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 6000 37 38 #ifndef _LIBCPP_ABI_VERSION 39 #define _LIBCPP_ABI_VERSION 1 40 #endif 41 42 #if defined(__ELF__) 43 #define _LIBCPP_OBJECT_FORMAT_ELF 1 44 #elif defined(__MACH__) 45 #define _LIBCPP_OBJECT_FORMAT_MACHO 1 46 #elif defined(_WIN32) 47 #define _LIBCPP_OBJECT_FORMAT_COFF 1 48 #else 49 #error Unknown object file format 50 #endif 51 52 #if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 53 // Change short string representation so that string data starts at offset 0, 54 // improving its alignment in some cases. 55 #define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 56 // Fix deque iterator type in order to support incomplete types. 57 #define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 58 // Fix undefined behavior in how std::list stores its linked nodes. 59 #define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB 60 // Fix undefined behavior in how __tree stores its end and parent nodes. 61 #define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB 62 // Fix undefined behavior in how __hash_table stores its pointer types. 63 #define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB 64 #define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB 65 #define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE 66 // Don't use a nullptr_t simulation type in C++03 instead using C++11 nullptr 67 // provided under the alternate keyword __nullptr, which changes the mangling 68 // of nullptr_t. This option is ABI incompatible with GCC in C++03 mode. 69 #define _LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR 70 // Define the `pointer_safety` enum as a C++11 strongly typed enumeration 71 // instead of as a class simulating an enum. If this option is enabled 72 // `pointer_safety` and `get_pointer_safety()` will no longer be available 73 // in C++03. 74 #define _LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE 75 // Define a key function for `bad_function_call` in the library, to centralize 76 // its vtable and typeinfo to libc++ rather than having all other libraries 77 // using that class define their own copies. 78 #define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 79 80 // Enable optimized version of __do_get_(un)signed which avoids redundant copies. 81 #define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET 82 #elif _LIBCPP_ABI_VERSION == 1 83 #if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 84 // Enable compiling copies of now inline methods into the dylib to support 85 // applications compiled against older libraries. This is unnecessary with 86 // COFF dllexport semantics, since dllexport forces a non-inline definition 87 // of inline functions to be emitted anyway. Our own non-inline copy would 88 // conflict with the dllexport-emitted copy, so we disable it. 89 #define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS 90 #endif 91 // Feature macros for disabling pre ABI v1 features. All of these options 92 // are deprecated. 93 #if defined(__FreeBSD__) 94 #define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR 95 #endif 96 #endif 97 98 #ifdef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 99 #error "_LIBCPP_TRIVIAL_PAIR_COPY_CTOR" is no longer supported. \ 100 use _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR instead 101 #endif 102 103 #define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y 104 #define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) 105 106 #define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION) 107 108 #if __cplusplus < 201103L 109 #define _LIBCPP_CXX03_LANG 110 #endif 111 112 #ifndef __has_attribute 113 #define __has_attribute(__x) 0 114 #endif 115 #ifndef __has_builtin 116 #define __has_builtin(__x) 0 117 #endif 118 #ifndef __has_extension 119 #define __has_extension(__x) 0 120 #endif 121 #ifndef __has_feature 122 #define __has_feature(__x) 0 123 #endif 124 // '__is_identifier' returns '0' if '__x' is a reserved identifier provided by 125 // the compiler and '1' otherwise. 126 #ifndef __is_identifier 127 #define __is_identifier(__x) 1 128 #endif 129 #ifndef __has_declspec_attribute 130 #define __has_declspec_attribute(__x) 0 131 #endif 132 133 #define __has_keyword(__x) !(__is_identifier(__x)) 134 135 #ifdef __has_include 136 #define __libcpp_has_include(__x) __has_include(__x) 137 #else 138 #define __libcpp_has_include(__x) 0 139 #endif 140 141 #if defined(__clang__) 142 #define _LIBCPP_COMPILER_CLANG 143 # ifndef __apple_build_version__ 144 # define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__) 145 # endif 146 #elif defined(__GNUC__) 147 #define _LIBCPP_COMPILER_GCC 148 #elif defined(_MSC_VER) 149 #define _LIBCPP_COMPILER_MSVC 150 #elif defined(__IBMCPP__) 151 #define _LIBCPP_COMPILER_IBM 152 #endif 153 154 #ifndef _LIBCPP_CLANG_VER 155 #define _LIBCPP_CLANG_VER 0 156 #endif 157 158 // FIXME: ABI detection should be done via compiler builtin macros. This 159 // is just a placeholder until Clang implements such macros. For now assume 160 // that Windows compilers pretending to be MSVC++ target the Microsoft ABI, 161 // and allow the user to explicitly specify the ABI to handle cases where this 162 // heuristic falls short. 