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darling-libcxx/include/__config
Dan Albert a4ccec7e8e Revert "Revert "Implement std::condition_variable via pthread_cond_clockwait() where available"" 
With the fix for non-Linux.

This reverts commit c1c519d2f1a66dd2eeaa4c321d8d7b50f623eb71.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@372242 91177308-0d34-0410-b5e6-96231b3b80d8
2019-09-18 18:13:32 +00:00

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// -*- C++ -*-
//===--------------------------- __config ---------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_CONFIG
#define _LIBCPP_CONFIG
#if defined(_MSC_VER) && !defined(__clang__)
# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
# endif
#endif
#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
#pragma GCC system_header
#endif
#ifdef __cplusplus
#ifdef __GNUC__
# define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__)
// The _GNUC_VER_NEW macro better represents the new GCC versioning scheme
// introduced in GCC 5.0.
# define _GNUC_VER_NEW (_GNUC_VER * 10 + __GNUC_PATCHLEVEL__)
#else
# define _GNUC_VER 0
# define _GNUC_VER_NEW 0
#endif
#define _LIBCPP_VERSION 10000
#ifndef _LIBCPP_ABI_VERSION
# define _LIBCPP_ABI_VERSION 1
#endif
#ifndef __STDC_HOSTED__
# define _LIBCPP_FREESTANDING
#endif
#ifndef _LIBCPP_STD_VER
# if __cplusplus <= 201103L
# define _LIBCPP_STD_VER 11
# elif __cplusplus <= 201402L
# define _LIBCPP_STD_VER 14
# elif __cplusplus <= 201703L
# define _LIBCPP_STD_VER 17
# else
# define _LIBCPP_STD_VER 18 // current year, or date of c++2a ratification
# endif
#endif // _LIBCPP_STD_VER
#if defined(__ELF__)
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#elif defined(_WIN32)
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#elif defined(__wasm__)
# define _LIBCPP_OBJECT_FORMAT_WASM 1
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# error Unknown object file format
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// Change short string representation so that string data starts at offset 0,
// improving its alignment in some cases.
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// Fix deque iterator type in order to support incomplete types.
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// Fix undefined behavior in how std::list stores its linked nodes.
# define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB
// Fix undefined behavior in how __tree stores its end and parent nodes.
# define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB
// Fix undefined behavior in how __hash_table stores its pointer types.
# define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB
# define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB
# define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE
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# define _LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE
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// Enable optimized version of __do_get_(un)signed which avoids redundant copies.
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// Use the smallest possible integer type to represent the index of the variant.
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// Unstable attempt to provide a more optimized std::function
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# if !defined(_LIBCPP_OBJECT_FORMAT_COFF)
// Enable compiling copies of now inline methods into the dylib to support
// applications compiled against older libraries. This is unnecessary with
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# define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS
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# if defined(__FreeBSD__)
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#endif
#ifdef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR
#error "_LIBCPP_TRIVIAL_PAIR_COPY_CTOR" is no longer supported. \
use _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR instead
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# if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \
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// Certain architectures provide arc4random(). Prefer using
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// NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access,
// including accesses to the special files under /dev. C++11's
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# define _LIBCPP_USING_NACL_RANDOM
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# error unable to determine endian
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#if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC)
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# if !defined(_LIBCPP_HAS_MUSL_LIBC)
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# define _LIBCPP_HAS_TIMESPEC_GET
# define _LIBCPP_HAS_C11_FEATURES
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#ifndef _LIBCPP_CXX03_LANG
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#elif defined(_LIBCPP_COMPILER_CLANG)
# define _LIBCPP_ALIGNOF(_Tp) _Alignof(_Tp)
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// This definition is potentially buggy, but it's only taken with GCC in C++03,
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// _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for
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(!defined(__arm__) || __ARM_ARCH_7K__ >= 2)) || \
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#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
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# define _ALIGNAS(x) __attribute__((__aligned__(x)))
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#if __cplusplus < 201103L
typedef __char16_t char16_t;
typedef __char32_t char32_t;
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#if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS)
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#if !(__has_feature(cxx_rtti)) && !defined(_LIBCPP_NO_RTTI)
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#if __has_feature(cxx_attributes)
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#if !(__has_feature(cxx_nullptr))
# if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR)
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# endif
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#if !(__has_feature(cxx_rvalue_references))
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#if !(__has_feature(cxx_variadic_templates))
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// Objective-C++ features (opt-in)
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#if __has_feature(objc_arc_weak)
#define _LIBCPP_HAS_OBJC_ARC_WEAK
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#if !(__has_feature(cxx_relaxed_constexpr))
#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR
#endif
#if !(__has_feature(cxx_variable_templates))
#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
#endif
#if !(__has_feature(cxx_noexcept))
#define _LIBCPP_HAS_NO_NOEXCEPT
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#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer)
#define _LIBCPP_HAS_NO_ASAN
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// Allow for build-time disabling of unsigned integer sanitization
