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 5000 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 it's 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 it's 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 #if defined(_WIN32) && defined(_MSC_VER) 162 # define _LIBCPP_ABI_MICROSOFT 163 #else 164 # define _LIBCPP_ABI_ITANIUM 165 #endif 166 167 // Need to detect which libc we're using if we're on Linux. 168 #if defined(__linux__) 169 #include <features.h> 170 #if !defined(__GLIBC_PREREQ) 171 #define __GLIBC_PREREQ(a, b) 0 172 #endif // !defined(__GLIBC_PREREQ) 173 #endif // defined(__linux__) 174 175 #ifdef __LITTLE_ENDIAN__ 176 #if __LITTLE_ENDIAN__ 177 #define _LIBCPP_LITTLE_ENDIAN 1 178 #define _LIBCPP_BIG_ENDIAN 0 179 #endif // __LITTLE_ENDIAN__ 180 #endif // __LITTLE_ENDIAN__ 181 182 #ifdef __BIG_ENDIAN__ 183 #if __BIG_ENDIAN__ 184 #define _LIBCPP_LITTLE_ENDIAN 0 185 #define _LIBCPP_BIG_ENDIAN 1 186 #endif // __BIG_ENDIAN__ 187 #endif // __BIG_ENDIAN__ 188 189 #ifdef __BYTE_ORDER__ 190 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 191 #define _LIBCPP_LITTLE_ENDIAN 1 192 #define _LIBCPP_BIG_ENDIAN 0 193 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 194 #define _LIBCPP_LITTLE_ENDIAN 0 195 #define _LIBCPP_BIG_ENDIAN 1 196 #endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 197 #endif // __BYTE_ORDER__ 198 199 #ifdef __FreeBSD__ 200 # include <sys/endian.h> 201 # if _BYTE_ORDER == _LITTLE_ENDIAN 202 # define _LIBCPP_LITTLE_ENDIAN 1 203 # define _LIBCPP_BIG_ENDIAN 0 204 # else // _BYTE_ORDER == _LITTLE_ENDIAN 205 # define _LIBCPP_LITTLE_ENDIAN 0 206 # define _LIBCPP_BIG_ENDIAN 1 207 # endif // _BYTE_ORDER == _LITTLE_ENDIAN 208 # ifndef __LONG_LONG_SUPPORTED 209 # define _LIBCPP_HAS_NO_LONG_LONG 210 # endif // __LONG_LONG_SUPPORTED 211 #endif // __FreeBSD__ 212 213 #ifdef __NetBSD__ 214 # include <sys/endian.h> 215 # if _BYTE_ORDER == _LITTLE_ENDIAN 216 # define _LIBCPP_LITTLE_ENDIAN 1 217 # define _LIBCPP_BIG_ENDIAN 0 218 # else // _BYTE_ORDER == _LITTLE_ENDIAN 219 # define _LIBCPP_LITTLE_ENDIAN 0 220 # define _LIBCPP_BIG_ENDIAN 1 221 # endif // _BYTE_ORDER == _LITTLE_ENDIAN 222 # define _LIBCPP_HAS_QUICK_EXIT 223 #endif // __NetBSD__ 224 225 #if defined(_WIN32) 226 # define _LIBCPP_WIN32API 227 # define _LIBCPP_LITTLE_ENDIAN 1 228 # define _LIBCPP_BIG_ENDIAN 0 229 # define _LIBCPP_SHORT_WCHAR 1 230 // Both MinGW and native MSVC provide a "MSVC"-like enviroment 231 # define _LIBCPP_MSVCRT_LIKE 232 // If mingw not explicitly detected, assume using MS C runtime only. 233 # ifndef __MINGW32__ 234 # define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 235 # endif 236 # if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 237 # define _LIBCPP_HAS_BITSCAN64 238 # endif 239 # if defined(_LIBCPP_MSVCRT) 240 # define _LIBCPP_HAS_QUICK_EXIT 241 # endif 242 243 // Some CRT APIs are unavailable to store apps 244 #if defined(WINAPI_FAMILY) 245 #include <winapifamily.h> 246 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 247 (!defined(WINAPI_PARTITION_SYSTEM) || \ 248 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 249 #define _LIBCPP_WINDOWS_STORE_APP 250 #endif 251 #endif 252 #endif // defined(_WIN32) 253 254 #ifdef __sun__ 255 # include <sys/isa_defs.h> 256 # ifdef _LITTLE_ENDIAN 257 # define _LIBCPP_LITTLE_ENDIAN 1 258 # define _LIBCPP_BIG_ENDIAN 0 259 # else 260 # define _LIBCPP_LITTLE_ENDIAN 0 261 # define _LIBCPP_BIG_ENDIAN 1 262 # 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 1 286 # define _LIBCPP_BIG_ENDIAN 0 287 # elif __BYTE_ORDER == __BIG_ENDIAN 288 # define _LIBCPP_LITTLE_ENDIAN 0 289 # define _LIBCPP_BIG_ENDIAN 1 290 # else // __BYTE_ORDER == __BIG_ENDIAN 291 # error unable to determine endian 292 # endif 293 #endif // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN) 294 295 #if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 296 #define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 297 #else 298 #define _LIBCPP_NO_CFI 299 #endif 300 301 #if defined(_LIBCPP_COMPILER_CLANG) 302 303 // _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for 304 // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility. 