163 #if defined(_LIBCPP_ABI_FORCE_ITANIUM) && defined(_LIBCPP_ABI_FORCE_MICROSOFT) 164 # error "Only one of _LIBCPP_ABI_FORCE_ITANIUM and _LIBCPP_ABI_FORCE_MICROSOFT can be defined" 165 #elif defined(_LIBCPP_ABI_FORCE_ITANIUM) 166 # define _LIBCPP_ABI_ITANIUM 167 #elif defined(_LIBCPP_ABI_FORCE_MICROSOFT) 168 # define _LIBCPP_ABI_MICROSOFT 169 #else 170 # if defined(_WIN32) && defined(_MSC_VER) 171 # define _LIBCPP_ABI_MICROSOFT 172 # else 173 # define _LIBCPP_ABI_ITANIUM 174 # endif 175 #endif 176 177 // Need to detect which libc we're using if we're on Linux. 178 #if defined(__linux__) 179 #include <features.h> 180 #if !defined(__GLIBC_PREREQ) 181 #define __GLIBC_PREREQ(a, b) 0 182 #endif // !defined(__GLIBC_PREREQ) 183 #endif // defined(__linux__) 184 185 #ifdef __LITTLE_ENDIAN__ 186 #if __LITTLE_ENDIAN__ 187 #define _LIBCPP_LITTLE_ENDIAN 188 #endif // __LITTLE_ENDIAN__ 189 #endif // __LITTLE_ENDIAN__ 190 191 #ifdef __BIG_ENDIAN__ 192 #if __BIG_ENDIAN__ 193 #define _LIBCPP_BIG_ENDIAN 194 #endif // __BIG_ENDIAN__ 195 #endif // __BIG_ENDIAN__ 196 197 #ifdef __BYTE_ORDER__ 198 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 199 #define _LIBCPP_LITTLE_ENDIAN 200 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 201 #define _LIBCPP_BIG_ENDIAN 202 #endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 203 #endif // __BYTE_ORDER__ 204 205 #ifdef __FreeBSD__ 206 # include <sys/endian.h> 207 # if _BYTE_ORDER == _LITTLE_ENDIAN 208 # define _LIBCPP_LITTLE_ENDIAN 209 # else // _BYTE_ORDER == _LITTLE_ENDIAN 210 # define _LIBCPP_BIG_ENDIAN 211 # endif // _BYTE_ORDER == _LITTLE_ENDIAN 212 # ifndef __LONG_LONG_SUPPORTED 213 # define _LIBCPP_HAS_NO_LONG_LONG 214 # endif // __LONG_LONG_SUPPORTED 215 #endif // __FreeBSD__ 216 217 #ifdef __NetBSD__ 218 # include <sys/endian.h> 219 # if _BYTE_ORDER == _LITTLE_ENDIAN 220 # define _LIBCPP_LITTLE_ENDIAN 221 # else // _BYTE_ORDER == _LITTLE_ENDIAN 222 # define _LIBCPP_BIG_ENDIAN 223 # endif // _BYTE_ORDER == _LITTLE_ENDIAN 224 # define _LIBCPP_HAS_QUICK_EXIT 225 #endif // __NetBSD__ 226 227 #if defined(_WIN32) 228 # define _LIBCPP_WIN32API 229 # define _LIBCPP_LITTLE_ENDIAN 230 # define _LIBCPP_SHORT_WCHAR 1 231 // Both MinGW and native MSVC provide a "MSVC"-like enviroment 232 # define _LIBCPP_MSVCRT_LIKE 233 // If mingw not explicitly detected, assume using MS C runtime only if 234 // a MS compatibility version is specified. 235 # if defined(_MSC_VER) && !defined(__MINGW32__) 236 # define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 237 # endif 238 # if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 239 # define _LIBCPP_HAS_BITSCAN64 240 # endif 241 # if defined(_LIBCPP_MSVCRT) 242 # define _LIBCPP_HAS_QUICK_EXIT 243 # endif 244 245 // Some CRT APIs are unavailable to store apps 246 #if defined(WINAPI_FAMILY) 247 #include <winapifamily.h> 248 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 249 (!defined(WINAPI_PARTITION_SYSTEM) || \ 250 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 251 #define _LIBCPP_WINDOWS_STORE_APP 252 #endif 253 #endif 254 #endif // defined(_WIN32) 255 256 #ifdef __sun__ 257 # include <sys/isa_defs.h> 258 # ifdef _LITTLE_ENDIAN 259 # define _LIBCPP_LITTLE_ENDIAN 260 # else 261 # define _LIBCPP_BIG_ENDIAN 262 # endif 263 #endif // __sun__ 264 265 #if defined(__CloudABI__) 266 // Certain architectures provide arc4random(). Prefer using 267 // arc4random() over /dev/{u,}random to make it possible to obtain 268 // random data even when using sandboxing mechanisms such as chroots, 269 // Capsicum, etc. 270 # define _LIBCPP_USING_ARC4_RANDOM 271 #elif defined(__native_client__) 272 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, 273 // including accesses to the special files under /dev. C++11's 274 // std::random_device is instead exposed through a NaCl syscall. 275 # define _LIBCPP_USING_NACL_RANDOM 276 #elif defined(_LIBCPP_WIN32API) 277 # define _LIBCPP_USING_WIN32_RANDOM 278 #else 279 # define _LIBCPP_USING_DEV_RANDOM 280 #endif 281 282 #if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 283 # include <endian.h> 284 # if __BYTE_ORDER == __LITTLE_ENDIAN 285 # define _LIBCPP_LITTLE_ENDIAN 286 # elif __BYTE_ORDER == __BIG_ENDIAN 287 # define _LIBCPP_BIG_ENDIAN 288 # else // __BYTE_ORDER == __BIG_ENDIAN 289 # error unable to determine endian 290 # endif 291 #endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN) 292 293 #if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 294 #define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 295 #else 296 #define _LIBCPP_NO_CFI 297 #endif 298 299 #if defined(_LIBCPP_COMPILER_CLANG) 300 301 // _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for 302 // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility. 303 #if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 304 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2)) || \ 305 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 306 #define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 307 #endif 308 309 #if __has_feature(cxx_alignas) 310 # define _ALIGNAS_TYPE(x) alignas(x) 311 # define _ALIGNAS(x) alignas(x) 312 #else 313 # define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 314 # define _ALIGNAS(x) __attribute__((__aligned__(x))) 315 #endif 316 317 #if __cplusplus < 201103L 318 typedef __char16_t char16_t; 319 typedef __char32_t char32_t; 320 #endif 321 322 #if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS) 323 #define _LIBCPP_NO_EXCEPTIONS 324 #endif 325 326 #if !