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#if __has_builtin(__builtin_launder)
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#if !__is_identifier(__has_unique_object_representations)
#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS
#endif
#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__))
// Literal operators ""d and ""y are supported starting with LLVM Clang 8 and AppleClang 10.0.1
#if (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 800) || \
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#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS
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#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__
#elif defined(_LIBCPP_COMPILER_GCC)
#define _ALIGNAS(x) __attribute__((__aligned__(x)))
#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x))))
#define _LIBCPP_NORETURN __attribute__((noreturn))
#if !__EXCEPTIONS && !defined(_LIBCPP_NO_EXCEPTIONS)
#define _LIBCPP_NO_EXCEPTIONS
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// Determine if GCC supports relaxed constexpr
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// GCC 5 supports variable templates
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#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
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#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__)
#define _LIBCPP_HAS_NO_ASAN
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#if _GNUC_VER >= 700
#define _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER
#endif
#if _GNUC_VER >= 700
#define _LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS
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#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__))
#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__
#elif defined(_LIBCPP_COMPILER_MSVC)
#define _LIBCPP_TOSTRING2(x) #x
#define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x)
#define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x))
#if _MSC_VER < 1900
#error "MSVC versions prior to Visual Studio 2015 are not supported"
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#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR
#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
#define __alignof__ __alignof
#define _LIBCPP_NORETURN __declspec(noreturn)
#define _ALIGNAS(x) __declspec(align(x))
#define _ALIGNAS_TYPE(x) alignas(x)
#define _LIBCPP_WEAK
#define _LIBCPP_HAS_NO_ASAN
#define _LIBCPP_ALWAYS_INLINE __forceinline
#define _LIBCPP_HAS_NO_VECTOR_EXTENSION
#define _LIBCPP_DISABLE_EXTENSION_WARNING
#elif defined(_LIBCPP_COMPILER_IBM)
#define _ALIGNAS(x) __attribute__((__aligned__(x)))
#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(_LIBCPP_ALIGNOF(x))))
#define _ATTRIBUTE(x) __attribute__((x))
#define _LIBCPP_NORETURN __attribute__((noreturn))
#define _LIBCPP_HAS_NO_UNICODE_CHARS
#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
#if defined(_AIX)
#define __MULTILOCALE_API
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#define _LIBCPP_HAS_NO_ASAN
#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__))
#define _LIBCPP_HAS_NO_VECTOR_EXTENSION
#define _LIBCPP_DISABLE_EXTENSION_WARNING
#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM]
#if defined(_LIBCPP_OBJECT_FORMAT_COFF)
#ifdef _DLL
# define _LIBCPP_CRT_FUNC __declspec(dllimport)
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# define _LIBCPP_DLL_VIS
# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS
# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS
# define _LIBCPP_OVERRIDABLE_FUNC_VIS
# define _LIBCPP_EXPORTED_FROM_ABI
#elif defined(_LIBCPP_BUILDING_LIBRARY)
# define _LIBCPP_DLL_VIS __declspec(dllexport)
# if defined(__MINGW32__)
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# define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS
# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllexport)
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# define _LIBCPP_DLL_VIS __declspec(dllimport)
# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS
# define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS
# define _LIBCPP_OVERRIDABLE_FUNC_VIS
# define _LIBCPP_EXPORTED_FROM_ABI __declspec(dllimport)
#endif
#define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS
#define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS
#define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS
#define _LIBCPP_HIDDEN
#define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
#define _LIBCPP_TEMPLATE_VIS
#define _LIBCPP_ENUM_VIS
#endif // defined(_LIBCPP_OBJECT_FORMAT_COFF)
#ifndef _LIBCPP_HIDDEN
# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
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# endif
#endif
#ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
// The inline should be removed once PR32114 is resolved
# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN
# else
# define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
# endif
#endif
#ifndef _LIBCPP_FUNC_VIS
# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
# define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default")))
# else
# define _LIBCPP_FUNC_VIS
# endif
#endif
#ifndef _LIBCPP_TYPE_VIS
# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default")))
# else
# define _LIBCPP_TYPE_VIS
# endif
#endif
#ifndef _LIBCPP_TEMPLATE_VIS
# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
# if __has_attribute(__type_visibility__)
# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default")))
# else
# define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default")))
# endif
# else
# define _LIBCPP_TEMPLATE_VIS
# endif
#endif
#ifndef _LIBCPP_EXPORTED_FROM_ABI
# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default")))
# else
# define _LIBCPP_EXPORTED_FROM_ABI
# endif
#endif
#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS
#define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS
#endif
#ifndef _LIBCPP_EXCEPTION_ABI
# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
# define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default")))
# else
# define _LIBCPP_EXCEPTION_ABI
# endif
#endif
#ifndef _LIBCPP_ENUM_VIS
# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__)
# define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default")))
# else
# define _LIBCPP_ENUM_VIS
# endif
#endif
#ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS
# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__)
# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default")))
# else
# define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS
# endif
#endif
#ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS
#define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS
#endif
#if __has_attribute(internal_linkage)
# define _LIBCPP_INTERNAL_LINKAGE __attribute__ ((internal_linkage))
#else
# define _LIBCPP_INTERNAL_LINKAGE _LIBCPP_ALWAYS_INLINE
#endif
#if __has_attribute(exclude_from_explicit_instantiation)
# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__ ((__exclude_from_explicit_instantiation__))
#else
// Try to approximate the effect of exclude_from_explicit_instantiation
// (which is that entities are not assumed to be provided by explicit
// template instantiations in the dylib) by always inlining those entities.
