generic-library/cxx
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cxx/include/__config
Nuno Lopes 518d150040 mark operator new(std::nothrow) as noalias (aka __attribute__((malloc)) 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@159359 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28 16:47:34 +00:00

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// -*- C++ -*-
//===--------------------------- __config ---------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_CONFIG
#define _LIBCPP_CONFIG
#if !_MSC_VER // explicit macro necessary because it is only defined below in this file
#pragma GCC system_header
#endif
#define _LIBCPP_VERSION 1001
#define _LIBCPP_ABI_VERSION 1
#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y
#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y)
#define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION)
#ifdef __LITTLE_ENDIAN__
#if __LITTLE_ENDIAN__
#define _LIBCPP_LITTLE_ENDIAN 1
#define _LIBCPP_BIG_ENDIAN 0
#endif // __LITTLE_ENDIAN__
#endif // __LITTLE_ENDIAN__
#ifdef __BIG_ENDIAN__
#if __BIG_ENDIAN__
#define _LIBCPP_LITTLE_ENDIAN 0
#define _LIBCPP_BIG_ENDIAN 1
#endif // __BIG_ENDIAN__
#endif // __BIG_ENDIAN__
#ifdef __FreeBSD__
# include <sys/endian.h>
# if _BYTE_ORDER == _LITTLE_ENDIAN
# define _LIBCPP_LITTLE_ENDIAN 1
# define _LIBCPP_BIG_ENDIAN 0
# else // _BYTE_ORDER == _LITTLE_ENDIAN
# define _LIBCPP_LITTLE_ENDIAN 0
# define _LIBCPP_BIG_ENDIAN 1
# endif // _BYTE_ORDER == _LITTLE_ENDIAN
#endif // __FreeBSD__
#ifdef _WIN32
# define _LIBCPP_LITTLE_ENDIAN 1
# define _LIBCPP_BIG_ENDIAN 0
// Compiler intrinsics (GCC or MSVC)
# if (defined(_MSC_VER) && _MSC_VER >= 1400) || (__GNUC__ >= 4 && __GNUC_MINOR__ > 3)
# define _LIBCP_HAS_IS_BASE_OF
# endif
#endif // _WIN32
#ifdef __sun__
# include <sys/isa_defs.h>
# ifdef _LITTLE_ENDIAN
# define _LIBCPP_LITTLE_ENDIAN 1
# define _LIBCPP_BIG_ENDIAN 0
# else
# define _LIBCPP_LITTLE_ENDIAN 0
# define _LIBCPP_BIG_ENDIAN 1
# endif
#endif // __sun__
#if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
# include <endian.h>
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define _LIBCPP_LITTLE_ENDIAN 1
# define _LIBCPP_BIG_ENDIAN 0
# elif __BYTE_ORDER == __BIG_ENDIAN
# define _LIBCPP_LITTLE_ENDIAN 0
# define _LIBCPP_BIG_ENDIAN 1
# else // __BYTE_ORDER == __BIG_ENDIAN
# error unable to determine endian
# endif
#endif // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
#if _WIN32
// only really useful for a DLL
#ifdef _LIBCPP_DLL // this should be a compiler builtin define ideally...
# ifdef cxx_EXPORTS
# define _LIBCPP_HIDDEN
# define _LIBCPP_VISIBLE __declspec(dllexport)
# else
# define _LIBCPP_HIDDEN
# define _LIBCPP_VISIBLE __declspec(dllimport)
# endif
#else
# define _LIBCPP_HIDDEN
# define _LIBCPP_VISIBLE
#endif
#ifndef _LIBCPP_INLINE_VISIBILITY
# if _MSC_VER
# define _LIBCPP_INLINE_VISIBILITY __forceinline
# else // MinGW GCC and Clang
# define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__))
# endif
#endif
#ifndef _LIBCPP_EXCEPTION_ABI
#define _LIBCPP_EXCEPTION_ABI _LIBCPP_VISIBLE
#endif
#ifndef _LIBCPP_ALWAYS_INLINE
# if _MSC_VER
# define _LIBCPP_ALWAYS_INLINE __forceinline
# endif
#endif
#endif // _WIN32
#ifndef _LIBCPP_HIDDEN
#define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden")))
