| // { dg-options "-std=gnu++0x" } |
| |
| // Copyright (C) 2011-2014 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 <tuple> |
| #include <type_traits> |
| #include <testsuite_hooks.h> |
| |
| template<typename T> |
| typename std::decay<T>::type copy(T&& x) |
| { return std::forward<T>(x); } |
| |
| template<typename... Args1, typename... Args2> |
| void |
| check_tuple_cat(std::tuple<Args1...> t1, std::tuple<Args2...> t2) |
| { |
| bool test __attribute__((unused)) = true; |
| |
| typedef std::tuple<Args1..., Args2...> concatenated; |
| |
| auto cat1 = std::tuple_cat( t1, t2 ); |
| auto cat2 = std::tuple_cat(copy(t1), t2 ); |
| auto cat3 = std::tuple_cat( t1, copy(t2)); |
| auto cat4 = std::tuple_cat(copy(t1), copy(t2)); |
| |
| static_assert( std::is_same<decltype(cat1), concatenated>::value, "" ); |
| static_assert( std::is_same<decltype(cat2), concatenated>::value, "" ); |
| static_assert( std::is_same<decltype(cat3), concatenated>::value, "" ); |
| static_assert( std::is_same<decltype(cat4), concatenated>::value, "" ); |
| |
| VERIFY( cat1 == cat2 ); |
| VERIFY( cat1 == cat3 ); |
| VERIFY( cat1 == cat4 ); |
| } |
| |
| // libstdc++/48476 |
| void test01() |
| { |
| int i = 0; |
| std::tuple<> t0; |
| std::tuple<int&> t1(i); |
| std::tuple<int&, int> t2(i, 0); |
| std::tuple<int const&, int, double> t3(i, 0, 0); |
| |
| check_tuple_cat(t0, t0); |
| check_tuple_cat(t0, t1); |
| check_tuple_cat(t0, t2); |
| check_tuple_cat(t0, t3); |
| |
| check_tuple_cat(t1, t0); |
| check_tuple_cat(t1, t1); |
| check_tuple_cat(t1, t2); |
| check_tuple_cat(t1, t3); |
| |
| check_tuple_cat(t2, t0); |
| check_tuple_cat(t2, t1); |
| check_tuple_cat(t2, t2); |
| check_tuple_cat(t2, t3); |
| |
| check_tuple_cat(t3, t0); |
| check_tuple_cat(t3, t1); |
| check_tuple_cat(t3, t2); |
| check_tuple_cat(t3, t3); |
| } |
| |
| int main() |
| { |
| test01(); |
| return 0; |
| } |