# define _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION _LIBCPP_ALWAYS_INLINE
#endif
#ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU
# ifndef _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT
# define _LIBCPP_HIDE_FROM_ABI_PER_TU 0
# else
# define _LIBCPP_HIDE_FROM_ABI_PER_TU 1
# endif
#endif
#ifndef _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT
# ifdef _LIBCPP_OBJECT_FORMAT_COFF // Windows binaries can't merge typeinfos.
# define _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT 0
#else
// TODO: This isn't strictly correct on ELF platforms due to llvm.org/PR37398
// And we should consider defaulting to OFF.
# define _LIBCPP_HAS_MERGED_TYPEINFO_NAMES_DEFAULT 1
#endif
#endif
#ifndef _LIBCPP_HIDE_FROM_ABI
# if _LIBCPP_HIDE_FROM_ABI_PER_TU
# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_INTERNAL_LINKAGE
# else
# define _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDDEN _LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION
# endif
#endif
#ifdef _LIBCPP_BUILDING_LIBRARY
# if _LIBCPP_ABI_VERSION > 1
# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI
# else
# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1
# endif
#else
# define _LIBCPP_HIDE_FROM_ABI_AFTER_V1 _LIBCPP_HIDE_FROM_ABI
#endif
// Just so we can migrate to the new macros gradually.
#define _LIBCPP_INLINE_VISIBILITY _LIBCPP_HIDE_FROM_ABI
// Inline namespaces are available in Clang/GCC/MSVC regardless of C++ dialect.
#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI_NAMESPACE {
#define _LIBCPP_END_NAMESPACE_STD } }
#define _VSTD std::_LIBCPP_ABI_NAMESPACE
_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \
_LIBCPP_BEGIN_NAMESPACE_STD inline namespace __fs { namespace filesystem {
#else
#define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM \
_LIBCPP_BEGIN_NAMESPACE_STD namespace __fs { namespace filesystem {
#endif
#define _LIBCPP_END_NAMESPACE_FILESYSTEM \
_LIBCPP_END_NAMESPACE_STD } }
#define _VSTD_FS _VSTD::__fs::filesystem
#ifndef _LIBCPP_PREFERRED_OVERLOAD
# if __has_attribute(__enable_if__)
# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, "")))
# endif
#endif
#ifndef _LIBCPP_HAS_NO_NOEXCEPT
# define _NOEXCEPT noexcept
# define _NOEXCEPT_(x) noexcept(x)
#else
# define _NOEXCEPT throw()
# define _NOEXCEPT_(x)
#endif
#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS
typedef unsigned short char16_t;
typedef unsigned int char32_t;
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
#ifndef __SIZEOF_INT128__
#define _LIBCPP_HAS_NO_INT128
#endif
#ifdef _LIBCPP_CXX03_LANG
# define static_assert(...) _Static_assert(__VA_ARGS__)
# define decltype(...) __decltype(__VA_ARGS__)
#endif // _LIBCPP_CXX03_LANG
#ifdef _LIBCPP_CXX03_LANG
# define _LIBCPP_CONSTEXPR
#else
# define _LIBCPP_CONSTEXPR constexpr
#endif
#ifdef _LIBCPP_CXX03_LANG
# define _LIBCPP_DEFAULT {}
#else
# define _LIBCPP_DEFAULT = default;
#endif
#ifdef _LIBCPP_CXX03_LANG
# define _LIBCPP_EQUAL_DELETE
#else
# define _LIBCPP_EQUAL_DELETE = delete
#endif
#ifdef __GNUC__
# define _LIBCPP_NOALIAS __attribute__((__malloc__))
#else
# define _LIBCPP_NOALIAS
#endif
#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \
(!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions
# define _LIBCPP_EXPLICIT explicit
#else
# define _LIBCPP_EXPLICIT
#endif
#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete)
#define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
#endif
#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
# define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx
# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \
__lx __v_; \
_LIBCPP_INLINE_VISIBILITY x(__lx __v) : __v_(__v) {} \
_LIBCPP_INLINE_VISIBILITY explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \
_LIBCPP_INLINE_VISIBILITY operator int() const {return __v_;} \
};
#else // _LIBCPP_HAS_NO_STRONG_ENUMS
# define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x
# define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x)
#endif // _LIBCPP_HAS_NO_STRONG_ENUMS
