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: c++03, c++11, c++14, c++17
10
11// <string>
12
13// template<> struct char_traits<char8_t>
14
15// static char_type* assign(char_type* s, size_t n, char_type a);
16
17#include <string>
18#include <cassert>
19
20#include "test_macros.h"
21
22TEST_CONSTEXPR_CXX20 bool test() {
23#ifndef TEST_HAS_NO_CHAR8_T
24 char8_t s2[3] = {0};
25 assert(std::char_traits<char8_t>::assign(s2, 3, char8_t(5)) == s2);
26 assert(s2[0] == char8_t(5));
27 assert(s2[1] == char8_t(5));
28 assert(s2[2] == char8_t(5));
29 assert(std::char_traits<char8_t>::assign(NULL, 0, char8_t(5)) == NULL);
30#endif
31
32 return true;
33}
34
35int main(int, char**) {
36 test();
37
38#if TEST_STD_VER > 17
39 static_assert(test());
40#endif
41
42 return 0;
43}
44

source code of libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/assign3.pass.cpp