305 #if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 306 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2)) || \ 307 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 308 #define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 309 #endif 310 311 #if __has_feature(cxx_alignas) 312 # define _ALIGNAS_TYPE(x) alignas(x) 313 # define _ALIGNAS(x) alignas(x) 314 #else 315 # define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 316 # define _ALIGNAS(x) __attribute__((__aligned__(x))) 317 #endif 318 319 #if __cplusplus < 201103L 320 typedef __char16_t char16_t; 321 typedef __char32_t char32_t; 322 #endif 323 324 #if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS) 325 #define _LIBCPP_NO_EXCEPTIONS 326 #endif 327 328 #if !(__has_feature(cxx_rtti)) && !defined(_LIBCPP_NO_RTTI) 329 #define _LIBCPP_NO_RTTI 330 #endif 331 332 #if !(__has_feature(cxx_strong_enums)) 333 #define _LIBCPP_HAS_NO_STRONG_ENUMS 334 #endif 335 336 #if !(__has_feature(cxx_decltype)) 337 #define _LIBCPP_HAS_NO_DECLTYPE 338 #endif 339 340 #if __has_feature(cxx_attributes) 341 # define _LIBCPP_NORETURN [[noreturn]] 342 #else 343 # define _LIBCPP_NORETURN __attribute__ ((noreturn)) 344 #endif 345 346 #if !(__has_feature(cxx_lambdas)) 347 #define _LIBCPP_HAS_NO_LAMBDAS 348 #endif 349 350 #if !(__has_feature(cxx_nullptr)) 351 # if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 352 # define nullptr __nullptr 353 # else 354 # define _LIBCPP_HAS_NO_NULLPTR 355 # endif 356 #endif 357 358 #if !(__has_feature(cxx_rvalue_references)) 359 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 360 #endif 361 362 #if !(__has_feature(cxx_auto_type)) 363 #define _LIBCPP_HAS_NO_AUTO_TYPE 364 #endif 365 366 #if !(__has_feature(cxx_variadic_templates)) 367 #define _LIBCPP_HAS_NO_VARIADICS 368 #endif 369 370 #if !(__has_feature(cxx_generalized_initializers)) 371 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 372 #endif 373 374 #if __has_feature(is_base_of) 375 # define _LIBCPP_HAS_IS_BASE_OF 376 #endif 377 378 #if __has_feature(is_final) 379 # define _LIBCPP_HAS_IS_FINAL 380 #endif 381 382 // Objective-C++ features (opt-in) 383 #if __has_feature(objc_arc) 384 #define _LIBCPP_HAS_OBJC_ARC 385 #endif 386 387 #if __has_feature(objc_arc_weak) 388 #define _LIBCPP_HAS_OBJC_ARC_WEAK 389 #endif 390 391 #if !(__has_feature(cxx_constexpr)) 392 #define _LIBCPP_HAS_NO_CONSTEXPR 393 #endif 394 395 #if !(__has_feature(cxx_relaxed_constexpr)) 396 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 397 #endif 398 399 #if !(__has_feature(cxx_variable_templates)) 400 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 401 #endif 402 403 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 404 #if defined(__FreeBSD__) 405 #define _LIBCPP_HAS_QUICK_EXIT 406 #define _LIBCPP_HAS_C11_FEATURES 407 #elif defined(__Fuchsia__) 408 #define _LIBCPP_HAS_QUICK_EXIT 409 #define _LIBCPP_HAS_C11_FEATURES 410 #elif defined(__linux__) 411 #if !defined(_LIBCPP_HAS_MUSL_LIBC) 412 #if __GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 413 #define _LIBCPP_HAS_QUICK_EXIT 414 #endif 415 #if __GLIBC_PREREQ(2, 17) 416 #define _LIBCPP_HAS_C11_FEATURES 417 #endif 418 #else // defined(_LIBCPP_HAS_MUSL_LIBC) 419 #define _LIBCPP_HAS_QUICK_EXIT 420 #define _LIBCPP_HAS_C11_FEATURES 421 #endif 422 #endif // __linux__ 423 #endif 424 425 #if !(__has_feature(cxx_noexcept)) 426 #define _LIBCPP_HAS_NO_NOEXCEPT 427 #endif 428 429 #if __has_feature(underlying_type) 430 # define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 431 #endif 432 433 #if __has_feature(is_literal) 434 # define _LIBCPP_IS_LITERAL(T) __is_literal(T) 435 #endif 436 437 // Inline namespaces are available in Clang regardless of C++ dialect. 438 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE { 439 #define _LIBCPP_END_NAMESPACE_STD } } 440 #define _VSTD std::_LIBCPP_NAMESPACE 441 442 namespace std { 443 inline namespace _LIBCPP_NAMESPACE { 444 } 445 } 446 447 #if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 448 #define _LIBCPP_HAS_NO_ASAN 449 #endif 450 451 // Allow for build-time disabling of unsigned integer sanitization 452 #if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 453 #define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 454 #endif 455 456 #elif defined(_LIBCPP_COMPILER_GCC) 457 458 #define _ALIGNAS(x) __attribute__((__aligned__(x))) 459 #define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 460 461 #define _LIBCPP_NORETURN __attribute__((noreturn)) 462 463 #if _GNUC_VER >= 407 464 #define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 465 #define _LIBCPP_IS_LITERAL(T) __is_literal_type(T) 466 #define _LIBCPP_HAS_IS_FINAL 467 #endif 468 469 #if defined(__GNUC__) && _GNUC_VER >= 403 470 # define _LIBCPP_HAS_IS_BASE_OF 471 #endif 472 473 #if !