#ifdef _LIBCPP_DEBUG
# if _LIBCPP_DEBUG == 0
# define _LIBCPP_DEBUG_LEVEL 1
# elif _LIBCPP_DEBUG == 1
# define _LIBCPP_DEBUG_LEVEL 2
# else
# error Supported values for _LIBCPP_DEBUG are 0 and 1
# endif
# if !defined(_LIBCPP_BUILDING_LIBRARY)
# define _LIBCPP_EXTERN_TEMPLATE(...)
# endif
#endif
#ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE
#define _LIBCPP_EXTERN_TEMPLATE(...)
#define _LIBCPP_EXTERN_TEMPLATE2(...)
#endif
#ifndef _LIBCPP_EXTERN_TEMPLATE
#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__;
#endif
#ifndef _LIBCPP_EXTERN_TEMPLATE2
#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__;
#endif
#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT_LIKE) || \
defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__)
#define _LIBCPP_LOCALE__L_EXTENSIONS 1
#endif
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
// Most unix variants have catopen. These are the specific ones that don't.
# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION)
# define _LIBCPP_HAS_CATOPEN 1
# endif
#endif
#ifdef __FreeBSD__
#define _DECLARE_C99_LDBL_MATH 1
#endif
// If we are getting operator new from the MSVC CRT, then allocation overloads
// for align_val_t were added in 19.12, aka VS 2017 version 15.3.
#if defined(_LIBCPP_MSVCRT) && defined(_MSC_VER) && _MSC_VER < 1912
# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION
#elif defined(_LIBCPP_ABI_VCRUNTIME) && !defined(__cpp_aligned_new)
// We're deferring to Microsoft's STL to provide aligned new et al. We don't
// have it unless the language feature test macro is defined.
# define _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION
#endif
#if defined(__APPLE__)
# if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \
defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__)
# define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
# endif
#endif // defined(__APPLE__)
#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \
(defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) || \
(!defined(__cpp_aligned_new) || __cpp_aligned_new < 201606))
# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION
#endif
#if defined(__APPLE__) || defined(__FreeBSD__)
#define _LIBCPP_HAS_DEFAULTRUNELOCALE
#endif
#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__)
#define _LIBCPP_WCTYPE_IS_MASK
#endif
#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_char8_t)
#define _LIBCPP_NO_HAS_CHAR8_T
#endif
// Deprecation macros.
//
// Deprecations warnings are always enabled, except when users explicitly opt-out
// by defining _LIBCPP_DISABLE_DEPRECATION_WARNINGS.
#if !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS)
# if __has_attribute(deprecated)
# define _LIBCPP_DEPRECATED __attribute__ ((deprecated))
# elif _LIBCPP_STD_VER > 11
# define _LIBCPP_DEPRECATED [[deprecated]]
# else
# define _LIBCPP_DEPRECATED
# endif
#else
# define _LIBCPP_DEPRECATED
#endif
#if !defined(_LIBCPP_CXX03_LANG)
# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED
#else
# define _LIBCPP_DEPRECATED_IN_CXX11
#endif
#if _LIBCPP_STD_VER >= 14
# define _LIBCPP_DEPRECATED_IN_CXX14 _LIBCPP_DEPRECATED
#else
# define _LIBCPP_DEPRECATED_IN_CXX14
#endif
#if _LIBCPP_STD_VER >= 17
# define _LIBCPP_DEPRECATED_IN_CXX17 _LIBCPP_DEPRECATED
#else
# define _LIBCPP_DEPRECATED_IN_CXX17
#endif
#if _LIBCPP_STD_VER <= 11
# define _LIBCPP_EXPLICIT_AFTER_CXX11
#else
# define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit
#endif
#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR)
# define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr
#else
# define _LIBCPP_CONSTEXPR_AFTER_CXX11
#endif
#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR)
# define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr
#else
# define _LIBCPP_CONSTEXPR_AFTER_CXX14
#endif
#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR)
# define _LIBCPP_CONSTEXPR_AFTER_CXX17 constexpr
#else
# define _LIBCPP_CONSTEXPR_AFTER_CXX17
#endif
// The _LIBCPP_NODISCARD_ATTRIBUTE should only be used to define other
// NODISCARD macros to the correct attribute.
