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 // size_type size() const; // constexpr since C++20
12
13 #include <string>
14 #include <cassert>
15
16 #include "test_macros.h"
17 #include "min_allocator.h"
18
19 template <class S>
20 TEST_CONSTEXPR_CXX20 void
test(const S & s,typename S::size_type c)21 test(const S& s, typename S::size_type c)
22 {
23 assert(s.size() == c);
24 }
25
test()26 TEST_CONSTEXPR_CXX20 bool test() {
27 {
28 typedef std::string S;
29 test(S(), 0);
30 test(S("123"), 3);
31 test(S("12345678901234567890123456789012345678901234567890"), 50);
32 }
33 #if TEST_STD_VER >= 11
34 {
35 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
36 test(S(), 0);
37 test(S("123"), 3);
38 test(S("12345678901234567890123456789012345678901234567890"), 50);
39 }
40 #endif
41
42 return true;
43 }
44
main(int,char **)45 int main(int, char**)
46 {
47 test();
48 #if TEST_STD_VER > 17
49 static_assert(test());
50 #endif
51
52 return 0;
53 }
54