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#include <cassert>
12#include <string>
13
14#include "test_macros.h"
15
16struct Incomplete;
17template <class T>
18struct Holder {
19 T t;
20};
21
22template <class T>
23struct Charlike {
24 char ch_;
25 TEST_CONSTEXPR Charlike(char ch) : ch_(ch) {}
26 TEST_CONSTEXPR operator char() const { return ch_; }
27};
28
29template <class S>
30TEST_CONSTEXPR_CXX20 void test_string() {
31 S s;
32 Charlike<Holder<Incomplete> > a[] = {'m', 'a', 'h', 'i'};
33 s.append(a, a + 4);
34 s.assign(a, a + 4);
35 s.insert(s.begin(), a, a + 4);
36 s.replace(s.begin(), s.begin() + 4, a, a + 4);
37 assert(s == "mahimahi");
38}
39
40TEST_CONSTEXPR_CXX20 bool test() {
41 test_string<std::string>();
42
43 return true;
44}
45
46int main(int, char**) {
47 test();
48#if TEST_STD_VER > 17
49 static_assert(test());
50#endif
51
52 return 0;
53}
54

source code of libcxx/test/std/strings/basic.string/string.modifiers/robust_against_adl.pass.cpp