(__has_feature(cxx_rtti)) && !defined(_LIBCPP_NO_RTTI) 327 #define _LIBCPP_NO_RTTI 328 #endif 329 330 #if !(__has_feature(cxx_strong_enums)) 331 #define _LIBCPP_HAS_NO_STRONG_ENUMS 332 #endif 333 334 #if !(__has_feature(cxx_decltype)) 335 #define _LIBCPP_HAS_NO_DECLTYPE 336 #endif 337 338 #if __has_feature(cxx_attributes) 339 # define _LIBCPP_NORETURN [[noreturn]] 340 #else 341 # define _LIBCPP_NORETURN __attribute__ ((noreturn)) 342 #endif 343 344 #if !(__has_feature(cxx_lambdas)) 345 #define _LIBCPP_HAS_NO_LAMBDAS 346 #endif 347 348 #if !(__has_feature(cxx_nullptr)) 349 # if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 350 # define nullptr __nullptr 351 # else 352 # define _LIBCPP_HAS_NO_NULLPTR 353 # endif 354 #endif 355 356 #if !(__has_feature(cxx_rvalue_references)) 357 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 358 #endif 359 360 #if !(__has_feature(cxx_auto_type)) 361 #define _LIBCPP_HAS_NO_AUTO_TYPE 362 #endif 363 364 #if !(__has_feature(cxx_variadic_templates)) 365 #define _LIBCPP_HAS_NO_VARIADICS 366 #endif 367 368 #if !(__has_feature(cxx_generalized_initializers)) 369 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 370 #endif 371 372 #if __has_feature(is_base_of) 373 # define _LIBCPP_HAS_IS_BASE_OF 374 #endif 375 376 #if __has_feature(is_final) 377 # define _LIBCPP_HAS_IS_FINAL 378 #endif 379 380 // Objective-C++ features (opt-in) 381 #if __has_feature(objc_arc) 382 #define _LIBCPP_HAS_OBJC_ARC 383 #endif 384 385 #if __has_feature(objc_arc_weak) 386 #define _LIBCPP_HAS_OBJC_ARC_WEAK 387 #endif 388 389 #if !(__has_feature(cxx_constexpr)) 390 #define _LIBCPP_HAS_NO_CONSTEXPR 391 #endif 392 393 #if !(__has_feature(cxx_relaxed_constexpr)) 394 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 395 #endif 396 397 #if !(__has_feature(cxx_variable_templates)) 398 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 399 #endif 400 401 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 402 #if defined(__FreeBSD__) 403 #define _LIBCPP_HAS_QUICK_EXIT 404 #define _LIBCPP_HAS_C11_FEATURES 405 #elif defined(__Fuchsia__) 406 #define _LIBCPP_HAS_QUICK_EXIT 407 #define _LIBCPP_HAS_C11_FEATURES 408 #elif defined(__linux__) 409 #if !defined(_LIBCPP_HAS_MUSL_LIBC) 410 #if __GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 411 #define _LIBCPP_HAS_QUICK_EXIT 412 #endif 413 #if __GLIBC_PREREQ(2, 17) 414 #define _LIBCPP_HAS_C11_FEATURES 415 #endif 416 #else // defined(_LIBCPP_HAS_MUSL_LIBC) 417 #define _LIBCPP_HAS_QUICK_EXIT 418 #define _LIBCPP_HAS_C11_FEATURES 419 #endif 420 #endif // __linux__ 421 #endif 422 423 #if !(__has_feature(cxx_noexcept)) 424 #define _LIBCPP_HAS_NO_NOEXCEPT 425 #endif 426 427 #if __has_feature(underlying_type) 428 # define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 429 #endif 430 431 #if __has_feature(is_literal) 432 # define _LIBCPP_IS_LITERAL(T) __is_literal(T) 433 #endif 434 435 // Inline namespaces are available in Clang regardless of C++ dialect. 436 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE { 437 #define _LIBCPP_END_NAMESPACE_STD } } 438 #define _VSTD std::_LIBCPP_NAMESPACE 439 440 namespace std { 441 inline namespace _LIBCPP_NAMESPACE { 442 } 443 } 444 445 #if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 446 #define _LIBCPP_HAS_NO_ASAN 447 #endif 448 449 // Allow for build-time disabling of unsigned integer sanitization 450 #if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 451 #define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 452 #endif 453 454 #elif defined(_LIBCPP_COMPILER_GCC) 455 456 #define _ALIGNAS(x) __attribute__((__aligned__(x))) 457 #define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 458 459 #define _LIBCPP_NORETURN __attribute__((noreturn)) 460 461 #if _GNUC_VER >= 407 462 #define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 463 #define _LIBCPP_IS_LITERAL(T) __is_literal_type(T) 464 #define _LIBCPP_HAS_IS_FINAL 465 #endif 466 467 #if defined(__GNUC__) && _GNUC_VER >= 403 468 # define _LIBCPP_HAS_IS_BASE_OF 469 #endif 470 471 #if !__EXCEPTIONS 472 #define _LIBCPP_NO_EXCEPTIONS 473 #endif 474 475 // constexpr was added to GCC in 4.6. 476 #if _GNUC_VER < 406 477 #define _LIBCPP_HAS_NO_CONSTEXPR 478 // Can only use constexpr in c++11 mode. 479 #elif !defined(__GXX_EXPERIMENTAL_CXX0X__) && __cplusplus < 201103L 480 #define _LIBCPP_HAS_NO_CONSTEXPR 481 #endif 482 483 // Determine if GCC supports relaxed constexpr 484 #if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 485 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 486 #endif 487 488 // GCC 5 will support variable templates 489 #if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 490 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 491 #endif 492 493 #ifndef __GXX_EXPERIMENTAL_CXX0X__ 494 #define _LIBCPP_HAS_NO_DECLTYPE 495 #define _LIBCPP_HAS_NO_NULLPTR 496 #define _LIBCPP_HAS_NO_UNICODE_CHARS 497 #define _LIBCPP_HAS_NO_VARIADICS 498 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 499 #define _LIBCPP_HAS_NO_STRONG_ENUMS 500 #define _LIBCPP_HAS_NO_NOEXCEPT 501 502 #else // __GXX_EXPERIMENTAL_CXX0X__ 