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// <string>
10
11// const_iterator cend() const; // constexpr since C++20
12
13#include <string>
14#include <cassert>
15
16#include "test_macros.h"
17#include "min_allocator.h"
18
19template <class S>
20TEST_CONSTEXPR_CXX20 void test(const S& s) {
21 typename S::const_iterator ce = s.cend();
22 assert(ce == s.end());
23}
24
25template <class S>
26TEST_CONSTEXPR_CXX20 void test_string() {
27 test(S());
28 test(S("123"));
29}
30
31TEST_CONSTEXPR_CXX20 bool test() {
32 test_string<std::string>();
33#if TEST_STD_VER >= 11
34 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char> > >();
35#endif
36
37 return true;
38}
39
40int main(int, char**) {
41 test();
42#if TEST_STD_VER > 17
43 static_assert(test());
44#endif
45 return 0;
46}
47

source code of libcxx/test/std/strings/basic.string/string.iterators/cend.pass.cpp