__EXCEPTIONS 474 #define _LIBCPP_NO_EXCEPTIONS 475 #endif 476 477 // constexpr was added to GCC in 4.6. 478 #if _GNUC_VER < 406 479 #define _LIBCPP_HAS_NO_CONSTEXPR 480 // Can only use constexpr in c++11 mode. 481 #elif !defined(__GXX_EXPERIMENTAL_CXX0X__) && __cplusplus < 201103L 482 #define _LIBCPP_HAS_NO_CONSTEXPR 483 #endif 484 485 // Determine if GCC supports relaxed constexpr 486 #if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 487 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 488 #endif 489 490 // GCC 5 will support variable templates 491 #if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 492 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 493 #endif 494 495 #ifndef __GXX_EXPERIMENTAL_CXX0X__ 496 #define _LIBCPP_HAS_NO_DECLTYPE 497 #define _LIBCPP_HAS_NO_NULLPTR 498 #define _LIBCPP_HAS_NO_UNICODE_CHARS 499 #define _LIBCPP_HAS_NO_VARIADICS 500 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 501 #define _LIBCPP_HAS_NO_STRONG_ENUMS 502 #define _LIBCPP_HAS_NO_NOEXCEPT 503 504 #else // __GXX_EXPERIMENTAL_CXX0X__ 505 506 #if _GNUC_VER < 403 507 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 508 #endif 509 510 511 #if _GNUC_VER < 404 512 #define _LIBCPP_HAS_NO_DECLTYPE 513 #define _LIBCPP_HAS_NO_UNICODE_CHARS 514 #define _LIBCPP_HAS_NO_VARIADICS 515 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 516 #endif // _GNUC_VER < 404 517 518 #if _GNUC_VER < 406 519 #define _LIBCPP_HAS_NO_NOEXCEPT 520 #define _LIBCPP_HAS_NO_NULLPTR 521 #endif 522 523 #endif // __GXX_EXPERIMENTAL_CXX0X__ 524 525 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_NAMESPACE { 526 #define _LIBCPP_END_NAMESPACE_STD } } 527 #define _VSTD std::_LIBCPP_NAMESPACE 528 529 namespace std { 530 inline namespace _LIBCPP_NAMESPACE { 531 } 532 } 533 534 #if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 535 #define _LIBCPP_HAS_NO_ASAN 536 #endif 537 538 #elif defined(_LIBCPP_COMPILER_MSVC) 539 540 #define _LIBCPP_TOSTRING2(x) #x 541 #define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 542 #define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 543 544 #if _MSC_VER < 1900 545 #error "MSVC versions prior to Visual Studio 2015 are not supported" 546 #endif 547 548 #define _LIBCPP_HAS_IS_BASE_OF 549 #define _LIBCPP_HAS_NO_CONSTEXPR 550 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 551 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 552 #if _MSC_VER <= 1800 553 #define _LIBCPP_HAS_NO_UNICODE_CHARS 554 #endif 555 #define _LIBCPP_HAS_NO_NOEXCEPT 556 #define __alignof__ __alignof 557 #define _LIBCPP_NORETURN __declspec(noreturn) 558 #define _ALIGNAS(x) __declspec(align(x)) 559 #define _LIBCPP_HAS_NO_VARIADICS 560 561 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { 562 #define _LIBCPP_END_NAMESPACE_STD } 563 #define _VSTD std 564 565 # define _LIBCPP_WEAK 566 namespace std { 567 } 568 569 #define _LIBCPP_HAS_NO_ASAN 570 571 #elif defined(_LIBCPP_COMPILER_IBM) 572 573 #define _ALIGNAS(x) __attribute__((__aligned__(x))) 574 #define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 575 #define _ATTRIBUTE(x) __attribute__((x)) 576 #define _LIBCPP_NORETURN __attribute__((noreturn)) 577 578 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 579 #define _LIBCPP_HAS_NO_NOEXCEPT 580 #define _LIBCPP_HAS_NO_NULLPTR 581 #define _LIBCPP_HAS_NO_UNICODE_CHARS 582 #define _LIBCPP_HAS_IS_BASE_OF 583 #define _LIBCPP_HAS_IS_FINAL 584 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 585 586 #if defined(_AIX) 587 #define __MULTILOCALE_API 588 #endif 589 590 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE { 591 #define _LIBCPP_END_NAMESPACE_STD } } 592 #define _VSTD std::_LIBCPP_NAMESPACE 593 594 namespace std { 595 inline namespace _LIBCPP_NAMESPACE { 596 } 597 } 598 599 #define _LIBCPP_HAS_NO_ASAN 600 601 #endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 602 603 #if defined(_LIBCPP_OBJECT_FORMAT_COFF) 604 #if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 