1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
10
11// <string_view>
12
13// constexpr const _CharT* data() const noexcept;
14
15#include <string_view>
16#include <cassert>
17#include <iterator>
18
19#include "test_macros.h"
20
21template <typename CharT>
22void test(const CharT* s, std::size_t len) {
23 std::basic_string_view<CharT> sv(s, len);
24 assert(sv.length() == len);
25 assert(sv.data() == s);
26#if TEST_STD_VER > 14
27 // make sure we pick up std::data, too!
28 assert(sv.data() == std::data(sv));
29#endif
30}
31
32int main(int, char**) {
33 test(s: "ABCDE", len: 5);
34 test(s: "a", len: 1);
35
36#ifndef TEST_HAS_NO_WIDE_CHARACTERS
37 test(s: L"ABCDE", len: 5);
38 test(s: L"a", len: 1);
39#endif
40
41#if TEST_STD_VER >= 11
42 test(u"ABCDE", 5);
43 test(u"a", 1);
44
45 test(U"ABCDE", 5);
46 test(U"a", 1);
47#endif
48
49#if TEST_STD_VER > 11
50 {
51 constexpr const char* s = "ABC";
52 constexpr std::basic_string_view<char> sv(s, 2);
53 static_assert(sv.length() == 2, "");
54 static_assert(sv.data() == s, "");
55 }
56#endif
57
58 return 0;
59}
60

source code of libcxx/test/std/strings/string.view/string.view.access/data.pass.cpp