1 // Copyright (C) 2017-2021 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++17 } }
19
20 #include <valarray>
21
22 template<typename T, typename U> struct require_same;
23 template<typename T> struct require_same<T, T> { using type = void; };
24
25 template<typename T, typename U>
26 typename require_same<T, U>::type
check_type(U &)27 check_type(U&) { }
28
29 void
test01()30 test01()
31 {
32 int arr[4] = { 1, 2, 3, 4 };
33 std::valarray v(arr, 4);
34 check_type<std::valarray<int>>(v);
35
36 std::valarray v2 = v;
37 check_type<std::valarray<int>>(v2);
38
39 std::valarray v3 = std::move(v);
40 check_type<std::valarray<int>>(v3);
41 }
42