605 # define _LIBCPP_DLL_VIS 606 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 607 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 608 # define _LIBCPP_OVERRIDABLE_FUNC_VIS 609 #elif defined(_LIBCPP_BUILDING_LIBRARY) 610 # define _LIBCPP_DLL_VIS __declspec(dllexport) 611 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 612 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 613 # define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 614 #else 615 # define _LIBCPP_DLL_VIS __declspec(dllimport) 616 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 617 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 618 # define _LIBCPP_OVERRIDABLE_FUNC_VIS 619 #endif 620 621 #define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 622 #define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 623 #define _LIBCPP_EXTERN_VIS _LIBCPP_DLL_VIS 624 #define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 625 #define _LIBCPP_HIDDEN 626 #define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 627 #define _LIBCPP_TEMPLATE_VIS 628 #define _LIBCPP_FUNC_VIS_ONLY 629 #define _LIBCPP_ENUM_VIS 630 631 #if defined(_LIBCPP_COMPILER_MSVC) 632 # define _LIBCPP_INLINE_VISIBILITY __forceinline 633 # define _LIBCPP_ALWAYS_INLINE __forceinline 634 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __forceinline 635 #else 636 # define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 637 # define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 638 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 639 #endif 640 #endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 641 642 #ifndef _LIBCPP_HIDDEN 643 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 644 #define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 645 #else 646 #define _LIBCPP_HIDDEN 647 #endif 648 #endif 649 650 #ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 651 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 652 // The inline should be removed once PR32114 is resolved 653 #define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 654 #else 655 #define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 656 #endif 657 #endif 658 659 #ifndef _LIBCPP_FUNC_VIS 660 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 661 #define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 662 #else 663 #define _LIBCPP_FUNC_VIS 664 #endif 665 #endif 666 667 #ifndef _LIBCPP_TYPE_VIS 668 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 669 # define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 670 # else 671 # define _LIBCPP_TYPE_VIS 672 # endif 673 #endif 674 675 #ifndef _LIBCPP_TEMPLATE_VIS 676 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 677 # if __has_attribute(__type_visibility__) 678 # define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 679 # else 680 # define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 681 # endif 682 # else 683 # define _LIBCPP_TEMPLATE_VIS 684 # endif 685 #endif 686 687 #ifndef _LIBCPP_FUNC_VIS_ONLY 688 # define _LIBCPP_FUNC_VIS_ONLY _LIBCPP_FUNC_VIS 689 #endif 690 691 #ifndef _LIBCPP_EXTERN_VIS 692 # define _LIBCPP_EXTERN_VIS 693 #endif 694 695 #ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 696 # define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 697 #endif 698 699 #ifndef _LIBCPP_EXCEPTION_ABI 700 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 701 #define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 702 #else 703 #define _LIBCPP_EXCEPTION_ABI 704 #endif 705 #endif 706 707 #ifndef _LIBCPP_ENUM_VIS 708 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 709 # define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 710 # else 711 # define _LIBCPP_ENUM_VIS 712 # endif 713 #endif 714 715 #ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 716 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 717 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 718 # else 719 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 720 # endif 721 #endif 722 723 #ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 724 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 725 #endif 726 727 #ifndef _LIBCPP_INLINE_VISIBILITY 728 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 729 #define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__)) 