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 // basic_string<charT,traits,Allocator>&
12 // operator=(const charT* s); // constexpr since C++20
13
14 #include <string>
15 #include <cassert>
16
17 #include "test_macros.h"
18 #include "min_allocator.h"
19 #include "asan_testing.h"
20
21 template <class S>
test(S s1,const typename S::value_type * s2)22 TEST_CONSTEXPR_CXX20 void test(S s1, const typename S::value_type* s2) {
23 typedef typename S::traits_type T;
24 s1 = s2;
25 LIBCPP_ASSERT(s1.__invariants());
26 assert(s1.size() == T::length(s2));
27 assert(T::compare(s1.data(), s2, s1.size()) == 0);
28 assert(s1.capacity() >= s1.size());
29 LIBCPP_ASSERT(is_string_asan_correct(s1));
30 }
31
32 template <class S>
test_string()33 TEST_CONSTEXPR_CXX20 void test_string() {
34 test(S(), "");
35 test(S("1"), "");
36 test(S(), "1");
37 test(S("1"), "2");
38 test(S("1"), "2");
39
40 test(S(), "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
41 test(S("123456789"), "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
42 test(S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"), "123456789");
43 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
44 "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
45 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
46 "1234567890123456789012345678901234567890123456789012345678901234567890"),
47 "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
48 }
49
test()50 TEST_CONSTEXPR_CXX20 bool test() {
51 test_string<std::string>();
52 #if TEST_STD_VER >= 11
53 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
54 test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>();
55 #endif
56
57 return true;
58 }
59
main(int,char **)60 int main(int, char**) {
61 test();
62 #if TEST_STD_VER > 17
63 static_assert(test());
64 #endif
65
66 return 0;
67 }
68