1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
10
11 // <string>
12
13 // template<> struct char_traits<char8_t>
14
15 // static char_type* assign(char_type* s, size_t n, char_type a);
16
17 #include <string>
18 #include <cassert>
19
main()20 int main()
21 {
22 #if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
23 char8_t s2[3] = {0};
24 assert(std::char_traits<char8_t>::assign(s2, 3, char8_t(5)) == s2);
25 assert(s2[0] == char8_t(5));
26 assert(s2[1] == char8_t(5));
27 assert(s2[2] == char8_t(5));
28 assert(std::char_traits<char8_t>::assign(NULL, 0, char8_t(5)) == NULL);
29 #endif
30 }
31