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7adcbafe | 1 | // Copyright (C) 2019-2022 Free Software Foundation, Inc. |
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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 | ||
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18 | // { dg-options "-std=gnu++20" } |
19 | // { dg-do run { target c++20 } } | |
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20 | |
21 | #include <string_view> | |
22 | #include <vector> | |
23 | #include <testsuite_hooks.h> | |
f9c2ce1d | 24 | #include <testsuite_iterators.h> |
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25 | |
26 | constexpr char str[] = "abcdefg"; | |
f9c2ce1d | 27 | constexpr std::basic_string_view<char> s(std::begin(str), std::cend(str) - 1); |
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28 | static_assert( s == str ); |
29 | static_assert( s.data() == str ); | |
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30 | constexpr std::basic_string_view ctad(std::begin(str), std::cend(str) - 1); |
31 | static_assert( ctad == s ); | |
32 | ||
33 | // The standard does not require this constructor to have a noexcept-specifier. | |
34 | static_assert( noexcept(std::basic_string_view<char>(str, str)) ); | |
35 | using I = __gnu_test::contiguous_iterator_wrapper<char>; | |
36 | static_assert( ! noexcept(std::basic_string_view<char>(I{}, I{})) ); | |
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37 | |
38 | void | |
39 | test01() | |
40 | { | |
41 | std::vector<char> v{'a', 'b', 'c'}; | |
f9c2ce1d | 42 | std::basic_string_view<char> s(v.begin(), v.end()); |
8857080c | 43 | VERIFY( s.data() == v.data() ); |
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44 | std::basic_string_view ctad(v.begin(), v.end()); |
45 | VERIFY( ctad == s ); | |
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46 | } |
47 | ||
48 | int | |
49 | main() | |
50 | { | |
51 | test01(); | |
52 | } |