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comparison libstdc++-v3/testsuite/std/ranges/iota/lwg3292_neg.cc @ 152:2b5abeee2509

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update gcc11
author anatofuz
date Mon, 25 May 2020 07:50:57 +0900
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145:1830386684a0 152:2b5abeee2509
1 // Copyright (C) 2020 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-options "-std=gnu++2a" }
19 // { dg-do compile { target c++2a } }
20
21 #include <sstream>
22 #include <ranges>
23
24 namespace ranges = std::ranges;
25 namespace views = std::views;
26
27 void
28 test01()
29 {
30 std::istringstream s("1 2 3 4 5");
31 auto v = ranges::istream_view<int>(s);
32 auto i = v.begin();
33 static_assert(!std::semiregular<decltype(i)>);
34 auto o = views::iota(std::move(i));
35 static_assert(false); // { dg-error "" }
36 }
37
38 // { dg-prune-output "no match" }
39 // { dg-prune-output "deduction failed" }
40 // { dg-prune-output "constraint failure" }