503 504 #if _GNUC_VER < 403 505 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 506 #endif 507 508 509 #if _GNUC_VER < 404 510 #define _LIBCPP_HAS_NO_DECLTYPE 511 #define _LIBCPP_HAS_NO_UNICODE_CHARS 512 #define _LIBCPP_HAS_NO_VARIADICS 513 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 514 #endif // _GNUC_VER < 404 515 516 #if _GNUC_VER < 406 517 #define _LIBCPP_HAS_NO_NOEXCEPT 518 #define _LIBCPP_HAS_NO_NULLPTR 519 #endif 520 521 #endif // __GXX_EXPERIMENTAL_CXX0X__ 522 523 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_NAMESPACE { 524 #define _LIBCPP_END_NAMESPACE_STD } } 525 #define _VSTD std::_LIBCPP_NAMESPACE 526 527 namespace std { 528 inline namespace _LIBCPP_NAMESPACE { 529 } 530 } 531 532 #if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 533 #define _LIBCPP_HAS_NO_ASAN 534 #endif 535 536 #elif defined(_LIBCPP_COMPILER_MSVC) 537 538 #define _LIBCPP_TOSTRING2(x) #x 539 #define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 540 #define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 541 542 #if _MSC_VER < 1900 543 #error "MSVC versions prior to Visual Studio 2015 are not supported" 544 #endif 545 546 #define _LIBCPP_HAS_IS_BASE_OF 547 #define _LIBCPP_HAS_NO_CONSTEXPR 548 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 549 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 550 #if _MSC_VER <= 1800 551 #define _LIBCPP_HAS_NO_UNICODE_CHARS 552 #endif 553 #define _LIBCPP_HAS_NO_NOEXCEPT 554 #define __alignof__ __alignof 555 #define _LIBCPP_NORETURN __declspec(noreturn) 556 #define _ALIGNAS(x) __declspec(align(x)) 557 #define _LIBCPP_HAS_NO_VARIADICS 558 559 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { 560 #define _LIBCPP_END_NAMESPACE_STD } 561 #define _VSTD std 562 563 # define _LIBCPP_WEAK 564 namespace std { 565 } 566 567 #define _LIBCPP_HAS_NO_ASAN 568 569 #elif defined(_LIBCPP_COMPILER_IBM) 570 571 #define _ALIGNAS(x) __attribute__((__aligned__(x))) 572 #define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 573 #define _ATTRIBUTE(x) __attribute__((x)) 574 #define _LIBCPP_NORETURN __attribute__((noreturn)) 575 576 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 577 #define _LIBCPP_HAS_NO_NOEXCEPT 578 #define _LIBCPP_HAS_NO_NULLPTR 579 #define _LIBCPP_HAS_NO_UNICODE_CHARS 580 #define _LIBCPP_HAS_IS_BASE_OF 581 #define _LIBCPP_HAS_IS_FINAL 582 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 583 584 #if defined(_AIX) 585 #define __MULTILOCALE_API 586 #endif 587 588 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE { 589 #define _LIBCPP_END_NAMESPACE_STD } } 590 #define _VSTD std::_LIBCPP_NAMESPACE 591 592 namespace std { 593 inline namespace _LIBCPP_NAMESPACE { 594 } 595 } 596 597 #define _LIBCPP_HAS_NO_ASAN 598 599 #endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 600 601 #if defined(_LIBCPP_OBJECT_FORMAT_COFF) 602 #if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 603 # define _LIBCPP_DLL_VIS 604 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 605 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 606 # define _LIBCPP_OVERRIDABLE_FUNC_VIS 607 #elif defined(_LIBCPP_BUILDING_LIBRARY) 608 # define _LIBCPP_DLL_VIS __declspec(dllexport) 609 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 610 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 611 # define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 612 #else 613 # define _LIBCPP_DLL_VIS __declspec(dllimport) 614 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 615 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 616 # define _LIBCPP_OVERRIDABLE_FUNC_VIS 617 #endif 618 619 #define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 620 #define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 621 #define _LIBCPP_EXTERN_VIS _LIBCPP_DLL_VIS 622 #define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 623 #define _LIBCPP_HIDDEN 624 #define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 625 #define _LIBCPP_TEMPLATE_VIS 626 #define _LIBCPP_ENUM_VIS 627 628 #if defined(_LIBCPP_COMPILER_MSVC) 629 # define _LIBCPP_INLINE_VISIBILITY __forceinline 630 # define _LIBCPP_ALWAYS_INLINE __forceinline 631 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __forceinline 632 #else 633 # define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 634 # define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 635 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 636 #endif 637 #endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 638 639 #ifndef _LIBCPP_HIDDEN 640 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 641 #define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 642 #else 643 #define _LIBCPP_HIDDEN 644 #endif 645 #endif 646 647 #ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 648 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 649 // The inline should be removed once PR32114 is resolved 650 #define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 651 #else 652 #define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 653 #endif 654 #endif 655 656 #ifndef _LIBCPP_FUNC_VIS 657 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 658 #define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 659 #else 660 #define _LIBCPP_FUNC_VIS 661 #endif 662 #endif 663 664 #ifndef _LIBCPP_TYPE_VIS 665 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 666 # define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 667 # else 668 # define _LIBCPP_TYPE_VIS 669 # endif 670 #endif 671 672 #ifndef _LIBCPP_TEMPLATE_VIS 673 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 674 # if __has_attribute(__type_visibility__) 675 # define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 676 # else 677 # define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 678 # endif 679 # else 680 # define _LIBCPP_TEMPLATE_VIS 681 # endif 682 #endif 683 684 #ifndef _LIBCPP_EXTERN_VIS 685 # define _LIBCPP_EXTERN_VIS 686 #endif 687 688 #ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 689 # define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 690 #endif 691 692 #ifndef _LIBCPP_EXCEPTION_ABI 693 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 694 #define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 695 #else 696 #define _LIBCPP_EXCEPTION_ABI 697 #endif 698 #endif 699 700 #ifndef _LIBCPP_ENUM_VIS 701 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 702 # define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 703 # else 704 # define _LIBCPP_ENUM_VIS 705 # endif 706 #endif 707 708 #ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 709 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 710 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 711 # else 712 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 713 # endif 714 #endif 715 716 #ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 717 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 718 #endif 719 720 #ifndef _LIBCPP_INLINE_VISIBILITY 721 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 722 #define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__)) 723 #else 724 #define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 725 #endif 726 #endif 727 728 #ifndef _LIBCPP_ALWAYS_INLINE 729 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 730 #define _LIBCPP_ALWAYS_INLINE __attribute__ ((__visibility__("hidden"), __always_inline__)) 731 #else 732 #define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 733 #endif 734 #endif 735 736 #ifndef _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 737 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 738 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__visibility__("default"), __always_inline__)) 739 # else 740 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__always_inline__)) 741 # endif 742 #endif 743 744 #ifndef _LIBCPP_PREFERRED_OVERLOAD 745 # if __has_attribute(__enable_if__) 746 # define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 747 # endif 748 #endif 749 750 #ifndef _LIBCPP_HAS_NO_NOEXCEPT 751 # define _NOEXCEPT noexcept 752 # define _NOEXCEPT_(x) noexcept(x) 753 #else 754 # define _NOEXCEPT throw() 755 # define _NOEXCEPT_(x) 756 #endif 757 758 #if defined(_LIBCPP_DEBUG_USE_EXCEPTIONS) 759 # if !defined(_LIBCPP_DEBUG) 760 # error cannot use _LIBCPP_DEBUG_USE_EXCEPTIONS unless _LIBCPP_DEBUG is defined 761 # endif 762 # define _NOEXCEPT_DEBUG noexcept(false) 763 # define _NOEXCEPT_DEBUG_(x) noexcept(false) 764 #else 765 # define _NOEXCEPT_DEBUG _NOEXCEPT 766 # define _NOEXCEPT_DEBUG_(x) _NOEXCEPT_(x) 767 #endif 768 769 #ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 770 typedef unsigned short char16_t; 771 typedef unsigned int char32_t; 772 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS 773 774 #ifndef __SIZEOF_INT128__ 775 #define _LIBCPP_HAS_NO_INT128 776 #endif 777 778 #ifdef _LIBCPP_CXX03_LANG 779 # if __has_extension(c_static_assert) 780 # define static_assert(__b, __m) _Static_assert(__b, __m) 781 # else 782 extern "C++" { 783 template <bool> struct __static_assert_test; 784 template <> struct __static_assert_test<true> {}; 785 template <unsigned> struct __static_assert_check {}; 786 } 787 #define static_assert(__b, __m) \ 788 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \ 789 _LIBCPP_CONCAT(__t, __LINE__) 790 # endif // __has_extension(c_static_assert) 791 #endif // _LIBCPP_CXX03_LANG 792 793 #ifdef _LIBCPP_HAS_NO_DECLTYPE 794 // GCC 4.6 provides __decltype in all standard modes. 795 #if __has_keyword(__decltype) || _LIBCPP_CLANG_VER >= 304 || _GNUC_VER >= 406 796 # define decltype(__x) __decltype(__x) 797 #else 798 # define decltype(__x) __typeof__(__x) 799 #endif 800 #endif 801 802 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 803 #define _LIBCPP_CONSTEXPR 804 #else 805 #define _LIBCPP_CONSTEXPR constexpr 806 #endif 807 808 #ifdef _LIBCPP_CXX03_LANG 809 #define _LIBCPP_DEFAULT {} 810 #else 811 #define _LIBCPP_DEFAULT = default; 812 #endif 813 814 #ifdef _LIBCPP_CXX03_LANG 815 #define _LIBCPP_EQUAL_DELETE 816 #else 817 #define _LIBCPP_EQUAL_DELETE = delete 818 #endif 819 820 #ifdef __GNUC__ 821 #define _NOALIAS __attribute__((__malloc__)) 822 #else 823 #define _NOALIAS 824 #endif 825 826 #if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 827 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 828 # define _LIBCPP_EXPLICIT explicit 829 #else 830 # define _LIBCPP_EXPLICIT 831 #endif 832 833 #if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 834 # define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 835 #endif 836 