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* assign(char_type* s, size_t n, char_type a);
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 s2[3] = {0};
24     assert(std::char_traits<char32_t>::assign(s2, 3, char32_t(5)) == s2);
25     assert(s2[0] == char32_t(5));
26     assert(s2[1] == char32_t(5));
27     assert(s2[2] == char32_t(5));
28     assert(std::char_traits<char32_t>::assign(NULL, 0, char32_t(5)) == NULL);
29 #endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
30 
31   return true;
32 }
33 
main(int,char **)34 int main(int, char**)
35 {
36     test();
37 
38 #if TEST_STD_VER > 17
39     static_assert(test());
40 #endif
41 
42   return 0;
43 }
44