730 #else 731 #define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 732 #endif 733 #endif 734 735 #ifndef _LIBCPP_ALWAYS_INLINE 736 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 737 #define _LIBCPP_ALWAYS_INLINE __attribute__ ((__visibility__("hidden"), __always_inline__)) 738 #else 739 #define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 740 #endif 741 #endif 742 743 #ifndef _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 744 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 745 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__visibility__("default"), __always_inline__)) 746 # else 747 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__always_inline__)) 748 # endif 749 #endif 750 751 #ifndef _LIBCPP_PREFERRED_OVERLOAD 752 # if __has_attribute(__enable_if__) 753 # define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 754 # endif 755 #endif 756 757 #ifndef _LIBCPP_HAS_NO_NOEXCEPT 758 # define _NOEXCEPT noexcept 759 # define _NOEXCEPT_(x) noexcept(x) 760 #else 761 # define _NOEXCEPT throw() 762 # define _NOEXCEPT_(x) 763 #endif 764 765 #if defined(_LIBCPP_DEBUG_USE_EXCEPTIONS) 766 # if !defined(_LIBCPP_DEBUG) 767 # error cannot use _LIBCPP_DEBUG_USE_EXCEPTIONS unless _LIBCPP_DEBUG is defined 768 # endif 769 # define _NOEXCEPT_DEBUG noexcept(false) 770 # define _NOEXCEPT_DEBUG_(x) noexcept(false) 771 #else 772 # define _NOEXCEPT_DEBUG _NOEXCEPT 773 # define _NOEXCEPT_DEBUG_(x) _NOEXCEPT_(x) 774 #endif 775 776 #ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 777 typedef unsigned short char16_t; 778 typedef unsigned int char32_t; 779 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS 780 781 #ifndef __SIZEOF_INT128__ 782 #define _LIBCPP_HAS_NO_INT128 783 #endif 784 785 #ifdef _LIBCPP_CXX03_LANG 786 # if __has_extension(c_static_assert) 787 # define static_assert(__b, __m) _Static_assert(__b, __m) 788 # else 789 extern "C++" { 790 template <bool> struct __static_assert_test; 791 template <> struct __static_assert_test<true> {}; 792 template <unsigned> struct __static_assert_check {}; 793 } 794 #define static_assert(__b, __m) \ 795 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \ 796 _LIBCPP_CONCAT(__t, __LINE__) 797 # endif // __has_extension(c_static_assert) 798 #endif // _LIBCPP_CXX03_LANG 799 800 #ifdef _LIBCPP_HAS_NO_DECLTYPE 801 // GCC 4.6 provides __decltype in all standard modes. 802 #if __has_keyword(__decltype) || _LIBCPP_CLANG_VER >= 304 || _GNUC_VER >= 406 803 # define decltype(__x) __decltype(__x) 804 #else 805 # define decltype(__x) __typeof__(__x) 806 #endif 807 #endif 808 809 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 810 #define _LIBCPP_CONSTEXPR 811 #else 812 #define _LIBCPP_CONSTEXPR constexpr 813 #endif 814 815 #ifdef _LIBCPP_CXX03_LANG 816 #define _LIBCPP_DEFAULT {} 817 #else 818 #define _LIBCPP_DEFAULT = default; 819 #endif 820 821 #ifdef _LIBCPP_CXX03_LANG 822 #define _LIBCPP_EQUAL_DELETE 823 #else 824 #define _LIBCPP_EQUAL_DELETE = delete 825 #endif 826 827 #ifdef __GNUC__ 828 #define _NOALIAS __attribute__((__malloc__)) 829 #else 830 #define _NOALIAS 831 #endif 832 833 #if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 834 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 835 # define _LIBCPP_EXPLICIT explicit 836 #else 837 # define _LIBCPP_EXPLICIT 838 #endif 839 840 #if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 841 # define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 842 #endif 843 844 #ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 845 #define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 846 #define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 847 __lx __v_; \ 848 _LIBCPP_ALWAYS_INLINE x(__lx __v) : __v_(__v) {} \ 849 _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 850 _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \ 851 }; 852 #else // _LIBCPP_HAS_NO_STRONG_ENUMS 853 #define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 854 #define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 855 #endif // _LIBCPP_HAS_NO_STRONG_ENUMS 856 857 #ifdef _LIBCPP_DEBUG 858 # if _LIBCPP_DEBUG == 0 859 # define _LIBCPP_DEBUG_LEVEL 1 860 # elif _LIBCPP_DEBUG == 1 861 # define _LIBCPP_DEBUG_LEVEL 2 862 # else 863 # error Supported values for _LIBCPP_DEBUG are 0 and 1 864 # endif 865 # if !defined(_LIBCPP_BUILDING_LIBRARY) 866 # define _LIBCPP_EXTERN_TEMPLATE(...) 