837 #ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 838 #define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 839 #define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 840 __lx __v_; \ 841 _LIBCPP_ALWAYS_INLINE x(__lx __v) : __v_(__v) {} \ 842 _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 843 _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \ 844 }; 845 #else // _LIBCPP_HAS_NO_STRONG_ENUMS 846 #define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 847 #define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 848 #endif // _LIBCPP_HAS_NO_STRONG_ENUMS 849 850 #ifdef _LIBCPP_DEBUG 851 # if _LIBCPP_DEBUG == 0 852 # define _LIBCPP_DEBUG_LEVEL 1 853 # elif _LIBCPP_DEBUG == 1 854 # define _LIBCPP_DEBUG_LEVEL 2 855 # else 856 # error Supported values for _LIBCPP_DEBUG are 0 and 1 857 # endif 858 # if !defined(_LIBCPP_BUILDING_LIBRARY) 859 # define _LIBCPP_EXTERN_TEMPLATE(...) 860 # endif 861 #endif 862 863 #ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 864 #define _LIBCPP_EXTERN_TEMPLATE(...) 865 #define _LIBCPP_EXTERN_TEMPLATE2(...) 866 #endif 867 868 #ifndef _LIBCPP_EXTERN_TEMPLATE 869 #define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 870 #endif 871 872 #ifndef _LIBCPP_EXTERN_TEMPLATE2 873 #define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 874 #endif 875 876 #if defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__) 877 #define _LIBCPP_NONUNIQUE_RTTI_BIT (1ULL << 63) 878 #endif 879 880 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT) || \ 881 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 882 #define _LIBCPP_LOCALE__L_EXTENSIONS 1 883 #endif 884 885 #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 886 // Most unix variants have catopen. These are the specific ones that don't. 887 #if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 888 #define _LIBCPP_HAS_CATOPEN 1 889 #endif 890 #endif 891 892 #ifdef __FreeBSD__ 893 #define _DECLARE_C99_LDBL_MATH 1 894 #endif 895 896 #if defined(__APPLE__) 897 # if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 898 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 899 # define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 900 # endif 901 # if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) 902 # if __MAC_OS_X_VERSION_MIN_REQUIRED < 1060 903 # define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 904 # endif 905 # endif 906 #endif // defined(__APPLE__) 907 908 #if defined(__APPLE__) || defined(__FreeBSD__) 909 #define _LIBCPP_HAS_DEFAULTRUNELOCALE 910 #endif 911 912 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 913 #define _LIBCPP_WCTYPE_IS_MASK 914 #endif 915 916 #ifndef _LIBCPP_STD_VER 917 # if __cplusplus <= 201103L 918 # define _LIBCPP_STD_VER 11 919 # elif __cplusplus <= 201402L 920 # define _LIBCPP_STD_VER 14 921 # elif __cplusplus <= 201703L 922 # define _LIBCPP_STD_VER 17 923 # else 924 # define _LIBCPP_STD_VER 18 // current year, or date of c++2a ratification 925 # endif 926 #endif // _LIBCPP_STD_VER 927 928 #if _LIBCPP_STD_VER > 11 929 #define _LIBCPP_DEPRECATED [[deprecated]] 930 #else 931 #define _LIBCPP_DEPRECATED 932 #endif 933 934 #if _LIBCPP_STD_VER <= 11 935 #define _LIBCPP_EXPLICIT_AFTER_CXX11 936 #define _LIBCPP_DEPRECATED_AFTER_CXX11 937 #else 938 #define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 939 #define _LIBCPP_DEPRECATED_AFTER_CXX11 [[deprecated]] 940 #endif 941 942 #if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 943 #define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 944 #else 945 #define _LIBCPP_CONSTEXPR_AFTER_CXX11 946 #endif 947 948 #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 949 #define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 950 #else 951 #define _LIBCPP_CONSTEXPR_AFTER_CXX14 952 #endif 953 954 // FIXME: Remove all usages of this macro once compilers catch up. 955 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606L) 956 # define _LIBCPP_HAS_NO_INLINE_VARIABLES 957 #endif 958 959 #ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 960 # define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 961 #else 962 # define _LIBCPP_EXPLICIT_MOVE(x) (x) 963 #endif 964 965 #ifndef _LIBCPP_HAS_NO_ASAN 966 _LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 967 const void *, const void *, const void *, const void *); 968 #endif 969 970 // Try to find out if RTTI is disabled. 971 // g++ and cl.exe have RTTI on by default and define a macro when it is. 972 // g++ only defines the macro in 4.3.2 and onwards. 973 #if !defined(_LIBCPP_NO_RTTI) 974 # if defined(__GNUC__) && ((__GNUC__ >= 5) || (__GNUC__ == 4 && \ 975 (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && !defined(__GXX_RTTI) 976 # define _LIBCPP_NO_RTTI 977 # elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 978 # define _LIBCPP_NO_RTTI 979 # endif 980 #endif 981 982 #ifndef _LIBCPP_WEAK 983 # define _LIBCPP_WEAK __attribute__((__weak__)) 984 #endif 985 986 // Thread API 987 #if !defined(_LIBCPP_HAS_NO_THREADS) && \ 988 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 989 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 990 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 991 # if defined(__FreeBSD__) || \ 992 defined(__Fuchsia__) || \ 993 defined(__NetBSD__) || \ 994 defined(__linux__) || \ 995 defined(__APPLE__) || \ 996 defined(__CloudABI__) || \ 997 defined(__sun__) || \ 998 (defined(__MINGW32__) && __libcpp_has_include(<pthread.h>)) 999 # define _LIBCPP_HAS_THREAD_API_PTHREAD 1000 # elif defined(_LIBCPP_WIN32API) 1001 # define _LIBCPP_HAS_THREAD_API_WIN32 1002 # else 1003 # error "No thread API" 1004 # endif // _LIBCPP_HAS_THREAD_API 1005 #endif // _LIBCPP_HAS_NO_THREADS 1006 1007 #if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1008 # error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1009 _LIBCPP_HAS_NO_THREADS is not defined. 