[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/utility b/include/utility
index 770d160..3eea6f3 100644
--- a/include/utility
+++ b/include/utility
@@ -103,7 +103,7 @@
inline constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t();
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 T1, class T2> struct tuple_size<pair<T1, T2> >;
template <class T1, class T2> struct tuple_element<0, pair<T1, T2> >;
@@ -687,22 +687,20 @@
: public integral_constant<size_t, 2> {};
template <size_t _Ip, class _T1, class _T2>
-class _LIBCPP_TEMPLATE_VIS tuple_element<_Ip, pair<_T1, _T2> >
+struct _LIBCPP_TEMPLATE_VIS tuple_element<_Ip, pair<_T1, _T2> >
{
static_assert(_Ip < 2, "Index out of bounds in std::tuple_element<std::pair<T1, T2>>");
};
template <class _T1, class _T2>
-class _LIBCPP_TEMPLATE_VIS tuple_element<0, pair<_T1, _T2> >
+struct _LIBCPP_TEMPLATE_VIS tuple_element<0, pair<_T1, _T2> >
{
-public:
typedef _T1 type;
};
template <class _T1, class _T2>
-class _LIBCPP_TEMPLATE_VIS tuple_element<1, pair<_T1, _T2> >
+struct _LIBCPP_TEMPLATE_VIS tuple_element<1, pair<_T1, _T2> >
{
-public:
typedef _T2 type;
};