#if __has_cpp_attribute(nodiscard) || defined(_LIBCPP_COMPILER_MSVC)
# define _LIBCPP_NODISCARD_ATTRIBUTE [[nodiscard]]
#elif defined(_LIBCPP_COMPILER_CLANG) && !defined(_LIBCPP_CXX03_LANG)
# define _LIBCPP_NODISCARD_ATTRIBUTE [[clang::warn_unused_result]]
#else
// We can't use GCC's [[gnu::warn_unused_result]] and
// __attribute__((warn_unused_result)), because GCC does not silence them via
// (void) cast.
# define _LIBCPP_NODISCARD_ATTRIBUTE
#endif
// _LIBCPP_NODISCARD_EXT may be used to apply [[nodiscard]] to entities not
// specified as such as an extension.
#if defined(_LIBCPP_ENABLE_NODISCARD) && !defined(_LIBCPP_DISABLE_NODISCARD_EXT)
# define _LIBCPP_NODISCARD_EXT _LIBCPP_NODISCARD_ATTRIBUTE
#else
# define _LIBCPP_NODISCARD_EXT
#endif
#if !defined(_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17) && \
(_LIBCPP_STD_VER > 17 || defined(_LIBCPP_ENABLE_NODISCARD))
# define _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_NODISCARD_ATTRIBUTE
#else
# define _LIBCPP_NODISCARD_AFTER_CXX17
#endif
#if _LIBCPP_STD_VER > 14 && defined(__cpp_inline_variables) && (__cpp_inline_variables >= 201606L)
# define _LIBCPP_INLINE_VAR inline
#else
# define _LIBCPP_INLINE_VAR
#endif
#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES
# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x)
#else
# define _LIBCPP_EXPLICIT_MOVE(x) (x)
#endif
#ifndef _LIBCPP_CONSTEXPR_IF_NODEBUG
#if defined(_LIBCPP_DEBUG) || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR)
#define _LIBCPP_CONSTEXPR_IF_NODEBUG
#else
#define _LIBCPP_CONSTEXPR_IF_NODEBUG constexpr
#endif
#endif
#if __has_attribute(no_destroy)
# define _LIBCPP_NO_DESTROY __attribute__((__no_destroy__))
#else
# define _LIBCPP_NO_DESTROY
#endif
#ifndef _LIBCPP_HAS_NO_ASAN
_LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container(
const void *, const void *, const void *, const void *);
#endif
// Try to find out if RTTI is disabled.
// g++ and cl.exe have RTTI on by default and define a macro when it is.
// g++ only defines the macro in 4.3.2 and onwards.
#if !defined(_LIBCPP_NO_RTTI)
# if defined(__GNUC__) && \
((__GNUC__ >= 5) || \
(__GNUC__ == 4 && (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && \
!defined(__GXX_RTTI)
# define _LIBCPP_NO_RTTI
# elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI)
# define _LIBCPP_NO_RTTI
# endif
#endif
#ifndef _LIBCPP_WEAK
#define _LIBCPP_WEAK __attribute__((__weak__))
#endif
// Thread API
#if !defined(_LIBCPP_HAS_NO_THREADS) && \
!defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \
!defined(_LIBCPP_HAS_THREAD_API_WIN32) && \
!defined(_LIBCPP_HAS_THREAD_API_EXTERNAL)
# if defined(__FreeBSD__) || \
defined(__Fuchsia__) || \
defined(__wasi__) || \
defined(__NetBSD__) || \
defined(__linux__) || \
defined(__GNU__) || \
defined(__APPLE__) || \
defined(__CloudABI__) || \
defined(__sun__) || \
(defined(__MINGW32__) && __has_include(<pthread.h>))
# define _LIBCPP_HAS_THREAD_API_PTHREAD
# elif defined(_LIBCPP_WIN32API)
# define _LIBCPP_HAS_THREAD_API_WIN32
# else
# error "No thread API"
# endif // _LIBCPP_HAS_THREAD_API
#endif // _LIBCPP_HAS_NO_THREADS
#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
#if defined(__ANDROID__) && __ANDROID_API__ >= 30
#define _LIBCPP_HAS_COND_CLOCKWAIT
#elif defined(_LIBCPP_GLIBC_PREREQ)
#if _LIBCPP_GLIBC_PREREQ(2, 30)
#define _LIBCPP_HAS_COND_CLOCKWAIT
#endif
#endif
#endif
#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
#error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \
_LIBCPP_HAS_NO_THREADS is not defined.