867 # endif 868 #endif 869 870 #ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 871 #define _LIBCPP_EXTERN_TEMPLATE(...) 872 #define _LIBCPP_EXTERN_TEMPLATE2(...) 873 #endif 874 875 #ifndef _LIBCPP_EXTERN_TEMPLATE 876 #define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__; 877 #endif 878 879 #ifndef _LIBCPP_EXTERN_TEMPLATE2 880 #define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 881 #endif 882 883 #if defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__) 884 #define _LIBCPP_NONUNIQUE_RTTI_BIT (1ULL << 63) 885 #endif 886 887 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT) || \ 888 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 889 #define _LIBCPP_LOCALE__L_EXTENSIONS 1 890 #endif 891 892 #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 893 // Most unix variants have catopen. These are the specific ones that don't. 894 #if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 895 #define _LIBCPP_HAS_CATOPEN 1 896 #endif 897 #endif 898 899 #ifdef __FreeBSD__ 900 #define _DECLARE_C99_LDBL_MATH 1 901 #endif 902 903 #if defined(__APPLE__) 904 # if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 905 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 906 # define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 907 # endif 908 # if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) 909 # if __MAC_OS_X_VERSION_MIN_REQUIRED < 1060 910 # define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 911 # endif 912 # endif 913 #endif // defined(__APPLE__) 914 915 #if defined(__APPLE__) || defined(__FreeBSD__) 916 #define _LIBCPP_HAS_DEFAULTRUNELOCALE 917 #endif 918 919 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 920 #define _LIBCPP_WCTYPE_IS_MASK 921 #endif 922 923 #ifndef _LIBCPP_STD_VER 924 # if __cplusplus <= 201103L 925 # define _LIBCPP_STD_VER 11 926 # elif __cplusplus <= 201402L 927 # define _LIBCPP_STD_VER 14 928 # else 929 # define _LIBCPP_STD_VER 16 // current year, or date of c++17 ratification 930 # endif 931 #endif // _LIBCPP_STD_VER 932 933 #if _LIBCPP_STD_VER > 11 934 #define _LIBCPP_DEPRECATED [[deprecated]] 935 #else 936 #define _LIBCPP_DEPRECATED 937 #endif 938 939 #if _LIBCPP_STD_VER <= 11 940 #define _LIBCPP_EXPLICIT_AFTER_CXX11 941 #define _LIBCPP_DEPRECATED_AFTER_CXX11 942 #else 943 #define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 944 #define _LIBCPP_DEPRECATED_AFTER_CXX11 [[deprecated]] 945 #endif 946 947 #if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 948 #define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 949 #else 950 #define _LIBCPP_CONSTEXPR_AFTER_CXX11 951 #endif 952 953 #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 954 #define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 955 #else 956 #define _LIBCPP_CONSTEXPR_AFTER_CXX14 957 #endif 958 959 // FIXME: Remove all usages of this macro once compilers catch up. 960 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606L) 961 # define _LIBCPP_HAS_NO_INLINE_VARIABLES 962 #endif 963 964 #ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 965 # define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 966 #else 967 # define _LIBCPP_EXPLICIT_MOVE(x) (x) 968 #endif 969 970 #ifndef _LIBCPP_HAS_NO_ASAN 971 _LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 972 const void *, const void *, const void *, const void *); 973 #endif 974 975 // Try to find out if RTTI is disabled. 976 // g++ and cl.exe have RTTI on by default and define a macro when it is. 977 // g++ only defines the macro in 4.3.2 and onwards. 978 #if !defined(_LIBCPP_NO_RTTI) 979 # if defined(__GNUC__) && ((__GNUC__ >= 5) || (__GNUC__ == 4 && \ 980 (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && !defined(__GXX_RTTI) 981 # define _LIBCPP_NO_RTTI 982 # elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 983 # define _LIBCPP_NO_RTTI 984 # endif 985 #endif 986 987 #ifndef _LIBCPP_WEAK 988 # define _LIBCPP_WEAK __attribute__((__weak__)) 989 #endif 990 991 // Thread API 992 #if !defined(_LIBCPP_HAS_NO_THREADS) && \ 993 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 994 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 995 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 996 # if defined(__FreeBSD__) || \ 997 defined(__Fuchsia__) || \ 998 defined(__NetBSD__) || \ 999 defined(__linux__) || \ 1000 defined(__APPLE__) || \ 1001 defined(__CloudABI__) || \ 1002 defined(__sun__) || \ 1003 (defined(__MINGW32__) && __libcpp_has_include(<pthread.h>)) 1004 # define _LIBCPP_HAS_THREAD_API_PTHREAD 1005 # elif defined(_LIBCPP_WIN32API) 1006 # define _LIBCPP_HAS_THREAD_API_WIN32 1007 # else 1008 # error "No thread API" 1009 # endif // _LIBCPP_HAS_THREAD_API 1010 #endif // _LIBCPP_HAS_NO_THREADS 1011 1012 #if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1013 # error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1014 _LIBCPP_HAS_NO_THREADS is not defined. 1015 #endif 1016 1017 #if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1018 # error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1019 _LIBCPP_HAS_NO_THREADS is defined. 1020 #endif 1021 1022 #if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1023 # error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1024 _LIBCPP_HAS_NO_THREADS is defined. 1025 #endif 1026 1027 // Systems that use capability-based security (FreeBSD with Capsicum, 1028 // Nuxi CloudABI) may only provide local filesystem access (using *at()). 1029 // Functions like open(), rename(), unlink() and stat() should not be 1030 // used, as they attempt to access the global filesystem namespace. 1031 #ifdef __CloudABI__ 1032 #define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1033 #endif 1034 1035 // CloudABI is intended for running networked services. Processes do not 1036 // have standard input and output channels. 1037 #ifdef __CloudABI__ 1038 #define _LIBCPP_HAS_NO_STDIN 1039 #define _LIBCPP_HAS_NO_STDOUT 1040 #endif 1041 1042 #if defined(__BIONIC__) || defined(__CloudABI__) || \ 1043 defined(__Fuchsia__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1044 #define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1045 #endif 1046 1047 // Thread-unsafe functions such as strtok() and localtime() 1048 // are not available. 1049 #ifdef __CloudABI__ 1050 #define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1051 #endif 1052 1053 #if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1054 #define _LIBCPP_HAS_C_ATOMIC_IMP 1055 #elif _GNUC_VER > 407 1056 #define _LIBCPP_HAS_GCC_ATOMIC_IMP 1057 #endif 1058 1059 #if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \ 1060 || defined(_LIBCPP_HAS_NO_THREADS) 1061 #define _LIBCPP_HAS_NO_ATOMIC_HEADER 1062 #endif 1063 1064 #ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1065 #define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1066 #endif 1067 1068 #if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1069 #if defined(__clang__) && __has_attribute(acquire_capability) 1070 // Work around the attribute handling in clang. When both __declspec and 1071 // __attribute__ are present, the processing goes awry preventing the definition 1072 // of the types. 1073 #if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1074 #define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1075 #endif 1076 #endif 1077 #endif 1078 1079 #if __has_attribute(require_constant_initialization) 1080 #define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1081 #else 1082 #define _LIBCPP_SAFE_STATIC 1083 #endif 1084 1085 #if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1086 # define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1087 #endif 1088 1089 #if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1090 #if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1091 #define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1092 #endif 1093 #endif 1094 1095 #if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1096 # define _LIBCPP_DIAGNOSE_WARNING(...) \ 1097 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1098 # define _LIBCPP_DIAGNOSE_ERROR(...) \ 1099 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1100 #else 1101 # define _LIBCPP_DIAGNOSE_WARNING(...) 1102 # define _LIBCPP_DIAGNOSE_ERROR(...) 