LIBCPP_POP_MACROS \ 1407 _Pragma("pop_macro(\"min\")") \ 1408 _Pragma("pop_macro(\"max\")") 1409 # endif 1410 #endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1411 1412 #ifndef _LIBCPP_NO_AUTO_LINK 1413 # if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1414 # if defined(_DLL) 1415 # pragma comment(lib, "c++.lib") 1416 # else 1417 # pragma comment(lib, "libc++.lib") 1418 # endif 1419 # endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY) 1420 #endif // _LIBCPP_NO_AUTO_LINK 1421 1422 #endif // __cplusplus 1423 1424 #endif // _LIBCPP_CONFIG 1425