#endif
#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL)
#error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \
_LIBCPP_HAS_NO_THREADS is defined.
#endif
#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS)
#error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \
_LIBCPP_HAS_NO_THREADS is defined.
#endif
#if defined(__STDCPP_THREADS__) && defined(_LIBCPP_HAS_NO_THREADS)
#error _LIBCPP_HAS_NO_THREADS cannot be set when __STDCPP_THREADS__ is set.
#endif
#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(__STDCPP_THREADS__)
#define __STDCPP_THREADS__ 1
#endif
// The glibc and Bionic implementation of pthreads implements
// pthread_mutex_destroy as nop for regular mutexes. Additionally, Win32
// mutexes have no destroy mechanism.
//
// This optimization can't be performed on Apple platforms, where
// pthread_mutex_destroy can allow the kernel to release resources.
// See https://llvm.org/D64298 for details.
//
// TODO(EricWF): Enable this optimization on Bionic after speaking to their
// respective stakeholders.
#if (defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && defined(__GLIBC__)) \
|| defined(_LIBCPP_HAS_THREAD_API_WIN32)
# define _LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION
#endif
// Destroying a condvar is a nop on Windows.
//
// This optimization can't be performed on Apple platforms, where
// pthread_cond_destroy can allow the kernel to release resources.
// See https://llvm.org/D64298 for details.
//
// TODO(EricWF): This is potentially true for some pthread implementations
// as well.
#if defined(_LIBCPP_HAS_THREAD_API_WIN32)
# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION
#endif
// Systems that use capability-based security (FreeBSD with Capsicum,
// Nuxi CloudABI) may only provide local filesystem access (using *at()).
// Functions like open(), rename(), unlink() and stat() should not be
// used, as they attempt to access the global filesystem namespace.
#ifdef __CloudABI__
#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
#endif
// CloudABI is intended for running networked services. Processes do not
// have standard input and output channels.
#ifdef __CloudABI__
#define _LIBCPP_HAS_NO_STDIN
#define _LIBCPP_HAS_NO_STDOUT
#endif
// Some systems do not provide gets() in their C library, for security reasons.
#ifndef _LIBCPP_C_HAS_NO_GETS
# if defined(_LIBCPP_MSVCRT) || (defined(__FreeBSD__) && __FreeBSD__ >= 13)
# define _LIBCPP_C_HAS_NO_GETS
# endif
#endif
#if defined(__BIONIC__) || defined(__CloudABI__) || \
defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC)
#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE
#endif
// Thread-unsafe functions such as strtok() and localtime()
// are not available.
#ifdef __CloudABI__
#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
#endif
#if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic)
# define _LIBCPP_HAS_C_ATOMIC_IMP
#elif defined(_LIBCPP_COMPILER_GCC)
# define _LIBCPP_HAS_GCC_ATOMIC_IMP
#endif
#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && \
!defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) && \
!defined(_LIBCPP_HAS_EXTERNAL_ATOMIC_IMP)) \
|| defined(_LIBCPP_HAS_NO_THREADS)
# define _LIBCPP_HAS_NO_ATOMIC_HEADER
#else
# ifndef _LIBCPP_ATOMIC_FLAG_TYPE
# define _LIBCPP_ATOMIC_FLAG_TYPE bool
# endif
# ifdef _LIBCPP_FREESTANDING
# define _LIBCPP_ATOMIC_ONLY_USE_BUILTINS
# endif
#endif
#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
#endif
#if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS)
# if defined(__clang__) && __has_attribute(acquire_capability)
// Work around the attribute handling in clang. When both __declspec and
// __attribute__ are present, the processing goes awry preventing the definition
// of the types.
