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Workaround compilers w/o C++1z inline variables

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llvm-svn: 287255
This commit is contained in:
Eric Fiselier 2016-11-17 20:08:43 +00:00
parent d84124f043
commit ded7cf916f
2 changed files with 17 additions and 3 deletions
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5
libcxx/include/__config
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@ -796,6 +796,11 @@ template <unsigned> struct __static_assert_check {};
#define _LIBCPP_CONSTEXPR_AFTER_CXX14
#endif
// FIXME: Remove all usages of this macro once compilers catch up.
#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606L)
# define _LIBCPP_HAS_NO_INLINE_VARIABLES
#endif
#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES
# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x)
#else

15
libcxx/include/utility
View File

@ -897,21 +897,30 @@ _T1 exchange(_T1& __obj, _T2 && __new_value)
struct _LIBCPP_TYPE_VIS in_place_t {
explicit in_place_t() = default;
};
inline constexpr in_place_t in_place{};
#ifndef _LIBCPP_HAS_NO_INLINE_VARIABLES
inline
#endif
constexpr in_place_t in_place{};
template <class _Tp>
struct _LIBCPP_TYPE_VIS in_place_type_t {
explicit in_place_type_t() = default;
};
template <class _Tp>
inline constexpr in_place_type_t<_Tp> in_place_type{};
#ifndef _LIBCPP_HAS_NO_INLINE_VARIABLES
inline
#endif
constexpr in_place_type_t<_Tp> in_place_type{};
template <size_t _Idx>
struct _LIBCPP_TYPE_VIS in_place_index_t {
explicit in_place_index_t() = default;
};
template <size_t _Idx>
inline constexpr in_place_index_t<_Idx> in_place_index{};
#ifndef _LIBCPP_HAS_NO_INLINE_VARIABLES
inline
#endif
constexpr in_place_index_t<_Idx> in_place_index{};
template <class _Tp> struct __is_inplace_type_imp : false_type {};
template <class _Tp> struct __is_inplace_type_imp<in_place_type_t<_Tp>> : true_type {};