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 // template<> struct char_traits<char32_t>
12
13 // static char_type* copy(char_type* s1, const char_type* s2, size_t n);
14
15 #include <string>
16 #include <cassert>
17
18 #include "test_macros.h"
19
test()20 TEST_CONSTEXPR_CXX20 bool test()
21 {
22 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
23 char32_t s1[] = {1, 2, 3};
24 char32_t s2[3] = {0};
25 assert(std::char_traits<char32_t>::copy(s2, s1, 3) == s2);
26 assert(s2[0] == char32_t(1));
27 assert(s2[1] == char32_t(2));
28 assert(s2[2] == char32_t(3));
29 assert(std::char_traits<char32_t>::copy(NULL, s1, 0) == NULL);
30 assert(std::char_traits<char32_t>::copy(s1, NULL, 0) == s1);
31 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS
32
33 return true;
34 }
35
main(int,char **)36 int main(int, char**)
37 {
38 test();
39
40 #if TEST_STD_VER > 17
41 static_assert(test());
42 #endif
43
44 return 0;
45 }
46