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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <utility>
// template <class T1, class T2> struct pair
// tuple_element<I, pair<T1, T2> >::type
#include <type_traits>
#include <utility>
template <class T1, class T2>
void test()
{
{
typedef T1 Exp1;
typedef T2 Exp2;
typedef std::pair<T1, T2> P;
static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
}
{
typedef T1 const Exp1;
typedef T2 const Exp2;
typedef std::pair<T1, T2> const P;
static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
}
{
typedef T1 volatile Exp1;
typedef T2 volatile Exp2;
typedef std::pair<T1, T2> volatile P;
static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
}
{
typedef T1 const volatile Exp1;
typedef T2 const volatile Exp2;
typedef std::pair<T1, T2> const volatile P;
static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
}
}
int main(int, char**)
{
test<int, short>();
test<int*, char>();
return 0;
}
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