| // { dg-options "-std=gnu++0x" } |
| // { dg-do compile } |
| |
| // Copyright (C) 2012-2014 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/>. |
| |
| // libstdc++/53648 |
| |
| #include <tuple> |
| #include <type_traits> |
| |
| using std::tuple; |
| |
| struct A { }; |
| |
| template class tuple<tuple<>>; |
| template class tuple<tuple<tuple<>>>; |
| template class tuple<A, tuple<A, tuple<A, tuple<A>>>>; |
| template class tuple<tuple<tuple<A, A>, A>, A>; |
| |
| // Verify the following QoI properties are preserved |
| |
| static_assert( std::is_empty<tuple<>>::value, "tuple<> is empty" ); |
| |
| static_assert( std::is_empty<tuple<tuple<>>>::value, |
| "tuple<tuple<>> is empty" ); |
| |
| static_assert( sizeof(tuple<char, tuple<>>) == sizeof(char), |
| "tuple<> is eligible for EBO" ); |
| |