#endif
#ifndef _LIBCPP_VISIBLE
#define _LIBCPP_VISIBLE __attribute__ ((__visibility__("default")))
#endif
#ifndef _LIBCPP_INLINE_VISIBILITY
#define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__))
#endif
#ifndef _LIBCPP_EXCEPTION_ABI
#define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default")))
#endif
#ifndef _LIBCPP_CANTTHROW
#define _LIBCPP_CANTTHROW __attribute__ ((__nothrow__))
#endif
#ifndef _LIBCPP_ALWAYS_INLINE
#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__visibility__("hidden"), __always_inline__))
#endif
#if defined(__clang__)
#if __has_feature(cxx_alignas)
# define _ALIGNAS_TYPE(x) alignas(x)
# define _ALIGNAS(x) alignas(x)
#else
# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
# define _ALIGNAS(x) __attribute__((__aligned__(x)))
#endif
#if !__has_feature(cxx_alias_templates)
#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
#endif
#ifndef __GXX_EXPERIMENTAL_CXX0X__
#ifdef __linux__
#define _LIBCPP_HAS_NO_UNICODE_CHARS
#else
typedef __char16_t char16_t;
typedef __char32_t char32_t;
#endif
#endif
#if !(__has_feature(cxx_exceptions))
#define _LIBCPP_NO_EXCEPTIONS
#endif
#if !(__has_feature(cxx_rtti))
#define _LIBCPP_NO_RTTI
#endif
#if !(__has_feature(cxx_strong_enums))
#define _LIBCPP_HAS_NO_STRONG_ENUMS
#endif
#if !(__has_feature(cxx_decltype))
#define _LIBCPP_HAS_NO_DECLTYPE
#endif
#if __has_feature(cxx_attributes)
# define _ATTRIBUTE(x) [[x]]
#else
# define _ATTRIBUTE(x) __attribute__ ((x))
#endif
#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
#if !(__has_feature(cxx_deleted_functions))
#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
#endif // !(__has_feature(cxx_deleted_functions))
#if !(__has_feature(cxx_lambdas))
#define _LIBCPP_HAS_NO_LAMBDAS
#endif
#if !(__has_feature(cxx_nullptr))
#define _LIBCPP_HAS_NO_NULLPTR
#endif
#if !(__has_feature(cxx_rvalue_references))
#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
#endif
#if !(__has_feature(cxx_static_assert))
#define _LIBCPP_HAS_NO_STATIC_ASSERT
#endif
#if !(__has_feature(cxx_auto_type))
#define _LIBCPP_HAS_NO_AUTO_TYPE
#endif
#if !(__has_feature(cxx_access_control_sfinae)) || !__has_feature(cxx_trailing_return)
#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
#endif
#if !(__has_feature(cxx_variadic_templates))
#define _LIBCPP_HAS_NO_VARIADICS
#endif
#if !(__has_feature(cxx_trailing_return))
#define _LIBCPP_HAS_NO_TRAILING_RETURN
#endif
#if !(__has_feature(cxx_generalized_initializers))
#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
#endif
#if __has_feature(is_base_of)
# define _LIBCP_HAS_IS_BASE_OF
#endif
// Objective-C++ features (opt-in)
#if __has_feature(objc_arc)
#define _LIBCPP_HAS_OBJC_ARC
#endif
#if __has_feature(objc_arc_weak)
#define _LIBCPP_HAS_OBJC_ARC_WEAK
#define _LIBCPP_HAS_NO_STRONG_ENUMS
#endif
#if !(__has_feature(cxx_constexpr))
#define _LIBCPP_HAS_NO_CONSTEXPR
#endif
#if __FreeBSD__
#define _LIBCPP_HAS_QUICK_EXIT
#endif
#if (__has_feature(cxx_noexcept))
# define _NOEXCEPT noexcept
# define _NOEXCEPT_(x) noexcept(x)
#else
# define _NOEXCEPT throw()
# define _NOEXCEPT_(x)
#endif
#if __has_feature(underlying_type)
# define _LIBCXX_UNDERLYING_TYPE(T) __underlying_type(T)
#endif
// Inline namespaces are available in Clang regardless of C++ dialect.
