mirror of
https://github.com/darlinghq/darling-libcxx.git
synced 2024-11-27 05:40:48 +00:00
7fac8f6b9f
r207606 changed the __need_foo macros to behave like they do with gcc: If they are set, _only_ the __need_foo stuff gets defined. As a consequence, cstddef no longer defined "offsetof". It looks like the __need_foo defines aren't needed anymore, so just remove them. Fixes PR19723. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@208942 91177308-0d34-0410-b5e6-96231b3b80d8
103 lines
2.5 KiB
C++
103 lines
2.5 KiB
C++
// -*- C++ -*-
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//===--------------------------- cstddef ----------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_CSTDDEF
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#define _LIBCPP_CSTDDEF
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/*
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cstddef synopsis
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Macros:
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offsetof(type,member-designator)
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NULL
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namespace std
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{
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Types:
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ptrdiff_t
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size_t
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max_align_t
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nullptr_t
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} // std
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*/
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#include <__config>
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#include <stddef.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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using ::ptrdiff_t;
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using ::size_t;
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#if defined(__CLANG_MAX_ALIGN_T_DEFINED) || defined(_GCC_MAX_ALIGN_T)
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// Re-use the compiler's <stddef.h> max_align_t where possible.
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using ::max_align_t;
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#else
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typedef long double max_align_t;
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#endif
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#ifdef _LIBCPP_HAS_NO_NULLPTR
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struct _LIBCPP_TYPE_VIS_ONLY nullptr_t
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{
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void* __lx;
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struct __nat {int __for_bool_;};
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_LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR nullptr_t() : __lx(0) {}
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_LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR nullptr_t(int __nat::*) : __lx(0) {}
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_LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR operator int __nat::*() const {return 0;}
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template <class _Tp>
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_LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR
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operator _Tp* () const {return 0;}
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template <class _Tp, class _Up>
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_LIBCPP_ALWAYS_INLINE
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operator _Tp _Up::* () const {return 0;}
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friend _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR bool operator==(nullptr_t, nullptr_t) {return true;}
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friend _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR bool operator!=(nullptr_t, nullptr_t) {return false;}
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friend _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR bool operator<(nullptr_t, nullptr_t) {return false;}
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friend _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR bool operator<=(nullptr_t, nullptr_t) {return true;}
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friend _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR bool operator>(nullptr_t, nullptr_t) {return false;}
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friend _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR bool operator>=(nullptr_t, nullptr_t) {return true;}
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};
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inline _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR nullptr_t __get_nullptr_t() {return nullptr_t(0);}
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#define nullptr _VSTD::__get_nullptr_t()
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#endif // _LIBCPP_HAS_NO_NULLPTR
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_LIBCPP_END_NAMESPACE_STD
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#ifndef _LIBCPP_HAS_NO_NULLPTR
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namespace std
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{
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typedef decltype(nullptr) nullptr_t;
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}
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#endif // _LIBCPP_HAS_NO_NULLPTR
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#endif // _LIBCPP_CSTDDEF
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