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Implement LWG #2212: std::is_final. This requires compiler support, which modern versions of clang provide. Also mark LWG #2230 as complete - no code changes needed.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@202934 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2014-03-05 03:39:25 +00:00
parent 23ef151614
commit ebd6c2b81d
3 changed files with 63 additions and 2 deletions
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8
include/type_traits
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@@ -91,6 +91,7 @@ namespace std
template <class T> struct is_empty;
template <class T> struct is_polymorphic;
template <class T> struct is_abstract;
template <class T> struct is_final; // C++14
template <class T, class... Args> struct is_constructible;
template <class T> struct is_default_constructible;
@@ -759,6 +760,13 @@ template <class _Tp> struct __libcpp_abstract<_Tp, false> : public false_type {}
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_abstract : public __libcpp_abstract<_Tp> {};
// is_final
#if __has_feature(is_final)
template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY
is_final : public integral_constant<bool, __is_final(_Tp)> {};
#endif
// is_base_of
#ifdef _LIBCPP_HAS_IS_BASE_OF