Implement LWG issue 2219 - support reference_wrapper in INVOKE
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@266590 91177308-0d34-0410-b5e6-96231b3b80d8
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@@ -322,6 +322,17 @@ __invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args)
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return (_VSTD::forward<_A0>(__a0).*__f)(_VSTD::forward<_Args>(__args)...);
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}
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template <class _Fp, class _A0, class ..._Args,
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class>
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inline _LIBCPP_INLINE_VISIBILITY
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auto
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__invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args)
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-> decltype((__a0.get().*__f)(_VSTD::forward<_Args>(__args)...))
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{
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return (__a0.get().*__f)(_VSTD::forward<_Args>(__args)...);
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}
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template <class _Fp, class _A0, class ..._Args,
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class>
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inline _LIBCPP_INLINE_VISIBILITY
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@@ -344,6 +355,17 @@ __invoke(_Fp&& __f, _A0&& __a0)
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return _VSTD::forward<_A0>(__a0).*__f;
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}
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template <class _Fp, class _A0,
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class>
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inline _LIBCPP_INLINE_VISIBILITY
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auto
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__invoke(_Fp&& __f, _A0&& __a0)
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-> decltype(__a0.get().*__f)
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{
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return __a0.get().*__f;
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}
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template <class _Fp, class _A0,
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class>
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inline _LIBCPP_INLINE_VISIBILITY
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@@ -577,10 +599,6 @@ public:
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#endif // _LIBCPP_HAS_NO_VARIADICS
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};
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template <class _Tp> struct __is_reference_wrapper_impl : public false_type {};
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template <class _Tp> struct __is_reference_wrapper_impl<reference_wrapper<_Tp> > : public true_type {};
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template <class _Tp> struct __is_reference_wrapper
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: public __is_reference_wrapper_impl<typename remove_cv<_Tp>::type> {};
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template <class _Tp>
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inline _LIBCPP_INLINE_VISIBILITY
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