1010 #endif 1011 1012 #if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1013 # error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1014 _LIBCPP_HAS_NO_THREADS is defined. 1015 #endif 1016 1017 #if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1018 # error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1019 _LIBCPP_HAS_NO_THREADS is defined. 1020 #endif 1021 1022 // Systems that use capability-based security (FreeBSD with Capsicum, 1023 // Nuxi CloudABI) may only provide local filesystem access (using *at()). 1024 // Functions like open(), rename(), unlink() and stat() should not be 1025 // used, as they attempt to access the global filesystem namespace. 1026 #ifdef __CloudABI__ 1027 #define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1028 #endif 1029 1030 // CloudABI is intended for running networked services. Processes do not 1031 // have standard input and output channels. 1032 #ifdef __CloudABI__ 1033 #define _LIBCPP_HAS_NO_STDIN 1034 #define _LIBCPP_HAS_NO_STDOUT 1035 #endif 1036 1037 #if defined(__BIONIC__) || defined(__CloudABI__) || \ 1038 defined(__Fuchsia__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1039 #define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1040 #endif 1041 1042 // Thread-unsafe functions such as strtok() and localtime() 1043 // are not available. 1044 #ifdef __CloudABI__ 1045 #define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1046 #endif 1047 1048 #if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1049 #define _LIBCPP_HAS_C_ATOMIC_IMP 1050 #elif _GNUC_VER > 407 1051 #define _LIBCPP_HAS_GCC_ATOMIC_IMP 1052 #endif 1053 1054 #if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \ 1055 || defined(_LIBCPP_HAS_NO_THREADS) 1056 #define _LIBCPP_HAS_NO_ATOMIC_HEADER 1057 #endif 1058 1059 #ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1060 #define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1061 #endif 1062 1063 #if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1064 #if defined(__clang__) && __has_attribute(acquire_capability) 1065 // Work around the attribute handling in clang. When both __declspec and 1066 // __attribute__ are present, the processing goes awry preventing the definition 1067 // of the types. 1068 #if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1069 #define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1070 #endif 1071 #endif 1072 #endif 1073 1074 #if __has_attribute(require_constant_initialization) 1075 #define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1076 #else 1077 #define _LIBCPP_SAFE_STATIC 1078 #endif 1079 1080 #if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1081 # define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1082 #endif 1083 1084 #if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1085 #if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1086 #define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1087 #endif 1088 #endif 1089 1090 #if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1091 # define _LIBCPP_DIAGNOSE_WARNING(...) \ 1092 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1093 # define _LIBCPP_DIAGNOSE_ERROR(...) \ 1094 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1095 #else 1096 # define _LIBCPP_DIAGNOSE_WARNING(...) 1097 # define _LIBCPP_DIAGNOSE_ERROR(...) 1098 #endif 1099 1100 #if __has_attribute(fallthough) || _GNUC_VER >= 700 1101 // Use a function like macro to imply that it must be followed by a semicolon 1102 #define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1103 #else 1104 #define _LIBCPP_FALLTHROUGH() ((void)0) 1105 #endif 1106 1107 #if defined(_LIBCPP_ABI_MICROSOFT) && \ 1108 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1109 # define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1110 #else 1111 # define _LIBCPP_DECLSPEC_EMPTY_BASES 1112 #endif 1113 1114 #if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1115 # define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1116 # define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1117 # define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1118 # define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1119 #endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1120 1121 #if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1122 # define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1123 #endif 1124 1125 #if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1126 # define _LIBCPP_HAS_NO_IS_AGGREGATE 1127 #endif 1128 1129 #if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1130 # define _LIBCPP_HAS_NO_COROUTINES 1131 #endif 1132 1133 // Decide whether to use availability macros. 