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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/20_util/tuple/48476.cc
1 // { dg-options "-std=gnu++0x" }
3 // Copyright (C) 2011-2013 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
21 #include <type_traits>
23 #include <testsuite_hooks.h>
26 typename
std::decay
<T
>::type
copy(T
&& x
)
27 { return std::forward
<T
>(x
); }
32 bool test
__attribute__((unused
)) = true;
34 std::shared_ptr
<int> p(new int()), q
, r
;
36 std::tuple
<std::shared_ptr
<int>&, int> t0(p
, 23), t1(q
, 0);
37 t1
= copy(t0
); // shall be equivalent to
38 // q = p; std::get<1>(t1) = std::get<1>(t0);
41 std::tuple
<std::shared_ptr
<int>&, char> t2(r
, 0);
42 t2
= copy(t1
); // shall be equivalent to
43 // r = q; std::get<1>(t2) = std::get<1>(t1);