[libc++] Declare std::tuple_element as struct instead of class
Similarly to https://reviews.llvm.org/rL350972, this revision changes
std::tuple_element from class to struct.
Fixes PR41331.
Thanks to Jan Wilken Dörrie for the patch.
Differential Revision: https://reviews.llvm.org/D60069
llvm-svn: 357411
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 2b0c7abba35ac2dc8e00c121b93476ff879bfd86
diff --git a/include/array b/include/array
index 418a2a9..88e9d57 100644
--- a/include/array
+++ b/include/array
@@ -91,7 +91,7 @@
void swap(array<T,N>& x, array<T,N>& y) noexcept(noexcept(x.swap(y))); // C++17
template <class T> struct tuple_size;
-template <size_t I, class T> class tuple_element;
+template <size_t I, class T> struct tuple_element;
template <class T, size_t N> struct tuple_size<array<T, N>>;
template <size_t I, class T, size_t N> struct tuple_element<I, array<T, N>>;
template <size_t I, class T, size_t N> T& get(array<T, N>&) noexcept; // constexpr in C++14
@@ -433,10 +433,9 @@
: public integral_constant<size_t, _Size> {};
template <size_t _Ip, class _Tp, size_t _Size>
-class _LIBCPP_TEMPLATE_VIS tuple_element<_Ip, array<_Tp, _Size> >
+struct _LIBCPP_TEMPLATE_VIS tuple_element<_Ip, array<_Tp, _Size> >
{
static_assert(_Ip < _Size, "Index out of bounds in std::tuple_element<> (std::array)");
-public:
typedef _Tp type;
};