blob: edae4300f9c2390ef88cf8bade4be9ca63fce501 [file] [log] [blame]
// { dg-do compile { target c++11 } }
// Copyright (C) 2012-2022 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <type_traits>
#include <array>
#include <utility>
template<typename... Args>
constexpr
std::array<typename std::common_type<Args...>::type,
sizeof...(Args)>
make_array(Args&&... args) // { dg-error "no type.*common_type<>" }
{
typedef typename std::common_type<Args...>::type CT;
return std::array<CT, sizeof...(Args)>{static_cast<CT>
(std::forward<Args>(args))...};
}
void test01()
{
constexpr auto a1 = make_array(0);
constexpr auto a2 = make_array(0, 1.2);
constexpr auto a3 = make_array(5, true, 3.1415f, 'c');
int i{};
double d{1.2};
float f{3.1415f};
auto b1 = make_array(i);
auto b2 = make_array(i, 1.2);
auto b3 = make_array(i, d);
auto b4 = make_array(0, d);
auto b5 = make_array(i, true, f, 'c');
static_assert(std::is_same<decltype(a1), const std::array<int, 1>>(), "");
static_assert(std::is_same<decltype(a2), const std::array<double, 2>>(), "");
static_assert(std::is_same<decltype(a3), const std::array<float, 4>>(), "");
static_assert(std::is_same<decltype(b1), std::array<int, 1>>(), "");
static_assert(std::is_same<decltype(b2), std::array<double, 2>>(), "");
static_assert(std::is_same<decltype(b3), std::array<double, 2>>(), "");
static_assert(std::is_same<decltype(b4), std::array<double, 2>>(), "");
static_assert(std::is_same<decltype(b5), std::array<float, 4>>(), "");
}
void test02()
{
make_array(); // { dg-error "no matching function" }
}
// { dg-prune-output "substitution" }
// { dg-prune-output "include" }