1134 #if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1135 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1136 __has_feature(attribute_availability_with_strict) && \ 1137 __has_feature(attribute_availability_in_templates) 1138 #ifdef __APPLE__ 1139 #define _LIBCPP_USE_AVAILABILITY_APPLE 1140 #endif 1141 #endif 1142 1143 // Define availability macros. 1144 #if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1145 #define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1146 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1147 __attribute__((availability(ios,strict,introduced=10.0))) \ 1148 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1149 __attribute__((availability(watchos,strict,introduced=3.0))) 1150 #define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS __attribute__((unavailable)) 1151 #define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH __attribute__((unavailable)) 1152 #define _LIBCPP_AVAILABILITY_BAD_ANY_CAST __attribute__((unavailable)) 1153 #define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1154 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1155 __attribute__((availability(ios,strict,introduced=10.0))) \ 1156 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1157 __attribute__((availability(watchos,strict,introduced=3.0))) 1158 #define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1159 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1160 __attribute__((availability(ios,strict,introduced=10.0))) \ 1161 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1162 __attribute__((availability(watchos,strict,introduced=3.0))) 1163 #define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1164 __attribute__((availability(ios,strict,introduced=6.0))) 1165 #define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1166 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1167 __attribute__((availability(ios,strict,introduced=7.0))) 1168 #define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1169 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1170 __attribute__((availability(ios,strict,introduced=7.0))) 1171 #define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1172 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1173 __attribute__((availability(ios,strict,introduced=7.0))) 1174 #else 1175 #define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1176 #define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1177 #define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1178 #define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1179 #define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1180 #define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1181 #define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1182 #define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1183 #define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1184 #define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1185 #endif 1186 1187 // Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1188 #ifdef _LIBCPP_NO_EXCEPTIONS 1189 #define _LIBCPP_AVAILABILITY_DYNARRAY 1190 #define _LIBCPP_AVAILABILITY_FUTURE 1191 #define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1192 #else 1193 #define _LIBCPP_AVAILABILITY_DYNARRAY _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1194 #define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1195 #define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST \ 1196 _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1197 #endif 1198 1199 // Availability of stream API in the dylib got dropped and re-added. The 1200 // extern template should effectively be available at: 1201 // availability(macosx,introduced=10.9) 1202 // availability(ios,introduced=7.0) 1203 #if defined(_LIBCPP_USE_AVAILABILITY_APPLE) && \ 1204 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1205 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1206 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1207 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1208 #define _LIBCPP_AVAILABILITY_NO_STREAMS_EXTERN_TEMPLATE 1209 #endif 1210 1211 #if defined(_LIBCPP_COMPILER_IBM) 1212 #define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1213 #endif 1214 1215 #if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1216 # define _LIBCPP_PUSH_MACROS 1217 # define _LIBCPP_POP_MACROS 1218 #else 1219 // Don't warn about macro conflicts when we can restore them at the 1220 // end of the header. 1221 # ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1222 # define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1223 # endif 1224 # if defined(_LIBCPP_COMPILER_MSVC) 1225 # define _LIBCPP_PUSH_MACROS \ 1226 __pragma(push_macro("min")) \ 1227 __pragma(push_macro("max")) 1228 # define _LIBCPP_POP_MACROS \ 1229 __pragma(pop_macro("min")) \ 1230 __pragma(pop_macro("max")) 1231 # else 1232 # define _LIBCPP_PUSH_MACROS \ 1233 _Pragma("push_macro(\"min\")") \ 1234 _Pragma("push_macro(\"max\")") 1235 # define _LIBCPP_POP_MACROS \ 1236 _Pragma("pop_macro(\"min\")") \ 1237 _Pragma("pop_macro(\"max\")") 1238 # endif 1239 #endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1240 1241 1242 #endif // __cplusplus 1243 1244 #endif // _LIBCPP_CONFIG 1245
