comparison libstdc++-v3/testsuite/23_containers/span/explicit.cc @ 19:2b5abeee2509 default tip

update gcc11
author anatofuz
date Mon, 25 May 2020 07:50:57 +0900
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18:1830386684a0 19:2b5abeee2509
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 <span>
22
23 struct Range
24 {
25 int* begin();
26 int* end();
27 unsigned size() const;
28 } r;
29
30 auto first = std::begin(r), last = std::end(r);
31
32 // span(It, size_type)
33 std::span<int> s1 = {first, 2};
34 std::span<int, 2> s2 = {first, 2}; // { dg-error "could not convert" }
35
36 // span(It, End)
37 std::span<int> s3 = {first, last};
38 std::span<int, 2> s4 = {first, last}; // { dg-error "could not convert" }
39
40 // span(R&&)
41 std::span<int> s5 = r;
42 std::span<int, 2> s6 = r; // { dg-error "conversion from" }
43
44 // span(const span<OtherElement, OtherExtent>&)
45 std::span<const int> s7 = s5;
46 std::span<const int> s8 = s6;
47 std::span<const int, 1> s9 = s5.first(1); // { dg-error "conversion from" }
48 std::span<const int, 1> s10 = s7.first(1); // { dg-error "conversion from" }