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1 | // { dg-options "-std=gnu++0x" } | |
2 | ||
3 | // Copyright (C) 2011-2014 Free Software Foundation, Inc. | |
4 | // | |
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) | |
9 | // any later version. | |
10 | ||
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. | |
15 | ||
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/>. | |
19 | ||
20 | #include <tuple> | |
21 | #include <type_traits> | |
22 | #include <memory> | |
23 | #include <testsuite_hooks.h> | |
24 | ||
25 | template<typename T> | |
26 | typename std::decay<T>::type copy(T&& x) | |
27 | { return std::forward<T>(x); } | |
28 | ||
29 | // libstdc++/48476 | |
30 | void test01() | |
31 | { | |
32 | bool test __attribute__((unused)) = true; | |
33 | ||
34 | std::shared_ptr<int> p(new int()), q, r; | |
35 | ||
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); | |
39 | VERIFY( q == p ); | |
40 | ||
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); | |
44 | VERIFY( r == q ); | |
45 | } | |
46 | ||
47 | int main() | |
48 | { | |
49 | test01(); | |
50 | return 0; | |
51 | } |