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
10
11// <string>
12
13// basic_string& operator=(initializer_list<charT> il); // constexpr since C++20
14
15#include <string>
16#include <cassert>
17
18#include "test_macros.h"
19#include "min_allocator.h"
20#include "asan_testing.h"
21
22// clang-format off
23template <template <class> class Alloc>
24TEST_CONSTEXPR_CXX20 void test_string() {
25 {
26 typedef std::basic_string<char, std::char_traits<char>, Alloc<char>> S;
27 S s;
28 S& result = (s = {'a', 'b', 'c'});
29 assert(s == "abc");
30 assert(&result == &s);
31 LIBCPP_ASSERT(is_string_asan_correct(s));
32 LIBCPP_ASSERT(is_string_asan_correct(result));
33 }
34 {
35 typedef std::basic_string<char, std::char_traits<char>, Alloc<char>> S;
36 S s;
37 s = {'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a',
38 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a'};
39 assert(s == "aaaaaaaaaaaaaaaaaaaaaaaa");
40 LIBCPP_ASSERT(is_string_asan_correct(s));
41 }
42#ifndef TEST_HAS_NO_WIDE_CHARACTERS
43 {
44 typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, Alloc<wchar_t>> S;
45 S s;
46 S& result = (s = {L'a', L'b', L'c'});
47 assert(s == L"abc");
48 assert(&result == &s);
49 LIBCPP_ASSERT(is_string_asan_correct(s));
50 LIBCPP_ASSERT(is_string_asan_correct(result));
51 }
52 {
53 typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, Alloc<wchar_t>> S;
54 S s;
55 S& result = (s = {L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a', L'a'});
56 assert(s == L"aaaaaaaaaaaaaaaaaaaaaaaaa");
57 assert(&result == &s);
58 LIBCPP_ASSERT(is_string_asan_correct(s));
59 LIBCPP_ASSERT(is_string_asan_correct(result));
60 }
61#endif
62}
63// clang-format on
64
65TEST_CONSTEXPR_CXX20 bool test() {
66 test_string<std::allocator>();
67 test_string<min_allocator>();
68 test_string<safe_allocator>();
69
70 return true;
71}
72
73int main(int, char**) {
74 test();
75#if TEST_STD_VER > 17
76 static_assert(test());
77#endif
78
79 return 0;
80}
81

source code of libcxx/test/std/strings/basic.string/string.cons/initializer_list_assignment.pass.cpp