1 // Copyright (C) 2015-2021 Free Software Foundation, Inc. 2 // 3 // This file is part of the GNU ISO C++ Library. This library is free 4 // software; you can redistribute it and/or modify it under the 5 // terms of the GNU General Public License as published by the 6 // Free Software Foundation; either version 3, or (at your option) 7 // any later version. 8 9 // This library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 14 // You should have received a copy of the GNU General Public License along 15 // with this library; see the file COPYING3. If not see 16 // <http://www.gnu.org/licenses/>. 17 18 // { dg-do compile { target c++11 } } 19 20 #include <tuple> 21 22 class Empty { }; 23 24 using std::tuple; 25 using char_pair = tuple<char, char>; 26 27 static_assert( sizeof(tuple<Empty, char_pair>) == sizeof(char_pair), 28 "Nested tuple tuple<Empty, tuple<T,T>> is too big"); 29 30 static_assert( sizeof(tuple<char_pair, char_pair>) == (2 * sizeof(char_pair)), 31 "Nested tuple<tuple<T,T, tuple<T,T>> is too big" ); 32