#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
#define _LIBCPP_END_NAMESPACE_STD } }
#define _VSTD std::_LIBCPP_NAMESPACE
namespace std {
inline namespace _LIBCPP_NAMESPACE {
}
}
#elif defined(__GNUC__)
#define _ALIGNAS(x) __attribute__((__aligned__(x)))
#define _ATTRIBUTE(x) __attribute__((x))
#if !__EXCEPTIONS
#define _LIBCPP_NO_EXCEPTIONS
#endif
#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
#define _LIBCPP_HAS_NO_CONSTEXPR
#define _NOEXCEPT throw()
#define _NOEXCEPT_(x)
#ifndef __GXX_EXPERIMENTAL_CXX0X__
#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
#define _LIBCPP_HAS_NO_DECLTYPE
#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
#define _LIBCPP_HAS_NO_NULLPTR
#define _LIBCPP_HAS_NO_STATIC_ASSERT
#define _LIBCPP_HAS_NO_UNICODE_CHARS
#define _LIBCPP_HAS_NO_VARIADICS
#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
#else // __GXX_EXPERIMENTAL_CXX0X__
#define _LIBCPP_HAS_NO_TRAILING_RETURN
#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 3)
#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
#endif
#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 3)
#define _LIBCPP_HAS_NO_STATIC_ASSERT
#endif
#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
#define _LIBCPP_HAS_NO_DECLTYPE
#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
#define _LIBCPP_HAS_NO_UNICODE_CHARS
#define _LIBCPP_HAS_NO_VARIADICS
#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
#endif // !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 6)
#define _LIBCPP_HAS_NO_NULLPTR
#endif
#endif // __GXX_EXPERIMENTAL_CXX0X__
#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { namespace _LIBCPP_NAMESPACE {
#define _LIBCPP_END_NAMESPACE_STD } }
#define _VSTD std::_LIBCPP_NAMESPACE
namespace std {
namespace _LIBCPP_NAMESPACE {
}
using namespace _LIBCPP_NAMESPACE __attribute__((__strong__));
}
#elif defined(_MSC_VER)
#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
#define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
#define _LIBCPP_HAS_NO_CONSTEXPR
#define _LIBCPP_HAS_NO_UNICODE_CHARS
#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
#define __alignof__ __alignof
#define _ATTRIBUTE __declspec
#define _ALIGNAS(x) __declspec(align(x))
#define _LIBCPP_HAS_NO_VARIADICS
#define _NOEXCEPT throw()
#define _NOEXCEPT_(x)
#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {
#define _LIBCPP_END_NAMESPACE_STD }
#define _VSTD std
namespace std {
}
#endif // __clang__ || __GNUC___ || _MSC_VER
#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS
typedef unsigned short char16_t;
typedef unsigned int char32_t;
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
#ifdef _LIBCPP_HAS_NO_STATIC_ASSERT
template <bool> struct __static_assert_test;
template <> struct __static_assert_test<true> {};
template <unsigned> struct __static_assert_check {};
#define static_assert(__b, __m) \
typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \
_LIBCPP_CONCAT(__t, __LINE__)
#endif // _LIBCPP_HAS_NO_STATIC_ASSERT
#ifdef _LIBCPP_HAS_NO_DECLTYPE
#define decltype(x) __typeof__(x)
#endif
#ifdef _LIBCPP_HAS_NO_CONSTEXPR
#define _LIBCPP_CONSTEXPR
#else
#define _LIBCPP_CONSTEXPR constexpr
#endif
#ifdef __GNUC__
#define _NOALIAS __attribute__((malloc))
#else
#define _NOALIAS
#endif
#ifndef __has_feature
#define __has_feature(__x) 0
#endif
#if __has_feature(cxx_explicit_conversions)
# define _LIBCPP_EXPLICIT explicit
#else
# define _LIBCPP_EXPLICIT
#endif
#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
#define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_VISIBLE x { enum _
#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \
_ __v_; \
_LIBCPP_ALWAYS_INLINE x(_ __v) : __v_(__v) {} \
_LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \
};
#else // _LIBCPP_HAS_NO_STRONG_ENUMS
#define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_VISIBLE x
#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x)
#endif // _LIBCPP_HAS_NO_STRONG_ENUMS
#if __APPLE__ || __FreeBSD__ || _WIN32 || __sun__
#define _LIBCPP_LOCALE__L_EXTENSIONS 1
#endif
#if __FreeBSD__
#define _DECLARE_C99_LDBL_MATH 1
#endif
#if __APPLE__ || __FreeBSD__
#define _LIBCPP_HAS_DEFAULTRUNELOCALE
#endif
#if __APPLE__ || __FreeBSD__ || __sun__
#define _LIBCPP_WCTYPE_IS_MASK
#endif
#ifdef _LIBCPP_DEBUG2
# if _LIBCPP_DEBUG2 == 0
# define _LIBCPP_DEBUG_LEVEL 1
# elif _LIBCPP_DEBUG2 == 1
# define _LIBCPP_DEBUG_LEVEL 2
# else
# error Supported values for _LIBCPP_DEBUG2 are 0 and 1
# endif
#endif
#ifdef _LIBCPP_DEBUG2
# include <__debug>
#else
# define _LIBCPP_ASSERT(x, m) ((void)0)
#endif
#endif // _LIBCPP_CONFIG
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