1103 #endif 1104 1105 #if __has_attribute(fallthough) || _GNUC_VER >= 700 1106 // Use a function like macro to imply that it must be followed by a semicolon 1107 #define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1108 #else 1109 #define _LIBCPP_FALLTHROUGH() ((void)0) 1110 #endif 1111 1112 #if defined(_LIBCPP_ABI_MICROSOFT) && \ 1113 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1114 # define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1115 #else 1116 # define _LIBCPP_DECLSPEC_EMPTY_BASES 1117 #endif 1118 1119 #if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1120 # define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1121 # define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1122 # define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1123 # define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1124 #endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1125 1126 #if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1127 # define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1128 #endif 1129 1130 #if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1131 # define _LIBCPP_HAS_NO_IS_AGGREGATE 1132 #endif 1133 1134 #if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1135 # define _LIBCPP_HAS_NO_COROUTINES 1136 #endif 1137 1138 // Decide whether to use availability macros. 1139 #if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1140 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1141 __has_feature(attribute_availability_with_strict) && \ 1142 __has_feature(attribute_availability_in_templates) 1143 #ifdef __APPLE__ 1144 #define _LIBCPP_USE_AVAILABILITY_APPLE 1145 #endif 1146 #endif 1147 1148 // Define availability macros. 1149 #if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1150 #define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1151 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1152 __attribute__((availability(ios,strict,introduced=10.0))) \ 1153 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1154 __attribute__((availability(watchos,strict,introduced=3.0))) 1155 #define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS __attribute__((unavailable)) 1156 #define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH __attribute__((unavailable)) 1157 #define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1158 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1159 __attribute__((availability(ios,strict,introduced=10.0))) \ 1160 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1161 __attribute__((availability(watchos,strict,introduced=3.0))) 1162 #define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1163 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1164 __attribute__((availability(ios,strict,introduced=10.0))) \ 1165 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1166 __attribute__((availability(watchos,strict,introduced=3.0))) 1167 #define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1168 __attribute__((availability(ios,strict,introduced=6.0))) 1169 #define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1170 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1171 __attribute__((availability(ios,strict,introduced=7.0))) 1172 #define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1173 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1174 __attribute__((availability(ios,strict,introduced=7.0))) 1175 #define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1176 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1177 __attribute__((availability(ios,strict,introduced=7.0))) 1178 #else 1179 #define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1180 #define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1181 #define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1182 #define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1183 #define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1184 #define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1185 #define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1186 #define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1187 #define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1188 #endif 1189 1190 // Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1191 #ifdef _LIBCPP_NO_EXCEPTIONS 1192 #define _LIBCPP_AVAILABILITY_DYNARRAY 1193 #define _LIBCPP_AVAILABILITY_FUTURE 1194 #else 1195 #define _LIBCPP_AVAILABILITY_DYNARRAY _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1196 #define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 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