# if !defined(_LIBCPP_OBJECT_FORMAT_COFF)
# define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS
# endif
# endif
#endif
#if __has_attribute(require_constant_initialization)
# define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__))
#else
# define _LIBCPP_SAFE_STATIC
#endif
#if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700
#define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF
#endif
#if !__has_builtin(__builtin_is_constant_evaluated) && _GNUC_VER < 900
#define _LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED
#endif
#if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS)
# if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION)
# define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS
# endif
#endif
#if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS)
# define _LIBCPP_DIAGNOSE_WARNING(...) \
__attribute__((diagnose_if(__VA_ARGS__, "warning")))
# define _LIBCPP_DIAGNOSE_ERROR(...) \
__attribute__((diagnose_if(__VA_ARGS__, "error")))
#else
# define _LIBCPP_DIAGNOSE_WARNING(...)
# define _LIBCPP_DIAGNOSE_ERROR(...)
#endif
// Use a function like macro to imply that it must be followed by a semicolon
#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough)
# define _LIBCPP_FALLTHROUGH() [[fallthrough]]
#elif __has_cpp_attribute(clang::fallthrough)
# define _LIBCPP_FALLTHROUGH() [[clang::fallthrough]]
#elif __has_attribute(fallthough) || _GNUC_VER >= 700
# define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__))
#else
# define _LIBCPP_FALLTHROUGH() ((void)0)
#endif
#if __has_attribute(__nodebug__)
#define _LIBCPP_NODEBUG __attribute__((__nodebug__))
#else
#define _LIBCPP_NODEBUG
#endif
#ifndef _LIBCPP_NODEBUG_TYPE
#if __has_attribute(__nodebug__) && \
(defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 900)
#define _LIBCPP_NODEBUG_TYPE __attribute__((nodebug))
#else
#define _LIBCPP_NODEBUG_TYPE
#endif
#endif // !defined(_LIBCPP_NODEBUG_TYPE)
#if defined(_LIBCPP_ABI_MICROSOFT) && \
(defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases))
# define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases)
#else
# define _LIBCPP_DECLSPEC_EMPTY_BASES
#endif
#if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES)
#define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR
#define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS
#define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE
#define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS
#endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES
#if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611
#define _LIBCPP_HAS_NO_DEDUCTION_GUIDES
#endif
#if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001)
#define _LIBCPP_HAS_NO_IS_AGGREGATE
#endif
#if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L
#define _LIBCPP_HAS_NO_COROUTINES
#endif
// FIXME: Correct this macro when either (A) a feature test macro for the
// spaceship operator is provided, or (B) a compiler provides a complete
// implementation.
#define _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
// Decide whether to use availability macros.
#if !defined(_LIBCPP_BUILDING_LIBRARY) && \
!defined(_LIBCPP_DISABLE_AVAILABILITY) && \
__has_feature(attribute_availability_with_strict) && \
__has_feature(attribute_availability_in_templates) && \
__has_extension(pragma_clang_attribute_external_declaration)
# ifdef __APPLE__
# define _LIBCPP_USE_AVAILABILITY_APPLE
# endif
#endif
// Define availability macros.
#if defined(_LIBCPP_USE_AVAILABILITY_APPLE)
# define _LIBCPP_AVAILABILITY_SHARED_MUTEX \
__attribute__((availability(macosx,strict,introduced=10.12))) \
__attribute__((availability(ios,strict,introduced=10.0))) \
__attribute__((availability(tvos,strict,introduced=10.0))) \
__attribute__((availability(watchos,strict,introduced=3.0)))
# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS \
__attribute__((availability(macosx,strict,introduced=10.14))) \
__attribute__((availability(ios,strict,introduced=12.0))) \
__attribute__((availability(tvos,strict,introduced=12.0))) \
__attribute__((availability(watchos,strict,introduced=5.0)))
# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS \
_LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS
# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST \
_LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS
# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \
__attribute__((availability(macosx,strict,introduced=10.12))) \
__attribute__((availability(ios,strict,introduced=10.0))) \
__attribute__((availability(tvos,strict,introduced=10.0))) \
__attribute__((availability(watchos,strict,introduced=3.0)))
# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \
__attribute__((availability(macosx,strict,introduced=10.12))) \
__attribute__((availability(ios,strict,introduced=10.0))) \
__attribute__((availability(tvos,strict,introduced=10.0))) \
__attribute__((availability(watchos,strict,introduced=3.0)))
# define _LIBCPP_AVAILABILITY_FUTURE_ERROR \
__attribute__((availability(ios,strict,introduced=6.0)))
# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \
__attribute__((availability(macosx,strict,introduced=10.9))) \
__attribute__((availability(ios,strict,introduced=7.0)))
# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \
__attribute__((availability(macosx,strict,introduced=10.9))) \
__attribute__((availability(ios,strict,introduced=7.0)))
# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \
__attribute__((availability(macosx,strict,introduced=10.9))) \
__attribute__((availability(ios,strict,introduced=7.0)))
# define _LIBCPP_AVAILABILITY_FILESYSTEM \
__attribute__((availability(macosx,strict,introduced=10.15))) \
__attribute__((availability(ios,strict,introduced=13.0))) \
__attribute__((availability(tvos,strict,introduced=13.0))) \
__attribute__((availability(watchos,strict,introduced=6.0)))
# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH \
_Pragma("clang attribute push(__attribute__((availability(macosx,strict,introduced=10.15))), apply_to=any(function,record))") \
_Pragma("clang attribute push(__attribute__((availability(ios,strict,introduced=13.0))), apply_to=any(function,record))") \
_Pragma("clang attribute push(__attribute__((availability(tvos,strict,introduced=13.0))), apply_to=any(function,record))") \
_Pragma("clang attribute push(__attribute__((availability(watchos,strict,introduced=6.0))), apply_to=any(function,record))")
# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP \
_Pragma("clang attribute pop") \
_Pragma("clang attribute pop") \
_Pragma("clang attribute pop") \
_Pragma("clang attribute pop")
#else
# define _LIBCPP_AVAILABILITY_SHARED_MUTEX
# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS
# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS
# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST
# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS
# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE
# define _LIBCPP_AVAILABILITY_FUTURE_ERROR
# define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE
# define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY
# define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
# define _LIBCPP_AVAILABILITY_FILESYSTEM
# define _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH
# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP
#endif
// Define availability that depends on _LIBCPP_NO_EXCEPTIONS.
#ifdef _LIBCPP_NO_EXCEPTIONS
# define _LIBCPP_AVAILABILITY_FUTURE
# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST
# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS
# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS
#else
# define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR
# define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST _LIBCPP_AVAILABILITY_BAD_ANY_CAST
# define _LIBCPP_AVAILABILITY_THROW_BAD_OPTIONAL_ACCESS _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS
# define _LIBCPP_AVAILABILITY_THROW_BAD_VARIANT_ACCESS _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS
#endif
// The stream API was dropped and re-added in the dylib shipped on macOS
// and iOS. We can only assume the dylib to provide these definitions for
// macosx >= 10.9 and ios >= 7.0. Otherwise, the definitions are available
// from the headers, but not from the dylib. Explicit instantiation
// declarations for streams exist conditionally to this; if we provide
// an explicit instantiation declaration and we try to deploy to a dylib
// that does not provide those symbols, we'll get a load-time error.
#if !defined(_LIBCPP_BUILDING_LIBRARY) && \
((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \
__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \
(defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \
__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000))
# define _LIBCPP_DO_NOT_ASSUME_STREAMS_EXPLICIT_INSTANTIATION_IN_DYLIB
#endif
#if defined(_LIBCPP_COMPILER_IBM)
#define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO
#endif
#if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO)
# define _LIBCPP_PUSH_MACROS
# define _LIBCPP_POP_MACROS
#else
// Don't warn about macro conflicts when we can restore them at the
// end of the header.
# ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS
# define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS
# endif
# if defined(_LIBCPP_COMPILER_MSVC)
# define _LIBCPP_PUSH_MACROS \
__pragma(push_macro("min")) \
__pragma(push_macro("max"))
# define _LIBCPP_POP_MACROS \
__pragma(pop_macro("min")) \
__pragma(pop_macro("max"))
# else
# define _LIBCPP_PUSH_MACROS \
_Pragma("push_macro(\"min\")") \
_Pragma("push_macro(\"max\")")
# define _LIBCPP_POP_MACROS \
_Pragma("pop_macro(\"min\")") \
_Pragma("pop_macro(\"max\")")
# endif
#endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO)
#ifndef _LIBCPP_NO_AUTO_LINK
# if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY)
# if defined(_DLL)
# pragma comment(lib, "c++.lib")
# else
# pragma comment(lib, "libc++.lib")
# endif
# endif // defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_BUILDING_LIBRARY)
#endif // _LIBCPP_NO_AUTO_LINK
#define _LIBCPP_UNUSED_VAR(x) ((void)(x))
// Configures the fopen close-on-exec mode character, if any. This string will
// be appended to any mode string used by fstream for fopen/fdopen.
//
// Not all platforms support this, but it helps avoid fd-leaks on platforms that
// do.
#if defined(__BIONIC__)
# define _LIBCPP_FOPEN_CLOEXEC_MODE "e"
#else
# define _LIBCPP_FOPEN_CLOEXEC_MODE
#endif
#endif // __cplusplus
#endif // _LIBCPP_CONFIG
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