1 // { dg-options "-std=gnu++11" }
4 // Copyright (C) 2012-2014 Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING3. If not see
19 // <http://www.gnu.org/licenses/>.
24 #include <type_traits>
30 template class std::tuple
<tuple
<>>;
31 template class std::tuple
<tuple
<tuple
<>>>;
32 template class std::tuple
<A
, tuple
<A
, tuple
<A
, tuple
<A
>>>>;
33 template class std::tuple
<tuple
<tuple
<A
, A
>, A
>, A
>;
35 // Verify the following QoI properties are preserved
37 static_assert( std::is_empty
<tuple
<>>::value
, "tuple<> is empty" );
39 static_assert( std::is_empty
<tuple
<tuple
<>>>::value
,
40 "tuple<tuple<>> is empty" );
42 static_assert( sizeof(tuple
<char, tuple
<>>) == sizeof(char),
43 "tuple<> is eligible for EBO" );